| /* |
| * 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. |
| */ |
| |
| /* |
| * @author max |
| */ |
| package com.intellij.psi; |
| |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.Segment; |
| import com.intellij.openapi.vfs.VirtualFile; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class IdentitySmartPointer<T extends PsiElement> implements SmartPsiElementPointer<T> { |
| private final T myElement; |
| private final PsiFile myFile; |
| |
| public IdentitySmartPointer(@NotNull T element, @NotNull PsiFile file) { |
| myElement = element; |
| myFile = file; |
| } |
| |
| public IdentitySmartPointer(@NotNull T element) { |
| this(element, element.getContainingFile()); |
| } |
| |
| @Override |
| @NotNull |
| public Project getProject() { |
| return myFile.getProject(); |
| } |
| |
| @Override |
| public VirtualFile getVirtualFile() { |
| return myFile.getVirtualFile(); |
| } |
| |
| @Override |
| public T getElement() { |
| T element = myElement; |
| return element.isValid() ? element : null; |
| } |
| |
| public int hashCode() { |
| final T elt = getElement(); |
| return elt == null ? 0 : elt.hashCode(); |
| } |
| |
| public boolean equals(Object obj) { |
| return obj instanceof SmartPsiElementPointer |
| && SmartPointerManager.getInstance(getProject()).pointToTheSameElement(this, (SmartPsiElementPointer)obj); |
| } |
| |
| @Override |
| public PsiFile getContainingFile() { |
| return myFile; |
| } |
| |
| @Override |
| public Segment getRange() { |
| return myElement.getTextRange(); |
| } |
| } |