+
−/*
+
−** $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
+
−