// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System;
using System.Diagnostics;

using Internal.Text;
using Internal.ReadyToRunConstants;

namespace ILCompiler.DependencyAnalysis.ReadyToRun
{
    public class ReadyToRunHelperSignature : Signature
    {
        private readonly ReadyToRunHelper _helperID;

        public ReadyToRunHelperSignature(ReadyToRunHelper helper)
        {
            Debug.Assert(helper < ReadyToRunHelper.FirstFakeHelper);
            _helperID = helper;
        }

        public override int ClassCode => 208107954;

        public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
        {
            ObjectDataSignatureBuilder builder = new ObjectDataSignatureBuilder(factory, relocsOnly);
            builder.AddSymbol(this);
            builder.EmitByte((byte)ReadyToRunFixupKind.Helper);
            builder.EmitUInt((uint)_helperID);
            return builder.ToObjectData();
        }

        public override void AppendMangledName(NameMangler nameMangler, Utf8StringBuilder sb)
        {
            sb.Append(nameMangler.CompilationUnitPrefix);
            sb.Append("ReadyToRunHelper_"u8);
            sb.Append(_helperID.ToString());
        }

        public override int CompareToImpl(ISortableNode other, CompilerComparer comparer)
        {
            return _helperID.CompareTo(((ReadyToRunHelperSignature) other)._helperID);
        }
    }
}