| /* |
| * Copyright 2007-2008 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 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.psi.templateLanguages.TemplateLanguageFileViewProvider; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.Nls; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| 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.ControlFlowUtils; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrBlockStatement; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrLoopStatement; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrStatement; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.branch.GrContinueStatement; |
| |
| public class GroovyUnnecessaryContinueInspection extends BaseInspection { |
| |
| @Override |
| @Nls |
| @NotNull |
| public String getGroupDisplayName() { |
| return CONTROL_FLOW; |
| } |
| |
| @Override |
| @Nls |
| @NotNull |
| public String getDisplayName() { |
| return "Unnecessary 'continue' statement"; |
| } |
| |
| @Override |
| @Nullable |
| protected String buildErrorString(Object... args) { |
| return "#ref is unnecessary as the last statement in a loop #loc"; |
| |
| } |
| |
| @Override |
| public boolean isEnabledByDefault() { |
| return true; |
| } |
| |
| @NotNull |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new Visitor(); |
| } |
| |
| @Override |
| @Nullable |
| protected GroovyFix buildFix(@NotNull PsiElement location) { |
| return new UnnecessaryContinueFix(); |
| } |
| |
| private static class UnnecessaryContinueFix extends GroovyFix { |
| |
| @Override |
| @NotNull |
| public String getName() { |
| return "Remove unnecessary continue"; |
| } |
| |
| @Override |
| public void doFix(Project project, ProblemDescriptor descriptor) |
| throws IncorrectOperationException { |
| final PsiElement continueKeywordElement = descriptor.getPsiElement(); |
| final GrContinueStatement continueStatement = (GrContinueStatement) continueKeywordElement.getParent(); |
| assert continueStatement != null; |
| continueStatement.removeStatement(); |
| } |
| } |
| |
| private static class Visitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitContinueStatement(GrContinueStatement continueStatement) { |
| super.visitContinueStatement(continueStatement); |
| if (continueStatement.getContainingFile().getViewProvider() instanceof TemplateLanguageFileViewProvider) { |
| return; |
| } |
| final GrStatement continuedStatement = continueStatement.findTargetStatement(); |
| if (continuedStatement == null) { |
| return; |
| } |
| |
| if (!(continuedStatement instanceof GrLoopStatement)) return; |
| final GrStatement body = ((GrLoopStatement)continuedStatement).getBody(); |
| if (body == null) return; |
| |
| |
| if (body instanceof GrBlockStatement && ControlFlowUtils.blockCompletesWithStatement((GrBlockStatement)body, continueStatement) || |
| !(body instanceof GrBlockStatement) && ControlFlowUtils.statementCompletesWithStatement(body, continueStatement)){ |
| registerStatementError(continueStatement); |
| } |
| } |
| } |
| } |