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/*
* Copyright 2000-2012 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.daemon.impl.quickfix;
import com.intellij.codeInsight.FileModificationService;
import com.intellij.codeInsight.daemon.QuickFixBundle;
import com.intellij.codeInsight.intention.IntentionAction;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.*;
import com.intellij.psi.codeStyle.CodeStyleManager;
import com.intellij.psi.util.TypeConversionUtil;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* @author Danila Ponomarenko
*/
public class ReplaceWithListAccessFix implements IntentionAction {
private final PsiArrayAccessExpression myArrayAccessExpression;
public ReplaceWithListAccessFix(PsiArrayAccessExpression arrayAccessExpression) {
myArrayAccessExpression = arrayAccessExpression;
}
@NotNull
@Override
public String getText() {
return QuickFixBundle.message("replace.with.list.access.text");
}
@NotNull
@Override
public String getFamilyName() {
return getText();
}
@Override
public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) {
if (!myArrayAccessExpression.isValid()) return false;
if (!TypeConversionUtil.areTypesAssignmentCompatible(PsiType.INT, myArrayAccessExpression.getIndexExpression())) {
return false;
}
final PsiElement parent = myArrayAccessExpression.getParent();
if (parent instanceof PsiAssignmentExpression) {
final PsiExpression lExpression = ((PsiAssignmentExpression)parent).getLExpression();
if (lExpression.equals(myArrayAccessExpression) && !(parent.getParent() instanceof PsiExpressionStatement)) {
return false;
}
}
final PsiExpression arrayExpression = myArrayAccessExpression.getArrayExpression();
final PsiType type = arrayExpression.getType();
final PsiType listType = createUtilListType(project);
if (type == null || listType == null) return false;
return listType.isAssignableFrom(type);
}
@Nullable
private PsiType createUtilListType(@NotNull Project project) {
final JavaPsiFacade facade = JavaPsiFacade.getInstance(project);
final PsiClass listClass = JavaPsiFacade.getInstance(project).findClass(CommonClassNames.JAVA_UTIL_LIST, myArrayAccessExpression.getResolveScope());
if (listClass == null) return null;
final PsiElementFactory factory = facade.getElementFactory();
return factory.createType(listClass);
}
@Override
public void invoke(@NotNull Project project, Editor editor, PsiFile file) throws IncorrectOperationException {
if (!FileModificationService.getInstance().prepareFileForWrite(file)) return;
final PsiExpression arrayExpression = myArrayAccessExpression.getArrayExpression();
final PsiExpression indexExpression = myArrayAccessExpression.getIndexExpression();
if (indexExpression == null) return;
final PsiElementFactory factory = JavaPsiFacade.getInstance(project).getElementFactory();
final CodeStyleManager codeStyleManager = CodeStyleManager.getInstance(project);
final PsiElement parent = myArrayAccessExpression.getParent();
if (parent instanceof PsiAssignmentExpression) {
final PsiAssignmentExpression assignmentExpression = (PsiAssignmentExpression)parent;
final PsiExpression lExpression = assignmentExpression.getLExpression();
final PsiExpression rExpression = assignmentExpression.getRExpression();
if (lExpression.equals(myArrayAccessExpression) && parent.getParent() instanceof PsiExpressionStatement && rExpression != null) {
replaceWithSet(factory, codeStyleManager, arrayExpression, indexExpression, rExpression, assignmentExpression);
return;
}
}
replaceWithGet(factory, codeStyleManager, arrayExpression, indexExpression, myArrayAccessExpression);
}
@NotNull
private static PsiElement replaceWithGet(@NotNull PsiElementFactory factory,
@NotNull CodeStyleManager codeStyleManager,
@NotNull PsiExpression arrayExpression,
@NotNull PsiExpression indexExpression,
@NotNull PsiElement anchor) {
final PsiElement listAccess = factory.createExpressionFromText(
arrayExpression.getText() + ".get(" + indexExpression.getText() + ")",
anchor);
return anchor.replace(codeStyleManager.reformat(listAccess));
}
private static PsiElement replaceWithSet(@NotNull PsiElementFactory factory,
@NotNull CodeStyleManager codeStyleManager,
@NotNull PsiExpression arrayExpression,
@NotNull PsiExpression indexExpression,
@NotNull PsiExpression expression,
@NotNull PsiElement anchor) {
final PsiElement listAccess = factory.createExpressionFromText(
arrayExpression.getText() + ".set(" + indexExpression.getText() + "," + expression.getText() + ")",
anchor
);
return anchor.replace(codeStyleManager.reformat(listAccess));
}
@Override
public boolean startInWriteAction() {
return true;
}
}
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