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Comparing JSON-XS/XS.xs (file contents):
Revision 1.108 by root, Tue Aug 17 23:27:36 2010 UTC vs.
Revision 1.126 by root, Sun Feb 21 16:18:19 2016 UTC

… …
15 15
16// some old perls do not have this, try to make it work, no 16// some old perls do not have this, try to make it work, no
17// guarantees, though. if it breaks, you get to keep the pieces. 17// guarantees, though. if it breaks, you get to keep the pieces.
18#ifndef UTF8_MAXBYTES 18#ifndef UTF8_MAXBYTES
19# define UTF8_MAXBYTES 13 19# define UTF8_MAXBYTES 13
20#endif
21
22// compatibility with perl <5.18
23#ifndef HvNAMELEN_get
24# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
25#endif
26#ifndef HvNAMELEN
27# define HvNAMELEN(hv) HvNAMELEN_get (hv)
28#endif
29#ifndef HvNAMEUTF8
30# define HvNAMEUTF8(hv) 0
20#endif 31#endif
21 32
22// three extra for rounding, sign, and end of string 33// three extra for rounding, sign, and end of string
23#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3) 34#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)
24 35
… …
33#define F_SHRINK 0x00000200UL 44#define F_SHRINK 0x00000200UL
34#define F_ALLOW_BLESSED 0x00000400UL 45#define F_ALLOW_BLESSED 0x00000400UL
35#define F_CONV_BLESSED 0x00000800UL 46#define F_CONV_BLESSED 0x00000800UL
36#define F_RELAXED 0x00001000UL 47#define F_RELAXED 0x00001000UL
37#define F_ALLOW_UNKNOWN 0x00002000UL 48#define F_ALLOW_UNKNOWN 0x00002000UL
49#define F_ALLOW_TAGS 0x00004000UL
38#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing 50#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
39 51
40#define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER 52#define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER
41 53
42#define INIT_SIZE 32 // initial scalar size to be allocated 54#define INIT_SIZE 32 // initial scalar size to be allocated
… …
67#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)" 79#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"
68 80
69#ifdef USE_ITHREADS 81#ifdef USE_ITHREADS
70# define JSON_SLOW 1 82# define JSON_SLOW 1
71# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1)) 83# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))
84# define BOOL_STASH (bool_stash ? bool_stash : gv_stashpv ("Types::Serialiser::Boolean", 1))
72#else 85#else
73# define JSON_SLOW 0 86# define JSON_SLOW 0
74# define JSON_STASH json_stash 87# define JSON_STASH json_stash
88# define BOOL_STASH bool_stash
75#endif 89#endif
76 90
77static HV *json_stash, *json_boolean_stash; // JSON::XS:: 91// the amount of HEs to allocate on the stack, when sorting keys
78static SV *json_true, *json_false; 92#define STACK_HES 64
93
94static HV *json_stash, *bool_stash; // JSON::XS::, Types::Serialiser::Boolean::
95static SV *bool_true, *bool_false, *sv_json;
79 96
80enum { 97enum {
81 INCR_M_WS = 0, // initial whitespace skipping, must be 0 98 INCR_M_WS = 0, // initial whitespace skipping, must be 0
82 INCR_M_STR, // inside string 99 INCR_M_STR, // inside string
83 INCR_M_BS, // inside backslash 100 INCR_M_BS, // inside backslash
… …
260 } 277 }
261 278
262 // this relies greatly on the quality of the pow () 279 // this relies greatly on the quality of the pow ()
263 // implementation of the platform, but a good 280 // implementation of the platform, but a good
264 // implementation is hard to beat. 281 // implementation is hard to beat.
282 // (IEEE 754 conformant ones are required to be exact)
265 if (postdp) *expo -= eaccum; 283 if (postdp) *expo -= eaccum;
266 *accum += uaccum * Perl_pow (10., *expo); 284 *accum += uaccum * Perl_pow (10., *expo);
267 *expo += eaccum; 285 *expo += eaccum;
268} 286}
269 287
… …
283 // a recursion depth of ten gives us >>500 bits 301 // a recursion depth of ten gives us >>500 bits
284 json_atof_scan1 (s, &accum, &expo, 0, 10); 302 json_atof_scan1 (s, &accum, &expo, 0, 10);
285 303
286 return neg ? -accum : accum; 304 return neg ? -accum : accum;
287} 305}
306
307// target of scalar reference is bool? -1 == nope, 0 == false, 1 == true
308static int
309ref_bool_type (SV *sv)
310{
311 svtype svt = SvTYPE (sv);
312
313 if (svt < SVt_PVAV)
314 {
315 STRLEN len = 0;
316 char *pv = svt ? SvPV (sv, len) : 0;
317
318 if (len == 1)
319 if (*pv == '1')
320 return 1;
321 else if (*pv == '0')
322 return 0;
323
324 }
325
326 return -1;
327}
328
329// returns whether scalar is not a reference in the sense of allow_nonref
330static int
331json_nonref (SV *scalar)
332{
333 if (!SvROK (scalar))
334 return 1;
335
336 scalar = SvRV (scalar);
337
338 if (SvSTASH (scalar) == bool_stash)
339 return 1;
340
341 if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0)
342 return 1;
343
344 return 0;
345}
346
288///////////////////////////////////////////////////////////////////////////// 347/////////////////////////////////////////////////////////////////////////////
289// encoder 348// encoder
290 349
291// structure used for encoding JSON 350// structure used for encoding JSON
292typedef struct 351typedef struct
… …
479 538
480 if (enc->indent >= enc->json.max_depth) 539 if (enc->indent >= enc->json.max_depth)
481 croak (ERR_NESTING_EXCEEDED); 540 croak (ERR_NESTING_EXCEEDED);
482 541
483 encode_ch (enc, '['); 542 encode_ch (enc, '[');
484 543
485 if (len >= 0) 544 if (len >= 0)
486 { 545 {
487 encode_nl (enc); ++enc->indent; 546 encode_nl (enc); ++enc->indent;
488 547
489 for (i = 0; i <= len; ++i) 548 for (i = 0; i <= len; ++i)
… …
501 encode_comma (enc); 560 encode_comma (enc);
502 } 561 }
503 562
504 encode_nl (enc); --enc->indent; encode_indent (enc); 563 encode_nl (enc); --enc->indent; encode_indent (enc);
505 } 564 }
506 565
507 encode_ch (enc, ']'); 566 encode_ch (enc, ']');
508} 567}
509 568
510static void 569static void
511encode_hk (enc_t *enc, HE *he) 570encode_hk (enc_t *enc, HE *he)
… …
515 if (HeKLEN (he) == HEf_SVKEY) 574 if (HeKLEN (he) == HEf_SVKEY)
516 { 575 {
517 SV *sv = HeSVKEY (he); 576 SV *sv = HeSVKEY (he);
518 STRLEN len; 577 STRLEN len;
519 char *str; 578 char *str;
520 579
521 SvGETMAGIC (sv); 580 SvGETMAGIC (sv);
522 str = SvPV (sv, len); 581 str = SvPV (sv, len);
523 582
524 encode_str (enc, str, len, SvUTF8 (sv)); 583 encode_str (enc, str, len, SvUTF8 (sv));
525 } 584 }
… …
591 } 650 }
592 651
593 if (count) 652 if (count)
594 { 653 {
595 int i, fast = 1; 654 int i, fast = 1;
596#if defined(__BORLANDC__) || defined(_MSC_VER) 655 HE *hes_stack [STACK_HES];
597 HE **hes = _alloca (count * sizeof (HE)); 656 HE **hes = hes_stack;
598#else 657
599 HE *hes [count]; // if your compiler dies here, you need to enable C99 mode 658 // allocate larger arrays on the heap
600#endif 659 if (count > STACK_HES)
660 {
661 SV *sv = sv_2mortal (NEWSV (0, count * sizeof (*hes)));
662 hes = (HE **)SvPVX (sv);
663 }
601 664
602 i = 0; 665 i = 0;
603 while ((he = hv_iternext (hv))) 666 while ((he = hv_iternext (hv)))
604 { 667 {
605 hes [i++] = he; 668 hes [i++] = he;
… …
674// encode objects, arrays and special \0=false and \1=true values. 737// encode objects, arrays and special \0=false and \1=true values.
675static void 738static void
676encode_rv (enc_t *enc, SV *sv) 739encode_rv (enc_t *enc, SV *sv)
677{ 740{
678 svtype svt; 741 svtype svt;
742 GV *method;
679 743
680 SvGETMAGIC (sv); 744 SvGETMAGIC (sv);
681 svt = SvTYPE (sv); 745 svt = SvTYPE (sv);
682 746
683 if (expect_false (SvOBJECT (sv))) 747 if (expect_false (SvOBJECT (sv)))
684 { 748 {
685 HV *stash = !JSON_SLOW || json_boolean_stash 749 HV *stash = SvSTASH (sv);
686 ? json_boolean_stash
687 : gv_stashpv ("JSON::XS::Boolean", 1);
688 750
689 if (SvSTASH (sv) == stash) 751 if (stash == bool_stash)
690 { 752 {
691 if (SvIV (sv)) 753 if (SvIV (sv))
692 encode_str (enc, "true", 4, 0); 754 encode_str (enc, "true", 4, 0);
693 else 755 else
694 encode_str (enc, "false", 5, 0); 756 encode_str (enc, "false", 5, 0);
695 } 757 }
758 else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
759 {
760 int count;
761 dSP;
762
763 ENTER; SAVETMPS;
764 SAVESTACK_POS ();
765 PUSHMARK (SP);
766 EXTEND (SP, 2);
767 // we re-bless the reference to get overload and other niceties right
768 PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
769 PUSHs (sv_json);
770
771 PUTBACK;
772 count = call_sv ((SV *)GvCV (method), G_ARRAY);
773 SPAGAIN;
774
775 // catch this surprisingly common error
776 if (SvROK (TOPs) && SvRV (TOPs) == sv)
777 croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
778
779 encode_ch (enc, '(');
780 encode_ch (enc, '"');
781 encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
782 encode_ch (enc, '"');
783 encode_ch (enc, ')');
784 encode_ch (enc, '[');
785
786 while (count)
787 {
788 encode_sv (enc, SP[1 - count--]);
789
790 if (count)
791 encode_ch (enc, ',');
792 }
793
794 encode_ch (enc, ']');
795
796 FREETMPS; LEAVE;
797 }
798 else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
799 {
800 dSP;
801
802 ENTER; SAVETMPS;
803 PUSHMARK (SP);
804 // we re-bless the reference to get overload and other niceties right
805 XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
806
807 // calling with G_SCALAR ensures that we always get a 1 return value
808 PUTBACK;
809 call_sv ((SV *)GvCV (method), G_SCALAR);
810 SPAGAIN;
811
812 // catch this surprisingly common error
813 if (SvROK (TOPs) && SvRV (TOPs) == sv)
814 croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
815
816 sv = POPs;
817 PUTBACK;
818
819 encode_sv (enc, sv);
820
821 FREETMPS; LEAVE;
822 }
823 else if (enc->json.flags & F_ALLOW_BLESSED)
824 encode_str (enc, "null", 4, 0);
696 else 825 else
697 {
698#if 0
699 if (0 && sv_derived_from (rv, "JSON::Literal"))
700 {
701 // not yet
702 }
703#endif
704 if (enc->json.flags & F_CONV_BLESSED)
705 {
706 // we re-bless the reference to get overload and other niceties right
707 GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
708
709 if (to_json)
710 {
711 dSP;
712
713 ENTER; SAVETMPS; PUSHMARK (SP);
714 XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
715
716 // calling with G_SCALAR ensures that we always get a 1 return value
717 PUTBACK;
718 call_sv ((SV *)GvCV (to_json), G_SCALAR);
719 SPAGAIN;
720
721 // catch this surprisingly common error
722 if (SvROK (TOPs) && SvRV (TOPs) == sv)
723 croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
724
725 sv = POPs;
726 PUTBACK;
727
728 encode_sv (enc, sv);
729
730 FREETMPS; LEAVE;
731 }
732 else if (enc->json.flags & F_ALLOW_BLESSED)
733 encode_str (enc, "null", 4, 0);
734 else
735 croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
736 SvPV_nolen (sv_2mortal (newRV_inc (sv))));
737 }
738 else if (enc->json.flags & F_ALLOW_BLESSED)
739 encode_str (enc, "null", 4, 0);
740 else
741 croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled", 826 croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
742 SvPV_nolen (sv_2mortal (newRV_inc (sv)))); 827 SvPV_nolen (sv_2mortal (newRV_inc (sv))));
743 }
744 } 828 }
745 else if (svt == SVt_PVHV) 829 else if (svt == SVt_PVHV)
746 encode_hv (enc, (HV *)sv); 830 encode_hv (enc, (HV *)sv);
747 else if (svt == SVt_PVAV) 831 else if (svt == SVt_PVAV)
748 encode_av (enc, (AV *)sv); 832 encode_av (enc, (AV *)sv);
749 else if (svt < SVt_PVAV) 833 else if (svt < SVt_PVAV)
750 { 834 {
751 STRLEN len = 0; 835 int bool_type = ref_bool_type (sv);
752 char *pv = svt ? SvPV (sv, len) : 0;
753 836
754 if (len == 1 && *pv == '1') 837 if (bool_type == 1)
755 encode_str (enc, "true", 4, 0); 838 encode_str (enc, "true", 4, 0);
756 else if (len == 1 && *pv == '0') 839 else if (bool_type == 0)
757 encode_str (enc, "false", 5, 0); 840 encode_str (enc, "false", 5, 0);
758 else if (enc->json.flags & F_ALLOW_UNKNOWN) 841 else if (enc->json.flags & F_ALLOW_UNKNOWN)
759 encode_str (enc, "null", 4, 0); 842 encode_str (enc, "null", 4, 0);
760 else 843 else
761 croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", 844 croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
… …
824 } 907 }
825 else 908 else
826 { 909 {
827 // large integer, use the (rather slow) snprintf way. 910 // large integer, use the (rather slow) snprintf way.
828 need (enc, IVUV_MAXCHARS); 911 need (enc, IVUV_MAXCHARS);
829 enc->cur += 912 enc->cur +=
830 SvIsUV(sv) 913 SvIsUV(sv)
831 ? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv)) 914 ? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
832 : snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv)); 915 : snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
833 } 916 }
834 } 917 }
835 else if (SvROK (sv)) 918 else if (SvROK (sv))
836 encode_rv (enc, SvRV (sv)); 919 encode_rv (enc, SvRV (sv));
837 else if (!SvOK (sv) || enc->json.flags & F_ALLOW_UNKNOWN) 920 else if (!SvOK (sv) || enc->json.flags & F_ALLOW_UNKNOWN)
838 encode_str (enc, "null", 4, 0); 921 encode_str (enc, "null", 4, 0);
839 else 922 else
840 croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this", 923 croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
841 SvPV_nolen (sv), SvFLAGS (sv)); 924 SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
842} 925}
843 926
844static SV * 927static SV *
845encode_json (SV *scalar, JSON *json) 928encode_json (SV *scalar, JSON *json)
846{ 929{
847 enc_t enc; 930 enc_t enc;
848 931
849 if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar)) 932 if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
850 croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); 933 croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
851 934
852 enc.json = *json; 935 enc.json = *json;
853 enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); 936 enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
854 enc.cur = SvPVX (enc.sv); 937 enc.cur = SvPVX (enc.sv);
… …
1061 *cur++ = *dec_cur++; 1144 *cur++ = *dec_cur++;
1062 while (--clen); 1145 while (--clen);
1063 1146
1064 utf8 = 1; 1147 utf8 = 1;
1065 } 1148 }
1149 else if (ch == '\t' && dec->json.flags & F_RELAXED)
1150 *cur++ = ch;
1066 else 1151 else
1067 { 1152 {
1068 --dec_cur; 1153 --dec_cur;
1069 1154
1070 if (!ch) 1155 if (!ch)
… …
1258 if (*dec->cur == ']') 1343 if (*dec->cur == ']')
1259 { 1344 {
1260 ++dec->cur; 1345 ++dec->cur;
1261 break; 1346 break;
1262 } 1347 }
1263 1348
1264 if (*dec->cur != ',') 1349 if (*dec->cur != ',')
1265 ERR (", or ] expected while parsing array"); 1350 ERR (", or ] expected while parsing array");
1266 1351
1267 ++dec->cur; 1352 ++dec->cur;
1268 1353
… …
1392 1477
1393 hv_iterinit (hv); 1478 hv_iterinit (hv);
1394 he = hv_iternext (hv); 1479 he = hv_iternext (hv);
1395 hv_iterinit (hv); 1480 hv_iterinit (hv);
1396 1481
1397 // the next line creates a mortal sv each time its called. 1482 // the next line creates a mortal sv each time it's called.
1398 // might want to optimise this for common cases. 1483 // might want to optimise this for common cases.
1399 cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0); 1484 cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1400 1485
1401 if (cb) 1486 if (cb)
1402 { 1487 {
1403 dSP; 1488 dSP;
1404 int count; 1489 int count;
1405 1490
1406 ENTER; SAVETMPS; PUSHMARK (SP); 1491 ENTER; SAVETMPS;
1492 SAVESTACK_POS ();
1493 PUSHMARK (SP);
1407 XPUSHs (HeVAL (he)); 1494 XPUSHs (HeVAL (he));
1408 sv_2mortal (sv); 1495 sv_2mortal (sv);
1409 1496
1410 PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN; 1497 PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1411 1498
… …
1424 if (dec->json.cb_object) 1511 if (dec->json.cb_object)
1425 { 1512 {
1426 dSP; 1513 dSP;
1427 int count; 1514 int count;
1428 1515
1429 ENTER; SAVETMPS; PUSHMARK (SP); 1516 ENTER; SAVETMPS;
1517 SAVESTACK_POS ();
1518 PUSHMARK (SP);
1430 XPUSHs (sv_2mortal (sv)); 1519 XPUSHs (sv_2mortal (sv));
1431 1520
1432 PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN; 1521 PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1433 1522
1434 if (count == 1) 1523 if (count == 1)
… …
1450 DEC_DEC_DEPTH; 1539 DEC_DEC_DEPTH;
1451 return 0; 1540 return 0;
1452} 1541}
1453 1542
1454static SV * 1543static SV *
1544decode_tag (dec_t *dec)
1545{
1546 SV *tag = 0;
1547 SV *val = 0;
1548
1549 if (!(dec->json.flags & F_ALLOW_TAGS))
1550 ERR ("malformed JSON string, neither array, object, number, string or atom");
1551
1552 ++dec->cur;
1553
1554 decode_ws (dec);
1555
1556 tag = decode_sv (dec);
1557 if (!tag)
1558 goto fail;
1559
1560 if (!SvPOK (tag))
1561 ERR ("malformed JSON string, (tag) must be a string");
1562
1563 decode_ws (dec);
1564
1565 if (*dec->cur != ')')
1566 ERR (") expected after tag");
1567
1568 ++dec->cur;
1569
1570 decode_ws (dec);
1571
1572 val = decode_sv (dec);
1573 if (!val)
1574 goto fail;
1575
1576 if (!SvROK (val) || SvTYPE (SvRV (val)) != SVt_PVAV)
1577 ERR ("malformed JSON string, tag value must be an array");
1578
1579 {
1580 AV *av = (AV *)SvRV (val);
1581 int i, len = av_len (av) + 1;
1582 HV *stash = gv_stashsv (tag, 0);
1583 SV *sv;
1584
1585 if (!stash)
1586 ERR ("cannot decode perl-object (package does not exist)");
1587
1588 GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
1589
1590 if (!method)
1591 ERR ("cannot decode perl-object (package does not have a THAW method)");
1592
1593 dSP;
1594
1595 ENTER; SAVETMPS;
1596 PUSHMARK (SP);
1597 EXTEND (SP, len + 2);
1598 // we re-bless the reference to get overload and other niceties right
1599 PUSHs (tag);
1600 PUSHs (sv_json);
1601
1602 for (i = 0; i < len; ++i)
1603 PUSHs (*av_fetch (av, i, 1));
1604
1605 PUTBACK;
1606 call_sv ((SV *)GvCV (method), G_SCALAR);
1607 SPAGAIN;
1608
1609 SvREFCNT_dec (tag);
1610 SvREFCNT_dec (val);
1611 sv = SvREFCNT_inc (POPs);
1612
1613 PUTBACK;
1614
1615 FREETMPS; LEAVE;
1616
1617 return sv;
1618 }
1619
1620fail:
1621 SvREFCNT_dec (tag);
1622 SvREFCNT_dec (val);
1623 return 0;
1624}
1625
1626static SV *
1455decode_sv (dec_t *dec) 1627decode_sv (dec_t *dec)
1456{ 1628{
1457 // the beauty of JSON: you need exactly one character lookahead 1629 // the beauty of JSON: you need exactly one character lookahead
1458 // to parse everything. 1630 // to parse everything.
1459 switch (*dec->cur) 1631 switch (*dec->cur)
1460 { 1632 {
1461 case '"': ++dec->cur; return decode_str (dec); 1633 case '"': ++dec->cur; return decode_str (dec);
1462 case '[': ++dec->cur; return decode_av (dec); 1634 case '[': ++dec->cur; return decode_av (dec);
1463 case '{': ++dec->cur; return decode_hv (dec); 1635 case '{': ++dec->cur; return decode_hv (dec);
1636 case '(': return decode_tag (dec);
1464 1637
1465 case '-': 1638 case '-':
1466 case '0': case '1': case '2': case '3': case '4': 1639 case '0': case '1': case '2': case '3': case '4':
1467 case '5': case '6': case '7': case '8': case '9': 1640 case '5': case '6': case '7': case '8': case '9':
1468 return decode_num (dec); 1641 return decode_num (dec);
… …
1470 case 't': 1643 case 't':
1471 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) 1644 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1472 { 1645 {
1473 dec->cur += 4; 1646 dec->cur += 4;
1474#if JSON_SLOW 1647#if JSON_SLOW
1475 json_true = get_bool ("JSON::XS::true"); 1648 bool_true = get_bool ("Types::Serialiser::true");
1476#endif 1649#endif
1477 return newSVsv (json_true); 1650 return newSVsv (bool_true);
1478 } 1651 }
1479 else 1652 else
1480 ERR ("'true' expected"); 1653 ERR ("'true' expected");
1481 1654
1482 break; 1655 break;
… …
1484 case 'f': 1657 case 'f':
1485 if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) 1658 if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1486 { 1659 {
1487 dec->cur += 5; 1660 dec->cur += 5;
1488#if JSON_SLOW 1661#if JSON_SLOW
1489 json_false = get_bool ("JSON::XS::false"); 1662 bool_false = get_bool ("Types::Serialiser::false");
1490#endif 1663#endif
1491 return newSVsv (json_false); 1664 return newSVsv (bool_false);
1492 } 1665 }
1493 else 1666 else
1494 ERR ("'false' expected"); 1667 ERR ("'false' expected");
1495 1668
1496 break; 1669 break;
… …
1505 ERR ("'null' expected"); 1678 ERR ("'null' expected");
1506 1679
1507 break; 1680 break;
1508 1681
1509 default: 1682 default:
1510 ERR ("malformed JSON string, neither array, object, number, string or atom"); 1683 ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1511 break; 1684 break;
1512 } 1685 }
1513 1686
1514fail: 1687fail:
1515 return 0; 1688 return 0;
… …
1520{ 1693{
1521 dec_t dec; 1694 dec_t dec;
1522 SV *sv; 1695 SV *sv;
1523 1696
1524 /* work around bugs in 5.10 where manipulating magic values 1697 /* work around bugs in 5.10 where manipulating magic values
1525 * will perl ignore the magic in subsequent accesses 1698 * makes perl ignore the magic in subsequent accesses.
1699 * also make a copy of non-PV values, to get them into a clean
1700 * state (SvPV should do that, but it's buggy, see below).
1526 */ 1701 */
1527 /*SvGETMAGIC (string);*/ 1702 /*SvGETMAGIC (string);*/
1528 if (SvMAGICAL (string)) 1703 if (SvMAGICAL (string) || !SvPOK (string))
1529 string = sv_2mortal (newSVsv (string)); 1704 string = sv_2mortal (newSVsv (string));
1530 1705
1531 SvUPGRADE (string, SVt_PV); 1706 SvUPGRADE (string, SVt_PV);
1532 1707
1533 /* work around a bug in perl 5.10, which causes SvCUR to fail an 1708 /* work around a bug in perl 5.10, which causes SvCUR to fail an
… …
1602 pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); 1777 pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1603 LEAVE; 1778 LEAVE;
1604 1779
1605 croak ("%s, at character offset %d (before \"%s\")", 1780 croak ("%s, at character offset %d (before \"%s\")",
1606 dec.err, 1781 dec.err,
1607 ptr_to_index (string, dec.cur), 1782 (int)ptr_to_index (string, dec.cur),
1608 dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); 1783 dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1609 } 1784 }
1610 1785
1611 sv = sv_2mortal (sv); 1786 sv = sv_2mortal (sv);
1612 1787
1613 if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv)) 1788 if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1614 croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); 1789 croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1615 1790
1616 return sv; 1791 return sv;
1617} 1792}
1618 1793
… …
1740 self->incr_mode = INCR_M_STR; 1915 self->incr_mode = INCR_M_STR;
1741 goto incr_m_str; 1916 goto incr_m_str;
1742 1917
1743 case '[': 1918 case '[':
1744 case '{': 1919 case '{':
1920 case '(':
1745 if (++self->incr_nest > self->max_depth) 1921 if (++self->incr_nest > self->max_depth)
1746 croak (ERR_NESTING_EXCEEDED); 1922 croak (ERR_NESTING_EXCEEDED);
1747 break; 1923 break;
1748 1924
1749 case ']': 1925 case ']':
1750 case '}': 1926 case '}':
1751 if (--self->incr_nest <= 0) 1927 if (--self->incr_nest <= 0)
1752 goto interrupt; 1928 goto interrupt;
1929 break;
1930
1931 case ')':
1932 --self->incr_nest;
1753 break; 1933 break;
1754 1934
1755 case '#': 1935 case '#':
1756 self->incr_mode = INCR_M_C1; 1936 self->incr_mode = INCR_M_C1;
1757 goto incr_m_c; 1937 goto incr_m_c;
… …
1783 i >= '0' && i <= '9' ? i - '0' 1963 i >= '0' && i <= '9' ? i - '0'
1784 : i >= 'a' && i <= 'f' ? i - 'a' + 10 1964 : i >= 'a' && i <= 'f' ? i - 'a' + 10
1785 : i >= 'A' && i <= 'F' ? i - 'A' + 10 1965 : i >= 'A' && i <= 'F' ? i - 'A' + 10
1786 : -1; 1966 : -1;
1787 1967
1788 json_stash = gv_stashpv ("JSON::XS" , 1); 1968 json_stash = gv_stashpv ("JSON::XS" , 1);
1789 json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1); 1969 bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1790
1791 json_true = get_bool ("JSON::XS::true"); 1970 bool_true = get_bool ("Types::Serialiser::true");
1792 json_false = get_bool ("JSON::XS::false"); 1971 bool_false = get_bool ("Types::Serialiser::false");
1972
1973 sv_json = newSVpv ("JSON", 0);
1974 SvREADONLY_on (sv_json);
1793 1975
1794 CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */ 1976 CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1795} 1977}
1796 1978
1797PROTOTYPES: DISABLE 1979PROTOTYPES: DISABLE
1798 1980
1799void CLONE (...) 1981void CLONE (...)
1800 CODE: 1982 CODE:
1801 json_stash = 0; 1983 json_stash = 0;
1802 json_boolean_stash = 0; 1984 bool_stash = 0;
1803 1985
1804void new (char *klass) 1986void new (char *klass)
1805 PPCODE: 1987 PPCODE:
1806{ 1988{
1807 SV *pv = NEWSV (0, sizeof (JSON)); 1989 SV *pv = NEWSV (0, sizeof (JSON));
1808 SvPOK_only (pv); 1990 SvPOK_only (pv);
1809 json_init ((JSON *)SvPVX (pv)); 1991 json_init ((JSON *)SvPVX (pv));
1810 XPUSHs (sv_2mortal (sv_bless ( 1992 XPUSHs (sv_2mortal (sv_bless (
1811 newRV_noinc (pv), 1993 newRV_noinc (pv),
1812 strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1) 1994 strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
… …
1827 shrink = F_SHRINK 2009 shrink = F_SHRINK
1828 allow_blessed = F_ALLOW_BLESSED 2010 allow_blessed = F_ALLOW_BLESSED
1829 convert_blessed = F_CONV_BLESSED 2011 convert_blessed = F_CONV_BLESSED
1830 relaxed = F_RELAXED 2012 relaxed = F_RELAXED
1831 allow_unknown = F_ALLOW_UNKNOWN 2013 allow_unknown = F_ALLOW_UNKNOWN
2014 allow_tags = F_ALLOW_TAGS
1832 PPCODE: 2015 PPCODE:
1833{ 2016{
1834 if (enable) 2017 if (enable)
1835 self->flags |= ix; 2018 self->flags |= ix;
1836 else 2019 else
… …
1852 get_shrink = F_SHRINK 2035 get_shrink = F_SHRINK
1853 get_allow_blessed = F_ALLOW_BLESSED 2036 get_allow_blessed = F_ALLOW_BLESSED
1854 get_convert_blessed = F_CONV_BLESSED 2037 get_convert_blessed = F_CONV_BLESSED
1855 get_relaxed = F_RELAXED 2038 get_relaxed = F_RELAXED
1856 get_allow_unknown = F_ALLOW_UNKNOWN 2039 get_allow_unknown = F_ALLOW_UNKNOWN
2040 get_allow_tags = F_ALLOW_TAGS
1857 PPCODE: 2041 PPCODE:
1858 XPUSHs (boolSV (self->flags & ix)); 2042 XPUSHs (boolSV (self->flags & ix));
1859 2043
1860void max_depth (JSON *self, U32 max_depth = 0x80000000UL) 2044void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1861 PPCODE: 2045 PPCODE:
… …
1889} 2073}
1890 2074
1891void filter_json_single_key_object (JSON *self, SV *key, SV *cb = &PL_sv_undef) 2075void filter_json_single_key_object (JSON *self, SV *key, SV *cb = &PL_sv_undef)
1892 PPCODE: 2076 PPCODE:
1893{ 2077{
1894 if (!self->cb_sk_object) 2078 if (!self->cb_sk_object)
1895 self->cb_sk_object = newHV (); 2079 self->cb_sk_object = newHV ();
1896 2080
1897 if (SvOK (cb)) 2081 if (SvOK (cb))
1898 hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); 2082 hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1899 else 2083 else
… …
1910 XPUSHs (ST (0)); 2094 XPUSHs (ST (0));
1911} 2095}
1912 2096
1913void encode (JSON *self, SV *scalar) 2097void encode (JSON *self, SV *scalar)
1914 PPCODE: 2098 PPCODE:
1915 XPUSHs (encode_json (scalar, self)); 2099 PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
2100 XPUSHs (scalar);
1916 2101
1917void decode (JSON *self, SV *jsonstr) 2102void decode (JSON *self, SV *jsonstr)
1918 PPCODE: 2103 PPCODE:
1919 XPUSHs (decode_json (jsonstr, self, 0)); 2104 PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
2105 XPUSHs (jsonstr);
1920 2106
1921void decode_prefix (JSON *self, SV *jsonstr) 2107void decode_prefix (JSON *self, SV *jsonstr)
1922 PPCODE: 2108 PPCODE:
1923{ 2109{
2110 SV *sv;
1924 char *offset; 2111 char *offset;
2112 PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1925 EXTEND (SP, 2); 2113 EXTEND (SP, 2);
1926 PUSHs (decode_json (jsonstr, self, &offset)); 2114 PUSHs (sv);
1927 PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset)))); 2115 PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));
1928} 2116}
1929 2117
1930void incr_parse (JSON *self, SV *jsonstr = 0) 2118void incr_parse (JSON *self, SV *jsonstr = 0)
1931 PPCODE: 2119 PPCODE:
… …
1978 } 2166 }
1979 2167
1980 if (GIMME_V != G_VOID) 2168 if (GIMME_V != G_VOID)
1981 do 2169 do
1982 { 2170 {
2171 SV *sv;
1983 char *offset; 2172 char *offset;
1984 2173
1985 if (!INCR_DONE (self)) 2174 if (!INCR_DONE (self))
1986 { 2175 {
1987 incr_parse (self); 2176 incr_parse (self);
… …
1989 if (self->incr_pos > self->max_size && self->max_size) 2178 if (self->incr_pos > self->max_size && self->max_size)
1990 croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", 2179 croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1991 (unsigned long)self->incr_pos, (unsigned long)self->max_size); 2180 (unsigned long)self->incr_pos, (unsigned long)self->max_size);
1992 2181
1993 if (!INCR_DONE (self)) 2182 if (!INCR_DONE (self))
2183 {
2184 // as an optimisation, do not accumulate white space in the incr buffer
2185 if (self->incr_mode == INCR_M_WS && self->incr_pos)
2186 {
2187 self->incr_pos = 0;
2188 SvCUR_set (self->incr_text, 0);
2189 }
2190
1994 break; 2191 break;
2192 }
1995 } 2193 }
1996 2194
1997 XPUSHs (decode_json (self->incr_text, self, &offset)); 2195 PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
2196 XPUSHs (sv);
1998 2197
1999 self->incr_pos -= offset - SvPVX (self->incr_text); 2198 self->incr_pos -= offset - SvPVX (self->incr_text);
2000 self->incr_nest = 0; 2199 self->incr_nest = 0;
2001 self->incr_mode = 0; 2200 self->incr_mode = 0;
2002 2201
… …
2046 SvREFCNT_dec (self->incr_text); 2245 SvREFCNT_dec (self->incr_text);
2047 2246
2048PROTOTYPES: ENABLE 2247PROTOTYPES: ENABLE
2049 2248
2050void encode_json (SV *scalar) 2249void encode_json (SV *scalar)
2051 ALIAS:
2052 to_json_ = 0
2053 encode_json = F_UTF8
2054 PPCODE: 2250 PPCODE:
2055{ 2251{
2056 JSON json; 2252 JSON json;
2057 json_init (&json); 2253 json_init (&json);
2058 json.flags |= ix; 2254 json.flags |= F_UTF8;
2059 XPUSHs (encode_json (scalar, &json)); 2255 PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
2256 XPUSHs (scalar);
2060} 2257}
2061 2258
2062void decode_json (SV *jsonstr) 2259void decode_json (SV *jsonstr)
2063 ALIAS:
2064 from_json_ = 0
2065 decode_json = F_UTF8
2066 PPCODE: 2260 PPCODE:
2067{ 2261{
2068 JSON json; 2262 JSON json;
2069 json_init (&json); 2263 json_init (&json);
2070 json.flags |= ix; 2264 json.flags |= F_UTF8;
2071 XPUSHs (decode_json (jsonstr, &json, 0)); 2265 PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
2266 XPUSHs (jsonstr);
2072} 2267}
2073 2268

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