1 /* $NetBSD: ltm.h,v 1.10 2023/06/08 21:12:08 nikita Exp $ */ 2 3 /* 4 ** Id: ltm.h 5 ** Tag methods 6 ** See Copyright Notice in lua.h 7 */ 8 9 #ifndef ltm_h 10 #define ltm_h 11 12 13 #include "lobject.h" 14 #include "lstate.h" 15 16 17 /* 18 * WARNING: if you change the order of this enumeration, 19 * grep "ORDER TM" and "ORDER OP" 20 */ 21 typedef enum { 22 TM_INDEX, 23 TM_NEWINDEX, 24 TM_GC, 25 TM_MODE, 26 TM_LEN, 27 TM_EQ, /* last tag method with fast access */ 28 TM_ADD, 29 TM_SUB, 30 TM_MUL, 31 TM_MOD, 32 #ifndef _KERNEL 33 TM_POW, 34 TM_DIV, 35 #endif /* _KERNEL */ 36 TM_IDIV, 37 TM_BAND, 38 TM_BOR, 39 TM_BXOR, 40 TM_SHL, 41 TM_SHR, 42 TM_UNM, 43 TM_BNOT, 44 TM_LT, 45 TM_LE, 46 TM_CONCAT, 47 TM_CALL, 48 TM_CLOSE, 49 TM_N /* number of elements in the enum */ 50 } TMS; 51 52 53 /* 54 ** Mask with 1 in all fast-access methods. A 1 in any of these bits 55 ** in the flag of a (meta)table means the metatable does not have the 56 ** corresponding metamethod field. (Bit 7 of the flag is used for 57 ** 'isrealasize'.) 58 */ 59 #define maskflags (~(~0u << (TM_EQ + 1))) 60 61 62 /* 63 ** Test whether there is no tagmethod. 64 ** (Because tagmethods use raw accesses, the result may be an "empty" nil.) 65 */ 66 #define notm(tm) ttisnil(tm) 67 68 69 #define gfasttm(g,et,e) ((et) == NULL ? NULL : \ 70 ((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e])) 71 72 #define fasttm(l,et,e) gfasttm(G(l), et, e) 73 74 #define ttypename(x) luaT_typenames_[(x) + 1] 75 76 LUAI_DDEC(const char *const luaT_typenames_[LUA_TOTALTYPES];) 77 78 79 LUAI_FUNC const char *luaT_objtypename (lua_State *L, const TValue *o); 80 81 LUAI_FUNC const TValue *luaT_gettm (Table *events, TMS event, TString *ename); 82 LUAI_FUNC const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, 83 TMS event); 84 LUAI_FUNC void luaT_init (lua_State *L); 85 86 LUAI_FUNC void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1, 87 const TValue *p2, const TValue *p3); 88 LUAI_FUNC void luaT_callTMres (lua_State *L, const TValue *f, 89 const TValue *p1, const TValue *p2, StkId p3); 90 LUAI_FUNC void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2, 91 StkId res, TMS event); 92 LUAI_FUNC void luaT_tryconcatTM (lua_State *L); 93 LUAI_FUNC void luaT_trybinassocTM (lua_State *L, const TValue *p1, 94 const TValue *p2, int inv, StkId res, TMS event); 95 LUAI_FUNC void luaT_trybiniTM (lua_State *L, const TValue *p1, lua_Integer i2, 96 int inv, StkId res, TMS event); 97 LUAI_FUNC int luaT_callorderTM (lua_State *L, const TValue *p1, 98 const TValue *p2, TMS event); 99 LUAI_FUNC int luaT_callorderiTM (lua_State *L, const TValue *p1, int v2, 100 int inv, int isfloat, TMS event); 101 102 LUAI_FUNC void luaT_adjustvarargs (lua_State *L, int nfixparams, 103 CallInfo *ci, const Proto *p); 104 LUAI_FUNC void luaT_getvarargs (lua_State *L, CallInfo *ci, 105 StkId where, int wanted); 106 107 108 #endif 109