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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.75 by root, Wed Mar 19 15:37:54 2008 UTC vs.
Revision 1.118 by root, Fri Oct 25 20:27:57 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 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	38	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
42		39
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	40	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
47	#define F_DEFAULT (9UL << S_MAXDEPTH)
48		41
49	#define INIT_SIZE 32 // initial scalar size to be allocated	42	#define INIT_SIZE 32 // initial scalar size to be allocated
50	#define INDENT_STEP 3 // spaces per indentation level	43	#define INDENT_STEP 3 // spaces per indentation level
51		44
52	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size	45	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
		46
		47	#define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8)
53		48
54	#define SB do {	49	#define SB do {
55	#define SE } while (0)	50	#define SE } while (0)
56		51
57	#if __GNUC__ >= 3	52	#if __GNUC__ >= 3
…		…
67		62
68	#define IN_RANGE_INC(type,val,beg,end) \	63	#define IN_RANGE_INC(type,val,beg,end) \
69	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	64	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
70	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	65	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
71		66
		67	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"
		68
72	#ifdef USE_ITHREADS	69	#ifdef USE_ITHREADS
73	# define JSON_SLOW 1	70	# define JSON_SLOW 1
74	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))	71	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))
75	#else	72	#else
76	# define JSON_SLOW 0	73	# define JSON_SLOW 0
77	# define JSON_STASH json_stash	74	# define JSON_STASH json_stash
78	#endif	75	#endif
79		76
		77	// the amount of HEs to allocate on the stack, when sorting keys
		78	#define STACK_HES 64
		79
80	static HV json_stash, json_boolean_stash; // JSON::XS::	80	static HV json_stash, json_boolean_stash; // JSON::XS::
81	static SV json_true, json_false;	81	static SV json_true, json_false;
82		82
		83	enum {
		84	INCR_M_WS = 0, // initial whitespace skipping, must be 0
		85	INCR_M_STR, // inside string
		86	INCR_M_BS, // inside backslash
		87	INCR_M_C0, // inside comment in initial whitespace sequence
		88	INCR_M_C1, // inside comment in other places
		89	INCR_M_JSON // outside anything, count nesting
		90	};
		91
		92	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)
		93
83	typedef struct {	94	typedef struct {
84	U32 flags;	95	U32 flags;
		96	U32 max_depth;
		97	STRLEN max_size;
		98
85	SV *cb_object;	99	SV *cb_object;
86	HV *cb_sk_object;	100	HV *cb_sk_object;
		101
		102	// for the incremental parser
		103	SV *incr_text; // the source text so far
		104	STRLEN incr_pos; // the current offset into the text
		105	int incr_nest; // {[]}-nesting level
		106	unsigned char incr_mode;
87	} JSON;	107	} JSON;
		108
		109	INLINE void
		110	json_init (JSON *json)
		111	{
		112	Zero (json, 1, JSON);
		113	json->max_depth = 512;
		114	}
88		115
89	/////////////////////////////////////////////////////////////////////////////	116	/////////////////////////////////////////////////////////////////////////////
90	// utility functions	117	// utility functions
91		118
		119	INLINE SV *
		120	get_bool (const char *name)
		121	{
		122	SV *sv = get_sv (name, 1);
		123
		124	SvREADONLY_on (sv);
		125	SvREADONLY_on (SvRV (sv));
		126
		127	return sv;
		128	}
		129
92	INLINE void	130	INLINE void
93	shrink (SV *sv)	131	shrink (SV *sv)
94	{	132	{
95	sv_utf8_downgrade (sv, 1);	133	sv_utf8_downgrade (sv, 1);
		134
96	if (SvLEN (sv) > SvCUR (sv) + 1)	135	if (SvLEN (sv) > SvCUR (sv) + 1)
97	{	136	{
98	#ifdef SvPV_shrink_to_cur	137	#ifdef SvPV_shrink_to_cur
99	SvPV_shrink_to_cur (sv);	138	SvPV_shrink_to_cur (sv);
100	#elif defined (SvPV_renew)	139	#elif defined (SvPV_renew)
…		…
144	*s++ = 0x80 \| ( ch & 0x3f);	183	*s++ = 0x80 \| ( ch & 0x3f);
145		184
146	return s;	185	return s;
147	}	186	}
148		187
		188	// convert offset pointer to character index, sv must be string
		189	static STRLEN
		190	ptr_to_index (SV sv, char offset)
		191	{
		192	return SvUTF8 (sv)
		193	? utf8_distance (offset, SvPVX (sv))
		194	: offset - SvPVX (sv);
		195	}
		196
		197	/////////////////////////////////////////////////////////////////////////////
		198	// fp hell
		199
		200	// scan a group of digits, and a trailing exponent
		201	static void
		202	json_atof_scan1 (const char s, NV accum, int *expo, int postdp, int maxdepth)
		203	{
		204	UV uaccum = 0;
		205	int eaccum = 0;
		206
		207	// if we recurse too deep, skip all remaining digits
		208	// to avoid a stack overflow attack
		209	if (expect_false (--maxdepth <= 0))
		210	while (((U8)*s - '0') < 10)
		211	++s;
		212
		213	for (;;)
		214	{
		215	U8 dig = (U8)*s - '0';
		216
		217	if (expect_false (dig >= 10))
		218	{
		219	if (dig == (U8)((U8)'.' - (U8)'0'))
		220	{
		221	++s;
		222	json_atof_scan1 (s, accum, expo, 1, maxdepth);
		223	}
		224	else if ((dig \| ' ') == 'e' - '0')
		225	{
		226	int exp2 = 0;
		227	int neg = 0;
		228
		229	++s;
		230
		231	if (*s == '-')
		232	{
		233	++s;
		234	neg = 1;
		235	}
		236	else if (*s == '+')
		237	++s;
		238
		239	while ((dig = (U8)*s - '0') < 10)
		240	exp2 = exp2 * 10 + *s++ - '0';
		241
		242	*expo += neg ? -exp2 : exp2;
		243	}
		244
		245	break;
		246	}
		247
		248	++s;
		249
		250	uaccum = uaccum * 10 + dig;
		251	++eaccum;
		252
		253	// if we have too many digits, then recurse for more
		254	// we actually do this for rather few digits
		255	if (uaccum >= (UV_MAX - 9) / 10)
		256	{
		257	if (postdp) *expo -= eaccum;
		258	json_atof_scan1 (s, accum, expo, postdp, maxdepth);
		259	if (postdp) *expo += eaccum;
		260
		261	break;
		262	}
		263	}
		264
		265	// this relies greatly on the quality of the pow ()
		266	// implementation of the platform, but a good
		267	// implementation is hard to beat.
		268	// (IEEE 754 conformant ones are required to be exact)
		269	if (postdp) *expo -= eaccum;
		270	accum += uaccum Perl_pow (10., *expo);
		271	*expo += eaccum;
		272	}
		273
		274	static NV
		275	json_atof (const char *s)
		276	{
		277	NV accum = 0.;
		278	int expo = 0;
		279	int neg = 0;
		280
		281	if (*s == '-')
		282	{
		283	++s;
		284	neg = 1;
		285	}
		286
		287	// a recursion depth of ten gives us >>500 bits
		288	json_atof_scan1 (s, &accum, &expo, 0, 10);
		289
		290	return neg ? -accum : accum;
		291	}
149	/////////////////////////////////////////////////////////////////////////////	292	/////////////////////////////////////////////////////////////////////////////
150	// encoder	293	// encoder
151		294
152	// structure used for encoding JSON	295	// structure used for encoding JSON
153	typedef struct	296	typedef struct
…		…
155	char *cur; // SvPVX (sv) + current output position	298	char *cur; // SvPVX (sv) + current output position
156	char *end; // SvEND (sv)	299	char *end; // SvEND (sv)
157	SV *sv; // result scalar	300	SV *sv; // result scalar
158	JSON json;	301	JSON json;
159	U32 indent; // indentation level	302	U32 indent; // indentation level
160	U32 maxdepth; // max. indentation/recursion level
161	UV limit; // escape character values >= this value when encoding	303	UV limit; // escape character values >= this value when encoding
162	} enc_t;	304	} enc_t;
163		305
164	INLINE void	306	INLINE void
165	need (enc_t *enc, STRLEN len)	307	need (enc_t *enc, STRLEN len)
166	{	308	{
167	if (expect_false (enc->cur + len >= enc->end))	309	if (expect_false (enc->cur + len >= enc->end))
168	{	310	{
169	STRLEN cur = enc->cur - SvPVX (enc->sv);	311	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
170	SvGROW (enc->sv, cur + len + 1);	312	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
171	enc->cur = SvPVX (enc->sv) + cur;	313	enc->cur = SvPVX (enc->sv) + cur;
172	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	314	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
173	}	315	}
174	}	316	}
175		317
…		…
250	(int)((uch - 0x10000) % 0x400 + 0xDC00));	392	(int)((uch - 0x10000) % 0x400 + 0xDC00));
251	enc->cur += 12;	393	enc->cur += 12;
252	}	394	}
253	else	395	else
254	{	396	{
255	static char hexdigit [16] = "0123456789abcdef";
256	need (enc, len += 5);	397	need (enc, len += 5);
257	*enc->cur++ = '\\';	398	*enc->cur++ = '\\';
258	*enc->cur++ = 'u';	399	*enc->cur++ = 'u';
259	*enc->cur++ = hexdigit [ uch >> 12 ];	400	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
260	*enc->cur++ = hexdigit [(uch >> 8) & 15];	401	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
261	*enc->cur++ = hexdigit [(uch >> 4) & 15];	402	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
262	*enc->cur++ = hexdigit [(uch >> 0) & 15];	403	*enc->cur++ = PL_hexdigit [(uch >> 0) & 15];
263	}	404	}
264		405
265	str += clen;	406	str += clen;
266	}	407	}
267	else if (enc->json.flags & F_LATIN1)	408	else if (enc->json.flags & F_LATIN1)
…		…
338	static void	479	static void
339	encode_av (enc_t enc, AV av)	480	encode_av (enc_t enc, AV av)
340	{	481	{
341	int i, len = av_len (av);	482	int i, len = av_len (av);
342		483
343	if (enc->indent >= enc->maxdepth)	484	if (enc->indent >= enc->json.max_depth)
344	croak ("data structure too deep (hit recursion limit)");	485	croak (ERR_NESTING_EXCEEDED);
345		486
346	encode_ch (enc, '[');	487	encode_ch (enc, '[');
347		488
348	if (len >= 0)	489	if (len >= 0)
349	{	490	{
350	encode_nl (enc); ++enc->indent;	491	encode_nl (enc); ++enc->indent;
351		492
352	for (i = 0; i <= len; ++i)	493	for (i = 0; i <= len; ++i)
…		…
364	encode_comma (enc);	505	encode_comma (enc);
365	}	506	}
366		507
367	encode_nl (enc); --enc->indent; encode_indent (enc);	508	encode_nl (enc); --enc->indent; encode_indent (enc);
368	}	509	}
369		510
370	encode_ch (enc, ']');	511	encode_ch (enc, ']');
371	}	512	}
372		513
373	static void	514	static void
374	encode_hk (enc_t enc, HE he)	515	encode_hk (enc_t enc, HE he)
…		…
378	if (HeKLEN (he) == HEf_SVKEY)	519	if (HeKLEN (he) == HEf_SVKEY)
379	{	520	{
380	SV *sv = HeSVKEY (he);	521	SV *sv = HeSVKEY (he);
381	STRLEN len;	522	STRLEN len;
382	char *str;	523	char *str;
383		524
384	SvGETMAGIC (sv);	525	SvGETMAGIC (sv);
385	str = SvPV (sv, len);	526	str = SvPV (sv, len);
386		527
387	encode_str (enc, str, len, SvUTF8 (sv));	528	encode_str (enc, str, len, SvUTF8 (sv));
388	}	529	}
…		…
423		564
424	static void	565	static void
425	encode_hv (enc_t enc, HV hv)	566	encode_hv (enc_t enc, HV hv)
426	{	567	{
427	HE *he;	568	HE *he;
428	int count;
429		569
430	if (enc->indent >= enc->maxdepth)	570	if (enc->indent >= enc->json.max_depth)
431	croak ("data structure too deep (hit recursion limit)");	571	croak (ERR_NESTING_EXCEEDED);
432		572
433	encode_ch (enc, '{');	573	encode_ch (enc, '{');
434		574
435	// for canonical output we have to sort by keys first	575	// for canonical output we have to sort by keys first
436	// actually, this is mostly due to the stupid so-called	576	// actually, this is mostly due to the stupid so-called
437	// security workaround added somewhere in 5.8.x.	577	// security workaround added somewhere in 5.8.x
438	// that randomises hash orderings	578	// that randomises hash orderings
439	if (enc->json.flags & F_CANONICAL)	579	if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv))
440	{	580	{
441	int count = hv_iterinit (hv);	581	int count = hv_iterinit (hv);
442		582
443	if (SvMAGICAL (hv))	583	if (SvMAGICAL (hv))
444	{	584	{
…		…
455	}	595	}
456		596
457	if (count)	597	if (count)
458	{	598	{
459	int i, fast = 1;	599	int i, fast = 1;
460	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	600	HE *hes_stack [STACK_HES];
461	HE *hes = _alloca (count sizeof (HE));	601	HE **hes = hes_stack;
462	#else	602
463	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	603	// allocate larger arrays on the heap
464	#endif	604	if (count > STACK_HES)
		605	{
		606	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		607	hes = (HE **)SvPVX (sv);
		608	}
465		609
466	i = 0;	610	i = 0;
467	while ((he = hv_iternext (hv)))	611	while ((he = hv_iternext (hv)))
468	{	612	{
469	hes [i++] = he;	613	hes [i++] = he;
…		…
617		761
618	if (len == 1 && *pv == '1')	762	if (len == 1 && *pv == '1')
619	encode_str (enc, "true", 4, 0);	763	encode_str (enc, "true", 4, 0);
620	else if (len == 1 && *pv == '0')	764	else if (len == 1 && *pv == '0')
621	encode_str (enc, "false", 5, 0);	765	encode_str (enc, "false", 5, 0);
		766	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		767	encode_str (enc, "null", 4, 0);
622	else	768	else
623	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	769	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
624	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	770	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
625	}	771	}
		772	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		773	encode_str (enc, "null", 4, 0);
626	else	774	else
627	croak ("encountered %s, but JSON can only represent references to arrays or hashes",	775	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
628	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	776	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
629	}	777	}
630		778
…		…
684	}	832	}
685	else	833	else
686	{	834	{
687	// large integer, use the (rather slow) snprintf way.	835	// large integer, use the (rather slow) snprintf way.
688	need (enc, IVUV_MAXCHARS);	836	need (enc, IVUV_MAXCHARS);
689	enc->cur +=	837	enc->cur +=
690	SvIsUV(sv)	838	SvIsUV(sv)
691	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	839	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
692	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	840	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
693	}	841	}
694	}	842	}
695	else if (SvROK (sv))	843	else if (SvROK (sv))
696	encode_rv (enc, SvRV (sv));	844	encode_rv (enc, SvRV (sv));
697	else if (!SvOK (sv))	845	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
698	encode_str (enc, "null", 4, 0);	846	encode_str (enc, "null", 4, 0);
699	else	847	else
700	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	848	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
701	SvPV_nolen (sv), SvFLAGS (sv));	849	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
702	}	850	}
703		851
704	static SV *	852	static SV *
705	encode_json (SV scalar, JSON json)	853	encode_json (SV scalar, JSON json)
706	{	854	{
…		…
712	enc.json = *json;	860	enc.json = *json;
713	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	861	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
714	enc.cur = SvPVX (enc.sv);	862	enc.cur = SvPVX (enc.sv);
715	enc.end = SvEND (enc.sv);	863	enc.end = SvEND (enc.sv);
716	enc.indent = 0;	864	enc.indent = 0;
717	enc.maxdepth = DEC_DEPTH (enc.json.flags);
718	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL	865	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL
719	: enc.json.flags & F_LATIN1 ? 0x000100UL	866	: enc.json.flags & F_LATIN1 ? 0x000100UL
720	: 0x110000UL;	867	: 0x110000UL;
721		868
722	SvPOK_only (enc.sv);	869	SvPOK_only (enc.sv);
723	encode_sv (&enc, scalar);	870	encode_sv (&enc, scalar);
		871	encode_nl (&enc);
724		872
725	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	873	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
726	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	874	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
727		875
728	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	876	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
…		…
789	if (*dec->cur != ch) \	937	if (*dec->cur != ch) \
790	ERR (# ch " expected"); \	938	ERR (# ch " expected"); \
791	++dec->cur; \	939	++dec->cur; \
792	SE	940	SE
793		941
794	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")	942	#define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED)
795	#define DEC_DEC_DEPTH --dec->depth	943	#define DEC_DEC_DEPTH --dec->depth
796		944
797	static SV decode_sv (dec_t dec);	945	static SV decode_sv (dec_t dec);
798		946
799	static signed char decode_hexdigit[256];	947	static signed char decode_hexdigit[256];
…		…
908	else if (expect_true (ch >= 0x20 && ch < 0x80))	1056	else if (expect_true (ch >= 0x20 && ch < 0x80))
909	*cur++ = ch;	1057	*cur++ = ch;
910	else if (ch >= 0x80)	1058	else if (ch >= 0x80)
911	{	1059	{
912	STRLEN clen;	1060	STRLEN clen;
913	UV uch;
914		1061
915	--dec_cur;	1062	--dec_cur;
916		1063
917	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);	1064	decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
918	if (clen == (STRLEN)-1)	1065	if (clen == (STRLEN)-1)
919	ERR ("malformed UTF-8 character in JSON string");	1066	ERR ("malformed UTF-8 character in JSON string");
920		1067
921	do	1068	do
922	cur++ = dec_cur++;	1069	cur++ = dec_cur++;
…		…
939	{	1086	{
940	STRLEN len = cur - buf;	1087	STRLEN len = cur - buf;
941		1088
942	if (sv)	1089	if (sv)
943	{	1090	{
944	SvGROW (sv, SvCUR (sv) + len + 1);	1091	STRLEN cur = SvCUR (sv);
		1092
		1093	if (SvLEN (sv) <= cur + len)
		1094	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
		1095
945	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1096	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
946	SvCUR_set (sv, SvCUR (sv) + len);	1097	SvCUR_set (sv, SvCUR (sv) + len);
947	}	1098	}
948	else	1099	else
949	sv = newSVpvn (buf, len);	1100	sv = newSVpvn (buf, len);
…		…
1040		1191
1041	// special case the rather common 1..5-digit-int case	1192	// special case the rather common 1..5-digit-int case
1042	if (*start == '-')	1193	if (*start == '-')
1043	switch (len)	1194	switch (len)
1044	{	1195	{
1045	case 2: return newSViv (-( start [1] - '0' * 1));	1196	case 2: return newSViv (-(IV)( start [1] - '0' * 1));
1046	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	1197	case 3: return newSViv (-(IV)( start [1] * 10 + start [2] - '0' * 11));
1047	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));	1198	case 4: return newSViv (-(IV)( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
1048	case 5: return newSViv (-( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));	1199	case 5: return newSViv (-(IV)( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
1049	case 6: return newSViv (-(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));	1200	case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));
1050	}	1201	}
1051	else	1202	else
1052	switch (len)	1203	switch (len)
1053	{	1204	{
1054	case 1: return newSViv ( start [0] - '0' * 1);	1205	case 1: return newSViv ( start [0] - '0' * 1);
1055	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	1206	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
1056	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);	1207	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
1057	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);	1208	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
1058	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);	1209	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);
1059	}	1210	}
1060		1211
1061	{	1212	{
1062	UV uv;	1213	UV uv;
1063	int numtype = grok_number (start, len, &uv);	1214	int numtype = grok_number (start, len, &uv);
…		…
1072	}	1223	}
1073		1224
1074	len -= *start == '-' ? 1 : 0;	1225	len -= *start == '-' ? 1 : 0;
1075		1226
1076	// does not fit into IV or UV, try NV	1227	// does not fit into IV or UV, try NV
1077	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1228	if (len <= NV_DIG)
1078	#if defined (LDBL_DIG)
1079	\|\| (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
1080	#endif
1081	)
1082	// fits into NV without loss of precision	1229	// fits into NV without loss of precision
1083	return newSVnv (Atof (start));	1230	return newSVnv (json_atof (start));
1084		1231
1085	// everything else fails, convert it to a string	1232	// everything else fails, convert it to a string
1086	return newSVpvn (start, dec->cur - start);	1233	return newSVpvn (start, dec->cur - start);
1087	}	1234	}
1088		1235
1089	// loss of precision here	1236	// loss of precision here
1090	return newSVnv (Atof (start));	1237	return newSVnv (json_atof (start));
1091		1238
1092	fail:	1239	fail:
1093	return 0;	1240	return 0;
1094	}	1241	}
1095		1242
…		…
1119	if (*dec->cur == ']')	1266	if (*dec->cur == ']')
1120	{	1267	{
1121	++dec->cur;	1268	++dec->cur;
1122	break;	1269	break;
1123	}	1270	}
1124		1271
1125	if (*dec->cur != ',')	1272	if (*dec->cur != ',')
1126	ERR (", or ] expected while parsing array");	1273	ERR (", or ] expected while parsing array");
1127		1274
1128	++dec->cur;	1275	++dec->cur;
1129		1276
…		…
1171	char *p = dec->cur;	1318	char *p = dec->cur;
1172	char *e = p + 24; // only try up to 24 bytes	1319	char *e = p + 24; // only try up to 24 bytes
1173		1320
1174	for (;;)	1321	for (;;)
1175	{	1322	{
1176	// the >= 0x80 is true on most architectures	1323	// the >= 0x80 is false on most architectures
1177	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')	1324	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')
1178	{	1325	{
1179	// slow path, back up and use decode_str	1326	// slow path, back up and use decode_str
1180	SV *key = decode_str (dec);	1327	SV *key = decode_str (dec);
1181	if (!key)	1328	if (!key)
…		…
1264	dSP;	1411	dSP;
1265	int count;	1412	int count;
1266		1413
1267	ENTER; SAVETMPS; PUSHMARK (SP);	1414	ENTER; SAVETMPS; PUSHMARK (SP);
1268	XPUSHs (HeVAL (he));	1415	XPUSHs (HeVAL (he));
		1416	sv_2mortal (sv);
1269		1417
1270	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1418	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1271		1419
1272	if (count == 1)	1420	if (count == 1)
1273	{	1421	{
1274	sv = newSVsv (POPs);	1422	sv = newSVsv (POPs);
1275	FREETMPS; LEAVE;	1423	FREETMPS; LEAVE;
1276	return sv;	1424	return sv;
1277	}	1425	}
1278		1426
		1427	SvREFCNT_inc (sv);
1279	FREETMPS; LEAVE;	1428	FREETMPS; LEAVE;
1280	}	1429	}
1281	}	1430	}
1282		1431
1283	if (dec->json.cb_object)	1432	if (dec->json.cb_object)
…		…
1315	{	1464	{
1316	// the beauty of JSON: you need exactly one character lookahead	1465	// the beauty of JSON: you need exactly one character lookahead
1317	// to parse everything.	1466	// to parse everything.
1318	switch (*dec->cur)	1467	switch (*dec->cur)
1319	{	1468	{
1320	case '"': ++dec->cur; return decode_str (dec);	1469	case '"': ++dec->cur; return decode_str (dec);
1321	case '[': ++dec->cur; return decode_av (dec);	1470	case '[': ++dec->cur; return decode_av (dec);
1322	case '{': ++dec->cur; return decode_hv (dec);	1471	case '{': ++dec->cur; return decode_hv (dec);
1323		1472
1324	case '-':	1473	case '-':
1325	case '0': case '1': case '2': case '3': case '4':	1474	case '0': case '1': case '2': case '3': case '4':
1326	case '5': case '6': case '7': case '8': case '9':	1475	case '5': case '6': case '7': case '8': case '9':
…		…
1329	case 't':	1478	case 't':
1330	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1479	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1331	{	1480	{
1332	dec->cur += 4;	1481	dec->cur += 4;
1333	#if JSON_SLOW	1482	#if JSON_SLOW
1334	json_true = get_sv ("JSON::XS::true", 1); SvREADONLY_on (json_true);	1483	json_true = get_bool ("JSON::XS::true");
1335	#endif	1484	#endif
1336	return SvREFCNT_inc (json_true);	1485	return newSVsv (json_true);
1337	}	1486	}
1338	else	1487	else
1339	ERR ("'true' expected");	1488	ERR ("'true' expected");
1340		1489
1341	break;	1490	break;
…		…
1343	case 'f':	1492	case 'f':
1344	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1493	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1345	{	1494	{
1346	dec->cur += 5;	1495	dec->cur += 5;
1347	#if JSON_SLOW	1496	#if JSON_SLOW
1348	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1497	json_false = get_bool ("JSON::XS::false");
1349	#endif	1498	#endif
1350	return SvREFCNT_inc (json_false);	1499	return newSVsv (json_false);
1351	}	1500	}
1352	else	1501	else
1353	ERR ("'false' expected");	1502	ERR ("'false' expected");
1354		1503
1355	break;	1504	break;
…		…
1373	fail:	1522	fail:
1374	return 0;	1523	return 0;
1375	}	1524	}
1376		1525
1377	static SV *	1526	static SV *
1378	decode_json (SV string, JSON json, UV *offset_return)	1527	decode_json (SV string, JSON json, char **offset_return)
1379	{	1528	{
1380	dec_t dec;	1529	dec_t dec;
1381	UV offset;
1382	SV *sv;	1530	SV *sv;
1383		1531
		1532	/* work around bugs in 5.10 where manipulating magic values
		1533	* makes perl ignore the magic in subsequent accesses.
		1534	* also make a copy of non-PV values, to get them into a clean
		1535	* state (SvPV should do that, but it's buggy, see below).
		1536	*/
1384	SvGETMAGIC (string);	1537	/SvGETMAGIC (string);/
		1538	if (SvMAGICAL (string) \|\| !SvPOK (string))
		1539	string = sv_2mortal (newSVsv (string));
		1540
1385	SvUPGRADE (string, SVt_PV);	1541	SvUPGRADE (string, SVt_PV);
1386		1542
1387	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))	1543	/* work around a bug in perl 5.10, which causes SvCUR to fail an
		1544	* assertion with -DDEBUGGING, although SvCUR is documented to
		1545	* return the xpv_cur field which certainly exists after upgrading.
		1546	* according to nicholas clark, calling SvPOK fixes this.
		1547	* But it doesn't fix it, so try another workaround, call SvPV_nolen
		1548	* and hope for the best.
		1549	* Damnit, SvPV_nolen still trips over yet another assertion. This
		1550	* assertion business is seriously broken, try yet another workaround
		1551	* for the broken -DDEBUGGING.
		1552	*/
		1553	{
		1554	#ifdef DEBUGGING
		1555	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
		1556	#else
		1557	STRLEN offset = SvCUR (string);
		1558	#endif
		1559
		1560	if (offset > json->max_size && json->max_size)
1388	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1561	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1389	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));	1562	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
		1563	}
1390		1564
1391	if (json->flags & F_UTF8)	1565	if (DECODE_WANTS_OCTETS (json))
1392	sv_utf8_downgrade (string, 0);	1566	sv_utf8_downgrade (string, 0);
1393	else	1567	else
1394	sv_utf8_upgrade (string);	1568	sv_utf8_upgrade (string);
1395		1569
1396	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1570	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1397		1571
1398	dec.json = *json;	1572	dec.json = *json;
1399	dec.cur = SvPVX (string);	1573	dec.cur = SvPVX (string);
1400	dec.end = SvEND (string);	1574	dec.end = SvEND (string);
1401	dec.err = 0;	1575	dec.err = 0;
1402	dec.depth = 0;	1576	dec.depth = 0;
1403	dec.maxdepth = DEC_DEPTH (dec.json.flags);
1404		1577
1405	if (dec.json.cb_object \|\| dec.json.cb_sk_object)	1578	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
1406	dec.json.flags \|= F_HOOK;	1579	dec.json.flags \|= F_HOOK;
1407		1580
1408	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1581	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
1409		1582
1410	decode_ws (&dec);	1583	decode_ws (&dec);
1411	sv = decode_sv (&dec);	1584	sv = decode_sv (&dec);
		1585
		1586	if (offset_return)
		1587	*offset_return = dec.cur;
1412		1588
1413	if (!(offset_return \|\| !sv))	1589	if (!(offset_return \|\| !sv))
1414	{	1590	{
1415	// check for trailing garbage	1591	// check for trailing garbage
1416	decode_ws (&dec);	1592	decode_ws (&dec);
…		…
1419	{	1595	{
1420	dec.err = "garbage after JSON object";	1596	dec.err = "garbage after JSON object";
1421	SvREFCNT_dec (sv);	1597	SvREFCNT_dec (sv);
1422	sv = 0;	1598	sv = 0;
1423	}	1599	}
1424	}
1425
1426	if (offset_return \|\| !sv)
1427	{
1428	offset = dec.json.flags & F_UTF8
1429	? dec.cur - SvPVX (string)
1430	: utf8_distance (dec.cur, SvPVX (string));
1431
1432	if (offset_return)
1433	*offset_return = offset;
1434	}	1600	}
1435		1601
1436	if (!sv)	1602	if (!sv)
1437	{	1603	{
1438	SV *uni = sv_newmortal ();	1604	SV *uni = sv_newmortal ();
…		…
1444	SAVEVPTR (PL_curcop);	1610	SAVEVPTR (PL_curcop);
1445	PL_curcop = &cop;	1611	PL_curcop = &cop;
1446	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1612	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1447	LEAVE;	1613	LEAVE;
1448		1614
1449	croak ("%s, at character offset %d [\"%s\"]",	1615	croak ("%s, at character offset %d (before \"%s\")",
1450	dec.err,	1616	dec.err,
1451	(int)offset,	1617	(int)ptr_to_index (string, dec.cur),
1452	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1618	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1453	}	1619	}
1454		1620
1455	sv = sv_2mortal (sv);	1621	sv = sv_2mortal (sv);
1456		1622
1457	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1623	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))
1458	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1624	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1459		1625
1460	return sv;	1626	return sv;
		1627	}
		1628
		1629	/////////////////////////////////////////////////////////////////////////////
		1630	// incremental parser
		1631
		1632	static void
		1633	incr_parse (JSON *self)
		1634	{
		1635	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1636
		1637	// the state machine here is a bit convoluted and could be simplified a lot
		1638	// but this would make it slower, so...
		1639
		1640	for (;;)
		1641	{
		1642	//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
		1643	switch (self->incr_mode)
		1644	{
		1645	// only used for initial whitespace skipping
		1646	case INCR_M_WS:
		1647	for (;;)
		1648	{
		1649	if (*p > 0x20)
		1650	{
		1651	if (*p == '#')
		1652	{
		1653	self->incr_mode = INCR_M_C0;
		1654	goto incr_m_c;
		1655	}
		1656	else
		1657	{
		1658	self->incr_mode = INCR_M_JSON;
		1659	goto incr_m_json;
		1660	}
		1661	}
		1662	else if (!*p)
		1663	goto interrupt;
		1664
		1665	++p;
		1666	}
		1667
		1668	// skip a single char inside a string (for \\-processing)
		1669	case INCR_M_BS:
		1670	if (!*p)
		1671	goto interrupt;
		1672
		1673	++p;
		1674	self->incr_mode = INCR_M_STR;
		1675	goto incr_m_str;
		1676
		1677	// inside #-style comments
		1678	case INCR_M_C0:
		1679	case INCR_M_C1:
		1680	incr_m_c:
		1681	for (;;)
		1682	{
		1683	if (*p == '\n')
		1684	{
		1685	self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON;
		1686	break;
		1687	}
		1688	else if (!*p)
		1689	goto interrupt;
		1690
		1691	++p;
		1692	}
		1693
		1694	break;
		1695
		1696	// inside a string
		1697	case INCR_M_STR:
		1698	incr_m_str:
		1699	for (;;)
		1700	{
		1701	if (*p == '"')
		1702	{
		1703	++p;
		1704	self->incr_mode = INCR_M_JSON;
		1705
		1706	if (!self->incr_nest)
		1707	goto interrupt;
		1708
		1709	goto incr_m_json;
		1710	}
		1711	else if (*p == '\\')
		1712	{
		1713	++p; // "virtually" consumes character after \
		1714
		1715	if (!*p) // if at end of string we have to switch modes
		1716	{
		1717	self->incr_mode = INCR_M_BS;
		1718	goto interrupt;
		1719	}
		1720	}
		1721	else if (!*p)
		1722	goto interrupt;
		1723
		1724	++p;
		1725	}
		1726
		1727	// after initial ws, outside string
		1728	case INCR_M_JSON:
		1729	incr_m_json:
		1730	for (;;)
		1731	{
		1732	switch (*p++)
		1733	{
		1734	case 0:
		1735	--p;
		1736	goto interrupt;
		1737
		1738	case 0x09:
		1739	case 0x0a:
		1740	case 0x0d:
		1741	case 0x20:
		1742	if (!self->incr_nest)
		1743	{
		1744	--p; // do not eat the whitespace, let the next round do it
		1745	goto interrupt;
		1746	}
		1747	break;
		1748
		1749	case '"':
		1750	self->incr_mode = INCR_M_STR;
		1751	goto incr_m_str;
		1752
		1753	case '[':
		1754	case '{':
		1755	if (++self->incr_nest > self->max_depth)
		1756	croak (ERR_NESTING_EXCEEDED);
		1757	break;
		1758
		1759	case ']':
		1760	case '}':
		1761	if (--self->incr_nest <= 0)
		1762	goto interrupt;
		1763	break;
		1764
		1765	case '#':
		1766	self->incr_mode = INCR_M_C1;
		1767	goto incr_m_c;
		1768	}
		1769	}
		1770	}
		1771
		1772	modechange:
		1773	;
		1774	}
		1775
		1776	interrupt:
		1777	self->incr_pos = p - SvPVX (self->incr_text);
		1778	//printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D
		1779	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
1461	}	1780	}
1462		1781
1463	/////////////////////////////////////////////////////////////////////////////	1782	/////////////////////////////////////////////////////////////////////////////
1464	// XS interface functions	1783	// XS interface functions
1465		1784
…		…
1477	: -1;	1796	: -1;
1478		1797
1479	json_stash = gv_stashpv ("JSON::XS" , 1);	1798	json_stash = gv_stashpv ("JSON::XS" , 1);
1480	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	1799	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);
1481		1800
1482	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );	1801	json_true = get_bool ("JSON::XS::true");
1483	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1802	json_false = get_bool ("JSON::XS::false");
		1803
		1804	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1484	}	1805	}
1485		1806
1486	PROTOTYPES: DISABLE	1807	PROTOTYPES: DISABLE
1487		1808
1488	void CLONE (...)	1809	void CLONE (...)
…		…
1491	json_boolean_stash = 0;	1812	json_boolean_stash = 0;
1492		1813
1493	void new (char *klass)	1814	void new (char *klass)
1494	PPCODE:	1815	PPCODE:
1495	{	1816	{
1496	SV *pv = NEWSV (0, sizeof (JSON));	1817	SV *pv = NEWSV (0, sizeof (JSON));
1497	SvPOK_only (pv);	1818	SvPOK_only (pv);
1498	Zero (SvPVX (pv), 1, JSON);	1819	json_init ((JSON *)SvPVX (pv));
1499	((JSON *)SvPVX (pv))->flags = F_DEFAULT;
1500	XPUSHs (sv_2mortal (sv_bless (	1820	XPUSHs (sv_2mortal (sv_bless (
1501	newRV_noinc (pv),	1821	newRV_noinc (pv),
1502	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	1822	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1503	)));	1823	)));
1504	}	1824	}
…		…
1516	allow_nonref = F_ALLOW_NONREF	1836	allow_nonref = F_ALLOW_NONREF
1517	shrink = F_SHRINK	1837	shrink = F_SHRINK
1518	allow_blessed = F_ALLOW_BLESSED	1838	allow_blessed = F_ALLOW_BLESSED
1519	convert_blessed = F_CONV_BLESSED	1839	convert_blessed = F_CONV_BLESSED
1520	relaxed = F_RELAXED	1840	relaxed = F_RELAXED
		1841	allow_unknown = F_ALLOW_UNKNOWN
1521	PPCODE:	1842	PPCODE:
1522	{	1843	{
1523	if (enable)	1844	if (enable)
1524	self->flags \|= ix;	1845	self->flags \|= ix;
1525	else	1846	else
…		…
1540	get_allow_nonref = F_ALLOW_NONREF	1861	get_allow_nonref = F_ALLOW_NONREF
1541	get_shrink = F_SHRINK	1862	get_shrink = F_SHRINK
1542	get_allow_blessed = F_ALLOW_BLESSED	1863	get_allow_blessed = F_ALLOW_BLESSED
1543	get_convert_blessed = F_CONV_BLESSED	1864	get_convert_blessed = F_CONV_BLESSED
1544	get_relaxed = F_RELAXED	1865	get_relaxed = F_RELAXED
		1866	get_allow_unknown = F_ALLOW_UNKNOWN
1545	PPCODE:	1867	PPCODE:
1546	XPUSHs (boolSV (self->flags & ix));	1868	XPUSHs (boolSV (self->flags & ix));
1547		1869
1548	void max_depth (JSON *self, UV max_depth = 0x80000000UL)	1870	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1549	PPCODE:	1871	PPCODE:
1550	{	1872	self->max_depth = max_depth;
1551	UV log2 = 0;
1552
1553	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1554
1555	while ((1UL << log2) < max_depth)
1556	++log2;
1557
1558	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1559
1560	XPUSHs (ST (0));	1873	XPUSHs (ST (0));
1561	}
1562		1874
1563	U32 get_max_depth (JSON *self)	1875	U32 get_max_depth (JSON *self)
1564	CODE:	1876	CODE:
1565	RETVAL = DEC_DEPTH (self->flags);	1877	RETVAL = self->max_depth;
1566	OUTPUT:	1878	OUTPUT:
1567	RETVAL	1879	RETVAL
1568		1880
1569	void max_size (JSON *self, UV max_size = 0)	1881	void max_size (JSON *self, U32 max_size = 0)
1570	PPCODE:	1882	PPCODE:
1571	{	1883	self->max_size = max_size;
1572	UV log2 = 0;
1573
1574	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
1575	if (max_size == 1) max_size = 2;
1576
1577	while ((1UL << log2) < max_size)
1578	++log2;
1579
1580	self->flags = self->flags & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
1581
1582	XPUSHs (ST (0));	1884	XPUSHs (ST (0));
1583	}
1584		1885
1585	int get_max_size (JSON *self)	1886	int get_max_size (JSON *self)
1586	CODE:	1887	CODE:
1587	RETVAL = DEC_SIZE (self->flags);	1888	RETVAL = self->max_size;
1588	OUTPUT:	1889	OUTPUT:
1589	RETVAL	1890	RETVAL
1590		1891
1591	void filter_json_object (JSON self, SV cb = &PL_sv_undef)	1892	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1592	PPCODE:	1893	PPCODE:
…		…
1598	}	1899	}
1599		1900
1600	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	1901	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1601	PPCODE:	1902	PPCODE:
1602	{	1903	{
1603	if (!self->cb_sk_object)	1904	if (!self->cb_sk_object)
1604	self->cb_sk_object = newHV ();	1905	self->cb_sk_object = newHV ();
1605		1906
1606	if (SvOK (cb))	1907	if (SvOK (cb))
1607	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	1908	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1608	else	1909	else
…		…
1619	XPUSHs (ST (0));	1920	XPUSHs (ST (0));
1620	}	1921	}
1621		1922
1622	void encode (JSON self, SV scalar)	1923	void encode (JSON self, SV scalar)
1623	PPCODE:	1924	PPCODE:
1624	XPUSHs (encode_json (scalar, self));	1925	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		1926	XPUSHs (scalar);
1625		1927
1626	void decode (JSON self, SV jsonstr)	1928	void decode (JSON self, SV jsonstr)
1627	PPCODE:	1929	PPCODE:
1628	XPUSHs (decode_json (jsonstr, self, 0));	1930	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		1931	XPUSHs (jsonstr);
1629		1932
1630	void decode_prefix (JSON self, SV jsonstr)	1933	void decode_prefix (JSON self, SV jsonstr)
1631	PPCODE:	1934	PPCODE:
1632	{	1935	{
1633	UV offset;	1936	SV *sv;
		1937	char *offset;
		1938	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1634	EXTEND (SP, 2);	1939	EXTEND (SP, 2);
1635	PUSHs (decode_json (jsonstr, self, &offset));	1940	PUSHs (sv);
1636	PUSHs (sv_2mortal (newSVuv (offset)));	1941	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));
		1942	}
		1943
		1944	void incr_parse (JSON self, SV jsonstr = 0)
		1945	PPCODE:
		1946	{
		1947	if (!self->incr_text)
		1948	self->incr_text = newSVpvn ("", 0);
		1949
		1950	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		1951	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		1952	if (DECODE_WANTS_OCTETS (self))
		1953	{
		1954	if (self->incr_pos)
		1955	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		1956	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		1957
		1958	sv_utf8_downgrade (self->incr_text, 0);
		1959	}
		1960	else
		1961	{
		1962	sv_utf8_upgrade (self->incr_text);
		1963
		1964	if (self->incr_pos)
		1965	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		1966	- (U8 *)SvPVX (self->incr_text);
		1967	}
		1968
		1969	// append data, if any
		1970	if (jsonstr)
		1971	{
		1972	/* make sure both strings have same encoding */
		1973	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
		1974	if (SvUTF8 (jsonstr))
		1975	sv_utf8_downgrade (jsonstr, 0);
		1976	else
		1977	sv_utf8_upgrade (jsonstr);
		1978
		1979	/* and then just blindly append */
		1980	{
		1981	STRLEN len;
		1982	const char *str = SvPV (jsonstr, len);
		1983	STRLEN cur = SvCUR (self->incr_text);
		1984
		1985	if (SvLEN (self->incr_text) <= cur + len)
		1986	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
		1987
		1988	Move (str, SvEND (self->incr_text), len, char);
		1989	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
		1990	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
		1991	}
		1992	}
		1993
		1994	if (GIMME_V != G_VOID)
		1995	do
		1996	{
		1997	SV *sv;
		1998	char *offset;
		1999
		2000	if (!INCR_DONE (self))
		2001	{
		2002	incr_parse (self);
		2003
		2004	if (self->incr_pos > self->max_size && self->max_size)
		2005	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		2006	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
		2007
		2008	if (!INCR_DONE (self))
		2009	{
		2010	// as an optimisation, do not accumulate white space in the incr buffer
		2011	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2012	{
		2013	self->incr_pos = 0;
		2014	SvCUR_set (self->incr_text, 0);
		2015	}
		2016
		2017	break;
		2018	}
		2019	}
		2020
		2021	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2022	XPUSHs (sv);
		2023
		2024	self->incr_pos -= offset - SvPVX (self->incr_text);
		2025	self->incr_nest = 0;
		2026	self->incr_mode = 0;
		2027
		2028	sv_chop (self->incr_text, offset);
		2029	}
		2030	while (GIMME_V == G_ARRAY);
		2031	}
		2032
		2033	SV incr_text (JSON self)
		2034	ATTRS: lvalue
		2035	CODE:
		2036	{
		2037	if (self->incr_pos)
		2038	croak ("incr_text can not be called when the incremental parser already started parsing");
		2039
		2040	RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef;
		2041	}
		2042	OUTPUT:
		2043	RETVAL
		2044
		2045	void incr_skip (JSON *self)
		2046	CODE:
		2047	{
		2048	if (self->incr_pos)
		2049	{
		2050	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos);
		2051	self->incr_pos = 0;
		2052	self->incr_nest = 0;
		2053	self->incr_mode = 0;
		2054	}
		2055	}
		2056
		2057	void incr_reset (JSON *self)
		2058	CODE:
		2059	{
		2060	SvREFCNT_dec (self->incr_text);
		2061	self->incr_text = 0;
		2062	self->incr_pos = 0;
		2063	self->incr_nest = 0;
		2064	self->incr_mode = 0;
1637	}	2065	}
1638		2066
1639	void DESTROY (JSON *self)	2067	void DESTROY (JSON *self)
1640	CODE:	2068	CODE:
1641	SvREFCNT_dec (self->cb_sk_object);	2069	SvREFCNT_dec (self->cb_sk_object);
1642	SvREFCNT_dec (self->cb_object);	2070	SvREFCNT_dec (self->cb_object);
		2071	SvREFCNT_dec (self->incr_text);
1643		2072
1644	PROTOTYPES: ENABLE	2073	PROTOTYPES: ENABLE
1645		2074
1646	void encode_json (SV *scalar)	2075	void encode_json (SV *scalar)
1647	PPCODE:	2076	PPCODE:
1648	{	2077	{
1649	JSON json = { F_DEFAULT \| F_UTF8 };	2078	JSON json;
1650	XPUSHs (encode_json (scalar, &json));	2079	json_init (&json);
		2080	json.flags \|= F_UTF8;
		2081	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2082	XPUSHs (scalar);
1651	}	2083	}
1652		2084
1653	void decode_json (SV *jsonstr)	2085	void decode_json (SV *jsonstr)
1654	PPCODE:	2086	PPCODE:
1655	{	2087	{
1656	JSON json = { F_DEFAULT \| F_UTF8 };	2088	JSON json;
1657	XPUSHs (decode_json (jsonstr, &json, 0));	2089	json_init (&json);
		2090	json.flags \|= F_UTF8;
		2091	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2092	XPUSHs (jsonstr);
1658	}	2093	}
1659		2094

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Comparing JSON-XS/XS.xs (file contents): Revision 1.75 by root, Wed Mar 19 15:37:54 2008 UTC vs. Revision 1.118 by root, Fri Oct 25 20:27:57 2013 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.75 by root, Wed Mar 19 15:37:54 2008 UTC vs.
Revision 1.118 by root, Fri Oct 25 20:27:57 2013 UTC