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//
// AbstractBraceMatcher.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2015 Xamarin Inc. (http://xamarin.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.Threading;
using System.Threading.Tasks;
using MonoDevelop.Ide.Editor;
using MonoDevelop.Ide.Editor.Util;
using MonoDevelop.Core.Text;
using System;
namespace MonoDevelop.Ide.Editor
{
public abstract class AbstractBraceMatcher
{
public string MimeType {
get;
internal set;
}
public virtual bool CanHandle (TextEditor editor)
{
return DesktopService.GetMimeTypeIsSubtype(editor.MimeType, MimeType);
}
public abstract Task<BraceMatchingResult?> GetMatchingBracesAsync(IReadonlyTextDocument editor, DocumentContext context, int offset, CancellationToken cancellationToken = default(CancellationToken));
}
sealed class DefaultBraceMatcher : AbstractBraceMatcher
{
public override bool CanHandle (TextEditor editor)
{
return true;
}
public override Task<BraceMatchingResult?> GetMatchingBracesAsync (IReadonlyTextDocument editor, DocumentContext context, int offset, CancellationToken cancellationToken)
{
BraceMatchingResult? result = null;
var matching = SimpleBracketMatcher.GetMatchingBracketOffset (editor, offset, cancellationToken);
if (matching >= 0) {
int start = Math.Min (offset, matching);
int end = Math.Max (offset, matching);
result = new BraceMatchingResult (new TextSegment (start, 1), new TextSegment (end, 1), offset == start);
}
return Task.FromResult (result);
}
}
}
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