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1866
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1 /*
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2 ** $Id: ltm.h,v 2.11 2011/02/28 17:32:10 roberto Exp $
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3 ** Tag methods
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4 ** See Copyright Notice in lua.h
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5 */
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6
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7 #ifndef ltm_h
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8 #define ltm_h
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9
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10
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11 #include "lobject.h"
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12
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13
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14 /*
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15 * WARNING: if you change the order of this enumeration,
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16 * grep "ORDER TM"
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17 */
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18 typedef enum {
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19 TM_INDEX,
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20 TM_NEWINDEX,
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21 TM_GC,
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22 TM_MODE,
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23 TM_LEN,
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24 TM_EQ, /* last tag method with `fast' access */
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25 TM_ADD,
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26 TM_SUB,
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27 TM_MUL,
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28 TM_DIV,
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29 TM_MOD,
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30 TM_POW,
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31 TM_UNM,
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32 TM_LT,
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33 TM_LE,
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34 TM_CONCAT,
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35 TM_CALL,
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36 TM_N /* number of elements in the enum */
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37 } TMS;
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38
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39
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40
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41 #define gfasttm(g,et,e) ((et) == NULL ? NULL : \
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42 ((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e]))
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43
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44 #define fasttm(l,et,e) gfasttm(G(l), et, e)
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45
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46 #define ttypename(x) luaT_typenames_[(x) + 1]
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47 #define objtypename(x) ttypename(ttypenv(x))
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48
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49 LUAI_DDEC const char *const luaT_typenames_[LUA_TOTALTAGS];
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50
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51
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52 LUAI_FUNC const TValue *luaT_gettm (Table *events, TMS event, TString *ename);
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53 LUAI_FUNC const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o,
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54 TMS event);
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55 LUAI_FUNC void luaT_init (lua_State *L);
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56
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57 #endif
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