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

namespace Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax;

internal sealed class VariableDeclaratorSyntax : CSharpSyntaxNode
{
	internal readonly SyntaxToken identifier;

	internal readonly BracketedArgumentListSyntax? argumentList;

	internal readonly EqualsValueClauseSyntax? initializer;

	public SyntaxToken Identifier => identifier;

	public BracketedArgumentListSyntax? ArgumentList => argumentList;

	public EqualsValueClauseSyntax? Initializer => initializer;

	internal VariableDeclaratorSyntax(SyntaxKind kind, SyntaxToken identifier, BracketedArgumentListSyntax? argumentList, EqualsValueClauseSyntax? initializer, DiagnosticInfo[]? diagnostics, SyntaxAnnotation[]? annotations)
		: base(kind, diagnostics, annotations)
	{
		((GreenNode)this).SlotCount = 3;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)identifier);
		this.identifier = identifier;
		if (argumentList != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)argumentList);
			this.argumentList = argumentList;
		}
		if (initializer != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)initializer);
			this.initializer = initializer;
		}
	}

	internal VariableDeclaratorSyntax(SyntaxKind kind, SyntaxToken identifier, BracketedArgumentListSyntax? argumentList, EqualsValueClauseSyntax? initializer, SyntaxFactoryContext context)
		: base(kind)
	{
		SetFactoryContext(context);
		((GreenNode)this).SlotCount = 3;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)identifier);
		this.identifier = identifier;
		if (argumentList != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)argumentList);
			this.argumentList = argumentList;
		}
		if (initializer != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)initializer);
			this.initializer = initializer;
		}
	}

	internal VariableDeclaratorSyntax(SyntaxKind kind, SyntaxToken identifier, BracketedArgumentListSyntax? argumentList, EqualsValueClauseSyntax? initializer)
		: base(kind)
	{
		((GreenNode)this).SlotCount = 3;
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)identifier);
		this.identifier = identifier;
		if (argumentList != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)argumentList);
			this.argumentList = argumentList;
		}
		if (initializer != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)initializer);
			this.initializer = initializer;
		}
	}

	internal override GreenNode? GetSlot(int index)
	{
		return (GreenNode?)(index switch
		{
			0 => identifier, 
			1 => argumentList, 
			2 => initializer, 
			_ => null, 
		});
	}

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

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

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

	public VariableDeclaratorSyntax Update(SyntaxToken identifier, BracketedArgumentListSyntax argumentList, EqualsValueClauseSyntax initializer)
	{
		if (identifier != Identifier || argumentList != ArgumentList || initializer != Initializer)
		{
			VariableDeclaratorSyntax variableDeclaratorSyntax = SyntaxFactory.VariableDeclarator(identifier, argumentList, initializer);
			DiagnosticInfo[] diagnostics = ((GreenNode)this).GetDiagnostics();
			if (diagnostics != null && diagnostics.Length != 0)
			{
				variableDeclaratorSyntax = GreenNodeExtensions.WithDiagnosticsGreen<VariableDeclaratorSyntax>(variableDeclaratorSyntax, diagnostics);
			}
			SyntaxAnnotation[] annotations = ((GreenNode)this).GetAnnotations();
			if (annotations != null && annotations.Length != 0)
			{
				variableDeclaratorSyntax = GreenNodeExtensions.WithAnnotationsGreen<VariableDeclaratorSyntax>(variableDeclaratorSyntax, (IEnumerable<SyntaxAnnotation>)annotations);
			}
			return variableDeclaratorSyntax;
		}
		return this;
	}

	internal override GreenNode SetDiagnostics(DiagnosticInfo[]? diagnostics)
	{
		return (GreenNode)(object)new VariableDeclaratorSyntax(base.Kind, identifier, argumentList, initializer, diagnostics, ((GreenNode)this).GetAnnotations());
	}

	internal override GreenNode SetAnnotations(SyntaxAnnotation[]? annotations)
	{
		return (GreenNode)(object)new VariableDeclaratorSyntax(base.Kind, identifier, argumentList, initializer, ((GreenNode)this).GetDiagnostics(), annotations);
	}

	internal VariableDeclaratorSyntax(ObjectReader reader)
		: base(reader)
	{
		((GreenNode)this).SlotCount = 3;
		SyntaxToken syntaxToken = (SyntaxToken)reader.ReadValue();
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)syntaxToken);
		identifier = syntaxToken;
		BracketedArgumentListSyntax bracketedArgumentListSyntax = (BracketedArgumentListSyntax)reader.ReadValue();
		if (bracketedArgumentListSyntax != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)bracketedArgumentListSyntax);
			argumentList = bracketedArgumentListSyntax;
		}
		EqualsValueClauseSyntax equalsValueClauseSyntax = (EqualsValueClauseSyntax)reader.ReadValue();
		if (equalsValueClauseSyntax != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)equalsValueClauseSyntax);
			initializer = equalsValueClauseSyntax;
		}
	}

	internal override void WriteTo(ObjectWriter writer)
	{
		((GreenNode)this).WriteTo(writer);
		writer.WriteValue((IObjectWritable)(object)identifier);
		writer.WriteValue((IObjectWritable)(object)argumentList);
		writer.WriteValue((IObjectWritable)(object)initializer);
	}

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