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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.find.impl;
import com.intellij.find.FindManager;
import com.intellij.find.FindModel;
import com.intellij.find.FindResult;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.util.Key;
import com.intellij.openapi.util.Segment;
import com.intellij.openapi.util.TextRange;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiFile;
import com.intellij.psi.SmartPointerManager;
import com.intellij.psi.SmartPsiFileRange;
import com.intellij.usageView.UsageInfo;
import org.jetbrains.annotations.NotNull;
public class FindResultUsageInfo extends UsageInfo {
private final FindManager myFindManager;
private final FindModel myFindModel;
private SmartPsiFileRange myAnchor;
private Boolean myCachedResult;
private long myTimestamp = 0;
private static final Key<Long> ourDocumentTimestampKey = Key.create("com.intellij.find.impl.FindResultUsageInfo.documentTimestamp");
@Override
public boolean isValid() {
if (!super.isValid()) return false;
Document document = PsiDocumentManager.getInstance(getProject()).getDocument(getPsiFile());
if (document == null) {
myCachedResult = null;
return false;
}
Boolean cachedResult = myCachedResult;
if (document.getModificationStamp() == myTimestamp && cachedResult != null) {
return cachedResult;
}
myTimestamp = document.getModificationStamp();
Segment segment = getSegment();
if (segment == null) {
myCachedResult = false;
return false;
}
VirtualFile file = getPsiFile().getVirtualFile();
Segment searchOffset;
if (myAnchor != null) {
searchOffset = myAnchor.getRange();
if (searchOffset == null) {
myCachedResult = false;
return false;
}
}
else {
searchOffset = segment;
}
int offset = searchOffset.getStartOffset();
Long data = myFindModel.getUserData(ourDocumentTimestampKey);
if (data == null || data != myTimestamp) {
data = myTimestamp;
myFindModel.putUserData(FindManagerImpl.ourCommentsLiteralsSearchDataKey, null);
}
myFindModel.putUserData(ourDocumentTimestampKey, data);
FindResult result;
do {
result = myFindManager.findString(document.getCharsSequence(), offset, myFindModel, file);
offset = result.getEndOffset() == offset ? offset + 1 : result.getEndOffset();
if (!result.isStringFound()) {
myCachedResult = false;
return false;
}
} while (result.getStartOffset() < segment.getStartOffset());
boolean ret = segment.getStartOffset() == result.getStartOffset() && segment.getEndOffset() == result.getEndOffset();
myCachedResult = ret;
return ret;
}
private PsiFile getPsiFile() {
return (PsiFile)getElement();
}
public FindResultUsageInfo(@NotNull FindManager finder, @NotNull PsiFile file, int offset, @NotNull FindModel findModel, @NotNull FindResult result) {
super(file, result.getStartOffset(), result.getEndOffset());
myFindManager = finder;
myFindModel = findModel;
assert result.isStringFound();
if (myFindModel.isRegularExpressions() || myFindModel.isInCommentsOnly() || myFindModel.isInStringLiteralsOnly()) {
myAnchor = SmartPointerManager.getInstance(getProject()).createSmartPsiFileRangePointer(file, TextRange.from(offset, 0));
}
}
}
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