1 /* 2 ** $Id: ldo.h,v 2.20.1.1 2013/04/12 18:48:47 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 47