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/*
* Copyright 2003-2014 Dave Griffith, Bas Leijdekkers
*
* 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.equality;
import com.intellij.psi.*;
import com.intellij.psi.tree.IElementType;
import com.siyeh.IntentionPowerPackBundle;
import com.siyeh.ig.PsiReplacementUtil;
import com.siyeh.ig.psiutils.ParenthesesUtils;
import com.siyeh.ipp.base.MutablyNamedIntention;
import com.siyeh.ipp.base.PsiElementPredicate;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
public class ReplaceEqualityWithEqualsIntention extends MutablyNamedIntention {
@Override
protected String getTextForElement(PsiElement element) {
final PsiBinaryExpression binaryExpression = (PsiBinaryExpression)element;
final IElementType tokenType = binaryExpression.getOperationTokenType();
if (JavaTokenType.NE.equals(tokenType)) {
return IntentionPowerPackBundle.message("replace.equality.with.not.equals.intention.name");
}
else {
return IntentionPowerPackBundle.message("replace.equality.with.equals.intention.name");
}
}
@NotNull
public PsiElementPredicate getElementPredicate() {
return new ObjectEqualityPredicate();
}
public void processIntention(PsiElement element) {
final PsiBinaryExpression exp = (PsiBinaryExpression)element;
final PsiExpression lhs = exp.getLOperand();
final PsiExpression rhs = exp.getROperand();
if (rhs == null) {
return;
}
final PsiExpression strippedLhs =
ParenthesesUtils.stripParentheses(lhs);
if (strippedLhs == null) {
return;
}
final PsiExpression strippedRhs =
ParenthesesUtils.stripParentheses(rhs);
if (strippedRhs == null) {
return;
}
final IElementType tokenType = exp.getOperationTokenType();
@NonNls final String expString;
if (tokenType.equals(JavaTokenType.EQEQ)) {
if (ParenthesesUtils.getPrecedence(strippedLhs) >
ParenthesesUtils.METHOD_CALL_PRECEDENCE) {
expString = '(' + strippedLhs.getText() + ").equals(" +
strippedRhs.getText() + ')';
}
else {
expString = strippedLhs.getText() + ".equals(" +
strippedRhs.getText() + ')';
}
}
else {
if (ParenthesesUtils.getPrecedence(strippedLhs) >
ParenthesesUtils.METHOD_CALL_PRECEDENCE) {
expString = "!(" + strippedLhs.getText() + ").equals(" +
strippedRhs.getText() + ')';
}
else {
expString = '!' + strippedLhs.getText() + ".equals(" +
strippedRhs.getText() + ')';
}
}
PsiReplacementUtil.replaceExpression(exp, expString);
}
}
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