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Comparing JSON-XS/XS.xs (file contents):
Revision 1.104 by root, Tue Jan 19 00:31:13 2010 UTC vs.
Revision 1.135 by root, Thu Nov 15 20:49:12 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
59
60#define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8)
46 61
47#define SB do { 62#define SB do {
48#define SE } while (0) 63#define SE } while (0)
49 64
50#if __GNUC__ >= 3 65#if __GNUC__ >= 3
… …
63 <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) 78 <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
64 79
65#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?)"
66 81
67#ifdef USE_ITHREADS 82#ifdef USE_ITHREADS
68# define JSON_SLOW 1
69# 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))
70#else 86#else
71# define JSON_SLOW 0
72# define JSON_STASH json_stash 87# define JSON_STASH json_stash
88# define BOOL_STASH bool_stash
89# define GET_BOOL(value) bool_ ## value
73#endif 90#endif
74 91
75static HV *json_stash, *json_boolean_stash; // JSON::XS:: 92// the amount of HEs to allocate on the stack, when sorting keys
76static SV *json_true, *json_false; 93#define STACK_HES 64
94
95static HV *json_stash, *bool_stash; // JSON::XS::, Types::Serialiser::Boolean::
96static SV *bool_false, *bool_true;
97static SV *sv_json;
77 98
78enum { 99enum {
79 INCR_M_WS = 0, // initial whitespace skipping, must be 0 100 INCR_M_WS = 0, // initial whitespace skipping, must be 0
80 INCR_M_STR, // inside string 101 INCR_M_STR, // inside string
81 INCR_M_BS, // inside backslash 102 INCR_M_BS, // inside backslash
… …
97 // for the incremental parser 118 // for the incremental parser
98 SV *incr_text; // the source text so far 119 SV *incr_text; // the source text so far
99 STRLEN incr_pos; // the current offset into the text 120 STRLEN incr_pos; // the current offset into the text
100 int incr_nest; // {[]}-nesting level 121 int incr_nest; // {[]}-nesting level
101 unsigned char incr_mode; 122 unsigned char incr_mode;
123
124 SV *v_false, *v_true;
102} JSON; 125} JSON;
103 126
104INLINE void 127INLINE void
105json_init (JSON *json) 128json_init (JSON *json)
106{ 129{
107 Zero (json, 1, JSON); 130 static const JSON init = { F_ALLOW_NONREF, 512 };
108 json->max_depth = 512; 131
132 *json = init;
109} 133}
110 134
111///////////////////////////////////////////////////////////////////////////// 135/////////////////////////////////////////////////////////////////////////////
112// utility functions 136// utility functions
113 137
… …
135 SvPV_renew (sv, SvCUR (sv) + 1); 159 SvPV_renew (sv, SvCUR (sv) + 1);
136#endif 160#endif
137 } 161 }
138} 162}
139 163
164/* adds two STRLENs together, slow, and with paranoia */
165STRLEN
166strlen_sum (STRLEN l1, STRLEN l2)
167{
168 size_t sum = l1 + l2;
169
170 if (sum < (size_t)l2 || sum != (size_t)(STRLEN)sum)
171 croak ("JSON::XS: string size overflow");
172
173 return sum;
174}
175
176/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */
177static char *
178json_sv_grow (SV *sv, size_t len1, size_t len2)
179{
180 len1 = strlen_sum (len1, len2);
181 len1 = strlen_sum (len1, len1 >> 1);
182
183 if (len1 > 4096 - 24)
184 len1 = (len1 | 4095) - 24;
185
186 return SvGROW (sv, len1);
187}
188
140// decode an utf-8 character and return it, or (UV)-1 in 189// decode a utf-8 character and return it, or (UV)-1 in
141// case of an error. 190// case of an error.
142// we special-case "safe" characters from U+80 .. U+7FF, 191// we special-case "safe" characters from U+80 .. U+7FF,
143// but use the very good perl function to parse anything else. 192// but use the very good perl function to parse anything else.
144// note that we never call this function for a ascii codepoints 193// note that we never call this function for a ascii codepoints
145INLINE UV 194INLINE UV
… …
192///////////////////////////////////////////////////////////////////////////// 241/////////////////////////////////////////////////////////////////////////////
193// fp hell 242// fp hell
194 243
195// scan a group of digits, and a trailing exponent 244// scan a group of digits, and a trailing exponent
196static void 245static void
197json_atof_scan1 (const char *s, NV *accum, int *expo, int postdp) 246json_atof_scan1 (const char *s, NV *accum, int *expo, int postdp, int maxdepth)
198{ 247{
199 UV uaccum = 0; 248 UV uaccum = 0;
200 int eaccum = 0; 249 int eaccum = 0;
250
251 // if we recurse too deep, skip all remaining digits
252 // to avoid a stack overflow attack
253 if (expect_false (--maxdepth <= 0))
254 while (((U8)*s - '0') < 10)
255 ++s;
201 256
202 for (;;) 257 for (;;)
203 { 258 {
204 U8 dig = (U8)*s - '0'; 259 U8 dig = (U8)*s - '0';
205 260
206 if (expect_false (dig >= 10)) 261 if (expect_false (dig >= 10))
207 { 262 {
208 if (dig == (U8)((U8)'.' - (U8)'0')) 263 if (dig == (U8)((U8)'.' - (U8)'0'))
209 { 264 {
210 ++s; 265 ++s;
211 json_atof_scan1 (s, accum, expo, 1); 266 json_atof_scan1 (s, accum, expo, 1, maxdepth);
212 } 267 }
213 else if ((dig | ' ') == 'e' - '0') 268 else if ((dig | ' ') == 'e' - '0')
214 { 269 {
215 int exp2 = 0; 270 int exp2 = 0;
216 int neg = 0; 271 int neg = 0;
… …
242 // if we have too many digits, then recurse for more 297 // if we have too many digits, then recurse for more
243 // we actually do this for rather few digits 298 // we actually do this for rather few digits
244 if (uaccum >= (UV_MAX - 9) / 10) 299 if (uaccum >= (UV_MAX - 9) / 10)
245 { 300 {
246 if (postdp) *expo -= eaccum; 301 if (postdp) *expo -= eaccum;
247 json_atof_scan1 (s, accum, expo, postdp); 302 json_atof_scan1 (s, accum, expo, postdp, maxdepth);
248 if (postdp) *expo += eaccum; 303 if (postdp) *expo += eaccum;
249 304
250 break; 305 break;
251 } 306 }
252 } 307 }
253 308
309 // this relies greatly on the quality of the pow ()
310 // implementation of the platform, but a good
311 // implementation is hard to beat.
312 // (IEEE 754 conformant ones are required to be exact)
254 if (postdp) *expo -= eaccum; 313 if (postdp) *expo -= eaccum;
255 *accum += uaccum * pow (10., *expo); 314 *accum += uaccum * Perl_pow (10., *expo);
256 *expo += eaccum; 315 *expo += eaccum;
257} 316}
258 317
259static NV 318static NV
260json_atof (const char *s) 319json_atof (const char *s)
… …
267 { 326 {
268 ++s; 327 ++s;
269 neg = 1; 328 neg = 1;
270 } 329 }
271 330
331 // a recursion depth of ten gives us >>500 bits
272 json_atof_scan1 (s, &accum, &expo, 0); 332 json_atof_scan1 (s, &accum, &expo, 0, 10);
273 333
274 return neg ? -accum : accum; 334 return neg ? -accum : accum;
275} 335}
336
337// target of scalar reference is bool? -1 == nope, 0 == false, 1 == true
338static int
339ref_bool_type (SV *sv)
340{
341 svtype svt = SvTYPE (sv);
342
343 if (svt < SVt_PVAV)
344 {
345 STRLEN len = 0;
346 char *pv = svt ? SvPV (sv, len) : 0;
347
348 if (len == 1)
349 if (*pv == '1')
350 return 1;
351 else if (*pv == '0')
352 return 0;
353 }
354
355 return -1;
356}
357
358// returns whether scalar is not a reference in the sense of allow_nonref
359static int
360json_nonref (SV *scalar)
361{
362 if (!SvROK (scalar))
363 return 1;
364
365 scalar = SvRV (scalar);
366
367 if (SvTYPE (scalar) >= SVt_PVMG)
368 {
369 if (SvSTASH (scalar) == bool_stash)
370 return 1;
371
372 if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0)
373 return 1;
374 }
375
376 return 0;
377}
378
276///////////////////////////////////////////////////////////////////////////// 379/////////////////////////////////////////////////////////////////////////////
277// encoder 380// encoder
278 381
279// structure used for encoding JSON 382// structure used for encoding JSON
280typedef struct 383typedef struct
… …
288} enc_t; 391} enc_t;
289 392
290INLINE void 393INLINE void
291need (enc_t *enc, STRLEN len) 394need (enc_t *enc, STRLEN len)
292{ 395{
293 if (expect_false (enc->cur + len >= enc->end)) 396 if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
294 { 397 {
295 STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); 398 STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
296 SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); 399 char *buf = json_sv_grow (enc->sv, cur, len);
297 enc->cur = SvPVX (enc->sv) + cur; 400 enc->cur = buf + cur;
298 enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; 401 enc->end = buf + SvLEN (enc->sv) - 1;
299 } 402 }
300} 403}
301 404
302INLINE void 405INLINE void
303encode_ch (enc_t *enc, char ch) 406encode_ch (enc_t *enc, char ch)
… …
319 422
320 if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case 423 if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
321 { 424 {
322 if (expect_false (ch == '"')) // but with slow exceptions 425 if (expect_false (ch == '"')) // but with slow exceptions
323 { 426 {
324 need (enc, len += 1); 427 need (enc, len + 1);
325 *enc->cur++ = '\\'; 428 *enc->cur++ = '\\';
326 *enc->cur++ = '"'; 429 *enc->cur++ = '"';
327 } 430 }
328 else if (expect_false (ch == '\\')) 431 else if (expect_false (ch == '\\'))
329 { 432 {
330 need (enc, len += 1); 433 need (enc, len + 1);
331 *enc->cur++ = '\\'; 434 *enc->cur++ = '\\';
332 *enc->cur++ = '\\'; 435 *enc->cur++ = '\\';
333 } 436 }
334 else 437 else
335 *enc->cur++ = ch; 438 *enc->cur++ = ch;
… …
338 } 441 }
339 else 442 else
340 { 443 {
341 switch (ch) 444 switch (ch)
342 { 445 {
343 case '\010': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break; 446 case '\010': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break;
344 case '\011': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break; 447 case '\011': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break;
345 case '\012': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break; 448 case '\012': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break;
346 case '\014': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break; 449 case '\014': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break;
347 case '\015': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break; 450 case '\015': need (enc, len + 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break;
348 451
349 default: 452 default:
350 { 453 {
351 STRLEN clen; 454 STRLEN clen;
352 UV uch; 455 UV uch;
… …
368 if (uch >= 0x10000UL) 471 if (uch >= 0x10000UL)
369 { 472 {
370 if (uch >= 0x110000UL) 473 if (uch >= 0x110000UL)
371 croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch); 474 croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
372 475
373 need (enc, len += 11); 476 need (enc, len + 11);
374 sprintf (enc->cur, "\\u%04x\\u%04x", 477 sprintf (enc->cur, "\\u%04x\\u%04x",
375 (int)((uch - 0x10000) / 0x400 + 0xD800), 478 (int)((uch - 0x10000) / 0x400 + 0xD800),
376 (int)((uch - 0x10000) % 0x400 + 0xDC00)); 479 (int)((uch - 0x10000) % 0x400 + 0xDC00));
377 enc->cur += 12; 480 enc->cur += 12;
378 } 481 }
379 else 482 else
380 { 483 {
381 need (enc, len += 5); 484 need (enc, len + 5);
382 *enc->cur++ = '\\'; 485 *enc->cur++ = '\\';
383 *enc->cur++ = 'u'; 486 *enc->cur++ = 'u';
384 *enc->cur++ = PL_hexdigit [ uch >> 12 ]; 487 *enc->cur++ = PL_hexdigit [ uch >> 12 ];
385 *enc->cur++ = PL_hexdigit [(uch >> 8) & 15]; 488 *enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
386 *enc->cur++ = PL_hexdigit [(uch >> 4) & 15]; 489 *enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
… …
394 *enc->cur++ = uch; 497 *enc->cur++ = uch;
395 str += clen; 498 str += clen;
396 } 499 }
397 else if (is_utf8) 500 else if (is_utf8)
398 { 501 {
399 need (enc, len += clen); 502 need (enc, len + clen);
400 do 503 do
401 { 504 {
402 *enc->cur++ = *str++; 505 *enc->cur++ = *str++;
403 } 506 }
404 while (--clen); 507 while (--clen);
405 } 508 }
406 else 509 else
407 { 510 {
408 need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed 511 need (enc, len + UTF8_MAXBYTES - 1); // never more than 11 bytes needed
409 enc->cur = encode_utf8 (enc->cur, uch); 512 enc->cur = encode_utf8 (enc->cur, uch);
410 ++str; 513 ++str;
411 } 514 }
412 } 515 }
413 } 516 }
… …
467 570
468 if (enc->indent >= enc->json.max_depth) 571 if (enc->indent >= enc->json.max_depth)
469 croak (ERR_NESTING_EXCEEDED); 572 croak (ERR_NESTING_EXCEEDED);
470 573
471 encode_ch (enc, '['); 574 encode_ch (enc, '[');
472 575
473 if (len >= 0) 576 if (len >= 0)
474 { 577 {
475 encode_nl (enc); ++enc->indent; 578 encode_nl (enc); ++enc->indent;
476 579
477 for (i = 0; i <= len; ++i) 580 for (i = 0; i <= len; ++i)
… …
489 encode_comma (enc); 592 encode_comma (enc);
490 } 593 }
491 594
492 encode_nl (enc); --enc->indent; encode_indent (enc); 595 encode_nl (enc); --enc->indent; encode_indent (enc);
493 } 596 }
494 597
495 encode_ch (enc, ']'); 598 encode_ch (enc, ']');
496} 599}
497 600
498static void 601static void
499encode_hk (enc_t *enc, HE *he) 602encode_hk (enc_t *enc, HE *he)
… …
503 if (HeKLEN (he) == HEf_SVKEY) 606 if (HeKLEN (he) == HEf_SVKEY)
504 { 607 {
505 SV *sv = HeSVKEY (he); 608 SV *sv = HeSVKEY (he);
506 STRLEN len; 609 STRLEN len;
507 char *str; 610 char *str;
508 611
509 SvGETMAGIC (sv); 612 SvGETMAGIC (sv);
510 str = SvPV (sv, len); 613 str = SvPV (sv, len);
511 614
512 encode_str (enc, str, len, SvUTF8 (sv)); 615 encode_str (enc, str, len, SvUTF8 (sv));
513 } 616 }
… …
579 } 682 }
580 683
581 if (count) 684 if (count)
582 { 685 {
583 int i, fast = 1; 686 int i, fast = 1;
584#if defined(__BORLANDC__) || defined(_MSC_VER) 687 HE *hes_stack [STACK_HES];
585 HE **hes = _alloca (count * sizeof (HE)); 688 HE **hes = hes_stack;
586#else 689
587 HE *hes [count]; // if your compiler dies here, you need to enable C99 mode 690 // allocate larger arrays on the heap
588#endif 691 if (count > STACK_HES)
692 {
693 SV *sv = sv_2mortal (NEWSV (0, count * sizeof (*hes)));
694 hes = (HE **)SvPVX (sv);
695 }
589 696
590 i = 0; 697 i = 0;
591 while ((he = hv_iternext (hv))) 698 while ((he = hv_iternext (hv)))
592 { 699 {
593 hes [i++] = he; 700 hes [i++] = he;
… …
662// encode objects, arrays and special \0=false and \1=true values. 769// encode objects, arrays and special \0=false and \1=true values.
663static void 770static void
664encode_rv (enc_t *enc, SV *sv) 771encode_rv (enc_t *enc, SV *sv)
665{ 772{
666 svtype svt; 773 svtype svt;
774 GV *method;
667 775
668 SvGETMAGIC (sv); 776 SvGETMAGIC (sv);
669 svt = SvTYPE (sv); 777 svt = SvTYPE (sv);
670 778
671 if (expect_false (SvOBJECT (sv))) 779 if (expect_false (SvOBJECT (sv)))
672 { 780 {
673 HV *stash = !JSON_SLOW || json_boolean_stash 781 HV *stash = SvSTASH (sv);
674 ? json_boolean_stash
675 : gv_stashpv ("JSON::XS::Boolean", 1);
676 782
677 if (SvSTASH (sv) == stash) 783 if (stash == bool_stash)
678 { 784 {
679 if (SvIV (sv))
680 encode_str (enc, "true", 4, 0); 785 if (SvIV (sv)) encode_str (enc, "true" , 4, 0);
681 else
682 encode_str (enc, "false", 5, 0); 786 else encode_str (enc, "false", 5, 0);
683 } 787 }
788 else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
789 {
790 int count;
791 dSP;
792
793 ENTER; SAVETMPS;
794 PUSHMARK (SP);
795 EXTEND (SP, 2);
796 // we re-bless the reference to get overload and other niceties right
797 PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
798 PUSHs (sv_json);
799
800 PUTBACK;
801 count = call_sv ((SV *)GvCV (method), G_ARRAY);
802 SPAGAIN;
803
804 // catch this surprisingly common error
805 if (SvROK (TOPs) && SvRV (TOPs) == sv)
806 croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
807
808 encode_ch (enc, '(');
809 encode_ch (enc, '"');
810 encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
811 encode_ch (enc, '"');
812 encode_ch (enc, ')');
813 encode_ch (enc, '[');
814
815 if (count)
816 {
817 int i;
818
819 for (i = 0; i < count - 1; ++i)
820 {
821 encode_sv (enc, SP[i + 1 - count]);
822 encode_ch (enc, ',');
823 }
824
825 encode_sv (enc, TOPs);
826 SP -= count;
827 }
828
829 encode_ch (enc, ']');
830
831 FREETMPS; LEAVE;
832 }
833 else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
834 {
835 dSP;
836
837 ENTER; SAVETMPS;
838 PUSHMARK (SP);
839 // we re-bless the reference to get overload and other niceties right
840 XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
841
842 // calling with G_SCALAR ensures that we always get a 1 return value
843 PUTBACK;
844 call_sv ((SV *)GvCV (method), G_SCALAR);
845 SPAGAIN;
846
847 // catch this surprisingly common error
848 if (SvROK (TOPs) && SvRV (TOPs) == sv)
849 croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
850
851 sv = POPs;
852 PUTBACK;
853
854 encode_sv (enc, sv);
855
856 FREETMPS; LEAVE;
857 }
858 else if (enc->json.flags & F_ALLOW_BLESSED)
859 encode_str (enc, "null", 4, 0);
684 else 860 else
685 {
686#if 0
687 if (0 && sv_derived_from (rv, "JSON::Literal"))
688 {
689 // not yet
690 }
691#endif
692 if (enc->json.flags & F_CONV_BLESSED)
693 {
694 // we re-bless the reference to get overload and other niceties right
695 GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
696
697 if (to_json)
698 {
699 dSP;
700
701 ENTER; SAVETMPS; PUSHMARK (SP);
702 XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
703
704 // calling with G_SCALAR ensures that we always get a 1 return value
705 PUTBACK;
706 call_sv ((SV *)GvCV (to_json), G_SCALAR);
707 SPAGAIN;
708
709 // catch this surprisingly common error
710 if (SvROK (TOPs) && SvRV (TOPs) == sv)
711 croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
712
713 sv = POPs;
714 PUTBACK;
715
716 encode_sv (enc, sv);
717
718 FREETMPS; LEAVE;
719 }
720 else if (enc->json.flags & F_ALLOW_BLESSED)
721 encode_str (enc, "null", 4, 0);
722 else
723 croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
724 SvPV_nolen (sv_2mortal (newRV_inc (sv))));
725 }
726 else if (enc->json.flags & F_ALLOW_BLESSED)
727 encode_str (enc, "null", 4, 0);
728 else
729 croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled", 861 croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
730 SvPV_nolen (sv_2mortal (newRV_inc (sv)))); 862 SvPV_nolen (sv_2mortal (newRV_inc (sv))));
731 }
732 } 863 }
733 else if (svt == SVt_PVHV) 864 else if (svt == SVt_PVHV)
734 encode_hv (enc, (HV *)sv); 865 encode_hv (enc, (HV *)sv);
735 else if (svt == SVt_PVAV) 866 else if (svt == SVt_PVAV)
736 encode_av (enc, (AV *)sv); 867 encode_av (enc, (AV *)sv);
737 else if (svt < SVt_PVAV) 868 else if (svt < SVt_PVAV)
738 { 869 {
739 STRLEN len = 0; 870 int bool_type = ref_bool_type (sv);
740 char *pv = svt ? SvPV (sv, len) : 0;
741 871
742 if (len == 1 && *pv == '1') 872 if (bool_type == 1)
743 encode_str (enc, "true", 4, 0); 873 encode_str (enc, "true", 4, 0);
744 else if (len == 1 && *pv == '0') 874 else if (bool_type == 0)
745 encode_str (enc, "false", 5, 0); 875 encode_str (enc, "false", 5, 0);
746 else if (enc->json.flags & F_ALLOW_UNKNOWN) 876 else if (enc->json.flags & F_ALLOW_UNKNOWN)
747 encode_str (enc, "null", 4, 0); 877 encode_str (enc, "null", 4, 0);
748 else 878 else
749 croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", 879 croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
… …
812 } 942 }
813 else 943 else
814 { 944 {
815 // large integer, use the (rather slow) snprintf way. 945 // large integer, use the (rather slow) snprintf way.
816 need (enc, IVUV_MAXCHARS); 946 need (enc, IVUV_MAXCHARS);
817 enc->cur += 947 enc->cur +=
818 SvIsUV(sv) 948 SvIsUV(sv)
819 ? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv)) 949 ? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
820 : snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv)); 950 : snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
821 } 951 }
822 } 952 }
823 else if (SvROK (sv)) 953 else if (SvROK (sv))
824 encode_rv (enc, SvRV (sv)); 954 encode_rv (enc, SvRV (sv));
825 else if (!SvOK (sv) || enc->json.flags & F_ALLOW_UNKNOWN) 955 else if (!SvOK (sv) || enc->json.flags & F_ALLOW_UNKNOWN)
826 encode_str (enc, "null", 4, 0); 956 encode_str (enc, "null", 4, 0);
827 else 957 else
828 croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this", 958 croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
829 SvPV_nolen (sv), SvFLAGS (sv)); 959 SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
830} 960}
831 961
832static SV * 962static SV *
833encode_json (SV *scalar, JSON *json) 963encode_json (SV *scalar, JSON *json)
834{ 964{
835 enc_t enc; 965 enc_t enc;
836 966
837 if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar)) 967 if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
838 croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)"); 968 croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
839 969
840 enc.json = *json; 970 enc.json = *json;
841 enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); 971 enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
842 enc.cur = SvPVX (enc.sv); 972 enc.cur = SvPVX (enc.sv);
… …
1049 *cur++ = *dec_cur++; 1179 *cur++ = *dec_cur++;
1050 while (--clen); 1180 while (--clen);
1051 1181
1052 utf8 = 1; 1182 utf8 = 1;
1053 } 1183 }
1184 else if (ch == '\t' && dec->json.flags & F_RELAXED)
1185 *cur++ = ch;
1054 else 1186 else
1055 { 1187 {
1056 --dec_cur; 1188 --dec_cur;
1057 1189
1058 if (!ch) 1190 if (!ch)
… …
1068 1200
1069 if (sv) 1201 if (sv)
1070 { 1202 {
1071 STRLEN cur = SvCUR (sv); 1203 STRLEN cur = SvCUR (sv);
1072 1204
1073 if (SvLEN (sv) <= cur + len) 1205 if (SvLEN (sv) - cur <= len)
1074 SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); 1206 json_sv_grow (sv, cur, len);
1075 1207
1076 memcpy (SvPVX (sv) + SvCUR (sv), buf, len); 1208 memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
1077 SvCUR_set (sv, SvCUR (sv) + len); 1209 SvCUR_set (sv, SvCUR (sv) + len);
1078 } 1210 }
1079 else 1211 else
… …
1246 if (*dec->cur == ']') 1378 if (*dec->cur == ']')
1247 { 1379 {
1248 ++dec->cur; 1380 ++dec->cur;
1249 break; 1381 break;
1250 } 1382 }
1251 1383
1252 if (*dec->cur != ',') 1384 if (*dec->cur != ',')
1253 ERR (", or ] expected while parsing array"); 1385 ERR (", or ] expected while parsing array");
1254 1386
1255 ++dec->cur; 1387 ++dec->cur;
1256 1388
… …
1380 1512
1381 hv_iterinit (hv); 1513 hv_iterinit (hv);
1382 he = hv_iternext (hv); 1514 he = hv_iternext (hv);
1383 hv_iterinit (hv); 1515 hv_iterinit (hv);
1384 1516
1385 // the next line creates a mortal sv each time its called. 1517 // the next line creates a mortal sv each time it's called.
1386 // might want to optimise this for common cases. 1518 // might want to optimise this for common cases.
1387 cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0); 1519 cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1388 1520
1389 if (cb) 1521 if (cb)
1390 { 1522 {
1391 dSP; 1523 dSP;
1392 int count; 1524 int count;
1393 1525
1394 ENTER; SAVETMPS; PUSHMARK (SP); 1526 ENTER; SAVETMPS;
1527 PUSHMARK (SP);
1395 XPUSHs (HeVAL (he)); 1528 XPUSHs (HeVAL (he));
1529 sv_2mortal (sv);
1396 1530
1397 PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN; 1531 PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1398 1532
1399 if (count == 1) 1533 if (count == 1)
1400 { 1534 {
1401 sv = newSVsv (POPs); 1535 sv = newSVsv (POPs);
1402 FREETMPS; LEAVE; 1536 FREETMPS; LEAVE;
1403 return sv; 1537 return sv;
1404 } 1538 }
1539 else if (count)
1540 croak ("filter_json_single_key_object callbacks must not return more than one scalar");
1405 1541
1542 SvREFCNT_inc (sv);
1406 FREETMPS; LEAVE; 1543 FREETMPS; LEAVE;
1407 } 1544 }
1408 } 1545 }
1409 1546
1410 if (dec->json.cb_object) 1547 if (dec->json.cb_object)
1411 { 1548 {
1412 dSP; 1549 dSP;
1413 int count; 1550 int count;
1414 1551
1415 ENTER; SAVETMPS; PUSHMARK (SP); 1552 ENTER; SAVETMPS;
1553 PUSHMARK (SP);
1416 XPUSHs (sv_2mortal (sv)); 1554 XPUSHs (sv_2mortal (sv));
1417 1555
1418 PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN; 1556 PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1419 1557
1420 if (count == 1) 1558 if (count == 1)
1421 { 1559 {
1422 sv = newSVsv (POPs); 1560 sv = newSVsv (POPs);
1423 FREETMPS; LEAVE; 1561 FREETMPS; LEAVE;
1424 return sv; 1562 return sv;
1425 } 1563 }
1564 else if (count)
1565 croak ("filter_json_object callbacks must not return more than one scalar");
1426 1566
1427 SvREFCNT_inc (sv); 1567 SvREFCNT_inc (sv);
1428 FREETMPS; LEAVE; 1568 FREETMPS; LEAVE;
1429 } 1569 }
1430 } 1570 }
… …
1436 DEC_DEC_DEPTH; 1576 DEC_DEC_DEPTH;
1437 return 0; 1577 return 0;
1438} 1578}
1439 1579
1440static SV * 1580static SV *
1581decode_tag (dec_t *dec)
1582{
1583 SV *tag = 0;
1584 SV *val = 0;
1585
1586 if (!(dec->json.flags & F_ALLOW_TAGS))
1587 ERR ("malformed JSON string, neither array, object, number, string or atom");
1588
1589 ++dec->cur;
1590
1591 decode_ws (dec);
1592
1593 tag = decode_sv (dec);
1594 if (!tag)
1595 goto fail;
1596
1597 if (!SvPOK (tag))
1598 ERR ("malformed JSON string, (tag) must be a string");
1599
1600 decode_ws (dec);
1601
1602 if (*dec->cur != ')')
1603 ERR (") expected after tag");
1604
1605 ++dec->cur;
1606
1607 decode_ws (dec);
1608
1609 val = decode_sv (dec);
1610 if (!val)
1611 goto fail;
1612
1613 if (!SvROK (val) || SvTYPE (SvRV (val)) != SVt_PVAV)
1614 ERR ("malformed JSON string, tag value must be an array");
1615
1616 {
1617 AV *av = (AV *)SvRV (val);
1618 int i, len = av_len (av) + 1;
1619 HV *stash = gv_stashsv (tag, 0);
1620 SV *sv;
1621
1622 if (!stash)
1623 ERR ("cannot decode perl-object (package does not exist)");
1624
1625 GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
1626
1627 if (!method)
1628 ERR ("cannot decode perl-object (package does not have a THAW method)");
1629
1630 dSP;
1631
1632 ENTER; SAVETMPS;
1633 PUSHMARK (SP);
1634 EXTEND (SP, len + 2);
1635 // we re-bless the reference to get overload and other niceties right
1636 PUSHs (tag);
1637 PUSHs (sv_json);
1638
1639 for (i = 0; i < len; ++i)
1640 PUSHs (*av_fetch (av, i, 1));
1641
1642 PUTBACK;
1643 call_sv ((SV *)GvCV (method), G_SCALAR);
1644 SPAGAIN;
1645
1646 SvREFCNT_dec (tag);
1647 SvREFCNT_dec (val);
1648 sv = SvREFCNT_inc (POPs);
1649
1650 PUTBACK;
1651
1652 FREETMPS; LEAVE;
1653
1654 return sv;
1655 }
1656
1657fail:
1658 SvREFCNT_dec (tag);
1659 SvREFCNT_dec (val);
1660 return 0;
1661}
1662
1663static SV *
1441decode_sv (dec_t *dec) 1664decode_sv (dec_t *dec)
1442{ 1665{
1443 // the beauty of JSON: you need exactly one character lookahead 1666 // the beauty of JSON: you need exactly one character lookahead
1444 // to parse everything. 1667 // to parse everything.
1445 switch (*dec->cur) 1668 switch (*dec->cur)
1446 { 1669 {
1447 case '"': ++dec->cur; return decode_str (dec); 1670 case '"': ++dec->cur; return decode_str (dec);
1448 case '[': ++dec->cur; return decode_av (dec); 1671 case '[': ++dec->cur; return decode_av (dec);
1449 case '{': ++dec->cur; return decode_hv (dec); 1672 case '{': ++dec->cur; return decode_hv (dec);
1673 case '(': return decode_tag (dec);
1450 1674
1451 case '-': 1675 case '-':
1452 case '0': case '1': case '2': case '3': case '4': 1676 case '0': case '1': case '2': case '3': case '4':
1453 case '5': case '6': case '7': case '8': case '9': 1677 case '5': case '6': case '7': case '8': case '9':
1454 return decode_num (dec); 1678 return decode_num (dec);
1455 1679
1680 case 'f':
1681 if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1682 {
1683 dec->cur += 5;
1684
1685 if (expect_false (!dec->json.v_false))
1686 dec->json.v_false = GET_BOOL (false);
1687
1688 return newSVsv (dec->json.v_false);
1689 }
1690 else
1691 ERR ("'false' expected");
1692
1693 break;
1694
1456 case 't': 1695 case 't':
1457 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) 1696 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1458 { 1697 {
1459 dec->cur += 4; 1698 dec->cur += 4;
1460#if JSON_SLOW 1699
1461 json_true = get_bool ("JSON::XS::true"); 1700 if (expect_false (!dec->json.v_true))
1462#endif 1701 dec->json.v_true = GET_BOOL (true);
1702
1463 return newSVsv (json_true); 1703 return newSVsv (dec->json.v_true);
1464 } 1704 }
1465 else 1705 else
1466 ERR ("'true' expected"); 1706 ERR ("'true' expected");
1467
1468 break;
1469
1470 case 'f':
1471 if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1472 {
1473 dec->cur += 5;
1474#if JSON_SLOW
1475 json_false = get_bool ("JSON::XS::false");
1476#endif
1477 return newSVsv (json_false);
1478 }
1479 else
1480 ERR ("'false' expected");
1481 1707
1482 break; 1708 break;
1483 1709
1484 case 'n': 1710 case 'n':
1485 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) 1711 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
… …
1491 ERR ("'null' expected"); 1717 ERR ("'null' expected");
1492 1718
1493 break; 1719 break;
1494 1720
1495 default: 1721 default:
1496 ERR ("malformed JSON string, neither array, object, number, string or atom"); 1722 ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1497 break; 1723 break;
1498 } 1724 }
1499 1725
1500fail: 1726fail:
1501 return 0; 1727 return 0;
1502} 1728}
1503 1729
1504static SV * 1730static SV *
1505decode_json (SV *string, JSON *json, char **offset_return) 1731decode_json (SV *string, JSON *json, STRLEN *offset_return)
1506{ 1732{
1507 dec_t dec; 1733 dec_t dec;
1508 SV *sv; 1734 SV *sv;
1509 1735
1510 /* work around bugs in 5.10 where manipulating magic values 1736 /* work around bugs in 5.10 where manipulating magic values
1511 * will perl ignore the magic in subsequent accesses 1737 * makes perl ignore the magic in subsequent accesses.
1738 * also make a copy of non-PV values, to get them into a clean
1739 * state (SvPV should do that, but it's buggy, see below).
1740 *
1741 * SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
1742 * as reported by Reini Urban.
1512 */ 1743 */
1513 /*SvGETMAGIC (string);*/ 1744 /*SvGETMAGIC (string);*/
1514 if (SvMAGICAL (string)) 1745 if (SvMAGICAL (string) || !SvPOK (string) || SvIsCOW_shared_hash (string))
1515 string = sv_2mortal (newSVsv (string)); 1746 string = sv_2mortal (newSVsv (string));
1516 1747
1517 SvUPGRADE (string, SVt_PV); 1748 SvUPGRADE (string, SVt_PV);
1518 1749
1519 /* work around a bug in perl 5.10, which causes SvCUR to fail an 1750 /* work around a bug in perl 5.10, which causes SvCUR to fail an
… …
1536 if (offset > json->max_size && json->max_size) 1767 if (offset > json->max_size && json->max_size)
1537 croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", 1768 croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1538 (unsigned long)SvCUR (string), (unsigned long)json->max_size); 1769 (unsigned long)SvCUR (string), (unsigned long)json->max_size);
1539 } 1770 }
1540 1771
1541 if (json->flags & F_UTF8) 1772 if (DECODE_WANTS_OCTETS (json))
1542 sv_utf8_downgrade (string, 0); 1773 sv_utf8_downgrade (string, 0);
1543 else 1774 else
1544 sv_utf8_upgrade (string); 1775 sv_utf8_upgrade (string);
1545 1776
1546 SvGROW (string, SvCUR (string) + 1); // should basically be a NOP 1777 SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
… …
1558 1789
1559 decode_ws (&dec); 1790 decode_ws (&dec);
1560 sv = decode_sv (&dec); 1791 sv = decode_sv (&dec);
1561 1792
1562 if (offset_return) 1793 if (offset_return)
1563 *offset_return = dec.cur; 1794 *offset_return = dec.cur - SvPVX (string);
1564 1795 else if (sv)
1565 if (!(offset_return || !sv))
1566 { 1796 {
1567 // check for trailing garbage 1797 // check for trailing garbage
1568 decode_ws (&dec); 1798 decode_ws (&dec);
1569 1799
1570 if (*dec.cur) 1800 if (dec.cur != dec.end)
1571 { 1801 {
1572 dec.err = "garbage after JSON object"; 1802 dec.err = "garbage after JSON object";
1573 SvREFCNT_dec (sv); 1803 SvREFCNT_dec (sv);
1574 sv = 0; 1804 sv = 0;
1575 } 1805 }
… …
1588 pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); 1818 pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1589 LEAVE; 1819 LEAVE;
1590 1820
1591 croak ("%s, at character offset %d (before \"%s\")", 1821 croak ("%s, at character offset %d (before \"%s\")",
1592 dec.err, 1822 dec.err,
1593 ptr_to_index (string, dec.cur), 1823 (int)ptr_to_index (string, dec.cur),
1594 dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); 1824 dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1595 } 1825 }
1596 1826
1597 sv = sv_2mortal (sv); 1827 sv = sv_2mortal (sv);
1598 1828
1599 if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv)) 1829 if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1600 croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)"); 1830 croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1601 1831
1602 return sv; 1832 return sv;
1603} 1833}
1604 1834
… …
1726 self->incr_mode = INCR_M_STR; 1956 self->incr_mode = INCR_M_STR;
1727 goto incr_m_str; 1957 goto incr_m_str;
1728 1958
1729 case '[': 1959 case '[':
1730 case '{': 1960 case '{':
1961 case '(':
1731 if (++self->incr_nest > self->max_depth) 1962 if (++self->incr_nest > self->max_depth)
1732 croak (ERR_NESTING_EXCEEDED); 1963 croak (ERR_NESTING_EXCEEDED);
1733 break; 1964 break;
1734 1965
1735 case ']': 1966 case ']':
1736 case '}': 1967 case '}':
1737 if (--self->incr_nest <= 0) 1968 if (--self->incr_nest <= 0)
1738 goto interrupt; 1969 goto interrupt;
1970 break;
1971
1972 case ')':
1973 --self->incr_nest;
1739 break; 1974 break;
1740 1975
1741 case '#': 1976 case '#':
1742 self->incr_mode = INCR_M_C1; 1977 self->incr_mode = INCR_M_C1;
1743 goto incr_m_c; 1978 goto incr_m_c;
… …
1769 i >= '0' && i <= '9' ? i - '0' 2004 i >= '0' && i <= '9' ? i - '0'
1770 : i >= 'a' && i <= 'f' ? i - 'a' + 10 2005 : i >= 'a' && i <= 'f' ? i - 'a' + 10
1771 : i >= 'A' && i <= 'F' ? i - 'A' + 10 2006 : i >= 'A' && i <= 'F' ? i - 'A' + 10
1772 : -1; 2007 : -1;
1773 2008
1774 json_stash = gv_stashpv ("JSON::XS" , 1); 2009 json_stash = gv_stashpv ("JSON::XS" , 1);
1775 json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1); 2010 bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1776
1777 json_true = get_bool ("JSON::XS::true");
1778 json_false = get_bool ("JSON::XS::false"); 2011 bool_false = get_bool ("Types::Serialiser::false");
2012 bool_true = get_bool ("Types::Serialiser::true");
2013
2014 sv_json = newSVpv ("JSON", 0);
2015 SvREADONLY_on (sv_json);
1779 2016
1780 CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */ 2017 CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1781} 2018}
1782 2019
1783PROTOTYPES: DISABLE 2020PROTOTYPES: DISABLE
1784 2021
1785void CLONE (...) 2022void CLONE (...)
1786 CODE: 2023 CODE:
2024 // as long as these writes are atomic, the race should not matter
2025 // as existing threads either already use 0, or use the old value,
2026 // which is sitll correct for the initial thread.
1787 json_stash = 0; 2027 json_stash = 0;
1788 json_boolean_stash = 0; 2028 bool_stash = 0;
2029 bool_false = 0;
2030 bool_true = 0;
1789 2031
1790void new (char *klass) 2032void new (char *klass)
1791 PPCODE: 2033 PPCODE:
1792{ 2034{
1793 SV *pv = NEWSV (0, sizeof (JSON)); 2035 SV *pv = NEWSV (0, sizeof (JSON));
1794 SvPOK_only (pv); 2036 SvPOK_only (pv);
1795 json_init ((JSON *)SvPVX (pv)); 2037 json_init ((JSON *)SvPVX (pv));
1796 XPUSHs (sv_2mortal (sv_bless ( 2038 XPUSHs (sv_2mortal (sv_bless (
1797 newRV_noinc (pv), 2039 newRV_noinc (pv),
1798 strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1) 2040 strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1799 ))); 2041 )));
1800} 2042}
2043
2044void boolean_values (JSON *self, SV *v_false = 0, SV *v_true = 0)
2045 PPCODE:
2046 self->v_false = newSVsv (v_false);
2047 self->v_true = newSVsv (v_true);
2048 XPUSHs (ST (0));
2049
2050void get_boolean_values (JSON *self)
2051 PPCODE:
2052 if (self->v_false && self->v_true)
2053 {
2054 EXTEND (SP, 2);
2055 PUSHs (self->v_false);
2056 PUSHs (self->v_true);
2057 }
1801 2058
1802void ascii (JSON *self, int enable = 1) 2059void ascii (JSON *self, int enable = 1)
1803 ALIAS: 2060 ALIAS:
1804 ascii = F_ASCII 2061 ascii = F_ASCII
1805 latin1 = F_LATIN1 2062 latin1 = F_LATIN1
… …
1813 shrink = F_SHRINK 2070 shrink = F_SHRINK
1814 allow_blessed = F_ALLOW_BLESSED 2071 allow_blessed = F_ALLOW_BLESSED
1815 convert_blessed = F_CONV_BLESSED 2072 convert_blessed = F_CONV_BLESSED
1816 relaxed = F_RELAXED 2073 relaxed = F_RELAXED
1817 allow_unknown = F_ALLOW_UNKNOWN 2074 allow_unknown = F_ALLOW_UNKNOWN
2075 allow_tags = F_ALLOW_TAGS
1818 PPCODE: 2076 PPCODE:
1819{ 2077{
1820 if (enable) 2078 if (enable)
1821 self->flags |= ix; 2079 self->flags |= ix;
1822 else 2080 else
… …
1838 get_shrink = F_SHRINK 2096 get_shrink = F_SHRINK
1839 get_allow_blessed = F_ALLOW_BLESSED 2097 get_allow_blessed = F_ALLOW_BLESSED
1840 get_convert_blessed = F_CONV_BLESSED 2098 get_convert_blessed = F_CONV_BLESSED
1841 get_relaxed = F_RELAXED 2099 get_relaxed = F_RELAXED
1842 get_allow_unknown = F_ALLOW_UNKNOWN 2100 get_allow_unknown = F_ALLOW_UNKNOWN
2101 get_allow_tags = F_ALLOW_TAGS
1843 PPCODE: 2102 PPCODE:
1844 XPUSHs (boolSV (self->flags & ix)); 2103 XPUSHs (boolSV (self->flags & ix));
1845 2104
1846void max_depth (JSON *self, U32 max_depth = 0x80000000UL) 2105void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1847 PPCODE: 2106 PPCODE:
… …
1875} 2134}
1876 2135
1877void filter_json_single_key_object (JSON *self, SV *key, SV *cb = &PL_sv_undef) 2136void filter_json_single_key_object (JSON *self, SV *key, SV *cb = &PL_sv_undef)
1878 PPCODE: 2137 PPCODE:
1879{ 2138{
1880 if (!self->cb_sk_object) 2139 if (!self->cb_sk_object)
1881 self->cb_sk_object = newHV (); 2140 self->cb_sk_object = newHV ();
1882 2141
1883 if (SvOK (cb)) 2142 if (SvOK (cb))
1884 hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); 2143 hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1885 else 2144 else
… …
1896 XPUSHs (ST (0)); 2155 XPUSHs (ST (0));
1897} 2156}
1898 2157
1899void encode (JSON *self, SV *scalar) 2158void encode (JSON *self, SV *scalar)
1900 PPCODE: 2159 PPCODE:
1901 XPUSHs (encode_json (scalar, self)); 2160 PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
2161 XPUSHs (scalar);
1902 2162
1903void decode (JSON *self, SV *jsonstr) 2163void decode (JSON *self, SV *jsonstr)
1904 PPCODE: 2164 PPCODE:
1905 XPUSHs (decode_json (jsonstr, self, 0)); 2165 PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
2166 XPUSHs (jsonstr);
1906 2167
1907void decode_prefix (JSON *self, SV *jsonstr) 2168void decode_prefix (JSON *self, SV *jsonstr)
1908 PPCODE: 2169 PPCODE:
1909{ 2170{
1910 char *offset; 2171 SV *sv;
2172 STRLEN offset;
2173 PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1911 EXTEND (SP, 2); 2174 EXTEND (SP, 2);
1912 PUSHs (decode_json (jsonstr, self, &offset)); 2175 PUSHs (sv);
1913 PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset)))); 2176 PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
1914} 2177}
1915 2178
1916void incr_parse (JSON *self, SV *jsonstr = 0) 2179void incr_parse (JSON *self, SV *jsonstr = 0)
1917 PPCODE: 2180 PPCODE:
1918{ 2181{
1919 if (!self->incr_text) 2182 if (!self->incr_text)
1920 self->incr_text = newSVpvn ("", 0); 2183 self->incr_text = newSVpvn ("", 0);
2184
2185 /* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
2186 if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
2187 if (DECODE_WANTS_OCTETS (self))
2188 {
2189 if (self->incr_pos)
2190 self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
2191 (U8 *)SvPVX (self->incr_text) + self->incr_pos);
2192
2193 sv_utf8_downgrade (self->incr_text, 0);
2194 }
2195 else
2196 {
2197 sv_utf8_upgrade (self->incr_text);
2198
2199 if (self->incr_pos)
2200 self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
2201 - (U8 *)SvPVX (self->incr_text);
2202 }
1921 2203
1922 // append data, if any 2204 // append data, if any
1923 if (jsonstr) 2205 if (jsonstr)
1924 { 2206 {
2207 /* make sure both strings have same encoding */
2208 if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
1925 if (SvUTF8 (jsonstr)) 2209 if (SvUTF8 (jsonstr))
2210 sv_utf8_downgrade (jsonstr, 0);
1926 { 2211 else
1927 if (!SvUTF8 (self->incr_text))
1928 {
1929 /* utf-8-ness differs, need to upgrade */
1930 sv_utf8_upgrade (self->incr_text);
1931
1932 if (self->incr_pos)
1933 self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
1934 - (U8 *)SvPVX (self->incr_text);
1935 }
1936 }
1937 else if (SvUTF8 (self->incr_text))
1938 sv_utf8_upgrade (jsonstr); 2212 sv_utf8_upgrade (jsonstr);
1939 2213
2214 /* and then just blindly append */
1940 { 2215 {
1941 STRLEN len; 2216 STRLEN len;
1942 const char *str = SvPV (jsonstr, len); 2217 const char *str = SvPV (jsonstr, len);
1943 STRLEN cur = SvCUR (self->incr_text); 2218 STRLEN cur = SvCUR (self->incr_text);
1944 2219
1945 if (SvLEN (self->incr_text) <= cur + len) 2220 if (SvLEN (self->incr_text) - cur <= len)
1946 SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); 2221 json_sv_grow (self->incr_text, cur, len);
1947 2222
1948 Move (str, SvEND (self->incr_text), len, char); 2223 Move (str, SvEND (self->incr_text), len, char);
1949 SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len); 2224 SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
1950 *SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there 2225 *SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1951 } 2226 }
1952 } 2227 }
1953 2228
1954 if (GIMME_V != G_VOID) 2229 if (GIMME_V != G_VOID)
1955 do 2230 do
1956 { 2231 {
2232 SV *sv;
1957 char *offset; 2233 STRLEN offset;
1958 2234
1959 if (!INCR_DONE (self)) 2235 if (!INCR_DONE (self))
1960 { 2236 {
1961 incr_parse (self); 2237 incr_parse (self);
1962 2238
1963 if (self->incr_pos > self->max_size && self->max_size) 2239 if (self->incr_pos > self->max_size && self->max_size)
1964 croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu", 2240 croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1965 (unsigned long)self->incr_pos, (unsigned long)self->max_size); 2241 (unsigned long)self->incr_pos, (unsigned long)self->max_size);
1966 2242
1967 if (!INCR_DONE (self)) 2243 if (!INCR_DONE (self))
2244 {
2245 // as an optimisation, do not accumulate white space in the incr buffer
2246 if (self->incr_mode == INCR_M_WS && self->incr_pos)
2247 {
2248 self->incr_pos = 0;
2249 SvCUR_set (self->incr_text, 0);
2250 }
2251
1968 break; 2252 break;
2253 }
1969 } 2254 }
1970 2255
1971 XPUSHs (decode_json (self->incr_text, self, &offset)); 2256 PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
2257 XPUSHs (sv);
1972 2258
1973 self->incr_pos -= offset - SvPVX (self->incr_text); 2259 self->incr_pos -= offset;
1974 self->incr_nest = 0; 2260 self->incr_nest = 0;
1975 self->incr_mode = 0; 2261 self->incr_mode = 0;
1976 2262
1977 sv_chop (self->incr_text, offset); 2263 sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
1978 } 2264 }
1979 while (GIMME_V == G_ARRAY); 2265 while (GIMME_V == G_ARRAY);
1980} 2266}
1981 2267
1982SV *incr_text (JSON *self) 2268SV *incr_text (JSON *self)
… …
2013 self->incr_mode = 0; 2299 self->incr_mode = 0;
2014} 2300}
2015 2301
2016void DESTROY (JSON *self) 2302void DESTROY (JSON *self)
2017 CODE: 2303 CODE:
2304 SvREFCNT_dec (self->v_false);
2305 SvREFCNT_dec (self->v_true);
2018 SvREFCNT_dec (self->cb_sk_object); 2306 SvREFCNT_dec (self->cb_sk_object);
2019 SvREFCNT_dec (self->cb_object); 2307 SvREFCNT_dec (self->cb_object);
2020 SvREFCNT_dec (self->incr_text); 2308 SvREFCNT_dec (self->incr_text);
2021 2309
2022PROTOTYPES: ENABLE 2310PROTOTYPES: ENABLE
2023 2311
2024void encode_json (SV *scalar) 2312void encode_json (SV *scalar)
2025 ALIAS:
2026 to_json_ = 0
2027 encode_json = F_UTF8
2028 PPCODE: 2313 PPCODE:
2029{ 2314{
2030 JSON json; 2315 JSON json;
2031 json_init (&json); 2316 json_init (&json);
2032 json.flags |= ix; 2317 json.flags |= F_UTF8;
2033 XPUSHs (encode_json (scalar, &json)); 2318 PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
2319 XPUSHs (scalar);
2034} 2320}
2035 2321
2036void decode_json (SV *jsonstr) 2322void decode_json (SV *jsonstr)
2037 ALIAS:
2038 from_json_ = 0
2039 decode_json = F_UTF8
2040 PPCODE: 2323 PPCODE:
2041{ 2324{
2042 JSON json; 2325 JSON json;
2043 json_init (&json); 2326 json_init (&json);
2044 json.flags |= ix; 2327 json.flags |= F_UTF8;
2045 XPUSHs (decode_json (jsonstr, &json, 0)); 2328 PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
2329 XPUSHs (jsonstr);
2046} 2330}
2047 2331

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