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annotate third_party/luajit/src/lj_meta.h @ 205:e07b4b5a66bb

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author MrJuneJune <me@mrjunejune.com>
date Sun, 15 Feb 2026 11:07:52 -0800
parents 94705b5986b3
children
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178
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1 /*
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2 ** Metamethod handling.
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3 ** Copyright (C) 2005-2023 Mike Pall. See Copyright Notice in luajit.h
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4 */
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5
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6 #ifndef _LJ_META_H
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7 #define _LJ_META_H
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8
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9 #include "lj_obj.h"
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10
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11 /* Metamethod handling */
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12 LJ_FUNC void lj_meta_init(lua_State *L);
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13 LJ_FUNC cTValue *lj_meta_cache(GCtab *mt, MMS mm, GCstr *name);
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14 LJ_FUNC cTValue *lj_meta_lookup(lua_State *L, cTValue *o, MMS mm);
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15 #if LJ_HASFFI
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16 LJ_FUNC int lj_meta_tailcall(lua_State *L, cTValue *tv);
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17 #endif
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18
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19 #define lj_meta_fastg(g, mt, mm) \
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20 ((mt) == NULL ? NULL : ((mt)->nomm & (1u<<(mm))) ? NULL : \
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21 lj_meta_cache(mt, mm, mmname_str(g, mm)))
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22 #define lj_meta_fast(L, mt, mm) lj_meta_fastg(G(L), mt, mm)
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23
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24 /* C helpers for some instructions, called from assembler VM. */
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25 LJ_FUNCA cTValue *lj_meta_tget(lua_State *L, cTValue *o, cTValue *k);
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26 LJ_FUNCA TValue *lj_meta_tset(lua_State *L, cTValue *o, cTValue *k);
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27 LJ_FUNCA TValue *lj_meta_arith(lua_State *L, TValue *ra, cTValue *rb,
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28 cTValue *rc, BCReg op);
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29 LJ_FUNCA TValue *lj_meta_cat(lua_State *L, TValue *top, int left);
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30 LJ_FUNCA TValue * LJ_FASTCALL lj_meta_len(lua_State *L, cTValue *o);
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31 LJ_FUNCA TValue *lj_meta_equal(lua_State *L, GCobj *o1, GCobj *o2, int ne);
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32 LJ_FUNCA TValue * LJ_FASTCALL lj_meta_equal_cd(lua_State *L, BCIns ins);
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33 LJ_FUNCA TValue *lj_meta_comp(lua_State *L, cTValue *o1, cTValue *o2, int op);
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34 LJ_FUNCA void lj_meta_istype(lua_State *L, BCReg ra, BCReg tp);
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35 LJ_FUNCA void lj_meta_call(lua_State *L, TValue *func, TValue *top);
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36 LJ_FUNCA void LJ_FASTCALL lj_meta_for(lua_State *L, TValue *o);
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37
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38 #endif