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