| /* |
| ** $Id: ldo.h,v 1.50 2002/08/06 15:32:22 roberto Exp roberto $ |
| ** 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" |
| |
| |
| /* |
| ** macro to increment stack top. |
| ** There must be always an empty slot at the L->stack.top |
| */ |
| #define incr_top(L) \ |
| {if (L->top >= L->stack_last) luaD_growstack(L, 1); L->top++;} |
| |
| #define luaD_checkstack(L,n) \ |
| if ((char *)L->stack_last - (char *)L->top <= (n)*(int)sizeof(TObject)) \ |
| luaD_growstack(L, n) |
| |
| #define savestack(L,p) ((char *)(p) - (char *)L->stack) |
| #define restorestack(L,n) ((TObject *)((char *)L->stack + (n))) |
| |
| #define saveci(L,p) ((char *)(p) - (char *)L->base_ci) |
| #define restoreci(L,n) ((CallInfo *)((char *)L->base_ci + (n))) |
| |
| |
| /* type of protected functions, to be ran by `runprotected' */ |
| typedef void (*Pfunc) (lua_State *L, void *ud); |
| |
| void luaD_resetprotection (lua_State *L); |
| int luaD_protectedparser (lua_State *L, ZIO *z, int bin); |
| void luaD_callhook (lua_State *L, lua_Hookevent event, int line); |
| StkId luaD_precall (lua_State *L, StkId func); |
| void luaD_call (lua_State *L, StkId func, int nResults); |
| int luaD_pcall (lua_State *L, int nargs, int nresults, ptrdiff_t errfunc); |
| void luaD_poscall (lua_State *L, int wanted, StkId firstResult); |
| void luaD_reallocCI (lua_State *L, int newsize); |
| void luaD_reallocstack (lua_State *L, int newsize); |
| void luaD_growstack (lua_State *L, int n); |
| |
| void luaD_throw (lua_State *L, int errcode); |
| int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud); |
| |
| |
| #endif |