/* ** $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) ((TValue *)(p) - (TValue *)L->stack) #define restorestack(L,n) ((TValue *)((TValue *)L->stack + (n))) #define saveci(L,p) ((CallInfo *)(p) - (CallInfo *)L->base_ci) #define restoreci(L,n) ((CallInfo *)((CallInfo *)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