| /* |
| * Copyright 2000-2014 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 org.jetbrains.plugins.groovy.codeInspection.control; |
| |
| import com.intellij.codeInspection.ProblemDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.plugins.groovy.codeInspection.BaseInspection; |
| import org.jetbrains.plugins.groovy.codeInspection.BaseInspectionVisitor; |
| import org.jetbrains.plugins.groovy.codeInspection.GroovyFix; |
| import org.jetbrains.plugins.groovy.codeInspection.utils.EquivalenceChecker; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrIfStatement; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrStatement; |
| |
| public class GroovyIfStatementWithIdenticalBranchesInspection extends BaseInspection { |
| @Override |
| public boolean isEnabledByDefault() { |
| return true; |
| } |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return "If statement with identical branches"; |
| } |
| |
| @Override |
| @NotNull |
| public String getGroupDisplayName() { |
| return CONTROL_FLOW; |
| } |
| |
| @Override |
| public String buildErrorString(Object... args) { |
| return "'#ref' statement with identical branches #loc"; |
| } |
| |
| @Override |
| public GroovyFix buildFix(@NotNull PsiElement location) { |
| return new CollapseIfFix(); |
| } |
| |
| private static class CollapseIfFix extends GroovyFix { |
| |
| @Override |
| @NotNull |
| public String getName() { |
| return "Collapse 'if' statement'"; |
| } |
| |
| @Override |
| public void doFix(Project project, ProblemDescriptor descriptor) throws IncorrectOperationException { |
| final PsiElement identifier = descriptor.getPsiElement(); |
| final GrIfStatement statement = (GrIfStatement) identifier.getParent(); |
| assert statement != null; |
| final GrStatement thenBranch = statement.getThenBranch(); |
| replaceStatement(statement, thenBranch); |
| } |
| } |
| |
| @NotNull |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new IfStatementWithIdenticalBranchesVisitor(); |
| } |
| |
| private static class IfStatementWithIdenticalBranchesVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitIfStatement(@NotNull GrIfStatement statement) { |
| super.visitIfStatement(statement); |
| final GrStatement thenBranch = statement.getThenBranch(); |
| final GrStatement elseBranch = statement.getElseBranch(); |
| if (thenBranch == null || elseBranch == null) { |
| return; |
| } |
| if (EquivalenceChecker.statementsAreEquivalent(thenBranch, elseBranch)) { |
| registerStatementError(statement); |
| } |
| } |
| } |
| } |