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  1. /*
  2. ** $Id: ldo.h,v 2.18 2009/12/17 12:28:57 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. LUAI_FUNC void luaD_hook (lua_State *L, int event, int line);
  31. LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults);
  32. LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults,
  33.                                         int allowyield);
  34. LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
  35.                                         ptrdiff_t oldtop, ptrdiff_t ef);
  36. LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult);
  37. LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);
  38. LUAI_FUNC void luaD_growstack (lua_State *L, int n);
  39. LUAI_FUNC void luaD_shrinkstack (lua_State *L);
  40.  
  41. LUAI_FUNC void luaD_throw (lua_State *L, int errcode);
  42. LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);
  43.  
  44. #endif
  45.  
  46.