// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
using System;
using System.Collections.Immutable;
using System.Composition;
using System.Threading;
using Microsoft.CodeAnalysis.BraceMatching;
using Microsoft.CodeAnalysis.CSharp.Extensions;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Host.Mef;
using Microsoft.CodeAnalysis.Text;
 
namespace Microsoft.CodeAnalysis.CSharp.BraceMatching;
 
[ExportBraceMatcher(LanguageNames.CSharp), Shared]
internal class CSharpDirectiveTriviaBraceMatcher : AbstractDirectiveTriviaBraceMatcher<DirectiveTriviaSyntax,
    IfDirectiveTriviaSyntax, ElifDirectiveTriviaSyntax,
    ElseDirectiveTriviaSyntax, EndIfDirectiveTriviaSyntax,
    RegionDirectiveTriviaSyntax, EndRegionDirectiveTriviaSyntax>
{
    [ImportingConstructor]
    [Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
    public CSharpDirectiveTriviaBraceMatcher()
    {
    }
 
    protected override ImmutableArray<DirectiveTriviaSyntax> GetMatchingConditionalDirectives(DirectiveTriviaSyntax directive, CancellationToken cancellationToken)
        => directive.GetMatchingConditionalDirectives(cancellationToken);
 
    protected override DirectiveTriviaSyntax? GetMatchingDirective(DirectiveTriviaSyntax directive, CancellationToken cancellationToken)
        => directive.GetMatchingDirective(cancellationToken);
 
    internal override TextSpan GetSpanForTagging(DirectiveTriviaSyntax directive)
        => TextSpan.FromBounds(directive.HashToken.SpanStart, directive.DirectiveNameToken.Span.End);
}