[WIP] Mapping rework (#91)

* Move packages

* Mapping & entry refactor: first pass

* Fix deobf -> obf tree remapping

* Resolve various issues

* Give all entries the potential for parents and treat inner classes as children

* Deobf UI tree elements

* Tests pass

* Sort mapping output

* Fix delta tracking

* Index separation and first pass for #97

* Keep track of remapped jar index

* Fix child entries not being remapped

* Drop non-root entries

* Track dropped mappings

* Fix enigma mapping ordering

* EntryTreeNode interface

* Small tweaks

* Naive full index remap on rename

* Entries can resolve to more than one root entry

* Support alternative resolution strategies

* Bridge method resolution

* Tests pass

* Fix mappings being used where there are none

* Fix methods with different descriptors being considered unique. closes #89

124 files changed, 4484 insertions, 5716 deletions

diff --git a/src/main/java/cuchaz/enigma/CommandMain.java b/src/main/java/cuchaz/enigma/CommandMain.java
index 6c8caa4..a84cd5e 100644
--- a/src/main/java/cuchaz/enigma/CommandMain.java
+++ b/src/main/java/cuchaz/enigma/CommandMain.java
@@ -11,11 +11,15 @@
 
 package cuchaz.enigma;
 
-import cuchaz.enigma.Deobfuscator.ProgressListener;
-import cuchaz.enigma.mapping.Mappings;
-import cuchaz.enigma.mapping.MappingsEnigmaReader;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.serde.MappingFormat;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
 
 import java.io.File;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Locale;
 import java.util.jar.JarFile;
 
 public class CommandMain {
@@ -52,7 +56,7 @@ public class CommandMain {
         private static void decompile(String[] args) throws Exception {
                 File fileJarIn = getReadableFile(getArg(args, 1, "in jar", true));
                 File fileJarOut = getWritableFolder(getArg(args, 2, "out folder", true));
-                File fileMappings = getReadableFile(getArg(args, 3, "mappings file", false));
+                Path fileMappings = getReadablePath(getArg(args, 3, "mappings file", false));
                 Deobfuscator deobfuscator = getDeobfuscator(fileMappings, new JarFile(fileJarIn));
                 deobfuscator.writeSources(fileJarOut, new ConsoleProgressListener());
         }
@@ -60,43 +64,47 @@ public class CommandMain {
         private static void deobfuscate(String[] args) throws Exception {
                 File fileJarIn = getReadableFile(getArg(args, 1, "in jar", true));
                 File fileJarOut = getWritableFile(getArg(args, 2, "out jar", true));
-                File fileMappings = getReadableFile(getArg(args, 3, "mappings file", false));
+                Path fileMappings = getReadablePath(getArg(args, 3, "mappings file", false));
                 Deobfuscator deobfuscator = getDeobfuscator(fileMappings, new JarFile(fileJarIn));
                 deobfuscator.writeJar(fileJarOut, new ConsoleProgressListener());
         }
 
-        private static Deobfuscator getDeobfuscator(File fileMappings, JarFile jar) throws Exception {
+        private static Deobfuscator getDeobfuscator(Path fileMappings, JarFile jar) throws Exception {
                 System.out.println("Reading jar...");
                 Deobfuscator deobfuscator = new Deobfuscator(jar);
                 if (fileMappings != null) {
                         System.out.println("Reading mappings...");
-                        Mappings mappings = new MappingsEnigmaReader().read(fileMappings);
+                        EntryTree<EntryMapping> mappings = chooseEnigmaFormat(fileMappings).read(fileMappings);
                         deobfuscator.setMappings(mappings);
                 }
                 return deobfuscator;
         }
 
         private static void convertMappings(String[] args) throws Exception {
-                File fileMappings = getReadableFile(getArg(args, 1, "enigma mapping", true));
+                Path fileMappings = getReadablePath(getArg(args, 1, "enigma mapping", true));
                 File result = getWritableFile(getArg(args, 2, "enigma mapping", true));
                 String name = getArg(args, 3, "format desc", true);
-                Mappings.FormatType formatType;
+                MappingFormat saveFormat;
                 try {
-                        formatType = Mappings.FormatType.valueOf(name.toUpperCase());
+                        saveFormat = MappingFormat.valueOf(name.toUpperCase(Locale.ROOT));
                 } catch (IllegalArgumentException e) {
                         throw new IllegalArgumentException(name + "is not a valid mapping format!");
                 }
 
                 System.out.println("Reading mappings...");
-                Mappings mappings = new MappingsEnigmaReader().read(fileMappings);
+
+                MappingFormat readFormat = chooseEnigmaFormat(fileMappings);
+                EntryTree<EntryMapping> mappings = readFormat.read(fileMappings);
                 System.out.println("Saving new mappings...");
-                switch (formatType) {
-                        case SRG_FILE:
-                                mappings.saveSRGMappings(result);
-                                break;
-                        default:
-                                mappings.saveEnigmaMappings(result, Mappings.FormatType.ENIGMA_FILE != formatType);
-                                break;
+
+                saveFormat.write(mappings, result.toPath(), new ConsoleProgressListener());
+        }
+
+        private static MappingFormat chooseEnigmaFormat(Path path) {
+                if (Files.isDirectory(path)) {
+                        return MappingFormat.ENIGMA_DIRECTORY;
+                } else {
+                        return MappingFormat.ENIGMA_FILE;
                 }
         }
 
@@ -149,6 +157,17 @@ public class CommandMain {
                 return file;
         }
 
+        private static Path getReadablePath(String path) {
+                if (path == null) {
+                        return null;
+                }
+                Path file = Paths.get(path).toAbsolutePath();
+                if (!Files.exists(file)) {
+                        throw new IllegalArgumentException("Cannot find file: " + file.toString());
+                }
+                return file;
+        }
+
         public static class ConsoleProgressListener implements ProgressListener {
 
                 private static final int ReportTime = 5000; // 5s
@@ -166,7 +185,7 @@ public class CommandMain {
                 }
 
                 @Override
-                public void onProgress(int numDone, String message) {
+                public void step(int numDone, String message) {
                         long now = System.currentTimeMillis();
                         boolean isLastUpdate = numDone == this.totalWork;
                         boolean shouldReport = isLastUpdate || now - this.lastReportTime > ReportTime;
diff --git a/src/main/java/cuchaz/enigma/Deobfuscator.java b/src/main/java/cuchaz/enigma/Deobfuscator.java
index 4a945cd..076c546 100644
--- a/src/main/java/cuchaz/enigma/Deobfuscator.java
+++ b/src/main/java/cuchaz/enigma/Deobfuscator.java
@@ -13,8 +13,6 @@ package cuchaz.enigma;
 
 import com.google.common.base.Stopwatch;
 import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
-import com.google.common.collect.Sets;
 import com.strobel.assembler.metadata.ITypeLoader;
 import com.strobel.assembler.metadata.MetadataSystem;
 import com.strobel.assembler.metadata.TypeDefinition;
@@ -28,16 +26,17 @@ import com.strobel.decompiler.languages.java.ast.CompilationUnit;
 import com.strobel.decompiler.languages.java.ast.InsertParenthesesVisitor;
 import com.strobel.decompiler.languages.java.ast.transforms.IAstTransform;
 import cuchaz.enigma.analysis.*;
+import cuchaz.enigma.analysis.index.JarIndex;
 import cuchaz.enigma.api.EnigmaPlugin;
-import cuchaz.enigma.mapping.*;
-import cuchaz.enigma.mapping.entry.*;
-import cuchaz.enigma.throwables.IllegalNameException;
+import cuchaz.enigma.translation.mapping.*;
+import cuchaz.enigma.translation.mapping.tree.DeltaTrackingTree;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
+import cuchaz.enigma.translation.representation.ReferencedEntryPool;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.Entry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
 import cuchaz.enigma.utils.Utils;
-import oml.ast.transformers.InvalidIdentifierFix;
-import oml.ast.transformers.Java8Generics;
-import oml.ast.transformers.ObfuscatedEnumSwitchRewriterTransform;
-import oml.ast.transformers.RemoveObjectCasts;
-import oml.ast.transformers.VarargsFixer;
+import oml.ast.transformers.*;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.tree.ClassNode;
 
@@ -49,6 +48,7 @@ import java.util.function.Consumer;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 import java.util.jar.JarOutputStream;
+import java.util.stream.Collectors;
 
 public class Deobfuscator {
 
@@ -57,24 +57,24 @@ public class Deobfuscator {
         private final ParsedJar parsedJar;
         private final DecompilerSettings settings;
         private final JarIndex jarIndex;
-        private final MappingsRenamer renamer;
-        private final Map<TranslationDirection, Translator> translatorCache;
-        private Mappings mappings;
+        private final IndexTreeBuilder indexTreeBuilder;
+        private EntryRemapper mapper;
 
         public Deobfuscator(ParsedJar jar, Consumer<String> listener) {
                 this.parsedJar = jar;
 
                 // build the jar index
-        listener.accept("Indexing JAR...");
-                this.jarIndex = new JarIndex(entryPool);
-                this.jarIndex.indexJar(this.parsedJar, true);
+                this.jarIndex = JarIndex.empty();
+                this.jarIndex.indexJar(this.parsedJar, listener);
 
-        listener.accept("Initializing plugins...");
+                listener.accept("Initializing plugins...");
                 for (EnigmaPlugin plugin : getPlugins()) {
                         plugin.onClassesLoaded(parsedJar.getClassDataMap(), parsedJar::getClassNode);
                 }
 
-        listener.accept("Preparing...");
+                this.indexTreeBuilder = new IndexTreeBuilder(jarIndex);
+
+                listener.accept("Preparing...");
                 // config the decompiler
                 this.settings = DecompilerSettings.javaDefaults();
                 this.settings.setMergeVariables(Utils.getSystemPropertyAsBoolean("enigma.mergeVariables", true));
@@ -85,11 +85,8 @@ public class Deobfuscator {
                 this.settings.setShowDebugLineNumbers(Utils.getSystemPropertyAsBoolean("enigma.showDebugLineNumbers", false));
                 this.settings.setShowSyntheticMembers(Utils.getSystemPropertyAsBoolean("enigma.showSyntheticMembers", false));
 
-                // init defaults
-                this.translatorCache = Maps.newTreeMap();
-                this.renamer = new MappingsRenamer(this.jarIndex, null, this.entryPool);
                 // init mappings
-                setMappings(new Mappings());
+                mapper = new EntryRemapper(jarIndex);
         }
 
         public Deobfuscator(JarFile jar, Consumer<String> listener) throws IOException {
@@ -97,12 +94,14 @@ public class Deobfuscator {
         }
 
         public Deobfuscator(ParsedJar jar) throws IOException {
-            this(jar, (msg) -> {});
-    }
+                this(jar, (msg) -> {
+                });
+        }
 
-    public Deobfuscator(JarFile jar) throws IOException {
-        this(jar, (msg) -> {});
-    }
+        public Deobfuscator(JarFile jar) throws IOException {
+                this(jar, (msg) -> {
+                });
+        }
 
         public ServiceLoader<EnigmaPlugin> getPlugins() {
                 return plugins;
@@ -116,56 +115,50 @@ public class Deobfuscator {
                 return this.jarIndex;
         }
 
-        public Mappings getMappings() {
-                return this.mappings;
+        public IndexTreeBuilder getIndexTreeBuilder() {
+                return indexTreeBuilder;
         }
 
-        public void setMappings(Mappings val) {
-                setMappings(val, true);
+        public EntryRemapper getMapper() {
+                return this.mapper;
         }
 
-        public void setMappings(Mappings val, boolean warnAboutDrops) {
-                if (val == null) {
-                        val = new Mappings();
-                }
+        public void setMappings(EntryTree<EntryMapping> mappings) {
+                if (mappings != null) {
+                        Collection<Entry<?>> dropped = dropMappings(mappings);
+                        mapper = new EntryRemapper(jarIndex, mappings);
 
-                // drop mappings that don't match the jar
-                MappingsChecker checker = new MappingsChecker(this.jarIndex);
-                checker.dropBrokenMappings(val);
-                if (warnAboutDrops) {
-                        for (Map.Entry<ClassEntry, ClassMapping> mapping : checker.getDroppedClassMappings().entrySet()) {
-                                System.out.println("WARNING: Couldn't find class entry " + mapping.getKey() + " (" + mapping.getValue().getDeobfName() + ") in jar. Mapping was dropped.");
-                        }
-                        for (Map.Entry<ClassEntry, ClassMapping> mapping : checker.getDroppedInnerClassMappings().entrySet()) {
-                                System.out.println("WARNING: Couldn't find inner class entry " + mapping.getKey() + " (" + mapping.getValue().getDeobfName() + ") in jar. Mapping was dropped.");
-                        }
-                        for (Map.Entry<FieldEntry, FieldMapping> mapping : checker.getDroppedFieldMappings().entrySet()) {
-                                System.out.println("WARNING: Couldn't find field entry " + mapping.getKey() + " (" + mapping.getValue().getDeobfName() + ") in jar. Mapping was dropped.");
-                        }
-                        for (Map.Entry<MethodEntry, MethodMapping> mapping : checker.getDroppedMethodMappings().entrySet()) {
-                                System.out.println("WARNING: Couldn't find behavior entry " + mapping.getKey() + " (" + mapping.getValue().getDeobfName() + ") in jar. Mapping was dropped.");
+                        DeltaTrackingTree<EntryMapping> deobfToObf = mapper.getDeobfToObf();
+                        for (Entry<?> entry : dropped) {
+                                deobfToObf.trackDeletion(entry);
                         }
+                } else {
+                        mapper = new EntryRemapper(jarIndex);
                 }
-
-                this.mappings = val;
-                this.renamer.setMappings(mappings);
-                this.translatorCache.clear();
         }
 
-        public Translator getTranslator(TranslationDirection direction) {
-                return this.translatorCache.computeIfAbsent(direction,
-                                k -> this.mappings.getTranslator(direction, this.jarIndex.getTranslationIndex()));
+        private Collection<Entry<?>> dropMappings(EntryTree<EntryMapping> mappings) {
+                // drop mappings that don't match the jar
+                MappingsChecker checker = new MappingsChecker(jarIndex, mappings);
+                MappingsChecker.Dropped dropped = checker.dropBrokenMappings();
+
+                Map<Entry<?>, String> droppedMappings = dropped.getDroppedMappings();
+                for (Map.Entry<Entry<?>, String> mapping : droppedMappings.entrySet()) {
+                        System.out.println("WARNING: Couldn't find " + mapping.getKey() + " (" + mapping.getValue() + ") in jar. Mapping was dropped.");
+                }
+
+                return droppedMappings.keySet();
         }
 
         public void getSeparatedClasses(List<ClassEntry> obfClasses, List<ClassEntry> deobfClasses) {
-                for (ClassEntry obfClassEntry : this.jarIndex.getObfClassEntries()) {
+                for (ClassEntry obfClassEntry : this.jarIndex.getEntryIndex().getClasses()) {
                         // skip inner classes
                         if (obfClassEntry.isInnerClass()) {
                                 continue;
                         }
 
                         // separate the classes
-                        ClassEntry deobfClassEntry = deobfuscateEntry(obfClassEntry);
+                        ClassEntry deobfClassEntry = mapper.deobfuscate(obfClassEntry);
                         if (!deobfClassEntry.equals(obfClassEntry)) {
                                 // if the class has a mapping, clearly it's deobfuscated
                                 deobfClasses.add(deobfClassEntry);
@@ -184,8 +177,8 @@ public class Deobfuscator {
                                 this.parsedJar,
                                 this.jarIndex,
                                 this.entryPool,
-                                getTranslator(TranslationDirection.OBFUSCATING),
-                                getTranslator(TranslationDirection.DEOBFUSCATING)
+                                this.mapper.getObfuscator(),
+                                this.mapper.getDeobfuscator()
                 );
         }
 
@@ -203,14 +196,7 @@ public class Deobfuscator {
                 // we need to tell the decompiler the deobfuscated name so it doesn't get freaked out
                 // the decompiler only sees classes after deobfuscation, so we need to load it by the deobfuscated name if there is one
 
-                // first, assume class name is deobf
-                String deobfClassName = className;
-
-                // if it wasn't actually deobf, then we can find a mapping for it and get the deobf name
-                ClassMapping classMapping = this.mappings.getClassByObf(className);
-                if (classMapping != null && classMapping.getDeobfName() != null) {
-                        deobfClassName = classMapping.getDeobfName();
-                }
+                String deobfClassName = mapper.deobfuscate(new ClassEntry(className)).getFullName();
 
                 // set the desc loader
                 this.settings.setTypeLoader(loader);
@@ -236,43 +222,23 @@ public class Deobfuscator {
         }
 
         public SourceIndex getSourceIndex(CompilationUnit sourceTree, String source) {
-                return getSourceIndex(sourceTree, source, null);
+                return getSourceIndex(sourceTree, source, true);
         }
 
-        public SourceIndex getSourceIndex(CompilationUnit sourceTree, String source, Boolean ignoreBadTokens) {
+        public SourceIndex getSourceIndex(CompilationUnit sourceTree, String source, boolean ignoreBadTokens) {
 
                 // build the source index
-                SourceIndex index;
-                if (ignoreBadTokens != null) {
-                        index = new SourceIndex(source, ignoreBadTokens);
-                } else {
-                        index = new SourceIndex(source);
-                }
+                SourceIndex index = new SourceIndex(source, ignoreBadTokens);
                 sourceTree.acceptVisitor(new SourceIndexVisitor(entryPool), index);
 
-                // DEBUG
-                // sourceTree.acceptVisitor( new TreeDumpVisitor( new File( "tree.txt" ) ), null );
-
-                // resolve all the classes in the source references
-                for (Token token : index.referenceTokens()) {
-                        EntryReference<Entry, Entry> deobfReference = index.getDeobfReference(token);
-
-                        // get the obfuscated entry
-                        Entry obfEntry = obfuscateEntry(deobfReference.entry);
+                EntryResolver resolver = mapper.getDeobfResolver();
 
-                        // try to resolve the class
-                        ClassEntry resolvedObfClassEntry = this.jarIndex.getTranslationIndex().resolveEntryOwner(obfEntry);
-                        if (resolvedObfClassEntry != null && !resolvedObfClassEntry.equals(obfEntry.getOwnerClassEntry())) {
-                                // change the class of the entry
-                                obfEntry = obfEntry.updateOwnership(resolvedObfClassEntry);
-
-                                // save the new deobfuscated reference
-                                deobfReference.entry = deobfuscateEntry(obfEntry);
-                                index.replaceDeobfReference(token, deobfReference);
-                        }
+                Collection<Token> tokens = Lists.newArrayList(index.referenceTokens());
 
-                        // DEBUG
-                        // System.out.println( token + " -> " + reference + " -> " + index.getReferenceToken( reference ) );
+                // resolve all the classes in the source references
+                for (Token token : tokens) {
+                        EntryReference<Entry<?>, Entry<?>> deobfReference = index.getDeobfReference(token);
+                        index.replaceDeobfReference(token, resolver.resolveFirstReference(deobfReference, ResolutionStrategy.RESOLVE_CLOSEST));
                 }
 
                 return index;
@@ -288,15 +254,9 @@ public class Deobfuscator {
 
         public void writeSources(File dirOut, ProgressListener progress) {
                 // get the classes to decompile
-                Set<ClassEntry> classEntries = Sets.newHashSet();
-                for (ClassEntry obfClassEntry : this.jarIndex.getObfClassEntries()) {
-                        // skip inner classes
-                        if (obfClassEntry.isInnerClass()) {
-                                continue;
-                        }
-
-                        classEntries.add(obfClassEntry);
-                }
+                Set<ClassEntry> classEntries = jarIndex.getEntryIndex().getClasses().stream()
+                                .filter(classEntry -> !classEntry.isInnerClass())
+                                .collect(Collectors.toSet());
 
                 if (progress != null) {
                         progress.init(classEntries.size(), "Decompiling classes...");
@@ -313,9 +273,9 @@ public class Deobfuscator {
                 Stopwatch stopwatch = Stopwatch.createStarted();
                 AtomicInteger count = new AtomicInteger();
                 classEntries.parallelStream().forEach(obfClassEntry -> {
-                        ClassEntry deobfClassEntry = deobfuscateEntry(new ClassEntry(obfClassEntry));
+                        ClassEntry deobfClassEntry = mapper.deobfuscate(obfClassEntry);
                         if (progress != null) {
-                                progress.onProgress(count.getAndIncrement(), deobfClassEntry.toString());
+                                progress.step(count.getAndIncrement(), deobfClassEntry.toString());
                         }
 
                         try {
@@ -332,131 +292,17 @@ public class Deobfuscator {
                         } catch (Throwable t) {
                                 // don't crash the whole world here, just log the error and keep going
                                 // TODO: set up logback via log4j
-                                System.err.println("Unable to deobfuscate class " + deobfClassEntry + " (" + obfClassEntry + ")");
+                                System.err.println("Unable to decompile class " + deobfClassEntry + " (" + obfClassEntry + ")");
                                 t.printStackTrace(System.err);
                         }
                 });
                 stopwatch.stop();
                 System.out.println("writeSources Done in : " + stopwatch.toString());
                 if (progress != null) {
-                        progress.onProgress(count.get(), "Done:");
-                }
-        }
-
-        private void addAllPotentialAncestors(Set<ClassEntry> classEntries, ClassEntry classObfEntry) {
-                for (ClassEntry interfaceEntry : jarIndex.getTranslationIndex().getInterfaces(classObfEntry)) {
-                        if (classEntries.add(interfaceEntry)) {
-                                addAllPotentialAncestors(classEntries, interfaceEntry);
-                        }
-                }
-
-                ClassEntry superClassEntry = jarIndex.getTranslationIndex().getSuperclass(classObfEntry);
-                if (superClassEntry != null && classEntries.add(superClassEntry)) {
-                        addAllPotentialAncestors(classEntries, superClassEntry);
-                }
-        }
-
-        public boolean isMethodProvider(MethodEntry methodEntry) {
-                Set<ClassEntry> classEntries = new HashSet<>();
-                addAllPotentialAncestors(classEntries, methodEntry.getOwnerClassEntry());
-
-                for (ClassEntry parentEntry : classEntries) {
-                        MethodEntry ancestorMethodEntry = entryPool.getMethod(parentEntry, methodEntry.getName(), methodEntry.getDesc());
-                        if (jarIndex.containsObfMethod(ancestorMethodEntry)) {
-                                return false;
-                        }
-                }
-
-                return true;
-        }
-
-        @Deprecated
-        public boolean isMethodProvider(ClassEntry classObfEntry, MethodEntry methodEntry) {
-                Set<ClassEntry> classEntries = new HashSet<>();
-                addAllPotentialAncestors(classEntries, classObfEntry);
-
-                for (ClassEntry parentEntry : classEntries) {
-                        MethodEntry ancestorMethodEntry = entryPool.getMethod(parentEntry, methodEntry.getName(), methodEntry.getDesc());
-                        if (jarIndex.containsObfMethod(ancestorMethodEntry)) {
-                                return false;
-                        }
-                }
-
-                return true;
-        }
-
-        public void rebuildMethodNames(ProgressListener progress) {
-                final AtomicInteger i = new AtomicInteger();
-                Map<ClassMapping, Map<Entry, String>> renameClassMap = new ConcurrentHashMap<>();
-
-                progress.init(getMappings().classes().size() * 3, "Rebuilding method names");
-
-                Lists.newArrayList(getMappings().classes()).parallelStream().forEach(classMapping -> {
-                        progress.onProgress(i.getAndIncrement(), classMapping.getDeobfName());
-                        rebuildMethodNames(classMapping, renameClassMap);
-                });
-
-
-                renameClassMap.entrySet().stream().forEach(renameClassMapEntry -> {
-                        progress.onProgress(i.getAndIncrement(), renameClassMapEntry.getKey().getDeobfName());
-                        for (Map.Entry<Entry, String> entry : renameClassMapEntry.getValue().entrySet()) {
-                                Entry obfEntry = entry.getKey();
-
-                                removeMapping(obfEntry, false);
-                        }
-                });
-
-                translatorCache.clear();
-
-                renameClassMap.entrySet().stream().forEach(renameClassMapEntry -> {
-                        progress.onProgress(i.getAndIncrement(), renameClassMapEntry.getKey().getDeobfName());
-
-                        for (Map.Entry<Entry, String> entry : renameClassMapEntry.getValue().entrySet()) {
-                                Entry obfEntry = entry.getKey();
-                                String name = entry.getValue();
-
-                                if (name != null) {
-                                        try {
-                                                rename(obfEntry, name);
-                                        } catch (IllegalNameException exception) {
-                                                System.out.println("WARNING: " + exception.getMessage());
-                                        }
-                                }
-                        }
-                });
-        }
-
-        private void rebuildMethodNames(ClassMapping classMapping, Map<ClassMapping, Map<Entry, String>> renameClassMap) {
-                Map<Entry, String> renameEntries = new HashMap<>();
-
-                for (MethodMapping methodMapping : Lists.newArrayList(classMapping.methods())) {
-                        ClassEntry classObfEntry = classMapping.getObfEntry();
-                        MethodEntry obfEntry = methodMapping.getObfEntry(classObfEntry);
-                        boolean isProvider = isMethodProvider(obfEntry);
-
-                        if (hasDeobfuscatedName(obfEntry)
-                                        && !(methodMapping.getDeobfName().equals(methodMapping.getObfName()))) {
-                                renameEntries.put(obfEntry, isProvider ? methodMapping.getDeobfName() : null);
-                        }
-
-                        if (isProvider) {
-                                for (LocalVariableMapping localVariableMapping : methodMapping.arguments()) {
-                                        Entry argObfEntry = localVariableMapping.getObfEntry(obfEntry);
-                                        if (hasDeobfuscatedName(argObfEntry)) {
-                                                renameEntries.put(argObfEntry, deobfuscateEntry(argObfEntry).getName());
-                                        }
-                                }
-                        }
-                }
-
-                classMapping.markDirty();
-                renameClassMap.put(classMapping, renameEntries);
-                for (ClassMapping innerClass : classMapping.innerClasses()) {
-                        rebuildMethodNames(innerClass, renameClassMap);
+                        progress.step(count.get(), "Done:");
                 }
         }
 
-
         public void writeJar(File out, ProgressListener progress) {
                 transformJar(out, progress, createTypeLoader()::transformInto);
         }
@@ -470,7 +316,7 @@ public class Deobfuscator {
                         AtomicInteger i = new AtomicInteger();
                         parsedJar.visitNode(node -> {
                                 if (progress != null) {
-                                        progress.onProgress(i.getAndIncrement(), node.name);
+                                        progress.step(i.getAndIncrement(), node.name);
                                 }
 
                                 try {
@@ -485,50 +331,31 @@ public class Deobfuscator {
                         });
 
                         if (progress != null) {
-                                progress.onProgress(i.get(), "Done!");
+                                progress.step(i.get(), "Done!");
                         }
                 } catch (IOException ex) {
                         throw new Error("Unable to write to Jar file!");
                 }
         }
 
-        public <T extends Entry> T obfuscateEntry(T deobfEntry) {
-                if (deobfEntry == null) {
-                        return null;
-                }
-                T translatedEntry = getTranslator(TranslationDirection.OBFUSCATING).getTranslatedEntry(deobfEntry);
-                if (translatedEntry == null) {
-                        return deobfEntry;
-                }
-                return translatedEntry;
-        }
-
-        public <T extends Entry> T deobfuscateEntry(T obfEntry) {
-                if (obfEntry == null) {
-                        return null;
-                }
-                T translatedEntry = getTranslator(TranslationDirection.DEOBFUSCATING).getTranslatedEntry(obfEntry);
-                if (translatedEntry == null) {
-                        return obfEntry;
-                }
-                return translatedEntry;
-        }
-
-        public <E extends Entry, C extends Entry> EntryReference<E, C> obfuscateReference(EntryReference<E, C> deobfReference) {
-                if (deobfReference == null) {
-                        return null;
+        public AccessModifier getModifier(Entry<?> entry) {
+                EntryMapping mapping = mapper.getDeobfMapping(entry);
+                if (mapping == null) {
+                        return AccessModifier.UNCHANGED;
                 }
-                return new EntryReference<>(obfuscateEntry(deobfReference.entry), obfuscateEntry(deobfReference.context), deobfReference);
+                return mapping.getAccessModifier();
         }
 
-        public <E extends Entry, C extends Entry> EntryReference<E, C> deobfuscateReference(EntryReference<E, C> obfReference) {
-                if (obfReference == null) {
-                        return null;
+        public void changeModifier(Entry<?> entry, AccessModifier modifier) {
+                EntryMapping mapping = mapper.getDeobfMapping(entry);
+                if (mapping != null) {
+                        mapper.mapFromObf(entry, new EntryMapping(mapping.getTargetName(), modifier));
+                } else {
+                        mapper.mapFromObf(entry, new EntryMapping(entry.getName(), modifier));
                 }
-                return new EntryReference<>(deobfuscateEntry(obfReference.entry), deobfuscateEntry(obfReference.context), obfReference);
         }
 
-        public boolean isObfuscatedIdentifier(Entry obfEntry) {
+        public boolean isObfuscatedIdentifier(Entry<?> obfEntry) {
                 if (obfEntry instanceof MethodEntry) {
                         // HACKHACK: Object methods are not obfuscated identifiers
                         MethodEntry obfMethodEntry = (MethodEntry) obfEntry;
@@ -559,142 +386,30 @@ public class Deobfuscator {
                         }
                 }
 
-                return this.jarIndex.containsObfEntry(obfEntry);
+                return this.jarIndex.getEntryIndex().hasEntry(obfEntry);
         }
 
-        public boolean isRenameable(EntryReference<Entry, Entry> obfReference) {
+        public boolean isRenameable(EntryReference<Entry<?>, Entry<?>> obfReference) {
                 return obfReference.isNamed() && isObfuscatedIdentifier(obfReference.getNameableEntry());
         }
 
-        public boolean hasDeobfuscatedName(Entry obfEntry) {
-                Translator translator = getTranslator(TranslationDirection.DEOBFUSCATING);
-                if (obfEntry instanceof ClassEntry) {
-                        ClassEntry obfClass = (ClassEntry) obfEntry;
-                        List<ClassMapping> mappingChain = this.mappings.getClassMappingChain(obfClass);
-                        ClassMapping classMapping = mappingChain.get(mappingChain.size() - 1);
-                        return classMapping != null && classMapping.getDeobfName() != null;
-                } else if (obfEntry instanceof FieldEntry) {
-                        return translator.hasFieldMapping((FieldEntry) obfEntry);
-                } else if (obfEntry instanceof MethodEntry) {
-                        MethodEntry methodEntry = (MethodEntry) obfEntry;
-                        if (methodEntry.isConstructor()) {
-                                return false;
-                        }
-                        return translator.hasMethodMapping(methodEntry);
-                } else if (obfEntry instanceof LocalVariableEntry) {
-                        return translator.hasLocalVariableMapping((LocalVariableEntry) obfEntry);
-                } else {
-                        throw new Error("Unknown entry desc: " + obfEntry.getClass().getName());
-                }
+        public boolean hasDeobfuscatedName(Entry<?> obfEntry) {
+                return mapper.hasDeobfMapping(obfEntry);
         }
 
-        public void rename(Entry obfEntry, String newName) {
-                rename(obfEntry, newName, true);
+        public void rename(Entry<?> obfEntry, String newName) {
+                mapper.mapFromObf(obfEntry, new EntryMapping(newName));
         }
 
-        // NOTE: these methods are a bit messy... oh well
-
-        public void rename(Entry obfEntry, String newName, boolean clearCache) {
-                if (obfEntry instanceof ClassEntry) {
-                        this.renamer.setClassName((ClassEntry) obfEntry, newName);
-                } else if (obfEntry instanceof FieldEntry) {
-                        this.renamer.setFieldName((FieldEntry) obfEntry, newName);
-                } else if (obfEntry instanceof MethodEntry) {
-                        if (((MethodEntry) obfEntry).isConstructor()) {
-                                throw new IllegalArgumentException("Cannot rename constructors");
-                        }
-
-                        this.renamer.setMethodTreeName((MethodEntry) obfEntry, newName);
-                } else if (obfEntry instanceof LocalVariableEntry) {
-                        // TODO: Discern between arguments (propagate) and local vars (don't)
-                        this.renamer.setLocalVariableTreeName((LocalVariableEntry) obfEntry, newName);
-                } else {
-                        throw new Error("Unknown entry desc: " + obfEntry.getClass().getName());
-                }
-
-                // clear caches
-                if (clearCache)
-                        this.translatorCache.clear();
+        public void removeMapping(Entry<?> obfEntry) {
+                mapper.removeByObf(obfEntry);
         }
 
-        public void removeMapping(Entry obfEntry) {
-                removeMapping(obfEntry, true);
+        public void markAsDeobfuscated(Entry<?> obfEntry) {
+                mapper.mapFromObf(obfEntry, new EntryMapping(mapper.deobfuscate(obfEntry).getName()));
         }
 
-        public void removeMapping(Entry obfEntry, boolean clearCache) {
-                if (obfEntry instanceof ClassEntry) {
-                        this.renamer.removeClassMapping((ClassEntry) obfEntry);
-                } else if (obfEntry instanceof FieldEntry) {
-                        this.renamer.removeFieldMapping((FieldEntry) obfEntry);
-                } else if (obfEntry instanceof MethodEntry) {
-                        if (((MethodEntry) obfEntry).isConstructor()) {
-                                throw new IllegalArgumentException("Cannot rename constructors");
-                        }
-                        this.renamer.removeMethodTreeMapping((MethodEntry) obfEntry);
-                } else if (obfEntry instanceof LocalVariableEntry) {
-                        this.renamer.removeLocalVariableMapping((LocalVariableEntry) obfEntry);
-                } else {
-                        throw new Error("Unknown entry desc: " + obfEntry);
-                }
-
-                // clear caches
-                if (clearCache)
-                        this.translatorCache.clear();
-        }
-
-        public void markAsDeobfuscated(Entry obfEntry) {
-                markAsDeobfuscated(obfEntry, true);
-        }
-
-        public void markAsDeobfuscated(Entry obfEntry, boolean clearCache) {
-                if (obfEntry instanceof ClassEntry) {
-                        this.renamer.markClassAsDeobfuscated((ClassEntry) obfEntry);
-                } else if (obfEntry instanceof FieldEntry) {
-                        this.renamer.markFieldAsDeobfuscated((FieldEntry) obfEntry);
-                } else if (obfEntry instanceof MethodEntry) {
-                        MethodEntry methodEntry = (MethodEntry) obfEntry;
-                        if (methodEntry.isConstructor()) {
-                                throw new IllegalArgumentException("Cannot rename constructors");
-                        }
-                        this.renamer.markMethodTreeAsDeobfuscated(methodEntry);
-                } else if (obfEntry instanceof LocalVariableEntry) {
-                        this.renamer.markArgumentAsDeobfuscated((LocalVariableEntry) obfEntry);
-                } else {
-                        throw new Error("Unknown entry desc: " + obfEntry);
-                }
-
-                // clear caches
-                if (clearCache)
-                        this.translatorCache.clear();
-        }
-
-        public void changeModifier(Entry entry, Mappings.EntryModifier modifierEntry) {
-                Entry obfEntry = obfuscateEntry(entry);
-                if (obfEntry instanceof ClassEntry)
-                        this.renamer.setClassModifier((ClassEntry) obfEntry, modifierEntry);
-                else if (obfEntry instanceof FieldEntry)
-                        this.renamer.setFieldModifier((FieldEntry) obfEntry, modifierEntry);
-                else if (obfEntry instanceof MethodEntry)
-                        this.renamer.setMethodModifier((MethodEntry) obfEntry, modifierEntry);
-                else
-                        throw new Error("Unknown entry desc: " + obfEntry);
-        }
-
-        public Mappings.EntryModifier getModifier(Entry obfEntry) {
-                Entry entry = obfuscateEntry(obfEntry);
-                if (entry != null)
-                        obfEntry = entry;
-                if (obfEntry instanceof ClassEntry)
-                        return this.renamer.getClassModifier((ClassEntry) obfEntry);
-                else if (obfEntry instanceof FieldEntry)
-                        return this.renamer.getFieldModifier((FieldEntry) obfEntry);
-                else if (obfEntry instanceof MethodEntry)
-                        return this.renamer.getMethodModfifier((MethodEntry) obfEntry);
-                else
-                        throw new Error("Unknown entry desc: " + obfEntry);
-        }
-
-        public static void runCustomTransforms(AstBuilder builder, DecompilerContext context){
+        public static void runCustomTransforms(AstBuilder builder, DecompilerContext context) {
                 List<IAstTransform> transformers = Arrays.asList(
                                 new ObfuscatedEnumSwitchRewriterTransform(context),
                                 new VarargsFixer(context),
@@ -707,12 +422,6 @@ public class Deobfuscator {
                 }
         }
 
-        public interface ProgressListener {
-                void init(int totalWork, String title);
-
-                void onProgress(int numDone, String message);
-        }
-
         public interface ClassTransformer {
                 String transform(ClassNode node, ClassWriter writer);
         }
diff --git a/src/main/java/cuchaz/enigma/ITranslatingTypeLoader.java b/src/main/java/cuchaz/enigma/ITranslatingTypeLoader.java
index 547ed0b..24822dd 100644
--- a/src/main/java/cuchaz/enigma/ITranslatingTypeLoader.java
+++ b/src/main/java/cuchaz/enigma/ITranslatingTypeLoader.java
@@ -1,7 +1,7 @@
 package cuchaz.enigma;
 
 import com.strobel.assembler.metadata.ITypeLoader;
-import cuchaz.enigma.mapping.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.tree.ClassNode;
 
diff --git a/src/main/java/cuchaz/enigma/Main.java b/src/main/java/cuchaz/enigma/Main.java
index 0f15193..ccfc51f 100644
--- a/src/main/java/cuchaz/enigma/Main.java
+++ b/src/main/java/cuchaz/enigma/Main.java
@@ -11,12 +11,12 @@
 
 package cuchaz.enigma;
 
-import cuchaz.enigma.config.Config;
-import cuchaz.enigma.config.Themes;
 import cuchaz.enigma.gui.Gui;
+import cuchaz.enigma.translation.mapping.serde.MappingFormat;
 
-import javax.swing.*;
 import java.io.File;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.jar.JarFile;
 
 public class Main {
@@ -29,7 +29,12 @@ public class Main {
                         gui.getController().openJar(new JarFile(getFile(args[0])));
                 }
                 if (args.length >= 2) {
-                        gui.getController().openEnigmaMappings(getFile(args[1]));
+                        Path mappingsFile = getFile(args[1]).toPath();
+                        if (Files.isDirectory(mappingsFile)) {
+                                gui.getController().openMappings(MappingFormat.ENIGMA_DIRECTORY, mappingsFile);
+                        } else {
+                                gui.getController().openMappings(MappingFormat.ENIGMA_FILE, mappingsFile);
+                        }
                 }
 
                 // DEBUG
diff --git a/src/main/java/cuchaz/enigma/ProgressListener.java b/src/main/java/cuchaz/enigma/ProgressListener.java
new file mode 100644
index 0000000..ffce297
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/ProgressListener.java
@@ -0,0 +1,17 @@
+package cuchaz.enigma;
+
+public interface ProgressListener {
+        ProgressListener VOID = new ProgressListener() {
+                @Override
+                public void init(int totalWork, String title) {
+                }
+
+                @Override
+                public void step(int numDone, String message) {
+                }
+        };
+
+        void init(int totalWork, String title);
+
+        void step(int numDone, String message);
+}
diff --git a/src/main/java/cuchaz/enigma/SynchronizedTypeLoader.java b/src/main/java/cuchaz/enigma/SynchronizedTypeLoader.java
index f4a7fe0..657bee4 100644
--- a/src/main/java/cuchaz/enigma/SynchronizedTypeLoader.java
+++ b/src/main/java/cuchaz/enigma/SynchronizedTypeLoader.java
@@ -1,7 +1,7 @@
 package cuchaz.enigma;
 
 import com.strobel.assembler.metadata.Buffer;
-import cuchaz.enigma.mapping.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.tree.ClassNode;
 
diff --git a/src/main/java/cuchaz/enigma/TranslatingTypeLoader.java b/src/main/java/cuchaz/enigma/TranslatingTypeLoader.java
index 42ceec4..4c1f695 100644
--- a/src/main/java/cuchaz/enigma/TranslatingTypeLoader.java
+++ b/src/main/java/cuchaz/enigma/TranslatingTypeLoader.java
@@ -14,12 +14,12 @@ package cuchaz.enigma;
 import com.google.common.collect.Lists;
 import com.strobel.assembler.metadata.Buffer;
 import com.strobel.assembler.metadata.ITypeLoader;
-import cuchaz.enigma.analysis.JarIndex;
+import cuchaz.enigma.analysis.index.JarIndex;
 import cuchaz.enigma.analysis.ParsedJar;
 import cuchaz.enigma.bytecode.translators.TranslationClassVisitor;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.ReferencedEntryPool;
-import cuchaz.enigma.mapping.Translator;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.representation.ReferencedEntryPool;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.Opcodes;
 import org.objectweb.asm.tree.AbstractInsnNode;
@@ -47,12 +47,12 @@ public class TranslatingTypeLoader extends CachingTypeLoader implements ITransla
                 this.deobfuscatingTranslator = deobfuscatingTranslator;
         }
 
-        protected byte[] doLoad(String className){
+        protected byte[] doLoad(String className) {
                 byte[] data = loadType(className);
                 if (data == null) {
                         // chain to default desc loader
                         Buffer parentBuf = new Buffer();
-                        if (defaultTypeLoader.tryLoadType(className, parentBuf)){
+                        if (defaultTypeLoader.tryLoadType(className, parentBuf)) {
                                 return parentBuf.array();
                         }
                         return EMPTY_ARRAY;//need to return *something* as null means no store
@@ -64,21 +64,10 @@ public class TranslatingTypeLoader extends CachingTypeLoader implements ITransla
 
                 // NOTE: don't know if class name is obf or deobf
                 ClassEntry classEntry = new ClassEntry(className);
-                ClassEntry obfClassEntry = this.obfuscatingTranslator.getTranslatedClass(classEntry);
-
-                // is this an inner class referenced directly? (ie trying to load b instead of a$b)
-                if (!obfClassEntry.isInnerClass()) {
-                        List<ClassEntry> classChain = this.jarIndex.getObfClassChain(obfClassEntry);
-                        if (classChain.size() > 1) {
-                                System.err.println(String.format("WARNING: no class %s after inner class reconstruction. Try %s",
-                                                className, obfClassEntry.buildClassEntry(classChain)
-                                ));
-                                return null;
-                        }
-                }
+                ClassEntry obfClassEntry = this.obfuscatingTranslator.translate(classEntry);
 
                 // is this a class we should even know about?
-                if (!this.jarIndex.containsObfClass(obfClassEntry)) {
+                if (!jarIndex.getEntryIndex().hasClass(obfClassEntry)) {
                         return null;
                 }
 
@@ -97,15 +86,15 @@ public class TranslatingTypeLoader extends CachingTypeLoader implements ITransla
                 //      DUP
                 //      INVOKEVIRTUAL java/lang/Object.getClass ()Ljava/lang/Class;
                 //      POP
-                for (MethodNode methodNode : node.methods){
+                for (MethodNode methodNode : node.methods) {
                         AbstractInsnNode insnNode = methodNode.instructions.getFirst();
-                        while (insnNode != null){
-                                if (insnNode instanceof MethodInsnNode && insnNode.getOpcode() == Opcodes.INVOKEVIRTUAL){
-                                        MethodInsnNode methodInsnNode = (MethodInsnNode)insnNode;
-                                        if (methodInsnNode.name.equals("getClass") && methodInsnNode.owner.equals("java/lang/Object") && methodInsnNode.desc.equals("()Ljava/lang/Class;")){
+                        while (insnNode != null) {
+                                if (insnNode instanceof MethodInsnNode && insnNode.getOpcode() == Opcodes.INVOKEVIRTUAL) {
+                                        MethodInsnNode methodInsnNode = (MethodInsnNode) insnNode;
+                                        if (methodInsnNode.name.equals("getClass") && methodInsnNode.owner.equals("java/lang/Object") && methodInsnNode.desc.equals("()Ljava/lang/Class;")) {
                                                 AbstractInsnNode previous = methodInsnNode.getPrevious();
                                                 AbstractInsnNode next = methodInsnNode.getNext();
-                                                if (previous.getOpcode() == Opcodes.DUP && next.getOpcode() == Opcodes.POP){
+                                                if (previous.getOpcode() == Opcodes.DUP && next.getOpcode() == Opcodes.POP) {
                                                         insnNode = previous.getPrevious();//reset the iterator so it gets the new next instruction
                                                         methodNode.instructions.remove(previous);
                                                         methodNode.instructions.remove(methodInsnNode);
@@ -140,24 +129,26 @@ public class TranslatingTypeLoader extends CachingTypeLoader implements ITransla
 
         @Override
         public List<String> getClassNamesToTry(String className) {
-                return getClassNamesToTry(this.obfuscatingTranslator.getTranslatedClass(new ClassEntry(className)));
+                return getClassNamesToTry(this.obfuscatingTranslator.translate(new ClassEntry(className)));
         }
 
         @Override
         public List<String> getClassNamesToTry(ClassEntry obfClassEntry) {
                 List<String> classNamesToTry = Lists.newArrayList();
-                classNamesToTry.add(obfClassEntry.getName());
-                if (obfClassEntry.isInnerClass()) {
-                        // try just the inner class name
-                        classNamesToTry.add(obfClassEntry.getInnermostClassName());
+                classNamesToTry.add(obfClassEntry.getFullName());
+
+                ClassEntry outerClass = obfClassEntry.getOuterClass();
+                if (outerClass != null) {
+                        classNamesToTry.addAll(getClassNamesToTry(outerClass));
                 }
+
                 return classNamesToTry;
         }
 
         @Override
         public String transformInto(ClassNode node, ClassWriter writer) {
-                node.accept(new TranslationClassVisitor(deobfuscatingTranslator, jarIndex, entryPool, Opcodes.ASM5, writer));
-                return deobfuscatingTranslator.getTranslatedClass(new ClassEntry(node.name)).getName();
+                node.accept(new TranslationClassVisitor(deobfuscatingTranslator, entryPool, Opcodes.ASM5, writer));
+                return deobfuscatingTranslator.translate(new ClassEntry(node.name)).getFullName();
         }
 
 }
diff --git a/src/main/java/cuchaz/enigma/analysis/Access.java b/src/main/java/cuchaz/enigma/analysis/Access.java
index 8181418..82ca669 100644
--- a/src/main/java/cuchaz/enigma/analysis/Access.java
+++ b/src/main/java/cuchaz/enigma/analysis/Access.java
@@ -11,7 +11,7 @@
 
 package cuchaz.enigma.analysis;
 
-import cuchaz.enigma.bytecode.AccessFlags;
+import cuchaz.enigma.translation.representation.AccessFlags;
 
 import java.lang.reflect.Modifier;
 
diff --git a/src/main/java/cuchaz/enigma/analysis/ClassImplementationsTreeNode.java b/src/main/java/cuchaz/enigma/analysis/ClassImplementationsTreeNode.java
index e876bb0..0fc44ca 100644
--- a/src/main/java/cuchaz/enigma/analysis/ClassImplementationsTreeNode.java
+++ b/src/main/java/cuchaz/enigma/analysis/ClassImplementationsTreeNode.java
@@ -12,26 +12,28 @@
 package cuchaz.enigma.analysis;
 
 import com.google.common.collect.Lists;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.MethodEntry;
-import cuchaz.enigma.mapping.Translator;
+import cuchaz.enigma.analysis.index.InheritanceIndex;
+import cuchaz.enigma.analysis.index.JarIndex;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
 
 import javax.swing.tree.DefaultMutableTreeNode;
+import java.util.Collection;
 import java.util.List;
 
 public class ClassImplementationsTreeNode extends DefaultMutableTreeNode {
-
-        private final Translator deobfuscatingTranslator;
+        private final Translator translator;
         private final ClassEntry entry;
 
-        public ClassImplementationsTreeNode(Translator deobfuscatingTranslator, ClassEntry entry) {
-                this.deobfuscatingTranslator = deobfuscatingTranslator;
+        public ClassImplementationsTreeNode(Translator translator, ClassEntry entry) {
+                this.translator = translator;
                 this.entry = entry;
         }
 
         public static ClassImplementationsTreeNode findNode(ClassImplementationsTreeNode node, MethodEntry entry) {
                 // is this the node?
-                if (node.entry.equals(entry.getOwnerClassEntry())) {
+                if (node.entry.equals(entry.getParent())) {
                         return node;
                 }
 
@@ -49,24 +51,19 @@ public class ClassImplementationsTreeNode extends DefaultMutableTreeNode {
                 return this.entry;
         }
 
-        public String getDeobfClassName() {
-                return this.deobfuscatingTranslator.getTranslatedClass(entry).getClassName();
-        }
-
         @Override
         public String toString() {
-                String className = getDeobfClassName();
-                if (className == null) {
-                        className = this.entry.getClassName();
-                }
-                return className;
+                return translator.translate(entry).toString();
         }
 
         public void load(JarIndex index) {
                 // get all method implementations
                 List<ClassImplementationsTreeNode> nodes = Lists.newArrayList();
-                for (String implementingClassName : index.getImplementingClasses(this.entry.getClassName())) {
-                        nodes.add(new ClassImplementationsTreeNode(this.deobfuscatingTranslator, new ClassEntry(implementingClassName)));
+                InheritanceIndex inheritanceIndex = index.getInheritanceIndex();
+
+                Collection<ClassEntry> inheritors = inheritanceIndex.getChildren(entry);
+                for (ClassEntry inheritor : inheritors) {
+                        nodes.add(new ClassImplementationsTreeNode(translator, inheritor));
                 }
 
                 // add them to this node
diff --git a/src/main/java/cuchaz/enigma/analysis/ClassInheritanceTreeNode.java b/src/main/java/cuchaz/enigma/analysis/ClassInheritanceTreeNode.java
index b8ee17d..7904c5f 100644
--- a/src/main/java/cuchaz/enigma/analysis/ClassInheritanceTreeNode.java
+++ b/src/main/java/cuchaz/enigma/analysis/ClassInheritanceTreeNode.java
@@ -12,25 +12,25 @@
 package cuchaz.enigma.analysis;
 
 import com.google.common.collect.Lists;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.Translator;
+import cuchaz.enigma.analysis.index.InheritanceIndex;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
 
 import javax.swing.tree.DefaultMutableTreeNode;
 import java.util.List;
 
 public class ClassInheritanceTreeNode extends DefaultMutableTreeNode {
-
-        private final Translator deobfuscatingTranslator;
+        private final Translator translator;
         private final ClassEntry obfClassEntry;
 
-        public ClassInheritanceTreeNode(Translator deobfuscatingTranslator, String obfClassName) {
-                this.deobfuscatingTranslator = deobfuscatingTranslator;
+        public ClassInheritanceTreeNode(Translator translator, String obfClassName) {
+                this.translator = translator;
                 this.obfClassEntry = new ClassEntry(obfClassName);
         }
 
         public static ClassInheritanceTreeNode findNode(ClassInheritanceTreeNode node, ClassEntry entry) {
                 // is this the node?
-                if (node.getObfClassName().equals(entry.getName())) {
+                if (node.getObfClassName().equals(entry.getFullName())) {
                         return node;
                 }
 
@@ -45,27 +45,19 @@ public class ClassInheritanceTreeNode extends DefaultMutableTreeNode {
         }
 
         public String getObfClassName() {
-                return this.obfClassEntry.getClassName();
-        }
-
-        public String getDeobfClassName() {
-                return this.deobfuscatingTranslator.getTranslatedClass(this.obfClassEntry).getClassName();
+                return this.obfClassEntry.getFullName();
         }
 
         @Override
         public String toString() {
-                String deobfClassName = getDeobfClassName();
-                if (deobfClassName != null) {
-                        return deobfClassName;
-                }
-                return this.obfClassEntry.getName();
+                return translator.translate(obfClassEntry).getFullName();
         }
 
-        public void load(TranslationIndex ancestries, boolean recurse) {
+        public void load(InheritanceIndex ancestries, boolean recurse) {
                 // get all the child nodes
                 List<ClassInheritanceTreeNode> nodes = Lists.newArrayList();
-                for (ClassEntry subclassEntry : ancestries.getSubclass(this.obfClassEntry)) {
-                        nodes.add(new ClassInheritanceTreeNode(this.deobfuscatingTranslator, subclassEntry.getName()));
+                for (ClassEntry inheritor : ancestries.getChildren(this.obfClassEntry)) {
+                        nodes.add(new ClassInheritanceTreeNode(translator, inheritor.getFullName()));
                 }
 
                 // add them to this node
diff --git a/src/main/java/cuchaz/enigma/analysis/ClassReferenceTreeNode.java b/src/main/java/cuchaz/enigma/analysis/ClassReferenceTreeNode.java
index ff5f2e9..90d8a6c 100644
--- a/src/main/java/cuchaz/enigma/analysis/ClassReferenceTreeNode.java
+++ b/src/main/java/cuchaz/enigma/analysis/ClassReferenceTreeNode.java
@@ -12,12 +12,12 @@
 package cuchaz.enigma.analysis;
 
 import com.google.common.collect.Sets;
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.Translator;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.Entry;
-import cuchaz.enigma.mapping.entry.MethodDefEntry;
-import cuchaz.enigma.mapping.entry.MethodEntry;
+import cuchaz.enigma.analysis.index.JarIndex;
+import cuchaz.enigma.analysis.index.ReferenceIndex;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.Entry;
+import cuchaz.enigma.translation.representation.entry.MethodDefEntry;
 
 import javax.swing.tree.DefaultMutableTreeNode;
 import javax.swing.tree.TreeNode;
@@ -29,7 +29,6 @@ public class ClassReferenceTreeNode extends DefaultMutableTreeNode
         private Translator deobfuscatingTranslator;
         private ClassEntry entry;
         private EntryReference<ClassEntry, MethodDefEntry> reference;
-        private AccessFlags access;
 
         public ClassReferenceTreeNode(Translator deobfuscatingTranslator, ClassEntry entry) {
                 this.deobfuscatingTranslator = deobfuscatingTranslator;
@@ -37,12 +36,10 @@ public class ClassReferenceTreeNode extends DefaultMutableTreeNode
                 this.reference = null;
         }
 
-        public ClassReferenceTreeNode(Translator deobfuscatingTranslator,
-                                  EntryReference<ClassEntry, MethodDefEntry> reference, AccessFlags access) {
+        public ClassReferenceTreeNode(Translator deobfuscatingTranslator, EntryReference<ClassEntry, MethodDefEntry> reference) {
                 this.deobfuscatingTranslator = deobfuscatingTranslator;
                 this.entry = reference.entry;
                 this.reference = reference;
-                this.access = access;
         }
 
         @Override
@@ -58,16 +55,17 @@ public class ClassReferenceTreeNode extends DefaultMutableTreeNode
         @Override
         public String toString() {
                 if (this.reference != null) {
-                        return String.format("%s (%s)", this.deobfuscatingTranslator.getTranslatedMethodDef(this.reference.context),
-                                this.access);
+                        return String.format("%s", this.deobfuscatingTranslator.translate(this.reference.context));
                 }
-                return this.deobfuscatingTranslator.getTranslatedClass(this.entry).getName();
+                return this.deobfuscatingTranslator.translate(this.entry).getFullName();
         }
 
         public void load(JarIndex index, boolean recurse) {
+                ReferenceIndex referenceIndex = index.getReferenceIndex();
+
                 // get all the child nodes
-                for (EntryReference<ClassEntry, MethodDefEntry> reference : index.getMethodsReferencing(this.entry)) {
-                        add(new ClassReferenceTreeNode(this.deobfuscatingTranslator, reference, index.getAccessFlags(this.entry)));
+                for (EntryReference<ClassEntry, MethodDefEntry> reference : referenceIndex.getReferencesToClass(this.entry)) {
+                        add(new ClassReferenceTreeNode(this.deobfuscatingTranslator, reference));
                 }
 
                 if (recurse && this.children != null) {
@@ -76,7 +74,7 @@ public class ClassReferenceTreeNode extends DefaultMutableTreeNode
                                         ClassReferenceTreeNode node = (ClassReferenceTreeNode) child;
 
                                         // don't recurse into ancestor
-                                        Set<Entry> ancestors = Sets.newHashSet();
+                                        Set<Entry<?>> ancestors = Sets.newHashSet();
                                         TreeNode n = node;
                                         while (n.getParent() != null) {
                                                 n = n.getParent();
diff --git a/src/main/java/cuchaz/enigma/analysis/EntryReference.java b/src/main/java/cuchaz/enigma/analysis/EntryReference.java
index df36c23..e122210 100644
--- a/src/main/java/cuchaz/enigma/analysis/EntryReference.java
+++ b/src/main/java/cuchaz/enigma/analysis/EntryReference.java
@@ -11,15 +11,20 @@
 
 package cuchaz.enigma.analysis;
 
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.Entry;
-import cuchaz.enigma.mapping.entry.MethodEntry;
+import cuchaz.enigma.translation.Translatable;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.EntryResolver;
+import cuchaz.enigma.translation.mapping.EntryMap;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.Entry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
 import cuchaz.enigma.utils.Utils;
 
 import java.util.Arrays;
 import java.util.List;
 
-public class EntryReference<E extends Entry, C extends Entry> {
+public class EntryReference<E extends Entry<?>, C extends Entry<?>> implements Translatable {
 
         private static final List<String> CONSTRUCTOR_NON_NAMES = Arrays.asList("this", "super", "static");
         public E entry;
@@ -53,32 +58,24 @@ public class EntryReference<E extends Entry, C extends Entry> {
 
         public ClassEntry getLocationClassEntry() {
                 if (context != null) {
-                        return context.getOwnerClassEntry();
+                        return context.getContainingClass();
                 }
-                return entry.getOwnerClassEntry();
+                return entry.getContainingClass();
         }
 
         public boolean isNamed() {
                 return this.sourceName;
         }
 
-        public Entry getNameableEntry() {
+        public Entry<?> getNameableEntry() {
                 if (entry instanceof MethodEntry && ((MethodEntry) entry).isConstructor()) {
                         // renaming a constructor really means renaming the class
-                        return entry.getOwnerClassEntry();
+                        return entry.getContainingClass();
                 }
                 return entry;
         }
 
         public String getNameableName() {
-                if (getNameableEntry() instanceof ClassEntry) {
-                        ClassEntry classEntry = (ClassEntry) getNameableEntry();
-                        if (classEntry.isInnerClass()) {
-                                // make sure we only rename the inner class name
-                                return classEntry.getInnermostClassName();
-                        }
-                }
-
                 return getNameableEntry().getName();
         }
 
@@ -121,4 +118,9 @@ public class EntryReference<E extends Entry, C extends Entry> {
                 }
                 return buf.toString();
         }
+
+        @Override
+        public Translatable translate(Translator translator, EntryResolver resolver, EntryMap<EntryMapping> mappings) {
+                return new EntryReference<>(translator.translate(entry), translator.translate(context), this);
+        }
 }
diff --git a/src/main/java/cuchaz/enigma/analysis/EntryRenamer.java b/src/main/java/cuchaz/enigma/analysis/EntryRenamer.java
deleted file mode 100644
index c474d68..0000000
--- a/src/main/java/cuchaz/enigma/analysis/EntryRenamer.java
+++ /dev/null
@@ -1,167 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.analysis;
-
-import com.google.common.collect.Lists;
-import com.google.common.collect.Multimap;
-import com.google.common.collect.Sets;
-import cuchaz.enigma.mapping.*;
-import cuchaz.enigma.mapping.entry.*;
-
-import java.util.AbstractMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-
-public class EntryRenamer {
-
-        public static <T> void renameClassesInSet(Map<String, String> renames, Set<T> set) {
-                List<T> entries = Lists.newArrayList();
-                for (T val : set) {
-                        entries.add(renameClassesInThing(renames, val));
-                }
-                set.clear();
-                set.addAll(entries);
-        }
-
-        public static <Key, Val> void renameClassesInMap(Map<String, String> renames, Map<Key, Val> map) {
-                // for each key/value pair...
-                Set<Map.Entry<Key, Val>> entriesToAdd = Sets.newHashSet();
-                for (Map.Entry<Key, Val> entry : map.entrySet()) {
-                        entriesToAdd.add(new AbstractMap.SimpleEntry<>(renameClassesInThing(renames, entry.getKey()), renameClassesInThing(renames, entry.getValue())));
-                }
-                map.clear();
-                for (Map.Entry<Key, Val> entry : entriesToAdd) {
-                        map.put(entry.getKey(), entry.getValue());
-                }
-        }
-
-        public static <Key, Val> void renameClassesInMultimap(Map<String, String> renames, Multimap<Key, Val> map) {
-                // for each key/value pair...
-                Set<Map.Entry<Key, Val>> entriesToAdd = Sets.newHashSet();
-                for (Map.Entry<Key, Val> entry : map.entries()) {
-                        entriesToAdd.add(new AbstractMap.SimpleEntry<>(renameClassesInThing(renames, entry.getKey()), renameClassesInThing(renames, entry.getValue())));
-                }
-                map.clear();
-                for (Map.Entry<Key, Val> entry : entriesToAdd) {
-                        map.put(entry.getKey(), entry.getValue());
-                }
-        }
-
-        public static <Key, Val> void renameMethodsInMultimap(Map<MethodEntry, MethodEntry> renames, Multimap<Key, Val> map) {
-                // for each key/value pair...
-                Set<Map.Entry<Key, Val>> entriesToAdd = Sets.newHashSet();
-                for (Map.Entry<Key, Val> entry : map.entries()) {
-                        entriesToAdd.add(new AbstractMap.SimpleEntry<>(renameMethodsInThing(renames, entry.getKey()), renameMethodsInThing(renames, entry.getValue())));
-                }
-                map.clear();
-                for (Map.Entry<Key, Val> entry : entriesToAdd) {
-                        map.put(entry.getKey(), entry.getValue());
-                }
-        }
-
-        public static <Key, Val> void renameMethodsInMap(Map<MethodEntry, MethodEntry> renames, Map<Key, Val> map) {
-                // for each key/value pair...
-                Set<Map.Entry<Key, Val>> entriesToAdd = Sets.newHashSet();
-                for (Map.Entry<Key, Val> entry : map.entrySet()) {
-                        entriesToAdd.add(new AbstractMap.SimpleEntry<>(renameMethodsInThing(renames, entry.getKey()), renameMethodsInThing(renames, entry.getValue())));
-                }
-                map.clear();
-                for (Map.Entry<Key, Val> entry : entriesToAdd) {
-                        map.put(entry.getKey(), entry.getValue());
-                }
-        }
-
-        @SuppressWarnings("unchecked")
-        public static <T> T renameMethodsInThing(Map<MethodEntry, MethodEntry> renames, T thing) {
-                if (thing instanceof MethodEntry) {
-                        MethodEntry methodEntry = (MethodEntry) thing;
-                        MethodEntry newMethodEntry = renames.get(methodEntry);
-                        if (newMethodEntry != null) {
-                                return (T) new MethodEntry(
-                                                methodEntry.getOwnerClassEntry(),
-                                                newMethodEntry.getName(),
-                                                methodEntry.getDesc()
-                                );
-                        }
-                        return thing;
-                } else if (thing instanceof LocalVariableEntry) {
-                        LocalVariableEntry variableEntry = (LocalVariableEntry) thing;
-                        return (T) new LocalVariableEntry(
-                                        renameMethodsInThing(renames, variableEntry.getOwnerEntry()),
-                                        variableEntry.getIndex(),
-                                        variableEntry.getName(),
-                                        variableEntry.isParameter()
-                        );
-                } else if (thing instanceof EntryReference) {
-                        EntryReference<Entry, Entry> reference = (EntryReference<Entry, Entry>) thing;
-                        reference.entry = renameMethodsInThing(renames, reference.entry);
-                        reference.context = renameMethodsInThing(renames, reference.context);
-                        return thing;
-                }
-                return thing;
-        }
-
-        @SuppressWarnings("unchecked")
-        public static <T> T renameClassesInThing(final Map<String, String> renames, T thing) {
-                if (thing instanceof String) {
-                        String stringEntry = (String) thing;
-                        if (renames.containsKey(stringEntry)) {
-                                return (T) renames.get(stringEntry);
-                        }
-                } else if (thing instanceof ClassEntry) {
-                        ClassEntry classEntry = (ClassEntry) thing;
-                        return (T) new ClassEntry(renameClassesInThing(renames, classEntry.getClassName()));
-                } else if (thing instanceof FieldDefEntry) {
-                        FieldDefEntry fieldEntry = (FieldDefEntry) thing;
-                        return (T) new FieldDefEntry(
-                                        renameClassesInThing(renames, fieldEntry.getOwnerClassEntry()),
-                                        fieldEntry.getName(),
-                                        renameClassesInThing(renames, fieldEntry.getDesc()),
-                                        renameClassesInThing(renames, fieldEntry.getSignature()),
-                                        fieldEntry.getAccess()
-                        );
-                } else if (thing instanceof MethodDefEntry) {
-                        MethodDefEntry methodEntry = (MethodDefEntry) thing;
-                        return (T) new MethodDefEntry(
-                                        renameClassesInThing(renames, methodEntry.getOwnerClassEntry()),
-                                        methodEntry.getName(),
-                                        renameClassesInThing(renames, methodEntry.getDesc()),
-                                        renameClassesInThing(renames, methodEntry.getSignature()),
-                                        methodEntry.getAccess()
-                        );
-                } else if (thing instanceof MethodEntry) {
-                        MethodEntry methodEntry = (MethodEntry) thing;
-                        return (T) new MethodEntry(
-                                        renameClassesInThing(renames, methodEntry.getOwnerClassEntry()),
-                                        methodEntry.getName(),
-                                        renameClassesInThing(renames, methodEntry.getDesc())
-                        );
-                } else if (thing instanceof LocalVariableEntry) {
-                        LocalVariableEntry argumentEntry = (LocalVariableEntry) thing;
-                        return (T) new LocalVariableEntry(renameClassesInThing(renames, argumentEntry.getOwnerEntry()), argumentEntry.getIndex(), argumentEntry.getName(), argumentEntry.isParameter());
-                } else if (thing instanceof EntryReference) {
-                        EntryReference<Entry, Entry> reference = (EntryReference<Entry, Entry>) thing;
-                        reference.entry = renameClassesInThing(renames, reference.entry);
-                        reference.context = renameClassesInThing(renames, reference.context);
-                        return thing;
-                } else if (thing instanceof MethodDescriptor) {
-                        return (T) ((MethodDescriptor) thing).remap(className -> renameClassesInThing(renames, className));
-                } else if (thing instanceof TypeDescriptor) {
-                        return (T) ((TypeDescriptor) thing).remap(className -> renameClassesInThing(renames, className));
-                } else if (thing instanceof Signature) {
-                        return (T) ((Signature) thing).remap(className -> renameClassesInThing(renames, className));
-                }
-
-                return thing;
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/analysis/FieldReferenceTreeNode.java b/src/main/java/cuchaz/enigma/analysis/FieldReferenceTreeNode.java
index 2318a2b..4beab7f 100644
--- a/src/main/java/cuchaz/enigma/analysis/FieldReferenceTreeNode.java
+++ b/src/main/java/cuchaz/enigma/analysis/FieldReferenceTreeNode.java
@@ -11,32 +11,31 @@
 
 package cuchaz.enigma.analysis;
 
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.*;
-import cuchaz.enigma.mapping.entry.FieldEntry;
-import cuchaz.enigma.mapping.entry.MethodDefEntry;
-import cuchaz.enigma.mapping.entry.MethodEntry;
+import cuchaz.enigma.analysis.index.JarIndex;
+import cuchaz.enigma.analysis.index.ReferenceIndex;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.representation.entry.FieldEntry;
+import cuchaz.enigma.translation.representation.entry.MethodDefEntry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
 
 import javax.swing.tree.DefaultMutableTreeNode;
 
 public class FieldReferenceTreeNode extends DefaultMutableTreeNode implements ReferenceTreeNode<FieldEntry, MethodDefEntry> {
 
-        private Translator deobfuscatingTranslator;
+        private final Translator translator;
         private FieldEntry entry;
         private EntryReference<FieldEntry, MethodDefEntry> reference;
-        private AccessFlags access;
 
-        public FieldReferenceTreeNode(Translator deobfuscatingTranslator, FieldEntry entry) {
-                this.deobfuscatingTranslator = deobfuscatingTranslator;
+        public FieldReferenceTreeNode(Translator translator, FieldEntry entry) {
+                this.translator = translator;
                 this.entry = entry;
                 this.reference = null;
         }
 
-        private FieldReferenceTreeNode(Translator deobfuscatingTranslator, EntryReference<FieldEntry, MethodDefEntry> reference, AccessFlags access) {
-                this.deobfuscatingTranslator = deobfuscatingTranslator;
+        private FieldReferenceTreeNode(Translator translator, EntryReference<FieldEntry, MethodDefEntry> reference) {
+                this.translator = translator;
                 this.entry = reference.entry;
                 this.reference = reference;
-                this.access = access;
         }
 
         @Override
@@ -52,27 +51,29 @@ public class FieldReferenceTreeNode extends DefaultMutableTreeNode implements Re
         @Override
         public String toString() {
                 if (this.reference != null) {
-                        return String.format("%s (%s)", this.deobfuscatingTranslator.getTranslatedMethodDef(this.reference.context), this.access);
+                        return String.format("%s", translator.translate(this.reference.context));
                 }
-                return deobfuscatingTranslator.getTranslatedField(entry).getName();
+                return translator.translate(entry).toString();
         }
 
         public void load(JarIndex index, boolean recurse) {
+                ReferenceIndex referenceIndex = index.getReferenceIndex();
+
                 // get all the child nodes
                 if (this.reference == null) {
-                        for (EntryReference<FieldEntry, MethodDefEntry> reference : index.getFieldReferences(this.entry)) {
-                                add(new FieldReferenceTreeNode(this.deobfuscatingTranslator, reference, index.getAccessFlags(this.entry)));
+                        for (EntryReference<FieldEntry, MethodDefEntry> reference : referenceIndex.getReferencesToField(this.entry)) {
+                                add(new FieldReferenceTreeNode(translator, reference));
                         }
                 } else {
-                        for (EntryReference<MethodEntry, MethodDefEntry> reference : index.getMethodsReferencing(this.reference.context)) {
-                                add(new MethodReferenceTreeNode(this.deobfuscatingTranslator, reference, index.getAccessFlags(this.reference.context)));
+                        for (EntryReference<MethodEntry, MethodDefEntry> reference : referenceIndex.getReferencesToMethod(this.reference.context)) {
+                                add(new MethodReferenceTreeNode(translator, reference));
                         }
                 }
 
                 if (recurse && children != null) {
                         for (Object node : children) {
                                 if (node instanceof MethodReferenceTreeNode) {
-                                        ((MethodReferenceTreeNode) node).load(index, true);
+                                        ((MethodReferenceTreeNode) node).load(index, true, false);
                                 } else if (node instanceof FieldReferenceTreeNode) {
                                         ((FieldReferenceTreeNode) node).load(index, true);
                                 }
diff --git a/src/main/java/cuchaz/enigma/analysis/IndexInnerClassVisitor.java b/src/main/java/cuchaz/enigma/analysis/IndexInnerClassVisitor.java
deleted file mode 100644
index b6ab2d5..0000000
--- a/src/main/java/cuchaz/enigma/analysis/IndexInnerClassVisitor.java
+++ /dev/null
@@ -1,29 +0,0 @@
-package cuchaz.enigma.analysis;
-
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import org.objectweb.asm.ClassVisitor;
-
-public class IndexInnerClassVisitor extends ClassVisitor {
-        private final JarIndex index;
-
-        public IndexInnerClassVisitor(JarIndex index, int api) {
-                super(api);
-                this.index = index;
-        }
-
-        public IndexInnerClassVisitor(JarIndex index, int api, ClassVisitor cv) {
-                super(api, cv);
-                this.index = index;
-        }
-
-        @Override
-        public void visitInnerClass(String name, String outerName, String innerName, int access) {
-                ClassEntry entry = new ClassEntry(name);
-                // Ignore anonymous classes
-                if (innerName != null && outerName != null) {
-                        ClassEntry outerEntry = new ClassEntry(outerName);
-                        index.indexInnerClass(entry, outerEntry);
-                }
-                super.visitInnerClass(name, outerName, innerName, access);
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/analysis/IndexReferenceVisitor.java b/src/main/java/cuchaz/enigma/analysis/IndexReferenceVisitor.java
deleted file mode 100644
index f37f1e9..0000000
--- a/src/main/java/cuchaz/enigma/analysis/IndexReferenceVisitor.java
+++ /dev/null
@@ -1,77 +0,0 @@
-package cuchaz.enigma.analysis;
-
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.MethodDescriptor;
-import cuchaz.enigma.mapping.Signature;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.MethodDefEntry;
-import org.objectweb.asm.ClassVisitor;
-import org.objectweb.asm.Handle;
-import org.objectweb.asm.MethodVisitor;
-import org.objectweb.asm.Opcodes;
-
-public class IndexReferenceVisitor extends ClassVisitor {
-        private final JarIndex index;
-        private ClassEntry classEntry;
-
-        public IndexReferenceVisitor(JarIndex index, int api) {
-                super(api);
-                this.index = index;
-        }
-
-        @Override
-        public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
-                this.classEntry = new ClassEntry(name);
-        }
-
-        @Override
-        public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
-                MethodDefEntry entry = new MethodDefEntry(classEntry, name, new MethodDescriptor(desc), Signature.createSignature(signature), new AccessFlags(access));
-                return new Method(this.index, entry, this.api);
-        }
-
-        private class Method extends MethodVisitor {
-                private final JarIndex index;
-                private final MethodDefEntry callerEntry;
-
-                public Method(JarIndex index, MethodDefEntry callerEntry, int api) {
-                        super(api);
-                        this.index = index;
-                        this.callerEntry = callerEntry;
-                }
-
-                @Override
-                public void visitFieldInsn(int opcode, String owner, String name, String desc) {
-                        this.index.indexFieldAccess(callerEntry, owner, name, desc);
-                }
-
-                @Override
-                public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) {
-                        this.index.indexMethodCall(callerEntry, owner, name, desc);
-                }
-
-                @Override
-                public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs) {
-                        for (Object bsmArg : bsmArgs){
-                                if (bsmArg instanceof Handle){
-                                        Handle handle = (Handle)bsmArg;
-                                        switch (handle.getTag()){
-                                                case Opcodes.H_GETFIELD:
-                                                case Opcodes.H_GETSTATIC:
-                                                case Opcodes.H_PUTFIELD:
-                                                case Opcodes.H_PUTSTATIC:
-                                                        this.index.indexFieldAccess(callerEntry, handle.getOwner(), handle.getName(), handle.getDesc());
-                                                        break;
-                                                case Opcodes.H_INVOKEINTERFACE:
-                                                case Opcodes.H_INVOKESPECIAL:
-                                                case Opcodes.H_INVOKESTATIC:
-                                                case Opcodes.H_INVOKEVIRTUAL:
-                                                case Opcodes.H_NEWINVOKESPECIAL:
-                                                        this.index.indexMethodCall(callerEntry, handle.getOwner(), handle.getName(), handle.getDesc());
-                                                        break;
-                                        }
-                                }
-                        }
-                }
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/analysis/IndexTreeBuilder.java b/src/main/java/cuchaz/enigma/analysis/IndexTreeBuilder.java
new file mode 100644
index 0000000..4ca7cd1
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/analysis/IndexTreeBuilder.java
@@ -0,0 +1,87 @@
+package cuchaz.enigma.analysis;
+
+import com.google.common.collect.Lists;
+import cuchaz.enigma.analysis.index.EntryIndex;
+import cuchaz.enigma.analysis.index.JarIndex;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.ResolutionStrategy;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
+
+import java.util.List;
+
+public class IndexTreeBuilder {
+        private final JarIndex index;
+
+        public IndexTreeBuilder(JarIndex index) {
+                this.index = index;
+        }
+
+        public ClassInheritanceTreeNode buildClassInheritance(Translator translator, ClassEntry obfClassEntry) {
+                // get the root node
+                List<String> ancestry = Lists.newArrayList();
+                ancestry.add(obfClassEntry.getFullName());
+                for (ClassEntry classEntry : index.getInheritanceIndex().getAncestors(obfClassEntry)) {
+                        ancestry.add(classEntry.getFullName());
+                }
+
+                ClassInheritanceTreeNode rootNode = new ClassInheritanceTreeNode(translator, ancestry.get(ancestry.size() - 1));
+
+                // expand all children recursively
+                rootNode.load(index.getInheritanceIndex(), true);
+
+                return rootNode;
+        }
+
+        public ClassImplementationsTreeNode buildClassImplementations(Translator translator, ClassEntry obfClassEntry) {
+                if (index.getInheritanceIndex().isParent(obfClassEntry)) {
+                        ClassImplementationsTreeNode node = new ClassImplementationsTreeNode(translator, obfClassEntry);
+                        node.load(index);
+                        return node;
+                }
+                return null;
+        }
+
+        public MethodInheritanceTreeNode buildMethodInheritance(Translator translator, MethodEntry obfMethodEntry) {
+                MethodEntry resolvedEntry = index.getEntryResolver().resolveFirstEntry(obfMethodEntry, ResolutionStrategy.RESOLVE_ROOT);
+
+                // make a root node at the base
+                MethodInheritanceTreeNode rootNode = new MethodInheritanceTreeNode(
+                                translator, resolvedEntry,
+                                index.getEntryIndex().hasMethod(resolvedEntry)
+                );
+
+                // expand the full tree
+                rootNode.load(index, true);
+
+                return rootNode;
+        }
+
+        public List<MethodImplementationsTreeNode> buildMethodImplementations(Translator translator, MethodEntry obfMethodEntry) {
+                EntryIndex entryIndex = index.getEntryIndex();
+
+                List<MethodEntry> ancestorMethodEntries = Lists.newArrayList();
+
+                if (entryIndex.hasMethod(obfMethodEntry)) {
+                        ancestorMethodEntries.add(obfMethodEntry);
+                }
+
+                for (ClassEntry ancestorEntry : index.getInheritanceIndex().getAncestors(obfMethodEntry.getParent())) {
+                        MethodEntry ancestorMethod = obfMethodEntry.withParent(ancestorEntry);
+                        if (entryIndex.hasMethod(ancestorMethod)) {
+                                ancestorMethodEntries.add(ancestorMethod);
+                        }
+                }
+
+                List<MethodImplementationsTreeNode> nodes = Lists.newArrayList();
+                if (!ancestorMethodEntries.isEmpty()) {
+                        for (MethodEntry interfaceMethodEntry : ancestorMethodEntries) {
+                                MethodImplementationsTreeNode node = new MethodImplementationsTreeNode(translator, interfaceMethodEntry);
+                                node.load(index);
+                                nodes.add(node);
+                        }
+                }
+
+                return nodes;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/analysis/JarIndex.java b/src/main/java/cuchaz/enigma/analysis/JarIndex.java
deleted file mode 100644
index 361c8e7..0000000
--- a/src/main/java/cuchaz/enigma/analysis/JarIndex.java
+++ /dev/null
@@ -1,583 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.analysis;
-
-import com.google.common.collect.*;
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.*;
-import cuchaz.enigma.mapping.entry.*;
-import org.objectweb.asm.ClassReader;
-import org.objectweb.asm.ClassVisitor;
-import org.objectweb.asm.Opcodes;
-
-import java.util.*;
-
-public class JarIndex {
-
-        private final ReferencedEntryPool entryPool;
-
-        private Set<ClassEntry> obfClassEntries;
-        private TranslationIndex translationIndex;
-        private Map<Entry, AccessFlags> access;
-        private Multimap<ClassEntry, FieldDefEntry> fields;
-        private Multimap<ClassEntry, MethodDefEntry> methods;
-        private Multimap<String, MethodDefEntry> methodImplementations;
-        private Multimap<MethodEntry, EntryReference<MethodEntry, MethodDefEntry>> methodsReferencing;
-        private Multimap<ClassEntry, EntryReference<ClassEntry, MethodDefEntry>> methodsReferencingClasses;
-        private Multimap<MethodEntry, MethodEntry> methodReferences;
-        private Multimap<FieldEntry, EntryReference<FieldEntry, MethodDefEntry>> fieldReferences;
-        private Multimap<ClassEntry, ClassEntry> innerClassesByOuter;
-        private Map<ClassEntry, ClassEntry> outerClassesByInner;
-        private Map<MethodEntry, MethodEntry> bridgedMethods;
-        private Set<MethodEntry> syntheticMethods;
-
-        public JarIndex(ReferencedEntryPool entryPool) {
-                this.entryPool = entryPool;
-                this.obfClassEntries = Sets.newHashSet();
-                this.translationIndex = new TranslationIndex(entryPool);
-                this.access = Maps.newHashMap();
-                this.fields = HashMultimap.create();
-                this.methods = HashMultimap.create();
-                this.methodImplementations = HashMultimap.create();
-                this.methodsReferencingClasses = HashMultimap.create();
-                this.methodsReferencing = HashMultimap.create();
-                this.methodReferences = HashMultimap.create();
-                this.fieldReferences = HashMultimap.create();
-                this.innerClassesByOuter = HashMultimap.create();
-                this.outerClassesByInner = Maps.newHashMap();
-                this.bridgedMethods = Maps.newHashMap();
-                this.syntheticMethods = Sets.newHashSet();
-        }
-
-        public void indexJar(ParsedJar jar, boolean buildInnerClasses) {
-
-                // step 1: read the class names
-                obfClassEntries.addAll(jar.getClassEntries());
-
-                // step 2: index classes, fields, methods, interfaces
-                if (buildInnerClasses) {
-                        // + step 5: index inner classes
-                        jar.visitReader(name -> new IndexClassVisitor(this, Opcodes.ASM5, new IndexInnerClassVisitor(this, Opcodes.ASM5)), ClassReader.SKIP_CODE);
-                } else {
-                        jar.visitReader(name -> new IndexClassVisitor(this, Opcodes.ASM5), ClassReader.SKIP_CODE);
-                }
-
-                // step 3: index field, method, constructor references
-                jar.visitReader(name -> new IndexReferenceVisitor(this, Opcodes.ASM5), ClassReader.SKIP_FRAMES);
-
-                // step 4: index access and bridged methods
-                for (MethodDefEntry methodEntry : methods.values()) {
-                        // look for access and bridged methods
-                        MethodEntry accessedMethod = findAccessMethod(methodEntry);
-                        if (accessedMethod != null) {
-                                if (isBridgedMethod(accessedMethod, methodEntry)) {
-                                        this.bridgedMethods.put(methodEntry, accessedMethod);
-                                }
-                        }
-                }
-
-                if (buildInnerClasses) {
-                        // step 6: update other indices with inner class info
-                        Map<String, String> renames = Maps.newHashMap();
-                        for (ClassEntry innerClassEntry : this.innerClassesByOuter.values()) {
-                                String newName = innerClassEntry.buildClassEntry(getObfClassChain(innerClassEntry)).getName();
-                                if (!innerClassEntry.getName().equals(newName)) {
-                                        // DEBUG
-                                        //System.out.println("REPLACE: " + innerClassEntry.getName() + " WITH " + newName);
-                                        renames.put(innerClassEntry.getName(), newName);
-                                }
-                        }
-                        EntryRenamer.renameClassesInSet(renames, this.obfClassEntries);
-                        this.translationIndex.renameClasses(renames);
-                        EntryRenamer.renameClassesInMultimap(renames, this.methodImplementations);
-                        EntryRenamer.renameClassesInMultimap(renames, this.methodsReferencingClasses);
-                        EntryRenamer.renameClassesInMultimap(renames, this.methodsReferencing);
-                        EntryRenamer.renameClassesInMultimap(renames, this.methodReferences);
-                        EntryRenamer.renameClassesInMultimap(renames, this.fieldReferences);
-                        EntryRenamer.renameClassesInMap(renames, this.access);
-                }
-        }
-
-        protected ClassDefEntry indexClass(int access, String name, String signature, String superName, String[] interfaces) {
-                for (String interfaceName : interfaces) {
-                        if (name.equals(interfaceName)) {
-                                throw new IllegalArgumentException("Class cannot be its own interface! " + name);
-                        }
-                }
-                ClassDefEntry entry = this.translationIndex.indexClass(access, name, signature, superName, interfaces);
-                this.access.put(entry, entry.getAccess());
-                return entry;
-        }
-
-        protected void indexField(ClassDefEntry owner, int access, String name, String desc, String signature) {
-                FieldDefEntry fieldEntry = new FieldDefEntry(owner, name, new TypeDescriptor(desc), Signature.createTypedSignature(signature), new AccessFlags(access));
-                this.translationIndex.indexField(fieldEntry);
-                this.access.put(fieldEntry, fieldEntry.getAccess());
-                this.fields.put(fieldEntry.getOwnerClassEntry(), fieldEntry);
-        }
-
-        protected void indexMethod(ClassDefEntry owner, int access, String name, String desc, String signature) {
-                MethodDefEntry methodEntry = new MethodDefEntry(owner, name, new MethodDescriptor(desc), Signature.createSignature(signature), new AccessFlags(access));
-                this.translationIndex.indexMethod(methodEntry);
-                this.access.put(methodEntry, methodEntry.getAccess());
-                this.methods.put(methodEntry.getOwnerClassEntry(), methodEntry);
-
-                if (new AccessFlags(access).isSynthetic()) {
-                        syntheticMethods.add(methodEntry);
-                }
-
-                // we don't care about constructors here
-                if (!methodEntry.isConstructor()) {
-                        // index implementation
-                        this.methodImplementations.put(methodEntry.getClassName(), methodEntry);
-                }
-        }
-
-        protected void indexMethodCall(MethodDefEntry callerEntry, String owner, String name, String desc) {
-                ClassEntry referencedClass = entryPool.getClass(owner);
-                MethodEntry referencedMethod = new MethodEntry(referencedClass, name, new MethodDescriptor(desc));
-                ClassEntry resolvedClassEntry = translationIndex.resolveEntryOwner(referencedMethod);
-                if (resolvedClassEntry != null && !resolvedClassEntry.equals(referencedMethod.getOwnerClassEntry())) {
-                        referencedMethod = referencedMethod.updateOwnership(resolvedClassEntry);
-                }
-                methodsReferencing.put(referencedMethod, new EntryReference<>(referencedMethod, referencedMethod.getName(), callerEntry));
-                if (referencedMethod.isConstructor()) {
-                        methodsReferencingClasses.put(referencedClass, new EntryReference<>(referencedClass, referencedMethod.getName(), callerEntry));
-                }
-                methodReferences.put(callerEntry, referencedMethod);
-        }
-
-        protected void indexFieldAccess(MethodDefEntry callerEntry, String owner, String name, String desc) {
-                FieldEntry referencedField = new FieldEntry(entryPool.getClass(owner), name, new TypeDescriptor(desc));
-                ClassEntry resolvedClassEntry = translationIndex.resolveEntryOwner(referencedField);
-                if (resolvedClassEntry != null && !resolvedClassEntry.equals(referencedField.getOwnerClassEntry())) {
-                        referencedField = referencedField.updateOwnership(resolvedClassEntry);
-                }
-                fieldReferences.put(referencedField, new EntryReference<>(referencedField, referencedField.getName(), callerEntry));
-        }
-
-        public void indexInnerClass(ClassEntry innerEntry, ClassEntry outerEntry) {
-                this.innerClassesByOuter.put(outerEntry, innerEntry);
-                this.outerClassesByInner.putIfAbsent(innerEntry, outerEntry);
-        }
-
-        private MethodEntry findAccessMethod(MethodDefEntry method) {
-
-                // we want to find all compiler-added methods that directly call another with no processing
-
-                // skip non-synthetic methods
-                if (!method.getAccess().isSynthetic()) {
-                        return null;
-                }
-
-                // get all the methods that we call
-                final Collection<MethodEntry> referencedMethods = methodReferences.get(method);
-
-                // is there just one?
-                if (referencedMethods.size() != 1) {
-                        return null;
-                }
-
-                return referencedMethods.stream().findFirst().orElse(null);
-        }
-
-        private boolean isBridgedMethod(MethodEntry called, MethodEntry access) {
-                // Bridged methods will always have the same name as the method they are calling
-                // They will also have the same amount of parameters (though equal descriptors cannot be guaranteed)
-                if (!called.getName().equals(access.getName()) || called.getDesc().getArgumentDescs().size() != access.getDesc().getArgumentDescs().size()) {
-                        return false;
-                }
-
-                TypeDescriptor accessReturn = access.getDesc().getReturnDesc();
-                TypeDescriptor calledReturn = called.getDesc().getReturnDesc();
-                if (calledReturn.isVoid() || calledReturn.isPrimitive() || accessReturn.isVoid() || accessReturn.isPrimitive()) {
-                        return false;
-                }
-
-                // Bridged methods will never have the same type as what they are calling
-                if (accessReturn.equals(calledReturn)) {
-                        return false;
-                }
-
-                String accessType = accessReturn.toString();
-
-                // If we're casting down from generic type to type-erased Object we're a bridge method
-                if (accessType.equals("Ljava/lang/Object;")) {
-                        return true;
-                }
-
-                // Now we need to detect cases where we are being casted down to a higher type bound
-                List<ClassEntry> calledAncestry = translationIndex.getAncestry(calledReturn.getTypeEntry());
-                return calledAncestry.contains(accessReturn.getTypeEntry());
-        }
-
-        public Set<ClassEntry> getObfClassEntries() {
-                return this.obfClassEntries;
-        }
-
-        public Collection<FieldDefEntry> getObfFieldEntries() {
-                return this.fields.values();
-        }
-
-        public Collection<FieldDefEntry> getObfFieldEntries(ClassEntry classEntry) {
-                return this.fields.get(classEntry);
-        }
-
-        public Collection<MethodDefEntry> getObfBehaviorEntries() {
-                return this.methods.values();
-        }
-
-        public Collection<MethodDefEntry> getObfBehaviorEntries(ClassEntry classEntry) {
-                return this.methods.get(classEntry);
-        }
-
-        public TranslationIndex getTranslationIndex() {
-                return this.translationIndex;
-        }
-
-        @Deprecated
-        public Access getAccess(Entry entry) {
-                AccessFlags flags = getAccessFlags(entry);
-                return flags != null ? Access.get(flags) : null;
-        }
-
-        public AccessFlags getAccessFlags(Entry entry) {
-                return this.access.get(entry);
-        }
-
-        public ClassInheritanceTreeNode getClassInheritance(Translator deobfuscatingTranslator, ClassEntry obfClassEntry) {
-
-                // get the root node
-                List<String> ancestry = Lists.newArrayList();
-                ancestry.add(obfClassEntry.getName());
-                for (ClassEntry classEntry : this.translationIndex.getAncestry(obfClassEntry)) {
-                        if (containsObfClass(classEntry)) {
-                                ancestry.add(classEntry.getName());
-                        }
-                }
-                ClassInheritanceTreeNode rootNode = new ClassInheritanceTreeNode(
-                                deobfuscatingTranslator,
-                                ancestry.get(ancestry.size() - 1)
-                );
-
-                // expand all children recursively
-                rootNode.load(this.translationIndex, true);
-
-                return rootNode;
-        }
-
-        public ClassImplementationsTreeNode getClassImplementations(Translator deobfuscatingTranslator, ClassEntry obfClassEntry) {
-
-                // is this even an interface?
-                if (isInterface(obfClassEntry.getClassName())) {
-                        ClassImplementationsTreeNode node = new ClassImplementationsTreeNode(deobfuscatingTranslator, obfClassEntry);
-                        node.load(this);
-                        return node;
-                }
-                return null;
-        }
-
-        public MethodInheritanceTreeNode getMethodInheritance(Translator deobfuscatingTranslator, MethodEntry obfMethodEntry) {
-                // travel to the ancestor implementation
-                LinkedList<ClassEntry> entries = new LinkedList<>();
-                entries.add(obfMethodEntry.getOwnerClassEntry());
-
-                // TODO: This could be optimized to not go through interfaces repeatedly...
-
-                ClassEntry baseImplementationClassEntry = obfMethodEntry.getOwnerClassEntry();
-
-                for (ClassEntry itf : getInterfaces(obfMethodEntry.getOwnerClassEntry().getClassName())) {
-                        MethodEntry itfMethodEntry = entryPool.getMethod(itf, obfMethodEntry.getName(), obfMethodEntry.getDesc().toString());
-                        if (itfMethodEntry != null && containsObfMethod(itfMethodEntry)) {
-                                baseImplementationClassEntry = itf;
-                        }
-                }
-
-                for (ClassEntry ancestorClassEntry : this.translationIndex.getAncestry(entries.remove())) {
-                        MethodEntry ancestorMethodEntry = entryPool.getMethod(ancestorClassEntry, obfMethodEntry.getName(), obfMethodEntry.getDesc().toString());
-                        if (ancestorMethodEntry != null) {
-                                if (containsObfMethod(ancestorMethodEntry)) {
-                                        baseImplementationClassEntry = ancestorClassEntry;
-                                }
-
-                                for (ClassEntry itf : getInterfaces(ancestorClassEntry.getClassName())) {
-                                        MethodEntry itfMethodEntry = entryPool.getMethod(itf, obfMethodEntry.getName(), obfMethodEntry.getDesc().toString());
-                                        if (itfMethodEntry != null && containsObfMethod(itfMethodEntry)) {
-                                                baseImplementationClassEntry = itf;
-                                        }
-                                }
-                        }
-                }
-
-                // make a root node at the base
-                MethodEntry methodEntry = entryPool.getMethod(baseImplementationClassEntry, obfMethodEntry.getName(), obfMethodEntry.getDesc().toString());
-                MethodInheritanceTreeNode rootNode = new MethodInheritanceTreeNode(
-                                deobfuscatingTranslator,
-                                methodEntry,
-                                containsObfMethod(methodEntry)
-                );
-
-                // expand the full tree
-                rootNode.load(this, true);
-
-                return rootNode;
-        }
-
-        public List<MethodImplementationsTreeNode> getMethodImplementations(Translator deobfuscatingTranslator, MethodEntry obfMethodEntry) {
-
-                List<MethodEntry> interfaceMethodEntries = Lists.newArrayList();
-
-                // is this method on an interface?
-                if (isInterface(obfMethodEntry.getClassName())) {
-                        interfaceMethodEntries.add(obfMethodEntry);
-                } else {
-                        // get the interface class
-                        for (ClassEntry interfaceEntry : getInterfaces(obfMethodEntry.getClassName())) {
-
-                                // is this method defined in this interface?
-                                MethodEntry methodInterface = entryPool.getMethod(interfaceEntry, obfMethodEntry.getName(), obfMethodEntry.getDesc().toString());
-                                if (methodInterface != null && containsObfMethod(methodInterface)) {
-                                        interfaceMethodEntries.add(methodInterface);
-                                }
-                        }
-                }
-
-                List<MethodImplementationsTreeNode> nodes = Lists.newArrayList();
-                if (!interfaceMethodEntries.isEmpty()) {
-                        for (MethodEntry interfaceMethodEntry : interfaceMethodEntries) {
-                                MethodImplementationsTreeNode node = new MethodImplementationsTreeNode(deobfuscatingTranslator, interfaceMethodEntry);
-                                node.load(this);
-                                nodes.add(node);
-                        }
-                }
-                return nodes;
-        }
-
-        public Set<MethodEntry> getRelatedMethodImplementations(MethodEntry obfMethodEntry) {
-                AccessFlags flags = getAccessFlags(obfMethodEntry);
-                if (flags.isPrivate() || flags.isStatic()) {
-                        return Collections.singleton(obfMethodEntry);
-                }
-
-                Set<MethodEntry> methodEntries = Sets.newHashSet();
-                getRelatedMethodImplementations(methodEntries, getMethodInheritance(new DirectionalTranslator(entryPool), obfMethodEntry));
-                return methodEntries;
-        }
-
-        private void getRelatedMethodImplementations(Set<MethodEntry> methodEntries, MethodInheritanceTreeNode node) {
-                MethodEntry methodEntry = node.getMethodEntry();
-                if (methodEntries.contains(methodEntry)) {
-                        return;
-                }
-
-                if (containsObfMethod(methodEntry)) {
-                        AccessFlags flags = getAccessFlags(methodEntry);
-                        if (!flags.isPrivate() && !flags.isStatic()) {
-                                // collect the entry
-                                methodEntries.add(methodEntry);
-                        }
-                }
-
-                // look at bridge methods!
-                MethodEntry bridgedMethod = getBridgedMethod(methodEntry);
-                while (bridgedMethod != null) {
-                        methodEntries.addAll(getRelatedMethodImplementations(bridgedMethod));
-                        bridgedMethod = getBridgedMethod(bridgedMethod);
-                }
-
-                // look at interface methods too
-                for (MethodImplementationsTreeNode implementationsNode : getMethodImplementations(new DirectionalTranslator(entryPool), methodEntry)) {
-                        getRelatedMethodImplementations(methodEntries, implementationsNode);
-                }
-
-                // recurse
-                for (int i = 0; i < node.getChildCount(); i++) {
-                        getRelatedMethodImplementations(methodEntries, (MethodInheritanceTreeNode) node.getChildAt(i));
-                }
-        }
-
-        private void getRelatedMethodImplementations(Set<MethodEntry> methodEntries, MethodImplementationsTreeNode node) {
-                MethodEntry methodEntry = node.getMethodEntry();
-                if (containsObfMethod(methodEntry)) {
-                        AccessFlags flags = getAccessFlags(methodEntry);
-                        if (!flags.isPrivate() && !flags.isStatic()) {
-                                // collect the entry
-                                methodEntries.add(methodEntry);
-                        }
-                }
-
-                // look at bridge methods!
-                MethodEntry bridgedMethod = getBridgedMethod(methodEntry);
-                while (bridgedMethod != null) {
-                        methodEntries.addAll(getRelatedMethodImplementations(bridgedMethod));
-                        bridgedMethod = getBridgedMethod(bridgedMethod);
-                }
-
-                // recurse
-                for (int i = 0; i < node.getChildCount(); i++) {
-                        getRelatedMethodImplementations(methodEntries, (MethodImplementationsTreeNode) node.getChildAt(i));
-                }
-        }
-
-        public Collection<EntryReference<FieldEntry, MethodDefEntry>> getFieldReferences(FieldEntry fieldEntry) {
-                return this.fieldReferences.get(fieldEntry);
-        }
-
-        public Collection<FieldEntry> getReferencedFields(MethodDefEntry methodEntry) {
-                // linear search is fast enough for now
-                Set<FieldEntry> fieldEntries = Sets.newHashSet();
-                for (EntryReference<FieldEntry, MethodDefEntry> reference : this.fieldReferences.values()) {
-                        if (reference.context == methodEntry) {
-                                fieldEntries.add(reference.entry);
-                        }
-                }
-                return fieldEntries;
-        }
-
-        public Collection<EntryReference<ClassEntry, MethodDefEntry>> getMethodsReferencing(ClassEntry classEntry) {
-                return this.methodsReferencingClasses.get(classEntry);
-        }
-
-        @Deprecated
-        public Collection<EntryReference<MethodEntry, MethodDefEntry>> getMethodsReferencing(MethodEntry methodEntry) {
-                return getMethodsReferencing(methodEntry, false);
-        }
-
-        public Collection<EntryReference<MethodEntry, MethodDefEntry>> getMethodsReferencing(MethodEntry methodEntry, boolean recurse) {
-                if (!recurse) {
-                        return this.methodsReferencing.get(methodEntry);
-                }
-
-                List<EntryReference<MethodEntry, MethodDefEntry>> references = new ArrayList<>();
-                Set<MethodEntry> methodEntries = getRelatedMethodImplementations(methodEntry);
-                for (MethodEntry entry : methodEntries) {
-                        references.addAll(getMethodsReferencing(entry, false));
-                }
-                return references;
-        }
-
-        public Collection<MethodEntry> getReferencedMethods(MethodDefEntry methodEntry) {
-                return this.methodReferences.get(methodEntry);
-        }
-
-        public Collection<ClassEntry> getInnerClasses(ClassEntry obfOuterClassEntry) {
-                return this.innerClassesByOuter.get(obfOuterClassEntry);
-        }
-
-        public ClassEntry getOuterClass(ClassEntry obfInnerClassEntry) {
-                return this.outerClassesByInner.get(obfInnerClassEntry);
-        }
-
-        public boolean isSyntheticMethod(MethodEntry methodEntry) {
-                return this.syntheticMethods.contains(methodEntry);
-        }
-
-        public Set<ClassEntry> getInterfaces(String className) {
-                ClassEntry classEntry = entryPool.getClass(className);
-                Set<ClassEntry> interfaces = new HashSet<>(this.translationIndex.getInterfaces(classEntry));
-                for (ClassEntry ancestor : this.translationIndex.getAncestry(classEntry)) {
-                        interfaces.addAll(this.translationIndex.getInterfaces(ancestor));
-                }
-                return interfaces;
-        }
-
-        public Set<String> getImplementingClasses(String targetInterfaceName) {
-
-                // linear search is fast enough for now
-                Set<String> classNames = Sets.newHashSet();
-                for (Map.Entry<ClassEntry, ClassEntry> entry : this.translationIndex.getClassInterfaces()) {
-                        ClassEntry classEntry = entry.getKey();
-                        ClassEntry interfaceEntry = entry.getValue();
-                        if (interfaceEntry.getName().equals(targetInterfaceName)) {
-                                String className = classEntry.getClassName();
-                                classNames.add(className);
-                                if (isInterface(className)) {
-                                        classNames.addAll(getImplementingClasses(className));
-                                }
-
-                                this.translationIndex.getSubclassNamesRecursively(classNames, classEntry);
-                        }
-                }
-                return classNames;
-        }
-
-        public boolean isInterface(String className) {
-                return this.translationIndex.isInterface(entryPool.getClass(className));
-        }
-
-        public boolean containsObfClass(ClassEntry obfClassEntry) {
-                return this.obfClassEntries.contains(obfClassEntry);
-        }
-
-        public boolean containsObfField(FieldEntry obfFieldEntry) {
-                return this.access.containsKey(obfFieldEntry);
-        }
-
-        public boolean containsObfMethod(MethodEntry obfMethodEntry) {
-                return this.access.containsKey(obfMethodEntry);
-        }
-
-        public boolean containsEntryWithSameName(Entry entry) {
-                for (Entry target : this.access.keySet())
-                        if (target.getName().equals(entry.getName()) && entry.getClass().isInstance(target.getClass()))
-                                return true;
-                return false;
-        }
-
-        public boolean containsObfVariable(LocalVariableEntry obfVariableEntry) {
-                // check the behavior
-                if (!containsObfMethod(obfVariableEntry.getOwnerEntry())) {
-                        return false;
-                }
-
-                return true;
-        }
-
-        public boolean containsObfEntry(Entry obfEntry) {
-                if (obfEntry instanceof ClassEntry) {
-                        return containsObfClass((ClassEntry) obfEntry);
-                } else if (obfEntry instanceof FieldEntry) {
-                        return containsObfField((FieldEntry) obfEntry);
-                } else if (obfEntry instanceof MethodEntry) {
-                        return containsObfMethod((MethodEntry) obfEntry);
-                } else if (obfEntry instanceof LocalVariableEntry) {
-                        return containsObfVariable((LocalVariableEntry) obfEntry);
-                } else {
-                        throw new Error("Entry desc not supported: " + obfEntry.getClass().getName());
-                }
-        }
-
-        public MethodEntry getBridgedMethod(MethodEntry bridgeMethodEntry) {
-                return this.bridgedMethods.get(bridgeMethodEntry);
-        }
-
-        public List<ClassEntry> getObfClassChain(ClassEntry obfClassEntry) {
-
-                // build class chain in inner-to-outer order
-                List<ClassEntry> obfClassChain = Lists.newArrayList(obfClassEntry);
-                ClassEntry checkClassEntry = obfClassEntry;
-                while (true) {
-                        ClassEntry obfOuterClassEntry = getOuterClass(checkClassEntry);
-                        if (obfOuterClassEntry != null) {
-                                obfClassChain.add(obfOuterClassEntry);
-                                checkClassEntry = obfOuterClassEntry;
-                        } else {
-                                break;
-                        }
-                }
-
-                // switch to outer-to-inner order
-                Collections.reverse(obfClassChain);
-
-                return obfClassChain;
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/analysis/MethodImplementationsTreeNode.java b/src/main/java/cuchaz/enigma/analysis/MethodImplementationsTreeNode.java
index 4b47c5f..e4b0304 100644
--- a/src/main/java/cuchaz/enigma/analysis/MethodImplementationsTreeNode.java
+++ b/src/main/java/cuchaz/enigma/analysis/MethodImplementationsTreeNode.java
@@ -12,24 +12,28 @@
 package cuchaz.enigma.analysis;
 
 import com.google.common.collect.Lists;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.MethodEntry;
-import cuchaz.enigma.mapping.Translator;
+import cuchaz.enigma.analysis.index.EntryIndex;
+import cuchaz.enigma.analysis.index.InheritanceIndex;
+import cuchaz.enigma.analysis.index.JarIndex;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
 
 import javax.swing.tree.DefaultMutableTreeNode;
+import java.util.Collection;
 import java.util.List;
 
 public class MethodImplementationsTreeNode extends DefaultMutableTreeNode {
 
-        private Translator deobfuscatingTranslator;
+        private final Translator translator;
         private MethodEntry entry;
 
-        public MethodImplementationsTreeNode(Translator deobfuscatingTranslator, MethodEntry entry) {
+        public MethodImplementationsTreeNode(Translator translator, MethodEntry entry) {
+                this.translator = translator;
                 if (entry == null) {
                         throw new IllegalArgumentException("Entry cannot be null!");
                 }
 
-                this.deobfuscatingTranslator = deobfuscatingTranslator;
                 this.entry = entry;
         }
 
@@ -53,35 +57,25 @@ public class MethodImplementationsTreeNode extends DefaultMutableTreeNode {
                 return this.entry;
         }
 
-        public String getDeobfClassName() {
-                return this.deobfuscatingTranslator.getTranslatedClass(this.entry.getOwnerClassEntry()).getClassName();
-        }
-
-        public String getDeobfMethodName() {
-                return this.deobfuscatingTranslator.getTranslatedMethod(this.entry).getName();
-        }
-
         @Override
         public String toString() {
-                String className = getDeobfClassName();
-                if (className == null) {
-                        className = this.entry.getClassName();
-                }
-
-                String methodName = getDeobfMethodName();
-                if (methodName == null) {
-                        methodName = this.entry.getName();
-                }
+                MethodEntry translatedEntry = translator.translate(entry);
+                String className = translatedEntry.getParent().getFullName();
+                String methodName = translatedEntry.getName();
                 return className + "." + methodName + "()";
         }
 
         public void load(JarIndex index) {
                 // get all method implementations
                 List<MethodImplementationsTreeNode> nodes = Lists.newArrayList();
-                for (String implementingClassName : index.getImplementingClasses(this.entry.getClassName())) {
-                        MethodEntry methodEntry = new MethodEntry(new ClassEntry(implementingClassName), this.entry.getName(), this.entry.getDesc());
-                        if (index.containsObfMethod(methodEntry)) {
-                                nodes.add(new MethodImplementationsTreeNode(this.deobfuscatingTranslator, methodEntry));
+                EntryIndex entryIndex = index.getEntryIndex();
+                InheritanceIndex inheritanceIndex = index.getInheritanceIndex();
+
+                Collection<ClassEntry> inheritors = inheritanceIndex.getChildren(entry.getParent());
+                for (ClassEntry inheritor : inheritors) {
+                        MethodEntry methodEntry = entry.withParent(inheritor);
+                        if (entryIndex.hasMethod(methodEntry)) {
+                                nodes.add(new MethodImplementationsTreeNode(translator, methodEntry));
                         }
                 }
 
diff --git a/src/main/java/cuchaz/enigma/analysis/MethodInheritanceTreeNode.java b/src/main/java/cuchaz/enigma/analysis/MethodInheritanceTreeNode.java
index dc34197..f0fd1d2 100644
--- a/src/main/java/cuchaz/enigma/analysis/MethodInheritanceTreeNode.java
+++ b/src/main/java/cuchaz/enigma/analysis/MethodInheritanceTreeNode.java
@@ -12,21 +12,24 @@
 package cuchaz.enigma.analysis;
 
 import com.google.common.collect.Lists;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.MethodEntry;
-import cuchaz.enigma.mapping.Translator;
+import cuchaz.enigma.analysis.index.EntryIndex;
+import cuchaz.enigma.analysis.index.InheritanceIndex;
+import cuchaz.enigma.analysis.index.JarIndex;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
 
 import javax.swing.tree.DefaultMutableTreeNode;
 import java.util.List;
 
 public class MethodInheritanceTreeNode extends DefaultMutableTreeNode {
 
-        private Translator deobfuscatingTranslator;
+        private final Translator translator;
         private MethodEntry entry;
         private boolean isImplemented;
 
-        public MethodInheritanceTreeNode(Translator deobfuscatingTranslator, MethodEntry entry, boolean isImplemented) {
-                this.deobfuscatingTranslator = deobfuscatingTranslator;
+        public MethodInheritanceTreeNode(Translator translator, MethodEntry entry, boolean isImplemented) {
+                this.translator = translator;
                 this.entry = entry;
                 this.isImplemented = isImplemented;
         }
@@ -51,32 +54,19 @@ public class MethodInheritanceTreeNode extends DefaultMutableTreeNode {
                 return this.entry;
         }
 
-        public String getDeobfClassName() {
-                return this.deobfuscatingTranslator.getTranslatedClass(this.entry.getOwnerClassEntry()).getName();
-        }
-
-        public String getDeobfMethodName() {
-                return this.deobfuscatingTranslator.getTranslatedMethod(this.entry).getName();
-        }
-
         public boolean isImplemented() {
                 return this.isImplemented;
         }
 
         @Override
         public String toString() {
-                String className = getDeobfClassName();
-                if (className == null) {
-                        className = this.entry.getClassName();
-                }
+                MethodEntry translatedEntry = translator.translate(entry);
+                String className = translatedEntry.getContainingClass().getFullName();
 
                 if (!this.isImplemented) {
                         return className;
                 } else {
-                        String methodName = getDeobfMethodName();
-                        if (methodName == null) {
-                                methodName = this.entry.getName();
-                        }
+                        String methodName = translatedEntry.getName();
                         return className + "." + methodName + "()";
                 }
         }
@@ -84,14 +74,12 @@ public class MethodInheritanceTreeNode extends DefaultMutableTreeNode {
         public void load(JarIndex index, boolean recurse) {
                 // get all the child nodes
                 List<MethodInheritanceTreeNode> nodes = Lists.newArrayList();
-                for (ClassEntry subclassEntry : index.getTranslationIndex().getSubclass(this.entry.getOwnerClassEntry())) {
-                        MethodEntry methodEntry = new MethodEntry(subclassEntry, this.entry.getName(), this.entry.getDesc());
-                        nodes.add(new MethodInheritanceTreeNode(this.deobfuscatingTranslator, methodEntry, index.containsObfMethod(methodEntry)));
-                }
+                EntryIndex entryIndex = index.getEntryIndex();
+                InheritanceIndex inheritanceIndex = index.getInheritanceIndex();
 
-                for (ClassEntry subclassEntry : index.getTranslationIndex().getImplementers(this.entry.getOwnerClassEntry())) {
-                        MethodEntry methodEntry = new MethodEntry(subclassEntry, this.entry.getName(), this.entry.getDesc());
-                        nodes.add(new MethodInheritanceTreeNode(this.deobfuscatingTranslator, methodEntry, index.containsObfMethod(methodEntry)));
+                for (ClassEntry inheritorEntry : inheritanceIndex.getChildren(this.entry.getParent())) {
+                        MethodEntry methodEntry = new MethodEntry(inheritorEntry, this.entry.getName(), this.entry.getDesc());
+                        nodes.add(new MethodInheritanceTreeNode(translator, methodEntry, entryIndex.hasMethod(methodEntry)));
                 }
 
                 // add them to this node
diff --git a/src/main/java/cuchaz/enigma/analysis/MethodReferenceTreeNode.java b/src/main/java/cuchaz/enigma/analysis/MethodReferenceTreeNode.java
index ac05acd..8995eb5 100644
--- a/src/main/java/cuchaz/enigma/analysis/MethodReferenceTreeNode.java
+++ b/src/main/java/cuchaz/enigma/analysis/MethodReferenceTreeNode.java
@@ -12,36 +12,36 @@
 package cuchaz.enigma.analysis;
 
 import com.google.common.collect.Sets;
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.*;
-import cuchaz.enigma.mapping.entry.Entry;
-import cuchaz.enigma.mapping.entry.MethodDefEntry;
-import cuchaz.enigma.mapping.entry.MethodEntry;
+import cuchaz.enigma.analysis.index.JarIndex;
+import cuchaz.enigma.analysis.index.ReferenceIndex;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryResolver;
+import cuchaz.enigma.translation.representation.entry.Entry;
+import cuchaz.enigma.translation.representation.entry.MethodDefEntry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
 
 import javax.swing.tree.DefaultMutableTreeNode;
 import javax.swing.tree.TreeNode;
+import java.util.ArrayList;
+import java.util.Collection;
 import java.util.Set;
 
-public class MethodReferenceTreeNode extends DefaultMutableTreeNode
-        implements ReferenceTreeNode<MethodEntry, MethodDefEntry> {
+public class MethodReferenceTreeNode extends DefaultMutableTreeNode implements ReferenceTreeNode<MethodEntry, MethodDefEntry> {
 
-        private Translator deobfuscatingTranslator;
+        private final Translator translator;
         private MethodEntry entry;
         private EntryReference<MethodEntry, MethodDefEntry> reference;
-        private AccessFlags access;
 
-        public MethodReferenceTreeNode(Translator deobfuscatingTranslator, MethodEntry entry) {
-                this.deobfuscatingTranslator = deobfuscatingTranslator;
+        public MethodReferenceTreeNode(Translator translator, MethodEntry entry) {
+                this.translator = translator;
                 this.entry = entry;
                 this.reference = null;
         }
 
-        public MethodReferenceTreeNode(Translator deobfuscatingTranslator,
-                                                                   EntryReference<MethodEntry, MethodDefEntry> reference, AccessFlags access) {
-                this.deobfuscatingTranslator = deobfuscatingTranslator;
+        public MethodReferenceTreeNode(Translator translator, EntryReference<MethodEntry, MethodDefEntry> reference) {
+                this.translator = translator;
                 this.entry = reference.entry;
                 this.reference = reference;
-                this.access = access;
         }
 
         @Override
@@ -57,21 +57,17 @@ public class MethodReferenceTreeNode extends DefaultMutableTreeNode
         @Override
         public String toString() {
                 if (this.reference != null) {
-                        return String.format("%s (%s)", this.deobfuscatingTranslator.getTranslatedMethodDef(this.reference.context),
-                                this.access);
+                        return String.format("%s", translator.translate(this.reference.context));
                 }
-                return this.deobfuscatingTranslator.getTranslatedMethod(this.entry).getName();
-        }
-
-        @Deprecated
-        public void load(JarIndex index, boolean recurse) {
-                load(index, recurse, false);
+                return translator.translate(this.entry).getName();
         }
 
         public void load(JarIndex index, boolean recurse, boolean recurseMethod) {
                 // get all the child nodes
-                for (EntryReference<MethodEntry, MethodDefEntry> reference : index.getMethodsReferencing(this.entry, recurseMethod)) {
-                        add(new MethodReferenceTreeNode(this.deobfuscatingTranslator, reference, index.getAccessFlags(this.entry)));
+                Collection<EntryReference<MethodEntry, MethodDefEntry>> references = getReferences(index, recurseMethod);
+
+                for (EntryReference<MethodEntry, MethodDefEntry> reference : references) {
+                        add(new MethodReferenceTreeNode(translator, reference));
                 }
 
                 if (recurse && this.children != null) {
@@ -80,7 +76,7 @@ public class MethodReferenceTreeNode extends DefaultMutableTreeNode
                                         MethodReferenceTreeNode node = (MethodReferenceTreeNode) child;
 
                                         // don't recurse into ancestor
-                                        Set<Entry> ancestors = Sets.newHashSet();
+                                        Set<Entry<?>> ancestors = Sets.newHashSet();
                                         TreeNode n = node;
                                         while (n.getParent() != null) {
                                                 n = n.getParent();
@@ -92,9 +88,26 @@ public class MethodReferenceTreeNode extends DefaultMutableTreeNode
                                                 continue;
                                         }
 
-                                        node.load(index, true);
+                                        node.load(index, true, false);
                                 }
                         }
                 }
         }
+
+        private Collection<EntryReference<MethodEntry, MethodDefEntry>> getReferences(JarIndex index, boolean recurseMethod) {
+                ReferenceIndex referenceIndex = index.getReferenceIndex();
+
+                if (recurseMethod) {
+                        Collection<EntryReference<MethodEntry, MethodDefEntry>> references = new ArrayList<>();
+
+                        EntryResolver entryResolver = index.getEntryResolver();
+                        for (MethodEntry methodEntry : entryResolver.resolveEquivalentMethods(entry)) {
+                                references.addAll(referenceIndex.getReferencesToMethod(methodEntry));
+                        }
+
+                        return references;
+                } else {
+                        return referenceIndex.getReferencesToMethod(entry);
+                }
+        }
 }
diff --git a/src/main/java/cuchaz/enigma/analysis/ParsedJar.java b/src/main/java/cuchaz/enigma/analysis/ParsedJar.java
index 86655d0..ad3aceb 100644
--- a/src/main/java/cuchaz/enigma/analysis/ParsedJar.java
+++ b/src/main/java/cuchaz/enigma/analysis/ParsedJar.java
@@ -12,11 +12,12 @@
 package cuchaz.enigma.analysis;
 
 import com.google.common.io.ByteStreams;
-import cuchaz.enigma.mapping.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
 import org.objectweb.asm.ClassReader;
 import org.objectweb.asm.ClassVisitor;
 import org.objectweb.asm.tree.ClassNode;
 
+import javax.annotation.Nullable;
 import java.io.BufferedInputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -100,9 +101,14 @@ public class ParsedJar {
                 return entries;
         }
 
+        @Nullable
         public ClassNode getClassNode(String name) {
                 return nodeCache.computeIfAbsent(name, (n) -> {
-                        ClassReader reader = new ClassReader(classBytes.get(name));
+                        byte[] bytes = classBytes.get(name);
+                        if (bytes == null) {
+                                return null;
+                        }
+                        ClassReader reader = new ClassReader(bytes);
                         ClassNode node = new ClassNode();
                         reader.accept(node, 0);
                         return node;
diff --git a/src/main/java/cuchaz/enigma/analysis/ReferenceTreeNode.java b/src/main/java/cuchaz/enigma/analysis/ReferenceTreeNode.java
index 3950d16..c0a3a75 100644
--- a/src/main/java/cuchaz/enigma/analysis/ReferenceTreeNode.java
+++ b/src/main/java/cuchaz/enigma/analysis/ReferenceTreeNode.java
@@ -11,9 +11,9 @@
 
 package cuchaz.enigma.analysis;
 
-import cuchaz.enigma.mapping.entry.Entry;
+import cuchaz.enigma.translation.representation.entry.Entry;
 
-public interface ReferenceTreeNode<E extends Entry, C extends Entry> {
+public interface ReferenceTreeNode<E extends Entry<?>, C extends Entry<?>> {
         E getEntry();
 
         EntryReference<E, C> getReference();
diff --git a/src/main/java/cuchaz/enigma/analysis/SourceIndex.java b/src/main/java/cuchaz/enigma/analysis/SourceIndex.java
index 3e0d66b..abdec92 100644
--- a/src/main/java/cuchaz/enigma/analysis/SourceIndex.java
+++ b/src/main/java/cuchaz/enigma/analysis/SourceIndex.java
@@ -11,17 +11,15 @@
 
 package cuchaz.enigma.analysis;
 
-import com.google.common.collect.HashMultimap;
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
-import com.google.common.collect.Multimap;
+import com.google.common.collect.*;
 import com.strobel.decompiler.languages.Region;
 import com.strobel.decompiler.languages.java.ast.AstNode;
 import com.strobel.decompiler.languages.java.ast.ConstructorDeclaration;
 import com.strobel.decompiler.languages.java.ast.Identifier;
 import com.strobel.decompiler.languages.java.ast.TypeDeclaration;
-import cuchaz.enigma.mapping.entry.Entry;
+import cuchaz.enigma.translation.representation.entry.Entry;
 
+import javax.annotation.Nullable;
 import java.util.*;
 import java.util.regex.Pattern;
 
@@ -29,9 +27,9 @@ public class SourceIndex {
         private static Pattern ANONYMOUS_INNER = Pattern.compile("\\$\\d+$");
 
         private String source;
-        private TreeMap<Token, EntryReference<Entry, Entry>> tokenToReference;
-        private Multimap<EntryReference<Entry, Entry>, Token> referenceToTokens;
-        private Map<Entry, Token> declarationToToken;
+        private TreeMap<Token, EntryReference<Entry<?>, Entry<?>>> tokenToReference;
+        private Multimap<EntryReference<Entry<?>, Entry<?>>, Token> referenceToTokens;
+        private Map<Entry<?>, Token> declarationToToken;
         private List<Integer> lineOffsets;
         private boolean ignoreBadTokens;
 
@@ -42,7 +40,7 @@ public class SourceIndex {
         public SourceIndex(String source, boolean ignoreBadTokens) {
                 this.source = source;
                 this.ignoreBadTokens = ignoreBadTokens;
-                this.tokenToReference = Maps.newTreeMap();
+                this.tokenToReference = new TreeMap<>();
                 this.referenceToTokens = HashMultimap.create();
                 this.declarationToToken = Maps.newHashMap();
                 calculateLineOffsets();
@@ -63,12 +61,12 @@ public class SourceIndex {
                 this.source = source;
                 calculateLineOffsets();
 
-                for (Entry entry : Lists.newArrayList(declarationToToken.keySet())) {
+                for (Entry<?> entry : Lists.newArrayList(declarationToToken.keySet())) {
                         Token token = declarationToToken.get(entry);
                         declarationToToken.put(entry, tokenMap.getOrDefault(token, token));
                 }
 
-                for (EntryReference<Entry, Entry> ref : referenceToTokens.keySet()) {
+                for (EntryReference<Entry<?>, Entry<?>> ref : referenceToTokens.keySet()) {
                         Collection<Token> oldTokens = referenceToTokens.get(ref);
                         List<Token> newTokens = new ArrayList<>(oldTokens.size());
 
@@ -79,7 +77,8 @@ public class SourceIndex {
                         referenceToTokens.replaceValues(ref, newTokens);
                 }
 
-                Map<Token, EntryReference<Entry, Entry>> tokenToReferenceCopy = Maps.newHashMap(tokenToReference);
+                TreeMap<Token, EntryReference<Entry<?>, Entry<?>>> tokenToReferenceCopy = new TreeMap<>(tokenToReference);
+
                 tokenToReference.clear();
                 for (Token token : tokenToReferenceCopy.keySet()) {
                         tokenToReference.put(tokenMap.getOrDefault(token, token), tokenToReferenceCopy.get(token));
@@ -112,9 +111,9 @@ public class SourceIndex {
                         return null;
                 }
 
-                if (node instanceof Identifier && name.indexOf('$') >=0 && node.getParent() instanceof ConstructorDeclaration && name.lastIndexOf('$') >= 0 && !ANONYMOUS_INNER.matcher(name).matches()){
+                if (node instanceof Identifier && name.indexOf('$') >= 0 && node.getParent() instanceof ConstructorDeclaration && name.lastIndexOf('$') >= 0 && !ANONYMOUS_INNER.matcher(name).matches()) {
                         TypeDeclaration type = node.getParent().getParent() instanceof TypeDeclaration ? (TypeDeclaration) node.getParent().getParent() : null;
-                        if (type != null){
+                        if (type != null) {
                                 name = type.getName();
                                 token.end = token.start + name.length();
                         }
@@ -133,19 +132,19 @@ public class SourceIndex {
                 return token;
         }
 
-        public void addReference(AstNode node, Entry deobfEntry, Entry deobfContext) {
+        public void addReference(AstNode node, Entry<?> deobfEntry, Entry<?> deobfContext) {
                 Token token = getToken(node);
                 if (token != null) {
-                        EntryReference<Entry, Entry> deobfReference = new EntryReference<>(deobfEntry, token.text, deobfContext);
+                        EntryReference<Entry<?>, Entry<?>> deobfReference = new EntryReference<>(deobfEntry, token.text, deobfContext);
                         this.tokenToReference.put(token, deobfReference);
                         this.referenceToTokens.put(deobfReference, token);
                 }
         }
 
-        public void addDeclaration(AstNode node, Entry deobfEntry) {
+        public void addDeclaration(AstNode node, Entry<?> deobfEntry) {
                 Token token = getToken(node);
                 if (token != null) {
-                        EntryReference<Entry, Entry> reference = new EntryReference<>(deobfEntry, token.text);
+                        EntryReference<Entry<?>, Entry<?>> reference = new EntryReference<>(deobfEntry, token.text);
                         this.tokenToReference.put(token, reference);
                         this.referenceToTokens.put(reference, token);
                         this.declarationToToken.put(deobfEntry, token);
@@ -160,22 +159,22 @@ public class SourceIndex {
                 return null;
         }
 
-        public Collection<Token> getReferenceTokens(EntryReference<Entry, Entry> deobfReference) {
+        public Collection<Token> getReferenceTokens(EntryReference<Entry<?>, Entry<?>> deobfReference) {
                 return this.referenceToTokens.get(deobfReference);
         }
 
-        public EntryReference<Entry, Entry> getDeobfReference(Token token) {
+        @Nullable
+        public EntryReference<Entry<?>, Entry<?>> getDeobfReference(Token token) {
                 if (token == null) {
                         return null;
                 }
                 return this.tokenToReference.get(token);
         }
 
-        public void replaceDeobfReference(Token token, EntryReference<Entry, Entry> newDeobfReference) {
-                EntryReference<Entry, Entry> oldDeobfReference = this.tokenToReference.get(token);
-                this.tokenToReference.put(token, newDeobfReference);
-                Collection<Token> tokens = this.referenceToTokens.get(oldDeobfReference);
-                this.referenceToTokens.removeAll(oldDeobfReference);
+        public void replaceDeobfReference(Token token, EntryReference<Entry<?>, Entry<?>> newDeobfReference) {
+                EntryReference<Entry<?>, Entry<?>> oldDeobfReferences = this.tokenToReference.replace(token, newDeobfReference);
+
+                Collection<Token> tokens = this.referenceToTokens.removeAll(oldDeobfReferences);
                 this.referenceToTokens.putAll(newDeobfReference, tokens);
         }
 
@@ -187,11 +186,11 @@ public class SourceIndex {
                 return this.declarationToToken.values();
         }
 
-        public Iterable<Entry> declarations() {
+        public Iterable<Entry<?>> declarations() {
                 return this.declarationToToken.keySet();
         }
 
-        public Token getDeclarationToken(Entry deobfEntry) {
+        public Token getDeclarationToken(Entry<?> deobfEntry) {
                 return this.declarationToToken.get(deobfEntry);
         }
 
diff --git a/src/main/java/cuchaz/enigma/analysis/SourceIndexClassVisitor.java b/src/main/java/cuchaz/enigma/analysis/SourceIndexClassVisitor.java
index cad0857..486603c 100644
--- a/src/main/java/cuchaz/enigma/analysis/SourceIndexClassVisitor.java
+++ b/src/main/java/cuchaz/enigma/analysis/SourceIndexClassVisitor.java
@@ -17,9 +17,12 @@ import com.strobel.assembler.metadata.TypeDefinition;
 import com.strobel.assembler.metadata.TypeReference;
 import com.strobel.decompiler.languages.TextLocation;
 import com.strobel.decompiler.languages.java.ast.*;
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.Signature;
-import cuchaz.enigma.mapping.entry.*;
+import cuchaz.enigma.translation.representation.ProcyonEntryFactory;
+import cuchaz.enigma.translation.representation.ReferencedEntryPool;
+import cuchaz.enigma.translation.representation.entry.ClassDefEntry;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.FieldDefEntry;
+import cuchaz.enigma.translation.representation.entry.MethodDefEntry;
 
 public class SourceIndexClassVisitor extends SourceIndexVisitor {
         private final ReferencedEntryPool entryPool;
@@ -37,7 +40,7 @@ public class SourceIndexClassVisitor extends SourceIndexVisitor {
         public Void visitTypeDeclaration(TypeDeclaration node, SourceIndex index) {
                 // is this this class, or a subtype?
                 TypeDefinition def = node.getUserData(Keys.TYPE_DEFINITION);
-                ClassDefEntry classEntry = new ClassDefEntry(def.getInternalName(), Signature.createSignature(def.getSignature()), new AccessFlags(def.getModifiers()));
+                ClassDefEntry classEntry = ClassDefEntry.parse(def);
                 if (!classEntry.equals(this.classEntry)) {
                         // it's a subtype, recurse
                         index.addDeclaration(node.getNameToken(), classEntry);
@@ -68,7 +71,7 @@ public class SourceIndexClassVisitor extends SourceIndexVisitor {
                         tokenNode = node.getModifiers().firstOrNullObject();
                 }
                 index.addDeclaration(tokenNode, methodEntry);
-                return node.acceptVisitor(new SourceIndexMethodVisitor(entryPool, classEntry, methodEntry), index);
+                return node.acceptVisitor(new SourceIndexMethodVisitor(entryPool, methodEntry), index);
         }
 
         @Override
@@ -76,7 +79,7 @@ public class SourceIndexClassVisitor extends SourceIndexVisitor {
                 MethodDefinition def = node.getUserData(Keys.METHOD_DEFINITION);
                 MethodDefEntry methodEntry = entryFactory.getMethodDefEntry(def);
                 index.addDeclaration(node.getNameToken(), methodEntry);
-                return node.acceptVisitor(new SourceIndexMethodVisitor(entryPool, classEntry, methodEntry), index);
+                return node.acceptVisitor(new SourceIndexMethodVisitor(entryPool, methodEntry), index);
         }
 
         @Override
diff --git a/src/main/java/cuchaz/enigma/analysis/SourceIndexMethodVisitor.java b/src/main/java/cuchaz/enigma/analysis/SourceIndexMethodVisitor.java
index 139fcea..73db28f 100644
--- a/src/main/java/cuchaz/enigma/analysis/SourceIndexMethodVisitor.java
+++ b/src/main/java/cuchaz/enigma/analysis/SourceIndexMethodVisitor.java
@@ -17,8 +17,9 @@ import com.strobel.assembler.metadata.*;
 import com.strobel.decompiler.ast.Variable;
 import com.strobel.decompiler.languages.TextLocation;
 import com.strobel.decompiler.languages.java.ast.*;
-import cuchaz.enigma.mapping.TypeDescriptor;
-import cuchaz.enigma.mapping.entry.*;
+import cuchaz.enigma.translation.representation.TypeDescriptor;
+import cuchaz.enigma.translation.representation.*;
+import cuchaz.enigma.translation.representation.entry.*;
 
 import java.lang.Error;
 import java.util.HashMap;
@@ -26,19 +27,15 @@ import java.util.Map;
 
 public class SourceIndexMethodVisitor extends SourceIndexVisitor {
         private final ReferencedEntryPool entryPool;
-        private final ProcyonEntryFactory entryFactory;
 
-        private final ClassDefEntry ownerEntry;
         private final MethodDefEntry methodEntry;
 
         private Multimap<String, Identifier> unmatchedIdentifier = HashMultimap.create();
-        private Map<String, Entry> identifierEntryCache = new HashMap<>();
+        private Map<String, Entry<?>> identifierEntryCache = new HashMap<>();
 
-        public SourceIndexMethodVisitor(ReferencedEntryPool entryPool, ClassDefEntry ownerEntry, MethodDefEntry methodEntry) {
+        public SourceIndexMethodVisitor(ReferencedEntryPool entryPool, MethodDefEntry methodEntry) {
                 super(entryPool);
                 this.entryPool = entryPool;
-                this.entryFactory = new ProcyonEntryFactory(entryPool);
-                this.ownerEntry = ownerEntry;
                 this.methodEntry = methodEntry;
         }
 
@@ -86,7 +83,7 @@ public class SourceIndexMethodVisitor extends SourceIndexVisitor {
                         ClassEntry classEntry = entryPool.getClass(ref.getDeclaringType().getInternalName());
                         FieldEntry fieldEntry = entryPool.getField(classEntry, ref.getName(), new TypeDescriptor(erasedSignature));
                         if (fieldEntry == null) {
-                                throw new Error("Failed to find field " + ref.getName() + " on " + classEntry.getName());
+                                throw new Error("Failed to find field " + ref.getName() + " on " + classEntry.getFullName());
                         }
                         index.addReference(node.getMemberNameToken(), fieldEntry, this.methodEntry);
                 }
@@ -128,7 +125,7 @@ public class SourceIndexMethodVisitor extends SourceIndexVisitor {
                         ClassEntry classEntry = entryPool.getClass(ref.getDeclaringType().getInternalName());
                         FieldEntry fieldEntry = entryPool.getField(classEntry, ref.getName(), new TypeDescriptor(ref.getErasedSignature()));
                         if (fieldEntry == null) {
-                                throw new Error("Failed to find field " + ref.getName() + " on " + classEntry.getName());
+                                throw new Error("Failed to find field " + ref.getName() + " on " + classEntry.getFullName());
                         }
                         index.addReference(node.getIdentifierToken(), fieldEntry, this.methodEntry);
                 } else
@@ -144,7 +141,7 @@ public class SourceIndexMethodVisitor extends SourceIndexVisitor {
         }
 
         private void addDeclarationToUnmatched(String key, SourceIndex index) {
-                Entry entry = identifierEntryCache.get(key);
+                Entry<?> entry = identifierEntryCache.get(key);
 
                 // This cannot happened in theory
                 if (entry == null)
diff --git a/src/main/java/cuchaz/enigma/analysis/SourceIndexVisitor.java b/src/main/java/cuchaz/enigma/analysis/SourceIndexVisitor.java
index e588d24..564830c 100644
--- a/src/main/java/cuchaz/enigma/analysis/SourceIndexVisitor.java
+++ b/src/main/java/cuchaz/enigma/analysis/SourceIndexVisitor.java
@@ -14,10 +14,8 @@ package cuchaz.enigma.analysis;
 import com.strobel.assembler.metadata.TypeDefinition;
 import com.strobel.decompiler.languages.java.ast.*;
 import com.strobel.decompiler.patterns.Pattern;
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.Signature;
-import cuchaz.enigma.mapping.entry.ClassDefEntry;
-import cuchaz.enigma.mapping.entry.ReferencedEntryPool;
+import cuchaz.enigma.translation.representation.ReferencedEntryPool;
+import cuchaz.enigma.translation.representation.entry.ClassDefEntry;
 
 public class SourceIndexVisitor implements IAstVisitor<SourceIndex, Void> {
         private final ReferencedEntryPool entryPool;
@@ -29,7 +27,7 @@ public class SourceIndexVisitor implements IAstVisitor<SourceIndex, Void> {
         @Override
         public Void visitTypeDeclaration(TypeDeclaration node, SourceIndex index) {
                 TypeDefinition def = node.getUserData(Keys.TYPE_DEFINITION);
-                ClassDefEntry classEntry = new ClassDefEntry(def.getInternalName(), Signature.createSignature(def.getSignature()), new AccessFlags(def.getModifiers()));
+                ClassDefEntry classEntry = ClassDefEntry.parse(def);
                 index.addDeclaration(node.getNameToken(), classEntry);
 
                 return node.acceptVisitor(new SourceIndexClassVisitor(entryPool, classEntry), index);
diff --git a/src/main/java/cuchaz/enigma/analysis/TranslationIndex.java b/src/main/java/cuchaz/enigma/analysis/TranslationIndex.java
deleted file mode 100644
index 984d84b..0000000
--- a/src/main/java/cuchaz/enigma/analysis/TranslationIndex.java
+++ /dev/null
@@ -1,275 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.analysis;
-
-import com.google.common.cache.Cache;
-import com.google.common.cache.CacheBuilder;
-import com.google.common.collect.HashMultimap;
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
-import com.google.common.collect.Multimap;
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.*;
-import cuchaz.enigma.mapping.entry.*;
-
-import java.util.*;
-
-public class TranslationIndex {
-
-        private final ReferencedEntryPool entryPool;
-        private Map<ClassEntry, ClassEntry> superclasses;
-        private Map<Entry, DefEntry> defEntries = new HashMap<>();
-        private Multimap<ClassEntry, FieldDefEntry> fieldEntries;
-        private Multimap<ClassEntry, MethodDefEntry> methodEntries;
-        private Multimap<ClassEntry, ClassEntry> interfaces;
-
-        public TranslationIndex(ReferencedEntryPool entryPool) {
-                this.entryPool = entryPool;
-                this.superclasses = Maps.newHashMap();
-                this.fieldEntries = HashMultimap.create();
-                this.methodEntries = HashMultimap.create();
-                this.interfaces = HashMultimap.create();
-
-                for (FieldDefEntry entry : fieldEntries.values()) {
-                        defEntries.put(entry, entry);
-                }
-
-                for (MethodDefEntry entry : methodEntries.values()) {
-                        defEntries.put(entry, entry);
-                }
-        }
-
-        public TranslationIndex(TranslationIndex other, Translator translator) {
-                this.entryPool = other.entryPool;
-
-                // translate the superclasses
-                this.superclasses = Maps.newHashMap();
-                for (Map.Entry<ClassEntry, ClassEntry> mapEntry : other.superclasses.entrySet()) {
-                        this.superclasses.put(translator.getTranslatedClass(mapEntry.getKey()), translator.getTranslatedClass(mapEntry.getValue()));
-                }
-
-                // translate the interfaces
-                this.interfaces = HashMultimap.create();
-                for (Map.Entry<ClassEntry, ClassEntry> mapEntry : other.interfaces.entries()) {
-                        this.interfaces.put(
-                                        translator.getTranslatedClass(mapEntry.getKey()),
-                                        translator.getTranslatedClass(mapEntry.getValue())
-                        );
-                }
-
-                // translate the fields
-                this.fieldEntries = HashMultimap.create();
-                for (Map.Entry<ClassEntry, FieldDefEntry> mapEntry : other.fieldEntries.entries()) {
-                        this.fieldEntries.put(
-                                        translator.getTranslatedClass(mapEntry.getKey()),
-                                        translator.getTranslatedFieldDef(mapEntry.getValue())
-                        );
-                }
-
-                this.methodEntries = HashMultimap.create();
-                for (Map.Entry<ClassEntry, MethodDefEntry> mapEntry : other.methodEntries.entries()) {
-                        this.methodEntries.put(
-                                        translator.getTranslatedClass(mapEntry.getKey()),
-                                        translator.getTranslatedMethodDef(mapEntry.getValue())
-                        );
-                }
-
-                for (FieldDefEntry entry : fieldEntries.values()) {
-                        defEntries.put(entry, entry);
-                }
-
-                for (MethodDefEntry entry : methodEntries.values()) {
-                        defEntries.put(entry, entry);
-                }
-        }
-
-        protected ClassDefEntry indexClass(int access, String name, String signature, String superName, String[] interfaces) {
-                ClassDefEntry classEntry = new ClassDefEntry(name, Signature.createSignature(signature), new AccessFlags(access));
-                if (isJre(classEntry)) {
-                        return null;
-                }
-
-                // add the superclass
-                ClassEntry superclassEntry = entryPool.getClass(superName);
-                if (superclassEntry != null) {
-                        this.superclasses.put(classEntry, superclassEntry);
-                }
-
-                // add the interfaces
-                for (String interfaceClassName : interfaces) {
-                        ClassEntry interfaceClassEntry = entryPool.getClass(interfaceClassName);
-                        if (!isJre(interfaceClassEntry)) {
-                                this.interfaces.put(classEntry, interfaceClassEntry);
-                        }
-                }
-
-                return classEntry;
-        }
-
-        protected void indexField(FieldDefEntry fieldEntry) {
-                this.fieldEntries.put(fieldEntry.getOwnerClassEntry(), fieldEntry);
-                this.defEntries.put(fieldEntry, fieldEntry);
-        }
-
-        protected void indexMethod(MethodDefEntry methodEntry) {
-                this.methodEntries.put(methodEntry.getOwnerClassEntry(), methodEntry);
-                this.defEntries.put(methodEntry, methodEntry);
-        }
-
-        public void renameClasses(Map<String, String> renames) {
-                EntryRenamer.renameClassesInMap(renames, this.superclasses);
-                EntryRenamer.renameClassesInMultimap(renames, this.fieldEntries);
-                EntryRenamer.renameClassesInMultimap(renames, this.methodEntries);
-
-                this.defEntries.clear();
-                for (FieldDefEntry entry : fieldEntries.values()) {
-                        defEntries.put(entry, entry);
-                }
-
-                for (MethodDefEntry entry : methodEntries.values()) {
-                        defEntries.put(entry, entry);
-                }
-        }
-
-        public ClassEntry getSuperclass(ClassEntry classEntry) {
-                return this.superclasses.get(classEntry);
-        }
-
-        public List<ClassEntry> getAncestry(ClassEntry classEntry) {
-                List<ClassEntry> ancestors = Lists.newArrayList();
-                while (classEntry != null) {
-                        classEntry = getSuperclass(classEntry);
-                        if (classEntry != null) {
-                                ancestors.add(classEntry);
-                        }
-                }
-                return ancestors;
-        }
-
-        public List<ClassEntry> getImplementers(ClassEntry classEntry) {
-                // linear search is fast enough for now
-                List<ClassEntry> implementers = Lists.newArrayList();
-                for (ClassEntry itf : this.interfaces.keySet()) {
-                        if (this.interfaces.containsEntry(itf, classEntry)) {
-                                implementers.add(itf);
-                        }
-                }
-                return implementers;
-        }
-
-        public List<ClassEntry> getSubclass(ClassEntry classEntry) {
-                // linear search is fast enough for now
-                List<ClassEntry> subclasses = Lists.newArrayList();
-                for (Map.Entry<ClassEntry, ClassEntry> entry : this.superclasses.entrySet()) {
-                        ClassEntry subclass = entry.getKey();
-                        ClassEntry superclass = entry.getValue();
-                        if (classEntry.equals(superclass)) {
-                                subclasses.add(subclass);
-                        }
-                }
-                return subclasses;
-        }
-
-        public void getSubclassesRecursively(Set<ClassEntry> out, ClassEntry classEntry) {
-                for (ClassEntry subclassEntry : getSubclass(classEntry)) {
-                        out.add(subclassEntry);
-                        getSubclassesRecursively(out, subclassEntry);
-                }
-        }
-
-        public void getSubclassNamesRecursively(Set<String> out, ClassEntry classEntry) {
-                for (ClassEntry subclassEntry : getSubclass(classEntry)) {
-                        out.add(subclassEntry.getName());
-                        getSubclassNamesRecursively(out, subclassEntry);
-                }
-        }
-
-        public Collection<Map.Entry<ClassEntry, ClassEntry>> getClassInterfaces() {
-                return this.interfaces.entries();
-        }
-
-        public Collection<ClassEntry> getInterfaces(ClassEntry classEntry) {
-                return this.interfaces.get(classEntry);
-        }
-
-        public boolean isInterface(ClassEntry classEntry) {
-                return this.interfaces.containsValue(classEntry);
-        }
-
-        public boolean entryExists(Entry entry) {
-                if (entry == null) {
-                        return false;
-                }
-
-                if (entry instanceof FieldEntry) {
-                        return fieldExists((FieldEntry) entry);
-                } else if (entry instanceof MethodEntry) {
-                        return methodExists((MethodEntry) entry);
-                } else if (entry instanceof LocalVariableEntry) {
-                        return methodExists(((LocalVariableEntry) entry).getOwnerEntry());
-                }
-                throw new IllegalArgumentException("Cannot check existence for " + entry.getClass());
-        }
-
-        public boolean fieldExists(FieldEntry fieldEntry) {
-                return this.fieldEntries.containsEntry(fieldEntry.getOwnerClassEntry(), fieldEntry);
-        }
-
-        public boolean methodExists(MethodEntry methodEntry) {
-                return this.methodEntries.containsEntry(methodEntry.getOwnerClassEntry(), methodEntry);
-        }
-
-        public ClassEntry resolveEntryOwner(Entry entry) {
-                if (entry instanceof ClassEntry) {
-                        return (ClassEntry) entry;
-                }
-
-                if (entryExists(entry)) {
-                        return entry.getOwnerClassEntry();
-                }
-
-                DefEntry def = defEntries.get(entry);
-                if (def != null && (def.getAccess().isPrivate())) {
-                        return null;
-                }
-
-                // if we're protected/public/non-static, chances are we're somewhere down
-                LinkedList<ClassEntry> classEntries = new LinkedList<>();
-                classEntries.add(entry.getOwnerClassEntry());
-                while (!classEntries.isEmpty()) {
-                        ClassEntry c = classEntries.remove();
-                        Entry cEntry = entry.updateOwnership(c);
-
-                        if (entryExists(cEntry)) {
-                                def = defEntries.get(cEntry);
-                                if (def == null || (!def.getAccess().isPrivate())) {
-                                        return cEntry.getOwnerClassEntry();
-                                }
-                        }
-
-                        ClassEntry superC = getSuperclass(c);
-                        if (superC != null) {
-                                classEntries.add(superC);
-                        }
-                        if (entry instanceof MethodEntry) {
-                                classEntries.addAll(getInterfaces(c));
-                        }
-                }
-
-                return null;
-        }
-
-        private boolean isJre(ClassEntry classEntry) {
-                String packageName = classEntry.getPackageName();
-                return packageName != null && (packageName.startsWith("java") || packageName.startsWith("javax"));
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/analysis/index/BridgeMethodIndex.java b/src/main/java/cuchaz/enigma/analysis/index/BridgeMethodIndex.java
new file mode 100644
index 0000000..e1903d9
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/analysis/index/BridgeMethodIndex.java
@@ -0,0 +1,77 @@
+package cuchaz.enigma.analysis.index;
+
+import com.google.common.collect.Maps;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryResolver;
+import cuchaz.enigma.translation.representation.AccessFlags;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
+
+import javax.annotation.Nullable;
+import java.util.Collection;
+import java.util.Map;
+
+public class BridgeMethodIndex implements JarIndexer, RemappableIndex {
+        private final EntryIndex entryIndex;
+        private final ReferenceIndex referenceIndex;
+
+        private Map<MethodEntry, MethodEntry> accessedToBridge = Maps.newHashMap();
+
+        public BridgeMethodIndex(EntryIndex entryIndex, ReferenceIndex referenceIndex) {
+                this.entryIndex = entryIndex;
+                this.referenceIndex = referenceIndex;
+        }
+
+        @Override
+        public void remap(Translator translator) {
+                accessedToBridge = translator.translate(accessedToBridge);
+        }
+
+        @Override
+        public BridgeMethodIndex remapped(Translator translator) {
+                BridgeMethodIndex index = new BridgeMethodIndex(entryIndex, referenceIndex);
+                index.accessedToBridge = translator.translate(accessedToBridge);
+
+                return index;
+        }
+
+        @Override
+        public void processIndex(EntryResolver resolver) {
+                // look for access and bridged methods
+                for (MethodEntry methodEntry : entryIndex.getMethods()) {
+                        AccessFlags access = entryIndex.getMethodAccess(methodEntry);
+                        if (access == null || !access.isSynthetic()) {
+                                continue;
+                        }
+
+                        indexSyntheticMethod(methodEntry, access);
+                }
+        }
+
+        private void indexSyntheticMethod(MethodEntry syntheticMethod, AccessFlags access) {
+                if (access.isBridge()) {
+                        MethodEntry accessedMethod = findAccessMethod(syntheticMethod);
+                        if (accessedMethod != null) {
+                                accessedToBridge.put(accessedMethod, syntheticMethod);
+                        }
+                }
+        }
+
+        private MethodEntry findAccessMethod(MethodEntry method) {
+                // we want to find all compiler-added methods that directly call another with no processing
+
+                // get all the methods that we call
+                final Collection<MethodEntry> referencedMethods = referenceIndex.getMethodsReferencedBy(method);
+
+                // is there just one?
+                if (referencedMethods.size() != 1) {
+                        return null;
+                }
+
+                return referencedMethods.stream().findFirst().orElse(null);
+        }
+
+        @Nullable
+        public MethodEntry getBridgeFromAccessed(MethodEntry entry) {
+                return accessedToBridge.get(entry);
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/analysis/index/EntryIndex.java b/src/main/java/cuchaz/enigma/analysis/index/EntryIndex.java
new file mode 100644
index 0000000..55bfbc2
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/analysis/index/EntryIndex.java
@@ -0,0 +1,109 @@
+package cuchaz.enigma.analysis.index;
+
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.representation.AccessFlags;
+import cuchaz.enigma.translation.representation.entry.*;
+
+import javax.annotation.Nullable;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+
+public class EntryIndex implements JarIndexer, RemappableIndex {
+        private Map<ClassEntry, AccessFlags> classes = new HashMap<>();
+        private Map<FieldEntry, AccessFlags> fields = new HashMap<>();
+        private Map<MethodEntry, AccessFlags> methods = new HashMap<>();
+
+        @Override
+        public void remap(Translator translator) {
+                classes = translator.translateKeys(classes);
+                fields = translator.translateKeys(fields);
+                methods = translator.translateKeys(methods);
+        }
+
+        @Override
+        public EntryIndex remapped(Translator translator) {
+                EntryIndex index = new EntryIndex();
+                index.classes = translator.translateKeys(classes);
+                index.fields = translator.translateKeys(fields);
+                index.methods = translator.translateKeys(methods);
+
+                return index;
+        }
+
+        @Override
+        public void indexClass(ClassDefEntry classEntry) {
+                classes.put(classEntry, classEntry.getAccess());
+        }
+
+        @Override
+        public void indexMethod(MethodDefEntry methodEntry) {
+                methods.put(methodEntry, methodEntry.getAccess());
+        }
+
+        @Override
+        public void indexField(FieldDefEntry fieldEntry) {
+                fields.put(fieldEntry, fieldEntry.getAccess());
+        }
+
+        public boolean hasClass(ClassEntry entry) {
+                return classes.containsKey(entry);
+        }
+
+        public boolean hasMethod(MethodEntry entry) {
+                return methods.containsKey(entry);
+        }
+
+        public boolean hasField(FieldEntry entry) {
+                return fields.containsKey(entry);
+        }
+
+        public boolean hasEntry(Entry<?> entry) {
+                if (entry instanceof ClassEntry) {
+                        return hasClass((ClassEntry) entry);
+                } else if (entry instanceof MethodEntry) {
+                        return hasMethod((MethodEntry) entry);
+                } else if (entry instanceof FieldEntry) {
+                        return hasField((FieldEntry) entry);
+                } else if (entry instanceof LocalVariableEntry) {
+                        return hasMethod(((LocalVariableEntry) entry).getParent());
+                }
+
+                return false;
+        }
+
+        @Nullable
+        public AccessFlags getMethodAccess(MethodEntry entry) {
+                return methods.get(entry);
+        }
+
+        @Nullable
+        public AccessFlags getFieldAccess(FieldEntry entry) {
+                return fields.get(entry);
+        }
+
+        @Nullable
+        public AccessFlags getEntryAccess(Entry<?> entry) {
+                if (entry instanceof MethodEntry) {
+                        return getMethodAccess((MethodEntry) entry);
+                } else if (entry instanceof FieldEntry) {
+                        return getFieldAccess((FieldEntry) entry);
+                } else if (entry instanceof LocalVariableEntry) {
+                        return getMethodAccess(((LocalVariableEntry) entry).getParent());
+                }
+
+                return null;
+        }
+
+        public Collection<ClassEntry> getClasses() {
+                return classes.keySet();
+        }
+
+        public Collection<MethodEntry> getMethods() {
+                return methods.keySet();
+        }
+
+        public Collection<FieldEntry> getFields() {
+                return fields.keySet();
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/analysis/IndexClassVisitor.java b/src/main/java/cuchaz/enigma/analysis/index/IndexClassVisitor.java
index 4d5e803..f9cb23c 100644
--- a/src/main/java/cuchaz/enigma/analysis/IndexClassVisitor.java
+++ b/src/main/java/cuchaz/enigma/analysis/index/IndexClassVisitor.java
@@ -1,43 +1,40 @@
-package cuchaz.enigma.analysis;
+package cuchaz.enigma.analysis.index;
 
-import cuchaz.enigma.mapping.entry.ClassDefEntry;
+import cuchaz.enigma.translation.representation.entry.ClassDefEntry;
+import cuchaz.enigma.translation.representation.entry.FieldDefEntry;
+import cuchaz.enigma.translation.representation.entry.MethodDefEntry;
 import org.objectweb.asm.ClassVisitor;
 import org.objectweb.asm.FieldVisitor;
 import org.objectweb.asm.MethodVisitor;
 
 public class IndexClassVisitor extends ClassVisitor {
-        private final JarIndex index;
+        private final JarIndexer indexer;
         private ClassDefEntry classEntry;
 
-        public IndexClassVisitor(JarIndex index, int api) {
+        public IndexClassVisitor(JarIndex indexer, int api) {
                 super(api);
-                this.index = index;
-        }
-
-        public IndexClassVisitor(JarIndex index, int api, ClassVisitor cv) {
-                super(api, cv);
-                this.index = index;
+                this.indexer = indexer;
         }
 
         @Override
         public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
-                this.classEntry = this.index.indexClass(access, name, signature, superName, interfaces);
+                classEntry = ClassDefEntry.parse(access, name, signature, superName, interfaces);
+                indexer.indexClass(classEntry);
+
                 super.visit(version, access, name, signature, superName, interfaces);
         }
 
         @Override
         public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
-                if (this.classEntry != null) {
-                        this.index.indexField(this.classEntry, access, name, desc, signature);
-                }
+                indexer.indexField(FieldDefEntry.parse(classEntry, access, name, desc, signature));
+
                 return super.visitField(access, name, desc, signature, value);
         }
 
         @Override
         public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
-                if (this.classEntry != null) {
-                        this.index.indexMethod(this.classEntry, access, name, desc, signature);
-                }
+                indexer.indexMethod(MethodDefEntry.parse(classEntry, access, name, desc, signature));
+
                 return super.visitMethod(access, name, desc, signature, exceptions);
         }
 }
diff --git a/src/main/java/cuchaz/enigma/analysis/index/IndexReferenceVisitor.java b/src/main/java/cuchaz/enigma/analysis/index/IndexReferenceVisitor.java
new file mode 100644
index 0000000..ba5d3b6
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/analysis/index/IndexReferenceVisitor.java
@@ -0,0 +1,83 @@
+package cuchaz.enigma.analysis.index;
+
+import cuchaz.enigma.translation.representation.AccessFlags;
+import cuchaz.enigma.translation.representation.MethodDescriptor;
+import cuchaz.enigma.translation.representation.Signature;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.FieldEntry;
+import cuchaz.enigma.translation.representation.entry.MethodDefEntry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
+import org.objectweb.asm.ClassVisitor;
+import org.objectweb.asm.Handle;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+
+public class IndexReferenceVisitor extends ClassVisitor {
+        private final JarIndexer indexer;
+        private ClassEntry classEntry;
+
+        public IndexReferenceVisitor(JarIndexer indexer, int api) {
+                super(api);
+                this.indexer = indexer;
+        }
+
+        @Override
+        public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
+                this.classEntry = new ClassEntry(name);
+        }
+
+        @Override
+        public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
+                MethodDefEntry entry = new MethodDefEntry(classEntry, name, new MethodDescriptor(desc), Signature.createSignature(signature), new AccessFlags(access));
+                return new Method(this.indexer, entry, this.api);
+        }
+
+        private static class Method extends MethodVisitor {
+                private final JarIndexer indexer;
+                private final MethodDefEntry callerEntry;
+
+                public Method(JarIndexer indexer, MethodDefEntry callerEntry, int api) {
+                        super(api);
+                        this.indexer = indexer;
+                        this.callerEntry = callerEntry;
+                }
+
+                @Override
+                public void visitFieldInsn(int opcode, String owner, String name, String desc) {
+                        FieldEntry fieldEntry = FieldEntry.parse(owner, name, desc);
+                        this.indexer.indexFieldReference(callerEntry, fieldEntry);
+                }
+
+                @Override
+                public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) {
+                        MethodEntry methodEntry = MethodEntry.parse(owner, name, desc);
+                        this.indexer.indexMethodReference(callerEntry, methodEntry);
+                }
+
+                @Override
+                public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs) {
+                        for (Object bsmArg : bsmArgs) {
+                                if (bsmArg instanceof Handle) {
+                                        Handle handle = (Handle) bsmArg;
+                                        switch (handle.getTag()) {
+                                                case Opcodes.H_GETFIELD:
+                                                case Opcodes.H_GETSTATIC:
+                                                case Opcodes.H_PUTFIELD:
+                                                case Opcodes.H_PUTSTATIC:
+                                                        FieldEntry fieldEntry = FieldEntry.parse(handle.getOwner(), handle.getName(), handle.getDesc());
+                                                        this.indexer.indexFieldReference(callerEntry, fieldEntry);
+                                                        break;
+                                                case Opcodes.H_INVOKEINTERFACE:
+                                                case Opcodes.H_INVOKESPECIAL:
+                                                case Opcodes.H_INVOKESTATIC:
+                                                case Opcodes.H_INVOKEVIRTUAL:
+                                                case Opcodes.H_NEWINVOKESPECIAL:
+                                                        MethodEntry methodEntry = MethodEntry.parse(handle.getOwner(), handle.getName(), handle.getDesc());
+                                                        this.indexer.indexMethodReference(callerEntry, methodEntry);
+                                                        break;
+                                        }
+                                }
+                        }
+                }
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/analysis/index/InheritanceIndex.java b/src/main/java/cuchaz/enigma/analysis/index/InheritanceIndex.java
new file mode 100644
index 0000000..d165cc8
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/analysis/index/InheritanceIndex.java
@@ -0,0 +1,97 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ * <p>
+ * Contributors:
+ * Jeff Martin - initial API and implementation
+ ******************************************************************************/
+
+package cuchaz.enigma.analysis.index;
+
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
+import com.google.common.collect.Sets;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.representation.entry.ClassDefEntry;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+
+import java.util.Collection;
+import java.util.LinkedList;
+import java.util.Set;
+
+public class InheritanceIndex implements JarIndexer, RemappableIndex {
+        private Multimap<ClassEntry, ClassEntry> classParents = HashMultimap.create();
+        private Multimap<ClassEntry, ClassEntry> classChildren = HashMultimap.create();
+
+        @Override
+        public void remap(Translator translator) {
+                classChildren = translator.translate(classChildren);
+                classParents = translator.translate(classParents);
+        }
+
+        @Override
+        public InheritanceIndex remapped(Translator translator) {
+                InheritanceIndex index = new InheritanceIndex();
+                index.classParents = translator.translate(classParents);
+                index.classChildren = translator.translate(classChildren);
+
+                return index;
+        }
+
+        @Override
+        public void indexClass(ClassDefEntry classEntry) {
+                ClassEntry superClass = classEntry.getSuperClass();
+                if (superClass != null) {
+                        indexParent(classEntry, superClass);
+                }
+
+                for (ClassEntry interfaceEntry : classEntry.getInterfaces()) {
+                        indexParent(classEntry, interfaceEntry);
+                }
+        }
+
+        private void indexParent(ClassEntry childEntry, ClassEntry parentEntry) {
+                if (childEntry.isJre() || parentEntry.isJre()) {
+                        return;
+                }
+                classParents.put(childEntry, parentEntry);
+                classChildren.put(parentEntry, childEntry);
+        }
+
+        public Collection<ClassEntry> getParents(ClassEntry classEntry) {
+                return classParents.get(classEntry);
+        }
+
+        public Collection<ClassEntry> getChildren(ClassEntry classEntry) {
+                return classChildren.get(classEntry);
+        }
+
+        public Set<ClassEntry> getAncestors(ClassEntry classEntry) {
+                Set<ClassEntry> ancestors = Sets.newHashSet();
+
+                LinkedList<ClassEntry> ancestorQueue = new LinkedList<>();
+                ancestorQueue.push(classEntry);
+
+                while (!ancestorQueue.isEmpty()) {
+                        ClassEntry ancestor = ancestorQueue.pop();
+                        Collection<ClassEntry> parents = getParents(ancestor);
+
+                        parents.forEach(ancestorQueue::push);
+                        ancestors.addAll(parents);
+                }
+
+                return ancestors;
+        }
+
+        public boolean isParent(ClassEntry classEntry) {
+                return classChildren.containsKey(classEntry);
+        }
+
+        public boolean hasParents(ClassEntry classEntry) {
+                Collection<ClassEntry> parents = classParents.get(classEntry);
+                return parents != null && !parents.isEmpty();
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/analysis/index/JarIndex.java b/src/main/java/cuchaz/enigma/analysis/index/JarIndex.java
new file mode 100644
index 0000000..0880244
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/analysis/index/JarIndex.java
@@ -0,0 +1,165 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ * <p>
+ * Contributors:
+ * Jeff Martin - initial API and implementation
+ ******************************************************************************/
+
+package cuchaz.enigma.analysis.index;
+
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
+import cuchaz.enigma.analysis.ParsedJar;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryResolver;
+import cuchaz.enigma.translation.mapping.IndexEntryResolver;
+import cuchaz.enigma.translation.representation.entry.*;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.Opcodes;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.function.Consumer;
+
+public class JarIndex implements JarIndexer, RemappableIndex {
+        private final EntryIndex entryIndex;
+        private final InheritanceIndex inheritanceIndex;
+        private final ReferenceIndex referenceIndex;
+        private final BridgeMethodIndex bridgeMethodIndex;
+        private final EntryResolver entryResolver;
+
+        private final Collection<JarIndexer> indexers;
+
+        private final Multimap<String, MethodDefEntry> methodImplementations = HashMultimap.create();
+
+        public JarIndex(EntryIndex entryIndex, InheritanceIndex inheritanceIndex, ReferenceIndex referenceIndex, BridgeMethodIndex bridgeMethodIndex) {
+                this.entryIndex = entryIndex;
+                this.inheritanceIndex = inheritanceIndex;
+                this.referenceIndex = referenceIndex;
+                this.bridgeMethodIndex = bridgeMethodIndex;
+                this.indexers = Arrays.asList(entryIndex, inheritanceIndex, referenceIndex, bridgeMethodIndex);
+                this.entryResolver = new IndexEntryResolver(this);
+        }
+
+        public static JarIndex empty() {
+                EntryIndex entryIndex = new EntryIndex();
+                InheritanceIndex inheritanceIndex = new InheritanceIndex();
+                ReferenceIndex referenceIndex = new ReferenceIndex();
+                BridgeMethodIndex bridgeMethodIndex = new BridgeMethodIndex(entryIndex, referenceIndex);
+                return new JarIndex(entryIndex, inheritanceIndex, referenceIndex, bridgeMethodIndex);
+        }
+
+        @Override
+        public void remap(Translator translator) {
+                entryIndex.remap(translator);
+                inheritanceIndex.remap(translator);
+                bridgeMethodIndex.remap(translator);
+        }
+
+        @Override
+        public JarIndex remapped(Translator translator) {
+                EntryIndex entryIndex = this.entryIndex.remapped(translator);
+                InheritanceIndex inheritanceIndex = this.inheritanceIndex.remapped(translator);
+                BridgeMethodIndex bridgeMethodIndex = this.bridgeMethodIndex.remapped(translator);
+
+                JarIndex remappedIndex = new JarIndex(entryIndex, inheritanceIndex, this.referenceIndex, bridgeMethodIndex);
+                remappedIndex.methodImplementations.putAll(methodImplementations);
+
+                return remappedIndex;
+        }
+
+        public void indexJar(ParsedJar jar, Consumer<String> progress) {
+                progress.accept("Indexing entries (1/3)");
+                jar.visitReader(name -> new IndexClassVisitor(this, Opcodes.ASM5), ClassReader.SKIP_CODE);
+
+                progress.accept("Indexing entry references (2/3)");
+                jar.visitReader(name -> new IndexReferenceVisitor(this, Opcodes.ASM5), ClassReader.SKIP_FRAMES);
+
+                progress.accept("Processing index (3/3)");
+                processIndex(entryResolver);
+        }
+
+        @Override
+        public void processIndex(EntryResolver resolver) {
+                indexers.forEach(indexer -> indexer.processIndex(entryResolver));
+        }
+
+        @Override
+        public void indexClass(ClassDefEntry classEntry) {
+                if (classEntry.isJre()) {
+                        return;
+                }
+
+                for (ClassEntry interfaceEntry : classEntry.getInterfaces()) {
+                        if (classEntry.equals(interfaceEntry)) {
+                                throw new IllegalArgumentException("Class cannot be its own interface! " + classEntry);
+                        }
+                }
+
+                indexers.forEach(indexer -> indexer.indexClass(classEntry));
+        }
+
+        @Override
+        public void indexField(FieldDefEntry fieldEntry) {
+                if (fieldEntry.getParent().isJre()) {
+                        return;
+                }
+
+                indexers.forEach(indexer -> indexer.indexField(fieldEntry));
+        }
+
+        @Override
+        public void indexMethod(MethodDefEntry methodEntry) {
+                if (methodEntry.getParent().isJre()) {
+                        return;
+                }
+
+                indexers.forEach(indexer -> indexer.indexMethod(methodEntry));
+
+                if (!methodEntry.isConstructor()) {
+                        methodImplementations.put(methodEntry.getParent().getFullName(), methodEntry);
+                }
+        }
+
+        @Override
+        public void indexMethodReference(MethodDefEntry callerEntry, MethodEntry referencedEntry) {
+                if (callerEntry.getParent().isJre()) {
+                        return;
+                }
+
+                indexers.forEach(indexer -> indexer.indexMethodReference(callerEntry, referencedEntry));
+        }
+
+        @Override
+        public void indexFieldReference(MethodDefEntry callerEntry, FieldEntry referencedEntry) {
+                if (callerEntry.getParent().isJre()) {
+                        return;
+                }
+
+                indexers.forEach(indexer -> indexer.indexFieldReference(callerEntry, referencedEntry));
+        }
+
+        public EntryIndex getEntryIndex() {
+                return entryIndex;
+        }
+
+        public InheritanceIndex getInheritanceIndex() {
+                return this.inheritanceIndex;
+        }
+
+        public ReferenceIndex getReferenceIndex() {
+                return referenceIndex;
+        }
+
+        public BridgeMethodIndex getBridgeMethodIndex() {
+                return bridgeMethodIndex;
+        }
+
+        public EntryResolver getEntryResolver() {
+                return entryResolver;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/analysis/index/JarIndexer.java b/src/main/java/cuchaz/enigma/analysis/index/JarIndexer.java
new file mode 100644
index 0000000..a087e59
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/analysis/index/JarIndexer.java
@@ -0,0 +1,24 @@
+package cuchaz.enigma.analysis.index;
+
+import cuchaz.enigma.translation.mapping.EntryResolver;
+import cuchaz.enigma.translation.representation.entry.*;
+
+public interface JarIndexer {
+        default void indexClass(ClassDefEntry classEntry) {
+        }
+
+        default void indexField(FieldDefEntry fieldEntry) {
+        }
+
+        default void indexMethod(MethodDefEntry methodEntry) {
+        }
+
+        default void indexMethodReference(MethodDefEntry callerEntry, MethodEntry referencedEntry) {
+        }
+
+        default void indexFieldReference(MethodDefEntry callerEntry, FieldEntry referencedEntry) {
+        }
+
+        default void processIndex(EntryResolver resolver) {
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/analysis/index/ReferenceIndex.java b/src/main/java/cuchaz/enigma/analysis/index/ReferenceIndex.java
new file mode 100644
index 0000000..ac11da4
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/analysis/index/ReferenceIndex.java
@@ -0,0 +1,83 @@
+package cuchaz.enigma.analysis.index;
+
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
+import cuchaz.enigma.analysis.EntryReference;
+import cuchaz.enigma.translation.mapping.EntryResolver;
+import cuchaz.enigma.translation.mapping.ResolutionStrategy;
+import cuchaz.enigma.translation.representation.entry.*;
+
+import java.util.Collection;
+import java.util.Map;
+
+public class ReferenceIndex implements JarIndexer {
+        private Multimap<MethodEntry, MethodEntry> methodReferences = HashMultimap.create();
+
+        private Multimap<MethodEntry, EntryReference<MethodEntry, MethodDefEntry>> referencesToMethods = HashMultimap.create();
+        private Multimap<ClassEntry, EntryReference<ClassEntry, MethodDefEntry>> referencesToClasses = HashMultimap.create();
+        private Multimap<FieldEntry, EntryReference<FieldEntry, MethodDefEntry>> referencesToFields = HashMultimap.create();
+
+        @Override
+        public void indexMethodReference(MethodDefEntry callerEntry, MethodEntry referencedEntry) {
+                referencesToMethods.put(referencedEntry, new EntryReference<>(referencedEntry, referencedEntry.getName(), callerEntry));
+                methodReferences.put(callerEntry, referencedEntry);
+
+                if (referencedEntry.isConstructor()) {
+                        ClassEntry referencedClass = referencedEntry.getParent();
+                        referencesToClasses.put(referencedClass, new EntryReference<>(referencedClass, referencedEntry.getName(), callerEntry));
+                }
+        }
+
+        @Override
+        public void indexFieldReference(MethodDefEntry callerEntry, FieldEntry referencedEntry) {
+                referencesToFields.put(referencedEntry, new EntryReference<>(referencedEntry, referencedEntry.getName(), callerEntry));
+        }
+
+        @Override
+        public void processIndex(EntryResolver resolver) {
+                methodReferences = resolveReferences(resolver, methodReferences);
+                referencesToMethods = resolveReferencesTo(resolver, referencesToMethods);
+                referencesToClasses = resolveReferencesTo(resolver, referencesToClasses);
+                referencesToFields = resolveReferencesTo(resolver, referencesToFields);
+        }
+
+        private <K extends Entry<?>, V extends Entry<?>> Multimap<K, V> resolveReferences(EntryResolver resolver, Multimap<K, V> multimap) {
+                Multimap<K, V> resolved = HashMultimap.create();
+                for (Map.Entry<K, V> entry : multimap.entries()) {
+                        resolved.put(resolve(resolver, entry.getKey()), resolve(resolver, entry.getValue()));
+                }
+                return resolved;
+        }
+
+        private <E extends Entry<?>, C extends Entry<?>> Multimap<E, EntryReference<E, C>> resolveReferencesTo(EntryResolver resolver, Multimap<E, EntryReference<E, C>> multimap) {
+                Multimap<E, EntryReference<E, C>> resolved = HashMultimap.create();
+                for (Map.Entry<E, EntryReference<E, C>> entry : multimap.entries()) {
+                        resolved.put(resolve(resolver, entry.getKey()), resolve(resolver, entry.getValue()));
+                }
+                return resolved;
+        }
+
+        private <E extends Entry<?>> E resolve(EntryResolver resolver, E entry) {
+                return resolver.resolveFirstEntry(entry, ResolutionStrategy.RESOLVE_CLOSEST);
+        }
+
+        private <E extends Entry<?>, C extends Entry<?>> EntryReference<E, C> resolve(EntryResolver resolver, EntryReference<E, C> reference) {
+                return resolver.resolveFirstReference(reference, ResolutionStrategy.RESOLVE_CLOSEST);
+        }
+
+        public Collection<MethodEntry> getMethodsReferencedBy(MethodEntry entry) {
+                return methodReferences.get(entry);
+        }
+
+        public Collection<EntryReference<FieldEntry, MethodDefEntry>> getReferencesToField(FieldEntry entry) {
+                return referencesToFields.get(entry);
+        }
+
+        public Collection<EntryReference<ClassEntry, MethodDefEntry>> getReferencesToClass(ClassEntry entry) {
+                return referencesToClasses.get(entry);
+        }
+
+        public Collection<EntryReference<MethodEntry, MethodDefEntry>> getReferencesToMethod(MethodEntry entry) {
+                return referencesToMethods.get(entry);
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/analysis/index/RemappableIndex.java b/src/main/java/cuchaz/enigma/analysis/index/RemappableIndex.java
new file mode 100644
index 0000000..537e772
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/analysis/index/RemappableIndex.java
@@ -0,0 +1,9 @@
+package cuchaz.enigma.analysis.index;
+
+import cuchaz.enigma.translation.Translator;
+
+public interface RemappableIndex {
+        void remap(Translator translator);
+
+        RemappableIndex remapped(Translator translator);
+}
diff --git a/src/main/java/cuchaz/enigma/bytecode/translators/AsmObjectTranslator.java b/src/main/java/cuchaz/enigma/bytecode/translators/AsmObjectTranslator.java
new file mode 100644
index 0000000..1a2b47f
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/bytecode/translators/AsmObjectTranslator.java
@@ -0,0 +1,46 @@
+package cuchaz.enigma.bytecode.translators;
+
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.representation.MethodDescriptor;
+import cuchaz.enigma.translation.representation.TypeDescriptor;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
+import org.objectweb.asm.Handle;
+import org.objectweb.asm.Type;
+
+public class AsmObjectTranslator {
+        public static Type translateType(Translator translator, Type type) {
+                String descString = type.getDescriptor();
+                switch (type.getSort()) {
+                        case Type.OBJECT: {
+                                ClassEntry classEntry = new ClassEntry(type.getInternalName());
+                                return Type.getObjectType(translator.translate(classEntry).getFullName());
+                        }
+                        case Type.ARRAY: {
+                                TypeDescriptor descriptor = new TypeDescriptor(descString);
+                                return Type.getType(translator.translate(descriptor).toString());
+                        }
+                        case Type.METHOD: {
+                                MethodDescriptor descriptor = new MethodDescriptor(descString);
+                                return Type.getMethodType(translator.translate(descriptor).toString());
+                        }
+                }
+                return type;
+        }
+
+        public static Handle translateHandle(Translator translator, Handle handle) {
+                MethodEntry entry = new MethodEntry(new ClassEntry(handle.getOwner()), handle.getName(), new MethodDescriptor(handle.getDesc()));
+                MethodEntry translatedMethod = translator.translate(entry);
+                ClassEntry ownerClass = translatedMethod.getParent();
+                return new Handle(handle.getTag(), ownerClass.getFullName(), translatedMethod.getName(), translatedMethod.getDesc().toString(), handle.isInterface());
+        }
+
+        public static Object translateValue(Translator translator, Object value) {
+                if (value instanceof Type) {
+                        return translateType(translator, (Type) value);
+                } else if (value instanceof Handle) {
+                        return translateHandle(translator, (Handle) value);
+                }
+                return value;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/bytecode/translators/TranslationAnnotationVisitor.java b/src/main/java/cuchaz/enigma/bytecode/translators/TranslationAnnotationVisitor.java
index 2e5b54d..cb843ad 100644
--- a/src/main/java/cuchaz/enigma/bytecode/translators/TranslationAnnotationVisitor.java
+++ b/src/main/java/cuchaz/enigma/bytecode/translators/TranslationAnnotationVisitor.java
@@ -1,9 +1,9 @@
 package cuchaz.enigma.bytecode.translators;
 
-import cuchaz.enigma.mapping.Translator;
-import cuchaz.enigma.mapping.TypeDescriptor;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.FieldEntry;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.representation.TypeDescriptor;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.FieldEntry;
 import org.objectweb.asm.AnnotationVisitor;
 
 public class TranslationAnnotationVisitor extends AnnotationVisitor {
@@ -18,7 +18,7 @@ public class TranslationAnnotationVisitor extends AnnotationVisitor {
 
         @Override
         public void visit(String name, Object value) {
-                super.visit(name, translator.getTranslatedValue(value));
+                super.visit(name, AsmObjectTranslator.translateValue(translator, value));
         }
 
         @Override
@@ -30,22 +30,22 @@ public class TranslationAnnotationVisitor extends AnnotationVisitor {
         public AnnotationVisitor visitAnnotation(String name, String desc) {
                 TypeDescriptor type = new TypeDescriptor(desc);
                 if (name != null) {
-                        FieldEntry annotationField = translator.getTranslatedField(new FieldEntry(annotationEntry, name, type));
+                        FieldEntry annotationField = translator.translate(new FieldEntry(annotationEntry, name, type));
                         return super.visitAnnotation(annotationField.getName(), annotationField.getDesc().toString());
                 } else {
-                        return super.visitAnnotation(null, translator.getTranslatedTypeDesc(type).toString());
+                        return super.visitAnnotation(null, translator.translate(type).toString());
                 }
         }
 
         @Override
         public void visitEnum(String name, String desc, String value) {
                 TypeDescriptor type = new TypeDescriptor(desc);
-                FieldEntry enumField = translator.getTranslatedField(new FieldEntry(type.getTypeEntry(), value, type));
+                FieldEntry enumField = translator.translate(new FieldEntry(type.getTypeEntry(), value, type));
                 if (name != null) {
-                        FieldEntry annotationField = translator.getTranslatedField(new FieldEntry(annotationEntry, name, type));
+                        FieldEntry annotationField = translator.translate(new FieldEntry(annotationEntry, name, type));
                         super.visitEnum(annotationField.getName(), annotationField.getDesc().toString(), enumField.getName());
                 } else {
-                        super.visitEnum(null, translator.getTranslatedTypeDesc(type).toString(), enumField.getName());
+                        super.visitEnum(null, translator.translate(type).toString(), enumField.getName());
                 }
         }
 }
diff --git a/src/main/java/cuchaz/enigma/bytecode/translators/TranslationClassVisitor.java b/src/main/java/cuchaz/enigma/bytecode/translators/TranslationClassVisitor.java
index 5b16138..53d09bb 100644
--- a/src/main/java/cuchaz/enigma/bytecode/translators/TranslationClassVisitor.java
+++ b/src/main/java/cuchaz/enigma/bytecode/translators/TranslationClassVisitor.java
@@ -11,61 +11,53 @@
 
 package cuchaz.enigma.bytecode.translators;
 
-import cuchaz.enigma.analysis.JarIndex;
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.MethodDescriptor;
-import cuchaz.enigma.mapping.Signature;
-import cuchaz.enigma.mapping.Translator;
-import cuchaz.enigma.mapping.TypeDescriptor;
-import cuchaz.enigma.mapping.entry.*;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.representation.MethodDescriptor;
+import cuchaz.enigma.translation.representation.ReferencedEntryPool;
+import cuchaz.enigma.translation.representation.TypeDescriptor;
+import cuchaz.enigma.translation.representation.entry.*;
 import org.objectweb.asm.*;
 
+import java.util.Arrays;
+
 public class TranslationClassVisitor extends ClassVisitor {
         private final Translator translator;
-        private final JarIndex jarIndex;
         private final ReferencedEntryPool entryPool;
 
         private ClassDefEntry obfClassEntry;
-        private Signature obfSignature;
 
-        public TranslationClassVisitor(Translator translator, JarIndex jarIndex, ReferencedEntryPool entryPool, int api, ClassVisitor cv) {
+        public TranslationClassVisitor(Translator translator, ReferencedEntryPool entryPool, int api, ClassVisitor cv) {
                 super(api, cv);
                 this.translator = translator;
-                this.jarIndex = jarIndex;
                 this.entryPool = entryPool;
         }
 
         @Override
         public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
-                obfSignature = Signature.createSignature(signature);
-                obfClassEntry = new ClassDefEntry(name, obfSignature, new AccessFlags(access));
-                ClassDefEntry translatedEntry = translator.getTranslatedClassDef(obfClassEntry);
-                ClassEntry superEntry = translator.getTranslatedClass(entryPool.getClass(superName));
-                String[] translatedInterfaces = new String[interfaces.length];
-                for (int i = 0; i < interfaces.length; i++) {
-                        translatedInterfaces[i] = translator.getTranslatedClass(entryPool.getClass(interfaces[i])).getName();
-                }
-                super.visit(version, translatedEntry.getAccess().getFlags(), translatedEntry.getName(), translatedEntry.getSignature().toString(), superEntry.getName(), translatedInterfaces);
+                obfClassEntry = ClassDefEntry.parse(access, name, signature, superName, interfaces);
+
+                ClassDefEntry translatedEntry = translator.translate(obfClassEntry);
+                String translatedSuper = translatedEntry.getSuperClass() != null ? translatedEntry.getSuperClass().getFullName() : null;
+                String[] translatedInterfaces = Arrays.stream(translatedEntry.getInterfaces()).map(ClassEntry::getFullName).toArray(String[]::new);
+
+                super.visit(version, translatedEntry.getAccess().getFlags(), translatedEntry.getFullName(), translatedEntry.getSignature().toString(), translatedSuper, translatedInterfaces);
         }
 
         @Override
         public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
-                FieldDefEntry entry = new FieldDefEntry(obfClassEntry, name, new TypeDescriptor(desc), Signature.createTypedSignature(signature), new AccessFlags(access));
-                FieldDefEntry translatedEntry = translator.getTranslatedFieldDef(entry);
+                FieldDefEntry entry = FieldDefEntry.parse(obfClassEntry, access, name, desc, signature);
+                FieldDefEntry translatedEntry = translator.translate(entry);
                 FieldVisitor fv = super.visitField(translatedEntry.getAccess().getFlags(), translatedEntry.getName(), translatedEntry.getDesc().toString(), translatedEntry.getSignature().toString(), value);
                 return new TranslationFieldVisitor(translator, translatedEntry, api, fv);
         }
 
         @Override
         public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
-                MethodDefEntry entry = new MethodDefEntry(obfClassEntry, name, new MethodDescriptor(desc), Signature.createSignature(signature), new AccessFlags(access));
-                MethodDefEntry translatedEntry = translator.getTranslatedMethodDef(entry);
-                if (jarIndex.getBridgedMethod(entry) != null) {
-                        translatedEntry.getAccess().setBridge();
-                }
+                MethodDefEntry entry = MethodDefEntry.parse(obfClassEntry, access, name, desc, signature);
+                MethodDefEntry translatedEntry = translator.translate(entry);
                 String[] translatedExceptions = new String[exceptions.length];
                 for (int i = 0; i < exceptions.length; i++) {
-                        translatedExceptions[i] = translator.getTranslatedClass(entryPool.getClass(exceptions[i])).getName();
+                        translatedExceptions[i] = translator.translate(entryPool.getClass(exceptions[i])).getFullName();
                 }
                 MethodVisitor mv = super.visitMethod(translatedEntry.getAccess().getFlags(), translatedEntry.getName(), translatedEntry.getDesc().toString(), translatedEntry.getSignature().toString(), translatedExceptions);
                 return new TranslationMethodVisitor(translator, obfClassEntry, entry, api, mv);
@@ -73,25 +65,25 @@ public class TranslationClassVisitor extends ClassVisitor {
 
         @Override
         public void visitInnerClass(String name, String outerName, String innerName, int access) {
-                ClassDefEntry translatedEntry = translator.getTranslatedClassDef(new ClassDefEntry(name, obfSignature, new AccessFlags(access)));
-                String translatedName = translatedEntry.getName();
-                int separatorIndex = translatedName.lastIndexOf("$");
-                String parentName = translatedName.substring(0, separatorIndex);
-                String childName = translatedName.substring(separatorIndex + 1);
-
-                ClassEntry outerEntry = translator.getTranslatedClass(entryPool.getClass(parentName));
+                ClassDefEntry classEntry = ClassDefEntry.parse(access, name, obfClassEntry.getSignature().toString(), null, new String[0]);
+                ClassDefEntry translatedEntry = translator.translate(classEntry);
+                ClassEntry translatedOuterClass = translatedEntry.getOuterClass();
+                if (translatedOuterClass == null) {
+                        throw new IllegalStateException("Translated inner class did not have outer class");
+                }
 
                 // Anonymous classes do not specify an outer or inner name. As we do not translate from the given parameter, ignore if the input is null
-                String translatedOuterName = outerName != null ? outerEntry.getName() : null;
-                String translatedInnerName = innerName != null ? childName : null;
+                String translatedName = translatedEntry.getFullName();
+                String translatedOuterName = outerName != null ? translatedOuterClass.getFullName() : null;
+                String translatedInnerName = innerName != null ? translatedEntry.getName() : null;
                 super.visitInnerClass(translatedName, translatedOuterName, translatedInnerName, translatedEntry.getAccess().getFlags());
         }
 
         @Override
         public void visitOuterClass(String owner, String name, String desc) {
                 if (desc != null) {
-                        MethodEntry translatedEntry = translator.getTranslatedMethod(new MethodEntry(new ClassEntry(owner), name, new MethodDescriptor(desc)));
-                        super.visitOuterClass(translatedEntry.getClassName(), translatedEntry.getName(), translatedEntry.getDesc().toString());
+                        MethodEntry translatedEntry = translator.translate(new MethodEntry(new ClassEntry(owner), name, new MethodDescriptor(desc)));
+                        super.visitOuterClass(translatedEntry.getParent().getFullName(), translatedEntry.getName(), translatedEntry.getDesc().toString());
                 } else {
                         super.visitOuterClass(owner, name, desc);
                 }
@@ -99,14 +91,14 @@ public class TranslationClassVisitor extends ClassVisitor {
 
         @Override
         public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
-                TypeDescriptor translatedDesc = translator.getTranslatedTypeDesc(new TypeDescriptor(desc));
+                TypeDescriptor translatedDesc = translator.translate(new TypeDescriptor(desc));
                 AnnotationVisitor av = super.visitAnnotation(translatedDesc.toString(), visible);
                 return new TranslationAnnotationVisitor(translator, translatedDesc.getTypeEntry(), api, av);
         }
 
         @Override
         public AnnotationVisitor visitTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) {
-                TypeDescriptor translatedDesc = translator.getTranslatedTypeDesc(new TypeDescriptor(desc));
+                TypeDescriptor translatedDesc = translator.translate(new TypeDescriptor(desc));
                 AnnotationVisitor av = super.visitTypeAnnotation(typeRef, typePath, translatedDesc.toString(), visible);
                 return new TranslationAnnotationVisitor(translator, translatedDesc.getTypeEntry(), api, av);
         }
diff --git a/src/main/java/cuchaz/enigma/bytecode/translators/TranslationFieldVisitor.java b/src/main/java/cuchaz/enigma/bytecode/translators/TranslationFieldVisitor.java
index e4695fb..28fc199 100644
--- a/src/main/java/cuchaz/enigma/bytecode/translators/TranslationFieldVisitor.java
+++ b/src/main/java/cuchaz/enigma/bytecode/translators/TranslationFieldVisitor.java
@@ -1,8 +1,8 @@
 package cuchaz.enigma.bytecode.translators;
 
-import cuchaz.enigma.mapping.Translator;
-import cuchaz.enigma.mapping.TypeDescriptor;
-import cuchaz.enigma.mapping.entry.FieldDefEntry;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.representation.TypeDescriptor;
+import cuchaz.enigma.translation.representation.entry.FieldDefEntry;
 import org.objectweb.asm.AnnotationVisitor;
 import org.objectweb.asm.FieldVisitor;
 import org.objectweb.asm.TypePath;
@@ -19,14 +19,14 @@ public class TranslationFieldVisitor extends FieldVisitor {
 
         @Override
         public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
-                TypeDescriptor typeDesc = translator.getTranslatedTypeDesc(new TypeDescriptor(desc));
+                TypeDescriptor typeDesc = translator.translate(new TypeDescriptor(desc));
                 AnnotationVisitor av = super.visitAnnotation(typeDesc.toString(), visible);
                 return new TranslationAnnotationVisitor(translator, typeDesc.getTypeEntry(), api, av);
         }
 
         @Override
         public AnnotationVisitor visitTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) {
-                TypeDescriptor typeDesc = translator.getTranslatedTypeDesc(new TypeDescriptor(desc));
+                TypeDescriptor typeDesc = translator.translate(new TypeDescriptor(desc));
                 AnnotationVisitor av = super.visitAnnotation(typeDesc.toString(), visible);
                 return new TranslationAnnotationVisitor(translator, typeDesc.getTypeEntry(), api, av);
         }
diff --git a/src/main/java/cuchaz/enigma/bytecode/translators/TranslationMethodVisitor.java b/src/main/java/cuchaz/enigma/bytecode/translators/TranslationMethodVisitor.java
index 6d0d550..a5a33e6 100644
--- a/src/main/java/cuchaz/enigma/bytecode/translators/TranslationMethodVisitor.java
+++ b/src/main/java/cuchaz/enigma/bytecode/translators/TranslationMethodVisitor.java
@@ -1,7 +1,11 @@
 package cuchaz.enigma.bytecode.translators;
 
-import cuchaz.enigma.mapping.*;
-import cuchaz.enigma.mapping.entry.*;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.NameValidator;
+import cuchaz.enigma.translation.representation.MethodDescriptor;
+import cuchaz.enigma.translation.representation.Signature;
+import cuchaz.enigma.translation.representation.TypeDescriptor;
+import cuchaz.enigma.translation.representation.entry.*;
 import org.objectweb.asm.*;
 
 import java.util.Collection;
@@ -26,15 +30,15 @@ public class TranslationMethodVisitor extends MethodVisitor {
         @Override
         public void visitFieldInsn(int opcode, String owner, String name, String desc) {
                 FieldEntry entry = new FieldEntry(new ClassEntry(owner), name, new TypeDescriptor(desc));
-                FieldEntry translatedEntry = translator.getTranslatedField(entry);
-                super.visitFieldInsn(opcode, translatedEntry.getClassName(), translatedEntry.getName(), translatedEntry.getDesc().toString());
+                FieldEntry translatedEntry = translator.translate(entry);
+                super.visitFieldInsn(opcode, translatedEntry.getParent().getFullName(), translatedEntry.getName(), translatedEntry.getDesc().toString());
         }
 
         @Override
         public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) {
                 MethodEntry entry = new MethodEntry(new ClassEntry(owner), name, new MethodDescriptor(desc));
-                MethodEntry translatedEntry = translator.getTranslatedMethod(entry);
-                super.visitMethodInsn(opcode, translatedEntry.getClassName(), translatedEntry.getName(), translatedEntry.getDesc().toString(), itf);
+                MethodEntry translatedEntry = translator.translate(entry);
+                super.visitMethodInsn(opcode, translatedEntry.getParent().getFullName(), translatedEntry.getName(), translatedEntry.getDesc().toString(), itf);
         }
 
         @Override
@@ -52,7 +56,7 @@ public class TranslationMethodVisitor extends MethodVisitor {
                         Object object = array[i];
                         if (object instanceof String) {
                                 String type = (String) object;
-                                array[i] = translator.getTranslatedClass(new ClassEntry(type)).getName();
+                                array[i] = translator.translate(new ClassEntry(type)).getFullName();
                         }
                 }
                 return array;
@@ -60,21 +64,21 @@ public class TranslationMethodVisitor extends MethodVisitor {
 
         @Override
         public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
-                TypeDescriptor typeDesc = translator.getTranslatedTypeDesc(new TypeDescriptor(desc));
+                TypeDescriptor typeDesc = translator.translate(new TypeDescriptor(desc));
                 AnnotationVisitor av = super.visitAnnotation(typeDesc.toString(), visible);
                 return new TranslationAnnotationVisitor(translator, typeDesc.getTypeEntry(), api, av);
         }
 
         @Override
         public AnnotationVisitor visitParameterAnnotation(int parameter, String desc, boolean visible) {
-                TypeDescriptor typeDesc = translator.getTranslatedTypeDesc(new TypeDescriptor(desc));
+                TypeDescriptor typeDesc = translator.translate(new TypeDescriptor(desc));
                 AnnotationVisitor av = super.visitParameterAnnotation(parameter, typeDesc.toString(), visible);
                 return new TranslationAnnotationVisitor(translator, typeDesc.getTypeEntry(), api, av);
         }
 
         @Override
         public AnnotationVisitor visitTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) {
-                TypeDescriptor typeDesc = translator.getTranslatedTypeDesc(new TypeDescriptor(desc));
+                TypeDescriptor typeDesc = translator.translate(new TypeDescriptor(desc));
                 AnnotationVisitor av = super.visitTypeAnnotation(typeRef, typePath, typeDesc.toString(), visible);
                 return new TranslationAnnotationVisitor(translator, typeDesc.getTypeEntry(), api, av);
         }
@@ -83,19 +87,18 @@ public class TranslationMethodVisitor extends MethodVisitor {
         public void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index) {
                 hasParameterMeta = true;
 
-                String translatedSignature = translator.getTranslatedSignature(Signature.createTypedSignature(signature)).toString();
+                String translatedSignature = translator.translate(Signature.createTypedSignature(signature)).toString();
                 int argumentIndex = methodEntry.getArgumentIndex(ownerEntry, index);
 
                 if (argumentIndex >= 0) {
-                        LocalVariableDefEntry entry = new LocalVariableDefEntry(methodEntry, index, name, new TypeDescriptor(desc));
-                        LocalVariableDefEntry translatedEntry = translator.getTranslatedVariableDef(entry);
+                        LocalVariableDefEntry entry = new LocalVariableDefEntry(methodEntry, index, name, true, new TypeDescriptor(desc));
+                        LocalVariableDefEntry translatedEntry = translator.translate(entry);
                         String translatedName = translatedEntry.getName();
 
-                        // TODO: Better name inference
                         if (translatedName.equals(entry.getName())) {
                                 List<TypeDescriptor> arguments = methodEntry.getDesc().getArgumentDescs();
                                 List<TypeDescriptor> translatedArguments = arguments.stream()
-                                                .map(translator::getTranslatedTypeDesc)
+                                                .map(translator::translate)
                                                 .collect(Collectors.toList());
 
                                 boolean argument = argumentIndex < arguments.size();
@@ -109,42 +112,42 @@ public class TranslationMethodVisitor extends MethodVisitor {
                         super.visitLocalVariable(translatedName, translatedEntry.getDesc().toString(), translatedSignature, start, end, index);
                 } else {
                         // Handle "this" variable
-                        TypeDescriptor translatedDesc = translator.getTranslatedTypeDesc(new TypeDescriptor(desc));
+                        TypeDescriptor translatedDesc = translator.translate(new TypeDescriptor(desc));
                         super.visitLocalVariable(name, translatedDesc.toString(), translatedSignature, start, end, index);
                 }
         }
 
         @Override
         public void visitTypeInsn(int opcode, String type) {
-                ClassEntry translatedEntry = translator.getTranslatedClass(new ClassEntry(type));
-                super.visitTypeInsn(opcode, translatedEntry.getName());
+                ClassEntry translatedEntry = translator.translate(new ClassEntry(type));
+                super.visitTypeInsn(opcode, translatedEntry.getFullName());
         }
 
         @Override
         public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs) {
-                MethodDescriptor translatedMethodDesc = translator.getTranslatedMethodDesc(new MethodDescriptor(desc));
+                MethodDescriptor translatedMethodDesc = translator.translate(new MethodDescriptor(desc));
                 Object[] translatedBsmArgs = new Object[bsmArgs.length];
                 for (int i = 0; i < bsmArgs.length; i++) {
-                        translatedBsmArgs[i] = translator.getTranslatedValue(bsmArgs[i]);
+                        translatedBsmArgs[i] = AsmObjectTranslator.translateValue(translator, bsmArgs[i]);
                 }
-                super.visitInvokeDynamicInsn(name, translatedMethodDesc.toString(), translator.getTranslatedHandle(bsm), translatedBsmArgs);
+                super.visitInvokeDynamicInsn(name, translatedMethodDesc.toString(), AsmObjectTranslator.translateHandle(translator, bsm), translatedBsmArgs);
         }
 
         @Override
         public void visitLdcInsn(Object cst) {
-                super.visitLdcInsn(translator.getTranslatedValue(cst));
+                super.visitLdcInsn(AsmObjectTranslator.translateValue(translator, cst));
         }
 
         @Override
         public void visitMultiANewArrayInsn(String desc, int dims) {
-                super.visitMultiANewArrayInsn(translator.getTranslatedTypeDesc(new TypeDescriptor(desc)).toString(), dims);
+                super.visitMultiANewArrayInsn(translator.translate(new TypeDescriptor(desc)).toString(), dims);
         }
 
         @Override
         public void visitTryCatchBlock(Label start, Label end, Label handler, String type) {
                 if (type != null) {
-                        ClassEntry translatedEntry = translator.getTranslatedClass(new ClassEntry(type));
-                        super.visitTryCatchBlock(start, end, handler, translatedEntry.getName());
+                        ClassEntry translatedEntry = translator.translate(new ClassEntry(type));
+                        super.visitTryCatchBlock(start, end, handler, translatedEntry.getFullName());
                 } else {
                         super.visitTryCatchBlock(start, end, handler, type);
                 }
@@ -159,7 +162,7 @@ public class TranslationMethodVisitor extends MethodVisitor {
 
                         for (int argumentIndex = 0; argumentIndex < arguments.size(); argumentIndex++) {
                                 LocalVariableEntry entry = new LocalVariableEntry(methodEntry, offset, "", true);
-                                LocalVariableEntry translatedEntry = translator.getTranslatedVariable(entry);
+                                LocalVariableEntry translatedEntry = translator.translate(entry);
                                 String translatedName = translatedEntry.getName();
                                 if (translatedName.equals(entry.getName())) {
                                         super.visitParameter(inferArgumentName(argumentIndex, arguments.get(argumentIndex), arguments), 0);
diff --git a/src/main/java/cuchaz/enigma/gui/ClassSelector.java b/src/main/java/cuchaz/enigma/gui/ClassSelector.java
index 8863386..c3b7288 100644
--- a/src/main/java/cuchaz/enigma/gui/ClassSelector.java
+++ b/src/main/java/cuchaz/enigma/gui/ClassSelector.java
@@ -17,14 +17,13 @@ import com.google.common.collect.Maps;
 import com.google.common.collect.Multimap;
 import cuchaz.enigma.gui.node.ClassSelectorClassNode;
 import cuchaz.enigma.gui.node.ClassSelectorPackageNode;
-import cuchaz.enigma.mapping.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
 import cuchaz.enigma.throwables.IllegalNameException;
 
 import javax.swing.*;
 import javax.swing.event.CellEditorListener;
 import javax.swing.event.ChangeEvent;
 import javax.swing.tree.*;
-import java.awt.*;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.util.*;
@@ -32,7 +31,7 @@ import java.util.List;
 
 public class ClassSelector extends JTree {
 
-        public static final Comparator<ClassEntry> DEOBF_CLASS_COMPARATOR = Comparator.comparing(ClassEntry::getName);
+        public static final Comparator<ClassEntry> DEOBF_CLASS_COMPARATOR = Comparator.comparing(ClassEntry::getFullName);
         private DefaultMutableTreeNode rootNodes;
         private ClassSelectionListener selectionListener;
         private RenameSelectionListener renameSelectionListener;
diff --git a/src/main/java/cuchaz/enigma/gui/CodeReader.java b/src/main/java/cuchaz/enigma/gui/CodeReader.java
index 137c730..0810043 100644
--- a/src/main/java/cuchaz/enigma/gui/CodeReader.java
+++ b/src/main/java/cuchaz/enigma/gui/CodeReader.java
@@ -16,9 +16,8 @@ import cuchaz.enigma.Deobfuscator;
 import cuchaz.enigma.analysis.EntryReference;
 import cuchaz.enigma.analysis.SourceIndex;
 import cuchaz.enigma.analysis.Token;
-import cuchaz.enigma.gui.highlight.SelectionHighlightPainter;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.Entry;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.Entry;
 import de.sciss.syntaxpane.DefaultSyntaxKit;
 
 import javax.swing.*;
@@ -33,7 +32,6 @@ public class CodeReader extends JEditorPane {
         private static final long serialVersionUID = 3673180950485748810L;
 
         private static final Object lock = new Object();
-        private SelectionHighlightPainter selectionHighlightPainter;
         private SourceIndex sourceIndex;
         private SelectionListener selectionListener;
 
@@ -58,8 +56,6 @@ public class CodeReader extends JEditorPane {
                                 }
                         }
                 });
-
-                selectionHighlightPainter = new SelectionHighlightPainter();
         }
 
         // HACKHACK: someday we can update the main GUI to use this code reader
@@ -144,7 +140,7 @@ public class CodeReader extends JEditorPane {
 
                         // decompile it
 
-                        CompilationUnit sourceTree = deobfuscator.getSourceTree(classEntry.getOutermostClassName());
+                        CompilationUnit sourceTree = deobfuscator.getSourceTree(classEntry.getName());
                         String source = deobfuscator.getSource(sourceTree);
                         setCode(source);
                         sourceIndex = deobfuscator.getSourceIndex(sourceTree, source, ignoreBadTokens);
@@ -155,52 +151,7 @@ public class CodeReader extends JEditorPane {
                 }).start();
         }
 
-        public void navigateToClassDeclaration(ClassEntry classEntry) {
-
-                // navigate to the class declaration
-                Token token = sourceIndex.getDeclarationToken(classEntry);
-                if (token == null) {
-                        // couldn't find the class declaration token, might be an anonymous class
-                        // look for any declaration in that class instead
-                        for (Entry entry : sourceIndex.declarations()) {
-                                if (entry.getOwnerClassEntry().equals(classEntry)) {
-                                        token = sourceIndex.getDeclarationToken(entry);
-                                        break;
-                                }
-                        }
-                }
-
-                if (token != null) {
-                        navigateToToken(token);
-                } else {
-                        // couldn't find anything =(
-                        System.out.println("Unable to find declaration in source for " + classEntry);
-                }
-        }
-
-        public void navigateToToken(final Token token) {
-                navigateToToken(this, token, selectionHighlightPainter);
-        }
-
-        public void setHighlightedTokens(Iterable<Token> tokens, HighlightPainter painter) {
-                for (Token token : tokens) {
-                        setHighlightedToken(token, painter);
-                }
-        }
-
-        public void setHighlightedToken(Token token, HighlightPainter painter) {
-                try {
-                        getHighlighter().addHighlight(token.start, token.end, painter);
-                } catch (BadLocationException ex) {
-                        throw new IllegalArgumentException(ex);
-                }
-        }
-
-        public void clearHighlights() {
-                getHighlighter().removeAllHighlights();
-        }
-
         public interface SelectionListener {
-                void onSelect(EntryReference<Entry, Entry> reference);
+                void onSelect(EntryReference<Entry<?>, Entry<?>> reference);
         }
 }
diff --git a/src/main/java/cuchaz/enigma/gui/Gui.java b/src/main/java/cuchaz/enigma/gui/Gui.java
index 53500aa..d119735 100644
--- a/src/main/java/cuchaz/enigma/gui/Gui.java
+++ b/src/main/java/cuchaz/enigma/gui/Gui.java
@@ -29,9 +29,9 @@ import cuchaz.enigma.gui.panels.PanelDeobf;
 import cuchaz.enigma.gui.panels.PanelEditor;
 import cuchaz.enigma.gui.panels.PanelIdentifier;
 import cuchaz.enigma.gui.panels.PanelObf;
-import cuchaz.enigma.mapping.*;
-import cuchaz.enigma.mapping.entry.*;
 import cuchaz.enigma.throwables.IllegalNameException;
+import cuchaz.enigma.translation.mapping.AccessModifier;
+import cuchaz.enigma.translation.representation.entry.*;
 import cuchaz.enigma.utils.Utils;
 import de.sciss.syntaxpane.DefaultSyntaxKit;
 
@@ -44,8 +44,8 @@ import javax.swing.tree.TreeNode;
 import javax.swing.tree.TreePath;
 import java.awt.*;
 import java.awt.event.*;
-import java.io.File;
 import java.io.IOException;
+import java.nio.file.Path;
 import java.util.*;
 import java.util.List;
 import java.util.function.Function;
@@ -58,7 +58,7 @@ public class Gui {
 
         private final MenuBar menuBar;
         // state
-        public EntryReference<Entry, Entry> reference;
+        public EntryReference<Entry<?>, Entry<?>> reference;
         public FileDialog jarFileChooser;
         public FileDialog tinyMappingsFileChooser;
         public JFileChooser enigmaMappingsFileChooser;
@@ -222,7 +222,7 @@ public class Gui {
 
                                         Object node = path.getLastPathComponent();
                                         if (node instanceof ReferenceTreeNode) {
-                                                ReferenceTreeNode<Entry, Entry> referenceNode = ((ReferenceTreeNode<Entry, Entry>) node);
+                                                ReferenceTreeNode<Entry<?>, Entry<?>> referenceNode = ((ReferenceTreeNode<Entry<?>, Entry<?>>) node);
                                                 if (referenceNode.getReference() != null) {
                                                         navigateTo(referenceNode.getReference());
                                                 } else {
@@ -250,10 +250,10 @@ public class Gui {
                 tokens.setPreferredSize(new Dimension(0, 200));
                 tokens.setMinimumSize(new Dimension(0, 200));
                 JSplitPane callPanel = new JSplitPane(
-                        JSplitPane.VERTICAL_SPLIT,
-                        true,
-                        new JScrollPane(callsTree),
-                        new JScrollPane(tokens)
+                                JSplitPane.VERTICAL_SPLIT,
+                                true,
+                                new JScrollPane(callsTree),
+                                new JScrollPane(tokens)
                 );
                 callPanel.setResizeWeight(1); // let the top side take all the slack
                 callPanel.resetToPreferredSizes();
@@ -368,9 +368,9 @@ public class Gui {
                 this.deobfPanel.deobfClasses.setClasses(deobfClasses);
         }
 
-        public void setMappingsFile(File file) {
-                this.enigmaMappingsFileChooser.setSelectedFile(file);
-                this.menuBar.saveMappingsMenu.setEnabled(file != null);
+        public void setMappingsFile(Path path) {
+                this.enigmaMappingsFileChooser.setSelectedFile(path != null ? path.toFile() : null);
+                this.menuBar.saveMappingsMenu.setEnabled(path != null);
         }
 
         public void setSource(String source) {
@@ -427,7 +427,7 @@ public class Gui {
                 }
         }
 
-        private void showReference(EntryReference<Entry, Entry> reference) {
+        private void showReference(EntryReference<Entry<?>, Entry<?>> reference) {
                 if (reference == null) {
                         infoPanel.clearReference();
                         return;
@@ -453,29 +453,29 @@ public class Gui {
 
         private void showLocalVariableEntry(LocalVariableEntry entry) {
                 addNameValue(infoPanel, "Variable", entry.getName());
-                addNameValue(infoPanel, "Class", entry.getOwnerClassEntry().getName());
-                addNameValue(infoPanel, "Method", entry.getOwnerEntry().getName());
+                addNameValue(infoPanel, "Class", entry.getContainingClass().getFullName());
+                addNameValue(infoPanel, "Method", entry.getParent().getName());
                 addNameValue(infoPanel, "Index", Integer.toString(entry.getIndex()));
         }
 
         private void showClassEntry(ClassEntry entry) {
-                addNameValue(infoPanel, "Class", entry.getName());
+                addNameValue(infoPanel, "Class", entry.getFullName());
                 addModifierComboBox(infoPanel, "Modifier", entry);
         }
 
         private void showFieldEntry(FieldEntry entry) {
                 addNameValue(infoPanel, "Field", entry.getName());
-                addNameValue(infoPanel, "Class", entry.getOwnerClassEntry().getName());
+                addNameValue(infoPanel, "Class", entry.getParent().getFullName());
                 addNameValue(infoPanel, "TypeDescriptor", entry.getDesc().toString());
                 addModifierComboBox(infoPanel, "Modifier", entry);
         }
 
         private void showMethodEntry(MethodEntry entry) {
                 if (entry.isConstructor()) {
-                        addNameValue(infoPanel, "Constructor", entry.getOwnerClassEntry().getName());
+                        addNameValue(infoPanel, "Constructor", entry.getParent().getFullName());
                 } else {
                         addNameValue(infoPanel, "Method", entry.getName());
-                        addNameValue(infoPanel, "Class", entry.getOwnerClassEntry().getName());
+                        addNameValue(infoPanel, "Class", entry.getParent().getFullName());
                 }
                 addNameValue(infoPanel, "MethodDescriptor", entry.getDesc().toString());
                 addModifierComboBox(infoPanel, "Modifier", entry);
@@ -494,7 +494,7 @@ public class Gui {
                 container.add(panel);
         }
 
-        private JComboBox<Mappings.EntryModifier> addModifierComboBox(JPanel container, String name, Entry entry) {
+        private JComboBox<AccessModifier> addModifierComboBox(JPanel container, String name, Entry entry) {
                 if (!getController().entryIsInJar(entry))
                         return null;
                 JPanel panel = new JPanel();
@@ -502,7 +502,7 @@ public class Gui {
                 JLabel label = new JLabel(name + ":", JLabel.RIGHT);
                 label.setPreferredSize(new Dimension(100, label.getPreferredSize().height));
                 panel.add(label);
-                JComboBox<Mappings.EntryModifier> combo = new JComboBox<>(Mappings.EntryModifier.values());
+                JComboBox<AccessModifier> combo = new JComboBox<>(AccessModifier.values());
                 ((JLabel) combo.getRenderer()).setHorizontalAlignment(JLabel.LEFT);
                 combo.setPreferredSize(new Dimension(100, label.getPreferredSize().height));
                 combo.setSelectedIndex(getController().getDeobfuscator().getModifier(entry).ordinal());
@@ -520,11 +520,13 @@ public class Gui {
                 boolean isToken = token != null;
 
                 reference = this.controller.getDeobfReference(token);
-                boolean isClassEntry = isToken && reference.entry instanceof ClassEntry;
-                boolean isFieldEntry = isToken && reference.entry instanceof FieldEntry;
-                boolean isMethodEntry = isToken && reference.entry instanceof MethodEntry && !((MethodEntry) reference.entry).isConstructor();
-                boolean isConstructorEntry = isToken && reference.entry instanceof MethodEntry && ((MethodEntry) reference.entry).isConstructor();
-                boolean isInJar = isToken && this.controller.entryIsInJar(reference.entry);
+
+                Entry<?> referenceEntry = reference != null ? reference.entry : null;
+                boolean isClassEntry = isToken && referenceEntry instanceof ClassEntry;
+                boolean isFieldEntry = isToken && referenceEntry instanceof FieldEntry;
+                boolean isMethodEntry = isToken && referenceEntry instanceof MethodEntry && !((MethodEntry) referenceEntry).isConstructor();
+                boolean isConstructorEntry = isToken && referenceEntry instanceof MethodEntry && ((MethodEntry) referenceEntry).isConstructor();
+                boolean isInJar = isToken && this.controller.entryIsInJar(referenceEntry);
                 boolean isRenameable = isToken && this.controller.referenceIsRenameable(reference);
 
                 if (isToken) {
@@ -542,14 +544,14 @@ public class Gui {
                 this.popupMenu.openPreviousMenu.setEnabled(this.controller.hasPreviousLocation());
                 this.popupMenu.toggleMappingMenu.setEnabled(isRenameable);
 
-                if (isToken && this.controller.entryHasDeobfuscatedName(reference.entry)) {
+                if (isToken && this.controller.entryHasDeobfuscatedName(referenceEntry)) {
                         this.popupMenu.toggleMappingMenu.setText("Reset to obfuscated");
                 } else {
                         this.popupMenu.toggleMappingMenu.setText("Mark as deobfuscated");
                 }
         }
 
-        public void navigateTo(Entry entry) {
+        public void navigateTo(Entry<?> entry) {
                 if (!this.controller.entryIsInJar(entry)) {
                         // entry is not in the jar. Ignore it
                         return;
@@ -560,7 +562,7 @@ public class Gui {
                 this.controller.openDeclaration(entry);
         }
 
-        private void navigateTo(EntryReference<Entry, Entry> reference) {
+        private void navigateTo(EntryReference<Entry<?>, Entry<?>> reference) {
                 if (!this.controller.entryIsInJar(reference.getLocationClassEntry())) {
                         return;
                 }
@@ -613,7 +615,7 @@ public class Gui {
                 String newName = text.getText();
                 if (saveName && newName != null && !newName.isEmpty()) {
                         try {
-                                this.controller.rename(reference, newName);
+                                this.controller.rename(reference, newName, true);
                         } catch (IllegalNameException ex) {
                                 text.setBorder(BorderFactory.createLineBorder(Color.red, 1));
                                 text.setToolTipText(ex.getReason());
@@ -737,13 +739,13 @@ public class Gui {
 
         public void showDiscardDiag(Function<Integer, Void> callback, String... options) {
                 int response = JOptionPane.showOptionDialog(this.frame, "Your mappings have not been saved yet. Do you want to save?", "Save your changes?", JOptionPane.YES_NO_CANCEL_OPTION,
-                        JOptionPane.QUESTION_MESSAGE, null, options, options[2]);
+                                JOptionPane.QUESTION_MESSAGE, null, options, options[2]);
                 callback.apply(response);
         }
 
         public void saveMapping() throws IOException {
                 if (this.enigmaMappingsFileChooser.getSelectedFile() != null || this.enigmaMappingsFileChooser.showSaveDialog(this.frame) == JFileChooser.APPROVE_OPTION)
-                        this.controller.saveMappings(this.enigmaMappingsFileChooser.getSelectedFile());
+                        this.controller.saveMappings(this.enigmaMappingsFileChooser.getSelectedFile().toPath());
         }
 
         public void close() {
@@ -782,7 +784,7 @@ public class Gui {
                                 DefaultMutableTreeNode childNode = (DefaultMutableTreeNode) node.getChildAt(i);
                                 ClassEntry prevDataChild = (ClassEntry) childNode.getUserObject();
                                 ClassEntry dataChild = new ClassEntry(data + "/" + prevDataChild.getSimpleName());
-                                this.controller.rename(new EntryReference<>(prevDataChild, prevDataChild.getName()), dataChild.getName(), false, i + 1 == node.getChildCount());
+                                this.controller.rename(new EntryReference<>(prevDataChild, prevDataChild.getFullName()), dataChild.getFullName(), false);
                                 childNode.setUserObject(dataChild);
                         }
                         node.setUserObject(data);
@@ -791,19 +793,19 @@ public class Gui {
                 }
                 // class rename
                 else if (data instanceof ClassEntry)
-                        this.controller.rename(new EntryReference<>((ClassEntry) prevData, ((ClassEntry) prevData).getName()), ((ClassEntry) data).getName(), false, true);
+                        this.controller.rename(new EntryReference<>((ClassEntry) prevData, ((ClassEntry) prevData).getFullName()), ((ClassEntry) data).getFullName(), false);
         }
 
-        public void moveClassTree(EntryReference<Entry, Entry> deobfReference, String newName) {
-                String oldEntry = deobfReference.entry.getOwnerClassEntry().getPackageName();
+        public void moveClassTree(EntryReference<Entry<?>, Entry<?>> deobfReference, String newName) {
+                String oldEntry = deobfReference.entry.getContainingClass().getPackageName();
                 String newEntry = new ClassEntry(newName).getPackageName();
                 moveClassTree(deobfReference, newName, oldEntry == null,
-                        newEntry == null);
+                                newEntry == null);
         }
 
         // TODO: getExpansionState will *not* actually update itself based on name changes!
-        public void moveClassTree(EntryReference<Entry, Entry> deobfReference, String newName, boolean isOldOb, boolean isNewOb) {
-                ClassEntry oldEntry = deobfReference.entry.getOwnerClassEntry();
+        public void moveClassTree(EntryReference<Entry<?>, Entry<?>> deobfReference, String newName, boolean isOldOb, boolean isNewOb) {
+                ClassEntry oldEntry = deobfReference.entry.getContainingClass();
                 ClassEntry newEntry = new ClassEntry(newName);
 
                 // Ob -> deob
diff --git a/src/main/java/cuchaz/enigma/gui/GuiController.java b/src/main/java/cuchaz/enigma/gui/GuiController.java
index 69aefe5..06cb33e 100644
--- a/src/main/java/cuchaz/enigma/gui/GuiController.java
+++ b/src/main/java/cuchaz/enigma/gui/GuiController.java
@@ -20,19 +20,25 @@ import cuchaz.enigma.analysis.*;
 import cuchaz.enigma.api.EnigmaPlugin;
 import cuchaz.enigma.config.Config;
 import cuchaz.enigma.gui.dialog.ProgressDialog;
-import cuchaz.enigma.mapping.*;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.Entry;
-import cuchaz.enigma.mapping.entry.FieldEntry;
-import cuchaz.enigma.mapping.entry.MethodEntry;
 import cuchaz.enigma.throwables.MappingParseException;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.*;
+import cuchaz.enigma.translation.mapping.serde.MappingFormat;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.Entry;
+import cuchaz.enigma.translation.representation.entry.FieldEntry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
 import cuchaz.enigma.utils.ReadableToken;
 
+import javax.annotation.Nullable;
 import java.awt.event.ItemEvent;
 import java.io.File;
 import java.io.IOException;
+import java.nio.file.Path;
 import java.util.*;
 import java.util.jar.JarFile;
+import java.util.stream.Collectors;
 
 public class GuiController {
 
@@ -40,27 +46,26 @@ public class GuiController {
         private Gui gui;
         private SourceIndex index;
         private ClassEntry currentObfClass;
-        private boolean isDirty;
-        private Deque<EntryReference<Entry, Entry>> referenceStack;
+        private Deque<EntryReference<Entry<?>, Entry<?>>> referenceStack;
+
+        private Path loadedMappingPath;
+        private MappingFormat loadedMappingFormat;
 
         public GuiController(Gui gui) {
                 this.gui = gui;
                 this.deobfuscator = null;
                 this.index = null;
                 this.currentObfClass = null;
-                this.isDirty = false;
                 this.referenceStack = Queues.newArrayDeque();
         }
 
         public boolean isDirty() {
-                return this.isDirty;
+                return deobfuscator.getMapper().isDirty();
         }
 
         public void openJar(final JarFile jar) throws IOException {
                 this.gui.onStartOpenJar("Loading JAR...");
-                this.deobfuscator = new Deobfuscator(jar, (msg) -> {
-                        this.gui.onStartOpenJar(msg);
-                });
+                this.deobfuscator = new Deobfuscator(jar, this.gui::onStartOpenJar);
                 this.gui.onFinishOpenJar(jar.getName());
                 refreshClasses();
         }
@@ -70,43 +75,37 @@ public class GuiController {
                 this.gui.onCloseJar();
         }
 
-        public void openEnigmaMappings(File file) throws IOException, MappingParseException {
-                this.deobfuscator.setMappings(new MappingsEnigmaReader().read(file));
-                this.isDirty = false;
-                this.gui.setMappingsFile(file);
+        public void openMappings(MappingFormat format, Path path) throws IOException, MappingParseException {
+                EntryTree<EntryMapping> mappings = format.read(path);
+                deobfuscator.setMappings(mappings);
+
+                gui.setMappingsFile(path);
+                loadedMappingFormat = format;
+
                 refreshClasses();
                 refreshCurrentClass();
         }
 
-        public void openTinyMappings(File file) throws IOException, MappingParseException {
-                this.deobfuscator.setMappings(new MappingsTinyReader().read(file));
-                this.isDirty = false;
-                this.gui.setMappingsFile(file);
-                refreshClasses();
-                refreshCurrentClass();
+        public void saveMappings(Path path) {
+                saveMappings(loadedMappingFormat, path);
         }
 
-        public void saveMappings(File file) throws IOException {
-                Mappings mappings = this.deobfuscator.getMappings();
-                switch (mappings.getOriginMappingFormat()) {
-                        case SRG_FILE:
-                                saveSRGMappings(file);
-                                break;
-                        default:
-                                saveEnigmaMappings(file, Mappings.FormatType.ENIGMA_FILE != mappings.getOriginMappingFormat());
-                                break;
-                }
+        public void saveMappings(MappingFormat format, Path path) {
+                EntryRemapper mapper = deobfuscator.getMapper();
 
-        }
+                MappingDelta delta = mapper.takeMappingDelta();
+                boolean saveAll = !path.equals(loadedMappingPath);
 
-        public void saveEnigmaMappings(File file, boolean isDirectoryFormat) throws IOException {
-                this.deobfuscator.getMappings().saveEnigmaMappings(file, isDirectoryFormat);
-                this.isDirty = false;
-        }
+                ProgressDialog.runInThread(this.gui.getFrame(), progress -> {
+                        if (saveAll) {
+                                format.write(mapper.getObfToDeobf(), path, progress);
+                        } else {
+                                format.write(mapper.getObfToDeobf(), delta, path, progress);
+                        }
+                });
 
-        public void saveSRGMappings(File file) throws IOException {
-                this.deobfuscator.getMappings().saveSRGMappings(file);
-                this.isDirty = false;
+                loadedMappingFormat = format;
+                loadedMappingPath = path;
         }
 
         public void closeMappings() {
@@ -116,11 +115,6 @@ public class GuiController {
                 refreshCurrentClass();
         }
 
-        public void rebuildMethodNames() {
-                ProgressDialog.runInThread(this.gui.getFrame(), progress -> this.deobfuscator.rebuildMethodNames(progress));
-                this.isDirty = true;
-        }
-
         public void exportSource(final File dirOut) {
                 ProgressDialog.runInThread(this.gui.getFrame(), progress -> this.deobfuscator.writeSources(dirOut, progress));
         }
@@ -136,7 +130,8 @@ public class GuiController {
                 return this.index.getReferenceToken(pos);
         }
 
-        public EntryReference<Entry, Entry> getDeobfReference(Token token) {
+        @Nullable
+        public EntryReference<Entry<?>, Entry<?>> getDeobfReference(Token token) {
                 if (this.index == null) {
                         return null;
                 }
@@ -148,44 +143,52 @@ public class GuiController {
                         return null;
                 }
                 return new ReadableToken(
-                        this.index.getLineNumber(token.start),
-                        this.index.getColumnNumber(token.start),
-                        this.index.getColumnNumber(token.end)
+                                this.index.getLineNumber(token.start),
+                                this.index.getColumnNumber(token.start),
+                                this.index.getColumnNumber(token.end)
                 );
         }
 
-        public boolean entryHasDeobfuscatedName(Entry deobfEntry) {
-                return this.deobfuscator.hasDeobfuscatedName(this.deobfuscator.obfuscateEntry(deobfEntry));
+        public boolean entryHasDeobfuscatedName(Entry<?> deobfEntry) {
+                EntryResolver resolver = this.deobfuscator.getMapper().getDeobfResolver();
+                Entry<?> resolvedEntry = resolver.resolveFirstEntry(deobfEntry, ResolutionStrategy.RESOLVE_ROOT);
+                return this.deobfuscator.hasDeobfuscatedName(this.deobfuscator.getMapper().obfuscate(resolvedEntry));
         }
 
-        public boolean entryIsInJar(Entry deobfEntry) {
-                return this.deobfuscator.isObfuscatedIdentifier(this.deobfuscator.obfuscateEntry(deobfEntry));
+        public boolean entryIsInJar(Entry<?> deobfEntry) {
+                if (deobfEntry == null) return false;
+                return this.deobfuscator.isObfuscatedIdentifier(this.deobfuscator.getMapper().obfuscate(deobfEntry));
         }
 
-        public boolean referenceIsRenameable(EntryReference<Entry, Entry> deobfReference) {
-                return this.deobfuscator.isRenameable(this.deobfuscator.obfuscateReference(deobfReference));
+        public boolean referenceIsRenameable(EntryReference<Entry<?>, Entry<?>> deobfReference) {
+                if (deobfReference == null) return false;
+                return this.deobfuscator.isRenameable(this.deobfuscator.getMapper().obfuscate(deobfReference));
         }
 
         public ClassInheritanceTreeNode getClassInheritance(ClassEntry deobfClassEntry) {
-                ClassEntry obfClassEntry = this.deobfuscator.obfuscateEntry(deobfClassEntry);
-                ClassInheritanceTreeNode rootNode = this.deobfuscator.getJarIndex().getClassInheritance(this.deobfuscator.getTranslator(TranslationDirection.DEOBFUSCATING), obfClassEntry);
+                ClassEntry obfClassEntry = this.deobfuscator.getMapper().obfuscate(deobfClassEntry);
+                Translator translator = this.deobfuscator.getMapper().getDeobfuscator();
+                ClassInheritanceTreeNode rootNode = this.deobfuscator.getIndexTreeBuilder().buildClassInheritance(translator, obfClassEntry);
                 return ClassInheritanceTreeNode.findNode(rootNode, obfClassEntry);
         }
 
         public ClassImplementationsTreeNode getClassImplementations(ClassEntry deobfClassEntry) {
-                ClassEntry obfClassEntry = this.deobfuscator.obfuscateEntry(deobfClassEntry);
-                return this.deobfuscator.getJarIndex().getClassImplementations(this.deobfuscator.getTranslator(TranslationDirection.DEOBFUSCATING), obfClassEntry);
+                ClassEntry obfClassEntry = this.deobfuscator.getMapper().obfuscate(deobfClassEntry);
+                Translator translator = this.deobfuscator.getMapper().getDeobfuscator();
+                return this.deobfuscator.getIndexTreeBuilder().buildClassImplementations(translator, obfClassEntry);
         }
 
         public MethodInheritanceTreeNode getMethodInheritance(MethodEntry deobfMethodEntry) {
-                MethodEntry obfMethodEntry = this.deobfuscator.obfuscateEntry(deobfMethodEntry);
-                MethodInheritanceTreeNode rootNode = this.deobfuscator.getJarIndex().getMethodInheritance(this.deobfuscator.getTranslator(TranslationDirection.DEOBFUSCATING), obfMethodEntry);
+                MethodEntry obfMethodEntry = this.deobfuscator.getMapper().obfuscate(deobfMethodEntry);
+                Translator translator = this.deobfuscator.getMapper().getDeobfuscator();
+                MethodInheritanceTreeNode rootNode = this.deobfuscator.getIndexTreeBuilder().buildMethodInheritance(translator, obfMethodEntry);
                 return MethodInheritanceTreeNode.findNode(rootNode, obfMethodEntry);
         }
 
         public MethodImplementationsTreeNode getMethodImplementations(MethodEntry deobfMethodEntry) {
-                MethodEntry obfMethodEntry = this.deobfuscator.obfuscateEntry(deobfMethodEntry);
-                List<MethodImplementationsTreeNode> rootNodes = this.deobfuscator.getJarIndex().getMethodImplementations(this.deobfuscator.getTranslator(TranslationDirection.DEOBFUSCATING), obfMethodEntry);
+                MethodEntry obfMethodEntry = this.deobfuscator.getMapper().obfuscate(deobfMethodEntry);
+                Translator translator = this.deobfuscator.getMapper().getDeobfuscator();
+                List<MethodImplementationsTreeNode> rootNodes = this.deobfuscator.getIndexTreeBuilder().buildMethodImplementations(translator, obfMethodEntry);
                 if (rootNodes.isEmpty()) {
                         return null;
                 }
@@ -196,34 +199,32 @@ public class GuiController {
         }
 
         public ClassReferenceTreeNode getClassReferences(ClassEntry deobfClassEntry) {
-                ClassEntry obfClassEntry = this.deobfuscator.obfuscateEntry(deobfClassEntry);
-                ClassReferenceTreeNode rootNode = new ClassReferenceTreeNode(this.deobfuscator.getTranslator(TranslationDirection.DEOBFUSCATING), obfClassEntry);
+                ClassEntry obfClassEntry = this.deobfuscator.getMapper().obfuscate(deobfClassEntry);
+                Translator deobfuscator = this.deobfuscator.getMapper().getDeobfuscator();
+                ClassReferenceTreeNode rootNode = new ClassReferenceTreeNode(deobfuscator, obfClassEntry);
                 rootNode.load(this.deobfuscator.getJarIndex(), true);
                 return rootNode;
         }
 
         public FieldReferenceTreeNode getFieldReferences(FieldEntry deobfFieldEntry) {
-                FieldEntry obfFieldEntry = this.deobfuscator.obfuscateEntry(deobfFieldEntry);
-                FieldReferenceTreeNode rootNode = new FieldReferenceTreeNode(this.deobfuscator.getTranslator(TranslationDirection.DEOBFUSCATING), obfFieldEntry);
+                FieldEntry obfFieldEntry = this.deobfuscator.getMapper().obfuscate(deobfFieldEntry);
+                Translator translator = this.deobfuscator.getMapper().getDeobfuscator();
+                FieldReferenceTreeNode rootNode = new FieldReferenceTreeNode(translator, obfFieldEntry);
                 rootNode.load(this.deobfuscator.getJarIndex(), true);
                 return rootNode;
         }
 
         public MethodReferenceTreeNode getMethodReferences(MethodEntry deobfMethodEntry, boolean recursive) {
-                MethodEntry obfMethodEntry = this.deobfuscator.obfuscateEntry(deobfMethodEntry);
-                MethodReferenceTreeNode rootNode = new MethodReferenceTreeNode(this.deobfuscator.getTranslator(TranslationDirection.DEOBFUSCATING), obfMethodEntry);
+                MethodEntry obfMethodEntry = this.deobfuscator.getMapper().obfuscate(deobfMethodEntry);
+                Translator translator = this.deobfuscator.getMapper().getDeobfuscator();
+                MethodReferenceTreeNode rootNode = new MethodReferenceTreeNode(translator, obfMethodEntry);
                 rootNode.load(this.deobfuscator.getJarIndex(), true, recursive);
                 return rootNode;
         }
 
-        public void rename(EntryReference<Entry, Entry> deobfReference, String newName) {
-                rename(deobfReference, newName, true, true);
-        }
-
-        public void rename(EntryReference<Entry, Entry> deobfReference, String newName, boolean refreshClassTree, boolean clearTranslationCache) {
-                EntryReference<Entry, Entry> obfReference = this.deobfuscator.obfuscateReference(deobfReference);
-                this.deobfuscator.rename(obfReference.getNameableEntry(), newName, clearTranslationCache);
-                this.isDirty = true;
+        public void rename(EntryReference<Entry<?>, Entry<?>> deobfReference, String newName, boolean refreshClassTree) {
+                EntryReference<Entry<?>, Entry<?>> obfReference = this.deobfuscator.getMapper().obfuscate(deobfReference);
+                this.deobfuscator.rename(obfReference.getNameableEntry(), newName);
 
                 if (refreshClassTree && deobfReference.entry instanceof ClassEntry && !((ClassEntry) deobfReference.entry).isInnerClass())
                         this.gui.moveClassTree(deobfReference, newName);
@@ -231,39 +232,37 @@ public class GuiController {
 
         }
 
-        public void removeMapping(EntryReference<Entry, Entry> deobfReference) {
-                EntryReference<Entry, Entry> obfReference = this.deobfuscator.obfuscateReference(deobfReference);
+        public void removeMapping(EntryReference<Entry<?>, Entry<?>> deobfReference) {
+                EntryReference<Entry<?>, Entry<?>> obfReference = this.deobfuscator.getMapper().obfuscate(deobfReference);
                 this.deobfuscator.removeMapping(obfReference.getNameableEntry());
-                this.isDirty = true;
                 if (deobfReference.entry instanceof ClassEntry)
                         this.gui.moveClassTree(deobfReference, obfReference.entry.getName(), false, true);
                 refreshCurrentClass(obfReference);
         }
 
-        public void markAsDeobfuscated(EntryReference<Entry, Entry> deobfReference) {
-                EntryReference<Entry, Entry> obfReference = this.deobfuscator.obfuscateReference(deobfReference);
+        public void markAsDeobfuscated(EntryReference<Entry<?>, Entry<?>> deobfReference) {
+                EntryReference<Entry<?>, Entry<?>> obfReference = this.deobfuscator.getMapper().obfuscate(deobfReference);
                 this.deobfuscator.markAsDeobfuscated(obfReference.getNameableEntry());
-                this.isDirty = true;
                 if (deobfReference.entry instanceof ClassEntry && !((ClassEntry) deobfReference.entry).isInnerClass())
                         this.gui.moveClassTree(deobfReference, obfReference.entry.getName(), true, false);
                 refreshCurrentClass(obfReference);
         }
 
-        public void openDeclaration(Entry deobfEntry) {
+        public void openDeclaration(Entry<?> deobfEntry) {
                 if (deobfEntry == null) {
                         throw new IllegalArgumentException("Entry cannot be null!");
                 }
                 openReference(new EntryReference<>(deobfEntry, deobfEntry.getName()));
         }
 
-        public void openReference(EntryReference<Entry, Entry> deobfReference) {
+        public void openReference(EntryReference<Entry<?>, Entry<?>> deobfReference) {
                 if (deobfReference == null) {
                         throw new IllegalArgumentException("Reference cannot be null!");
                 }
 
                 // get the reference target class
-                EntryReference<Entry, Entry> obfReference = this.deobfuscator.obfuscateReference(deobfReference);
-                ClassEntry obfClassEntry = obfReference.getLocationClassEntry().getOutermostClassEntry();
+                EntryReference<Entry<?>, Entry<?>> obfReference = this.deobfuscator.getMapper().obfuscate(deobfReference);
+                ClassEntry obfClassEntry = obfReference.getLocationClassEntry();
                 if (!this.deobfuscator.isObfuscatedIdentifier(obfClassEntry)) {
                         throw new IllegalArgumentException("Obfuscated class " + obfClassEntry + " was not found in the jar!");
                 }
@@ -276,24 +275,30 @@ public class GuiController {
                 }
         }
 
-        private void showReference(EntryReference<Entry, Entry> obfReference) {
-                EntryReference<Entry, Entry> deobfReference = this.deobfuscator.deobfuscateReference(obfReference);
-                Collection<Token> tokens = this.index.getReferenceTokens(deobfReference);
+        private void showReference(EntryReference<Entry<?>, Entry<?>> obfReference) {
+                EntryRemapper mapper = this.deobfuscator.getMapper();
+
+                Collection<Token> tokens = mapper.getObfResolver().resolveReference(obfReference, ResolutionStrategy.RESOLVE_ROOT)
+                                .stream()
+                                .map(mapper::deobfuscate)
+                                .flatMap(reference -> index.getReferenceTokens(reference).stream())
+                                .collect(Collectors.toList());
+
                 if (tokens.isEmpty()) {
                         // DEBUG
-                        System.err.println(String.format("WARNING: no tokens found for %s in %s", deobfReference, this.currentObfClass));
+                        System.err.println(String.format("WARNING: no tokens found for %s in %s", tokens, this.currentObfClass));
                 } else {
                         this.gui.showTokens(tokens);
                 }
         }
 
-        public void savePreviousReference(EntryReference<Entry, Entry> deobfReference) {
-                this.referenceStack.push(this.deobfuscator.obfuscateReference(deobfReference));
+        public void savePreviousReference(EntryReference<Entry<?>, Entry<?>> deobfReference) {
+                this.referenceStack.push(this.deobfuscator.getMapper().obfuscate(deobfReference));
         }
 
         public void openPreviousReference() {
                 if (hasPreviousLocation()) {
-                        openReference(this.deobfuscator.deobfuscateReference(this.referenceStack.pop()));
+                        openReference(this.deobfuscator.getMapper().deobfuscate(this.referenceStack.pop()));
                 }
         }
 
@@ -313,13 +318,13 @@ public class GuiController {
                 refreshCurrentClass(null);
         }
 
-        private void refreshCurrentClass(EntryReference<Entry, Entry> obfReference) {
+        private void refreshCurrentClass(EntryReference<Entry<?>, Entry<?>> obfReference) {
                 if (this.currentObfClass != null) {
                         deobfuscate(this.currentObfClass, obfReference);
                 }
         }
 
-        private void deobfuscate(final ClassEntry classEntry, final EntryReference<Entry, Entry> obfReference) {
+        private void deobfuscate(final ClassEntry classEntry, final EntryReference<Entry<?>, Entry<?>> obfReference) {
 
                 this.gui.setSource("(deobfuscating...)");
 
@@ -327,7 +332,7 @@ public class GuiController {
                 new Thread(() ->
                 {
                         // decompile,deobfuscate the bytecode
-                        CompilationUnit sourceTree = deobfuscator.getSourceTree(classEntry.getClassName());
+                        CompilationUnit sourceTree = deobfuscator.getSourceTree(classEntry.getFullName());
                         if (sourceTree == null) {
                                 // decompilation of this class is not supported
                                 gui.setSource("Unable to find class: " + classEntry);
@@ -349,17 +354,18 @@ public class GuiController {
                         boolean remapped = false;
 
                         for (Token inToken : index.referenceTokens()) {
-                                EntryReference<Entry, Entry> reference = index.getDeobfReference(inToken);
                                 Token token = inToken.move(offset);
 
+                                EntryReference<Entry<?>, Entry<?>> reference = index.getDeobfReference(inToken);
                                 if (referenceIsRenameable(reference)) {
                                         boolean added = false;
 
                                         if (!entryHasDeobfuscatedName(reference.getNameableEntry())) {
-                                                Entry obfEntry = deobfuscator.obfuscateEntry(reference.getNameableEntry());
+                                                Entry<?> obfEntry = deobfuscator.getMapper().obfuscate(reference.getNameableEntry());
                                                 if (obfEntry instanceof FieldEntry) {
                                                         for (EnigmaPlugin plugin : deobfuscator.getPlugins()) {
-                                                                String proposal = plugin.proposeFieldName(obfEntry.getClassName(), obfEntry.getName(), ((FieldEntry) obfEntry).getDesc().toString());
+                                                                String owner = obfEntry.getContainingClass().getFullName();
+                                                                String proposal = plugin.proposeFieldName(owner, obfEntry.getName(), ((FieldEntry) obfEntry).getDesc().toString());
                                                                 if (proposal != null) {
                                                                         proposedTokens.add(token);
                                                                         offset += token.getRenameOffset(proposal);
@@ -411,8 +417,7 @@ public class GuiController {
 
         public void modifierChange(ItemEvent event) {
                 if (event.getStateChange() == ItemEvent.SELECTED) {
-                        deobfuscator.changeModifier(gui.reference.entry, (Mappings.EntryModifier) event.getItem());
-                        this.isDirty = true;
+                        deobfuscator.changeModifier(gui.reference.entry, (AccessModifier) event.getItem());
                         refreshCurrentClass();
                 }
         }
diff --git a/src/main/java/cuchaz/enigma/gui/GuiTricks.java b/src/main/java/cuchaz/enigma/gui/GuiTricks.java
deleted file mode 100644
index 9208455..0000000
--- a/src/main/java/cuchaz/enigma/gui/GuiTricks.java
+++ /dev/null
@@ -1,42 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.gui;
-
-import javax.swing.*;
-import java.awt.*;
-import java.awt.event.ActionListener;
-
-public class GuiTricks {
-
-        public static JLabel unboldLabel(JLabel label) {
-                Font font = label.getFont();
-                label.setFont(font.deriveFont(font.getStyle() & ~Font.BOLD));
-                return label;
-        }
-
-        public static void deactivateButton(JButton button) {
-                button.setEnabled(false);
-                button.setText("");
-                for (ActionListener listener : button.getActionListeners()) {
-                        button.removeActionListener(listener);
-                }
-        }
-
-        public static void activateButton(JButton button, String text, ActionListener newListener) {
-                button.setText(text);
-                button.setEnabled(true);
-                for (ActionListener listener : button.getActionListeners()) {
-                        button.removeActionListener(listener);
-                }
-                button.addActionListener(newListener);
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/gui/ScoredClassEntry.java b/src/main/java/cuchaz/enigma/gui/ScoredClassEntry.java
deleted file mode 100644
index 34ec26e..0000000
--- a/src/main/java/cuchaz/enigma/gui/ScoredClassEntry.java
+++ /dev/null
@@ -1,44 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.gui;
-
-import cuchaz.enigma.mapping.entry.ClassEntry;
-
-public class ScoredClassEntry extends ClassEntry {
-
-        private static final long serialVersionUID = -8798725308554217105L;
-
-        private float score;
-
-        public ScoredClassEntry(ClassEntry other, float score) {
-                super(other);
-                this.score = score;
-        }
-
-        public float getScore() {
-                return score;
-        }
-
-        @Override
-        public int hashCode() {
-                return Float.hashCode(score) + super.hashCode();
-        }
-
-        @Override
-        public boolean equals(Object other) {
-                return super.equals(other) && other instanceof ScoredClassEntry && equals((ScoredClassEntry) other);
-        }
-
-        public boolean equals(ScoredClassEntry other) {
-                return other != null && Float.compare(score, other.score) == 0;
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/gui/dialog/ProgressDialog.java b/src/main/java/cuchaz/enigma/gui/dialog/ProgressDialog.java
index 5f04833..84fe7c8 100644
--- a/src/main/java/cuchaz/enigma/gui/dialog/ProgressDialog.java
+++ b/src/main/java/cuchaz/enigma/gui/dialog/ProgressDialog.java
@@ -12,7 +12,7 @@
 package cuchaz.enigma.gui.dialog;
 
 import cuchaz.enigma.Constants;
-import cuchaz.enigma.Deobfuscator.ProgressListener;
+import cuchaz.enigma.ProgressListener;
 import cuchaz.enigma.utils.Utils;
 
 import javax.swing.*;
@@ -81,7 +81,7 @@ public class ProgressDialog implements ProgressListener, AutoCloseable {
         }
 
         @Override
-        public void onProgress(int numDone, String message) {
+        public void step(int numDone, String message) {
                 this.labelText.setText(message);
                 this.progress.setValue(numDone);
 
diff --git a/src/main/java/cuchaz/enigma/gui/elements/MenuBar.java b/src/main/java/cuchaz/enigma/gui/elements/MenuBar.java
index 609aecb..f4f0277 100644
--- a/src/main/java/cuchaz/enigma/gui/elements/MenuBar.java
+++ b/src/main/java/cuchaz/enigma/gui/elements/MenuBar.java
@@ -5,6 +5,7 @@ import cuchaz.enigma.config.Themes;
 import cuchaz.enigma.gui.Gui;
 import cuchaz.enigma.gui.dialog.AboutDialog;
 import cuchaz.enigma.throwables.MappingParseException;
+import cuchaz.enigma.translation.mapping.serde.MappingFormat;
 
 import javax.swing.*;
 import java.awt.event.InputEvent;
@@ -23,7 +24,6 @@ public class MenuBar extends JMenuBar {
         public final JMenuItem saveMappingEnigmaDirectoryMenu;
         public final JMenuItem saveMappingsSrgMenu;
         public final JMenuItem closeMappingsMenu;
-        public final JMenuItem rebuildMethodNamesMenu;
         public final JMenuItem exportSourceMenu;
         public final JMenuItem exportJarMenu;
         private final Gui gui;
@@ -68,7 +68,9 @@ public class MenuBar extends JMenuBar {
                                 item.addActionListener(event -> {
                                         if (this.gui.enigmaMappingsFileChooser.showOpenDialog(this.gui.getFrame()) == JFileChooser.APPROVE_OPTION) {
                                                 try {
-                                                        this.gui.getController().openEnigmaMappings(this.gui.enigmaMappingsFileChooser.getSelectedFile());
+                                                        File selectedFile = this.gui.enigmaMappingsFileChooser.getSelectedFile();
+                                                        MappingFormat format = selectedFile.isDirectory() ? MappingFormat.ENIGMA_DIRECTORY : MappingFormat.ENIGMA_FILE;
+                                                        this.gui.getController().openMappings(format, selectedFile.toPath());
                                                 } catch (IOException ex) {
                                                         throw new Error(ex);
                                                 } catch (MappingParseException ex) {
@@ -85,7 +87,7 @@ public class MenuBar extends JMenuBar {
                                         File file = new File(this.gui.tinyMappingsFileChooser.getDirectory() + File.separator + this.gui.tinyMappingsFileChooser.getFile());
                                         if (file.exists()) {
                                                 try {
-                                                        this.gui.getController().openTinyMappings(file);
+                                                        this.gui.getController().openMappings(MappingFormat.TINY_FILE, file.toPath());
                                                 } catch (IOException ex) {
                                                         throw new Error(ex);
                                                 } catch (MappingParseException ex) {
@@ -99,11 +101,7 @@ public class MenuBar extends JMenuBar {
                                 JMenuItem item = new JMenuItem("Save Mappings");
                                 menu.add(item);
                                 item.addActionListener(event -> {
-                                        try {
-                                                this.gui.getController().saveMappings(this.gui.enigmaMappingsFileChooser.getSelectedFile());
-                                        } catch (IOException ex) {
-                                                throw new Error(ex);
-                                        }
+                                        this.gui.getController().saveMappings(this.gui.enigmaMappingsFileChooser.getSelectedFile().toPath());
                                 });
                                 item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, InputEvent.CTRL_DOWN_MASK));
                                 this.saveMappingsMenu = item;
@@ -116,12 +114,8 @@ public class MenuBar extends JMenuBar {
                                 item.addActionListener(event -> {
                                         // TODO: Use a specific file chooser for it
                                         if (this.gui.enigmaMappingsFileChooser.showSaveDialog(this.gui.getFrame()) == JFileChooser.APPROVE_OPTION) {
-                                                try {
-                                                        this.gui.getController().saveEnigmaMappings(this.gui.enigmaMappingsFileChooser.getSelectedFile(), false);
-                                                        this.saveMappingsMenu.setEnabled(true);
-                                                } catch (IOException ex) {
-                                                        throw new Error(ex);
-                                                }
+                                                this.gui.getController().saveMappings(MappingFormat.ENIGMA_FILE, this.gui.enigmaMappingsFileChooser.getSelectedFile().toPath());
+                                                this.saveMappingsMenu.setEnabled(true);
                                         }
                                 });
                                 this.saveMappingEnigmaFileMenu = item;
@@ -132,12 +126,8 @@ public class MenuBar extends JMenuBar {
                                 item.addActionListener(event -> {
                                         // TODO: Use a specific file chooser for it
                                         if (this.gui.enigmaMappingsFileChooser.showSaveDialog(this.gui.getFrame()) == JFileChooser.APPROVE_OPTION) {
-                                                try {
-                                                        this.gui.getController().saveEnigmaMappings(this.gui.enigmaMappingsFileChooser.getSelectedFile(), true);
-                                                        this.saveMappingsMenu.setEnabled(true);
-                                                } catch (IOException ex) {
-                                                        throw new Error(ex);
-                                                }
+                                                this.gui.getController().saveMappings(MappingFormat.ENIGMA_DIRECTORY, this.gui.enigmaMappingsFileChooser.getSelectedFile().toPath());
+                                                this.saveMappingsMenu.setEnabled(true);
                                         }
                                 });
                                 item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, InputEvent.CTRL_DOWN_MASK | InputEvent.SHIFT_DOWN_MASK));
@@ -149,12 +139,8 @@ public class MenuBar extends JMenuBar {
                                 item.addActionListener(event -> {
                                         // TODO: Use a specific file chooser for it
                                         if (this.gui.enigmaMappingsFileChooser.showSaveDialog(this.gui.getFrame()) == JFileChooser.APPROVE_OPTION) {
-                                                try {
-                                                        this.gui.getController().saveSRGMappings(this.gui.enigmaMappingsFileChooser.getSelectedFile());
-                                                        this.saveMappingsMenu.setEnabled(true);
-                                                } catch (IOException ex) {
-                                                        throw new Error(ex);
-                                                }
+                                                this.gui.getController().saveMappings(MappingFormat.SRG_FILE, this.gui.enigmaMappingsFileChooser.getSelectedFile().toPath());
+                                                this.saveMappingsMenu.setEnabled(true);
                                         }
                                 });
                                 this.saveMappingsSrgMenu = item;
@@ -184,13 +170,6 @@ public class MenuBar extends JMenuBar {
                         }
                         menu.addSeparator();
                         {
-                                JMenuItem item = new JMenuItem("Rebuild Method Names");
-                                menu.add(item);
-                                item.addActionListener(event -> this.gui.getController().rebuildMethodNames());
-                                this.rebuildMethodNamesMenu = item;
-                        }
-                        menu.addSeparator();
-                        {
                                 JMenuItem item = new JMenuItem("Export Source...");
                                 menu.add(item);
                                 item.addActionListener(event -> {
diff --git a/src/main/java/cuchaz/enigma/gui/node/ClassSelectorClassNode.java b/src/main/java/cuchaz/enigma/gui/node/ClassSelectorClassNode.java
index a965a8f..bf6b178 100644
--- a/src/main/java/cuchaz/enigma/gui/node/ClassSelectorClassNode.java
+++ b/src/main/java/cuchaz/enigma/gui/node/ClassSelectorClassNode.java
@@ -11,7 +11,7 @@
 
 package cuchaz.enigma.gui.node;
 
-import cuchaz.enigma.mapping.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
 
 import javax.swing.tree.DefaultMutableTreeNode;
 
diff --git a/src/main/java/cuchaz/enigma/gui/panels/PanelObf.java b/src/main/java/cuchaz/enigma/gui/panels/PanelObf.java
index 9eb8f8f..ccdc9f8 100644
--- a/src/main/java/cuchaz/enigma/gui/panels/PanelObf.java
+++ b/src/main/java/cuchaz/enigma/gui/panels/PanelObf.java
@@ -2,7 +2,7 @@ package cuchaz.enigma.gui.panels;
 
 import cuchaz.enigma.gui.ClassSelector;
 import cuchaz.enigma.gui.Gui;
-import cuchaz.enigma.mapping.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
 
 import javax.swing.*;
 import java.awt.*;
@@ -17,8 +17,8 @@ public class PanelObf extends JPanel {
                 this.gui = gui;
 
                 Comparator<ClassEntry> obfClassComparator = (a, b) -> {
-                        String aname = a.getName();
-                        String bname = b.getName();
+                        String aname = a.getFullName();
+                        String bname = b.getFullName();
                         if (aname.length() != bname.length()) {
                                 return aname.length() - bname.length();
                         }
diff --git a/src/main/java/cuchaz/enigma/mapping/ClassMapping.java b/src/main/java/cuchaz/enigma/mapping/ClassMapping.java
deleted file mode 100644
index 9c193ef..0000000
--- a/src/main/java/cuchaz/enigma/mapping/ClassMapping.java
+++ /dev/null
@@ -1,627 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping;
-
-import com.google.common.collect.Maps;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.FieldEntry;
-import cuchaz.enigma.mapping.entry.MethodEntry;
-import cuchaz.enigma.throwables.MappingConflict;
-
-import java.util.ArrayList;
-import java.util.Map;
-
-// FIXME: Enigma doesn't support inner classes of inner class????!
-public class ClassMapping implements Comparable<ClassMapping> {
-
-        private String obfFullName;
-        private String obfSimpleName;
-        private String deobfName;
-        private String deobfFullName;
-        private String previousDeobfName;
-        private Map<String, ClassMapping> innerClassesByObfSimple;
-        private Map<String, ClassMapping> innerClassesByObfFull;
-        private Map<String, ClassMapping> innerClassesByDeobf;
-        private Map<String, FieldMapping> fieldsByObf;
-        private Map<String, FieldMapping> fieldsByDeobf;
-        private Map<String, MethodMapping> methodsByObf;
-        private Map<String, MethodMapping> methodsByDeobf;
-        private boolean isDirty;
-        private Mappings.EntryModifier modifier;
-
-        public ClassMapping(String obfFullName) {
-                this(obfFullName, null, Mappings.EntryModifier.UNCHANGED);
-        }
-
-        public ClassMapping(String obfFullName, String deobfName) {
-                this(obfFullName, deobfName, Mappings.EntryModifier.UNCHANGED);
-        }
-
-        public ClassMapping(String obfFullName, String deobfName, Mappings.EntryModifier modifier) {
-                this.obfFullName = obfFullName;
-                ClassEntry classEntry = new ClassEntry(obfFullName);
-                obfSimpleName = classEntry.isInnerClass() ? classEntry.getInnermostClassName() : classEntry.getSimpleName();
-                previousDeobfName = null;
-                this.deobfName = NameValidator.validateClassName(deobfName, false);
-                innerClassesByObfSimple = Maps.newHashMap();
-                innerClassesByObfFull = Maps.newHashMap();
-                innerClassesByDeobf = Maps.newHashMap();
-                fieldsByObf = Maps.newHashMap();
-                fieldsByDeobf = Maps.newHashMap();
-                methodsByObf = Maps.newHashMap();
-                methodsByDeobf = Maps.newHashMap();
-                isDirty = true;
-                this.modifier = modifier;
-        }
-
-        public static boolean isSimpleClassName(String name) {
-                return name.indexOf('/') < 0 && name.indexOf('$') < 0;
-        }
-
-        public String getObfFullName() {
-                return obfFullName;
-        }
-
-        public String getObfSimpleName() {
-                return obfSimpleName;
-        }
-
-        public String getPreviousDeobfName() {
-                return previousDeobfName;
-        }
-
-        public String getDeobfName() {
-                return deobfName;
-        }
-
-        public String getTranslatedName(TranslationDirection direction) {
-                return direction.choose(deobfName, obfFullName);
-        }
-
-        //// INNER CLASSES ////////
-
-        public void setDeobfName(String val) {
-                previousDeobfName = deobfName;
-                deobfName = NameValidator.validateClassName(val, false);
-                this.isDirty = true;
-        }
-
-        public Iterable<ClassMapping> innerClasses() {
-                assert (innerClassesByObfSimple.size() >= innerClassesByDeobf.size());
-                return innerClassesByObfSimple.values();
-        }
-
-        public void addInnerClassMapping(ClassMapping classMapping) throws MappingConflict {
-                // FIXME: dirty hack, that can get into issues, but it's a temp fix!
-                if (this.innerClassesByObfFull.containsKey(classMapping.getObfSimpleName())) {
-                        throw new MappingConflict("classes", classMapping.getObfSimpleName(), this.innerClassesByObfSimple.get(classMapping.getObfSimpleName()).getObfSimpleName());
-                }
-                innerClassesByObfFull.put(classMapping.getObfFullName(), classMapping);
-                innerClassesByObfSimple.put(classMapping.getObfSimpleName(), classMapping);
-
-                if (classMapping.getDeobfName() != null) {
-                        if (this.innerClassesByDeobf.containsKey(classMapping.getDeobfName())) {
-                                throw new MappingConflict("classes", classMapping.getDeobfName(), this.innerClassesByDeobf.get(classMapping.getDeobfName()).getDeobfName());
-                        }
-                        innerClassesByDeobf.put(classMapping.getDeobfName(), classMapping);
-                }
-                this.isDirty = true;
-        }
-
-        public void removeInnerClassMapping(ClassMapping classMapping) {
-                innerClassesByObfFull.remove(classMapping.getObfFullName());
-                boolean obfWasRemoved = innerClassesByObfSimple.remove(classMapping.getObfSimpleName()) != null;
-                assert (obfWasRemoved);
-                if (classMapping.getDeobfName() != null) {
-                        boolean deobfWasRemoved = innerClassesByDeobf.remove(classMapping.getDeobfName()) != null;
-                        assert (deobfWasRemoved);
-                }
-                this.isDirty = true;
-        }
-
-        public ClassMapping getOrCreateInnerClass(ClassEntry obfInnerClass) {
-                ClassMapping classMapping = innerClassesByObfSimple.get(obfInnerClass.getInnermostClassName());
-                if (classMapping == null) {
-                        classMapping = new ClassMapping(obfInnerClass.getName());
-                        innerClassesByObfFull.put(classMapping.getObfFullName(), classMapping);
-                        boolean wasAdded = innerClassesByObfSimple.put(classMapping.getObfSimpleName(), classMapping) == null;
-                        assert (wasAdded);
-                        this.isDirty = true;
-                }
-                return classMapping;
-        }
-
-        public ClassMapping getInnerClassByObfSimple(String obfSimpleName) {
-                assert (isSimpleClassName(obfSimpleName));
-                return innerClassesByObfSimple.get(obfSimpleName);
-        }
-
-        public ClassMapping getInnerClassByDeobf(String deobfName) {
-                assert (isSimpleClassName(deobfName));
-                return innerClassesByDeobf.get(deobfName);
-        }
-
-        public ClassMapping getInnerClassByDeobfThenObfSimple(String name) {
-                ClassMapping classMapping = getInnerClassByDeobf(name);
-                if (classMapping == null) {
-                        classMapping = getInnerClassByObfSimple(name);
-                }
-                return classMapping;
-        }
-
-        public String getDeobfInnerClassName(String obfSimpleName) {
-                assert (isSimpleClassName(obfSimpleName));
-                ClassMapping classMapping = innerClassesByObfSimple.get(obfSimpleName);
-                if (classMapping != null) {
-                        return classMapping.getDeobfName();
-                }
-                return null;
-        }
-
-        public void setInnerClassName(ClassEntry obfInnerClass, String deobfName) {
-                ClassMapping classMapping = getOrCreateInnerClass(obfInnerClass);
-                if (classMapping.getDeobfName() != null) {
-                        boolean wasRemoved = innerClassesByDeobf.remove(classMapping.getDeobfName()) != null;
-                        assert (wasRemoved);
-                }
-                classMapping.setDeobfName(deobfName);
-                if (deobfName != null) {
-                        assert (isSimpleClassName(deobfName));
-                        boolean wasAdded = innerClassesByDeobf.put(deobfName, classMapping) == null;
-                        assert (wasAdded);
-                }
-                this.isDirty = true;
-        }
-
-        public boolean hasInnerClassByObfSimple(String obfSimpleName) {
-                return innerClassesByObfSimple.containsKey(obfSimpleName);
-        }
-
-        //// FIELDS ////////
-
-        public boolean hasInnerClassByDeobf(String deobfName) {
-                return innerClassesByDeobf.containsKey(deobfName);
-        }
-
-        public Iterable<FieldMapping> fields() {
-                assert (fieldsByObf.size() == fieldsByDeobf.size());
-                return fieldsByObf.values();
-        }
-
-        public boolean containsObfField(String obfName, TypeDescriptor obfDesc) {
-                return fieldsByObf.containsKey(getFieldKey(obfName, obfDesc));
-        }
-
-        public boolean containsDeobfField(String deobfName, TypeDescriptor deobfDesc) {
-                return fieldsByDeobf.containsKey(getFieldKey(deobfName, deobfDesc));
-        }
-
-        public void addFieldMapping(FieldMapping fieldMapping) {
-                String obfKey = getFieldKey(fieldMapping.getObfName(), fieldMapping.getObfDesc());
-                if (fieldsByObf.containsKey(obfKey)) {
-                        throw new Error("Already have mapping for " + obfFullName + "." + obfKey);
-                }
-                if (fieldMapping.getDeobfName() != null) {
-                        String deobfKey = getFieldKey(fieldMapping.getDeobfName(), fieldMapping.getObfDesc());
-                        if (fieldsByDeobf.containsKey(deobfKey)) {
-                                throw new Error("Already have mapping for " + deobfName + "." + deobfKey);
-                        }
-                        boolean deobfWasAdded = fieldsByDeobf.put(deobfKey, fieldMapping) == null;
-                        assert (deobfWasAdded);
-                }
-                boolean obfWasAdded = fieldsByObf.put(obfKey, fieldMapping) == null;
-                assert (obfWasAdded);
-                this.isDirty = true;
-        }
-
-        public void removeFieldMapping(FieldMapping fieldMapping) {
-                boolean obfWasRemoved = fieldsByObf.remove(getFieldKey(fieldMapping.getObfName(), fieldMapping.getObfDesc())) != null;
-                assert (obfWasRemoved);
-                if (fieldMapping.getDeobfName() != null) {
-                        boolean deobfWasRemoved = fieldsByDeobf.remove(getFieldKey(fieldMapping.getDeobfName(), fieldMapping.getObfDesc())) != null;
-                        assert (deobfWasRemoved);
-                }
-                this.isDirty = true;
-        }
-
-        public FieldMapping getFieldByObf(String obfName, TypeDescriptor obfDesc) {
-                return fieldsByObf.get(getFieldKey(obfName, obfDesc));
-        }
-
-        public FieldMapping getFieldByObf(FieldEntry field) {
-                return getFieldByObf(field.getName(), field.getDesc());
-        }
-
-        public FieldMapping getFieldByDeobf(String deobfName, TypeDescriptor obfDesc) {
-                return fieldsByDeobf.get(getFieldKey(deobfName, obfDesc));
-        }
-
-        public String getObfFieldName(String deobfName, TypeDescriptor obfDesc) {
-                FieldMapping fieldMapping = fieldsByDeobf.get(getFieldKey(deobfName, obfDesc));
-                if (fieldMapping != null) {
-                        return fieldMapping.getObfName();
-                }
-                return null;
-        }
-
-        public String getDeobfFieldName(String obfName, TypeDescriptor obfDesc) {
-                FieldMapping fieldMapping = fieldsByObf.get(getFieldKey(obfName, obfDesc));
-                if (fieldMapping != null) {
-                        return fieldMapping.getDeobfName();
-                }
-                return null;
-        }
-
-        private String getFieldKey(String name, TypeDescriptor desc) {
-                if (name == null) {
-                        throw new IllegalArgumentException("name cannot be null!");
-                }
-                if (desc == null) {
-                        throw new IllegalArgumentException("desc cannot be null!");
-                }
-                return name + ":" + desc;
-        }
-
-        public void setFieldName(String obfName, TypeDescriptor obfDesc, String deobfName) {
-                assert (deobfName != null);
-                FieldMapping fieldMapping = fieldsByObf.get(getFieldKey(obfName, obfDesc));
-                if (fieldMapping == null) {
-                        fieldMapping = new FieldMapping(obfName, obfDesc, deobfName, Mappings.EntryModifier.UNCHANGED);
-                        boolean obfWasAdded = fieldsByObf.put(getFieldKey(obfName, obfDesc), fieldMapping) == null;
-                        assert (obfWasAdded);
-                } else {
-                        boolean wasRemoved = fieldsByDeobf.remove(getFieldKey(fieldMapping.getDeobfName(), obfDesc)) != null;
-                        assert (wasRemoved);
-                }
-                fieldMapping.setDeobfName(deobfName);
-                if (deobfName != null) {
-                        boolean wasAdded = fieldsByDeobf.put(getFieldKey(deobfName, obfDesc), fieldMapping) == null;
-                        assert (wasAdded);
-                }
-                this.isDirty = true;
-        }
-
-        //// METHODS ////////
-
-        public void setFieldObfNameAndType(String oldObfName, TypeDescriptor obfDesc, String newObfName, TypeDescriptor newObfDesc) {
-                assert (newObfName != null);
-                FieldMapping fieldMapping = fieldsByObf.remove(getFieldKey(oldObfName, obfDesc));
-                assert (fieldMapping != null);
-                fieldMapping.setObfName(newObfName);
-                fieldMapping.setObfDesc(newObfDesc);
-                boolean obfWasAdded = fieldsByObf.put(getFieldKey(newObfName, newObfDesc), fieldMapping) == null;
-                assert (obfWasAdded);
-                this.isDirty = true;
-        }
-
-        public Iterable<MethodMapping> methods() {
-                assert (methodsByObf.size() >= methodsByDeobf.size());
-                return methodsByObf.values();
-        }
-
-        public boolean containsObfMethod(String obfName, MethodDescriptor obfDescriptor) {
-                return methodsByObf.containsKey(getMethodKey(obfName, obfDescriptor));
-        }
-
-        public boolean containsDeobfMethod(String deobfName, MethodDescriptor obfDescriptor) {
-                return methodsByDeobf.containsKey(getMethodKey(deobfName, obfDescriptor));
-        }
-
-        public void addMethodMapping(MethodMapping methodMapping) {
-                String obfKey = getMethodKey(methodMapping.getObfName(), methodMapping.getObfDesc());
-                if (methodsByObf.containsKey(obfKey)) {
-                        throw new Error("Already have mapping for " + obfFullName + "." + obfKey);
-                }
-                boolean wasAdded = methodsByObf.put(obfKey, methodMapping) == null;
-                assert (wasAdded);
-                if (!methodMapping.isObfuscated()) {
-                        String deobfKey = getMethodKey(methodMapping.getDeobfName(), methodMapping.getObfDesc());
-                        if (methodsByDeobf.containsKey(deobfKey)) {
-                                throw new Error("Already have mapping for " + deobfName + "." + deobfKey);
-                        }
-                        boolean deobfWasAdded = methodsByDeobf.put(deobfKey, methodMapping) == null;
-                        assert (deobfWasAdded);
-                }
-                this.isDirty = true;
-                assert (methodsByObf.size() >= methodsByDeobf.size());
-        }
-
-        public void removeMethodMapping(MethodMapping methodMapping) {
-                boolean obfWasRemoved = methodsByObf.remove(getMethodKey(methodMapping.getObfName(), methodMapping.getObfDesc())) != null;
-                assert (obfWasRemoved);
-                if (!methodMapping.isObfuscated()) {
-                        boolean deobfWasRemoved = methodsByDeobf.remove(getMethodKey(methodMapping.getDeobfName(), methodMapping.getObfDesc())) != null;
-                        assert (deobfWasRemoved);
-                }
-                this.isDirty = true;
-        }
-
-        public MethodMapping getMethodByObf(String obfName, MethodDescriptor obfDescriptor) {
-                return methodsByObf.get(getMethodKey(obfName, obfDescriptor));
-        }
-
-        public MethodMapping getMethodByObf(MethodEntry method) {
-                return getMethodByObf(method.getName(), method.getDesc());
-        }
-
-        public MethodMapping getMethodByDeobf(String deobfName, MethodDescriptor obfDescriptor) {
-                return methodsByDeobf.get(getMethodKey(deobfName, obfDescriptor));
-        }
-
-        private String getMethodKey(String name, MethodDescriptor descriptor) {
-                if (name == null) {
-                        throw new IllegalArgumentException("name cannot be null!");
-                }
-                if (descriptor == null) {
-                        throw new IllegalArgumentException("descriptor cannot be null!");
-                }
-                return name + descriptor;
-        }
-
-        public void setMethodName(String obfName, MethodDescriptor obfDescriptor, String deobfName) {
-                MethodMapping methodMapping = methodsByObf.get(getMethodKey(obfName, obfDescriptor));
-                if (methodMapping == null) {
-                        methodMapping = createMethodMapping(obfName, obfDescriptor);
-                } else if (!methodMapping.isObfuscated()) {
-                        boolean wasRemoved = methodsByDeobf.remove(getMethodKey(methodMapping.getDeobfName(), methodMapping.getObfDesc())) != null;
-                        assert (wasRemoved);
-                }
-                methodMapping.setDeobfName(deobfName);
-                if (deobfName != null) {
-                        boolean wasAdded = methodsByDeobf.put(getMethodKey(deobfName, obfDescriptor), methodMapping) == null;
-                        assert (wasAdded);
-                }
-                this.isDirty = true;
-        }
-
-        //// ARGUMENTS ////////
-
-        public void setMethodObfNameAndSignature(String oldObfName, MethodDescriptor obfDescriptor, String newObfName, MethodDescriptor newObfDescriptor) {
-                assert (newObfName != null);
-                MethodMapping methodMapping = methodsByObf.remove(getMethodKey(oldObfName, obfDescriptor));
-                assert (methodMapping != null);
-                methodMapping.setObfName(newObfName);
-                methodMapping.setObfDescriptor(newObfDescriptor);
-                boolean obfWasAdded = methodsByObf.put(getMethodKey(newObfName, newObfDescriptor), methodMapping) == null;
-                assert (obfWasAdded);
-                this.isDirty = true;
-        }
-
-        public void setArgumentName(String obfMethodName, MethodDescriptor obfMethodDescriptor, int argumentIndex, String argumentName) {
-                assert (argumentName != null);
-                MethodMapping methodMapping = methodsByObf.get(getMethodKey(obfMethodName, obfMethodDescriptor));
-                if (methodMapping == null) {
-                        methodMapping = createMethodMapping(obfMethodName, obfMethodDescriptor);
-                }
-                methodMapping.setLocalVariableName(argumentIndex, argumentName);
-                this.isDirty = true;
-        }
-
-        public void removeArgumentName(String obfMethodName, MethodDescriptor obfMethodDescriptor, int argumentIndex) {
-                methodsByObf.get(getMethodKey(obfMethodName, obfMethodDescriptor)).removeLocalVariableName(argumentIndex);
-                this.isDirty = true;
-        }
-
-        private MethodMapping createMethodMapping(String obfName, MethodDescriptor obfDescriptor) {
-                MethodMapping methodMapping = new MethodMapping(obfName, obfDescriptor);
-                boolean wasAdded = methodsByObf.put(getMethodKey(obfName, obfDescriptor), methodMapping) == null;
-                assert (wasAdded);
-                this.isDirty = true;
-                return methodMapping;
-        }
-
-        @Override
-        public String toString() {
-                StringBuilder buf = new StringBuilder();
-                buf.append(obfFullName);
-                buf.append(" <-> ");
-                buf.append(deobfName);
-                buf.append("\n");
-                buf.append("Fields:\n");
-                for (FieldMapping fieldMapping : fields()) {
-                        buf.append("\t");
-                        buf.append(fieldMapping.getObfName());
-                        buf.append(" <-> ");
-                        buf.append(fieldMapping.getDeobfName());
-                        buf.append("\n");
-                }
-                buf.append("Methods:\n");
-                for (MethodMapping methodMapping : methodsByObf.values()) {
-                        buf.append(methodMapping);
-                        buf.append("\n");
-                }
-                buf.append("Inner Classes:\n");
-                for (ClassMapping classMapping : innerClassesByObfSimple.values()) {
-                        buf.append("\t");
-                        buf.append(classMapping.getObfSimpleName());
-                        buf.append(" <-> ");
-                        buf.append(classMapping.getDeobfName());
-                        buf.append("\n");
-                }
-                return buf.toString();
-        }
-
-        @Override
-        public int compareTo(ClassMapping other) {
-                // sort by a, b, c, ... aa, ab, etc
-                if (obfFullName.length() != other.obfFullName.length()) {
-                        return obfFullName.length() - other.obfFullName.length();
-                }
-                return obfFullName.compareTo(other.obfFullName);
-        }
-
-        public boolean renameObfClass(String oldObfClassName, String newObfClassName) {
-
-                // rename inner classes
-                for (ClassMapping innerClassMapping : new ArrayList<>(innerClassesByObfSimple.values())) {
-                        if (innerClassMapping.renameObfClass(oldObfClassName, newObfClassName)) {
-                                boolean wasRemoved = innerClassesByObfSimple.remove(oldObfClassName) != null;
-                                assert (wasRemoved);
-                                boolean wasAdded = innerClassesByObfSimple.put(newObfClassName, innerClassMapping) == null;
-                                assert (wasAdded);
-                        }
-                }
-
-                // rename field types
-                for (FieldMapping fieldMapping : new ArrayList<>(fieldsByObf.values())) {
-                        String oldFieldKey = getFieldKey(fieldMapping.getObfName(), fieldMapping.getObfDesc());
-                        if (fieldMapping.renameObfClass(oldObfClassName, newObfClassName)) {
-                                boolean wasRemoved = fieldsByObf.remove(oldFieldKey) != null;
-                                assert (wasRemoved);
-                                boolean wasAdded = fieldsByObf
-                                        .put(getFieldKey(fieldMapping.getObfName(), fieldMapping.getObfDesc()), fieldMapping) == null;
-                                assert (wasAdded);
-                        }
-                }
-
-                // rename method signatures
-                for (MethodMapping methodMapping : new ArrayList<>(methodsByObf.values())) {
-                        String oldMethodKey = getMethodKey(methodMapping.getObfName(), methodMapping.getObfDesc());
-                        if (methodMapping.renameObfClass(oldObfClassName, newObfClassName)) {
-                                boolean wasRemoved = methodsByObf.remove(oldMethodKey) != null;
-                                assert (wasRemoved);
-                                boolean wasAdded = methodsByObf
-                                        .put(getMethodKey(methodMapping.getObfName(), methodMapping.getObfDesc()), methodMapping) == null;
-                                assert (wasAdded);
-                        }
-                }
-
-                if (obfFullName.equals(oldObfClassName)) {
-                        // rename this class
-                        obfFullName = newObfClassName;
-                        return true;
-                }
-                this.isDirty = true;
-                return false;
-        }
-
-        public boolean containsArgument(MethodEntry obfMethodEntry, String name) {
-                MethodMapping methodMapping = methodsByObf.get(getMethodKey(obfMethodEntry.getName(), obfMethodEntry.getDesc()));
-                return methodMapping != null && methodMapping.containsLocalVariable(name);
-        }
-
-        public ClassEntry getObfEntry() {
-                return new ClassEntry(obfFullName);
-        }
-
-        public ClassEntry getDeObfEntry() {
-                return deobfFullName != null ? new ClassEntry(deobfFullName) : null;
-        }
-
-        public boolean isObfuscated() {
-                return this.deobfName == null || this.deobfName.equals(this.obfFullName);
-        }
-
-        public String getSaveName() {
-                return this.isObfuscated() ? this.obfFullName : this.deobfName;
-        }
-
-        public boolean isDirty() {
-                return isDirty || areInnersDirty();
-        }
-
-        private boolean areInnersDirty(){
-                for (ClassMapping c : this.innerClasses()){
-                        if (c.isDirty()){
-                                return true;
-                        }
-                }
-                return false;
-        }
-
-        public void resetDirty() {
-                this.isDirty = false;
-        }
-
-        public void markDirty() {
-                this.isDirty = true;
-        }
-
-        public Mappings.EntryModifier getModifier() {
-                return modifier;
-        }
-
-        public void setModifier(Mappings.EntryModifier modifier) {
-                if (this.modifier != modifier)
-                        this.isDirty = true;
-                this.modifier = modifier;
-        }
-
-        public void setFieldModifier(String obfName, TypeDescriptor obfDesc, Mappings.EntryModifier modifier) {
-                FieldMapping fieldMapping = fieldsByObf.computeIfAbsent(getFieldKey(obfName, obfDesc),
-                        k -> new FieldMapping(obfName, obfDesc, null, Mappings.EntryModifier.UNCHANGED));
-
-                if (fieldMapping.getModifier() != modifier) {
-                        fieldMapping.setModifier(modifier);
-                        this.isDirty = true;
-                }
-        }
-
-        public void setMethodModifier(String obfName, MethodDescriptor sig, Mappings.EntryModifier modifier) {
-                MethodMapping methodMapping = methodsByObf.computeIfAbsent(getMethodKey(obfName, sig),
-                        k -> new MethodMapping(obfName, sig, null, Mappings.EntryModifier.UNCHANGED));
-
-                if (methodMapping.getModifier() != modifier) {
-                        methodMapping.setModifier(modifier);
-                        this.isDirty = true;
-                }
-        }
-
-        // Used for tiny parsing to keep track of deobfuscate inner classes
-        public ClassMapping setDeobfInner(String deobName) {
-                this.deobfFullName = deobName;
-                return this;
-        }
-
-        public ClassMapping copy() {
-                ClassMapping copied = new ClassMapping(this.obfFullName);
-                copied.obfSimpleName= this.obfSimpleName;
-                copied.modifier = this.modifier;
-                copied.deobfFullName = this.deobfFullName;
-                copied.deobfName = this.deobfName;
-                copied.innerClassesByDeobf = this.innerClassesByDeobf;
-                copied.innerClassesByObfFull = this.innerClassesByObfFull;
-                copied.innerClassesByObfSimple = this.innerClassesByObfSimple;
-                copied.fieldsByObf = this.fieldsByObf;
-                copied.fieldsByDeobf = this.fieldsByDeobf;
-                copied.methodsByObf = this.methodsByObf;
-                copied.methodsByDeobf = this.methodsByDeobf;
-                return copied;
-        }
-
-        @Override
-        public int hashCode() {
-                return this.obfFullName.hashCode();
-        }
-
-        @Override
-        public boolean equals(Object obj) {
-                return obj instanceof ClassMapping && ((ClassMapping) obj).obfFullName.equals(this.obfFullName);
-        }
-
-    public boolean isEmpty() {
-                if (fieldsByDeobf.isEmpty() && methodsByDeobf.isEmpty() && deobfFullName == null && deobfName == null
-                                && innerClassesByObfSimple.values().stream().allMatch(ClassMapping::isEmpty)) {
-
-                        // check args
-                        for (MethodMapping mapping : methodsByObf.values()) {
-                                if (mapping.arguments().iterator().hasNext()) {
-                                        return false;
-                                }
-                        }
-
-                        return true;
-                }
-
-                return false;
-    }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/DirectionalTranslator.java b/src/main/java/cuchaz/enigma/mapping/DirectionalTranslator.java
deleted file mode 100644
index 388e7ac..0000000
--- a/src/main/java/cuchaz/enigma/mapping/DirectionalTranslator.java
+++ /dev/null
@@ -1,371 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping;
-
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
-import cuchaz.enigma.analysis.TranslationIndex;
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.entry.*;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.ServiceLoader;
-
-public class DirectionalTranslator implements Translator {
-        private final TranslationDirection direction;
-        private final Map<String, ClassMapping> classes;
-        private final TranslationIndex index;
-
-        public DirectionalTranslator(ReferencedEntryPool entryPool) {
-                this.direction = null;
-                this.classes = Maps.newHashMap();
-                this.index = new TranslationIndex(entryPool);
-        }
-
-        public DirectionalTranslator(TranslationDirection direction, Map<String, ClassMapping> classes, TranslationIndex index) {
-                this.direction = direction;
-                this.classes = classes;
-                this.index = index;
-        }
-
-        public TranslationDirection getDirection() {
-                return direction;
-        }
-
-        public TranslationIndex getTranslationIndex() {
-                return index;
-        }
-
-        @Override
-        public ClassEntry getTranslatedClass(ClassEntry entry) {
-                String className;
-                if (entry.isArray()) {
-                        className = this.getTranslatedTypeDesc(new TypeDescriptor(entry.getName())).toString();
-                } else {
-                        className = entry.isInnerClass() ? translateInnerClassName(entry) : translateClassName(entry);
-                }
-                return new ClassEntry(className);
-        }
-
-        @Override
-        public ClassDefEntry getTranslatedClassDef(ClassDefEntry entry) {
-                String className;
-                if (entry.isArray()) {
-                        className = this.getTranslatedTypeDesc(new TypeDescriptor(entry.getName())).toString();
-                } else {
-                        className = entry.isInnerClass() ? translateInnerClassName(entry) : translateClassName(entry);
-                }
-                Signature translatedSignature = this.getTranslatedSignature(entry.getSignature());
-                return new ClassDefEntry(className, translatedSignature, getClassModifier(entry).transform(entry.getAccess()));
-        }
-
-        private String translateClassName(ClassEntry entry) {
-                // normal classes are easy
-                ClassMapping classMapping = this.classes.get(entry.getName());
-                if (classMapping == null) {
-                        return entry.getName();
-                }
-                return classMapping.getTranslatedName(direction);
-        }
-
-        private String translateInnerClassName(ClassEntry entry) {
-                // translate as much of the class chain as we can
-                List<ClassMapping> mappingsChain = getClassMappingChain(entry);
-                String[] obfClassNames = entry.getName().split("\\$");
-                StringBuilder buf = new StringBuilder();
-                for (int i = 0; i < obfClassNames.length; i++) {
-                        boolean isFirstClass = buf.length() == 0;
-                        String className = null;
-                        ClassMapping classMapping = mappingsChain.get(i);
-                        if (classMapping != null) {
-                                className = this.direction.choose(
-                                                classMapping.getDeobfName(),
-                                                isFirstClass ? classMapping.getObfFullName() : classMapping.getObfSimpleName()
-                                );
-                        }
-                        if (className == null) {
-                                className = obfClassNames[i];
-                        }
-                        if (!isFirstClass) {
-                                buf.append("$");
-                        }
-                        buf.append(className);
-                }
-                return buf.toString();
-        }
-
-        @Override
-        public FieldDefEntry getTranslatedFieldDef(FieldDefEntry entry) {
-                String translatedName = translateFieldName(entry);
-                if (translatedName == null) {
-                        translatedName = entry.getName();
-                }
-                ClassEntry translatedOwner = getTranslatedClass(entry.getOwnerClassEntry());
-                TypeDescriptor translatedDesc = getTranslatedTypeDesc(entry.getDesc());
-                Signature translatedSignature = getTranslatedSignature(entry.getSignature());
-                AccessFlags translatedAccess = getFieldModifier(entry).transform(entry.getAccess());
-                return new FieldDefEntry(translatedOwner, translatedName, translatedDesc, translatedSignature, translatedAccess);
-        }
-
-        @Override
-        public FieldEntry getTranslatedField(FieldEntry entry) {
-                String translatedName = translateFieldName(entry);
-                if (translatedName == null) {
-                        translatedName = entry.getName();
-                }
-                ClassEntry translatedOwner = getTranslatedClass(entry.getOwnerClassEntry());
-                TypeDescriptor translatedDesc = getTranslatedTypeDesc(entry.getDesc());
-                return new FieldEntry(translatedOwner, translatedName, translatedDesc);
-        }
-
-        private String translateFieldName(FieldEntry entry) {
-                // resolve the class entry
-                ClassEntry resolvedClassEntry = this.index.resolveEntryOwner(entry);
-                if (resolvedClassEntry != null) {
-                        // look for the class
-                        ClassMapping classMapping = findClassMapping(resolvedClassEntry);
-                        if (classMapping != null) {
-                                // look for the field
-                                FieldMapping mapping = this.direction.choose(
-                                                classMapping.getFieldByObf(entry.getName(), entry.getDesc()),
-                                                classMapping.getFieldByDeobf(entry.getName(), getTranslatedTypeDesc(entry.getDesc()))
-                                );
-                                if (mapping != null) {
-                                        return this.direction.choose(mapping.getDeobfName(), mapping.getObfName());
-                                }
-                        }
-                }
-                return null;
-        }
-
-        @Override
-        public MethodDefEntry getTranslatedMethodDef(MethodDefEntry entry) {
-                String translatedName = translateMethodName(entry);
-                if (translatedName == null) {
-                        translatedName = entry.getName();
-                }
-                ClassEntry translatedOwner = getTranslatedClass(entry.getOwnerClassEntry());
-                MethodDescriptor translatedDesc = getTranslatedMethodDesc(entry.getDesc());
-                Signature translatedSignature = getTranslatedSignature(entry.getSignature());
-                AccessFlags access = getMethodModifier(entry).transform(entry.getAccess());
-                return new MethodDefEntry(translatedOwner, translatedName, translatedDesc, translatedSignature, access);
-        }
-
-        @Override
-        public MethodEntry getTranslatedMethod(MethodEntry entry) {
-                String translatedName = translateMethodName(entry);
-                if (translatedName == null) {
-                        translatedName = entry.getName();
-                }
-                ClassEntry translatedOwner = getTranslatedClass(entry.getOwnerClassEntry());
-                MethodDescriptor translatedDesc = getTranslatedMethodDesc(entry.getDesc());
-                return new MethodEntry(translatedOwner, translatedName, translatedDesc);
-        }
-
-        private String translateMethodName(MethodEntry entry) {
-                // resolve the class entry
-                ClassEntry resolvedOwner = this.index.resolveEntryOwner(entry);
-                if (resolvedOwner != null) {
-                        // look for class
-                        ClassMapping classMapping = findClassMapping(resolvedOwner);
-                        if (classMapping != null) {
-                                // look for the method
-                                MethodMapping mapping = this.direction.choose(
-                                                classMapping.getMethodByObf(entry.getName(), entry.getDesc()),
-                                                classMapping.getMethodByDeobf(entry.getName(), getTranslatedMethodDesc(entry.getDesc()))
-                                );
-                                if (mapping != null) {
-                                        return this.direction.choose(mapping.getDeobfName(), mapping.getObfName());
-                                }
-                        }
-                }
-                return null;
-        }
-
-        @Override
-        public LocalVariableEntry getTranslatedVariable(LocalVariableEntry entry) {
-                String translatedArgumentName = translateLocalVariableName(entry);
-                if (translatedArgumentName == null) {
-                        translatedArgumentName = inheritLocalVariableName(entry);
-                }
-                if (translatedArgumentName == null) {
-                        translatedArgumentName = entry.getName();
-                }
-                // TODO: Translating arguments calls method translation.. Can we refactor the code in such a way that we don't need this?
-                MethodEntry translatedOwner = getTranslatedMethod(entry.getOwnerEntry());
-                return new LocalVariableEntry(translatedOwner, entry.getIndex(), translatedArgumentName, entry.isParameter());
-        }
-
-        @Override
-        public LocalVariableDefEntry getTranslatedVariableDef(LocalVariableDefEntry entry) {
-                String translatedArgumentName = translateLocalVariableName(entry);
-                if (translatedArgumentName == null) {
-                        translatedArgumentName = inheritLocalVariableName(entry);
-                }
-                // TODO: Translating arguments calls method translation.. Can we refactor the code in such a way that we don't need this?
-                MethodDefEntry translatedOwner = getTranslatedMethodDef(entry.getOwnerEntry());
-                TypeDescriptor translatedTypeDesc = getTranslatedTypeDesc(entry.getDesc());
-                return new LocalVariableDefEntry(translatedOwner, entry.getIndex(), translatedArgumentName != null ? translatedArgumentName : entry.getName(), entry.isParameter(), translatedTypeDesc);
-        }
-
-        @Override
-        public boolean hasClassMapping(ClassEntry entry) {
-                return classes.containsKey(entry.getName());
-        }
-
-        @Override
-        public boolean hasFieldMapping(FieldEntry entry) {
-                return translateFieldName(entry) != null;
-        }
-
-        @Override
-        public boolean hasMethodMapping(MethodEntry entry) {
-                return translateMethodName(entry) != null;
-        }
-
-        @Override
-        public boolean hasLocalVariableMapping(LocalVariableEntry entry) {
-                return translateLocalVariableName(entry) != null || inheritLocalVariableName(entry) != null;
-        }
-
-        // TODO: support not identical behavior (specific to constructor)
-        private String translateLocalVariableName(LocalVariableEntry entry) {
-                // look for identical behavior in superclasses
-                ClassEntry ownerEntry = entry.getOwnerClassEntry();
-                if (ownerEntry != null) {
-                        // look for the class
-                        ClassMapping classMapping = findClassMapping(ownerEntry);
-                        if (classMapping != null) {
-                                // look for the method
-                                MethodMapping methodMapping = this.direction.choose(
-                                                classMapping.getMethodByObf(entry.getMethodName(), entry.getMethodDesc()),
-                                                classMapping.getMethodByDeobf(entry.getMethodName(), getTranslatedMethodDesc(entry.getMethodDesc()))
-                                );
-                                if (methodMapping != null) {
-                                        int index = entry.getIndex();
-                                        return this.direction.choose(
-                                                        methodMapping.getDeobfLocalVariableName(index),
-                                                        methodMapping.getObfLocalVariableName(index)
-                                        );
-                                }
-                        }
-                }
-                return null;
-        }
-
-        private String inheritLocalVariableName(LocalVariableEntry entry) {
-                List<ClassEntry> ancestry = this.index.getAncestry(entry.getOwnerClassEntry());
-                // Check in mother class for the arg
-                for (ClassEntry ancestorEntry : ancestry) {
-                        LocalVariableEntry motherArg = entry.updateOwnership(ancestorEntry);
-                        if (this.index.entryExists(motherArg)) {
-                                String result = translateLocalVariableName(motherArg);
-                                if (result != null) {
-                                        return result;
-                                }
-                        }
-                }
-                return null;
-        }
-
-        @Override
-        public TypeDescriptor getTranslatedTypeDesc(TypeDescriptor desc) {
-                return desc.remap(this::remapClass);
-        }
-
-        @Override
-        public MethodDescriptor getTranslatedMethodDesc(MethodDescriptor descriptor) {
-                List<TypeDescriptor> arguments = descriptor.getArgumentDescs();
-                List<TypeDescriptor> translatedArguments = new ArrayList<>(arguments.size());
-                for (TypeDescriptor argument : arguments) {
-                        translatedArguments.add(getTranslatedTypeDesc(argument));
-                }
-                return new MethodDescriptor(translatedArguments, getTranslatedTypeDesc(descriptor.getReturnDesc()));
-        }
-
-        @Override
-        public Signature getTranslatedSignature(Signature signature) {
-                if (signature == null) {
-                        return null;
-                }
-                return signature.remap(this::remapClass);
-        }
-
-        private ClassMapping findClassMapping(ClassEntry entry) {
-                List<ClassMapping> mappingChain = getClassMappingChain(entry);
-                return mappingChain.get(mappingChain.size() - 1);
-        }
-
-        private List<ClassMapping> getClassMappingChain(ClassEntry entry) {
-
-                // get a list of all the classes in the hierarchy
-                String[] parts = entry.getName().split("\\$");
-                List<ClassMapping> mappingsChain = Lists.newArrayList();
-
-                // get mappings for the outer class
-                ClassMapping outerClassMapping = this.classes.get(parts[0]);
-                mappingsChain.add(outerClassMapping);
-
-                for (int i = 1; i < parts.length; i++) {
-
-                        // get mappings for the inner class
-                        ClassMapping innerClassMapping = null;
-                        if (outerClassMapping != null) {
-                                innerClassMapping = this.direction.choose(
-                                                outerClassMapping.getInnerClassByObfSimple(parts[i]),
-                                                outerClassMapping.getInnerClassByDeobfThenObfSimple(parts[i])
-                                );
-                        }
-                        mappingsChain.add(innerClassMapping);
-                        outerClassMapping = innerClassMapping;
-                }
-
-                assert (mappingsChain.size() == parts.length);
-                return mappingsChain;
-        }
-
-        private Mappings.EntryModifier getClassModifier(ClassEntry entry) {
-                ClassMapping classMapping = findClassMapping(entry);
-                if (classMapping != null) {
-                        return classMapping.getModifier();
-                }
-                return Mappings.EntryModifier.UNCHANGED;
-        }
-
-        private Mappings.EntryModifier getFieldModifier(FieldEntry entry) {
-                ClassMapping classMapping = findClassMapping(entry.getOwnerClassEntry());
-                if (classMapping != null) {
-                        FieldMapping fieldMapping = classMapping.getFieldByObf(entry);
-                        if (fieldMapping != null) {
-                                return fieldMapping.getModifier();
-                        }
-                }
-                return Mappings.EntryModifier.UNCHANGED;
-        }
-
-        private Mappings.EntryModifier getMethodModifier(MethodEntry entry) {
-                ClassMapping classMapping = findClassMapping(entry.getOwnerClassEntry());
-                if (classMapping != null) {
-                        MethodMapping methodMapping = classMapping.getMethodByObf(entry);
-                        if (methodMapping != null) {
-                                return methodMapping.getModifier();
-                        }
-                }
-                return Mappings.EntryModifier.UNCHANGED;
-        }
-
-        private String remapClass(String name) {
-                return getTranslatedClass(new ClassEntry(name)).getName();
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/FieldMapping.java b/src/main/java/cuchaz/enigma/mapping/FieldMapping.java
deleted file mode 100644
index 8fbe095..0000000
--- a/src/main/java/cuchaz/enigma/mapping/FieldMapping.java
+++ /dev/null
@@ -1,100 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping;
-
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.FieldEntry;
-import cuchaz.enigma.throwables.IllegalNameException;
-
-public class FieldMapping implements Comparable<FieldMapping>, MemberMapping<FieldEntry> {
-
-        private String obfName;
-        private String deobfName;
-        private TypeDescriptor obfDesc;
-        private Mappings.EntryModifier modifier;
-
-        public FieldMapping(String obfName, TypeDescriptor obfDesc, String deobfName, Mappings.EntryModifier modifier) {
-                this.obfName = obfName;
-                this.deobfName = NameValidator.validateFieldName(deobfName);
-                this.obfDesc = obfDesc;
-                this.modifier = modifier;
-        }
-
-        @Override
-        public FieldEntry getObfEntry(ClassEntry classEntry) {
-                return new FieldEntry(classEntry, this.obfName, this.obfDesc);
-        }
-
-        @Override
-        public String getObfName() {
-                return this.obfName;
-        }
-
-        public void setObfName(String name) {
-                try {
-                        NameValidator.validateMethodName(name);
-                } catch (IllegalNameException ex) {
-                        // Invalid name, damn obfuscation! Map to a deob name with another name to avoid issues
-                        if (this.deobfName == null) {
-                                System.err.println("WARNING: " + name + " is conflicting, auto deobfuscate to " + (name + "_auto_deob"));
-                                setDeobfName(name + "_auto_deob");
-                        }
-                }
-                this.obfName = name;
-        }
-
-        public String getDeobfName() {
-                return this.deobfName;
-        }
-
-        public void setDeobfName(String val) {
-                this.deobfName = NameValidator.validateFieldName(val);
-        }
-
-        public TypeDescriptor getObfDesc() {
-                return this.obfDesc;
-        }
-
-        public void setObfDesc(TypeDescriptor val) {
-                this.obfDesc = val;
-        }
-
-        public Mappings.EntryModifier getModifier() {
-                return modifier;
-        }
-
-        public void setModifier(Mappings.EntryModifier modifier) {
-                this.modifier = modifier;
-        }
-
-        @Override
-        public int compareTo(FieldMapping other) {
-                return (this.obfName + this.obfDesc).compareTo(other.obfName + other.obfDesc);
-        }
-
-        public boolean renameObfClass(final String oldObfClassName, final String newObfClassName) {
-                // rename obf classes in the desc
-                TypeDescriptor newDesc = this.obfDesc.remap(className -> {
-                        if (className.equals(oldObfClassName)) {
-                                return newObfClassName;
-                        }
-                        return className;
-                });
-
-                if (!newDesc.equals(this.obfDesc)) {
-                        this.obfDesc = newDesc;
-                        return true;
-                }
-                return false;
-        }
-
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/LocalVariableMapping.java b/src/main/java/cuchaz/enigma/mapping/LocalVariableMapping.java
deleted file mode 100644
index bfe66b2..0000000
--- a/src/main/java/cuchaz/enigma/mapping/LocalVariableMapping.java
+++ /dev/null
@@ -1,58 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping;
-
-import cuchaz.enigma.mapping.entry.LocalVariableEntry;
-import cuchaz.enigma.mapping.entry.MethodEntry;
-
-public class LocalVariableMapping implements Comparable<LocalVariableMapping> {
-
-        private int index;
-        private String name;
-
-        // NOTE: this argument order is important for the MethodReader/MethodWriter
-        public LocalVariableMapping(int index, String name) {
-                this.index = index;
-                this.name = NameValidator.validateArgumentName(name);
-        }
-
-        public LocalVariableMapping(LocalVariableMapping other) {
-                this.index = other.index;
-                this.name = other.name;
-        }
-
-        public int getIndex() {
-                return this.index;
-        }
-
-        public String getName() {
-                return this.name;
-        }
-
-        public void setName(String val) {
-                this.name = NameValidator.validateArgumentName(val);
-        }
-
-        @Deprecated
-        public LocalVariableEntry getObfEntry(MethodEntry methodEntry) {
-                return new LocalVariableEntry(methodEntry, index, name);
-        }
-
-        public LocalVariableEntry getObfEntry(MethodEntry methodEntry, boolean parameter) {
-                return new LocalVariableEntry(methodEntry, index, name, parameter);
-        }
-
-        @Override
-        public int compareTo(LocalVariableMapping other) {
-                return Integer.compare(this.index, other.index);
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/Mappings.java b/src/main/java/cuchaz/enigma/mapping/Mappings.java
deleted file mode 100644
index c865079..0000000
--- a/src/main/java/cuchaz/enigma/mapping/Mappings.java
+++ /dev/null
@@ -1,268 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping;
-
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
-import com.google.common.collect.Sets;
-import cuchaz.enigma.analysis.TranslationIndex;
-import cuchaz.enigma.api.EnigmaPlugin;
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.MethodEntry;
-import cuchaz.enigma.throwables.MappingConflict;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.*;
-import java.util.stream.Collectors;
-
-public class Mappings {
-
-        private final FormatType originMapping;
-        protected Map<String, ClassMapping> classesByObf;
-        protected Map<String, ClassMapping> classesByDeobf;
-        private Mappings previousState;
-
-        public Mappings() {
-                this(FormatType.ENIGMA_DIRECTORY);
-        }
-
-        public Mappings(FormatType originMapping) {
-                this.originMapping = originMapping;
-                this.classesByObf = Maps.newHashMap();
-                this.classesByDeobf = Maps.newHashMap();
-        }
-
-        public Collection<ClassMapping> classes() {
-                assert (this.classesByObf.size() >= this.classesByDeobf.size());
-                return this.classesByObf.values();
-        }
-
-        public void addClassMapping(ClassMapping classMapping) throws MappingConflict {
-                if (this.classesByObf.containsKey(classMapping.getObfFullName())) {
-                        throw new MappingConflict("class", classMapping.getObfFullName(), this.classesByObf.get(classMapping.getObfFullName()).getObfFullName());
-                }
-                this.classesByObf.put(classMapping.getObfFullName(), classMapping);
-
-                if (classMapping.getDeobfName() != null) {
-                        if (this.classesByDeobf.containsKey(classMapping.getDeobfName())) {
-                                throw new MappingConflict("class", classMapping.getDeobfName(), this.classesByDeobf.get(classMapping.getDeobfName()).getDeobfName());
-                        }
-                        this.classesByDeobf.put(classMapping.getDeobfName(), classMapping);
-                }
-        }
-
-        public void removeClassMapping(ClassMapping classMapping) {
-                boolean obfWasRemoved = this.classesByObf.remove(classMapping.getObfFullName()) != null;
-                assert (obfWasRemoved);
-                if (classMapping.getDeobfName() != null) {
-                        boolean deobfWasRemoved = this.classesByDeobf.remove(classMapping.getDeobfName()) != null;
-                        assert (deobfWasRemoved);
-                }
-        }
-
-        public ClassMapping getClassByObf(ClassEntry entry) {
-                return getClassByObf(entry.getName());
-        }
-
-        public ClassMapping getClassByObf(String obfName) {
-                return this.classesByObf.get(obfName);
-        }
-
-        public ClassMapping getClassByDeobf(ClassEntry entry) {
-                return getClassByDeobf(entry.getName());
-        }
-
-        public ClassMapping getClassByDeobf(String deobfName) {
-                return this.classesByDeobf.get(deobfName);
-        }
-
-        public void setClassDeobfName(ClassMapping classMapping, String deobfName) {
-                if (classMapping.getDeobfName() != null) {
-                        boolean wasRemoved = this.classesByDeobf.remove(classMapping.getDeobfName()) != null;
-                        assert (wasRemoved);
-                }
-                classMapping.setDeobfName(deobfName);
-                if (deobfName != null) {
-                        boolean wasAdded = this.classesByDeobf.put(deobfName, classMapping) == null;
-                        assert (wasAdded);
-                }
-        }
-
-        public Translator getTranslator(TranslationDirection direction, TranslationIndex index) {
-                switch (direction) {
-                        case DEOBFUSCATING:
-
-                                return new DirectionalTranslator(direction, this.classesByObf, index);
-
-                        case OBFUSCATING:
-
-                                // fill in the missing deobf class entries with obf entries
-                                Map<String, ClassMapping> classes = Maps.newHashMap();
-                                for (ClassMapping classMapping : classes()) {
-                                        if (classMapping.getDeobfName() != null) {
-                                                classes.put(classMapping.getDeobfName(), classMapping);
-                                        } else {
-                                                classes.put(classMapping.getObfFullName(), classMapping);
-                                        }
-                                }
-
-                                // translate the translation index
-                                // NOTE: this isn't actually recursive
-                                TranslationIndex deobfIndex = new TranslationIndex(index, getTranslator(TranslationDirection.DEOBFUSCATING, index));
-
-                                return new DirectionalTranslator(direction, classes, deobfIndex);
-
-                        default:
-                                throw new Error("Invalid translation direction!");
-                }
-        }
-
-        @Override
-        public String toString() {
-                StringBuilder buf = new StringBuilder();
-                for (ClassMapping classMapping : this.classesByObf.values()) {
-                        buf.append(classMapping);
-                        buf.append("\n");
-                }
-                return buf.toString();
-        }
-
-        public void renameObfClass(String oldObfName, String newObfName) {
-                new ArrayList<>(classes()).stream().filter(classMapping -> classMapping.renameObfClass(oldObfName, newObfName)).forEach(classMapping -> {
-                        boolean wasRemoved = this.classesByObf.remove(oldObfName) != null;
-                        assert (wasRemoved);
-                        boolean wasAdded = this.classesByObf.put(newObfName, classMapping) == null;
-                        assert (wasAdded);
-                });
-        }
-
-        public Set<String> getAllObfClassNames() {
-                final Set<String> classNames = Sets.newHashSet();
-                for (ClassMapping classMapping : classes()) {
-
-                        // add the class name
-                        classNames.add(classMapping.getObfFullName());
-
-                        // add classes from method signatures
-                        for (MethodMapping methodMapping : classMapping.methods()) {
-                                for (TypeDescriptor desc : methodMapping.getObfDesc().types()) {
-                                        if (desc.containsType()) {
-                                                classNames.add(desc.getTypeEntry().getClassName());
-                                        }
-                                }
-                        }
-                }
-                return classNames;
-        }
-
-        public boolean containsDeobfClass(String deobfName) {
-                return this.classesByDeobf.containsKey(deobfName);
-        }
-
-        public boolean containsDeobfField(ClassEntry obfClassEntry, String deobfName, TypeDescriptor obfDesc) {
-                ClassMapping classMapping = this.classesByObf.get(obfClassEntry.getName());
-                return classMapping != null && classMapping.containsDeobfField(deobfName, obfDesc);
-        }
-
-        public boolean containsDeobfField(ClassEntry obfClassEntry, String deobfName) {
-                ClassMapping classMapping = this.classesByObf.get(obfClassEntry.getName());
-                if (classMapping != null)
-                        for (FieldMapping fieldMapping : classMapping.fields())
-                                if (deobfName.equals(fieldMapping.getDeobfName()) || deobfName.equals(fieldMapping.getObfName()))
-                                        return true;
-
-                return false;
-        }
-
-        public boolean containsDeobfMethod(ClassEntry obfClassEntry, String deobfName, MethodDescriptor obfDescriptor) {
-                ClassMapping classMapping = this.classesByObf.get(obfClassEntry.getName());
-                return classMapping != null && classMapping.containsDeobfMethod(deobfName, obfDescriptor);
-        }
-
-        public boolean containsArgument(MethodEntry obfMethodEntry, String name) {
-                ClassMapping classMapping = this.classesByObf.get(obfMethodEntry.getClassName());
-                return classMapping != null && classMapping.containsArgument(obfMethodEntry, name);
-        }
-
-        public List<ClassMapping> getClassMappingChain(ClassEntry obfClass) {
-                List<ClassMapping> mappingChain = Lists.newArrayList();
-                ClassMapping classMapping = null;
-                for (ClassEntry obfClassEntry : obfClass.getClassChain()) {
-                        if (mappingChain.isEmpty()) {
-                                classMapping = this.classesByObf.get(obfClassEntry.getName());
-                        } else if (classMapping != null) {
-                                classMapping = classMapping.getInnerClassByObfSimple(obfClassEntry.getInnermostClassName());
-                        }
-                        mappingChain.add(classMapping);
-                }
-                return mappingChain;
-        }
-
-        public FormatType getOriginMappingFormat() {
-                return originMapping;
-        }
-
-        public void savePreviousState() {
-                this.previousState = new Mappings(this.originMapping);
-                this.previousState.classesByDeobf = new HashMap<>();
-                for (Map.Entry<String, ClassMapping> entry : this.classesByDeobf.entrySet()) {
-                        this.previousState.classesByDeobf.put(entry.getKey(), entry.getValue().copy());
-                }
-                this.previousState.classesByObf = new HashMap<>();
-                for (Map.Entry<String, ClassMapping> entry : this.classesByObf.entrySet()) {
-                        this.previousState.classesByObf.put(entry.getKey(), entry.getValue().copy());
-                }
-                classesByDeobf.values().forEach(ClassMapping::resetDirty);
-                classesByObf.values().forEach(ClassMapping::resetDirty);
-        }
-
-        public void saveEnigmaMappings(File file, boolean isDirectoryFormat) throws IOException {
-                new MappingsEnigmaWriter().write(file, this, isDirectoryFormat);
-                this.savePreviousState();
-        }
-
-        public void saveSRGMappings(File file) throws IOException {
-                new MappingsSRGWriter().write(file, this);
-        }
-
-        public Mappings getPreviousState() {
-                return previousState;
-        }
-
-        public enum FormatType {
-                ENIGMA_FILE, ENIGMA_DIRECTORY, TINY_FILE, SRG_FILE
-        }
-
-        public enum EntryModifier {
-                UNCHANGED, PUBLIC, PROTECTED, PRIVATE;
-
-                public String getFormattedName() {
-                        return " ACC:" + super.toString();
-                }
-
-                public AccessFlags transform(AccessFlags access) {
-                        switch (this) {
-                                case PUBLIC:
-                                        return access.setPublic();
-                                case PROTECTED:
-                                        return access.setProtected();
-                                case PRIVATE:
-                                        return access.setPrivate();
-                                case UNCHANGED:
-                                default:
-                                        return access;
-                        }
-                }
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/MappingsChecker.java b/src/main/java/cuchaz/enigma/mapping/MappingsChecker.java
deleted file mode 100644
index a42f255..0000000
--- a/src/main/java/cuchaz/enigma/mapping/MappingsChecker.java
+++ /dev/null
@@ -1,101 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping;
-
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
-import cuchaz.enigma.analysis.JarIndex;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.EntryFactory;
-import cuchaz.enigma.mapping.entry.FieldEntry;
-import cuchaz.enigma.mapping.entry.MethodEntry;
-
-import java.util.Map;
-
-public class MappingsChecker {
-
-        private JarIndex index;
-        private Map<ClassEntry, ClassMapping> droppedClassMappings;
-        private Map<ClassEntry, ClassMapping> droppedInnerClassMappings;
-        private Map<FieldEntry, FieldMapping> droppedFieldMappings;
-        private Map<MethodEntry, MethodMapping> droppedMethodMappings;
-
-        public MappingsChecker(JarIndex index) {
-                this.index = index;
-                this.droppedClassMappings = Maps.newHashMap();
-                this.droppedInnerClassMappings = Maps.newHashMap();
-                this.droppedFieldMappings = Maps.newHashMap();
-                this.droppedMethodMappings = Maps.newHashMap();
-        }
-
-        public Map<ClassEntry, ClassMapping> getDroppedClassMappings() {
-                return this.droppedClassMappings;
-        }
-
-        public Map<ClassEntry, ClassMapping> getDroppedInnerClassMappings() {
-                return this.droppedInnerClassMappings;
-        }
-
-        public Map<FieldEntry, FieldMapping> getDroppedFieldMappings() {
-                return this.droppedFieldMappings;
-        }
-
-        public Map<MethodEntry, MethodMapping> getDroppedMethodMappings() {
-                return this.droppedMethodMappings;
-        }
-
-        public void dropBrokenMappings(Mappings mappings) {
-                for (ClassMapping classMapping : Lists.newArrayList(mappings.classes())) {
-                        if (!checkClassMapping(classMapping)) {
-                                mappings.removeClassMapping(classMapping);
-                                this.droppedClassMappings.put(EntryFactory.getObfClassEntry(this.index, classMapping), classMapping);
-                        }
-                }
-        }
-
-        private boolean checkClassMapping(ClassMapping classMapping) {
-
-                // check the class
-                ClassEntry classEntry = EntryFactory.getObfClassEntry(this.index, classMapping);
-                if (!this.index.getObfClassEntries().contains(classEntry)) {
-                        return false;
-                }
-
-                // check the fields
-                for (FieldMapping fieldMapping : Lists.newArrayList(classMapping.fields())) {
-                        FieldEntry obfFieldEntry = EntryFactory.getObfFieldEntry(classMapping, fieldMapping);
-                        if (!this.index.containsObfField(obfFieldEntry)) {
-                                classMapping.removeFieldMapping(fieldMapping);
-                                this.droppedFieldMappings.put(obfFieldEntry, fieldMapping);
-                        }
-                }
-
-                // check methods
-                for (MethodMapping methodMapping : Lists.newArrayList(classMapping.methods())) {
-                        MethodEntry obfMethodEntry = EntryFactory.getObfMethodEntry(classEntry, methodMapping);
-                        if (!this.index.containsObfMethod(obfMethodEntry)) {
-                                classMapping.removeMethodMapping(methodMapping);
-                                this.droppedMethodMappings.put(obfMethodEntry, methodMapping);
-                        }
-                }
-
-                // check inner classes
-                for (ClassMapping innerClassMapping : Lists.newArrayList(classMapping.innerClasses())) {
-                        if (!checkClassMapping(innerClassMapping)) {
-                                classMapping.removeInnerClassMapping(innerClassMapping);
-                                this.droppedInnerClassMappings.put(EntryFactory.getObfClassEntry(this.index, innerClassMapping), innerClassMapping);
-                        }
-                }
-
-                return true;
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/MappingsEnigmaReader.java b/src/main/java/cuchaz/enigma/mapping/MappingsEnigmaReader.java
deleted file mode 100644
index ddbee76..0000000
--- a/src/main/java/cuchaz/enigma/mapping/MappingsEnigmaReader.java
+++ /dev/null
@@ -1,186 +0,0 @@
-package cuchaz.enigma.mapping;
-
-import com.google.common.base.Charsets;
-import com.google.common.collect.Queues;
-import cuchaz.enigma.throwables.MappingConflict;
-import cuchaz.enigma.throwables.MappingParseException;
-
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.util.Deque;
-import java.util.function.Supplier;
-
-public class MappingsEnigmaReader {
-
-        public Mappings read(File file) throws IOException, MappingParseException {
-                Mappings mappings;
-
-                // Multiple file
-                if (file.isDirectory()) {
-                        mappings = new Mappings(Mappings.FormatType.ENIGMA_DIRECTORY);
-                        readDirectory(mappings, file);
-                } else {
-                        mappings = new Mappings();
-                        readFile(mappings, file);
-                }
-                return mappings;
-        }
-
-        public void readDirectory(Mappings mappings, File directory) throws IOException, MappingParseException {
-                File[] files = directory.listFiles();
-                if (files != null) {
-                        for (File file : files) {
-                                if (file.isFile() && !file.getName().startsWith(".") && file.getName().endsWith(".mapping"))
-                                        readFile(mappings, file);
-                                else if (file.isDirectory())
-                                        readDirectory(mappings, file.getAbsoluteFile());
-                        }
-                        mappings.savePreviousState();
-                } else
-                        throw new IOException("Cannot access directory" + directory.getAbsolutePath());
-        }
-
-        public Mappings readFile(Mappings mappings, File file) throws IOException, MappingParseException {
-                return readFileStream(mappings, new FileInputStream(file), file::getAbsolutePath);
-        }
-
-        public Mappings readFileStream(Mappings mappings, InputStream stream, Supplier<String> filenameSupplier) throws IOException, MappingParseException {
-                try (BufferedReader in = new BufferedReader(new InputStreamReader(stream, Charsets.UTF_8))) {
-                        Deque<Object> mappingStack = Queues.newArrayDeque();
-
-                        int lineNumber = 0;
-                        String line;
-                        while ((line = in.readLine()) != null) {
-                                lineNumber++;
-
-                                // strip comments
-                                int commentPos = line.indexOf('#');
-                                if (commentPos >= 0) {
-                                        line = line.substring(0, commentPos);
-                                }
-
-                                // skip blank lines
-                                if (line.trim().length() <= 0) {
-                                        continue;
-                                }
-
-                                // get the indent of this line
-                                int indent = 0;
-                                for (int i = 0; i < line.length(); i++) {
-                                        if (line.charAt(i) != '\t') {
-                                                break;
-                                        }
-                                        indent++;
-                                }
-
-                                // handle stack pops
-                                while (indent < mappingStack.size()) {
-                                        mappingStack.pop();
-                                }
-
-                                String[] parts = line.trim().split("\\s");
-                                try {
-                                        // read the first token
-                                        String token = parts[0];
-
-                                        if (token.equalsIgnoreCase("CLASS")) {
-                                                ClassMapping classMapping;
-                                                if (indent <= 0) {
-                                                        // outer class
-                                                        classMapping = readClass(parts, false);
-                                                        mappings.addClassMapping(classMapping);
-                                                } else {
-
-                                                        // inner class
-                                                        if (!(mappingStack.peek() instanceof ClassMapping)) {
-                                                                throw new MappingParseException(filenameSupplier, lineNumber, "Unexpected CLASS entry here!");
-                                                        }
-
-                                                        classMapping = readClass(parts, true);
-                                                        ((ClassMapping) mappingStack.peek()).addInnerClassMapping(classMapping);
-                                                }
-                                                mappingStack.push(classMapping);
-                                        } else if (token.equalsIgnoreCase("FIELD")) {
-                                                if (mappingStack.isEmpty() || !(mappingStack.peek() instanceof ClassMapping)) {
-                                                        throw new MappingParseException(filenameSupplier, lineNumber, "Unexpected FIELD entry here!");
-                                                }
-                                                ((ClassMapping) mappingStack.peek()).addFieldMapping(readField(parts));
-                                        } else if (token.equalsIgnoreCase("METHOD")) {
-                                                if (mappingStack.isEmpty() || !(mappingStack.peek() instanceof ClassMapping)) {
-                                                        throw new MappingParseException(filenameSupplier, lineNumber, "Unexpected METHOD entry here!");
-                                                }
-                                                MethodMapping methodMapping = readMethod(parts);
-                                                ((ClassMapping) mappingStack.peek()).addMethodMapping(methodMapping);
-                                                mappingStack.push(methodMapping);
-                                        } else if (token.equalsIgnoreCase("ARG")) {
-                                                if (mappingStack.isEmpty() || !(mappingStack.peek() instanceof MethodMapping)) {
-                                                        throw new MappingParseException(filenameSupplier, lineNumber, "Unexpected ARG entry here!");
-                                                }
-                                                ((MethodMapping) mappingStack.peek()).addArgumentMapping(readArgument(parts));
-                                        }
-                                } catch (ArrayIndexOutOfBoundsException | IllegalArgumentException ex) {
-                                        throw new MappingParseException(filenameSupplier, lineNumber, "Malformed line:\n" + line);
-                                } catch (MappingConflict e) {
-                                        throw new MappingParseException(filenameSupplier, lineNumber, e.getMessage());
-                                }
-                        }
-                        return mappings;
-                }
-        }
-
-        private LocalVariableMapping readArgument(String[] parts) {
-                return new LocalVariableMapping(Integer.parseInt(parts[1]), parts[2]);
-        }
-
-        private ClassMapping readClass(String[] parts, boolean makeSimple) {
-                if (parts.length == 2) {
-                        return new ClassMapping(parts[1]);
-                } else if (parts.length == 3) {
-                        boolean access = parts[2].startsWith("ACC:");
-                        ClassMapping mapping;
-                        if (access)
-                                mapping = new ClassMapping(parts[1], null, Mappings.EntryModifier.valueOf(parts[2].substring(4)));
-                        else
-                                mapping = new ClassMapping(parts[1], parts[2]);
-
-                        return mapping;
-                } else if (parts.length == 4)
-                        return new ClassMapping(parts[1], parts[2], Mappings.EntryModifier.valueOf(parts[3].substring(4)));
-                return null;
-        }
-
-        /* TEMP */
-        protected FieldMapping readField(String[] parts) {
-                FieldMapping mapping = null;
-                if (parts.length == 4) {
-                        boolean access = parts[3].startsWith("ACC:");
-                        if (access)
-                                mapping = new FieldMapping(parts[1], new TypeDescriptor(parts[2]), null,
-                                        Mappings.EntryModifier.valueOf(parts[3].substring(4)));
-                        else
-                                mapping = new FieldMapping(parts[1], new TypeDescriptor(parts[3]), parts[2], Mappings.EntryModifier.UNCHANGED);
-                } else if (parts.length == 5)
-                        mapping = new FieldMapping(parts[1], new TypeDescriptor(parts[3]), parts[2], Mappings.EntryModifier.valueOf(parts[4].substring(4)));
-                return mapping;
-        }
-
-        private MethodMapping readMethod(String[] parts) {
-                MethodMapping mapping = null;
-                if (parts.length == 3)
-                        mapping = new MethodMapping(parts[1], new MethodDescriptor(parts[2]));
-                else if (parts.length == 4) {
-                        boolean access = parts[3].startsWith("ACC:");
-                        if (access)
-                                mapping = new MethodMapping(parts[1], new MethodDescriptor(parts[2]), null, Mappings.EntryModifier.valueOf(parts[3].substring(4)));
-                        else
-                                mapping = new MethodMapping(parts[1], new MethodDescriptor(parts[3]), parts[2]);
-                } else if (parts.length == 5)
-                        mapping = new MethodMapping(parts[1], new MethodDescriptor(parts[3]), parts[2],
-                                Mappings.EntryModifier.valueOf(parts[4].substring(4)));
-                return mapping;
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/MappingsEnigmaWriter.java b/src/main/java/cuchaz/enigma/mapping/MappingsEnigmaWriter.java
deleted file mode 100644
index e3302b1..0000000
--- a/src/main/java/cuchaz/enigma/mapping/MappingsEnigmaWriter.java
+++ /dev/null
@@ -1,160 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- *
- * Contributors:
- *     Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping;
-
-import com.google.common.base.Charsets;
-
-import java.io.*;
-import java.util.*;
-
-public class MappingsEnigmaWriter {
-
-        public void write(File out, Mappings mappings, boolean isDirectoryFormat) throws IOException {
-                if (!isDirectoryFormat) {
-                        PrintWriter outputWriter = new PrintWriter(new OutputStreamWriter(new FileOutputStream(out), Charsets.UTF_8));
-                        write(outputWriter, mappings);
-                        outputWriter.close();
-                } else
-                        writeAsDirectory(out, mappings);
-        }
-
-        public void writeAsDirectory(File target, Mappings mappings) throws IOException {
-                if (!target.exists() && !target.mkdirs())
-                        throw new IOException("Cannot create mapping directory!");
-
-                Mappings previousState = mappings.getPreviousState();
-                for (ClassMapping classMapping : sorted(mappings.classes())) {
-                        File result = new File(target, classMapping.getSaveName() + ".mapping");
-
-                        if (!classMapping.isDirty()) {
-                                continue;
-                        }
-
-                        if (classMapping.isEmpty()) {
-                                if (result.exists()) {
-                                        result.delete();
-                                }
-                                continue;
-                        }
-
-                        if (previousState != null) {
-                                ClassMapping previousClass = previousState.classesByObf.get(classMapping.getObfFullName());
-                                File previousFile;
-                                if (previousClass != null) {
-                                        previousFile = new File(target, previousClass.getSaveName() + ".mapping");
-                                } else {
-                                        previousFile = new File(target, classMapping.getObfFullName() + ".mapping");
-                                }
-                                if (previousFile.exists() && !previousFile.delete()) {
-                                        System.err.println("Failed to delete old class mapping " + previousFile.getName());
-                                }
-                        }
-
-                        File packageFile = result.getParentFile();
-                        if (!packageFile.exists()) {
-                                packageFile.mkdirs();
-                        }
-                        result.createNewFile();
-
-                        try (PrintWriter outputWriter = new PrintWriter(new BufferedWriter(new FileWriter(result)))) {
-                                write(outputWriter, classMapping, 0);
-                        }
-                }
-
-                // Remove dropped mappings
-                if (previousState != null) {
-                        Set<ClassMapping> droppedClassMappings = new HashSet<>(previousState.classes());
-                        droppedClassMappings.removeAll(mappings.classes());
-                        for (ClassMapping droppedMapping : droppedClassMappings) {
-                                File result = new File(target, droppedMapping.getSaveName() + ".mapping");
-                                if (!result.exists()) {
-                                        continue;
-                                }
-                                if (!result.delete()) {
-                                        System.err.println("Failed to delete dropped class mapping " + result.getName());
-                                }
-                        }
-                }
-        }
-
-        public void write(PrintWriter out, Mappings mappings) throws IOException {
-                for (ClassMapping classMapping : sorted(mappings.classes())) {
-                        write(out, classMapping, 0);
-                }
-        }
-
-        protected void write(PrintWriter out, ClassMapping classMapping, int depth) throws IOException {
-                if (classMapping.getDeobfName() == null) {
-                        out.format("%sCLASS %s%s\n", getIndent(depth), classMapping.getObfFullName(),
-                                        classMapping.getModifier() == Mappings.EntryModifier.UNCHANGED ? "" : classMapping.getModifier().getFormattedName());
-                } else {
-                        out.format("%sCLASS %s %s%s\n", getIndent(depth), classMapping.getObfFullName(), classMapping.getDeobfName(),
-                                        classMapping.getModifier() == Mappings.EntryModifier.UNCHANGED ? "" : classMapping.getModifier().getFormattedName());
-                }
-
-                for (ClassMapping innerClassMapping : sorted(classMapping.innerClasses())) {
-                        write(out, innerClassMapping, depth + 1);
-                }
-
-                for (FieldMapping fieldMapping : sorted(classMapping.fields())) {
-                        write(out, fieldMapping, depth + 1);
-                }
-
-                for (MethodMapping methodMapping : sorted(classMapping.methods())) {
-                        write(out, methodMapping, depth + 1);
-                }
-        }
-
-        private void write(PrintWriter out, FieldMapping fieldMapping, int depth) {
-                if (fieldMapping.getDeobfName() == null)
-                        out.format("%sFIELD %s %s%s\n", getIndent(depth), fieldMapping.getObfName(), fieldMapping.getObfDesc().toString(),
-                                        fieldMapping.getModifier() == Mappings.EntryModifier.UNCHANGED ? "" : fieldMapping.getModifier().getFormattedName());
-                else
-                        out.format("%sFIELD %s %s %s%s\n", getIndent(depth), fieldMapping.getObfName(), fieldMapping.getDeobfName(), fieldMapping.getObfDesc().toString(),
-                                        fieldMapping.getModifier() == Mappings.EntryModifier.UNCHANGED ? "" : fieldMapping.getModifier().getFormattedName());
-        }
-
-        private void write(PrintWriter out, MethodMapping methodMapping, int depth) throws IOException {
-                if (methodMapping.isObfuscated()) {
-                        out.format("%sMETHOD %s %s%s\n", getIndent(depth), methodMapping.getObfName(), methodMapping.getObfDesc(),
-                                        methodMapping.getModifier() == Mappings.EntryModifier.UNCHANGED ? "" : methodMapping.getModifier().getFormattedName());
-                } else {
-                        out.format("%sMETHOD %s %s %s%s\n", getIndent(depth), methodMapping.getObfName(), methodMapping.getDeobfName(), methodMapping.getObfDesc(),
-                                        methodMapping.getModifier() == Mappings.EntryModifier.UNCHANGED ? "" : methodMapping.getModifier().getFormattedName());
-                }
-
-                for (LocalVariableMapping localVariableMapping : sorted(methodMapping.arguments())) {
-                        write(out, localVariableMapping, depth + 1);
-                }
-        }
-
-        private void write(PrintWriter out, LocalVariableMapping localVariableMapping, int depth) {
-                out.format("%sARG %d %s\n", getIndent(depth), localVariableMapping.getIndex(), localVariableMapping.getName());
-        }
-
-        protected <T extends Comparable<T>> List<T> sorted(Iterable<T> classes) {
-                List<T> out = new ArrayList<>();
-                for (T t : classes) {
-                        out.add(t);
-                }
-                Collections.sort(out);
-                return out;
-        }
-
-        private String getIndent(int depth) {
-                StringBuilder buf = new StringBuilder();
-                for (int i = 0; i < depth; i++) {
-                        buf.append("\t");
-                }
-                return buf.toString();
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/MappingsRenamer.java b/src/main/java/cuchaz/enigma/mapping/MappingsRenamer.java
deleted file mode 100644
index 8ef4f12..0000000
--- a/src/main/java/cuchaz/enigma/mapping/MappingsRenamer.java
+++ /dev/null
@@ -1,365 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping;
-
-import com.google.common.collect.Lists;
-import cuchaz.enigma.analysis.JarIndex;
-import cuchaz.enigma.mapping.entry.*;
-import cuchaz.enigma.throwables.IllegalNameException;
-import cuchaz.enigma.throwables.MappingConflict;
-
-import java.io.IOException;
-import java.io.ObjectOutputStream;
-import java.io.OutputStream;
-import java.util.List;
-import java.util.Set;
-import java.util.zip.GZIPOutputStream;
-
-public class MappingsRenamer {
-
-        private final JarIndex index;
-        private final ReferencedEntryPool entryPool;
-        private Mappings mappings;
-
-        public MappingsRenamer(JarIndex index, Mappings mappings, ReferencedEntryPool entryPool) {
-                this.index = index;
-                this.mappings = mappings;
-                this.entryPool = entryPool;
-        }
-
-        public void setMappings(Mappings mappings) {
-                this.mappings = mappings;
-        }
-
-        public void setClassName(ClassEntry obf, String deobfName) {
-
-                deobfName = NameValidator.validateClassName(deobfName, !obf.isInnerClass());
-
-                List<ClassMapping> mappingChain = getOrCreateClassMappingChain(obf);
-                if (mappingChain.size() == 1) {
-
-                        if (deobfName != null) {
-                                // make sure we don't rename to an existing obf or deobf class
-                                if (mappings.containsDeobfClass(deobfName) || index.containsObfClass(entryPool.getClass(deobfName))) {
-                                        throw new IllegalNameException(deobfName, "There is already a class with that name");
-                                }
-                        }
-
-                        ClassMapping classMapping = mappingChain.get(0);
-                        mappings.setClassDeobfName(classMapping, deobfName);
-
-                } else {
-
-                        ClassMapping outerClassMapping = mappingChain.get(mappingChain.size() - 2);
-
-                        if (deobfName != null) {
-                                // make sure we don't rename to an existing obf or deobf inner class
-                                if (outerClassMapping.hasInnerClassByDeobf(deobfName) || outerClassMapping.hasInnerClassByObfSimple(deobfName)) {
-                                        throw new IllegalNameException(deobfName, "There is already a class with that name");
-                                }
-                        }
-
-                        outerClassMapping.setInnerClassName(obf, deobfName);
-                }
-        }
-
-        public void removeClassMapping(ClassEntry obf) {
-                setClassName(obf, null);
-        }
-
-        public void markClassAsDeobfuscated(ClassEntry obf) {
-                String deobfName = obf.isInnerClass() ? obf.getInnermostClassName() : obf.getName();
-                List<ClassMapping> mappingChain = getOrCreateClassMappingChain(obf);
-                if (mappingChain.size() == 1) {
-                        ClassMapping classMapping = mappingChain.get(0);
-                        mappings.setClassDeobfName(classMapping, deobfName);
-                } else {
-                        ClassMapping outerClassMapping = mappingChain.get(mappingChain.size() - 2);
-                        outerClassMapping.setInnerClassName(obf, deobfName);
-                }
-        }
-
-        public void setFieldName(FieldEntry obf, String deobfName) {
-                deobfName = NameValidator.validateFieldName(deobfName);
-                FieldEntry targetEntry = entryPool.getField(obf.getOwnerClassEntry(), deobfName, obf.getDesc());
-                ClassEntry definedClass = null;
-                if (mappings.containsDeobfField(obf.getOwnerClassEntry(), deobfName) || index.containsEntryWithSameName(targetEntry)) {
-                        definedClass = obf.getOwnerClassEntry();
-                } else {
-                        for (ClassEntry ancestorEntry : this.index.getTranslationIndex().getAncestry(obf.getOwnerClassEntry())) {
-                                if (mappings.containsDeobfField(ancestorEntry, deobfName) || index.containsEntryWithSameName(targetEntry.updateOwnership(ancestorEntry))) {
-                                        definedClass = ancestorEntry;
-                                        break;
-                                }
-                        }
-                }
-
-                if (definedClass != null) {
-                        Translator translator = mappings.getTranslator(TranslationDirection.DEOBFUSCATING, index.getTranslationIndex());
-                        String className = translator.getTranslatedClass(entryPool.getClass(definedClass.getClassName())).getName();
-                        if (className == null)
-                                className = definedClass.getClassName();
-                        throw new IllegalNameException(deobfName, "There is already a field with that name in " + className);
-                }
-
-                ClassMapping classMapping = getOrCreateClassMapping(obf.getOwnerClassEntry());
-                classMapping.setFieldName(obf.getName(), obf.getDesc(), deobfName);
-        }
-
-        public void removeFieldMapping(FieldEntry obf) {
-                ClassMapping classMapping = getOrCreateClassMapping(obf.getOwnerClassEntry());
-                classMapping.removeFieldMapping(classMapping.getFieldByObf(obf.getName(), obf.getDesc()));
-        }
-
-        public void markFieldAsDeobfuscated(FieldEntry obf) {
-                ClassMapping classMapping = getOrCreateClassMapping(obf.getOwnerClassEntry());
-                classMapping.setFieldName(obf.getName(), obf.getDesc(), obf.getName());
-        }
-
-        private void validateMethodTreeName(MethodEntry entry, String deobfName) {
-                MethodEntry targetEntry = entryPool.getMethod(entry.getOwnerClassEntry(), deobfName, entry.getDesc());
-
-                // TODO: Verify if I don't break things
-                ClassMapping classMapping = mappings.getClassByObf(entry.getOwnerClassEntry());
-                if ((classMapping != null && classMapping.containsDeobfMethod(deobfName, entry.getDesc()) && classMapping.getMethodByObf(entry.getName(), entry.getDesc()) != classMapping.getMethodByDeobf(deobfName, entry.getDesc()))
-                                || index.containsObfMethod(targetEntry)) {
-                        Translator translator = mappings.getTranslator(TranslationDirection.DEOBFUSCATING, index.getTranslationIndex());
-                        String deobfClassName = translator.getTranslatedClass(entryPool.getClass(entry.getClassName())).getClassName();
-                        if (deobfClassName == null) {
-                                deobfClassName = entry.getClassName();
-                        }
-                        throw new IllegalNameException(deobfName, "There is already a method with that name and signature in class " + deobfClassName);
-                }
-
-                for (ClassEntry child : index.getTranslationIndex().getSubclass(entry.getOwnerClassEntry())) {
-                        validateMethodTreeName(entry.updateOwnership(child), deobfName);
-                }
-        }
-
-        public void setMethodTreeName(MethodEntry obf, String deobfName) {
-                Set<MethodEntry> implementations = index.getRelatedMethodImplementations(obf);
-
-                deobfName = NameValidator.validateMethodName(deobfName);
-                for (MethodEntry entry : implementations) {
-                        validateMethodTreeName(entry, deobfName);
-                }
-
-                for (MethodEntry entry : implementations) {
-                        setMethodName(entry, deobfName);
-                }
-        }
-
-        public void setMethodName(MethodEntry obf, String deobfName) {
-                deobfName = NameValidator.validateMethodName(deobfName);
-                MethodEntry targetEntry = entryPool.getMethod(obf.getOwnerClassEntry(), deobfName, obf.getDesc());
-                ClassMapping classMapping = getOrCreateClassMapping(obf.getOwnerClassEntry());
-
-                // TODO: Verify if I don't break things
-                if ((mappings.containsDeobfMethod(obf.getOwnerClassEntry(), deobfName, obf.getDesc()) && classMapping.getMethodByObf(obf.getName(), obf.getDesc()) != classMapping.getMethodByDeobf(deobfName, obf.getDesc()))
-                                || index.containsObfMethod(targetEntry)) {
-                        Translator translator = mappings.getTranslator(TranslationDirection.DEOBFUSCATING, index.getTranslationIndex());
-                        String deobfClassName = translator.getTranslatedClass(entryPool.getClass(obf.getClassName())).getClassName();
-                        if (deobfClassName == null) {
-                                deobfClassName = obf.getClassName();
-                        }
-                        throw new IllegalNameException(deobfName, "There is already a method with that name and signature in class " + deobfClassName);
-                }
-
-                classMapping.setMethodName(obf.getName(), obf.getDesc(), deobfName);
-        }
-
-        public void removeMethodTreeMapping(MethodEntry obf) {
-                index.getRelatedMethodImplementations(obf).forEach(this::removeMethodMapping);
-        }
-
-        public void removeMethodMapping(MethodEntry obf) {
-                ClassMapping classMapping = getOrCreateClassMapping(obf.getOwnerClassEntry());
-                classMapping.setMethodName(obf.getName(), obf.getDesc(), null);
-        }
-
-        public void markMethodTreeAsDeobfuscated(MethodEntry obf) {
-                index.getRelatedMethodImplementations(obf).forEach(this::markMethodAsDeobfuscated);
-        }
-
-        public void markMethodAsDeobfuscated(MethodEntry obf) {
-                ClassMapping classMapping = getOrCreateClassMapping(obf.getOwnerClassEntry());
-                classMapping.setMethodName(obf.getName(), obf.getDesc(), obf.getName());
-        }
-
-        public void setLocalVariableTreeName(LocalVariableEntry obf, String deobfName) {
-                MethodEntry obfMethod = obf.getOwnerEntry();
-                if (!obf.isParameter()) {
-                        setLocalVariableName(obf, deobfName);
-                        return;
-                }
-
-                Set<MethodEntry> implementations = index.getRelatedMethodImplementations(obfMethod);
-                for (MethodEntry entry : implementations) {
-                        ClassMapping classMapping = mappings.getClassByObf(entry.getOwnerClassEntry());
-                        if (classMapping != null) {
-                                MethodMapping mapping = classMapping.getMethodByObf(entry.getName(), entry.getDesc());
-                                // NOTE: don't need to check arguments for name collisions with names determined by Procyon
-                                // TODO: Verify if I don't break things
-                                if (mapping != null) {
-                                        for (LocalVariableMapping localVariableMapping : Lists.newArrayList(mapping.arguments())) {
-                                                if (localVariableMapping.getIndex() != obf.getIndex()) {
-                                                        if (mapping.getDeobfLocalVariableName(localVariableMapping.getIndex()).equals(deobfName)
-                                                                        || localVariableMapping.getName().equals(deobfName)) {
-                                                                throw new IllegalNameException(deobfName, "There is already an argument with that name");
-                                                        }
-                                                }
-                                        }
-                                }
-                        }
-                }
-
-                for (MethodEntry entry : implementations) {
-                        setLocalVariableName(new LocalVariableEntry(entry, obf.getIndex(), obf.getName(), obf.isParameter()), deobfName);
-                }
-        }
-
-        public void setLocalVariableName(LocalVariableEntry obf, String deobfName) {
-                deobfName = NameValidator.validateArgumentName(deobfName);
-                ClassMapping classMapping = getOrCreateClassMapping(obf.getOwnerClassEntry());
-                MethodMapping mapping = classMapping.getMethodByObf(obf.getMethodName(), obf.getMethodDesc());
-                // NOTE: don't need to check arguments for name collisions with names determined by Procyon
-                // TODO: Verify if I don't break things
-                if (mapping != null) {
-                        for (LocalVariableMapping localVariableMapping : Lists.newArrayList(mapping.arguments())) {
-                                if (localVariableMapping.getIndex() != obf.getIndex()) {
-                                        if (mapping.getDeobfLocalVariableName(localVariableMapping.getIndex()).equals(deobfName)
-                                                        || localVariableMapping.getName().equals(deobfName)) {
-                                                throw new IllegalNameException(deobfName, "There is already an argument with that name");
-                                        }
-                                }
-                        }
-                }
-
-                classMapping.setArgumentName(obf.getMethodName(), obf.getMethodDesc(), obf.getIndex(), deobfName);
-        }
-
-        public void removeLocalVariableMapping(LocalVariableEntry obf) {
-                ClassMapping classMapping = getOrCreateClassMapping(obf.getOwnerClassEntry());
-                classMapping.removeArgumentName(obf.getMethodName(), obf.getMethodDesc(), obf.getIndex());
-        }
-
-        public void markArgumentAsDeobfuscated(LocalVariableEntry obf) {
-                ClassMapping classMapping = getOrCreateClassMapping(obf.getOwnerClassEntry());
-                classMapping.setArgumentName(obf.getMethodName(), obf.getMethodDesc(), obf.getIndex(), obf.getName());
-        }
-
-        public boolean moveFieldToObfClass(ClassMapping classMapping, FieldMapping fieldMapping, ClassEntry obfClass) {
-                classMapping.removeFieldMapping(fieldMapping);
-                ClassMapping targetClassMapping = getOrCreateClassMapping(obfClass);
-                if (!targetClassMapping.containsObfField(fieldMapping.getObfName(), fieldMapping.getObfDesc())) {
-                        if (!targetClassMapping.containsDeobfField(fieldMapping.getDeobfName(), fieldMapping.getObfDesc())) {
-                                targetClassMapping.addFieldMapping(fieldMapping);
-                                return true;
-                        } else {
-                                System.err.println("WARNING: deobf field was already there: " + obfClass + "." + fieldMapping.getDeobfName());
-                        }
-                }
-                return false;
-        }
-
-        public boolean moveMethodToObfClass(ClassMapping classMapping, MethodMapping methodMapping, ClassEntry obfClass) {
-                classMapping.removeMethodMapping(methodMapping);
-                ClassMapping targetClassMapping = getOrCreateClassMapping(obfClass);
-                if (!targetClassMapping.containsObfMethod(methodMapping.getObfName(), methodMapping.getObfDesc())) {
-                        if (!targetClassMapping.containsDeobfMethod(methodMapping.getDeobfName(), methodMapping.getObfDesc())) {
-                                targetClassMapping.addMethodMapping(methodMapping);
-                                return true;
-                        } else {
-                                System.err.println("WARNING: deobf method was already there: " + obfClass + "." + methodMapping.getDeobfName() + methodMapping.getObfDesc());
-                        }
-                }
-                return false;
-        }
-
-        public void write(OutputStream out) throws IOException {
-                // TEMP: just use the object output for now. We can find a more efficient storage format later
-                GZIPOutputStream gzipout = new GZIPOutputStream(out);
-                ObjectOutputStream oout = new ObjectOutputStream(gzipout);
-                oout.writeObject(this);
-                gzipout.finish();
-        }
-
-        private ClassMapping getOrCreateClassMapping(ClassEntry obfClassEntry) {
-                List<ClassMapping> mappingChain = getOrCreateClassMappingChain(obfClassEntry);
-                return mappingChain.get(mappingChain.size() - 1);
-        }
-
-        private List<ClassMapping> getOrCreateClassMappingChain(ClassEntry obfClassEntry) {
-                List<ClassEntry> classChain = obfClassEntry.getClassChain();
-                List<ClassMapping> mappingChain = mappings.getClassMappingChain(obfClassEntry);
-                for (int i = 0; i < classChain.size(); i++) {
-                        ClassEntry classEntry = classChain.get(i);
-                        ClassMapping classMapping = mappingChain.get(i);
-                        if (classMapping == null) {
-
-                                // create it
-                                classMapping = new ClassMapping(classEntry.getName());
-                                mappingChain.set(i, classMapping);
-
-                                // add it to the right parent
-                                try {
-                                        if (i == 0) {
-                                                mappings.addClassMapping(classMapping);
-                                        } else {
-                                                mappingChain.get(i - 1).addInnerClassMapping(classMapping);
-                                        }
-                                } catch (MappingConflict mappingConflict) {
-                                        mappingConflict.printStackTrace();
-                                }
-                        }
-                }
-                return mappingChain;
-        }
-
-        public void setClassModifier(ClassEntry obEntry, Mappings.EntryModifier modifier) {
-                ClassMapping classMapping = getOrCreateClassMapping(obEntry);
-                classMapping.setModifier(modifier);
-        }
-
-        public void setFieldModifier(FieldEntry obEntry, Mappings.EntryModifier modifier) {
-                ClassMapping classMapping = getOrCreateClassMapping(obEntry.getOwnerClassEntry());
-                classMapping.setFieldModifier(obEntry.getName(), obEntry.getDesc(), modifier);
-        }
-
-        public void setMethodModifier(MethodEntry obEntry, Mappings.EntryModifier modifier) {
-                ClassMapping classMapping = getOrCreateClassMapping(obEntry.getOwnerClassEntry());
-                classMapping.setMethodModifier(obEntry.getName(), obEntry.getDesc(), modifier);
-        }
-
-        public Mappings.EntryModifier getClassModifier(ClassEntry obfEntry) {
-                ClassMapping classMapping = getOrCreateClassMapping(obfEntry);
-                return classMapping.getModifier();
-        }
-
-        public Mappings.EntryModifier getFieldModifier(FieldEntry obfEntry) {
-                ClassMapping classMapping = getOrCreateClassMapping(obfEntry.getOwnerClassEntry());
-                FieldMapping fieldMapping = classMapping.getFieldByObf(obfEntry);
-                if (fieldMapping == null) {
-                        return Mappings.EntryModifier.UNCHANGED;
-                }
-                return fieldMapping.getModifier();
-        }
-
-        public Mappings.EntryModifier getMethodModfifier(MethodEntry obfEntry) {
-                ClassMapping classMapping = getOrCreateClassMapping(obfEntry.getOwnerClassEntry());
-                MethodMapping methodMapping = classMapping.getMethodByObf(obfEntry);
-                if (methodMapping == null) {
-                        return Mappings.EntryModifier.UNCHANGED;
-                }
-                return methodMapping.getModifier();
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/MappingsSRGWriter.java b/src/main/java/cuchaz/enigma/mapping/MappingsSRGWriter.java
deleted file mode 100644
index 32f0ee9..0000000
--- a/src/main/java/cuchaz/enigma/mapping/MappingsSRGWriter.java
+++ /dev/null
@@ -1,80 +0,0 @@
-package cuchaz.enigma.mapping;
-
-import com.google.common.base.Charsets;
-import cuchaz.enigma.analysis.TranslationIndex;
-import cuchaz.enigma.mapping.entry.ReferencedEntryPool;
-
-import java.io.*;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
-/**
- * Created by Mark on 11/08/2016.
- */
-public class MappingsSRGWriter {
-
-        public void write(File file, Mappings mappings) throws IOException {
-                if (file.exists()) {
-                        file.delete();
-                }
-                file.createNewFile();
-
-                TranslationIndex index = new TranslationIndex(new ReferencedEntryPool());
-
-                PrintWriter writer = new PrintWriter(new OutputStreamWriter(new FileOutputStream(file), Charsets.UTF_8));
-                List<String> fieldMappings = new ArrayList<>();
-                List<String> methodMappings = new ArrayList<>();
-                for (ClassMapping classMapping : sorted(mappings.classes())) {
-                        if (classMapping.getDeobfName() == null || classMapping.getObfSimpleName() == null || classMapping.getDeobfName() == null) {
-                                continue;
-                        }
-                        writer.write("CL: " + classMapping.getObfSimpleName() + " " + classMapping.getDeobfName());
-                        writer.write(System.lineSeparator());
-                        for (ClassMapping innerClassMapping : sorted(classMapping.innerClasses())) {
-                                if (innerClassMapping.getDeobfName() == null || innerClassMapping.getObfSimpleName() == null || innerClassMapping.getDeobfName() == null) {
-                                        continue;
-                                }
-                                String innerClassName = classMapping.getObfSimpleName() + "$" + innerClassMapping.getObfSimpleName();
-                                String innerDeobfClassName = classMapping.getDeobfName() + "$" + innerClassMapping.getDeobfName();
-                                writer.write("CL: " + innerClassName + " " + classMapping.getDeobfName() + "$" + innerClassMapping.getDeobfName());
-                                writer.write(System.lineSeparator());
-                                for (FieldMapping fieldMapping : sorted(innerClassMapping.fields())) {
-                                        fieldMappings.add("FD: " + innerClassName + "/" + fieldMapping.getObfName() + " " + innerDeobfClassName + "/" + fieldMapping.getDeobfName());
-                                }
-
-                                for (MethodMapping methodMapping : sorted(innerClassMapping.methods())) {
-                                        methodMappings.add("MD: " + innerClassName + "/" + methodMapping.getObfName() + " " + methodMapping.getObfDesc() + " " + innerDeobfClassName + "/" + methodMapping.getDeobfName() + " " + mappings.getTranslator(TranslationDirection.DEOBFUSCATING, index).getTranslatedMethodDesc(methodMapping.getObfDesc()));
-                                }
-                        }
-
-                        for (FieldMapping fieldMapping : sorted(classMapping.fields())) {
-                                fieldMappings.add("FD: " + classMapping.getObfFullName() + "/" + fieldMapping.getObfName() + " " + classMapping.getDeobfName() + "/" + fieldMapping.getDeobfName());
-                        }
-
-                        for (MethodMapping methodMapping : sorted(classMapping.methods())) {
-                                methodMappings.add("MD: " + classMapping.getObfFullName() + "/" + methodMapping.getObfName() + " " + methodMapping.getObfDesc() + " " + classMapping.getDeobfName() + "/" + methodMapping.getDeobfName() + " " + mappings.getTranslator(TranslationDirection.DEOBFUSCATING, index).getTranslatedMethodDesc(methodMapping.getObfDesc()));
-                        }
-                }
-                for (String fd : fieldMappings) {
-                        writer.write(fd);
-                        writer.write(System.lineSeparator());
-                }
-
-                for (String md : methodMappings) {
-                        writer.write(md);
-                        writer.write(System.lineSeparator());
-                }
-
-                writer.close();
-        }
-
-        private <T extends Comparable<T>> List<T> sorted(Iterable<T> classes) {
-                List<T> out = new ArrayList<>();
-                for (T t : classes) {
-                        out.add(t);
-                }
-                Collections.sort(out);
-                return out;
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/MappingsTinyReader.java b/src/main/java/cuchaz/enigma/mapping/MappingsTinyReader.java
deleted file mode 100644
index 756ac43..0000000
--- a/src/main/java/cuchaz/enigma/mapping/MappingsTinyReader.java
+++ /dev/null
@@ -1,130 +0,0 @@
-package cuchaz.enigma.mapping;
-
-import com.google.common.base.Charsets;
-import com.google.common.collect.Maps;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.throwables.MappingConflict;
-import cuchaz.enigma.throwables.MappingParseException;
-
-import java.io.File;
-import java.io.IOException;
-import java.nio.file.Files;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-
-public class MappingsTinyReader {
-        public ClassMapping readClass(String[] parts) {
-                // Extract the inner naming of the deob form if it have one
-                String deobName = parts[2].contains("$") ? parts[2].substring(parts[2].lastIndexOf('$') + 1) : parts[2];
-                return new ClassMapping(parts[1], deobName).setDeobfInner(parts[2]);
-        }
-
-        public FieldMapping readField(String[] parts) {
-                return new FieldMapping(parts[3], new TypeDescriptor(parts[2]), parts[4], Mappings.EntryModifier.UNCHANGED);
-        }
-
-        public MethodMapping readMethod(String[] parts) {
-                return new MethodMapping(parts[3], new MethodDescriptor(parts[2]), parts[4]);
-        }
-
-        public Mappings read(File file) throws IOException, MappingParseException {
-                Mappings mappings = new Mappings(Mappings.FormatType.TINY_FILE);
-                List<String> lines = Files.readAllLines(file.toPath(), Charsets.UTF_8);
-                Map<String, ClassMapping> classMappingMap = Maps.newHashMap();
-                lines.remove(0); // TODO: use the header
-                for (int lineNumber = 0; lineNumber < lines.size(); lineNumber++) {
-                        String line = lines.get(lineNumber);
-                        String[] parts = line.split("\t");
-                        try {
-                                String token = parts[0];
-                                ClassMapping classMapping;
-                                switch (token) {
-                                        case "CLASS":
-
-                                                // Check for orphan created by field or method entries. It shouldn't be possible but I prefer to handle this case
-                                                if (classMappingMap.containsKey(parts[1])) {
-                                                        classMapping = classMappingMap.get(parts[1]);
-
-                                                        // We have the full deob name, Enigma only support simple class name so we extract it.
-                                                        String deobName = parts[2].contains("$") ?
-                                                                          parts[2].substring(parts[2].lastIndexOf('$') + 1) :
-                                                                          parts[2];
-
-                                                        // Add full deob name to the class mapping to handle inner class after this loop
-                                                        classMappingMap.put(parts[2], classMapping.setDeobfInner(parts[2]));
-                                                        classMapping.setDeobfName(deobName);
-
-                                                        // Avoid to make the mapping dirty directly at the startup
-                                                        classMapping.resetDirty();
-                                                } else
-                                                        classMapping = readClass(parts);
-                                                classMappingMap.put(parts[1], classMapping);
-                                                break;
-                                        case "FIELD":
-                                                // We can have missing classes mappings because they don't have a ob name, so we create it and use it
-                                                classMapping = classMappingMap.computeIfAbsent(parts[1], k -> new ClassMapping(parts[1]));
-                                                classMapping.addFieldMapping(readField(parts));
-                                                break;
-                                        case "METHOD":
-                                                // We can have missing classes mappings because they don't have a ob name, so we create it and use it
-                                                classMapping = classMappingMap.computeIfAbsent(parts[1], k -> new ClassMapping(parts[1]));
-                                                classMapping.addMethodMapping(readMethod(parts));
-                                                break;
-                                        case "MTH-ARG":
-                                                classMapping = classMappingMap.computeIfAbsent(parts[1], k -> new ClassMapping(parts[1]));
-                                                classMapping.setArgumentName(parts[3], new MethodDescriptor(parts[2]), Integer.parseInt(parts[4]), parts[5]);
-                                                break;
-                                        default:
-                                                throw new MappingParseException(file, lineNumber, "Unknown token '" + token + "' !");
-                                }
-                        } catch (ArrayIndexOutOfBoundsException | IllegalArgumentException ex) {
-                                ex.printStackTrace();
-                                throw new MappingParseException(file, lineNumber, "Malformed line:\n" + line);
-                        }
-                }
-
-                List<ClassMapping> toRegister = new ArrayList<>(classMappingMap.values());
-
-                // After having completely parsed the file, we need to register it to the real mapping
-                for (ClassMapping classMapping : toRegister) {
-                        ClassEntry obEntry = classMapping.getObfEntry();
-                        ClassEntry deobEntry = classMapping.getDeObfEntry();
-                        try {
-                                if (obEntry.isInnerClass()) {
-                                        ClassMapping parent = classMappingMap.get(obEntry.getOuterClassName());
-                                        // Inner class can miss their parent... So we create it and add it to the mappings
-                                        if (parent == null) {
-                                                parent = new ClassMapping(obEntry.getOuterClassName()); // FIXME: WE ACTUALLY DON'T MANAGE INNER CLASS OF INNER CLASS
-                                                classMappingMap.put(obEntry.getOuterClassName(), parent);
-                                                mappings.addClassMapping(parent);
-                                        }
-                                        // Add the inner class to the parent
-                                        parent.addInnerClassMapping(classMapping);
-                                }
-                                // obf class can become deobf inner classs, manage this case.
-                                else if (deobEntry != null && deobEntry.isInnerClass()) {
-                                        String outerClassName = deobEntry.getOuterClassName();
-                                        ClassMapping parent = classMappingMap.get(outerClassName);
-
-                                        // Only the inner is deob??? Okay
-                                        if (parent == null) {
-                                                parent = classMappingMap.get(outerClassName);
-                                                if (parent == null) {
-                                                        parent = new ClassMapping(outerClassName); // FIXME: WE ACTUALLY DON'T MANAGE INNER CLASS OF INNER CLASS
-                                                        classMappingMap.put(outerClassName, parent);
-                                                        mappings.addClassMapping(parent);
-                                                }
-                                        }
-                                        parent.addInnerClassMapping(classMapping);
-                                } else
-                                        mappings.addClassMapping(classMapping);
-                        } catch (MappingConflict e) {
-                                throw new MappingParseException(file, -1, e.getMessage());
-                        }
-                }
-                lines.clear();
-                classMappingMap.clear();
-                return mappings;
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/MemberMapping.java b/src/main/java/cuchaz/enigma/mapping/MemberMapping.java
deleted file mode 100644
index 6effb91..0000000
--- a/src/main/java/cuchaz/enigma/mapping/MemberMapping.java
+++ /dev/null
@@ -1,21 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping;
-
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.Entry;
-
-public interface MemberMapping<T extends Entry> {
-        T getObfEntry(ClassEntry classEntry);
-
-        String getObfName();
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/MethodMapping.java b/src/main/java/cuchaz/enigma/mapping/MethodMapping.java
deleted file mode 100644
index 2f10144..0000000
--- a/src/main/java/cuchaz/enigma/mapping/MethodMapping.java
+++ /dev/null
@@ -1,210 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping;
-
-import com.google.common.base.Preconditions;
-import com.google.common.collect.Maps;
-import cuchaz.enigma.mapping.entry.ClassEntry;
-import cuchaz.enigma.mapping.entry.MethodEntry;
-import cuchaz.enigma.throwables.IllegalNameException;
-import cuchaz.enigma.throwables.MappingConflict;
-
-import java.util.Map;
-
-public class MethodMapping implements Comparable<MethodMapping>, MemberMapping<MethodEntry> {
-
-        private String obfName;
-        private String deobfName;
-        private MethodDescriptor obfDescriptor;
-        private Map<Integer, LocalVariableMapping> localVariables;
-        private Mappings.EntryModifier modifier;
-
-        public MethodMapping(String obfName, MethodDescriptor obfDescriptor) {
-                this(obfName, obfDescriptor, null, Mappings.EntryModifier.UNCHANGED);
-        }
-
-        public MethodMapping(String obfName, MethodDescriptor obfDescriptor, String deobfName) {
-                this(obfName, obfDescriptor, deobfName, Mappings.EntryModifier.UNCHANGED);
-        }
-
-        public MethodMapping(String obfName, MethodDescriptor obfDescriptor, String deobfName, Mappings.EntryModifier modifier) {
-                Preconditions.checkNotNull(obfName, "Method obf name cannot be null");
-                Preconditions.checkNotNull(obfDescriptor, "Method obf desc cannot be null");
-                this.obfName = obfName;
-                this.deobfName = NameValidator.validateMethodName(deobfName);
-                this.obfDescriptor = obfDescriptor;
-                this.localVariables = Maps.newTreeMap();
-                this.modifier = modifier;
-        }
-
-        public MethodMapping(MethodMapping other, Translator translator) {
-                this.obfName = other.obfName;
-                this.deobfName = other.deobfName;
-                this.modifier = other.modifier;
-                this.obfDescriptor = translator.getTranslatedMethodDesc(other.obfDescriptor);
-                this.localVariables = Maps.newTreeMap();
-                for (Map.Entry<Integer, LocalVariableMapping> entry : other.localVariables.entrySet()) {
-                        this.localVariables.put(entry.getKey(), new LocalVariableMapping(entry.getValue()));
-                }
-        }
-
-        @Override
-        public String getObfName() {
-                return this.obfName;
-        }
-
-        public void setObfName(String name) {
-                try {
-                        NameValidator.validateMethodName(name);
-                } catch (IllegalNameException ex) {
-                        // Invalid name, damn obfuscation! Map to a deob name with another name to avoid issues
-                        if (this.deobfName == null) {
-                                System.err.println("WARNING: " + name + " is conflicting, auto deobfuscate to " + (name + "_auto_deob"));
-                                setDeobfName(name + "_auto_deob");
-                        }
-                }
-                this.obfName = name;
-        }
-
-        public String getDeobfName() {
-                if (deobfName == null) {
-                        return obfName;
-                }
-                return this.deobfName;
-        }
-
-        public void setDeobfName(String val) {
-                this.deobfName = NameValidator.validateMethodName(val);
-        }
-
-        public MethodDescriptor getObfDesc() {
-                return this.obfDescriptor;
-        }
-
-        public void setObfDescriptor(MethodDescriptor val) {
-                this.obfDescriptor = val;
-        }
-
-        public Iterable<LocalVariableMapping> arguments() {
-                return this.localVariables.values();
-        }
-
-        public void addArgumentMapping(LocalVariableMapping localVariableMapping) throws MappingConflict {
-                if (this.localVariables.containsKey(localVariableMapping.getIndex())) {
-                        throw new MappingConflict("argument", localVariableMapping.getName(), this.localVariables.get(localVariableMapping.getIndex()).getName());
-                }
-                this.localVariables.put(localVariableMapping.getIndex(), localVariableMapping);
-        }
-
-        public String getObfLocalVariableName(int index) {
-                LocalVariableMapping localVariableMapping = this.localVariables.get(index);
-                if (localVariableMapping != null) {
-                        return localVariableMapping.getName();
-                }
-
-                return null;
-        }
-
-        public String getDeobfLocalVariableName(int index) {
-                LocalVariableMapping localVariableMapping = this.localVariables.get(index);
-                if (localVariableMapping != null) {
-                        return localVariableMapping.getName();
-                }
-
-                return null;
-        }
-
-        public void setLocalVariableName(int index, String name) {
-                LocalVariableMapping localVariableMapping = this.localVariables.get(index);
-                if (localVariableMapping == null) {
-                        localVariableMapping = new LocalVariableMapping(index, name);
-                        boolean wasAdded = this.localVariables.put(index, localVariableMapping) == null;
-                        assert (wasAdded);
-                } else {
-                        localVariableMapping.setName(name);
-                }
-        }
-
-        public void removeLocalVariableName(int index) {
-                boolean wasRemoved = this.localVariables.remove(index) != null;
-                assert (wasRemoved);
-        }
-
-        @Override
-        public String toString() {
-                StringBuilder buf = new StringBuilder();
-                buf.append("\t");
-                buf.append(this.obfName);
-                buf.append(" <-> ");
-                buf.append(this.deobfName);
-                buf.append("\n");
-                buf.append("\t");
-                buf.append(this.obfDescriptor);
-                buf.append("\n");
-                buf.append("\tLocal Variables:\n");
-                for (LocalVariableMapping localVariableMapping : this.localVariables.values()) {
-                        buf.append("\t\t");
-                        buf.append(localVariableMapping.getIndex());
-                        buf.append(" -> ");
-                        buf.append(localVariableMapping.getName());
-                        buf.append("\n");
-                }
-                return buf.toString();
-        }
-
-        @Override
-        public int compareTo(MethodMapping other) {
-                return (this.obfName + this.obfDescriptor).compareTo(other.obfName + other.obfDescriptor);
-        }
-
-        public boolean containsLocalVariable(String name) {
-                for (LocalVariableMapping localVariableMapping : this.localVariables.values()) {
-                        if (localVariableMapping.getName().equals(name)) {
-                                return true;
-                        }
-                }
-                return false;
-        }
-
-        public boolean renameObfClass(final String oldObfClassName, final String newObfClassName) {
-                // rename obf classes in the signature
-                MethodDescriptor newDescriptor = obfDescriptor.remap(className -> {
-                        if (className.equals(oldObfClassName)) {
-                                return newObfClassName;
-                        }
-                        return className;
-                });
-
-                if (!newDescriptor.equals(this.obfDescriptor)) {
-                        this.obfDescriptor = newDescriptor;
-                        return true;
-                }
-                return false;
-        }
-
-        @Override
-        public MethodEntry getObfEntry(ClassEntry classEntry) {
-                return new MethodEntry(classEntry, this.obfName, this.obfDescriptor);
-        }
-
-        public Mappings.EntryModifier getModifier() {
-                return modifier;
-        }
-
-        public void setModifier(Mappings.EntryModifier modifier) {
-                this.modifier = modifier;
-        }
-
-        public boolean isObfuscated() {
-                return deobfName == null || deobfName.equals(obfName);
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/Translator.java b/src/main/java/cuchaz/enigma/mapping/Translator.java
deleted file mode 100644
index a9ff1cb..0000000
--- a/src/main/java/cuchaz/enigma/mapping/Translator.java
+++ /dev/null
@@ -1,109 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping;
-
-import cuchaz.enigma.mapping.entry.*;
-import org.objectweb.asm.Handle;
-import org.objectweb.asm.Type;
-
-public interface Translator {
-        ClassEntry getTranslatedClass(ClassEntry entry);
-
-        ClassDefEntry getTranslatedClassDef(ClassDefEntry entry);
-
-        FieldEntry getTranslatedField(FieldEntry entry);
-
-        FieldDefEntry getTranslatedFieldDef(FieldDefEntry entry);
-
-        MethodEntry getTranslatedMethod(MethodEntry entry);
-
-        MethodDefEntry getTranslatedMethodDef(MethodDefEntry entry);
-
-        LocalVariableEntry getTranslatedVariable(LocalVariableEntry entry);
-
-        LocalVariableDefEntry getTranslatedVariableDef(LocalVariableDefEntry entry);
-
-        boolean hasClassMapping(ClassEntry entry);
-
-        boolean hasFieldMapping(FieldEntry entry);
-
-        boolean hasMethodMapping(MethodEntry entry);
-
-        boolean hasLocalVariableMapping(LocalVariableEntry entry);
-
-        TypeDescriptor getTranslatedTypeDesc(TypeDescriptor desc);
-
-        MethodDescriptor getTranslatedMethodDesc(MethodDescriptor descriptor);
-
-        Signature getTranslatedSignature(Signature signature);
-
-        default Type getTranslatedType(Type type) {
-                String descString = type.getDescriptor();
-                switch (type.getSort()) {
-                        case Type.OBJECT: {
-                                ClassEntry classEntry = new ClassEntry(type.getInternalName());
-                                return Type.getObjectType(getTranslatedClass(classEntry).getName());
-                        }
-                        case Type.ARRAY: {
-                                TypeDescriptor descriptor = new TypeDescriptor(descString);
-                                return Type.getType(getTranslatedTypeDesc(descriptor).toString());
-                        }
-                        case Type.METHOD: {
-                                MethodDescriptor descriptor = new MethodDescriptor(descString);
-                                return Type.getMethodType(getTranslatedMethodDesc(descriptor).toString());
-                        }
-                }
-                return type;
-        }
-
-        default Handle getTranslatedHandle(Handle handle) {
-                MethodEntry entry = new MethodEntry(new ClassEntry(handle.getOwner()), handle.getName(), new MethodDescriptor(handle.getDesc()));
-                MethodEntry translatedMethod = getTranslatedMethod(entry);
-                ClassEntry ownerClass = translatedMethod.getOwnerClassEntry();
-                return new Handle(handle.getTag(), ownerClass.getName(), translatedMethod.getName(), translatedMethod.getDesc().toString(), handle.isInterface());
-        }
-
-        default Object getTranslatedValue(Object value) {
-                if (value instanceof Type) {
-                        return this.getTranslatedType((Type) value);
-                } else if (value instanceof Handle) {
-                        return getTranslatedHandle((Handle) value);
-                }
-                return value;
-        }
-
-        @SuppressWarnings("unchecked")
-        default <T extends Entry> T getTranslatedEntry(T entry) {
-                if (entry instanceof ClassDefEntry) {
-                        return (T) getTranslatedClassDef((ClassDefEntry) entry);
-                } else if (entry instanceof ClassEntry) {
-                        return (T) getTranslatedClass((ClassEntry) entry);
-                } else if (entry instanceof FieldDefEntry) {
-                        return (T) getTranslatedFieldDef((FieldDefEntry) entry);
-                } else if (entry instanceof MethodDefEntry) {
-                        return (T) getTranslatedMethodDef((MethodDefEntry) entry);
-                } else if (entry instanceof FieldEntry) {
-                        return (T) getTranslatedField((FieldEntry) entry);
-                } else if (entry instanceof MethodEntry) {
-                        return (T) getTranslatedMethod((MethodEntry) entry);
-                } else if (entry instanceof LocalVariableDefEntry) {
-                        return (T) getTranslatedVariableDef((LocalVariableDefEntry) entry);
-                } else if (entry instanceof LocalVariableEntry) {
-                        return (T) getTranslatedVariable((LocalVariableEntry) entry);
-                } else if (entry instanceof TypeDescriptor) {
-                        return (T) getTranslatedTypeDesc((TypeDescriptor) entry);
-                } else if (entry instanceof MethodDescriptor) {
-                        return (T) getTranslatedMethodDesc((MethodDescriptor) entry);
-                }
-                throw new IllegalArgumentException("Cannot translate unknown entry type");
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/entry/ClassDefEntry.java b/src/main/java/cuchaz/enigma/mapping/entry/ClassDefEntry.java
deleted file mode 100644
index df72e7e..0000000
--- a/src/main/java/cuchaz/enigma/mapping/entry/ClassDefEntry.java
+++ /dev/null
@@ -1,38 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping.entry;
-
-import com.google.common.base.Preconditions;
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.Signature;
-
-public class ClassDefEntry extends ClassEntry implements DefEntry {
-        private final AccessFlags access;
-        private final Signature signature;
-
-        public ClassDefEntry(String className, Signature signature, AccessFlags access) {
-                super(className);
-                Preconditions.checkNotNull(signature, "Class signature cannot be null");
-                Preconditions.checkNotNull(access, "Class access cannot be null");
-                this.signature = signature;
-                this.access = access;
-        }
-
-        public Signature getSignature() {
-                return signature;
-        }
-
-        @Override
-        public AccessFlags getAccess() {
-                return access;
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/entry/ClassEntry.java b/src/main/java/cuchaz/enigma/mapping/entry/ClassEntry.java
deleted file mode 100644
index c795825..0000000
--- a/src/main/java/cuchaz/enigma/mapping/entry/ClassEntry.java
+++ /dev/null
@@ -1,175 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping.entry;
-
-import com.google.common.base.Preconditions;
-import com.google.common.collect.Lists;
-
-import java.util.List;
-
-public class ClassEntry implements Entry {
-
-        private final String name;
-
-        public ClassEntry(String className) {
-                Preconditions.checkNotNull(className, "Class name cannot be null");
-
-                if (className.indexOf('.') >= 0) {
-                        throw new IllegalArgumentException("Class name must be in JVM format. ie, path/to/package/class$inner : " + className);
-                }
-
-                this.name = className;
-
-                if (isInnerClass() && getInnermostClassName().indexOf('/') >= 0) {
-                        throw new IllegalArgumentException("Inner class must not have a package: " + className);
-                }
-        }
-
-        public ClassEntry(ClassEntry other) {
-                this.name = other.name;
-        }
-
-        @Override
-        public String getName() {
-                return this.name;
-        }
-
-        @Override
-        public String getClassName() {
-                return this.name;
-        }
-
-        @Override
-        public ClassEntry getOwnerClassEntry() {
-                return this;
-        }
-
-        @Override
-        public ClassEntry updateOwnership(ClassEntry classEntry) {
-                return classEntry;
-        }
-
-        @Override
-        public int hashCode() {
-                return this.name.hashCode();
-        }
-
-        @Override
-        public boolean equals(Object other) {
-                return other instanceof ClassEntry && equals((ClassEntry) other);
-        }
-
-        public boolean equals(ClassEntry other) {
-                return other != null && this.name.equals(other.name);
-        }
-
-        @Override
-        public String toString() {
-                return this.name;
-        }
-
-        public boolean isArray() {
-                return this.name.lastIndexOf('[') >= 0;
-        }
-
-        public boolean isInnerClass() {
-                return this.name.lastIndexOf('$') >= 0;
-        }
-
-        public List<String> getClassChainNames() {
-                return Lists.newArrayList(this.name.split("\\$"));
-        }
-
-        public List<ClassEntry> getClassChain() {
-                List<ClassEntry> entries = Lists.newArrayList();
-                StringBuilder buf = new StringBuilder();
-                for (String name : getClassChainNames()) {
-                        if (buf.length() > 0) {
-                                buf.append("$");
-                        }
-                        buf.append(name);
-                        entries.add(new ClassEntry(buf.toString()));
-                }
-                return entries;
-        }
-
-        public String getOutermostClassName() {
-                if (isInnerClass()) {
-                        return this.name.substring(0, this.name.indexOf('$'));
-                }
-                return this.name;
-        }
-
-        public ClassEntry getOutermostClassEntry() {
-                return new ClassEntry(getOutermostClassName());
-        }
-
-        public String getOuterClassName() {
-                if (!isInnerClass()) {
-                        throw new Error("This is not an inner class!");
-                }
-                return this.name.substring(0, this.name.lastIndexOf('$'));
-        }
-
-        public ClassEntry getOuterClassEntry() {
-                return new ClassEntry(getOuterClassName());
-        }
-
-        public String getInnermostClassName() {
-                if (!isInnerClass()) {
-                        throw new Error("This is not an inner class!");
-                }
-                return this.name.substring(this.name.lastIndexOf('$') + 1);
-        }
-
-        public boolean isInDefaultPackage() {
-                return this.name.indexOf('/') < 0;
-        }
-
-        public String getPackageName() {
-                return getPackageName(this.name);
-        }
-
-        public String getSimpleName() {
-                int pos = this.name.lastIndexOf('/');
-                if (pos > 0) {
-                        return this.name.substring(pos + 1);
-                }
-                return this.name;
-        }
-
-        public static String getPackageName(String name) {
-                int pos = name.lastIndexOf('/');
-                if (pos > 0) {
-                        return name.substring(0, pos);
-                }
-                return null;
-        }
-
-        public ClassEntry buildClassEntry(List<ClassEntry> classChain) {
-                assert (classChain.contains(this));
-                StringBuilder buf = new StringBuilder();
-                for (ClassEntry chainEntry : classChain) {
-                        if (buf.length() == 0) {
-                                buf.append(chainEntry.getName());
-                        } else {
-                                buf.append("$");
-                                buf.append(chainEntry.isInnerClass() ? chainEntry.getInnermostClassName() : chainEntry.getSimpleName());
-                        }
-
-                        if (chainEntry == this) {
-                                break;
-                        }
-                }
-                return new ClassEntry(buf.toString());
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/entry/DefEntry.java b/src/main/java/cuchaz/enigma/mapping/entry/DefEntry.java
deleted file mode 100644
index 43ad027..0000000
--- a/src/main/java/cuchaz/enigma/mapping/entry/DefEntry.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package cuchaz.enigma.mapping.entry;
-
-import cuchaz.enigma.bytecode.AccessFlags;
-
-public interface DefEntry extends Entry {
-    AccessFlags getAccess();
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/entry/Entry.java b/src/main/java/cuchaz/enigma/mapping/entry/Entry.java
deleted file mode 100644
index b612140..0000000
--- a/src/main/java/cuchaz/enigma/mapping/entry/Entry.java
+++ /dev/null
@@ -1,22 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping.entry;
-
-public interface Entry {
-        String getName();
-
-        String getClassName();
-
-        ClassEntry getOwnerClassEntry();
-
-        Entry updateOwnership(ClassEntry classEntry);
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/entry/EntryFactory.java b/src/main/java/cuchaz/enigma/mapping/entry/EntryFactory.java
deleted file mode 100644
index 5bd159f..0000000
--- a/src/main/java/cuchaz/enigma/mapping/entry/EntryFactory.java
+++ /dev/null
@@ -1,49 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping.entry;
-
-import cuchaz.enigma.analysis.JarIndex;
-import cuchaz.enigma.mapping.ClassMapping;
-import cuchaz.enigma.mapping.FieldMapping;
-import cuchaz.enigma.mapping.MethodDescriptor;
-import cuchaz.enigma.mapping.MethodMapping;
-
-public class EntryFactory {
-        public static ClassEntry getObfClassEntry(JarIndex jarIndex, ClassMapping classMapping) {
-                ClassEntry obfClassEntry = new ClassEntry(classMapping.getObfFullName());
-                return obfClassEntry.buildClassEntry(jarIndex.getObfClassChain(obfClassEntry));
-        }
-
-        private static ClassEntry getObfClassEntry(ClassMapping classMapping) {
-                return new ClassEntry(classMapping.getObfFullName());
-        }
-
-        public static ClassEntry getDeobfClassEntry(ClassMapping classMapping) {
-                return new ClassEntry(classMapping.getDeobfName());
-        }
-
-        public static FieldEntry getObfFieldEntry(ClassMapping classMapping, FieldMapping fieldMapping) {
-                return new FieldEntry(getObfClassEntry(classMapping), fieldMapping.getObfName(), fieldMapping.getObfDesc());
-        }
-
-        public static MethodEntry getMethodEntry(ClassEntry classEntry, String name, MethodDescriptor desc) {
-                return new MethodEntry(classEntry, name, desc);
-        }
-
-        public static MethodEntry getObfMethodEntry(ClassEntry classEntry, MethodMapping methodMapping) {
-                return getMethodEntry(classEntry, methodMapping.getObfName(), methodMapping.getObfDesc());
-        }
-
-        public static MethodEntry getObfMethodEntry(ClassMapping classMapping, MethodMapping methodMapping) {
-                return getObfMethodEntry(getObfClassEntry(classMapping), methodMapping);
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/entry/FieldDefEntry.java b/src/main/java/cuchaz/enigma/mapping/entry/FieldDefEntry.java
deleted file mode 100644
index 223410f..0000000
--- a/src/main/java/cuchaz/enigma/mapping/entry/FieldDefEntry.java
+++ /dev/null
@@ -1,44 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping.entry;
-
-import com.google.common.base.Preconditions;
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.Signature;
-import cuchaz.enigma.mapping.TypeDescriptor;
-
-public class FieldDefEntry extends FieldEntry implements DefEntry {
-        private final AccessFlags access;
-        private final Signature signature;
-
-        public FieldDefEntry(ClassEntry ownerEntry, String name, TypeDescriptor desc, Signature signature, AccessFlags access) {
-                super(ownerEntry, name, desc);
-                Preconditions.checkNotNull(access, "Field access cannot be null");
-                Preconditions.checkNotNull(signature, "Field signature cannot be null");
-                this.access = access;
-                this.signature = signature;
-        }
-
-        @Override
-        public AccessFlags getAccess() {
-                return access;
-        }
-
-        public Signature getSignature() {
-                return signature;
-        }
-
-        @Override
-        public FieldDefEntry updateOwnership(ClassEntry owner) {
-                return new FieldDefEntry(owner, this.name, this.desc, signature, access);
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/entry/FieldEntry.java b/src/main/java/cuchaz/enigma/mapping/entry/FieldEntry.java
deleted file mode 100644
index b6e1554..0000000
--- a/src/main/java/cuchaz/enigma/mapping/entry/FieldEntry.java
+++ /dev/null
@@ -1,77 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping.entry;
-
-import com.google.common.base.Preconditions;
-import cuchaz.enigma.mapping.TypeDescriptor;
-import cuchaz.enigma.utils.Utils;
-
-public class FieldEntry implements Entry {
-
-        protected final ClassEntry ownerEntry;
-        protected final String name;
-        protected final TypeDescriptor desc;
-
-        // NOTE: this argument order is important for the MethodReader/MethodWriter
-        public FieldEntry(ClassEntry ownerEntry, String name, TypeDescriptor desc) {
-                Preconditions.checkNotNull(ownerEntry, "Owner cannot be null");
-                Preconditions.checkNotNull(name, "Field name cannot be null");
-                Preconditions.checkNotNull(desc, "Field descriptor cannot be null");
-
-                this.ownerEntry = ownerEntry;
-                this.name = name;
-                this.desc = desc;
-        }
-
-        @Override
-        public ClassEntry getOwnerClassEntry() {
-                return this.ownerEntry;
-        }
-
-        @Override
-        public String getName() {
-                return this.name;
-        }
-
-        @Override
-        public String getClassName() {
-                return this.ownerEntry.getName();
-        }
-
-        public TypeDescriptor getDesc() {
-                return this.desc;
-        }
-
-        @Override
-        public FieldEntry updateOwnership(ClassEntry owner) {
-                return new FieldEntry(owner, this.name, this.desc);
-        }
-
-        @Override
-        public int hashCode() {
-                return Utils.combineHashesOrdered(this.ownerEntry, this.name, this.desc);
-        }
-
-        @Override
-        public boolean equals(Object other) {
-                return other instanceof FieldEntry && equals((FieldEntry) other);
-        }
-
-        public boolean equals(FieldEntry other) {
-                return this.ownerEntry.equals(other.ownerEntry) && this.name.equals(other.name) && this.desc.equals(other.desc);
-        }
-
-        @Override
-        public String toString() {
-                return this.ownerEntry.getName() + "." + this.name + ":" + this.desc;
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/entry/LocalVariableDefEntry.java b/src/main/java/cuchaz/enigma/mapping/entry/LocalVariableDefEntry.java
deleted file mode 100644
index d186664..0000000
--- a/src/main/java/cuchaz/enigma/mapping/entry/LocalVariableDefEntry.java
+++ /dev/null
@@ -1,61 +0,0 @@
-package cuchaz.enigma.mapping.entry;
-
-import com.google.common.base.Preconditions;
-import cuchaz.enigma.mapping.TypeDescriptor;
-import cuchaz.enigma.utils.Utils;
-
-/**
- * TypeDescriptor...
- * Created by Thog
- * 19/10/2016
- */
-public class LocalVariableDefEntry extends LocalVariableEntry {
-
-        protected final MethodDefEntry ownerEntry;
-        protected final TypeDescriptor desc;
-
-        public LocalVariableDefEntry(MethodDefEntry ownerEntry, int index, String name, TypeDescriptor desc) {
-                this(ownerEntry, index, name, true, desc);
-        }
-
-        public LocalVariableDefEntry(MethodDefEntry ownerEntry, int index, String name, boolean parameter, TypeDescriptor desc) {
-                super(ownerEntry, index, name, parameter);
-                Preconditions.checkNotNull(desc, "Variable desc cannot be null");
-
-                this.ownerEntry = ownerEntry;
-                this.desc = desc;
-        }
-
-        @Override
-        public MethodDefEntry getOwnerEntry() {
-                return this.ownerEntry;
-        }
-
-        public TypeDescriptor getDesc() {
-                return desc;
-        }
-
-        @Override
-        public LocalVariableDefEntry updateOwnership(ClassEntry classEntry) {
-                return new LocalVariableDefEntry(ownerEntry.updateOwnership(classEntry), index, name, parameter, desc);
-        }
-
-        @Override
-        public int hashCode() {
-                return Utils.combineHashesOrdered(this.ownerEntry, this.desc.hashCode(), this.name.hashCode(), Integer.hashCode(this.index));
-        }
-
-        @Override
-        public boolean equals(Object other) {
-                return other instanceof LocalVariableDefEntry && equals((LocalVariableDefEntry) other);
-        }
-
-        public boolean equals(LocalVariableDefEntry other) {
-                return this.ownerEntry.equals(other.ownerEntry) && this.desc.equals(other.desc) && this.name.equals(other.name) && this.index == other.index;
-        }
-
-        @Override
-        public String toString() {
-                return this.ownerEntry + "(" + this.index + ":" + this.name + ":" + this.desc + ")";
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/entry/LocalVariableEntry.java b/src/main/java/cuchaz/enigma/mapping/entry/LocalVariableEntry.java
deleted file mode 100644
index 3507b25..0000000
--- a/src/main/java/cuchaz/enigma/mapping/entry/LocalVariableEntry.java
+++ /dev/null
@@ -1,93 +0,0 @@
-package cuchaz.enigma.mapping.entry;
-
-import com.google.common.base.Preconditions;
-import cuchaz.enigma.mapping.MethodDescriptor;
-import cuchaz.enigma.utils.Utils;
-
-/**
- * TypeDescriptor...
- * Created by Thog
- * 19/10/2016
- */
-public class LocalVariableEntry implements Entry {
-
-        protected final MethodEntry ownerEntry;
-        protected final String name;
-        protected final int index;
-        protected final boolean parameter;
-
-        @Deprecated
-        public LocalVariableEntry(MethodEntry ownerEntry, int index, String name) {
-                this(ownerEntry, index, name, true);
-        }
-
-        public LocalVariableEntry(MethodEntry ownerEntry, int index, String name, boolean parameter) {
-                Preconditions.checkNotNull(ownerEntry, "Variable owner cannot be null");
-                Preconditions.checkNotNull(name, "Variable name cannot be null");
-                Preconditions.checkArgument(index >= 0, "Index must be positive");
-
-                this.ownerEntry = ownerEntry;
-                this.name = name;
-                this.index = index;
-                this.parameter = parameter;
-        }
-
-        public boolean isParameter() {
-                return this.parameter;
-        }
-
-        public MethodEntry getOwnerEntry() {
-                return this.ownerEntry;
-        }
-
-        public int getIndex() {
-                return index;
-        }
-
-        @Override
-        public String getName() {
-                return this.name;
-        }
-
-        @Override
-        public ClassEntry getOwnerClassEntry() {
-                return this.ownerEntry.getOwnerClassEntry();
-        }
-
-        @Override
-        public String getClassName() {
-                return this.ownerEntry.getClassName();
-        }
-
-        @Override
-        public LocalVariableEntry updateOwnership(ClassEntry classEntry) {
-                return new LocalVariableEntry(ownerEntry.updateOwnership(classEntry), index, name, parameter);
-        }
-
-        public String getMethodName() {
-                return this.ownerEntry.getName();
-        }
-
-        public MethodDescriptor getMethodDesc() {
-                return this.ownerEntry.getDesc();
-        }
-
-        @Override
-        public int hashCode() {
-                return Utils.combineHashesOrdered(this.ownerEntry, this.name.hashCode(), Integer.hashCode(this.index));
-        }
-
-        @Override
-        public boolean equals(Object other) {
-                return other instanceof LocalVariableEntry && equals((LocalVariableEntry) other);
-        }
-
-        public boolean equals(LocalVariableEntry other) {
-                return this.ownerEntry.equals(other.ownerEntry) && this.name.equals(other.name) && this.index == other.index;
-        }
-
-        @Override
-        public String toString() {
-                return this.ownerEntry + "(" + this.index + ":" + this.name + ")";
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/mapping/entry/MethodEntry.java b/src/main/java/cuchaz/enigma/mapping/entry/MethodEntry.java
deleted file mode 100644
index 1abc5b1..0000000
--- a/src/main/java/cuchaz/enigma/mapping/entry/MethodEntry.java
+++ /dev/null
@@ -1,80 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Jeff Martin.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the GNU Lesser General Public
- * License v3.0 which accompanies this distribution, and is available at
- * http://www.gnu.org/licenses/lgpl.html
- * <p>
- * Contributors:
- * Jeff Martin - initial API and implementation
- ******************************************************************************/
-
-package cuchaz.enigma.mapping.entry;
-
-import com.google.common.base.Preconditions;
-import cuchaz.enigma.mapping.MethodDescriptor;
-import cuchaz.enigma.utils.Utils;
-
-public class MethodEntry implements Entry {
-
-        protected final ClassEntry classEntry;
-        protected final String name;
-        protected final MethodDescriptor descriptor;
-
-        public MethodEntry(ClassEntry classEntry, String name, MethodDescriptor descriptor) {
-                Preconditions.checkNotNull(classEntry, "Class cannot be null");
-                Preconditions.checkNotNull(name, "Method name cannot be null");
-                Preconditions.checkNotNull(descriptor, "Method descriptor cannot be null");
-
-                this.classEntry = classEntry;
-                this.name = name;
-                this.descriptor = descriptor;
-        }
-
-        @Override
-        public ClassEntry getOwnerClassEntry() {
-                return this.classEntry;
-        }
-
-        @Override
-        public String getName() {
-                return this.name;
-        }
-
-        public MethodDescriptor getDesc() {
-                return this.descriptor;
-        }
-
-        public boolean isConstructor() {
-                return name.equals("<init>") || name.equals("<clinit>");
-        }
-
-        @Override
-        public String getClassName() {
-                return this.classEntry.getName();
-        }
-
-        @Override
-        public MethodEntry updateOwnership(ClassEntry classEntry) {
-                return new MethodEntry(new ClassEntry(classEntry.getName()), name, descriptor);
-        }
-
-        @Override
-        public int hashCode() {
-                return Utils.combineHashesOrdered(this.classEntry, this.name, this.descriptor);
-        }
-
-        @Override
-        public boolean equals(Object other) {
-                return other instanceof MethodEntry && equals((MethodEntry) other);
-        }
-
-        public boolean equals(MethodEntry other) {
-                return this.classEntry.equals(other.getOwnerClassEntry()) && this.name.equals(other.getName()) && this.descriptor.equals(other.getDesc());
-        }
-
-        @Override
-        public String toString() {
-                return this.classEntry.getName() + "." + this.name + this.descriptor;
-        }
-}
diff --git a/src/main/java/cuchaz/enigma/translation/MappingTranslator.java b/src/main/java/cuchaz/enigma/translation/MappingTranslator.java
new file mode 100644
index 0000000..529d0ed
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/MappingTranslator.java
@@ -0,0 +1,24 @@
+package cuchaz.enigma.translation;
+
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.EntryResolver;
+import cuchaz.enigma.translation.mapping.EntryMap;
+
+public class MappingTranslator implements Translator {
+        private final EntryMap<EntryMapping> mappings;
+        private final EntryResolver resolver;
+
+        public MappingTranslator(EntryMap<EntryMapping> mappings, EntryResolver resolver) {
+                this.mappings = mappings;
+                this.resolver = resolver;
+        }
+
+        @SuppressWarnings("unchecked")
+        @Override
+        public <T extends Translatable> T translate(T translatable) {
+                if (translatable == null) {
+                        return null;
+                }
+                return (T) translatable.translate(this, resolver, mappings);
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/mapping/SignatureUpdater.java b/src/main/java/cuchaz/enigma/translation/SignatureUpdater.java
index ddc5af4..3783053 100644
--- a/src/main/java/cuchaz/enigma/mapping/SignatureUpdater.java
+++ b/src/main/java/cuchaz/enigma/translation/SignatureUpdater.java
@@ -9,7 +9,7 @@
  * Jeff Martin - initial API and implementation
  ******************************************************************************/
 
-package cuchaz.enigma.mapping;
+package cuchaz.enigma.translation;
 
 import com.google.common.collect.Lists;
 
diff --git a/src/main/java/cuchaz/enigma/translation/Translatable.java b/src/main/java/cuchaz/enigma/translation/Translatable.java
new file mode 100644
index 0000000..0370ef1
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/Translatable.java
@@ -0,0 +1,9 @@
+package cuchaz.enigma.translation;
+
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.EntryResolver;
+import cuchaz.enigma.translation.mapping.EntryMap;
+
+public interface Translatable {
+        Translatable translate(Translator translator, EntryResolver resolver, EntryMap<EntryMapping> mappings);
+}
diff --git a/src/main/java/cuchaz/enigma/mapping/TranslationDirection.java b/src/main/java/cuchaz/enigma/translation/TranslationDirection.java
index 4bbde54..2ecb30b 100644
--- a/src/main/java/cuchaz/enigma/mapping/TranslationDirection.java
+++ b/src/main/java/cuchaz/enigma/translation/TranslationDirection.java
@@ -9,7 +9,7 @@
  * Jeff Martin - initial API and implementation
  ******************************************************************************/
 
-package cuchaz.enigma.mapping;
+package cuchaz.enigma.translation;
 
 public enum TranslationDirection {
 
diff --git a/src/main/java/cuchaz/enigma/translation/Translator.java b/src/main/java/cuchaz/enigma/translation/Translator.java
new file mode 100644
index 0000000..de2003e
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/Translator.java
@@ -0,0 +1,54 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ * <p>
+ * Contributors:
+ * Jeff Martin - initial API and implementation
+ ******************************************************************************/
+
+package cuchaz.enigma.translation;
+
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+public interface Translator {
+        <T extends Translatable> T translate(T translatable);
+
+        default <T extends Translatable> Collection<T> translate(Collection<T> translatable) {
+                return translatable.stream()
+                                .map(this::translate)
+                                .collect(Collectors.toList());
+        }
+
+        default <T extends Translatable, V> Map<T, V> translateKeys(Map<T, V> translatable) {
+                Map<T, V> result = new HashMap<>(translatable.size());
+                for (Map.Entry<T, V> entry : translatable.entrySet()) {
+                        result.put(translate(entry.getKey()), entry.getValue());
+                }
+                return result;
+        }
+
+        default <K extends Translatable, V extends Translatable> Map<K, V> translate(Map<K, V> translatable) {
+                Map<K, V> result = new HashMap<>(translatable.size());
+                for (Map.Entry<K, V> entry : translatable.entrySet()) {
+                        result.put(translate(entry.getKey()), translate(entry.getValue()));
+                }
+                return result;
+        }
+
+        default <K extends Translatable, V extends Translatable> Multimap<K, V> translate(Multimap<K, V> translatable) {
+                Multimap<K, V> result = HashMultimap.create(translatable.size(), 1);
+                for (Map.Entry<K, Collection<V>> entry : translatable.asMap().entrySet()) {
+                        result.putAll(translate(entry.getKey()), translate(entry.getValue()));
+                }
+                return result;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/VoidTranslator.java b/src/main/java/cuchaz/enigma/translation/VoidTranslator.java
new file mode 100644
index 0000000..c010833
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/VoidTranslator.java
@@ -0,0 +1,10 @@
+package cuchaz.enigma.translation;
+
+public enum VoidTranslator implements Translator {
+        INSTANCE;
+
+        @Override
+        public <T extends Translatable> T translate(T translatable) {
+                return translatable;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/AccessModifier.java b/src/main/java/cuchaz/enigma/translation/mapping/AccessModifier.java
new file mode 100644
index 0000000..5b79b79
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/AccessModifier.java
@@ -0,0 +1,25 @@
+package cuchaz.enigma.translation.mapping;
+
+import cuchaz.enigma.translation.representation.AccessFlags;
+
+public enum AccessModifier {
+        UNCHANGED, PUBLIC, PROTECTED, PRIVATE;
+
+        public String getFormattedName() {
+                return "ACC:" + super.toString();
+        }
+
+        public AccessFlags transform(AccessFlags access) {
+                switch (this) {
+                        case PUBLIC:
+                                return access.setPublic();
+                        case PROTECTED:
+                                return access.setProtected();
+                        case PRIVATE:
+                                return access.setPrivate();
+                        case UNCHANGED:
+                        default:
+                                return access;
+                }
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/EntryMap.java b/src/main/java/cuchaz/enigma/translation/mapping/EntryMap.java
new file mode 100644
index 0000000..6af4846
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/EntryMap.java
@@ -0,0 +1,24 @@
+package cuchaz.enigma.translation.mapping;
+
+import cuchaz.enigma.translation.representation.entry.Entry;
+
+import javax.annotation.Nullable;
+import java.util.Collection;
+
+public interface EntryMap<T> {
+        void insert(Entry<?> entry, T value);
+
+        @Nullable
+        T remove(Entry<?> entry);
+
+        @Nullable
+        T get(Entry<?> entry);
+
+        default boolean contains(Entry<?> entry) {
+                return get(entry) != null;
+        }
+
+        Collection<Entry<?>> getAllEntries();
+
+        boolean isEmpty();
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/EntryMapping.java b/src/main/java/cuchaz/enigma/translation/mapping/EntryMapping.java
new file mode 100644
index 0000000..f11cdef
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/EntryMapping.java
@@ -0,0 +1,30 @@
+package cuchaz.enigma.translation.mapping;
+
+import javax.annotation.Nonnull;
+
+public class EntryMapping {
+        private final String targetName;
+        private final AccessModifier accessModifier;
+
+        public EntryMapping(@Nonnull String targetName) {
+                this(targetName, AccessModifier.UNCHANGED);
+        }
+
+        public EntryMapping(@Nonnull String targetName, AccessModifier accessModifier) {
+                this.targetName = targetName;
+                this.accessModifier = accessModifier;
+        }
+
+        @Nonnull
+        public String getTargetName() {
+                return targetName;
+        }
+
+        @Nonnull
+        public AccessModifier getAccessModifier() {
+                if (accessModifier == null) {
+                        return AccessModifier.UNCHANGED;
+                }
+                return accessModifier;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/EntryRemapper.java b/src/main/java/cuchaz/enigma/translation/mapping/EntryRemapper.java
new file mode 100644
index 0000000..b7d8d17
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/EntryRemapper.java
@@ -0,0 +1,201 @@
+package cuchaz.enigma.translation.mapping;
+
+import cuchaz.enigma.analysis.index.JarIndex;
+import cuchaz.enigma.translation.MappingTranslator;
+import cuchaz.enigma.translation.Translatable;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.tree.DeltaTrackingTree;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
+import cuchaz.enigma.translation.mapping.tree.EntryTreeNode;
+import cuchaz.enigma.translation.mapping.tree.HashEntryTree;
+import cuchaz.enigma.translation.representation.entry.Entry;
+
+import javax.annotation.Nullable;
+import java.util.Collection;
+
+public class EntryRemapper {
+        private final EntryTree<EntryMapping> obfToDeobf;
+        private final DeltaTrackingTree<EntryMapping> deobfToObf;
+
+        private final JarIndex obfIndex;
+
+        private final EntryResolver obfResolver;
+        private EntryResolver deobfResolver;
+
+        private final Translator deobfuscator;
+        private Translator obfuscator;
+
+        private final MappingValidator validator;
+
+        private EntryRemapper(JarIndex jarIndex, EntryTree<EntryMapping> obfToDeobf, EntryTree<EntryMapping> deobfToObf) {
+                this.obfToDeobf = obfToDeobf;
+                this.deobfToObf = new DeltaTrackingTree<>(deobfToObf);
+
+                this.obfIndex = jarIndex;
+                this.obfResolver = jarIndex.getEntryResolver();
+
+                this.deobfuscator = new MappingTranslator(obfToDeobf, obfResolver);
+                rebuildDeobfIndex();
+
+                this.validator = new MappingValidator(this.deobfToObf, deobfuscator, obfResolver);
+        }
+
+        public EntryRemapper(JarIndex jarIndex) {
+                this(jarIndex, new HashEntryTree<>(), new HashEntryTree<>());
+        }
+
+        public EntryRemapper(JarIndex jarIndex, EntryTree<EntryMapping> deobfuscationTrees) {
+                this(jarIndex, deobfuscationTrees, inverse(deobfuscationTrees));
+        }
+
+        private static EntryTree<EntryMapping> inverse(EntryTree<EntryMapping> tree) {
+                Translator translator = new MappingTranslator(tree, VoidEntryResolver.INSTANCE);
+                EntryTree<EntryMapping> inverse = new HashEntryTree<>();
+
+                // Naive approach, could operate on the nodes of the tree. However, this runs infrequently.
+                Collection<Entry<?>> entries = tree.getAllEntries();
+                for (Entry<?> sourceEntry : entries) {
+                        Entry<?> targetEntry = translator.translate(sourceEntry);
+                        inverse.insert(targetEntry, new EntryMapping(sourceEntry.getName()));
+                }
+
+                return inverse;
+        }
+
+        private void rebuildDeobfIndex() {
+                JarIndex deobfIndex = obfIndex.remapped(deobfuscator);
+
+                this.deobfResolver = deobfIndex.getEntryResolver();
+                this.obfuscator = new MappingTranslator(deobfToObf, deobfResolver);
+        }
+
+        public <E extends Entry<?>> void mapFromObf(E obfuscatedEntry, @Nullable EntryMapping deobfMapping) {
+                Collection<E> resolvedEntries = obfResolver.resolveEntry(obfuscatedEntry, ResolutionStrategy.RESOLVE_ROOT);
+                for (E resolvedEntry : resolvedEntries) {
+                        if (deobfMapping != null) {
+                                validator.validateRename(resolvedEntry, deobfMapping.getTargetName());
+                        }
+
+                        setObfToDeobf(resolvedEntry, deobfMapping);
+                }
+
+                // Temporary hack, not very performant
+                rebuildDeobfIndex();
+        }
+
+        public <E extends Entry<?>> void mapFromDeobf(E deobfuscatedEntry, @Nullable EntryMapping deobfMapping) {
+                E obfuscatedEntry = obfuscate(deobfuscatedEntry);
+                mapFromObf(obfuscatedEntry, deobfMapping);
+        }
+
+        public void removeByObf(Entry<?> obfuscatedEntry) {
+                mapFromObf(obfuscatedEntry, null);
+        }
+
+        public void removeByDeobf(Entry<?> deobfuscatedEntry) {
+                mapFromObf(obfuscate(deobfuscatedEntry), null);
+        }
+
+        private <E extends Entry<?>> void setObfToDeobf(E obfuscatedEntry, @Nullable EntryMapping deobfMapping) {
+                E prevDeobf = deobfuscate(obfuscatedEntry);
+                obfToDeobf.insert(obfuscatedEntry, deobfMapping);
+
+                E newDeobf = deobfuscate(obfuscatedEntry);
+
+                // Reconstruct the children of this node in the deobf -> obf tree with our new mapping
+                // We only need to do this for deobf -> obf because the obf tree is always consistent on the left hand side
+                // We lookup by obf, and the obf never changes. This is not the case for deobf so we need to update the tree.
+
+                EntryTreeNode<EntryMapping> node = deobfToObf.findNode(prevDeobf);
+                if (node != null) {
+                        for (EntryTreeNode<EntryMapping> child : node.getNodesRecursively()) {
+                                Entry<?> entry = child.getEntry();
+                                EntryMapping mapping = new EntryMapping(obfuscate(entry).getName());
+
+                                deobfToObf.insert(entry.replaceAncestor(prevDeobf, newDeobf), mapping);
+                                deobfToObf.remove(entry);
+                        }
+                } else {
+                        deobfToObf.insert(newDeobf, new EntryMapping(obfuscatedEntry.getName()));
+                }
+        }
+
+        @Nullable
+        public EntryMapping getDeobfMapping(Entry<?> entry) {
+                return obfToDeobf.get(entry);
+        }
+
+        @Nullable
+        public EntryMapping getObfMapping(Entry<?> entry) {
+                return deobfToObf.get(entry);
+        }
+
+        public boolean hasDeobfMapping(Entry<?> obfEntry) {
+                return obfToDeobf.contains(obfEntry);
+        }
+
+        public boolean hasObfMapping(Entry<?> deobfEntry) {
+                return deobfToObf.contains(deobfEntry);
+        }
+
+        public <T extends Translatable> T deobfuscate(T translatable) {
+                return deobfuscator.translate(translatable);
+        }
+
+        public <T extends Translatable> T obfuscate(T translatable) {
+                return obfuscator.translate(translatable);
+        }
+
+        public Translator getDeobfuscator() {
+                return deobfuscator;
+        }
+
+        public Translator getObfuscator() {
+                return obfuscator;
+        }
+
+        public Collection<Entry<?>> getObfEntries() {
+                return obfToDeobf.getAllEntries();
+        }
+
+        public Collection<Entry<?>> getObfRootEntries() {
+                return obfToDeobf.getRootEntries();
+        }
+
+        public Collection<Entry<?>> getDeobfEntries() {
+                return deobfToObf.getAllEntries();
+        }
+
+        public Collection<Entry<?>> getObfChildren(Entry<?> obfuscatedEntry) {
+                return obfToDeobf.getChildren(obfuscatedEntry);
+        }
+
+        public Collection<Entry<?>> getDeobfChildren(Entry<?> deobfuscatedEntry) {
+                return deobfToObf.getChildren(deobfuscatedEntry);
+        }
+
+        public EntryTree<EntryMapping> getObfToDeobf() {
+                return obfToDeobf;
+        }
+
+        public DeltaTrackingTree<EntryMapping> getDeobfToObf() {
+                return deobfToObf;
+        }
+
+        public MappingDelta takeMappingDelta() {
+                MappingDelta delta = deobfToObf.takeDelta();
+                return delta.translate(obfuscator, VoidEntryResolver.INSTANCE, deobfToObf);
+        }
+
+        public boolean isDirty() {
+                return deobfToObf.isDirty();
+        }
+
+        public EntryResolver getObfResolver() {
+                return obfResolver;
+        }
+
+        public EntryResolver getDeobfResolver() {
+                return deobfResolver;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/EntryResolver.java b/src/main/java/cuchaz/enigma/translation/mapping/EntryResolver.java
new file mode 100644
index 0000000..521f72d
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/EntryResolver.java
@@ -0,0 +1,41 @@
+package cuchaz.enigma.translation.mapping;
+
+import com.google.common.collect.Streams;
+import cuchaz.enigma.analysis.EntryReference;
+import cuchaz.enigma.translation.representation.entry.Entry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
+
+import java.util.Collection;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public interface EntryResolver {
+        <E extends Entry<?>> Collection<E> resolveEntry(E entry, ResolutionStrategy strategy);
+
+        default <E extends Entry<?>> E resolveFirstEntry(E entry, ResolutionStrategy strategy) {
+                return resolveEntry(entry, strategy).stream().findFirst().orElse(entry);
+        }
+
+        default <E extends Entry<?>, C extends Entry<?>> Collection<EntryReference<E, C>> resolveReference(EntryReference<E, C> reference, ResolutionStrategy strategy) {
+                Collection<E> entry = resolveEntry(reference.entry, strategy);
+                if (reference.context != null) {
+                        Collection<C> context = resolveEntry(reference.context, strategy);
+                        return Streams.zip(entry.stream(), context.stream(), (e, c) -> new EntryReference<>(e, c, reference))
+                                        .collect(Collectors.toList());
+                } else {
+                        return entry.stream()
+                                        .map(e -> new EntryReference<>(e, null, reference))
+                                        .collect(Collectors.toList());
+                }
+        }
+
+        default <E extends Entry<?>, C extends Entry<?>> EntryReference<E, C> resolveFirstReference(EntryReference<E, C> reference, ResolutionStrategy strategy) {
+                E entry = resolveFirstEntry(reference.entry, strategy);
+                C context = resolveFirstEntry(reference.context, strategy);
+                return new EntryReference<>(entry, context, reference);
+        }
+
+        Set<Entry<?>> resolveEquivalentEntries(Entry<?> entry);
+
+        Set<MethodEntry> resolveEquivalentMethods(MethodEntry methodEntry);
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/IndexEntryResolver.java b/src/main/java/cuchaz/enigma/translation/mapping/IndexEntryResolver.java
new file mode 100644
index 0000000..1f2290a
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/IndexEntryResolver.java
@@ -0,0 +1,225 @@
+package cuchaz.enigma.translation.mapping;
+
+import com.google.common.collect.Sets;
+import cuchaz.enigma.analysis.IndexTreeBuilder;
+import cuchaz.enigma.analysis.MethodImplementationsTreeNode;
+import cuchaz.enigma.analysis.MethodInheritanceTreeNode;
+import cuchaz.enigma.analysis.index.BridgeMethodIndex;
+import cuchaz.enigma.analysis.index.EntryIndex;
+import cuchaz.enigma.analysis.index.InheritanceIndex;
+import cuchaz.enigma.analysis.index.JarIndex;
+import cuchaz.enigma.translation.VoidTranslator;
+import cuchaz.enigma.translation.representation.AccessFlags;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.Entry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
+
+import javax.annotation.Nullable;
+import java.util.*;
+import java.util.stream.Collectors;
+
+public class IndexEntryResolver implements EntryResolver {
+        private final EntryIndex entryIndex;
+        private final InheritanceIndex inheritanceIndex;
+        private final BridgeMethodIndex bridgeMethodIndex;
+
+        private final IndexTreeBuilder treeBuilder;
+
+        public IndexEntryResolver(JarIndex index) {
+                this.entryIndex = index.getEntryIndex();
+                this.inheritanceIndex = index.getInheritanceIndex();
+                this.bridgeMethodIndex = index.getBridgeMethodIndex();
+
+                this.treeBuilder = new IndexTreeBuilder(index);
+        }
+
+        @Override
+        @SuppressWarnings("unchecked")
+        public <E extends Entry<?>> Collection<E> resolveEntry(E entry, ResolutionStrategy strategy) {
+                if (entry == null) {
+                        return Collections.emptySet();
+                }
+
+                Entry<ClassEntry> classChild = getClassChild(entry);
+                if (classChild != null && !(classChild instanceof ClassEntry)) {
+                        AccessFlags access = entryIndex.getEntryAccess(classChild);
+
+                        // If we're looking for the closest and this entry exists, we're done looking
+                        if (strategy == ResolutionStrategy.RESOLVE_CLOSEST && access != null) {
+                                return Collections.singleton(entry);
+                        }
+
+                        if (access == null || !access.isPrivate()) {
+                                Collection<Entry<ClassEntry>> resolvedChildren = resolveChildEntry(classChild, strategy);
+                                if (!resolvedChildren.isEmpty()) {
+                                        return resolvedChildren.stream()
+                                                        .map(resolvedChild -> (E) entry.replaceAncestor(classChild, resolvedChild))
+                                                        .collect(Collectors.toList());
+                                }
+                        }
+                }
+
+                return Collections.singleton(entry);
+        }
+
+        @Nullable
+        private Entry<ClassEntry> getClassChild(Entry<?> entry) {
+                if (entry instanceof ClassEntry) {
+                        return null;
+                }
+
+                // get the entry in the hierarchy that is the child of a class
+                List<Entry<?>> ancestry = entry.getAncestry();
+                for (int i = ancestry.size() - 1; i > 0; i--) {
+                        Entry<?> child = ancestry.get(i);
+                        Entry<ClassEntry> cast = child.castParent(ClassEntry.class);
+                        if (cast != null && !(cast instanceof ClassEntry)) {
+                                // we found the entry which is a child of a class, we are now able to resolve the owner of this entry
+                                return cast;
+                        }
+                }
+
+                return null;
+        }
+
+        private Set<Entry<ClassEntry>> resolveChildEntry(Entry<ClassEntry> entry, ResolutionStrategy strategy) {
+                ClassEntry ownerClass = entry.getParent();
+
+                if (entry instanceof MethodEntry) {
+                        MethodEntry bridgeMethod = bridgeMethodIndex.getBridgeFromAccessed((MethodEntry) entry);
+                        if (bridgeMethod != null && ownerClass.equals(bridgeMethod.getParent())) {
+                                Set<Entry<ClassEntry>> resolvedBridge = resolveChildEntry(bridgeMethod, strategy);
+                                if (!resolvedBridge.isEmpty()) {
+                                        return resolvedBridge;
+                                }
+                        }
+                }
+
+                Set<Entry<ClassEntry>> resolvedEntries = new HashSet<>();
+
+                for (ClassEntry parentClass : inheritanceIndex.getParents(ownerClass)) {
+                        Entry<ClassEntry> parentEntry = entry.withParent(parentClass);
+
+                        if (strategy == ResolutionStrategy.RESOLVE_ROOT) {
+                                resolvedEntries.addAll(resolveRoot(parentEntry, strategy));
+                        } else {
+                                resolvedEntries.addAll(resolveClosest(parentEntry, strategy));
+                        }
+                }
+
+                return resolvedEntries;
+        }
+
+        private Collection<Entry<ClassEntry>> resolveRoot(Entry<ClassEntry> entry, ResolutionStrategy strategy) {
+                // When resolving root, we want to first look for the lowest entry before returning ourselves
+                Set<Entry<ClassEntry>> parentResolution = resolveChildEntry(entry, strategy);
+
+                if (parentResolution.isEmpty()) {
+                        AccessFlags parentAccess = entryIndex.getEntryAccess(entry);
+                        if (parentAccess != null && !parentAccess.isPrivate()) {
+                                return Collections.singleton(entry);
+                        }
+                }
+
+                return parentResolution;
+        }
+
+        private Collection<Entry<ClassEntry>> resolveClosest(Entry<ClassEntry> entry, ResolutionStrategy strategy) {
+                // When resolving closest, we want to first check if we exist before looking further down
+                AccessFlags parentAccess = entryIndex.getEntryAccess(entry);
+                if (parentAccess != null && !parentAccess.isPrivate()) {
+                        return Collections.singleton(entry);
+                } else {
+                        return resolveChildEntry(entry, strategy);
+                }
+        }
+
+        @Override
+        public Set<Entry<?>> resolveEquivalentEntries(Entry<?> entry) {
+                MethodEntry relevantMethod = entry.findAncestor(MethodEntry.class);
+                if (relevantMethod == null || !entryIndex.hasMethod(relevantMethod)) {
+                        return Collections.singleton(entry);
+                }
+
+                Set<MethodEntry> equivalentMethods = resolveEquivalentMethods(relevantMethod);
+                Set<Entry<?>> equivalentEntries = new HashSet<>(equivalentMethods.size());
+
+                for (MethodEntry equivalentMethod : equivalentMethods) {
+                        Entry<?> equivalentEntry = entry.replaceAncestor(relevantMethod, equivalentMethod);
+                        equivalentEntries.add(equivalentEntry);
+                }
+
+                return equivalentEntries;
+        }
+
+        @Override
+        public Set<MethodEntry> resolveEquivalentMethods(MethodEntry methodEntry) {
+                AccessFlags access = entryIndex.getMethodAccess(methodEntry);
+                if (access == null) {
+                        throw new IllegalArgumentException("Could not find method " + methodEntry);
+                }
+
+                if (!canInherit(methodEntry, access)) {
+                        return Collections.singleton(methodEntry);
+                }
+
+                Set<MethodEntry> methodEntries = Sets.newHashSet();
+                resolveEquivalentMethods(methodEntries, treeBuilder.buildMethodInheritance(VoidTranslator.INSTANCE, methodEntry));
+                return methodEntries;
+        }
+
+        private void resolveEquivalentMethods(Set<MethodEntry> methodEntries, MethodInheritanceTreeNode node) {
+                MethodEntry methodEntry = node.getMethodEntry();
+                if (methodEntries.contains(methodEntry)) {
+                        return;
+                }
+
+                AccessFlags flags = entryIndex.getMethodAccess(methodEntry);
+                if (flags != null && canInherit(methodEntry, flags)) {
+                        // collect the entry
+                        methodEntries.add(methodEntry);
+                }
+
+                // look at bridge methods!
+                MethodEntry bridgedMethod = bridgeMethodIndex.getBridgeFromAccessed(methodEntry);
+                while (bridgedMethod != null) {
+                        methodEntries.addAll(resolveEquivalentMethods(bridgedMethod));
+                        bridgedMethod = bridgeMethodIndex.getBridgeFromAccessed(bridgedMethod);
+                }
+
+                // look at interface methods too
+                for (MethodImplementationsTreeNode implementationsNode : treeBuilder.buildMethodImplementations(VoidTranslator.INSTANCE, methodEntry)) {
+                        resolveEquivalentMethods(methodEntries, implementationsNode);
+                }
+
+                // recurse
+                for (int i = 0; i < node.getChildCount(); i++) {
+                        resolveEquivalentMethods(methodEntries, (MethodInheritanceTreeNode) node.getChildAt(i));
+                }
+        }
+
+        private void resolveEquivalentMethods(Set<MethodEntry> methodEntries, MethodImplementationsTreeNode node) {
+                MethodEntry methodEntry = node.getMethodEntry();
+                AccessFlags flags = entryIndex.getMethodAccess(methodEntry);
+                if (flags != null && !flags.isPrivate() && !flags.isStatic()) {
+                        // collect the entry
+                        methodEntries.add(methodEntry);
+                }
+
+                // look at bridge methods!
+                MethodEntry bridgedMethod = bridgeMethodIndex.getBridgeFromAccessed(methodEntry);
+                while (bridgedMethod != null) {
+                        methodEntries.addAll(resolveEquivalentMethods(bridgedMethod));
+                        bridgedMethod = bridgeMethodIndex.getBridgeFromAccessed(bridgedMethod);
+                }
+
+                // recurse
+                for (int i = 0; i < node.getChildCount(); i++) {
+                        resolveEquivalentMethods(methodEntries, (MethodImplementationsTreeNode) node.getChildAt(i));
+                }
+        }
+
+        private boolean canInherit(MethodEntry entry, AccessFlags access) {
+                return !entry.isConstructor() && !access.isPrivate() && !access.isStatic() && !access.isFinal();
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/MappingDelta.java b/src/main/java/cuchaz/enigma/translation/mapping/MappingDelta.java
new file mode 100644
index 0000000..4fba49d
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/MappingDelta.java
@@ -0,0 +1,56 @@
+package cuchaz.enigma.translation.mapping;
+
+import cuchaz.enigma.translation.Translatable;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.tree.HashEntryTree;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
+import cuchaz.enigma.translation.representation.entry.Entry;
+
+public class MappingDelta implements Translatable {
+        public static final Object PLACEHOLDER = new Object();
+
+        private final EntryTree<Object> additions;
+        private final EntryTree<Object> deletions;
+
+        public MappingDelta(EntryTree<Object> additions, EntryTree<Object> deletions) {
+                this.additions = additions;
+                this.deletions = deletions;
+        }
+
+        public MappingDelta() {
+                this(new HashEntryTree<>(), new HashEntryTree<>());
+        }
+
+        public static MappingDelta added(EntryTree<EntryMapping> mappings) {
+                EntryTree<Object> additions = new HashEntryTree<>();
+                for (Entry<?> entry : mappings.getAllEntries()) {
+                        additions.insert(entry, PLACEHOLDER);
+                }
+
+                return new MappingDelta(additions, new HashEntryTree<>());
+        }
+
+        public EntryTree<?> getAdditions() {
+                return additions;
+        }
+
+        public EntryTree<?> getDeletions() {
+                return deletions;
+        }
+
+        @Override
+        public MappingDelta translate(Translator translator, EntryResolver resolver, EntryMap<EntryMapping> mappings) {
+                return new MappingDelta(
+                                translate(translator, additions),
+                                translate(translator, deletions)
+                );
+        }
+
+        private EntryTree<Object> translate(Translator translator, EntryTree<Object> tree) {
+                EntryTree<Object> translatedTree = new HashEntryTree<>();
+                for (Entry<?> entry : tree.getAllEntries()) {
+                        translatedTree.insert(translator.translate(entry), PLACEHOLDER);
+                }
+                return translatedTree;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/MappingPair.java b/src/main/java/cuchaz/enigma/translation/mapping/MappingPair.java
new file mode 100644
index 0000000..9ed7e8a
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/MappingPair.java
@@ -0,0 +1,28 @@
+package cuchaz.enigma.translation.mapping;
+
+import cuchaz.enigma.translation.representation.entry.Entry;
+
+import javax.annotation.Nullable;
+
+public class MappingPair<E extends Entry<?>, M> {
+        private final E entry;
+        private final M mapping;
+
+        public MappingPair(E entry, @Nullable M mapping) {
+                this.entry = entry;
+                this.mapping = mapping;
+        }
+
+        public MappingPair(E entry) {
+                this(entry, null);
+        }
+
+        public E getEntry() {
+                return entry;
+        }
+
+        @Nullable
+        public M getMapping() {
+                return mapping;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/MappingValidator.java b/src/main/java/cuchaz/enigma/translation/mapping/MappingValidator.java
new file mode 100644
index 0000000..422bf38
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/MappingValidator.java
@@ -0,0 +1,45 @@
+package cuchaz.enigma.translation.mapping;
+
+import cuchaz.enigma.throwables.IllegalNameException;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
+import cuchaz.enigma.translation.representation.entry.Entry;
+
+import java.util.Collection;
+
+public class MappingValidator {
+        private final EntryTree<EntryMapping> deobfToObf;
+        private final Translator deobfuscator;
+        private final EntryResolver entryResolver;
+
+        public MappingValidator(EntryTree<EntryMapping> deobfToObf, Translator deobfuscator, EntryResolver entryResolver) {
+                this.deobfToObf = deobfToObf;
+                this.deobfuscator = deobfuscator;
+                this.entryResolver = entryResolver;
+        }
+
+        public void validateRename(Entry<?> entry, String name) throws IllegalNameException {
+                Collection<Entry<?>> equivalentEntries = entryResolver.resolveEquivalentEntries(entry);
+                for (Entry<?> equivalentEntry : equivalentEntries) {
+                        equivalentEntry.validateName(name);
+                        validateUnique(equivalentEntry, name);
+                }
+        }
+
+        private void validateUnique(Entry<?> entry, String name) {
+                Entry<?> translatedEntry = deobfuscator.translate(entry);
+                Collection<Entry<?>> siblings = deobfToObf.getSiblings(translatedEntry);
+                if (!isUnique(translatedEntry, siblings, name)) {
+                        throw new IllegalNameException(name, "Name is not unique in " + translatedEntry.getParent() + "!");
+                }
+        }
+
+        private boolean isUnique(Entry<?> entry, Collection<Entry<?>> siblings, String name) {
+                for (Entry<?> child : siblings) {
+                        if (entry.canConflictWith(child) && child.getName().equals(name)) {
+                                return false;
+                        }
+                }
+                return true;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/MappingsChecker.java b/src/main/java/cuchaz/enigma/translation/mapping/MappingsChecker.java
new file mode 100644
index 0000000..77d75ec
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/MappingsChecker.java
@@ -0,0 +1,91 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ * <p>
+ * Contributors:
+ * Jeff Martin - initial API and implementation
+ ******************************************************************************/
+
+package cuchaz.enigma.translation.mapping;
+
+import cuchaz.enigma.analysis.index.JarIndex;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
+import cuchaz.enigma.translation.mapping.tree.EntryTreeNode;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.Entry;
+import cuchaz.enigma.translation.representation.entry.FieldEntry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+
+public class MappingsChecker {
+        private final JarIndex index;
+        private final EntryTree<EntryMapping> mappings;
+
+        public MappingsChecker(JarIndex index, EntryTree<EntryMapping> mappings) {
+                this.index = index;
+                this.mappings = mappings;
+        }
+
+        public Dropped dropBrokenMappings() {
+                Dropped dropped = new Dropped();
+
+                Collection<Entry<?>> obfEntries = mappings.getAllEntries();
+                for (Entry<?> entry : obfEntries) {
+                        if (entry instanceof ClassEntry || entry instanceof MethodEntry || entry instanceof FieldEntry) {
+                                tryDropEntry(dropped, entry);
+                        }
+                }
+
+                dropped.apply(mappings);
+
+                return dropped;
+        }
+
+        private void tryDropEntry(Dropped dropped, Entry<?> entry) {
+                if (shouldDropEntry(entry)) {
+                        EntryMapping mapping = mappings.get(entry);
+                        if (mapping != null) {
+                                dropped.drop(entry, mapping);
+                        }
+                }
+        }
+
+        private boolean shouldDropEntry(Entry<?> entry) {
+                if (!index.getEntryIndex().hasEntry(entry)) {
+                        return true;
+                }
+                Collection<Entry<?>> resolvedEntries = index.getEntryResolver().resolveEntry(entry, ResolutionStrategy.RESOLVE_ROOT);
+                return !resolvedEntries.contains(entry);
+        }
+
+        public static class Dropped {
+                private final Map<Entry<?>, String> droppedMappings = new HashMap<>();
+
+                public void drop(Entry<?> entry, EntryMapping mapping) {
+                        droppedMappings.put(entry, mapping.getTargetName());
+                }
+
+                void apply(EntryTree<EntryMapping> mappings) {
+                        for (Entry<?> entry : droppedMappings.keySet()) {
+                                EntryTreeNode<EntryMapping> node = mappings.findNode(entry);
+                                if (node == null) {
+                                        continue;
+                                }
+
+                                for (Entry<?> childEntry : node.getChildrenRecursively()) {
+                                        mappings.remove(childEntry);
+                                }
+                        }
+                }
+
+                public Map<Entry<?>, String> getDroppedMappings() {
+                        return droppedMappings;
+                }
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/mapping/NameValidator.java b/src/main/java/cuchaz/enigma/translation/mapping/NameValidator.java
index fca8cfc..19473ea 100644
--- a/src/main/java/cuchaz/enigma/mapping/NameValidator.java
+++ b/src/main/java/cuchaz/enigma/translation/mapping/NameValidator.java
@@ -9,20 +9,19 @@
  * Jeff Martin - initial API and implementation
  ******************************************************************************/
 
-package cuchaz.enigma.mapping;
+package cuchaz.enigma.translation.mapping;
 
-import cuchaz.enigma.mapping.entry.ClassEntry;
 import cuchaz.enigma.throwables.IllegalNameException;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
 
 import java.util.Arrays;
 import java.util.List;
 import java.util.regex.Pattern;
 
 public class NameValidator {
-
-        private static final Pattern IdentifierPattern;
-        private static final Pattern ClassPattern;
-        private static final List<String> ReservedWords = Arrays.asList(
+        private static final Pattern IDENTIFIER_PATTERN;
+        private static final Pattern CLASS_PATTERN;
+        private static final List<String> ILLEGAL_IDENTIFIERS = Arrays.asList(
                         "abstract", "continue", "for", "new", "switch", "assert", "default", "goto", "package", "synchronized",
                         "boolean", "do", "if", "private", "this", "break", "double", "implements", "protected", "throw", "byte",
                         "else", "import", "public", "throws", "case", "enum", "instanceof", "return", "transient", "catch",
@@ -32,42 +31,26 @@ public class NameValidator {
 
         static {
                 String identifierRegex = "[A-Za-z_<][A-Za-z0-9_>]*";
-                IdentifierPattern = Pattern.compile(identifierRegex);
-                ClassPattern = Pattern.compile(String.format("^(%s(\\.|/))*(%s)$", identifierRegex, identifierRegex));
+                IDENTIFIER_PATTERN = Pattern.compile(identifierRegex);
+                CLASS_PATTERN = Pattern.compile(String.format("^(%s(\\.|/))*(%s)$", identifierRegex, identifierRegex));
         }
 
-        public static String validateClassName(String name, boolean packageRequired) {
-                if (name == null) {
-                        return null;
-                }
-                if (!ClassPattern.matcher(name).matches() || ReservedWords.contains(name)) {
+        public static void validateClassName(String name, boolean packageRequired) {
+                if (!CLASS_PATTERN.matcher(name).matches() || ILLEGAL_IDENTIFIERS.contains(name)) {
                         throw new IllegalNameException(name, "This doesn't look like a legal class name");
                 }
                 if (packageRequired && ClassEntry.getPackageName(name) == null) {
                         throw new IllegalNameException(name, "Class must be in a package");
                 }
-                return name;
         }
 
-        public static String validateFieldName(String name) {
-                if (name == null) {
-                        return null;
-                }
-                if (!IdentifierPattern.matcher(name).matches() || ReservedWords.contains(name)) {
+        public static void validateIdentifier(String name) {
+                if (!IDENTIFIER_PATTERN.matcher(name).matches() || ILLEGAL_IDENTIFIERS.contains(name)) {
                         throw new IllegalNameException(name, "This doesn't look like a legal identifier");
                 }
-                return name;
-        }
-
-        public static String validateMethodName(String name) {
-                return validateFieldName(name);
-        }
-
-        public static String validateArgumentName(String name) {
-                return validateFieldName(name);
         }
 
         public static boolean isReserved(String name) {
-                return ReservedWords.contains(name);
+                return ILLEGAL_IDENTIFIERS.contains(name);
         }
 }
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/ResolutionStrategy.java b/src/main/java/cuchaz/enigma/translation/mapping/ResolutionStrategy.java
new file mode 100644
index 0000000..1c28e02
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/ResolutionStrategy.java
@@ -0,0 +1,6 @@
+package cuchaz.enigma.translation.mapping;
+
+public enum ResolutionStrategy {
+        RESOLVE_ROOT,
+        RESOLVE_CLOSEST
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/VoidEntryResolver.java b/src/main/java/cuchaz/enigma/translation/mapping/VoidEntryResolver.java
new file mode 100644
index 0000000..2eab55f
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/VoidEntryResolver.java
@@ -0,0 +1,27 @@
+package cuchaz.enigma.translation.mapping;
+
+import cuchaz.enigma.translation.representation.entry.Entry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Set;
+
+public enum VoidEntryResolver implements EntryResolver {
+        INSTANCE;
+
+        @Override
+        public <E extends Entry<?>> Collection<E> resolveEntry(E entry, ResolutionStrategy strategy) {
+                return Collections.singleton(entry);
+        }
+
+        @Override
+        public Set<Entry<?>> resolveEquivalentEntries(Entry<?> entry) {
+                return Collections.singleton(entry);
+        }
+
+        @Override
+        public Set<MethodEntry> resolveEquivalentMethods(MethodEntry methodEntry) {
+                return Collections.singleton(methodEntry);
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/serde/EnigmaMappingsReader.java b/src/main/java/cuchaz/enigma/translation/mapping/serde/EnigmaMappingsReader.java
new file mode 100644
index 0000000..d36bc0b
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/serde/EnigmaMappingsReader.java
@@ -0,0 +1,260 @@
+package cuchaz.enigma.translation.mapping.serde;
+
+import com.google.common.base.Charsets;
+import cuchaz.enigma.throwables.MappingParseException;
+import cuchaz.enigma.translation.mapping.AccessModifier;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.MappingPair;
+import cuchaz.enigma.translation.mapping.tree.HashEntryTree;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
+import cuchaz.enigma.translation.representation.MethodDescriptor;
+import cuchaz.enigma.translation.representation.TypeDescriptor;
+import cuchaz.enigma.translation.representation.entry.*;
+
+import javax.annotation.Nullable;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayDeque;
+import java.util.Deque;
+import java.util.List;
+import java.util.Locale;
+import java.util.stream.Collectors;
+
+public enum EnigmaMappingsReader implements MappingsReader {
+        FILE {
+                @Override
+                public EntryTree<EntryMapping> read(Path path) throws IOException, MappingParseException {
+                        EntryTree<EntryMapping> mappings = new HashEntryTree<>();
+                        readFile(path, mappings);
+                        return mappings;
+                }
+        },
+        DIRECTORY {
+                @Override
+                public EntryTree<EntryMapping> read(Path path) throws IOException, MappingParseException {
+                        EntryTree<EntryMapping> mappings = new HashEntryTree<>();
+
+                        List<Path> files = Files.walk(path)
+                                        .filter(f -> !Files.isDirectory(f))
+                                        .filter(f -> f.toString().endsWith(".mapping"))
+                                        .collect(Collectors.toList());
+                        for (Path file : files) {
+                                if (Files.isHidden(file)) {
+                                        continue;
+                                }
+                                readFile(file, mappings);
+                        }
+
+                        return mappings;
+                }
+        };
+
+        protected void readFile(Path path, EntryTree<EntryMapping> mappings) throws IOException, MappingParseException {
+                List<String> lines = Files.readAllLines(path, Charsets.UTF_8);
+                Deque<Entry<?>> mappingStack = new ArrayDeque<>();
+
+                for (int lineNumber = 0; lineNumber < lines.size(); lineNumber++) {
+                        String line = lines.get(lineNumber);
+                        int indentation = countIndentation(line);
+
+                        line = formatLine(line);
+                        if (line == null) {
+                                continue;
+                        }
+
+                        while (indentation < mappingStack.size()) {
+                                mappingStack.pop();
+                        }
+
+                        try {
+                                MappingPair<?, EntryMapping> pair = parseLine(mappingStack.peek(), line);
+                                mappingStack.push(pair.getEntry());
+                                if (pair.getMapping() != null) {
+                                        mappings.insert(pair.getEntry(), pair.getMapping());
+                                }
+                        } catch (Throwable t) {
+                                t.printStackTrace();
+                                throw new MappingParseException(path::toString, lineNumber, t.toString());
+                        }
+                }
+        }
+
+        @Nullable
+        private String formatLine(String line) {
+                line = stripComment(line);
+                line = line.trim();
+
+                if (line.isEmpty()) {
+                        return null;
+                }
+
+                return line;
+        }
+
+        private String stripComment(String line) {
+                int commentPos = line.indexOf('#');
+                if (commentPos >= 0) {
+                        return line.substring(0, commentPos);
+                }
+                return line;
+        }
+
+        private int countIndentation(String line) {
+                int indent = 0;
+                for (int i = 0; i < line.length(); i++) {
+                        if (line.charAt(i) != '\t') {
+                                break;
+                        }
+                        indent++;
+                }
+                return indent;
+        }
+
+        private MappingPair<?, EntryMapping> parseLine(@Nullable Entry<?> parent, String line) {
+                String[] tokens = line.trim().split("\\s");
+                String keyToken = tokens[0].toLowerCase(Locale.ROOT);
+
+                switch (keyToken) {
+                        case "class":
+                                return parseClass(parent, tokens);
+                        case "field":
+                                return parseField(parent, tokens);
+                        case "method":
+                                return parseMethod(parent, tokens);
+                        case "arg":
+                                return parseArgument(parent, tokens);
+                        default:
+                                throw new RuntimeException("Unknown token '" + keyToken + "'");
+                }
+        }
+
+        private MappingPair<ClassEntry, EntryMapping> parseClass(@Nullable Entry<?> parent, String[] tokens) {
+                String obfuscatedName = ClassEntry.getInnerName(tokens[1]);
+                ClassEntry obfuscatedEntry;
+                if (parent instanceof ClassEntry) {
+                        obfuscatedEntry = new ClassEntry((ClassEntry) parent, obfuscatedName);
+                } else {
+                        obfuscatedEntry = new ClassEntry(obfuscatedName);
+                }
+
+                String mapping = null;
+                AccessModifier modifier = AccessModifier.UNCHANGED;
+
+                if (tokens.length == 3) {
+                        AccessModifier parsedModifier = parseModifier(tokens[2]);
+                        if (parsedModifier != null) {
+                                modifier = parsedModifier;
+                                mapping = obfuscatedName;
+                        } else {
+                                mapping = tokens[2];
+                        }
+                } else if (tokens.length == 4) {
+                        mapping = tokens[2];
+                        modifier = parseModifier(tokens[3]);
+                }
+
+                if (mapping != null) {
+                        return new MappingPair<>(obfuscatedEntry, new EntryMapping(mapping, modifier));
+                } else {
+                        return new MappingPair<>(obfuscatedEntry);
+                }
+        }
+
+        private MappingPair<FieldEntry, EntryMapping> parseField(@Nullable Entry<?> parent, String[] tokens) {
+                if (!(parent instanceof ClassEntry)) {
+                        throw new RuntimeException("Field must be a child of a class!");
+                }
+
+                ClassEntry ownerEntry = (ClassEntry) parent;
+
+                String obfuscatedName = tokens[1];
+                String mapping = obfuscatedName;
+                AccessModifier modifier = AccessModifier.UNCHANGED;
+                TypeDescriptor descriptor;
+
+                if (tokens.length == 4) {
+                        AccessModifier parsedModifier = parseModifier(tokens[3]);
+                        if (parsedModifier != null) {
+                                descriptor = new TypeDescriptor(tokens[2]);
+                                modifier = parsedModifier;
+                        } else {
+                                mapping = tokens[2];
+                                descriptor = new TypeDescriptor(tokens[3]);
+                        }
+                } else if (tokens.length == 5) {
+                        descriptor = new TypeDescriptor(tokens[3]);
+                        mapping = tokens[2];
+                        modifier = parseModifier(tokens[4]);
+                } else {
+                        throw new RuntimeException("Invalid method declaration");
+                }
+
+                FieldEntry obfuscatedEntry = new FieldEntry(ownerEntry, obfuscatedName, descriptor);
+                if (mapping != null) {
+                        return new MappingPair<>(obfuscatedEntry, new EntryMapping(mapping, modifier));
+                } else {
+                        return new MappingPair<>(obfuscatedEntry);
+                }
+        }
+
+        private MappingPair<MethodEntry, EntryMapping> parseMethod(@Nullable Entry<?> parent, String[] tokens) {
+                if (!(parent instanceof ClassEntry)) {
+                        throw new RuntimeException("Method must be a child of a class!");
+                }
+
+                ClassEntry ownerEntry = (ClassEntry) parent;
+
+                String obfuscatedName = tokens[1];
+                String mapping = null;
+                AccessModifier modifier = AccessModifier.UNCHANGED;
+                MethodDescriptor descriptor;
+
+                if (tokens.length == 3) {
+                        descriptor = new MethodDescriptor(tokens[2]);
+                } else if (tokens.length == 4) {
+                        AccessModifier parsedModifier = parseModifier(tokens[3]);
+                        if (parsedModifier != null) {
+                                modifier = parsedModifier;
+                                mapping = obfuscatedName;
+                                descriptor = new MethodDescriptor(tokens[2]);
+                        } else {
+                                mapping = tokens[2];
+                                descriptor = new MethodDescriptor(tokens[3]);
+                        }
+                } else if (tokens.length == 5) {
+                        mapping = tokens[2];
+                        modifier = parseModifier(tokens[4]);
+                        descriptor = new MethodDescriptor(tokens[3]);
+                } else {
+                        throw new RuntimeException("Invalid method declaration");
+                }
+
+                MethodEntry obfuscatedEntry = new MethodEntry(ownerEntry, obfuscatedName, descriptor);
+                if (mapping != null) {
+                        return new MappingPair<>(obfuscatedEntry, new EntryMapping(mapping, modifier));
+                } else {
+                        return new MappingPair<>(obfuscatedEntry);
+                }
+        }
+
+        private MappingPair<LocalVariableEntry, EntryMapping> parseArgument(@Nullable Entry<?> parent, String[] tokens) {
+                if (!(parent instanceof MethodEntry)) {
+                        throw new RuntimeException("Method arg must be a child of a method!");
+                }
+
+                MethodEntry ownerEntry = (MethodEntry) parent;
+                LocalVariableEntry obfuscatedEntry = new LocalVariableEntry(ownerEntry, Integer.parseInt(tokens[1]), "", true);
+                String mapping = tokens[2];
+
+                return new MappingPair<>(obfuscatedEntry, new EntryMapping(mapping));
+        }
+
+        @Nullable
+        private AccessModifier parseModifier(String token) {
+                if (token.startsWith("ACC:")) {
+                        return AccessModifier.valueOf(token.substring(4));
+                }
+                return null;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/serde/EnigmaMappingsWriter.java b/src/main/java/cuchaz/enigma/translation/mapping/serde/EnigmaMappingsWriter.java
new file mode 100644
index 0000000..3eef739
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/serde/EnigmaMappingsWriter.java
@@ -0,0 +1,260 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ *
+ * Contributors:
+ *     Jeff Martin - initial API and implementation
+ ******************************************************************************/
+
+package cuchaz.enigma.translation.mapping.serde;
+
+import cuchaz.enigma.ProgressListener;
+import cuchaz.enigma.translation.MappingTranslator;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.AccessModifier;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.MappingDelta;
+import cuchaz.enigma.translation.mapping.VoidEntryResolver;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
+import cuchaz.enigma.translation.mapping.tree.EntryTreeNode;
+import cuchaz.enigma.translation.representation.entry.*;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.nio.file.DirectoryStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.stream.Collectors;
+
+public enum EnigmaMappingsWriter implements MappingsWriter {
+        FILE {
+                @Override
+                public void write(EntryTree<EntryMapping> mappings, MappingDelta delta, Path path, ProgressListener progress) {
+                        Collection<ClassEntry> classes = mappings.getRootEntries().stream()
+                                        .filter(entry -> entry instanceof ClassEntry)
+                                        .map(entry -> (ClassEntry) entry)
+                                        .collect(Collectors.toList());
+
+                        progress.init(classes.size(), "Writing classes");
+
+                        int steps = 0;
+                        try (PrintWriter writer = new PrintWriter(Files.newBufferedWriter(path))) {
+                                for (ClassEntry classEntry : classes) {
+                                        progress.step(steps++, classEntry.getFullName());
+                                        writeRoot(writer, mappings, classEntry);
+                                }
+                        } catch (IOException e) {
+                                e.printStackTrace();
+                        }
+                }
+        },
+        DIRECTORY {
+                @Override
+                public void write(EntryTree<EntryMapping> mappings, MappingDelta delta, Path path, ProgressListener progress) {
+                        applyDeletions(delta.getDeletions(), path);
+
+                        Collection<ClassEntry> classes = delta.getAdditions().getRootEntries().stream()
+                                        .filter(entry -> entry instanceof ClassEntry)
+                                        .map(entry -> (ClassEntry) entry)
+                                        .collect(Collectors.toList());
+
+                        progress.init(classes.size(), "Writing classes");
+
+                        Translator translator = new MappingTranslator(mappings, VoidEntryResolver.INSTANCE);
+                        AtomicInteger steps = new AtomicInteger();
+
+                        classes.parallelStream().forEach(classEntry -> {
+                                progress.step(steps.getAndIncrement(), classEntry.getFullName());
+
+                                try {
+                                        Path classPath = resolve(path, translator.translate(classEntry));
+                                        Files.deleteIfExists(classPath);
+                                        Files.createDirectories(classPath.getParent());
+
+                                        try (PrintWriter writer = new PrintWriter(Files.newBufferedWriter(classPath))) {
+                                                writeRoot(writer, mappings, classEntry);
+                                        }
+                                } catch (Throwable t) {
+                                        System.err.println("Failed to write class '" + classEntry.getFullName() + "'");
+                                        t.printStackTrace();
+                                }
+                        });
+                }
+
+                private void applyDeletions(EntryTree<?> deletions, Path root) {
+                        Collection<ClassEntry> deletedClasses = deletions.getRootEntries().stream()
+                                        .filter(e -> e instanceof ClassEntry)
+                                        .map(e -> (ClassEntry) e)
+                                        .collect(Collectors.toList());
+
+                        for (ClassEntry classEntry : deletedClasses) {
+                                try {
+                                        Files.deleteIfExists(resolve(root, classEntry));
+                                } catch (IOException e) {
+                                        System.err.println("Failed to delete deleted class '" + classEntry + "'");
+                                        e.printStackTrace();
+                                }
+                        }
+
+                        for (ClassEntry classEntry : deletedClasses) {
+                                String packageName = classEntry.getPackageName();
+                                if (packageName != null) {
+                                        Path packagePath = Paths.get(packageName);
+                                        try {
+                                                deleteDeadPackages(root, packagePath);
+                                        } catch (IOException e) {
+                                                System.err.println("Failed to delete dead package '" + packageName + "'");
+                                                e.printStackTrace();
+                                        }
+                                }
+                        }
+                }
+
+                private void deleteDeadPackages(Path root, Path packagePath) throws IOException {
+                        for (int i = packagePath.getNameCount() - 1; i >= 0; i--) {
+                                Path subPath = packagePath.subpath(0, i + 1);
+                                Path packagePart = root.resolve(subPath);
+                                if (isEmpty(packagePart)) {
+                                        Files.deleteIfExists(packagePart);
+                                }
+                        }
+                }
+
+                private boolean isEmpty(Path path) {
+                        try (DirectoryStream<Path> stream = Files.newDirectoryStream(path)) {
+                                return !stream.iterator().hasNext();
+                        } catch (IOException e) {
+                                return false;
+                        }
+                }
+
+                private Path resolve(Path root, ClassEntry classEntry) {
+                        return root.resolve(classEntry.getFullName() + ".mapping");
+                }
+        };
+
+        protected void writeRoot(PrintWriter writer, EntryTree<EntryMapping> mappings, ClassEntry classEntry) {
+                Collection<Entry<?>> children = groupChildren(mappings.getChildren(classEntry));
+
+                writer.println(writeClass(classEntry, mappings.get(classEntry)).trim());
+                for (Entry<?> child : children) {
+                        writeEntry(writer, mappings, child, 1);
+                }
+        }
+
+        protected void writeEntry(PrintWriter writer, EntryTree<EntryMapping> mappings, Entry<?> entry, int depth) {
+                EntryTreeNode<EntryMapping> node = mappings.findNode(entry);
+                if (node == null) {
+                        return;
+                }
+
+                EntryMapping mapping = node.getValue();
+                if (entry instanceof ClassEntry) {
+                        String line = writeClass((ClassEntry) entry, mapping);
+                        writer.println(indent(line, depth));
+                } else if (entry instanceof MethodEntry) {
+                        String line = writeMethod((MethodEntry) entry, mapping);
+                        writer.println(indent(line, depth));
+                } else if (entry instanceof FieldEntry) {
+                        String line = writeField((FieldEntry) entry, mapping);
+                        writer.println(indent(line, depth));
+                } else if (entry instanceof LocalVariableEntry) {
+                        String line = writeArgument((LocalVariableEntry) entry, mapping);
+                        writer.println(indent(line, depth));
+                }
+
+                Collection<Entry<?>> children = groupChildren(node.getChildren());
+                for (Entry<?> child : children) {
+                        writeEntry(writer, mappings, child, depth + 1);
+                }
+        }
+
+        private Collection<Entry<?>> groupChildren(Collection<Entry<?>> children) {
+                Collection<Entry<?>> result = new ArrayList<>(children.size());
+
+                children.stream().filter(e -> e instanceof ClassEntry)
+                                .map(e -> (ClassEntry) e)
+                                .sorted()
+                                .forEach(result::add);
+
+                children.stream().filter(e -> e instanceof FieldEntry)
+                                .map(e -> (FieldEntry) e)
+                                .sorted()
+                                .forEach(result::add);
+
+                children.stream().filter(e -> e instanceof MethodEntry)
+                                .map(e -> (MethodEntry) e)
+                                .sorted()
+                                .forEach(result::add);
+
+                children.stream().filter(e -> e instanceof LocalVariableEntry)
+                                .map(e -> (LocalVariableEntry) e)
+                                .sorted()
+                                .forEach(result::add);
+
+                return result;
+        }
+
+        protected String writeClass(ClassEntry entry, EntryMapping mapping) {
+                StringBuilder builder = new StringBuilder("CLASS ");
+                builder.append(entry.getFullName()).append(' ');
+                writeMapping(builder, mapping);
+
+                return builder.toString();
+        }
+
+        protected String writeMethod(MethodEntry entry, EntryMapping mapping) {
+                StringBuilder builder = new StringBuilder("METHOD ");
+                builder.append(entry.getName()).append(' ');
+                writeMapping(builder, mapping);
+
+                builder.append(entry.getDesc().toString());
+
+                return builder.toString();
+        }
+
+        protected String writeField(FieldEntry entry, EntryMapping mapping) {
+                StringBuilder builder = new StringBuilder("FIELD ");
+                builder.append(entry.getName()).append(' ');
+                writeMapping(builder, mapping);
+
+                builder.append(entry.getDesc().toString());
+
+                return builder.toString();
+        }
+
+        protected String writeArgument(LocalVariableEntry entry, EntryMapping mapping) {
+                StringBuilder builder = new StringBuilder("ARG ");
+                builder.append(entry.getIndex()).append(' ');
+
+                String mappedName = mapping != null ? mapping.getTargetName() : entry.getName();
+                builder.append(mappedName);
+
+                return builder.toString();
+        }
+
+        private void writeMapping(StringBuilder builder, EntryMapping mapping) {
+                if (mapping != null) {
+                        builder.append(mapping.getTargetName()).append(' ');
+                        if (mapping.getAccessModifier() != AccessModifier.UNCHANGED) {
+                                builder.append(mapping.getAccessModifier().getFormattedName()).append(' ');
+                        }
+                }
+        }
+
+        private String indent(String line, int depth) {
+                StringBuilder builder = new StringBuilder();
+                for (int i = 0; i < depth; i++) {
+                        builder.append("\t");
+                }
+                builder.append(line.trim());
+                return builder.toString();
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/serde/MappingFormat.java b/src/main/java/cuchaz/enigma/translation/mapping/serde/MappingFormat.java
new file mode 100644
index 0000000..4db1645
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/serde/MappingFormat.java
@@ -0,0 +1,54 @@
+package cuchaz.enigma.translation.mapping.serde;
+
+import cuchaz.enigma.ProgressListener;
+import cuchaz.enigma.throwables.MappingParseException;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.MappingDelta;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
+
+import javax.annotation.Nullable;
+import java.io.IOException;
+import java.nio.file.Path;
+
+public enum MappingFormat {
+        ENIGMA_FILE(EnigmaMappingsWriter.FILE, EnigmaMappingsReader.FILE),
+        ENIGMA_DIRECTORY(EnigmaMappingsWriter.DIRECTORY, EnigmaMappingsReader.DIRECTORY),
+        TINY_FILE(null, TinyMappingsReader.INSTANCE),
+        SRG_FILE(SrgMappingsWriter.INSTANCE, null);
+
+        private final MappingsWriter writer;
+        private final MappingsReader reader;
+
+        MappingFormat(MappingsWriter writer, MappingsReader reader) {
+                this.writer = writer;
+                this.reader = reader;
+        }
+
+        public void write(EntryTree<EntryMapping> mappings, Path path, ProgressListener progressListener)  {
+                write(mappings, MappingDelta.added(mappings), path, progressListener);
+        }
+
+        public void write(EntryTree<EntryMapping> mappings, MappingDelta delta, Path path, ProgressListener progressListener)  {
+                if (writer == null) {
+                        throw new IllegalStateException(name() + " does not support writing");
+                }
+                writer.write(mappings, delta, path, progressListener);
+        }
+
+        public EntryTree<EntryMapping> read(Path path) throws IOException, MappingParseException {
+                if (reader == null) {
+                        throw new IllegalStateException(name() + " does not support reading");
+                }
+                return reader.read(path);
+        }
+
+        @Nullable
+        public MappingsWriter getWriter() {
+                return writer;
+        }
+
+        @Nullable
+        public MappingsReader getReader() {
+                return reader;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/serde/MappingsReader.java b/src/main/java/cuchaz/enigma/translation/mapping/serde/MappingsReader.java
new file mode 100644
index 0000000..f239ee6
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/serde/MappingsReader.java
@@ -0,0 +1,12 @@
+package cuchaz.enigma.translation.mapping.serde;
+
+import cuchaz.enigma.throwables.MappingParseException;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
+
+import java.io.IOException;
+import java.nio.file.Path;
+
+public interface MappingsReader {
+        EntryTree<EntryMapping> read(Path path) throws MappingParseException, IOException;
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/serde/MappingsWriter.java b/src/main/java/cuchaz/enigma/translation/mapping/serde/MappingsWriter.java
new file mode 100644
index 0000000..b519668
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/serde/MappingsWriter.java
@@ -0,0 +1,12 @@
+package cuchaz.enigma.translation.mapping.serde;
+
+import cuchaz.enigma.ProgressListener;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.MappingDelta;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
+
+import java.nio.file.Path;
+
+public interface MappingsWriter {
+        void write(EntryTree<EntryMapping> mappings, MappingDelta delta, Path path, ProgressListener progress);
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/serde/SrgMappingsWriter.java b/src/main/java/cuchaz/enigma/translation/mapping/serde/SrgMappingsWriter.java
new file mode 100644
index 0000000..15ba4d7
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/serde/SrgMappingsWriter.java
@@ -0,0 +1,115 @@
+package cuchaz.enigma.translation.mapping.serde;
+
+import com.google.common.collect.Lists;
+import cuchaz.enigma.ProgressListener;
+import cuchaz.enigma.translation.MappingTranslator;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.MappingDelta;
+import cuchaz.enigma.translation.mapping.VoidEntryResolver;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
+import cuchaz.enigma.translation.mapping.tree.EntryTreeNode;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.Entry;
+import cuchaz.enigma.translation.representation.entry.FieldEntry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public enum SrgMappingsWriter implements MappingsWriter {
+        INSTANCE;
+
+        @Override
+        public void write(EntryTree<EntryMapping> mappings, MappingDelta delta, Path path, ProgressListener progress) {
+                try {
+                        Files.deleteIfExists(path);
+                        Files.createFile(path);
+                } catch (IOException e) {
+                        e.printStackTrace();
+                }
+
+                List<String> classLines = new ArrayList<>();
+                List<String> fieldLines = new ArrayList<>();
+                List<String> methodLines = new ArrayList<>();
+
+                Collection<Entry<?>> rootEntries = Lists.newArrayList(mappings).stream()
+                                .map(EntryTreeNode::getEntry)
+                                .collect(Collectors.toList());
+                progress.init(rootEntries.size(), "Generating mappings");
+
+                int steps = 0;
+                for (Entry<?> entry : sorted(rootEntries)) {
+                        progress.step(steps++, entry.getName());
+                        writeEntry(classLines, fieldLines, methodLines, mappings, entry);
+                }
+
+                progress.init(3, "Writing mappings");
+                try (PrintWriter writer = new PrintWriter(Files.newBufferedWriter(path))) {
+                        progress.step(0, "Classes");
+                        classLines.forEach(writer::println);
+                        progress.step(1, "Fields");
+                        fieldLines.forEach(writer::println);
+                        progress.step(2, "Methods");
+                        methodLines.forEach(writer::println);
+                } catch (IOException e) {
+                        e.printStackTrace();
+                }
+        }
+
+        private void writeEntry(List<String> classes, List<String> fields, List<String> methods, EntryTree<EntryMapping> mappings, Entry<?> entry) {
+                EntryTreeNode<EntryMapping> node = mappings.findNode(entry);
+                if (node == null) {
+                        return;
+                }
+
+                Translator translator = new MappingTranslator(mappings, VoidEntryResolver.INSTANCE);
+                if (entry instanceof ClassEntry) {
+                        classes.add(generateClassLine((ClassEntry) entry, translator));
+                } else if (entry instanceof FieldEntry) {
+                        fields.add(generateFieldLine((FieldEntry) entry, translator));
+                } else if (entry instanceof MethodEntry) {
+                        methods.add(generateMethodLine((MethodEntry) entry, translator));
+                }
+
+                for (Entry<?> child : sorted(node.getChildren())) {
+                        writeEntry(classes, fields, methods, mappings, child);
+                }
+        }
+
+        private String generateClassLine(ClassEntry sourceEntry, Translator translator) {
+                ClassEntry targetEntry = translator.translate(sourceEntry);
+                return "CL: " + sourceEntry.getFullName() + " " + targetEntry.getFullName();
+        }
+
+        private String generateMethodLine(MethodEntry sourceEntry, Translator translator) {
+                MethodEntry targetEntry = translator.translate(sourceEntry);
+                return "MD: " + describeMethod(sourceEntry) + " " + describeMethod(targetEntry);
+        }
+
+        private String describeMethod(MethodEntry entry) {
+                return entry.getParent().getFullName() + "/" + entry.getName() + " " + entry.getDesc();
+        }
+
+        private String generateFieldLine(FieldEntry sourceEntry, Translator translator) {
+                FieldEntry targetEntry = translator.translate(sourceEntry);
+                return "FD: " + describeField(sourceEntry) + " " + describeField(targetEntry);
+        }
+
+        private String describeField(FieldEntry entry) {
+                return entry.getParent().getFullName() + "/" + entry.getName();
+        }
+
+        private Collection<Entry<?>> sorted(Iterable<Entry<?>> iterable) {
+                ArrayList<Entry<?>> sorted = Lists.newArrayList(iterable);
+                sorted.sort(Comparator.comparing(Entry::getName));
+                return sorted;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/serde/TinyMappingsReader.java b/src/main/java/cuchaz/enigma/translation/mapping/serde/TinyMappingsReader.java
new file mode 100644
index 0000000..e0afc3e
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/serde/TinyMappingsReader.java
@@ -0,0 +1,100 @@
+package cuchaz.enigma.translation.mapping.serde;
+
+import com.google.common.base.Charsets;
+import cuchaz.enigma.throwables.MappingParseException;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.MappingPair;
+import cuchaz.enigma.translation.mapping.tree.HashEntryTree;
+import cuchaz.enigma.translation.mapping.tree.EntryTree;
+import cuchaz.enigma.translation.representation.MethodDescriptor;
+import cuchaz.enigma.translation.representation.TypeDescriptor;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.FieldEntry;
+import cuchaz.enigma.translation.representation.entry.LocalVariableEntry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+
+public enum TinyMappingsReader implements MappingsReader {
+        INSTANCE;
+
+        @Override
+        public EntryTree<EntryMapping> read(Path path) throws IOException, MappingParseException {
+                return read(path, Files.readAllLines(path, Charsets.UTF_8));
+        }
+
+        private EntryTree<EntryMapping> read(Path path, List<String> lines) throws MappingParseException {
+                EntryTree<EntryMapping> mappings = new HashEntryTree<>();
+                lines.remove(0);
+
+                for (int lineNumber = 0; lineNumber < lines.size(); lineNumber++) {
+                        String line = lines.get(lineNumber);
+
+                        try {
+                                MappingPair<?, EntryMapping> mapping = parseLine(line);
+                                mappings.insert(mapping.getEntry(), mapping.getMapping());
+                        } catch (Throwable t) {
+                                t.printStackTrace();
+                                throw new MappingParseException(path::toString, lineNumber, t.toString());
+                        }
+                }
+
+                return mappings;
+        }
+
+        private MappingPair<?, EntryMapping> parseLine(String line) {
+                String[] tokens = line.split("\t");
+
+                String key = tokens[0];
+                switch (key) {
+                        case "CLASS":
+                                return parseClass(tokens);
+                        case "FIELD":
+                                return parseField(tokens);
+                        case "METHOD":
+                                return parseMethod(tokens);
+                        case "MTH-ARG":
+                                return parseArgument(tokens);
+                        default:
+                                throw new RuntimeException("Unknown token '" + key + "'!");
+                }
+        }
+
+        private MappingPair<ClassEntry, EntryMapping> parseClass(String[] tokens) {
+                ClassEntry obfuscatedEntry = new ClassEntry(tokens[1]);
+                String mapping = tokens[2];
+                return new MappingPair<>(obfuscatedEntry, new EntryMapping(mapping));
+        }
+
+        private MappingPair<FieldEntry, EntryMapping> parseField(String[] tokens) {
+                ClassEntry ownerClass = new ClassEntry(tokens[1]);
+                TypeDescriptor descriptor = new TypeDescriptor(tokens[2]);
+
+                FieldEntry obfuscatedEntry = new FieldEntry(ownerClass, tokens[3], descriptor);
+                String mapping = tokens[4];
+                return new MappingPair<>(obfuscatedEntry, new EntryMapping(mapping));
+        }
+
+        private MappingPair<MethodEntry, EntryMapping> parseMethod(String[] tokens) {
+                ClassEntry ownerClass = new ClassEntry(tokens[1]);
+                MethodDescriptor descriptor = new MethodDescriptor(tokens[2]);
+
+                MethodEntry obfuscatedEntry = new MethodEntry(ownerClass, tokens[3], descriptor);
+                String mapping = tokens[4];
+                return new MappingPair<>(obfuscatedEntry, new EntryMapping(mapping));
+        }
+
+        private MappingPair<LocalVariableEntry, EntryMapping> parseArgument(String[] tokens) {
+                ClassEntry ownerClass = new ClassEntry(tokens[1]);
+                MethodDescriptor ownerDescriptor = new MethodDescriptor(tokens[2]);
+                MethodEntry ownerMethod = new MethodEntry(ownerClass, tokens[3], ownerDescriptor);
+                int variableIndex = Integer.parseInt(tokens[4]);
+
+                String mapping = tokens[5];
+                LocalVariableEntry obfuscatedEntry = new LocalVariableEntry(ownerMethod, variableIndex, "", true);
+                return new MappingPair<>(obfuscatedEntry, new EntryMapping(mapping));
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/tree/DeltaTrackingTree.java b/src/main/java/cuchaz/enigma/translation/mapping/tree/DeltaTrackingTree.java
new file mode 100644
index 0000000..98a01df
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/tree/DeltaTrackingTree.java
@@ -0,0 +1,113 @@
+package cuchaz.enigma.translation.mapping.tree;
+
+import cuchaz.enigma.translation.mapping.MappingDelta;
+import cuchaz.enigma.translation.representation.entry.Entry;
+
+import javax.annotation.Nullable;
+import java.util.Collection;
+import java.util.Iterator;
+
+public class DeltaTrackingTree<T> implements EntryTree<T> {
+        private final EntryTree<T> delegate;
+
+        private EntryTree<Object> additions = new HashEntryTree<>();
+        private EntryTree<Object> deletions = new HashEntryTree<>();
+
+        public DeltaTrackingTree(EntryTree<T> delegate) {
+                this.delegate = delegate;
+        }
+
+        public DeltaTrackingTree() {
+                this(new HashEntryTree<>());
+        }
+
+        @Override
+        public void insert(Entry<?> entry, T value) {
+                if (value != null) {
+                        trackAddition(entry);
+                } else {
+                        trackDeletion(entry);
+                }
+                delegate.insert(entry, value);
+        }
+
+        @Nullable
+        @Override
+        public T remove(Entry<?> entry) {
+                T value = delegate.remove(entry);
+                trackDeletion(entry);
+                return value;
+        }
+
+        public void trackAddition(Entry<?> entry) {
+                deletions.remove(entry);
+                additions.insert(entry, MappingDelta.PLACEHOLDER);
+        }
+
+        public void trackDeletion(Entry<?> entry) {
+                additions.remove(entry);
+                deletions.insert(entry, MappingDelta.PLACEHOLDER);
+        }
+
+        @Nullable
+        @Override
+        public T get(Entry<?> entry) {
+                return delegate.get(entry);
+        }
+
+        @Override
+        public Collection<Entry<?>> getChildren(Entry<?> entry) {
+                return delegate.getChildren(entry);
+        }
+
+        @Override
+        public Collection<Entry<?>> getSiblings(Entry<?> entry) {
+                return delegate.getSiblings(entry);
+        }
+
+        @Nullable
+        @Override
+        public EntryTreeNode<T> findNode(Entry<?> entry) {
+                return delegate.findNode(entry);
+        }
+
+        @Override
+        public Collection<EntryTreeNode<T>> getAllNodes() {
+                return delegate.getAllNodes();
+        }
+
+        @Override
+        public Collection<Entry<?>> getRootEntries() {
+                return delegate.getRootEntries();
+        }
+
+        @Override
+        public Collection<Entry<?>> getAllEntries() {
+                return delegate.getAllEntries();
+        }
+
+        @Override
+        public boolean isEmpty() {
+                return delegate.isEmpty();
+        }
+
+        @Override
+        public Iterator<EntryTreeNode<T>> iterator() {
+                return delegate.iterator();
+        }
+
+        public MappingDelta takeDelta() {
+                MappingDelta delta = new MappingDelta(additions, deletions);
+                resetDelta();
+                return delta;
+        }
+
+        private void resetDelta() {
+                additions = new HashEntryTree<>();
+                deletions = new HashEntryTree<>();
+        }
+
+        public boolean isDirty() {
+                return !additions.isEmpty() || !deletions.isEmpty();
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/tree/EntryTree.java b/src/main/java/cuchaz/enigma/translation/mapping/tree/EntryTree.java
new file mode 100644
index 0000000..73fe12d
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/tree/EntryTree.java
@@ -0,0 +1,20 @@
+package cuchaz.enigma.translation.mapping.tree;
+
+import cuchaz.enigma.translation.mapping.EntryMap;
+import cuchaz.enigma.translation.representation.entry.Entry;
+
+import javax.annotation.Nullable;
+import java.util.Collection;
+
+public interface EntryTree<T> extends EntryMap<T>, Iterable<EntryTreeNode<T>> {
+        Collection<Entry<?>> getChildren(Entry<?> entry);
+
+        Collection<Entry<?>> getSiblings(Entry<?> entry);
+
+        @Nullable
+        EntryTreeNode<T> findNode(Entry<?> entry);
+
+        Collection<EntryTreeNode<T>> getAllNodes();
+
+        Collection<Entry<?>> getRootEntries();
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/tree/EntryTreeNode.java b/src/main/java/cuchaz/enigma/translation/mapping/tree/EntryTreeNode.java
new file mode 100644
index 0000000..734b60c
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/tree/EntryTreeNode.java
@@ -0,0 +1,36 @@
+package cuchaz.enigma.translation.mapping.tree;
+
+import cuchaz.enigma.translation.representation.entry.Entry;
+
+import javax.annotation.Nullable;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.stream.Collectors;
+
+public interface EntryTreeNode<T> {
+        @Nullable
+        T getValue();
+
+        Entry<?> getEntry();
+
+        boolean isEmpty();
+
+        Collection<Entry<?>> getChildren();
+
+        Collection<? extends EntryTreeNode<T>> getChildNodes();
+
+        default Collection<? extends EntryTreeNode<T>> getNodesRecursively() {
+                Collection<EntryTreeNode<T>> nodes = new ArrayList<>();
+                nodes.add(this);
+                for (EntryTreeNode<T> node : getChildNodes()) {
+                        nodes.addAll(node.getNodesRecursively());
+                }
+                return nodes;
+        }
+
+        default Collection<Entry<?>> getChildrenRecursively() {
+                return getNodesRecursively().stream()
+                                .map(EntryTreeNode::getEntry)
+                                .collect(Collectors.toList());
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/tree/HashEntryTree.java b/src/main/java/cuchaz/enigma/translation/mapping/tree/HashEntryTree.java
new file mode 100644
index 0000000..ff88bf9
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/tree/HashEntryTree.java
@@ -0,0 +1,159 @@
+package cuchaz.enigma.translation.mapping.tree;
+
+import cuchaz.enigma.translation.representation.entry.Entry;
+
+import javax.annotation.Nullable;
+import java.util.*;
+import java.util.stream.Collectors;
+
+public class HashEntryTree<T> implements EntryTree<T> {
+        private final Map<Entry<?>, HashTreeNode<T>> root = new HashMap<>();
+
+        @Override
+        public void insert(Entry<?> entry, T value) {
+                List<HashTreeNode<T>> path = computePath(entry);
+                path.get(path.size() - 1).putValue(value);
+                if (value == null) {
+                        removeDeadAlong(path);
+                }
+        }
+
+        @Override
+        @Nullable
+        public T remove(Entry<?> entry) {
+                List<HashTreeNode<T>> path = computePath(entry);
+                T value = path.get(path.size() - 1).removeValue();
+
+                removeDeadAlong(path);
+
+                return value;
+        }
+
+        @Override
+        @Nullable
+        public T get(Entry<?> entry) {
+                HashTreeNode<T> node = findNode(entry);
+                if (node == null) {
+                        return null;
+                }
+                return node.getValue();
+        }
+
+        @Override
+        public boolean contains(Entry<?> entry) {
+                return get(entry) != null;
+        }
+
+        @Override
+        public Collection<Entry<?>> getChildren(Entry<?> entry) {
+                HashTreeNode<T> leaf = findNode(entry);
+                if (leaf == null) {
+                        return Collections.emptyList();
+                }
+                return leaf.getChildren();
+        }
+
+        @Override
+        public Collection<Entry<?>> getSiblings(Entry<?> entry) {
+                List<HashTreeNode<T>> path = computePath(entry);
+                if (path.size() <= 1) {
+                        return getSiblings(entry, root.keySet());
+                }
+                HashTreeNode<T> parent = path.get(path.size() - 2);
+                return getSiblings(entry, parent.getChildren());
+        }
+
+        private Collection<Entry<?>> getSiblings(Entry<?> entry, Collection<Entry<?>> children) {
+                Set<Entry<?>> siblings = new HashSet<>(children);
+                siblings.remove(entry);
+                return siblings;
+        }
+
+        @Override
+        @Nullable
+        public HashTreeNode<T> findNode(Entry<?> target) {
+                List<Entry<?>> parentChain = target.getAncestry();
+                if (parentChain.isEmpty()) {
+                        return null;
+                }
+
+                HashTreeNode<T> node = root.get(parentChain.get(0));
+                for (int i = 1; i < parentChain.size(); i++) {
+                        if (node == null) {
+                                return null;
+                        }
+                        node = node.getChild(parentChain.get(i), false);
+                }
+
+                return node;
+        }
+
+        private List<HashTreeNode<T>> computePath(Entry<?> target) {
+                List<Entry<?>> ancestry = target.getAncestry();
+                if (ancestry.isEmpty()) {
+                        return Collections.emptyList();
+                }
+
+                List<HashTreeNode<T>> path = new ArrayList<>(ancestry.size());
+
+                Entry<?> rootEntry = ancestry.get(0);
+                HashTreeNode<T> node = root.computeIfAbsent(rootEntry, HashTreeNode::new);
+                path.add(node);
+
+                for (int i = 1; i < ancestry.size(); i++) {
+                        node = node.getChild(ancestry.get(i), true);
+                        path.add(node);
+                }
+
+                return path;
+        }
+
+        private void removeDeadAlong(List<HashTreeNode<T>> path) {
+                for (int i = path.size() - 1; i >= 0; i--) {
+                        HashTreeNode<T> node = path.get(i);
+                        if (node.isEmpty()) {
+                                if (i > 0) {
+                                        HashTreeNode<T> parentNode = path.get(i - 1);
+                                        parentNode.remove(node.getEntry());
+                                } else {
+                                        root.remove(node.getEntry());
+                                }
+                        } else {
+                                break;
+                        }
+                }
+        }
+
+        @Override
+        @SuppressWarnings("unchecked")
+        public Iterator<EntryTreeNode<T>> iterator() {
+                Collection<EntryTreeNode<T>> values = (Collection) root.values();
+                return values.iterator();
+        }
+
+        @Override
+        public Collection<EntryTreeNode<T>> getAllNodes() {
+                Collection<EntryTreeNode<T>> nodes = new ArrayList<>();
+                for (EntryTreeNode<T> node : root.values()) {
+                        nodes.addAll(node.getNodesRecursively());
+                }
+                return nodes;
+        }
+
+        @Override
+        public Collection<Entry<?>> getAllEntries() {
+                return getAllNodes().stream()
+                                .map(EntryTreeNode::getEntry)
+                                .collect(Collectors.toList());
+        }
+
+        @Override
+        public Collection<Entry<?>> getRootEntries() {
+                return root.keySet();
+        }
+
+        @Override
+        public boolean isEmpty() {
+                return root.isEmpty();
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/mapping/tree/HashTreeNode.java b/src/main/java/cuchaz/enigma/translation/mapping/tree/HashTreeNode.java
new file mode 100644
index 0000000..90e9164
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/mapping/tree/HashTreeNode.java
@@ -0,0 +1,72 @@
+package cuchaz.enigma.translation.mapping.tree;
+
+import cuchaz.enigma.translation.representation.entry.Entry;
+
+import javax.annotation.Nullable;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+public class HashTreeNode<T> implements EntryTreeNode<T>, Iterable<HashTreeNode<T>> {
+        private final Entry<?> entry;
+        private final Map<Entry<?>, HashTreeNode<T>> children = new HashMap<>();
+        private T value;
+
+        HashTreeNode(Entry<?> entry) {
+                this.entry = entry;
+        }
+
+        void putValue(T value) {
+                this.value = value;
+        }
+
+        T removeValue() {
+                T value = this.value;
+                this.value = null;
+                return value;
+        }
+
+        HashTreeNode<T> getChild(Entry<?> entry, boolean create) {
+                if (create) {
+                        return children.computeIfAbsent(entry, HashTreeNode::new);
+                } else {
+                        return children.get(entry);
+                }
+        }
+
+        void remove(Entry<?> entry) {
+                children.remove(entry);
+        }
+
+        @Override
+        @Nullable
+        public T getValue() {
+                return value;
+        }
+
+        @Override
+        public Entry<?> getEntry() {
+                return entry;
+        }
+
+        @Override
+        public boolean isEmpty() {
+                return children.isEmpty() && value == null;
+        }
+
+        @Override
+        public Collection<Entry<?>> getChildren() {
+                return children.keySet();
+        }
+
+        @Override
+        public Collection<? extends EntryTreeNode<T>> getChildNodes() {
+                return children.values();
+        }
+
+        @Override
+        public Iterator<HashTreeNode<T>> iterator() {
+                return children.values().iterator();
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/bytecode/AccessFlags.java b/src/main/java/cuchaz/enigma/translation/representation/AccessFlags.java
index 31c8691..0534edd 100644
--- a/src/main/java/cuchaz/enigma/bytecode/AccessFlags.java
+++ b/src/main/java/cuchaz/enigma/translation/representation/AccessFlags.java
@@ -1,4 +1,4 @@
-package cuchaz.enigma.bytecode;
+package cuchaz.enigma.translation.representation;
 
 import cuchaz.enigma.analysis.Access;
 import org.objectweb.asm.Opcodes;
@@ -6,6 +6,9 @@ import org.objectweb.asm.Opcodes;
 import java.lang.reflect.Modifier;
 
 public class AccessFlags {
+        public static final AccessFlags PRIVATE = new AccessFlags(Opcodes.ACC_PRIVATE);
+        public static final AccessFlags PUBLIC = new AccessFlags(Opcodes.ACC_PUBLIC);
+
         private int flags;
 
         public AccessFlags(int flags) {
@@ -40,6 +43,10 @@ public class AccessFlags {
                 return (flags & Opcodes.ACC_BRIDGE) != 0;
         }
 
+        public boolean isFinal() {
+                return (flags & Opcodes.ACC_FINAL) != 0;
+        }
+
         public AccessFlags setPrivate() {
                 this.setVisibility(Opcodes.ACC_PRIVATE);
                 return this;
diff --git a/src/main/java/cuchaz/enigma/mapping/MethodDescriptor.java b/src/main/java/cuchaz/enigma/translation/representation/MethodDescriptor.java
index 0fc0351..c59751f 100644
--- a/src/main/java/cuchaz/enigma/mapping/MethodDescriptor.java
+++ b/src/main/java/cuchaz/enigma/translation/representation/MethodDescriptor.java
@@ -9,17 +9,22 @@
  * Jeff Martin - initial API and implementation
  ******************************************************************************/
 
-package cuchaz.enigma.mapping;
+package cuchaz.enigma.translation.representation;
 
 import com.google.common.collect.Lists;
-import cuchaz.enigma.mapping.entry.ClassEntry;
+import cuchaz.enigma.translation.Translatable;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.EntryResolver;
+import cuchaz.enigma.translation.mapping.EntryMap;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
 import cuchaz.enigma.utils.Utils;
 
 import java.util.ArrayList;
 import java.util.List;
 import java.util.function.Function;
 
-public class MethodDescriptor {
+public class MethodDescriptor implements Translatable {
 
         private List<TypeDescriptor> argumentDescs;
         private TypeDescriptor returnDesc;
@@ -111,4 +116,17 @@ public class MethodDescriptor {
                 }
                 return new MethodDescriptor(argumentDescs, returnDesc.remap(remapper));
         }
+
+        @Override
+        public Translatable translate(Translator translator, EntryResolver resolver, EntryMap<EntryMapping> mappings) {
+                List<TypeDescriptor> translatedArguments = new ArrayList<>(argumentDescs.size());
+                for (TypeDescriptor argument : argumentDescs) {
+                        translatedArguments.add(translator.translate(argument));
+                }
+                return new MethodDescriptor(translatedArguments, translator.translate(returnDesc));
+        }
+
+        public boolean canConflictWith(MethodDescriptor descriptor) {
+                return descriptor.argumentDescs.equals(argumentDescs);
+        }
 }
diff --git a/src/main/java/cuchaz/enigma/mapping/entry/ProcyonEntryFactory.java b/src/main/java/cuchaz/enigma/translation/representation/ProcyonEntryFactory.java
index 73770c5..9c9fa3d 100644
--- a/src/main/java/cuchaz/enigma/mapping/entry/ProcyonEntryFactory.java
+++ b/src/main/java/cuchaz/enigma/translation/representation/ProcyonEntryFactory.java
@@ -9,15 +9,12 @@
  * Jeff Martin - initial API and implementation
  ******************************************************************************/
 
-package cuchaz.enigma.mapping.entry;
+package cuchaz.enigma.translation.representation;
 
 import com.strobel.assembler.metadata.FieldDefinition;
 import com.strobel.assembler.metadata.MemberReference;
 import com.strobel.assembler.metadata.MethodDefinition;
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.MethodDescriptor;
-import cuchaz.enigma.mapping.Signature;
-import cuchaz.enigma.mapping.TypeDescriptor;
+import cuchaz.enigma.translation.representation.entry.*;
 
 public class ProcyonEntryFactory {
         private final ReferencedEntryPool entryPool;
diff --git a/src/main/java/cuchaz/enigma/mapping/entry/ReferencedEntryPool.java b/src/main/java/cuchaz/enigma/translation/representation/ReferencedEntryPool.java
index 12b3955..631b375 100644
--- a/src/main/java/cuchaz/enigma/mapping/entry/ReferencedEntryPool.java
+++ b/src/main/java/cuchaz/enigma/translation/representation/ReferencedEntryPool.java
@@ -9,10 +9,11 @@
  * Jeff Martin - initial API and implementation
  ******************************************************************************/
 
-package cuchaz.enigma.mapping.entry;
+package cuchaz.enigma.translation.representation;
 
-import cuchaz.enigma.mapping.MethodDescriptor;
-import cuchaz.enigma.mapping.TypeDescriptor;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
+import cuchaz.enigma.translation.representation.entry.FieldEntry;
+import cuchaz.enigma.translation.representation.entry.MethodEntry;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -38,7 +39,7 @@ public class ReferencedEntryPool {
 
         public MethodEntry getMethod(ClassEntry ownerEntry, String name, MethodDescriptor desc) {
                 String key = name + desc.toString();
-                return getClassMethods(ownerEntry.getName()).computeIfAbsent(key, s -> new MethodEntry(ownerEntry, name, desc));
+                return getClassMethods(ownerEntry.getFullName()).computeIfAbsent(key, s -> new MethodEntry(ownerEntry, name, desc));
         }
 
         public FieldEntry getField(ClassEntry ownerEntry, String name, String desc) {
@@ -46,7 +47,7 @@ public class ReferencedEntryPool {
         }
 
         public FieldEntry getField(ClassEntry ownerEntry, String name, TypeDescriptor desc) {
-                return getClassFields(ownerEntry.getName()).computeIfAbsent(name, s -> new FieldEntry(ownerEntry, name, desc));
+                return getClassFields(ownerEntry.getFullName()).computeIfAbsent(name, s -> new FieldEntry(ownerEntry, name, desc));
         }
 
         private Map<String, MethodEntry> getClassMethods(String name) {
diff --git a/src/main/java/cuchaz/enigma/mapping/Signature.java b/src/main/java/cuchaz/enigma/translation/representation/Signature.java
index 071e4af..dc241b7 100644
--- a/src/main/java/cuchaz/enigma/mapping/Signature.java
+++ b/src/main/java/cuchaz/enigma/translation/representation/Signature.java
@@ -1,6 +1,12 @@
-package cuchaz.enigma.mapping;
+package cuchaz.enigma.translation.representation;
 
 import cuchaz.enigma.bytecode.translators.TranslationSignatureVisitor;
+import cuchaz.enigma.translation.Translatable;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.EntryResolver;
+import cuchaz.enigma.translation.mapping.EntryMap;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
 import org.objectweb.asm.signature.SignatureReader;
 import org.objectweb.asm.signature.SignatureVisitor;
 import org.objectweb.asm.signature.SignatureWriter;
@@ -8,7 +14,7 @@ import org.objectweb.asm.signature.SignatureWriter;
 import java.util.function.Function;
 import java.util.regex.Pattern;
 
-public class Signature {
+public class Signature implements Translatable {
         private static final Pattern OBJECT_PATTERN = Pattern.compile(".*:Ljava/lang/Object;:.*");
 
         private final String signature;
@@ -79,4 +85,9 @@ public class Signature {
         public String toString() {
                 return signature;
         }
+
+        @Override
+        public Translatable translate(Translator translator, EntryResolver resolver, EntryMap<EntryMapping> mappings) {
+                return remap(name -> translator.translate(new ClassEntry(name)).getFullName());
+        }
 }
diff --git a/src/main/java/cuchaz/enigma/mapping/TypeDescriptor.java b/src/main/java/cuchaz/enigma/translation/representation/TypeDescriptor.java
index 6e58aa0..f7ba849 100644
--- a/src/main/java/cuchaz/enigma/mapping/TypeDescriptor.java
+++ b/src/main/java/cuchaz/enigma/translation/representation/TypeDescriptor.java
@@ -9,16 +9,21 @@
  * Jeff Martin - initial API and implementation
  ******************************************************************************/
 
-package cuchaz.enigma.mapping;
+package cuchaz.enigma.translation.representation;
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Maps;
-import cuchaz.enigma.mapping.entry.ClassEntry;
+import cuchaz.enigma.translation.Translatable;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.EntryResolver;
+import cuchaz.enigma.translation.mapping.EntryMap;
+import cuchaz.enigma.translation.representation.entry.ClassEntry;
 
 import java.util.Map;
 import java.util.function.Function;
 
-public class TypeDescriptor {
+public class TypeDescriptor implements Translatable {
 
         protected final String desc;
 
@@ -164,7 +169,7 @@ public class TypeDescriptor {
                 if (!isArray()) {
                         throw new IllegalStateException("not an array");
                 }
-                return new TypeDescriptor(this.desc.substring(getArrayDimension(), this.desc.length()));
+                return new TypeDescriptor(this.desc.substring(getArrayDimension()));
         }
 
         public boolean containsType() {
@@ -188,7 +193,7 @@ public class TypeDescriptor {
         public TypeDescriptor remap(Function<String, String> remapper) {
                 String desc = this.desc;
                 if (isType() || (isArray() && containsType())) {
-                        String replacedName = remapper.apply(this.getTypeEntry().getName());
+                        String replacedName = remapper.apply(this.getTypeEntry().getFullName());
                         if (replacedName != null) {
                                 if (this.isType()) {
                                         desc = "L" + replacedName + ";";
@@ -222,6 +227,11 @@ public class TypeDescriptor {
                 }
         }
 
+        @Override
+        public Translatable translate(Translator translator, EntryResolver resolver, EntryMap<EntryMapping> mappings) {
+                return remap(name -> translator.translate(new ClassEntry(name)).getFullName());
+        }
+
         public enum Primitive {
                 BYTE('B'),
                 CHARACTER('C'),
diff --git a/src/main/java/cuchaz/enigma/translation/representation/entry/ClassDefEntry.java b/src/main/java/cuchaz/enigma/translation/representation/entry/ClassDefEntry.java
new file mode 100644
index 0000000..b9391b0
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/representation/entry/ClassDefEntry.java
@@ -0,0 +1,92 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ * <p>
+ * Contributors:
+ * Jeff Martin - initial API and implementation
+ ******************************************************************************/
+
+package cuchaz.enigma.translation.representation.entry;
+
+import com.google.common.base.Preconditions;
+import com.strobel.assembler.metadata.TypeDefinition;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.representation.AccessFlags;
+import cuchaz.enigma.translation.representation.Signature;
+
+import javax.annotation.Nullable;
+import java.util.Arrays;
+
+public class ClassDefEntry extends ClassEntry implements DefEntry<ClassEntry> {
+        private final AccessFlags access;
+        private final Signature signature;
+        private final ClassEntry superClass;
+        private final ClassEntry[] interfaces;
+
+        public ClassDefEntry(String className, Signature signature, AccessFlags access, @Nullable ClassEntry superClass, ClassEntry[] interfaces) {
+                this(getOuterClass(className), getInnerName(className), signature, access, superClass, interfaces);
+        }
+
+        public ClassDefEntry(ClassEntry parent, String className, Signature signature, AccessFlags access, @Nullable ClassEntry superClass, ClassEntry[] interfaces) {
+                super(parent, className);
+                Preconditions.checkNotNull(signature, "Class signature cannot be null");
+                Preconditions.checkNotNull(access, "Class access cannot be null");
+
+                this.signature = signature;
+                this.access = access;
+                this.superClass = superClass;
+                this.interfaces = interfaces != null ? interfaces : new ClassEntry[0];
+        }
+
+        public static ClassDefEntry parse(int access, String name, String signature, String superName, String[] interfaces) {
+                ClassEntry superClass = superName != null ? new ClassEntry(superName) : null;
+                ClassEntry[] interfaceClasses = Arrays.stream(interfaces).map(ClassEntry::new).toArray(ClassEntry[]::new);
+                return new ClassDefEntry(name, Signature.createSignature(signature), new AccessFlags(access), superClass, interfaceClasses);
+        }
+
+        public static ClassDefEntry parse(TypeDefinition def) {
+                String name = def.getInternalName();
+                Signature signature = Signature.createSignature(def.getSignature());
+                AccessFlags access = new AccessFlags(def.getModifiers());
+                ClassEntry superClass = def.getBaseType() != null ? ClassEntry.parse(def.getBaseType()) : null;
+                ClassEntry[] interfaces = def.getExplicitInterfaces().stream().map(ClassEntry::parse).toArray(ClassEntry[]::new);
+                return new ClassDefEntry(name, signature, access, superClass, interfaces);
+        }
+
+        public Signature getSignature() {
+                return signature;
+        }
+
+        @Override
+        public AccessFlags getAccess() {
+                return access;
+        }
+
+        @Nullable
+        public ClassEntry getSuperClass() {
+                return superClass;
+        }
+
+        public ClassEntry[] getInterfaces() {
+                return interfaces;
+        }
+
+        @Override
+        public ClassDefEntry translate(Translator translator, @Nullable EntryMapping mapping) {
+                Signature translatedSignature = translator.translate(signature);
+                String translatedName = mapping != null ? mapping.getTargetName() : name;
+                AccessFlags translatedAccess = mapping != null ? mapping.getAccessModifier().transform(access) : access;
+                ClassEntry translatedSuper = translator.translate(superClass);
+                ClassEntry[] translatedInterfaces = Arrays.stream(interfaces).map(translator::translate).toArray(ClassEntry[]::new);
+                return new ClassDefEntry(parent, translatedName, translatedSignature, translatedAccess, translatedSuper, translatedInterfaces);
+        }
+
+        @Override
+        public ClassDefEntry withParent(ClassEntry parent) {
+                return new ClassDefEntry(parent, name, signature, access, superClass, interfaces);
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/representation/entry/ClassEntry.java b/src/main/java/cuchaz/enigma/translation/representation/entry/ClassEntry.java
new file mode 100644
index 0000000..dcbb8d9
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/representation/entry/ClassEntry.java
@@ -0,0 +1,180 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ * <p>
+ * Contributors:
+ * Jeff Martin - initial API and implementation
+ ******************************************************************************/
+
+package cuchaz.enigma.translation.representation.entry;
+
+import com.strobel.assembler.metadata.TypeReference;
+import cuchaz.enigma.throwables.IllegalNameException;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.NameValidator;
+
+import javax.annotation.Nullable;
+import java.util.List;
+import java.util.Objects;
+
+public class ClassEntry extends ParentedEntry<ClassEntry> implements Comparable<ClassEntry> {
+        private final String fullName;
+
+        public ClassEntry(String className) {
+                this(getOuterClass(className), getInnerName(className));
+        }
+
+        public ClassEntry(@Nullable ClassEntry parent, String className) {
+                super(parent, className);
+                if (parent != null) {
+                        fullName = parent.getFullName() + "$" + name;
+                } else {
+                        fullName = name;
+                }
+
+                if (parent == null && className.indexOf('.') >= 0) {
+                        throw new IllegalArgumentException("Class name must be in JVM format. ie, path/to/package/class$inner : " + className);
+                }
+        }
+
+        public static ClassEntry parse(TypeReference typeReference) {
+                return new ClassEntry(typeReference.getInternalName());
+        }
+
+        @Override
+        public Class<ClassEntry> getParentType() {
+                return ClassEntry.class;
+        }
+
+        @Override
+        public String getName() {
+                return this.name;
+        }
+
+        public String getFullName() {
+                return fullName;
+        }
+
+        @Override
+        public ClassEntry translate(Translator translator, @Nullable EntryMapping mapping) {
+                String translatedName = mapping != null ? mapping.getTargetName() : name;
+                return new ClassEntry(parent, translatedName);
+        }
+
+        @Override
+        public ClassEntry getContainingClass() {
+                return this;
+        }
+
+        @Override
+        public int hashCode() {
+                return fullName.hashCode();
+        }
+
+        @Override
+        public boolean equals(Object other) {
+                return other instanceof ClassEntry && equals((ClassEntry) other);
+        }
+
+        public boolean equals(ClassEntry other) {
+                return other != null && Objects.equals(parent, other.parent) && this.name.equals(other.name);
+        }
+
+        @Override
+        public boolean canConflictWith(Entry<?> entry) {
+                return true;
+        }
+
+        @Override
+        public void validateName(String name) throws IllegalNameException {
+                NameValidator.validateClassName(name, !isInnerClass());
+        }
+
+        @Override
+        public ClassEntry withParent(ClassEntry parent) {
+                return new ClassEntry(parent, name);
+        }
+
+        @Override
+        public String toString() {
+                return getFullName();
+        }
+
+        public String getPackageName() {
+                return getPackageName(this.name);
+        }
+
+        public String getSimpleName() {
+                int packagePos = name.lastIndexOf('/');
+                if (packagePos > 0) {
+                        return name.substring(packagePos + 1);
+                }
+                return name;
+        }
+
+        public boolean isInnerClass() {
+                return parent != null;
+        }
+
+        @Nullable
+        public ClassEntry getOuterClass() {
+                return parent;
+        }
+
+        public ClassEntry buildClassEntry(List<ClassEntry> classChain) {
+                assert (classChain.contains(this));
+                StringBuilder buf = new StringBuilder();
+                for (ClassEntry chainEntry : classChain) {
+                        if (buf.length() == 0) {
+                                buf.append(chainEntry.getFullName());
+                        } else {
+                                buf.append("$");
+                                buf.append(chainEntry.getSimpleName());
+                        }
+
+                        if (chainEntry == this) {
+                                break;
+                        }
+                }
+                return new ClassEntry(buf.toString());
+        }
+
+        public boolean isJre() {
+                String packageName = getPackageName();
+                return packageName != null && (packageName.startsWith("java") || packageName.startsWith("javax"));
+        }
+
+        public static String getPackageName(String name) {
+                int pos = name.lastIndexOf('/');
+                if (pos > 0) {
+                        return name.substring(0, pos);
+                }
+                return null;
+        }
+
+        @Nullable
+        public static ClassEntry getOuterClass(String name) {
+                int index = name.lastIndexOf('$');
+                if (index >= 0) {
+                        return new ClassEntry(name.substring(0, index));
+                }
+                return null;
+        }
+
+        public static String getInnerName(String name) {
+                int innerClassPos = name.lastIndexOf('$');
+                if (innerClassPos > 0) {
+                        return name.substring(innerClassPos + 1);
+                }
+                return name;
+        }
+
+        @Override
+        public int compareTo(ClassEntry entry) {
+                return name.compareTo(entry.name);
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/representation/entry/DefEntry.java b/src/main/java/cuchaz/enigma/translation/representation/entry/DefEntry.java
new file mode 100644
index 0000000..82536c7
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/representation/entry/DefEntry.java
@@ -0,0 +1,7 @@
+package cuchaz.enigma.translation.representation.entry;
+
+import cuchaz.enigma.translation.representation.AccessFlags;
+
+public interface DefEntry<P extends Entry<?>> extends Entry<P> {
+        AccessFlags getAccess();
+}
diff --git a/src/main/java/cuchaz/enigma/translation/representation/entry/Entry.java b/src/main/java/cuchaz/enigma/translation/representation/entry/Entry.java
new file mode 100644
index 0000000..1a2ca78
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/representation/entry/Entry.java
@@ -0,0 +1,99 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ * <p>
+ * Contributors:
+ * Jeff Martin - initial API and implementation
+ ******************************************************************************/
+
+package cuchaz.enigma.translation.representation.entry;
+
+import cuchaz.enigma.throwables.IllegalNameException;
+import cuchaz.enigma.translation.Translatable;
+import cuchaz.enigma.translation.mapping.NameValidator;
+
+import javax.annotation.Nullable;
+import java.util.ArrayList;
+import java.util.List;
+
+public interface Entry<P extends Entry<?>> extends Translatable {
+        String getName();
+
+        @Nullable
+        P getParent();
+
+        Class<P> getParentType();
+
+        Entry<P> withParent(P parent);
+
+        boolean canConflictWith(Entry<?> entry);
+
+        @Nullable
+        default ClassEntry getContainingClass() {
+                P parent = getParent();
+                if (parent == null) {
+                        return null;
+                }
+                if (parent instanceof ClassEntry) {
+                        return (ClassEntry) parent;
+                }
+                return parent.getContainingClass();
+        }
+
+        default List<Entry<?>> getAncestry() {
+                P parent = getParent();
+                List<Entry<?>> entries = new ArrayList<>();
+                if (parent != null) {
+                        entries.addAll(parent.getAncestry());
+                }
+                entries.add(this);
+                return entries;
+        }
+
+        @Nullable
+        @SuppressWarnings("unchecked")
+        default <E extends Entry<?>> E findAncestor(Class<E> type) {
+                List<Entry<?>> ancestry = getAncestry();
+                for (int i = ancestry.size() - 1; i >= 0; i--) {
+                        Entry<?> ancestor = ancestry.get(i);
+                        if (type.isAssignableFrom(ancestor.getClass())) {
+                                return (E) ancestor;
+                        }
+                }
+                return null;
+        }
+
+        @SuppressWarnings("unchecked")
+        default <E extends Entry<?>> Entry<P> replaceAncestor(E target, E replacement) {
+                if (replacement.equals(target)) {
+                        return this;
+                }
+
+                if (equals(target)) {
+                        return (Entry<P>) replacement;
+                }
+
+                P parent = getParent();
+                if (parent == null) {
+                        return this;
+                }
+
+                return withParent((P) parent.replaceAncestor(target, replacement));
+        }
+
+        default void validateName(String name) throws IllegalNameException {
+                NameValidator.validateIdentifier(name);
+        }
+
+        @SuppressWarnings("unchecked")
+        @Nullable
+        default <C extends Entry<?>> Entry<C> castParent(Class<C> parentType) {
+                if (parentType.equals(getParentType())) {
+                        return (Entry<C>) this;
+                }
+                return null;
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/representation/entry/FieldDefEntry.java b/src/main/java/cuchaz/enigma/translation/representation/entry/FieldDefEntry.java
new file mode 100644
index 0000000..d487f71
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/representation/entry/FieldDefEntry.java
@@ -0,0 +1,61 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ * <p>
+ * Contributors:
+ * Jeff Martin - initial API and implementation
+ ******************************************************************************/
+
+package cuchaz.enigma.translation.representation.entry;
+
+import com.google.common.base.Preconditions;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.representation.AccessFlags;
+import cuchaz.enigma.translation.representation.Signature;
+import cuchaz.enigma.translation.representation.TypeDescriptor;
+
+import javax.annotation.Nullable;
+
+public class FieldDefEntry extends FieldEntry implements DefEntry<ClassEntry> {
+        private final AccessFlags access;
+        private final Signature signature;
+
+        public FieldDefEntry(ClassEntry owner, String name, TypeDescriptor desc, Signature signature, AccessFlags access) {
+                super(owner, name, desc);
+                Preconditions.checkNotNull(access, "Field access cannot be null");
+                Preconditions.checkNotNull(signature, "Field signature cannot be null");
+                this.access = access;
+                this.signature = signature;
+        }
+
+        public static FieldDefEntry parse(ClassEntry owner, int access, String name, String desc, String signature) {
+                return new FieldDefEntry(owner, name, new TypeDescriptor(desc), Signature.createTypedSignature(signature), new AccessFlags(access));
+        }
+
+        @Override
+        public AccessFlags getAccess() {
+                return access;
+        }
+
+        public Signature getSignature() {
+                return signature;
+        }
+
+        @Override
+        public FieldDefEntry translate(Translator translator, @Nullable EntryMapping mapping) {
+                TypeDescriptor translatedDesc = translator.translate(desc);
+                Signature translatedSignature = translator.translate(signature);
+                String translatedName = mapping != null ? mapping.getTargetName() : name;
+                AccessFlags translatedAccess = mapping != null ? mapping.getAccessModifier().transform(access) : access;
+                return new FieldDefEntry(parent, translatedName, translatedDesc, translatedSignature, translatedAccess);
+        }
+
+        @Override
+        public FieldDefEntry withParent(ClassEntry owner) {
+                return new FieldDefEntry(owner, this.name, this.desc, signature, access);
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/representation/entry/FieldEntry.java b/src/main/java/cuchaz/enigma/translation/representation/entry/FieldEntry.java
new file mode 100644
index 0000000..2ec2471
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/representation/entry/FieldEntry.java
@@ -0,0 +1,86 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ * <p>
+ * Contributors:
+ * Jeff Martin - initial API and implementation
+ ******************************************************************************/
+
+package cuchaz.enigma.translation.representation.entry;
+
+import com.google.common.base.Preconditions;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.representation.TypeDescriptor;
+import cuchaz.enigma.utils.Utils;
+
+import javax.annotation.Nullable;
+
+public class FieldEntry extends ParentedEntry<ClassEntry> implements Comparable<FieldEntry> {
+        protected final TypeDescriptor desc;
+
+        public FieldEntry(ClassEntry parent, String name, TypeDescriptor desc) {
+                super(parent, name);
+
+                Preconditions.checkNotNull(parent, "Owner cannot be null");
+                Preconditions.checkNotNull(desc, "Field descriptor cannot be null");
+
+                this.desc = desc;
+        }
+
+        public static FieldEntry parse(String owner, String name, String desc) {
+                return new FieldEntry(new ClassEntry(owner), name, new TypeDescriptor(desc));
+        }
+
+        @Override
+        public Class<ClassEntry> getParentType() {
+                return ClassEntry.class;
+        }
+
+        public TypeDescriptor getDesc() {
+                return this.desc;
+        }
+
+        @Override
+        public FieldEntry withParent(ClassEntry parent) {
+                return new FieldEntry(parent, this.name, this.desc);
+        }
+
+        @Override
+        protected FieldEntry translate(Translator translator, @Nullable EntryMapping mapping) {
+                String translatedName = mapping != null ? mapping.getTargetName() : name;
+                return new FieldEntry(parent, translatedName, translator.translate(desc));
+        }
+
+        @Override
+        public int hashCode() {
+                return Utils.combineHashesOrdered(this.parent, this.name, this.desc);
+        }
+
+        @Override
+        public boolean equals(Object other) {
+                return other instanceof FieldEntry && equals((FieldEntry) other);
+        }
+
+        public boolean equals(FieldEntry other) {
+                return this.parent.equals(other.parent) && name.equals(other.name) && desc.equals(other.desc);
+        }
+
+        @Override
+        public boolean canConflictWith(Entry<?> entry) {
+                return entry instanceof FieldEntry && ((FieldEntry) entry).parent.equals(parent);
+        }
+
+        @Override
+        public String toString() {
+                return this.parent.getFullName() + "." + this.name + ":" + this.desc;
+        }
+
+        @Override
+        public int compareTo(FieldEntry entry) {
+                return (name + desc.toString()).compareTo(entry.name + entry.desc.toString());
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/representation/entry/LocalVariableDefEntry.java b/src/main/java/cuchaz/enigma/translation/representation/entry/LocalVariableDefEntry.java
new file mode 100644
index 0000000..86bdf61
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/representation/entry/LocalVariableDefEntry.java
@@ -0,0 +1,45 @@
+package cuchaz.enigma.translation.representation.entry;
+
+import com.google.common.base.Preconditions;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.representation.TypeDescriptor;
+
+import javax.annotation.Nullable;
+
+/**
+ * TypeDescriptor...
+ * Created by Thog
+ * 19/10/2016
+ */
+public class LocalVariableDefEntry extends LocalVariableEntry {
+        protected final TypeDescriptor desc;
+
+        public LocalVariableDefEntry(MethodEntry ownerEntry, int index, String name, boolean parameter, TypeDescriptor desc) {
+                super(ownerEntry, index, name, parameter);
+                Preconditions.checkNotNull(desc, "Variable desc cannot be null");
+
+                this.desc = desc;
+        }
+
+        public TypeDescriptor getDesc() {
+                return desc;
+        }
+
+        @Override
+        public LocalVariableDefEntry translate(Translator translator, @Nullable EntryMapping mapping) {
+                TypeDescriptor translatedDesc = translator.translate(desc);
+                String translatedName = mapping != null ? mapping.getTargetName() : name;
+                return new LocalVariableDefEntry(parent, index, translatedName, parameter, translatedDesc);
+        }
+
+        @Override
+        public LocalVariableDefEntry withParent(MethodEntry entry) {
+                return new LocalVariableDefEntry(entry, index, name, parameter, desc);
+        }
+
+        @Override
+        public String toString() {
+                return this.parent + "(" + this.index + ":" + this.name + ":" + this.desc + ")";
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/representation/entry/LocalVariableEntry.java b/src/main/java/cuchaz/enigma/translation/representation/entry/LocalVariableEntry.java
new file mode 100644
index 0000000..df96b59
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/representation/entry/LocalVariableEntry.java
@@ -0,0 +1,92 @@
+package cuchaz.enigma.translation.representation.entry;
+
+import com.google.common.base.Preconditions;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.utils.Utils;
+
+import javax.annotation.Nullable;
+
+/**
+ * TypeDescriptor...
+ * Created by Thog
+ * 19/10/2016
+ */
+public class LocalVariableEntry extends ParentedEntry<MethodEntry> implements Comparable<LocalVariableEntry> {
+
+        protected final int index;
+        protected final boolean parameter;
+
+        @Deprecated
+        public LocalVariableEntry(MethodEntry parent, int index, String name) {
+                this(parent, index, name, true);
+        }
+
+        public LocalVariableEntry(MethodEntry parent, int index, String name, boolean parameter) {
+                super(parent, name);
+
+                Preconditions.checkNotNull(parent, "Variable owner cannot be null");
+                Preconditions.checkArgument(index >= 0, "Index must be positive");
+
+                this.index = index;
+                this.parameter = parameter;
+        }
+
+        @Override
+        public Class<MethodEntry> getParentType() {
+                return MethodEntry.class;
+        }
+
+        public boolean isParameter() {
+                return this.parameter;
+        }
+
+        public int getIndex() {
+                return index;
+        }
+
+        @Override
+        public String getName() {
+                return this.name;
+        }
+
+        @Override
+        public LocalVariableEntry translate(Translator translator, @Nullable EntryMapping mapping) {
+                String translatedName = mapping != null ? mapping.getTargetName() : name;
+                return new LocalVariableEntry(parent, index, translatedName, parameter);
+        }
+
+        @Override
+        public LocalVariableEntry withParent(MethodEntry parent) {
+                return new LocalVariableEntry(parent, index, name, parameter);
+        }
+
+        @Override
+        public int hashCode() {
+                return Utils.combineHashesOrdered(this.parent, this.index);
+        }
+
+        @Override
+        public boolean equals(Object other) {
+                return other instanceof LocalVariableEntry && equals((LocalVariableEntry) other);
+        }
+
+        public boolean equals(LocalVariableEntry other) {
+                return this.parent.equals(other.parent) && this.index == other.index;
+        }
+
+        @Override
+        public boolean canConflictWith(Entry<?> entry) {
+                return entry instanceof LocalVariableEntry && ((LocalVariableEntry) entry).parent.equals(parent);
+        }
+
+        @Override
+        public String toString() {
+                return this.parent + "(" + this.index + ":" + this.name + ")";
+        }
+
+        @Override
+        public int compareTo(LocalVariableEntry entry) {
+                return Integer.compare(index, entry.index);
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/mapping/entry/MethodDefEntry.java b/src/main/java/cuchaz/enigma/translation/representation/entry/MethodDefEntry.java
index fa9e668..3ecd470 100644
--- a/src/main/java/cuchaz/enigma/mapping/entry/MethodDefEntry.java
+++ b/src/main/java/cuchaz/enigma/translation/representation/entry/MethodDefEntry.java
@@ -9,26 +9,33 @@
  * Jeff Martin - initial API and implementation
  ******************************************************************************/
 
-package cuchaz.enigma.mapping.entry;
+package cuchaz.enigma.translation.representation.entry;
 
 import com.google.common.base.Preconditions;
-import cuchaz.enigma.bytecode.AccessFlags;
-import cuchaz.enigma.mapping.MethodDescriptor;
-import cuchaz.enigma.mapping.Signature;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.representation.AccessFlags;
+import cuchaz.enigma.translation.representation.MethodDescriptor;
+import cuchaz.enigma.translation.representation.Signature;
 
-public class MethodDefEntry extends MethodEntry implements DefEntry {
+import javax.annotation.Nullable;
 
+public class MethodDefEntry extends MethodEntry implements DefEntry<ClassEntry> {
         private final AccessFlags access;
         private final Signature signature;
 
-        public MethodDefEntry(ClassEntry classEntry, String name, MethodDescriptor descriptor, Signature signature, AccessFlags access) {
-                super(classEntry, name, descriptor);
+        public MethodDefEntry(ClassEntry owner, String name, MethodDescriptor descriptor, Signature signature, AccessFlags access) {
+                super(owner, name, descriptor);
                 Preconditions.checkNotNull(access, "Method access cannot be null");
                 Preconditions.checkNotNull(signature, "Method signature cannot be null");
                 this.access = access;
                 this.signature = signature;
         }
 
+        public static MethodDefEntry parse(ClassEntry owner, int access, String name, String desc, String signature) {
+                return new MethodDefEntry(owner, name, new MethodDescriptor(desc), Signature.createSignature(signature), new AccessFlags(access));
+        }
+
         @Override
         public AccessFlags getAccess() {
                 return access;
@@ -39,8 +46,17 @@ public class MethodDefEntry extends MethodEntry implements DefEntry {
         }
 
         @Override
-        public MethodDefEntry updateOwnership(ClassEntry classEntry) {
-                return new MethodDefEntry(new ClassEntry(classEntry.getName()), name, descriptor, signature, access);
+        public MethodDefEntry translate(Translator translator, @Nullable EntryMapping mapping) {
+                MethodDescriptor translatedDesc = translator.translate(descriptor);
+                Signature translatedSignature = translator.translate(signature);
+                String translatedName = mapping != null ? mapping.getTargetName() : name;
+                AccessFlags translatedAccess = mapping != null ? mapping.getAccessModifier().transform(access) : access;
+                return new MethodDefEntry(parent, translatedName, translatedDesc, translatedSignature, translatedAccess);
+        }
+
+        @Override
+        public MethodDefEntry withParent(ClassEntry parent) {
+                return new MethodDefEntry(new ClassEntry(parent.getFullName()), name, descriptor, signature, access);
         }
 
         public int getArgumentIndex(ClassDefEntry ownerEntry, int localVariableIndex) {
diff --git a/src/main/java/cuchaz/enigma/translation/representation/entry/MethodEntry.java b/src/main/java/cuchaz/enigma/translation/representation/entry/MethodEntry.java
new file mode 100644
index 0000000..3a1dbb3
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/representation/entry/MethodEntry.java
@@ -0,0 +1,95 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ * <p>
+ * Contributors:
+ * Jeff Martin - initial API and implementation
+ ******************************************************************************/
+
+package cuchaz.enigma.translation.representation.entry;
+
+import com.google.common.base.Preconditions;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.representation.MethodDescriptor;
+import cuchaz.enigma.utils.Utils;
+
+import javax.annotation.Nullable;
+
+public class MethodEntry extends ParentedEntry<ClassEntry> implements Comparable<MethodEntry> {
+
+        protected final MethodDescriptor descriptor;
+
+        public MethodEntry(ClassEntry parent, String name, MethodDescriptor descriptor) {
+                super(parent, name);
+
+                Preconditions.checkNotNull(parent, "Parent cannot be null");
+                Preconditions.checkNotNull(descriptor, "Method descriptor cannot be null");
+
+                this.descriptor = descriptor;
+        }
+
+        public static MethodEntry parse(String owner, String name, String desc) {
+                return new MethodEntry(new ClassEntry(owner), name, new MethodDescriptor(desc));
+        }
+
+        @Override
+        public Class<ClassEntry> getParentType() {
+                return ClassEntry.class;
+        }
+
+        public MethodDescriptor getDesc() {
+                return this.descriptor;
+        }
+
+        public boolean isConstructor() {
+                return name.equals("<init>") || name.equals("<clinit>");
+        }
+
+        @Override
+        public MethodEntry translate(Translator translator, @Nullable EntryMapping mapping) {
+                String translatedName = mapping != null ? mapping.getTargetName() : name;
+                return new MethodEntry(parent, translatedName, translator.translate(descriptor));
+        }
+
+        @Override
+        public MethodEntry withParent(ClassEntry parent) {
+                return new MethodEntry(new ClassEntry(parent.getFullName()), name, descriptor);
+        }
+
+        @Override
+        public int hashCode() {
+                return Utils.combineHashesOrdered(this.parent, this.name, this.descriptor);
+        }
+
+        @Override
+        public boolean equals(Object other) {
+                return other instanceof MethodEntry && equals((MethodEntry) other);
+        }
+
+        public boolean equals(MethodEntry other) {
+                return this.parent.equals(other.getParent()) && this.name.equals(other.getName()) && this.descriptor.equals(other.getDesc());
+        }
+
+        @Override
+        public boolean canConflictWith(Entry<?> entry) {
+                if (entry instanceof MethodEntry) {
+                        MethodEntry methodEntry = (MethodEntry) entry;
+                        return methodEntry.parent.equals(parent) && methodEntry.descriptor.canConflictWith(descriptor);
+                }
+                return false;
+        }
+
+        @Override
+        public String toString() {
+                return this.parent.getFullName() + "." + this.name + this.descriptor;
+        }
+
+        @Override
+        public int compareTo(MethodEntry entry) {
+                return (name + descriptor.toString()).compareTo(entry.name + entry.descriptor.toString());
+        }
+}
diff --git a/src/main/java/cuchaz/enigma/translation/representation/entry/ParentedEntry.java b/src/main/java/cuchaz/enigma/translation/representation/entry/ParentedEntry.java
new file mode 100644
index 0000000..7ba7c19
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/representation/entry/ParentedEntry.java
@@ -0,0 +1,71 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ * <p>
+ * Contributors:
+ * Jeff Martin - initial API and implementation
+ ******************************************************************************/
+
+package cuchaz.enigma.translation.representation.entry;
+
+import com.google.common.base.Preconditions;
+import cuchaz.enigma.translation.Translatable;
+import cuchaz.enigma.translation.Translator;
+import cuchaz.enigma.translation.mapping.EntryMap;
+import cuchaz.enigma.translation.mapping.EntryMapping;
+import cuchaz.enigma.translation.mapping.EntryResolver;
+import cuchaz.enigma.translation.mapping.ResolutionStrategy;
+
+import javax.annotation.Nullable;
+
+public abstract class ParentedEntry<P extends Entry<?>> implements Entry<P> {
+        protected final P parent;
+        protected final String name;
+
+        protected ParentedEntry(P parent, String name) {
+                this.parent = parent;
+                this.name = name;
+
+                Preconditions.checkNotNull(name, "Name cannot be null");
+        }
+
+        @Override
+        public abstract ParentedEntry<P> withParent(P parent);
+
+        protected abstract ParentedEntry<P> translate(Translator translator, @Nullable EntryMapping mapping);
+
+        @Override
+        public String getName() {
+                return name;
+        }
+
+        @Override
+        @Nullable
+        public P getParent() {
+                return parent;
+        }
+
+        @Override
+        public Translatable translate(Translator translator, EntryResolver resolver, EntryMap<EntryMapping> mappings) {
+                P parent = getParent();
+                EntryMapping mapping = resolveMapping(resolver, mappings);
+                if (parent == null) {
+                        return translate(translator, mapping);
+                }
+                P translatedParent = translator.translate(parent);
+                return withParent(translatedParent).translate(translator, mapping);
+        }
+
+        private EntryMapping resolveMapping(EntryResolver resolver, EntryMap<EntryMapping> mappings) {
+                for (ParentedEntry<P> entry : resolver.resolveEntry(this, ResolutionStrategy.RESOLVE_ROOT)) {
+                        EntryMapping mapping = mappings.get(entry);
+                        if (mapping != null) {
+                                return mapping;
+                        }
+                }
+                return null;
+        }
+}