ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/JSON-XS/XS.xs
(Generate patch)

Comparing JSON-XS/XS.xs (file contents):
Revision 1.105 by root, Tue Jan 19 01:07:27 2010 UTC vs.
Revision 1.124 by root, Mon Nov 24 18:42:51 2014 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
43#define INDENT_STEP 3 // spaces per indentation level 55#define INDENT_STEP 3 // spaces per indentation level
44 56
45#define SHORT_STRING_LEN 16384 // special-case strings of up to this size 57#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
58
59#define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8)
46 60
47#define SB do { 61#define SB do {
48#define SE } while (0) 62#define SE } while (0)
49 63
50#if __GNUC__ >= 3 64#if __GNUC__ >= 3
… …
70#else 84#else
71# define JSON_SLOW 0 85# define JSON_SLOW 0
72# define JSON_STASH json_stash 86# define JSON_STASH json_stash
73#endif 87#endif
74 88
89// the amount of HEs to allocate on the stack, when sorting keys
90#define STACK_HES 64
91
75static HV *json_stash, *json_boolean_stash; // JSON::XS:: 92static HV *json_stash, *types_boolean_stash; // JSON::XS::
76static SV *json_true, *json_false; 93static SV *types_true, *types_false, *sv_json;
77 94
78enum { 95enum {
79 INCR_M_WS = 0, // initial whitespace skipping, must be 0 96 INCR_M_WS = 0, // initial whitespace skipping, must be 0
80 INCR_M_STR, // inside string 97 INCR_M_STR, // inside string
81 INCR_M_BS, // inside backslash 98 INCR_M_BS, // inside backslash
… …
192///////////////////////////////////////////////////////////////////////////// 209/////////////////////////////////////////////////////////////////////////////
193// fp hell 210// fp hell
194 211
195// scan a group of digits, and a trailing exponent 212// scan a group of digits, and a trailing exponent
196static void 213static void
197json_atof_scan1 (const char *s, NV *accum, int *expo, int postdp) 214json_atof_scan1 (const char *s, NV *accum, int *expo, int postdp, int maxdepth)
198{ 215{
199 UV uaccum = 0; 216 UV uaccum = 0;
200 int eaccum = 0; 217 int eaccum = 0;
218
219 // if we recurse too deep, skip all remaining digits
220 // to avoid a stack overflow attack
221 if (expect_false (--maxdepth <= 0))
222 while (((U8)*s - '0') < 10)
223 ++s;
201 224
202 for (;;) 225 for (;;)
203 { 226 {
204 U8 dig = (U8)*s - '0'; 227 U8 dig = (U8)*s - '0';
205 228
206 if (expect_false (dig >= 10)) 229 if (expect_false (dig >= 10))
207 { 230 {
208 if (dig == (U8)((U8)'.' - (U8)'0')) 231 if (dig == (U8)((U8)'.' - (U8)'0'))
209 { 232 {
210 ++s; 233 ++s;
211 json_atof_scan1 (s, accum, expo, 1); 234 json_atof_scan1 (s, accum, expo, 1, maxdepth);
212 } 235 }
213 else if ((dig | ' ') == 'e' - '0') 236 else if ((dig | ' ') == 'e' - '0')
214 { 237 {
215 int exp2 = 0; 238 int exp2 = 0;
216 int neg = 0; 239 int neg = 0;
… …
242 // if we have too many digits, then recurse for more 265 // if we have too many digits, then recurse for more
243 // we actually do this for rather few digits 266 // we actually do this for rather few digits
244 if (uaccum >= (UV_MAX - 9) / 10) 267 if (uaccum >= (UV_MAX - 9) / 10)
245 { 268 {
246 if (postdp) *expo -= eaccum; 269 if (postdp) *expo -= eaccum;
247 json_atof_scan1 (s, accum, expo, postdp); 270 json_atof_scan1 (s, accum, expo, postdp, maxdepth);
248 if (postdp) *expo += eaccum; 271 if (postdp) *expo += eaccum;
249 272
250 break; 273 break;
251 } 274 }
252 } 275 }
253 276
254 // this relies greatly on the quality of the pow () 277 // this relies greatly on the quality of the pow ()
255 // implementation of the platform, but a good 278 // implementation of the platform, but a good
256 // implementation is hard to beat. 279 // implementation is hard to beat.
280 // (IEEE 754 conformant ones are required to be exact)
257 if (postdp) *expo -= eaccum; 281 if (postdp) *expo -= eaccum;
258 *accum += uaccum * Perl_pow (10., *expo); 282 *accum += uaccum * Perl_pow (10., *expo);
259 *expo += eaccum; 283 *expo += eaccum;
260} 284}
261 285
… …
270 { 294 {
271 ++s; 295 ++s;
272 neg = 1; 296 neg = 1;
273 } 297 }
274 298
299 // a recursion depth of ten gives us >>500 bits
275 json_atof_scan1 (s, &accum, &expo, 0); 300 json_atof_scan1 (s, &accum, &expo, 0, 10);
276 301
277 return neg ? -accum : accum; 302 return neg ? -accum : accum;
278} 303}
279///////////////////////////////////////////////////////////////////////////// 304/////////////////////////////////////////////////////////////////////////////
280// encoder 305// encoder
… …
470 495
471 if (enc->indent >= enc->json.max_depth) 496 if (enc->indent >= enc->json.max_depth)
472 croak (ERR_NESTING_EXCEEDED); 497 croak (ERR_NESTING_EXCEEDED);
473 498
474 encode_ch (enc, '['); 499 encode_ch (enc, '[');
475 500
476 if (len >= 0) 501 if (len >= 0)
477 { 502 {
478 encode_nl (enc); ++enc->indent; 503 encode_nl (enc); ++enc->indent;
479 504
480 for (i = 0; i <= len; ++i) 505 for (i = 0; i <= len; ++i)
… …
492 encode_comma (enc); 517 encode_comma (enc);
493 } 518 }
494 519
495 encode_nl (enc); --enc->indent; encode_indent (enc); 520 encode_nl (enc); --enc->indent; encode_indent (enc);
496 } 521 }
497 522
498 encode_ch (enc, ']'); 523 encode_ch (enc, ']');
499} 524}
500 525
501static void 526static void
502encode_hk (enc_t *enc, HE *he) 527encode_hk (enc_t *enc, HE *he)
… …
506 if (HeKLEN (he) == HEf_SVKEY) 531 if (HeKLEN (he) == HEf_SVKEY)
507 { 532 {
508 SV *sv = HeSVKEY (he); 533 SV *sv = HeSVKEY (he);
509 STRLEN len; 534 STRLEN len;
510 char *str; 535 char *str;
511 536
512 SvGETMAGIC (sv); 537 SvGETMAGIC (sv);
513 str = SvPV (sv, len); 538 str = SvPV (sv, len);
514 539
515 encode_str (enc, str, len, SvUTF8 (sv)); 540 encode_str (enc, str, len, SvUTF8 (sv));
516 } 541 }
… …
582 } 607 }
583 608
584 if (count) 609 if (count)
585 { 610 {
586 int i, fast = 1; 611 int i, fast = 1;
587#if defined(__BORLANDC__) || defined(_MSC_VER) 612 HE *hes_stack [STACK_HES];
588 HE **hes = _alloca (count * sizeof (HE)); 613 HE **hes = hes_stack;
589#else 614
590 HE *hes [count]; // if your compiler dies here, you need to enable C99 mode 615 // allocate larger arrays on the heap
591#endif 616 if (count > STACK_HES)
617 {
618 SV *sv = sv_2mortal (NEWSV (0, count * sizeof (*hes)));
619 hes = (HE **)SvPVX (sv);
620 }
592 621
593 i = 0; 622 i = 0;
594 while ((he = hv_iternext (hv))) 623 while ((he = hv_iternext (hv)))
595 { 624 {
596 hes [i++] = he; 625 hes [i++] = he;
… …
665// encode objects, arrays and special \0=false and \1=true values. 694// encode objects, arrays and special \0=false and \1=true values.
666static void 695static void
667encode_rv (enc_t *enc, SV *sv) 696encode_rv (enc_t *enc, SV *sv)
668{ 697{
669 svtype svt; 698 svtype svt;
699 GV *method;
670 700
671 SvGETMAGIC (sv); 701 SvGETMAGIC (sv);
672 svt = SvTYPE (sv); 702 svt = SvTYPE (sv);
673 703
674 if (expect_false (SvOBJECT (sv))) 704 if (expect_false (SvOBJECT (sv)))
675 { 705 {
676 HV *stash = !JSON_SLOW || json_boolean_stash 706 HV *boolean_stash = !JSON_SLOW || types_boolean_stash
677 ? json_boolean_stash 707 ? types_boolean_stash
678 : gv_stashpv ("JSON::XS::Boolean", 1); 708 : gv_stashpv ("Types::Serialiser::Boolean", 1);
709 HV *stash = SvSTASH (sv);
679 710
680 if (SvSTASH (sv) == stash) 711 if (stash == boolean_stash)
681 { 712 {
682 if (SvIV (sv)) 713 if (SvIV (sv))
683 encode_str (enc, "true", 4, 0); 714 encode_str (enc, "true", 4, 0);
684 else 715 else
685 encode_str (enc, "false", 5, 0); 716 encode_str (enc, "false", 5, 0);
686 } 717 }
718 else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
719 {
720 int count;
721 dSP;
722
723 ENTER; SAVETMPS; PUSHMARK (SP);
724 EXTEND (SP, 2);
725 // we re-bless the reference to get overload and other niceties right
726 PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
727 PUSHs (sv_json);
728
729 PUTBACK;
730 count = call_sv ((SV *)GvCV (method), G_ARRAY);
731 SPAGAIN;
732
733 // catch this surprisingly common error
734 if (SvROK (TOPs) && SvRV (TOPs) == sv)
735 croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
736
737 encode_ch (enc, '(');
738 encode_ch (enc, '"');
739 encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
740 encode_ch (enc, '"');
741 encode_ch (enc, ')');
742 encode_ch (enc, '[');
743
744 while (count)
745 {
746 encode_sv (enc, SP[1 - count--]);
747
748 if (count)
749 encode_ch (enc, ',');
750 }
751
752 encode_ch (enc, ']');
753
754 PUTBACK;
755
756 FREETMPS; LEAVE;
757 }
758 else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
759 {
760 dSP;
761
762 ENTER; SAVETMPS; PUSHMARK (SP);
763 // we re-bless the reference to get overload and other niceties right
764 XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
765
766 // calling with G_SCALAR ensures that we always get a 1 return value
767 PUTBACK;
768 call_sv ((SV *)GvCV (method), G_SCALAR);
769 SPAGAIN;
770
771 // catch this surprisingly common error
772 if (SvROK (TOPs) && SvRV (TOPs) == sv)
773 croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
774
775 sv = POPs;
776 PUTBACK;
777
778 encode_sv (enc, sv);
779
780 FREETMPS; LEAVE;
781 }
782 else if (enc->json.flags & F_ALLOW_BLESSED)
783 encode_str (enc, "null", 4, 0);
687 else 784 else
688 {
689#if 0
690 if (0 && sv_derived_from (rv, "JSON::Literal"))
691 {
692 // not yet
693 }
694#endif
695 if (enc->json.flags & F_CONV_BLESSED)
696 {
697 // we re-bless the reference to get overload and other niceties right
698 GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
699
700 if (to_json)
701 {
702 dSP;
703
704 ENTER; SAVETMPS; PUSHMARK (SP);
705 XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
706
707 // calling with G_SCALAR ensures that we always get a 1 return value
708 PUTBACK;
709 call_sv ((SV *)GvCV (to_json), G_SCALAR);
710 SPAGAIN;
711
712 // catch this surprisingly common error
713 if (SvROK (TOPs) && SvRV (TOPs) == sv)
714 croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
715
716 sv = POPs;
717 PUTBACK;
718
719 encode_sv (enc, sv);
720
721 FREETMPS; LEAVE;
722 }
723 else if (enc->json.flags & F_ALLOW_BLESSED)
724 encode_str (enc, "null", 4, 0);
725 else
726 croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
727 SvPV_nolen (sv_2mortal (newRV_inc (sv))));
728 }
729 else if (enc->json.flags & F_ALLOW_BLESSED)
730 encode_str (enc, "null", 4, 0);
731 else
732 croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled", 785 croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
733 SvPV_nolen (sv_2mortal (newRV_inc (sv)))); 786 SvPV_nolen (sv_2mortal (newRV_inc (sv))));
734 }
735 } 787 }
736 else if (svt == SVt_PVHV) 788 else if (svt == SVt_PVHV)
737 encode_hv (enc, (HV *)sv); 789 encode_hv (enc, (HV *)sv);
738 else if (svt == SVt_PVAV) 790 else if (svt == SVt_PVAV)
739 encode_av (enc, (AV *)sv); 791 encode_av (enc, (AV *)sv);
… …
815 } 867 }
816 else 868 else
817 { 869 {
818 // large integer, use the (rather slow) snprintf way. 870 // large integer, use the (rather slow) snprintf way.
819 need (enc, IVUV_MAXCHARS); 871 need (enc, IVUV_MAXCHARS);
820 enc->cur += 872 enc->cur +=
821 SvIsUV(sv) 873 SvIsUV(sv)
822 ? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv)) 874 ? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
823 : snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv)); 875 : snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
824 } 876 }
825 } 877 }
826 else if (SvROK (sv)) 878 else if (SvROK (sv))
827 encode_rv (enc, SvRV (sv)); 879 encode_rv (enc, SvRV (sv));
828 else if (!SvOK (sv) || enc->json.flags & F_ALLOW_UNKNOWN) 880 else if (!SvOK (sv) || enc->json.flags & F_ALLOW_UNKNOWN)
829 encode_str (enc, "null", 4, 0); 881 encode_str (enc, "null", 4, 0);
830 else 882 else
831 croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this", 883 croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
832 SvPV_nolen (sv), SvFLAGS (sv)); 884 SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
833} 885}
834 886
835static SV * 887static SV *
836encode_json (SV *scalar, JSON *json) 888encode_json (SV *scalar, JSON *json)
837{ 889{
… …
1052 *cur++ = *dec_cur++; 1104 *cur++ = *dec_cur++;
1053 while (--clen); 1105 while (--clen);
1054 1106
1055 utf8 = 1; 1107 utf8 = 1;
1056 } 1108 }
1109 else if (ch == '\t' && dec->json.flags & F_RELAXED)
1110 *cur++ = ch;
1057 else 1111 else
1058 { 1112 {
1059 --dec_cur; 1113 --dec_cur;
1060 1114
1061 if (!ch) 1115 if (!ch)
… …
1249 if (*dec->cur == ']') 1303 if (*dec->cur == ']')
1250 { 1304 {
1251 ++dec->cur; 1305 ++dec->cur;
1252 break; 1306 break;
1253 } 1307 }
1254 1308
1255 if (*dec->cur != ',') 1309 if (*dec->cur != ',')
1256 ERR (", or ] expected while parsing array"); 1310 ERR (", or ] expected while parsing array");
1257 1311
1258 ++dec->cur; 1312 ++dec->cur;
1259 1313
… …
1394 dSP; 1448 dSP;
1395 int count; 1449 int count;
1396 1450
1397 ENTER; SAVETMPS; PUSHMARK (SP); 1451 ENTER; SAVETMPS; PUSHMARK (SP);
1398 XPUSHs (HeVAL (he)); 1452 XPUSHs (HeVAL (he));
1453 sv_2mortal (sv);
1399 1454
1400 PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN; 1455 PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1401 1456
1402 if (count == 1) 1457 if (count == 1)
1403 { 1458 {
1404 sv = newSVsv (POPs); 1459 sv = newSVsv (POPs);
1405 FREETMPS; LEAVE; 1460 FREETMPS; LEAVE;
1406 return sv; 1461 return sv;
1407 } 1462 }
1408 1463
1464 SvREFCNT_inc (sv);
1409 FREETMPS; LEAVE; 1465 FREETMPS; LEAVE;
1410 } 1466 }
1411 } 1467 }
1412 1468
1413 if (dec->json.cb_object) 1469 if (dec->json.cb_object)
… …
1439 DEC_DEC_DEPTH; 1495 DEC_DEC_DEPTH;
1440 return 0; 1496 return 0;
1441} 1497}
1442 1498
1443static SV * 1499static SV *
1500decode_tag (dec_t *dec)
1501{
1502 SV *tag = 0;
1503 SV *val = 0;
1504
1505 if (!(dec->json.flags & F_ALLOW_TAGS))
1506 ERR ("malformed JSON string, neither array, object, number, string or atom");
1507
1508 ++dec->cur;
1509
1510 decode_ws (dec);
1511
1512 tag = decode_sv (dec);
1513 if (!tag)
1514 goto fail;
1515
1516 if (!SvPOK (tag))
1517 ERR ("malformed JSON string, (tag) must be a string");
1518
1519 decode_ws (dec);
1520
1521 if (*dec->cur != ')')
1522 ERR (") expected after tag");
1523
1524 ++dec->cur;
1525
1526 decode_ws (dec);
1527
1528 val = decode_sv (dec);
1529 if (!val)
1530 goto fail;
1531
1532 if (!SvROK (val) || SvTYPE (SvRV (val)) != SVt_PVAV)
1533 ERR ("malformed JSON string, tag value must be an array");
1534
1535 {
1536 AV *av = (AV *)SvRV (val);
1537 int i, len = av_len (av) + 1;
1538 HV *stash = gv_stashsv (tag, 0);
1539 SV *sv;
1540
1541 if (!stash)
1542 ERR ("cannot decode perl-object (package does not exist)");
1543
1544 GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
1545
1546 if (!method)
1547 ERR ("cannot decode perl-object (package does not have a THAW method)");
1548
1549 dSP;
1550
1551 ENTER; SAVETMPS; PUSHMARK (SP);
1552 EXTEND (SP, len + 2);
1553 // we re-bless the reference to get overload and other niceties right
1554 PUSHs (tag);
1555 PUSHs (sv_json);
1556
1557 for (i = 0; i < len; ++i)
1558 PUSHs (*av_fetch (av, i, 1));
1559
1560 PUTBACK;
1561 call_sv ((SV *)GvCV (method), G_SCALAR);
1562 SPAGAIN;
1563
1564 SvREFCNT_dec (tag);
1565 SvREFCNT_dec (val);
1566 sv = SvREFCNT_inc (POPs);
1567
1568 PUTBACK;
1569
1570 FREETMPS; LEAVE;
1571
1572 return sv;
1573 }
1574
1575fail:
1576 SvREFCNT_dec (tag);
1577 SvREFCNT_dec (val);
1578 return 0;
1579}
1580
1581static SV *
1444decode_sv (dec_t *dec) 1582decode_sv (dec_t *dec)
1445{ 1583{
1446 // the beauty of JSON: you need exactly one character lookahead 1584 // the beauty of JSON: you need exactly one character lookahead
1447 // to parse everything. 1585 // to parse everything.
1448 switch (*dec->cur) 1586 switch (*dec->cur)
1449 { 1587 {
1450 case '"': ++dec->cur; return decode_str (dec); 1588 case '"': ++dec->cur; return decode_str (dec);
1451 case '[': ++dec->cur; return decode_av (dec); 1589 case '[': ++dec->cur; return decode_av (dec);
1452 case '{': ++dec->cur; return decode_hv (dec); 1590 case '{': ++dec->cur; return decode_hv (dec);
1591 case '(': return decode_tag (dec);
1453 1592
1454 case '-': 1593 case '-':
1455 case '0': case '1': case '2': case '3': case '4': 1594 case '0': case '1': case '2': case '3': case '4':
1456 case '5': case '6': case '7': case '8': case '9': 1595 case '5': case '6': case '7': case '8': case '9':
1457 return decode_num (dec); 1596 return decode_num (dec);
… …
1459 case 't': 1598 case 't':
1460 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) 1599 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1461 { 1600 {
1462 dec->cur += 4; 1601 dec->cur += 4;
1463#if JSON_SLOW 1602#if JSON_SLOW
1464 json_true = get_bool ("JSON::XS::true"); 1603 types_true = get_bool ("Types::Serialiser::true");
1465#endif 1604#endif
1466 return newSVsv (json_true); 1605 return newSVsv (types_true);
1467 } 1606 }
1468 else 1607 else
1469 ERR ("'true' expected"); 1608 ERR ("'true' expected");
1470 1609
1471 break; 1610 break;
… …
1473 case 'f': 1612 case 'f':
1474 if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) 1613 if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1475 { 1614 {
1476 dec->cur += 5; 1615 dec->cur += 5;
1477#if JSON_SLOW 1616#if JSON_SLOW
1478 json_false = get_bool ("JSON::XS::false"); 1617 types_false = get_bool ("Types::Serialiser::false");
1479#endif 1618#endif
1480 return newSVsv (json_false); 1619 return newSVsv (types_false);
1481 } 1620 }
1482 else 1621 else
1483 ERR ("'false' expected"); 1622 ERR ("'false' expected");
1484 1623
1485 break; 1624 break;
… …
1494 ERR ("'null' expected"); 1633 ERR ("'null' expected");
1495 1634
1496 break; 1635 break;
1497 1636
1498 default: 1637 default:
1499 ERR ("malformed JSON string, neither array, object, number, string or atom"); 1638 ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1500 break; 1639 break;
1501 } 1640 }
1502 1641
1503fail: 1642fail:
1504 return 0; 1643 return 0;
… …
1509{ 1648{
1510 dec_t dec; 1649 dec_t dec;
1511 SV *sv; 1650 SV *sv;
1512 1651
1513 /* work around bugs in 5.10 where manipulating magic values 1652 /* work around bugs in 5.10 where manipulating magic values
1514 * will perl ignore the magic in subsequent accesses 1653 * makes perl ignore the magic in subsequent accesses.
1654 * also make a copy of non-PV values, to get them into a clean
1655 * state (SvPV should do that, but it's buggy, see below).
1515 */ 1656 */
1516 /*SvGETMAGIC (string);*/ 1657 /*SvGETMAGIC (string);*/
1517 if (SvMAGICAL (string)) 1658 if (SvMAGICAL (string) || !SvPOK (string))
1518 string = sv_2mortal (newSVsv (string)); 1659 string = sv_2mortal (newSVsv (string));
1519 1660
1520 SvUPGRADE (string, SVt_PV); 1661 SvUPGRADE (string, SVt_PV);
1521 1662
1522 /* work around a bug in perl 5.10, which causes SvCUR to fail an 1663 /* work around a bug in perl 5.10, which causes SvCUR to fail an
… …
1539 if (offset > json->max_size && json->max_size) 1680 if (offset > json->max_size && json->max_size)
1540 croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", 1681 croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1541 (unsigned long)SvCUR (string), (unsigned long)json->max_size); 1682 (unsigned long)SvCUR (string), (unsigned long)json->max_size);
1542 } 1683 }
1543 1684
1544 if (json->flags & F_UTF8) 1685 if (DECODE_WANTS_OCTETS (json))
1545 sv_utf8_downgrade (string, 0); 1686 sv_utf8_downgrade (string, 0);
1546 else 1687 else
1547 sv_utf8_upgrade (string); 1688 sv_utf8_upgrade (string);
1548 1689
1549 SvGROW (string, SvCUR (string) + 1); // should basically be a NOP 1690 SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
… …
1591 pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); 1732 pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1592 LEAVE; 1733 LEAVE;
1593 1734
1594 croak ("%s, at character offset %d (before \"%s\")", 1735 croak ("%s, at character offset %d (before \"%s\")",
1595 dec.err, 1736 dec.err,
1596 ptr_to_index (string, dec.cur), 1737 (int)ptr_to_index (string, dec.cur),
1597 dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); 1738 dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1598 } 1739 }
1599 1740
1600 sv = sv_2mortal (sv); 1741 sv = sv_2mortal (sv);
1601 1742
… …
1729 self->incr_mode = INCR_M_STR; 1870 self->incr_mode = INCR_M_STR;
1730 goto incr_m_str; 1871 goto incr_m_str;
1731 1872
1732 case '[': 1873 case '[':
1733 case '{': 1874 case '{':
1875 case '(':
1734 if (++self->incr_nest > self->max_depth) 1876 if (++self->incr_nest > self->max_depth)
1735 croak (ERR_NESTING_EXCEEDED); 1877 croak (ERR_NESTING_EXCEEDED);
1736 break; 1878 break;
1737 1879
1738 case ']': 1880 case ']':
1739 case '}': 1881 case '}':
1740 if (--self->incr_nest <= 0) 1882 if (--self->incr_nest <= 0)
1741 goto interrupt; 1883 goto interrupt;
1884 break;
1885
1886 case ')':
1887 --self->incr_nest;
1742 break; 1888 break;
1743 1889
1744 case '#': 1890 case '#':
1745 self->incr_mode = INCR_M_C1; 1891 self->incr_mode = INCR_M_C1;
1746 goto incr_m_c; 1892 goto incr_m_c;
… …
1772 i >= '0' && i <= '9' ? i - '0' 1918 i >= '0' && i <= '9' ? i - '0'
1773 : i >= 'a' && i <= 'f' ? i - 'a' + 10 1919 : i >= 'a' && i <= 'f' ? i - 'a' + 10
1774 : i >= 'A' && i <= 'F' ? i - 'A' + 10 1920 : i >= 'A' && i <= 'F' ? i - 'A' + 10
1775 : -1; 1921 : -1;
1776 1922
1777 json_stash = gv_stashpv ("JSON::XS" , 1); 1923 json_stash = gv_stashpv ("JSON::XS" , 1);
1778 json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1); 1924 types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1779 1925
1780 json_true = get_bool ("JSON::XS::true"); 1926 types_true = get_bool ("Types::Serialiser::true");
1781 json_false = get_bool ("JSON::XS::false"); 1927 types_false = get_bool ("Types::Serialiser::false");
1928
1929 sv_json = newSVpv ("JSON", 0);
1930 SvREADONLY_on (sv_json);
1782 1931
1783 CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */ 1932 CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1784} 1933}
1785 1934
1786PROTOTYPES: DISABLE 1935PROTOTYPES: DISABLE
1787 1936
1788void CLONE (...) 1937void CLONE (...)
1789 CODE: 1938 CODE:
1790 json_stash = 0; 1939 json_stash = 0;
1791 json_boolean_stash = 0; 1940 types_boolean_stash = 0;
1792 1941
1793void new (char *klass) 1942void new (char *klass)
1794 PPCODE: 1943 PPCODE:
1795{ 1944{
1796 SV *pv = NEWSV (0, sizeof (JSON)); 1945 SV *pv = NEWSV (0, sizeof (JSON));
1797 SvPOK_only (pv); 1946 SvPOK_only (pv);
1798 json_init ((JSON *)SvPVX (pv)); 1947 json_init ((JSON *)SvPVX (pv));
1799 XPUSHs (sv_2mortal (sv_bless ( 1948 XPUSHs (sv_2mortal (sv_bless (
1800 newRV_noinc (pv), 1949 newRV_noinc (pv),
1801 strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1) 1950 strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
… …
1816 shrink = F_SHRINK 1965 shrink = F_SHRINK
1817 allow_blessed = F_ALLOW_BLESSED 1966 allow_blessed = F_ALLOW_BLESSED
1818 convert_blessed = F_CONV_BLESSED 1967 convert_blessed = F_CONV_BLESSED
1819 relaxed = F_RELAXED 1968 relaxed = F_RELAXED
1820 allow_unknown = F_ALLOW_UNKNOWN 1969 allow_unknown = F_ALLOW_UNKNOWN
1970 allow_tags = F_ALLOW_TAGS
1821 PPCODE: 1971 PPCODE:
1822{ 1972{
1823 if (enable) 1973 if (enable)
1824 self->flags |= ix; 1974 self->flags |= ix;
1825 else 1975 else
… …
1841 get_shrink = F_SHRINK 1991 get_shrink = F_SHRINK
1842 get_allow_blessed = F_ALLOW_BLESSED 1992 get_allow_blessed = F_ALLOW_BLESSED
1843 get_convert_blessed = F_CONV_BLESSED 1993 get_convert_blessed = F_CONV_BLESSED
1844 get_relaxed = F_RELAXED 1994 get_relaxed = F_RELAXED
1845 get_allow_unknown = F_ALLOW_UNKNOWN 1995 get_allow_unknown = F_ALLOW_UNKNOWN
1996 get_allow_tags = F_ALLOW_TAGS
1846 PPCODE: 1997 PPCODE:
1847 XPUSHs (boolSV (self->flags & ix)); 1998 XPUSHs (boolSV (self->flags & ix));
1848 1999
1849void max_depth (JSON *self, U32 max_depth = 0x80000000UL) 2000void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1850 PPCODE: 2001 PPCODE:
… …
1878} 2029}
1879 2030
1880void filter_json_single_key_object (JSON *self, SV *key, SV *cb = &PL_sv_undef) 2031void filter_json_single_key_object (JSON *self, SV *key, SV *cb = &PL_sv_undef)
1881 PPCODE: 2032 PPCODE:
1882{ 2033{
1883 if (!self->cb_sk_object) 2034 if (!self->cb_sk_object)
1884 self->cb_sk_object = newHV (); 2035 self->cb_sk_object = newHV ();
1885 2036
1886 if (SvOK (cb)) 2037 if (SvOK (cb))
1887 hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); 2038 hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1888 else 2039 else
… …
1899 XPUSHs (ST (0)); 2050 XPUSHs (ST (0));
1900} 2051}
1901 2052
1902void encode (JSON *self, SV *scalar) 2053void encode (JSON *self, SV *scalar)
1903 PPCODE: 2054 PPCODE:
1904 XPUSHs (encode_json (scalar, self)); 2055 PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
2056 XPUSHs (scalar);
1905 2057
1906void decode (JSON *self, SV *jsonstr) 2058void decode (JSON *self, SV *jsonstr)
1907 PPCODE: 2059 PPCODE:
1908 XPUSHs (decode_json (jsonstr, self, 0)); 2060 PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
2061 XPUSHs (jsonstr);
1909 2062
1910void decode_prefix (JSON *self, SV *jsonstr) 2063void decode_prefix (JSON *self, SV *jsonstr)
1911 PPCODE: 2064 PPCODE:
1912{ 2065{
2066 SV *sv;
1913 char *offset; 2067 char *offset;
2068 PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1914 EXTEND (SP, 2); 2069 EXTEND (SP, 2);
1915 PUSHs (decode_json (jsonstr, self, &offset)); 2070 PUSHs (sv);
1916 PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset)))); 2071 PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));
1917} 2072}
1918 2073
1919void incr_parse (JSON *self, SV *jsonstr = 0) 2074void incr_parse (JSON *self, SV *jsonstr = 0)
1920 PPCODE: 2075 PPCODE:
1921{ 2076{
1922 if (!self->incr_text) 2077 if (!self->incr_text)
1923 self->incr_text = newSVpvn ("", 0); 2078 self->incr_text = newSVpvn ("", 0);
2079
2080 /* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
2081 if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
2082 if (DECODE_WANTS_OCTETS (self))
2083 {
2084 if (self->incr_pos)
2085 self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
2086 (U8 *)SvPVX (self->incr_text) + self->incr_pos);
2087
2088 sv_utf8_downgrade (self->incr_text, 0);
2089 }
2090 else
2091 {
2092 sv_utf8_upgrade (self->incr_text);
2093
2094 if (self->incr_pos)
2095 self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
2096 - (U8 *)SvPVX (self->incr_text);
2097 }
1924 2098
1925 // append data, if any 2099 // append data, if any
1926 if (jsonstr) 2100 if (jsonstr)
1927 { 2101 {
2102 /* make sure both strings have same encoding */
2103 if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
1928 if (SvUTF8 (jsonstr)) 2104 if (SvUTF8 (jsonstr))
2105 sv_utf8_downgrade (jsonstr, 0);
1929 { 2106 else
1930 if (!SvUTF8 (self->incr_text))
1931 {
1932 /* utf-8-ness differs, need to upgrade */
1933 sv_utf8_upgrade (self->incr_text);
1934
1935 if (self->incr_pos)
1936 self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
1937 - (U8 *)SvPVX (self->incr_text);
1938 }
1939 }
1940 else if (SvUTF8 (self->incr_text))
1941 sv_utf8_upgrade (jsonstr); 2107 sv_utf8_upgrade (jsonstr);
1942 2108
2109 /* and then just blindly append */
1943 { 2110 {
1944 STRLEN len; 2111 STRLEN len;
1945 const char *str = SvPV (jsonstr, len); 2112 const char *str = SvPV (jsonstr, len);
1946 STRLEN cur = SvCUR (self->incr_text); 2113 STRLEN cur = SvCUR (self->incr_text);
1947 2114
… …
1955 } 2122 }
1956 2123
1957 if (GIMME_V != G_VOID) 2124 if (GIMME_V != G_VOID)
1958 do 2125 do
1959 { 2126 {
2127 SV *sv;
1960 char *offset; 2128 char *offset;
1961 2129
1962 if (!INCR_DONE (self)) 2130 if (!INCR_DONE (self))
1963 { 2131 {
1964 incr_parse (self); 2132 incr_parse (self);
… …
1966 if (self->incr_pos > self->max_size && self->max_size) 2134 if (self->incr_pos > self->max_size && self->max_size)
1967 croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", 2135 croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1968 (unsigned long)self->incr_pos, (unsigned long)self->max_size); 2136 (unsigned long)self->incr_pos, (unsigned long)self->max_size);
1969 2137
1970 if (!INCR_DONE (self)) 2138 if (!INCR_DONE (self))
2139 {
2140 // as an optimisation, do not accumulate white space in the incr buffer
2141 if (self->incr_mode == INCR_M_WS && self->incr_pos)
2142 {
2143 self->incr_pos = 0;
2144 SvCUR_set (self->incr_text, 0);
2145 }
2146
1971 break; 2147 break;
2148 }
1972 } 2149 }
1973 2150
1974 XPUSHs (decode_json (self->incr_text, self, &offset)); 2151 PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
2152 XPUSHs (sv);
1975 2153
1976 self->incr_pos -= offset - SvPVX (self->incr_text); 2154 self->incr_pos -= offset - SvPVX (self->incr_text);
1977 self->incr_nest = 0; 2155 self->incr_nest = 0;
1978 self->incr_mode = 0; 2156 self->incr_mode = 0;
1979 2157
… …
2023 SvREFCNT_dec (self->incr_text); 2201 SvREFCNT_dec (self->incr_text);
2024 2202
2025PROTOTYPES: ENABLE 2203PROTOTYPES: ENABLE
2026 2204
2027void encode_json (SV *scalar) 2205void encode_json (SV *scalar)
2028 ALIAS:
2029 to_json_ = 0
2030 encode_json = F_UTF8
2031 PPCODE: 2206 PPCODE:
2032{ 2207{
2033 JSON json; 2208 JSON json;
2034 json_init (&json); 2209 json_init (&json);
2035 json.flags |= ix; 2210 json.flags |= F_UTF8;
2036 XPUSHs (encode_json (scalar, &json)); 2211 PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
2212 XPUSHs (scalar);
2037} 2213}
2038 2214
2039void decode_json (SV *jsonstr) 2215void decode_json (SV *jsonstr)
2040 ALIAS:
2041 from_json_ = 0
2042 decode_json = F_UTF8
2043 PPCODE: 2216 PPCODE:
2044{ 2217{
2045 JSON json; 2218 JSON json;
2046 json_init (&json); 2219 json_init (&json);
2047 json.flags |= ix; 2220 json.flags |= F_UTF8;
2048 XPUSHs (decode_json (jsonstr, &json, 0)); 2221 PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
2222 XPUSHs (jsonstr);
2049} 2223}
2050 2224

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines