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Viewing changes to external/nrefactory/ICSharpCode.NRefactory.CSharp/Refactoring/CodeActions/SplitDeclarationListAction.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/SplitDeclarationListAction.cs
 
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// 
 
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// SplitDeclarationListAction.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;
 
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using System.Collections.Generic;
 
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using System.Linq;
 
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namespace ICSharpCode.NRefactory.CSharp.Refactoring
 
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{
 
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        [ContextAction ("Split declaration list", 
 
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                Description = "Split variable declaration with multiple variables into declarations with a single variable")] 
 
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        public class SplitDeclarationListAction : ICodeActionProvider
 
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        {
 
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                public IEnumerable<CodeAction> GetActions (RefactoringContext context)
 
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                {
 
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                        // field, local var, event, fixed var, fixed field
 
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                        // local variable
 
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                        var variableDecl = context.GetNode<VariableDeclarationStatement> ();
 
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                        if (variableDecl != null && variableDecl.Parent is BlockStatement) {
 
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                                return GetAction (context, variableDecl, v => v.Variables);
 
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                        }
 
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                        // field
 
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                        var fieldDecl = context.GetNode<FieldDeclaration> ();
 
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                        if (fieldDecl != null)
 
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                                return GetAction (context, fieldDecl, f => f.Variables);
 
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                        // event
 
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                        var eventDecl = context.GetNode<EventDeclaration> ();
 
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                        if (eventDecl != null)
 
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                                return GetAction (context, eventDecl, e => e.Variables);
 
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                        // fixed field
 
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                        var fixedFieldDecl = context.GetNode<FixedFieldDeclaration> ();
 
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                        if (fixedFieldDecl != null)
 
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                                return GetAction (context, fixedFieldDecl, f => f.Variables);
 
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                        return Enumerable.Empty<CodeAction> ();
 
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                }
 
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                IEnumerable<CodeAction> GetAction<T, S> (RefactoringContext context, T decl, 
 
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                                                                                                 Func<T, AstNodeCollection<S>> getInitializers)
 
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                        where T : AstNode
 
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                        where S : AstNode
 
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                {
 
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                        var initializers = getInitializers(decl);
 
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                        if (initializers.Count < 2)
 
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                                yield break;
 
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                        yield return new CodeAction (context.TranslateString ("Split declaration list"),
 
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                                script =>
 
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                                {
 
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                                        var emptyDecl = (T)decl.Clone ();
 
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                                        getInitializers (emptyDecl).Clear ();
 
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                                        var declList = initializers.Select (v =>
 
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                                        {
 
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                                                var singleDecl = (T)emptyDecl.Clone ();
 
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                                                getInitializers(singleDecl).Add ((S)v.Clone ());
 
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                                                return singleDecl;
 
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                                        });
 
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                                        foreach (var singleDecl in declList)
 
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                                                script.InsertBefore (decl, singleDecl);
 
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                                        script.Remove (decl);
 
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                                }, decl);
 
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                }
 
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        }
 
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}