rlm@1: /*
rlm@1: ** $Id: ldo.h,v 2.7.1.1 2007/12/27 13:02:25 roberto Exp $
rlm@1: ** Stack and Call structure of Lua
rlm@1: ** See Copyright Notice in lua.h
rlm@1: */
rlm@1: 
rlm@1: #ifndef ldo_h
rlm@1: #define ldo_h
rlm@1: 
rlm@1: 
rlm@1: #include "lobject.h"
rlm@1: #include "lstate.h"
rlm@1: #include "lzio.h"
rlm@1: 
rlm@1: 
rlm@1: #define luaD_checkstack(L,n)	\
rlm@1:   if ((char *)L->stack_last - (char *)L->top <= (n)*(int)sizeof(TValue)) \
rlm@1:     luaD_growstack(L, n); \
rlm@1:   else condhardstacktests(luaD_reallocstack(L, L->stacksize - EXTRA_STACK - 1));
rlm@1: 
rlm@1: 
rlm@1: #define incr_top(L) {luaD_checkstack(L,1); L->top++;}
rlm@1: 
rlm@1: #define savestack(L,p)		((char *)(p) - (char *)L->stack)
rlm@1: #define restorestack(L,n)	((TValue *)((char *)L->stack + (n)))
rlm@1: 
rlm@1: #define saveci(L,p)		((char *)(p) - (char *)L->base_ci)
rlm@1: #define restoreci(L,n)		((CallInfo *)((char *)L->base_ci + (n)))
rlm@1: 
rlm@1: 
rlm@1: /* results from luaD_precall */
rlm@1: #define PCRLUA		0	/* initiated a call to a Lua function */
rlm@1: #define PCRC		1	/* did a call to a C function */
rlm@1: #define PCRYIELD	2	/* C funtion yielded */
rlm@1: 
rlm@1: 
rlm@1: /* type of protected functions, to be ran by `runprotected' */
rlm@1: typedef void (*Pfunc) (lua_State *L, void *ud);
rlm@1: 
rlm@1: LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name);
rlm@1: LUAI_FUNC void luaD_callhook (lua_State *L, int event, int line);
rlm@1: LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults);
rlm@1: LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults);
rlm@1: LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
rlm@1:                                         ptrdiff_t oldtop, ptrdiff_t ef);
rlm@1: LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult);
rlm@1: LUAI_FUNC void luaD_reallocCI (lua_State *L, int newsize);
rlm@1: LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);
rlm@1: LUAI_FUNC void luaD_growstack (lua_State *L, int n);
rlm@1: 
rlm@1: LUAI_FUNC void luaD_throw (lua_State *L, int errcode);
rlm@1: LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);
rlm@1: 
rlm@1: LUAI_FUNC void luaD_seterrorobj (lua_State *L, int errcode, StkId oldtop);
rlm@1: 
rlm@1: #endif
rlm@1: