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Comparing JSON-XS/XS.xs (file contents):
Revision 1.118 by root, Fri Oct 25 20:27:57 2013 UTC vs.
Revision 1.136 by root, Thu Nov 15 22:35:35 2018 UTC

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 <limits.h> 9#include <limits.h>
10#include <float.h> 10#include <float.h>
11#include <inttypes.h>
11 12
12#if defined(__BORLANDC__) || defined(_MSC_VER) 13#if defined(__BORLANDC__) || defined(_MSC_VER)
13# define snprintf _snprintf // C compilers have this in stdio.h 14# define snprintf _snprintf // C compilers have this in stdio.h
14#endif 15#endif
15 16
16// some old perls do not have this, try to make it work, no 17// 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. 18// guarantees, though. if it breaks, you get to keep the pieces.
18#ifndef UTF8_MAXBYTES 19#ifndef UTF8_MAXBYTES
19# define UTF8_MAXBYTES 13 20# define UTF8_MAXBYTES 13
21#endif
22
23// compatibility with perl <5.18
24#ifndef HvNAMELEN_get
25# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
26#endif
27#ifndef HvNAMELEN
28# define HvNAMELEN(hv) HvNAMELEN_get (hv)
29#endif
30#ifndef HvNAMEUTF8
31# define HvNAMEUTF8(hv) 0
20#endif 32#endif
21 33
22// three extra for rounding, sign, and end of string 34// three extra for rounding, sign, and end of string
23#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3) 35#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)
24 36
33#define F_SHRINK 0x00000200UL 45#define F_SHRINK 0x00000200UL
34#define F_ALLOW_BLESSED 0x00000400UL 46#define F_ALLOW_BLESSED 0x00000400UL
35#define F_CONV_BLESSED 0x00000800UL 47#define F_CONV_BLESSED 0x00000800UL
36#define F_RELAXED 0x00001000UL 48#define F_RELAXED 0x00001000UL
37#define F_ALLOW_UNKNOWN 0x00002000UL 49#define F_ALLOW_UNKNOWN 0x00002000UL
50#define F_ALLOW_TAGS 0x00004000UL
38#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing 51#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
39 52
40#define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER 53#define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER
41 54
42#define INIT_SIZE 32 // initial scalar size to be allocated 55#define INIT_SIZE 64 // initial scalar size to be allocated
43#define INDENT_STEP 3 // spaces per indentation level 56#define INDENT_STEP 3 // spaces per indentation level
44 57
45#define SHORT_STRING_LEN 16384 // special-case strings of up to this size 58#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
46 59
47#define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8) 60#define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8)
65 <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) 78 <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
66 79
67#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)" 80#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"
68 81
69#ifdef USE_ITHREADS 82#ifdef USE_ITHREADS
70# define JSON_SLOW 1
71# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1)) 83# define JSON_STASH (expect_true (json_stash) ? json_stash : gv_stashpv ("JSON::XS", 1))
84# define BOOL_STASH (expect_true (bool_stash) ? bool_stash : gv_stashpv ("Types::Serialiser::Boolean", 1))
85# define GET_BOOL(value) (expect_true (bool_ ## value) ? bool_ ## value : get_bool ("Types::Serialiser::" # value))
72#else 86#else
73# define JSON_SLOW 0
74# define JSON_STASH json_stash 87# define JSON_STASH json_stash
88# define BOOL_STASH bool_stash
89# define GET_BOOL(value) bool_ ## value
75#endif 90#endif
76 91
77// the amount of HEs to allocate on the stack, when sorting keys 92// the amount of HEs to allocate on the stack, when sorting keys
78#define STACK_HES 64 93#define STACK_HES 64
79 94
80static HV *json_stash, *json_boolean_stash; // JSON::XS:: 95static HV *json_stash, *bool_stash; // JSON::XS::, Types::Serialiser::Boolean::
81static SV *json_true, *json_false; 96static SV *bool_false, *bool_true;
97static SV *sv_json;
82 98
83enum { 99enum {
84 INCR_M_WS = 0, // initial whitespace skipping, must be 0 100 INCR_M_WS = 0, // initial whitespace skipping, must be 0
101 INCR_M_TFN, // inside true/false/null
102 INCR_M_NUM, // inside number
85 INCR_M_STR, // inside string 103 INCR_M_STR, // inside string
86 INCR_M_BS, // inside backslash 104 INCR_M_BS, // inside backslash
87 INCR_M_C0, // inside comment in initial whitespace sequence 105 INCR_M_C0, // inside comment in initial whitespace sequence
88 INCR_M_C1, // inside comment in other places 106 INCR_M_C1, // inside comment in other places
89 INCR_M_JSON // outside anything, count nesting 107 INCR_M_JSON // outside anything, count nesting
102 // for the incremental parser 120 // for the incremental parser
103 SV *incr_text; // the source text so far 121 SV *incr_text; // the source text so far
104 STRLEN incr_pos; // the current offset into the text 122 STRLEN incr_pos; // the current offset into the text
105 int incr_nest; // {[]}-nesting level 123 int incr_nest; // {[]}-nesting level
106 unsigned char incr_mode; 124 unsigned char incr_mode;
125
126 SV *v_false, *v_true;
107} JSON; 127} JSON;
108 128
109INLINE void 129INLINE void
110json_init (JSON *json) 130json_init (JSON *json)
111{ 131{
112 Zero (json, 1, JSON); 132 static const JSON init = { F_ALLOW_NONREF, 512 };
113 json->max_depth = 512; 133
134 *json = init;
114} 135}
115 136
116///////////////////////////////////////////////////////////////////////////// 137/////////////////////////////////////////////////////////////////////////////
117// utility functions 138// utility functions
118 139
140 SvPV_renew (sv, SvCUR (sv) + 1); 161 SvPV_renew (sv, SvCUR (sv) + 1);
141#endif 162#endif
142 } 163 }
143} 164}
144 165
166/* adds two STRLENs together, slow, and with paranoia */
167STRLEN
168strlen_sum (STRLEN l1, STRLEN l2)
169{
170 size_t sum = l1 + l2;
171
172 if (sum < (size_t)l2 || sum != (size_t)(STRLEN)sum)
173 croak ("JSON::XS: string size overflow");
174
175 return sum;
176}
177
178/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */
179static char *
180json_sv_grow (SV *sv, size_t len1, size_t len2)
181{
182 len1 = strlen_sum (len1, len2);
183 len1 = strlen_sum (len1, len1 >> 1);
184
185 if (len1 > 4096 - 24)
186 len1 = (len1 | 4095) - 24;
187
188 return SvGROW (sv, len1);
189}
190
145// decode an utf-8 character and return it, or (UV)-1 in 191// decode a utf-8 character and return it, or (UV)-1 in
146// case of an error. 192// case of an error.
147// we special-case "safe" characters from U+80 .. U+7FF, 193// we special-case "safe" characters from U+80 .. U+7FF,
148// but use the very good perl function to parse anything else. 194// but use the very good perl function to parse anything else.
149// note that we never call this function for a ascii codepoints 195// note that we never call this function for a ascii codepoints
150INLINE UV 196INLINE UV
287 // a recursion depth of ten gives us >>500 bits 333 // a recursion depth of ten gives us >>500 bits
288 json_atof_scan1 (s, &accum, &expo, 0, 10); 334 json_atof_scan1 (s, &accum, &expo, 0, 10);
289 335
290 return neg ? -accum : accum; 336 return neg ? -accum : accum;
291} 337}
338
339// target of scalar reference is bool? -1 == nope, 0 == false, 1 == true
340static int
341ref_bool_type (SV *sv)
342{
343 svtype svt = SvTYPE (sv);
344
345 if (svt < SVt_PVAV)
346 {
347 STRLEN len = 0;
348 char *pv = svt ? SvPV (sv, len) : 0;
349
350 if (len == 1)
351 if (*pv == '1')
352 return 1;
353 else if (*pv == '0')
354 return 0;
355 }
356
357 return -1;
358}
359
360// returns whether scalar is not a reference in the sense of allow_nonref
361static int
362json_nonref (SV *scalar)
363{
364 if (!SvROK (scalar))
365 return 1;
366
367 scalar = SvRV (scalar);
368
369 if (SvTYPE (scalar) >= SVt_PVMG)
370 {
371 if (SvSTASH (scalar) == bool_stash)
372 return 1;
373
374 if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0)
375 return 1;
376 }
377
378 return 0;
379}
380
292///////////////////////////////////////////////////////////////////////////// 381/////////////////////////////////////////////////////////////////////////////
293// encoder 382// encoder
294 383
295// structure used for encoding JSON 384// structure used for encoding JSON
296typedef struct 385typedef struct
304} enc_t; 393} enc_t;
305 394
306INLINE void 395INLINE void
307need (enc_t *enc, STRLEN len) 396need (enc_t *enc, STRLEN len)
308{ 397{
309 if (expect_false (enc->cur + len >= enc->end)) 398 if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
310 { 399 {
311 STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); 400 STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
312 SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); 401 char *buf = json_sv_grow (enc->sv, cur, len);
313 enc->cur = SvPVX (enc->sv) + cur; 402 enc->cur = buf + cur;
314 enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; 403 enc->end = buf + SvLEN (enc->sv) - 1;
315 } 404 }
316} 405}
317 406
318INLINE void 407INLINE void
319encode_ch (enc_t *enc, char ch) 408encode_ch (enc_t *enc, char ch)
335 424
336 if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case 425 if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
337 { 426 {
338 if (expect_false (ch == '"')) // but with slow exceptions 427 if (expect_false (ch == '"')) // but with slow exceptions
339 { 428 {
340 need (enc, len += 1); 429 need (enc, len + 1);
341 *enc->cur++ = '\\'; 430 *enc->cur++ = '\\';
342 *enc->cur++ = '"'; 431 *enc->cur++ = '"';
343 } 432 }
344 else if (expect_false (ch == '\\')) 433 else if (expect_false (ch == '\\'))
345 { 434 {
346 need (enc, len += 1); 435 need (enc, len + 1);
347 *enc->cur++ = '\\'; 436 *enc->cur++ = '\\';
348 *enc->cur++ = '\\'; 437 *enc->cur++ = '\\';
349 } 438 }
350 else 439 else
351 *enc->cur++ = ch; 440 *enc->cur++ = ch;
354 } 443 }
355 else 444 else
356 { 445 {
357 switch (ch) 446 switch (ch)
358 { 447 {
359 case '\010': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break; 448 case '\010': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break;
360 case '\011': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break; 449 case '\011': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break;
361 case '\012': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break; 450 case '\012': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break;
362 case '\014': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break; 451 case '\014': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break;
363 case '\015': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break; 452 case '\015': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break;
364 453
365 default: 454 default:
366 { 455 {
367 STRLEN clen; 456 STRLEN clen;
368 UV uch; 457 UV uch;
384 if (uch >= 0x10000UL) 473 if (uch >= 0x10000UL)
385 { 474 {
386 if (uch >= 0x110000UL) 475 if (uch >= 0x110000UL)
387 croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch); 476 croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
388 477
389 need (enc, len += 11); 478 need (enc, len + 11);
390 sprintf (enc->cur, "\\u%04x\\u%04x", 479 sprintf (enc->cur, "\\u%04x\\u%04x",
391 (int)((uch - 0x10000) / 0x400 + 0xD800), 480 (int)((uch - 0x10000) / 0x400 + 0xD800),
392 (int)((uch - 0x10000) % 0x400 + 0xDC00)); 481 (int)((uch - 0x10000) % 0x400 + 0xDC00));
393 enc->cur += 12; 482 enc->cur += 12;
394 } 483 }
395 else 484 else
396 { 485 {
397 need (enc, len += 5); 486 need (enc, len + 5);
398 *enc->cur++ = '\\'; 487 *enc->cur++ = '\\';
399 *enc->cur++ = 'u'; 488 *enc->cur++ = 'u';
400 *enc->cur++ = PL_hexdigit [ uch >> 12 ]; 489 *enc->cur++ = PL_hexdigit [ uch >> 12 ];
401 *enc->cur++ = PL_hexdigit [(uch >> 8) & 15]; 490 *enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
402 *enc->cur++ = PL_hexdigit [(uch >> 4) & 15]; 491 *enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
410 *enc->cur++ = uch; 499 *enc->cur++ = uch;
411 str += clen; 500 str += clen;
412 } 501 }
413 else if (is_utf8) 502 else if (is_utf8)
414 { 503 {
415 need (enc, len += clen); 504 need (enc, len + clen);
416 do 505 do
417 { 506 {
418 *enc->cur++ = *str++; 507 *enc->cur++ = *str++;
419 } 508 }
420 while (--clen); 509 while (--clen);
421 } 510 }
422 else 511 else
423 { 512 {
424 need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed 513 need (enc, len + UTF8_MAXBYTES - 1); // never more than 11 bytes needed
425 enc->cur = encode_utf8 (enc->cur, uch); 514 enc->cur = encode_utf8 (enc->cur, uch);
426 ++str; 515 ++str;
427 } 516 }
428 } 517 }
429 } 518 }
682// encode objects, arrays and special \0=false and \1=true values. 771// encode objects, arrays and special \0=false and \1=true values.
683static void 772static void
684encode_rv (enc_t *enc, SV *sv) 773encode_rv (enc_t *enc, SV *sv)
685{ 774{
686 svtype svt; 775 svtype svt;
776 GV *method;
687 777
688 SvGETMAGIC (sv); 778 SvGETMAGIC (sv);
689 svt = SvTYPE (sv); 779 svt = SvTYPE (sv);
690 780
691 if (expect_false (SvOBJECT (sv))) 781 if (expect_false (SvOBJECT (sv)))
692 { 782 {
693 HV *stash = !JSON_SLOW || json_boolean_stash 783 HV *stash = SvSTASH (sv);
694 ? json_boolean_stash
695 : gv_stashpv ("JSON::XS::Boolean", 1);
696 784
697 if (SvSTASH (sv) == stash) 785 if (stash == bool_stash)
698 { 786 {
699 if (SvIV (sv))
700 encode_str (enc, "true", 4, 0); 787 if (SvIV (sv)) encode_str (enc, "true" , 4, 0);
701 else
702 encode_str (enc, "false", 5, 0); 788 else encode_str (enc, "false", 5, 0);
703 } 789 }
790 else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
791 {
792 int count;
793 dSP;
794
795 ENTER; SAVETMPS;
796 PUSHMARK (SP);
797 EXTEND (SP, 2);
798 // we re-bless the reference to get overload and other niceties right
799 PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
800 PUSHs (sv_json);
801
802 PUTBACK;
803 count = call_sv ((SV *)GvCV (method), G_ARRAY);
804 SPAGAIN;
805
806 // catch this surprisingly common error
807 if (SvROK (TOPs) && SvRV (TOPs) == sv)
808 croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
809
810 encode_ch (enc, '(');
811 encode_ch (enc, '"');
812 encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
813 encode_ch (enc, '"');
814 encode_ch (enc, ')');
815 encode_ch (enc, '[');
816
817 if (count)
818 {
819 int i;
820
821 for (i = 0; i < count - 1; ++i)
822 {
823 encode_sv (enc, SP[i + 1 - count]);
824 encode_ch (enc, ',');
825 }
826
827 encode_sv (enc, TOPs);
828 SP -= count;
829 }
830
831 encode_ch (enc, ']');
832
833 FREETMPS; LEAVE;
834 }
835 else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
836 {
837 dSP;
838
839 ENTER; SAVETMPS;
840 PUSHMARK (SP);
841 // we re-bless the reference to get overload and other niceties right
842 XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
843
844 // calling with G_SCALAR ensures that we always get a 1 return value
845 PUTBACK;
846 call_sv ((SV *)GvCV (method), G_SCALAR);
847 SPAGAIN;
848
849 // catch this surprisingly common error
850 if (SvROK (TOPs) && SvRV (TOPs) == sv)
851 croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
852
853 sv = POPs;
854 PUTBACK;
855
856 encode_sv (enc, sv);
857
858 FREETMPS; LEAVE;
859 }
860 else if (enc->json.flags & F_ALLOW_BLESSED)
861 encode_str (enc, "null", 4, 0);
704 else 862 else
705 {
706#if 0
707 if (0 && sv_derived_from (rv, "JSON::Literal"))
708 {
709 // not yet
710 }
711#endif
712 if (enc->json.flags & F_CONV_BLESSED)
713 {
714 // we re-bless the reference to get overload and other niceties right
715 GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
716
717 if (to_json)
718 {
719 dSP;
720
721 ENTER; SAVETMPS; PUSHMARK (SP);
722 XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
723
724 // calling with G_SCALAR ensures that we always get a 1 return value
725 PUTBACK;
726 call_sv ((SV *)GvCV (to_json), G_SCALAR);
727 SPAGAIN;
728
729 // catch this surprisingly common error
730 if (SvROK (TOPs) && SvRV (TOPs) == sv)
731 croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
732
733 sv = POPs;
734 PUTBACK;
735
736 encode_sv (enc, sv);
737
738 FREETMPS; LEAVE;
739 }
740 else if (enc->json.flags & F_ALLOW_BLESSED)
741 encode_str (enc, "null", 4, 0);
742 else
743 croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
744 SvPV_nolen (sv_2mortal (newRV_inc (sv))));
745 }
746 else if (enc->json.flags & F_ALLOW_BLESSED)
747 encode_str (enc, "null", 4, 0);
748 else
749 croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled", 863 croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
750 SvPV_nolen (sv_2mortal (newRV_inc (sv)))); 864 SvPV_nolen (sv_2mortal (newRV_inc (sv))));
751 }
752 } 865 }
753 else if (svt == SVt_PVHV) 866 else if (svt == SVt_PVHV)
754 encode_hv (enc, (HV *)sv); 867 encode_hv (enc, (HV *)sv);
755 else if (svt == SVt_PVAV) 868 else if (svt == SVt_PVAV)
756 encode_av (enc, (AV *)sv); 869 encode_av (enc, (AV *)sv);
757 else if (svt < SVt_PVAV) 870 else if (svt < SVt_PVAV)
758 { 871 {
759 STRLEN len = 0; 872 int bool_type = ref_bool_type (sv);
760 char *pv = svt ? SvPV (sv, len) : 0;
761 873
762 if (len == 1 && *pv == '1') 874 if (bool_type == 1)
763 encode_str (enc, "true", 4, 0); 875 encode_str (enc, "true", 4, 0);
764 else if (len == 1 && *pv == '0') 876 else if (bool_type == 0)
765 encode_str (enc, "false", 5, 0); 877 encode_str (enc, "false", 5, 0);
766 else if (enc->json.flags & F_ALLOW_UNKNOWN) 878 else if (enc->json.flags & F_ALLOW_UNKNOWN)
767 encode_str (enc, "null", 4, 0); 879 encode_str (enc, "null", 4, 0);
768 else 880 else
769 croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", 881 croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
852static SV * 964static SV *
853encode_json (SV *scalar, JSON *json) 965encode_json (SV *scalar, JSON *json)
854{ 966{
855 enc_t enc; 967 enc_t enc;
856 968
857 if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar)) 969 if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
858 croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); 970 croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
859 971
860 enc.json = *json; 972 enc.json = *json;
861 enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); 973 enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
862 enc.cur = SvPVX (enc.sv); 974 enc.cur = SvPVX (enc.sv);
1069 *cur++ = *dec_cur++; 1181 *cur++ = *dec_cur++;
1070 while (--clen); 1182 while (--clen);
1071 1183
1072 utf8 = 1; 1184 utf8 = 1;
1073 } 1185 }
1186 else if (ch == '\t' && dec->json.flags & F_RELAXED)
1187 *cur++ = ch;
1074 else 1188 else
1075 { 1189 {
1076 --dec_cur; 1190 --dec_cur;
1077 1191
1078 if (!ch) 1192 if (!ch)
1088 1202
1089 if (sv) 1203 if (sv)
1090 { 1204 {
1091 STRLEN cur = SvCUR (sv); 1205 STRLEN cur = SvCUR (sv);
1092 1206
1093 if (SvLEN (sv) <= cur + len) 1207 if (SvLEN (sv) - cur <= len)
1094 SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); 1208 json_sv_grow (sv, cur, len);
1095 1209
1096 memcpy (SvPVX (sv) + SvCUR (sv), buf, len); 1210 memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
1097 SvCUR_set (sv, SvCUR (sv) + len); 1211 SvCUR_set (sv, SvCUR (sv) + len);
1098 } 1212 }
1099 else 1213 else
1400 1514
1401 hv_iterinit (hv); 1515 hv_iterinit (hv);
1402 he = hv_iternext (hv); 1516 he = hv_iternext (hv);
1403 hv_iterinit (hv); 1517 hv_iterinit (hv);
1404 1518
1405 // the next line creates a mortal sv each time its called. 1519 // the next line creates a mortal sv each time it's called.
1406 // might want to optimise this for common cases. 1520 // might want to optimise this for common cases.
1407 cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0); 1521 cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1408 1522
1409 if (cb) 1523 if (cb)
1410 { 1524 {
1411 dSP; 1525 dSP;
1412 int count; 1526 int count;
1413 1527
1414 ENTER; SAVETMPS; PUSHMARK (SP); 1528 ENTER; SAVETMPS;
1529 PUSHMARK (SP);
1415 XPUSHs (HeVAL (he)); 1530 XPUSHs (HeVAL (he));
1416 sv_2mortal (sv); 1531 sv_2mortal (sv);
1417 1532
1418 PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN; 1533 PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1419 1534
1421 { 1536 {
1422 sv = newSVsv (POPs); 1537 sv = newSVsv (POPs);
1423 FREETMPS; LEAVE; 1538 FREETMPS; LEAVE;
1424 return sv; 1539 return sv;
1425 } 1540 }
1541 else if (count)
1542 croak ("filter_json_single_key_object callbacks must not return more than one scalar");
1426 1543
1427 SvREFCNT_inc (sv); 1544 SvREFCNT_inc (sv);
1428 FREETMPS; LEAVE; 1545 FREETMPS; LEAVE;
1429 } 1546 }
1430 } 1547 }
1432 if (dec->json.cb_object) 1549 if (dec->json.cb_object)
1433 { 1550 {
1434 dSP; 1551 dSP;
1435 int count; 1552 int count;
1436 1553
1437 ENTER; SAVETMPS; PUSHMARK (SP); 1554 ENTER; SAVETMPS;
1555 PUSHMARK (SP);
1438 XPUSHs (sv_2mortal (sv)); 1556 XPUSHs (sv_2mortal (sv));
1439 1557
1440 PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN; 1558 PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1441 1559
1442 if (count == 1) 1560 if (count == 1)
1443 { 1561 {
1444 sv = newSVsv (POPs); 1562 sv = newSVsv (POPs);
1445 FREETMPS; LEAVE; 1563 FREETMPS; LEAVE;
1446 return sv; 1564 return sv;
1447 } 1565 }
1566 else if (count)
1567 croak ("filter_json_object callbacks must not return more than one scalar");
1448 1568
1449 SvREFCNT_inc (sv); 1569 SvREFCNT_inc (sv);
1450 FREETMPS; LEAVE; 1570 FREETMPS; LEAVE;
1451 } 1571 }
1452 } 1572 }
1458 DEC_DEC_DEPTH; 1578 DEC_DEC_DEPTH;
1459 return 0; 1579 return 0;
1460} 1580}
1461 1581
1462static SV * 1582static SV *
1583decode_tag (dec_t *dec)
1584{
1585 SV *tag = 0;
1586 SV *val = 0;
1587
1588 if (!(dec->json.flags & F_ALLOW_TAGS))
1589 ERR ("malformed JSON string, neither array, object, number, string or atom");
1590
1591 ++dec->cur;
1592
1593 decode_ws (dec);
1594
1595 tag = decode_sv (dec);
1596 if (!tag)
1597 goto fail;
1598
1599 if (!SvPOK (tag))
1600 ERR ("malformed JSON string, (tag) must be a string");
1601
1602 decode_ws (dec);
1603
1604 if (*dec->cur != ')')
1605 ERR (") expected after tag");
1606
1607 ++dec->cur;
1608
1609 decode_ws (dec);
1610
1611 val = decode_sv (dec);
1612 if (!val)
1613 goto fail;
1614
1615 if (!SvROK (val) || SvTYPE (SvRV (val)) != SVt_PVAV)
1616 ERR ("malformed JSON string, tag value must be an array");
1617
1618 {
1619 AV *av = (AV *)SvRV (val);
1620 int i, len = av_len (av) + 1;
1621 HV *stash = gv_stashsv (tag, 0);
1622 SV *sv;
1623
1624 if (!stash)
1625 ERR ("cannot decode perl-object (package does not exist)");
1626
1627 GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
1628
1629 if (!method)
1630 ERR ("cannot decode perl-object (package does not have a THAW method)");
1631
1632 dSP;
1633
1634 ENTER; SAVETMPS;
1635 PUSHMARK (SP);
1636 EXTEND (SP, len + 2);
1637 // we re-bless the reference to get overload and other niceties right
1638 PUSHs (tag);
1639 PUSHs (sv_json);
1640
1641 for (i = 0; i < len; ++i)
1642 PUSHs (*av_fetch (av, i, 1));
1643
1644 PUTBACK;
1645 call_sv ((SV *)GvCV (method), G_SCALAR);
1646 SPAGAIN;
1647
1648 SvREFCNT_dec (tag);
1649 SvREFCNT_dec (val);
1650 sv = SvREFCNT_inc (POPs);
1651
1652 PUTBACK;
1653
1654 FREETMPS; LEAVE;
1655
1656 return sv;
1657 }
1658
1659fail:
1660 SvREFCNT_dec (tag);
1661 SvREFCNT_dec (val);
1662 return 0;
1663}
1664
1665static SV *
1463decode_sv (dec_t *dec) 1666decode_sv (dec_t *dec)
1464{ 1667{
1465 // the beauty of JSON: you need exactly one character lookahead 1668 // the beauty of JSON: you need exactly one character lookahead
1466 // to parse everything. 1669 // to parse everything.
1467 switch (*dec->cur) 1670 switch (*dec->cur)
1468 { 1671 {
1469 case '"': ++dec->cur; return decode_str (dec); 1672 case '"': ++dec->cur; return decode_str (dec);
1470 case '[': ++dec->cur; return decode_av (dec); 1673 case '[': ++dec->cur; return decode_av (dec);
1471 case '{': ++dec->cur; return decode_hv (dec); 1674 case '{': ++dec->cur; return decode_hv (dec);
1675 case '(': return decode_tag (dec);
1472 1676
1473 case '-': 1677 case '-':
1474 case '0': case '1': case '2': case '3': case '4': 1678 case '0': case '1': case '2': case '3': case '4':
1475 case '5': case '6': case '7': case '8': case '9': 1679 case '5': case '6': case '7': case '8': case '9':
1476 return decode_num (dec); 1680 return decode_num (dec);
1477 1681
1682 case 'f':
1683 if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1684 {
1685 dec->cur += 5;
1686
1687 if (expect_false (!dec->json.v_false))
1688 dec->json.v_false = GET_BOOL (false);
1689
1690 return newSVsv (dec->json.v_false);
1691 }
1692 else
1693 ERR ("'false' expected");
1694
1695 break;
1696
1478 case 't': 1697 case 't':
1479 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) 1698 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1480 { 1699 {
1481 dec->cur += 4; 1700 dec->cur += 4;
1482#if JSON_SLOW 1701
1483 json_true = get_bool ("JSON::XS::true"); 1702 if (expect_false (!dec->json.v_true))
1484#endif 1703 dec->json.v_true = GET_BOOL (true);
1704
1485 return newSVsv (json_true); 1705 return newSVsv (dec->json.v_true);
1486 } 1706 }
1487 else 1707 else
1488 ERR ("'true' expected"); 1708 ERR ("'true' expected");
1489
1490 break;
1491
1492 case 'f':
1493 if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1494 {
1495 dec->cur += 5;
1496#if JSON_SLOW
1497 json_false = get_bool ("JSON::XS::false");
1498#endif
1499 return newSVsv (json_false);
1500 }
1501 else
1502 ERR ("'false' expected");
1503 1709
1504 break; 1710 break;
1505 1711
1506 case 'n': 1712 case 'n':
1507 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) 1713 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
1513 ERR ("'null' expected"); 1719 ERR ("'null' expected");
1514 1720
1515 break; 1721 break;
1516 1722
1517 default: 1723 default:
1518 ERR ("malformed JSON string, neither array, object, number, string or atom"); 1724 ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1519 break; 1725 break;
1520 } 1726 }
1521 1727
1522fail: 1728fail:
1523 return 0; 1729 return 0;
1524} 1730}
1525 1731
1526static SV * 1732static SV *
1527decode_json (SV *string, JSON *json, char **offset_return) 1733decode_json (SV *string, JSON *json, STRLEN *offset_return)
1528{ 1734{
1529 dec_t dec; 1735 dec_t dec;
1530 SV *sv; 1736 SV *sv;
1531 1737
1532 /* work around bugs in 5.10 where manipulating magic values 1738 /* work around bugs in 5.10 where manipulating magic values
1533 * makes perl ignore the magic in subsequent accesses. 1739 * makes perl ignore the magic in subsequent accesses.
1534 * also make a copy of non-PV values, to get them into a clean 1740 * also make a copy of non-PV values, to get them into a clean
1535 * state (SvPV should do that, but it's buggy, see below). 1741 * state (SvPV should do that, but it's buggy, see below).
1742 *
1743 * SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
1744 * as reported by Reini Urban.
1536 */ 1745 */
1537 /*SvGETMAGIC (string);*/ 1746 /*SvGETMAGIC (string);*/
1538 if (SvMAGICAL (string) || !SvPOK (string)) 1747 if (SvMAGICAL (string) || !SvPOK (string) || SvIsCOW_shared_hash (string))
1539 string = sv_2mortal (newSVsv (string)); 1748 string = sv_2mortal (newSVsv (string));
1540 1749
1541 SvUPGRADE (string, SVt_PV); 1750 SvUPGRADE (string, SVt_PV);
1542 1751
1543 /* work around a bug in perl 5.10, which causes SvCUR to fail an 1752 /* work around a bug in perl 5.10, which causes SvCUR to fail an
1582 1791
1583 decode_ws (&dec); 1792 decode_ws (&dec);
1584 sv = decode_sv (&dec); 1793 sv = decode_sv (&dec);
1585 1794
1586 if (offset_return) 1795 if (offset_return)
1587 *offset_return = dec.cur; 1796 *offset_return = dec.cur - SvPVX (string);
1588 1797 else if (sv)
1589 if (!(offset_return || !sv))
1590 { 1798 {
1591 // check for trailing garbage 1799 // check for trailing garbage
1592 decode_ws (&dec); 1800 decode_ws (&dec);
1593 1801
1594 if (*dec.cur) 1802 if (dec.cur != dec.end)
1595 { 1803 {
1596 dec.err = "garbage after JSON object"; 1804 dec.err = "garbage after JSON object";
1597 SvREFCNT_dec (sv); 1805 SvREFCNT_dec (sv);
1598 sv = 0; 1806 sv = 0;
1599 } 1807 }
1618 dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); 1826 dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1619 } 1827 }
1620 1828
1621 sv = sv_2mortal (sv); 1829 sv = sv_2mortal (sv);
1622 1830
1623 if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv)) 1831 if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1624 croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); 1832 croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1625 1833
1626 return sv; 1834 return sv;
1627} 1835}
1628 1836
1637 // the state machine here is a bit convoluted and could be simplified a lot 1845 // the state machine here is a bit convoluted and could be simplified a lot
1638 // but this would make it slower, so... 1846 // but this would make it slower, so...
1639 1847
1640 for (;;) 1848 for (;;)
1641 { 1849 {
1642 //printf ("loop pod %d *p<%c><%s>, mode %d nest %d\n", p - SvPVX (self->incr_text), *p, p, self->incr_mode, self->incr_nest);//D
1643 switch (self->incr_mode) 1850 switch (self->incr_mode)
1644 { 1851 {
1852 // reached end of a scalar, see if we are inside a nested structure or not
1853 end_of_scalar:
1854 self->incr_mode = INCR_M_JSON;
1855
1856 if (self->incr_nest) // end of a scalar inside array, object or tag
1857 goto incr_m_json;
1858 else // end of scalar outside structure, json text ends here
1859 goto interrupt;
1860
1645 // only used for initial whitespace skipping 1861 // only used for initial whitespace skipping
1646 case INCR_M_WS: 1862 case INCR_M_WS:
1647 for (;;) 1863 for (;;)
1648 { 1864 {
1649 if (*p > 0x20) 1865 if (*p > 0x20)
1691 ++p; 1907 ++p;
1692 } 1908 }
1693 1909
1694 break; 1910 break;
1695 1911
1912 // inside true/false/null
1913 case INCR_M_TFN:
1914 incr_m_tfn:
1915 for (;;)
1916 switch (*p++)
1917 {
1918 case 'r': case 'u': case 'e': // tRUE, falsE, nUll
1919 case 'a': case 'l': case 's': // fALSe, nuLL
1920 // allowed
1921 break;
1922
1923 default:
1924 --p;
1925 goto end_of_scalar;
1926 }
1927
1928 // inside a number
1929 case INCR_M_NUM:
1930 incr_m_num:
1931 for (;;)
1932 switch (*p++)
1933 {
1934 case 'e': case 'E': case '.': case '+':
1935 case '-':
1936 case '0': case '1': case '2': case '3': case '4':
1937 case '5': case '6': case '7': case '8': case '9':
1938 // allowed
1939 break;
1940
1941 default:
1942 --p;
1943 goto end_of_scalar;
1944 }
1945
1696 // inside a string 1946 // inside a string
1697 case INCR_M_STR: 1947 case INCR_M_STR:
1698 incr_m_str: 1948 incr_m_str:
1699 for (;;) 1949 for (;;)
1700 { 1950 {
1701 if (*p == '"') 1951 if (*p == '"')
1702 { 1952 {
1703 ++p; 1953 ++p;
1704 self->incr_mode = INCR_M_JSON;
1705
1706 if (!self->incr_nest)
1707 goto interrupt;
1708
1709 goto incr_m_json; 1954 goto end_of_scalar;
1710 } 1955 }
1711 else if (*p == '\\') 1956 else if (*p == '\\')
1712 { 1957 {
1713 ++p; // "virtually" consumes character after \ 1958 ++p; // "virtually" consumes character after \
1714 1959
1744 --p; // do not eat the whitespace, let the next round do it 1989 --p; // do not eat the whitespace, let the next round do it
1745 goto interrupt; 1990 goto interrupt;
1746 } 1991 }
1747 break; 1992 break;
1748 1993
1994 // the following three blocks handle scalars. this makes the parser
1995 // more strict than required inside arrays or objects, and could
1996 // be moved to a special case on the toplevel (except strings)
1997 case 't':
1998 case 'f':
1999 case 'n':
2000 self->incr_mode = INCR_M_TFN;
2001 goto incr_m_tfn;
2002
2003 case '-':
2004 case '0': case '1': case '2': case '3': case '4':
2005 case '5': case '6': case '7': case '8': case '9':
2006 self->incr_mode = INCR_M_NUM;
2007 goto incr_m_num;
2008
1749 case '"': 2009 case '"':
1750 self->incr_mode = INCR_M_STR; 2010 self->incr_mode = INCR_M_STR;
1751 goto incr_m_str; 2011 goto incr_m_str;
1752 2012
1753 case '[': 2013 case '[':
1754 case '{': 2014 case '{':
2015 case '(':
1755 if (++self->incr_nest > self->max_depth) 2016 if (++self->incr_nest > self->max_depth)
1756 croak (ERR_NESTING_EXCEEDED); 2017 croak (ERR_NESTING_EXCEEDED);
1757 break; 2018 break;
1758 2019
1759 case ']': 2020 case ']':
1760 case '}': 2021 case '}':
1761 if (--self->incr_nest <= 0) 2022 if (--self->incr_nest <= 0)
1762 goto interrupt; 2023 goto interrupt;
2024 break;
2025
2026 case ')':
2027 --self->incr_nest;
1763 break; 2028 break;
1764 2029
1765 case '#': 2030 case '#':
1766 self->incr_mode = INCR_M_C1; 2031 self->incr_mode = INCR_M_C1;
1767 goto incr_m_c; 2032 goto incr_m_c;
1793 i >= '0' && i <= '9' ? i - '0' 2058 i >= '0' && i <= '9' ? i - '0'
1794 : i >= 'a' && i <= 'f' ? i - 'a' + 10 2059 : i >= 'a' && i <= 'f' ? i - 'a' + 10
1795 : i >= 'A' && i <= 'F' ? i - 'A' + 10 2060 : i >= 'A' && i <= 'F' ? i - 'A' + 10
1796 : -1; 2061 : -1;
1797 2062
1798 json_stash = gv_stashpv ("JSON::XS" , 1); 2063 json_stash = gv_stashpv ("JSON::XS" , 1);
1799 json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1); 2064 bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1800
1801 json_true = get_bool ("JSON::XS::true");
1802 json_false = get_bool ("JSON::XS::false"); 2065 bool_false = get_bool ("Types::Serialiser::false");
2066 bool_true = get_bool ("Types::Serialiser::true");
2067
2068 sv_json = newSVpv ("JSON", 0);
2069 SvREADONLY_on (sv_json);
1803 2070
1804 CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */ 2071 CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1805} 2072}
1806 2073
1807PROTOTYPES: DISABLE 2074PROTOTYPES: DISABLE
1808 2075
1809void CLONE (...) 2076void CLONE (...)
1810 CODE: 2077 CODE:
2078 // as long as these writes are atomic, the race should not matter
2079 // as existing threads either already use 0, or use the old value,
2080 // which is sitll correct for the initial thread.
1811 json_stash = 0; 2081 json_stash = 0;
1812 json_boolean_stash = 0; 2082 bool_stash = 0;
2083 bool_false = 0;
2084 bool_true = 0;
1813 2085
1814void new (char *klass) 2086void new (char *klass)
1815 PPCODE: 2087 PPCODE:
1816{ 2088{
1817 SV *pv = NEWSV (0, sizeof (JSON)); 2089 SV *pv = NEWSV (0, sizeof (JSON));
1820 XPUSHs (sv_2mortal (sv_bless ( 2092 XPUSHs (sv_2mortal (sv_bless (
1821 newRV_noinc (pv), 2093 newRV_noinc (pv),
1822 strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1) 2094 strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1823 ))); 2095 )));
1824} 2096}
2097
2098void boolean_values (JSON *self, SV *v_false = 0, SV *v_true = 0)
2099 PPCODE:
2100 self->v_false = newSVsv (v_false);
2101 self->v_true = newSVsv (v_true);
2102 XPUSHs (ST (0));
2103
2104void get_boolean_values (JSON *self)
2105 PPCODE:
2106 if (self->v_false && self->v_true)
2107 {
2108 EXTEND (SP, 2);
2109 PUSHs (self->v_false);
2110 PUSHs (self->v_true);
2111 }
1825 2112
1826void ascii (JSON *self, int enable = 1) 2113void ascii (JSON *self, int enable = 1)
1827 ALIAS: 2114 ALIAS:
1828 ascii = F_ASCII 2115 ascii = F_ASCII
1829 latin1 = F_LATIN1 2116 latin1 = F_LATIN1
1837 shrink = F_SHRINK 2124 shrink = F_SHRINK
1838 allow_blessed = F_ALLOW_BLESSED 2125 allow_blessed = F_ALLOW_BLESSED
1839 convert_blessed = F_CONV_BLESSED 2126 convert_blessed = F_CONV_BLESSED
1840 relaxed = F_RELAXED 2127 relaxed = F_RELAXED
1841 allow_unknown = F_ALLOW_UNKNOWN 2128 allow_unknown = F_ALLOW_UNKNOWN
2129 allow_tags = F_ALLOW_TAGS
1842 PPCODE: 2130 PPCODE:
1843{ 2131{
1844 if (enable) 2132 if (enable)
1845 self->flags |= ix; 2133 self->flags |= ix;
1846 else 2134 else
1862 get_shrink = F_SHRINK 2150 get_shrink = F_SHRINK
1863 get_allow_blessed = F_ALLOW_BLESSED 2151 get_allow_blessed = F_ALLOW_BLESSED
1864 get_convert_blessed = F_CONV_BLESSED 2152 get_convert_blessed = F_CONV_BLESSED
1865 get_relaxed = F_RELAXED 2153 get_relaxed = F_RELAXED
1866 get_allow_unknown = F_ALLOW_UNKNOWN 2154 get_allow_unknown = F_ALLOW_UNKNOWN
2155 get_allow_tags = F_ALLOW_TAGS
1867 PPCODE: 2156 PPCODE:
1868 XPUSHs (boolSV (self->flags & ix)); 2157 XPUSHs (boolSV (self->flags & ix));
1869 2158
1870void max_depth (JSON *self, U32 max_depth = 0x80000000UL) 2159void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1871 PPCODE: 2160 PPCODE:
1932 2221
1933void decode_prefix (JSON *self, SV *jsonstr) 2222void decode_prefix (JSON *self, SV *jsonstr)
1934 PPCODE: 2223 PPCODE:
1935{ 2224{
1936 SV *sv; 2225 SV *sv;
1937 char *offset; 2226 STRLEN offset;
1938 PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN; 2227 PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1939 EXTEND (SP, 2); 2228 EXTEND (SP, 2);
1940 PUSHs (sv); 2229 PUSHs (sv);
1941 PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset)))); 2230 PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
1942} 2231}
1943 2232
1944void incr_parse (JSON *self, SV *jsonstr = 0) 2233void incr_parse (JSON *self, SV *jsonstr = 0)
1945 PPCODE: 2234 PPCODE:
1946{ 2235{
1980 { 2269 {
1981 STRLEN len; 2270 STRLEN len;
1982 const char *str = SvPV (jsonstr, len); 2271 const char *str = SvPV (jsonstr, len);
1983 STRLEN cur = SvCUR (self->incr_text); 2272 STRLEN cur = SvCUR (self->incr_text);
1984 2273
1985 if (SvLEN (self->incr_text) <= cur + len) 2274 if (SvLEN (self->incr_text) - cur <= len)
1986 SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); 2275 json_sv_grow (self->incr_text, cur, len);
1987 2276
1988 Move (str, SvEND (self->incr_text), len, char); 2277 Move (str, SvEND (self->incr_text), len, char);
1989 SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len); 2278 SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
1990 *SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there 2279 *SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1991 } 2280 }
1993 2282
1994 if (GIMME_V != G_VOID) 2283 if (GIMME_V != G_VOID)
1995 do 2284 do
1996 { 2285 {
1997 SV *sv; 2286 SV *sv;
1998 char *offset; 2287 STRLEN offset;
1999 2288
2000 if (!INCR_DONE (self)) 2289 if (!INCR_DONE (self))
2001 { 2290 {
2002 incr_parse (self); 2291 incr_parse (self);
2003 2292
2019 } 2308 }
2020 2309
2021 PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN; 2310 PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
2022 XPUSHs (sv); 2311 XPUSHs (sv);
2023 2312
2024 self->incr_pos -= offset - SvPVX (self->incr_text); 2313 self->incr_pos -= offset;
2025 self->incr_nest = 0; 2314 self->incr_nest = 0;
2026 self->incr_mode = 0; 2315 self->incr_mode = 0;
2027 2316
2028 sv_chop (self->incr_text, offset); 2317 sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
2029 } 2318 }
2030 while (GIMME_V == G_ARRAY); 2319 while (GIMME_V == G_ARRAY);
2031} 2320}
2032 2321
2033SV *incr_text (JSON *self) 2322SV *incr_text (JSON *self)
2064 self->incr_mode = 0; 2353 self->incr_mode = 0;
2065} 2354}
2066 2355
2067void DESTROY (JSON *self) 2356void DESTROY (JSON *self)
2068 CODE: 2357 CODE:
2358 SvREFCNT_dec (self->v_false);
2359 SvREFCNT_dec (self->v_true);
2069 SvREFCNT_dec (self->cb_sk_object); 2360 SvREFCNT_dec (self->cb_sk_object);
2070 SvREFCNT_dec (self->cb_object); 2361 SvREFCNT_dec (self->cb_object);
2071 SvREFCNT_dec (self->incr_text); 2362 SvREFCNT_dec (self->incr_text);
2072 2363
2073PROTOTYPES: ENABLE 2364PROTOTYPES: ENABLE

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