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Viewing changes to external/nrefactory/ICSharpCode.NRefactory.CSharp/Refactoring/CodeActions/InsertAnonymousMethodSignatureAction.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/CodeActions/InsertAnonymousMethodSignatureAction.cs
 
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// 
 
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// InsertAnonymousMethodSignature.cs
 
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//  
 
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// Author:
 
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//       Mike Krüger <mkrueger@novell.com>
 
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// 
 
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// Copyright (c) 2011 Mike Krüger <mkrueger@novell.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;
 
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using ICSharpCode.NRefactory.TypeSystem;
 
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using System.Linq;
 
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using System.Text;
 
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using System.Threading;
 
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using System.Collections.Generic;
 
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namespace ICSharpCode.NRefactory.CSharp.Refactoring
 
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{
 
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        [ContextAction("Insert anonymous method signature", Description = "Inserts a signature to parameterless anonymous methods.")]
 
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        public class InsertAnonymousMethodSignatureAction : ICodeActionProvider
 
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        {
 
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                public IEnumerable<CodeAction> GetActions(RefactoringContext context)
 
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                {
 
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                        IType type;
 
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                        var anonymousMethodExpression = GetAnonymousMethodExpression(context, out type);
 
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                        if (anonymousMethodExpression == null) {
 
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                                yield break;
 
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                        }
 
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                        yield return new CodeAction (context.TranslateString("Insert anonymous method signature"), script => {
 
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                                var delegateMethod = type.GetDelegateInvokeMethod();
 
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                                var sb = new StringBuilder ("(");
 
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                                for (int k = 0; k < delegateMethod.Parameters.Count; k++) {
 
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                                        if (k > 0) {
 
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                                                sb.Append(", ");
 
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                                        }
 
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                                        var paramType = delegateMethod.Parameters [k].Type;
 
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                                        sb.Append(context.CreateShortType(paramType));
 
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                                        sb.Append(" ");
 
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                                        sb.Append(delegateMethod.Parameters [k].Name);
 
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                                }
 
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                                sb.Append(")");
 
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                                script.InsertText(context.GetOffset(anonymousMethodExpression.DelegateToken.EndLocation), sb.ToString());
 
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                        }, anonymousMethodExpression);
 
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                }
 
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                static AnonymousMethodExpression GetAnonymousMethodExpression (RefactoringContext context, out IType delegateType)
 
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                {
 
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                        delegateType = null;
 
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                        var anonymousMethodExpression = context.GetNode<AnonymousMethodExpression> ();
 
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                        if (anonymousMethodExpression == null || !anonymousMethodExpression.DelegateToken.Contains (context.Location) || anonymousMethodExpression.HasParameterList)
 
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                                return null;
 
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                        IType resolvedType = null;
 
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                        var parent = anonymousMethodExpression.Parent;
 
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                        if (parent is AssignmentExpression) {
 
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                                resolvedType = context.Resolve (((AssignmentExpression)parent).Left).Type;
 
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                        } else if (parent is VariableInitializer) {
 
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                                resolvedType = context.Resolve (((VariableDeclarationStatement)parent.Parent).Type).Type;
 
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                        } else if (parent is InvocationExpression) {
 
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                                // TODO: handle invocations
 
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                        }
 
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                        if (resolvedType == null)
 
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                                return null;
 
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                        delegateType = resolvedType;
 
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                        if (delegateType.Kind != TypeKind.Delegate) 
 
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                                return null;
 
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                        return anonymousMethodExpression;
 
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                }
 
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        }
 
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}
 
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