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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.82 by root, Wed Mar 26 02:35:45 2008 UTC vs.
Revision 1.124 by root, Mon Nov 24 18:42:51 2014 UTC

…		…
12	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	12	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
13	# define snprintf _snprintf // C compilers have this in stdio.h	13	# define snprintf _snprintf // C compilers have this in stdio.h
14	#endif	14	#endif
15		15
16	// some old perls do not have this, try to make it work, no	16	// 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.	17	// guarantees, though. if it breaks, you get to keep the pieces.
18	#ifndef UTF8_MAXBYTES	18	#ifndef UTF8_MAXBYTES
19	# define UTF8_MAXBYTES 13	19	# define UTF8_MAXBYTES 13
20	#endif	20	#endif
21		21
		22	// compatibility with perl <5.18
		23	#ifndef HvNAMELEN_get
		24	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		25	#endif
		26	#ifndef HvNAMELEN
		27	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		28	#endif
		29	#ifndef HvNAMEUTF8
		30	# define HvNAMEUTF8(hv) 0
		31	#endif
		32
		33	// three extra for rounding, sign, and end of string
22	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 2)	34	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)
23		35
24	#define F_ASCII 0x00000001UL	36	#define F_ASCII 0x00000001UL
25	#define F_LATIN1 0x00000002UL	37	#define F_LATIN1 0x00000002UL
26	#define F_UTF8 0x00000004UL	38	#define F_UTF8 0x00000004UL
27	#define F_INDENT 0x00000008UL	39	#define F_INDENT 0x00000008UL
…		…
31	#define F_ALLOW_NONREF 0x00000100UL	43	#define F_ALLOW_NONREF 0x00000100UL
32	#define F_SHRINK 0x00000200UL	44	#define F_SHRINK 0x00000200UL
33	#define F_ALLOW_BLESSED 0x00000400UL	45	#define F_ALLOW_BLESSED 0x00000400UL
34	#define F_CONV_BLESSED 0x00000800UL	46	#define F_CONV_BLESSED 0x00000800UL
35	#define F_RELAXED 0x00001000UL	47	#define F_RELAXED 0x00001000UL
36		48	#define F_ALLOW_UNKNOWN 0x00002000UL
37	#define F_MAXDEPTH 0xf8000000UL	49	#define F_ALLOW_TAGS 0x00004000UL
38	#define S_MAXDEPTH 27
39	#define F_MAXSIZE 0x01f00000UL
40	#define S_MAXSIZE 20
41	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing	50	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
42		51
43	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
44	#define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE ))
45
46	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	52	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
47	#define F_DEFAULT (9UL << S_MAXDEPTH)
48		53
49	#define INIT_SIZE 32 // initial scalar size to be allocated	54	#define INIT_SIZE 32 // initial scalar size to be allocated
50	#define INDENT_STEP 3 // spaces per indentation level	55	#define INDENT_STEP 3 // spaces per indentation level
51		56
52	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size	57	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
		58
		59	#define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8)
53		60
54	#define SB do {	61	#define SB do {
55	#define SE } while (0)	62	#define SE } while (0)
56		63
57	#if __GNUC__ >= 3	64	#if __GNUC__ >= 3
…		…
67		74
68	#define IN_RANGE_INC(type,val,beg,end) \	75	#define IN_RANGE_INC(type,val,beg,end) \
69	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	76	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
70	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	77	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
71		78
		79	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"
		80
72	#ifdef USE_ITHREADS	81	#ifdef USE_ITHREADS
73	# define JSON_SLOW 1	82	# define JSON_SLOW 1
74	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))	83	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))
75	#else	84	#else
76	# define JSON_SLOW 0	85	# define JSON_SLOW 0
77	# define JSON_STASH json_stash	86	# define JSON_STASH json_stash
78	#endif	87	#endif
79		88
		89	// the amount of HEs to allocate on the stack, when sorting keys
		90	#define STACK_HES 64
		91
80	static HV json_stash, json_boolean_stash; // JSON::XS::	92	static HV json_stash, types_boolean_stash; // JSON::XS::
81	static SV json_true, json_false;	93	static SV types_true, types_false, *sv_json;
82		94
83	enum {	95	enum {
84	INCR_M_WS = 0, // initial whitespace skipping, must be 0	96	INCR_M_WS = 0, // initial whitespace skipping, must be 0
85	INCR_M_STR, // inside string	97	INCR_M_STR, // inside string
86	INCR_M_BS, // inside backslash	98	INCR_M_BS, // inside backslash
		99	INCR_M_C0, // inside comment in initial whitespace sequence
		100	INCR_M_C1, // inside comment in other places
87	INCR_M_JSON // outside anything, count nesting	101	INCR_M_JSON // outside anything, count nesting
88	};	102	};
89		103
90	#define INCR_DONE(json) (!(json)->incr_nest && (json)->incr_mode == INCR_M_JSON)	104	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)
91		105
92	typedef struct {	106	typedef struct {
93	U32 flags;	107	U32 flags;
		108	U32 max_depth;
		109	STRLEN max_size;
		110
94	SV *cb_object;	111	SV *cb_object;
95	HV *cb_sk_object;	112	HV *cb_sk_object;
96		113
97	// for the incremental parser	114	// for the incremental parser
98	SV *incr_text; // the source text so far	115	SV *incr_text; // the source text so far
99	STRLEN incr_pos; // the current offset into the text	116	STRLEN incr_pos; // the current offset into the text
100	int incr_nest; // {[]}-nesting level	117	int incr_nest; // {[]}-nesting level
101	int incr_mode;	118	unsigned char incr_mode;
102	} JSON;	119	} JSON;
		120
		121	INLINE void
		122	json_init (JSON *json)
		123	{
		124	Zero (json, 1, JSON);
		125	json->max_depth = 512;
		126	}
103		127
104	/////////////////////////////////////////////////////////////////////////////	128	/////////////////////////////////////////////////////////////////////////////
105	// utility functions	129	// utility functions
106		130
		131	INLINE SV *
		132	get_bool (const char *name)
		133	{
		134	SV *sv = get_sv (name, 1);
		135
		136	SvREADONLY_on (sv);
		137	SvREADONLY_on (SvRV (sv));
		138
		139	return sv;
		140	}
		141
107	INLINE void	142	INLINE void
108	shrink (SV *sv)	143	shrink (SV *sv)
109	{	144	{
110	sv_utf8_downgrade (sv, 1);	145	sv_utf8_downgrade (sv, 1);
		146
111	if (SvLEN (sv) > SvCUR (sv) + 1)	147	if (SvLEN (sv) > SvCUR (sv) + 1)
112	{	148	{
113	#ifdef SvPV_shrink_to_cur	149	#ifdef SvPV_shrink_to_cur
114	SvPV_shrink_to_cur (sv);	150	SvPV_shrink_to_cur (sv);
115	#elif defined (SvPV_renew)	151	#elif defined (SvPV_renew)
…		…
159	*s++ = 0x80 \| ( ch & 0x3f);	195	*s++ = 0x80 \| ( ch & 0x3f);
160		196
161	return s;	197	return s;
162	}	198	}
163		199
		200	// convert offset pointer to character index, sv must be string
		201	static STRLEN
		202	ptr_to_index (SV sv, char offset)
		203	{
		204	return SvUTF8 (sv)
		205	? utf8_distance (offset, SvPVX (sv))
		206	: offset - SvPVX (sv);
		207	}
		208
		209	/////////////////////////////////////////////////////////////////////////////
		210	// fp hell
		211
		212	// scan a group of digits, and a trailing exponent
		213	static void
		214	json_atof_scan1 (const char s, NV accum, int *expo, int postdp, int maxdepth)
		215	{
		216	UV uaccum = 0;
		217	int eaccum = 0;
		218
		219	// if we recurse too deep, skip all remaining digits
		220	// to avoid a stack overflow attack
		221	if (expect_false (--maxdepth <= 0))
		222	while (((U8)*s - '0') < 10)
		223	++s;
		224
		225	for (;;)
		226	{
		227	U8 dig = (U8)*s - '0';
		228
		229	if (expect_false (dig >= 10))
		230	{
		231	if (dig == (U8)((U8)'.' - (U8)'0'))
		232	{
		233	++s;
		234	json_atof_scan1 (s, accum, expo, 1, maxdepth);
		235	}
		236	else if ((dig \| ' ') == 'e' - '0')
		237	{
		238	int exp2 = 0;
		239	int neg = 0;
		240
		241	++s;
		242
		243	if (*s == '-')
		244	{
		245	++s;
		246	neg = 1;
		247	}
		248	else if (*s == '+')
		249	++s;
		250
		251	while ((dig = (U8)*s - '0') < 10)
		252	exp2 = exp2 * 10 + *s++ - '0';
		253
		254	*expo += neg ? -exp2 : exp2;
		255	}
		256
		257	break;
		258	}
		259
		260	++s;
		261
		262	uaccum = uaccum * 10 + dig;
		263	++eaccum;
		264
		265	// if we have too many digits, then recurse for more
		266	// we actually do this for rather few digits
		267	if (uaccum >= (UV_MAX - 9) / 10)
		268	{
		269	if (postdp) *expo -= eaccum;
		270	json_atof_scan1 (s, accum, expo, postdp, maxdepth);
		271	if (postdp) *expo += eaccum;
		272
		273	break;
		274	}
		275	}
		276
		277	// this relies greatly on the quality of the pow ()
		278	// implementation of the platform, but a good
		279	// implementation is hard to beat.
		280	// (IEEE 754 conformant ones are required to be exact)
		281	if (postdp) *expo -= eaccum;
		282	accum += uaccum Perl_pow (10., *expo);
		283	*expo += eaccum;
		284	}
		285
		286	static NV
		287	json_atof (const char *s)
		288	{
		289	NV accum = 0.;
		290	int expo = 0;
		291	int neg = 0;
		292
		293	if (*s == '-')
		294	{
		295	++s;
		296	neg = 1;
		297	}
		298
		299	// a recursion depth of ten gives us >>500 bits
		300	json_atof_scan1 (s, &accum, &expo, 0, 10);
		301
		302	return neg ? -accum : accum;
		303	}
164	/////////////////////////////////////////////////////////////////////////////	304	/////////////////////////////////////////////////////////////////////////////
165	// encoder	305	// encoder
166		306
167	// structure used for encoding JSON	307	// structure used for encoding JSON
168	typedef struct	308	typedef struct
…		…
170	char *cur; // SvPVX (sv) + current output position	310	char *cur; // SvPVX (sv) + current output position
171	char *end; // SvEND (sv)	311	char *end; // SvEND (sv)
172	SV *sv; // result scalar	312	SV *sv; // result scalar
173	JSON json;	313	JSON json;
174	U32 indent; // indentation level	314	U32 indent; // indentation level
175	U32 maxdepth; // max. indentation/recursion level
176	UV limit; // escape character values >= this value when encoding	315	UV limit; // escape character values >= this value when encoding
177	} enc_t;	316	} enc_t;
178		317
179	INLINE void	318	INLINE void
180	need (enc_t *enc, STRLEN len)	319	need (enc_t *enc, STRLEN len)
181	{	320	{
182	if (expect_false (enc->cur + len >= enc->end))	321	if (expect_false (enc->cur + len >= enc->end))
183	{	322	{
184	STRLEN cur = enc->cur - SvPVX (enc->sv);	323	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
185	SvGROW (enc->sv, cur + len + 1);	324	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
186	enc->cur = SvPVX (enc->sv) + cur;	325	enc->cur = SvPVX (enc->sv) + cur;
187	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	326	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
188	}	327	}
189	}	328	}
190		329
…		…
265	(int)((uch - 0x10000) % 0x400 + 0xDC00));	404	(int)((uch - 0x10000) % 0x400 + 0xDC00));
266	enc->cur += 12;	405	enc->cur += 12;
267	}	406	}
268	else	407	else
269	{	408	{
270	static char hexdigit [16] = "0123456789abcdef";
271	need (enc, len += 5);	409	need (enc, len += 5);
272	*enc->cur++ = '\\';	410	*enc->cur++ = '\\';
273	*enc->cur++ = 'u';	411	*enc->cur++ = 'u';
274	*enc->cur++ = hexdigit [ uch >> 12 ];	412	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
275	*enc->cur++ = hexdigit [(uch >> 8) & 15];	413	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
276	*enc->cur++ = hexdigit [(uch >> 4) & 15];	414	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
277	*enc->cur++ = hexdigit [(uch >> 0) & 15];	415	*enc->cur++ = PL_hexdigit [(uch >> 0) & 15];
278	}	416	}
279		417
280	str += clen;	418	str += clen;
281	}	419	}
282	else if (enc->json.flags & F_LATIN1)	420	else if (enc->json.flags & F_LATIN1)
…		…
353	static void	491	static void
354	encode_av (enc_t enc, AV av)	492	encode_av (enc_t enc, AV av)
355	{	493	{
356	int i, len = av_len (av);	494	int i, len = av_len (av);
357		495
358	if (enc->indent >= enc->maxdepth)	496	if (enc->indent >= enc->json.max_depth)
359	croak ("data structure too deep (hit recursion limit)");	497	croak (ERR_NESTING_EXCEEDED);
360		498
361	encode_ch (enc, '[');	499	encode_ch (enc, '[');
362		500
363	if (len >= 0)	501	if (len >= 0)
364	{	502	{
365	encode_nl (enc); ++enc->indent;	503	encode_nl (enc); ++enc->indent;
366		504
367	for (i = 0; i <= len; ++i)	505	for (i = 0; i <= len; ++i)
…		…
379	encode_comma (enc);	517	encode_comma (enc);
380	}	518	}
381		519
382	encode_nl (enc); --enc->indent; encode_indent (enc);	520	encode_nl (enc); --enc->indent; encode_indent (enc);
383	}	521	}
384		522
385	encode_ch (enc, ']');	523	encode_ch (enc, ']');
386	}	524	}
387		525
388	static void	526	static void
389	encode_hk (enc_t enc, HE he)	527	encode_hk (enc_t enc, HE he)
…		…
393	if (HeKLEN (he) == HEf_SVKEY)	531	if (HeKLEN (he) == HEf_SVKEY)
394	{	532	{
395	SV *sv = HeSVKEY (he);	533	SV *sv = HeSVKEY (he);
396	STRLEN len;	534	STRLEN len;
397	char *str;	535	char *str;
398		536
399	SvGETMAGIC (sv);	537	SvGETMAGIC (sv);
400	str = SvPV (sv, len);	538	str = SvPV (sv, len);
401		539
402	encode_str (enc, str, len, SvUTF8 (sv));	540	encode_str (enc, str, len, SvUTF8 (sv));
403	}	541	}
…		…
439	static void	577	static void
440	encode_hv (enc_t enc, HV hv)	578	encode_hv (enc_t enc, HV hv)
441	{	579	{
442	HE *he;	580	HE *he;
443		581
444	if (enc->indent >= enc->maxdepth)	582	if (enc->indent >= enc->json.max_depth)
445	croak ("data structure too deep (hit recursion limit)");	583	croak (ERR_NESTING_EXCEEDED);
446		584
447	encode_ch (enc, '{');	585	encode_ch (enc, '{');
448		586
449	// for canonical output we have to sort by keys first	587	// for canonical output we have to sort by keys first
450	// actually, this is mostly due to the stupid so-called	588	// actually, this is mostly due to the stupid so-called
451	// security workaround added somewhere in 5.8.x.	589	// security workaround added somewhere in 5.8.x
452	// that randomises hash orderings	590	// that randomises hash orderings
453	if (enc->json.flags & F_CANONICAL)	591	if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv))
454	{	592	{
455	int count = hv_iterinit (hv);	593	int count = hv_iterinit (hv);
456		594
457	if (SvMAGICAL (hv))	595	if (SvMAGICAL (hv))
458	{	596	{
…		…
469	}	607	}
470		608
471	if (count)	609	if (count)
472	{	610	{
473	int i, fast = 1;	611	int i, fast = 1;
474	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	612	HE *hes_stack [STACK_HES];
475	HE *hes = _alloca (count sizeof (HE));	613	HE **hes = hes_stack;
476	#else	614
477	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	615	// allocate larger arrays on the heap
478	#endif	616	if (count > STACK_HES)
		617	{
		618	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		619	hes = (HE **)SvPVX (sv);
		620	}
479		621
480	i = 0;	622	i = 0;
481	while ((he = hv_iternext (hv)))	623	while ((he = hv_iternext (hv)))
482	{	624	{
483	hes [i++] = he;	625	hes [i++] = he;
…		…
552	// encode objects, arrays and special \0=false and \1=true values.	694	// encode objects, arrays and special \0=false and \1=true values.
553	static void	695	static void
554	encode_rv (enc_t enc, SV sv)	696	encode_rv (enc_t enc, SV sv)
555	{	697	{
556	svtype svt;	698	svtype svt;
		699	GV *method;
557		700
558	SvGETMAGIC (sv);	701	SvGETMAGIC (sv);
559	svt = SvTYPE (sv);	702	svt = SvTYPE (sv);
560		703
561	if (expect_false (SvOBJECT (sv)))	704	if (expect_false (SvOBJECT (sv)))
562	{	705	{
563	HV *stash = !JSON_SLOW \|\| json_boolean_stash	706	HV *boolean_stash = !JSON_SLOW \|\| types_boolean_stash
564	? json_boolean_stash	707	? types_boolean_stash
565	: gv_stashpv ("JSON::XS::Boolean", 1);	708	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		709	HV *stash = SvSTASH (sv);
566		710
567	if (SvSTASH (sv) == stash)	711	if (stash == boolean_stash)
568	{	712	{
569	if (SvIV (sv))	713	if (SvIV (sv))
570	encode_str (enc, "true", 4, 0);	714	encode_str (enc, "true", 4, 0);
571	else	715	else
572	encode_str (enc, "false", 5, 0);	716	encode_str (enc, "false", 5, 0);
573	}	717	}
		718	else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
		719	{
		720	int count;
		721	dSP;
		722
		723	ENTER; SAVETMPS; PUSHMARK (SP);
		724	EXTEND (SP, 2);
		725	// we re-bless the reference to get overload and other niceties right
		726	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		727	PUSHs (sv_json);
		728
		729	PUTBACK;
		730	count = call_sv ((SV *)GvCV (method), G_ARRAY);
		731	SPAGAIN;
		732
		733	// catch this surprisingly common error
		734	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		735	croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		736
		737	encode_ch (enc, '(');
		738	encode_ch (enc, '"');
		739	encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
		740	encode_ch (enc, '"');
		741	encode_ch (enc, ')');
		742	encode_ch (enc, '[');
		743
		744	while (count)
		745	{
		746	encode_sv (enc, SP[1 - count--]);
		747
		748	if (count)
		749	encode_ch (enc, ',');
		750	}
		751
		752	encode_ch (enc, ']');
		753
		754	PUTBACK;
		755
		756	FREETMPS; LEAVE;
		757	}
		758	else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
		759	{
		760	dSP;
		761
		762	ENTER; SAVETMPS; PUSHMARK (SP);
		763	// we re-bless the reference to get overload and other niceties right
		764	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		765
		766	// calling with G_SCALAR ensures that we always get a 1 return value
		767	PUTBACK;
		768	call_sv ((SV *)GvCV (method), G_SCALAR);
		769	SPAGAIN;
		770
		771	// catch this surprisingly common error
		772	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		773	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		774
		775	sv = POPs;
		776	PUTBACK;
		777
		778	encode_sv (enc, sv);
		779
		780	FREETMPS; LEAVE;
		781	}
		782	else if (enc->json.flags & F_ALLOW_BLESSED)
		783	encode_str (enc, "null", 4, 0);
574	else	784	else
575	{
576	#if 0
577	if (0 && sv_derived_from (rv, "JSON::Literal"))
578	{
579	// not yet
580	}
581	#endif
582	if (enc->json.flags & F_CONV_BLESSED)
583	{
584	// we re-bless the reference to get overload and other niceties right
585	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
586
587	if (to_json)
588	{
589	dSP;
590
591	ENTER; SAVETMPS; PUSHMARK (SP);
592	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
593
594	// calling with G_SCALAR ensures that we always get a 1 return value
595	PUTBACK;
596	call_sv ((SV *)GvCV (to_json), G_SCALAR);
597	SPAGAIN;
598
599	// catch this surprisingly common error
600	if (SvROK (TOPs) && SvRV (TOPs) == sv)
601	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
602
603	sv = POPs;
604	PUTBACK;
605
606	encode_sv (enc, sv);
607
608	FREETMPS; LEAVE;
609	}
610	else if (enc->json.flags & F_ALLOW_BLESSED)
611	encode_str (enc, "null", 4, 0);
612	else
613	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
614	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
615	}
616	else if (enc->json.flags & F_ALLOW_BLESSED)
617	encode_str (enc, "null", 4, 0);
618	else
619	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	785	croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
620	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	786	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
621	}
622	}	787	}
623	else if (svt == SVt_PVHV)	788	else if (svt == SVt_PVHV)
624	encode_hv (enc, (HV *)sv);	789	encode_hv (enc, (HV *)sv);
625	else if (svt == SVt_PVAV)	790	else if (svt == SVt_PVAV)
626	encode_av (enc, (AV *)sv);	791	encode_av (enc, (AV *)sv);
…		…
631		796
632	if (len == 1 && *pv == '1')	797	if (len == 1 && *pv == '1')
633	encode_str (enc, "true", 4, 0);	798	encode_str (enc, "true", 4, 0);
634	else if (len == 1 && *pv == '0')	799	else if (len == 1 && *pv == '0')
635	encode_str (enc, "false", 5, 0);	800	encode_str (enc, "false", 5, 0);
		801	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		802	encode_str (enc, "null", 4, 0);
636	else	803	else
637	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	804	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
638	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	805	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
639	}	806	}
		807	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		808	encode_str (enc, "null", 4, 0);
640	else	809	else
641	croak ("encountered %s, but JSON can only represent references to arrays or hashes",	810	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
642	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	811	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
643	}	812	}
644		813
…		…
698	}	867	}
699	else	868	else
700	{	869	{
701	// large integer, use the (rather slow) snprintf way.	870	// large integer, use the (rather slow) snprintf way.
702	need (enc, IVUV_MAXCHARS);	871	need (enc, IVUV_MAXCHARS);
703	enc->cur +=	872	enc->cur +=
704	SvIsUV(sv)	873	SvIsUV(sv)
705	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	874	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
706	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	875	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
707	}	876	}
708	}	877	}
709	else if (SvROK (sv))	878	else if (SvROK (sv))
710	encode_rv (enc, SvRV (sv));	879	encode_rv (enc, SvRV (sv));
711	else if (!SvOK (sv))	880	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
712	encode_str (enc, "null", 4, 0);	881	encode_str (enc, "null", 4, 0);
713	else	882	else
714	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	883	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
715	SvPV_nolen (sv), SvFLAGS (sv));	884	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
716	}	885	}
717		886
718	static SV *	887	static SV *
719	encode_json (SV scalar, JSON json)	888	encode_json (SV scalar, JSON json)
720	{	889	{
…		…
726	enc.json = *json;	895	enc.json = *json;
727	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	896	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
728	enc.cur = SvPVX (enc.sv);	897	enc.cur = SvPVX (enc.sv);
729	enc.end = SvEND (enc.sv);	898	enc.end = SvEND (enc.sv);
730	enc.indent = 0;	899	enc.indent = 0;
731	enc.maxdepth = DEC_DEPTH (enc.json.flags);
732	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL	900	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL
733	: enc.json.flags & F_LATIN1 ? 0x000100UL	901	: enc.json.flags & F_LATIN1 ? 0x000100UL
734	: 0x110000UL;	902	: 0x110000UL;
735		903
736	SvPOK_only (enc.sv);	904	SvPOK_only (enc.sv);
737	encode_sv (&enc, scalar);	905	encode_sv (&enc, scalar);
		906	encode_nl (&enc);
738		907
739	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	908	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
740	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	909	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
741		910
742	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	911	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
…		…
803	if (*dec->cur != ch) \	972	if (*dec->cur != ch) \
804	ERR (# ch " expected"); \	973	ERR (# ch " expected"); \
805	++dec->cur; \	974	++dec->cur; \
806	SE	975	SE
807		976
808	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")	977	#define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED)
809	#define DEC_DEC_DEPTH --dec->depth	978	#define DEC_DEC_DEPTH --dec->depth
810		979
811	static SV decode_sv (dec_t dec);	980	static SV decode_sv (dec_t dec);
812		981
813	static signed char decode_hexdigit[256];	982	static signed char decode_hexdigit[256];
…		…
922	else if (expect_true (ch >= 0x20 && ch < 0x80))	1091	else if (expect_true (ch >= 0x20 && ch < 0x80))
923	*cur++ = ch;	1092	*cur++ = ch;
924	else if (ch >= 0x80)	1093	else if (ch >= 0x80)
925	{	1094	{
926	STRLEN clen;	1095	STRLEN clen;
927	UV uch;
928		1096
929	--dec_cur;	1097	--dec_cur;
930		1098
931	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);	1099	decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
932	if (clen == (STRLEN)-1)	1100	if (clen == (STRLEN)-1)
933	ERR ("malformed UTF-8 character in JSON string");	1101	ERR ("malformed UTF-8 character in JSON string");
934		1102
935	do	1103	do
936	cur++ = dec_cur++;	1104	cur++ = dec_cur++;
937	while (--clen);	1105	while (--clen);
938		1106
939	utf8 = 1;	1107	utf8 = 1;
940	}	1108	}
		1109	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1110	*cur++ = ch;
941	else	1111	else
942	{	1112	{
943	--dec_cur;	1113	--dec_cur;
944		1114
945	if (!ch)	1115	if (!ch)
…		…
953	{	1123	{
954	STRLEN len = cur - buf;	1124	STRLEN len = cur - buf;
955		1125
956	if (sv)	1126	if (sv)
957	{	1127	{
958	SvGROW (sv, SvCUR (sv) + len + 1);	1128	STRLEN cur = SvCUR (sv);
		1129
		1130	if (SvLEN (sv) <= cur + len)
		1131	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
		1132
959	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1133	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
960	SvCUR_set (sv, SvCUR (sv) + len);	1134	SvCUR_set (sv, SvCUR (sv) + len);
961	}	1135	}
962	else	1136	else
963	sv = newSVpvn (buf, len);	1137	sv = newSVpvn (buf, len);
…		…
1054		1228
1055	// special case the rather common 1..5-digit-int case	1229	// special case the rather common 1..5-digit-int case
1056	if (*start == '-')	1230	if (*start == '-')
1057	switch (len)	1231	switch (len)
1058	{	1232	{
1059	case 2: return newSViv (-( start [1] - '0' * 1));	1233	case 2: return newSViv (-(IV)( start [1] - '0' * 1));
1060	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	1234	case 3: return newSViv (-(IV)( start [1] * 10 + start [2] - '0' * 11));
1061	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));	1235	case 4: return newSViv (-(IV)( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
1062	case 5: return newSViv (-( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));	1236	case 5: return newSViv (-(IV)( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
1063	case 6: return newSViv (-(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));	1237	case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));
1064	}	1238	}
1065	else	1239	else
1066	switch (len)	1240	switch (len)
1067	{	1241	{
1068	case 1: return newSViv ( start [0] - '0' * 1);	1242	case 1: return newSViv ( start [0] - '0' * 1);
1069	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	1243	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
1070	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);	1244	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
1071	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);	1245	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
1072	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);	1246	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);
1073	}	1247	}
1074		1248
1075	{	1249	{
1076	UV uv;	1250	UV uv;
1077	int numtype = grok_number (start, len, &uv);	1251	int numtype = grok_number (start, len, &uv);
…		…
1086	}	1260	}
1087		1261
1088	len -= *start == '-' ? 1 : 0;	1262	len -= *start == '-' ? 1 : 0;
1089		1263
1090	// does not fit into IV or UV, try NV	1264	// does not fit into IV or UV, try NV
1091	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1265	if (len <= NV_DIG)
1092	#if defined (LDBL_DIG)
1093	\|\| (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
1094	#endif
1095	)
1096	// fits into NV without loss of precision	1266	// fits into NV without loss of precision
1097	return newSVnv (Atof (start));	1267	return newSVnv (json_atof (start));
1098		1268
1099	// everything else fails, convert it to a string	1269	// everything else fails, convert it to a string
1100	return newSVpvn (start, dec->cur - start);	1270	return newSVpvn (start, dec->cur - start);
1101	}	1271	}
1102		1272
1103	// loss of precision here	1273	// loss of precision here
1104	return newSVnv (Atof (start));	1274	return newSVnv (json_atof (start));
1105		1275
1106	fail:	1276	fail:
1107	return 0;	1277	return 0;
1108	}	1278	}
1109		1279
…		…
1133	if (*dec->cur == ']')	1303	if (*dec->cur == ']')
1134	{	1304	{
1135	++dec->cur;	1305	++dec->cur;
1136	break;	1306	break;
1137	}	1307	}
1138		1308
1139	if (*dec->cur != ',')	1309	if (*dec->cur != ',')
1140	ERR (", or ] expected while parsing array");	1310	ERR (", or ] expected while parsing array");
1141		1311
1142	++dec->cur;	1312	++dec->cur;
1143		1313
…		…
1278	dSP;	1448	dSP;
1279	int count;	1449	int count;
1280		1450
1281	ENTER; SAVETMPS; PUSHMARK (SP);	1451	ENTER; SAVETMPS; PUSHMARK (SP);
1282	XPUSHs (HeVAL (he));	1452	XPUSHs (HeVAL (he));
		1453	sv_2mortal (sv);
1283		1454
1284	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1455	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1285		1456
1286	if (count == 1)	1457	if (count == 1)
1287	{	1458	{
1288	sv = newSVsv (POPs);	1459	sv = newSVsv (POPs);
1289	FREETMPS; LEAVE;	1460	FREETMPS; LEAVE;
1290	return sv;	1461	return sv;
1291	}	1462	}
1292		1463
		1464	SvREFCNT_inc (sv);
1293	FREETMPS; LEAVE;	1465	FREETMPS; LEAVE;
1294	}	1466	}
1295	}	1467	}
1296		1468
1297	if (dec->json.cb_object)	1469	if (dec->json.cb_object)
…		…
1323	DEC_DEC_DEPTH;	1495	DEC_DEC_DEPTH;
1324	return 0;	1496	return 0;
1325	}	1497	}
1326		1498
1327	static SV *	1499	static SV *
		1500	decode_tag (dec_t *dec)
		1501	{
		1502	SV *tag = 0;
		1503	SV *val = 0;
		1504
		1505	if (!(dec->json.flags & F_ALLOW_TAGS))
		1506	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1507
		1508	++dec->cur;
		1509
		1510	decode_ws (dec);
		1511
		1512	tag = decode_sv (dec);
		1513	if (!tag)
		1514	goto fail;
		1515
		1516	if (!SvPOK (tag))
		1517	ERR ("malformed JSON string, (tag) must be a string");
		1518
		1519	decode_ws (dec);
		1520
		1521	if (*dec->cur != ')')
		1522	ERR (") expected after tag");
		1523
		1524	++dec->cur;
		1525
		1526	decode_ws (dec);
		1527
		1528	val = decode_sv (dec);
		1529	if (!val)
		1530	goto fail;
		1531
		1532	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1533	ERR ("malformed JSON string, tag value must be an array");
		1534
		1535	{
		1536	AV av = (AV )SvRV (val);
		1537	int i, len = av_len (av) + 1;
		1538	HV *stash = gv_stashsv (tag, 0);
		1539	SV *sv;
		1540
		1541	if (!stash)
		1542	ERR ("cannot decode perl-object (package does not exist)");
		1543
		1544	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1545
		1546	if (!method)
		1547	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1548
		1549	dSP;
		1550
		1551	ENTER; SAVETMPS; PUSHMARK (SP);
		1552	EXTEND (SP, len + 2);
		1553	// we re-bless the reference to get overload and other niceties right
		1554	PUSHs (tag);
		1555	PUSHs (sv_json);
		1556
		1557	for (i = 0; i < len; ++i)
		1558	PUSHs (*av_fetch (av, i, 1));
		1559
		1560	PUTBACK;
		1561	call_sv ((SV *)GvCV (method), G_SCALAR);
		1562	SPAGAIN;
		1563
		1564	SvREFCNT_dec (tag);
		1565	SvREFCNT_dec (val);
		1566	sv = SvREFCNT_inc (POPs);
		1567
		1568	PUTBACK;
		1569
		1570	FREETMPS; LEAVE;
		1571
		1572	return sv;
		1573	}
		1574
		1575	fail:
		1576	SvREFCNT_dec (tag);
		1577	SvREFCNT_dec (val);
		1578	return 0;
		1579	}
		1580
		1581	static SV *
1328	decode_sv (dec_t *dec)	1582	decode_sv (dec_t *dec)
1329	{	1583	{
1330	// the beauty of JSON: you need exactly one character lookahead	1584	// the beauty of JSON: you need exactly one character lookahead
1331	// to parse everything.	1585	// to parse everything.
1332	switch (*dec->cur)	1586	switch (*dec->cur)
1333	{	1587	{
1334	case '"': ++dec->cur; return decode_str (dec);	1588	case '"': ++dec->cur; return decode_str (dec);
1335	case '[': ++dec->cur; return decode_av (dec);	1589	case '[': ++dec->cur; return decode_av (dec);
1336	case '{': ++dec->cur; return decode_hv (dec);	1590	case '{': ++dec->cur; return decode_hv (dec);
		1591	case '(': return decode_tag (dec);
1337		1592
1338	case '-':	1593	case '-':
1339	case '0': case '1': case '2': case '3': case '4':	1594	case '0': case '1': case '2': case '3': case '4':
1340	case '5': case '6': case '7': case '8': case '9':	1595	case '5': case '6': case '7': case '8': case '9':
1341	return decode_num (dec);	1596	return decode_num (dec);
…		…
1343	case 't':	1598	case 't':
1344	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1599	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1345	{	1600	{
1346	dec->cur += 4;	1601	dec->cur += 4;
1347	#if JSON_SLOW	1602	#if JSON_SLOW
1348	json_true = get_sv ("JSON::XS::true", 1); SvREADONLY_on (json_true);	1603	types_true = get_bool ("Types::Serialiser::true");
1349	#endif	1604	#endif
1350	return SvREFCNT_inc (json_true);	1605	return newSVsv (types_true);
1351	}	1606	}
1352	else	1607	else
1353	ERR ("'true' expected");	1608	ERR ("'true' expected");
1354		1609
1355	break;	1610	break;
…		…
1357	case 'f':	1612	case 'f':
1358	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1613	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1359	{	1614	{
1360	dec->cur += 5;	1615	dec->cur += 5;
1361	#if JSON_SLOW	1616	#if JSON_SLOW
1362	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1617	types_false = get_bool ("Types::Serialiser::false");
1363	#endif	1618	#endif
1364	return SvREFCNT_inc (json_false);	1619	return newSVsv (types_false);
1365	}	1620	}
1366	else	1621	else
1367	ERR ("'false' expected");	1622	ERR ("'false' expected");
1368		1623
1369	break;	1624	break;
…		…
1378	ERR ("'null' expected");	1633	ERR ("'null' expected");
1379		1634
1380	break;	1635	break;
1381		1636
1382	default:	1637	default:
1383	ERR ("malformed JSON string, neither array, object, number, string or atom");	1638	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1384	break;	1639	break;
1385	}	1640	}
1386		1641
1387	fail:	1642	fail:
1388	return 0;	1643	return 0;
1389	}	1644	}
1390		1645
1391	static SV *	1646	static SV *
1392	decode_json (SV string, JSON json, STRLEN *offset_return)	1647	decode_json (SV string, JSON json, char **offset_return)
1393	{	1648	{
1394	dec_t dec;	1649	dec_t dec;
1395	STRLEN offset;
1396	SV *sv;	1650	SV *sv;
1397		1651
		1652	/* work around bugs in 5.10 where manipulating magic values
		1653	* makes perl ignore the magic in subsequent accesses.
		1654	* also make a copy of non-PV values, to get them into a clean
		1655	* state (SvPV should do that, but it's buggy, see below).
		1656	*/
1398	SvGETMAGIC (string);	1657	/SvGETMAGIC (string);/
		1658	if (SvMAGICAL (string) \|\| !SvPOK (string))
		1659	string = sv_2mortal (newSVsv (string));
		1660
1399	SvUPGRADE (string, SVt_PV);	1661	SvUPGRADE (string, SVt_PV);
1400		1662
1401	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))	1663	/* work around a bug in perl 5.10, which causes SvCUR to fail an
		1664	* assertion with -DDEBUGGING, although SvCUR is documented to
		1665	* return the xpv_cur field which certainly exists after upgrading.
		1666	* according to nicholas clark, calling SvPOK fixes this.
		1667	* But it doesn't fix it, so try another workaround, call SvPV_nolen
		1668	* and hope for the best.
		1669	* Damnit, SvPV_nolen still trips over yet another assertion. This
		1670	* assertion business is seriously broken, try yet another workaround
		1671	* for the broken -DDEBUGGING.
		1672	*/
		1673	{
		1674	#ifdef DEBUGGING
		1675	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
		1676	#else
		1677	STRLEN offset = SvCUR (string);
		1678	#endif
		1679
		1680	if (offset > json->max_size && json->max_size)
1402	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1681	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1403	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));	1682	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
		1683	}
1404		1684
1405	if (json->flags & F_UTF8)	1685	if (DECODE_WANTS_OCTETS (json))
1406	sv_utf8_downgrade (string, 0);	1686	sv_utf8_downgrade (string, 0);
1407	else	1687	else
1408	sv_utf8_upgrade (string);	1688	sv_utf8_upgrade (string);
1409		1689
1410	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1690	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1411		1691
1412	dec.json = *json;	1692	dec.json = *json;
1413	dec.cur = SvPVX (string);	1693	dec.cur = SvPVX (string);
1414	dec.end = SvEND (string);	1694	dec.end = SvEND (string);
1415	dec.err = 0;	1695	dec.err = 0;
1416	dec.depth = 0;	1696	dec.depth = 0;
1417	dec.maxdepth = DEC_DEPTH (dec.json.flags);
1418		1697
1419	if (dec.json.cb_object \|\| dec.json.cb_sk_object)	1698	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
1420	dec.json.flags \|= F_HOOK;	1699	dec.json.flags \|= F_HOOK;
1421		1700
1422	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1701	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
1423		1702
1424	decode_ws (&dec);	1703	decode_ws (&dec);
1425	sv = decode_sv (&dec);	1704	sv = decode_sv (&dec);
		1705
		1706	if (offset_return)
		1707	*offset_return = dec.cur;
1426		1708
1427	if (!(offset_return \|\| !sv))	1709	if (!(offset_return \|\| !sv))
1428	{	1710	{
1429	// check for trailing garbage	1711	// check for trailing garbage
1430	decode_ws (&dec);	1712	decode_ws (&dec);
…		…
1433	{	1715	{
1434	dec.err = "garbage after JSON object";	1716	dec.err = "garbage after JSON object";
1435	SvREFCNT_dec (sv);	1717	SvREFCNT_dec (sv);
1436	sv = 0;	1718	sv = 0;
1437	}	1719	}
1438	}
1439
1440	if (offset_return \|\| !sv)
1441	{
1442	offset = dec.json.flags & F_UTF8
1443	? dec.cur - SvPVX (string)
1444	: utf8_distance (dec.cur, SvPVX (string));
1445
1446	if (offset_return)
1447	*offset_return = offset;
1448	}	1720	}
1449		1721
1450	if (!sv)	1722	if (!sv)
1451	{	1723	{
1452	SV *uni = sv_newmortal ();	1724	SV *uni = sv_newmortal ();
…		…
1458	SAVEVPTR (PL_curcop);	1730	SAVEVPTR (PL_curcop);
1459	PL_curcop = &cop;	1731	PL_curcop = &cop;
1460	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1732	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1461	LEAVE;	1733	LEAVE;
1462		1734
1463	croak ("%s, at character offset %d [\"%s\"]",	1735	croak ("%s, at character offset %d (before \"%s\")",
1464	dec.err,	1736	dec.err,
1465	(int)offset,	1737	(int)ptr_to_index (string, dec.cur),
1466	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1738	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1467	}	1739	}
1468		1740
1469	sv = sv_2mortal (sv);	1741	sv = sv_2mortal (sv);
1470		1742
…		…
1479		1751
1480	static void	1752	static void
1481	incr_parse (JSON *self)	1753	incr_parse (JSON *self)
1482	{	1754	{
1483	const char *p = SvPVX (self->incr_text) + self->incr_pos;	1755	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1756
		1757	// the state machine here is a bit convoluted and could be simplified a lot
		1758	// but this would make it slower, so...
1484		1759
1485	for (;;)	1760	for (;;)
1486	{	1761	{
1487	//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	1762	//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
1488	switch (self->incr_mode)	1763	switch (self->incr_mode)
1489	{	1764	{
1490	// only used for intiial whitespace skipping	1765	// only used for initial whitespace skipping
1491	case INCR_M_WS:	1766	case INCR_M_WS:
1492	for (;;)	1767	for (;;)
1493	{	1768	{
1494	if (*p > 0x20)	1769	if (*p > 0x20)
1495	{	1770	{
		1771	if (*p == '#')
		1772	{
		1773	self->incr_mode = INCR_M_C0;
		1774	goto incr_m_c;
		1775	}
		1776	else
		1777	{
1496	self->incr_mode = INCR_M_JSON;	1778	self->incr_mode = INCR_M_JSON;
1497	goto incr_m_json;	1779	goto incr_m_json;
		1780	}
1498	}	1781	}
1499	else if (!*p)	1782	else if (!*p)
1500	goto interrupt;	1783	goto interrupt;
1501		1784
1502	++p;	1785	++p;
…		…
1508	goto interrupt;	1791	goto interrupt;
1509		1792
1510	++p;	1793	++p;
1511	self->incr_mode = INCR_M_STR;	1794	self->incr_mode = INCR_M_STR;
1512	goto incr_m_str;	1795	goto incr_m_str;
		1796
		1797	// inside #-style comments
		1798	case INCR_M_C0:
		1799	case INCR_M_C1:
		1800	incr_m_c:
		1801	for (;;)
		1802	{
		1803	if (*p == '\n')
		1804	{
		1805	self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON;
		1806	break;
		1807	}
		1808	else if (!*p)
		1809	goto interrupt;
		1810
		1811	++p;
		1812	}
		1813
		1814	break;
1513		1815
1514	// inside a string	1816	// inside a string
1515	case INCR_M_STR:	1817	case INCR_M_STR:
1516	incr_m_str:	1818	incr_m_str:
1517	for (;;)	1819	for (;;)
…		…
1568	self->incr_mode = INCR_M_STR;	1870	self->incr_mode = INCR_M_STR;
1569	goto incr_m_str;	1871	goto incr_m_str;
1570		1872
1571	case '[':	1873	case '[':
1572	case '{':	1874	case '{':
		1875	case '(':
1573	++self->incr_nest;	1876	if (++self->incr_nest > self->max_depth)
		1877	croak (ERR_NESTING_EXCEEDED);
1574	break;	1878	break;
1575		1879
1576	case ']':	1880	case ']':
1577	case '}':	1881	case '}':
1578	if (!--self->incr_nest)	1882	if (--self->incr_nest <= 0)
1579	goto interrupt;	1883	goto interrupt;
		1884	break;
		1885
		1886	case ')':
		1887	--self->incr_nest;
		1888	break;
		1889
		1890	case '#':
		1891	self->incr_mode = INCR_M_C1;
		1892	goto incr_m_c;
1580	}	1893	}
1581	}	1894	}
1582	}	1895	}
1583		1896
1584	modechange:	1897	modechange:
1585	;	1898	;
1586	}	1899	}
1587		1900
1588	interrupt:	1901	interrupt:
1589	self->incr_pos = p - SvPVX (self->incr_text);	1902	self->incr_pos = p - SvPVX (self->incr_text);
		1903	//printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D
1590	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D	1904	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
1591	}	1905	}
1592		1906
1593	/////////////////////////////////////////////////////////////////////////////	1907	/////////////////////////////////////////////////////////////////////////////
1594	// XS interface functions	1908	// XS interface functions
…		…
1604	i >= '0' && i <= '9' ? i - '0'	1918	i >= '0' && i <= '9' ? i - '0'
1605	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1919	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1606	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1920	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1607	: -1;	1921	: -1;
1608		1922
1609	json_stash = gv_stashpv ("JSON::XS" , 1);	1923	json_stash = gv_stashpv ("JSON::XS" , 1);
1610	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	1924	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1611		1925
1612	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );	1926	types_true = get_bool ("Types::Serialiser::true");
1613	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1927	types_false = get_bool ("Types::Serialiser::false");
		1928
		1929	sv_json = newSVpv ("JSON", 0);
		1930	SvREADONLY_on (sv_json);
		1931
		1932	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1614	}	1933	}
1615		1934
1616	PROTOTYPES: DISABLE	1935	PROTOTYPES: DISABLE
1617		1936
1618	void CLONE (...)	1937	void CLONE (...)
1619	CODE:	1938	CODE:
1620	json_stash = 0;	1939	json_stash = 0;
1621	json_boolean_stash = 0;	1940	types_boolean_stash = 0;
1622		1941
1623	void new (char *klass)	1942	void new (char *klass)
1624	PPCODE:	1943	PPCODE:
1625	{	1944	{
1626	SV *pv = NEWSV (0, sizeof (JSON));	1945	SV *pv = NEWSV (0, sizeof (JSON));
1627	SvPOK_only (pv);	1946	SvPOK_only (pv);
1628	Zero (SvPVX (pv), 1, JSON);	1947	json_init ((JSON *)SvPVX (pv));
1629	((JSON *)SvPVX (pv))->flags = F_DEFAULT;
1630	XPUSHs (sv_2mortal (sv_bless (	1948	XPUSHs (sv_2mortal (sv_bless (
1631	newRV_noinc (pv),	1949	newRV_noinc (pv),
1632	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	1950	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1633	)));	1951	)));
1634	}	1952	}
…		…
1646	allow_nonref = F_ALLOW_NONREF	1964	allow_nonref = F_ALLOW_NONREF
1647	shrink = F_SHRINK	1965	shrink = F_SHRINK
1648	allow_blessed = F_ALLOW_BLESSED	1966	allow_blessed = F_ALLOW_BLESSED
1649	convert_blessed = F_CONV_BLESSED	1967	convert_blessed = F_CONV_BLESSED
1650	relaxed = F_RELAXED	1968	relaxed = F_RELAXED
		1969	allow_unknown = F_ALLOW_UNKNOWN
		1970	allow_tags = F_ALLOW_TAGS
1651	PPCODE:	1971	PPCODE:
1652	{	1972	{
1653	if (enable)	1973	if (enable)
1654	self->flags \|= ix;	1974	self->flags \|= ix;
1655	else	1975	else
…		…
1670	get_allow_nonref = F_ALLOW_NONREF	1990	get_allow_nonref = F_ALLOW_NONREF
1671	get_shrink = F_SHRINK	1991	get_shrink = F_SHRINK
1672	get_allow_blessed = F_ALLOW_BLESSED	1992	get_allow_blessed = F_ALLOW_BLESSED
1673	get_convert_blessed = F_CONV_BLESSED	1993	get_convert_blessed = F_CONV_BLESSED
1674	get_relaxed = F_RELAXED	1994	get_relaxed = F_RELAXED
		1995	get_allow_unknown = F_ALLOW_UNKNOWN
		1996	get_allow_tags = F_ALLOW_TAGS
1675	PPCODE:	1997	PPCODE:
1676	XPUSHs (boolSV (self->flags & ix));	1998	XPUSHs (boolSV (self->flags & ix));
1677		1999
1678	void max_depth (JSON *self, UV max_depth = 0x80000000UL)	2000	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1679	PPCODE:	2001	PPCODE:
1680	{	2002	self->max_depth = max_depth;
1681	UV log2 = 0;
1682
1683	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1684
1685	while ((1UL << log2) < max_depth)
1686	++log2;
1687
1688	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1689
1690	XPUSHs (ST (0));	2003	XPUSHs (ST (0));
1691	}
1692		2004
1693	U32 get_max_depth (JSON *self)	2005	U32 get_max_depth (JSON *self)
1694	CODE:	2006	CODE:
1695	RETVAL = DEC_DEPTH (self->flags);	2007	RETVAL = self->max_depth;
1696	OUTPUT:	2008	OUTPUT:
1697	RETVAL	2009	RETVAL
1698		2010
1699	void max_size (JSON *self, UV max_size = 0)	2011	void max_size (JSON *self, U32 max_size = 0)
1700	PPCODE:	2012	PPCODE:
1701	{	2013	self->max_size = max_size;
1702	UV log2 = 0;
1703
1704	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
1705	if (max_size == 1) max_size = 2;
1706
1707	while ((1UL << log2) < max_size)
1708	++log2;
1709
1710	self->flags = self->flags & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
1711
1712	XPUSHs (ST (0));	2014	XPUSHs (ST (0));
1713	}
1714		2015
1715	int get_max_size (JSON *self)	2016	int get_max_size (JSON *self)
1716	CODE:	2017	CODE:
1717	RETVAL = DEC_SIZE (self->flags);	2018	RETVAL = self->max_size;
1718	OUTPUT:	2019	OUTPUT:
1719	RETVAL	2020	RETVAL
1720		2021
1721	void filter_json_object (JSON self, SV cb = &PL_sv_undef)	2022	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1722	PPCODE:	2023	PPCODE:
…		…
1728	}	2029	}
1729		2030
1730	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2031	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1731	PPCODE:	2032	PPCODE:
1732	{	2033	{
1733	if (!self->cb_sk_object)	2034	if (!self->cb_sk_object)
1734	self->cb_sk_object = newHV ();	2035	self->cb_sk_object = newHV ();
1735		2036
1736	if (SvOK (cb))	2037	if (SvOK (cb))
1737	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2038	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1738	else	2039	else
…		…
1749	XPUSHs (ST (0));	2050	XPUSHs (ST (0));
1750	}	2051	}
1751		2052
1752	void encode (JSON self, SV scalar)	2053	void encode (JSON self, SV scalar)
1753	PPCODE:	2054	PPCODE:
1754	XPUSHs (encode_json (scalar, self));	2055	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2056	XPUSHs (scalar);
1755		2057
1756	void decode (JSON self, SV jsonstr)	2058	void decode (JSON self, SV jsonstr)
1757	PPCODE:	2059	PPCODE:
1758	XPUSHs (decode_json (jsonstr, self, 0));	2060	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2061	XPUSHs (jsonstr);
1759		2062
1760	void decode_prefix (JSON self, SV jsonstr)	2063	void decode_prefix (JSON self, SV jsonstr)
1761	PPCODE:	2064	PPCODE:
1762	{	2065	{
1763	STRLEN offset;	2066	SV *sv;
		2067	char *offset;
		2068	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1764	EXTEND (SP, 2);	2069	EXTEND (SP, 2);
1765	PUSHs (decode_json (jsonstr, self, &offset));	2070	PUSHs (sv);
1766	PUSHs (sv_2mortal (newSVuv (offset)));	2071	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));
1767	}	2072	}
1768		2073
1769	void incr_parse (JSON self, SV jsonstr = 0)	2074	void incr_parse (JSON self, SV jsonstr = 0)
1770	PPCODE:	2075	PPCODE:
1771	{	2076	{
1772	if (!self->incr_text)	2077	if (!self->incr_text)
1773	self->incr_text = newSVpvn ("", 0);	2078	self->incr_text = newSVpvn ("", 0);
		2079
		2080	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2081	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2082	if (DECODE_WANTS_OCTETS (self))
		2083	{
		2084	if (self->incr_pos)
		2085	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2086	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2087
		2088	sv_utf8_downgrade (self->incr_text, 0);
		2089	}
		2090	else
		2091	{
		2092	sv_utf8_upgrade (self->incr_text);
		2093
		2094	if (self->incr_pos)
		2095	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2096	- (U8 *)SvPVX (self->incr_text);
		2097	}
1774		2098
1775	// append data, if any	2099	// append data, if any
1776	if (jsonstr)	2100	if (jsonstr)
1777	{	2101	{
		2102	/* make sure both strings have same encoding */
1778	if (SvUTF8 (jsonstr) && !SvUTF8 (self->incr_text))	2103	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
		2104	if (SvUTF8 (jsonstr))
		2105	sv_utf8_downgrade (jsonstr, 0);
1779	{	2106	else
1780	/* utf-8-ness differs, need to upgrade */
1781	sv_utf8_upgrade (self->incr_text);	2107	sv_utf8_upgrade (jsonstr);
1782		2108
1783	if (self->incr_pos)	2109	/* and then just blindly append */
1784	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
1785	- (U8 *)SvPVX (self->incr_text);
1786	}
1787
1788	{	2110	{
1789	STRLEN len;	2111	STRLEN len;
1790	const char *str = SvPV (jsonstr, len);	2112	const char *str = SvPV (jsonstr, len);
1791	SvGROW (self->incr_text, SvCUR (self->incr_text) + len + 1);	2113	STRLEN cur = SvCUR (self->incr_text);
		2114
		2115	if (SvLEN (self->incr_text) <= cur + len)
		2116	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
		2117
1792	Move (str, SvEND (self->incr_text), len, char);	2118	Move (str, SvEND (self->incr_text), len, char);
1793	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);	2119	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
1794	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there	2120	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1795	}	2121	}
1796	}	2122	}
1797		2123
1798	if (GIMME_V != G_VOID)	2124	if (GIMME_V != G_VOID)
1799	do	2125	do
1800	{	2126	{
		2127	SV *sv;
1801	STRLEN offset;	2128	char *offset;
1802		2129
1803	if (!INCR_DONE (self))	2130	if (!INCR_DONE (self))
1804	{	2131	{
1805	incr_parse (self);	2132	incr_parse (self);
		2133
		2134	if (self->incr_pos > self->max_size && self->max_size)
		2135	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		2136	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
		2137
1806	if (!INCR_DONE (self))	2138	if (!INCR_DONE (self))
		2139	{
		2140	// as an optimisation, do not accumulate white space in the incr buffer
		2141	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2142	{
		2143	self->incr_pos = 0;
		2144	SvCUR_set (self->incr_text, 0);
		2145	}
		2146
1807	break;	2147	break;
		2148	}
1808	}	2149	}
1809		2150
1810	XPUSHs (decode_json (self->incr_text, self, &offset));	2151	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2152	XPUSHs (sv);
1811		2153
1812	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + offset);
1813	self->incr_pos -= offset;	2154	self->incr_pos -= offset - SvPVX (self->incr_text);
1814	self->incr_nest = 0;	2155	self->incr_nest = 0;
1815	self->incr_mode = 0;	2156	self->incr_mode = 0;
		2157
		2158	sv_chop (self->incr_text, offset);
1816	}	2159	}
1817	while (GIMME_V == G_ARRAY);	2160	while (GIMME_V == G_ARRAY);
1818	}	2161	}
1819		2162
1820	SV incr_text (JSON self)	2163	SV incr_text (JSON self)
…		…
1839	self->incr_nest = 0;	2182	self->incr_nest = 0;
1840	self->incr_mode = 0;	2183	self->incr_mode = 0;
1841	}	2184	}
1842	}	2185	}
1843		2186
		2187	void incr_reset (JSON *self)
		2188	CODE:
		2189	{
		2190	SvREFCNT_dec (self->incr_text);
		2191	self->incr_text = 0;
		2192	self->incr_pos = 0;
		2193	self->incr_nest = 0;
		2194	self->incr_mode = 0;
		2195	}
		2196
1844	void DESTROY (JSON *self)	2197	void DESTROY (JSON *self)
1845	CODE:	2198	CODE:
1846	SvREFCNT_dec (self->cb_sk_object);	2199	SvREFCNT_dec (self->cb_sk_object);
1847	SvREFCNT_dec (self->cb_object);	2200	SvREFCNT_dec (self->cb_object);
1848	SvREFCNT_dec (self->incr_text);	2201	SvREFCNT_dec (self->incr_text);
1849		2202
1850	PROTOTYPES: ENABLE	2203	PROTOTYPES: ENABLE
1851		2204
1852	void encode_json (SV *scalar)	2205	void encode_json (SV *scalar)
1853	ALIAS:
1854	to_json_ = 0
1855	encode_json = F_UTF8
1856	PPCODE:	2206	PPCODE:
1857	{	2207	{
1858	JSON json = { F_DEFAULT \| ix };	2208	JSON json;
1859	XPUSHs (encode_json (scalar, &json));	2209	json_init (&json);
		2210	json.flags \|= F_UTF8;
		2211	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2212	XPUSHs (scalar);
1860	}	2213	}
1861		2214
1862	void decode_json (SV *jsonstr)	2215	void decode_json (SV *jsonstr)
1863	ALIAS:
1864	from_json_ = 0
1865	decode_json = F_UTF8
1866	PPCODE:	2216	PPCODE:
1867	{	2217	{
1868	JSON json = { F_DEFAULT \| ix };	2218	JSON json;
1869	XPUSHs (decode_json (jsonstr, &json, 0));	2219	json_init (&json);
		2220	json.flags \|= F_UTF8;
		2221	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2222	XPUSHs (jsonstr);
1870	}	2223	}
1871		2224
1872

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Comparing JSON-XS/XS.xs (file contents): Revision 1.82 by root, Wed Mar 26 02:35:45 2008 UTC vs. Revision 1.124 by root, Mon Nov 24 18:42:51 2014 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.82 by root, Wed Mar 26 02:35:45 2008 UTC vs.
Revision 1.124 by root, Mon Nov 24 18:42:51 2014 UTC