| /* |
| * Copyright 2000-2009 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.psi.impl.smartPointers; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.impl.source.PsiFileWithStubSupport; |
| import com.intellij.psi.stubs.IStubElementType; |
| import com.intellij.psi.stubs.StubTree; |
| import com.intellij.psi.util.PsiUtilCore; |
| import com.intellij.psi.xml.XmlTag; |
| import com.intellij.xml.util.XmlTagUtil; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| public class AnchorElementInfoFactory implements SmartPointerElementInfoFactory { |
| @Override |
| @Nullable |
| public SmartPointerElementInfo createElementInfo(@NotNull PsiElement element) { |
| PsiFile containingFile = element.getContainingFile(); |
| if (element instanceof StubBasedPsiElement && containingFile instanceof PsiFileWithStubSupport) { |
| PsiFileWithStubSupport stubFile = (PsiFileWithStubSupport)containingFile; |
| StubTree stubTree = stubFile.getStubTree(); |
| if (stubTree != null) { |
| // use stubs when tree is not loaded |
| StubBasedPsiElement stubPsi = (StubBasedPsiElement)element; |
| int stubId = PsiAnchor.calcStubIndex(stubPsi); |
| IStubElementType myStubElementType = stubPsi.getElementType(); |
| if (stubId != -1) { |
| return new AnchorElementInfo(element, stubFile, stubId, myStubElementType); |
| } |
| } |
| } |
| |
| PsiElement anchor = getAnchor(element); |
| if (anchor != null) { |
| return new AnchorElementInfo(anchor, containingFile); |
| } |
| return null; |
| } |
| |
| @Nullable |
| static PsiElement getAnchor(PsiElement element) { |
| PsiUtilCore.ensureValid(element); |
| PsiElement anchor = null; |
| if (element instanceof PsiClass) { |
| if (element instanceof PsiAnonymousClass) { |
| anchor = ((PsiAnonymousClass)element).getBaseClassReference().getReferenceNameElement(); |
| } |
| else { |
| anchor = ((PsiClass)element).getNameIdentifier(); |
| } |
| } |
| else if (element instanceof PsiMethod) { |
| anchor = ((PsiMethod)element).getNameIdentifier(); |
| } |
| else if (element instanceof PsiVariable) { |
| anchor = ((PsiVariable)element).getNameIdentifier(); |
| } |
| else if (element instanceof XmlTag) { |
| anchor = XmlTagUtil.getStartTagNameElement((XmlTag)element); |
| } |
| if (anchor != null && (!anchor.isPhysical() /*|| anchor.getTextRange()==null*/)) return null; |
| return anchor; |
| } |
| } |