liblua/ldo.h

   1 /*
   2 ** $Id: ldo.h,v 2.20 2011/11/29 15:55:08 roberto Exp $
   3 ** Stack and Call structure of Lua
   4 ** See Copyright Notice in lua.h
   5 */
   6
   7 #ifndef ldo_h
   8 #define ldo_h
   9
  10
  11 #include "lobject.h"
  12 #include "lstate.h"
  13 #include "lzio.h"
  14
  15
  16 #define luaD_checkstack(L,n)    if (L->stack_last - L->top <= (n)) \
  17                                     luaD_growstack(L, n); else condmovestack(L);
  18
  19
  20 #define incr_top(L) {L->top++; luaD_checkstack(L,0);}
  21
  22 #define savestack(L,p)          ((char *)(p) - (char *)L->stack)
  23 #define restorestack(L,n)       ((TValue *)((char *)L->stack + (n)))
  24
  25
  26 /* type of protected functions, to be ran by `runprotected' */
  27 typedef void (*Pfunc) (lua_State *L, void *ud);
  28
  29 LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,
  30                                                   const char *mode);
  31 LUAI_FUNC void luaD_hook (lua_State *L, int event, int line);
  32 LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults);
  33 LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults,
  34                                         int allowyield);
  35 LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
  36                                         ptrdiff_t oldtop, ptrdiff_t ef);
  37 LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult);
  38 LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);
  39 LUAI_FUNC void luaD_growstack (lua_State *L, int n);
  40 LUAI_FUNC void luaD_shrinkstack (lua_State *L);
  41
  42 LUAI_FUNC l_noret luaD_throw (lua_State *L, int errcode);
  43 LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);
  44
  45 #endif
  46