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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.jetbrains.python.codeInsight.highlighting;
import com.intellij.codeInsight.TargetElementUtilBase;
import com.intellij.codeInsight.highlighting.HighlightUsagesHandlerBase;
import com.intellij.codeInsight.highlighting.HighlightUsagesHandlerFactory;
import com.intellij.openapi.editor.Editor;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.util.PsiTreeUtil;
import com.jetbrains.python.psi.PyExpression;
import com.jetbrains.python.psi.PyReturnStatement;
/**
* @author oleg
*/
public class PyHighlightExitPointsHandlerFactory implements HighlightUsagesHandlerFactory {
public HighlightUsagesHandlerBase createHighlightUsagesHandler(final Editor editor, final PsiFile file) {
int offset = TargetElementUtilBase.adjustOffset(file, editor.getDocument(), editor.getCaretModel().getOffset());
PsiElement target = file.findElementAt(offset);
if (target != null) {
final PyReturnStatement returnStatement = PsiTreeUtil.getParentOfType(target, PyReturnStatement.class);
if (returnStatement != null) {
final PyExpression returnExpr = returnStatement.getExpression();
if (returnExpr == null || !PsiTreeUtil.isAncestor(returnExpr, target, false)) {
return new PyHighlightExitPointsHandler(editor, file, target);
}
}
}
return null;
}
}
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