// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

#nullable disable

using Microsoft.CodeAnalysis.Syntax.InternalSyntax;

namespace Microsoft.CodeAnalysis.CSharp.Syntax.InternalSyntax
{
    internal static class CSharpSyntaxNodeCache
    {
        internal static GreenNode TryGetNode(int kind, GreenNode child1, SyntaxFactoryContext context, out int hash)
        {
            return SyntaxNodeCache.TryGetNode(kind, child1, GetNodeFlags(context), out hash);
        }

        internal static GreenNode TryGetNode(int kind, GreenNode child1, GreenNode child2, SyntaxFactoryContext context, out int hash)
        {
            return SyntaxNodeCache.TryGetNode(kind, child1, child2, GetNodeFlags(context), out hash);
        }

        internal static GreenNode TryGetNode(int kind, GreenNode child1, GreenNode child2, GreenNode child3, SyntaxFactoryContext context, out int hash)
        {
            return SyntaxNodeCache.TryGetNode(kind, child1, child2, child3, GetNodeFlags(context), out hash);
        }

        private static GreenNode.NodeFlags GetNodeFlags(SyntaxFactoryContext context)
        {
            var flags = SyntaxNodeCache.GetDefaultNodeFlags();

            if (context.IsInAsync)
            {
                flags |= GreenNode.NodeFlags.FactoryContextIsInAsync;
            }

            if (context.IsInQuery)
            {
                flags |= GreenNode.NodeFlags.FactoryContextIsInQuery;
            }

            if (context.IsInFieldKeywordContext)
            {
                flags |= GreenNode.NodeFlags.FactoryContextIsInFieldKeywordContext;
            }

            return flags;
        }
    }
}