using System;
using System.Collections.Generic;
using Roslyn.Utilities;

namespace Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax;

internal sealed class ExternAliasDirectiveSyntax : CSharpSyntaxNode
{
	internal readonly SyntaxToken externKeyword;

	internal readonly SyntaxToken aliasKeyword;

	internal readonly SyntaxToken identifier;

	internal readonly SyntaxToken semicolonToken;

	public SyntaxToken ExternKeyword => externKeyword;

	public SyntaxToken AliasKeyword => aliasKeyword;

	public SyntaxToken Identifier => identifier;

	public SyntaxToken SemicolonToken => semicolonToken;

	internal ExternAliasDirectiveSyntax(SyntaxKind kind, SyntaxToken externKeyword, SyntaxToken aliasKeyword, SyntaxToken identifier, SyntaxToken semicolonToken, DiagnosticInfo[]? diagnostics, SyntaxAnnotation[]? annotations)
		: base(kind, diagnostics, annotations)
	{
		((GreenNode)this).SlotCount = 4;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)externKeyword);
		this.externKeyword = externKeyword;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)aliasKeyword);
		this.aliasKeyword = aliasKeyword;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)identifier);
		this.identifier = identifier;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)semicolonToken);
		this.semicolonToken = semicolonToken;
	}

	internal ExternAliasDirectiveSyntax(SyntaxKind kind, SyntaxToken externKeyword, SyntaxToken aliasKeyword, SyntaxToken identifier, SyntaxToken semicolonToken, SyntaxFactoryContext context)
		: base(kind)
	{
		SetFactoryContext(context);
		((GreenNode)this).SlotCount = 4;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)externKeyword);
		this.externKeyword = externKeyword;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)aliasKeyword);
		this.aliasKeyword = aliasKeyword;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)identifier);
		this.identifier = identifier;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)semicolonToken);
		this.semicolonToken = semicolonToken;
	}

	internal ExternAliasDirectiveSyntax(SyntaxKind kind, SyntaxToken externKeyword, SyntaxToken aliasKeyword, SyntaxToken identifier, SyntaxToken semicolonToken)
		: base(kind)
	{
		((GreenNode)this).SlotCount = 4;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)externKeyword);
		this.externKeyword = externKeyword;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)aliasKeyword);
		this.aliasKeyword = aliasKeyword;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)identifier);
		this.identifier = identifier;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)semicolonToken);
		this.semicolonToken = semicolonToken;
	}

	internal override GreenNode? GetSlot(int index)
	{
		return (GreenNode?)(index switch
		{
			0 => externKeyword, 
			1 => aliasKeyword, 
			2 => identifier, 
			3 => semicolonToken, 
			_ => null, 
		});
	}

	internal override SyntaxNode CreateRed(SyntaxNode? parent, int position)
	{
		return (SyntaxNode)(object)new Microsoft.CodeAnalysis.CSharp.Syntax.ExternAliasDirectiveSyntax(this, parent, position);
	}

	public override void Accept(CSharpSyntaxVisitor visitor)
	{
		visitor.VisitExternAliasDirective(this);
	}

	public override TResult Accept<TResult>(CSharpSyntaxVisitor<TResult> visitor)
	{
		return visitor.VisitExternAliasDirective(this);
	}

	public ExternAliasDirectiveSyntax Update(SyntaxToken externKeyword, SyntaxToken aliasKeyword, SyntaxToken identifier, SyntaxToken semicolonToken)
	{
		if (externKeyword != ExternKeyword || aliasKeyword != AliasKeyword || identifier != Identifier || semicolonToken != SemicolonToken)
		{
			ExternAliasDirectiveSyntax externAliasDirectiveSyntax = SyntaxFactory.ExternAliasDirective(externKeyword, aliasKeyword, identifier, semicolonToken);
			DiagnosticInfo[] diagnostics = ((GreenNode)this).GetDiagnostics();
			if (diagnostics != null && diagnostics.Length != 0)
			{
				externAliasDirectiveSyntax = GreenNodeExtensions.WithDiagnosticsGreen<ExternAliasDirectiveSyntax>(externAliasDirectiveSyntax, diagnostics);
			}
			SyntaxAnnotation[] annotations = ((GreenNode)this).GetAnnotations();
			if (annotations != null && annotations.Length != 0)
			{
				externAliasDirectiveSyntax = GreenNodeExtensions.WithAnnotationsGreen<ExternAliasDirectiveSyntax>(externAliasDirectiveSyntax, (IEnumerable<SyntaxAnnotation>)annotations);
			}
			return externAliasDirectiveSyntax;
		}
		return this;
	}

	internal override GreenNode SetDiagnostics(DiagnosticInfo[]? diagnostics)
	{
		return (GreenNode)(object)new ExternAliasDirectiveSyntax(base.Kind, externKeyword, aliasKeyword, identifier, semicolonToken, diagnostics, ((GreenNode)this).GetAnnotations());
	}

	internal override GreenNode SetAnnotations(SyntaxAnnotation[]? annotations)
	{
		return (GreenNode)(object)new ExternAliasDirectiveSyntax(base.Kind, externKeyword, aliasKeyword, identifier, semicolonToken, ((GreenNode)this).GetDiagnostics(), annotations);
	}

	internal ExternAliasDirectiveSyntax(ObjectReader reader)
		: base(reader)
	{
		((GreenNode)this).SlotCount = 4;
		SyntaxToken syntaxToken = (SyntaxToken)reader.ReadValue();
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)syntaxToken);
		externKeyword = syntaxToken;
		SyntaxToken syntaxToken2 = (SyntaxToken)reader.ReadValue();
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)syntaxToken2);
		aliasKeyword = syntaxToken2;
		SyntaxToken syntaxToken3 = (SyntaxToken)reader.ReadValue();
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)syntaxToken3);
		identifier = syntaxToken3;
		SyntaxToken syntaxToken4 = (SyntaxToken)reader.ReadValue();
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)syntaxToken4);
		semicolonToken = syntaxToken4;
	}

	internal override void WriteTo(ObjectWriter writer)
	{
		((GreenNode)this).WriteTo(writer);
		writer.WriteValue((IObjectWritable)(object)externKeyword);
		writer.WriteValue((IObjectWritable)(object)aliasKeyword);
		writer.WriteValue((IObjectWritable)(object)identifier);
		writer.WriteValue((IObjectWritable)(object)semicolonToken);
	}

	static ExternAliasDirectiveSyntax()
	{
		ObjectBinder.RegisterTypeReader(typeof(ExternAliasDirectiveSyntax), (Func<ObjectReader, IObjectWritable>)((ObjectReader r) => (IObjectWritable)(object)new ExternAliasDirectiveSyntax(r)));
	}
}