mirror of
https://github.com/Leonmmcoset/CMLeonOS.git
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118 lines
2.7 KiB
C#
118 lines
2.7 KiB
C#
// The CMLeonOS Project (https://github.com/Leonmmcoset/CMLeonOS)
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// Copyright (C) 2025-present LeonOS 2 Developer Team
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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namespace UniLua
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{
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// grep `NoTagMethodFlags' if num of TMS >= 32
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internal enum TMS
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{
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TM_INDEX,
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TM_NEWINDEX,
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TM_GC,
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TM_MODE,
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TM_LEN,
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TM_EQ,
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TM_ADD,
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TM_SUB,
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TM_MUL,
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TM_DIV,
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TM_MOD,
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TM_POW,
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TM_UNM,
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TM_LT,
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TM_LE,
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TM_CONCAT,
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TM_CALL,
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TM_N /* number of elements in the enum */
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}
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public partial class LuaState
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{
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private string GetTagMethodName( TMS tm )
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{
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switch( tm )
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{
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case TMS.TM_INDEX: return "__index";
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case TMS.TM_NEWINDEX: return "__newindex";
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case TMS.TM_GC: return "__gc";
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case TMS.TM_MODE: return "__mode";
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case TMS.TM_LEN: return "__len";
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case TMS.TM_EQ: return "__eq";
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case TMS.TM_ADD: return "__add";
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case TMS.TM_SUB: return "__sub";
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case TMS.TM_MUL: return "__mul";
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case TMS.TM_DIV: return "__div";
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case TMS.TM_MOD: return "__mod";
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case TMS.TM_POW: return "__pow";
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case TMS.TM_UNM: return "__unm";
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case TMS.TM_LT: return "__lt";
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case TMS.TM_LE: return "__le";
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case TMS.TM_CONCAT: return "__concat";
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case TMS.TM_CALL: return "__call";
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default: throw new System.NotImplementedException();
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}
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}
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private StkId T_GetTM( LuaTable mt, TMS tm )
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{
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if( mt == null )
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return null;
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var res = mt.GetStr( GetTagMethodName( tm ) );
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if(res.V.TtIsNil()) // no tag method?
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{
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// cache this fact
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mt.NoTagMethodFlags |= 1u << (int)tm;
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return null;
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}
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else
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return res;
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}
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private StkId T_GetTMByObj( ref TValue o, TMS tm )
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{
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LuaTable mt = null;
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switch( o.Tt )
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{
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case (int)LuaType.LUA_TTABLE:
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{
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var tbl = o.HValue();
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mt = tbl.MetaTable;
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break;
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}
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case (int)LuaType.LUA_TUSERDATA:
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{
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var ud = o.RawUValue();
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mt = ud.MetaTable;
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break;
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}
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default:
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{
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mt = G.MetaTables[o.Tt];
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break;
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}
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}
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return (mt != null)
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? mt.GetStr( GetTagMethodName( tm ) )
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: TheNilValue;
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}
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}
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}
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