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/*
* Copyright 2000-2011 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.codeInsight.generation;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.psi.*;
import com.intellij.psi.codeStyle.JavaCodeStyleManager;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* @author peter
*/
public class PsiGenerationInfo<T extends PsiMember> extends GenerationInfoBase implements GenerationInfo {
private T myMember;
private final boolean myMergeIfExists;
private static final Logger LOG = Logger.getInstance("#" + PsiGenerationInfo.class.getName());
public PsiGenerationInfo(@NotNull final T member) {
myMember = member;
myMergeIfExists = true;
}
public PsiGenerationInfo(@NotNull T member, boolean mergeIfExists) {
myMember = member;
myMergeIfExists = mergeIfExists;
}
@Override
public final T getPsiMember() {
return myMember;
}
@Override
public void insert(@NotNull final PsiClass aClass, @Nullable PsiElement anchor, boolean before) throws IncorrectOperationException {
final PsiMember existingMember;
if (myMember instanceof PsiField) {
existingMember = aClass.findFieldByName(myMember.getName(), false);
}
else if (myMember instanceof PsiMethod) {
existingMember = aClass.findMethodBySignature((PsiMethod)myMember, false);
}
else {
existingMember = null;
}
if (existingMember == null || !myMergeIfExists) {
PsiElement newMember = GenerateMembersUtil.insert(aClass, myMember, anchor, before);
myMember = (T)JavaCodeStyleManager.getInstance(aClass.getProject()).shortenClassReferences(newMember);
LOG.assertTrue(myMember.isValid(), myMember);
}
else {
final PsiModifierList modifierList = myMember.getModifierList();
final PsiModifierList existingModifierList = existingMember.getModifierList();
if (modifierList != null && existingModifierList != null) {
final PsiAnnotation[] psiAnnotations = modifierList.getAnnotations();
PsiElement annoAnchor = existingModifierList.getAnnotations().length > 0 ? existingModifierList.getAnnotations()[0] : existingModifierList.getFirstChild();
if (psiAnnotations.length > 0) {
for (PsiAnnotation annotation : psiAnnotations) {
final PsiAnnotation existingAnno = existingModifierList.findAnnotation(annotation.getQualifiedName());
if (existingAnno != null){
annoAnchor = existingAnno.replace(annotation);
}
else {
existingModifierList.addBefore(annotation, annoAnchor);
}
}
}
}
myMember = (T)existingMember;
if (!myMember.isValid()) {
LOG.error("invalid member: " + myMember +
" existing member: " + existingMember.isValid() +
" self modified list: " + modifierList +
" existing modified list: " + existingModifierList);
}
}
}
}
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