module/lua/ltm.h

   1 /*
   2 ** $Id: ltm.h,v 2.11.1.1 2013/04/12 18:48:47 roberto Exp $
   3 ** Tag methods
   4 ** See Copyright Notice in lua.h
   5 */
   6
   7 #ifndef ltm_h
   8 #define ltm_h
   9
  10
  11 #include "lobject.h"
  12
  13
  14 /*
  15 * WARNING: if you change the order of this enumeration,
  16 * grep "ORDER TM"
  17 */
  18 typedef enum {
  19   TM_INDEX,
  20   TM_NEWINDEX,
  21   TM_GC,
  22   TM_MODE,
  23   TM_LEN,
  24   TM_EQ,  /* last tag method with `fast' access */
  25   TM_ADD,
  26   TM_SUB,
  27   TM_MUL,
  28   TM_DIV,
  29   TM_MOD,
  30   TM_POW,
  31   TM_UNM,
  32   TM_LT,
  33   TM_LE,
  34   TM_CONCAT,
  35   TM_CALL,
  36   TM_N          /* number of elements in the enum */
  37 } TMS;
  38
  39
  40
  41 #define gfasttm(g,et,e) ((et) == NULL ? NULL : \
  42   ((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e]))
  43
  44 #define fasttm(l,et,e)  gfasttm(G(l), et, e)
  45
  46 #define ttypename(x)    luaT_typenames_[(x) + 1]
  47 #define objtypename(x)  ttypename(ttypenv(x))
  48
  49 LUAI_DDEC const char *const luaT_typenames_[LUA_TOTALTAGS];
  50
  51
  52 LUAI_FUNC const TValue *luaT_gettm (Table *events, TMS event, TString *ename);
  53 LUAI_FUNC const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o,
  54                                                        TMS event);
  55 LUAI_FUNC void luaT_init (lua_State *L);
  56
  57 #endif