ltm.h File Reference

#include "lobject.h"

Go to the source code of this file.

Macros
#define	gfasttm(g, et, e)
#define	fasttm(l, et, e)   gfasttm(G(l), et, e)

Enumerations
enum	TMS {   TM_INDEX , TM_NEWINDEX , TM_GC , TM_MODE ,   TM_EQ , TM_ADD , TM_SUB , TM_MUL ,   TM_DIV , TM_MOD , TM_POW , TM_UNM ,   TM_LEN , TM_LT , TM_LE , TM_CONCAT ,   TM_CALL , TM_N }

Functions
LUAI_FUNC const TValue *	luaT_gettm (Table *events, TMS event, TString *ename)
LUAI_FUNC const TValue *	luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event)
LUAI_FUNC void	luaT_init (lua_State *L)

Variables
LUAI_DATA const char *const	luaT_typenames []

Macro Definition Documentation

fasttm

#define fasttm	(		l,
			et,
			e )   gfasttm(G(l), et, e)

Definition at line 44 of file lua-5.1.5/src/ltm.h.

Referenced by GCTM(), get_compTM(), get_equalTM(), luaC_separateudata(), luaV_equalobj(), luaV_finishget(), luaV_finishset(), luaV_finishset(), luaV_gettable(), luaV_objlen(), and luaV_settable().

gfasttm

#define gfasttm	(		g,
			et,
			e )

Value:

  ((et) == NULL ? NULL : \
  ((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e]))

Definition at line 41 of file lua-5.1.5/src/ltm.h.

#define gfasttm(g,et,e) ((et) == NULL ? NULL : \
  ((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e]))

Referenced by luaC_checkfinalizer(), traversetable(), traversetable(), traversetable(), and traversetable().

Enumeration Type Documentation

TMS

enum TMS

Enumerator
TM_INDEX
TM_NEWINDEX
TM_GC
TM_MODE
TM_EQ
TM_ADD
TM_SUB
TM_MUL
TM_DIV
TM_MOD
TM_POW
TM_UNM
TM_LEN
TM_LT
TM_LE
TM_CONCAT
TM_CALL
TM_N

Definition at line 18 of file lua-5.1.5/src/ltm.h.

             {
  TM_INDEX,
  TM_NEWINDEX,
  TM_GC,
  TM_MODE,
  TM_EQ,  /* last tag method with `fast' access */
  TM_ADD,
  TM_SUB,
  TM_MUL,
  TM_DIV,
  TM_MOD,
  TM_POW,
  TM_UNM,
  TM_LEN,
  TM_LT,
  TM_LE,
  TM_CONCAT,
  TM_CALL,
  TM_N      /* number of elements in the enum */
} TMS;

Function Documentation

luaT_gettm()

LUAI_FUNC const TValue * luaT_gettm	(	Table *	events,
		TMS	event,
		TString *	ename )

Definition at line 50 of file lua-5.1.5/src/ltm.c.

                                                                    {
  const TValue *tm = luaH_getstr(events, ename);
  lua_assert(event <= TM_EQ);
  if (ttisnil(tm)) {  /* no tag method? */
    events->flags |= cast_byte(1u<<event);  /* cache this fact */
    return NULL;
  }
  else return tm;
}

luaT_gettmbyobj()

LUAI_FUNC const TValue * luaT_gettmbyobj	(	lua_State *	L,
		const TValue *	o,
		TMS	event )

Definition at line 61 of file lua-5.1.5/src/ltm.c.

                                                                         {
  Table *mt;
  switch (ttype(o)) {
    case LUA_TTABLE:
      mt = hvalue(o)->metatable;
      break;
    case LUA_TUSERDATA:
      mt = uvalue(o)->metatable;
      break;
    default:
      mt = G(L)->mt[ttype(o)];
  }
  return (mt ? luaH_getstr(mt, G(L)->tmname[event]) : luaO_nilobject);
}

luaT_init()

LUAI_FUNC void luaT_init

(

lua_State *

L

)

Definition at line 30 of file lua-5.1.5/src/ltm.c.

                              {
  static const char *const luaT_eventname[] = {  /* ORDER TM */
    "__index", "__newindex",
    "__gc", "__mode", "__eq",
    "__add", "__sub", "__mul", "__div", "__mod",
    "__pow", "__unm", "__len", "__lt", "__le",
    "__concat", "__call"
  };
  int i;
  for (i=0; i<TM_N; i++) {
    G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
    luaS_fix(G(L)->tmname[i]);  /* never collect these names */
  }
}

Variable Documentation

luaT_typenames

LUAI_DATA const char* const luaT_typenames[]

Definition at line 46 of file lua-5.1.5/src/ltm.h.