| /* |
| * 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.jetbrains.python.codeInsight; |
| |
| import com.intellij.codeInsight.TargetElementEvaluator; |
| import com.intellij.codeInsight.TargetElementUtilBase; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiReference; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.jetbrains.python.codeInsight.controlflow.ScopeOwner; |
| import com.jetbrains.python.psi.PyParameter; |
| import com.jetbrains.python.psi.PyQualifiedExpression; |
| import com.jetbrains.python.psi.PyReferenceExpression; |
| import com.jetbrains.python.psi.PyTargetExpression; |
| import com.jetbrains.python.psi.resolve.PyResolveContext; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * @author yole |
| */ |
| public class PyTargetElementEvaluator implements TargetElementEvaluator { |
| @Override |
| public boolean includeSelfInGotoImplementation(@NotNull PsiElement element) { |
| return false; |
| } |
| |
| @Nullable |
| @Override |
| public PsiElement getElementByReference(@NotNull PsiReference ref, int flags) { |
| if ((flags & TargetElementUtilBase.ELEMENT_NAME_ACCEPTED) == 0){ |
| return null; |
| } |
| final PsiElement element = ref.getElement(); |
| PsiElement result = ref.resolve(); |
| Set<PsiElement> visited = new HashSet<PsiElement>(); |
| visited.add(result); |
| while (result instanceof PyReferenceExpression || result instanceof PyTargetExpression) { |
| PsiElement nextResult = ((PyQualifiedExpression) result).getReference(PyResolveContext.noImplicits()).resolve(); |
| if (nextResult != null && !visited.contains(nextResult) && |
| PsiTreeUtil.getParentOfType(element, ScopeOwner.class) == PsiTreeUtil.getParentOfType(result, ScopeOwner.class) && |
| (nextResult instanceof PyReferenceExpression || nextResult instanceof PyTargetExpression || nextResult instanceof PyParameter)) { |
| visited.add(nextResult); |
| result = nextResult; |
| } |
| else { |
| break; |
| } |
| } |
| return result; |
| } |
| } |