| /* |
| * Copyright 2000-2013 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 com.siyeh.ig.fixes; |
| |
| import com.intellij.codeInsight.FileModificationService; |
| import com.intellij.codeInspection.ProblemDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.psi.search.searches.ReferencesSearch; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.util.Query; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.InspectionGadgetsFix; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| |
| /** |
| * @author Bas Leijdekkers |
| */ |
| public class ConvertToVarargsMethodFix extends InspectionGadgetsFix { |
| |
| @Override |
| @NotNull |
| public String getFamilyName() { |
| return getName(); |
| } |
| |
| @NotNull |
| @Override |
| public String getName() { |
| return InspectionGadgetsBundle.message("convert.to.variable.arity.method.quickfix"); |
| } |
| |
| @Override |
| protected boolean prepareForWriting() { |
| return false; |
| } |
| |
| @Override |
| protected void doFix(Project project, ProblemDescriptor descriptor) { |
| final PsiElement element = descriptor.getPsiElement(); |
| final PsiElement parent = element.getParent(); |
| if (!(parent instanceof PsiMethod)) { |
| return; |
| } |
| final PsiMethod method = (PsiMethod)parent; |
| final Collection<PsiElement> writtenElements = new ArrayList<PsiElement>(); |
| final Collection<PsiReferenceExpression> methodCalls = new ArrayList<PsiReferenceExpression>(); |
| writtenElements.add(method); |
| for (final PsiReference reference : ReferencesSearch.search(method, method.getUseScope(), false)) { |
| final PsiElement referenceElement = reference.getElement(); |
| if (referenceElement instanceof PsiReferenceExpression) { |
| writtenElements.add(referenceElement); |
| methodCalls.add((PsiReferenceExpression)referenceElement); |
| } |
| } |
| if (!FileModificationService.getInstance().preparePsiElementsForWrite(writtenElements)) { |
| return; |
| } |
| makeMethodVarargs(method); |
| makeMethodCallsVarargs(methodCalls); |
| } |
| |
| private static void makeMethodVarargs(PsiMethod method) { |
| final PsiParameterList parameterList = method.getParameterList(); |
| if (parameterList.getParametersCount() == 0) { |
| return; |
| } |
| final PsiParameter[] parameters = parameterList.getParameters(); |
| final PsiParameter lastParameter = parameters[parameters.length - 1]; |
| final PsiType type = lastParameter.getType(); |
| if (!(type instanceof PsiArrayType)) { |
| return; |
| } |
| final PsiArrayType arrayType = (PsiArrayType)type; |
| final PsiType componentType = arrayType.getComponentType(); |
| final PsiElementFactory factory = JavaPsiFacade.getElementFactory(method.getProject()); |
| final PsiType ellipsisType = PsiEllipsisType.createEllipsis(componentType, type.getAnnotations()); |
| final PsiTypeElement newTypeElement = factory.createTypeElement(ellipsisType); |
| final PsiTypeElement typeElement = lastParameter.getTypeElement(); |
| if (typeElement != null) { |
| typeElement.replace(newTypeElement); |
| } |
| } |
| |
| private static void makeMethodCallsVarargs(Collection<PsiReferenceExpression> referenceExpressions) { |
| for (final PsiReferenceExpression referenceExpression : referenceExpressions) { |
| final PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression)referenceExpression.getParent(); |
| final PsiExpressionList argumentList = methodCallExpression.getArgumentList(); |
| final PsiExpression[] arguments = argumentList.getExpressions(); |
| if (arguments.length == 0) { |
| continue; |
| } |
| final PsiExpression lastArgument = arguments[arguments.length - 1]; |
| if (!(lastArgument instanceof PsiNewExpression)) { |
| continue; |
| } |
| final PsiNewExpression newExpression = (PsiNewExpression)lastArgument; |
| final PsiArrayInitializerExpression arrayInitializerExpression = newExpression.getArrayInitializer(); |
| if (arrayInitializerExpression == null) { |
| continue; |
| } |
| final PsiExpression[] initializers = arrayInitializerExpression.getInitializers(); |
| for (final PsiExpression initializer : initializers) { |
| argumentList.add(initializer); |
| } |
| lastArgument.delete(); |
| } |
| } |
| } |