| /* |
| * 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.exception; |
| |
| import com.intellij.codeInsight.intention.QuickFixFactory; |
| import com.intellij.codeInspection.LocalQuickFix; |
| import com.intellij.codeInspection.ProblemHighlightType; |
| import com.intellij.psi.PsiElement; |
| import org.jetbrains.annotations.Nls; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.plugins.groovy.codeInspection.BaseInspection; |
| import org.jetbrains.plugins.groovy.codeInspection.BaseInspectionVisitor; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrCatchClause; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.blocks.GrOpenBlock; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.params.GrParameter; |
| |
| public class GroovyUnusedCatchParameterInspection extends BaseInspection { |
| @Override |
| public boolean isEnabledByDefault() { |
| return true; |
| } |
| |
| @Override |
| @Nls |
| @NotNull |
| public String getGroupDisplayName() { |
| return ERROR_HANDLING; |
| } |
| |
| @Override |
| @Nls |
| @NotNull |
| public String getDisplayName() { |
| return "Unused catch parameter"; |
| } |
| |
| @NotNull |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new Visitor(); |
| } |
| |
| private static class Visitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitCatchClause(GrCatchClause catchClause) { |
| super.visitCatchClause(catchClause); |
| final GrOpenBlock block = catchClause.getBody(); |
| if (block == null) { |
| return; |
| } |
| final GrParameter parameter = catchClause.getParameter(); |
| if (parameter == null) { |
| return; |
| } |
| if (GrExceptionUtil.ignore(parameter)) return; |
| final CatchParameterUsedVisitor visitor = new CatchParameterUsedVisitor(parameter); |
| block.accept(visitor); |
| if (!visitor.isUsed()) { |
| final PsiElement nameIdentifier = parameter.getNameIdentifierGroovy(); |
| registerError(nameIdentifier, "Unused catch parameter '#ref' #loc", new LocalQuickFix[]{QuickFixFactory.getInstance().createRenameElementFix(parameter, "ignored")}, |
| ProblemHighlightType.GENERIC_ERROR_OR_WARNING); |
| } |
| } |
| } |
| } |