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// ConvertAnonymousDelegateToExpression.cs
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// Simon Lindgren <simon.n.lindgren@gmail.com>
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// Copyright (c) 2012 Simon Lindgren
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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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// 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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// 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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namespace ICSharpCode.NRefactory.CSharp.Refactoring
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[ContextAction("Convert anonymous delegate to lambda block",
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Description = "Converts an anonymous delegate into a lambda in block form.")]
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public class ConvertAnonymousDelegateToLambdaAction : SpecializedCodeAction<AnonymousMethodExpression>
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#region implemented abstract members of SpecializedCodeAction
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protected override CodeAction GetAction(RefactoringContext context, AnonymousMethodExpression node)
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if (context.Location < node.DelegateToken.StartLocation || context.Location >= node.Body.StartLocation)
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if (!node.HasParameterList)
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return new CodeAction(context.TranslateString("Convert to lambda block"), script => {
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var parent = node.Parent;
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while (!(parent is Statement))
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parent = parent.Parent;
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bool explicitLambda = parent is VariableDeclarationStatement && ((VariableDeclarationStatement)parent).Type.GetText() == "var";
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var lambda = new LambdaExpression { Body = node.Body.Clone() };
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foreach (var parameter in node.Parameters) {
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lambda.Parameters.Add(new ParameterDeclaration { Type = parameter.Type.Clone(), Name = parameter.Name });
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lambda.Parameters.Add(new ParameterDeclaration { Name = parameter.Name });
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script.Replace(node, lambda);