using System.Collections.Immutable;
using System.Diagnostics;
using Microsoft.CodeAnalysis.CSharp.Symbols;
using Microsoft.CodeAnalysis.Operations;

namespace Microsoft.CodeAnalysis.CSharp;

internal sealed class BoundFunctionPointerInvocation : BoundExpression, IBoundInvalidNode
{
	public FunctionPointerTypeSymbol FunctionPointer => (FunctionPointerTypeSymbol)InvokedExpression.Type;

	ImmutableArray<BoundNode> IBoundInvalidNode.InvalidNodeChildren => CSharpOperationFactory.CreateInvalidChildrenFromArgumentsExpression(InvokedExpression, Arguments);

	protected override ImmutableArray<BoundNode?> Children => StaticCast<BoundNode>.From<BoundNode>(((IBoundInvalidNode)this).InvalidNodeChildren);

	public new TypeSymbol Type => base.Type;

	public BoundExpression InvokedExpression { get; }

	public ImmutableArray<BoundExpression> Arguments { get; }

	public ImmutableArray<RefKind> ArgumentRefKindsOpt { get; }

	public override LookupResultKind ResultKind { get; }

	public BoundFunctionPointerInvocation(SyntaxNode syntax, BoundExpression invokedExpression, ImmutableArray<BoundExpression> arguments, ImmutableArray<RefKind> argumentRefKindsOpt, LookupResultKind resultKind, TypeSymbol type, bool hasErrors = false)
		: base(BoundKind.FunctionPointerInvocation, syntax, type, hasErrors || invokedExpression.HasErrors() || arguments.HasErrors())
	{
		InvokedExpression = invokedExpression;
		Arguments = arguments;
		ArgumentRefKindsOpt = argumentRefKindsOpt;
		ResultKind = resultKind;
	}

	[DebuggerStepThrough]
	public override BoundNode? Accept(BoundTreeVisitor visitor)
	{
		return visitor.VisitFunctionPointerInvocation(this);
	}

	public BoundFunctionPointerInvocation Update(BoundExpression invokedExpression, ImmutableArray<BoundExpression> arguments, ImmutableArray<RefKind> argumentRefKindsOpt, LookupResultKind resultKind, TypeSymbol type)
	{
		if (invokedExpression != InvokedExpression || arguments != Arguments || argumentRefKindsOpt != ArgumentRefKindsOpt || resultKind != ResultKind || !TypeSymbol.Equals(type, Type, (TypeCompareKind)0))
		{
			BoundFunctionPointerInvocation boundFunctionPointerInvocation = new BoundFunctionPointerInvocation(Syntax, invokedExpression, arguments, argumentRefKindsOpt, resultKind, type, base.HasErrors);
			boundFunctionPointerInvocation.CopyAttributes(this);
			return boundFunctionPointerInvocation;
		}
		return this;
	}
}