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Viewing changes to contrib/ICSharpCode.NRefactory.CSharp/Refactoring/CodeActions/CreateBackingStoreAction.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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contrib/ICSharpCode.NRefactory.CSharp/Refactoring/CodeActions/CreateBackingStoreAction.cs
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// 
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// CreateBackingStore.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 System.Collections.Generic;
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namespace ICSharpCode.NRefactory.CSharp.Refactoring
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{
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        [ContextAction("Create backing store for auto property", Description = "Creates a backing field for an auto property.")]
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        public class CreateBackingStoreAction : ICodeActionProvider
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        {
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                public IEnumerable<CodeAction> GetActions(RefactoringContext context)
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                {
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                        var property = context.GetNode<PropertyDeclaration>();
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                        if (!(property != null &&
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                                !property.Getter.IsNull && !property.Setter.IsNull && // automatic properties always need getter & setter
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                                property.Getter.Body.IsNull &&
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                                property.Setter.Body.IsNull)) {
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                                yield break;
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                        }
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                        yield return new CodeAction(context.TranslateString("Create backing store"), script => {
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                                string backingStoreName = context.GetNameProposal (property.Name);
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                                // create field
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                                var backingStore = new FieldDeclaration ();
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                                backingStore.ReturnType = property.ReturnType.Clone ();
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                                var initializer = new VariableInitializer (backingStoreName);
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                                backingStore.Variables.Add (initializer);
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                                // create new property & implement the get/set bodies
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                                var newProperty = (PropertyDeclaration)property.Clone ();
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                                Expression id1;
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                                if (backingStoreName == "value")
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                                        id1 = new ThisReferenceExpression().Member("value");
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                                else
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                                        id1 = new IdentifierExpression (backingStoreName);
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                                Expression id2 = id1.Clone();
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                                newProperty.Getter.Body = new BlockStatement () {
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                                        new ReturnStatement (id1)
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                                };
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                                newProperty.Setter.Body = new BlockStatement () {
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                                        new AssignmentExpression (id2, AssignmentOperatorType.Assign, new IdentifierExpression ("value"))
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                                };
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                                script.Replace (property, newProperty);
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                                script.InsertBefore (property, backingStore);
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                                script.Link (initializer, id1, id2);
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                        });
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                }
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        }
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}
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