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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.97 by root, Fri Jul 3 09:38:30 2009 UTC vs.
Revision 1.132 by root, Tue Sep 5 13:07:09 2017 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	// guarentees, 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
20	#endif	21	#endif
21		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
		32	#endif
		33
		34	// three extra for rounding, sign, and end of string
22	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 2)	35	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)
23		36
24	#define F_ASCII 0x00000001UL	37	#define F_ASCII 0x00000001UL
25	#define F_LATIN1 0x00000002UL	38	#define F_LATIN1 0x00000002UL
26	#define F_UTF8 0x00000004UL	39	#define F_UTF8 0x00000004UL
27	#define F_INDENT 0x00000008UL	40	#define F_INDENT 0x00000008UL
…		…
32	#define F_SHRINK 0x00000200UL	45	#define F_SHRINK 0x00000200UL
33	#define F_ALLOW_BLESSED 0x00000400UL	46	#define F_ALLOW_BLESSED 0x00000400UL
34	#define F_CONV_BLESSED 0x00000800UL	47	#define F_CONV_BLESSED 0x00000800UL
35	#define F_RELAXED 0x00001000UL	48	#define F_RELAXED 0x00001000UL
36	#define F_ALLOW_UNKNOWN 0x00002000UL	49	#define F_ALLOW_UNKNOWN 0x00002000UL
		50	#define F_ALLOW_TAGS 0x00004000UL
37	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing	51	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
38		52
39	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	53	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
40		54
41	#define INIT_SIZE 32 // initial scalar size to be allocated	55	#define INIT_SIZE 32 // initial scalar size to be allocated
42	#define INDENT_STEP 3 // spaces per indentation level	56	#define INDENT_STEP 3 // spaces per indentation level
43		57
44	#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)
45		61
46	#define SB do {	62	#define SB do {
47	#define SE } while (0)	63	#define SE } while (0)
48		64
49	#if __GNUC__ >= 3	65	#if __GNUC__ >= 3
…		…
64	#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?)"
65		81
66	#ifdef USE_ITHREADS	82	#ifdef USE_ITHREADS
67	# define JSON_SLOW 1	83	# define JSON_SLOW 1
68	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))	84	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))
		85	# define BOOL_STASH (bool_stash ? bool_stash : gv_stashpv ("Types::Serialiser::Boolean", 1))
69	#else	86	#else
70	# define JSON_SLOW 0	87	# define JSON_SLOW 0
71	# define JSON_STASH json_stash	88	# define JSON_STASH json_stash
		89	# define BOOL_STASH bool_stash
72	#endif	90	#endif
73		91
74	static HV json_stash, json_boolean_stash; // JSON::XS::	92	// the amount of HEs to allocate on the stack, when sorting keys
75	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_true, bool_false, *sv_json;
76		97
77	enum {	98	enum {
78	INCR_M_WS = 0, // initial whitespace skipping, must be 0	99	INCR_M_WS = 0, // initial whitespace skipping, must be 0
79	INCR_M_STR, // inside string	100	INCR_M_STR, // inside string
80	INCR_M_BS, // inside backslash	101	INCR_M_BS, // inside backslash
		102	INCR_M_C0, // inside comment in initial whitespace sequence
		103	INCR_M_C1, // inside comment in other places
81	INCR_M_JSON // outside anything, count nesting	104	INCR_M_JSON // outside anything, count nesting
82	};	105	};
83		106
84	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)	107	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)
85		108
…		…
132	SvPV_renew (sv, SvCUR (sv) + 1);	155	SvPV_renew (sv, SvCUR (sv) + 1);
133	#endif	156	#endif
134	}	157	}
135	}	158	}
136		159
		160	/* adds two STRLENs together, slow, and with paranoia */
		161	STRLEN
		162	strlen_sum (STRLEN l1, STRLEN l2)
		163	{
		164	size_t sum = l1 + l2;
		165
		166	if (sum < (size_t)l2 \|\| sum != (size_t)(STRLEN)sum)
		167	croak ("JSON::XS: string size overflow");
		168
		169	return sum;
		170	}
		171
		172	/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */
		173	static char *
		174	json_sv_grow (SV *sv, size_t len1, size_t len2)
		175	{
		176	len1 = strlen_sum (len1, len2);
		177	len1 = strlen_sum (len1, len1 >> 1);
		178
		179	if (len1 > 4096 - 24)
		180	len1 = (len1 \| 4095) - 24;
		181
		182	return SvGROW (sv, len1);
		183	}
		184
137	// decode an utf-8 character and return it, or (UV)-1 in	185	// decode a utf-8 character and return it, or (UV)-1 in
138	// case of an error.	186	// case of an error.
139	// we special-case "safe" characters from U+80 .. U+7FF,	187	// we special-case "safe" characters from U+80 .. U+7FF,
140	// but use the very good perl function to parse anything else.	188	// but use the very good perl function to parse anything else.
141	// note that we never call this function for a ascii codepoints	189	// note that we never call this function for a ascii codepoints
142	INLINE UV	190	INLINE UV
…		…
185	? utf8_distance (offset, SvPVX (sv))	233	? utf8_distance (offset, SvPVX (sv))
186	: offset - SvPVX (sv);	234	: offset - SvPVX (sv);
187	}	235	}
188		236
189	/////////////////////////////////////////////////////////////////////////////	237	/////////////////////////////////////////////////////////////////////////////
		238	// fp hell
		239
		240	// scan a group of digits, and a trailing exponent
		241	static void
		242	json_atof_scan1 (const char s, NV accum, int *expo, int postdp, int maxdepth)
		243	{
		244	UV uaccum = 0;
		245	int eaccum = 0;
		246
		247	// if we recurse too deep, skip all remaining digits
		248	// to avoid a stack overflow attack
		249	if (expect_false (--maxdepth <= 0))
		250	while (((U8)*s - '0') < 10)
		251	++s;
		252
		253	for (;;)
		254	{
		255	U8 dig = (U8)*s - '0';
		256
		257	if (expect_false (dig >= 10))
		258	{
		259	if (dig == (U8)((U8)'.' - (U8)'0'))
		260	{
		261	++s;
		262	json_atof_scan1 (s, accum, expo, 1, maxdepth);
		263	}
		264	else if ((dig \| ' ') == 'e' - '0')
		265	{
		266	int exp2 = 0;
		267	int neg = 0;
		268
		269	++s;
		270
		271	if (*s == '-')
		272	{
		273	++s;
		274	neg = 1;
		275	}
		276	else if (*s == '+')
		277	++s;
		278
		279	while ((dig = (U8)*s - '0') < 10)
		280	exp2 = exp2 * 10 + *s++ - '0';
		281
		282	*expo += neg ? -exp2 : exp2;
		283	}
		284
		285	break;
		286	}
		287
		288	++s;
		289
		290	uaccum = uaccum * 10 + dig;
		291	++eaccum;
		292
		293	// if we have too many digits, then recurse for more
		294	// we actually do this for rather few digits
		295	if (uaccum >= (UV_MAX - 9) / 10)
		296	{
		297	if (postdp) *expo -= eaccum;
		298	json_atof_scan1 (s, accum, expo, postdp, maxdepth);
		299	if (postdp) *expo += eaccum;
		300
		301	break;
		302	}
		303	}
		304
		305	// this relies greatly on the quality of the pow ()
		306	// implementation of the platform, but a good
		307	// implementation is hard to beat.
		308	// (IEEE 754 conformant ones are required to be exact)
		309	if (postdp) *expo -= eaccum;
		310	accum += uaccum Perl_pow (10., *expo);
		311	*expo += eaccum;
		312	}
		313
		314	static NV
		315	json_atof (const char *s)
		316	{
		317	NV accum = 0.;
		318	int expo = 0;
		319	int neg = 0;
		320
		321	if (*s == '-')
		322	{
		323	++s;
		324	neg = 1;
		325	}
		326
		327	// a recursion depth of ten gives us >>500 bits
		328	json_atof_scan1 (s, &accum, &expo, 0, 10);
		329
		330	return neg ? -accum : accum;
		331	}
		332
		333	// target of scalar reference is bool? -1 == nope, 0 == false, 1 == true
		334	static int
		335	ref_bool_type (SV *sv)
		336	{
		337	svtype svt = SvTYPE (sv);
		338
		339	if (svt < SVt_PVAV)
		340	{
		341	STRLEN len = 0;
		342	char *pv = svt ? SvPV (sv, len) : 0;
		343
		344	if (len == 1)
		345	if (*pv == '1')
		346	return 1;
		347	else if (*pv == '0')
		348	return 0;
		349	}
		350
		351	return -1;
		352	}
		353
		354	// returns whether scalar is not a reference in the sense of allow_nonref
		355	static int
		356	json_nonref (SV *scalar)
		357	{
		358	if (!SvROK (scalar))
		359	return 1;
		360
		361	scalar = SvRV (scalar);
		362
		363	if (SvTYPE (scalar) >= SVt_PVMG)
		364	{
		365	if (SvSTASH (scalar) == bool_stash)
		366	return 1;
		367
		368	if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0)
		369	return 1;
		370	}
		371
		372	return 0;
		373	}
		374
		375	/////////////////////////////////////////////////////////////////////////////
190	// encoder	376	// encoder
191		377
192	// structure used for encoding JSON	378	// structure used for encoding JSON
193	typedef struct	379	typedef struct
194	{	380	{
…		…
201	} enc_t;	387	} enc_t;
202		388
203	INLINE void	389	INLINE void
204	need (enc_t *enc, STRLEN len)	390	need (enc_t *enc, STRLEN len)
205	{	391	{
206	if (expect_false (enc->cur + len >= enc->end))	392	if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
207	{	393	{
208	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	394	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
209	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	395	char *buf = json_sv_grow (enc->sv, cur, len);
210	enc->cur = SvPVX (enc->sv) + cur;	396	enc->cur = buf + cur;
211	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	397	enc->end = buf + SvLEN (enc->sv) - 1;
212	}	398	}
213	}	399	}
214		400
215	INLINE void	401	INLINE void
216	encode_ch (enc_t *enc, char ch)	402	encode_ch (enc_t *enc, char ch)
…		…
232		418
233	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case	419	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
234	{	420	{
235	if (expect_false (ch == '"')) // but with slow exceptions	421	if (expect_false (ch == '"')) // but with slow exceptions
236	{	422	{
237	need (enc, len += 1);	423	need (enc, len + 1);
238	*enc->cur++ = '\\';	424	*enc->cur++ = '\\';
239	*enc->cur++ = '"';	425	*enc->cur++ = '"';
240	}	426	}
241	else if (expect_false (ch == '\\'))	427	else if (expect_false (ch == '\\'))
242	{	428	{
243	need (enc, len += 1);	429	need (enc, len + 1);
244	*enc->cur++ = '\\';	430	*enc->cur++ = '\\';
245	*enc->cur++ = '\\';	431	*enc->cur++ = '\\';
246	}	432	}
247	else	433	else
248	*enc->cur++ = ch;	434	*enc->cur++ = ch;
…		…
251	}	437	}
252	else	438	else
253	{	439	{
254	switch (ch)	440	switch (ch)
255	{	441	{
256	case '\010': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;	442	case '\010': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;
257	case '\011': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 't'; ++str; break;	443	case '\011': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 't'; ++str; break;
258	case '\012': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;	444	case '\012': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;
259	case '\014': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;	445	case '\014': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;
260	case '\015': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;	446	case '\015': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;
261		447
262	default:	448	default:
263	{	449	{
264	STRLEN clen;	450	STRLEN clen;
265	UV uch;	451	UV uch;
…		…
281	if (uch >= 0x10000UL)	467	if (uch >= 0x10000UL)
282	{	468	{
283	if (uch >= 0x110000UL)	469	if (uch >= 0x110000UL)
284	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);	470	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
285		471
286	need (enc, len += 11);	472	need (enc, len + 11);
287	sprintf (enc->cur, "\\u%04x\\u%04x",	473	sprintf (enc->cur, "\\u%04x\\u%04x",
288	(int)((uch - 0x10000) / 0x400 + 0xD800),	474	(int)((uch - 0x10000) / 0x400 + 0xD800),
289	(int)((uch - 0x10000) % 0x400 + 0xDC00));	475	(int)((uch - 0x10000) % 0x400 + 0xDC00));
290	enc->cur += 12;	476	enc->cur += 12;
291	}	477	}
292	else	478	else
293	{	479	{
294	need (enc, len += 5);	480	need (enc, len + 5);
295	*enc->cur++ = '\\';	481	*enc->cur++ = '\\';
296	*enc->cur++ = 'u';	482	*enc->cur++ = 'u';
297	*enc->cur++ = PL_hexdigit [ uch >> 12 ];	483	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
298	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];	484	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
299	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];	485	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
…		…
307	*enc->cur++ = uch;	493	*enc->cur++ = uch;
308	str += clen;	494	str += clen;
309	}	495	}
310	else if (is_utf8)	496	else if (is_utf8)
311	{	497	{
312	need (enc, len += clen);	498	need (enc, len + clen);
313	do	499	do
314	{	500	{
315	enc->cur++ = str++;	501	enc->cur++ = str++;
316	}	502	}
317	while (--clen);	503	while (--clen);
318	}	504	}
319	else	505	else
320	{	506	{
321	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed	507	need (enc, len + UTF8_MAXBYTES - 1); // never more than 11 bytes needed
322	enc->cur = encode_utf8 (enc->cur, uch);	508	enc->cur = encode_utf8 (enc->cur, uch);
323	++str;	509	++str;
324	}	510	}
325	}	511	}
326	}	512	}
…		…
380		566
381	if (enc->indent >= enc->json.max_depth)	567	if (enc->indent >= enc->json.max_depth)
382	croak (ERR_NESTING_EXCEEDED);	568	croak (ERR_NESTING_EXCEEDED);
383		569
384	encode_ch (enc, '[');	570	encode_ch (enc, '[');
385		571
386	if (len >= 0)	572	if (len >= 0)
387	{	573	{
388	encode_nl (enc); ++enc->indent;	574	encode_nl (enc); ++enc->indent;
389		575
390	for (i = 0; i <= len; ++i)	576	for (i = 0; i <= len; ++i)
…		…
402	encode_comma (enc);	588	encode_comma (enc);
403	}	589	}
404		590
405	encode_nl (enc); --enc->indent; encode_indent (enc);	591	encode_nl (enc); --enc->indent; encode_indent (enc);
406	}	592	}
407		593
408	encode_ch (enc, ']');	594	encode_ch (enc, ']');
409	}	595	}
410		596
411	static void	597	static void
412	encode_hk (enc_t enc, HE he)	598	encode_hk (enc_t enc, HE he)
…		…
416	if (HeKLEN (he) == HEf_SVKEY)	602	if (HeKLEN (he) == HEf_SVKEY)
417	{	603	{
418	SV *sv = HeSVKEY (he);	604	SV *sv = HeSVKEY (he);
419	STRLEN len;	605	STRLEN len;
420	char *str;	606	char *str;
421		607
422	SvGETMAGIC (sv);	608	SvGETMAGIC (sv);
423	str = SvPV (sv, len);	609	str = SvPV (sv, len);
424		610
425	encode_str (enc, str, len, SvUTF8 (sv));	611	encode_str (enc, str, len, SvUTF8 (sv));
426	}	612	}
…		…
471		657
472	// for canonical output we have to sort by keys first	658	// for canonical output we have to sort by keys first
473	// actually, this is mostly due to the stupid so-called	659	// actually, this is mostly due to the stupid so-called
474	// security workaround added somewhere in 5.8.x	660	// security workaround added somewhere in 5.8.x
475	// that randomises hash orderings	661	// that randomises hash orderings
476	if (enc->json.flags & F_CANONICAL)	662	if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv))
477	{	663	{
478	int count = hv_iterinit (hv);	664	int count = hv_iterinit (hv);
479		665
480	if (SvMAGICAL (hv))	666	if (SvMAGICAL (hv))
481	{	667	{
…		…
492	}	678	}
493		679
494	if (count)	680	if (count)
495	{	681	{
496	int i, fast = 1;	682	int i, fast = 1;
497	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	683	HE *hes_stack [STACK_HES];
498	HE *hes = _alloca (count sizeof (HE));	684	HE **hes = hes_stack;
499	#else	685
500	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	686	// allocate larger arrays on the heap
501	#endif	687	if (count > STACK_HES)
		688	{
		689	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		690	hes = (HE **)SvPVX (sv);
		691	}
502		692
503	i = 0;	693	i = 0;
504	while ((he = hv_iternext (hv)))	694	while ((he = hv_iternext (hv)))
505	{	695	{
506	hes [i++] = he;	696	hes [i++] = he;
…		…
575	// encode objects, arrays and special \0=false and \1=true values.	765	// encode objects, arrays and special \0=false and \1=true values.
576	static void	766	static void
577	encode_rv (enc_t enc, SV sv)	767	encode_rv (enc_t enc, SV sv)
578	{	768	{
579	svtype svt;	769	svtype svt;
		770	GV *method;
580		771
581	SvGETMAGIC (sv);	772	SvGETMAGIC (sv);
582	svt = SvTYPE (sv);	773	svt = SvTYPE (sv);
583		774
584	if (expect_false (SvOBJECT (sv)))	775	if (expect_false (SvOBJECT (sv)))
585	{	776	{
586	HV *stash = !JSON_SLOW \|\| json_boolean_stash	777	HV *stash = SvSTASH (sv);
587	? json_boolean_stash
588	: gv_stashpv ("JSON::XS::Boolean", 1);
589		778
590	if (SvSTASH (sv) == stash)	779	if (stash == bool_stash)
591	{	780	{
592	if (SvIV (sv))	781	if (SvIV (sv))
593	encode_str (enc, "true", 4, 0);	782	encode_str (enc, "true", 4, 0);
594	else	783	else
595	encode_str (enc, "false", 5, 0);	784	encode_str (enc, "false", 5, 0);
596	}	785	}
		786	else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
		787	{
		788	int count;
		789	dSP;
		790
		791	ENTER; SAVETMPS;
		792	SAVESTACK_POS ();
		793	PUSHMARK (SP);
		794	EXTEND (SP, 2);
		795	// we re-bless the reference to get overload and other niceties right
		796	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		797	PUSHs (sv_json);
		798
		799	PUTBACK;
		800	count = call_sv ((SV *)GvCV (method), G_ARRAY);
		801	SPAGAIN;
		802
		803	// catch this surprisingly common error
		804	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		805	croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		806
		807	encode_ch (enc, '(');
		808	encode_ch (enc, '"');
		809	encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
		810	encode_ch (enc, '"');
		811	encode_ch (enc, ')');
		812	encode_ch (enc, '[');
		813
		814	while (count)
		815	{
		816	encode_sv (enc, SP[1 - count--]);
		817
		818	if (count)
		819	encode_ch (enc, ',');
		820	}
		821
		822	encode_ch (enc, ']');
		823
		824	FREETMPS; LEAVE;
		825	}
		826	else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
		827	{
		828	dSP;
		829
		830	ENTER; SAVETMPS;
		831	PUSHMARK (SP);
		832	// we re-bless the reference to get overload and other niceties right
		833	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		834
		835	// calling with G_SCALAR ensures that we always get a 1 return value
		836	PUTBACK;
		837	call_sv ((SV *)GvCV (method), G_SCALAR);
		838	SPAGAIN;
		839
		840	// catch this surprisingly common error
		841	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		842	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		843
		844	sv = POPs;
		845	PUTBACK;
		846
		847	encode_sv (enc, sv);
		848
		849	FREETMPS; LEAVE;
		850	}
		851	else if (enc->json.flags & F_ALLOW_BLESSED)
		852	encode_str (enc, "null", 4, 0);
597	else	853	else
598	{
599	#if 0
600	if (0 && sv_derived_from (rv, "JSON::Literal"))
601	{
602	// not yet
603	}
604	#endif
605	if (enc->json.flags & F_CONV_BLESSED)
606	{
607	// we re-bless the reference to get overload and other niceties right
608	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
609
610	if (to_json)
611	{
612	dSP;
613
614	ENTER; SAVETMPS; PUSHMARK (SP);
615	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
616
617	// calling with G_SCALAR ensures that we always get a 1 return value
618	PUTBACK;
619	call_sv ((SV *)GvCV (to_json), G_SCALAR);
620	SPAGAIN;
621
622	// catch this surprisingly common error
623	if (SvROK (TOPs) && SvRV (TOPs) == sv)
624	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
625
626	sv = POPs;
627	PUTBACK;
628
629	encode_sv (enc, sv);
630
631	FREETMPS; LEAVE;
632	}
633	else if (enc->json.flags & F_ALLOW_BLESSED)
634	encode_str (enc, "null", 4, 0);
635	else
636	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
637	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
638	}
639	else if (enc->json.flags & F_ALLOW_BLESSED)
640	encode_str (enc, "null", 4, 0);
641	else
642	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	854	croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
643	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	855	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
644	}
645	}	856	}
646	else if (svt == SVt_PVHV)	857	else if (svt == SVt_PVHV)
647	encode_hv (enc, (HV *)sv);	858	encode_hv (enc, (HV *)sv);
648	else if (svt == SVt_PVAV)	859	else if (svt == SVt_PVAV)
649	encode_av (enc, (AV *)sv);	860	encode_av (enc, (AV *)sv);
650	else if (svt < SVt_PVAV)	861	else if (svt < SVt_PVAV)
651	{	862	{
652	STRLEN len = 0;	863	int bool_type = ref_bool_type (sv);
653	char *pv = svt ? SvPV (sv, len) : 0;
654		864
655	if (len == 1 && *pv == '1')	865	if (bool_type == 1)
656	encode_str (enc, "true", 4, 0);	866	encode_str (enc, "true", 4, 0);
657	else if (len == 1 && *pv == '0')	867	else if (bool_type == 0)
658	encode_str (enc, "false", 5, 0);	868	encode_str (enc, "false", 5, 0);
659	else if (enc->json.flags & F_ALLOW_UNKNOWN)	869	else if (enc->json.flags & F_ALLOW_UNKNOWN)
660	encode_str (enc, "null", 4, 0);	870	encode_str (enc, "null", 4, 0);
661	else	871	else
662	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	872	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
…		…
725	}	935	}
726	else	936	else
727	{	937	{
728	// large integer, use the (rather slow) snprintf way.	938	// large integer, use the (rather slow) snprintf way.
729	need (enc, IVUV_MAXCHARS);	939	need (enc, IVUV_MAXCHARS);
730	enc->cur +=	940	enc->cur +=
731	SvIsUV(sv)	941	SvIsUV(sv)
732	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	942	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
733	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	943	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
734	}	944	}
735	}	945	}
736	else if (SvROK (sv))	946	else if (SvROK (sv))
737	encode_rv (enc, SvRV (sv));	947	encode_rv (enc, SvRV (sv));
738	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)	948	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
739	encode_str (enc, "null", 4, 0);	949	encode_str (enc, "null", 4, 0);
740	else	950	else
741	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	951	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
742	SvPV_nolen (sv), SvFLAGS (sv));	952	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
743	}	953	}
744		954
745	static SV *	955	static SV *
746	encode_json (SV scalar, JSON json)	956	encode_json (SV scalar, JSON json)
747	{	957	{
748	enc_t enc;	958	enc_t enc;
749		959
750	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	960	if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
751	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	961	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
752		962
753	enc.json = *json;	963	enc.json = *json;
754	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	964	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
755	enc.cur = SvPVX (enc.sv);	965	enc.cur = SvPVX (enc.sv);
…		…
759	: enc.json.flags & F_LATIN1 ? 0x000100UL	969	: enc.json.flags & F_LATIN1 ? 0x000100UL
760	: 0x110000UL;	970	: 0x110000UL;
761		971
762	SvPOK_only (enc.sv);	972	SvPOK_only (enc.sv);
763	encode_sv (&enc, scalar);	973	encode_sv (&enc, scalar);
		974	encode_nl (&enc);
764		975
765	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	976	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
766	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	977	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
767		978
768	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	979	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
…		…
948	else if (expect_true (ch >= 0x20 && ch < 0x80))	1159	else if (expect_true (ch >= 0x20 && ch < 0x80))
949	*cur++ = ch;	1160	*cur++ = ch;
950	else if (ch >= 0x80)	1161	else if (ch >= 0x80)
951	{	1162	{
952	STRLEN clen;	1163	STRLEN clen;
953	UV uch;
954		1164
955	--dec_cur;	1165	--dec_cur;
956		1166
957	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);	1167	decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
958	if (clen == (STRLEN)-1)	1168	if (clen == (STRLEN)-1)
959	ERR ("malformed UTF-8 character in JSON string");	1169	ERR ("malformed UTF-8 character in JSON string");
960		1170
961	do	1171	do
962	cur++ = dec_cur++;	1172	cur++ = dec_cur++;
963	while (--clen);	1173	while (--clen);
964		1174
965	utf8 = 1;	1175	utf8 = 1;
966	}	1176	}
		1177	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1178	*cur++ = ch;
967	else	1179	else
968	{	1180	{
969	--dec_cur;	1181	--dec_cur;
970		1182
971	if (!ch)	1183	if (!ch)
…		…
981		1193
982	if (sv)	1194	if (sv)
983	{	1195	{
984	STRLEN cur = SvCUR (sv);	1196	STRLEN cur = SvCUR (sv);
985		1197
986	if (SvLEN (sv) <= cur + len)	1198	if (SvLEN (sv) - cur <= len)
987	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	1199	json_sv_grow (sv, cur, len);
988		1200
989	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1201	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
990	SvCUR_set (sv, SvCUR (sv) + len);	1202	SvCUR_set (sv, SvCUR (sv) + len);
991	}	1203	}
992	else	1204	else
…		…
1116	}	1328	}
1117		1329
1118	len -= *start == '-' ? 1 : 0;	1330	len -= *start == '-' ? 1 : 0;
1119		1331
1120	// does not fit into IV or UV, try NV	1332	// does not fit into IV or UV, try NV
1121	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1333	if (len <= NV_DIG)
1122	#if defined (LDBL_DIG)
1123	\|\| (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
1124	#endif
1125	)
1126	// fits into NV without loss of precision	1334	// fits into NV without loss of precision
1127	return newSVnv (Atof (start));	1335	return newSVnv (json_atof (start));
1128		1336
1129	// everything else fails, convert it to a string	1337	// everything else fails, convert it to a string
1130	return newSVpvn (start, dec->cur - start);	1338	return newSVpvn (start, dec->cur - start);
1131	}	1339	}
1132		1340
1133	// loss of precision here	1341	// loss of precision here
1134	return newSVnv (Atof (start));	1342	return newSVnv (json_atof (start));
1135		1343
1136	fail:	1344	fail:
1137	return 0;	1345	return 0;
1138	}	1346	}
1139		1347
…		…
1163	if (*dec->cur == ']')	1371	if (*dec->cur == ']')
1164	{	1372	{
1165	++dec->cur;	1373	++dec->cur;
1166	break;	1374	break;
1167	}	1375	}
1168		1376
1169	if (*dec->cur != ',')	1377	if (*dec->cur != ',')
1170	ERR (", or ] expected while parsing array");	1378	ERR (", or ] expected while parsing array");
1171		1379
1172	++dec->cur;	1380	++dec->cur;
1173		1381
…		…
1297		1505
1298	hv_iterinit (hv);	1506	hv_iterinit (hv);
1299	he = hv_iternext (hv);	1507	he = hv_iternext (hv);
1300	hv_iterinit (hv);	1508	hv_iterinit (hv);
1301		1509
1302	// the next line creates a mortal sv each time its called.	1510	// the next line creates a mortal sv each time it's called.
1303	// might want to optimise this for common cases.	1511	// might want to optimise this for common cases.
1304	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);	1512	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1305		1513
1306	if (cb)	1514	if (cb)
1307	{	1515	{
1308	dSP;	1516	dSP;
1309	int count;	1517	int count;
1310		1518
1311	ENTER; SAVETMPS; PUSHMARK (SP);	1519	ENTER; SAVETMPS;
		1520	SAVESTACK_POS ();
		1521	PUSHMARK (SP);
1312	XPUSHs (HeVAL (he));	1522	XPUSHs (HeVAL (he));
		1523	sv_2mortal (sv);
1313		1524
1314	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1525	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1315		1526
1316	if (count == 1)	1527	if (count == 1)
1317	{	1528	{
1318	sv = newSVsv (POPs);	1529	sv = newSVsv (POPs);
1319	FREETMPS; LEAVE;	1530	FREETMPS; LEAVE;
1320	return sv;	1531	return sv;
1321	}	1532	}
1322		1533
		1534	SvREFCNT_inc (sv);
1323	FREETMPS; LEAVE;	1535	FREETMPS; LEAVE;
1324	}	1536	}
1325	}	1537	}
1326		1538
1327	if (dec->json.cb_object)	1539	if (dec->json.cb_object)
1328	{	1540	{
1329	dSP;	1541	dSP;
1330	int count;	1542	int count;
1331		1543
1332	ENTER; SAVETMPS; PUSHMARK (SP);	1544	ENTER; SAVETMPS;
		1545	SAVESTACK_POS ();
		1546	PUSHMARK (SP);
1333	XPUSHs (sv_2mortal (sv));	1547	XPUSHs (sv_2mortal (sv));
1334		1548
1335	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1549	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1336		1550
1337	if (count == 1)	1551	if (count == 1)
…		…
1353	DEC_DEC_DEPTH;	1567	DEC_DEC_DEPTH;
1354	return 0;	1568	return 0;
1355	}	1569	}
1356		1570
1357	static SV *	1571	static SV *
		1572	decode_tag (dec_t *dec)
		1573	{
		1574	SV *tag = 0;
		1575	SV *val = 0;
		1576
		1577	if (!(dec->json.flags & F_ALLOW_TAGS))
		1578	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1579
		1580	++dec->cur;
		1581
		1582	decode_ws (dec);
		1583
		1584	tag = decode_sv (dec);
		1585	if (!tag)
		1586	goto fail;
		1587
		1588	if (!SvPOK (tag))
		1589	ERR ("malformed JSON string, (tag) must be a string");
		1590
		1591	decode_ws (dec);
		1592
		1593	if (*dec->cur != ')')
		1594	ERR (") expected after tag");
		1595
		1596	++dec->cur;
		1597
		1598	decode_ws (dec);
		1599
		1600	val = decode_sv (dec);
		1601	if (!val)
		1602	goto fail;
		1603
		1604	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1605	ERR ("malformed JSON string, tag value must be an array");
		1606
		1607	{
		1608	AV av = (AV )SvRV (val);
		1609	int i, len = av_len (av) + 1;
		1610	HV *stash = gv_stashsv (tag, 0);
		1611	SV *sv;
		1612
		1613	if (!stash)
		1614	ERR ("cannot decode perl-object (package does not exist)");
		1615
		1616	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1617
		1618	if (!method)
		1619	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1620
		1621	dSP;
		1622
		1623	ENTER; SAVETMPS;
		1624	PUSHMARK (SP);
		1625	EXTEND (SP, len + 2);
		1626	// we re-bless the reference to get overload and other niceties right
		1627	PUSHs (tag);
		1628	PUSHs (sv_json);
		1629
		1630	for (i = 0; i < len; ++i)
		1631	PUSHs (*av_fetch (av, i, 1));
		1632
		1633	PUTBACK;
		1634	call_sv ((SV *)GvCV (method), G_SCALAR);
		1635	SPAGAIN;
		1636
		1637	SvREFCNT_dec (tag);
		1638	SvREFCNT_dec (val);
		1639	sv = SvREFCNT_inc (POPs);
		1640
		1641	PUTBACK;
		1642
		1643	FREETMPS; LEAVE;
		1644
		1645	return sv;
		1646	}
		1647
		1648	fail:
		1649	SvREFCNT_dec (tag);
		1650	SvREFCNT_dec (val);
		1651	return 0;
		1652	}
		1653
		1654	static SV *
1358	decode_sv (dec_t *dec)	1655	decode_sv (dec_t *dec)
1359	{	1656	{
1360	// the beauty of JSON: you need exactly one character lookahead	1657	// the beauty of JSON: you need exactly one character lookahead
1361	// to parse everything.	1658	// to parse everything.
1362	switch (*dec->cur)	1659	switch (*dec->cur)
1363	{	1660	{
1364	case '"': ++dec->cur; return decode_str (dec);	1661	case '"': ++dec->cur; return decode_str (dec);
1365	case '[': ++dec->cur; return decode_av (dec);	1662	case '[': ++dec->cur; return decode_av (dec);
1366	case '{': ++dec->cur; return decode_hv (dec);	1663	case '{': ++dec->cur; return decode_hv (dec);
		1664	case '(': return decode_tag (dec);
1367		1665
1368	case '-':	1666	case '-':
1369	case '0': case '1': case '2': case '3': case '4':	1667	case '0': case '1': case '2': case '3': case '4':
1370	case '5': case '6': case '7': case '8': case '9':	1668	case '5': case '6': case '7': case '8': case '9':
1371	return decode_num (dec);	1669	return decode_num (dec);
…		…
1373	case 't':	1671	case 't':
1374	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1672	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1375	{	1673	{
1376	dec->cur += 4;	1674	dec->cur += 4;
1377	#if JSON_SLOW	1675	#if JSON_SLOW
1378	json_true = get_bool ("JSON::XS::true");	1676	bool_true = get_bool ("Types::Serialiser::true");
1379	#endif	1677	#endif
1380	return newSVsv (json_true);	1678	return newSVsv (bool_true);
1381	}	1679	}
1382	else	1680	else
1383	ERR ("'true' expected");	1681	ERR ("'true' expected");
1384		1682
1385	break;	1683	break;
…		…
1387	case 'f':	1685	case 'f':
1388	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1686	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1389	{	1687	{
1390	dec->cur += 5;	1688	dec->cur += 5;
1391	#if JSON_SLOW	1689	#if JSON_SLOW
1392	json_false = get_bool ("JSON::XS::false");	1690	bool_false = get_bool ("Types::Serialiser::false");
1393	#endif	1691	#endif
1394	return newSVsv (json_false);	1692	return newSVsv (bool_false);
1395	}	1693	}
1396	else	1694	else
1397	ERR ("'false' expected");	1695	ERR ("'false' expected");
1398		1696
1399	break;	1697	break;
…		…
1408	ERR ("'null' expected");	1706	ERR ("'null' expected");
1409		1707
1410	break;	1708	break;
1411		1709
1412	default:	1710	default:
1413	ERR ("malformed JSON string, neither array, object, number, string or atom");	1711	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1414	break;	1712	break;
1415	}	1713	}
1416		1714
1417	fail:	1715	fail:
1418	return 0;	1716	return 0;
1419	}	1717	}
1420		1718
1421	static SV *	1719	static SV *
1422	decode_json (SV string, JSON json, char **offset_return)	1720	decode_json (SV string, JSON json, STRLEN *offset_return)
1423	{	1721	{
1424	dec_t dec;	1722	dec_t dec;
1425	SV *sv;	1723	SV *sv;
1426		1724
1427	/* work around bugs in 5.10 where manipulating magic values	1725	/* work around bugs in 5.10 where manipulating magic values
1428	* will perl ignore the magic in subsequent accesses	1726	* makes perl ignore the magic in subsequent accesses.
		1727	* also make a copy of non-PV values, to get them into a clean
		1728	* state (SvPV should do that, but it's buggy, see below).
		1729	*
		1730	* SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
		1731	* as reported by Reini Urban.
1429	*/	1732	*/
1430	/SvGETMAGIC (string);/	1733	/SvGETMAGIC (string);/
1431	if (SvMAGICAL (string))	1734	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
1432	string = sv_2mortal (newSVsv (string));	1735	string = sv_2mortal (newSVsv (string));
1433		1736
1434	SvUPGRADE (string, SVt_PV);	1737	SvUPGRADE (string, SVt_PV);
1435		1738
1436	/* work around a bug in perl 5.10, which causes SvCUR to fail an	1739	/* work around a bug in perl 5.10, which causes SvCUR to fail an
…		…
1453	if (offset > json->max_size && json->max_size)	1756	if (offset > json->max_size && json->max_size)
1454	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1757	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1455	(unsigned long)SvCUR (string), (unsigned long)json->max_size);	1758	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
1456	}	1759	}
1457		1760
1458	if (json->flags & F_UTF8)	1761	if (DECODE_WANTS_OCTETS (json))
1459	sv_utf8_downgrade (string, 0);	1762	sv_utf8_downgrade (string, 0);
1460	else	1763	else
1461	sv_utf8_upgrade (string);	1764	sv_utf8_upgrade (string);
1462		1765
1463	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1766	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
…		…
1475		1778
1476	decode_ws (&dec);	1779	decode_ws (&dec);
1477	sv = decode_sv (&dec);	1780	sv = decode_sv (&dec);
1478		1781
1479	if (offset_return)	1782	if (offset_return)
1480	*offset_return = dec.cur;	1783	*offset_return = dec.cur - SvPVX (string);
1481		1784	else if (sv)
1482	if (!(offset_return \|\| !sv))
1483	{	1785	{
1484	// check for trailing garbage	1786	// check for trailing garbage
1485	decode_ws (&dec);	1787	decode_ws (&dec);
1486		1788
1487	if (*dec.cur)	1789	if (*dec.cur)
…		…
1505	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1807	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1506	LEAVE;	1808	LEAVE;
1507		1809
1508	croak ("%s, at character offset %d (before \"%s\")",	1810	croak ("%s, at character offset %d (before \"%s\")",
1509	dec.err,	1811	dec.err,
1510	ptr_to_index (string, dec.cur),	1812	(int)ptr_to_index (string, dec.cur),
1511	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1813	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1512	}	1814	}
1513		1815
1514	sv = sv_2mortal (sv);	1816	sv = sv_2mortal (sv);
1515		1817
1516	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1818	if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1517	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1819	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1518		1820
1519	return sv;	1821	return sv;
1520	}	1822	}
1521		1823
…		…
1524		1826
1525	static void	1827	static void
1526	incr_parse (JSON *self)	1828	incr_parse (JSON *self)
1527	{	1829	{
1528	const char *p = SvPVX (self->incr_text) + self->incr_pos;	1830	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1831
		1832	// the state machine here is a bit convoluted and could be simplified a lot
		1833	// but this would make it slower, so...
1529		1834
1530	for (;;)	1835	for (;;)
1531	{	1836	{
1532	//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	1837	//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
1533	switch (self->incr_mode)	1838	switch (self->incr_mode)
1534	{	1839	{
1535	// only used for intiial whitespace skipping	1840	// only used for initial whitespace skipping
1536	case INCR_M_WS:	1841	case INCR_M_WS:
1537	for (;;)	1842	for (;;)
1538	{	1843	{
1539	if (*p > 0x20)	1844	if (*p > 0x20)
1540	{	1845	{
		1846	if (*p == '#')
		1847	{
		1848	self->incr_mode = INCR_M_C0;
		1849	goto incr_m_c;
		1850	}
		1851	else
		1852	{
1541	self->incr_mode = INCR_M_JSON;	1853	self->incr_mode = INCR_M_JSON;
1542	goto incr_m_json;	1854	goto incr_m_json;
		1855	}
1543	}	1856	}
1544	else if (!*p)	1857	else if (!*p)
1545	goto interrupt;	1858	goto interrupt;
1546		1859
1547	++p;	1860	++p;
…		…
1553	goto interrupt;	1866	goto interrupt;
1554		1867
1555	++p;	1868	++p;
1556	self->incr_mode = INCR_M_STR;	1869	self->incr_mode = INCR_M_STR;
1557	goto incr_m_str;	1870	goto incr_m_str;
		1871
		1872	// inside #-style comments
		1873	case INCR_M_C0:
		1874	case INCR_M_C1:
		1875	incr_m_c:
		1876	for (;;)
		1877	{
		1878	if (*p == '\n')
		1879	{
		1880	self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON;
		1881	break;
		1882	}
		1883	else if (!*p)
		1884	goto interrupt;
		1885
		1886	++p;
		1887	}
		1888
		1889	break;
1558		1890
1559	// inside a string	1891	// inside a string
1560	case INCR_M_STR:	1892	case INCR_M_STR:
1561	incr_m_str:	1893	incr_m_str:
1562	for (;;)	1894	for (;;)
…		…
1613	self->incr_mode = INCR_M_STR;	1945	self->incr_mode = INCR_M_STR;
1614	goto incr_m_str;	1946	goto incr_m_str;
1615		1947
1616	case '[':	1948	case '[':
1617	case '{':	1949	case '{':
		1950	case '(':
1618	if (++self->incr_nest > self->max_depth)	1951	if (++self->incr_nest > self->max_depth)
1619	croak (ERR_NESTING_EXCEEDED);	1952	croak (ERR_NESTING_EXCEEDED);
1620	break;	1953	break;
1621		1954
1622	case ']':	1955	case ']':
1623	case '}':	1956	case '}':
1624	if (--self->incr_nest <= 0)	1957	if (--self->incr_nest <= 0)
1625	goto interrupt;	1958	goto interrupt;
		1959	break;
		1960
		1961	case ')':
		1962	--self->incr_nest;
		1963	break;
		1964
		1965	case '#':
		1966	self->incr_mode = INCR_M_C1;
		1967	goto incr_m_c;
1626	}	1968	}
1627	}	1969	}
1628	}	1970	}
1629		1971
1630	modechange:	1972	modechange:
1631	;	1973	;
1632	}	1974	}
1633		1975
1634	interrupt:	1976	interrupt:
1635	self->incr_pos = p - SvPVX (self->incr_text);	1977	self->incr_pos = p - SvPVX (self->incr_text);
		1978	//printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D
1636	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D	1979	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
1637	}	1980	}
1638		1981
1639	/////////////////////////////////////////////////////////////////////////////	1982	/////////////////////////////////////////////////////////////////////////////
1640	// XS interface functions	1983	// XS interface functions
…		…
1650	i >= '0' && i <= '9' ? i - '0'	1993	i >= '0' && i <= '9' ? i - '0'
1651	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1994	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1652	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1995	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1653	: -1;	1996	: -1;
1654		1997
1655	json_stash = gv_stashpv ("JSON::XS" , 1);	1998	json_stash = gv_stashpv ("JSON::XS" , 1);
1656	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	1999	bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1657
1658	json_true = get_bool ("JSON::XS::true");	2000	bool_true = get_bool ("Types::Serialiser::true");
1659	json_false = get_bool ("JSON::XS::false");	2001	bool_false = get_bool ("Types::Serialiser::false");
		2002
		2003	sv_json = newSVpv ("JSON", 0);
		2004	SvREADONLY_on (sv_json);
		2005
		2006	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1660	}	2007	}
1661		2008
1662	PROTOTYPES: DISABLE	2009	PROTOTYPES: DISABLE
1663		2010
1664	void CLONE (...)	2011	void CLONE (...)
1665	CODE:	2012	CODE:
1666	json_stash = 0;	2013	json_stash = 0;
1667	json_boolean_stash = 0;	2014	bool_stash = 0;
1668		2015
1669	void new (char *klass)	2016	void new (char *klass)
1670	PPCODE:	2017	PPCODE:
1671	{	2018	{
1672	SV *pv = NEWSV (0, sizeof (JSON));	2019	SV *pv = NEWSV (0, sizeof (JSON));
1673	SvPOK_only (pv);	2020	SvPOK_only (pv);
1674	json_init ((JSON *)SvPVX (pv));	2021	json_init ((JSON *)SvPVX (pv));
1675	XPUSHs (sv_2mortal (sv_bless (	2022	XPUSHs (sv_2mortal (sv_bless (
1676	newRV_noinc (pv),	2023	newRV_noinc (pv),
1677	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	2024	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
…		…
1692	shrink = F_SHRINK	2039	shrink = F_SHRINK
1693	allow_blessed = F_ALLOW_BLESSED	2040	allow_blessed = F_ALLOW_BLESSED
1694	convert_blessed = F_CONV_BLESSED	2041	convert_blessed = F_CONV_BLESSED
1695	relaxed = F_RELAXED	2042	relaxed = F_RELAXED
1696	allow_unknown = F_ALLOW_UNKNOWN	2043	allow_unknown = F_ALLOW_UNKNOWN
		2044	allow_tags = F_ALLOW_TAGS
1697	PPCODE:	2045	PPCODE:
1698	{	2046	{
1699	if (enable)	2047	if (enable)
1700	self->flags \|= ix;	2048	self->flags \|= ix;
1701	else	2049	else
…		…
1717	get_shrink = F_SHRINK	2065	get_shrink = F_SHRINK
1718	get_allow_blessed = F_ALLOW_BLESSED	2066	get_allow_blessed = F_ALLOW_BLESSED
1719	get_convert_blessed = F_CONV_BLESSED	2067	get_convert_blessed = F_CONV_BLESSED
1720	get_relaxed = F_RELAXED	2068	get_relaxed = F_RELAXED
1721	get_allow_unknown = F_ALLOW_UNKNOWN	2069	get_allow_unknown = F_ALLOW_UNKNOWN
		2070	get_allow_tags = F_ALLOW_TAGS
1722	PPCODE:	2071	PPCODE:
1723	XPUSHs (boolSV (self->flags & ix));	2072	XPUSHs (boolSV (self->flags & ix));
1724		2073
1725	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)	2074	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1726	PPCODE:	2075	PPCODE:
…		…
1754	}	2103	}
1755		2104
1756	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2105	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1757	PPCODE:	2106	PPCODE:
1758	{	2107	{
1759	if (!self->cb_sk_object)	2108	if (!self->cb_sk_object)
1760	self->cb_sk_object = newHV ();	2109	self->cb_sk_object = newHV ();
1761		2110
1762	if (SvOK (cb))	2111	if (SvOK (cb))
1763	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2112	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1764	else	2113	else
…		…
1775	XPUSHs (ST (0));	2124	XPUSHs (ST (0));
1776	}	2125	}
1777		2126
1778	void encode (JSON self, SV scalar)	2127	void encode (JSON self, SV scalar)
1779	PPCODE:	2128	PPCODE:
1780	XPUSHs (encode_json (scalar, self));	2129	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2130	XPUSHs (scalar);
1781		2131
1782	void decode (JSON self, SV jsonstr)	2132	void decode (JSON self, SV jsonstr)
1783	PPCODE:	2133	PPCODE:
1784	XPUSHs (decode_json (jsonstr, self, 0));	2134	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2135	XPUSHs (jsonstr);
1785		2136
1786	void decode_prefix (JSON self, SV jsonstr)	2137	void decode_prefix (JSON self, SV jsonstr)
1787	PPCODE:	2138	PPCODE:
1788	{	2139	{
1789	char *offset;	2140	SV *sv;
		2141	STRLEN offset;
		2142	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1790	EXTEND (SP, 2);	2143	EXTEND (SP, 2);
1791	PUSHs (decode_json (jsonstr, self, &offset));	2144	PUSHs (sv);
1792	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));	2145	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
1793	}	2146	}
1794		2147
1795	void incr_parse (JSON self, SV jsonstr = 0)	2148	void incr_parse (JSON self, SV jsonstr = 0)
1796	PPCODE:	2149	PPCODE:
1797	{	2150	{
1798	if (!self->incr_text)	2151	if (!self->incr_text)
1799	self->incr_text = newSVpvn ("", 0);	2152	self->incr_text = newSVpvn ("", 0);
		2153
		2154	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2155	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2156	if (DECODE_WANTS_OCTETS (self))
		2157	{
		2158	if (self->incr_pos)
		2159	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2160	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2161
		2162	sv_utf8_downgrade (self->incr_text, 0);
		2163	}
		2164	else
		2165	{
		2166	sv_utf8_upgrade (self->incr_text);
		2167
		2168	if (self->incr_pos)
		2169	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2170	- (U8 *)SvPVX (self->incr_text);
		2171	}
1800		2172
1801	// append data, if any	2173	// append data, if any
1802	if (jsonstr)	2174	if (jsonstr)
1803	{	2175	{
		2176	/* make sure both strings have same encoding */
		2177	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
1804	if (SvUTF8 (jsonstr))	2178	if (SvUTF8 (jsonstr))
		2179	sv_utf8_downgrade (jsonstr, 0);
1805	{	2180	else
1806	if (!SvUTF8 (self->incr_text))
1807	{
1808	/* utf-8-ness differs, need to upgrade */
1809	sv_utf8_upgrade (self->incr_text);
1810
1811	if (self->incr_pos)
1812	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
1813	- (U8 *)SvPVX (self->incr_text);
1814	}
1815	}
1816	else if (SvUTF8 (self->incr_text))
1817	sv_utf8_upgrade (jsonstr);	2181	sv_utf8_upgrade (jsonstr);
1818		2182
		2183	/* and then just blindly append */
1819	{	2184	{
1820	STRLEN len;	2185	STRLEN len;
1821	const char *str = SvPV (jsonstr, len);	2186	const char *str = SvPV (jsonstr, len);
1822	STRLEN cur = SvCUR (self->incr_text);	2187	STRLEN cur = SvCUR (self->incr_text);
1823		2188
1824	if (SvLEN (self->incr_text) <= cur + len)	2189	if (SvLEN (self->incr_text) - cur <= len)
1825	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	2190	json_sv_grow (self->incr_text, cur, len);
1826		2191
1827	Move (str, SvEND (self->incr_text), len, char);	2192	Move (str, SvEND (self->incr_text), len, char);
1828	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);	2193	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
1829	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there	2194	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1830	}	2195	}
1831	}	2196	}
1832		2197
1833	if (GIMME_V != G_VOID)	2198	if (GIMME_V != G_VOID)
1834	do	2199	do
1835	{	2200	{
		2201	SV *sv;
1836	char *offset;	2202	STRLEN offset;
1837		2203
1838	if (!INCR_DONE (self))	2204	if (!INCR_DONE (self))
1839	{	2205	{
1840	incr_parse (self);	2206	incr_parse (self);
1841		2207
1842	if (self->incr_pos > self->max_size && self->max_size)	2208	if (self->incr_pos > self->max_size && self->max_size)
1843	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	2209	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1844	(unsigned long)self->incr_pos, (unsigned long)self->max_size);	2210	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
1845		2211
1846	if (!INCR_DONE (self))	2212	if (!INCR_DONE (self))
		2213	{
		2214	// as an optimisation, do not accumulate white space in the incr buffer
		2215	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2216	{
		2217	self->incr_pos = 0;
		2218	SvCUR_set (self->incr_text, 0);
		2219	}
		2220
1847	break;	2221	break;
		2222	}
1848	}	2223	}
1849		2224
1850	XPUSHs (decode_json (self->incr_text, self, &offset));	2225	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2226	XPUSHs (sv);
1851		2227
1852	self->incr_pos -= offset - SvPVX (self->incr_text);	2228	self->incr_pos -= offset;
1853	self->incr_nest = 0;	2229	self->incr_nest = 0;
1854	self->incr_mode = 0;	2230	self->incr_mode = 0;
1855		2231
1856	sv_chop (self->incr_text, offset);	2232	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
1857	}	2233	}
1858	while (GIMME_V == G_ARRAY);	2234	while (GIMME_V == G_ARRAY);
1859	}	2235	}
1860		2236
1861	SV incr_text (JSON self)	2237	SV incr_text (JSON self)
…		…
1899	SvREFCNT_dec (self->incr_text);	2275	SvREFCNT_dec (self->incr_text);
1900		2276
1901	PROTOTYPES: ENABLE	2277	PROTOTYPES: ENABLE
1902		2278
1903	void encode_json (SV *scalar)	2279	void encode_json (SV *scalar)
1904	ALIAS:
1905	to_json_ = 0
1906	encode_json = F_UTF8
1907	PPCODE:	2280	PPCODE:
1908	{	2281	{
1909	JSON json;	2282	JSON json;
1910	json_init (&json);	2283	json_init (&json);
1911	json.flags \|= ix;	2284	json.flags \|= F_UTF8;
1912	XPUSHs (encode_json (scalar, &json));	2285	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2286	XPUSHs (scalar);
1913	}	2287	}
1914		2288
1915	void decode_json (SV *jsonstr)	2289	void decode_json (SV *jsonstr)
1916	ALIAS:
1917	from_json_ = 0
1918	decode_json = F_UTF8
1919	PPCODE:	2290	PPCODE:
1920	{	2291	{
1921	JSON json;	2292	JSON json;
1922	json_init (&json);	2293	json_init (&json);
1923	json.flags \|= ix;	2294	json.flags \|= F_UTF8;
1924	XPUSHs (decode_json (jsonstr, &json, 0));	2295	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2296	XPUSHs (jsonstr);
1925	}	2297	}
1926		2298
1927

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Comparing JSON-XS/XS.xs (file contents): Revision 1.97 by root, Fri Jul 3 09:38:30 2009 UTC vs. Revision 1.132 by root, Tue Sep 5 13:07:09 2017 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.97 by root, Fri Jul 3 09:38:30 2009 UTC vs.
Revision 1.132 by root, Tue Sep 5 13:07:09 2017 UTC