#region License
/* 
 * Copyright (C) 1999-2022 John Källén.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 */
#endregion

using Reko.Core;
using Reko.Core.Machine;
using Reko.Core.Types;
using System.Collections.Generic;
using System.Xml.Schema;

namespace Reko.Arch.Avr.Avr32
{
    /// <summary>
    /// Combines a register with an immedate using an operator
    /// </summary>
    public class RegisterImmediateOperand : AbstractMachineOperand
    {
        private static readonly Dictionary<Mnemonic, string> mpMnemonicToString = new Dictionary<Mnemonic, string>
        {
            { Mnemonic.mov, "=" },
            { Mnemonic.lsl, "<<" },
            { Mnemonic.lsr, ">>" }
        };

        public RegisterStorage Register { get; }
        public Mnemonic Mnemonic { get; }
        public int Value { get; }

        public RegisterImmediateOperand(RegisterStorage registerStorage, Mnemonic mnemonic,  int value)
            : base(PrimitiveType.Word32)
        {
            this.Register = registerStorage;
            this.Mnemonic = mnemonic;
            this.Value = value;
        }

        protected override void DoRender(MachineInstructionRenderer renderer, MachineInstructionRendererOptions options)
        {
            if (Value == 0 && (Mnemonic == Mnemonic.lsl || Mnemonic == Mnemonic.lsr))
            {
                renderer.WriteString(Register.Name);
            }
            else
            {
                renderer.WriteFormat("{0}{1}{2}", Register.Name, mpMnemonicToString[Mnemonic], Value);
            }
        }
    }
}