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/*
* 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.
*/
/*
* User: anna
* Date: 21-Mar-2008
*/
package com.intellij.codeInsight.daemon.impl.quickfix;
import com.intellij.codeInsight.FileModificationService;
import com.intellij.codeInsight.TargetElementUtilBase;
import com.intellij.codeInsight.intention.PsiElementBaseIntentionAction;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.*;
import com.intellij.psi.codeStyle.JavaCodeStyleManager;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.psi.util.PsiUtil;
import com.intellij.psi.util.TypeConversionUtil;
import com.intellij.util.ArrayUtil;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Collection;
public class SurroundWithArrayFix extends PsiElementBaseIntentionAction {
private final PsiCall myMethodCall;
public SurroundWithArrayFix(final PsiCall methodCall) {
myMethodCall = methodCall;
}
@Override
@NotNull
public String getText() {
return "Surround with array initialization";
}
@Override
@NotNull
public String getFamilyName() {
return getText();
}
@Override
public boolean isAvailable(@NotNull final Project project, final Editor editor, @NotNull final PsiElement element) {
return getExpression(element) != null;
}
@Nullable
protected PsiExpression getExpression(PsiElement element) {
if (myMethodCall == null || !myMethodCall.isValid()) return null;
final PsiElement method = myMethodCall.resolveMethod();
if (method != null) {
final PsiMethod psiMethod = (PsiMethod)method;
return checkMethod(element, psiMethod);
} else if (myMethodCall instanceof PsiMethodCallExpression){
final Collection<PsiElement> psiElements = TargetElementUtilBase.getInstance()
.getTargetCandidates(((PsiMethodCallExpression)myMethodCall).getMethodExpression());
for (PsiElement psiElement : psiElements) {
if (psiElement instanceof PsiMethod) {
final PsiExpression expression = checkMethod(element, (PsiMethod)psiElement);
if (expression != null) return expression;
}
}
}
return null;
}
@Nullable
private PsiExpression checkMethod(final PsiElement element, final PsiMethod psiMethod) {
final PsiParameter[] psiParameters = psiMethod.getParameterList().getParameters();
final PsiExpressionList argumentList = myMethodCall.getArgumentList();
int idx = 0;
for (PsiExpression expression : argumentList.getExpressions()) {
if (element != null && PsiTreeUtil.isAncestor(expression, element, false)) {
if (psiParameters.length > idx) {
final PsiType paramType = psiParameters[idx].getType();
if (paramType instanceof PsiArrayType) {
final PsiType expressionType = expression.getType();
if (expressionType != null) {
final PsiType componentType = ((PsiArrayType)paramType).getComponentType();
if (expressionType.isAssignableFrom(componentType)) {
return expression;
}
final PsiClass psiClass = PsiUtil.resolveClassInType(componentType);
if (ArrayUtil.find(psiMethod.getTypeParameters(), psiClass) != -1) {
for (PsiClassType superType : psiClass.getSuperTypes()) {
if (TypeConversionUtil.isAssignable(superType, expressionType)) return expression;
}
}
}
}
}
}
idx++;
}
return null;
}
@Override
public void invoke(@NotNull Project project, Editor editor, @NotNull PsiElement element) throws IncorrectOperationException {
if (!FileModificationService.getInstance().preparePsiElementForWrite(element)) return;
final PsiElementFactory elementFactory = JavaPsiFacade.getInstance(project).getElementFactory();
final PsiExpression expression = getExpression(element);
assert expression != null;
final PsiExpression toReplace = elementFactory.createExpressionFromText(getArrayCreation(expression), element);
JavaCodeStyleManager.getInstance(project).shortenClassReferences(expression.replace(toReplace));
}
@NonNls
private static String getArrayCreation(@NotNull PsiExpression expression) {
final PsiType expressionType = expression.getType();
assert expressionType != null;
return "new " + expressionType.getCanonicalText() + "[]{" + expression.getText()+ "}";
}
}
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