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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.util.SystemProperties;
import com.intellij.util.indexing.*;
import com.intellij.util.io.DataExternalizer;
import com.intellij.util.io.DataInputOutputUtil;
import com.intellij.util.io.DifferentSerializableBytesImplyNonEqualityPolicy;
import com.intellij.util.io.KeyDescriptor;
import org.jetbrains.annotations.NotNull;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
/**
* @author lambdamix
*/
public class BytecodeAnalysisIndex extends FileBasedIndexExtension<Long, IdEquation> {
public static final ID<Long, IdEquation> NAME = ID.create("bytecodeAnalysis");
private final EquationExternalizer myExternalizer = new EquationExternalizer();
private static final DataIndexer<Long, IdEquation, FileContent> INDEXER =
new ClassDataIndexer(BytecodeAnalysisConverter.getInstance());
private static final SmartLongKeyDescriptor KEY_DESCRIPTOR = new SmartLongKeyDescriptor();
private static final int ourInternalVersion = 3;
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();
}
@NotNull
@Override
public ID<Long, IdEquation> getName() {
return NAME;
}
@NotNull
@Override
public DataIndexer<Long, IdEquation, FileContent> getIndexer() {
return INDEXER;
}
@NotNull
@Override
public KeyDescriptor<Long> getKeyDescriptor() {
return KEY_DESCRIPTOR;
}
@NotNull
@Override
public DataExternalizer<IdEquation> 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<IdEquation>, DifferentSerializableBytesImplyNonEqualityPolicy {
@Override
public void save(@NotNull DataOutput out, IdEquation equation) throws IOException {
long id = equation.id;
int sign = id > 0 ? 1 : -1;
id = Math.abs(id);
int primaryId = (int)(id / BytecodeAnalysisConverter.SHIFT);
int secondaryId = (int)(id % BytecodeAnalysisConverter.SHIFT);
out.writeInt(sign * primaryId);
DataInputOutputUtil.writeINT(out, secondaryId);
IdResult rhs = equation.rhs;
if (rhs instanceof IdFinal) {
IdFinal finalResult = (IdFinal)rhs;
out.writeBoolean(true); // final flag
DataInputOutputUtil.writeINT(out, finalResult.value.ordinal());
} else {
IdPending pendResult = (IdPending)rhs;
out.writeBoolean(false); // pending flag
DataInputOutputUtil.writeINT(out, pendResult.delta.length);
for (IntIdComponent component : pendResult.delta) {
DataInputOutputUtil.writeINT(out, component.value.ordinal());
long[] ids = component.ids;
DataInputOutputUtil.writeINT(out, ids.length);
for (long id1 : ids) {
sign = id1 > 0 ? 1 : -1;
id = Math.abs(id1);
primaryId = (int)(id / BytecodeAnalysisConverter.SHIFT);
secondaryId = (int)(id % BytecodeAnalysisConverter.SHIFT);
out.writeInt(sign * primaryId);
DataInputOutputUtil.writeINT(out, secondaryId);
}
}
}
}
@Override
public IdEquation read(@NotNull DataInput in) throws IOException {
long primaryId = in.readInt();
int sign = primaryId > 0 ? 1 : -1;
primaryId = Math.abs(primaryId);
int secondaryId = DataInputOutputUtil.readINT(in);
long equationId = sign * (primaryId * BytecodeAnalysisConverter.SHIFT + secondaryId);
boolean isFinal = in.readBoolean(); // flag
if (isFinal) {
int ordinal = DataInputOutputUtil.readINT(in);
Value value = Value.values()[ordinal];
return new IdEquation(equationId, new IdFinal(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);
long[] ids = new long[componentSize];
for (int j = 0; j < componentSize; j++) {
primaryId = in.readInt();
sign = primaryId > 0 ? 1 : -1;
primaryId = Math.abs(primaryId);
secondaryId = DataInputOutputUtil.readINT(in);
long id = sign * (primaryId * BytecodeAnalysisConverter.SHIFT + secondaryId);
ids[j] = id;
}
components[i] = new IntIdComponent(value, ids);
}
return new IdEquation(equationId, new IdPending(components));
}
}
}
private static class SmartLongKeyDescriptor implements KeyDescriptor<Long>, DifferentSerializableBytesImplyNonEqualityPolicy {
@Override
public void save(@NotNull DataOutput out, Long value) throws IOException {
long id = value.longValue();
int sign = id > 0 ? 1 : -1;
id = Math.abs(id);
int primaryId = (int)(id / BytecodeAnalysisConverter.SHIFT);
int secondaryId = (int)(id % BytecodeAnalysisConverter.SHIFT);
out.writeInt(primaryId * sign);
DataInputOutputUtil.writeINT(out, secondaryId);
}
@Override
public Long read(@NotNull DataInput in) throws IOException {
long primaryId = in.readInt();
int sign = primaryId > 0 ? 1 : -1;
primaryId = Math.abs(primaryId);
int secondaryId = DataInputOutputUtil.readINT(in);
return sign * (primaryId * BytecodeAnalysisConverter.SHIFT + secondaryId);
}
@Override
public int getHashCode(Long value) {
return value.hashCode();
}
@Override
public boolean isEqual(Long val1, Long val2) {
return val1.longValue() == val2.longValue();
}
}
}
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