[ViewVC] Diff of: cvs/JSON-XS/XS.xs

Comparing JSON-XS/XS.xs (file contents):
Revision 1.105 by root, Tue Jan 19 01:07:27 2010 UTC vs.
Revision 1.138 by root, Wed Mar 6 07:21:17 2019 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
75	static HV json_stash, json_boolean_stash; // JSON::XS::	92	// the amount of HEs to allocate on the stack, when sorting keys
76	static SV json_true, json_false;	93	#define STACK_HES 64
		94
		95	static HV json_stash, bool_stash; // JSON::XS::, Types::Serialiser::Boolean::
		96	static SV bool_false, bool_true;
		97	static SV *sv_json;
77		98
78	enum {	99	enum {
79	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
80	INCR_M_STR, // inside string	103	INCR_M_STR, // inside string
81	INCR_M_BS, // inside backslash	104	INCR_M_BS, // inside backslash
82	INCR_M_C0, // inside comment in initial whitespace sequence	105	INCR_M_C0, // inside comment in initial whitespace sequence
83	INCR_M_C1, // inside comment in other places	106	INCR_M_C1, // inside comment in other places
84	INCR_M_JSON // outside anything, count nesting	107	INCR_M_JSON // outside anything, count nesting
…		…
97	// for the incremental parser	120	// for the incremental parser
98	SV *incr_text; // the source text so far	121	SV *incr_text; // the source text so far
99	STRLEN incr_pos; // the current offset into the text	122	STRLEN incr_pos; // the current offset into the text
100	int incr_nest; // {[]}-nesting level	123	int incr_nest; // {[]}-nesting level
101	unsigned char incr_mode;	124	unsigned char incr_mode;
		125
		126	SV v_false, v_true;
102	} JSON;	127	} JSON;
103		128
104	INLINE void	129	INLINE void
105	json_init (JSON *json)	130	json_init (JSON *json)
106	{	131	{
107	Zero (json, 1, JSON);	132	static const JSON init = { F_ALLOW_NONREF, 512 };
108	json->max_depth = 512;	133
		134	*json = init;
109	}	135	}
110		136
111	/////////////////////////////////////////////////////////////////////////////	137	/////////////////////////////////////////////////////////////////////////////
112	// utility functions	138	// utility functions
113		139
…		…
135	SvPV_renew (sv, SvCUR (sv) + 1);	161	SvPV_renew (sv, SvCUR (sv) + 1);
136	#endif	162	#endif
137	}	163	}
138	}	164	}
139		165
		166	/* adds two STRLENs together, slow, and with paranoia */
		167	STRLEN
		168	strlen_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 */
		179	static char *
		180	json_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
140	// 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
141	// case of an error.	192	// case of an error.
142	// we special-case "safe" characters from U+80 .. U+7FF,	193	// we special-case "safe" characters from U+80 .. U+7FF,
143	// but use the very good perl function to parse anything else.	194	// but use the very good perl function to parse anything else.
144	// note that we never call this function for a ascii codepoints	195	// note that we never call this function for a ascii codepoints
145	INLINE UV	196	INLINE UV
…		…
192	/////////////////////////////////////////////////////////////////////////////	243	/////////////////////////////////////////////////////////////////////////////
193	// fp hell	244	// fp hell
194		245
195	// scan a group of digits, and a trailing exponent	246	// scan a group of digits, and a trailing exponent
196	static void	247	static void
197	json_atof_scan1 (const char s, NV accum, int *expo, int postdp)	248	json_atof_scan1 (const char s, NV accum, int *expo, int postdp, int maxdepth)
198	{	249	{
199	UV uaccum = 0;	250	UV uaccum = 0;
200	int eaccum = 0;	251	int eaccum = 0;
		252
		253	// if we recurse too deep, skip all remaining digits
		254	// to avoid a stack overflow attack
		255	if (expect_false (--maxdepth <= 0))
		256	while (((U8)*s - '0') < 10)
		257	++s;
201		258
202	for (;;)	259	for (;;)
203	{	260	{
204	U8 dig = (U8)*s - '0';	261	U8 dig = (U8)*s - '0';
205		262
206	if (expect_false (dig >= 10))	263	if (expect_false (dig >= 10))
207	{	264	{
208	if (dig == (U8)((U8)'.' - (U8)'0'))	265	if (dig == (U8)((U8)'.' - (U8)'0'))
209	{	266	{
210	++s;	267	++s;
211	json_atof_scan1 (s, accum, expo, 1);	268	json_atof_scan1 (s, accum, expo, 1, maxdepth);
212	}	269	}
213	else if ((dig \| ' ') == 'e' - '0')	270	else if ((dig \| ' ') == 'e' - '0')
214	{	271	{
215	int exp2 = 0;	272	int exp2 = 0;
216	int neg = 0;	273	int neg = 0;
…		…
242	// if we have too many digits, then recurse for more	299	// if we have too many digits, then recurse for more
243	// we actually do this for rather few digits	300	// we actually do this for rather few digits
244	if (uaccum >= (UV_MAX - 9) / 10)	301	if (uaccum >= (UV_MAX - 9) / 10)
245	{	302	{
246	if (postdp) *expo -= eaccum;	303	if (postdp) *expo -= eaccum;
247	json_atof_scan1 (s, accum, expo, postdp);	304	json_atof_scan1 (s, accum, expo, postdp, maxdepth);
248	if (postdp) *expo += eaccum;	305	if (postdp) *expo += eaccum;
249		306
250	break;	307	break;
251	}	308	}
252	}	309	}
253		310
254	// this relies greatly on the quality of the pow ()	311	// this relies greatly on the quality of the pow ()
255	// implementation of the platform, but a good	312	// implementation of the platform, but a good
256	// implementation is hard to beat.	313	// implementation is hard to beat.
		314	// (IEEE 754 conformant ones are required to be exact)
257	if (postdp) *expo -= eaccum;	315	if (postdp) *expo -= eaccum;
258	accum += uaccum Perl_pow (10., *expo);	316	accum += uaccum Perl_pow (10., *expo);
259	*expo += eaccum;	317	*expo += eaccum;
260	}	318	}
261		319
…		…
270	{	328	{
271	++s;	329	++s;
272	neg = 1;	330	neg = 1;
273	}	331	}
274		332
		333	// a recursion depth of ten gives us >>500 bits
275	json_atof_scan1 (s, &accum, &expo, 0);	334	json_atof_scan1 (s, &accum, &expo, 0, 10);
276		335
277	return neg ? -accum : accum;	336	return neg ? -accum : accum;
278	}	337	}
		338
		339	// target of scalar reference is bool? -1 == nope, 0 == false, 1 == true
		340	static int
		341	ref_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
		361	static int
		362	json_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
279	/////////////////////////////////////////////////////////////////////////////	381	/////////////////////////////////////////////////////////////////////////////
280	// encoder	382	// encoder
281		383
282	// structure used for encoding JSON	384	// structure used for encoding JSON
283	typedef struct	385	typedef struct
…		…
291	} enc_t;	393	} enc_t;
292		394
293	INLINE void	395	INLINE void
294	need (enc_t *enc, STRLEN len)	396	need (enc_t *enc, STRLEN len)
295	{	397	{
296	if (expect_false (enc->cur + len >= enc->end))	398	if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
297	{	399	{
298	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	400	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
299	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	401	char *buf = json_sv_grow (enc->sv, cur, len);
300	enc->cur = SvPVX (enc->sv) + cur;	402	enc->cur = buf + cur;
301	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	403	enc->end = buf + SvLEN (enc->sv) - 1;
302	}	404	}
303	}	405	}
304		406
305	INLINE void	407	INLINE void
306	encode_ch (enc_t *enc, char ch)	408	encode_ch (enc_t *enc, char ch)
…		…
322		424
323	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case	425	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
324	{	426	{
325	if (expect_false (ch == '"')) // but with slow exceptions	427	if (expect_false (ch == '"')) // but with slow exceptions
326	{	428	{
327	need (enc, len += 1);	429	need (enc, len + 1);
328	*enc->cur++ = '\\';	430	*enc->cur++ = '\\';
329	*enc->cur++ = '"';	431	*enc->cur++ = '"';
330	}	432	}
331	else if (expect_false (ch == '\\'))	433	else if (expect_false (ch == '\\'))
332	{	434	{
333	need (enc, len += 1);	435	need (enc, len + 1);
334	*enc->cur++ = '\\';	436	*enc->cur++ = '\\';
335	*enc->cur++ = '\\';	437	*enc->cur++ = '\\';
336	}	438	}
337	else	439	else
338	*enc->cur++ = ch;	440	*enc->cur++ = ch;
…		…
341	}	443	}
342	else	444	else
343	{	445	{
344	switch (ch)	446	switch (ch)
345	{	447	{
346	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;
347	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;
348	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;
349	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;
350	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;
351		453
352	default:	454	default:
353	{	455	{
354	STRLEN clen;	456	STRLEN clen;
355	UV uch;	457	UV uch;
…		…
371	if (uch >= 0x10000UL)	473	if (uch >= 0x10000UL)
372	{	474	{
373	if (uch >= 0x110000UL)	475	if (uch >= 0x110000UL)
374	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);
375		477
376	need (enc, len += 11);	478	need (enc, len + 11);
377	sprintf (enc->cur, "\\u%04x\\u%04x",	479	sprintf (enc->cur, "\\u%04x\\u%04x",
378	(int)((uch - 0x10000) / 0x400 + 0xD800),	480	(int)((uch - 0x10000) / 0x400 + 0xD800),
379	(int)((uch - 0x10000) % 0x400 + 0xDC00));	481	(int)((uch - 0x10000) % 0x400 + 0xDC00));
380	enc->cur += 12;	482	enc->cur += 12;
381	}	483	}
382	else	484	else
383	{	485	{
384	need (enc, len += 5);	486	need (enc, len + 5);
385	*enc->cur++ = '\\';	487	*enc->cur++ = '\\';
386	*enc->cur++ = 'u';	488	*enc->cur++ = 'u';
387	*enc->cur++ = PL_hexdigit [ uch >> 12 ];	489	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
388	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];	490	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
389	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];	491	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
…		…
397	*enc->cur++ = uch;	499	*enc->cur++ = uch;
398	str += clen;	500	str += clen;
399	}	501	}
400	else if (is_utf8)	502	else if (is_utf8)
401	{	503	{
402	need (enc, len += clen);	504	need (enc, len + clen);
403	do	505	do
404	{	506	{
405	enc->cur++ = str++;	507	enc->cur++ = str++;
406	}	508	}
407	while (--clen);	509	while (--clen);
408	}	510	}
409	else	511	else
410	{	512	{
411	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
412	enc->cur = encode_utf8 (enc->cur, uch);	514	enc->cur = encode_utf8 (enc->cur, uch);
413	++str;	515	++str;
414	}	516	}
415	}	517	}
416	}	518	}
…		…
470		572
471	if (enc->indent >= enc->json.max_depth)	573	if (enc->indent >= enc->json.max_depth)
472	croak (ERR_NESTING_EXCEEDED);	574	croak (ERR_NESTING_EXCEEDED);
473		575
474	encode_ch (enc, '[');	576	encode_ch (enc, '[');
475		577
476	if (len >= 0)	578	if (len >= 0)
477	{	579	{
478	encode_nl (enc); ++enc->indent;	580	encode_nl (enc); ++enc->indent;
479		581
480	for (i = 0; i <= len; ++i)	582	for (i = 0; i <= len; ++i)
…		…
492	encode_comma (enc);	594	encode_comma (enc);
493	}	595	}
494		596
495	encode_nl (enc); --enc->indent; encode_indent (enc);	597	encode_nl (enc); --enc->indent; encode_indent (enc);
496	}	598	}
497		599
498	encode_ch (enc, ']');	600	encode_ch (enc, ']');
499	}	601	}
500		602
501	static void	603	static void
502	encode_hk (enc_t enc, HE he)	604	encode_hk (enc_t enc, HE he)
…		…
506	if (HeKLEN (he) == HEf_SVKEY)	608	if (HeKLEN (he) == HEf_SVKEY)
507	{	609	{
508	SV *sv = HeSVKEY (he);	610	SV *sv = HeSVKEY (he);
509	STRLEN len;	611	STRLEN len;
510	char *str;	612	char *str;
511		613
512	SvGETMAGIC (sv);	614	SvGETMAGIC (sv);
513	str = SvPV (sv, len);	615	str = SvPV (sv, len);
514		616
515	encode_str (enc, str, len, SvUTF8 (sv));	617	encode_str (enc, str, len, SvUTF8 (sv));
516	}	618	}
…		…
582	}	684	}
583		685
584	if (count)	686	if (count)
585	{	687	{
586	int i, fast = 1;	688	int i, fast = 1;
587	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	689	HE *hes_stack [STACK_HES];
588	HE *hes = _alloca (count sizeof (HE));	690	HE **hes = hes_stack;
589	#else	691
590	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	692	// allocate larger arrays on the heap
591	#endif	693	if (count > STACK_HES)
		694	{
		695	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		696	hes = (HE **)SvPVX (sv);
		697	}
592		698
593	i = 0;	699	i = 0;
594	while ((he = hv_iternext (hv)))	700	while ((he = hv_iternext (hv)))
595	{	701	{
596	hes [i++] = he;	702	hes [i++] = he;
…		…
665	// encode objects, arrays and special \0=false and \1=true values.	771	// encode objects, arrays and special \0=false and \1=true values.
666	static void	772	static void
667	encode_rv (enc_t enc, SV sv)	773	encode_rv (enc_t enc, SV sv)
668	{	774	{
669	svtype svt;	775	svtype svt;
		776	GV *method;
670		777
671	SvGETMAGIC (sv);	778	SvGETMAGIC (sv);
672	svt = SvTYPE (sv);	779	svt = SvTYPE (sv);
673		780
674	if (expect_false (SvOBJECT (sv)))	781	if (expect_false (SvOBJECT (sv)))
675	{	782	{
676	HV *stash = !JSON_SLOW \|\| json_boolean_stash	783	HV *stash = SvSTASH (sv);
677	? json_boolean_stash
678	: gv_stashpv ("JSON::XS::Boolean", 1);
679		784
680	if (SvSTASH (sv) == stash)	785	if (stash == bool_stash)
681	{	786	{
682	if (SvIV (sv))
683	encode_str (enc, "true", 4, 0);	787	if (SvIV (sv)) encode_str (enc, "true" , 4, 0);
684	else
685	encode_str (enc, "false", 5, 0);	788	else encode_str (enc, "false", 5, 0);
686	}	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);
687	else	862	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",	863	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))));	864	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
734	}
735	}	865	}
736	else if (svt == SVt_PVHV)	866	else if (svt == SVt_PVHV)
737	encode_hv (enc, (HV *)sv);	867	encode_hv (enc, (HV *)sv);
738	else if (svt == SVt_PVAV)	868	else if (svt == SVt_PVAV)
739	encode_av (enc, (AV *)sv);	869	encode_av (enc, (AV *)sv);
740	else if (svt < SVt_PVAV)	870	else if (svt < SVt_PVAV)
741	{	871	{
742	STRLEN len = 0;	872	int bool_type = ref_bool_type (sv);
743	char *pv = svt ? SvPV (sv, len) : 0;
744		873
745	if (len == 1 && *pv == '1')	874	if (bool_type == 1)
746	encode_str (enc, "true", 4, 0);	875	encode_str (enc, "true", 4, 0);
747	else if (len == 1 && *pv == '0')	876	else if (bool_type == 0)
748	encode_str (enc, "false", 5, 0);	877	encode_str (enc, "false", 5, 0);
749	else if (enc->json.flags & F_ALLOW_UNKNOWN)	878	else if (enc->json.flags & F_ALLOW_UNKNOWN)
750	encode_str (enc, "null", 4, 0);	879	encode_str (enc, "null", 4, 0);
751	else	880	else
752	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",
…		…
815	}	944	}
816	else	945	else
817	{	946	{
818	// large integer, use the (rather slow) snprintf way.	947	// large integer, use the (rather slow) snprintf way.
819	need (enc, IVUV_MAXCHARS);	948	need (enc, IVUV_MAXCHARS);
820	enc->cur +=	949	enc->cur +=
821	SvIsUV(sv)	950	SvIsUV(sv)
822	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	951	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
823	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	952	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
824	}	953	}
825	}	954	}
826	else if (SvROK (sv))	955	else if (SvROK (sv))
827	encode_rv (enc, SvRV (sv));	956	encode_rv (enc, SvRV (sv));
828	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)	957	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
829	encode_str (enc, "null", 4, 0);	958	encode_str (enc, "null", 4, 0);
830	else	959	else
831	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	960	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
832	SvPV_nolen (sv), SvFLAGS (sv));	961	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
833	}	962	}
834		963
835	static SV *	964	static SV *
836	encode_json (SV scalar, JSON json)	965	encode_json (SV scalar, JSON json)
837	{	966	{
838	enc_t enc;	967	enc_t enc;
839		968
840	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	969	if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
841	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)");
842		971
843	enc.json = *json;	972	enc.json = *json;
844	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	973	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
845	enc.cur = SvPVX (enc.sv);	974	enc.cur = SvPVX (enc.sv);
…		…
1052	cur++ = dec_cur++;	1181	cur++ = dec_cur++;
1053	while (--clen);	1182	while (--clen);
1054		1183
1055	utf8 = 1;	1184	utf8 = 1;
1056	}	1185	}
		1186	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1187	*cur++ = ch;
1057	else	1188	else
1058	{	1189	{
1059	--dec_cur;	1190	--dec_cur;
1060		1191
1061	if (!ch)	1192	if (!ch)
…		…
1071		1202
1072	if (sv)	1203	if (sv)
1073	{	1204	{
1074	STRLEN cur = SvCUR (sv);	1205	STRLEN cur = SvCUR (sv);
1075		1206
1076	if (SvLEN (sv) <= cur + len)	1207	if (SvLEN (sv) - cur <= len)
1077	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	1208	json_sv_grow (sv, cur, len);
1078		1209
1079	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1210	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
1080	SvCUR_set (sv, SvCUR (sv) + len);	1211	SvCUR_set (sv, SvCUR (sv) + len);
1081	}	1212	}
1082	else	1213	else
…		…
1249	if (*dec->cur == ']')	1380	if (*dec->cur == ']')
1250	{	1381	{
1251	++dec->cur;	1382	++dec->cur;
1252	break;	1383	break;
1253	}	1384	}
1254		1385
1255	if (*dec->cur != ',')	1386	if (*dec->cur != ',')
1256	ERR (", or ] expected while parsing array");	1387	ERR (", or ] expected while parsing array");
1257		1388
1258	++dec->cur;	1389	++dec->cur;
1259		1390
…		…
1373		1504
1374	DEC_DEC_DEPTH;	1505	DEC_DEC_DEPTH;
1375	sv = newRV_noinc ((SV *)hv);	1506	sv = newRV_noinc ((SV *)hv);
1376		1507
1377	// check filter callbacks	1508	// check filter callbacks
1378	if (dec->json.flags & F_HOOK)	1509	if (expect_false (dec->json.flags & F_HOOK))
1379	{	1510	{
1380	if (dec->json.cb_sk_object && HvKEYS (hv) == 1)	1511	if (dec->json.cb_sk_object && HvKEYS (hv) == 1)
1381	{	1512	{
1382	HE cb, he;	1513	HE cb, he;
1383		1514
1384	hv_iterinit (hv);	1515	hv_iterinit (hv);
1385	he = hv_iternext (hv);	1516	he = hv_iternext (hv);
1386	hv_iterinit (hv);	1517	hv_iterinit (hv);
1387		1518
1388	// the next line creates a mortal sv each time its called.	1519	// the next line creates a mortal sv each time it's called.
1389	// might want to optimise this for common cases.	1520	// might want to optimise this for common cases.
1390	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);
1391		1522
1392	if (cb)	1523	if (cb)
1393	{	1524	{
1394	dSP;	1525	dSP;
1395	int count;	1526	int count;
1396		1527
1397	ENTER; SAVETMPS; PUSHMARK (SP);	1528	ENTER; SAVETMPS;
		1529	PUSHMARK (SP);
1398	XPUSHs (HeVAL (he));	1530	XPUSHs (HeVAL (he));
		1531	sv_2mortal (sv);
1399		1532
1400	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1533	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1401		1534
1402	if (count == 1)	1535	if (count == 1)
1403	{	1536	{
1404	sv = newSVsv (POPs);	1537	sv = newSVsv (POPs);
1405	FREETMPS; LEAVE;	1538	FREETMPS; LEAVE;
1406	return sv;	1539	return sv;
1407	}	1540	}
		1541	else if (count)
		1542	croak ("filter_json_single_key_object callbacks must not return more than one scalar");
1408		1543
		1544	SvREFCNT_inc (sv);
1409	FREETMPS; LEAVE;	1545	FREETMPS; LEAVE;
1410	}	1546	}
1411	}	1547	}
1412		1548
1413	if (dec->json.cb_object)	1549	if (dec->json.cb_object)
1414	{	1550	{
1415	dSP;	1551	dSP;
1416	int count;	1552	int count;
1417		1553
1418	ENTER; SAVETMPS; PUSHMARK (SP);	1554	ENTER; SAVETMPS;
		1555	PUSHMARK (SP);
1419	XPUSHs (sv_2mortal (sv));	1556	XPUSHs (sv_2mortal (sv));
1420		1557
1421	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1558	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1422		1559
1423	if (count == 1)	1560	if (count == 1)
1424	{
1425	sv = newSVsv (POPs);	1561	sv = newSVsv (POPs);
1426	FREETMPS; LEAVE;	1562	else if (count == 0)
1427	return sv;
1428	}
1429
1430	SvREFCNT_inc (sv);	1563	SvREFCNT_inc (sv);
		1564	else
		1565	croak ("filter_json_object callbacks must not return more than one scalar");
		1566
1431	FREETMPS; LEAVE;	1567	FREETMPS; LEAVE;
1432	}	1568	}
1433	}	1569	}
1434		1570
1435	return sv;	1571	return sv;
…		…
1439	DEC_DEC_DEPTH;	1575	DEC_DEC_DEPTH;
1440	return 0;	1576	return 0;
1441	}	1577	}
1442		1578
1443	static SV *	1579	static SV *
		1580	decode_tag (dec_t *dec)
		1581	{
		1582	SV *tag = 0;
		1583	SV *val = 0;
		1584
		1585	if (!(dec->json.flags & F_ALLOW_TAGS))
		1586	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1587
		1588	++dec->cur;
		1589
		1590	decode_ws (dec);
		1591
		1592	tag = decode_sv (dec);
		1593	if (!tag)
		1594	goto fail;
		1595
		1596	if (!SvPOK (tag))
		1597	ERR ("malformed JSON string, (tag) must be a string");
		1598
		1599	decode_ws (dec);
		1600
		1601	if (*dec->cur != ')')
		1602	ERR (") expected after tag");
		1603
		1604	++dec->cur;
		1605
		1606	decode_ws (dec);
		1607
		1608	val = decode_sv (dec);
		1609	if (!val)
		1610	goto fail;
		1611
		1612	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1613	ERR ("malformed JSON string, tag value must be an array");
		1614
		1615	{
		1616	AV av = (AV )SvRV (val);
		1617	int i, len = av_len (av) + 1;
		1618	HV *stash = gv_stashsv (tag, 0);
		1619	SV *sv;
		1620
		1621	if (!stash)
		1622	ERR ("cannot decode perl-object (package does not exist)");
		1623
		1624	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1625
		1626	if (!method)
		1627	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1628
		1629	dSP;
		1630
		1631	ENTER; SAVETMPS;
		1632	PUSHMARK (SP);
		1633	EXTEND (SP, len + 2);
		1634	// we re-bless the reference to get overload and other niceties right
		1635	PUSHs (tag);
		1636	PUSHs (sv_json);
		1637
		1638	for (i = 0; i < len; ++i)
		1639	PUSHs (*av_fetch (av, i, 1));
		1640
		1641	PUTBACK;
		1642	call_sv ((SV *)GvCV (method), G_SCALAR);
		1643	SPAGAIN;
		1644
		1645	SvREFCNT_dec (tag);
		1646	SvREFCNT_dec (val);
		1647	sv = SvREFCNT_inc (POPs);
		1648
		1649	PUTBACK;
		1650
		1651	FREETMPS; LEAVE;
		1652
		1653	return sv;
		1654	}
		1655
		1656	fail:
		1657	SvREFCNT_dec (tag);
		1658	SvREFCNT_dec (val);
		1659	return 0;
		1660	}
		1661
		1662	static SV *
1444	decode_sv (dec_t *dec)	1663	decode_sv (dec_t *dec)
1445	{	1664	{
1446	// the beauty of JSON: you need exactly one character lookahead	1665	// the beauty of JSON: you need exactly one character lookahead
1447	// to parse everything.	1666	// to parse everything.
1448	switch (*dec->cur)	1667	switch (*dec->cur)
1449	{	1668	{
1450	case '"': ++dec->cur; return decode_str (dec);	1669	case '"': ++dec->cur; return decode_str (dec);
1451	case '[': ++dec->cur; return decode_av (dec);	1670	case '[': ++dec->cur; return decode_av (dec);
1452	case '{': ++dec->cur; return decode_hv (dec);	1671	case '{': ++dec->cur; return decode_hv (dec);
		1672	case '(': return decode_tag (dec);
1453		1673
1454	case '-':	1674	case '-':
1455	case '0': case '1': case '2': case '3': case '4':	1675	case '0': case '1': case '2': case '3': case '4':
1456	case '5': case '6': case '7': case '8': case '9':	1676	case '5': case '6': case '7': case '8': case '9':
1457	return decode_num (dec);	1677	return decode_num (dec);
1458		1678
		1679	case 'f':
		1680	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
		1681	{
		1682	dec->cur += 5;
		1683
		1684	if (expect_false (!dec->json.v_false))
		1685	dec->json.v_false = GET_BOOL (false);
		1686
		1687	return newSVsv (dec->json.v_false);
		1688	}
		1689	else
		1690	ERR ("'false' expected");
		1691
		1692	break;
		1693
1459	case 't':	1694	case 't':
1460	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1695	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1461	{	1696	{
1462	dec->cur += 4;	1697	dec->cur += 4;
1463	#if JSON_SLOW	1698
1464	json_true = get_bool ("JSON::XS::true");	1699	if (expect_false (!dec->json.v_true))
1465	#endif	1700	dec->json.v_true = GET_BOOL (true);
		1701
1466	return newSVsv (json_true);	1702	return newSVsv (dec->json.v_true);
1467	}	1703	}
1468	else	1704	else
1469	ERR ("'true' expected");	1705	ERR ("'true' expected");
1470
1471	break;
1472
1473	case 'f':
1474	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1475	{
1476	dec->cur += 5;
1477	#if JSON_SLOW
1478	json_false = get_bool ("JSON::XS::false");
1479	#endif
1480	return newSVsv (json_false);
1481	}
1482	else
1483	ERR ("'false' expected");
1484		1706
1485	break;	1707	break;
1486		1708
1487	case 'n':	1709	case 'n':
1488	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	1710	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
…		…
1494	ERR ("'null' expected");	1716	ERR ("'null' expected");
1495		1717
1496	break;	1718	break;
1497		1719
1498	default:	1720	default:
1499	ERR ("malformed JSON string, neither array, object, number, string or atom");	1721	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1500	break;	1722	break;
1501	}	1723	}
1502		1724
1503	fail:	1725	fail:
1504	return 0;	1726	return 0;
1505	}	1727	}
1506		1728
1507	static SV *	1729	static SV *
1508	decode_json (SV string, JSON json, char **offset_return)	1730	decode_json (SV string, JSON json, STRLEN *offset_return)
1509	{	1731	{
1510	dec_t dec;	1732	dec_t dec;
1511	SV *sv;	1733	SV *sv;
1512		1734
1513	/* work around bugs in 5.10 where manipulating magic values	1735	/* work around bugs in 5.10 where manipulating magic values
1514	* will perl ignore the magic in subsequent accesses	1736	* makes perl ignore the magic in subsequent accesses.
		1737	* also make a copy of non-PV values, to get them into a clean
		1738	* state (SvPV should do that, but it's buggy, see below).
		1739	*
		1740	* SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
		1741	* as reported by Reini Urban.
1515	*/	1742	*/
1516	/SvGETMAGIC (string);/	1743	/SvGETMAGIC (string);/
1517	if (SvMAGICAL (string))	1744	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
1518	string = sv_2mortal (newSVsv (string));	1745	string = sv_2mortal (newSVsv (string));
1519		1746
1520	SvUPGRADE (string, SVt_PV);	1747	SvUPGRADE (string, SVt_PV);
1521		1748
1522	/* work around a bug in perl 5.10, which causes SvCUR to fail an	1749	/* work around a bug in perl 5.10, which causes SvCUR to fail an
…		…
1539	if (offset > json->max_size && json->max_size)	1766	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",	1767	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);	1768	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
1542	}	1769	}
1543		1770
1544	if (json->flags & F_UTF8)	1771	if (DECODE_WANTS_OCTETS (json))
1545	sv_utf8_downgrade (string, 0);	1772	sv_utf8_downgrade (string, 0);
1546	else	1773	else
1547	sv_utf8_upgrade (string);	1774	sv_utf8_upgrade (string);
1548		1775
1549	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1776	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
…		…
1561		1788
1562	decode_ws (&dec);	1789	decode_ws (&dec);
1563	sv = decode_sv (&dec);	1790	sv = decode_sv (&dec);
1564		1791
1565	if (offset_return)	1792	if (offset_return)
1566	*offset_return = dec.cur;	1793	*offset_return = dec.cur - SvPVX (string);
1567		1794	else if (sv)
1568	if (!(offset_return \|\| !sv))
1569	{	1795	{
1570	// check for trailing garbage	1796	// check for trailing garbage
1571	decode_ws (&dec);	1797	decode_ws (&dec);
1572		1798
1573	if (*dec.cur)	1799	if (dec.cur != dec.end)
1574	{	1800	{
1575	dec.err = "garbage after JSON object";	1801	dec.err = "garbage after JSON object";
1576	SvREFCNT_dec (sv);	1802	SvREFCNT_dec (sv);
1577	sv = 0;	1803	sv = 0;
1578	}	1804	}
…		…
1591	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1817	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1592	LEAVE;	1818	LEAVE;
1593		1819
1594	croak ("%s, at character offset %d (before \"%s\")",	1820	croak ("%s, at character offset %d (before \"%s\")",
1595	dec.err,	1821	dec.err,
1596	ptr_to_index (string, dec.cur),	1822	(int)ptr_to_index (string, dec.cur),
1597	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1823	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1598	}	1824	}
1599		1825
1600	sv = sv_2mortal (sv);	1826	sv = sv_2mortal (sv);
1601		1827
1602	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1828	if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1603	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1829	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1604		1830
1605	return sv;	1831	return sv;
1606	}	1832	}
1607		1833
…		…
1616	// the state machine here is a bit convoluted and could be simplified a lot	1842	// the state machine here is a bit convoluted and could be simplified a lot
1617	// but this would make it slower, so...	1843	// but this would make it slower, so...
1618		1844
1619	for (;;)	1845	for (;;)
1620	{	1846	{
1621	//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
1622	switch (self->incr_mode)	1847	switch (self->incr_mode)
1623	{	1848	{
		1849	// reached end of a scalar, see if we are inside a nested structure or not
		1850	end_of_scalar:
		1851	self->incr_mode = INCR_M_JSON;
		1852
		1853	if (self->incr_nest) // end of a scalar inside array, object or tag
		1854	goto incr_m_json;
		1855	else // end of scalar outside structure, json text ends here
		1856	goto interrupt;
		1857
1624	// only used for initial whitespace skipping	1858	// only used for initial whitespace skipping
1625	case INCR_M_WS:	1859	case INCR_M_WS:
1626	for (;;)	1860	for (;;)
1627	{	1861	{
1628	if (*p > 0x20)	1862	if (*p > 0x20)
…		…
1670	++p;	1904	++p;
1671	}	1905	}
1672		1906
1673	break;	1907	break;
1674		1908
		1909	// inside true/false/null
		1910	case INCR_M_TFN:
		1911	incr_m_tfn:
		1912	for (;;)
		1913	switch (*p++)
		1914	{
		1915	case 'r': case 'u': case 'e': // tRUE, falsE, nUll
		1916	case 'a': case 'l': case 's': // fALSe, nuLL
		1917	// allowed
		1918	break;
		1919
		1920	default:
		1921	--p;
		1922	goto end_of_scalar;
		1923	}
		1924
		1925	// inside a number
		1926	case INCR_M_NUM:
		1927	incr_m_num:
		1928	for (;;)
		1929	switch (*p++)
		1930	{
		1931	case 'e': case 'E': case '.': case '+':
		1932	case '-':
		1933	case '0': case '1': case '2': case '3': case '4':
		1934	case '5': case '6': case '7': case '8': case '9':
		1935	// allowed
		1936	break;
		1937
		1938	default:
		1939	--p;
		1940	goto end_of_scalar;
		1941	}
		1942
1675	// inside a string	1943	// inside a string
1676	case INCR_M_STR:	1944	case INCR_M_STR:
1677	incr_m_str:	1945	incr_m_str:
1678	for (;;)	1946	for (;;)
1679	{	1947	{
1680	if (*p == '"')	1948	if (*p == '"')
1681	{	1949	{
1682	++p;	1950	++p;
1683	self->incr_mode = INCR_M_JSON;
1684
1685	if (!self->incr_nest)
1686	goto interrupt;
1687
1688	goto incr_m_json;	1951	goto end_of_scalar;
1689	}	1952	}
1690	else if (*p == '\\')	1953	else if (*p == '\\')
1691	{	1954	{
1692	++p; // "virtually" consumes character after \	1955	++p; // "virtually" consumes character after \
1693		1956
…		…
1723	--p; // do not eat the whitespace, let the next round do it	1986	--p; // do not eat the whitespace, let the next round do it
1724	goto interrupt;	1987	goto interrupt;
1725	}	1988	}
1726	break;	1989	break;
1727		1990
		1991	// the following three blocks handle scalars. this makes the parser
		1992	// more strict than required inside arrays or objects, and could
		1993	// be moved to a special case on the toplevel (except strings)
		1994	case 't':
		1995	case 'f':
		1996	case 'n':
		1997	self->incr_mode = INCR_M_TFN;
		1998	goto incr_m_tfn;
		1999
		2000	case '-':
		2001	case '0': case '1': case '2': case '3': case '4':
		2002	case '5': case '6': case '7': case '8': case '9':
		2003	self->incr_mode = INCR_M_NUM;
		2004	goto incr_m_num;
		2005
1728	case '"':	2006	case '"':
1729	self->incr_mode = INCR_M_STR;	2007	self->incr_mode = INCR_M_STR;
1730	goto incr_m_str;	2008	goto incr_m_str;
1731		2009
1732	case '[':	2010	case '[':
1733	case '{':	2011	case '{':
		2012	case '(':
1734	if (++self->incr_nest > self->max_depth)	2013	if (++self->incr_nest > self->max_depth)
1735	croak (ERR_NESTING_EXCEEDED);	2014	croak (ERR_NESTING_EXCEEDED);
1736	break;	2015	break;
1737		2016
1738	case ']':	2017	case ']':
1739	case '}':	2018	case '}':
1740	if (--self->incr_nest <= 0)	2019	if (--self->incr_nest <= 0)
1741	goto interrupt;	2020	goto interrupt;
		2021	break;
		2022
		2023	case ')':
		2024	--self->incr_nest;
1742	break;	2025	break;
1743		2026
1744	case '#':	2027	case '#':
1745	self->incr_mode = INCR_M_C1;	2028	self->incr_mode = INCR_M_C1;
1746	goto incr_m_c;	2029	goto incr_m_c;
…		…
1772	i >= '0' && i <= '9' ? i - '0'	2055	i >= '0' && i <= '9' ? i - '0'
1773	: i >= 'a' && i <= 'f' ? i - 'a' + 10	2056	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1774	: i >= 'A' && i <= 'F' ? i - 'A' + 10	2057	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1775	: -1;	2058	: -1;
1776		2059
1777	json_stash = gv_stashpv ("JSON::XS" , 1);	2060	json_stash = gv_stashpv ("JSON::XS" , 1);
1778	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	2061	bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1779
1780	json_true = get_bool ("JSON::XS::true");
1781	json_false = get_bool ("JSON::XS::false");	2062	bool_false = get_bool ("Types::Serialiser::false");
		2063	bool_true = get_bool ("Types::Serialiser::true");
		2064
		2065	sv_json = newSVpv ("JSON", 0);
		2066	SvREADONLY_on (sv_json);
1782		2067
1783	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */	2068	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1784	}	2069	}
1785		2070
1786	PROTOTYPES: DISABLE	2071	PROTOTYPES: DISABLE
1787		2072
1788	void CLONE (...)	2073	void CLONE (...)
1789	CODE:	2074	CODE:
		2075	// as long as these writes are atomic, the race should not matter
		2076	// as existing threads either already use 0, or use the old value,
		2077	// which is sitll correct for the initial thread.
1790	json_stash = 0;	2078	json_stash = 0;
1791	json_boolean_stash = 0;	2079	bool_stash = 0;
		2080	bool_false = 0;
		2081	bool_true = 0;
1792		2082
1793	void new (char *klass)	2083	void new (char *klass)
1794	PPCODE:	2084	PPCODE:
1795	{	2085	{
1796	SV *pv = NEWSV (0, sizeof (JSON));	2086	SV *pv = NEWSV (0, sizeof (JSON));
1797	SvPOK_only (pv);	2087	SvPOK_only (pv);
1798	json_init ((JSON *)SvPVX (pv));	2088	json_init ((JSON *)SvPVX (pv));
1799	XPUSHs (sv_2mortal (sv_bless (	2089	XPUSHs (sv_2mortal (sv_bless (
1800	newRV_noinc (pv),	2090	newRV_noinc (pv),
1801	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	2091	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1802	)));	2092	)));
1803	}	2093	}
		2094
		2095	void boolean_values (JSON self, SV v_false = 0, SV *v_true = 0)
		2096	PPCODE:
		2097	self->v_false = newSVsv (v_false);
		2098	self->v_true = newSVsv (v_true);
		2099	XPUSHs (ST (0));
		2100
		2101	void get_boolean_values (JSON *self)
		2102	PPCODE:
		2103	if (self->v_false && self->v_true)
		2104	{
		2105	EXTEND (SP, 2);
		2106	PUSHs (self->v_false);
		2107	PUSHs (self->v_true);
		2108	}
1804		2109
1805	void ascii (JSON *self, int enable = 1)	2110	void ascii (JSON *self, int enable = 1)
1806	ALIAS:	2111	ALIAS:
1807	ascii = F_ASCII	2112	ascii = F_ASCII
1808	latin1 = F_LATIN1	2113	latin1 = F_LATIN1
…		…
1816	shrink = F_SHRINK	2121	shrink = F_SHRINK
1817	allow_blessed = F_ALLOW_BLESSED	2122	allow_blessed = F_ALLOW_BLESSED
1818	convert_blessed = F_CONV_BLESSED	2123	convert_blessed = F_CONV_BLESSED
1819	relaxed = F_RELAXED	2124	relaxed = F_RELAXED
1820	allow_unknown = F_ALLOW_UNKNOWN	2125	allow_unknown = F_ALLOW_UNKNOWN
		2126	allow_tags = F_ALLOW_TAGS
1821	PPCODE:	2127	PPCODE:
1822	{	2128	{
1823	if (enable)	2129	if (enable)
1824	self->flags \|= ix;	2130	self->flags \|= ix;
1825	else	2131	else
…		…
1841	get_shrink = F_SHRINK	2147	get_shrink = F_SHRINK
1842	get_allow_blessed = F_ALLOW_BLESSED	2148	get_allow_blessed = F_ALLOW_BLESSED
1843	get_convert_blessed = F_CONV_BLESSED	2149	get_convert_blessed = F_CONV_BLESSED
1844	get_relaxed = F_RELAXED	2150	get_relaxed = F_RELAXED
1845	get_allow_unknown = F_ALLOW_UNKNOWN	2151	get_allow_unknown = F_ALLOW_UNKNOWN
		2152	get_allow_tags = F_ALLOW_TAGS
1846	PPCODE:	2153	PPCODE:
1847	XPUSHs (boolSV (self->flags & ix));	2154	XPUSHs (boolSV (self->flags & ix));
1848		2155
1849	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)	2156	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1850	PPCODE:	2157	PPCODE:
…		…
1878	}	2185	}
1879		2186
1880	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2187	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1881	PPCODE:	2188	PPCODE:
1882	{	2189	{
1883	if (!self->cb_sk_object)	2190	if (!self->cb_sk_object)
1884	self->cb_sk_object = newHV ();	2191	self->cb_sk_object = newHV ();
1885		2192
1886	if (SvOK (cb))	2193	if (SvOK (cb))
1887	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2194	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1888	else	2195	else
…		…
1899	XPUSHs (ST (0));	2206	XPUSHs (ST (0));
1900	}	2207	}
1901		2208
1902	void encode (JSON self, SV scalar)	2209	void encode (JSON self, SV scalar)
1903	PPCODE:	2210	PPCODE:
1904	XPUSHs (encode_json (scalar, self));	2211	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2212	XPUSHs (scalar);
1905		2213
1906	void decode (JSON self, SV jsonstr)	2214	void decode (JSON self, SV jsonstr)
1907	PPCODE:	2215	PPCODE:
1908	XPUSHs (decode_json (jsonstr, self, 0));	2216	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2217	XPUSHs (jsonstr);
1909		2218
1910	void decode_prefix (JSON self, SV jsonstr)	2219	void decode_prefix (JSON self, SV jsonstr)
1911	PPCODE:	2220	PPCODE:
1912	{	2221	{
1913	char *offset;	2222	SV *sv;
		2223	STRLEN offset;
		2224	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1914	EXTEND (SP, 2);	2225	EXTEND (SP, 2);
1915	PUSHs (decode_json (jsonstr, self, &offset));	2226	PUSHs (sv);
1916	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));	2227	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
1917	}	2228	}
1918		2229
1919	void incr_parse (JSON self, SV jsonstr = 0)	2230	void incr_parse (JSON self, SV jsonstr = 0)
1920	PPCODE:	2231	PPCODE:
1921	{	2232	{
1922	if (!self->incr_text)	2233	if (!self->incr_text)
1923	self->incr_text = newSVpvn ("", 0);	2234	self->incr_text = newSVpvn ("", 0);
		2235
		2236	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2237	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2238	if (DECODE_WANTS_OCTETS (self))
		2239	{
		2240	if (self->incr_pos)
		2241	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2242	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2243
		2244	sv_utf8_downgrade (self->incr_text, 0);
		2245	}
		2246	else
		2247	{
		2248	sv_utf8_upgrade (self->incr_text);
		2249
		2250	if (self->incr_pos)
		2251	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2252	- (U8 *)SvPVX (self->incr_text);
		2253	}
1924		2254
1925	// append data, if any	2255	// append data, if any
1926	if (jsonstr)	2256	if (jsonstr)
1927	{	2257	{
		2258	/* make sure both strings have same encoding */
		2259	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
1928	if (SvUTF8 (jsonstr))	2260	if (SvUTF8 (jsonstr))
		2261	sv_utf8_downgrade (jsonstr, 0);
1929	{	2262	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);	2263	sv_utf8_upgrade (jsonstr);
1942		2264
		2265	/* and then just blindly append */
1943	{	2266	{
1944	STRLEN len;	2267	STRLEN len;
1945	const char *str = SvPV (jsonstr, len);	2268	const char *str = SvPV (jsonstr, len);
1946	STRLEN cur = SvCUR (self->incr_text);	2269	STRLEN cur = SvCUR (self->incr_text);
1947		2270
1948	if (SvLEN (self->incr_text) <= cur + len)	2271	if (SvLEN (self->incr_text) - cur <= len)
1949	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	2272	json_sv_grow (self->incr_text, cur, len);
1950		2273
1951	Move (str, SvEND (self->incr_text), len, char);	2274	Move (str, SvEND (self->incr_text), len, char);
1952	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);	2275	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
1953	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there	2276	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1954	}	2277	}
1955	}	2278	}
1956		2279
1957	if (GIMME_V != G_VOID)	2280	if (GIMME_V != G_VOID)
1958	do	2281	do
1959	{	2282	{
		2283	SV *sv;
1960	char *offset;	2284	STRLEN offset;
1961		2285
1962	if (!INCR_DONE (self))	2286	if (!INCR_DONE (self))
1963	{	2287	{
1964	incr_parse (self);	2288	incr_parse (self);
1965		2289
1966	if (self->incr_pos > self->max_size && self->max_size)	2290	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",	2291	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);	2292	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
1969		2293
1970	if (!INCR_DONE (self))	2294	if (!INCR_DONE (self))
		2295	{
		2296	// as an optimisation, do not accumulate white space in the incr buffer
		2297	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2298	{
		2299	self->incr_pos = 0;
		2300	SvCUR_set (self->incr_text, 0);
		2301	}
		2302
1971	break;	2303	break;
		2304	}
1972	}	2305	}
1973		2306
1974	XPUSHs (decode_json (self->incr_text, self, &offset));	2307	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2308	XPUSHs (sv);
1975		2309
1976	self->incr_pos -= offset - SvPVX (self->incr_text);	2310	self->incr_pos -= offset;
1977	self->incr_nest = 0;	2311	self->incr_nest = 0;
1978	self->incr_mode = 0;	2312	self->incr_mode = 0;
1979		2313
1980	sv_chop (self->incr_text, offset);	2314	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
1981	}	2315	}
1982	while (GIMME_V == G_ARRAY);	2316	while (GIMME_V == G_ARRAY);
1983	}	2317	}
1984		2318
1985	SV incr_text (JSON self)	2319	SV incr_text (JSON self)
…		…
2016	self->incr_mode = 0;	2350	self->incr_mode = 0;
2017	}	2351	}
2018		2352
2019	void DESTROY (JSON *self)	2353	void DESTROY (JSON *self)
2020	CODE:	2354	CODE:
		2355	SvREFCNT_dec (self->v_false);
		2356	SvREFCNT_dec (self->v_true);
2021	SvREFCNT_dec (self->cb_sk_object);	2357	SvREFCNT_dec (self->cb_sk_object);
2022	SvREFCNT_dec (self->cb_object);	2358	SvREFCNT_dec (self->cb_object);
2023	SvREFCNT_dec (self->incr_text);	2359	SvREFCNT_dec (self->incr_text);
2024		2360
2025	PROTOTYPES: ENABLE	2361	PROTOTYPES: ENABLE
2026		2362
2027	void encode_json (SV *scalar)	2363	void encode_json (SV *scalar)
2028	ALIAS:
2029	to_json_ = 0
2030	encode_json = F_UTF8
2031	PPCODE:	2364	PPCODE:
2032	{	2365	{
2033	JSON json;	2366	JSON json;
2034	json_init (&json);	2367	json_init (&json);
2035	json.flags \|= ix;	2368	json.flags \|= F_UTF8;
2036	XPUSHs (encode_json (scalar, &json));	2369	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2370	XPUSHs (scalar);
2037	}	2371	}
2038		2372
2039	void decode_json (SV *jsonstr)	2373	void decode_json (SV *jsonstr)
2040	ALIAS:
2041	from_json_ = 0
2042	decode_json = F_UTF8
2043	PPCODE:	2374	PPCODE:
2044	{	2375	{
2045	JSON json;	2376	JSON json;
2046	json_init (&json);	2377	json_init (&json);
2047	json.flags \|= ix;	2378	json.flags \|= F_UTF8;
2048	XPUSHs (decode_json (jsonstr, &json, 0));	2379	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2380	XPUSHs (jsonstr);
2049	}	2381	}
2050		2382

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Comparing JSON-XS/XS.xs (file contents): Revision 1.105 by root, Tue Jan 19 01:07:27 2010 UTC vs. Revision 1.138 by root, Wed Mar 6 07:21:17 2019 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.105 by root, Tue Jan 19 01:07:27 2010 UTC vs.
Revision 1.138 by root, Wed Mar 6 07:21:17 2019 UTC