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//
// RemoveBraces.cs
//
// Author:
// Mike Krüger <mkrueger@novell.com>
//
// Copyright (c) 2011 Mike Krüger <mkrueger@novell.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.
using System;
using System.Linq;
using System.Threading;
using System.Collections.Generic;
namespace ICSharpCode.NRefactory.CSharp.Refactoring
{
[ContextAction("Remove braces", Description = "Removes redundant braces around a statement.")]
public class RemoveBracesAction : ICodeActionProvider
{
public IEnumerable<CodeAction> GetActions(RefactoringContext context)
{
var block = GetBlockStatement(context);
if (block == null) {
yield break;
}
yield return new CodeAction (context.TranslateString("Remove braces"), script => {
var start = script.GetCurrentOffset (block.LBraceToken.GetPrevNode ().EndLocation);
var end = script.GetCurrentOffset (block.LBraceToken.EndLocation);
if (end <= start)
return;
script.RemoveText (start, end - start);
script.Remove(block.LBraceToken);
script.Remove(block.RBraceToken);
script.FormatText(block.Parent);
}, block);
}
static BlockStatement GetBlockStatement(RefactoringContext context)
{
var block = context.GetNode<BlockStatement>();
if (block == null || block.LBraceToken.IsNull || block.RBraceToken.IsNull)
return null;
if (!(block.LBraceToken.IsInside(context.Location) || block.RBraceToken.IsInside(context.Location)))
return null;
if (!(block.Parent is Statement) || block.Parent is TryCatchStatement)
return null;
if (block.Statements.Count != 1 || block.Statements.First () is VariableDeclarationStatement)
return null;
return block;
}
}
}
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