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CompilationUnitSyntax.cs
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CompilationUnitSyntax.cs
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// 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.
#nullable enable
using System;
using System.Collections.Generic;
namespace Microsoft.CodeAnalysis.CSharp.Syntax
{
public sealed partial class CompilationUnitSyntax : CSharpSyntaxNode, ICompilationUnitSyntax
{
/// <summary>
/// Returns #r directives specified in the compilation.
/// </summary>
public IList<ReferenceDirectiveTriviaSyntax> GetReferenceDirectives()
{
return GetReferenceDirectives(null);
}
internal IList<ReferenceDirectiveTriviaSyntax> GetReferenceDirectives(Func<ReferenceDirectiveTriviaSyntax, bool>? filter)
{
// #r directives are always on the first token of the compilation unit.
var firstToken = (SyntaxNodeOrToken)this.GetFirstToken(includeZeroWidth: true);
return firstToken.GetDirectives<ReferenceDirectiveTriviaSyntax>(filter);
}
/// <summary>
/// Returns #load directives specified in the compilation.
/// </summary>
public IList<LoadDirectiveTriviaSyntax> GetLoadDirectives()
{
// #load directives are always on the first token of the compilation unit.
var firstToken = (SyntaxNodeOrToken)this.GetFirstToken(includeZeroWidth: true);
return firstToken.GetDirectives<LoadDirectiveTriviaSyntax>(filter: null);
}
internal Syntax.InternalSyntax.DirectiveStack GetConditionalDirectivesStack()
{
IEnumerable<DirectiveTriviaSyntax> directives = this.GetDirectives(filter: IsActiveConditionalDirective);
var directiveStack = Syntax.InternalSyntax.DirectiveStack.Empty;
foreach (DirectiveTriviaSyntax directive in directives)
{
var internalDirective = (Syntax.InternalSyntax.DirectiveTriviaSyntax)directive.Green;
directiveStack = internalDirective.ApplyDirectives(directiveStack);
}
return directiveStack;
}
private static bool IsActiveConditionalDirective(DirectiveTriviaSyntax directive)
{
switch (directive.Kind())
{
case SyntaxKind.DefineDirectiveTrivia:
return ((DefineDirectiveTriviaSyntax)directive).IsActive;
case SyntaxKind.UndefDirectiveTrivia:
return ((UndefDirectiveTriviaSyntax)directive).IsActive;
default:
return false;
}
}
}
}