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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.93 by root, Mon Sep 29 03:09:27 2008 UTC vs.
Revision 1.131 by root, Thu Aug 17 01:42:20 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
…		…
130	SvPV_shrink_to_cur (sv);	153	SvPV_shrink_to_cur (sv);
131	#elif defined (SvPV_renew)	154	#elif defined (SvPV_renew)
132	SvPV_renew (sv, SvCUR (sv) + 1);	155	SvPV_renew (sv, SvCUR (sv) + 1);
133	#endif	156	#endif
134	}	157	}
		158	}
		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);
135	}	183	}
136		184
137	// decode an utf-8 character and return it, or (UV)-1 in	185	// decode an 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,
…		…
175	*s++ = 0x80 \| ( ch & 0x3f);	223	*s++ = 0x80 \| ( ch & 0x3f);
176		224
177	return s;	225	return s;
178	}	226	}
179		227
		228	// convert offset pointer to character index, sv must be string
		229	static STRLEN
		230	ptr_to_index (SV sv, char offset)
		231	{
		232	return SvUTF8 (sv)
		233	? utf8_distance (offset, SvPVX (sv))
		234	: offset - SvPVX (sv);
		235	}
		236
		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
180	/////////////////////////////////////////////////////////////////////////////	375	/////////////////////////////////////////////////////////////////////////////
181	// encoder	376	// encoder
182		377
183	// structure used for encoding JSON	378	// structure used for encoding JSON
184	typedef struct	379	typedef struct
…		…
192	} enc_t;	387	} enc_t;
193		388
194	INLINE void	389	INLINE void
195	need (enc_t *enc, STRLEN len)	390	need (enc_t *enc, STRLEN len)
196	{	391	{
197	if (expect_false (enc->cur + len >= enc->end))	392	if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
198	{	393	{
199	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	394	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
200	SvGROW (enc->sv, cur + len + 1);	395	char *buf = json_sv_grow (enc->sv, cur, len);
201	enc->cur = SvPVX (enc->sv) + cur;	396	enc->cur = buf + cur;
202	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	397	enc->end = buf + SvLEN (enc->sv) - 1;
203	}	398	}
204	}	399	}
205		400
206	INLINE void	401	INLINE void
207	encode_ch (enc_t *enc, char ch)	402	encode_ch (enc_t *enc, char ch)
…		…
223		418
224	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case	419	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
225	{	420	{
226	if (expect_false (ch == '"')) // but with slow exceptions	421	if (expect_false (ch == '"')) // but with slow exceptions
227	{	422	{
228	need (enc, len += 1);	423	need (enc, len + 1);
229	*enc->cur++ = '\\';	424	*enc->cur++ = '\\';
230	*enc->cur++ = '"';	425	*enc->cur++ = '"';
231	}	426	}
232	else if (expect_false (ch == '\\'))	427	else if (expect_false (ch == '\\'))
233	{	428	{
234	need (enc, len += 1);	429	need (enc, len + 1);
235	*enc->cur++ = '\\';	430	*enc->cur++ = '\\';
236	*enc->cur++ = '\\';	431	*enc->cur++ = '\\';
237	}	432	}
238	else	433	else
239	*enc->cur++ = ch;	434	*enc->cur++ = ch;
…		…
242	}	437	}
243	else	438	else
244	{	439	{
245	switch (ch)	440	switch (ch)
246	{	441	{
247	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;
248	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;
249	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;
250	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;
251	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;
252		447
253	default:	448	default:
254	{	449	{
255	STRLEN clen;	450	STRLEN clen;
256	UV uch;	451	UV uch;
…		…
272	if (uch >= 0x10000UL)	467	if (uch >= 0x10000UL)
273	{	468	{
274	if (uch >= 0x110000UL)	469	if (uch >= 0x110000UL)
275	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);
276		471
277	need (enc, len += 11);	472	need (enc, len + 11);
278	sprintf (enc->cur, "\\u%04x\\u%04x",	473	sprintf (enc->cur, "\\u%04x\\u%04x",
279	(int)((uch - 0x10000) / 0x400 + 0xD800),	474	(int)((uch - 0x10000) / 0x400 + 0xD800),
280	(int)((uch - 0x10000) % 0x400 + 0xDC00));	475	(int)((uch - 0x10000) % 0x400 + 0xDC00));
281	enc->cur += 12;	476	enc->cur += 12;
282	}	477	}
283	else	478	else
284	{	479	{
285	need (enc, len += 5);	480	need (enc, len + 5);
286	*enc->cur++ = '\\';	481	*enc->cur++ = '\\';
287	*enc->cur++ = 'u';	482	*enc->cur++ = 'u';
288	*enc->cur++ = PL_hexdigit [ uch >> 12 ];	483	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
289	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];	484	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
290	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];	485	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
…		…
298	*enc->cur++ = uch;	493	*enc->cur++ = uch;
299	str += clen;	494	str += clen;
300	}	495	}
301	else if (is_utf8)	496	else if (is_utf8)
302	{	497	{
303	need (enc, len += clen);	498	need (enc, len + clen);
304	do	499	do
305	{	500	{
306	enc->cur++ = str++;	501	enc->cur++ = str++;
307	}	502	}
308	while (--clen);	503	while (--clen);
309	}	504	}
310	else	505	else
311	{	506	{
312	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
313	enc->cur = encode_utf8 (enc->cur, uch);	508	enc->cur = encode_utf8 (enc->cur, uch);
314	++str;	509	++str;
315	}	510	}
316	}	511	}
317	}	512	}
…		…
371		566
372	if (enc->indent >= enc->json.max_depth)	567	if (enc->indent >= enc->json.max_depth)
373	croak (ERR_NESTING_EXCEEDED);	568	croak (ERR_NESTING_EXCEEDED);
374		569
375	encode_ch (enc, '[');	570	encode_ch (enc, '[');
376		571
377	if (len >= 0)	572	if (len >= 0)
378	{	573	{
379	encode_nl (enc); ++enc->indent;	574	encode_nl (enc); ++enc->indent;
380		575
381	for (i = 0; i <= len; ++i)	576	for (i = 0; i <= len; ++i)
…		…
393	encode_comma (enc);	588	encode_comma (enc);
394	}	589	}
395		590
396	encode_nl (enc); --enc->indent; encode_indent (enc);	591	encode_nl (enc); --enc->indent; encode_indent (enc);
397	}	592	}
398		593
399	encode_ch (enc, ']');	594	encode_ch (enc, ']');
400	}	595	}
401		596
402	static void	597	static void
403	encode_hk (enc_t enc, HE he)	598	encode_hk (enc_t enc, HE he)
…		…
407	if (HeKLEN (he) == HEf_SVKEY)	602	if (HeKLEN (he) == HEf_SVKEY)
408	{	603	{
409	SV *sv = HeSVKEY (he);	604	SV *sv = HeSVKEY (he);
410	STRLEN len;	605	STRLEN len;
411	char *str;	606	char *str;
412		607
413	SvGETMAGIC (sv);	608	SvGETMAGIC (sv);
414	str = SvPV (sv, len);	609	str = SvPV (sv, len);
415		610
416	encode_str (enc, str, len, SvUTF8 (sv));	611	encode_str (enc, str, len, SvUTF8 (sv));
417	}	612	}
…		…
462		657
463	// for canonical output we have to sort by keys first	658	// for canonical output we have to sort by keys first
464	// actually, this is mostly due to the stupid so-called	659	// actually, this is mostly due to the stupid so-called
465	// security workaround added somewhere in 5.8.x	660	// security workaround added somewhere in 5.8.x
466	// that randomises hash orderings	661	// that randomises hash orderings
467	if (enc->json.flags & F_CANONICAL)	662	if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv))
468	{	663	{
469	int count = hv_iterinit (hv);	664	int count = hv_iterinit (hv);
470		665
471	if (SvMAGICAL (hv))	666	if (SvMAGICAL (hv))
472	{	667	{
…		…
483	}	678	}
484		679
485	if (count)	680	if (count)
486	{	681	{
487	int i, fast = 1;	682	int i, fast = 1;
488	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	683	HE *hes_stack [STACK_HES];
489	HE *hes = _alloca (count sizeof (HE));	684	HE **hes = hes_stack;
490	#else	685
491	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	686	// allocate larger arrays on the heap
492	#endif	687	if (count > STACK_HES)
		688	{
		689	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		690	hes = (HE **)SvPVX (sv);
		691	}
493		692
494	i = 0;	693	i = 0;
495	while ((he = hv_iternext (hv)))	694	while ((he = hv_iternext (hv)))
496	{	695	{
497	hes [i++] = he;	696	hes [i++] = he;
…		…
566	// encode objects, arrays and special \0=false and \1=true values.	765	// encode objects, arrays and special \0=false and \1=true values.
567	static void	766	static void
568	encode_rv (enc_t enc, SV sv)	767	encode_rv (enc_t enc, SV sv)
569	{	768	{
570	svtype svt;	769	svtype svt;
		770	GV *method;
571		771
572	SvGETMAGIC (sv);	772	SvGETMAGIC (sv);
573	svt = SvTYPE (sv);	773	svt = SvTYPE (sv);
574		774
575	if (expect_false (SvOBJECT (sv)))	775	if (expect_false (SvOBJECT (sv)))
576	{	776	{
577	HV *stash = !JSON_SLOW \|\| json_boolean_stash	777	HV *stash = SvSTASH (sv);
578	? json_boolean_stash
579	: gv_stashpv ("JSON::XS::Boolean", 1);
580		778
581	if (SvSTASH (sv) == stash)	779	if (stash == bool_stash)
582	{	780	{
583	if (SvIV (sv))	781	if (SvIV (sv))
584	encode_str (enc, "true", 4, 0);	782	encode_str (enc, "true", 4, 0);
585	else	783	else
586	encode_str (enc, "false", 5, 0);	784	encode_str (enc, "false", 5, 0);
587	}	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);
588	else	853	else
589	{
590	#if 0
591	if (0 && sv_derived_from (rv, "JSON::Literal"))
592	{
593	// not yet
594	}
595	#endif
596	if (enc->json.flags & F_CONV_BLESSED)
597	{
598	// we re-bless the reference to get overload and other niceties right
599	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
600
601	if (to_json)
602	{
603	dSP;
604
605	ENTER; SAVETMPS; PUSHMARK (SP);
606	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
607
608	// calling with G_SCALAR ensures that we always get a 1 return value
609	PUTBACK;
610	call_sv ((SV *)GvCV (to_json), G_SCALAR);
611	SPAGAIN;
612
613	// catch this surprisingly common error
614	if (SvROK (TOPs) && SvRV (TOPs) == sv)
615	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
616
617	sv = POPs;
618	PUTBACK;
619
620	encode_sv (enc, sv);
621
622	FREETMPS; LEAVE;
623	}
624	else if (enc->json.flags & F_ALLOW_BLESSED)
625	encode_str (enc, "null", 4, 0);
626	else
627	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
628	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
629	}
630	else if (enc->json.flags & F_ALLOW_BLESSED)
631	encode_str (enc, "null", 4, 0);
632	else
633	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)",
634	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	855	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
635	}
636	}	856	}
637	else if (svt == SVt_PVHV)	857	else if (svt == SVt_PVHV)
638	encode_hv (enc, (HV *)sv);	858	encode_hv (enc, (HV *)sv);
639	else if (svt == SVt_PVAV)	859	else if (svt == SVt_PVAV)
640	encode_av (enc, (AV *)sv);	860	encode_av (enc, (AV *)sv);
641	else if (svt < SVt_PVAV)	861	else if (svt < SVt_PVAV)
642	{	862	{
643	STRLEN len = 0;	863	int bool_type = ref_bool_type (sv);
644	char *pv = svt ? SvPV (sv, len) : 0;
645		864
646	if (len == 1 && *pv == '1')	865	if (bool_type == 1)
647	encode_str (enc, "true", 4, 0);	866	encode_str (enc, "true", 4, 0);
648	else if (len == 1 && *pv == '0')	867	else if (bool_type == 0)
649	encode_str (enc, "false", 5, 0);	868	encode_str (enc, "false", 5, 0);
650	else if (enc->json.flags & F_ALLOW_UNKNOWN)	869	else if (enc->json.flags & F_ALLOW_UNKNOWN)
651	encode_str (enc, "null", 4, 0);	870	encode_str (enc, "null", 4, 0);
652	else	871	else
653	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",
…		…
716	}	935	}
717	else	936	else
718	{	937	{
719	// large integer, use the (rather slow) snprintf way.	938	// large integer, use the (rather slow) snprintf way.
720	need (enc, IVUV_MAXCHARS);	939	need (enc, IVUV_MAXCHARS);
721	enc->cur +=	940	enc->cur +=
722	SvIsUV(sv)	941	SvIsUV(sv)
723	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	942	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
724	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	943	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
725	}	944	}
726	}	945	}
727	else if (SvROK (sv))	946	else if (SvROK (sv))
728	encode_rv (enc, SvRV (sv));	947	encode_rv (enc, SvRV (sv));
729	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)	948	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
730	encode_str (enc, "null", 4, 0);	949	encode_str (enc, "null", 4, 0);
731	else	950	else
732	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",
733	SvPV_nolen (sv), SvFLAGS (sv));	952	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
734	}	953	}
735		954
736	static SV *	955	static SV *
737	encode_json (SV scalar, JSON json)	956	encode_json (SV scalar, JSON json)
738	{	957	{
739	enc_t enc;	958	enc_t enc;
740		959
741	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	960	if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
742	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)");
743		962
744	enc.json = *json;	963	enc.json = *json;
745	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	964	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
746	enc.cur = SvPVX (enc.sv);	965	enc.cur = SvPVX (enc.sv);
…		…
750	: enc.json.flags & F_LATIN1 ? 0x000100UL	969	: enc.json.flags & F_LATIN1 ? 0x000100UL
751	: 0x110000UL;	970	: 0x110000UL;
752		971
753	SvPOK_only (enc.sv);	972	SvPOK_only (enc.sv);
754	encode_sv (&enc, scalar);	973	encode_sv (&enc, scalar);
		974	encode_nl (&enc);
755		975
756	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	976	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
757	*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
758		978
759	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	979	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
…		…
939	else if (expect_true (ch >= 0x20 && ch < 0x80))	1159	else if (expect_true (ch >= 0x20 && ch < 0x80))
940	*cur++ = ch;	1160	*cur++ = ch;
941	else if (ch >= 0x80)	1161	else if (ch >= 0x80)
942	{	1162	{
943	STRLEN clen;	1163	STRLEN clen;
944	UV uch;
945		1164
946	--dec_cur;	1165	--dec_cur;
947		1166
948	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);	1167	decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
949	if (clen == (STRLEN)-1)	1168	if (clen == (STRLEN)-1)
950	ERR ("malformed UTF-8 character in JSON string");	1169	ERR ("malformed UTF-8 character in JSON string");
951		1170
952	do	1171	do
953	cur++ = dec_cur++;	1172	cur++ = dec_cur++;
954	while (--clen);	1173	while (--clen);
955		1174
956	utf8 = 1;	1175	utf8 = 1;
957	}	1176	}
		1177	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1178	*cur++ = ch;
958	else	1179	else
959	{	1180	{
960	--dec_cur;	1181	--dec_cur;
961		1182
962	if (!ch)	1183	if (!ch)
…		…
970	{	1191	{
971	STRLEN len = cur - buf;	1192	STRLEN len = cur - buf;
972		1193
973	if (sv)	1194	if (sv)
974	{	1195	{
975	SvGROW (sv, SvCUR (sv) + len + 1);	1196	STRLEN cur = SvCUR (sv);
		1197
		1198	if (SvLEN (sv) - cur <= len)
		1199	json_sv_grow (sv, cur, len);
		1200
976	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1201	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
977	SvCUR_set (sv, SvCUR (sv) + len);	1202	SvCUR_set (sv, SvCUR (sv) + len);
978	}	1203	}
979	else	1204	else
980	sv = newSVpvn (buf, len);	1205	sv = newSVpvn (buf, len);
…		…
1071		1296
1072	// special case the rather common 1..5-digit-int case	1297	// special case the rather common 1..5-digit-int case
1073	if (*start == '-')	1298	if (*start == '-')
1074	switch (len)	1299	switch (len)
1075	{	1300	{
1076	case 2: return newSViv (-( start [1] - '0' * 1));	1301	case 2: return newSViv (-(IV)( start [1] - '0' * 1));
1077	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	1302	case 3: return newSViv (-(IV)( start [1] * 10 + start [2] - '0' * 11));
1078	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));	1303	case 4: return newSViv (-(IV)( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
1079	case 5: return newSViv (-( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));	1304	case 5: return newSViv (-(IV)( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
1080	case 6: return newSViv (-(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));	1305	case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));
1081	}	1306	}
1082	else	1307	else
1083	switch (len)	1308	switch (len)
1084	{	1309	{
1085	case 1: return newSViv ( start [0] - '0' * 1);	1310	case 1: return newSViv ( start [0] - '0' * 1);
1086	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	1311	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
1087	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);	1312	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
1088	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);	1313	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
1089	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);	1314	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);
1090	}	1315	}
1091		1316
1092	{	1317	{
1093	UV uv;	1318	UV uv;
1094	int numtype = grok_number (start, len, &uv);	1319	int numtype = grok_number (start, len, &uv);
…		…
1103	}	1328	}
1104		1329
1105	len -= *start == '-' ? 1 : 0;	1330	len -= *start == '-' ? 1 : 0;
1106		1331
1107	// does not fit into IV or UV, try NV	1332	// does not fit into IV or UV, try NV
1108	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1333	if (len <= NV_DIG)
1109	#if defined (LDBL_DIG)
1110	\|\| (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
1111	#endif
1112	)
1113	// fits into NV without loss of precision	1334	// fits into NV without loss of precision
1114	return newSVnv (Atof (start));	1335	return newSVnv (json_atof (start));
1115		1336
1116	// everything else fails, convert it to a string	1337	// everything else fails, convert it to a string
1117	return newSVpvn (start, dec->cur - start);	1338	return newSVpvn (start, dec->cur - start);
1118	}	1339	}
1119		1340
1120	// loss of precision here	1341	// loss of precision here
1121	return newSVnv (Atof (start));	1342	return newSVnv (json_atof (start));
1122		1343
1123	fail:	1344	fail:
1124	return 0;	1345	return 0;
1125	}	1346	}
1126		1347
…		…
1150	if (*dec->cur == ']')	1371	if (*dec->cur == ']')
1151	{	1372	{
1152	++dec->cur;	1373	++dec->cur;
1153	break;	1374	break;
1154	}	1375	}
1155		1376
1156	if (*dec->cur != ',')	1377	if (*dec->cur != ',')
1157	ERR (", or ] expected while parsing array");	1378	ERR (", or ] expected while parsing array");
1158		1379
1159	++dec->cur;	1380	++dec->cur;
1160		1381
…		…
1284		1505
1285	hv_iterinit (hv);	1506	hv_iterinit (hv);
1286	he = hv_iternext (hv);	1507	he = hv_iternext (hv);
1287	hv_iterinit (hv);	1508	hv_iterinit (hv);
1288		1509
1289	// the next line creates a mortal sv each time its called.	1510	// the next line creates a mortal sv each time it's called.
1290	// might want to optimise this for common cases.	1511	// might want to optimise this for common cases.
1291	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);
1292		1513
1293	if (cb)	1514	if (cb)
1294	{	1515	{
1295	dSP;	1516	dSP;
1296	int count;	1517	int count;
1297		1518
1298	ENTER; SAVETMPS; PUSHMARK (SP);	1519	ENTER; SAVETMPS;
		1520	SAVESTACK_POS ();
		1521	PUSHMARK (SP);
1299	XPUSHs (HeVAL (he));	1522	XPUSHs (HeVAL (he));
		1523	sv_2mortal (sv);
1300		1524
1301	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1525	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1302		1526
1303	if (count == 1)	1527	if (count == 1)
1304	{	1528	{
1305	sv = newSVsv (POPs);	1529	sv = newSVsv (POPs);
1306	FREETMPS; LEAVE;	1530	FREETMPS; LEAVE;
1307	return sv;	1531	return sv;
1308	}	1532	}
1309		1533
		1534	SvREFCNT_inc (sv);
1310	FREETMPS; LEAVE;	1535	FREETMPS; LEAVE;
1311	}	1536	}
1312	}	1537	}
1313		1538
1314	if (dec->json.cb_object)	1539	if (dec->json.cb_object)
1315	{	1540	{
1316	dSP;	1541	dSP;
1317	int count;	1542	int count;
1318		1543
1319	ENTER; SAVETMPS; PUSHMARK (SP);	1544	ENTER; SAVETMPS;
		1545	SAVESTACK_POS ();
		1546	PUSHMARK (SP);
1320	XPUSHs (sv_2mortal (sv));	1547	XPUSHs (sv_2mortal (sv));
1321		1548
1322	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1549	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1323		1550
1324	if (count == 1)	1551	if (count == 1)
…		…
1340	DEC_DEC_DEPTH;	1567	DEC_DEC_DEPTH;
1341	return 0;	1568	return 0;
1342	}	1569	}
1343		1570
1344	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 *
1345	decode_sv (dec_t *dec)	1655	decode_sv (dec_t *dec)
1346	{	1656	{
1347	// the beauty of JSON: you need exactly one character lookahead	1657	// the beauty of JSON: you need exactly one character lookahead
1348	// to parse everything.	1658	// to parse everything.
1349	switch (*dec->cur)	1659	switch (*dec->cur)
1350	{	1660	{
1351	case '"': ++dec->cur; return decode_str (dec);	1661	case '"': ++dec->cur; return decode_str (dec);
1352	case '[': ++dec->cur; return decode_av (dec);	1662	case '[': ++dec->cur; return decode_av (dec);
1353	case '{': ++dec->cur; return decode_hv (dec);	1663	case '{': ++dec->cur; return decode_hv (dec);
		1664	case '(': return decode_tag (dec);
1354		1665
1355	case '-':	1666	case '-':
1356	case '0': case '1': case '2': case '3': case '4':	1667	case '0': case '1': case '2': case '3': case '4':
1357	case '5': case '6': case '7': case '8': case '9':	1668	case '5': case '6': case '7': case '8': case '9':
1358	return decode_num (dec);	1669	return decode_num (dec);
…		…
1360	case 't':	1671	case 't':
1361	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1672	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1362	{	1673	{
1363	dec->cur += 4;	1674	dec->cur += 4;
1364	#if JSON_SLOW	1675	#if JSON_SLOW
1365	json_true = get_bool ("JSON::XS::true");	1676	bool_true = get_bool ("Types::Serialiser::true");
1366	#endif	1677	#endif
1367	return newSVsv (json_true);	1678	return newSVsv (bool_true);
1368	}	1679	}
1369	else	1680	else
1370	ERR ("'true' expected");	1681	ERR ("'true' expected");
1371		1682
1372	break;	1683	break;
…		…
1374	case 'f':	1685	case 'f':
1375	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1686	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1376	{	1687	{
1377	dec->cur += 5;	1688	dec->cur += 5;
1378	#if JSON_SLOW	1689	#if JSON_SLOW
1379	json_false = get_bool ("JSON::XS::false");	1690	bool_false = get_bool ("Types::Serialiser::false");
1380	#endif	1691	#endif
1381	return newSVsv (json_false);	1692	return newSVsv (bool_false);
1382	}	1693	}
1383	else	1694	else
1384	ERR ("'false' expected");	1695	ERR ("'false' expected");
1385		1696
1386	break;	1697	break;
…		…
1395	ERR ("'null' expected");	1706	ERR ("'null' expected");
1396		1707
1397	break;	1708	break;
1398		1709
1399	default:	1710	default:
1400	ERR ("malformed JSON string, neither array, object, number, string or atom");	1711	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1401	break;	1712	break;
1402	}	1713	}
1403		1714
1404	fail:	1715	fail:
1405	return 0;	1716	return 0;
…		…
1407		1718
1408	static SV *	1719	static SV *
1409	decode_json (SV string, JSON json, STRLEN *offset_return)	1720	decode_json (SV string, JSON json, STRLEN *offset_return)
1410	{	1721	{
1411	dec_t dec;	1722	dec_t dec;
1412	STRLEN offset;
1413	SV *sv;	1723	SV *sv;
1414		1724
		1725	/* work around bugs in 5.10 where manipulating magic values
		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.
		1732	*/
1415	SvGETMAGIC (string);	1733	/SvGETMAGIC (string);/
		1734	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
		1735	string = sv_2mortal (newSVsv (string));
		1736
1416	SvUPGRADE (string, SVt_PV);	1737	SvUPGRADE (string, SVt_PV);
1417		1738
1418	/* 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
1419	* assertion with -DDEBUGGING, although SvCUR is documented to	1740	* assertion with -DDEBUGGING, although SvCUR is documented to
1420	* return the xpv_cur field which certainly exists after upgrading.	1741	* return the xpv_cur field which certainly exists after upgrading.
…		…
1423	* and hope for the best.	1744	* and hope for the best.
1424	* Damnit, SvPV_nolen still trips over yet another assertion. This	1745	* Damnit, SvPV_nolen still trips over yet another assertion. This
1425	* assertion business is seriously broken, try yet another workaround	1746	* assertion business is seriously broken, try yet another workaround
1426	* for the broken -DDEBUGGING.	1747	* for the broken -DDEBUGGING.
1427	*/	1748	*/
		1749	{
1428	#ifdef DEBUGGING	1750	#ifdef DEBUGGING
1429	offset = SvOK (string) ? sv_len (string) : 0;	1751	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
1430	#else	1752	#else
1431	offset = SvCUR (string);	1753	STRLEN offset = SvCUR (string);
1432	#endif	1754	#endif
1433		1755
1434	if (offset > json->max_size && json->max_size)	1756	if (offset > json->max_size && json->max_size)
1435	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",
1436	(unsigned long)SvCUR (string), (unsigned long)json->max_size);	1758	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
		1759	}
1437		1760
1438	if (json->flags & F_UTF8)	1761	if (DECODE_WANTS_OCTETS (json))
1439	sv_utf8_downgrade (string, 0);	1762	sv_utf8_downgrade (string, 0);
1440	else	1763	else
1441	sv_utf8_upgrade (string);	1764	sv_utf8_upgrade (string);
1442		1765
1443	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1766	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
…		…
1454	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1777	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
1455		1778
1456	decode_ws (&dec);	1779	decode_ws (&dec);
1457	sv = decode_sv (&dec);	1780	sv = decode_sv (&dec);
1458		1781
1459	if (!(offset_return \|\| !sv))	1782	if (offset_return)
		1783	*offset_return = dec.cur - SvPVX (string);
		1784	else if (sv)
1460	{	1785	{
1461	// check for trailing garbage	1786	// check for trailing garbage
1462	decode_ws (&dec);	1787	decode_ws (&dec);
1463		1788
1464	if (*dec.cur)	1789	if (*dec.cur)
1465	{	1790	{
1466	dec.err = "garbage after JSON object";	1791	dec.err = "garbage after JSON object";
1467	SvREFCNT_dec (sv);	1792	SvREFCNT_dec (sv);
1468	sv = 0;	1793	sv = 0;
1469	}	1794	}
1470	}
1471
1472	if (offset_return \|\| !sv)
1473	{
1474	offset = dec.json.flags & F_UTF8
1475	? dec.cur - SvPVX (string)
1476	: utf8_distance (dec.cur, SvPVX (string));
1477
1478	if (offset_return)
1479	*offset_return = offset;
1480	}	1795	}
1481		1796
1482	if (!sv)	1797	if (!sv)
1483	{	1798	{
1484	SV *uni = sv_newmortal ();	1799	SV *uni = sv_newmortal ();
…		…
1490	SAVEVPTR (PL_curcop);	1805	SAVEVPTR (PL_curcop);
1491	PL_curcop = &cop;	1806	PL_curcop = &cop;
1492	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);
1493	LEAVE;	1808	LEAVE;
1494		1809
1495	croak ("%s, at character offset %d [\"%s\"]",	1810	croak ("%s, at character offset %d (before \"%s\")",
1496	dec.err,	1811	dec.err,
1497	(int)offset,	1812	(int)ptr_to_index (string, dec.cur),
1498	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1813	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1499	}	1814	}
1500		1815
1501	sv = sv_2mortal (sv);	1816	sv = sv_2mortal (sv);
1502		1817
1503	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1818	if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1504	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)");
1505		1820
1506	return sv;	1821	return sv;
1507	}	1822	}
1508		1823
…		…
1511		1826
1512	static void	1827	static void
1513	incr_parse (JSON *self)	1828	incr_parse (JSON *self)
1514	{	1829	{
1515	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...
1516		1834
1517	for (;;)	1835	for (;;)
1518	{	1836	{
1519	//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
1520	switch (self->incr_mode)	1838	switch (self->incr_mode)
1521	{	1839	{
1522	// only used for intiial whitespace skipping	1840	// only used for initial whitespace skipping
1523	case INCR_M_WS:	1841	case INCR_M_WS:
1524	for (;;)	1842	for (;;)
1525	{	1843	{
1526	if (*p > 0x20)	1844	if (*p > 0x20)
1527	{	1845	{
		1846	if (*p == '#')
		1847	{
		1848	self->incr_mode = INCR_M_C0;
		1849	goto incr_m_c;
		1850	}
		1851	else
		1852	{
1528	self->incr_mode = INCR_M_JSON;	1853	self->incr_mode = INCR_M_JSON;
1529	goto incr_m_json;	1854	goto incr_m_json;
		1855	}
1530	}	1856	}
1531	else if (!*p)	1857	else if (!*p)
1532	goto interrupt;	1858	goto interrupt;
1533		1859
1534	++p;	1860	++p;
…		…
1540	goto interrupt;	1866	goto interrupt;
1541		1867
1542	++p;	1868	++p;
1543	self->incr_mode = INCR_M_STR;	1869	self->incr_mode = INCR_M_STR;
1544	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;
1545		1890
1546	// inside a string	1891	// inside a string
1547	case INCR_M_STR:	1892	case INCR_M_STR:
1548	incr_m_str:	1893	incr_m_str:
1549	for (;;)	1894	for (;;)
…		…
1600	self->incr_mode = INCR_M_STR;	1945	self->incr_mode = INCR_M_STR;
1601	goto incr_m_str;	1946	goto incr_m_str;
1602		1947
1603	case '[':	1948	case '[':
1604	case '{':	1949	case '{':
		1950	case '(':
1605	if (++self->incr_nest > self->max_depth)	1951	if (++self->incr_nest > self->max_depth)
1606	croak (ERR_NESTING_EXCEEDED);	1952	croak (ERR_NESTING_EXCEEDED);
1607	break;	1953	break;
1608		1954
1609	case ']':	1955	case ']':
1610	case '}':	1956	case '}':
1611	if (--self->incr_nest <= 0)	1957	if (--self->incr_nest <= 0)
1612	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;
1613	}	1968	}
1614	}	1969	}
1615	}	1970	}
1616		1971
1617	modechange:	1972	modechange:
1618	;	1973	;
1619	}	1974	}
1620		1975
1621	interrupt:	1976	interrupt:
1622	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
1623	//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
1624	}	1980	}
1625		1981
1626	/////////////////////////////////////////////////////////////////////////////	1982	/////////////////////////////////////////////////////////////////////////////
1627	// XS interface functions	1983	// XS interface functions
…		…
1637	i >= '0' && i <= '9' ? i - '0'	1993	i >= '0' && i <= '9' ? i - '0'
1638	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1994	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1639	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1995	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1640	: -1;	1996	: -1;
1641		1997
1642	json_stash = gv_stashpv ("JSON::XS" , 1);	1998	json_stash = gv_stashpv ("JSON::XS" , 1);
1643	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	1999	bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1644
1645	json_true = get_bool ("JSON::XS::true");	2000	bool_true = get_bool ("Types::Serialiser::true");
1646	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 */
1647	}	2007	}
1648		2008
1649	PROTOTYPES: DISABLE	2009	PROTOTYPES: DISABLE
1650		2010
1651	void CLONE (...)	2011	void CLONE (...)
1652	CODE:	2012	CODE:
1653	json_stash = 0;	2013	json_stash = 0;
1654	json_boolean_stash = 0;	2014	bool_stash = 0;
1655		2015
1656	void new (char *klass)	2016	void new (char *klass)
1657	PPCODE:	2017	PPCODE:
1658	{	2018	{
1659	SV *pv = NEWSV (0, sizeof (JSON));	2019	SV *pv = NEWSV (0, sizeof (JSON));
1660	SvPOK_only (pv);	2020	SvPOK_only (pv);
1661	json_init ((JSON *)SvPVX (pv));	2021	json_init ((JSON *)SvPVX (pv));
1662	XPUSHs (sv_2mortal (sv_bless (	2022	XPUSHs (sv_2mortal (sv_bless (
1663	newRV_noinc (pv),	2023	newRV_noinc (pv),
1664	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	2024	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
…		…
1679	shrink = F_SHRINK	2039	shrink = F_SHRINK
1680	allow_blessed = F_ALLOW_BLESSED	2040	allow_blessed = F_ALLOW_BLESSED
1681	convert_blessed = F_CONV_BLESSED	2041	convert_blessed = F_CONV_BLESSED
1682	relaxed = F_RELAXED	2042	relaxed = F_RELAXED
1683	allow_unknown = F_ALLOW_UNKNOWN	2043	allow_unknown = F_ALLOW_UNKNOWN
		2044	allow_tags = F_ALLOW_TAGS
1684	PPCODE:	2045	PPCODE:
1685	{	2046	{
1686	if (enable)	2047	if (enable)
1687	self->flags \|= ix;	2048	self->flags \|= ix;
1688	else	2049	else
…		…
1704	get_shrink = F_SHRINK	2065	get_shrink = F_SHRINK
1705	get_allow_blessed = F_ALLOW_BLESSED	2066	get_allow_blessed = F_ALLOW_BLESSED
1706	get_convert_blessed = F_CONV_BLESSED	2067	get_convert_blessed = F_CONV_BLESSED
1707	get_relaxed = F_RELAXED	2068	get_relaxed = F_RELAXED
1708	get_allow_unknown = F_ALLOW_UNKNOWN	2069	get_allow_unknown = F_ALLOW_UNKNOWN
		2070	get_allow_tags = F_ALLOW_TAGS
1709	PPCODE:	2071	PPCODE:
1710	XPUSHs (boolSV (self->flags & ix));	2072	XPUSHs (boolSV (self->flags & ix));
1711		2073
1712	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)	2074	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1713	PPCODE:	2075	PPCODE:
…		…
1741	}	2103	}
1742		2104
1743	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)
1744	PPCODE:	2106	PPCODE:
1745	{	2107	{
1746	if (!self->cb_sk_object)	2108	if (!self->cb_sk_object)
1747	self->cb_sk_object = newHV ();	2109	self->cb_sk_object = newHV ();
1748		2110
1749	if (SvOK (cb))	2111	if (SvOK (cb))
1750	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2112	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1751	else	2113	else
…		…
1762	XPUSHs (ST (0));	2124	XPUSHs (ST (0));
1763	}	2125	}
1764		2126
1765	void encode (JSON self, SV scalar)	2127	void encode (JSON self, SV scalar)
1766	PPCODE:	2128	PPCODE:
1767	XPUSHs (encode_json (scalar, self));	2129	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2130	XPUSHs (scalar);
1768		2131
1769	void decode (JSON self, SV jsonstr)	2132	void decode (JSON self, SV jsonstr)
1770	PPCODE:	2133	PPCODE:
1771	XPUSHs (decode_json (jsonstr, self, 0));	2134	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2135	XPUSHs (jsonstr);
1772		2136
1773	void decode_prefix (JSON self, SV jsonstr)	2137	void decode_prefix (JSON self, SV jsonstr)
1774	PPCODE:	2138	PPCODE:
1775	{	2139	{
		2140	SV *sv;
1776	STRLEN offset;	2141	STRLEN offset;
		2142	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1777	EXTEND (SP, 2);	2143	EXTEND (SP, 2);
1778	PUSHs (decode_json (jsonstr, self, &offset));	2144	PUSHs (sv);
1779	PUSHs (sv_2mortal (newSVuv (offset)));	2145	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
1780	}	2146	}
1781		2147
1782	void incr_parse (JSON self, SV jsonstr = 0)	2148	void incr_parse (JSON self, SV jsonstr = 0)
1783	PPCODE:	2149	PPCODE:
1784	{	2150	{
1785	if (!self->incr_text)	2151	if (!self->incr_text)
1786	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	}
1787		2172
1788	// append data, if any	2173	// append data, if any
1789	if (jsonstr)	2174	if (jsonstr)
1790	{	2175	{
		2176	/* make sure both strings have same encoding */
1791	if (SvUTF8 (jsonstr) && !SvUTF8 (self->incr_text))	2177	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
		2178	if (SvUTF8 (jsonstr))
		2179	sv_utf8_downgrade (jsonstr, 0);
1792	{	2180	else
1793	/* utf-8-ness differs, need to upgrade */
1794	sv_utf8_upgrade (self->incr_text);	2181	sv_utf8_upgrade (jsonstr);
1795		2182
1796	if (self->incr_pos)	2183	/* and then just blindly append */
1797	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
1798	- (U8 *)SvPVX (self->incr_text);
1799	}
1800
1801	{	2184	{
1802	STRLEN len;	2185	STRLEN len;
1803	const char *str = SvPV (jsonstr, len);	2186	const char *str = SvPV (jsonstr, len);
1804	SvGROW (self->incr_text, SvCUR (self->incr_text) + len + 1);	2187	STRLEN cur = SvCUR (self->incr_text);
		2188
		2189	if (SvLEN (self->incr_text) - cur <= len)
		2190	json_sv_grow (self->incr_text, cur, len);
		2191
1805	Move (str, SvEND (self->incr_text), len, char);	2192	Move (str, SvEND (self->incr_text), len, char);
1806	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);	2193	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
1807	*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
1808	}	2195	}
1809	}	2196	}
1810		2197
1811	if (GIMME_V != G_VOID)	2198	if (GIMME_V != G_VOID)
1812	do	2199	do
1813	{	2200	{
		2201	SV *sv;
1814	STRLEN offset;	2202	STRLEN offset;
1815		2203
1816	if (!INCR_DONE (self))	2204	if (!INCR_DONE (self))
1817	{	2205	{
1818	incr_parse (self);	2206	incr_parse (self);
…		…
1820	if (self->incr_pos > self->max_size && self->max_size)	2208	if (self->incr_pos > self->max_size && self->max_size)
1821	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",
1822	(unsigned long)self->incr_pos, (unsigned long)self->max_size);	2210	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
1823		2211
1824	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
1825	break;	2221	break;
		2222	}
1826	}	2223	}
1827		2224
1828	XPUSHs (decode_json (self->incr_text, self, &offset));	2225	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2226	XPUSHs (sv);
1829		2227
1830	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + offset);
1831	self->incr_pos -= offset;	2228	self->incr_pos -= offset;
1832	self->incr_nest = 0;	2229	self->incr_nest = 0;
1833	self->incr_mode = 0;	2230	self->incr_mode = 0;
		2231
		2232	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
1834	}	2233	}
1835	while (GIMME_V == G_ARRAY);	2234	while (GIMME_V == G_ARRAY);
1836	}	2235	}
1837		2236
1838	SV incr_text (JSON self)	2237	SV incr_text (JSON self)
…		…
1876	SvREFCNT_dec (self->incr_text);	2275	SvREFCNT_dec (self->incr_text);
1877		2276
1878	PROTOTYPES: ENABLE	2277	PROTOTYPES: ENABLE
1879		2278
1880	void encode_json (SV *scalar)	2279	void encode_json (SV *scalar)
1881	ALIAS:
1882	to_json_ = 0
1883	encode_json = F_UTF8
1884	PPCODE:	2280	PPCODE:
1885	{	2281	{
1886	JSON json;	2282	JSON json;
1887	json_init (&json);	2283	json_init (&json);
1888	json.flags \|= ix;	2284	json.flags \|= F_UTF8;
1889	XPUSHs (encode_json (scalar, &json));	2285	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2286	XPUSHs (scalar);
1890	}	2287	}
1891		2288
1892	void decode_json (SV *jsonstr)	2289	void decode_json (SV *jsonstr)
1893	ALIAS:
1894	from_json_ = 0
1895	decode_json = F_UTF8
1896	PPCODE:	2290	PPCODE:
1897	{	2291	{
1898	JSON json;	2292	JSON json;
1899	json_init (&json);	2293	json_init (&json);
1900	json.flags \|= ix;	2294	json.flags \|= F_UTF8;
1901	XPUSHs (decode_json (jsonstr, &json, 0));	2295	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2296	XPUSHs (jsonstr);
1902	}	2297	}
1903		2298
1904

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Comparing JSON-XS/XS.xs (file contents): Revision 1.93 by root, Mon Sep 29 03:09:27 2008 UTC vs. Revision 1.131 by root, Thu Aug 17 01:42:20 2017 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.93 by root, Mon Sep 29 03:09:27 2008 UTC vs.
Revision 1.131 by root, Thu Aug 17 01:42:20 2017 UTC