1 files changed, 184 insertions, 0 deletions

diff --git a/src/cuchaz/enigma/convert/ClassMatching.java b/src/cuchaz/enigma/convert/ClassMatching.java
new file mode 100644
index 0000000..fea8438
--- /dev/null
+++ b/src/cuchaz/enigma/convert/ClassMatching.java
@@ -0,0 +1,184 @@
+/*******************************************************************************
+ * Copyright (c) 2014 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Public License v3.0
+ * which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/gpl.html
+ * 
+ * Contributors:
+ *     Jeff Martin - initial API and implementation
+ ******************************************************************************/
+package cuchaz.enigma.convert;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+
+import com.beust.jcommander.internal.Lists;
+import com.google.common.collect.ArrayListMultimap;
+import com.google.common.collect.BiMap;
+import com.google.common.collect.HashBiMap;
+import com.google.common.collect.Multimap;
+
+public class ClassMatching
+{
+        private Multimap<ClassIdentity,ClassIdentity> m_sourceClasses;
+        private Multimap<ClassIdentity,ClassIdentity> m_matchedDestClasses;
+        private List<ClassIdentity> m_unmatchedDestClasses;
+        
+        public ClassMatching( )
+        {
+                m_sourceClasses = ArrayListMultimap.create();
+                m_matchedDestClasses = ArrayListMultimap.create();
+                m_unmatchedDestClasses = Lists.newArrayList();
+        }
+
+        public void addSource( ClassIdentity c )
+        {
+                m_sourceClasses.put( c, c );
+        }
+        
+        public void matchDestClass( ClassIdentity destClass )
+        {
+                Collection<ClassIdentity> matchedSourceClasses = m_sourceClasses.get( destClass );
+                if( matchedSourceClasses.isEmpty() )
+                {
+                        // no match
+                        m_unmatchedDestClasses.add( destClass );
+                }
+                else
+                {
+                        // found a match
+                        m_matchedDestClasses.put( destClass, destClass );
+                        
+                        // DEBUG
+                        ClassIdentity sourceClass = matchedSourceClasses.iterator().next();
+                        assert( sourceClass.hashCode() == destClass.hashCode() );
+                        assert( sourceClass.equals( destClass ) );
+                }
+        }
+        
+        public void removeSource( ClassIdentity sourceClass )
+        {
+                m_sourceClasses.remove( sourceClass, sourceClass );
+        }
+        
+        public void removeDest( ClassIdentity destClass )
+        {
+                m_matchedDestClasses.remove( destClass, destClass );
+                m_unmatchedDestClasses.remove( destClass );
+        }
+        
+        public List<ClassIdentity> getSourceClasses( )
+        {
+                return new ArrayList<ClassIdentity>( m_sourceClasses.values() );
+        }
+        
+        public List<ClassIdentity> getDestClasses( )
+        {
+                List<ClassIdentity> classes = Lists.newArrayList();
+                classes.addAll( m_matchedDestClasses.values() );
+                classes.addAll( m_unmatchedDestClasses );
+                return classes;
+        }
+        
+        public BiMap<ClassIdentity,ClassIdentity> getUniqueMatches( )
+        {
+                BiMap<ClassIdentity,ClassIdentity> uniqueMatches = HashBiMap.create();
+                for( ClassIdentity sourceClass : m_sourceClasses.keySet() )
+                {
+                        Collection<ClassIdentity> matchedSourceClasses = m_sourceClasses.get( sourceClass );
+                        Collection<ClassIdentity> matchedDestClasses = m_matchedDestClasses.get( sourceClass );
+                        if( matchedSourceClasses.size() == 1 && matchedDestClasses.size() == 1 )
+                        {
+                                ClassIdentity matchedSourceClass = matchedSourceClasses.iterator().next();
+                                ClassIdentity matchedDestClass = matchedSourceClasses.iterator().next();
+                                uniqueMatches.put( matchedSourceClass, matchedDestClass );
+                        }
+                }
+                return uniqueMatches;
+        }
+        
+        public BiMap<List<ClassIdentity>,List<ClassIdentity>> getAmbiguousMatches( )
+        {
+                BiMap<List<ClassIdentity>,List<ClassIdentity>> ambiguousMatches = HashBiMap.create();
+                for( ClassIdentity sourceClass : m_sourceClasses.keySet() )
+                {
+                        Collection<ClassIdentity> matchedSourceClasses = m_sourceClasses.get( sourceClass );
+                        Collection<ClassIdentity> matchedDestClasses = m_matchedDestClasses.get( sourceClass );
+                        if( matchedSourceClasses.size() > 1 && matchedDestClasses.size() > 1 )
+                        {
+                                ambiguousMatches.put(
+                                        new ArrayList<ClassIdentity>( matchedSourceClasses ),
+                                        new ArrayList<ClassIdentity>( matchedDestClasses )
+                                );
+                        }
+                }
+                return ambiguousMatches;
+        }
+        
+        public int getNumAmbiguousSourceMatches( )
+        {
+                int num = 0;
+                for( Map.Entry<List<ClassIdentity>,List<ClassIdentity>> entry : getAmbiguousMatches().entrySet() )
+                {
+                        num += entry.getKey().size();
+                }
+                return num;
+        }
+        
+        public int getNumAmbiguousDestMatches( )
+        {
+                int num = 0;
+                for( Map.Entry<List<ClassIdentity>,List<ClassIdentity>> entry : getAmbiguousMatches().entrySet() )
+                {
+                        num += entry.getValue().size();
+                }
+                return num;
+        }
+        
+        public List<ClassIdentity> getUnmatchedSourceClasses( )
+        {
+                List<ClassIdentity> classes = Lists.newArrayList();
+                for( ClassIdentity sourceClass : getSourceClasses() )
+                {
+                        if( m_matchedDestClasses.get( sourceClass ).isEmpty() )
+                        {
+                                classes.add( sourceClass );
+                        }
+                }
+                return classes;
+        }
+        
+        public List<ClassIdentity> getUnmatchedDestClasses( )
+        {
+                return new ArrayList<ClassIdentity>( m_unmatchedDestClasses );
+        }
+        
+        @Override
+        public String toString( )
+        {
+                StringBuilder buf = new StringBuilder();
+                
+                buf.append( "Source classes: " );
+                buf.append( getSourceClasses().size() );
+                buf.append( "\n\tUnique: " );
+                buf.append( getUniqueMatches().size() );
+                buf.append( "\n\tAmbiguous: " );
+                buf.append( getNumAmbiguousSourceMatches() );
+                buf.append( "\n\tUnmatched: " );
+                buf.append( getUnmatchedSourceClasses().size() );
+                
+                buf.append( "\nDest classes: " );
+                buf.append( getDestClasses().size() );
+                buf.append( "\n\tUnique: " );
+                buf.append( getUniqueMatches().size() );
+                buf.append( "\n\tAmbiguous: " );
+                buf.append( getNumAmbiguousDestMatches() );
+                buf.append( "\n\tUnmatched: " );
+                buf.append( getUnmatchedDestClasses().size() );
+                
+                return buf.toString();
+        }
+}