| /* |
| * Copyright 2003-2013 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.resources; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.siyeh.HardcodedMethodConstants; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.psiutils.TypeUtils; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class ChannelResourceInspection extends ResourceInspection { |
| |
| @Override |
| @NotNull |
| public String getID() { |
| return "ChannelOpenedButNotSafelyClosed"; |
| } |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("channel.opened.not.closed.display.name"); |
| } |
| |
| protected boolean isResourceCreation(PsiExpression expression) { |
| if (!(expression instanceof PsiMethodCallExpression)) { |
| return false; |
| } |
| final PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression)expression; |
| final PsiReferenceExpression methodExpression = methodCallExpression.getMethodExpression(); |
| final String methodName = methodExpression.getReferenceName(); |
| if (!HardcodedMethodConstants.GET_CHANNEL.equals(methodName)) { |
| return false; |
| } |
| final PsiExpression qualifier = methodExpression.getQualifierExpression(); |
| if (qualifier == null || |
| TypeUtils.expressionHasTypeOrSubtype(qualifier, |
| "java.net.Socket", "java.net.DatagramSocket", "java.net.ServerSocket", |
| "java.net.SocketInputStream", "java.net.SocketOutputStream", "java.io.FileInputStream", |
| "java.io.FileOutputStream", "java.io.RandomAccessFile", |
| "com.sun.corba.se.pept.transport.EventHandler", "sun.nio.ch.InheritedChannel") == null) { |
| return false; |
| } |
| return TypeUtils.expressionHasTypeOrSubtype(expression, "java.nio.channels.Channel"); |
| } |
| |
| @Override |
| protected boolean isResourceFactoryClosed(PsiExpression expression, boolean insideTryAllowed) { |
| if (!(expression instanceof PsiMethodCallExpression)) { |
| return false; |
| } |
| final PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression)expression; |
| final PsiReferenceExpression methodExpression = methodCallExpression.getMethodExpression(); |
| final PsiExpression qualifier = methodExpression.getQualifierExpression(); |
| if (!(qualifier instanceof PsiReferenceExpression)) { |
| return false; |
| } |
| final PsiReferenceExpression referenceExpression = (PsiReferenceExpression)qualifier; |
| final PsiElement target = referenceExpression.resolve(); |
| if (!(target instanceof PsiVariable)) { |
| return false; |
| } |
| final PsiVariable variable = (PsiVariable)target; |
| PsiTryStatement tryStatement = PsiTreeUtil.getParentOfType(expression, PsiTryStatement.class, true, PsiMember.class); |
| if (tryStatement == null) { |
| return false; |
| } |
| while (!isResourceClosedInFinally(tryStatement, variable)) { |
| tryStatement = PsiTreeUtil.getParentOfType(tryStatement, PsiTryStatement.class, true, PsiMember.class); |
| if (tryStatement == null) { |
| return false; |
| } |
| } |
| return true; |
| } |
| } |