lbaselib.c File Reference

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

Go to the source code of this file.

Macros
#define	lbaselib_c
#define	LUA_LIB
#define	CO_RUN   0 /* running */
#define	CO_SUS   1 /* suspended */
#define	CO_NOR   2 /* 'normal' (it resumed another coroutine) */
#define	CO_DEAD   3

Functions
static int	luaB_print (lua_State *L)
static int	luaB_tonumber (lua_State *L)
static int	luaB_error (lua_State *L)
static int	luaB_getmetatable (lua_State *L)
static int	luaB_setmetatable (lua_State *L)
static void	getfunc (lua_State *L, int opt)
static int	luaB_getfenv (lua_State *L)
static int	luaB_setfenv (lua_State *L)
static int	luaB_rawequal (lua_State *L)
static int	luaB_rawget (lua_State *L)
static int	luaB_rawset (lua_State *L)
static int	luaB_gcinfo (lua_State *L)
static int	luaB_collectgarbage (lua_State *L)
static int	luaB_type (lua_State *L)
static int	luaB_next (lua_State *L)
static int	luaB_pairs (lua_State *L)
static int	ipairsaux (lua_State *L)
static int	luaB_ipairs (lua_State *L)
static int	load_aux (lua_State *L, int status)
static int	luaB_loadstring (lua_State *L)
static int	luaB_loadfile (lua_State *L)
static const char *	generic_reader (lua_State *L, void *ud, size_t *size)
static int	luaB_load (lua_State *L)
static int	luaB_dofile (lua_State *L)
static int	luaB_assert (lua_State *L)
static int	luaB_unpack (lua_State *L)
static int	luaB_select (lua_State *L)
static int	luaB_pcall (lua_State *L)
static int	luaB_xpcall (lua_State *L)
static int	luaB_tostring (lua_State *L)
static int	luaB_newproxy (lua_State *L)
static int	costatus (lua_State *L, lua_State *co)
static int	luaB_costatus (lua_State *L)
static int	auxresume (lua_State *L, lua_State *co, int narg)
static int	luaB_coresume (lua_State *L)
static int	luaB_auxwrap (lua_State *L)
static int	luaB_cocreate (lua_State *L)
static int	luaB_cowrap (lua_State *L)
static int	luaB_yield (lua_State *L)
static int	luaB_corunning (lua_State *L)
static void	auxopen (lua_State *L, const char *name, lua_CFunction f, lua_CFunction u)
static void	base_open (lua_State *L)
LUALIB_API int	luaopen_base (lua_State *L)

Variables
static const luaL_Reg	base_funcs []
static const char *const	statnames []
static const luaL_Reg	co_funcs []

Macro Definition Documentation

CO_DEAD

#define CO_DEAD   3

Definition at line 485 of file lua-5.1.5/src/lbaselib.c.

Referenced by costatus().

CO_NOR

#define CO_NOR   2 /* 'normal' (it resumed another coroutine) */

Definition at line 484 of file lua-5.1.5/src/lbaselib.c.

Referenced by costatus().

CO_RUN

#define CO_RUN   0 /* running */

Definition at line 482 of file lua-5.1.5/src/lbaselib.c.

Referenced by costatus().

CO_SUS

#define CO_SUS   1 /* suspended */

Definition at line 483 of file lua-5.1.5/src/lbaselib.c.

Referenced by auxresume(), and costatus().

lbaselib_c

#define lbaselib_c

Definition at line 14 of file lua-5.1.5/src/lbaselib.c.

LUA_LIB

#define LUA_LIB

Definition at line 15 of file lua-5.1.5/src/lbaselib.c.

Function Documentation

auxopen()

static void auxopen ( lua_State * L, const char * name, lua_CFunction f, lua_CFunction u )

static

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

                                                       {
  lua_pushcfunction(L, u);
  lua_pushcclosure(L, f, 1);
  lua_setfield(L, -2, name);
}

References lua_pushcclosure(), lua_pushcfunction, lua_setfield(), and name.

Referenced by base_open().

auxresume()

static int auxresume ( lua_State * L, lua_State * co, int narg )

static

Definition at line 518 of file lua-5.1.5/src/lbaselib.c.

                                                             {
  int status = costatus(L, co);
  if (!lua_checkstack(co, narg))
    luaL_error(L, "too many arguments to resume");
  if (status != CO_SUS) {
    lua_pushfstring(L, "cannot resume %s coroutine", statnames[status]);
    return -1;  /* error flag */
  }
  lua_xmove(L, co, narg);
  lua_setlevel(L, co);
  status = lua_resume(co, narg);
  if (status == 0 || status == LUA_YIELD) {
    int nres = lua_gettop(co);
    if (!lua_checkstack(L, nres + 1))
      luaL_error(L, "too many results to resume");
    lua_xmove(co, L, nres);  /* move yielded values */
    return nres;
  }
  else {
    lua_xmove(co, L, 1);  /* move error message */
    return -1;  /* error flag */
  }
}

References CO_SUS, costatus(), lua_checkstack(), lua_gettop(), lua_pushfstring(), lua_resume(), lua_setlevel(), lua_xmove(), LUA_YIELD, luaL_error(), and statnames.

Referenced by luaB_auxwrap(), and luaB_coresume().

base_open()

static void base_open ( lua_State * L )

static

Definition at line 626 of file lua-5.1.5/src/lbaselib.c.

                                     {
  /* set global _G */
  lua_pushvalue(L, LUA_GLOBALSINDEX);
  lua_setglobal(L, "_G");
  /* open lib into global table */
  luaL_register(L, "_G", base_funcs);
  lua_pushliteral(L, LUA_VERSION);
  lua_setglobal(L, "_VERSION");  /* set global _VERSION */
  /* `ipairs' and `pairs' need auxiliary functions as upvalues */
  auxopen(L, "ipairs", luaB_ipairs, ipairsaux);
  auxopen(L, "pairs", luaB_pairs, luaB_next);
  /* `newproxy' needs a weaktable as upvalue */
  lua_createtable(L, 0, 1);  /* new table `w' */
  lua_pushvalue(L, -1);  /* `w' will be its own metatable */
  lua_setmetatable(L, -2);
  lua_pushliteral(L, "kv");
  lua_setfield(L, -2, "__mode");  /* metatable(w).__mode = "kv" */
  lua_pushcclosure(L, luaB_newproxy, 1);
  lua_setglobal(L, "newproxy");  /* set global `newproxy' */
}

References auxopen(), base_funcs, ipairsaux(), lua_createtable(), LUA_GLOBALSINDEX, lua_pushcclosure(), lua_pushliteral, lua_pushvalue(), lua_setfield(), lua_setglobal, lua_setmetatable(), LUA_VERSION, luaB_ipairs(), luaB_newproxy(), luaB_next(), luaB_pairs(), and luaL_register().

Referenced by luaopen_base().

costatus()

static int costatus ( lua_State * L, lua_State * co )

static

Definition at line 490 of file lua-5.1.5/src/lbaselib.c.

                                                  {
  if (L == co) return CO_RUN;
  switch (lua_status(co)) {
    case LUA_YIELD:
      return CO_SUS;
    case 0: {
      lua_Debug ar;
      if (lua_getstack(co, 0, &ar) > 0)  /* does it have frames? */
        return CO_NOR;  /* it is running */
      else if (lua_gettop(co) == 0)
          return CO_DEAD;
      else
        return CO_SUS;  /* initial state */
    }
    default:  /* some error occured */
      return CO_DEAD;
  }
}

References CO_DEAD, CO_NOR, CO_RUN, CO_SUS, lua_getstack(), lua_gettop(), lua_status(), and LUA_YIELD.

Referenced by auxresume(), and luaB_costatus().

generic_reader()

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

static

Definition at line 297 of file lua-5.1.5/src/lbaselib.c.

                                                                         {
  (void)ud;  /* to avoid warnings */
  luaL_checkstack(L, 2, "too many nested functions");
  lua_pushvalue(L, 1);  /* get function */
  lua_call(L, 0, 1);  /* call it */
  if (lua_isnil(L, -1)) {
    *size = 0;
    return NULL;
  }
  else if (lua_isstring(L, -1)) {
    lua_replace(L, 3);  /* save string in a reserved stack slot */
    return lua_tolstring(L, 3, size);
  }
  else luaL_error(L, "reader function must return a string");
  return NULL;  /* to avoid warnings */
}

References lua_call, lua_isnil, lua_isstring(), lua_pushvalue(), lua_replace, lua_tolstring(), luaL_checkstack(), luaL_error(), and NULL.

Referenced by luaB_load().

getfunc()

static void getfunc ( lua_State * L, int opt )

static

Definition at line 117 of file lua-5.1.5/src/lbaselib.c.

                                            {
  if (lua_isfunction(L, 1)) lua_pushvalue(L, 1);
  else {
    lua_Debug ar;
    int level = opt ? luaL_optint(L, 1, 1) : luaL_checkint(L, 1);
    luaL_argcheck(L, level >= 0, 1, "level must be non-negative");
    if (lua_getstack(L, level, &ar) == 0)
      luaL_argerror(L, 1, "invalid level");
    lua_getinfo(L, "f", &ar);
    if (lua_isnil(L, -1))
      luaL_error(L, "no function environment for tail call at level %d",
                    level);
  }
}

References lua_getinfo(), lua_getstack(), lua_isfunction, lua_isnil, lua_pushvalue(), luaL_argcheck, luaL_argerror(), luaL_checkint, luaL_error(), and luaL_optint.

Referenced by luaB_getfenv(), and luaB_setfenv().

ipairsaux()

static int ipairsaux ( lua_State * L )

static

Definition at line 247 of file lua-5.1.5/src/lbaselib.c.

                                    {
  int i = luaL_checkint(L, 2);
  luaL_checktype(L, 1, LUA_TTABLE);
  i++;  /* next value */
  lua_pushinteger(L, i);
  lua_rawgeti(L, 1, i);
  return (lua_isnil(L, -1)) ? 0 : 2;
}

References lua_isnil, lua_pushinteger(), lua_rawgeti(), LUA_TTABLE, luaL_checkint, and luaL_checktype().

Referenced by base_open().

load_aux()

static int load_aux ( lua_State * L, int status )

static

Definition at line 266 of file lua-5.1.5/src/lbaselib.c.

                                               {
  if (status == 0)  /* OK? */
    return 1;
  else {
    lua_pushnil(L);
    lua_insert(L, -2);  /* put before error message */
    return 2;  /* return nil plus error message */
  }
}

References lua_insert, and lua_pushnil().

Referenced by luaB_load(), luaB_loadfile(), and luaB_loadstring().

luaB_assert()

static int luaB_assert ( lua_State * L )

static

Definition at line 334 of file lua-5.1.5/src/lbaselib.c.

                                      {
  luaL_checkany(L, 1);
  if (!lua_toboolean(L, 1))
    return luaL_error(L, "%s", luaL_optstring(L, 2, "assertion failed!"));
  return lua_gettop(L);
}

References lua_gettop(), lua_toboolean(), luaL_checkany(), luaL_error(), and luaL_optstring.

luaB_auxwrap()

static int luaB_auxwrap ( lua_State * L )

static

Definition at line 561 of file lua-5.1.5/src/lbaselib.c.

                                       {
  lua_State *co = lua_tothread(L, lua_upvalueindex(1));
  int r = auxresume(L, co, lua_gettop(L));
  if (r < 0) {
    if (lua_isstring(L, -1)) {  /* error object is a string? */
      luaL_where(L, 1);  /* add extra info */
      lua_insert(L, -2);
      lua_concat(L, 2);
    }
    lua_error(L);  /* propagate error */
  }
  return r;
}

References auxresume(), lua_concat(), lua_error(), lua_gettop(), lua_insert, lua_isstring(), lua_tothread(), lua_upvalueindex, and luaL_where().

Referenced by luaB_cowrap().

luaB_cocreate()

static int luaB_cocreate ( lua_State * L )

static

Definition at line 576 of file lua-5.1.5/src/lbaselib.c.

                                        {
  lua_State *NL = lua_newthread(L);
  luaL_argcheck(L, lua_isfunction(L, 1) && !lua_iscfunction(L, 1), 1,
    "Lua function expected");
  lua_pushvalue(L, 1);  /* move function to top */
  lua_xmove(L, NL, 1);  /* move function from L to NL */
  return 1;
}

References lua_iscfunction(), lua_isfunction, lua_newthread(), lua_pushvalue(), lua_xmove(), and luaL_argcheck.

Referenced by luaB_cowrap().

luaB_collectgarbage()

static int luaB_collectgarbage ( lua_State * L )

static

Definition at line 193 of file lua-5.1.5/src/lbaselib.c.

                                              {
  static const char *const opts[] = {"stop", "restart", "collect",
    "count", "step", "setpause", "setstepmul", NULL};
  static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT,
    LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL};
  int o = luaL_checkoption(L, 1, "collect", opts);
  int ex = luaL_optint(L, 2, 0);
  int res = lua_gc(L, optsnum[o], ex);
  switch (optsnum[o]) {
    case LUA_GCCOUNT: {
      int b = lua_gc(L, LUA_GCCOUNTB, 0);
      lua_pushnumber(L, res + ((lua_Number)b/1024));
      return 1;
    }
    case LUA_GCSTEP: {
      lua_pushboolean(L, res);
      return 1;
    }
    default: {
      lua_pushnumber(L, res);
      return 1;
    }
  }
}

References lua_gc(), LUA_GCCOLLECT, LUA_GCCOUNT, LUA_GCCOUNTB, LUA_GCRESTART, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL, LUA_GCSTEP, LUA_GCSTOP, lua_pushboolean(), lua_pushnumber(), luaL_checkoption(), luaL_optint, and NULL.

luaB_coresume()

static int luaB_coresume ( lua_State * L )

static

Definition at line 543 of file lua-5.1.5/src/lbaselib.c.

                                        {
  lua_State *co = lua_tothread(L, 1);
  int r;
  luaL_argcheck(L, co, 1, "coroutine expected");
  r = auxresume(L, co, lua_gettop(L) - 1);
  if (r < 0) {
    lua_pushboolean(L, 0);
    lua_insert(L, -2);
    return 2;  /* return false + error message */
  }
  else {
    lua_pushboolean(L, 1);
    lua_insert(L, -(r + 1));
    return r + 1;  /* return true + `resume' returns */
  }
}

References auxresume(), lua_gettop(), lua_insert, lua_pushboolean(), lua_tothread(), and luaL_argcheck.

luaB_corunning()

static int luaB_corunning ( lua_State * L )

static

Definition at line 598 of file lua-5.1.5/src/lbaselib.c.

                                         {
  if (lua_pushthread(L))
    lua_pushnil(L);  /* main thread is not a coroutine */
  return 1;
}

References lua_pushnil(), and lua_pushthread().

luaB_costatus()

static int luaB_costatus ( lua_State * L )

static

Definition at line 510 of file lua-5.1.5/src/lbaselib.c.

                                        {
  lua_State *co = lua_tothread(L, 1);
  luaL_argcheck(L, co, 1, "coroutine expected");
  lua_pushstring(L, statnames[costatus(L, co)]);
  return 1;
}

References costatus(), lua_pushstring(), lua_tothread(), luaL_argcheck, and statnames.

luaB_cowrap()

static int luaB_cowrap ( lua_State * L )

static

Definition at line 586 of file lua-5.1.5/src/lbaselib.c.

                                      {
  luaB_cocreate(L);
  lua_pushcclosure(L, luaB_auxwrap, 1);
  return 1;
}

References lua_pushcclosure(), luaB_auxwrap(), and luaB_cocreate().

luaB_dofile()

static int luaB_dofile ( lua_State * L )

static

Definition at line 325 of file lua-5.1.5/src/lbaselib.c.

                                      {
  const char *fname = luaL_optstring(L, 1, NULL);
  int n = lua_gettop(L);
  if (luaL_loadfile(L, fname) != 0) lua_error(L);
  lua_call(L, 0, LUA_MULTRET);
  return lua_gettop(L) - n;
}

References lua_call, lua_error(), lua_gettop(), LUA_MULTRET, luaL_loadfile, luaL_optstring, and NULL.

luaB_error()

static int luaB_error ( lua_State * L )

static

Definition at line 81 of file lua-5.1.5/src/lbaselib.c.

                                     {
  int level = luaL_optint(L, 2, 1);
  lua_settop(L, 1);
  if (lua_isstring(L, 1) && level > 0) {  /* add extra information? */
    luaL_where(L, level);
    lua_pushvalue(L, 1);
    lua_concat(L, 2);
  }
  return lua_error(L);
}

References lua_concat(), lua_error(), lua_isstring(), lua_pushvalue(), lua_settop(), luaL_optint, and luaL_where().

luaB_gcinfo()

static int luaB_gcinfo ( lua_State * L )

static

Definition at line 187 of file lua-5.1.5/src/lbaselib.c.

                                      {
  lua_pushinteger(L, lua_getgccount(L));
  return 1;
}

References lua_getgccount, and lua_pushinteger().

luaB_getfenv()

static int luaB_getfenv ( lua_State * L )

static

Definition at line 133 of file lua-5.1.5/src/lbaselib.c.

                                       {
  getfunc(L, 1);
  if (lua_iscfunction(L, -1))  /* is a C function? */
    lua_pushvalue(L, LUA_GLOBALSINDEX);  /* return the thread's global env. */
  else
    lua_getfenv(L, -1);
  return 1;
}

References getfunc(), lua_getfenv(), LUA_GLOBALSINDEX, lua_iscfunction(), and lua_pushvalue().

luaB_getmetatable()

static int luaB_getmetatable ( lua_State * L )

static

Definition at line 93 of file lua-5.1.5/src/lbaselib.c.

                                            {
  luaL_checkany(L, 1);
  if (!lua_getmetatable(L, 1)) {
    lua_pushnil(L);
    return 1;  /* no metatable */
  }
  luaL_getmetafield(L, 1, "__metatable");
  return 1;  /* returns either __metatable field (if present) or metatable */
}

References lua_getmetatable(), lua_pushnil(), luaL_checkany(), and luaL_getmetafield().

luaB_ipairs()

static int luaB_ipairs ( lua_State * L )

static

Definition at line 257 of file lua-5.1.5/src/lbaselib.c.

                                      {
  luaL_checktype(L, 1, LUA_TTABLE);
  lua_pushvalue(L, lua_upvalueindex(1));  /* return generator, */
  lua_pushvalue(L, 1);  /* state, */
  lua_pushinteger(L, 0);  /* and initial value */
  return 3;
}

References lua_pushinteger(), lua_pushvalue(), LUA_TTABLE, lua_upvalueindex, and luaL_checktype().

Referenced by base_open().

luaB_load()

static int luaB_load ( lua_State * L )

static

Definition at line 315 of file lua-5.1.5/src/lbaselib.c.

                                    {
  int status;
  const char *cname = luaL_optstring(L, 2, "=(load)");
  luaL_checktype(L, 1, LUA_TFUNCTION);
  lua_settop(L, 3);  /* function, eventual name, plus one reserved slot */
  status = lua_load(L, generic_reader, NULL, cname);
  return load_aux(L, status);
}

References generic_reader(), load_aux(), lua_load(), lua_settop(), LUA_TFUNCTION, luaL_checktype(), luaL_optstring, and NULL.

luaB_loadfile()

static int luaB_loadfile ( lua_State * L )

static

Definition at line 285 of file lua-5.1.5/src/lbaselib.c.

                                        {
  const char *fname = luaL_optstring(L, 1, NULL);
  return load_aux(L, luaL_loadfile(L, fname));
}

References load_aux(), luaL_loadfile, luaL_optstring, and NULL.

luaB_loadstring()

static int luaB_loadstring ( lua_State * L )

static

Definition at line 277 of file lua-5.1.5/src/lbaselib.c.

                                          {
  size_t l;
  const char *s = luaL_checklstring(L, 1, &l);
  const char *chunkname = luaL_optstring(L, 2, s);
  return load_aux(L, luaL_loadbuffer(L, s, l, chunkname));
}

References load_aux(), luaL_checklstring(), luaL_loadbuffer, luaL_optstring, and s.

luaB_newproxy()

static int luaB_newproxy ( lua_State * L )

static

Definition at line 421 of file lua-5.1.5/src/lbaselib.c.

                                        {
  lua_settop(L, 1);
  lua_newuserdata(L, 0);  /* create proxy */
  if (lua_toboolean(L, 1) == 0)
    return 1;  /* no metatable */
  else if (lua_isboolean(L, 1)) {
    lua_newtable(L);  /* create a new metatable `m' ... */
    lua_pushvalue(L, -1);  /* ... and mark `m' as a valid metatable */
    lua_pushboolean(L, 1);
    lua_rawset(L, lua_upvalueindex(1));  /* weaktable[m] = true */
  }
  else {
    int validproxy = 0;  /* to check if weaktable[metatable(u)] == true */
    if (lua_getmetatable(L, 1)) {
      lua_rawget(L, lua_upvalueindex(1));
      validproxy = lua_toboolean(L, -1);
      lua_pop(L, 1);  /* remove value */
    }
    luaL_argcheck(L, validproxy, 1, "boolean or proxy expected");
    lua_getmetatable(L, 1);  /* metatable is valid; get it */
  }
  lua_setmetatable(L, 2);
  return 1;
}

References lua_getmetatable(), lua_isboolean, lua_newtable, lua_newuserdata, lua_pop, lua_pushboolean(), lua_pushvalue(), lua_rawget(), lua_rawset(), lua_setmetatable(), lua_settop(), lua_toboolean(), lua_upvalueindex, and luaL_argcheck.

Referenced by base_open().

luaB_next()

static int luaB_next ( lua_State * L )

static

Definition at line 226 of file lua-5.1.5/src/lbaselib.c.

                                    {
  luaL_checktype(L, 1, LUA_TTABLE);
  lua_settop(L, 2);  /* create a 2nd argument if there isn't one */
  if (lua_next(L, 1))
    return 2;
  else {
    lua_pushnil(L);
    return 1;
  }
}

References lua_next(), lua_pushnil(), lua_settop(), LUA_TTABLE, and luaL_checktype().

Referenced by base_open().

luaB_pairs()

static int luaB_pairs ( lua_State * L )

static

Definition at line 238 of file lua-5.1.5/src/lbaselib.c.

                                     {
  luaL_checktype(L, 1, LUA_TTABLE);
  lua_pushvalue(L, lua_upvalueindex(1));  /* return generator, */
  lua_pushvalue(L, 1);  /* state, */
  lua_pushnil(L);  /* and initial value */
  return 3;
}

References lua_pushnil(), lua_pushvalue(), LUA_TTABLE, lua_upvalueindex, and luaL_checktype().

Referenced by base_open().

luaB_pcall()

static int luaB_pcall ( lua_State * L )

static

Definition at line 374 of file lua-5.1.5/src/lbaselib.c.

                                     {
  int status;
  luaL_checkany(L, 1);
  status = lua_pcall(L, lua_gettop(L) - 1, LUA_MULTRET, 0);
  lua_pushboolean(L, (status == 0));
  lua_insert(L, 1);
  return lua_gettop(L);  /* return status + all results */
}

References lua_gettop(), lua_insert, LUA_MULTRET, lua_pcall, lua_pushboolean(), and luaL_checkany().

luaB_print()

static int luaB_print ( lua_State * L )

static

Definition at line 31 of file lua-5.1.5/src/lbaselib.c.

                                     {
  int n = lua_gettop(L);  /* number of arguments */
  int i;
  lua_getglobal(L, "tostring");
  for (i=1; i<=n; i++) {
    const char *s;
    lua_pushvalue(L, -1);  /* function to be called */
    lua_pushvalue(L, i);   /* value to print */
    lua_call(L, 1, 1);
    s = lua_tostring(L, -1);  /* get result */
    if (s == NULL)
      return luaL_error(L, LUA_QL("tostring") " must return a string to "
                           LUA_QL("print"));
    if (i>1) fputs("\t", stdout);
    fputs(s, stdout);
    lua_pop(L, 1);  /* pop result */
  }
  fputs("\n", stdout);
  return 0;
}

References lua_call, lua_getglobal, lua_gettop(), lua_pop, lua_pushvalue(), LUA_QL, lua_tostring, luaL_error(), NULL, and s.

luaB_rawequal()

static int luaB_rawequal ( lua_State * L )

static

Definition at line 161 of file lua-5.1.5/src/lbaselib.c.

                                        {
  luaL_checkany(L, 1);
  luaL_checkany(L, 2);
  lua_pushboolean(L, lua_rawequal(L, 1, 2));
  return 1;
}

References lua_pushboolean(), lua_rawequal(), and luaL_checkany().

luaB_rawget()

static int luaB_rawget ( lua_State * L )

static

Definition at line 169 of file lua-5.1.5/src/lbaselib.c.

                                      {
  luaL_checktype(L, 1, LUA_TTABLE);
  luaL_checkany(L, 2);
  lua_settop(L, 2);
  lua_rawget(L, 1);
  return 1;
}

References lua_rawget(), lua_settop(), LUA_TTABLE, luaL_checkany(), and luaL_checktype().

luaB_rawset()

static int luaB_rawset ( lua_State * L )

static

Definition at line 177 of file lua-5.1.5/src/lbaselib.c.

                                      {
  luaL_checktype(L, 1, LUA_TTABLE);
  luaL_checkany(L, 2);
  luaL_checkany(L, 3);
  lua_settop(L, 3);
  lua_rawset(L, 1);
  return 1;
}

References lua_rawset(), lua_settop(), LUA_TTABLE, luaL_checkany(), and luaL_checktype().

luaB_select()

static int luaB_select ( lua_State * L )

static

Definition at line 358 of file lua-5.1.5/src/lbaselib.c.

                                      {
  int n = lua_gettop(L);
  if (lua_type(L, 1) == LUA_TSTRING && *lua_tostring(L, 1) == '#') {
    lua_pushinteger(L, n-1);
    return 1;
  }
  else {
    int i = luaL_checkint(L, 1);
    if (i < 0) i = n + i;
    else if (i > n) i = n;
    luaL_argcheck(L, 1 <= i, 1, "index out of range");
    return n - i;
  }
}

References lua_gettop(), lua_pushinteger(), lua_tostring, LUA_TSTRING, lua_type(), luaL_argcheck, and luaL_checkint.

luaB_setfenv()

static int luaB_setfenv ( lua_State * L )

static

Definition at line 143 of file lua-5.1.5/src/lbaselib.c.

                                       {
  luaL_checktype(L, 2, LUA_TTABLE);
  getfunc(L, 0);
  lua_pushvalue(L, 2);
  if (lua_isnumber(L, 1) && lua_tonumber(L, 1) == 0) {
    /* change environment of current thread */
    lua_pushthread(L);
    lua_insert(L, -2);
    lua_setfenv(L, -2);
    return 0;
  }
  else if (lua_iscfunction(L, -2) || lua_setfenv(L, -2) == 0)
    luaL_error(L,
          LUA_QL("setfenv") " cannot change environment of given object");
  return 1;
}

References getfunc(), lua_insert, lua_iscfunction(), lua_isnumber(), lua_pushthread(), lua_pushvalue(), LUA_QL, lua_setfenv(), lua_tonumber, LUA_TTABLE, luaL_checktype(), and luaL_error().

luaB_setmetatable()

static int luaB_setmetatable ( lua_State * L )

static

Definition at line 104 of file lua-5.1.5/src/lbaselib.c.

                                            {
  int t = lua_type(L, 2);
  luaL_checktype(L, 1, LUA_TTABLE);
  luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
                    "nil or table expected");
  if (luaL_getmetafield(L, 1, "__metatable"))
    luaL_error(L, "cannot change a protected metatable");
  lua_settop(L, 2);
  lua_setmetatable(L, 1);
  return 1;
}

References lua_setmetatable(), lua_settop(), LUA_TNIL, LUA_TTABLE, lua_type(), luaL_argcheck, luaL_checktype(), luaL_error(), and luaL_getmetafield().

luaB_tonumber()

static int luaB_tonumber ( lua_State * L )

static

Definition at line 53 of file lua-5.1.5/src/lbaselib.c.

                                        {
  int base = luaL_optint(L, 2, 10);
  if (base == 10) {  /* standard conversion */
    luaL_checkany(L, 1);
    if (lua_isnumber(L, 1)) {
      lua_pushnumber(L, lua_tonumber(L, 1));
      return 1;
    }
  }
  else {
    const char *s1 = luaL_checkstring(L, 1);
    char *s2;
    unsigned long n;
    luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range");
    n = strtoul(s1, &s2, base);
    if (s1 != s2) {  /* at least one valid digit? */
      while (isspace((unsigned char)(*s2))) s2++;  /* skip trailing spaces */
      if (*s2 == '\0') {  /* no invalid trailing characters? */
        lua_pushnumber(L, (lua_Number)n);
        return 1;
      }
    }
  }
  lua_pushnil(L);  /* else not a number */
  return 1;
}

References lua_isnumber(), lua_pushnil(), lua_pushnumber(), lua_tonumber, luaL_argcheck, luaL_checkany(), luaL_checkstring, and luaL_optint.

luaB_tostring()

static int luaB_tostring ( lua_State * L )

static

Definition at line 396 of file lua-5.1.5/src/lbaselib.c.

                                        {
  luaL_checkany(L, 1);
  if (luaL_callmeta(L, 1, "__tostring"))  /* is there a metafield? */
    return 1;  /* use its value */
  switch (lua_type(L, 1)) {
    case LUA_TNUMBER:
      lua_pushstring(L, lua_tostring(L, 1));
      break;
    case LUA_TSTRING:
      lua_pushvalue(L, 1);
      break;
    case LUA_TBOOLEAN:
      lua_pushstring(L, (lua_toboolean(L, 1) ? "true" : "false"));
      break;
    case LUA_TNIL:
      lua_pushliteral(L, "nil");
      break;
    default:
      lua_pushfstring(L, "%s: %p", luaL_typename(L, 1), lua_topointer(L, 1));
      break;
  }
  return 1;
}

References lua_pushfstring(), lua_pushliteral, lua_pushstring(), lua_pushvalue(), LUA_TBOOLEAN, LUA_TNIL, LUA_TNUMBER, lua_toboolean(), lua_topointer(), lua_tostring, LUA_TSTRING, lua_type(), luaL_callmeta(), luaL_checkany(), and luaL_typename.

luaB_type()

static int luaB_type ( lua_State * L )

static

Definition at line 219 of file lua-5.1.5/src/lbaselib.c.

                                    {
  luaL_checkany(L, 1);
  lua_pushstring(L, luaL_typename(L, 1));
  return 1;
}

References lua_pushstring(), luaL_checkany(), and luaL_typename.

luaB_unpack()

static int luaB_unpack ( lua_State * L )

static

Definition at line 342 of file lua-5.1.5/src/lbaselib.c.

                                      {
  int i, e, n;
  luaL_checktype(L, 1, LUA_TTABLE);
  i = luaL_optint(L, 2, 1);
  e = luaL_opt(L, luaL_checkint, 3, luaL_getn(L, 1));
  if (i > e) return 0;  /* empty range */
  n = e - i + 1;  /* number of elements */
  if (n <= 0 || !lua_checkstack(L, n))  /* n <= 0 means arith. overflow */
    return luaL_error(L, "too many results to unpack");
  lua_rawgeti(L, 1, i);  /* push arg[i] (avoiding overflow problems) */
  while (i++ < e)  /* push arg[i + 1...e] */
    lua_rawgeti(L, 1, i);
  return n;
}

References lua_checkstack(), lua_rawgeti(), LUA_TTABLE, luaL_checkint, luaL_checktype(), luaL_error(), luaL_getn, luaL_opt, and luaL_optint.

luaB_xpcall()

static int luaB_xpcall ( lua_State * L )

static

Definition at line 384 of file lua-5.1.5/src/lbaselib.c.

                                      {
  int status;
  luaL_checkany(L, 2);
  lua_settop(L, 2);
  lua_insert(L, 1);  /* put error function under function to be called */
  status = lua_pcall(L, 0, LUA_MULTRET, 1);
  lua_pushboolean(L, (status == 0));
  lua_replace(L, 1);
  return lua_gettop(L);  /* return status + all results */
}

References lua_gettop(), lua_insert, LUA_MULTRET, lua_pcall, lua_pushboolean(), lua_replace, lua_settop(), and luaL_checkany().

luaB_yield()

static int luaB_yield ( lua_State * L )

static

Definition at line 593 of file lua-5.1.5/src/lbaselib.c.

                                     {
  return lua_yield(L, lua_gettop(L));
}

References lua_gettop(), and lua_yield.

luaopen_base()

LUALIB_API int luaopen_base

(

lua_State *

L

)

Definition at line 648 of file lua-5.1.5/src/lbaselib.c.

                                           {
  base_open(L);
  luaL_register(L, LUA_COLIBNAME, co_funcs);
  return 2;
}

References base_open(), co_funcs, LUA_COLIBNAME, and luaL_register().

Variable Documentation

base_funcs

const luaL_Reg base_funcs[]

static

Initial value:

= {
  {"assert", luaB_assert},
  {"collectgarbage", luaB_collectgarbage},
  {"dofile", luaB_dofile},
  {"error", luaB_error},
  {"gcinfo", luaB_gcinfo},
  {"getfenv", luaB_getfenv},
  {"getmetatable", luaB_getmetatable},
  {"loadfile", luaB_loadfile},
  {"load", luaB_load},
  {"loadstring", luaB_loadstring},
  {"next", luaB_next},
  {"pcall", luaB_pcall},
  {"print", luaB_print},
  {"rawequal", luaB_rawequal},
  {"rawget", luaB_rawget},
  {"rawset", luaB_rawset},
  {"select", luaB_select},
  {"setfenv", luaB_setfenv},
  {"setmetatable", luaB_setmetatable},
  {"tonumber", luaB_tonumber},
  {"tostring", luaB_tostring},
  {"type", luaB_type},
  {"unpack", luaB_unpack},
  {"xpcall", luaB_xpcall},
  {NULL, NULL}
}

Definition at line 447 of file lua-5.1.5/src/lbaselib.c.

                                     {
  {"assert", luaB_assert},
  {"collectgarbage", luaB_collectgarbage},
  {"dofile", luaB_dofile},
  {"error", luaB_error},
  {"gcinfo", luaB_gcinfo},
  {"getfenv", luaB_getfenv},
  {"getmetatable", luaB_getmetatable},
  {"loadfile", luaB_loadfile},
  {"load", luaB_load},
  {"loadstring", luaB_loadstring},
  {"next", luaB_next},
  {"pcall", luaB_pcall},
  {"print", luaB_print},
  {"rawequal", luaB_rawequal},
  {"rawget", luaB_rawget},
  {"rawset", luaB_rawset},
  {"select", luaB_select},
  {"setfenv", luaB_setfenv},
  {"setmetatable", luaB_setmetatable},
  {"tonumber", luaB_tonumber},
  {"tostring", luaB_tostring},
  {"type", luaB_type},
  {"unpack", luaB_unpack},
  {"xpcall", luaB_xpcall},
  {NULL, NULL}
};

Referenced by base_open().

co_funcs

const luaL_Reg co_funcs[]

static

Initial value:

= {
  {"create", luaB_cocreate},
  {"resume", luaB_coresume},
  {"running", luaB_corunning},
  {"status", luaB_costatus},
  {"wrap", luaB_cowrap},
  {"yield", luaB_yield},
  {NULL, NULL}
}

Definition at line 605 of file lua-5.1.5/src/lbaselib.c.

                                   {
  {"create", luaB_cocreate},
  {"resume", luaB_coresume},
  {"running", luaB_corunning},
  {"status", luaB_costatus},
  {"wrap", luaB_cowrap},
  {"yield", luaB_yield},
  {NULL, NULL}
};

Referenced by luaopen_base().

statnames

const char* const statnames[]

static

Initial value:

=
    {"running", "suspended", "normal", "dead"}

Definition at line 487 of file lua-5.1.5/src/lbaselib.c.

    {"running", "suspended", "normal", "dead"};

Referenced by auxresume(), and luaB_costatus().