/*
* Copyright 2000-2015 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;
import com.intellij.psi.impl.smartPointers.SmartPointerAnchorProvider;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* @author yole
*/
public class WrappedElementAnchor extends PsiAnchor {
private final SmartPointerAnchorProvider myAnchorProvider;
private final PsiAnchor myBaseAnchor;
public WrappedElementAnchor(@NotNull SmartPointerAnchorProvider provider, @NotNull PsiAnchor anchor) {
myAnchorProvider = provider;
myBaseAnchor = anchor;
}
@Nullable
@Override
public PsiElement retrieve() {
PsiElement baseElement = myBaseAnchor.retrieve();
return baseElement == null ? null : myAnchorProvider.restoreElement(baseElement);
}
@Override
public PsiFile getFile() {
PsiElement element = retrieve();
return element == null ? null : element.getContainingFile();
}
@Override
public int getStartOffset() {
PsiElement element = retrieve();
return element == null || element.getTextRange() == null ? -1 : element.getTextRange().getStartOffset();
}
@Override
public int getEndOffset() {
PsiElement element = retrieve();
return element == null || element.getTextRange() == null ? -1 : element.getTextRange().getEndOffset();
}
@Override
public String toString() {
return "WrappedElementAnchor(" + myBaseAnchor + "; provider=" + myAnchorProvider + ")";
}
}