/*** $Id: ldo.h,v 2.7.1.1 2007/12/27 13:02:25 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 ((char *)L->stack_last - (char *)L->top <= (n)*(int)sizeof(TValue)) \    luaD_growstack(L, n); \  else condhardstacktests(luaD_reallocstack(L, L->stacksize - EXTRA_STACK - 1));#define incr_top(L) {luaD_checkstack(L,1); L->top++;}#define savestack(L,p)		((char *)(p) - (char *)L->stack)#define restorestack(L,n)	((TValue *)((char *)L->stack + (n)))#define saveci(L,p)		((char *)(p) - (char *)L->base_ci)#define restoreci(L,n)		((CallInfo *)((char *)L->base_ci + (n)))/* results from luaD_precall */#define PCRLUA		0	/* initiated a call to a Lua function */#define PCRC		1	/* did a call to a C function */#define PCRYIELD	2	/* C funtion yielded *//* 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);LUAI_FUNC void luaD_callhook (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);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_reallocCI (lua_State *L, int newsize);LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);LUAI_FUNC void luaD_growstack (lua_State *L, int n);LUAI_FUNC void luaD_throw (lua_State *L, int errcode);LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);LUAI_FUNC void luaD_seterrorobj (lua_State *L, int errcode, StkId oldtop);#endif