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' */ 27typedef void (*Pfunc) (lua_State *L, void *ud); 28 29LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name, 30 const char *mode); 31LUAI_FUNC void luaD_hook (lua_State *L, int event, int line); 32LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults); 33LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults, 34 int allowyield); 35LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u, 36 ptrdiff_t oldtop, ptrdiff_t ef); 37LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult); 38LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize); 39LUAI_FUNC void luaD_growstack (lua_State *L, int n); 40LUAI_FUNC void luaD_shrinkstack (lua_State *L); 41 42LUAI_FUNC l_noret luaD_throw (lua_State *L, int errcode); 43LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud); 44 45#endif 46