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

namespace Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax;

internal sealed class CasePatternSwitchLabelSyntax : SwitchLabelSyntax
{
	internal readonly SyntaxToken keyword;

	internal readonly PatternSyntax pattern;

	internal readonly WhenClauseSyntax? whenClause;

	internal readonly SyntaxToken colonToken;

	public override SyntaxToken Keyword => keyword;

	public PatternSyntax Pattern => pattern;

	public WhenClauseSyntax? WhenClause => whenClause;

	public override SyntaxToken ColonToken => colonToken;

	internal CasePatternSwitchLabelSyntax(SyntaxKind kind, SyntaxToken keyword, PatternSyntax pattern, WhenClauseSyntax? whenClause, SyntaxToken colonToken, DiagnosticInfo[]? diagnostics, SyntaxAnnotation[]? annotations)
		: base(kind, diagnostics, annotations)
	{
		((GreenNode)this).SlotCount = 4;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)keyword);
		this.keyword = keyword;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)pattern);
		this.pattern = pattern;
		if (whenClause != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)whenClause);
			this.whenClause = whenClause;
		}
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)colonToken);
		this.colonToken = colonToken;
	}

	internal CasePatternSwitchLabelSyntax(SyntaxKind kind, SyntaxToken keyword, PatternSyntax pattern, WhenClauseSyntax? whenClause, SyntaxToken colonToken, SyntaxFactoryContext context)
		: base(kind)
	{
		SetFactoryContext(context);
		((GreenNode)this).SlotCount = 4;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)keyword);
		this.keyword = keyword;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)pattern);
		this.pattern = pattern;
		if (whenClause != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)whenClause);
			this.whenClause = whenClause;
		}
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)colonToken);
		this.colonToken = colonToken;
	}

	internal CasePatternSwitchLabelSyntax(SyntaxKind kind, SyntaxToken keyword, PatternSyntax pattern, WhenClauseSyntax? whenClause, SyntaxToken colonToken)
		: base(kind)
	{
		((GreenNode)this).SlotCount = 4;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)keyword);
		this.keyword = keyword;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)pattern);
		this.pattern = pattern;
		if (whenClause != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)whenClause);
			this.whenClause = whenClause;
		}
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)colonToken);
		this.colonToken = colonToken;
	}

	internal override GreenNode? GetSlot(int index)
	{
		return (GreenNode?)(index switch
		{
			0 => keyword, 
			1 => pattern, 
			2 => whenClause, 
			3 => colonToken, 
			_ => null, 
		});
	}

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

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

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

	public CasePatternSwitchLabelSyntax Update(SyntaxToken keyword, PatternSyntax pattern, WhenClauseSyntax whenClause, SyntaxToken colonToken)
	{
		if (keyword != Keyword || pattern != Pattern || whenClause != WhenClause || colonToken != ColonToken)
		{
			CasePatternSwitchLabelSyntax casePatternSwitchLabelSyntax = SyntaxFactory.CasePatternSwitchLabel(keyword, pattern, whenClause, colonToken);
			DiagnosticInfo[] diagnostics = ((GreenNode)this).GetDiagnostics();
			if (diagnostics != null && diagnostics.Length != 0)
			{
				casePatternSwitchLabelSyntax = GreenNodeExtensions.WithDiagnosticsGreen<CasePatternSwitchLabelSyntax>(casePatternSwitchLabelSyntax, diagnostics);
			}
			SyntaxAnnotation[] annotations = ((GreenNode)this).GetAnnotations();
			if (annotations != null && annotations.Length != 0)
			{
				casePatternSwitchLabelSyntax = GreenNodeExtensions.WithAnnotationsGreen<CasePatternSwitchLabelSyntax>(casePatternSwitchLabelSyntax, (IEnumerable<SyntaxAnnotation>)annotations);
			}
			return casePatternSwitchLabelSyntax;
		}
		return this;
	}

	internal override GreenNode SetDiagnostics(DiagnosticInfo[]? diagnostics)
	{
		return (GreenNode)(object)new CasePatternSwitchLabelSyntax(base.Kind, keyword, pattern, whenClause, colonToken, diagnostics, ((GreenNode)this).GetAnnotations());
	}

	internal override GreenNode SetAnnotations(SyntaxAnnotation[]? annotations)
	{
		return (GreenNode)(object)new CasePatternSwitchLabelSyntax(base.Kind, keyword, pattern, whenClause, colonToken, ((GreenNode)this).GetDiagnostics(), annotations);
	}

	internal CasePatternSwitchLabelSyntax(ObjectReader reader)
		: base(reader)
	{
		((GreenNode)this).SlotCount = 4;
		SyntaxToken syntaxToken = (SyntaxToken)reader.ReadValue();
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)syntaxToken);
		keyword = syntaxToken;
		PatternSyntax patternSyntax = (PatternSyntax)reader.ReadValue();
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)patternSyntax);
		pattern = patternSyntax;
		WhenClauseSyntax whenClauseSyntax = (WhenClauseSyntax)reader.ReadValue();
		if (whenClauseSyntax != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)whenClauseSyntax);
			whenClause = whenClauseSyntax;
		}
		SyntaxToken syntaxToken2 = (SyntaxToken)reader.ReadValue();
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)syntaxToken2);
		colonToken = syntaxToken2;
	}

	internal override void WriteTo(ObjectWriter writer)
	{
		((GreenNode)this).WriteTo(writer);
		writer.WriteValue((IObjectWritable)(object)keyword);
		writer.WriteValue((IObjectWritable)(object)pattern);
		writer.WriteValue((IObjectWritable)(object)whenClause);
		writer.WriteValue((IObjectWritable)(object)colonToken);
	}

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