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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.104 by root, Tue Jan 19 00:31:13 2010 UTC vs.
Revision 1.136 by root, Thu Nov 15 22:35:35 2018 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
12	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	13	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
13	# define snprintf _snprintf // C compilers have this in stdio.h	14	# define snprintf _snprintf // C compilers have this in stdio.h
14	#endif	15	#endif
15		16
16	// some old perls do not have this, try to make it work, no	17	// some old perls do not have this, try to make it work, no
17	// guarantees, though. if it breaks, you get to keep the pieces.	18	// guarantees, though. if it breaks, you get to keep the pieces.
18	#ifndef UTF8_MAXBYTES	19	#ifndef UTF8_MAXBYTES
19	# define UTF8_MAXBYTES 13	20	# define UTF8_MAXBYTES 13
		21	#endif
		22
		23	// compatibility with perl <5.18
		24	#ifndef HvNAMELEN_get
		25	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		26	#endif
		27	#ifndef HvNAMELEN
		28	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		29	#endif
		30	#ifndef HvNAMEUTF8
		31	# define HvNAMEUTF8(hv) 0
20	#endif	32	#endif
21		33
22	// three extra for rounding, sign, and end of string	34	// three extra for rounding, sign, and end of string
23	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)	35	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)
24		36
…		…
33	#define F_SHRINK 0x00000200UL	45	#define F_SHRINK 0x00000200UL
34	#define F_ALLOW_BLESSED 0x00000400UL	46	#define F_ALLOW_BLESSED 0x00000400UL
35	#define F_CONV_BLESSED 0x00000800UL	47	#define F_CONV_BLESSED 0x00000800UL
36	#define F_RELAXED 0x00001000UL	48	#define F_RELAXED 0x00001000UL
37	#define F_ALLOW_UNKNOWN 0x00002000UL	49	#define F_ALLOW_UNKNOWN 0x00002000UL
		50	#define F_ALLOW_TAGS 0x00004000UL
38	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing	51	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
39		52
40	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	53	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
41		54
42	#define INIT_SIZE 32 // initial scalar size to be allocated	55	#define INIT_SIZE 64 // initial scalar size to be allocated
43	#define INDENT_STEP 3 // spaces per indentation level	56	#define INDENT_STEP 3 // spaces per indentation level
44		57
45	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size	58	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
		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
		311	// this relies greatly on the quality of the pow ()
		312	// implementation of the platform, but a good
		313	// implementation is hard to beat.
		314	// (IEEE 754 conformant ones are required to be exact)
254	if (postdp) *expo -= eaccum;	315	if (postdp) *expo -= eaccum;
255	accum += uaccum pow (10., *expo);	316	accum += uaccum Perl_pow (10., *expo);
256	*expo += eaccum;	317	*expo += eaccum;
257	}	318	}
258		319
259	static NV	320	static NV
260	json_atof (const char *s)	321	json_atof (const char *s)
…		…
267	{	328	{
268	++s;	329	++s;
269	neg = 1;	330	neg = 1;
270	}	331	}
271		332
		333	// a recursion depth of ten gives us >>500 bits
272	json_atof_scan1 (s, &accum, &expo, 0);	334	json_atof_scan1 (s, &accum, &expo, 0, 10);
273		335
274	return neg ? -accum : accum;	336	return neg ? -accum : accum;
275	}	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
276	/////////////////////////////////////////////////////////////////////////////	381	/////////////////////////////////////////////////////////////////////////////
277	// encoder	382	// encoder
278		383
279	// structure used for encoding JSON	384	// structure used for encoding JSON
280	typedef struct	385	typedef struct
…		…
288	} enc_t;	393	} enc_t;
289		394
290	INLINE void	395	INLINE void
291	need (enc_t *enc, STRLEN len)	396	need (enc_t *enc, STRLEN len)
292	{	397	{
293	if (expect_false (enc->cur + len >= enc->end))	398	if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
294	{	399	{
295	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	400	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
296	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	401	char *buf = json_sv_grow (enc->sv, cur, len);
297	enc->cur = SvPVX (enc->sv) + cur;	402	enc->cur = buf + cur;
298	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	403	enc->end = buf + SvLEN (enc->sv) - 1;
299	}	404	}
300	}	405	}
301		406
302	INLINE void	407	INLINE void
303	encode_ch (enc_t *enc, char ch)	408	encode_ch (enc_t *enc, char ch)
…		…
319		424
320	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case	425	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
321	{	426	{
322	if (expect_false (ch == '"')) // but with slow exceptions	427	if (expect_false (ch == '"')) // but with slow exceptions
323	{	428	{
324	need (enc, len += 1);	429	need (enc, len + 1);
325	*enc->cur++ = '\\';	430	*enc->cur++ = '\\';
326	*enc->cur++ = '"';	431	*enc->cur++ = '"';
327	}	432	}
328	else if (expect_false (ch == '\\'))	433	else if (expect_false (ch == '\\'))
329	{	434	{
330	need (enc, len += 1);	435	need (enc, len + 1);
331	*enc->cur++ = '\\';	436	*enc->cur++ = '\\';
332	*enc->cur++ = '\\';	437	*enc->cur++ = '\\';
333	}	438	}
334	else	439	else
335	*enc->cur++ = ch;	440	*enc->cur++ = ch;
…		…
338	}	443	}
339	else	444	else
340	{	445	{
341	switch (ch)	446	switch (ch)
342	{	447	{
343	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;
344	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;
345	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;
346	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;
347	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;
348		453
349	default:	454	default:
350	{	455	{
351	STRLEN clen;	456	STRLEN clen;
352	UV uch;	457	UV uch;
…		…
368	if (uch >= 0x10000UL)	473	if (uch >= 0x10000UL)
369	{	474	{
370	if (uch >= 0x110000UL)	475	if (uch >= 0x110000UL)
371	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);
372		477
373	need (enc, len += 11);	478	need (enc, len + 11);
374	sprintf (enc->cur, "\\u%04x\\u%04x",	479	sprintf (enc->cur, "\\u%04x\\u%04x",
375	(int)((uch - 0x10000) / 0x400 + 0xD800),	480	(int)((uch - 0x10000) / 0x400 + 0xD800),
376	(int)((uch - 0x10000) % 0x400 + 0xDC00));	481	(int)((uch - 0x10000) % 0x400 + 0xDC00));
377	enc->cur += 12;	482	enc->cur += 12;
378	}	483	}
379	else	484	else
380	{	485	{
381	need (enc, len += 5);	486	need (enc, len + 5);
382	*enc->cur++ = '\\';	487	*enc->cur++ = '\\';
383	*enc->cur++ = 'u';	488	*enc->cur++ = 'u';
384	*enc->cur++ = PL_hexdigit [ uch >> 12 ];	489	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
385	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];	490	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
386	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];	491	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
…		…
394	*enc->cur++ = uch;	499	*enc->cur++ = uch;
395	str += clen;	500	str += clen;
396	}	501	}
397	else if (is_utf8)	502	else if (is_utf8)
398	{	503	{
399	need (enc, len += clen);	504	need (enc, len + clen);
400	do	505	do
401	{	506	{
402	enc->cur++ = str++;	507	enc->cur++ = str++;
403	}	508	}
404	while (--clen);	509	while (--clen);
405	}	510	}
406	else	511	else
407	{	512	{
408	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
409	enc->cur = encode_utf8 (enc->cur, uch);	514	enc->cur = encode_utf8 (enc->cur, uch);
410	++str;	515	++str;
411	}	516	}
412	}	517	}
413	}	518	}
…		…
467		572
468	if (enc->indent >= enc->json.max_depth)	573	if (enc->indent >= enc->json.max_depth)
469	croak (ERR_NESTING_EXCEEDED);	574	croak (ERR_NESTING_EXCEEDED);
470		575
471	encode_ch (enc, '[');	576	encode_ch (enc, '[');
472		577
473	if (len >= 0)	578	if (len >= 0)
474	{	579	{
475	encode_nl (enc); ++enc->indent;	580	encode_nl (enc); ++enc->indent;
476		581
477	for (i = 0; i <= len; ++i)	582	for (i = 0; i <= len; ++i)
…		…
489	encode_comma (enc);	594	encode_comma (enc);
490	}	595	}
491		596
492	encode_nl (enc); --enc->indent; encode_indent (enc);	597	encode_nl (enc); --enc->indent; encode_indent (enc);
493	}	598	}
494		599
495	encode_ch (enc, ']');	600	encode_ch (enc, ']');
496	}	601	}
497		602
498	static void	603	static void
499	encode_hk (enc_t enc, HE he)	604	encode_hk (enc_t enc, HE he)
…		…
503	if (HeKLEN (he) == HEf_SVKEY)	608	if (HeKLEN (he) == HEf_SVKEY)
504	{	609	{
505	SV *sv = HeSVKEY (he);	610	SV *sv = HeSVKEY (he);
506	STRLEN len;	611	STRLEN len;
507	char *str;	612	char *str;
508		613
509	SvGETMAGIC (sv);	614	SvGETMAGIC (sv);
510	str = SvPV (sv, len);	615	str = SvPV (sv, len);
511		616
512	encode_str (enc, str, len, SvUTF8 (sv));	617	encode_str (enc, str, len, SvUTF8 (sv));
513	}	618	}
…		…
579	}	684	}
580		685
581	if (count)	686	if (count)
582	{	687	{
583	int i, fast = 1;	688	int i, fast = 1;
584	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	689	HE *hes_stack [STACK_HES];
585	HE *hes = _alloca (count sizeof (HE));	690	HE **hes = hes_stack;
586	#else	691
587	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	692	// allocate larger arrays on the heap
588	#endif	693	if (count > STACK_HES)
		694	{
		695	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		696	hes = (HE **)SvPVX (sv);
		697	}
589		698
590	i = 0;	699	i = 0;
591	while ((he = hv_iternext (hv)))	700	while ((he = hv_iternext (hv)))
592	{	701	{
593	hes [i++] = he;	702	hes [i++] = he;
…		…
662	// encode objects, arrays and special \0=false and \1=true values.	771	// encode objects, arrays and special \0=false and \1=true values.
663	static void	772	static void
664	encode_rv (enc_t enc, SV sv)	773	encode_rv (enc_t enc, SV sv)
665	{	774	{
666	svtype svt;	775	svtype svt;
		776	GV *method;
667		777
668	SvGETMAGIC (sv);	778	SvGETMAGIC (sv);
669	svt = SvTYPE (sv);	779	svt = SvTYPE (sv);
670		780
671	if (expect_false (SvOBJECT (sv)))	781	if (expect_false (SvOBJECT (sv)))
672	{	782	{
673	HV *stash = !JSON_SLOW \|\| json_boolean_stash	783	HV *stash = SvSTASH (sv);
674	? json_boolean_stash
675	: gv_stashpv ("JSON::XS::Boolean", 1);
676		784
677	if (SvSTASH (sv) == stash)	785	if (stash == bool_stash)
678	{	786	{
679	if (SvIV (sv))
680	encode_str (enc, "true", 4, 0);	787	if (SvIV (sv)) encode_str (enc, "true" , 4, 0);
681	else
682	encode_str (enc, "false", 5, 0);	788	else encode_str (enc, "false", 5, 0);
683	}	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);
684	else	862	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",	863	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))));	864	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
731	}
732	}	865	}
733	else if (svt == SVt_PVHV)	866	else if (svt == SVt_PVHV)
734	encode_hv (enc, (HV *)sv);	867	encode_hv (enc, (HV *)sv);
735	else if (svt == SVt_PVAV)	868	else if (svt == SVt_PVAV)
736	encode_av (enc, (AV *)sv);	869	encode_av (enc, (AV *)sv);
737	else if (svt < SVt_PVAV)	870	else if (svt < SVt_PVAV)
738	{	871	{
739	STRLEN len = 0;	872	int bool_type = ref_bool_type (sv);
740	char *pv = svt ? SvPV (sv, len) : 0;
741		873
742	if (len == 1 && *pv == '1')	874	if (bool_type == 1)
743	encode_str (enc, "true", 4, 0);	875	encode_str (enc, "true", 4, 0);
744	else if (len == 1 && *pv == '0')	876	else if (bool_type == 0)
745	encode_str (enc, "false", 5, 0);	877	encode_str (enc, "false", 5, 0);
746	else if (enc->json.flags & F_ALLOW_UNKNOWN)	878	else if (enc->json.flags & F_ALLOW_UNKNOWN)
747	encode_str (enc, "null", 4, 0);	879	encode_str (enc, "null", 4, 0);
748	else	880	else
749	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",
…		…
812	}	944	}
813	else	945	else
814	{	946	{
815	// large integer, use the (rather slow) snprintf way.	947	// large integer, use the (rather slow) snprintf way.
816	need (enc, IVUV_MAXCHARS);	948	need (enc, IVUV_MAXCHARS);
817	enc->cur +=	949	enc->cur +=
818	SvIsUV(sv)	950	SvIsUV(sv)
819	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	951	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
820	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	952	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
821	}	953	}
822	}	954	}
823	else if (SvROK (sv))	955	else if (SvROK (sv))
824	encode_rv (enc, SvRV (sv));	956	encode_rv (enc, SvRV (sv));
825	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)	957	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
826	encode_str (enc, "null", 4, 0);	958	encode_str (enc, "null", 4, 0);
827	else	959	else
828	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",
829	SvPV_nolen (sv), SvFLAGS (sv));	961	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
830	}	962	}
831		963
832	static SV *	964	static SV *
833	encode_json (SV scalar, JSON json)	965	encode_json (SV scalar, JSON json)
834	{	966	{
835	enc_t enc;	967	enc_t enc;
836		968
837	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	969	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)");	970	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
839		971
840	enc.json = *json;	972	enc.json = *json;
841	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	973	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
842	enc.cur = SvPVX (enc.sv);	974	enc.cur = SvPVX (enc.sv);
…		…
1049	cur++ = dec_cur++;	1181	cur++ = dec_cur++;
1050	while (--clen);	1182	while (--clen);
1051		1183
1052	utf8 = 1;	1184	utf8 = 1;
1053	}	1185	}
		1186	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1187	*cur++ = ch;
1054	else	1188	else
1055	{	1189	{
1056	--dec_cur;	1190	--dec_cur;
1057		1191
1058	if (!ch)	1192	if (!ch)
…		…
1068		1202
1069	if (sv)	1203	if (sv)
1070	{	1204	{
1071	STRLEN cur = SvCUR (sv);	1205	STRLEN cur = SvCUR (sv);
1072		1206
1073	if (SvLEN (sv) <= cur + len)	1207	if (SvLEN (sv) - cur <= len)
1074	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	1208	json_sv_grow (sv, cur, len);
1075		1209
1076	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1210	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
1077	SvCUR_set (sv, SvCUR (sv) + len);	1211	SvCUR_set (sv, SvCUR (sv) + len);
1078	}	1212	}
1079	else	1213	else
…		…
1246	if (*dec->cur == ']')	1380	if (*dec->cur == ']')
1247	{	1381	{
1248	++dec->cur;	1382	++dec->cur;
1249	break;	1383	break;
1250	}	1384	}
1251		1385
1252	if (*dec->cur != ',')	1386	if (*dec->cur != ',')
1253	ERR (", or ] expected while parsing array");	1387	ERR (", or ] expected while parsing array");
1254		1388
1255	++dec->cur;	1389	++dec->cur;
1256		1390
…		…
1380		1514
1381	hv_iterinit (hv);	1515	hv_iterinit (hv);
1382	he = hv_iternext (hv);	1516	he = hv_iternext (hv);
1383	hv_iterinit (hv);	1517	hv_iterinit (hv);
1384		1518
1385	// the next line creates a mortal sv each time its called.	1519	// the next line creates a mortal sv each time it's called.
1386	// might want to optimise this for common cases.	1520	// might want to optimise this for common cases.
1387	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);
1388		1522
1389	if (cb)	1523	if (cb)
1390	{	1524	{
1391	dSP;	1525	dSP;
1392	int count;	1526	int count;
1393		1527
1394	ENTER; SAVETMPS; PUSHMARK (SP);	1528	ENTER; SAVETMPS;
		1529	PUSHMARK (SP);
1395	XPUSHs (HeVAL (he));	1530	XPUSHs (HeVAL (he));
		1531	sv_2mortal (sv);
1396		1532
1397	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1533	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1398		1534
1399	if (count == 1)	1535	if (count == 1)
1400	{	1536	{
1401	sv = newSVsv (POPs);	1537	sv = newSVsv (POPs);
1402	FREETMPS; LEAVE;	1538	FREETMPS; LEAVE;
1403	return sv;	1539	return sv;
1404	}	1540	}
		1541	else if (count)
		1542	croak ("filter_json_single_key_object callbacks must not return more than one scalar");
1405		1543
		1544	SvREFCNT_inc (sv);
1406	FREETMPS; LEAVE;	1545	FREETMPS; LEAVE;
1407	}	1546	}
1408	}	1547	}
1409		1548
1410	if (dec->json.cb_object)	1549	if (dec->json.cb_object)
1411	{	1550	{
1412	dSP;	1551	dSP;
1413	int count;	1552	int count;
1414		1553
1415	ENTER; SAVETMPS; PUSHMARK (SP);	1554	ENTER; SAVETMPS;
		1555	PUSHMARK (SP);
1416	XPUSHs (sv_2mortal (sv));	1556	XPUSHs (sv_2mortal (sv));
1417		1557
1418	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1558	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1419		1559
1420	if (count == 1)	1560	if (count == 1)
1421	{	1561	{
1422	sv = newSVsv (POPs);	1562	sv = newSVsv (POPs);
1423	FREETMPS; LEAVE;	1563	FREETMPS; LEAVE;
1424	return sv;	1564	return sv;
1425	}	1565	}
		1566	else if (count)
		1567	croak ("filter_json_object callbacks must not return more than one scalar");
1426		1568
1427	SvREFCNT_inc (sv);	1569	SvREFCNT_inc (sv);
1428	FREETMPS; LEAVE;	1570	FREETMPS; LEAVE;
1429	}	1571	}
1430	}	1572	}
…		…
1436	DEC_DEC_DEPTH;	1578	DEC_DEC_DEPTH;
1437	return 0;	1579	return 0;
1438	}	1580	}
1439		1581
1440	static SV *	1582	static SV *
		1583	decode_tag (dec_t *dec)
		1584	{
		1585	SV *tag = 0;
		1586	SV *val = 0;
		1587
		1588	if (!(dec->json.flags & F_ALLOW_TAGS))
		1589	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1590
		1591	++dec->cur;
		1592
		1593	decode_ws (dec);
		1594
		1595	tag = decode_sv (dec);
		1596	if (!tag)
		1597	goto fail;
		1598
		1599	if (!SvPOK (tag))
		1600	ERR ("malformed JSON string, (tag) must be a string");
		1601
		1602	decode_ws (dec);
		1603
		1604	if (*dec->cur != ')')
		1605	ERR (") expected after tag");
		1606
		1607	++dec->cur;
		1608
		1609	decode_ws (dec);
		1610
		1611	val = decode_sv (dec);
		1612	if (!val)
		1613	goto fail;
		1614
		1615	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1616	ERR ("malformed JSON string, tag value must be an array");
		1617
		1618	{
		1619	AV av = (AV )SvRV (val);
		1620	int i, len = av_len (av) + 1;
		1621	HV *stash = gv_stashsv (tag, 0);
		1622	SV *sv;
		1623
		1624	if (!stash)
		1625	ERR ("cannot decode perl-object (package does not exist)");
		1626
		1627	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1628
		1629	if (!method)
		1630	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1631
		1632	dSP;
		1633
		1634	ENTER; SAVETMPS;
		1635	PUSHMARK (SP);
		1636	EXTEND (SP, len + 2);
		1637	// we re-bless the reference to get overload and other niceties right
		1638	PUSHs (tag);
		1639	PUSHs (sv_json);
		1640
		1641	for (i = 0; i < len; ++i)
		1642	PUSHs (*av_fetch (av, i, 1));
		1643
		1644	PUTBACK;
		1645	call_sv ((SV *)GvCV (method), G_SCALAR);
		1646	SPAGAIN;
		1647
		1648	SvREFCNT_dec (tag);
		1649	SvREFCNT_dec (val);
		1650	sv = SvREFCNT_inc (POPs);
		1651
		1652	PUTBACK;
		1653
		1654	FREETMPS; LEAVE;
		1655
		1656	return sv;
		1657	}
		1658
		1659	fail:
		1660	SvREFCNT_dec (tag);
		1661	SvREFCNT_dec (val);
		1662	return 0;
		1663	}
		1664
		1665	static SV *
1441	decode_sv (dec_t *dec)	1666	decode_sv (dec_t *dec)
1442	{	1667	{
1443	// the beauty of JSON: you need exactly one character lookahead	1668	// the beauty of JSON: you need exactly one character lookahead
1444	// to parse everything.	1669	// to parse everything.
1445	switch (*dec->cur)	1670	switch (*dec->cur)
1446	{	1671	{
1447	case '"': ++dec->cur; return decode_str (dec);	1672	case '"': ++dec->cur; return decode_str (dec);
1448	case '[': ++dec->cur; return decode_av (dec);	1673	case '[': ++dec->cur; return decode_av (dec);
1449	case '{': ++dec->cur; return decode_hv (dec);	1674	case '{': ++dec->cur; return decode_hv (dec);
		1675	case '(': return decode_tag (dec);
1450		1676
1451	case '-':	1677	case '-':
1452	case '0': case '1': case '2': case '3': case '4':	1678	case '0': case '1': case '2': case '3': case '4':
1453	case '5': case '6': case '7': case '8': case '9':	1679	case '5': case '6': case '7': case '8': case '9':
1454	return decode_num (dec);	1680	return decode_num (dec);
1455		1681
		1682	case 'f':
		1683	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
		1684	{
		1685	dec->cur += 5;
		1686
		1687	if (expect_false (!dec->json.v_false))
		1688	dec->json.v_false = GET_BOOL (false);
		1689
		1690	return newSVsv (dec->json.v_false);
		1691	}
		1692	else
		1693	ERR ("'false' expected");
		1694
		1695	break;
		1696
1456	case 't':	1697	case 't':
1457	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1698	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1458	{	1699	{
1459	dec->cur += 4;	1700	dec->cur += 4;
1460	#if JSON_SLOW	1701
1461	json_true = get_bool ("JSON::XS::true");	1702	if (expect_false (!dec->json.v_true))
1462	#endif	1703	dec->json.v_true = GET_BOOL (true);
		1704
1463	return newSVsv (json_true);	1705	return newSVsv (dec->json.v_true);
1464	}	1706	}
1465	else	1707	else
1466	ERR ("'true' expected");	1708	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		1709
1482	break;	1710	break;
1483		1711
1484	case 'n':	1712	case 'n':
1485	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	1713	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
…		…
1491	ERR ("'null' expected");	1719	ERR ("'null' expected");
1492		1720
1493	break;	1721	break;
1494		1722
1495	default:	1723	default:
1496	ERR ("malformed JSON string, neither array, object, number, string or atom");	1724	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1497	break;	1725	break;
1498	}	1726	}
1499		1727
1500	fail:	1728	fail:
1501	return 0;	1729	return 0;
1502	}	1730	}
1503		1731
1504	static SV *	1732	static SV *
1505	decode_json (SV string, JSON json, char **offset_return)	1733	decode_json (SV string, JSON json, STRLEN *offset_return)
1506	{	1734	{
1507	dec_t dec;	1735	dec_t dec;
1508	SV *sv;	1736	SV *sv;
1509		1737
1510	/* work around bugs in 5.10 where manipulating magic values	1738	/* work around bugs in 5.10 where manipulating magic values
1511	* will perl ignore the magic in subsequent accesses	1739	* makes perl ignore the magic in subsequent accesses.
		1740	* also make a copy of non-PV values, to get them into a clean
		1741	* state (SvPV should do that, but it's buggy, see below).
		1742	*
		1743	* SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
		1744	* as reported by Reini Urban.
1512	*/	1745	*/
1513	/SvGETMAGIC (string);/	1746	/SvGETMAGIC (string);/
1514	if (SvMAGICAL (string))	1747	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
1515	string = sv_2mortal (newSVsv (string));	1748	string = sv_2mortal (newSVsv (string));
1516		1749
1517	SvUPGRADE (string, SVt_PV);	1750	SvUPGRADE (string, SVt_PV);
1518		1751
1519	/* work around a bug in perl 5.10, which causes SvCUR to fail an	1752	/* work around a bug in perl 5.10, which causes SvCUR to fail an
…		…
1536	if (offset > json->max_size && json->max_size)	1769	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",	1770	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);	1771	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
1539	}	1772	}
1540		1773
1541	if (json->flags & F_UTF8)	1774	if (DECODE_WANTS_OCTETS (json))
1542	sv_utf8_downgrade (string, 0);	1775	sv_utf8_downgrade (string, 0);
1543	else	1776	else
1544	sv_utf8_upgrade (string);	1777	sv_utf8_upgrade (string);
1545		1778
1546	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1779	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
…		…
1558		1791
1559	decode_ws (&dec);	1792	decode_ws (&dec);
1560	sv = decode_sv (&dec);	1793	sv = decode_sv (&dec);
1561		1794
1562	if (offset_return)	1795	if (offset_return)
1563	*offset_return = dec.cur;	1796	*offset_return = dec.cur - SvPVX (string);
1564		1797	else if (sv)
1565	if (!(offset_return \|\| !sv))
1566	{	1798	{
1567	// check for trailing garbage	1799	// check for trailing garbage
1568	decode_ws (&dec);	1800	decode_ws (&dec);
1569		1801
1570	if (*dec.cur)	1802	if (dec.cur != dec.end)
1571	{	1803	{
1572	dec.err = "garbage after JSON object";	1804	dec.err = "garbage after JSON object";
1573	SvREFCNT_dec (sv);	1805	SvREFCNT_dec (sv);
1574	sv = 0;	1806	sv = 0;
1575	}	1807	}
…		…
1588	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1820	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1589	LEAVE;	1821	LEAVE;
1590		1822
1591	croak ("%s, at character offset %d (before \"%s\")",	1823	croak ("%s, at character offset %d (before \"%s\")",
1592	dec.err,	1824	dec.err,
1593	ptr_to_index (string, dec.cur),	1825	(int)ptr_to_index (string, dec.cur),
1594	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1826	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1595	}	1827	}
1596		1828
1597	sv = sv_2mortal (sv);	1829	sv = sv_2mortal (sv);
1598		1830
1599	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1831	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)");	1832	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1601		1833
1602	return sv;	1834	return sv;
1603	}	1835	}
1604		1836
…		…
1613	// the state machine here is a bit convoluted and could be simplified a lot	1845	// the state machine here is a bit convoluted and could be simplified a lot
1614	// but this would make it slower, so...	1846	// but this would make it slower, so...
1615		1847
1616	for (;;)	1848	for (;;)
1617	{	1849	{
1618	//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
1619	switch (self->incr_mode)	1850	switch (self->incr_mode)
1620	{	1851	{
		1852	// reached end of a scalar, see if we are inside a nested structure or not
		1853	end_of_scalar:
		1854	self->incr_mode = INCR_M_JSON;
		1855
		1856	if (self->incr_nest) // end of a scalar inside array, object or tag
		1857	goto incr_m_json;
		1858	else // end of scalar outside structure, json text ends here
		1859	goto interrupt;
		1860
1621	// only used for initial whitespace skipping	1861	// only used for initial whitespace skipping
1622	case INCR_M_WS:	1862	case INCR_M_WS:
1623	for (;;)	1863	for (;;)
1624	{	1864	{
1625	if (*p > 0x20)	1865	if (*p > 0x20)
…		…
1667	++p;	1907	++p;
1668	}	1908	}
1669		1909
1670	break;	1910	break;
1671		1911
		1912	// inside true/false/null
		1913	case INCR_M_TFN:
		1914	incr_m_tfn:
		1915	for (;;)
		1916	switch (*p++)
		1917	{
		1918	case 'r': case 'u': case 'e': // tRUE, falsE, nUll
		1919	case 'a': case 'l': case 's': // fALSe, nuLL
		1920	// allowed
		1921	break;
		1922
		1923	default:
		1924	--p;
		1925	goto end_of_scalar;
		1926	}
		1927
		1928	// inside a number
		1929	case INCR_M_NUM:
		1930	incr_m_num:
		1931	for (;;)
		1932	switch (*p++)
		1933	{
		1934	case 'e': case 'E': case '.': case '+':
		1935	case '-':
		1936	case '0': case '1': case '2': case '3': case '4':
		1937	case '5': case '6': case '7': case '8': case '9':
		1938	// allowed
		1939	break;
		1940
		1941	default:
		1942	--p;
		1943	goto end_of_scalar;
		1944	}
		1945
1672	// inside a string	1946	// inside a string
1673	case INCR_M_STR:	1947	case INCR_M_STR:
1674	incr_m_str:	1948	incr_m_str:
1675	for (;;)	1949	for (;;)
1676	{	1950	{
1677	if (*p == '"')	1951	if (*p == '"')
1678	{	1952	{
1679	++p;	1953	++p;
1680	self->incr_mode = INCR_M_JSON;
1681
1682	if (!self->incr_nest)
1683	goto interrupt;
1684
1685	goto incr_m_json;	1954	goto end_of_scalar;
1686	}	1955	}
1687	else if (*p == '\\')	1956	else if (*p == '\\')
1688	{	1957	{
1689	++p; // "virtually" consumes character after \	1958	++p; // "virtually" consumes character after \
1690		1959
…		…
1720	--p; // do not eat the whitespace, let the next round do it	1989	--p; // do not eat the whitespace, let the next round do it
1721	goto interrupt;	1990	goto interrupt;
1722	}	1991	}
1723	break;	1992	break;
1724		1993
		1994	// the following three blocks handle scalars. this makes the parser
		1995	// more strict than required inside arrays or objects, and could
		1996	// be moved to a special case on the toplevel (except strings)
		1997	case 't':
		1998	case 'f':
		1999	case 'n':
		2000	self->incr_mode = INCR_M_TFN;
		2001	goto incr_m_tfn;
		2002
		2003	case '-':
		2004	case '0': case '1': case '2': case '3': case '4':
		2005	case '5': case '6': case '7': case '8': case '9':
		2006	self->incr_mode = INCR_M_NUM;
		2007	goto incr_m_num;
		2008
1725	case '"':	2009	case '"':
1726	self->incr_mode = INCR_M_STR;	2010	self->incr_mode = INCR_M_STR;
1727	goto incr_m_str;	2011	goto incr_m_str;
1728		2012
1729	case '[':	2013	case '[':
1730	case '{':	2014	case '{':
		2015	case '(':
1731	if (++self->incr_nest > self->max_depth)	2016	if (++self->incr_nest > self->max_depth)
1732	croak (ERR_NESTING_EXCEEDED);	2017	croak (ERR_NESTING_EXCEEDED);
1733	break;	2018	break;
1734		2019
1735	case ']':	2020	case ']':
1736	case '}':	2021	case '}':
1737	if (--self->incr_nest <= 0)	2022	if (--self->incr_nest <= 0)
1738	goto interrupt;	2023	goto interrupt;
		2024	break;
		2025
		2026	case ')':
		2027	--self->incr_nest;
1739	break;	2028	break;
1740		2029
1741	case '#':	2030	case '#':
1742	self->incr_mode = INCR_M_C1;	2031	self->incr_mode = INCR_M_C1;
1743	goto incr_m_c;	2032	goto incr_m_c;
…		…
1769	i >= '0' && i <= '9' ? i - '0'	2058	i >= '0' && i <= '9' ? i - '0'
1770	: i >= 'a' && i <= 'f' ? i - 'a' + 10	2059	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1771	: i >= 'A' && i <= 'F' ? i - 'A' + 10	2060	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1772	: -1;	2061	: -1;
1773		2062
1774	json_stash = gv_stashpv ("JSON::XS" , 1);	2063	json_stash = gv_stashpv ("JSON::XS" , 1);
1775	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	2064	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");	2065	bool_false = get_bool ("Types::Serialiser::false");
		2066	bool_true = get_bool ("Types::Serialiser::true");
		2067
		2068	sv_json = newSVpv ("JSON", 0);
		2069	SvREADONLY_on (sv_json);
1779		2070
1780	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */	2071	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1781	}	2072	}
1782		2073
1783	PROTOTYPES: DISABLE	2074	PROTOTYPES: DISABLE
1784		2075
1785	void CLONE (...)	2076	void CLONE (...)
1786	CODE:	2077	CODE:
		2078	// as long as these writes are atomic, the race should not matter
		2079	// as existing threads either already use 0, or use the old value,
		2080	// which is sitll correct for the initial thread.
1787	json_stash = 0;	2081	json_stash = 0;
1788	json_boolean_stash = 0;	2082	bool_stash = 0;
		2083	bool_false = 0;
		2084	bool_true = 0;
1789		2085
1790	void new (char *klass)	2086	void new (char *klass)
1791	PPCODE:	2087	PPCODE:
1792	{	2088	{
1793	SV *pv = NEWSV (0, sizeof (JSON));	2089	SV *pv = NEWSV (0, sizeof (JSON));
1794	SvPOK_only (pv);	2090	SvPOK_only (pv);
1795	json_init ((JSON *)SvPVX (pv));	2091	json_init ((JSON *)SvPVX (pv));
1796	XPUSHs (sv_2mortal (sv_bless (	2092	XPUSHs (sv_2mortal (sv_bless (
1797	newRV_noinc (pv),	2093	newRV_noinc (pv),
1798	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	2094	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1799	)));	2095	)));
1800	}	2096	}
		2097
		2098	void boolean_values (JSON self, SV v_false = 0, SV *v_true = 0)
		2099	PPCODE:
		2100	self->v_false = newSVsv (v_false);
		2101	self->v_true = newSVsv (v_true);
		2102	XPUSHs (ST (0));
		2103
		2104	void get_boolean_values (JSON *self)
		2105	PPCODE:
		2106	if (self->v_false && self->v_true)
		2107	{
		2108	EXTEND (SP, 2);
		2109	PUSHs (self->v_false);
		2110	PUSHs (self->v_true);
		2111	}
1801		2112
1802	void ascii (JSON *self, int enable = 1)	2113	void ascii (JSON *self, int enable = 1)
1803	ALIAS:	2114	ALIAS:
1804	ascii = F_ASCII	2115	ascii = F_ASCII
1805	latin1 = F_LATIN1	2116	latin1 = F_LATIN1
…		…
1813	shrink = F_SHRINK	2124	shrink = F_SHRINK
1814	allow_blessed = F_ALLOW_BLESSED	2125	allow_blessed = F_ALLOW_BLESSED
1815	convert_blessed = F_CONV_BLESSED	2126	convert_blessed = F_CONV_BLESSED
1816	relaxed = F_RELAXED	2127	relaxed = F_RELAXED
1817	allow_unknown = F_ALLOW_UNKNOWN	2128	allow_unknown = F_ALLOW_UNKNOWN
		2129	allow_tags = F_ALLOW_TAGS
1818	PPCODE:	2130	PPCODE:
1819	{	2131	{
1820	if (enable)	2132	if (enable)
1821	self->flags \|= ix;	2133	self->flags \|= ix;
1822	else	2134	else
…		…
1838	get_shrink = F_SHRINK	2150	get_shrink = F_SHRINK
1839	get_allow_blessed = F_ALLOW_BLESSED	2151	get_allow_blessed = F_ALLOW_BLESSED
1840	get_convert_blessed = F_CONV_BLESSED	2152	get_convert_blessed = F_CONV_BLESSED
1841	get_relaxed = F_RELAXED	2153	get_relaxed = F_RELAXED
1842	get_allow_unknown = F_ALLOW_UNKNOWN	2154	get_allow_unknown = F_ALLOW_UNKNOWN
		2155	get_allow_tags = F_ALLOW_TAGS
1843	PPCODE:	2156	PPCODE:
1844	XPUSHs (boolSV (self->flags & ix));	2157	XPUSHs (boolSV (self->flags & ix));
1845		2158
1846	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)	2159	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1847	PPCODE:	2160	PPCODE:
…		…
1875	}	2188	}
1876		2189
1877	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2190	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1878	PPCODE:	2191	PPCODE:
1879	{	2192	{
1880	if (!self->cb_sk_object)	2193	if (!self->cb_sk_object)
1881	self->cb_sk_object = newHV ();	2194	self->cb_sk_object = newHV ();
1882		2195
1883	if (SvOK (cb))	2196	if (SvOK (cb))
1884	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2197	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1885	else	2198	else
…		…
1896	XPUSHs (ST (0));	2209	XPUSHs (ST (0));
1897	}	2210	}
1898		2211
1899	void encode (JSON self, SV scalar)	2212	void encode (JSON self, SV scalar)
1900	PPCODE:	2213	PPCODE:
1901	XPUSHs (encode_json (scalar, self));	2214	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2215	XPUSHs (scalar);
1902		2216
1903	void decode (JSON self, SV jsonstr)	2217	void decode (JSON self, SV jsonstr)
1904	PPCODE:	2218	PPCODE:
1905	XPUSHs (decode_json (jsonstr, self, 0));	2219	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2220	XPUSHs (jsonstr);
1906		2221
1907	void decode_prefix (JSON self, SV jsonstr)	2222	void decode_prefix (JSON self, SV jsonstr)
1908	PPCODE:	2223	PPCODE:
1909	{	2224	{
1910	char *offset;	2225	SV *sv;
		2226	STRLEN offset;
		2227	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1911	EXTEND (SP, 2);	2228	EXTEND (SP, 2);
1912	PUSHs (decode_json (jsonstr, self, &offset));	2229	PUSHs (sv);
1913	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));	2230	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
1914	}	2231	}
1915		2232
1916	void incr_parse (JSON self, SV jsonstr = 0)	2233	void incr_parse (JSON self, SV jsonstr = 0)
1917	PPCODE:	2234	PPCODE:
1918	{	2235	{
1919	if (!self->incr_text)	2236	if (!self->incr_text)
1920	self->incr_text = newSVpvn ("", 0);	2237	self->incr_text = newSVpvn ("", 0);
		2238
		2239	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2240	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2241	if (DECODE_WANTS_OCTETS (self))
		2242	{
		2243	if (self->incr_pos)
		2244	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2245	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2246
		2247	sv_utf8_downgrade (self->incr_text, 0);
		2248	}
		2249	else
		2250	{
		2251	sv_utf8_upgrade (self->incr_text);
		2252
		2253	if (self->incr_pos)
		2254	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2255	- (U8 *)SvPVX (self->incr_text);
		2256	}
1921		2257
1922	// append data, if any	2258	// append data, if any
1923	if (jsonstr)	2259	if (jsonstr)
1924	{	2260	{
		2261	/* make sure both strings have same encoding */
		2262	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
1925	if (SvUTF8 (jsonstr))	2263	if (SvUTF8 (jsonstr))
		2264	sv_utf8_downgrade (jsonstr, 0);
1926	{	2265	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);	2266	sv_utf8_upgrade (jsonstr);
1939		2267
		2268	/* and then just blindly append */
1940	{	2269	{
1941	STRLEN len;	2270	STRLEN len;
1942	const char *str = SvPV (jsonstr, len);	2271	const char *str = SvPV (jsonstr, len);
1943	STRLEN cur = SvCUR (self->incr_text);	2272	STRLEN cur = SvCUR (self->incr_text);
1944		2273
1945	if (SvLEN (self->incr_text) <= cur + len)	2274	if (SvLEN (self->incr_text) - cur <= len)
1946	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	2275	json_sv_grow (self->incr_text, cur, len);
1947		2276
1948	Move (str, SvEND (self->incr_text), len, char);	2277	Move (str, SvEND (self->incr_text), len, char);
1949	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);	2278	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	2279	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1951	}	2280	}
1952	}	2281	}
1953		2282
1954	if (GIMME_V != G_VOID)	2283	if (GIMME_V != G_VOID)
1955	do	2284	do
1956	{	2285	{
		2286	SV *sv;
1957	char *offset;	2287	STRLEN offset;
1958		2288
1959	if (!INCR_DONE (self))	2289	if (!INCR_DONE (self))
1960	{	2290	{
1961	incr_parse (self);	2291	incr_parse (self);
1962		2292
1963	if (self->incr_pos > self->max_size && self->max_size)	2293	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",	2294	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);	2295	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
1966		2296
1967	if (!INCR_DONE (self))	2297	if (!INCR_DONE (self))
		2298	{
		2299	// as an optimisation, do not accumulate white space in the incr buffer
		2300	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2301	{
		2302	self->incr_pos = 0;
		2303	SvCUR_set (self->incr_text, 0);
		2304	}
		2305
1968	break;	2306	break;
		2307	}
1969	}	2308	}
1970		2309
1971	XPUSHs (decode_json (self->incr_text, self, &offset));	2310	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2311	XPUSHs (sv);
1972		2312
1973	self->incr_pos -= offset - SvPVX (self->incr_text);	2313	self->incr_pos -= offset;
1974	self->incr_nest = 0;	2314	self->incr_nest = 0;
1975	self->incr_mode = 0;	2315	self->incr_mode = 0;
1976		2316
1977	sv_chop (self->incr_text, offset);	2317	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
1978	}	2318	}
1979	while (GIMME_V == G_ARRAY);	2319	while (GIMME_V == G_ARRAY);
1980	}	2320	}
1981		2321
1982	SV incr_text (JSON self)	2322	SV incr_text (JSON self)
…		…
2013	self->incr_mode = 0;	2353	self->incr_mode = 0;
2014	}	2354	}
2015		2355
2016	void DESTROY (JSON *self)	2356	void DESTROY (JSON *self)
2017	CODE:	2357	CODE:
		2358	SvREFCNT_dec (self->v_false);
		2359	SvREFCNT_dec (self->v_true);
2018	SvREFCNT_dec (self->cb_sk_object);	2360	SvREFCNT_dec (self->cb_sk_object);
2019	SvREFCNT_dec (self->cb_object);	2361	SvREFCNT_dec (self->cb_object);
2020	SvREFCNT_dec (self->incr_text);	2362	SvREFCNT_dec (self->incr_text);
2021		2363
2022	PROTOTYPES: ENABLE	2364	PROTOTYPES: ENABLE
2023		2365
2024	void encode_json (SV *scalar)	2366	void encode_json (SV *scalar)
2025	ALIAS:
2026	to_json_ = 0
2027	encode_json = F_UTF8
2028	PPCODE:	2367	PPCODE:
2029	{	2368	{
2030	JSON json;	2369	JSON json;
2031	json_init (&json);	2370	json_init (&json);
2032	json.flags \|= ix;	2371	json.flags \|= F_UTF8;
2033	XPUSHs (encode_json (scalar, &json));	2372	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2373	XPUSHs (scalar);
2034	}	2374	}
2035		2375
2036	void decode_json (SV *jsonstr)	2376	void decode_json (SV *jsonstr)
2037	ALIAS:
2038	from_json_ = 0
2039	decode_json = F_UTF8
2040	PPCODE:	2377	PPCODE:
2041	{	2378	{
2042	JSON json;	2379	JSON json;
2043	json_init (&json);	2380	json_init (&json);
2044	json.flags \|= ix;	2381	json.flags \|= F_UTF8;
2045	XPUSHs (decode_json (jsonstr, &json, 0));	2382	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2383	XPUSHs (jsonstr);
2046	}	2384	}
2047		2385

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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 1.136 by root, Thu Nov 15 22:35:35 2018 UTC

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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 1.136 by root, Thu Nov 15 22:35:35 2018 UTC