ldebug.h File Reference

#include "lstate.h"

Go to the source code of this file.

Macros
#define	pcRel(pc, p)   (cast(int, (pc) - (p)->code) - 1)
#define	getfuncline(f, pc)   (((f)->lineinfo) ? (f)->lineinfo[pc] : -1)
#define	resethookcount(L)   (L->hookcount = L->basehookcount)

Functions
LUAI_FUNC l_noret	luaG_typeerror (lua_State *L, const TValue *o, const char *opname)
LUAI_FUNC l_noret	luaG_concaterror (lua_State *L, const TValue *p1, const TValue *p2)
LUAI_FUNC l_noret	luaG_opinterror (lua_State *L, const TValue *p1, const TValue *p2, const char *msg)
LUAI_FUNC l_noret	luaG_tointerror (lua_State *L, const TValue *p1, const TValue *p2)
LUAI_FUNC l_noret	luaG_ordererror (lua_State *L, const TValue *p1, const TValue *p2)
LUAI_FUNC l_noret	luaG_runerror (lua_State *L, const char *fmt,...)
LUAI_FUNC const char *	luaG_addinfo (lua_State *L, const char *msg, TString *src, int line)
LUAI_FUNC l_noret	luaG_errormsg (lua_State *L)
LUAI_FUNC void	luaG_traceexec (lua_State *L)

Macro Definition Documentation

getfuncline

#define getfuncline	(		f,
			pc )   (((f)->lineinfo) ? (f)->lineinfo[pc] : -1)

Definition at line 16 of file lua-5.3.6/src/ldebug.h.

pcRel

#define pcRel	(		pc,
			p )   (cast(int, (pc) - (p)->code) - 1)

Definition at line 14 of file lua-5.3.6/src/ldebug.h.

resethookcount

#define resethookcount

(

L

)

(L->hookcount = L->basehookcount)

Definition at line 18 of file lua-5.3.6/src/ldebug.h.

Function Documentation

luaG_addinfo()

LUAI_FUNC const char * luaG_addinfo	(	lua_State *	L,
		const char *	msg,
		TString *	src,
		int	line )

Definition at line 629 of file lua-5.3.6/src/ldebug.c.

                                                  {
  char buff[LUA_IDSIZE];
  if (src)
    luaO_chunkid(buff, getstr(src), LUA_IDSIZE);
  else {  /* no source available; use "?" instead */
    buff[0] = '?'; buff[1] = '\0';
  }
  return luaO_pushfstring(L, "%s:%d: %s", buff, line, msg);
}

luaG_concaterror()

LUAI_FUNC l_noret luaG_concaterror	(	lua_State *	L,
		const TValue *	p1,
		const TValue *	p2 )

Definition at line 592 of file lua-5.3.6/src/ldebug.c.

                                                                            {
  if (ttisstring(p1) || cvt2str(p1)) p1 = p2;
  luaG_typeerror(L, p1, "concatenate");
}

luaG_errormsg()

LUAI_FUNC l_noret luaG_errormsg

(

lua_State *

L

)

Definition at line 618 of file lua-5.1.5/src/ldebug.c.

                                  {
  if (L->errfunc != 0) {  /* is there an error handling function? */
    StkId errfunc = restorestack(L, L->errfunc);
    if (!ttisfunction(errfunc)) luaD_throw(L, LUA_ERRERR);
    setobjs2s(L, L->top, L->top - 1);  /* move argument */
    setobjs2s(L, L->top - 1, errfunc);  /* push function */
    incr_top(L);
    luaD_call(L, L->top - 2, 1);  /* call it */
  }
  luaD_throw(L, LUA_ERRRUN);
}

luaG_opinterror()

LUAI_FUNC l_noret luaG_opinterror	(	lua_State *	L,
		const TValue *	p1,
		const TValue *	p2,
		const char *	msg )

Definition at line 598 of file lua-5.3.6/src/ldebug.c.

                                                            {
  lua_Number temp;
  if (!tonumber(p1, &temp))  /* first operand is wrong? */
    p2 = p1;  /* now second is wrong */
  luaG_typeerror(L, p2, msg);
}

luaG_ordererror()

LUAI_FUNC l_noret luaG_ordererror	(	lua_State *	L,
		const TValue *	p1,
		const TValue *	p2 )

Definition at line 596 of file lua-5.1.5/src/ldebug.c.

                                                                       {
  const char *t1 = luaT_typenames[ttype(p1)];
  const char *t2 = luaT_typenames[ttype(p2)];
  if (t1[2] == t2[2])
    luaG_runerror(L, "attempt to compare two %s values", t1);
  else
    luaG_runerror(L, "attempt to compare %s with %s", t1, t2);
  return 0;
}

luaG_runerror()

LUAI_FUNC l_noret luaG_runerror	(	lua_State *	L,
		const char *	fmt,
			... )

Definition at line 631 of file lua-5.1.5/src/ldebug.c.

                                                        {
  va_list argp;
  va_start(argp, fmt);
  addinfo(L, luaO_pushvfstring(L, fmt, argp));
  va_end(argp);
  luaG_errormsg(L);
}

luaG_tointerror()

LUAI_FUNC l_noret luaG_tointerror	(	lua_State *	L,
		const TValue *	p1,
		const TValue *	p2 )

Definition at line 610 of file lua-5.3.6/src/ldebug.c.

                                                                           {
  lua_Integer temp;
  if (!tointeger(p1, &temp))
    p2 = p1;
  luaG_runerror(L, "number%s has no integer representation", varinfo(L, p2));
}

luaG_traceexec()

LUAI_FUNC void luaG_traceexec

(

lua_State *

L

)

Definition at line 667 of file lua-5.3.6/src/ldebug.c.

                                   {
  CallInfo *ci = L->ci;
  lu_byte mask = L->hookmask;
  int counthook = (--L->hookcount == 0 && (mask & LUA_MASKCOUNT));
  if (counthook)
    resethookcount(L);  /* reset count */
  else if (!(mask & LUA_MASKLINE))
    return;  /* no line hook and count != 0; nothing to be done */
  if (ci->callstatus & CIST_HOOKYIELD) {  /* called hook last time? */
    ci->callstatus &= ~CIST_HOOKYIELD;  /* erase mark */
    return;  /* do not call hook again (VM yielded, so it did not move) */
  }
  if (counthook)
    luaD_hook(L, LUA_HOOKCOUNT, -1);  /* call count hook */
  if (mask & LUA_MASKLINE) {
    Proto *p = ci_func(ci)->p;
    int npc = pcRel(ci->u.l.savedpc, p);
    int newline = getfuncline(p, npc);
    if (npc == 0 ||  /* call linehook when enter a new function, */
        ci->u.l.savedpc <= L->oldpc ||  /* when jump back (loop), or when */
        newline != getfuncline(p, pcRel(L->oldpc, p)))  /* enter a new line */
      luaD_hook(L, LUA_HOOKLINE, newline);  /* call line hook */
  }
  L->oldpc = ci->u.l.savedpc;
  if (L->status == LUA_YIELD) {  /* did hook yield? */
    if (counthook)
      L->hookcount = 1;  /* undo decrement to zero */
    ci->u.l.savedpc--;  /* undo increment (resume will increment it again) */
    ci->callstatus |= CIST_HOOKYIELD;  /* mark that it yielded */
    ci->func = L->top - 1;  /* protect stack below results */
    luaD_throw(L, LUA_YIELD);
  }
}

References CallInfo::callstatus, lua_State::ci, ci_func, CIST_HOOKYIELD, CallInfo::func, getfuncline, lua_State::hookcount, lua_State::hookmask, CallInfo::l, LUA_HOOKCOUNT, LUA_HOOKLINE, LUA_MASKCOUNT, LUA_MASKLINE, LUA_YIELD, luaD_hook(), luaD_throw(), mask, lua_State::oldpc, Proto::p, pcRel, resethookcount, CallInfo::savedpc, lua_State::status, lua_State::top, and CallInfo::u.

luaG_typeerror()

LUAI_FUNC l_noret luaG_typeerror	(	lua_State *	L,
		const TValue *	o,
		const char *	opname )

Definition at line 567 of file lua-5.1.5/src/ldebug.c.

                                                                    {
  const char *name = NULL;
  const char *t = luaT_typenames[ttype(o)];
  const char *kind = (isinstack(L->ci, o)) ?
                         getobjname(L, L->ci, cast_int(o - L->base), &name) :
                         NULL;
  if (kind)
    luaG_runerror(L, "attempt to %s %s " LUA_QS " (a %s value)",
                op, kind, name, t);
  else
    luaG_runerror(L, "attempt to %s a %s value", op, t);
}