| /* |
| * Copyright 2003-2013 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.ig.controlflow; |
| |
| import com.intellij.codeInspection.ProblemDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.PsiConditionalExpression; |
| import com.intellij.psi.PsiExpression; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.InspectionGadgetsFix; |
| import com.siyeh.ig.PsiReplacementUtil; |
| import com.siyeh.ig.psiutils.EquivalenceChecker; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class ConditionalExpressionWithIdenticalBranchesInspection extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("conditional.expression.with.identical.branches.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| protected String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message("conditional.expression.with.identical.branches.problem.descriptor"); |
| } |
| |
| @Override |
| public InspectionGadgetsFix buildFix(Object... infos) { |
| return new CollapseConditional(); |
| } |
| |
| private static class CollapseConditional extends InspectionGadgetsFix { |
| |
| @Override |
| @NotNull |
| public String getName() { |
| return InspectionGadgetsBundle.message("conditional.expression.with.identical.branches.collapse.quickfix"); |
| } |
| |
| @Override |
| @NotNull |
| public String getFamilyName() { |
| return getName(); |
| } |
| |
| @Override |
| public void doFix(Project project, ProblemDescriptor descriptor) { |
| final PsiConditionalExpression expression = (PsiConditionalExpression)descriptor.getPsiElement(); |
| final PsiExpression thenExpression = expression.getThenExpression(); |
| assert thenExpression != null; |
| final String bodyText = thenExpression.getText(); |
| PsiReplacementUtil.replaceExpression(expression, bodyText); |
| } |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new ConditionalExpressionWithIdenticalBranchesVisitor(); |
| } |
| |
| private static class ConditionalExpressionWithIdenticalBranchesVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitConditionalExpression(PsiConditionalExpression expression) { |
| super.visitConditionalExpression(expression); |
| final PsiExpression thenExpression = expression.getThenExpression(); |
| final PsiExpression elseExpression = expression.getElseExpression(); |
| if (thenExpression != null && EquivalenceChecker.expressionsAreEquivalent(thenExpression, elseExpression)) { |
| registerError(expression); |
| } |
| } |
| } |
| } |