| /* |
| * Copyright 2008-2012 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.threading; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import org.jetbrains.annotations.Nls; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class SynchronizationOnLocalVariableOrMethodParameterInspection extends BaseInspection { |
| |
| @SuppressWarnings({"PublicField"}) |
| public boolean reportLocalVariables = true; |
| @SuppressWarnings({"PublicField"}) |
| public boolean reportMethodParameters = true; |
| |
| @Override |
| @Nls |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("synchronization.on.local.variable.or.method.parameter.display.name"); |
| } |
| |
| @Override |
| public boolean isEnabledByDefault() { |
| return true; |
| } |
| |
| @Override |
| @NotNull |
| protected String buildErrorString(Object... infos) { |
| final Boolean localVariable = (Boolean)infos[0]; |
| if (localVariable.booleanValue()) { |
| return InspectionGadgetsBundle.message("synchronization.on.local.variable.problem.descriptor"); |
| } |
| else { |
| return InspectionGadgetsBundle.message("synchronization.on.method.parameter.problem.descriptor"); |
| } |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new SynchronizationOnLocalVariableVisitor(); |
| } |
| |
| private class SynchronizationOnLocalVariableVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitSynchronizedStatement(PsiSynchronizedStatement statement) { |
| super.visitSynchronizedStatement(statement); |
| if (!reportLocalVariables && !reportMethodParameters) { |
| return; |
| } |
| final PsiExpression lockExpression = statement.getLockExpression(); |
| if (!(lockExpression instanceof PsiReferenceExpression)) { |
| return; |
| } |
| final PsiReferenceExpression referenceExpression = (PsiReferenceExpression)lockExpression; |
| if (referenceExpression.isQualified()) { |
| return; |
| } |
| boolean localVariable = false; |
| final PsiElement target = referenceExpression.resolve(); |
| if (target instanceof PsiLocalVariable) { |
| if (!reportLocalVariables) { |
| return; |
| } |
| localVariable = true; |
| } |
| else if (target instanceof PsiParameter) { |
| final PsiParameter parameter = (PsiParameter)target; |
| final PsiElement scope = parameter.getDeclarationScope(); |
| if (scope instanceof PsiMethod) { |
| if (!reportMethodParameters) { |
| return; |
| } |
| } |
| else { |
| if (!reportLocalVariables) { |
| return; |
| } |
| localVariable = true; |
| } |
| } |
| else { |
| return; |
| } |
| final PsiElement statementScope = getScope(statement); |
| final PsiElement targetScope = getScope(target); |
| if (statementScope != targetScope) { |
| return; |
| } |
| registerError(referenceExpression, Boolean.valueOf(localVariable)); |
| } |
| |
| private PsiElement getScope(PsiElement element) { |
| return PsiTreeUtil.getParentOfType(element, PsiMethod.class, PsiLambdaExpression.class, PsiClassInitializer.class); |
| } |
| } |
| } |