| /* |
| * Copyright 2003-2011 Dave Griffith, 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.performance; |
| |
| import com.intellij.codeInspection.ProblemDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.util.IncorrectOperationException; |
| import com.siyeh.HardcodedMethodConstants; |
| 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.ExpressionUtils; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class StringBufferToStringInConcatenationInspection |
| extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message( |
| "string.buffer.to.string.in.concatenation.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| protected String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message( |
| "string.buffer.to.string.in.concatenation.problem.descriptor"); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new StringBufferToStringVisitor(); |
| } |
| |
| @Override |
| public InspectionGadgetsFix buildFix(Object... infos) { |
| return new StringBufferToStringFix(); |
| } |
| |
| private static class StringBufferToStringFix extends InspectionGadgetsFix { |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return getName(); |
| } |
| |
| @Override |
| @NotNull |
| public String getName() { |
| return InspectionGadgetsBundle.message( |
| "string.buffer.to.string.in.concatenation.remove.quickfix"); |
| } |
| |
| @Override |
| public void doFix(Project project, ProblemDescriptor descriptor) |
| throws IncorrectOperationException { |
| final PsiElement methodNameToken = descriptor.getPsiElement(); |
| final PsiElement methodCallExpression = methodNameToken.getParent(); |
| assert methodCallExpression != null; |
| final PsiMethodCallExpression methodCall = |
| (PsiMethodCallExpression)methodCallExpression.getParent(); |
| assert methodCall != null; |
| final PsiReferenceExpression expression = |
| methodCall.getMethodExpression(); |
| final PsiExpression qualifier = expression.getQualifierExpression(); |
| assert qualifier != null; |
| final String newExpression = qualifier.getText(); |
| PsiReplacementUtil.replaceExpression(methodCall, newExpression); |
| } |
| } |
| |
| private static class StringBufferToStringVisitor |
| extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitMethodCallExpression( |
| @NotNull PsiMethodCallExpression expression) { |
| super.visitMethodCallExpression(expression); |
| if (!ExpressionUtils.isStringConcatenationOperand(expression)) { |
| return; |
| } |
| if (!isStringBufferToString(expression)) { |
| return; |
| } |
| registerMethodCallError(expression); |
| } |
| |
| private static boolean isStringBufferToString( |
| PsiMethodCallExpression expression) { |
| final PsiReferenceExpression methodExpression = |
| expression.getMethodExpression(); |
| final String referenceName = methodExpression.getReferenceName(); |
| if (!HardcodedMethodConstants.TO_STRING.equals(referenceName)) { |
| return false; |
| } |
| final PsiMethod method = expression.resolveMethod(); |
| if (method == null) { |
| return false; |
| } |
| final PsiParameterList parameterList = method.getParameterList(); |
| if (parameterList.getParametersCount() != 0) { |
| return false; |
| } |
| final PsiClass aClass = method.getContainingClass(); |
| if (aClass == null) { |
| return false; |
| } |
| final String className = aClass.getQualifiedName(); |
| return CommonClassNames.JAVA_LANG_STRING_BUFFER.equals(className) || |
| CommonClassNames.JAVA_LANG_STRING_BUILDER.equals(className); |
| } |
| } |
| } |