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Viewing changes to external/nrefactory/ICSharpCode.NRefactory.CSharp/Refactoring/CodeActions/UseExplicitTypeAction.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/UseExplicitTypeAction.cs
 
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// 
 
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// UseExplicitType.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.Linq;
 
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using ICSharpCode.NRefactory.PatternMatching;
 
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using ICSharpCode.NRefactory.TypeSystem;
 
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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("Use explicit type", Description = "Converts local variable declaration to be explicit typed.")]
 
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        public class UseExplicitTypeAction: ICodeActionProvider
 
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        {
 
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                public IEnumerable<CodeAction> GetActions(RefactoringContext context)
 
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                {
 
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                        var varDecl = GetVariableDeclarationStatement(context);
 
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                        AstNode node;
 
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                        IType type;
 
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                        if (varDecl != null) {
 
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                                type = context.Resolve(varDecl.Variables.First().Initializer).Type;
 
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                                node = varDecl;
 
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                        } else {
 
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                                var foreachStatement = GetForeachStatement(context);
 
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                                if (foreachStatement == null) {
 
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                                        yield break;
 
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                                }
 
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                                type = context.Resolve(foreachStatement.VariableType).Type;
 
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                                node = foreachStatement;
 
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                        }
 
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                        if (!(!type.Equals(SpecialType.NullType) && !type.Equals(SpecialType.UnknownType) && !ContainsAnonymousType(type))) {
 
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                                yield break;
 
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                        }
 
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                        yield return new CodeAction (context.TranslateString("Use explicit type"), script => {
 
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                                if (varDecl != null) {
 
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                                        script.Replace (varDecl.Type, context.CreateShortType (type));
 
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                                } else {
 
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                                        var foreachStatement = GetForeachStatement (context);
 
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                                        script.Replace (foreachStatement.VariableType, context.CreateShortType (type));
 
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                                }
 
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                        }, node);
 
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                }
 
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                static bool ContainsAnonymousType (IType type)
 
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                {
 
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                        if (type.Kind == TypeKind.Anonymous)
 
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                                return true;
 
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                        var arrayType = type as ArrayType;
 
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                        return arrayType != null && ContainsAnonymousType (arrayType.ElementType);
 
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                }
 
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                static readonly AstType varType = new SimpleType ("var");
 
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                static VariableDeclarationStatement GetVariableDeclarationStatement (RefactoringContext context)
 
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                {
 
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                        var result = context.GetNode<VariableDeclarationStatement> ();
 
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                        if (result != null && result.Variables.Count == 1 && !result.Variables.First ().Initializer.IsNull && result.Type.Contains (context.Location.Line, context.Location.Column) && result.Type.IsMatch (varType)) {
 
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                                if (context.Resolve (result.Variables.First ().Initializer) == null)
 
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                                        return null;
 
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                                return result;
 
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                        }
 
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                        return null;
 
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                }
 
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                static ForeachStatement GetForeachStatement (RefactoringContext context)
 
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                {
 
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                        var result = context.GetNode<ForeachStatement> ();
 
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                        if (result != null && result.VariableType.Contains (context.Location) && result.VariableType.IsMatch (varType))
 
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                                return result;
 
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                        return null;
 
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                }
 
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        }
 
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}
 
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