using System;

namespace NTERA.EmuEra.Game.EraEmu.GameData.Expression
{
	internal abstract class IOperandTerm
	{
        public IOperandTerm(Type t)
        {
            type = t;
        }
		public Type GetOperandType()
        {
            return type;
        }

        public virtual Int64 GetIntValue(ExpressionMediator exm)
        {
            return 0;
        }
        public virtual string GetStrValue(ExpressionMediator exm, bool translate=false)
        {
            return "";
        } 
        public virtual SingleTerm GetValue(ExpressionMediator exm, bool tryTranslate =false)
        {
	        if (type == typeof(Int64))
                return new SingleTerm(0);
	        return new SingleTerm("");
        }
        public bool IsInteger => type == typeof(Int64);

		public bool IsString => type == typeof(string);
		readonly Type type;
        
		/// <summary>
		/// 定数を解体して可能ならSingleTerm化する
		/// defineの都合上、2回以上呼ばれる可能性がある
		/// </summary>
        public virtual IOperandTerm Restructure(ExpressionMediator exm, bool tryTranslate=false)
        {
			return this;
        }
	}
}