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/*
* Copyright 2003-2005 Dave Griffith
*
* 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.siyeh.ipp.trivialif;
import com.intellij.psi.*;
import com.intellij.util.IncorrectOperationException;
import com.siyeh.ipp.base.Intention;
import com.siyeh.ipp.base.PsiElementPredicate;
import com.siyeh.ipp.psiutils.ConditionalUtils;
import com.siyeh.ipp.psiutils.ParenthesesUtils;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.NonNls;
public class MergeIfAndIntention extends Intention {
@NotNull
public PsiElementPredicate getElementPredicate() {
return new MergeIfAndPredicate();
}
public void processIntention(PsiElement element)
throws IncorrectOperationException {
final PsiJavaToken token =
(PsiJavaToken)element;
final PsiIfStatement parentStatement =
(PsiIfStatement)token.getParent();
if (parentStatement == null) {
return;
}
final PsiStatement parentThenBranch = parentStatement.getThenBranch();
final PsiIfStatement childStatement =
(PsiIfStatement)ConditionalUtils.stripBraces(parentThenBranch);
final PsiExpression childCondition = childStatement.getCondition();
if (childCondition == null) {
return;
}
final String childConditionText;
if (ParenthesesUtils.getPrecedence(childCondition)
> ParenthesesUtils.AND_PRECEDENCE) {
childConditionText = '(' + childCondition.getText() + ')';
}
else {
childConditionText = childCondition.getText();
}
final PsiExpression parentCondition = parentStatement.getCondition();
if (parentCondition == null) {
return;
}
final String parentConditionText;
if (ParenthesesUtils.getPrecedence(parentCondition)
> ParenthesesUtils.AND_PRECEDENCE) {
parentConditionText = '(' + parentCondition.getText() + ')';
}
else {
parentConditionText = parentCondition.getText();
}
final PsiStatement childThenBranch = childStatement.getThenBranch();
if (childThenBranch == null) {
return;
}
@NonNls final String statement = "if(" + parentConditionText + "&&" +
childConditionText + ')' + childThenBranch.getText();
replaceStatement(statement, parentStatement);
}
}
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