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//
// CreateBackingStore.cs
//
// Author:
// Mike Krüger <mkrueger@novell.com>
//
// Copyright (c) 2011 Mike Krüger <mkrueger@novell.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Collections.Generic;
namespace ICSharpCode.NRefactory.CSharp.Refactoring
{
[ContextAction("Create backing store for auto property", Description = "Creates a backing field for an auto property.")]
public class CreateBackingStoreAction : ICodeActionProvider
{
public IEnumerable<CodeAction> GetActions(RefactoringContext context)
{
var property = context.GetNode<PropertyDeclaration>();
if (!(property != null &&
!property.Getter.IsNull && !property.Setter.IsNull && // automatic properties always need getter & setter
property.Getter.Body.IsNull &&
property.Setter.Body.IsNull)) {
yield break;
}
yield return new CodeAction(context.TranslateString("Create backing store"), script => {
string backingStoreName = context.GetNameProposal (property.Name);
// create field
var backingStore = new FieldDeclaration ();
if (property.Modifiers.HasFlag (Modifiers.Static))
backingStore.Modifiers |= Modifiers.Static;
backingStore.ReturnType = property.ReturnType.Clone ();
var initializer = new VariableInitializer (backingStoreName);
backingStore.Variables.Add (initializer);
// create new property & implement the get/set bodies
var newProperty = (PropertyDeclaration)property.Clone ();
Expression id1;
if (backingStoreName == "value")
id1 = new ThisReferenceExpression().Member("value");
else
id1 = new IdentifierExpression (backingStoreName);
Expression id2 = id1.Clone();
newProperty.Getter.Body = new BlockStatement () {
new ReturnStatement (id1)
};
newProperty.Setter.Body = new BlockStatement () {
new AssignmentExpression (id2, AssignmentOperatorType.Assign, new IdentifierExpression ("value"))
};
script.Replace (property, newProperty);
script.InsertBefore (property, backingStore);
script.Link (initializer, id1, id2);
}, property.NameToken);
}
}
}
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