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/*
* Copyright 2000-2014 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 com.intellij.codeInspection.bytecodeAnalysis;
import com.intellij.ide.highlighter.JavaClassFileType;
import com.intellij.openapi.application.Application;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.VirtualFileWithId;
import com.intellij.util.SystemProperties;
import com.intellij.util.indexing.*;
import com.intellij.util.io.DataExternalizer;
import com.intellij.util.io.DataInputOutputUtil;
import com.intellij.util.io.EnumeratorIntegerDescriptor;
import com.intellij.util.io.KeyDescriptor;
import org.jetbrains.annotations.NotNull;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
/**
* @author lambdamix
*/
public class BytecodeAnalysisIndex extends FileBasedIndexExtension<Integer, Collection<IntIdEquation>> {
public static final ID<Integer, Collection<IntIdEquation>> NAME = ID.create("bytecodeAnalysis");
private final EquationExternalizer myExternalizer = new EquationExternalizer();
private static final DataIndexer<Integer, Collection<IntIdEquation>, FileContent> INDEXER =
new ClassDataIndexer(BytecodeAnalysisConverter.getInstance());
private static final int ourInternalVersion = 2;
private static boolean ourEnabled = SystemProperties.getBooleanProperty("idea.enable.bytecode.contract.inference", isEnabledByDefault());
private static boolean isEnabledByDefault() {
Application application = ApplicationManager.getApplication();
return application.isInternal() || application.isUnitTestMode();
}
public static int indexKey(VirtualFile file, boolean parameters) {
return (file instanceof VirtualFileWithId ? ((VirtualFileWithId)file).getId() * 2 : -2) + (parameters ? 1 : 0);
}
@NotNull
@Override
public ID<Integer, Collection<IntIdEquation>> getName() {
return NAME;
}
@NotNull
@Override
public DataIndexer<Integer, Collection<IntIdEquation>, FileContent> getIndexer() {
return INDEXER;
}
@NotNull
@Override
public KeyDescriptor<Integer> getKeyDescriptor() {
return EnumeratorIntegerDescriptor.INSTANCE;
}
@NotNull
@Override
public DataExternalizer<Collection<IntIdEquation>> getValueExternalizer() {
return myExternalizer;
}
@NotNull
@Override
public FileBasedIndex.InputFilter getInputFilter() {
return new DefaultFileTypeSpecificInputFilter(JavaClassFileType.INSTANCE) {
@Override
public boolean acceptInput(@NotNull VirtualFile file) {
return ourEnabled && super.acceptInput(file);
}
};
}
@Override
public boolean dependsOnFileContent() {
return true;
}
@Override
public int getVersion() {
return ourInternalVersion + BytecodeAnalysisConverter.getInstance().getVersion() + (ourEnabled ? 0xFF : 0);
}
public static class EquationExternalizer implements DataExternalizer<Collection<IntIdEquation>> {
@Override
public void save(@NotNull DataOutput out, Collection<IntIdEquation> equations) throws IOException {
DataInputOutputUtil.writeINT(out, equations.size());
for (IntIdEquation equation : equations) {
out.writeInt(equation.id);
IntIdResult rhs = equation.rhs;
if (rhs instanceof IntIdFinal) {
IntIdFinal finalResult = (IntIdFinal)rhs;
out.writeBoolean(true); // final flag
DataInputOutputUtil.writeINT(out, finalResult.value.ordinal());
} else {
IntIdPending pendResult = (IntIdPending)rhs;
out.writeBoolean(false); // pending flag
DataInputOutputUtil.writeINT(out, pendResult.delta.length);
for (IntIdComponent component : pendResult.delta) {
DataInputOutputUtil.writeINT(out, component.value.ordinal());
int[] ids = component.ids;
DataInputOutputUtil.writeINT(out, ids.length);
for (int id : ids) {
out.writeInt(id);
}
}
}
}
}
@Override
public Collection<IntIdEquation> read(@NotNull DataInput in) throws IOException {
int size = DataInputOutputUtil.readINT(in);
ArrayList<IntIdEquation> result = new ArrayList<IntIdEquation>(size);
for (int x = 0; x < size; x++) {
int equationId = in.readInt();
boolean isFinal = in.readBoolean(); // flag
if (isFinal) {
int ordinal = DataInputOutputUtil.readINT(in);
Value value = Value.values()[ordinal];
result.add(new IntIdEquation(equationId, new IntIdFinal(value)));
} else {
int sumLength = DataInputOutputUtil.readINT(in);
IntIdComponent[] components = new IntIdComponent[sumLength];
for (int i = 0; i < sumLength; i++) {
int ordinal = DataInputOutputUtil.readINT(in);
Value value = Value.values()[ordinal];
int componentSize = DataInputOutputUtil.readINT(in);
int[] ids = new int[componentSize];
for (int j = 0; j < componentSize; j++) {
ids[j] = in.readInt();
}
components[i] = new IntIdComponent(value, ids);
}
result.add(new IntIdEquation(equationId, new IntIdPending(components)));
}
}
return result;
}
}
}
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