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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.ResolutionStrategy;
import cuchaz.enigma.translation.representation.MethodDescriptor;
import cuchaz.enigma.translation.representation.TypeDescriptor;
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();
private Multimap<ClassEntry, EntryReference<ClassEntry, FieldDefEntry>> fieldTypeReferences = HashMultimap.create();
private Multimap<ClassEntry, EntryReference<ClassEntry, MethodDefEntry>> methodTypeReferences = HashMultimap.create();
@Override
public void indexMethod(MethodDefEntry methodEntry) {
indexMethodDescriptor(methodEntry, methodEntry.getDesc());
}
private void indexMethodDescriptor(MethodDefEntry entry, MethodDescriptor descriptor) {
for (TypeDescriptor typeDescriptor : descriptor.getArgumentDescs()) {
indexMethodTypeDescriptor(entry, typeDescriptor);
}
indexMethodTypeDescriptor(entry, descriptor.getReturnDesc());
}
private void indexMethodTypeDescriptor(MethodDefEntry method, TypeDescriptor typeDescriptor) {
if (typeDescriptor.isType()) {
ClassEntry referencedClass = typeDescriptor.getTypeEntry();
methodTypeReferences.put(referencedClass, new EntryReference<>(referencedClass, referencedClass.getName(), method));
} else if (typeDescriptor.isArray()) {
indexMethodTypeDescriptor(method, typeDescriptor.getArrayType());
}
}
@Override
public void indexField(FieldDefEntry fieldEntry) {
indexFieldTypeDescriptor(fieldEntry, fieldEntry.getDesc());
}
private void indexFieldTypeDescriptor(FieldDefEntry field, TypeDescriptor typeDescriptor) {
if (typeDescriptor.isType()) {
ClassEntry referencedClass = typeDescriptor.getTypeEntry();
fieldTypeReferences.put(referencedClass, new EntryReference<>(referencedClass, referencedClass.getName(), field));
} else if (typeDescriptor.isArray()) {
indexFieldTypeDescriptor(field, typeDescriptor.getArrayType());
}
}
@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));
}
indexMethodDescriptor(callerEntry, referencedEntry.getDesc());
}
@Override
public void indexFieldReference(MethodDefEntry callerEntry, FieldEntry referencedEntry) {
referencesToFields.put(referencedEntry, new EntryReference<>(referencedEntry, referencedEntry.getName(), callerEntry));
}
@Override
public void processIndex(JarIndex index) {
methodReferences = remapReferences(index, methodReferences);
referencesToMethods = remapReferencesTo(index, referencesToMethods);
referencesToClasses = remapReferencesTo(index, referencesToClasses);
referencesToFields = remapReferencesTo(index, referencesToFields);
fieldTypeReferences = remapReferencesTo(index, fieldTypeReferences);
methodTypeReferences = remapReferencesTo(index, methodTypeReferences);
}
private <K extends Entry<?>, V extends Entry<?>> Multimap<K, V> remapReferences(JarIndex index, Multimap<K, V> multimap) {
Multimap<K, V> resolved = HashMultimap.create(multimap.keySet().size(), multimap.size() / multimap.keySet().size());
for (Map.Entry<K, V> entry : multimap.entries()) {
resolved.put(remap(index, entry.getKey()), remap(index, entry.getValue()));
}
return resolved;
}
private <E extends Entry<?>, C extends Entry<?>> Multimap<E, EntryReference<E, C>> remapReferencesTo(JarIndex index, Multimap<E, EntryReference<E, C>> multimap) {
final int keySetSize = multimap.keySet().size();
Multimap<E, EntryReference<E, C>> resolved = HashMultimap.create(keySetSize, keySetSize == 0 ? 0 : multimap.size() / keySetSize);
for (Map.Entry<E, EntryReference<E, C>> entry : multimap.entries()) {
resolved.put(remap(index, entry.getKey()), remap(index, entry.getValue()));
}
return resolved;
}
private <E extends Entry<?>> E remap(JarIndex index, E entry) {
return index.getEntryResolver().resolveFirstEntry(entry, ResolutionStrategy.RESOLVE_CLOSEST);
}
private <E extends Entry<?>, C extends Entry<?>> EntryReference<E, C> remap(JarIndex index, EntryReference<E, C> reference) {
return index.getEntryResolver().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);
}
public Collection<EntryReference<ClassEntry, FieldDefEntry>> getFieldTypeReferencesToClass(ClassEntry entry) {
return fieldTypeReferences.get(entry);
}
public Collection<EntryReference<ClassEntry, MethodDefEntry>> getMethodTypeReferencesToClass(ClassEntry entry) {
return methodTypeReferences.get(entry);
}
}
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