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/*
* Copyright 2000-2013 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.jps.classFilesIndex.indexer.impl;
import com.intellij.util.io.DataExternalizer;
import com.intellij.util.io.EnumeratorIntegerDescriptor;
import com.intellij.util.io.EnumeratorStringDescriptor;
import com.intellij.util.io.KeyDescriptor;
import gnu.trove.TObjectIntHashMap;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.asm4.*;
import org.jetbrains.jps.builders.java.dependencyView.Mappings;
import org.jetbrains.jps.classFilesIndex.AsmUtil;
import org.jetbrains.jps.classFilesIndex.TObjectIntHashMapExternalizer;
import org.jetbrains.jps.classFilesIndex.indexer.api.ClassFileIndexer;
import java.util.HashMap;
import java.util.Map;
/**
* @author Dmitry Batkovich
*/
public class MethodsUsageIndexer extends ClassFileIndexer<Integer, TObjectIntHashMap<EnumeratedMethodIncompleteSignature>> {
public static final String METHODS_USAGE_INDEX_CANONICAL_NAME = "MethodsUsageIndex";
public MethodsUsageIndexer() {
super(METHODS_USAGE_INDEX_CANONICAL_NAME);
}
@NotNull
@Override
public Map<Integer, TObjectIntHashMap<EnumeratedMethodIncompleteSignature>> map(final ClassReader inputData, final Mappings mappings) {
final Map<Integer, TObjectIntHashMap<EnumeratedMethodIncompleteSignature>> map =
new HashMap<Integer, TObjectIntHashMap<EnumeratedMethodIncompleteSignature>>();
final MethodVisitor methodVisitor = new MethodVisitor(Opcodes.ASM4) {
@Override
public void visitMethodInsn(final int opcode, final String owner, final String name, final String desc) {
final Type returnType = Type.getReturnType(desc);
if (AsmUtil.isPrimitiveOrArrayOfPrimitives(returnType.getDescriptor()) || "<init>".equals(name)) {
return;
}
final boolean isStatic = opcode == Opcodes.INVOKESTATIC;
final String returnClassName = returnType.getInternalName();
if (!owner.equals(returnClassName) || isStatic) {
final EnumeratedMethodIncompleteSignature mi =
new EnumeratedMethodIncompleteSignature(mappings.getName(owner), mappings.getName(name), isStatic);
final int enumeratedClassName = mappings.getName(returnClassName);
TObjectIntHashMap<EnumeratedMethodIncompleteSignature> occurrences = map.get(enumeratedClassName);
if (occurrences == null) {
occurrences = new TObjectIntHashMap<EnumeratedMethodIncompleteSignature>();
map.put(enumeratedClassName, occurrences);
}
if (!occurrences.increment(mi)) {
occurrences.put(mi, 1);
}
}
}
};
inputData.accept(new ClassVisitor(Opcodes.ASM4) {
@Override
public MethodVisitor visitMethod(final int access,
final String name,
final String desc,
final String signature,
final String[] exceptions) {
return methodVisitor;
}
}, ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
return map;
}
@Override
public KeyDescriptor<Integer> getKeyDescriptor() {
return EnumeratorIntegerDescriptor.INSTANCE;
}
@Override
public DataExternalizer<TObjectIntHashMap<EnumeratedMethodIncompleteSignature>> getDataExternalizer() {
return new TObjectIntHashMapExternalizer<EnumeratedMethodIncompleteSignature>(EnumeratedMethodIncompleteSignature.createDataExternalizer());
}
}
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