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//
// ConvertLambdaBodyExpressionToStatementAction.cs
//
// Author:
// Mansheng Yang <lightyang0@gmail.com>
//
// Copyright (c) 2012 Mansheng Yang <lightyang0@gmail.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.
namespace ICSharpCode.NRefactory.CSharp.Refactoring
{
[ContextAction ("Converts expression of lambda body to statement",
Description = "Converts expression of lambda body to statement")]
public class ConvertLambdaBodyExpressionToStatementAction : SpecializedCodeAction<LambdaExpression>
{
protected override CodeAction GetAction (RefactoringContext context, LambdaExpression node)
{
if (!node.ArrowToken.Contains (context.Location))
return null;
var bodyExpr = node.Body as Expression;
if (bodyExpr == null)
return null;
return new CodeAction (context.TranslateString ("Convert to lambda statement"),
script =>
{
var body = new BlockStatement ();
if (RequireReturnStatement (context, node)) {
body.Add (new ReturnStatement (bodyExpr.Clone ()));
} else {
body.Add (new ExpressionStatement (bodyExpr.Clone ()));
}
script.Replace (bodyExpr, body);
},
node
);
}
static bool RequireReturnStatement (RefactoringContext context, LambdaExpression lambda)
{
var type = LambdaHelper.GetLambdaReturnType (context, lambda);
return type != null && type.ReflectionName != "System.Void";
}
}
}
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