lauxlib.c-Dateireferenz

#include <ctype.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lua.h"
#include "lauxlib.h"

Include-Abhängigkeitsdiagramm für lauxlib.c:

gehe zum Quellcode dieser Datei

Datenstrukturen
struct	LoadF
struct	LoadS

Makrodefinitionen
#define	lauxlib_c
#define	LUA_LIB
#define	FREELIST_REF   0 /* free list of references */
#define	abs_index(L, i)
#define	bufflen(B)   ((B)->p - (B)->buffer)
#define	bufffree(B)   ((size_t)(LUAL_BUFFERSIZE - bufflen(B)))
#define	LIMIT   (LUA_MINSTACK/2)

Typdefinitionen
typedef struct LoadF	LoadF
typedef struct LoadS	LoadS

Funktionen
LUALIB_API int	luaL_argerror (lua_State *L, int narg, const char *extramsg)
LUALIB_API int	luaL_typerror (lua_State *L, int narg, const char *tname)
static void	tag_error (lua_State *L, int narg, int tag)
LUALIB_API void	luaL_where (lua_State *L, int level)
LUALIB_API int	luaL_error (lua_State *L, const char *fmt,...)
LUALIB_API int	luaL_checkoption (lua_State *L, int narg, const char *def, const char *const lst[])
LUALIB_API int	luaL_newmetatable (lua_State *L, const char *tname)
LUALIB_API void *	luaL_checkudata (lua_State *L, int ud, const char *tname)
LUALIB_API void	luaL_checkstack (lua_State *L, int space, const char *mes)
LUALIB_API void	luaL_checktype (lua_State *L, int narg, int t)
LUALIB_API void	luaL_checkany (lua_State *L, int narg)
LUALIB_API const char *	luaL_checklstring (lua_State *L, int narg, size_t *len)
LUALIB_API const char *	luaL_optlstring (lua_State *L, int narg, const char *def, size_t *len)
LUALIB_API lua_Number	luaL_checknumber (lua_State *L, int narg)
LUALIB_API lua_Number	luaL_optnumber (lua_State *L, int narg, lua_Number def)
LUALIB_API lua_Integer	luaL_checkinteger (lua_State *L, int narg)
LUALIB_API lua_Integer	luaL_optinteger (lua_State *L, int narg, lua_Integer def)
LUALIB_API int	luaL_getmetafield (lua_State *L, int obj, const char *event)
LUALIB_API int	luaL_callmeta (lua_State *L, int obj, const char *event)
LUALIB_API void()	luaL_register (lua_State *L, const char *libname, const luaL_Reg *l)
static int	libsize (const luaL_Reg *l)
LUALIB_API void	luaI_openlib (lua_State *L, const char *libname, const luaL_Reg *l, int nup)
LUALIB_API const char *	luaL_gsub (lua_State *L, const char *s, const char *p, const char *r)
LUALIB_API const char *	luaL_findtable (lua_State *L, int idx, const char *fname, int szhint)
static int	emptybuffer (luaL_Buffer *B)
static void	adjuststack (luaL_Buffer *B)
LUALIB_API char *	luaL_prepbuffer (luaL_Buffer *B)
LUALIB_API void	luaL_addlstring (luaL_Buffer *B, const char *s, size_t l)
LUALIB_API void	luaL_addstring (luaL_Buffer *B, const char *s)
LUALIB_API void	luaL_pushresult (luaL_Buffer *B)
LUALIB_API void	luaL_addvalue (luaL_Buffer *B)
LUALIB_API void	luaL_buffinit (lua_State *L, luaL_Buffer *B)
LUALIB_API int	luaL_ref (lua_State *L, int t)
LUALIB_API void	luaL_unref (lua_State *L, int t, int ref)
static const char *	getF (lua_State *L, void *ud, size_t *size)
static int	errfile (lua_State *L, const char *what, int fnameindex)
LUALIB_API int	luaL_loadfile (lua_State *L, const char *filename)
static const char *	getS (lua_State *L, void *ud, size_t *size)
LUALIB_API int	luaL_loadbuffer (lua_State *L, const char *buff, size_t size, const char *name)
LUALIB_API int()	luaL_loadstring (lua_State *L, const char *s)
static void *	l_alloc (void *ud, void *ptr, size_t osize, size_t nsize)
static int	panic (lua_State *L)
LUALIB_API lua_State *	luaL_newstate (void)

Makro-Dokumentation

#define abs_index	(		L,
			i
	)

Wert:

((i) > 0 || (i) <= LUA_REGISTRYINDEX ? (i) : \
                    lua_gettop(L) + (i) + 1)

Definiert in Zeile 32 der Datei lauxlib.c.

#define bufffree

(

B)

((size_t)(LUAL_BUFFERSIZE - bufflen(B)))

Definiert in Zeile 391 der Datei lauxlib.c.

#define bufflen

(

B)

((B)->p - (B)->buffer)

Definiert in Zeile 390 der Datei lauxlib.c.

#define FREELIST_REF   0 /* free list of references */

Definiert in Zeile 28 der Datei lauxlib.c.

#define lauxlib_c

Definiert in Zeile 20 der Datei lauxlib.c.

#define LIMIT   (LUA_MINSTACK/2)

Definiert in Zeile 393 der Datei lauxlib.c.

#define LUA_LIB

Definiert in Zeile 21 der Datei lauxlib.c.

Dokumentation der benutzerdefinierten Typen

typedef struct LoadF LoadF

typedef struct LoadS LoadS

Dokumentation der Funktionen

static void adjuststack ( luaL_Buffer *  B)

static

Definiert in Zeile 408 der Datei lauxlib.c.

                                         {
  if (B->lvl > 1) {
    lua_State *L = B->L;
    int toget = 1;  /* number of levels to concat */
    size_t toplen = lua_strlen(L, -1);
    do {
      size_t l = lua_strlen(L, -(toget+1));
      if (B->lvl - toget + 1 >= LIMIT || toplen > l) {
        toplen += l;
        toget++;
      }
      else break;
    } while (toget < B->lvl);
    lua_concat(L, toget);
    B->lvl = B->lvl - toget + 1;
  }
}

static int emptybuffer ( luaL_Buffer *  B)

static

Definiert in Zeile 396 der Datei lauxlib.c.

                                        {
  size_t l = bufflen(B);
  if (l == 0) return 0;  /* put nothing on stack */
  else {
    lua_pushlstring(B->L, B->buffer, l);
    B->p = B->buffer;
    B->lvl++;
    return 1;
  }
}

static int errfile ( lua_State *  L, const char *  what, int  fnameindex  )

static

Definiert in Zeile 554 der Datei lauxlib.c.

                                                                    {
#if 0
  const char *serr = strerror(errno);
  const char *filename = lua_tostring(L, fnameindex) + 1;
  lua_pushfstring(L, "cannot %s %s: %s", what, filename, serr);
#else
  const char *filename = lua_tostring(L, fnameindex) + 1;
  lua_pushfstring(L, "cannot %s %s", what, filename);
#endif
  lua_remove(L, fnameindex);
  return LUA_ERRFILE;
}

static const char* getF ( lua_State *  L, void *  ud, size_t *  size  )

static

Definiert in Zeile 545 der Datei lauxlib.c.

                                                               {
  LoadF *lf = (LoadF *)ud;
  (void)L;
  if (feof(lf->f)) return NULL;
  *size = fread(lf->buff, 1, sizeof(lf->buff), lf->f);
  return (*size > 0) ? lf->buff : NULL;
}

static const char* getS ( lua_State *  L, void *  ud, size_t *  size  )

static

Definiert in Zeile 636 der Datei lauxlib.c.

                                                               {
  LoadS *ls = (LoadS *)ud;
  (void)L;
  if (ls->size == 0) return NULL;
  *size = ls->size;
  ls->size = 0;
  return ls->s;
}

static void* l_alloc ( void *  ud, void *  ptr, size_t  osize, size_t  nsize  )

static

Definiert in Zeile 664 der Datei lauxlib.c.

                                                                       {
  (void)ud;
  (void)osize;
  if (nsize == 0) {
    free(ptr);
    return NULL;
  }
  else {
    if( nsize <= osize ) {
      return ptr;
    }
    void* res = malloc( nsize );
    if( !res )
      return NULL;
    memcpy( res, ptr, osize );
    free( ptr );
    return res;
  }
}

static int libsize ( const luaL_Reg *  l)

static

Definiert in Zeile 235 der Datei lauxlib.c.

                                       {
  int size = 0;
  for (; l->name; l++) size++;
  return size;
}

LUALIB_API void luaI_openlib	(	lua_State *	L,
		const char *	libname,
		const luaL_Reg *	l,
		int	nup
	)

Definiert in Zeile 242 der Datei lauxlib.c.

                                                          {
  if (libname) {
    int size = libsize(l);
    /* check whether lib already exists */
    luaL_findtable(L, LUA_REGISTRYINDEX, "_LOADED", 1);
    lua_getfield(L, -1, libname);  /* get _LOADED[libname] */
    if (!lua_istable(L, -1)) {  /* not found? */
      lua_pop(L, 1);  /* remove previous result */
      /* try global variable (and create one if it does not exist) */
      if (luaL_findtable(L, LUA_GLOBALSINDEX, libname, size) != NULL)
        luaL_error(L, "name conflict for module " LUA_QS, libname);
      lua_pushvalue(L, -1);
      lua_setfield(L, -3, libname);  /* _LOADED[libname] = new table */
    }
    lua_remove(L, -2);  /* remove _LOADED table */
    lua_insert(L, -(nup+1));  /* move library table to below upvalues */
  }
  for (; l->name; l++) {
    int i;
    for (i=0; i<nup; i++)  /* copy upvalues to the top */
      lua_pushvalue(L, -nup);
    lua_pushcclosure(L, l->func, nup);
    lua_setfield(L, -(nup+2), l->name);
  }
  lua_pop(L, nup);  /* remove upvalues */
}

LUALIB_API void luaL_addlstring	(	luaL_Buffer *	B,
		const char *	s,
		size_t	l
	)

Definiert in Zeile 434 der Datei lauxlib.c.

                                                                          {
  while (l--)
    luaL_addchar(B, *s++);
}

LUALIB_API void luaL_addstring	(	luaL_Buffer *	B,
		const char *	s
	)

Definiert in Zeile 440 der Datei lauxlib.c.

                                                               {
  luaL_addlstring(B, s, strlen(s));
}

LUALIB_API void luaL_addvalue

(

luaL_Buffer *

B)

Definiert in Zeile 452 der Datei lauxlib.c.

                                               {
  lua_State *L = B->L;
  size_t vl;
  const char *s = lua_tolstring(L, -1, &vl);
  if (vl <= bufffree(B)) {  /* fit into buffer? */
    memcpy(B->p, s, vl);  /* put it there */
    B->p += vl;
    lua_pop(L, 1);  /* remove from stack */
  }
  else {
    if (emptybuffer(B))
      lua_insert(L, -2);  /* put buffer before new value */
    B->lvl++;  /* add new value into B stack */
    adjuststack(B);
  }
}

LUALIB_API int luaL_argerror	(	lua_State *	L,
		int	narg,
		const char *	extramsg
	)

Definiert in Zeile 43 der Datei lauxlib.c.

                                                                            {
  lua_Debug ar;
  if (!lua_getstack(L, 0, &ar))  /* no stack frame? */
    return luaL_error(L, "bad argument #%d (%s)", narg, extramsg);
  lua_getinfo(L, "n", &ar);
  if (strcmp(ar.namewhat, "method") == 0) {
    narg--;  /* do not count `self' */
    if (narg == 0)  /* error is in the self argument itself? */
      return luaL_error(L, "calling " LUA_QS " on bad self (%s)",
                           ar.name, extramsg);
  }
  if (ar.name == NULL)
    ar.name = "?";
  return luaL_error(L, "bad argument #%d to " LUA_QS " (%s)",
                        narg, ar.name, extramsg);
}

LUALIB_API void luaL_buffinit	(	lua_State *	L,
		luaL_Buffer *	B
	)

Definiert in Zeile 470 der Datei lauxlib.c.

                                                             {
  B->L = L;
  B->p = B->buffer;
  B->lvl = 0;
}

LUALIB_API int luaL_callmeta	(	lua_State *	L,
		int	obj,
		const char *	event
	)

Definiert in Zeile 219 der Datei lauxlib.c.

                                                                        {
  obj = abs_index(L, obj);
  if (!luaL_getmetafield(L, obj, event))  /* no metafield? */
    return 0;
  lua_pushvalue(L, obj);
  lua_call(L, 1, 1);
  return 1;
}

LUALIB_API void luaL_checkany	(	lua_State *	L,
		int	narg
	)

Definiert in Zeile 152 der Datei lauxlib.c.

                                                       {
  if (lua_type(L, narg) == LUA_TNONE)
    luaL_argerror(L, narg, "value expected");
}

LUALIB_API lua_Integer luaL_checkinteger	(	lua_State *	L,
		int	narg
	)

Definiert in Zeile 189 der Datei lauxlib.c.

                                                                  {
  lua_Integer d = lua_tointeger(L, narg);
  if (d == 0 && !lua_isnumber(L, narg))  /* avoid extra test when d is not 0 */
    tag_error(L, narg, LUA_TNUMBER);
  return d;
}

LUALIB_API const char* luaL_checklstring	(	lua_State *	L,
		int	narg,
		size_t *	len
	)

Definiert in Zeile 158 der Datei lauxlib.c.

                                                                               {
  const char *s = lua_tolstring(L, narg, len);
  if (!s) tag_error(L, narg, LUA_TSTRING);
  return s;
}

LUALIB_API lua_Number luaL_checknumber	(	lua_State *	L,
		int	narg
	)

Definiert in Zeile 176 der Datei lauxlib.c.

                                                                {
  lua_Number d = lua_tonumber(L, narg);
  if (d == 0 && !lua_isnumber(L, narg))  /* avoid extra test when d is not 0 */
    tag_error(L, narg, LUA_TNUMBER);
  return d;
}

LUALIB_API int luaL_checkoption	(	lua_State *	L,
		int	narg,
		const char *	def,
		const char *const	lst[]
	)

Definiert in Zeile 99 der Datei lauxlib.c.

                                                          {
  const char *name = (def) ? luaL_optstring(L, narg, def) :
                             luaL_checkstring(L, narg);
  int i;
  for (i=0; lst[i]; i++)
    if (strcmp(lst[i], name) == 0)
      return i;
  return luaL_argerror(L, narg,
                       lua_pushfstring(L, "invalid option " LUA_QS, name));
}

LUALIB_API void luaL_checkstack	(	lua_State *	L,
		int	space,
		const char *	mes
	)

Definiert in Zeile 140 der Datei lauxlib.c.

                                                                           {
  if (!lua_checkstack(L, space))
    luaL_error(L, "stack overflow (%s)", mes);
}

LUALIB_API void luaL_checktype	(	lua_State *	L,
		int	narg,
		int	t
	)

Definiert in Zeile 146 der Datei lauxlib.c.

                                                               {
  if (lua_type(L, narg) != t)
    tag_error(L, narg, t);
}

LUALIB_API void* luaL_checkudata	(	lua_State *	L,
		int	ud,
		const char *	tname
	)

Definiert in Zeile 124 der Datei lauxlib.c.

                                                                           {
  void *p = lua_touserdata(L, ud);
  if (p != NULL) {  /* value is a userdata? */
    if (lua_getmetatable(L, ud)) {  /* does it have a metatable? */
      lua_getfield(L, LUA_REGISTRYINDEX, tname);  /* get correct metatable */
      if (lua_rawequal(L, -1, -2)) {  /* does it have the correct mt? */
        lua_pop(L, 2);  /* remove both metatables */
        return p;
      }
    }
  }
  luaL_typerror(L, ud, tname);  /* else error */
  return NULL;  /* to avoid warnings */
}

LUALIB_API int luaL_error	(	lua_State *	L,
		const char *	fmt,
			...
	)

Definiert in Zeile 86 der Datei lauxlib.c.

                                                               {
  va_list argp;
  va_start(argp, fmt);
  luaL_where(L, 1);
  lua_pushvfstring(L, fmt, argp);
  va_end(argp);
  lua_concat(L, 2);
  return lua_error(L);
}

LUALIB_API const char* luaL_findtable	(	lua_State *	L,
		int	idx,
		const char *	fname,
		int	szhint
	)

Definiert in Zeile 355 der Datei lauxlib.c.

                                                                      {
  const char *e;
  lua_pushvalue(L, idx);
  do {
    e = strchr(fname, '.');
    if (e == NULL) e = fname + strlen(fname);
    lua_pushlstring(L, fname, e - fname);
    lua_rawget(L, -2);
    if (lua_isnil(L, -1)) {  /* no such field? */
      lua_pop(L, 1);  /* remove this nil */
      lua_createtable(L, 0, (*e == '.' ? 1 : szhint)); /* new table for field */
      lua_pushlstring(L, fname, e - fname);
      lua_pushvalue(L, -2);
      lua_settable(L, -4);  /* set new table into field */
    }
    else if (!lua_istable(L, -1)) {  /* field has a non-table value? */
      lua_pop(L, 2);  /* remove table and value */
      return fname;  /* return problematic part of the name */
    }
    lua_remove(L, -2);  /* remove previous table */
    fname = e + 1;
  } while (*e == '.');
  return NULL;
}

LUALIB_API int luaL_getmetafield	(	lua_State *	L,
		int	obj,
		const char *	event
	)

Definiert in Zeile 203 der Datei lauxlib.c.

                                                                            {
  if (!lua_getmetatable(L, obj))  /* no metatable? */
    return 0;
  lua_pushstring(L, event);
  lua_rawget(L, -2);
  if (lua_isnil(L, -1)) {
    lua_pop(L, 2);  /* remove metatable and metafield */
    return 0;
  }
  else {
    lua_remove(L, -2);  /* remove only metatable */
    return 1;
  }
}

LUALIB_API const char* luaL_gsub	(	lua_State *	L,
		const char *	s,
		const char *	p,
		const char *	r
	)

Definiert in Zeile 339 der Datei lauxlib.c.

                                                                              {
  const char *wild;
  size_t l = strlen(p);
  luaL_Buffer b;
  luaL_buffinit(L, &b);
  while ((wild = strstr(s, p)) != NULL) {
    luaL_addlstring(&b, s, wild - s);  /* push prefix */
    luaL_addstring(&b, r);  /* push replacement in place of pattern */
    s = wild + l;  /* continue after `p' */
  }
  luaL_addstring(&b, s);  /* push last suffix */
  luaL_pushresult(&b);
  return lua_tostring(L, -1);
}

LUALIB_API int luaL_loadbuffer	(	lua_State *	L,
		const char *	buff,
		size_t	size,
		const char *	name
	)

Definiert in Zeile 646 der Datei lauxlib.c.

                                                  {
  LoadS ls;
  ls.s = buff;
  ls.size = size;
  return lua_load(L, getS, &ls, name);
}

LUALIB_API int luaL_loadfile	(	lua_State *	L,
		const char *	filename
	)

Definiert in Zeile 608 der Datei lauxlib.c.

                                                                  {
  LoadF lf;
  int status, readerror;
  char c;
  int fnameindex = lua_gettop(L) + 1;  /* index of filename on the stack */
  lua_pushfstring(L, "@%s", filename);
  lf.f = fopen(filename, "rb"); // cams don't translate crlf anyway
  if (lf.f == NULL) return errfile(L, "fopen", fnameindex);
  status = lua_load(L, getF, &lf, lua_tostring(L, -1));

  readerror = ((fread(&c, 1, 1, lf.f) < 1) && !feof(lf.f));

  fclose(lf.f);  /* close file (even in case of errors) */
  if (readerror) {
    lua_settop(L, fnameindex);  /* ignore results from `lua_load' */
    return errfile(L, "read", fnameindex);
  }
  lua_remove(L, fnameindex);
  return status;
}

LUALIB_API int() luaL_loadstring	(	lua_State *	L,
		const char *	s
	)

Definiert in Zeile 655 der Datei lauxlib.c.

                                                               {
  return luaL_loadbuffer(L, s, strlen(s), s);
}

LUALIB_API int luaL_newmetatable	(	lua_State *	L,
		const char *	tname
	)

Definiert in Zeile 112 der Datei lauxlib.c.

                                                                   {
  lua_getfield(L, LUA_REGISTRYINDEX, tname);  /* get registry.name */
  if (!lua_isnil(L, -1))  /* name already in use? */
    return 0;  /* leave previous value on top, but return 0 */
  lua_pop(L, 1);
  lua_newtable(L);  /* create metatable */
  lua_pushvalue(L, -1);
  lua_setfield(L, LUA_REGISTRYINDEX, tname);  /* registry.name = metatable */
  return 1;
}

LUALIB_API lua_State* luaL_newstate

(

void

)

Definiert in Zeile 695 der Datei lauxlib.c.

                                           {
  lua_State *L = lua_newstate(l_alloc, NULL);
  if (L) lua_atpanic(L, &panic);
  return L;
}

LUALIB_API lua_Integer luaL_optinteger	(	lua_State *	L,
		int	narg,
		lua_Integer	def
	)

Definiert in Zeile 197 der Datei lauxlib.c.

                                                                       {
  return luaL_opt(L, luaL_checkinteger, narg, def);
}

LUALIB_API const char* luaL_optlstring	(	lua_State *	L,
		int	narg,
		const char *	def,
		size_t *	len
	)

Definiert in Zeile 165 der Datei lauxlib.c.

                                                                      {
  if (lua_isnoneornil(L, narg)) {
    if (len)
      *len = (def ? strlen(def) : 0);
    return def;
  }
  else return luaL_checklstring(L, narg, len);
}

LUALIB_API lua_Number luaL_optnumber	(	lua_State *	L,
		int	narg,
		lua_Number	def
	)

Definiert in Zeile 184 der Datei lauxlib.c.

                                                                              {
  return luaL_opt(L, luaL_checknumber, narg, def);
}

LUALIB_API char* luaL_prepbuffer

(

luaL_Buffer *

B)

Definiert in Zeile 427 der Datei lauxlib.c.

                                                  {
  if (emptybuffer(B))
    adjuststack(B);
  return B->buffer;
}

LUALIB_API void luaL_pushresult

(

luaL_Buffer *

B)

Definiert in Zeile 445 der Datei lauxlib.c.

                                                 {
  emptybuffer(B);
  lua_concat(B->L, B->lvl);
  B->lvl = 1;
}

LUALIB_API int luaL_ref	(	lua_State *	L,
		int	t
	)

Definiert in Zeile 479 der Datei lauxlib.c.

                                              {
  int ref;
  t = abs_index(L, t);
  if (lua_isnil(L, -1)) {
    lua_pop(L, 1);  /* remove from stack */
    return LUA_REFNIL;  /* `nil' has a unique fixed reference */
  }
  lua_rawgeti(L, t, FREELIST_REF);  /* get first free element */
  ref = (int)lua_tointeger(L, -1);  /* ref = t[FREELIST_REF] */
  lua_pop(L, 1);  /* remove it from stack */
  if (ref != 0) {  /* any free element? */
    lua_rawgeti(L, t, ref);  /* remove it from list */
    lua_rawseti(L, t, FREELIST_REF);  /* (t[FREELIST_REF] = t[ref]) */
  }
  else {  /* no free elements */
    ref = (int)lua_objlen(L, t);
    ref++;  /* create new reference */
  }
  lua_rawseti(L, t, ref);
  return ref;
}

LUALIB_API void() luaL_register	(	lua_State *	L,
		const char *	libname,
		const luaL_Reg *	l
	)

Definiert in Zeile 229 der Datei lauxlib.c.

                                                   {
  luaI_openlib(L, libname, l, 0);
}

LUALIB_API int luaL_typerror	(	lua_State *	L,
		int	narg,
		const char *	tname
	)

Definiert in Zeile 61 der Datei lauxlib.c.

                                                                         {
  const char *msg = lua_pushfstring(L, "%s expected, got %s",
                                    tname, luaL_typename(L, narg));
  return luaL_argerror(L, narg, msg);
}

LUALIB_API void luaL_unref	(	lua_State *	L,
		int	t,
		int	ref
	)

Definiert in Zeile 502 der Datei lauxlib.c.

                                                          {
  if (ref >= 0) {
    t = abs_index(L, t);
    lua_rawgeti(L, t, FREELIST_REF);
    lua_rawseti(L, t, ref);  /* t[ref] = t[FREELIST_REF] */
    lua_pushinteger(L, ref);
    lua_rawseti(L, t, FREELIST_REF);  /* t[FREELIST_REF] = ref */
  }
}

LUALIB_API void luaL_where	(	lua_State *	L,
		int	level
	)

Definiert in Zeile 73 der Datei lauxlib.c.

                                                     {
  lua_Debug ar;
  if (lua_getstack(L, level, &ar)) {  /* check function at level */
    lua_getinfo(L, "Sl", &ar);  /* get info about it */
    if (ar.currentline > 0) {  /* is there info? */
      lua_pushfstring(L, "%s:%d: ", ar.short_src, ar.currentline);
      return;
    }
  }
  lua_pushliteral(L, "");  /* else, no information available... */
}

static int panic ( lua_State *  L)

static

Definiert in Zeile 685 der Datei lauxlib.c.

                                {
  (void)L;  /* to avoid warnings */
#if 0
  printf( "PANIC: unprotected error in call to Lua API (%s)\n",
      lua_tostring(L, -1));
#endif
  return 0;
}

static void tag_error ( lua_State *  L, int  narg, int  tag  )

static

Definiert in Zeile 68 der Datei lauxlib.c.

                                                        {
  luaL_typerror(L, narg, lua_typename(L, tag));
}