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/*
** $Id: ltm.h,v 1.19 2000/12/26 18:46:09 roberto Exp roberto $
** Tag methods
** See Copyright Notice in lua.h
*/
#ifndef ltm_h
#define ltm_h
#include "lobject.h"
#include "lstate.h"
/*
* WARNING: if you change the order of this enumeration,
* grep "ORDER TM"
*/
typedef enum {
TM_GETTABLE = 0,
TM_SETTABLE,
TM_INDEX,
TM_GETGLOBAL,
TM_SETGLOBAL,
TM_ADD,
TM_SUB,
TM_MUL,
TM_DIV,
TM_POW,
TM_UNM,
TM_LT,
TM_CONCAT,
TM_GC,
TM_FUNCTION,
TM_N /* number of elements in the enum */
} TMS;
struct TM {
Closure *method[TM_N];
TString *collected; /* list of garbage-collected udata with this tag */
};
#define luaT_gettm(G,tag,event) (G->TMtable[tag].method[event])
#define luaT_gettmbyObj(G,o,e) (luaT_gettm((G),luaT_tag(o),(e)))
#define validtag(G,t) (NUM_TAGS <= (t) && (t) < G->ntag)
extern const char *const luaT_eventname[];
void luaT_init (lua_State *L);
void luaT_realtag (lua_State *L, int tag);
int luaT_tag (const TObject *o);
int luaT_validevent (int t, int e); /* used by compatibility module */
#endif
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