src/ldo.h

   1 /*
   2 ** $Id: ldo.h,v 1.4 1997/12/15 16:17:20 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
  14
  15 #define MULT_RET        255
  16
  17
  18
  19 /*
  20 ** macro to increment stack top.
  21 ** There must be always an empty slot at the L->stack.top
  22 */
  23 #define incr_top { if (L->stack.top >= L->stack.last) luaD_checkstack(1); \
  24                    L->stack.top++; }
  25
  26
  27 /* macros to convert from lua_Object to (TObject *) and back */
  28
  29 #define Address(lo)     ((lo)+L->stack.stack-1)
  30 #define Ref(st)         ((st)-L->stack.stack+1)
  31
  32
  33 void luaD_init (void);
  34 void luaD_adjusttop (StkId newtop);
  35 void luaD_openstack (int nelems);
  36 void luaD_lineHook (int line);
  37 void luaD_callHook (StkId base, TProtoFunc *tf, int isreturn);
  38 void luaD_call (StkId base, int nResults);
  39 void luaD_callTM (TObject *f, int nParams, int nResults);
  40 int luaD_protectedrun (int nResults);
  41 void luaD_gcIM (TObject *o);
  42 void luaD_travstack (int (*fn)(TObject *));
  43 void luaD_checkstack (int n);
  44
  45
  46 #endif