| /* |
| * Copyright 2006-2011 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.dependency; |
| |
| import com.intellij.analysis.AnalysisScope; |
| import com.intellij.codeInspection.CommonProblemDescriptor; |
| import com.intellij.codeInspection.GlobalInspectionContext; |
| import com.intellij.codeInspection.InspectionManager; |
| import com.intellij.codeInspection.reference.RefClass; |
| import com.intellij.codeInspection.reference.RefEntity; |
| import com.intellij.psi.PsiClass; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseGlobalInspection; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| public class CyclicClassInitializationInspection extends BaseGlobalInspection { |
| |
| @NotNull |
| @Override |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message( |
| "cyclic.class.initialization.display.name"); |
| } |
| |
| @Override |
| @Nullable |
| public CommonProblemDescriptor[] checkElement( |
| @NotNull RefEntity refEntity, |
| @NotNull AnalysisScope analysisScope, |
| @NotNull InspectionManager inspectionManager, |
| @NotNull GlobalInspectionContext globalInspectionContext) { |
| if (!(refEntity instanceof RefClass)) { |
| return null; |
| } |
| final RefClass refClass = (RefClass)refEntity; |
| final PsiClass aClass = refClass.getElement(); |
| if (aClass.getContainingClass() != null) { |
| return null; |
| } |
| final Set<RefClass> dependencies = |
| InitializationDependencyUtils.calculateTransitiveInitializationDependentsForClass(refClass); |
| final Set<RefClass> dependents = |
| InitializationDependencyUtils.calculateTransitiveInitializationDependenciesForClass(refClass); |
| final Set<RefClass> mutualDependents = new HashSet<RefClass>(dependencies); |
| mutualDependents.retainAll(dependents); |
| |
| final int numMutualDependents = mutualDependents.size(); |
| if (numMutualDependents == 0) { |
| return null; |
| } |
| final String errorString = InspectionGadgetsBundle.message( |
| "cyclic.class.initialization.problem.descriptor", |
| refEntity.getName(), numMutualDependents); |
| return new CommonProblemDescriptor[]{ |
| inspectionManager.createProblemDescriptor(errorString) |
| }; |
| } |
| } |