| /* |
| * Copyright 2007-2010 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.style; |
| |
| import com.intellij.codeInspection.ProblemDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.util.IncorrectOperationException; |
| 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.MethodCallUtils; |
| import org.jetbrains.annotations.Nls; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| public class CallToStringConcatCanBeReplacedByOperatorInspection |
| extends BaseInspection { |
| |
| @Override |
| @Nls |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message( |
| "call.to.string.concat.can.be.replaced.by.operator.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| protected String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message( |
| "call.to.string.concat.can.be.replaced.by.operator.problem.descriptor"); |
| } |
| |
| @Override |
| @Nullable |
| protected InspectionGadgetsFix buildFix(Object... infos) { |
| return new CallToStringConcatCanBeReplacedByOperatorFix(); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new CallToStringConcatCanBeReplacedByOperatorVisitor(); |
| } |
| |
| private static class CallToStringConcatCanBeReplacedByOperatorFix |
| extends InspectionGadgetsFix { |
| |
| @Override |
| @NotNull |
| public String getName() { |
| return InspectionGadgetsBundle.message("call.to.string.concat.can.be.replaced.by.operator.quickfix"); |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return getName(); |
| } |
| |
| @Override |
| protected void doFix(Project project, ProblemDescriptor descriptor) |
| throws IncorrectOperationException { |
| final PsiElement element = descriptor.getPsiElement(); |
| final PsiElement parent = element.getParent(); |
| if (!(parent instanceof PsiReferenceExpression)) { |
| return; |
| } |
| final PsiReferenceExpression referenceExpression = |
| (PsiReferenceExpression)parent; |
| final PsiExpression qualifier = |
| referenceExpression.getQualifierExpression(); |
| if (qualifier == null) { |
| return; |
| } |
| final PsiElement grandParent = referenceExpression.getParent(); |
| if (!(grandParent instanceof PsiMethodCallExpression)) { |
| return; |
| } |
| final PsiMethodCallExpression methodCallExpression = |
| (PsiMethodCallExpression)grandParent; |
| final PsiExpressionList argumentList = |
| methodCallExpression.getArgumentList(); |
| final PsiExpression[] arguments = argumentList.getExpressions(); |
| if (arguments.length != 1) { |
| return; |
| } |
| final PsiExpression argument = arguments[0]; |
| @NonNls |
| final String newExpression = |
| qualifier.getText() + '+' + argument.getText(); |
| PsiReplacementUtil.replaceExpression(methodCallExpression, newExpression); |
| } |
| } |
| |
| private static class CallToStringConcatCanBeReplacedByOperatorVisitor |
| extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitMethodCallExpression( |
| PsiMethodCallExpression expression) { |
| super.visitMethodCallExpression(expression); |
| final Project project = expression.getProject(); |
| final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project); |
| final PsiClass stringClass = |
| psiFacade.findClass(CommonClassNames.JAVA_LANG_STRING, |
| expression.getResolveScope()); |
| if (stringClass == null) { |
| return; |
| } |
| final PsiClassType stringType = |
| psiFacade.getElementFactory().createType(stringClass); |
| if (!MethodCallUtils.isCallToMethod(expression, |
| CommonClassNames.JAVA_LANG_STRING, |
| stringType, "concat", stringType)) { |
| return; |
| } |
| final PsiExpressionList argumentList = expression.getArgumentList(); |
| final PsiExpression[] arguments = argumentList.getExpressions(); |
| if (arguments.length != 1) { |
| return; |
| } |
| final PsiElement parent = expression.getParent(); |
| if (parent instanceof PsiExpressionStatement) { |
| return; |
| } |
| registerMethodCallError(expression); |
| } |
| } |
| } |