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52 lines
2.2 KiB
52 lines
2.2 KiB
// |
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// ConvertCastToAsAction.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 ICSharpCode.NRefactory.TypeSystem; |
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namespace ICSharpCode.NRefactory.CSharp.Refactoring |
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{ |
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/// <summary> |
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/// Converts a cast expression to an 'as' expression |
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/// </summary> |
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[ContextAction ("Convert cast to 'as'.", Description = "Convert cast to 'as'.")] |
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public class ConvertCastToAsAction : SpecializedCodeAction<CastExpression> |
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{ |
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protected override CodeAction GetAction (RefactoringContext context, CastExpression node) |
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{ |
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if (node.Expression.Contains (context.Location)) |
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return null; |
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// only works on reference and nullable types |
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var type = context.ResolveType (node.Type); |
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var typeDef = type.GetDefinition (); |
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if (type.IsReferenceType == true || (typeDef != null && typeDef.KnownTypeCode == KnownTypeCode.NullableOfT)) |
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return new CodeAction (context.TranslateString ("Convert cast to 'as'"), script => |
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script.Replace (node, new AsExpression (node.Expression.Clone (), node.Type.Clone ()))); |
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return null; |
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} |
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} |
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}
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