using System;
using System.Collections.Generic;
using Microsoft.CodeAnalysis.Syntax.InternalSyntax;
using Roslyn.Utilities;

namespace Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax;

internal sealed class AnonymousMethodExpressionSyntax : AnonymousFunctionExpressionSyntax
{
	internal readonly GreenNode? modifiers;

	internal readonly SyntaxToken delegateKeyword;

	internal readonly ParameterListSyntax? parameterList;

	internal readonly BlockSyntax block;

	internal readonly ExpressionSyntax? expressionBody;

	public override SyntaxList<SyntaxToken> Modifiers => new SyntaxList<SyntaxToken>(modifiers);

	public SyntaxToken DelegateKeyword => delegateKeyword;

	public ParameterListSyntax? ParameterList => parameterList;

	public override BlockSyntax Block => block;

	public override ExpressionSyntax? ExpressionBody => expressionBody;

	internal AnonymousMethodExpressionSyntax(SyntaxKind kind, GreenNode? modifiers, SyntaxToken delegateKeyword, ParameterListSyntax? parameterList, BlockSyntax block, ExpressionSyntax? expressionBody, DiagnosticInfo[]? diagnostics, SyntaxAnnotation[]? annotations)
		: base(kind, diagnostics, annotations)
	{
		((GreenNode)this).SlotCount = 5;
		if (modifiers != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth(modifiers);
			this.modifiers = modifiers;
		}
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)delegateKeyword);
		this.delegateKeyword = delegateKeyword;
		if (parameterList != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)parameterList);
			this.parameterList = parameterList;
		}
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)block);
		this.block = block;
		if (expressionBody != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)expressionBody);
			this.expressionBody = expressionBody;
		}
	}

	internal AnonymousMethodExpressionSyntax(SyntaxKind kind, GreenNode? modifiers, SyntaxToken delegateKeyword, ParameterListSyntax? parameterList, BlockSyntax block, ExpressionSyntax? expressionBody, SyntaxFactoryContext context)
		: base(kind)
	{
		SetFactoryContext(context);
		((GreenNode)this).SlotCount = 5;
		if (modifiers != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth(modifiers);
			this.modifiers = modifiers;
		}
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)delegateKeyword);
		this.delegateKeyword = delegateKeyword;
		if (parameterList != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)parameterList);
			this.parameterList = parameterList;
		}
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)block);
		this.block = block;
		if (expressionBody != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)expressionBody);
			this.expressionBody = expressionBody;
		}
	}

	internal AnonymousMethodExpressionSyntax(SyntaxKind kind, GreenNode? modifiers, SyntaxToken delegateKeyword, ParameterListSyntax? parameterList, BlockSyntax block, ExpressionSyntax? expressionBody)
		: base(kind)
	{
		((GreenNode)this).SlotCount = 5;
		if (modifiers != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth(modifiers);
			this.modifiers = modifiers;
		}
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)delegateKeyword);
		this.delegateKeyword = delegateKeyword;
		if (parameterList != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)parameterList);
			this.parameterList = parameterList;
		}
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)block);
		this.block = block;
		if (expressionBody != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)expressionBody);
			this.expressionBody = expressionBody;
		}
	}

	internal override GreenNode? GetSlot(int index)
	{
		return (GreenNode?)(index switch
		{
			0 => modifiers, 
			1 => delegateKeyword, 
			2 => parameterList, 
			3 => block, 
			4 => expressionBody, 
			_ => null, 
		});
	}

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

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

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

	public AnonymousMethodExpressionSyntax Update(SyntaxList<SyntaxToken> modifiers, SyntaxToken delegateKeyword, ParameterListSyntax parameterList, BlockSyntax block, ExpressionSyntax expressionBody)
	{
		//IL_0000: Unknown result type (might be due to invalid IL or missing references)
		//IL_0002: Unknown result type (might be due to invalid IL or missing references)
		//IL_0034: Unknown result type (might be due to invalid IL or missing references)
		if (modifiers != Modifiers || delegateKeyword != DelegateKeyword || parameterList != ParameterList || block != Block || expressionBody != ExpressionBody)
		{
			AnonymousMethodExpressionSyntax anonymousMethodExpressionSyntax = SyntaxFactory.AnonymousMethodExpression(modifiers, delegateKeyword, parameterList, block, expressionBody);
			DiagnosticInfo[] diagnostics = ((GreenNode)this).GetDiagnostics();
			if (diagnostics != null && diagnostics.Length != 0)
			{
				anonymousMethodExpressionSyntax = GreenNodeExtensions.WithDiagnosticsGreen<AnonymousMethodExpressionSyntax>(anonymousMethodExpressionSyntax, diagnostics);
			}
			SyntaxAnnotation[] annotations = ((GreenNode)this).GetAnnotations();
			if (annotations != null && annotations.Length != 0)
			{
				anonymousMethodExpressionSyntax = GreenNodeExtensions.WithAnnotationsGreen<AnonymousMethodExpressionSyntax>(anonymousMethodExpressionSyntax, (IEnumerable<SyntaxAnnotation>)annotations);
			}
			return anonymousMethodExpressionSyntax;
		}
		return this;
	}

	internal override GreenNode SetDiagnostics(DiagnosticInfo[]? diagnostics)
	{
		return (GreenNode)(object)new AnonymousMethodExpressionSyntax(base.Kind, modifiers, delegateKeyword, parameterList, block, expressionBody, diagnostics, ((GreenNode)this).GetAnnotations());
	}

	internal override GreenNode SetAnnotations(SyntaxAnnotation[]? annotations)
	{
		return (GreenNode)(object)new AnonymousMethodExpressionSyntax(base.Kind, modifiers, delegateKeyword, parameterList, block, expressionBody, ((GreenNode)this).GetDiagnostics(), annotations);
	}

	internal AnonymousMethodExpressionSyntax(ObjectReader reader)
		: base(reader)
	{
		//IL_0014: Unknown result type (might be due to invalid IL or missing references)
		//IL_001a: Expected O, but got Unknown
		((GreenNode)this).SlotCount = 5;
		GreenNode val = (GreenNode)reader.ReadValue();
		if (val != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth(val);
			modifiers = val;
		}
		SyntaxToken syntaxToken = (SyntaxToken)reader.ReadValue();
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)syntaxToken);
		delegateKeyword = syntaxToken;
		ParameterListSyntax parameterListSyntax = (ParameterListSyntax)reader.ReadValue();
		if (parameterListSyntax != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)parameterListSyntax);
			parameterList = parameterListSyntax;
		}
		BlockSyntax blockSyntax = (BlockSyntax)reader.ReadValue();
		((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)blockSyntax);
		block = blockSyntax;
		ExpressionSyntax expressionSyntax = (ExpressionSyntax)reader.ReadValue();
		if (expressionSyntax != null)
		{
			((GreenNode)this).AdjustFlagsAndWidth((GreenNode)(object)expressionSyntax);
			expressionBody = expressionSyntax;
		}
	}

	internal override void WriteTo(ObjectWriter writer)
	{
		((GreenNode)this).WriteTo(writer);
		writer.WriteValue((IObjectWritable)(object)modifiers);
		writer.WriteValue((IObjectWritable)(object)delegateKeyword);
		writer.WriteValue((IObjectWritable)(object)parameterList);
		writer.WriteValue((IObjectWritable)(object)block);
		writer.WriteValue((IObjectWritable)(object)expressionBody);
	}

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