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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.78 by root, Tue Mar 25 19:31:02 2008 UTC vs.
Revision 1.120 by root, Mon Oct 28 23:23:10 2013 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	// three extra for rounding, sign, and end of string
22	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 2)	23	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)
23		24
24	#define F_ASCII 0x00000001UL	25	#define F_ASCII 0x00000001UL
25	#define F_LATIN1 0x00000002UL	26	#define F_LATIN1 0x00000002UL
26	#define F_UTF8 0x00000004UL	27	#define F_UTF8 0x00000004UL
27	#define F_INDENT 0x00000008UL	28	#define F_INDENT 0x00000008UL
…		…
31	#define F_ALLOW_NONREF 0x00000100UL	32	#define F_ALLOW_NONREF 0x00000100UL
32	#define F_SHRINK 0x00000200UL	33	#define F_SHRINK 0x00000200UL
33	#define F_ALLOW_BLESSED 0x00000400UL	34	#define F_ALLOW_BLESSED 0x00000400UL
34	#define F_CONV_BLESSED 0x00000800UL	35	#define F_CONV_BLESSED 0x00000800UL
35	#define F_RELAXED 0x00001000UL	36	#define F_RELAXED 0x00001000UL
36		37	#define F_ALLOW_UNKNOWN 0x00002000UL
37	#define F_MAXDEPTH 0xf8000000UL	38	#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	39	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
42		40
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	41	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
47	#define F_DEFAULT (9UL << S_MAXDEPTH)
48		42
49	#define INIT_SIZE 32 // initial scalar size to be allocated	43	#define INIT_SIZE 32 // initial scalar size to be allocated
50	#define INDENT_STEP 3 // spaces per indentation level	44	#define INDENT_STEP 3 // spaces per indentation level
51		45
52	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size	46	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
		47
		48	#define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8)
53		49
54	#define SB do {	50	#define SB do {
55	#define SE } while (0)	51	#define SE } while (0)
56		52
57	#if __GNUC__ >= 3	53	#if __GNUC__ >= 3
…		…
67		63
68	#define IN_RANGE_INC(type,val,beg,end) \	64	#define IN_RANGE_INC(type,val,beg,end) \
69	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	65	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
70	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	66	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
71		67
		68	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"
		69
72	#ifdef USE_ITHREADS	70	#ifdef USE_ITHREADS
73	# define JSON_SLOW 1	71	# define JSON_SLOW 1
74	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))	72	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))
75	#else	73	#else
76	# define JSON_SLOW 0	74	# define JSON_SLOW 0
77	# define JSON_STASH json_stash	75	# define JSON_STASH json_stash
78	#endif	76	#endif
79		77
		78	// the amount of HEs to allocate on the stack, when sorting keys
		79	#define STACK_HES 64
		80
80	static HV json_stash, json_boolean_stash; // JSON::XS::	81	static HV json_stash, types_boolean_stash; // JSON::XS::
81	static SV json_true, json_false;	82	static SV types_true, types_false, *sv_json;
82		83
83	enum {	84	enum {
84	INCR_M_WS = 0, // initial whitespace skipping, must be 0	85	INCR_M_WS = 0, // initial whitespace skipping, must be 0
85	INCR_M_STR, // inside string	86	INCR_M_STR, // inside string
86	INCR_M_BS, // inside backslash	87	INCR_M_BS, // inside backslash
		88	INCR_M_C0, // inside comment in initial whitespace sequence
		89	INCR_M_C1, // inside comment in other places
87	INCR_M_JSON // outside anything, count nesting	90	INCR_M_JSON // outside anything, count nesting
88	};	91	};
89		92
90	#define INCR_DONE(json) (!(json)->incr_nest && (json)->incr_mode == INCR_M_JSON)	93	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)
91		94
92	typedef struct {	95	typedef struct {
93	U32 flags;	96	U32 flags;
		97	U32 max_depth;
		98	STRLEN max_size;
		99
94	SV *cb_object;	100	SV *cb_object;
95	HV *cb_sk_object;	101	HV *cb_sk_object;
96		102
97	// for the incremental parser	103	// for the incremental parser
98	SV *incr_text; // the source text so far	104	SV *incr_text; // the source text so far
99	STRLEN incr_pos; // the current offset into the text	105	STRLEN incr_pos; // the current offset into the text
100	int incr_nest; // {[]}-nesting level	106	int incr_nest; // {[]}-nesting level
101	int incr_mode;	107	unsigned char incr_mode;
102	} JSON;	108	} JSON;
		109
		110	INLINE void
		111	json_init (JSON *json)
		112	{
		113	Zero (json, 1, JSON);
		114	json->max_depth = 512;
		115	}
103		116
104	/////////////////////////////////////////////////////////////////////////////	117	/////////////////////////////////////////////////////////////////////////////
105	// utility functions	118	// utility functions
106		119
		120	INLINE SV *
		121	get_bool (const char *name)
		122	{
		123	SV *sv = get_sv (name, 1);
		124
		125	SvREADONLY_on (sv);
		126	SvREADONLY_on (SvRV (sv));
		127
		128	return sv;
		129	}
		130
107	INLINE void	131	INLINE void
108	shrink (SV *sv)	132	shrink (SV *sv)
109	{	133	{
110	sv_utf8_downgrade (sv, 1);	134	sv_utf8_downgrade (sv, 1);
		135
111	if (SvLEN (sv) > SvCUR (sv) + 1)	136	if (SvLEN (sv) > SvCUR (sv) + 1)
112	{	137	{
113	#ifdef SvPV_shrink_to_cur	138	#ifdef SvPV_shrink_to_cur
114	SvPV_shrink_to_cur (sv);	139	SvPV_shrink_to_cur (sv);
115	#elif defined (SvPV_renew)	140	#elif defined (SvPV_renew)
…		…
159	*s++ = 0x80 \| ( ch & 0x3f);	184	*s++ = 0x80 \| ( ch & 0x3f);
160		185
161	return s;	186	return s;
162	}	187	}
163		188
		189	// convert offset pointer to character index, sv must be string
		190	static STRLEN
		191	ptr_to_index (SV sv, char offset)
		192	{
		193	return SvUTF8 (sv)
		194	? utf8_distance (offset, SvPVX (sv))
		195	: offset - SvPVX (sv);
		196	}
		197
		198	/////////////////////////////////////////////////////////////////////////////
		199	// fp hell
		200
		201	// scan a group of digits, and a trailing exponent
		202	static void
		203	json_atof_scan1 (const char s, NV accum, int *expo, int postdp, int maxdepth)
		204	{
		205	UV uaccum = 0;
		206	int eaccum = 0;
		207
		208	// if we recurse too deep, skip all remaining digits
		209	// to avoid a stack overflow attack
		210	if (expect_false (--maxdepth <= 0))
		211	while (((U8)*s - '0') < 10)
		212	++s;
		213
		214	for (;;)
		215	{
		216	U8 dig = (U8)*s - '0';
		217
		218	if (expect_false (dig >= 10))
		219	{
		220	if (dig == (U8)((U8)'.' - (U8)'0'))
		221	{
		222	++s;
		223	json_atof_scan1 (s, accum, expo, 1, maxdepth);
		224	}
		225	else if ((dig \| ' ') == 'e' - '0')
		226	{
		227	int exp2 = 0;
		228	int neg = 0;
		229
		230	++s;
		231
		232	if (*s == '-')
		233	{
		234	++s;
		235	neg = 1;
		236	}
		237	else if (*s == '+')
		238	++s;
		239
		240	while ((dig = (U8)*s - '0') < 10)
		241	exp2 = exp2 * 10 + *s++ - '0';
		242
		243	*expo += neg ? -exp2 : exp2;
		244	}
		245
		246	break;
		247	}
		248
		249	++s;
		250
		251	uaccum = uaccum * 10 + dig;
		252	++eaccum;
		253
		254	// if we have too many digits, then recurse for more
		255	// we actually do this for rather few digits
		256	if (uaccum >= (UV_MAX - 9) / 10)
		257	{
		258	if (postdp) *expo -= eaccum;
		259	json_atof_scan1 (s, accum, expo, postdp, maxdepth);
		260	if (postdp) *expo += eaccum;
		261
		262	break;
		263	}
		264	}
		265
		266	// this relies greatly on the quality of the pow ()
		267	// implementation of the platform, but a good
		268	// implementation is hard to beat.
		269	// (IEEE 754 conformant ones are required to be exact)
		270	if (postdp) *expo -= eaccum;
		271	accum += uaccum Perl_pow (10., *expo);
		272	*expo += eaccum;
		273	}
		274
		275	static NV
		276	json_atof (const char *s)
		277	{
		278	NV accum = 0.;
		279	int expo = 0;
		280	int neg = 0;
		281
		282	if (*s == '-')
		283	{
		284	++s;
		285	neg = 1;
		286	}
		287
		288	// a recursion depth of ten gives us >>500 bits
		289	json_atof_scan1 (s, &accum, &expo, 0, 10);
		290
		291	return neg ? -accum : accum;
		292	}
164	/////////////////////////////////////////////////////////////////////////////	293	/////////////////////////////////////////////////////////////////////////////
165	// encoder	294	// encoder
166		295
167	// structure used for encoding JSON	296	// structure used for encoding JSON
168	typedef struct	297	typedef struct
…		…
170	char *cur; // SvPVX (sv) + current output position	299	char *cur; // SvPVX (sv) + current output position
171	char *end; // SvEND (sv)	300	char *end; // SvEND (sv)
172	SV *sv; // result scalar	301	SV *sv; // result scalar
173	JSON json;	302	JSON json;
174	U32 indent; // indentation level	303	U32 indent; // indentation level
175	U32 maxdepth; // max. indentation/recursion level
176	UV limit; // escape character values >= this value when encoding	304	UV limit; // escape character values >= this value when encoding
177	} enc_t;	305	} enc_t;
178		306
179	INLINE void	307	INLINE void
180	need (enc_t *enc, STRLEN len)	308	need (enc_t *enc, STRLEN len)
181	{	309	{
182	if (expect_false (enc->cur + len >= enc->end))	310	if (expect_false (enc->cur + len >= enc->end))
183	{	311	{
184	STRLEN cur = enc->cur - SvPVX (enc->sv);	312	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
185	SvGROW (enc->sv, cur + len + 1);	313	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
186	enc->cur = SvPVX (enc->sv) + cur;	314	enc->cur = SvPVX (enc->sv) + cur;
187	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	315	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
188	}	316	}
189	}	317	}
190		318
…		…
265	(int)((uch - 0x10000) % 0x400 + 0xDC00));	393	(int)((uch - 0x10000) % 0x400 + 0xDC00));
266	enc->cur += 12;	394	enc->cur += 12;
267	}	395	}
268	else	396	else
269	{	397	{
270	static char hexdigit [16] = "0123456789abcdef";
271	need (enc, len += 5);	398	need (enc, len += 5);
272	*enc->cur++ = '\\';	399	*enc->cur++ = '\\';
273	*enc->cur++ = 'u';	400	*enc->cur++ = 'u';
274	*enc->cur++ = hexdigit [ uch >> 12 ];	401	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
275	*enc->cur++ = hexdigit [(uch >> 8) & 15];	402	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
276	*enc->cur++ = hexdigit [(uch >> 4) & 15];	403	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
277	*enc->cur++ = hexdigit [(uch >> 0) & 15];	404	*enc->cur++ = PL_hexdigit [(uch >> 0) & 15];
278	}	405	}
279		406
280	str += clen;	407	str += clen;
281	}	408	}
282	else if (enc->json.flags & F_LATIN1)	409	else if (enc->json.flags & F_LATIN1)
…		…
353	static void	480	static void
354	encode_av (enc_t enc, AV av)	481	encode_av (enc_t enc, AV av)
355	{	482	{
356	int i, len = av_len (av);	483	int i, len = av_len (av);
357		484
358	if (enc->indent >= enc->maxdepth)	485	if (enc->indent >= enc->json.max_depth)
359	croak ("data structure too deep (hit recursion limit)");	486	croak (ERR_NESTING_EXCEEDED);
360		487
361	encode_ch (enc, '[');	488	encode_ch (enc, '[');
362		489
363	if (len >= 0)	490	if (len >= 0)
364	{	491	{
365	encode_nl (enc); ++enc->indent;	492	encode_nl (enc); ++enc->indent;
366		493
367	for (i = 0; i <= len; ++i)	494	for (i = 0; i <= len; ++i)
…		…
379	encode_comma (enc);	506	encode_comma (enc);
380	}	507	}
381		508
382	encode_nl (enc); --enc->indent; encode_indent (enc);	509	encode_nl (enc); --enc->indent; encode_indent (enc);
383	}	510	}
384		511
385	encode_ch (enc, ']');	512	encode_ch (enc, ']');
386	}	513	}
387		514
388	static void	515	static void
389	encode_hk (enc_t enc, HE he)	516	encode_hk (enc_t enc, HE he)
…		…
393	if (HeKLEN (he) == HEf_SVKEY)	520	if (HeKLEN (he) == HEf_SVKEY)
394	{	521	{
395	SV *sv = HeSVKEY (he);	522	SV *sv = HeSVKEY (he);
396	STRLEN len;	523	STRLEN len;
397	char *str;	524	char *str;
398		525
399	SvGETMAGIC (sv);	526	SvGETMAGIC (sv);
400	str = SvPV (sv, len);	527	str = SvPV (sv, len);
401		528
402	encode_str (enc, str, len, SvUTF8 (sv));	529	encode_str (enc, str, len, SvUTF8 (sv));
403	}	530	}
…		…
439	static void	566	static void
440	encode_hv (enc_t enc, HV hv)	567	encode_hv (enc_t enc, HV hv)
441	{	568	{
442	HE *he;	569	HE *he;
443		570
444	if (enc->indent >= enc->maxdepth)	571	if (enc->indent >= enc->json.max_depth)
445	croak ("data structure too deep (hit recursion limit)");	572	croak (ERR_NESTING_EXCEEDED);
446		573
447	encode_ch (enc, '{');	574	encode_ch (enc, '{');
448		575
449	// for canonical output we have to sort by keys first	576	// for canonical output we have to sort by keys first
450	// actually, this is mostly due to the stupid so-called	577	// actually, this is mostly due to the stupid so-called
451	// security workaround added somewhere in 5.8.x.	578	// security workaround added somewhere in 5.8.x
452	// that randomises hash orderings	579	// that randomises hash orderings
453	if (enc->json.flags & F_CANONICAL)	580	if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv))
454	{	581	{
455	int count = hv_iterinit (hv);	582	int count = hv_iterinit (hv);
456		583
457	if (SvMAGICAL (hv))	584	if (SvMAGICAL (hv))
458	{	585	{
…		…
469	}	596	}
470		597
471	if (count)	598	if (count)
472	{	599	{
473	int i, fast = 1;	600	int i, fast = 1;
474	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	601	HE *hes_stack [STACK_HES];
475	HE *hes = _alloca (count sizeof (HE));	602	HE **hes = hes_stack;
476	#else	603
477	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	604	// allocate larger arrays on the heap
478	#endif	605	if (count > STACK_HES)
		606	{
		607	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		608	hes = (HE **)SvPVX (sv);
		609	}
479		610
480	i = 0;	611	i = 0;
481	while ((he = hv_iternext (hv)))	612	while ((he = hv_iternext (hv)))
482	{	613	{
483	hes [i++] = he;	614	hes [i++] = he;
…		…
552	// encode objects, arrays and special \0=false and \1=true values.	683	// encode objects, arrays and special \0=false and \1=true values.
553	static void	684	static void
554	encode_rv (enc_t enc, SV sv)	685	encode_rv (enc_t enc, SV sv)
555	{	686	{
556	svtype svt;	687	svtype svt;
		688	GV *method;
557		689
558	SvGETMAGIC (sv);	690	SvGETMAGIC (sv);
559	svt = SvTYPE (sv);	691	svt = SvTYPE (sv);
560		692
561	if (expect_false (SvOBJECT (sv)))	693	if (expect_false (SvOBJECT (sv)))
562	{	694	{
563	HV *stash = !JSON_SLOW \|\| json_boolean_stash	695	HV *boolean_stash = !JSON_SLOW \|\| types_boolean_stash
564	? json_boolean_stash	696	? types_boolean_stash
565	: gv_stashpv ("JSON::XS::Boolean", 1);	697	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		698	HV *stash = SvSTASH (sv);
566		699
567	if (SvSTASH (sv) == stash)	700	if (stash == boolean_stash)
568	{	701	{
569	if (SvIV (sv))	702	if (SvIV (sv))
570	encode_str (enc, "true", 4, 0);	703	encode_str (enc, "true", 4, 0);
571	else	704	else
572	encode_str (enc, "false", 5, 0);	705	encode_str (enc, "false", 5, 0);
573	}	706	}
		707	else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
		708	{
		709	int count;
		710	dSP;
		711
		712	ENTER; SAVETMPS; PUSHMARK (SP);
		713	EXTEND (SP, 2);
		714	// we re-bless the reference to get overload and other niceties right
		715	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		716	PUSHs (sv_json);
		717
		718	PUTBACK;
		719	count = call_sv ((SV *)GvCV (method), G_ARRAY);
		720	SPAGAIN;
		721
		722	// catch this surprisingly common error
		723	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		724	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		725
		726	encode_ch (enc, '(');
		727	encode_ch (enc, '"');
		728	encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
		729	encode_ch (enc, '"');
		730	encode_ch (enc, ')');
		731	encode_ch (enc, '[');
		732
		733	while (count)
		734	{
		735	encode_sv (enc, SP[1 - count--]);
		736
		737	if (count)
		738	encode_ch (enc, ',');
		739	}
		740
		741	encode_ch (enc, ']');
		742
		743	PUTBACK;
		744
		745	FREETMPS; LEAVE;
		746	}
		747	else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
		748	{
		749	dSP;
		750
		751	ENTER; SAVETMPS; PUSHMARK (SP);
		752	// we re-bless the reference to get overload and other niceties right
		753	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		754
		755	// calling with G_SCALAR ensures that we always get a 1 return value
		756	PUTBACK;
		757	call_sv ((SV *)GvCV (method), G_SCALAR);
		758	SPAGAIN;
		759
		760	// catch this surprisingly common error
		761	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		762	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		763
		764	sv = POPs;
		765	PUTBACK;
		766
		767	encode_sv (enc, sv);
		768
		769	FREETMPS; LEAVE;
		770	}
		771	else if (enc->json.flags & F_ALLOW_BLESSED)
		772	encode_str (enc, "null", 4, 0);
574	else	773	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",	774	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))));	775	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
621	}
622	}	776	}
623	else if (svt == SVt_PVHV)	777	else if (svt == SVt_PVHV)
624	encode_hv (enc, (HV *)sv);	778	encode_hv (enc, (HV *)sv);
625	else if (svt == SVt_PVAV)	779	else if (svt == SVt_PVAV)
626	encode_av (enc, (AV *)sv);	780	encode_av (enc, (AV *)sv);
…		…
631		785
632	if (len == 1 && *pv == '1')	786	if (len == 1 && *pv == '1')
633	encode_str (enc, "true", 4, 0);	787	encode_str (enc, "true", 4, 0);
634	else if (len == 1 && *pv == '0')	788	else if (len == 1 && *pv == '0')
635	encode_str (enc, "false", 5, 0);	789	encode_str (enc, "false", 5, 0);
		790	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		791	encode_str (enc, "null", 4, 0);
636	else	792	else
637	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	793	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
638	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	794	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
639	}	795	}
		796	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		797	encode_str (enc, "null", 4, 0);
640	else	798	else
641	croak ("encountered %s, but JSON can only represent references to arrays or hashes",	799	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
642	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	800	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
643	}	801	}
644		802
…		…
698	}	856	}
699	else	857	else
700	{	858	{
701	// large integer, use the (rather slow) snprintf way.	859	// large integer, use the (rather slow) snprintf way.
702	need (enc, IVUV_MAXCHARS);	860	need (enc, IVUV_MAXCHARS);
703	enc->cur +=	861	enc->cur +=
704	SvIsUV(sv)	862	SvIsUV(sv)
705	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	863	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
706	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	864	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
707	}	865	}
708	}	866	}
709	else if (SvROK (sv))	867	else if (SvROK (sv))
710	encode_rv (enc, SvRV (sv));	868	encode_rv (enc, SvRV (sv));
711	else if (!SvOK (sv))	869	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
712	encode_str (enc, "null", 4, 0);	870	encode_str (enc, "null", 4, 0);
713	else	871	else
714	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	872	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
715	SvPV_nolen (sv), SvFLAGS (sv));	873	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
716	}	874	}
717		875
718	static SV *	876	static SV *
719	encode_json (SV scalar, JSON json)	877	encode_json (SV scalar, JSON json)
720	{	878	{
…		…
726	enc.json = *json;	884	enc.json = *json;
727	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	885	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
728	enc.cur = SvPVX (enc.sv);	886	enc.cur = SvPVX (enc.sv);
729	enc.end = SvEND (enc.sv);	887	enc.end = SvEND (enc.sv);
730	enc.indent = 0;	888	enc.indent = 0;
731	enc.maxdepth = DEC_DEPTH (enc.json.flags);
732	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL	889	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL
733	: enc.json.flags & F_LATIN1 ? 0x000100UL	890	: enc.json.flags & F_LATIN1 ? 0x000100UL
734	: 0x110000UL;	891	: 0x110000UL;
735		892
736	SvPOK_only (enc.sv);	893	SvPOK_only (enc.sv);
737	encode_sv (&enc, scalar);	894	encode_sv (&enc, scalar);
		895	encode_nl (&enc);
738		896
739	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	897	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
740	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	898	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
741		899
742	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	900	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
…		…
803	if (*dec->cur != ch) \	961	if (*dec->cur != ch) \
804	ERR (# ch " expected"); \	962	ERR (# ch " expected"); \
805	++dec->cur; \	963	++dec->cur; \
806	SE	964	SE
807		965
808	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")	966	#define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED)
809	#define DEC_DEC_DEPTH --dec->depth	967	#define DEC_DEC_DEPTH --dec->depth
810		968
811	static SV decode_sv (dec_t dec);	969	static SV decode_sv (dec_t dec);
812		970
813	static signed char decode_hexdigit[256];	971	static signed char decode_hexdigit[256];
…		…
922	else if (expect_true (ch >= 0x20 && ch < 0x80))	1080	else if (expect_true (ch >= 0x20 && ch < 0x80))
923	*cur++ = ch;	1081	*cur++ = ch;
924	else if (ch >= 0x80)	1082	else if (ch >= 0x80)
925	{	1083	{
926	STRLEN clen;	1084	STRLEN clen;
927	UV uch;
928		1085
929	--dec_cur;	1086	--dec_cur;
930		1087
931	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);	1088	decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
932	if (clen == (STRLEN)-1)	1089	if (clen == (STRLEN)-1)
933	ERR ("malformed UTF-8 character in JSON string");	1090	ERR ("malformed UTF-8 character in JSON string");
934		1091
935	do	1092	do
936	cur++ = dec_cur++;	1093	cur++ = dec_cur++;
…		…
953	{	1110	{
954	STRLEN len = cur - buf;	1111	STRLEN len = cur - buf;
955		1112
956	if (sv)	1113	if (sv)
957	{	1114	{
958	SvGROW (sv, SvCUR (sv) + len + 1);	1115	STRLEN cur = SvCUR (sv);
		1116
		1117	if (SvLEN (sv) <= cur + len)
		1118	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
		1119
959	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1120	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
960	SvCUR_set (sv, SvCUR (sv) + len);	1121	SvCUR_set (sv, SvCUR (sv) + len);
961	}	1122	}
962	else	1123	else
963	sv = newSVpvn (buf, len);	1124	sv = newSVpvn (buf, len);
…		…
1054		1215
1055	// special case the rather common 1..5-digit-int case	1216	// special case the rather common 1..5-digit-int case
1056	if (*start == '-')	1217	if (*start == '-')
1057	switch (len)	1218	switch (len)
1058	{	1219	{
1059	case 2: return newSViv (-( start [1] - '0' * 1));	1220	case 2: return newSViv (-(IV)( start [1] - '0' * 1));
1060	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	1221	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));	1222	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));	1223	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));	1224	case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));
1064	}	1225	}
1065	else	1226	else
1066	switch (len)	1227	switch (len)
1067	{	1228	{
1068	case 1: return newSViv ( start [0] - '0' * 1);	1229	case 1: return newSViv ( start [0] - '0' * 1);
1069	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	1230	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);	1231	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);	1232	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);	1233	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);
1073	}	1234	}
1074		1235
1075	{	1236	{
1076	UV uv;	1237	UV uv;
1077	int numtype = grok_number (start, len, &uv);	1238	int numtype = grok_number (start, len, &uv);
…		…
1086	}	1247	}
1087		1248
1088	len -= *start == '-' ? 1 : 0;	1249	len -= *start == '-' ? 1 : 0;
1089		1250
1090	// does not fit into IV or UV, try NV	1251	// does not fit into IV or UV, try NV
1091	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1252	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	1253	// fits into NV without loss of precision
1097	return newSVnv (Atof (start));	1254	return newSVnv (json_atof (start));
1098		1255
1099	// everything else fails, convert it to a string	1256	// everything else fails, convert it to a string
1100	return newSVpvn (start, dec->cur - start);	1257	return newSVpvn (start, dec->cur - start);
1101	}	1258	}
1102		1259
1103	// loss of precision here	1260	// loss of precision here
1104	return newSVnv (Atof (start));	1261	return newSVnv (json_atof (start));
1105		1262
1106	fail:	1263	fail:
1107	return 0;	1264	return 0;
1108	}	1265	}
1109		1266
…		…
1133	if (*dec->cur == ']')	1290	if (*dec->cur == ']')
1134	{	1291	{
1135	++dec->cur;	1292	++dec->cur;
1136	break;	1293	break;
1137	}	1294	}
1138		1295
1139	if (*dec->cur != ',')	1296	if (*dec->cur != ',')
1140	ERR (", or ] expected while parsing array");	1297	ERR (", or ] expected while parsing array");
1141		1298
1142	++dec->cur;	1299	++dec->cur;
1143		1300
…		…
1278	dSP;	1435	dSP;
1279	int count;	1436	int count;
1280		1437
1281	ENTER; SAVETMPS; PUSHMARK (SP);	1438	ENTER; SAVETMPS; PUSHMARK (SP);
1282	XPUSHs (HeVAL (he));	1439	XPUSHs (HeVAL (he));
		1440	sv_2mortal (sv);
1283		1441
1284	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1442	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1285		1443
1286	if (count == 1)	1444	if (count == 1)
1287	{	1445	{
1288	sv = newSVsv (POPs);	1446	sv = newSVsv (POPs);
1289	FREETMPS; LEAVE;	1447	FREETMPS; LEAVE;
1290	return sv;	1448	return sv;
1291	}	1449	}
1292		1450
		1451	SvREFCNT_inc (sv);
1293	FREETMPS; LEAVE;	1452	FREETMPS; LEAVE;
1294	}	1453	}
1295	}	1454	}
1296		1455
1297	if (dec->json.cb_object)	1456	if (dec->json.cb_object)
…		…
1323	DEC_DEC_DEPTH;	1482	DEC_DEC_DEPTH;
1324	return 0;	1483	return 0;
1325	}	1484	}
1326		1485
1327	static SV *	1486	static SV *
		1487	decode_tag (dec_t *dec)
		1488	{
		1489	SV *tag = 0;
		1490	SV *val = 0;
		1491
		1492	if (!(dec->json.flags & F_ALLOW_TAGS))
		1493	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1494
		1495	++dec->cur;
		1496
		1497	tag = decode_sv (dec);
		1498	if (!tag)
		1499	goto fail;
		1500
		1501	if (!SvPOK (tag))
		1502	ERR ("malformed JSON string, (tag) must be a string");
		1503
		1504	if (*dec->cur != ')')
		1505	ERR (") expected after tag");
		1506
		1507	++dec->cur;
		1508
		1509	val = decode_sv (dec);
		1510	if (!val)
		1511	goto fail;
		1512
		1513	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1514	ERR ("malformed JSON string, tag value must be an array");
		1515
		1516	{
		1517	AV av = (AV )SvRV (val);
		1518	int i, len = av_len (av) + 1;
		1519	HV *stash = gv_stashsv (tag, 0);
		1520	SV *sv;
		1521
		1522	if (!stash)
		1523	ERR ("cannot decode perl-object (package does not exist)");
		1524
		1525	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1526
		1527	if (!method)
		1528	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1529
		1530	dSP;
		1531
		1532	ENTER; SAVETMPS; PUSHMARK (SP);
		1533	EXTEND (SP, len + 2);
		1534	// we re-bless the reference to get overload and other niceties right
		1535	PUSHs (tag);
		1536	PUSHs (sv_json);
		1537
		1538	for (i = 0; i < len; ++i)
		1539	PUSHs (*av_fetch (av, i, 1));
		1540
		1541	PUTBACK;
		1542	call_sv ((SV *)GvCV (method), G_SCALAR);
		1543	SPAGAIN;
		1544
		1545	SvREFCNT_dec (tag);
		1546	SvREFCNT_dec (val);
		1547	sv = SvREFCNT_inc (POPs);
		1548
		1549	PUTBACK;
		1550
		1551	FREETMPS; LEAVE;
		1552
		1553	return sv;
		1554	}
		1555
		1556	fail:
		1557	SvREFCNT_dec (tag);
		1558	SvREFCNT_dec (val);
		1559	return 0;
		1560	}
		1561
		1562	static SV *
1328	decode_sv (dec_t *dec)	1563	decode_sv (dec_t *dec)
1329	{	1564	{
1330	// the beauty of JSON: you need exactly one character lookahead	1565	// the beauty of JSON: you need exactly one character lookahead
1331	// to parse everything.	1566	// to parse everything.
1332	switch (*dec->cur)	1567	switch (*dec->cur)
1333	{	1568	{
1334	case '"': ++dec->cur; return decode_str (dec);	1569	case '"': ++dec->cur; return decode_str (dec);
1335	case '[': ++dec->cur; return decode_av (dec);	1570	case '[': ++dec->cur; return decode_av (dec);
1336	case '{': ++dec->cur; return decode_hv (dec);	1571	case '{': ++dec->cur; return decode_hv (dec);
		1572	case '(': return decode_tag (dec);
1337		1573
1338	case '-':	1574	case '-':
1339	case '0': case '1': case '2': case '3': case '4':	1575	case '0': case '1': case '2': case '3': case '4':
1340	case '5': case '6': case '7': case '8': case '9':	1576	case '5': case '6': case '7': case '8': case '9':
1341	return decode_num (dec);	1577	return decode_num (dec);
…		…
1343	case 't':	1579	case 't':
1344	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1580	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1345	{	1581	{
1346	dec->cur += 4;	1582	dec->cur += 4;
1347	#if JSON_SLOW	1583	#if JSON_SLOW
1348	json_true = get_sv ("JSON::XS::true", 1); SvREADONLY_on (json_true);	1584	types_true = get_bool ("Types::Serialiser::true");
1349	#endif	1585	#endif
1350	return SvREFCNT_inc (json_true);	1586	return newSVsv (types_true);
1351	}	1587	}
1352	else	1588	else
1353	ERR ("'true' expected");	1589	ERR ("'true' expected");
1354		1590
1355	break;	1591	break;
…		…
1357	case 'f':	1593	case 'f':
1358	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1594	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1359	{	1595	{
1360	dec->cur += 5;	1596	dec->cur += 5;
1361	#if JSON_SLOW	1597	#if JSON_SLOW
1362	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1598	types_false = get_bool ("Types::Serialiser::false");
1363	#endif	1599	#endif
1364	return SvREFCNT_inc (json_false);	1600	return newSVsv (types_false);
1365	}	1601	}
1366	else	1602	else
1367	ERR ("'false' expected");	1603	ERR ("'false' expected");
1368		1604
1369	break;	1605	break;
…		…
1378	ERR ("'null' expected");	1614	ERR ("'null' expected");
1379		1615
1380	break;	1616	break;
1381		1617
1382	default:	1618	default:
1383	ERR ("malformed JSON string, neither array, object, number, string or atom");	1619	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1384	break;	1620	break;
1385	}	1621	}
1386		1622
1387	fail:	1623	fail:
1388	return 0;	1624	return 0;
1389	}	1625	}
1390		1626
1391	static SV *	1627	static SV *
1392	decode_json (SV string, JSON json, STRLEN *offset_return)	1628	decode_json (SV string, JSON json, char **offset_return)
1393	{	1629	{
1394	dec_t dec;	1630	dec_t dec;
1395	STRLEN offset;
1396	SV *sv;	1631	SV *sv;
1397		1632
		1633	/* work around bugs in 5.10 where manipulating magic values
		1634	* makes perl ignore the magic in subsequent accesses.
		1635	* also make a copy of non-PV values, to get them into a clean
		1636	* state (SvPV should do that, but it's buggy, see below).
		1637	*/
1398	SvGETMAGIC (string);	1638	/SvGETMAGIC (string);/
		1639	if (SvMAGICAL (string) \|\| !SvPOK (string))
		1640	string = sv_2mortal (newSVsv (string));
		1641
1399	SvUPGRADE (string, SVt_PV);	1642	SvUPGRADE (string, SVt_PV);
1400		1643
1401	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))	1644	/* work around a bug in perl 5.10, which causes SvCUR to fail an
		1645	* assertion with -DDEBUGGING, although SvCUR is documented to
		1646	* return the xpv_cur field which certainly exists after upgrading.
		1647	* according to nicholas clark, calling SvPOK fixes this.
		1648	* But it doesn't fix it, so try another workaround, call SvPV_nolen
		1649	* and hope for the best.
		1650	* Damnit, SvPV_nolen still trips over yet another assertion. This
		1651	* assertion business is seriously broken, try yet another workaround
		1652	* for the broken -DDEBUGGING.
		1653	*/
		1654	{
		1655	#ifdef DEBUGGING
		1656	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
		1657	#else
		1658	STRLEN offset = SvCUR (string);
		1659	#endif
		1660
		1661	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",	1662	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));	1663	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
		1664	}
1404		1665
1405	if (json->flags & F_UTF8)	1666	if (DECODE_WANTS_OCTETS (json))
1406	sv_utf8_downgrade (string, 0);	1667	sv_utf8_downgrade (string, 0);
1407	else	1668	else
1408	sv_utf8_upgrade (string);	1669	sv_utf8_upgrade (string);
1409		1670
1410	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1671	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1411		1672
1412	dec.json = *json;	1673	dec.json = *json;
1413	dec.cur = SvPVX (string);	1674	dec.cur = SvPVX (string);
1414	dec.end = SvEND (string);	1675	dec.end = SvEND (string);
1415	dec.err = 0;	1676	dec.err = 0;
1416	dec.depth = 0;	1677	dec.depth = 0;
1417	dec.maxdepth = DEC_DEPTH (dec.json.flags);
1418		1678
1419	if (dec.json.cb_object \|\| dec.json.cb_sk_object)	1679	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
1420	dec.json.flags \|= F_HOOK;	1680	dec.json.flags \|= F_HOOK;
1421		1681
1422	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1682	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
1423		1683
1424	decode_ws (&dec);	1684	decode_ws (&dec);
1425	sv = decode_sv (&dec);	1685	sv = decode_sv (&dec);
		1686
		1687	if (offset_return)
		1688	*offset_return = dec.cur;
1426		1689
1427	if (!(offset_return \|\| !sv))	1690	if (!(offset_return \|\| !sv))
1428	{	1691	{
1429	// check for trailing garbage	1692	// check for trailing garbage
1430	decode_ws (&dec);	1693	decode_ws (&dec);
…		…
1433	{	1696	{
1434	dec.err = "garbage after JSON object";	1697	dec.err = "garbage after JSON object";
1435	SvREFCNT_dec (sv);	1698	SvREFCNT_dec (sv);
1436	sv = 0;	1699	sv = 0;
1437	}	1700	}
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	}	1701	}
1449		1702
1450	if (!sv)	1703	if (!sv)
1451	{	1704	{
1452	SV *uni = sv_newmortal ();	1705	SV *uni = sv_newmortal ();
…		…
1458	SAVEVPTR (PL_curcop);	1711	SAVEVPTR (PL_curcop);
1459	PL_curcop = &cop;	1712	PL_curcop = &cop;
1460	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1713	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1461	LEAVE;	1714	LEAVE;
1462		1715
1463	croak ("%s, at character offset %d [\"%s\"]",	1716	croak ("%s, at character offset %d (before \"%s\")",
1464	dec.err,	1717	dec.err,
1465	(int)offset,	1718	(int)ptr_to_index (string, dec.cur),
1466	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1719	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1467	}	1720	}
1468		1721
1469	sv = sv_2mortal (sv);	1722	sv = sv_2mortal (sv);
1470		1723
…		…
1479		1732
1480	static void	1733	static void
1481	incr_parse (JSON *self)	1734	incr_parse (JSON *self)
1482	{	1735	{
1483	const char *p = SvPVX (self->incr_text) + self->incr_pos;	1736	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1737
		1738	// the state machine here is a bit convoluted and could be simplified a lot
		1739	// but this would make it slower, so...
1484		1740
1485	for (;;)	1741	for (;;)
1486	{	1742	{
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	1743	//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)	1744	switch (self->incr_mode)
1489	{	1745	{
1490	// only used for intiial whitespace skipping	1746	// only used for initial whitespace skipping
1491	case INCR_M_WS:	1747	case INCR_M_WS:
1492	for (;;)	1748	for (;;)
1493	{	1749	{
1494	if (*p > 0x20)	1750	if (*p > 0x20)
1495	{	1751	{
		1752	if (*p == '#')
		1753	{
		1754	self->incr_mode = INCR_M_C0;
		1755	goto incr_m_c;
		1756	}
		1757	else
		1758	{
1496	self->incr_mode = INCR_M_JSON;	1759	self->incr_mode = INCR_M_JSON;
1497	goto incr_m_json;	1760	goto incr_m_json;
		1761	}
1498	}	1762	}
1499	else if (!*p)	1763	else if (!*p)
1500	goto interrupt;	1764	goto interrupt;
1501		1765
1502	++p;	1766	++p;
…		…
1508	goto interrupt;	1772	goto interrupt;
1509		1773
1510	++p;	1774	++p;
1511	self->incr_mode = INCR_M_STR;	1775	self->incr_mode = INCR_M_STR;
1512	goto incr_m_str;	1776	goto incr_m_str;
		1777
		1778	// inside #-style comments
		1779	case INCR_M_C0:
		1780	case INCR_M_C1:
		1781	incr_m_c:
		1782	for (;;)
		1783	{
		1784	if (*p == '\n')
		1785	{
		1786	self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON;
		1787	break;
		1788	}
		1789	else if (!*p)
		1790	goto interrupt;
		1791
		1792	++p;
		1793	}
		1794
		1795	break;
1513		1796
1514	// inside a string	1797	// inside a string
1515	case INCR_M_STR:	1798	case INCR_M_STR:
1516	incr_m_str:	1799	incr_m_str:
1517	for (;;)	1800	for (;;)
…		…
1568	self->incr_mode = INCR_M_STR;	1851	self->incr_mode = INCR_M_STR;
1569	goto incr_m_str;	1852	goto incr_m_str;
1570		1853
1571	case '[':	1854	case '[':
1572	case '{':	1855	case '{':
		1856	case '(':
1573	++self->incr_nest;	1857	if (++self->incr_nest > self->max_depth)
		1858	croak (ERR_NESTING_EXCEEDED);
1574	break;	1859	break;
1575		1860
1576	case ']':	1861	case ']':
1577	case '}':	1862	case '}':
1578	if (!--self->incr_nest)	1863	if (--self->incr_nest <= 0)
1579	goto interrupt;	1864	goto interrupt;
		1865	break;
		1866
		1867	case ')':
		1868	--self->incr_nest;
		1869	break;
		1870
		1871	case '#':
		1872	self->incr_mode = INCR_M_C1;
		1873	goto incr_m_c;
1580	}	1874	}
1581	}	1875	}
1582	}	1876	}
1583		1877
1584	modechange:	1878	modechange:
1585	;	1879	;
1586	}	1880	}
1587		1881
1588	interrupt:	1882	interrupt:
1589	self->incr_pos = p - SvPVX (self->incr_text);	1883	self->incr_pos = p - SvPVX (self->incr_text);
		1884	//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	1885	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
1591	}	1886	}
1592		1887
1593	/////////////////////////////////////////////////////////////////////////////	1888	/////////////////////////////////////////////////////////////////////////////
1594	// XS interface functions	1889	// XS interface functions
…		…
1604	i >= '0' && i <= '9' ? i - '0'	1899	i >= '0' && i <= '9' ? i - '0'
1605	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1900	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1606	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1901	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1607	: -1;	1902	: -1;
1608		1903
1609	json_stash = gv_stashpv ("JSON::XS" , 1);	1904	json_stash = gv_stashpv ("JSON::XS" , 1);
1610	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	1905	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1611		1906
1612	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );	1907	types_true = get_bool ("Types::Serialiser::true");
1613	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1908	types_false = get_bool ("Types::Serialiser::false");
		1909
		1910	sv_json = newSVpv ("JSON", 0);
		1911	SvREADONLY_on (sv_json);
		1912
		1913	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1614	}	1914	}
1615		1915
1616	PROTOTYPES: DISABLE	1916	PROTOTYPES: DISABLE
1617		1917
1618	void CLONE (...)	1918	void CLONE (...)
1619	CODE:	1919	CODE:
1620	json_stash = 0;	1920	json_stash = 0;
1621	json_boolean_stash = 0;	1921	types_boolean_stash = 0;
1622		1922
1623	void new (char *klass)	1923	void new (char *klass)
1624	PPCODE:	1924	PPCODE:
1625	{	1925	{
1626	SV *pv = NEWSV (0, sizeof (JSON));	1926	SV *pv = NEWSV (0, sizeof (JSON));
1627	SvPOK_only (pv);	1927	SvPOK_only (pv);
1628	Zero (SvPVX (pv), 1, JSON);	1928	json_init ((JSON *)SvPVX (pv));
1629	((JSON *)SvPVX (pv))->flags = F_DEFAULT;
1630	XPUSHs (sv_2mortal (sv_bless (	1929	XPUSHs (sv_2mortal (sv_bless (
1631	newRV_noinc (pv),	1930	newRV_noinc (pv),
1632	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	1931	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1633	)));	1932	)));
1634	}	1933	}
…		…
1646	allow_nonref = F_ALLOW_NONREF	1945	allow_nonref = F_ALLOW_NONREF
1647	shrink = F_SHRINK	1946	shrink = F_SHRINK
1648	allow_blessed = F_ALLOW_BLESSED	1947	allow_blessed = F_ALLOW_BLESSED
1649	convert_blessed = F_CONV_BLESSED	1948	convert_blessed = F_CONV_BLESSED
1650	relaxed = F_RELAXED	1949	relaxed = F_RELAXED
		1950	allow_unknown = F_ALLOW_UNKNOWN
		1951	allow_tags = F_ALLOW_TAGS
1651	PPCODE:	1952	PPCODE:
1652	{	1953	{
1653	if (enable)	1954	if (enable)
1654	self->flags \|= ix;	1955	self->flags \|= ix;
1655	else	1956	else
…		…
1670	get_allow_nonref = F_ALLOW_NONREF	1971	get_allow_nonref = F_ALLOW_NONREF
1671	get_shrink = F_SHRINK	1972	get_shrink = F_SHRINK
1672	get_allow_blessed = F_ALLOW_BLESSED	1973	get_allow_blessed = F_ALLOW_BLESSED
1673	get_convert_blessed = F_CONV_BLESSED	1974	get_convert_blessed = F_CONV_BLESSED
1674	get_relaxed = F_RELAXED	1975	get_relaxed = F_RELAXED
		1976	get_allow_unknown = F_ALLOW_UNKNOWN
		1977	get_allow_tags = F_ALLOW_TAGS
1675	PPCODE:	1978	PPCODE:
1676	XPUSHs (boolSV (self->flags & ix));	1979	XPUSHs (boolSV (self->flags & ix));
1677		1980
1678	void max_depth (JSON *self, UV max_depth = 0x80000000UL)	1981	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1679	PPCODE:	1982	PPCODE:
1680	{	1983	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));	1984	XPUSHs (ST (0));
1691	}
1692		1985
1693	U32 get_max_depth (JSON *self)	1986	U32 get_max_depth (JSON *self)
1694	CODE:	1987	CODE:
1695	RETVAL = DEC_DEPTH (self->flags);	1988	RETVAL = self->max_depth;
1696	OUTPUT:	1989	OUTPUT:
1697	RETVAL	1990	RETVAL
1698		1991
1699	void max_size (JSON *self, UV max_size = 0)	1992	void max_size (JSON *self, U32 max_size = 0)
1700	PPCODE:	1993	PPCODE:
1701	{	1994	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));	1995	XPUSHs (ST (0));
1713	}
1714		1996
1715	int get_max_size (JSON *self)	1997	int get_max_size (JSON *self)
1716	CODE:	1998	CODE:
1717	RETVAL = DEC_SIZE (self->flags);	1999	RETVAL = self->max_size;
1718	OUTPUT:	2000	OUTPUT:
1719	RETVAL	2001	RETVAL
1720		2002
1721	void filter_json_object (JSON self, SV cb = &PL_sv_undef)	2003	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1722	PPCODE:	2004	PPCODE:
…		…
1728	}	2010	}
1729		2011
1730	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2012	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1731	PPCODE:	2013	PPCODE:
1732	{	2014	{
1733	if (!self->cb_sk_object)	2015	if (!self->cb_sk_object)
1734	self->cb_sk_object = newHV ();	2016	self->cb_sk_object = newHV ();
1735		2017
1736	if (SvOK (cb))	2018	if (SvOK (cb))
1737	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2019	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1738	else	2020	else
…		…
1749	XPUSHs (ST (0));	2031	XPUSHs (ST (0));
1750	}	2032	}
1751		2033
1752	void encode (JSON self, SV scalar)	2034	void encode (JSON self, SV scalar)
1753	PPCODE:	2035	PPCODE:
1754	XPUSHs (encode_json (scalar, self));	2036	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2037	XPUSHs (scalar);
1755		2038
1756	void decode (JSON self, SV jsonstr)	2039	void decode (JSON self, SV jsonstr)
1757	PPCODE:	2040	PPCODE:
1758	XPUSHs (decode_json (jsonstr, self, 0));	2041	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2042	XPUSHs (jsonstr);
1759		2043
1760	void decode_prefix (JSON self, SV jsonstr)	2044	void decode_prefix (JSON self, SV jsonstr)
1761	PPCODE:	2045	PPCODE:
1762	{	2046	{
1763	STRLEN offset;	2047	SV *sv;
		2048	char *offset;
		2049	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1764	EXTEND (SP, 2);	2050	EXTEND (SP, 2);
1765	PUSHs (decode_json (jsonstr, self, &offset));	2051	PUSHs (sv);
1766	PUSHs (sv_2mortal (newSVuv (offset)));	2052	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));
1767	}	2053	}
1768		2054
1769	void incr_parse (JSON self, SV jsonstr = 0)	2055	void incr_parse (JSON self, SV jsonstr = 0)
1770	PPCODE:	2056	PPCODE:
1771	{	2057	{
1772	if (!self->incr_text)	2058	if (!self->incr_text)
1773	self->incr_text = newSVpvn ("", 0);	2059	self->incr_text = newSVpvn ("", 0);
		2060
		2061	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2062	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2063	if (DECODE_WANTS_OCTETS (self))
		2064	{
		2065	if (self->incr_pos)
		2066	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2067	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2068
		2069	sv_utf8_downgrade (self->incr_text, 0);
		2070	}
		2071	else
		2072	{
		2073	sv_utf8_upgrade (self->incr_text);
		2074
		2075	if (self->incr_pos)
		2076	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2077	- (U8 *)SvPVX (self->incr_text);
		2078	}
1774		2079
1775	// append data, if any	2080	// append data, if any
1776	if (jsonstr)	2081	if (jsonstr)
1777	{	2082	{
		2083	/* make sure both strings have same encoding */
1778	if (SvUTF8 (jsonstr) && !SvUTF8 (self->incr_text))	2084	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
		2085	if (SvUTF8 (jsonstr))
		2086	sv_utf8_downgrade (jsonstr, 0);
1779	{	2087	else
1780	/* utf-8-ness differs, need to upgrade */
1781	sv_utf8_upgrade (self->incr_text);	2088	sv_utf8_upgrade (jsonstr);
1782		2089
1783	if (self->incr_pos)	2090	/* 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	{	2091	{
1789	STRLEN len;	2092	STRLEN len;
1790	const char *str = SvPV (jsonstr, len);	2093	const char *str = SvPV (jsonstr, len);
1791	SvGROW (self->incr_text, SvCUR (self->incr_text) + len + 1);	2094	STRLEN cur = SvCUR (self->incr_text);
		2095
		2096	if (SvLEN (self->incr_text) <= cur + len)
		2097	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
		2098
1792	Move (str, SvEND (self->incr_text), len, char);	2099	Move (str, SvEND (self->incr_text), len, char);
1793	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);	2100	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	2101	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1795	}	2102	}
1796	}	2103	}
1797		2104
1798	if (GIMME_V != G_VOID)	2105	if (GIMME_V != G_VOID)
1799	do	2106	do
1800	{	2107	{
		2108	SV *sv;
1801	STRLEN offset;	2109	char *offset;
1802
1803	incr_parse (self);
1804		2110
1805	if (!INCR_DONE (self))	2111	if (!INCR_DONE (self))
		2112	{
		2113	incr_parse (self);
		2114
		2115	if (self->incr_pos > self->max_size && self->max_size)
		2116	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		2117	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
		2118
		2119	if (!INCR_DONE (self))
		2120	{
		2121	// as an optimisation, do not accumulate white space in the incr buffer
		2122	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2123	{
		2124	self->incr_pos = 0;
		2125	SvCUR_set (self->incr_text, 0);
		2126	}
		2127
1806	break;	2128	break;
		2129	}
		2130	}
1807		2131
1808	XPUSHs (decode_json (self->incr_text, self, &offset));	2132	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2133	XPUSHs (sv);
1809		2134
1810	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + offset);
1811	self->incr_pos -= offset;	2135	self->incr_pos -= offset - SvPVX (self->incr_text);
1812	self->incr_nest = 0;	2136	self->incr_nest = 0;
1813	self->incr_mode = 0;	2137	self->incr_mode = 0;
		2138
		2139	sv_chop (self->incr_text, offset);
1814	}	2140	}
1815	while (GIMME_V == G_ARRAY);	2141	while (GIMME_V == G_ARRAY);
1816	}	2142	}
1817		2143
1818	SV incr_text (JSON self)	2144	SV incr_text (JSON self)
1819	ATTRS: lvalue	2145	ATTRS: lvalue
1820	CODE:	2146	CODE:
1821	{	2147	{
1822	if (self->incr_pos)	2148	if (self->incr_pos)
1823	croak ("incr_text can only be called after a successful incr_parse call in scalar context %d", self->incr_pos);//D	2149	croak ("incr_text can not be called when the incremental parser already started parsing");
1824		2150
1825	RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef;	2151	RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef;
1826	}	2152	}
1827	OUTPUT:	2153	OUTPUT:
1828	RETVAL	2154	RETVAL
		2155
		2156	void incr_skip (JSON *self)
		2157	CODE:
		2158	{
		2159	if (self->incr_pos)
		2160	{
		2161	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos);
		2162	self->incr_pos = 0;
		2163	self->incr_nest = 0;
		2164	self->incr_mode = 0;
		2165	}
		2166	}
		2167
		2168	void incr_reset (JSON *self)
		2169	CODE:
		2170	{
		2171	SvREFCNT_dec (self->incr_text);
		2172	self->incr_text = 0;
		2173	self->incr_pos = 0;
		2174	self->incr_nest = 0;
		2175	self->incr_mode = 0;
		2176	}
1829		2177
1830	void DESTROY (JSON *self)	2178	void DESTROY (JSON *self)
1831	CODE:	2179	CODE:
1832	SvREFCNT_dec (self->cb_sk_object);	2180	SvREFCNT_dec (self->cb_sk_object);
1833	SvREFCNT_dec (self->cb_object);	2181	SvREFCNT_dec (self->cb_object);
1834	SvREFCNT_dec (self->incr_text);	2182	SvREFCNT_dec (self->incr_text);
1835		2183
1836	PROTOTYPES: ENABLE	2184	PROTOTYPES: ENABLE
1837		2185
1838	void encode_json (SV *scalar)	2186	void encode_json (SV *scalar)
1839	ALIAS:
1840	to_json_ = 0
1841	encode_json = F_UTF8
1842	PPCODE:	2187	PPCODE:
1843	{	2188	{
1844	JSON json = { F_DEFAULT \| ix };	2189	JSON json;
1845	XPUSHs (encode_json (scalar, &json));	2190	json_init (&json);
		2191	json.flags \|= F_UTF8;
		2192	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2193	XPUSHs (scalar);
1846	}	2194	}
1847		2195
1848	void decode_json (SV *jsonstr)	2196	void decode_json (SV *jsonstr)
1849	ALIAS:
1850	from_json_ = 0
1851	decode_json = F_UTF8
1852	PPCODE:	2197	PPCODE:
1853	{	2198	{
1854	JSON json = { F_DEFAULT \| ix };	2199	JSON json;
1855	XPUSHs (decode_json (jsonstr, &json, 0));	2200	json_init (&json);
		2201	json.flags \|= F_UTF8;
		2202	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2203	XPUSHs (jsonstr);
1856	}	2204	}
1857		2205
1858

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Comparing JSON-XS/XS.xs (file contents): Revision 1.78 by root, Tue Mar 25 19:31:02 2008 UTC vs. Revision 1.120 by root, Mon Oct 28 23:23:10 2013 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.78 by root, Tue Mar 25 19:31:02 2008 UTC vs.
Revision 1.120 by root, Mon Oct 28 23:23:10 2013 UTC