Argument.cs

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using System;

namespace Mercury.Interpreting
{
//=============================================================================
//  Argument
//=============================================================================

    [Flags]
    public enum ArgumentType
    {
        None         =   0,

        //--[  Basic types  ]--------------------------------------------------

        Integer      =   1,
        Real         =   2,
        Boolean      =   4,
        String       =   8,
        Symbol       =  16,
        Tree         =  32,
        TValue       =  64,

        //--[  Type masks  ]---------------------------------------------------

        Primitive    = Integer   | Real         | String | Boolean,
        ParserEntity = Symbol    | Tree,
        Any          = Primitive | ParserEntity | TValue,

        //--[  Special flags  ]------------------------------------------------

        Null         = 128,
        Lazy         = 256  | Null,
        Flags        = Null | Lazy,
        
    }

    public class Argument
    {
        //--[  Internal  ]-----------------------------------------------------

        internal virtual object Data { get; set; }

        internal Argument(ArgumentType type, object value)
        {
            Type = type;
            Data = value;
        }

        //--[  Properties  ]---------------------------------------------------

        public virtual ArgumentType Type { get; internal set; }

        public dynamic Value { get { return Data; } }
    }
}