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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 com.intellij.slicer;
import com.intellij.analysis.AnalysisScope;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.progress.ProgressIndicator;
import com.intellij.openapi.progress.ProgressManager;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiSubstitutor;
import com.intellij.usageView.UsageInfo;
import com.intellij.usages.UsageInfo2UsageAdapter;
import com.intellij.util.CommonProcessors;
import com.intellij.util.Processor;
import gnu.trove.TObjectHashingStrategy;
import org.jetbrains.annotations.NotNull;
/**
* @author cdr
*/
public class SliceUsage extends UsageInfo2UsageAdapter {
private final SliceUsage myParent;
public final SliceAnalysisParams params;
private final PsiSubstitutor mySubstitutor;
protected final int indexNesting; // 0 means bare expression 'x', 1 means x[?], 2 means x[?][?] etc
@NotNull protected final String syntheticField; // "" means no field, otherwise it's a name of fake field of container, e.g. "keys" for Map
public SliceUsage(@NotNull PsiElement element,
@NotNull SliceUsage parent,
@NotNull PsiSubstitutor substitutor,
int indexNesting,
@NotNull String syntheticField) {
super(new UsageInfo(element));
myParent = parent;
mySubstitutor = substitutor;
this.syntheticField = syntheticField;
params = parent.params;
assert params != null;
this.indexNesting = indexNesting;
}
// root usage
private SliceUsage(@NotNull PsiElement element, @NotNull SliceAnalysisParams params) {
super(new UsageInfo(element));
myParent = null;
this.params = params;
mySubstitutor = PsiSubstitutor.EMPTY;
indexNesting = 0;
syntheticField = "";
}
@NotNull
public static SliceUsage createRootUsage(@NotNull PsiElement element, @NotNull SliceAnalysisParams params) {
return new SliceUsage(element, params);
}
public void processChildren(@NotNull Processor<SliceUsage> processor) {
final PsiElement element = getElement();
ProgressIndicator indicator = ProgressManager.getInstance().getProgressIndicator();
indicator.checkCanceled();
final Processor<SliceUsage> uniqueProcessor =
new CommonProcessors.UniqueProcessor<SliceUsage>(processor, new TObjectHashingStrategy<SliceUsage>() {
@Override
public int computeHashCode(final SliceUsage object) {
return object.getUsageInfo().hashCode();
}
@Override
public boolean equals(final SliceUsage o1, final SliceUsage o2) {
return o1.getUsageInfo().equals(o2.getUsageInfo());
}
});
ApplicationManager.getApplication().runReadAction(new Runnable() {
@Override
public void run() {
if (params.dataFlowToThis) {
SliceUtil.processUsagesFlownDownTo(element, uniqueProcessor, SliceUsage.this, mySubstitutor, indexNesting,syntheticField);
}
else {
SliceForwardUtil.processUsagesFlownFromThe(element, uniqueProcessor, SliceUsage.this);
}
}
});
}
public SliceUsage getParent() {
return myParent;
}
@NotNull
public AnalysisScope getScope() {
return params.scope;
}
@NotNull
SliceUsage copy() {
PsiElement element = getUsageInfo().getElement();
return getParent() == null ? createRootUsage(element, params) : new SliceUsage(element, getParent(),mySubstitutor,indexNesting,syntheticField);
}
@NotNull
public PsiSubstitutor getSubstitutor() {
return mySubstitutor;
}
}
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