A modern Music Player Daemon based on Rockbox open source high quality audio player
tsiry-sandratraina.com
libadwaita
audio
rust
zig
deno
mpris
rockbox
mpd
1/*
2** $Id: lbaselib.c,v 1.191.1.6 2008/02/14 16:46:22 roberto Exp $
3** Basic library
4** See Copyright Notice in lua.h
5*/
6
7
8
9#include <ctype.h>
10#include <stdio.h>
11#include <stdlib.h>
12#include <string.h>
13
14#define lbaselib_c
15#define LUA_LIB
16
17#include "lua.h"
18
19#include "lauxlib.h"
20#include "lualib.h"
21
22#ifdef LUA_OPTIMIZE_DEBUG_USER
23#include "lobject.h"
24#include "lstate.h"
25#include "ldebug.h"
26#include "lfunc.h"
27#endif
28
29
30
31
32/*
33** If your system does not support `stdout', you can just remove this function.
34** If you need, you can define your own `print' function, following this
35** model but changing `fputs' to put the strings at a proper place
36** (a console window or a log file, for instance).
37*/
38#if 0
39static int luaB_print (lua_State *L) {
40 int n = lua_gettop(L); /* number of arguments */
41 int i;
42 lua_getglobal(L, "tostring");
43 for (i=1; i<=n; i++) {
44 const char *s;
45 lua_pushvalue(L, -1); /* function to be called */
46 lua_pushvalue(L, i); /* value to print */
47 lua_call(L, 1, 1);
48 s = lua_tostring(L, -1); /* get result */
49 if (s == NULL)
50 return luaL_error(L, LUA_QL("tostring") " must return a string to "
51 LUA_QL("print"));
52 if (i>1) fputs("\t", stdout);
53 fputs(s, stdout);
54 lua_pop(L, 1); /* pop result */
55 }
56 fputs("\n", stdout);
57 return 0;
58}
59#endif
60
61
62static int luaB_tonumber (lua_State *L) {
63 int base = luaL_optint(L, 2, 10);
64 if (base == 10) { /* standard conversion */
65 luaL_checkany(L, 1);
66 if (lua_isnumber(L, 1)) {
67 lua_pushnumber(L, lua_tonumber(L, 1));
68 return 1;
69 }
70 }
71 else {
72 const char *s1 = luaL_checkstring(L, 1);
73 char *s2;
74 unsigned long n;
75 luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range");
76 n = strtoul(s1, &s2, base);
77 if (s1 != s2) { /* at least one valid digit? */
78 while (isspace((unsigned char)(*s2))) s2++; /* skip trailing spaces */
79 if (*s2 == '\0') { /* no invalid trailing characters? */
80 lua_pushnumber(L, (lua_Number)n);
81 return 1;
82 }
83 }
84 }
85 lua_pushnil(L); /* else not a number */
86 return 1;
87}
88
89
90static int luaB_error (lua_State *L) {
91 int level = luaL_optint(L, 2, 1);
92 lua_settop(L, 1);
93 if (lua_isstring(L, 1) && level > 0) { /* add extra information? */
94 luaL_where(L, level);
95 lua_pushvalue(L, 1);
96 lua_concat(L, 2);
97 }
98 return lua_error(L);
99}
100
101
102static int luaB_getmetatable (lua_State *L) {
103 luaL_checkany(L, 1);
104 if (!lua_getmetatable(L, 1)) {
105 lua_pushnil(L);
106 return 1; /* no metatable */
107 }
108 luaL_getmetafield(L, 1, "__metatable");
109 return 1; /* returns either __metatable field (if present) or metatable */
110}
111
112
113static int luaB_setmetatable (lua_State *L) {
114 int t = lua_type(L, 2);
115 luaL_checktype(L, 1, LUA_TTABLE);
116 luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
117 "nil or table expected");
118 if (luaL_getmetafield(L, 1, "__metatable"))
119 luaL_error(L, "cannot change a protected metatable");
120 lua_settop(L, 2);
121 lua_setmetatable(L, 1);
122 return 1;
123}
124
125
126static void getfunc (lua_State *L, int opt) {
127 if (lua_isfunction(L, 1)) lua_pushvalue(L, 1);
128 else {
129 lua_Debug ar;
130 int level = opt ? luaL_optint(L, 1, 1) : luaL_checkint(L, 1);
131 luaL_argcheck(L, level >= 0, 1, "level must be non-negative");
132 if (lua_getstack(L, level, &ar) == 0)
133 luaL_argerror(L, 1, "invalid level");
134 lua_getinfo(L, "f", &ar);
135 if (lua_isnil(L, -1))
136 luaL_error(L, "no function environment for tail call at level %d",
137 level);
138 }
139}
140
141
142static int luaB_getfenv (lua_State *L) {
143 getfunc(L, 1);
144 if (lua_iscfunction(L, -1)) /* is a C function? */
145 lua_pushvalue(L, LUA_GLOBALSINDEX); /* return the thread's global env. */
146 else
147 lua_getfenv(L, -1);
148 return 1;
149}
150
151
152static int luaB_setfenv (lua_State *L) {
153 luaL_checktype(L, 2, LUA_TTABLE);
154 getfunc(L, 0);
155 lua_pushvalue(L, 2);
156 if (lua_isnumber(L, 1) && lua_tonumber(L, 1) == 0) {
157 /* change environment of current thread */
158 lua_pushthread(L);
159 lua_insert(L, -2);
160 lua_setfenv(L, -2);
161 return 0;
162 }
163 else if (lua_iscfunction(L, -2) || lua_setfenv(L, -2) == 0)
164 luaL_error(L,
165 LUA_QL("setfenv") " cannot change environment of given object");
166 return 1;
167}
168
169
170static int luaB_rawequal (lua_State *L) {
171 luaL_checkany(L, 1);
172 luaL_checkany(L, 2);
173 lua_pushboolean(L, lua_rawequal(L, 1, 2));
174 return 1;
175}
176
177
178static int luaB_rawget (lua_State *L) {
179 luaL_checktype(L, 1, LUA_TTABLE);
180 luaL_checkany(L, 2);
181 lua_settop(L, 2);
182 lua_rawget(L, 1);
183 return 1;
184}
185
186static int luaB_rawset (lua_State *L) {
187 luaL_checktype(L, 1, LUA_TTABLE);
188 luaL_checkany(L, 2);
189 luaL_checkany(L, 3);
190 lua_settop(L, 3);
191 lua_rawset(L, 1);
192 return 1;
193}
194
195
196static int luaB_gcinfo (lua_State *L) {
197 lua_pushinteger(L, lua_getgccount(L));
198 return 1;
199}
200
201
202static int luaB_collectgarbage (lua_State *L) {
203 static const char *const opts[] = {"stop", "restart", "collect",
204 "count", "step", "setpause", "setstepmul", NULL};
205 static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT,
206 LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL};
207 int o = luaL_checkoption(L, 1, "collect", opts);
208 int ex = luaL_optint(L, 2, 0);
209 int res = lua_gc(L, optsnum[o], ex);
210 switch (optsnum[o]) {
211 case LUA_GCCOUNT: {
212 int b = lua_gc(L, LUA_GCCOUNTB, 0);
213 lua_pushnumber(L, res + ((lua_Number)b/1024));
214 return 1;
215 }
216 case LUA_GCSTEP: {
217 lua_pushboolean(L, res);
218 return 1;
219 }
220 default: {
221 lua_pushnumber(L, res);
222 return 1;
223 }
224 }
225}
226
227
228static int luaB_type (lua_State *L) {
229 luaL_checkany(L, 1);
230 lua_pushstring(L, luaL_typename(L, 1));
231 return 1;
232}
233
234
235/** $Id: lbaselib.c,v 1.276.1.1 2013/04/12 18:48:47 roberto Exp $ */
236static int pairsmeta (lua_State *L, const char *method, int iszero,
237 lua_CFunction iter) {
238 if (!luaL_getmetafield(L, 1, method)) { /* no metamethod? */
239 luaL_checktype(L, 1, LUA_TTABLE); /* argument must be a table */
240 lua_pushcfunction(L, iter); /* will return generator, */
241 lua_pushvalue(L, 1); /* state, */
242 if (iszero) lua_pushinteger(L, 0); /* and initial value */
243 else lua_pushnil(L);
244 }
245 else {
246 lua_pushvalue(L, 1); /* argument 'self' to metamethod */
247 lua_call(L, 1, 3); /* get 3 values from metamethod */
248 }
249 return 3;
250}
251
252
253static int luaB_next (lua_State *L) {
254 luaL_checktype(L, 1, LUA_TTABLE);
255 lua_settop(L, 2); /* create a 2nd argument if there isn't one */
256 if (lua_next(L, 1))
257 return 2;
258 else {
259 lua_pushnil(L);
260 return 1;
261 }
262}
263
264
265static int luaB_pairs (lua_State *L) {
266 /* pairs function from lua 5.2 */
267 return pairsmeta(L, "__pairs", 0, luaB_next);
268}
269
270
271static int ipairsaux (lua_State *L) {
272 int i = luaL_checkint(L, 2);
273 luaL_checktype(L, 1, LUA_TTABLE);
274 i++; /* next value */
275 lua_pushinteger(L, i);
276 lua_rawgeti(L, 1, i);
277 return (lua_isnil(L, -1)) ? 1 : 2;
278}
279
280
281static int luaB_ipairs (lua_State *L) {
282 return pairsmeta(L, "__ipairs", 1, ipairsaux);
283 /* ipairs function from lua 5.2 */
284}
285
286
287static int load_aux (lua_State *L, int status) {
288 if (status == 0) /* OK? */
289 return 1;
290 else {
291 lua_pushnil(L);
292 lua_insert(L, -2); /* put before error message */
293 return 2; /* return nil plus error message */
294 }
295}
296
297
298static int luaB_loadstring (lua_State *L) {
299 size_t l;
300 const char *s = luaL_checklstring(L, 1, &l);
301 const char *chunkname = luaL_optstring(L, 2, s);
302 return load_aux(L, luaL_loadbuffer(L, s, l, chunkname));
303}
304
305
306static int luaB_loadfile (lua_State *L) {
307 const char *fname = luaL_optstring(L, 1, NULL);
308 return load_aux(L, luaL_loadfile(L, fname));
309}
310
311
312#ifdef LUA_OPTIMIZE_DEBUG_USER
313/* stripdebug([level[, function]]).
314 * level: 1 don't discard debug
315 * 2 discard Local and Upvalue debug info
316 * 3 discard Local, Upvalue and lineno debug info.
317 * function: Function to be stripped as per setfenv except 0 not permitted.
318 * If no arguments then the current default setting is returned.
319 * If function is omitted, this is the default setting for future compiles
320 * The function returns an estimated integer count of the bytes stripped.
321 */
322static int luaB_stripdebug (lua_State *L) {
323 int level;
324
325 if (L->top == L->base) {
326 lua_pushlightuserdata(L, &luaG_stripdebug);
327 lua_gettable(L, LUA_REGISTRYINDEX);
328 if (lua_isnil(L, -1)) {
329 lua_pop(L, 1);
330 lua_pushinteger(L, LUA_OPTIMIZE_DEBUG);
331 }
332 return 1;
333 }
334
335 level = luaL_checkint(L, 1);
336 if ((level <= 0) || (level > 3)) luaL_argerror(L, 1, "must in range 1-3");
337
338 if (L->top == L->base + 1) {
339 /* Store the default level in the registry if no function parameter */
340 lua_pushlightuserdata(L, &luaG_stripdebug);
341 lua_pushinteger(L, level);
342 lua_settable(L, LUA_REGISTRYINDEX);
343 lua_settop(L,0);
344 return 0;
345 }
346
347 if (level == 1) {
348 lua_settop(L,0);
349 lua_pushinteger(L, 0);
350 return 1;
351 }
352
353 if (!lua_isfunction(L, 2)) {
354 int scope = luaL_checkint(L, 2);
355 if (scope > 0) {
356 /* if the function parameter is a +ve integer then climb to find function */
357 lua_Debug ar;
358 lua_pop(L, 1); /* pop level as getinfo will replace it by the function */
359 if (lua_getstack(L, scope, &ar)) {
360 lua_getinfo(L, "f", &ar);
361 }
362 }
363 }
364
365 if(!lua_isfunction(L, 2) || lua_iscfunction(L, -1)) luaL_argerror(L, 2, "must be a Lua Function");
366 // lua_lock(L);
367 Proto *f = clvalue(L->base + 1)->l.p;
368 // lua_unlock(L);
369 lua_settop(L,0);
370 lua_pushinteger(L, luaG_stripdebug(L, f, level, 16));
371 return 1;
372}
373#endif
374
375
376/*
377** Reader for generic `load' function: `lua_load' uses the
378** stack for internal stuff, so the reader cannot change the
379** stack top. Instead, it keeps its resulting string in a
380** reserved slot inside the stack.
381*/
382static const char *generic_reader (lua_State *L, void *ud, size_t *size) {
383 (void)ud; /* to avoid warnings */
384 luaL_checkstack(L, 2, "too many nested functions");
385 lua_pushvalue(L, 1); /* get function */
386 lua_call(L, 0, 1); /* call it */
387 if (lua_isnil(L, -1)) {
388 *size = 0;
389 return NULL;
390 }
391 else if (lua_isstring(L, -1)) {
392 lua_replace(L, 3); /* save string in a reserved stack slot */
393 return lua_tolstring(L, 3, size);
394 }
395 else luaL_error(L, "reader function must return a string");
396 return NULL; /* to avoid warnings */
397}
398
399
400static int luaB_load (lua_State *L) {
401 int status;
402 const char *cname = luaL_optstring(L, 2, "=(load)");
403 luaL_checktype(L, 1, LUA_TFUNCTION);
404 lua_settop(L, 3); /* function, eventual name, plus one reserved slot */
405 status = lua_load(L, generic_reader, NULL, cname);
406 return load_aux(L, status);
407}
408
409
410static int luaB_dofile (lua_State *L) {
411 const char *fname = luaL_optstring(L, 1, NULL);
412 int n = lua_gettop(L);
413 if (luaL_loadfile(L, fname) != 0) lua_error(L);
414 lua_call(L, 0, LUA_MULTRET);
415 return lua_gettop(L) - n;
416}
417
418
419static int luaB_assert (lua_State *L) {
420 luaL_checkany(L, 1);
421 if (!lua_toboolean(L, 1))
422 return luaL_error(L, "%s", luaL_optstring(L, 2, "assertion failed!"));
423 return lua_gettop(L);
424}
425
426
427static int luaB_unpack (lua_State *L) {
428 int i, e, n;
429 luaL_checktype(L, 1, LUA_TTABLE);
430 i = luaL_optint(L, 2, 1);
431 e = luaL_opt(L, luaL_checkint, 3, luaL_getn(L, 1));
432 if (i > e) return 0; /* empty range */
433 n = e - i + 1; /* number of elements */
434 if (n <= 0 || !lua_checkstack(L, n)) /* n <= 0 means arith. overflow */
435 return luaL_error(L, "too many results to unpack");
436 lua_rawgeti(L, 1, i); /* push arg[i] (avoiding overflow problems) */
437 while (i++ < e) /* push arg[i + 1...e] */
438 lua_rawgeti(L, 1, i);
439 return n;
440}
441
442
443static int luaB_select (lua_State *L) {
444 int n = lua_gettop(L);
445 if (lua_type(L, 1) == LUA_TSTRING && *lua_tostring(L, 1) == '#') {
446 lua_pushinteger(L, n-1);
447 return 1;
448 }
449 else {
450 int i = luaL_checkint(L, 1);
451 if (i < 0) i = n + i;
452 else if (i > n) i = n;
453 luaL_argcheck(L, 1 <= i, 1, "index out of range");
454 return n - i;
455 }
456}
457
458
459static int luaB_pcall (lua_State *L) {
460 int status;
461 luaL_checkany(L, 1);
462 status = lua_pcall(L, lua_gettop(L) - 1, LUA_MULTRET, 0);
463 lua_pushboolean(L, (status == 0));
464 lua_insert(L, 1);
465 return lua_gettop(L); /* return status + all results */
466}
467
468
469static int luaB_xpcall (lua_State *L) {
470 int status;
471 luaL_checkany(L, 2);
472 lua_settop(L, 2);
473 lua_insert(L, 1); /* put error function under function to be called */
474 status = lua_pcall(L, 0, LUA_MULTRET, 1);
475 lua_pushboolean(L, (status == 0));
476 lua_replace(L, 1);
477 return lua_gettop(L); /* return status + all results */
478}
479
480
481static int luaB_tostring (lua_State *L) {
482 luaL_checkany(L, 1);
483 if (luaL_callmeta(L, 1, "__tostring")) /* is there a metafield? */
484 return 1; /* use its value */
485 switch (lua_type(L, 1)) {
486 case LUA_TNUMBER:
487 lua_pushstring(L, lua_tostring(L, 1));
488 break;
489 case LUA_TSTRING:
490 lua_pushvalue(L, 1);
491 break;
492 case LUA_TBOOLEAN:
493 lua_pushstring(L, (lua_toboolean(L, 1) ? "true" : "false"));
494 break;
495 case LUA_TNIL:
496 lua_pushliteral(L, "nil");
497 break;
498 default:
499 lua_pushfstring(L, "%s: %p", luaL_typename(L, 1), lua_topointer(L, 1));
500 break;
501 }
502 return 1;
503}
504
505
506static int luaB_newproxy (lua_State *L) {
507 lua_settop(L, 1);
508 lua_newuserdata(L, 0); /* create proxy */
509 if (lua_toboolean(L, 1) == 0)
510 return 1; /* no metatable */
511 else if (lua_isboolean(L, 1)) {
512 lua_newtable(L); /* create a new metatable `m' ... */
513 lua_pushvalue(L, -1); /* ... and mark `m' as a valid metatable */
514 lua_pushboolean(L, 1);
515 lua_rawset(L, lua_upvalueindex(1)); /* weaktable[m] = true */
516 }
517 else {
518 int validproxy = 0; /* to check if weaktable[metatable(u)] == true */
519 if (lua_getmetatable(L, 1)) {
520 lua_rawget(L, lua_upvalueindex(1));
521 validproxy = lua_toboolean(L, -1);
522 lua_pop(L, 1); /* remove value */
523 }
524 luaL_argcheck(L, validproxy, 1, "boolean or proxy expected");
525 lua_getmetatable(L, 1); /* metatable is valid; get it */
526 }
527 lua_setmetatable(L, 2);
528 return 1;
529}
530
531
532static const luaL_Reg base_funcs[] = {
533 {"assert", luaB_assert},
534 {"collectgarbage", luaB_collectgarbage},
535 {"dofile", luaB_dofile},
536 {"error", luaB_error},
537 {"gcinfo", luaB_gcinfo},
538 {"getfenv", luaB_getfenv},
539 {"getmetatable", luaB_getmetatable},
540 {"ipairs", luaB_ipairs},
541 {"loadfile", luaB_loadfile},
542 {"load", luaB_load},
543 {"loadstring", luaB_loadstring},
544 {"next", luaB_next},
545 {"pairs", luaB_pairs},
546 {"pcall", luaB_pcall},
547#if 0
548 {"print", luaB_print},
549#endif
550 {"rawequal", luaB_rawequal},
551 {"rawget", luaB_rawget},
552 {"rawset", luaB_rawset},
553 {"select", luaB_select},
554 {"setfenv", luaB_setfenv},
555 {"setmetatable", luaB_setmetatable},
556#ifdef LUA_OPTIMIZE_DEBUG_USER
557 {"stripdebug", luaB_stripdebug},
558#endif
559 {"tonumber", luaB_tonumber},
560 {"tostring", luaB_tostring},
561 {"type", luaB_type},
562 {"unpack", luaB_unpack},
563 {"xpcall", luaB_xpcall},
564 {NULL, NULL}
565};
566
567
568/*
569** {======================================================
570** Coroutine library
571** =======================================================
572*/
573
574#define CO_RUN 0 /* running */
575#define CO_SUS 1 /* suspended */
576#define CO_NOR 2 /* 'normal' (it resumed another coroutine) */
577#define CO_DEAD 3
578
579static const char *const statnames[] =
580 {"running", "suspended", "normal", "dead"};
581
582static int costatus (lua_State *L, lua_State *co) {
583 if (L == co) return CO_RUN;
584 switch (lua_status(co)) {
585 case LUA_YIELD:
586 return CO_SUS;
587 case 0: {
588 lua_Debug ar;
589 if (lua_getstack(co, 0, &ar) > 0) /* does it have frames? */
590 return CO_NOR; /* it is running */
591 else if (lua_gettop(co) == 0)
592 return CO_DEAD;
593 else
594 return CO_SUS; /* initial state */
595 }
596 default: /* some error occured */
597 return CO_DEAD;
598 }
599}
600
601
602static int luaB_costatus (lua_State *L) {
603 lua_State *co = lua_tothread(L, 1);
604 luaL_argcheck(L, co, 1, "coroutine expected");
605 lua_pushstring(L, statnames[costatus(L, co)]);
606 return 1;
607}
608
609
610static int auxresume (lua_State *L, lua_State *co, int narg) {
611 int status = costatus(L, co);
612 if (!lua_checkstack(co, narg))
613 luaL_error(L, "too many arguments to resume");
614 if (status != CO_SUS) {
615 lua_pushfstring(L, "cannot resume %s coroutine", statnames[status]);
616 return -1; /* error flag */
617 }
618 lua_xmove(L, co, narg);
619 lua_setlevel(L, co);
620 status = lua_resume(co, narg);
621 if (status == 0 || status == LUA_YIELD) {
622 int nres = lua_gettop(co);
623 if (!lua_checkstack(L, nres + 1))
624 luaL_error(L, "too many results to resume");
625 lua_xmove(co, L, nres); /* move yielded values */
626 return nres;
627 }
628 else {
629 lua_xmove(co, L, 1); /* move error message */
630 return -1; /* error flag */
631 }
632}
633
634
635static int luaB_coresume (lua_State *L) {
636 lua_State *co = lua_tothread(L, 1);
637 int r;
638 luaL_argcheck(L, co, 1, "coroutine expected");
639 r = auxresume(L, co, lua_gettop(L) - 1);
640 if (r < 0) {
641 lua_pushboolean(L, 0);
642 lua_insert(L, -2);
643 return 2; /* return false + error message */
644 }
645 else {
646 lua_pushboolean(L, 1);
647 lua_insert(L, -(r + 1));
648 return r + 1; /* return true + `resume' returns */
649 }
650}
651
652
653static int luaB_auxwrap (lua_State *L) {
654 lua_State *co = lua_tothread(L, lua_upvalueindex(1));
655 int r = auxresume(L, co, lua_gettop(L));
656 if (r < 0) {
657 if (lua_isstring(L, -1)) { /* error object is a string? */
658 luaL_where(L, 1); /* add extra info */
659 lua_insert(L, -2);
660 lua_concat(L, 2);
661 }
662 lua_error(L); /* propagate error */
663 }
664 return r;
665}
666
667
668static int luaB_cocreate (lua_State *L) {
669 lua_State *NL = lua_newthread(L);
670 luaL_argcheck(L, lua_isfunction(L, 1) && !lua_iscfunction(L, 1), 1,
671 "Lua function expected");
672 lua_pushvalue(L, 1); /* move function to top */
673 lua_xmove(L, NL, 1); /* move function from L to NL */
674 return 1;
675}
676
677
678static int luaB_cowrap (lua_State *L) {
679 luaB_cocreate(L);
680 lua_pushcclosure(L, luaB_auxwrap, 1);
681 return 1;
682}
683
684
685static int luaB_yield (lua_State *L) {
686 return lua_yield(L, lua_gettop(L));
687}
688
689
690static int luaB_corunning (lua_State *L) {
691 if (lua_pushthread(L))
692 lua_pushnil(L); /* main thread is not a coroutine */
693 return 1;
694}
695
696
697static const luaL_Reg co_funcs[] = {
698 {"create", luaB_cocreate},
699 {"resume", luaB_coresume},
700 {"running", luaB_corunning},
701 {"status", luaB_costatus},
702 {"wrap", luaB_cowrap},
703 {"yield", luaB_yield},
704 {NULL, NULL}
705};
706
707/* }====================================================== */
708
709
710static void base_open (lua_State *L) {
711 /* set global _G */
712 lua_pushvalue(L, LUA_GLOBALSINDEX);
713 lua_setglobal(L, "_G");
714 /* open lib into global table */
715 luaL_register(L, "_G", base_funcs);
716 lua_pushliteral(L, LUA_VERSION);
717 lua_setglobal(L, "_VERSION"); /* set global _VERSION */
718 /* `newproxy' needs a weaktable as upvalue */
719 lua_createtable(L, 0, 1); /* new table `w' */
720 lua_pushvalue(L, -1); /* `w' will be its own metatable */
721 lua_setmetatable(L, -2);
722 lua_pushliteral(L, "kv");
723 lua_setfield(L, -2, "__mode"); /* metatable(w).__mode = "kv" */
724 lua_pushcclosure(L, luaB_newproxy, 1);
725 lua_setglobal(L, "newproxy"); /* set global `newproxy' */
726}
727
728
729LUALIB_API int luaopen_base (lua_State *L) {
730 base_open(L);
731 luaL_register(L, LUA_COLIBNAME, co_funcs);
732 return 2;
733}
734