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Comparing JSON-XS/XS.xs (file contents):
Revision 1.47 by root, Sun Jul 1 14:08:03 2007 UTC vs.
Revision 1.71 by root, Wed Mar 19 03:17:38 2008 UTC

1#include "EXTERN.h" 1#include "EXTERN.h"
2#include "perl.h" 2#include "perl.h"
3#include "XSUB.h" 3#include "XSUB.h"
4 4
5#include "assert.h" 5#include <assert.h>
6#include "string.h" 6#include <string.h>
7#include "stdlib.h" 7#include <stdlib.h>
8#include "stdio.h" 8#include <stdio.h>
9#include <float.h>
9 10
10#if defined(__BORLANDC__) || defined(_MSC_VER) 11#if defined(__BORLANDC__) || defined(_MSC_VER)
11# define snprintf _snprintf // C compilers have this in stdio.h 12# define snprintf _snprintf // C compilers have this in stdio.h
12#endif 13#endif
13 14
25#define F_SPACE_BEFORE 0x00000020UL 26#define F_SPACE_BEFORE 0x00000020UL
26#define F_SPACE_AFTER 0x00000040UL 27#define F_SPACE_AFTER 0x00000040UL
27#define F_ALLOW_NONREF 0x00000100UL 28#define F_ALLOW_NONREF 0x00000100UL
28#define F_SHRINK 0x00000200UL 29#define F_SHRINK 0x00000200UL
29#define F_ALLOW_BLESSED 0x00000400UL 30#define F_ALLOW_BLESSED 0x00000400UL
30#define F_CONV_BLESSED 0x00000800UL // NYI 31#define F_CONV_BLESSED 0x00000800UL
32#define F_RELAXED 0x00001000UL
33
31#define F_MAXDEPTH 0xf8000000UL 34#define F_MAXDEPTH 0xf8000000UL
32#define S_MAXDEPTH 27 35#define S_MAXDEPTH 27
33#define F_MAXSIZE 0x01f00000UL 36#define F_MAXSIZE 0x01f00000UL
34#define S_MAXSIZE 20 37#define S_MAXSIZE 20
38#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
35 39
36#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH)) 40#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
37#define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE )) 41#define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE ))
38 42
39#define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER 43#define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER
46 50
47#define SB do { 51#define SB do {
48#define SE } while (0) 52#define SE } while (0)
49 53
50#if __GNUC__ >= 3 54#if __GNUC__ >= 3
51# define expect(expr,value) __builtin_expect ((expr),(value)) 55# define expect(expr,value) __builtin_expect ((expr), (value))
52# define inline inline 56# define INLINE static inline
53#else 57#else
54# define expect(expr,value) (expr) 58# define expect(expr,value) (expr)
55# define inline static 59# define INLINE static
56#endif 60#endif
57 61
58#define expect_false(expr) expect ((expr) != 0, 0) 62#define expect_false(expr) expect ((expr) != 0, 0)
59#define expect_true(expr) expect ((expr) != 0, 1) 63#define expect_true(expr) expect ((expr) != 0, 1)
60 64
65#ifdef USE_ITHREADS
66# define JSON_SLOW 1
67# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))
68#else
69# define JSON_SLOW 0
70# define JSON_STASH json_stash
71#endif
72
61static HV *json_stash, *json_boolean_stash; // JSON::XS:: 73static HV *json_stash, *json_boolean_stash; // JSON::XS::
62static SV *json_true, *json_false; 74static SV *json_true, *json_false;
63 75
64typedef struct json { 76typedef struct {
65 U32 flags; 77 U32 flags;
78 SV *cb_object;
79 HV *cb_sk_object;
66} JSON__XS; 80} JSON;
67 81
68///////////////////////////////////////////////////////////////////////////// 82/////////////////////////////////////////////////////////////////////////////
69// utility functions 83// utility functions
70 84
71static UV * 85INLINE void
72SvJSON (SV *sv)
73{
74 if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash))
75 croak ("object is not of type JSON::XS");
76
77 return &SvUVX (SvRV (sv));
78}
79
80static void
81shrink (SV *sv) 86shrink (SV *sv)
82{ 87{
83 sv_utf8_downgrade (sv, 1); 88 sv_utf8_downgrade (sv, 1);
84 if (SvLEN (sv) > SvCUR (sv) + 1) 89 if (SvLEN (sv) > SvCUR (sv) + 1)
85 { 90 {
94// decode an utf-8 character and return it, or (UV)-1 in 99// decode an utf-8 character and return it, or (UV)-1 in
95// case of an error. 100// case of an error.
96// we special-case "safe" characters from U+80 .. U+7FF, 101// we special-case "safe" characters from U+80 .. U+7FF,
97// but use the very good perl function to parse anything else. 102// but use the very good perl function to parse anything else.
98// note that we never call this function for a ascii codepoints 103// note that we never call this function for a ascii codepoints
99inline UV 104INLINE UV
100decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen) 105decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen)
101{ 106{
102 if (expect_false (s[0] > 0xdf || s[0] < 0xc2)) 107 if (expect_false (s[0] > 0xdf || s[0] < 0xc2))
103 return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY); 108 return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
104 else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf) 109 else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)
120typedef struct 125typedef struct
121{ 126{
122 char *cur; // SvPVX (sv) + current output position 127 char *cur; // SvPVX (sv) + current output position
123 char *end; // SvEND (sv) 128 char *end; // SvEND (sv)
124 SV *sv; // result scalar 129 SV *sv; // result scalar
125 struct json json; 130 JSON json;
126 U32 indent; // indentation level 131 U32 indent; // indentation level
127 U32 maxdepth; // max. indentation/recursion level 132 U32 maxdepth; // max. indentation/recursion level
133 UV limit; // escape character values >= this value when encoding
128} enc_t; 134} enc_t;
129 135
130inline void 136INLINE void
131need (enc_t *enc, STRLEN len) 137need (enc_t *enc, STRLEN len)
132{ 138{
133 if (expect_false (enc->cur + len >= enc->end)) 139 if (expect_false (enc->cur + len >= enc->end))
134 { 140 {
135 STRLEN cur = enc->cur - SvPVX (enc->sv); 141 STRLEN cur = enc->cur - SvPVX (enc->sv);
137 enc->cur = SvPVX (enc->sv) + cur; 143 enc->cur = SvPVX (enc->sv) + cur;
138 enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; 144 enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
139 } 145 }
140} 146}
141 147
142inline void 148INLINE void
143encode_ch (enc_t *enc, char ch) 149encode_ch (enc_t *enc, char ch)
144{ 150{
145 need (enc, 1); 151 need (enc, 1);
146 *enc->cur++ = ch; 152 *enc->cur++ = ch;
147} 153}
201 { 207 {
202 uch = ch; 208 uch = ch;
203 clen = 1; 209 clen = 1;
204 } 210 }
205 211
206 if (uch > 0x10FFFFUL) 212 if (uch < 0x20 || uch >= enc->limit)
207 croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
208
209 if (uch < 0x80 || enc->json.flags & F_ASCII || (enc->json.flags & F_LATIN1 && uch > 0xFF))
210 { 213 {
211 if (uch > 0xFFFFUL) 214 if (uch > 0xFFFFUL)
212 { 215 {
216 if (uch > 0x10FFFFUL)
217 croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
218
213 need (enc, len += 11); 219 need (enc, len += 11);
214 sprintf (enc->cur, "\\u%04x\\u%04x", 220 sprintf (enc->cur, "\\u%04x\\u%04x",
215 (int)((uch - 0x10000) / 0x400 + 0xD800), 221 (int)((uch - 0x10000) / 0x400 + 0xD800),
216 (int)((uch - 0x10000) % 0x400 + 0xDC00)); 222 (int)((uch - 0x10000) % 0x400 + 0xDC00));
217 enc->cur += 12; 223 enc->cur += 12;
256 262
257 --len; 263 --len;
258 } 264 }
259} 265}
260 266
261inline void 267INLINE void
262encode_indent (enc_t *enc) 268encode_indent (enc_t *enc)
263{ 269{
264 if (enc->json.flags & F_INDENT) 270 if (enc->json.flags & F_INDENT)
265 { 271 {
266 int spaces = enc->indent * INDENT_STEP; 272 int spaces = enc->indent * INDENT_STEP;
269 memset (enc->cur, ' ', spaces); 275 memset (enc->cur, ' ', spaces);
270 enc->cur += spaces; 276 enc->cur += spaces;
271 } 277 }
272} 278}
273 279
274inline void 280INLINE void
275encode_space (enc_t *enc) 281encode_space (enc_t *enc)
276{ 282{
277 need (enc, 1); 283 need (enc, 1);
278 encode_ch (enc, ' '); 284 encode_ch (enc, ' ');
279} 285}
280 286
281inline void 287INLINE void
282encode_nl (enc_t *enc) 288encode_nl (enc_t *enc)
283{ 289{
284 if (enc->json.flags & F_INDENT) 290 if (enc->json.flags & F_INDENT)
285 { 291 {
286 need (enc, 1); 292 need (enc, 1);
287 encode_ch (enc, '\n'); 293 encode_ch (enc, '\n');
288 } 294 }
289} 295}
290 296
291inline void 297INLINE void
292encode_comma (enc_t *enc) 298encode_comma (enc_t *enc)
293{ 299{
294 encode_ch (enc, ','); 300 encode_ch (enc, ',');
295 301
296 if (enc->json.flags & F_INDENT) 302 if (enc->json.flags & F_INDENT)
307 int i, len = av_len (av); 313 int i, len = av_len (av);
308 314
309 if (enc->indent >= enc->maxdepth) 315 if (enc->indent >= enc->maxdepth)
310 croak ("data structure too deep (hit recursion limit)"); 316 croak ("data structure too deep (hit recursion limit)");
311 317
312 encode_ch (enc, '['); encode_nl (enc); 318 encode_ch (enc, '[');
313 ++enc->indent; 319
320 if (len >= 0)
321 {
322 encode_nl (enc); ++enc->indent;
314 323
315 for (i = 0; i <= len; ++i) 324 for (i = 0; i <= len; ++i)
316 { 325 {
326 SV **svp = av_fetch (av, i, 0);
327
317 encode_indent (enc); 328 encode_indent (enc);
318 encode_sv (enc, *av_fetch (av, i, 0));
319 329
330 if (svp)
331 encode_sv (enc, *svp);
332 else
333 encode_str (enc, "null", 4, 0);
334
320 if (i < len) 335 if (i < len)
321 encode_comma (enc); 336 encode_comma (enc);
322 } 337 }
323 338
339 encode_nl (enc); --enc->indent; encode_indent (enc);
340 }
341
324 encode_nl (enc); 342 encode_ch (enc, ']');
325
326 --enc->indent;
327 encode_indent (enc); encode_ch (enc, ']');
328} 343}
329 344
330static void 345static void
331encode_he (enc_t *enc, HE *he) 346encode_hk (enc_t *enc, HE *he)
332{ 347{
333 encode_ch (enc, '"'); 348 encode_ch (enc, '"');
334 349
335 if (HeKLEN (he) == HEf_SVKEY) 350 if (HeKLEN (he) == HEf_SVKEY)
336 { 351 {
349 encode_ch (enc, '"'); 364 encode_ch (enc, '"');
350 365
351 if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc); 366 if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc);
352 encode_ch (enc, ':'); 367 encode_ch (enc, ':');
353 if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc); 368 if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc);
354 encode_sv (enc, HeVAL (he));
355} 369}
356 370
357// compare hash entries, used when all keys are bytestrings 371// compare hash entries, used when all keys are bytestrings
358static int 372static int
359he_cmp_fast (const void *a_, const void *b_) 373he_cmp_fast (const void *a_, const void *b_)
364 HE *b = *(HE **)b_; 378 HE *b = *(HE **)b_;
365 379
366 STRLEN la = HeKLEN (a); 380 STRLEN la = HeKLEN (a);
367 STRLEN lb = HeKLEN (b); 381 STRLEN lb = HeKLEN (b);
368 382
369 if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) 383 if (!(cmp = memcmp (HeKEY (b), HeKEY (a), lb < la ? lb : la)))
370 cmp = la - lb; 384 cmp = lb - la;
371 385
372 return cmp; 386 return cmp;
373} 387}
374 388
375// compare hash entries, used when some keys are sv's or utf-x 389// compare hash entries, used when some keys are sv's or utf-x
376static int 390static int
377he_cmp_slow (const void *a, const void *b) 391he_cmp_slow (const void *a, const void *b)
378{ 392{
379 return sv_cmp (HeSVKEY_force (*(HE **)a), HeSVKEY_force (*(HE **)b)); 393 return sv_cmp (HeSVKEY_force (*(HE **)b), HeSVKEY_force (*(HE **)a));
380} 394}
381 395
382static void 396static void
383encode_hv (enc_t *enc, HV *hv) 397encode_hv (enc_t *enc, HV *hv)
384{ 398{
399 HE *he;
385 int count, i; 400 int count;
386 401
387 if (enc->indent >= enc->maxdepth) 402 if (enc->indent >= enc->maxdepth)
388 croak ("data structure too deep (hit recursion limit)"); 403 croak ("data structure too deep (hit recursion limit)");
389 404
390 encode_ch (enc, '{'); encode_nl (enc); ++enc->indent; 405 encode_ch (enc, '{');
391 406
392 if ((count = hv_iterinit (hv)))
393 {
394 // for canonical output we have to sort by keys first 407 // for canonical output we have to sort by keys first
395 // actually, this is mostly due to the stupid so-called 408 // actually, this is mostly due to the stupid so-called
396 // security workaround added somewhere in 5.8.x. 409 // security workaround added somewhere in 5.8.x.
397 // that randomises hash orderings 410 // that randomises hash orderings
398 if (enc->json.flags & F_CANONICAL) 411 if (enc->json.flags & F_CANONICAL)
412 {
413 int count = hv_iterinit (hv);
414
415 if (SvMAGICAL (hv))
399 { 416 {
417 // need to count by iterating. could improve by dynamically building the vector below
418 // but I don't care for the speed of this special case.
419 // note also that we will run into undefined behaviour when the two iterations
420 // do not result in the same count, something I might care for in some later release.
421
422 count = 0;
423 while (hv_iternext (hv))
424 ++count;
425
426 hv_iterinit (hv);
427 }
428
429 if (count)
430 {
400 int fast = 1; 431 int i, fast = 1;
401 HE *he;
402#if defined(__BORLANDC__) || defined(_MSC_VER) 432#if defined(__BORLANDC__) || defined(_MSC_VER)
403 HE **hes = _alloca (count * sizeof (HE)); 433 HE **hes = _alloca (count * sizeof (HE));
404#else 434#else
405 HE *hes [count]; // if your compiler dies here, you need to enable C99 mode 435 HE *hes [count]; // if your compiler dies here, you need to enable C99 mode
406#endif 436#endif
433 463
434 FREETMPS; 464 FREETMPS;
435 LEAVE; 465 LEAVE;
436 } 466 }
437 467
438 for (i = 0; i < count; ++i) 468 encode_nl (enc); ++enc->indent;
469
470 while (count--)
439 { 471 {
440 encode_indent (enc); 472 encode_indent (enc);
473 he = hes [count];
441 encode_he (enc, hes [i]); 474 encode_hk (enc, he);
475 encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he));
442 476
443 if (i < count - 1) 477 if (count)
444 encode_comma (enc); 478 encode_comma (enc);
445 } 479 }
446 480
447 encode_nl (enc); 481 encode_nl (enc); --enc->indent; encode_indent (enc);
448 } 482 }
483 }
449 else 484 else
485 {
486 if (hv_iterinit (hv) || SvMAGICAL (hv))
487 if ((he = hv_iternext (hv)))
450 { 488 {
451 HE *he = hv_iternext (hv); 489 encode_nl (enc); ++enc->indent;
452 490
453 for (;;) 491 for (;;)
454 { 492 {
455 encode_indent (enc); 493 encode_indent (enc);
456 encode_he (enc, he); 494 encode_hk (enc, he);
495 encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he));
457 496
458 if (!(he = hv_iternext (hv))) 497 if (!(he = hv_iternext (hv)))
459 break; 498 break;
460 499
461 encode_comma (enc); 500 encode_comma (enc);
462 } 501 }
463 502
464 encode_nl (enc); 503 encode_nl (enc); --enc->indent; encode_indent (enc);
465 } 504 }
466 } 505 }
467 506
468 --enc->indent; encode_indent (enc); encode_ch (enc, '}'); 507 encode_ch (enc, '}');
469} 508}
470 509
471// encode objects, arrays and special \0=false and \1=true values. 510// encode objects, arrays and special \0=false and \1=true values.
472static void 511static void
473encode_rv (enc_t *enc, SV *sv) 512encode_rv (enc_t *enc, SV *sv)
477 SvGETMAGIC (sv); 516 SvGETMAGIC (sv);
478 svt = SvTYPE (sv); 517 svt = SvTYPE (sv);
479 518
480 if (expect_false (SvOBJECT (sv))) 519 if (expect_false (SvOBJECT (sv)))
481 { 520 {
521 HV *stash = !JSON_SLOW || json_boolean_stash
522 ? json_boolean_stash
523 : gv_stashpv ("JSON::XS::Boolean", 1);
524
482 if (SvSTASH (sv) == json_boolean_stash) 525 if (SvSTASH (sv) == stash)
483 { 526 {
484 if (SvIV (sv) == 0) 527 if (SvIV (sv))
528 encode_str (enc, "true", 4, 0);
529 else
485 encode_str (enc, "false", 5, 0); 530 encode_str (enc, "false", 5, 0);
486 else
487 encode_str (enc, "true", 4, 0);
488 } 531 }
489 else 532 else
490 { 533 {
491#if 0 534#if 0
492 if (0 && sv_derived_from (rv, "JSON::Literal")) 535 if (0 && sv_derived_from (rv, "JSON::Literal"))
495 } 538 }
496#endif 539#endif
497 if (enc->json.flags & F_CONV_BLESSED) 540 if (enc->json.flags & F_CONV_BLESSED)
498 { 541 {
499 // we re-bless the reference to get overload and other niceties right 542 // we re-bless the reference to get overload and other niceties right
500 GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 1); 543 GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
501 544
502 if (to_json) 545 if (to_json)
503 { 546 {
504 dSP; 547 dSP;
505 ENTER; 548
506 SAVETMPS;
507 PUSHMARK (SP); 549 ENTER; SAVETMPS; PUSHMARK (SP);
508 XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv))); 550 XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
509 551
510 // calling with G_SCALAR ensures that we always get a 1 reutrn value 552 // calling with G_SCALAR ensures that we always get a 1 return value
511 // check anyways.
512 PUTBACK; 553 PUTBACK;
513 assert (1 == call_sv ((SV *)GvCV (to_json), G_SCALAR)); 554 call_sv ((SV *)GvCV (to_json), G_SCALAR);
514 SPAGAIN; 555 SPAGAIN;
515 556
557 // catch this surprisingly common error
558 if (SvROK (TOPs) && SvRV (TOPs) == sv)
559 croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
560
561 sv = POPs;
562 PUTBACK;
563
516 encode_sv (enc, POPs); 564 encode_sv (enc, sv);
517 565
518 FREETMPS; 566 FREETMPS; LEAVE;
519 LEAVE;
520 } 567 }
521 else if (enc->json.flags & F_ALLOW_BLESSED) 568 else if (enc->json.flags & F_ALLOW_BLESSED)
522 encode_str (enc, "null", 4, 0); 569 encode_str (enc, "null", 4, 0);
523 else 570 else
524 croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it", 571 croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
535 encode_hv (enc, (HV *)sv); 582 encode_hv (enc, (HV *)sv);
536 else if (svt == SVt_PVAV) 583 else if (svt == SVt_PVAV)
537 encode_av (enc, (AV *)sv); 584 encode_av (enc, (AV *)sv);
538 else if (svt < SVt_PVAV) 585 else if (svt < SVt_PVAV)
539 { 586 {
540 if (SvNIOK (sv) && SvIV (sv) == 0) 587 STRLEN len = 0;
588 char *pv = svt ? SvPV (sv, len) : 0;
589
590 if (len == 1 && *pv == '1')
591 encode_str (enc, "true", 4, 0);
592 else if (len == 1 && *pv == '0')
541 encode_str (enc, "false", 5, 0); 593 encode_str (enc, "false", 5, 0);
542 else if (SvNIOK (sv) && SvIV (sv) == 1)
543 encode_str (enc, "true", 4, 0);
544 else 594 else
545 croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", 595 croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
546 SvPV_nolen (sv_2mortal (newRV_inc (sv)))); 596 SvPV_nolen (sv_2mortal (newRV_inc (sv))));
547 } 597 }
548 else 598 else
618 croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this", 668 croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
619 SvPV_nolen (sv), SvFLAGS (sv)); 669 SvPV_nolen (sv), SvFLAGS (sv));
620} 670}
621 671
622static SV * 672static SV *
623encode_json (SV *scalar, struct json *json) 673encode_json (SV *scalar, JSON *json)
624{ 674{
625 enc_t enc; 675 enc_t enc;
626 676
627 if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar)) 677 if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))
628 croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); 678 croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
631 enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); 681 enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
632 enc.cur = SvPVX (enc.sv); 682 enc.cur = SvPVX (enc.sv);
633 enc.end = SvEND (enc.sv); 683 enc.end = SvEND (enc.sv);
634 enc.indent = 0; 684 enc.indent = 0;
635 enc.maxdepth = DEC_DEPTH (enc.json.flags); 685 enc.maxdepth = DEC_DEPTH (enc.json.flags);
686 enc.limit = enc.json.flags & F_ASCII ? 0x000080UL
687 : enc.json.flags & F_LATIN1 ? 0x000100UL
688 : 0x10FFFFUL;
636 689
637 SvPOK_only (enc.sv); 690 SvPOK_only (enc.sv);
638 encode_sv (&enc, scalar); 691 encode_sv (&enc, scalar);
639 692
640 SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); 693 SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
656typedef struct 709typedef struct
657{ 710{
658 char *cur; // current parser pointer 711 char *cur; // current parser pointer
659 char *end; // end of input string 712 char *end; // end of input string
660 const char *err; // parse error, if != 0 713 const char *err; // parse error, if != 0
661 struct json json; 714 JSON json;
662 U32 depth; // recursion depth 715 U32 depth; // recursion depth
663 U32 maxdepth; // recursion depth limit 716 U32 maxdepth; // recursion depth limit
664} dec_t; 717} dec_t;
665 718
666inline void 719INLINE void
720decode_comment (dec_t *dec)
721{
722 // only '#'-style comments allowed a.t.m.
723
724 while (*dec->cur && *dec->cur != 0x0a && *dec->cur != 0x0d)
725 ++dec->cur;
726}
727
728INLINE void
667decode_ws (dec_t *dec) 729decode_ws (dec_t *dec)
668{ 730{
669 for (;;) 731 for (;;)
670 { 732 {
671 char ch = *dec->cur; 733 char ch = *dec->cur;
672 734
673 if (ch > 0x20 735 if (ch > 0x20)
736 {
737 if (expect_false (ch == '#'))
738 {
739 if (dec->json.flags & F_RELAXED)
740 decode_comment (dec);
741 else
742 break;
743 }
744 else
745 break;
746 }
674 || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) 747 else if (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)
675 break; 748 break; // parse error, but let higher level handle it, gives better error messages
676 749
677 ++dec->cur; 750 ++dec->cur;
678 } 751 }
679} 752}
680 753
929 is_nv = 1; 1002 is_nv = 1;
930 } 1003 }
931 1004
932 if (!is_nv) 1005 if (!is_nv)
933 { 1006 {
1007 int len = dec->cur - start;
1008
934 // special case the rather common 1..4-digit-int case, assumes 32 bit ints or so 1009 // special case the rather common 1..5-digit-int case
935 if (*start == '-') 1010 if (*start == '-')
936 switch (dec->cur - start) 1011 switch (len)
937 { 1012 {
938 case 2: return newSViv (-( start [1] - '0' * 1)); 1013 case 2: return newSViv (-( start [1] - '0' * 1));
939 case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11)); 1014 case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));
940 case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111)); 1015 case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
941 case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111)); 1016 case 5: return newSViv (-( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
1017 case 6: return newSViv (-(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));
942 } 1018 }
943 else 1019 else
944 switch (dec->cur - start) 1020 switch (len)
945 { 1021 {
946 case 1: return newSViv ( start [0] - '0' * 1); 1022 case 1: return newSViv ( start [0] - '0' * 1);
947 case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11); 1023 case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
948 case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111); 1024 case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
949 case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111); 1025 case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
1026 case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);
950 } 1027 }
951 1028
952 { 1029 {
953 UV uv; 1030 UV uv;
954 int numtype = grok_number (start, dec->cur - start, &uv); 1031 int numtype = grok_number (start, len, &uv);
955 if (numtype & IS_NUMBER_IN_UV) 1032 if (numtype & IS_NUMBER_IN_UV)
956 if (numtype & IS_NUMBER_NEG) 1033 if (numtype & IS_NUMBER_NEG)
957 { 1034 {
958 if (uv < (UV)IV_MIN) 1035 if (uv < (UV)IV_MIN)
959 return newSViv (-(IV)uv); 1036 return newSViv (-(IV)uv);
960 } 1037 }
961 else 1038 else
962 return newSVuv (uv); 1039 return newSVuv (uv);
963
964 // here would likely be the place for bigint support
965 } 1040 }
966 }
967 1041
968 // if we ever support bigint or bigfloat, this is the place for bigfloat 1042 len -= *start == '-' ? 1 : 0;
1043
1044 // does not fit into IV or UV, try NV
1045 if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)
1046 #if defined (LDBL_DIG)
1047 || (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
1048 #endif
1049 )
1050 // fits into NV without loss of precision
1051 return newSVnv (Atof (start));
1052
1053 // everything else fails, convert it to a string
1054 return newSVpvn (start, dec->cur - start);
1055 }
1056
1057 // loss of precision here
969 return newSVnv (Atof (start)); 1058 return newSVnv (Atof (start));
970 1059
971fail: 1060fail:
972 return 0; 1061 return 0;
973} 1062}
1003 1092
1004 if (*dec->cur != ',') 1093 if (*dec->cur != ',')
1005 ERR (", or ] expected while parsing array"); 1094 ERR (", or ] expected while parsing array");
1006 1095
1007 ++dec->cur; 1096 ++dec->cur;
1097
1098 decode_ws (dec);
1099
1100 if (*dec->cur == ']' && dec->json.flags & F_RELAXED)
1101 {
1102 ++dec->cur;
1103 break;
1104 }
1008 } 1105 }
1009 1106
1010 DEC_DEC_DEPTH; 1107 DEC_DEC_DEPTH;
1011 return newRV_noinc ((SV *)av); 1108 return newRV_noinc ((SV *)av);
1012 1109
1017} 1114}
1018 1115
1019static SV * 1116static SV *
1020decode_hv (dec_t *dec) 1117decode_hv (dec_t *dec)
1021{ 1118{
1119 SV *sv;
1022 HV *hv = newHV (); 1120 HV *hv = newHV ();
1023 1121
1024 DEC_INC_DEPTH; 1122 DEC_INC_DEPTH;
1025 decode_ws (dec); 1123 decode_ws (dec);
1026 1124
1027 if (*dec->cur == '}') 1125 if (*dec->cur == '}')
1028 ++dec->cur; 1126 ++dec->cur;
1029 else 1127 else
1030 for (;;) 1128 for (;;)
1031 { 1129 {
1032 decode_ws (dec); EXPECT_CH ('"'); 1130 EXPECT_CH ('"');
1033 1131
1034 // heuristic: assume that 1132 // heuristic: assume that
1035 // a) decode_str + hv_store_ent are abysmally slow. 1133 // a) decode_str + hv_store_ent are abysmally slow.
1036 // b) most hash keys are short, simple ascii text. 1134 // b) most hash keys are short, simple ascii text.
1037 // => try to "fast-match" such strings to avoid 1135 // => try to "fast-match" such strings to avoid
1051 if (!key) 1149 if (!key)
1052 goto fail; 1150 goto fail;
1053 1151
1054 decode_ws (dec); EXPECT_CH (':'); 1152 decode_ws (dec); EXPECT_CH (':');
1055 1153
1154 decode_ws (dec);
1056 value = decode_sv (dec); 1155 value = decode_sv (dec);
1057 if (!value) 1156 if (!value)
1058 { 1157 {
1059 SvREFCNT_dec (key); 1158 SvREFCNT_dec (key);
1060 goto fail; 1159 goto fail;
1072 int len = p - key; 1171 int len = p - key;
1073 dec->cur = p + 1; 1172 dec->cur = p + 1;
1074 1173
1075 decode_ws (dec); EXPECT_CH (':'); 1174 decode_ws (dec); EXPECT_CH (':');
1076 1175
1176 decode_ws (dec);
1077 value = decode_sv (dec); 1177 value = decode_sv (dec);
1078 if (!value) 1178 if (!value)
1079 goto fail; 1179 goto fail;
1080 1180
1081 hv_store (hv, key, len, value, 0); 1181 hv_store (hv, key, len, value, 0);
1097 1197
1098 if (*dec->cur != ',') 1198 if (*dec->cur != ',')
1099 ERR (", or } expected while parsing object/hash"); 1199 ERR (", or } expected while parsing object/hash");
1100 1200
1101 ++dec->cur; 1201 ++dec->cur;
1202
1203 decode_ws (dec);
1204
1205 if (*dec->cur == '}' && dec->json.flags & F_RELAXED)
1206 {
1207 ++dec->cur;
1208 break;
1209 }
1102 } 1210 }
1103 1211
1104 DEC_DEC_DEPTH; 1212 DEC_DEC_DEPTH;
1105 return newRV_noinc ((SV *)hv); 1213 sv = newRV_noinc ((SV *)hv);
1214
1215 // check filter callbacks
1216 if (dec->json.flags & F_HOOK)
1217 {
1218 if (dec->json.cb_sk_object && HvKEYS (hv) == 1)
1219 {
1220 HE *cb, *he;
1221
1222 hv_iterinit (hv);
1223 he = hv_iternext (hv);
1224 hv_iterinit (hv);
1225
1226 // the next line creates a mortal sv each time its called.
1227 // might want to optimise this for common cases.
1228 cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1229
1230 if (cb)
1231 {
1232 dSP;
1233 int count;
1234
1235 ENTER; SAVETMPS; PUSHMARK (SP);
1236 XPUSHs (HeVAL (he));
1237
1238 PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1239
1240 if (count == 1)
1241 {
1242 sv = newSVsv (POPs);
1243 FREETMPS; LEAVE;
1244 return sv;
1245 }
1246
1247 FREETMPS; LEAVE;
1248 }
1249 }
1250
1251 if (dec->json.cb_object)
1252 {
1253 dSP;
1254 int count;
1255
1256 ENTER; SAVETMPS; PUSHMARK (SP);
1257 XPUSHs (sv_2mortal (sv));
1258
1259 PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1260
1261 if (count == 1)
1262 {
1263 sv = newSVsv (POPs);
1264 FREETMPS; LEAVE;
1265 return sv;
1266 }
1267
1268 SvREFCNT_inc (sv);
1269 FREETMPS; LEAVE;
1270 }
1271 }
1272
1273 return sv;
1106 1274
1107fail: 1275fail:
1108 SvREFCNT_dec (hv); 1276 SvREFCNT_dec (hv);
1109 DEC_DEC_DEPTH; 1277 DEC_DEC_DEPTH;
1110 return 0; 1278 return 0;
1111} 1279}
1112 1280
1113static SV * 1281static SV *
1114decode_sv (dec_t *dec) 1282decode_sv (dec_t *dec)
1115{ 1283{
1116 decode_ws (dec);
1117
1118 // the beauty of JSON: you need exactly one character lookahead 1284 // the beauty of JSON: you need exactly one character lookahead
1119 // to parse anything. 1285 // to parse anything.
1120 switch (*dec->cur) 1286 switch (*dec->cur)
1121 { 1287 {
1122 case '"': ++dec->cur; return decode_str (dec); 1288 case '"': ++dec->cur; return decode_str (dec);
1130 1296
1131 case 't': 1297 case 't':
1132 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) 1298 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1133 { 1299 {
1134 dec->cur += 4; 1300 dec->cur += 4;
1301#if JSON_SLOW
1302 json_true = get_sv ("JSON::XS::true", 1); SvREADONLY_on (json_true);
1303#endif
1135 return SvREFCNT_inc (json_true); 1304 return SvREFCNT_inc (json_true);
1136 } 1305 }
1137 else 1306 else
1138 ERR ("'true' expected"); 1307 ERR ("'true' expected");
1139 1308
1141 1310
1142 case 'f': 1311 case 'f':
1143 if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) 1312 if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1144 { 1313 {
1145 dec->cur += 5; 1314 dec->cur += 5;
1315#if JSON_SLOW
1316 json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);
1317#endif
1146 return SvREFCNT_inc (json_false); 1318 return SvREFCNT_inc (json_false);
1147 } 1319 }
1148 else 1320 else
1149 ERR ("'false' expected"); 1321 ERR ("'false' expected");
1150 1322
1169fail: 1341fail:
1170 return 0; 1342 return 0;
1171} 1343}
1172 1344
1173static SV * 1345static SV *
1174decode_json (SV *string, struct json *json, UV *offset_return) 1346decode_json (SV *string, JSON *json, UV *offset_return)
1175{ 1347{
1176 dec_t dec; 1348 dec_t dec;
1177 UV offset; 1349 UV offset;
1178 SV *sv; 1350 SV *sv;
1179 1351
1196 dec.end = SvEND (string); 1368 dec.end = SvEND (string);
1197 dec.err = 0; 1369 dec.err = 0;
1198 dec.depth = 0; 1370 dec.depth = 0;
1199 dec.maxdepth = DEC_DEPTH (dec.json.flags); 1371 dec.maxdepth = DEC_DEPTH (dec.json.flags);
1200 1372
1373 if (dec.json.cb_object || dec.json.cb_sk_object)
1374 dec.json.flags |= F_HOOK;
1375
1201 *dec.end = 0; // this should basically be a nop, too, but make sure it's there 1376 *dec.end = 0; // this should basically be a nop, too, but make sure it's there
1377
1378 decode_ws (&dec);
1202 sv = decode_sv (&dec); 1379 sv = decode_sv (&dec);
1203 1380
1204 if (!(offset_return || !sv)) 1381 if (!(offset_return || !sv))
1205 { 1382 {
1206 // check for trailing garbage 1383 // check for trailing garbage
1274 json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false); 1451 json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);
1275} 1452}
1276 1453
1277PROTOTYPES: DISABLE 1454PROTOTYPES: DISABLE
1278 1455
1279SV *new (char *dummy) 1456void CLONE (...)
1280 CODE: 1457 CODE:
1281 RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash); 1458 json_stash = 0;
1282 OUTPUT: 1459 json_boolean_stash = 0;
1283 RETVAL
1284 1460
1461void new (char *klass)
1462 PPCODE:
1463{
1464 SV *pv = NEWSV (0, sizeof (JSON));
1465 SvPOK_only (pv);
1466 Zero (SvPVX (pv), 1, JSON);
1467 ((JSON *)SvPVX (pv))->flags = F_DEFAULT;
1468 XPUSHs (sv_2mortal (sv_bless (
1469 newRV_noinc (pv),
1470 strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1471 )));
1472}
1473
1285SV *ascii (SV *self, int enable = 1) 1474void ascii (JSON *self, int enable = 1)
1286 ALIAS: 1475 ALIAS:
1287 ascii = F_ASCII 1476 ascii = F_ASCII
1288 latin1 = F_LATIN1 1477 latin1 = F_LATIN1
1289 utf8 = F_UTF8 1478 utf8 = F_UTF8
1290 indent = F_INDENT 1479 indent = F_INDENT
1294 pretty = F_PRETTY 1483 pretty = F_PRETTY
1295 allow_nonref = F_ALLOW_NONREF 1484 allow_nonref = F_ALLOW_NONREF
1296 shrink = F_SHRINK 1485 shrink = F_SHRINK
1297 allow_blessed = F_ALLOW_BLESSED 1486 allow_blessed = F_ALLOW_BLESSED
1298 convert_blessed = F_CONV_BLESSED 1487 convert_blessed = F_CONV_BLESSED
1488 relaxed = F_RELAXED
1489 PPCODE:
1490{
1491 if (enable)
1492 self->flags |= ix;
1493 else
1494 self->flags &= ~ix;
1495
1496 XPUSHs (ST (0));
1497}
1498
1499void get_ascii (JSON *self)
1500 ALIAS:
1501 get_ascii = F_ASCII
1502 get_latin1 = F_LATIN1
1503 get_utf8 = F_UTF8
1504 get_indent = F_INDENT
1505 get_canonical = F_CANONICAL
1506 get_space_before = F_SPACE_BEFORE
1507 get_space_after = F_SPACE_AFTER
1508 get_allow_nonref = F_ALLOW_NONREF
1509 get_shrink = F_SHRINK
1510 get_allow_blessed = F_ALLOW_BLESSED
1511 get_convert_blessed = F_CONV_BLESSED
1512 get_relaxed = F_RELAXED
1513 PPCODE:
1514 XPUSHs (boolSV (self->flags & ix));
1515
1516void max_depth (JSON *self, UV max_depth = 0x80000000UL)
1517 PPCODE:
1518{
1519 UV log2 = 0;
1520
1521 if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1522
1523 while ((1UL << log2) < max_depth)
1524 ++log2;
1525
1526 self->flags = self->flags & ~F_MAXDEPTH | (log2 << S_MAXDEPTH);
1527
1528 XPUSHs (ST (0));
1529}
1530
1531U32 get_max_depth (JSON *self)
1299 CODE: 1532 CODE:
1300{ 1533 RETVAL = DEC_DEPTH (self->flags);
1301 UV *uv = SvJSON (self);
1302 if (enable)
1303 *uv |= ix;
1304 else
1305 *uv &= ~ix;
1306
1307 RETVAL = newSVsv (self);
1308}
1309 OUTPUT: 1534 OUTPUT:
1310 RETVAL 1535 RETVAL
1311 1536
1312SV *max_depth (SV *self, UV max_depth = 0x80000000UL) 1537void max_size (JSON *self, UV max_size = 0)
1538 PPCODE:
1539{
1540 UV log2 = 0;
1541
1542 if (max_size > 0x80000000UL) max_size = 0x80000000UL;
1543 if (max_size == 1) max_size = 2;
1544
1545 while ((1UL << log2) < max_size)
1546 ++log2;
1547
1548 self->flags = self->flags & ~F_MAXSIZE | (log2 << S_MAXSIZE);
1549
1550 XPUSHs (ST (0));
1551}
1552
1553int get_max_size (JSON *self)
1313 CODE: 1554 CODE:
1314{ 1555 RETVAL = DEC_SIZE (self->flags);
1315 UV *uv = SvJSON (self);
1316 UV log2 = 0;
1317
1318 if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1319
1320 while ((1UL << log2) < max_depth)
1321 ++log2;
1322
1323 *uv = *uv & ~F_MAXDEPTH | (log2 << S_MAXDEPTH);
1324
1325 RETVAL = newSVsv (self);
1326}
1327 OUTPUT: 1556 OUTPUT:
1328 RETVAL 1557 RETVAL
1329 1558
1330SV *max_size (SV *self, UV max_size = 0) 1559void filter_json_object (JSON *self, SV *cb = &PL_sv_undef)
1560 PPCODE:
1561{
1562 SvREFCNT_dec (self->cb_object);
1563 self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;
1564
1565 XPUSHs (ST (0));
1566}
1567
1568void filter_json_single_key_object (JSON *self, SV *key, SV *cb = &PL_sv_undef)
1569 PPCODE:
1570{
1571 if (!self->cb_sk_object)
1572 self->cb_sk_object = newHV ();
1573
1574 if (SvOK (cb))
1575 hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1576 else
1577 {
1578 hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1579
1580 if (!HvKEYS (self->cb_sk_object))
1581 {
1582 SvREFCNT_dec (self->cb_sk_object);
1583 self->cb_sk_object = 0;
1584 }
1585 }
1586
1587 XPUSHs (ST (0));
1588}
1589
1590void encode (JSON *self, SV *scalar)
1591 PPCODE:
1592 XPUSHs (encode_json (scalar, self));
1593
1594void decode (JSON *self, SV *jsonstr)
1595 PPCODE:
1596 XPUSHs (decode_json (jsonstr, self, 0));
1597
1598void decode_prefix (JSON *self, SV *jsonstr)
1599 PPCODE:
1600{
1601 UV offset;
1602 EXTEND (SP, 2);
1603 PUSHs (decode_json (jsonstr, self, &offset));
1604 PUSHs (sv_2mortal (newSVuv (offset)));
1605}
1606
1607void DESTROY (JSON *self)
1331 CODE: 1608 CODE:
1332{ 1609 SvREFCNT_dec (self->cb_sk_object);
1333 UV *uv = SvJSON (self); 1610 SvREFCNT_dec (self->cb_object);
1334 UV log2 = 0;
1335 1611
1336 if (max_size > 0x80000000UL) max_size = 0x80000000UL; 1612PROTOTYPES: ENABLE
1337 if (max_size == 1) max_size = 2;
1338 1613
1339 while ((1UL << log2) < max_size)
1340 ++log2;
1341
1342 *uv = *uv & ~F_MAXSIZE | (log2 << S_MAXSIZE);
1343
1344 RETVAL = newSVsv (self);
1345}
1346 OUTPUT:
1347 RETVAL
1348
1349void encode (SV *self, SV *scalar) 1614void encode_json (SV *scalar)
1350 PPCODE: 1615 PPCODE:
1351{ 1616{
1352 struct json json = { *SvJSON (self) }; 1617 JSON json = { F_DEFAULT | F_UTF8 };
1353 XPUSHs (encode_json (scalar, &json)); 1618 XPUSHs (encode_json (scalar, &json));
1354} 1619}
1355 1620
1356void decode (SV *self, SV *jsonstr) 1621void decode_json (SV *jsonstr)
1357 PPCODE: 1622 PPCODE:
1358{ 1623{
1359 struct json json = { *SvJSON (self) }; 1624 JSON json = { F_DEFAULT | F_UTF8 };
1360 XPUSHs (decode_json (jsonstr, &json, 0)); 1625 XPUSHs (decode_json (jsonstr, &json, 0));
1361} 1626}
1362 1627
1363void decode_prefix (SV *self, SV *jsonstr)
1364 PPCODE:
1365{
1366 UV offset;
1367 struct json json = { *SvJSON (self) };
1368 EXTEND (SP, 2);
1369 PUSHs (decode_json (jsonstr, &json, &offset));
1370 PUSHs (sv_2mortal (newSVuv (offset)));
1371}
1372
1373PROTOTYPES: ENABLE
1374
1375void to_json (SV *scalar)
1376 PPCODE:
1377{
1378 struct json json = { F_DEFAULT | F_UTF8 };
1379 XPUSHs (encode_json (scalar, &json));
1380}
1381
1382void from_json (SV *jsonstr)
1383 PPCODE:
1384{
1385 struct json json = { F_DEFAULT | F_UTF8 };
1386 XPUSHs (decode_json (jsonstr, &json, 0));
1387}
1388

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