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1087
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1 /*
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2 ** $Id: ldo.h,v 2.20 2011/11/29 15:55:08 roberto Exp $
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3 ** Stack and Call structure of Lua
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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 ldo_h
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8 #define ldo_h
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9
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10
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11 #include "lobject.h"
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12 #include "lstate.h"
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13 #include "lzio.h"
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14
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15
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16 #define luaD_checkstack(L,n) if (L->stack_last - L->top <= (n)) \
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17 luaD_growstack(L, n); else condmovestack(L);
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18
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19
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20 #define incr_top(L) {L->top++; luaD_checkstack(L,0);}
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21
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22 #define savestack(L,p) ((char *)(p) - (char *)L->stack)
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23 #define restorestack(L,n) ((TValue *)((char *)L->stack + (n)))
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24
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25
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26 /* type of protected functions, to be ran by `runprotected' */
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27 typedef void (*Pfunc) (lua_State *L, void *ud);
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28
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29 LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,
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30 const char *mode);
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31 LUAI_FUNC void luaD_hook (lua_State *L, int event, int line);
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32 LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults);
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33 LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults,
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34 int allowyield);
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35 LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
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36 ptrdiff_t oldtop, ptrdiff_t ef);
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37 LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult);
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38 LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);
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39 LUAI_FUNC void luaD_growstack (lua_State *L, int n);
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40 LUAI_FUNC void luaD_shrinkstack (lua_State *L);
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41
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42 LUAI_FUNC l_noret luaD_throw (lua_State *L, int errcode);
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43 LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);
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44
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45 #endif
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46
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