/*** $Id: ldo.h,v 2.21 2014/10/25 11:50:46 roberto Exp $** Stack and Call structure of Lua** See Copyright Notice in lua.h*/ #ifndef ldo_h#define ldo_h  #include "lobject.h"#include "lstate.h"#include "lzio.h"  #define luaD_checkstack(L,n)	if (L->stack_last - L->top <= (n)) \				    luaD_growstack(L, n); else condmovestack(L);  #define incr_top(L) {L->top++; luaD_checkstack(L,0);} #define savestack(L,p)		((char *)(p) - (char *)L->stack)#define restorestack(L,n)	((TValue *)((char *)L->stack + (n)))  /* type of protected functions, to be ran by 'runprotected' */typedef void (*Pfunc) (lua_State *L, void *ud); LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,                                                  const char *mode);LUAI_FUNC void luaD_hook (lua_State *L, int event, int line);LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults);LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults,                                        int allowyield);LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,                                        ptrdiff_t oldtop, ptrdiff_t ef);LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult);LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);LUAI_FUNC void luaD_growstack (lua_State *L, int n);LUAI_FUNC void luaD_shrinkstack (lua_State *L); LUAI_FUNC l_noret luaD_throw (lua_State *L, int errcode);LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud); #endif