| /* |
| * Copyright 2003-2010 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.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.StringUtils; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class InstantiatingObjectToGetClassObjectInspection |
| extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message( |
| "instantiating.object.to.get.class.object.display.name"); |
| } |
| |
| @Override |
| public boolean isEnabledByDefault() { |
| return true; |
| } |
| |
| @Override |
| @NotNull |
| protected String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message( |
| "instantiating.object.to.get.class.object.problem.descriptor"); |
| } |
| |
| @Override |
| protected InspectionGadgetsFix buildFix(Object... infos) { |
| return new InstantiatingObjectToGetClassObjectFix(); |
| } |
| |
| private static class InstantiatingObjectToGetClassObjectFix |
| extends InspectionGadgetsFix { |
| |
| @Override |
| @NotNull |
| public String getName() { |
| return InspectionGadgetsBundle.message( |
| "instantiating.object.to.get.class.object.replace.quickfix"); |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return getName(); |
| } |
| |
| @Override |
| public void doFix(Project project, ProblemDescriptor descriptor) |
| throws IncorrectOperationException { |
| final PsiMethodCallExpression expression = |
| (PsiMethodCallExpression)descriptor.getPsiElement(); |
| final PsiReferenceExpression methodExpression = |
| expression.getMethodExpression(); |
| final PsiExpression qualifier = |
| methodExpression.getQualifierExpression(); |
| if (qualifier == null) { |
| return; |
| } |
| final PsiType type = qualifier.getType(); |
| if (type == null) { |
| return; |
| } |
| PsiReplacementUtil.replaceExpression(expression, |
| getTypeText(type, new StringBuilder()) + ".class"); |
| } |
| |
| private static StringBuilder getTypeText(PsiType type, |
| StringBuilder text) { |
| if (type instanceof PsiArrayType) { |
| text.append("[]"); |
| final PsiArrayType arrayType = (PsiArrayType)type; |
| getTypeText(arrayType.getComponentType(), text); |
| } |
| else if (type instanceof PsiClassType) { |
| final String canonicalText = type.getCanonicalText(); |
| final String typeText = |
| StringUtils.stripAngleBrackets(canonicalText); |
| text.insert(0, typeText); |
| } |
| else { |
| text.insert(0, type.getCanonicalText()); |
| } |
| return text; |
| } |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new InstantiatingObjectToGetClassObjectVisitor(); |
| } |
| |
| private static class InstantiatingObjectToGetClassObjectVisitor |
| extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitMethodCallExpression( |
| @NotNull PsiMethodCallExpression expression) { |
| super.visitMethodCallExpression(expression); |
| final PsiReferenceExpression methodExpression = |
| expression.getMethodExpression(); |
| @NonNls final String methodName = |
| methodExpression.getReferenceName(); |
| if (!"getClass".equals(methodName)) { |
| return; |
| } |
| final PsiExpressionList argumentList = expression.getArgumentList(); |
| final PsiExpression[] args = argumentList.getExpressions(); |
| if (args.length != 0) { |
| return; |
| } |
| final PsiExpression qualifier = |
| methodExpression.getQualifierExpression(); |
| if (!(qualifier instanceof PsiNewExpression)) { |
| return; |
| } |
| final PsiNewExpression newExpression = (PsiNewExpression)qualifier; |
| if (newExpression.getAnonymousClass() != null) { |
| return; |
| } |
| registerError(expression); |
| } |
| } |
| } |