using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace StgSharp.Script.Express
{
    [Flags]
    public enum ExpTokenFlag : long
    {
        //string as name of non-builtin variables
        None = 0,
        Name_Element = 1,
        Name_Param = 2,
        Name_Block = 4,
        Name_Keyword = 8,
        Name_Operator = 16,
        Name_Any = Name_Block | Name_Element | Name_Keyword | Name_Param | Name_Operator,
        //any type of collections, also has NAME flag
        Collection_Set = 32,
        Collection_Bag = 64,
        Collection_Array = 128,
        Collection_List = 256,
        Collection_Any = Collection_Set | Collection_Bag | Collection_Array | Collection_List,
        //the variable is type of element, both builtin and non-builtin has this flag
        Element_Const = 512,
        Element_Entity = 1024,
        Element_Type = 2048,
        Element_Rule = 4096,
        Element_Function = 8192,
        Element_Any = Element_Entity | Element_Const | Element_Function | Element_Rule | Element_Type,
        //variable is one of these builtin type
        BuiltinType_Int = 16384,
        BuiltinType_Float = 32768,
        BuiltinType_String = 65536,
        BuiltinType_Boolean = 0x2000,
        BuiltinType_Binary = 0x4000,
        BuiltinType_Logic = 0x8000,
        BuiltinType_Number = BuiltinType_Float | BuiltinType_Int,
        BuiltinType_Any = BuiltinType_Int | BuiltinType_Float | BuiltinType_String | BuiltinType_Boolean | BuiltinType_Binary | BuiltinType_Logic,
        //the token is root of a branch
        Branch_If = 0x1_000,
        Branch_Switch = 0x2_0000,
        Branch_Repeat = 0x4_0000,
        Branch_Any = Branch_If | Branch_Repeat | Branch_Switch,
        //the token is one of separators
        Separator_Inline = 0x8_0000,        //, or sth else
        Separator_Line = 0x10_0000,         //; or eth else
        Separator_Block = 0x20_0000,        //{}or sth else
        Separator_Range = 0x40_0000,        //()or sth else
        Separator_Any = Separator_Inline | Separator_Line | Separator_Block | Separator_Range,
        }
}