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Viewing changes to external/nrefactory/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/AccessToClosureIssues/AccessToDisposedClosureIssue.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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external/nrefactory/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/AccessToClosureIssues/AccessToDisposedClosureIssue.cs
 
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// 
 
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// AccessToDisposedClosureIssue.cs
 
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// 
 
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// Author:
 
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//      Mansheng Yang <lightyang0@gmail.com>
 
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// 
 
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// Copyright (c) 2012 Mansheng Yang <lightyang0@gmail.com>
 
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// 
 
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// Permission is hereby granted, free of charge, to any person obtaining a copy
 
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// of this software and associated documentation files (the "Software"), to deal
 
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// in the Software without restriction, including without limitation the rights
 
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 
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// copies of the Software, and to permit persons to whom the Software is
 
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// furnished to do so, subject to the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be included in
 
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// all copies or substantial portions of the Software.
 
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// 
 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 
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// THE SOFTWARE.
 
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using System.Collections.Generic;
 
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using System.Linq;
 
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using ICSharpCode.NRefactory.CSharp.Analysis;
 
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using ICSharpCode.NRefactory.TypeSystem;
 
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namespace ICSharpCode.NRefactory.CSharp.Refactoring
 
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{
 
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    //[IssueDescription ("Access to disposed closure variable",
 
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    //                   Description = "Access to closure variable from anonymous method when the variable is" + 
 
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    //                                 " disposed externally",
 
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    //                   Category = IssueCategories.CodeQualityIssues,
 
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    //                   Severity = Severity.Warning,
 
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    //                   IssueMarker = IssueMarker.Underline,
 
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    //                   ResharperDisableKeyword = "AccessToDisposedClosure")]
 
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        public class AccessToDisposedClosureIssue : AccessToClosureIssue
 
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        {
 
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                public AccessToDisposedClosureIssue ()
 
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                        : base ("Access to disposed closure")
 
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                {
 
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                }
 
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                protected override bool IsTargetVariable (IVariable variable)
 
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                {
 
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                        return variable.Type.GetAllBaseTypeDefinitions ().Any (t => t.KnownTypeCode == KnownTypeCode.IDisposable);
 
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                }
 
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                protected override NodeKind GetNodeKind (AstNode node)
 
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                {
 
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                        if (node.Parent is UsingStatement)
 
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                                return NodeKind.ReferenceAndModification;
 
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                        if (node.Parent is VariableDeclarationStatement && node.Parent.Parent is UsingStatement)
 
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                                return NodeKind.Modification;
 
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                        var memberRef = node.Parent as MemberReferenceExpression;
 
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                        if (memberRef != null && memberRef.Parent is InvocationExpression && memberRef.MemberName == "Dispose")
 
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                                return NodeKind.ReferenceAndModification;
 
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                        return NodeKind.Reference;
 
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                }
 
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                protected override bool CanReachModification (ControlFlowNode node, Statement start,
 
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                                                                                                   IDictionary<Statement, IList<Node>> modifications)
 
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                {
 
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                        if (base.CanReachModification (node, start, modifications))
 
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                                return true;
 
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                        if (node.NextStatement != start) {
 
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                                var usingStatement = node.PreviousStatement as UsingStatement;
 
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                                if (usingStatement != null) {
 
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                                        if (modifications.ContainsKey(usingStatement))
 
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                                                return true;
 
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                                        if (usingStatement.ResourceAcquisition is Statement &&
 
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                                                modifications.ContainsKey ((Statement)usingStatement.ResourceAcquisition))
 
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                                                return true;
 
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                                }
 
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                        }
 
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                        return false;
 
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                }
 
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                protected override IEnumerable<CodeAction> GetFixes (BaseRefactoringContext context, Node env,
 
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                                                                                                                         string variableName)
 
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                {
 
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                        yield break;
 
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                }
 
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        }
 
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}
 
 
b'\\ No newline at end of file'