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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.84 by root, Thu Mar 27 06:37:35 2008 UTC vs.
Revision 1.125 by root, Sun Feb 21 15:37:53 2016 UTC

…		…
12	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	12	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
13	# define snprintf _snprintf // C compilers have this in stdio.h	13	# define snprintf _snprintf // C compilers have this in stdio.h
14	#endif	14	#endif
15		15
16	// some old perls do not have this, try to make it work, no	16	// some old perls do not have this, try to make it work, no
17	// guarentees, though. if it breaks, you get to keep the pieces.	17	// guarantees, though. if it breaks, you get to keep the pieces.
18	#ifndef UTF8_MAXBYTES	18	#ifndef UTF8_MAXBYTES
19	# define UTF8_MAXBYTES 13	19	# define UTF8_MAXBYTES 13
20	#endif	20	#endif
21		21
		22	// compatibility with perl <5.18
		23	#ifndef HvNAMELEN_get
		24	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		25	#endif
		26	#ifndef HvNAMELEN
		27	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		28	#endif
		29	#ifndef HvNAMEUTF8
		30	# define HvNAMEUTF8(hv) 0
		31	#endif
		32
		33	// three extra for rounding, sign, and end of string
22	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 2)	34	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)
23		35
24	#define F_ASCII 0x00000001UL	36	#define F_ASCII 0x00000001UL
25	#define F_LATIN1 0x00000002UL	37	#define F_LATIN1 0x00000002UL
26	#define F_UTF8 0x00000004UL	38	#define F_UTF8 0x00000004UL
27	#define F_INDENT 0x00000008UL	39	#define F_INDENT 0x00000008UL
…		…
32	#define F_SHRINK 0x00000200UL	44	#define F_SHRINK 0x00000200UL
33	#define F_ALLOW_BLESSED 0x00000400UL	45	#define F_ALLOW_BLESSED 0x00000400UL
34	#define F_CONV_BLESSED 0x00000800UL	46	#define F_CONV_BLESSED 0x00000800UL
35	#define F_RELAXED 0x00001000UL	47	#define F_RELAXED 0x00001000UL
36	#define F_ALLOW_UNKNOWN 0x00002000UL	48	#define F_ALLOW_UNKNOWN 0x00002000UL
37		49	#define F_ALLOW_TAGS 0x00004000UL
38	#define F_MAXDEPTH 0xf8000000UL
39	#define S_MAXDEPTH 27
40	#define F_MAXSIZE 0x01f00000UL
41	#define S_MAXSIZE 20
42	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing	50	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
43		51
44	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
45	#define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE ))
46
47	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	52	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
48	#define F_DEFAULT (9UL << S_MAXDEPTH)
49		53
50	#define INIT_SIZE 32 // initial scalar size to be allocated	54	#define INIT_SIZE 32 // initial scalar size to be allocated
51	#define INDENT_STEP 3 // spaces per indentation level	55	#define INDENT_STEP 3 // spaces per indentation level
52		56
53	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size	57	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
		58
		59	#define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8)
54		60
55	#define SB do {	61	#define SB do {
56	#define SE } while (0)	62	#define SE } while (0)
57		63
58	#if __GNUC__ >= 3	64	#if __GNUC__ >= 3
…		…
68		74
69	#define IN_RANGE_INC(type,val,beg,end) \	75	#define IN_RANGE_INC(type,val,beg,end) \
70	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	76	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
71	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	77	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
72		78
		79	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"
		80
73	#ifdef USE_ITHREADS	81	#ifdef USE_ITHREADS
74	# define JSON_SLOW 1	82	# define JSON_SLOW 1
75	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))	83	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))
76	#else	84	#else
77	# define JSON_SLOW 0	85	# define JSON_SLOW 0
78	# define JSON_STASH json_stash	86	# define JSON_STASH json_stash
79	#endif	87	#endif
80		88
		89	// the amount of HEs to allocate on the stack, when sorting keys
		90	#define STACK_HES 64
		91
81	static HV json_stash, json_boolean_stash; // JSON::XS::	92	static HV json_stash, types_boolean_stash; // JSON::XS::
82	static SV json_true, json_false;	93	static SV types_true, types_false, *sv_json;
83		94
84	enum {	95	enum {
85	INCR_M_WS = 0, // initial whitespace skipping, must be 0	96	INCR_M_WS = 0, // initial whitespace skipping, must be 0
86	INCR_M_STR, // inside string	97	INCR_M_STR, // inside string
87	INCR_M_BS, // inside backslash	98	INCR_M_BS, // inside backslash
		99	INCR_M_C0, // inside comment in initial whitespace sequence
		100	INCR_M_C1, // inside comment in other places
88	INCR_M_JSON // outside anything, count nesting	101	INCR_M_JSON // outside anything, count nesting
89	};	102	};
90		103
91	#define INCR_DONE(json) (!(json)->incr_nest && (json)->incr_mode == INCR_M_JSON)	104	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)
92		105
93	typedef struct {	106	typedef struct {
94	U32 flags;	107	U32 flags;
		108	U32 max_depth;
		109	STRLEN max_size;
		110
95	SV *cb_object;	111	SV *cb_object;
96	HV *cb_sk_object;	112	HV *cb_sk_object;
97		113
98	// for the incremental parser	114	// for the incremental parser
99	SV *incr_text; // the source text so far	115	SV *incr_text; // the source text so far
100	STRLEN incr_pos; // the current offset into the text	116	STRLEN incr_pos; // the current offset into the text
101	int incr_nest; // {[]}-nesting level	117	int incr_nest; // {[]}-nesting level
102	int incr_mode;	118	unsigned char incr_mode;
103	} JSON;	119	} JSON;
		120
		121	INLINE void
		122	json_init (JSON *json)
		123	{
		124	Zero (json, 1, JSON);
		125	json->max_depth = 512;
		126	}
104		127
105	/////////////////////////////////////////////////////////////////////////////	128	/////////////////////////////////////////////////////////////////////////////
106	// utility functions	129	// utility functions
107		130
108	INLINE SV *	131	INLINE SV *
…		…
118		141
119	INLINE void	142	INLINE void
120	shrink (SV *sv)	143	shrink (SV *sv)
121	{	144	{
122	sv_utf8_downgrade (sv, 1);	145	sv_utf8_downgrade (sv, 1);
		146
123	if (SvLEN (sv) > SvCUR (sv) + 1)	147	if (SvLEN (sv) > SvCUR (sv) + 1)
124	{	148	{
125	#ifdef SvPV_shrink_to_cur	149	#ifdef SvPV_shrink_to_cur
126	SvPV_shrink_to_cur (sv);	150	SvPV_shrink_to_cur (sv);
127	#elif defined (SvPV_renew)	151	#elif defined (SvPV_renew)
…		…
171	*s++ = 0x80 \| ( ch & 0x3f);	195	*s++ = 0x80 \| ( ch & 0x3f);
172		196
173	return s;	197	return s;
174	}	198	}
175		199
		200	// convert offset pointer to character index, sv must be string
		201	static STRLEN
		202	ptr_to_index (SV sv, char offset)
		203	{
		204	return SvUTF8 (sv)
		205	? utf8_distance (offset, SvPVX (sv))
		206	: offset - SvPVX (sv);
		207	}
		208
		209	/////////////////////////////////////////////////////////////////////////////
		210	// fp hell
		211
		212	// scan a group of digits, and a trailing exponent
		213	static void
		214	json_atof_scan1 (const char s, NV accum, int *expo, int postdp, int maxdepth)
		215	{
		216	UV uaccum = 0;
		217	int eaccum = 0;
		218
		219	// if we recurse too deep, skip all remaining digits
		220	// to avoid a stack overflow attack
		221	if (expect_false (--maxdepth <= 0))
		222	while (((U8)*s - '0') < 10)
		223	++s;
		224
		225	for (;;)
		226	{
		227	U8 dig = (U8)*s - '0';
		228
		229	if (expect_false (dig >= 10))
		230	{
		231	if (dig == (U8)((U8)'.' - (U8)'0'))
		232	{
		233	++s;
		234	json_atof_scan1 (s, accum, expo, 1, maxdepth);
		235	}
		236	else if ((dig \| ' ') == 'e' - '0')
		237	{
		238	int exp2 = 0;
		239	int neg = 0;
		240
		241	++s;
		242
		243	if (*s == '-')
		244	{
		245	++s;
		246	neg = 1;
		247	}
		248	else if (*s == '+')
		249	++s;
		250
		251	while ((dig = (U8)*s - '0') < 10)
		252	exp2 = exp2 * 10 + *s++ - '0';
		253
		254	*expo += neg ? -exp2 : exp2;
		255	}
		256
		257	break;
		258	}
		259
		260	++s;
		261
		262	uaccum = uaccum * 10 + dig;
		263	++eaccum;
		264
		265	// if we have too many digits, then recurse for more
		266	// we actually do this for rather few digits
		267	if (uaccum >= (UV_MAX - 9) / 10)
		268	{
		269	if (postdp) *expo -= eaccum;
		270	json_atof_scan1 (s, accum, expo, postdp, maxdepth);
		271	if (postdp) *expo += eaccum;
		272
		273	break;
		274	}
		275	}
		276
		277	// this relies greatly on the quality of the pow ()
		278	// implementation of the platform, but a good
		279	// implementation is hard to beat.
		280	// (IEEE 754 conformant ones are required to be exact)
		281	if (postdp) *expo -= eaccum;
		282	accum += uaccum Perl_pow (10., *expo);
		283	*expo += eaccum;
		284	}
		285
		286	static NV
		287	json_atof (const char *s)
		288	{
		289	NV accum = 0.;
		290	int expo = 0;
		291	int neg = 0;
		292
		293	if (*s == '-')
		294	{
		295	++s;
		296	neg = 1;
		297	}
		298
		299	// a recursion depth of ten gives us >>500 bits
		300	json_atof_scan1 (s, &accum, &expo, 0, 10);
		301
		302	return neg ? -accum : accum;
		303	}
176	/////////////////////////////////////////////////////////////////////////////	304	/////////////////////////////////////////////////////////////////////////////
177	// encoder	305	// encoder
178		306
179	// structure used for encoding JSON	307	// structure used for encoding JSON
180	typedef struct	308	typedef struct
…		…
182	char *cur; // SvPVX (sv) + current output position	310	char *cur; // SvPVX (sv) + current output position
183	char *end; // SvEND (sv)	311	char *end; // SvEND (sv)
184	SV *sv; // result scalar	312	SV *sv; // result scalar
185	JSON json;	313	JSON json;
186	U32 indent; // indentation level	314	U32 indent; // indentation level
187	U32 maxdepth; // max. indentation/recursion level
188	UV limit; // escape character values >= this value when encoding	315	UV limit; // escape character values >= this value when encoding
189	} enc_t;	316	} enc_t;
190		317
191	INLINE void	318	INLINE void
192	need (enc_t *enc, STRLEN len)	319	need (enc_t *enc, STRLEN len)
193	{	320	{
194	if (expect_false (enc->cur + len >= enc->end))	321	if (expect_false (enc->cur + len >= enc->end))
195	{	322	{
196	STRLEN cur = enc->cur - SvPVX (enc->sv);	323	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
197	SvGROW (enc->sv, cur + len + 1);	324	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
198	enc->cur = SvPVX (enc->sv) + cur;	325	enc->cur = SvPVX (enc->sv) + cur;
199	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	326	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
200	}	327	}
201	}	328	}
202		329
…		…
277	(int)((uch - 0x10000) % 0x400 + 0xDC00));	404	(int)((uch - 0x10000) % 0x400 + 0xDC00));
278	enc->cur += 12;	405	enc->cur += 12;
279	}	406	}
280	else	407	else
281	{	408	{
282	static char hexdigit [16] = "0123456789abcdef";
283	need (enc, len += 5);	409	need (enc, len += 5);
284	*enc->cur++ = '\\';	410	*enc->cur++ = '\\';
285	*enc->cur++ = 'u';	411	*enc->cur++ = 'u';
286	*enc->cur++ = hexdigit [ uch >> 12 ];	412	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
287	*enc->cur++ = hexdigit [(uch >> 8) & 15];	413	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
288	*enc->cur++ = hexdigit [(uch >> 4) & 15];	414	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
289	*enc->cur++ = hexdigit [(uch >> 0) & 15];	415	*enc->cur++ = PL_hexdigit [(uch >> 0) & 15];
290	}	416	}
291		417
292	str += clen;	418	str += clen;
293	}	419	}
294	else if (enc->json.flags & F_LATIN1)	420	else if (enc->json.flags & F_LATIN1)
…		…
365	static void	491	static void
366	encode_av (enc_t enc, AV av)	492	encode_av (enc_t enc, AV av)
367	{	493	{
368	int i, len = av_len (av);	494	int i, len = av_len (av);
369		495
370	if (enc->indent >= enc->maxdepth)	496	if (enc->indent >= enc->json.max_depth)
371	croak ("data structure too deep (hit recursion limit)");	497	croak (ERR_NESTING_EXCEEDED);
372		498
373	encode_ch (enc, '[');	499	encode_ch (enc, '[');
374		500
375	if (len >= 0)	501	if (len >= 0)
376	{	502	{
377	encode_nl (enc); ++enc->indent;	503	encode_nl (enc); ++enc->indent;
378		504
379	for (i = 0; i <= len; ++i)	505	for (i = 0; i <= len; ++i)
…		…
391	encode_comma (enc);	517	encode_comma (enc);
392	}	518	}
393		519
394	encode_nl (enc); --enc->indent; encode_indent (enc);	520	encode_nl (enc); --enc->indent; encode_indent (enc);
395	}	521	}
396		522
397	encode_ch (enc, ']');	523	encode_ch (enc, ']');
398	}	524	}
399		525
400	static void	526	static void
401	encode_hk (enc_t enc, HE he)	527	encode_hk (enc_t enc, HE he)
…		…
405	if (HeKLEN (he) == HEf_SVKEY)	531	if (HeKLEN (he) == HEf_SVKEY)
406	{	532	{
407	SV *sv = HeSVKEY (he);	533	SV *sv = HeSVKEY (he);
408	STRLEN len;	534	STRLEN len;
409	char *str;	535	char *str;
410		536
411	SvGETMAGIC (sv);	537	SvGETMAGIC (sv);
412	str = SvPV (sv, len);	538	str = SvPV (sv, len);
413		539
414	encode_str (enc, str, len, SvUTF8 (sv));	540	encode_str (enc, str, len, SvUTF8 (sv));
415	}	541	}
…		…
451	static void	577	static void
452	encode_hv (enc_t enc, HV hv)	578	encode_hv (enc_t enc, HV hv)
453	{	579	{
454	HE *he;	580	HE *he;
455		581
456	if (enc->indent >= enc->maxdepth)	582	if (enc->indent >= enc->json.max_depth)
457	croak ("data structure too deep (hit recursion limit)");	583	croak (ERR_NESTING_EXCEEDED);
458		584
459	encode_ch (enc, '{');	585	encode_ch (enc, '{');
460		586
461	// for canonical output we have to sort by keys first	587	// for canonical output we have to sort by keys first
462	// actually, this is mostly due to the stupid so-called	588	// actually, this is mostly due to the stupid so-called
463	// security workaround added somewhere in 5.8.x.	589	// security workaround added somewhere in 5.8.x
464	// that randomises hash orderings	590	// that randomises hash orderings
465	if (enc->json.flags & F_CANONICAL)	591	if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv))
466	{	592	{
467	int count = hv_iterinit (hv);	593	int count = hv_iterinit (hv);
468		594
469	if (SvMAGICAL (hv))	595	if (SvMAGICAL (hv))
470	{	596	{
…		…
481	}	607	}
482		608
483	if (count)	609	if (count)
484	{	610	{
485	int i, fast = 1;	611	int i, fast = 1;
486	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	612	HE *hes_stack [STACK_HES];
487	HE *hes = _alloca (count sizeof (HE));	613	HE **hes = hes_stack;
488	#else	614
489	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	615	// allocate larger arrays on the heap
490	#endif	616	if (count > STACK_HES)
		617	{
		618	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		619	hes = (HE **)SvPVX (sv);
		620	}
491		621
492	i = 0;	622	i = 0;
493	while ((he = hv_iternext (hv)))	623	while ((he = hv_iternext (hv)))
494	{	624	{
495	hes [i++] = he;	625	hes [i++] = he;
…		…
564	// encode objects, arrays and special \0=false and \1=true values.	694	// encode objects, arrays and special \0=false and \1=true values.
565	static void	695	static void
566	encode_rv (enc_t enc, SV sv)	696	encode_rv (enc_t enc, SV sv)
567	{	697	{
568	svtype svt;	698	svtype svt;
		699	GV *method;
569		700
570	SvGETMAGIC (sv);	701	SvGETMAGIC (sv);
571	svt = SvTYPE (sv);	702	svt = SvTYPE (sv);
572		703
573	if (expect_false (SvOBJECT (sv)))	704	if (expect_false (SvOBJECT (sv)))
574	{	705	{
575	HV *stash = !JSON_SLOW \|\| json_boolean_stash	706	HV *boolean_stash = !JSON_SLOW \|\| types_boolean_stash
576	? json_boolean_stash	707	? types_boolean_stash
577	: gv_stashpv ("JSON::XS::Boolean", 1);	708	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		709	HV *stash = SvSTASH (sv);
578		710
579	if (SvSTASH (sv) == stash)	711	if (stash == boolean_stash)
580	{	712	{
581	if (SvIV (sv))	713	if (SvIV (sv))
582	encode_str (enc, "true", 4, 0);	714	encode_str (enc, "true", 4, 0);
583	else	715	else
584	encode_str (enc, "false", 5, 0);	716	encode_str (enc, "false", 5, 0);
585	}	717	}
		718	else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
		719	{
		720	int count;
		721	dSP;
		722
		723	ENTER; SAVETMPS;
		724	SAVESTACK_POS ();
		725	PUSHMARK (SP);
		726	EXTEND (SP, 2);
		727	// we re-bless the reference to get overload and other niceties right
		728	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		729	PUSHs (sv_json);
		730
		731	PUTBACK;
		732	count = call_sv ((SV *)GvCV (method), G_ARRAY);
		733	SPAGAIN;
		734
		735	// catch this surprisingly common error
		736	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		737	croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		738
		739	encode_ch (enc, '(');
		740	encode_ch (enc, '"');
		741	encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
		742	encode_ch (enc, '"');
		743	encode_ch (enc, ')');
		744	encode_ch (enc, '[');
		745
		746	while (count)
		747	{
		748	encode_sv (enc, SP[1 - count--]);
		749
		750	if (count)
		751	encode_ch (enc, ',');
		752	}
		753
		754	encode_ch (enc, ']');
		755
		756	FREETMPS; LEAVE;
		757	}
		758	else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
		759	{
		760	dSP;
		761
		762	ENTER; SAVETMPS;
		763	PUSHMARK (SP);
		764	// we re-bless the reference to get overload and other niceties right
		765	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		766
		767	// calling with G_SCALAR ensures that we always get a 1 return value
		768	PUTBACK;
		769	call_sv ((SV *)GvCV (method), G_SCALAR);
		770	SPAGAIN;
		771
		772	// catch this surprisingly common error
		773	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		774	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		775
		776	sv = POPs;
		777	PUTBACK;
		778
		779	encode_sv (enc, sv);
		780
		781	FREETMPS; LEAVE;
		782	}
		783	else if (enc->json.flags & F_ALLOW_BLESSED)
		784	encode_str (enc, "null", 4, 0);
586	else	785	else
587	{
588	#if 0
589	if (0 && sv_derived_from (rv, "JSON::Literal"))
590	{
591	// not yet
592	}
593	#endif
594	if (enc->json.flags & F_CONV_BLESSED)
595	{
596	// we re-bless the reference to get overload and other niceties right
597	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
598
599	if (to_json)
600	{
601	dSP;
602
603	ENTER; SAVETMPS; PUSHMARK (SP);
604	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
605
606	// calling with G_SCALAR ensures that we always get a 1 return value
607	PUTBACK;
608	call_sv ((SV *)GvCV (to_json), G_SCALAR);
609	SPAGAIN;
610
611	// catch this surprisingly common error
612	if (SvROK (TOPs) && SvRV (TOPs) == sv)
613	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
614
615	sv = POPs;
616	PUTBACK;
617
618	encode_sv (enc, sv);
619
620	FREETMPS; LEAVE;
621	}
622	else if (enc->json.flags & F_ALLOW_BLESSED)
623	encode_str (enc, "null", 4, 0);
624	else
625	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
626	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
627	}
628	else if (enc->json.flags & F_ALLOW_BLESSED)
629	encode_str (enc, "null", 4, 0);
630	else
631	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	786	croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
632	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	787	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
633	}
634	}	788	}
635	else if (svt == SVt_PVHV)	789	else if (svt == SVt_PVHV)
636	encode_hv (enc, (HV *)sv);	790	encode_hv (enc, (HV *)sv);
637	else if (svt == SVt_PVAV)	791	else if (svt == SVt_PVAV)
638	encode_av (enc, (AV *)sv);	792	encode_av (enc, (AV *)sv);
…		…
714	}	868	}
715	else	869	else
716	{	870	{
717	// large integer, use the (rather slow) snprintf way.	871	// large integer, use the (rather slow) snprintf way.
718	need (enc, IVUV_MAXCHARS);	872	need (enc, IVUV_MAXCHARS);
719	enc->cur +=	873	enc->cur +=
720	SvIsUV(sv)	874	SvIsUV(sv)
721	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	875	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
722	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	876	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
723	}	877	}
724	}	878	}
725	else if (SvROK (sv))	879	else if (SvROK (sv))
726	encode_rv (enc, SvRV (sv));	880	encode_rv (enc, SvRV (sv));
727	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)	881	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
728	encode_str (enc, "null", 4, 0);	882	encode_str (enc, "null", 4, 0);
729	else	883	else
730	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	884	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
731	SvPV_nolen (sv), SvFLAGS (sv));	885	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
		886	}
		887
		888	static int
		889	json_scalar (SV *scalar)
		890	{
		891	return 0;//D
		892	if (!SvROK (scalar))
		893	return 1;
732	}	894	}
733		895
734	static SV *	896	static SV *
735	encode_json (SV scalar, JSON json)	897	encode_json (SV scalar, JSON json)
736	{	898	{
737	enc_t enc;	899	enc_t enc;
738		900
739	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	901	if (!(json->flags & F_ALLOW_NONREF) && json_scalar (scalar))
740	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	902	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
741		903
742	enc.json = *json;	904	enc.json = *json;
743	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	905	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
744	enc.cur = SvPVX (enc.sv);	906	enc.cur = SvPVX (enc.sv);
745	enc.end = SvEND (enc.sv);	907	enc.end = SvEND (enc.sv);
746	enc.indent = 0;	908	enc.indent = 0;
747	enc.maxdepth = DEC_DEPTH (enc.json.flags);
748	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL	909	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL
749	: enc.json.flags & F_LATIN1 ? 0x000100UL	910	: enc.json.flags & F_LATIN1 ? 0x000100UL
750	: 0x110000UL;	911	: 0x110000UL;
751		912
752	SvPOK_only (enc.sv);	913	SvPOK_only (enc.sv);
753	encode_sv (&enc, scalar);	914	encode_sv (&enc, scalar);
		915	encode_nl (&enc);
754		916
755	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	917	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
756	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	918	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
757		919
758	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	920	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
…		…
819	if (*dec->cur != ch) \	981	if (*dec->cur != ch) \
820	ERR (# ch " expected"); \	982	ERR (# ch " expected"); \
821	++dec->cur; \	983	++dec->cur; \
822	SE	984	SE
823		985
824	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")	986	#define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED)
825	#define DEC_DEC_DEPTH --dec->depth	987	#define DEC_DEC_DEPTH --dec->depth
826		988
827	static SV decode_sv (dec_t dec);	989	static SV decode_sv (dec_t dec);
828		990
829	static signed char decode_hexdigit[256];	991	static signed char decode_hexdigit[256];
…		…
938	else if (expect_true (ch >= 0x20 && ch < 0x80))	1100	else if (expect_true (ch >= 0x20 && ch < 0x80))
939	*cur++ = ch;	1101	*cur++ = ch;
940	else if (ch >= 0x80)	1102	else if (ch >= 0x80)
941	{	1103	{
942	STRLEN clen;	1104	STRLEN clen;
943	UV uch;
944		1105
945	--dec_cur;	1106	--dec_cur;
946		1107
947	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);	1108	decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
948	if (clen == (STRLEN)-1)	1109	if (clen == (STRLEN)-1)
949	ERR ("malformed UTF-8 character in JSON string");	1110	ERR ("malformed UTF-8 character in JSON string");
950		1111
951	do	1112	do
952	cur++ = dec_cur++;	1113	cur++ = dec_cur++;
953	while (--clen);	1114	while (--clen);
954		1115
955	utf8 = 1;	1116	utf8 = 1;
956	}	1117	}
		1118	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1119	*cur++ = ch;
957	else	1120	else
958	{	1121	{
959	--dec_cur;	1122	--dec_cur;
960		1123
961	if (!ch)	1124	if (!ch)
…		…
969	{	1132	{
970	STRLEN len = cur - buf;	1133	STRLEN len = cur - buf;
971		1134
972	if (sv)	1135	if (sv)
973	{	1136	{
974	SvGROW (sv, SvCUR (sv) + len + 1);	1137	STRLEN cur = SvCUR (sv);
		1138
		1139	if (SvLEN (sv) <= cur + len)
		1140	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
		1141
975	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1142	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
976	SvCUR_set (sv, SvCUR (sv) + len);	1143	SvCUR_set (sv, SvCUR (sv) + len);
977	}	1144	}
978	else	1145	else
979	sv = newSVpvn (buf, len);	1146	sv = newSVpvn (buf, len);
…		…
1070		1237
1071	// special case the rather common 1..5-digit-int case	1238	// special case the rather common 1..5-digit-int case
1072	if (*start == '-')	1239	if (*start == '-')
1073	switch (len)	1240	switch (len)
1074	{	1241	{
1075	case 2: return newSViv (-( start [1] - '0' * 1));	1242	case 2: return newSViv (-(IV)( start [1] - '0' * 1));
1076	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	1243	case 3: return newSViv (-(IV)( start [1] * 10 + start [2] - '0' * 11));
1077	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));	1244	case 4: return newSViv (-(IV)( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
1078	case 5: return newSViv (-( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));	1245	case 5: return newSViv (-(IV)( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
1079	case 6: return newSViv (-(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));	1246	case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));
1080	}	1247	}
1081	else	1248	else
1082	switch (len)	1249	switch (len)
1083	{	1250	{
1084	case 1: return newSViv ( start [0] - '0' * 1);	1251	case 1: return newSViv ( start [0] - '0' * 1);
1085	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	1252	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
1086	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);	1253	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
1087	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);	1254	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
1088	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);	1255	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);
1089	}	1256	}
1090		1257
1091	{	1258	{
1092	UV uv;	1259	UV uv;
1093	int numtype = grok_number (start, len, &uv);	1260	int numtype = grok_number (start, len, &uv);
…		…
1102	}	1269	}
1103		1270
1104	len -= *start == '-' ? 1 : 0;	1271	len -= *start == '-' ? 1 : 0;
1105		1272
1106	// does not fit into IV or UV, try NV	1273	// does not fit into IV or UV, try NV
1107	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1274	if (len <= NV_DIG)
1108	#if defined (LDBL_DIG)
1109	\|\| (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
1110	#endif
1111	)
1112	// fits into NV without loss of precision	1275	// fits into NV without loss of precision
1113	return newSVnv (Atof (start));	1276	return newSVnv (json_atof (start));
1114		1277
1115	// everything else fails, convert it to a string	1278	// everything else fails, convert it to a string
1116	return newSVpvn (start, dec->cur - start);	1279	return newSVpvn (start, dec->cur - start);
1117	}	1280	}
1118		1281
1119	// loss of precision here	1282	// loss of precision here
1120	return newSVnv (Atof (start));	1283	return newSVnv (json_atof (start));
1121		1284
1122	fail:	1285	fail:
1123	return 0;	1286	return 0;
1124	}	1287	}
1125		1288
…		…
1149	if (*dec->cur == ']')	1312	if (*dec->cur == ']')
1150	{	1313	{
1151	++dec->cur;	1314	++dec->cur;
1152	break;	1315	break;
1153	}	1316	}
1154		1317
1155	if (*dec->cur != ',')	1318	if (*dec->cur != ',')
1156	ERR (", or ] expected while parsing array");	1319	ERR (", or ] expected while parsing array");
1157		1320
1158	++dec->cur;	1321	++dec->cur;
1159		1322
…		…
1283		1446
1284	hv_iterinit (hv);	1447	hv_iterinit (hv);
1285	he = hv_iternext (hv);	1448	he = hv_iternext (hv);
1286	hv_iterinit (hv);	1449	hv_iterinit (hv);
1287		1450
1288	// the next line creates a mortal sv each time its called.	1451	// the next line creates a mortal sv each time it's called.
1289	// might want to optimise this for common cases.	1452	// might want to optimise this for common cases.
1290	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);	1453	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1291		1454
1292	if (cb)	1455	if (cb)
1293	{	1456	{
1294	dSP;	1457	dSP;
1295	int count;	1458	int count;
1296		1459
1297	ENTER; SAVETMPS; PUSHMARK (SP);	1460	ENTER; SAVETMPS;
		1461	SAVESTACK_POS ();
		1462	PUSHMARK (SP);
1298	XPUSHs (HeVAL (he));	1463	XPUSHs (HeVAL (he));
		1464	sv_2mortal (sv);
1299		1465
1300	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1466	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1301		1467
1302	if (count == 1)	1468	if (count == 1)
1303	{	1469	{
1304	sv = newSVsv (POPs);	1470	sv = newSVsv (POPs);
1305	FREETMPS; LEAVE;	1471	FREETMPS; LEAVE;
1306	return sv;	1472	return sv;
1307	}	1473	}
1308		1474
		1475	SvREFCNT_inc (sv);
1309	FREETMPS; LEAVE;	1476	FREETMPS; LEAVE;
1310	}	1477	}
1311	}	1478	}
1312		1479
1313	if (dec->json.cb_object)	1480	if (dec->json.cb_object)
1314	{	1481	{
1315	dSP;	1482	dSP;
1316	int count;	1483	int count;
1317		1484
1318	ENTER; SAVETMPS; PUSHMARK (SP);	1485	ENTER; SAVETMPS;
		1486	SAVESTACK_POS ();
		1487	PUSHMARK (SP);
1319	XPUSHs (sv_2mortal (sv));	1488	XPUSHs (sv_2mortal (sv));
1320		1489
1321	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1490	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1322		1491
1323	if (count == 1)	1492	if (count == 1)
…		…
1339	DEC_DEC_DEPTH;	1508	DEC_DEC_DEPTH;
1340	return 0;	1509	return 0;
1341	}	1510	}
1342		1511
1343	static SV *	1512	static SV *
		1513	decode_tag (dec_t *dec)
		1514	{
		1515	SV *tag = 0;
		1516	SV *val = 0;
		1517
		1518	if (!(dec->json.flags & F_ALLOW_TAGS))
		1519	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1520
		1521	++dec->cur;
		1522
		1523	decode_ws (dec);
		1524
		1525	tag = decode_sv (dec);
		1526	if (!tag)
		1527	goto fail;
		1528
		1529	if (!SvPOK (tag))
		1530	ERR ("malformed JSON string, (tag) must be a string");
		1531
		1532	decode_ws (dec);
		1533
		1534	if (*dec->cur != ')')
		1535	ERR (") expected after tag");
		1536
		1537	++dec->cur;
		1538
		1539	decode_ws (dec);
		1540
		1541	val = decode_sv (dec);
		1542	if (!val)
		1543	goto fail;
		1544
		1545	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1546	ERR ("malformed JSON string, tag value must be an array");
		1547
		1548	{
		1549	AV av = (AV )SvRV (val);
		1550	int i, len = av_len (av) + 1;
		1551	HV *stash = gv_stashsv (tag, 0);
		1552	SV *sv;
		1553
		1554	if (!stash)
		1555	ERR ("cannot decode perl-object (package does not exist)");
		1556
		1557	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1558
		1559	if (!method)
		1560	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1561
		1562	dSP;
		1563
		1564	ENTER; SAVETMPS;
		1565	PUSHMARK (SP);
		1566	EXTEND (SP, len + 2);
		1567	// we re-bless the reference to get overload and other niceties right
		1568	PUSHs (tag);
		1569	PUSHs (sv_json);
		1570
		1571	for (i = 0; i < len; ++i)
		1572	PUSHs (*av_fetch (av, i, 1));
		1573
		1574	PUTBACK;
		1575	call_sv ((SV *)GvCV (method), G_SCALAR);
		1576	SPAGAIN;
		1577
		1578	SvREFCNT_dec (tag);
		1579	SvREFCNT_dec (val);
		1580	sv = SvREFCNT_inc (POPs);
		1581
		1582	PUTBACK;
		1583
		1584	FREETMPS; LEAVE;
		1585
		1586	return sv;
		1587	}
		1588
		1589	fail:
		1590	SvREFCNT_dec (tag);
		1591	SvREFCNT_dec (val);
		1592	return 0;
		1593	}
		1594
		1595	static SV *
1344	decode_sv (dec_t *dec)	1596	decode_sv (dec_t *dec)
1345	{	1597	{
1346	// the beauty of JSON: you need exactly one character lookahead	1598	// the beauty of JSON: you need exactly one character lookahead
1347	// to parse everything.	1599	// to parse everything.
1348	switch (*dec->cur)	1600	switch (*dec->cur)
1349	{	1601	{
1350	case '"': ++dec->cur; return decode_str (dec);	1602	case '"': ++dec->cur; return decode_str (dec);
1351	case '[': ++dec->cur; return decode_av (dec);	1603	case '[': ++dec->cur; return decode_av (dec);
1352	case '{': ++dec->cur; return decode_hv (dec);	1604	case '{': ++dec->cur; return decode_hv (dec);
		1605	case '(': return decode_tag (dec);
1353		1606
1354	case '-':	1607	case '-':
1355	case '0': case '1': case '2': case '3': case '4':	1608	case '0': case '1': case '2': case '3': case '4':
1356	case '5': case '6': case '7': case '8': case '9':	1609	case '5': case '6': case '7': case '8': case '9':
1357	return decode_num (dec);	1610	return decode_num (dec);
…		…
1359	case 't':	1612	case 't':
1360	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1613	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1361	{	1614	{
1362	dec->cur += 4;	1615	dec->cur += 4;
1363	#if JSON_SLOW	1616	#if JSON_SLOW
1364	json_true = get_bool ("JSON::XS::true");	1617	types_true = get_bool ("Types::Serialiser::true");
1365	#endif	1618	#endif
1366	return newSVsv (json_true);	1619	return newSVsv (types_true);
1367	}	1620	}
1368	else	1621	else
1369	ERR ("'true' expected");	1622	ERR ("'true' expected");
1370		1623
1371	break;	1624	break;
…		…
1373	case 'f':	1626	case 'f':
1374	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1627	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1375	{	1628	{
1376	dec->cur += 5;	1629	dec->cur += 5;
1377	#if JSON_SLOW	1630	#if JSON_SLOW
1378	json_false = get_bool ("JSON::XS::false");	1631	types_false = get_bool ("Types::Serialiser::false");
1379	#endif	1632	#endif
1380	return newSVsv (json_false);	1633	return newSVsv (types_false);
1381	}	1634	}
1382	else	1635	else
1383	ERR ("'false' expected");	1636	ERR ("'false' expected");
1384		1637
1385	break;	1638	break;
…		…
1394	ERR ("'null' expected");	1647	ERR ("'null' expected");
1395		1648
1396	break;	1649	break;
1397		1650
1398	default:	1651	default:
1399	ERR ("malformed JSON string, neither array, object, number, string or atom");	1652	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1400	break;	1653	break;
1401	}	1654	}
1402		1655
1403	fail:	1656	fail:
1404	return 0;	1657	return 0;
1405	}	1658	}
1406		1659
1407	static SV *	1660	static SV *
1408	decode_json (SV string, JSON json, STRLEN *offset_return)	1661	decode_json (SV string, JSON json, char **offset_return)
1409	{	1662	{
1410	dec_t dec;	1663	dec_t dec;
1411	STRLEN offset;
1412	SV *sv;	1664	SV *sv;
1413		1665
		1666	/* work around bugs in 5.10 where manipulating magic values
		1667	* makes perl ignore the magic in subsequent accesses.
		1668	* also make a copy of non-PV values, to get them into a clean
		1669	* state (SvPV should do that, but it's buggy, see below).
		1670	*/
1414	SvGETMAGIC (string);	1671	/SvGETMAGIC (string);/
		1672	if (SvMAGICAL (string) \|\| !SvPOK (string))
		1673	string = sv_2mortal (newSVsv (string));
		1674
1415	SvUPGRADE (string, SVt_PV);	1675	SvUPGRADE (string, SVt_PV);
1416		1676
1417	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))	1677	/* work around a bug in perl 5.10, which causes SvCUR to fail an
		1678	* assertion with -DDEBUGGING, although SvCUR is documented to
		1679	* return the xpv_cur field which certainly exists after upgrading.
		1680	* according to nicholas clark, calling SvPOK fixes this.
		1681	* But it doesn't fix it, so try another workaround, call SvPV_nolen
		1682	* and hope for the best.
		1683	* Damnit, SvPV_nolen still trips over yet another assertion. This
		1684	* assertion business is seriously broken, try yet another workaround
		1685	* for the broken -DDEBUGGING.
		1686	*/
		1687	{
		1688	#ifdef DEBUGGING
		1689	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
		1690	#else
		1691	STRLEN offset = SvCUR (string);
		1692	#endif
		1693
		1694	if (offset > json->max_size && json->max_size)
1418	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1695	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1419	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));	1696	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
		1697	}
1420		1698
1421	if (json->flags & F_UTF8)	1699	if (DECODE_WANTS_OCTETS (json))
1422	sv_utf8_downgrade (string, 0);	1700	sv_utf8_downgrade (string, 0);
1423	else	1701	else
1424	sv_utf8_upgrade (string);	1702	sv_utf8_upgrade (string);
1425		1703
1426	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1704	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1427		1705
1428	dec.json = *json;	1706	dec.json = *json;
1429	dec.cur = SvPVX (string);	1707	dec.cur = SvPVX (string);
1430	dec.end = SvEND (string);	1708	dec.end = SvEND (string);
1431	dec.err = 0;	1709	dec.err = 0;
1432	dec.depth = 0;	1710	dec.depth = 0;
1433	dec.maxdepth = DEC_DEPTH (dec.json.flags);
1434		1711
1435	if (dec.json.cb_object \|\| dec.json.cb_sk_object)	1712	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
1436	dec.json.flags \|= F_HOOK;	1713	dec.json.flags \|= F_HOOK;
1437		1714
1438	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1715	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
1439		1716
1440	decode_ws (&dec);	1717	decode_ws (&dec);
1441	sv = decode_sv (&dec);	1718	sv = decode_sv (&dec);
		1719
		1720	if (offset_return)
		1721	*offset_return = dec.cur;
1442		1722
1443	if (!(offset_return \|\| !sv))	1723	if (!(offset_return \|\| !sv))
1444	{	1724	{
1445	// check for trailing garbage	1725	// check for trailing garbage
1446	decode_ws (&dec);	1726	decode_ws (&dec);
…		…
1449	{	1729	{
1450	dec.err = "garbage after JSON object";	1730	dec.err = "garbage after JSON object";
1451	SvREFCNT_dec (sv);	1731	SvREFCNT_dec (sv);
1452	sv = 0;	1732	sv = 0;
1453	}	1733	}
1454	}
1455
1456	if (offset_return \|\| !sv)
1457	{
1458	offset = dec.json.flags & F_UTF8
1459	? dec.cur - SvPVX (string)
1460	: utf8_distance (dec.cur, SvPVX (string));
1461
1462	if (offset_return)
1463	*offset_return = offset;
1464	}	1734	}
1465		1735
1466	if (!sv)	1736	if (!sv)
1467	{	1737	{
1468	SV *uni = sv_newmortal ();	1738	SV *uni = sv_newmortal ();
…		…
1474	SAVEVPTR (PL_curcop);	1744	SAVEVPTR (PL_curcop);
1475	PL_curcop = &cop;	1745	PL_curcop = &cop;
1476	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1746	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1477	LEAVE;	1747	LEAVE;
1478		1748
1479	croak ("%s, at character offset %d [\"%s\"]",	1749	croak ("%s, at character offset %d (before \"%s\")",
1480	dec.err,	1750	dec.err,
1481	(int)offset,	1751	(int)ptr_to_index (string, dec.cur),
1482	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1752	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1483	}	1753	}
1484		1754
1485	sv = sv_2mortal (sv);	1755	sv = sv_2mortal (sv);
1486		1756
…		…
1495		1765
1496	static void	1766	static void
1497	incr_parse (JSON *self)	1767	incr_parse (JSON *self)
1498	{	1768	{
1499	const char *p = SvPVX (self->incr_text) + self->incr_pos;	1769	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1770
		1771	// the state machine here is a bit convoluted and could be simplified a lot
		1772	// but this would make it slower, so...
1500		1773
1501	for (;;)	1774	for (;;)
1502	{	1775	{
1503	//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	1776	//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
1504	switch (self->incr_mode)	1777	switch (self->incr_mode)
1505	{	1778	{
1506	// only used for intiial whitespace skipping	1779	// only used for initial whitespace skipping
1507	case INCR_M_WS:	1780	case INCR_M_WS:
1508	for (;;)	1781	for (;;)
1509	{	1782	{
1510	if (*p > 0x20)	1783	if (*p > 0x20)
1511	{	1784	{
		1785	if (*p == '#')
		1786	{
		1787	self->incr_mode = INCR_M_C0;
		1788	goto incr_m_c;
		1789	}
		1790	else
		1791	{
1512	self->incr_mode = INCR_M_JSON;	1792	self->incr_mode = INCR_M_JSON;
1513	goto incr_m_json;	1793	goto incr_m_json;
		1794	}
1514	}	1795	}
1515	else if (!*p)	1796	else if (!*p)
1516	goto interrupt;	1797	goto interrupt;
1517		1798
1518	++p;	1799	++p;
…		…
1524	goto interrupt;	1805	goto interrupt;
1525		1806
1526	++p;	1807	++p;
1527	self->incr_mode = INCR_M_STR;	1808	self->incr_mode = INCR_M_STR;
1528	goto incr_m_str;	1809	goto incr_m_str;
		1810
		1811	// inside #-style comments
		1812	case INCR_M_C0:
		1813	case INCR_M_C1:
		1814	incr_m_c:
		1815	for (;;)
		1816	{
		1817	if (*p == '\n')
		1818	{
		1819	self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON;
		1820	break;
		1821	}
		1822	else if (!*p)
		1823	goto interrupt;
		1824
		1825	++p;
		1826	}
		1827
		1828	break;
1529		1829
1530	// inside a string	1830	// inside a string
1531	case INCR_M_STR:	1831	case INCR_M_STR:
1532	incr_m_str:	1832	incr_m_str:
1533	for (;;)	1833	for (;;)
…		…
1584	self->incr_mode = INCR_M_STR;	1884	self->incr_mode = INCR_M_STR;
1585	goto incr_m_str;	1885	goto incr_m_str;
1586		1886
1587	case '[':	1887	case '[':
1588	case '{':	1888	case '{':
		1889	case '(':
1589	++self->incr_nest;	1890	if (++self->incr_nest > self->max_depth)
		1891	croak (ERR_NESTING_EXCEEDED);
1590	break;	1892	break;
1591		1893
1592	case ']':	1894	case ']':
1593	case '}':	1895	case '}':
1594	if (!--self->incr_nest)	1896	if (--self->incr_nest <= 0)
1595	goto interrupt;	1897	goto interrupt;
		1898	break;
		1899
		1900	case ')':
		1901	--self->incr_nest;
		1902	break;
		1903
		1904	case '#':
		1905	self->incr_mode = INCR_M_C1;
		1906	goto incr_m_c;
1596	}	1907	}
1597	}	1908	}
1598	}	1909	}
1599		1910
1600	modechange:	1911	modechange:
1601	;	1912	;
1602	}	1913	}
1603		1914
1604	interrupt:	1915	interrupt:
1605	self->incr_pos = p - SvPVX (self->incr_text);	1916	self->incr_pos = p - SvPVX (self->incr_text);
		1917	//printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D
1606	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D	1918	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
1607	}	1919	}
1608		1920
1609	/////////////////////////////////////////////////////////////////////////////	1921	/////////////////////////////////////////////////////////////////////////////
1610	// XS interface functions	1922	// XS interface functions
…		…
1620	i >= '0' && i <= '9' ? i - '0'	1932	i >= '0' && i <= '9' ? i - '0'
1621	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1933	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1622	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1934	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1623	: -1;	1935	: -1;
1624		1936
1625	json_stash = gv_stashpv ("JSON::XS" , 1);	1937	json_stash = gv_stashpv ("JSON::XS" , 1);
1626	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	1938	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1627		1939
1628	json_true = get_bool ("JSON::XS::true");	1940	types_true = get_bool ("Types::Serialiser::true");
1629	json_false = get_bool ("JSON::XS::false");	1941	types_false = get_bool ("Types::Serialiser::false");
		1942
		1943	sv_json = newSVpv ("JSON", 0);
		1944	SvREADONLY_on (sv_json);
		1945
		1946	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1630	}	1947	}
1631		1948
1632	PROTOTYPES: DISABLE	1949	PROTOTYPES: DISABLE
1633		1950
1634	void CLONE (...)	1951	void CLONE (...)
1635	CODE:	1952	CODE:
1636	json_stash = 0;	1953	json_stash = 0;
1637	json_boolean_stash = 0;	1954	types_boolean_stash = 0;
1638		1955
1639	void new (char *klass)	1956	void new (char *klass)
1640	PPCODE:	1957	PPCODE:
1641	{	1958	{
1642	SV *pv = NEWSV (0, sizeof (JSON));	1959	SV *pv = NEWSV (0, sizeof (JSON));
1643	SvPOK_only (pv);	1960	SvPOK_only (pv);
1644	Zero (SvPVX (pv), 1, JSON);	1961	json_init ((JSON *)SvPVX (pv));
1645	((JSON *)SvPVX (pv))->flags = F_DEFAULT;
1646	XPUSHs (sv_2mortal (sv_bless (	1962	XPUSHs (sv_2mortal (sv_bless (
1647	newRV_noinc (pv),	1963	newRV_noinc (pv),
1648	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	1964	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1649	)));	1965	)));
1650	}	1966	}
…		…
1663	shrink = F_SHRINK	1979	shrink = F_SHRINK
1664	allow_blessed = F_ALLOW_BLESSED	1980	allow_blessed = F_ALLOW_BLESSED
1665	convert_blessed = F_CONV_BLESSED	1981	convert_blessed = F_CONV_BLESSED
1666	relaxed = F_RELAXED	1982	relaxed = F_RELAXED
1667	allow_unknown = F_ALLOW_UNKNOWN	1983	allow_unknown = F_ALLOW_UNKNOWN
		1984	allow_tags = F_ALLOW_TAGS
1668	PPCODE:	1985	PPCODE:
1669	{	1986	{
1670	if (enable)	1987	if (enable)
1671	self->flags \|= ix;	1988	self->flags \|= ix;
1672	else	1989	else
…		…
1688	get_shrink = F_SHRINK	2005	get_shrink = F_SHRINK
1689	get_allow_blessed = F_ALLOW_BLESSED	2006	get_allow_blessed = F_ALLOW_BLESSED
1690	get_convert_blessed = F_CONV_BLESSED	2007	get_convert_blessed = F_CONV_BLESSED
1691	get_relaxed = F_RELAXED	2008	get_relaxed = F_RELAXED
1692	get_allow_unknown = F_ALLOW_UNKNOWN	2009	get_allow_unknown = F_ALLOW_UNKNOWN
		2010	get_allow_tags = F_ALLOW_TAGS
1693	PPCODE:	2011	PPCODE:
1694	XPUSHs (boolSV (self->flags & ix));	2012	XPUSHs (boolSV (self->flags & ix));
1695		2013
1696	void max_depth (JSON *self, UV max_depth = 0x80000000UL)	2014	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1697	PPCODE:	2015	PPCODE:
1698	{	2016	self->max_depth = max_depth;
1699	UV log2 = 0;
1700
1701	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1702
1703	while ((1UL << log2) < max_depth)
1704	++log2;
1705
1706	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1707
1708	XPUSHs (ST (0));	2017	XPUSHs (ST (0));
1709	}
1710		2018
1711	U32 get_max_depth (JSON *self)	2019	U32 get_max_depth (JSON *self)
1712	CODE:	2020	CODE:
1713	RETVAL = DEC_DEPTH (self->flags);	2021	RETVAL = self->max_depth;
1714	OUTPUT:	2022	OUTPUT:
1715	RETVAL	2023	RETVAL
1716		2024
1717	void max_size (JSON *self, UV max_size = 0)	2025	void max_size (JSON *self, U32 max_size = 0)
1718	PPCODE:	2026	PPCODE:
1719	{	2027	self->max_size = max_size;
1720	UV log2 = 0;
1721
1722	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
1723	if (max_size == 1) max_size = 2;
1724
1725	while ((1UL << log2) < max_size)
1726	++log2;
1727
1728	self->flags = self->flags & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
1729
1730	XPUSHs (ST (0));	2028	XPUSHs (ST (0));
1731	}
1732		2029
1733	int get_max_size (JSON *self)	2030	int get_max_size (JSON *self)
1734	CODE:	2031	CODE:
1735	RETVAL = DEC_SIZE (self->flags);	2032	RETVAL = self->max_size;
1736	OUTPUT:	2033	OUTPUT:
1737	RETVAL	2034	RETVAL
1738		2035
1739	void filter_json_object (JSON self, SV cb = &PL_sv_undef)	2036	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1740	PPCODE:	2037	PPCODE:
…		…
1746	}	2043	}
1747		2044
1748	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2045	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1749	PPCODE:	2046	PPCODE:
1750	{	2047	{
1751	if (!self->cb_sk_object)	2048	if (!self->cb_sk_object)
1752	self->cb_sk_object = newHV ();	2049	self->cb_sk_object = newHV ();
1753		2050
1754	if (SvOK (cb))	2051	if (SvOK (cb))
1755	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2052	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1756	else	2053	else
…		…
1767	XPUSHs (ST (0));	2064	XPUSHs (ST (0));
1768	}	2065	}
1769		2066
1770	void encode (JSON self, SV scalar)	2067	void encode (JSON self, SV scalar)
1771	PPCODE:	2068	PPCODE:
1772	XPUSHs (encode_json (scalar, self));	2069	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2070	XPUSHs (scalar);
1773		2071
1774	void decode (JSON self, SV jsonstr)	2072	void decode (JSON self, SV jsonstr)
1775	PPCODE:	2073	PPCODE:
1776	XPUSHs (decode_json (jsonstr, self, 0));	2074	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2075	XPUSHs (jsonstr);
1777		2076
1778	void decode_prefix (JSON self, SV jsonstr)	2077	void decode_prefix (JSON self, SV jsonstr)
1779	PPCODE:	2078	PPCODE:
1780	{	2079	{
1781	STRLEN offset;	2080	SV *sv;
		2081	char *offset;
		2082	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1782	EXTEND (SP, 2);	2083	EXTEND (SP, 2);
1783	PUSHs (decode_json (jsonstr, self, &offset));	2084	PUSHs (sv);
1784	PUSHs (sv_2mortal (newSVuv (offset)));	2085	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));
1785	}	2086	}
1786		2087
1787	void incr_parse (JSON self, SV jsonstr = 0)	2088	void incr_parse (JSON self, SV jsonstr = 0)
1788	PPCODE:	2089	PPCODE:
1789	{	2090	{
1790	if (!self->incr_text)	2091	if (!self->incr_text)
1791	self->incr_text = newSVpvn ("", 0);	2092	self->incr_text = newSVpvn ("", 0);
		2093
		2094	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2095	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2096	if (DECODE_WANTS_OCTETS (self))
		2097	{
		2098	if (self->incr_pos)
		2099	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2100	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2101
		2102	sv_utf8_downgrade (self->incr_text, 0);
		2103	}
		2104	else
		2105	{
		2106	sv_utf8_upgrade (self->incr_text);
		2107
		2108	if (self->incr_pos)
		2109	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2110	- (U8 *)SvPVX (self->incr_text);
		2111	}
1792		2112
1793	// append data, if any	2113	// append data, if any
1794	if (jsonstr)	2114	if (jsonstr)
1795	{	2115	{
		2116	/* make sure both strings have same encoding */
1796	if (SvUTF8 (jsonstr) && !SvUTF8 (self->incr_text))	2117	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
		2118	if (SvUTF8 (jsonstr))
		2119	sv_utf8_downgrade (jsonstr, 0);
1797	{	2120	else
1798	/* utf-8-ness differs, need to upgrade */
1799	sv_utf8_upgrade (self->incr_text);	2121	sv_utf8_upgrade (jsonstr);
1800		2122
1801	if (self->incr_pos)	2123	/* and then just blindly append */
1802	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
1803	- (U8 *)SvPVX (self->incr_text);
1804	}
1805
1806	{	2124	{
1807	STRLEN len;	2125	STRLEN len;
1808	const char *str = SvPV (jsonstr, len);	2126	const char *str = SvPV (jsonstr, len);
1809	SvGROW (self->incr_text, SvCUR (self->incr_text) + len + 1);	2127	STRLEN cur = SvCUR (self->incr_text);
		2128
		2129	if (SvLEN (self->incr_text) <= cur + len)
		2130	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
		2131
1810	Move (str, SvEND (self->incr_text), len, char);	2132	Move (str, SvEND (self->incr_text), len, char);
1811	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);	2133	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
1812	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there	2134	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1813	}	2135	}
1814	}	2136	}
1815		2137
1816	if (GIMME_V != G_VOID)	2138	if (GIMME_V != G_VOID)
1817	do	2139	do
1818	{	2140	{
		2141	SV *sv;
1819	STRLEN offset;	2142	char *offset;
1820		2143
1821	if (!INCR_DONE (self))	2144	if (!INCR_DONE (self))
1822	{	2145	{
1823	incr_parse (self);	2146	incr_parse (self);
		2147
		2148	if (self->incr_pos > self->max_size && self->max_size)
		2149	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		2150	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
		2151
1824	if (!INCR_DONE (self))	2152	if (!INCR_DONE (self))
		2153	{
		2154	// as an optimisation, do not accumulate white space in the incr buffer
		2155	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2156	{
		2157	self->incr_pos = 0;
		2158	SvCUR_set (self->incr_text, 0);
		2159	}
		2160
1825	break;	2161	break;
		2162	}
1826	}	2163	}
1827		2164
1828	XPUSHs (decode_json (self->incr_text, self, &offset));	2165	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2166	XPUSHs (sv);
1829		2167
1830	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + offset);
1831	self->incr_pos -= offset;	2168	self->incr_pos -= offset - SvPVX (self->incr_text);
1832	self->incr_nest = 0;	2169	self->incr_nest = 0;
1833	self->incr_mode = 0;	2170	self->incr_mode = 0;
		2171
		2172	sv_chop (self->incr_text, offset);
1834	}	2173	}
1835	while (GIMME_V == G_ARRAY);	2174	while (GIMME_V == G_ARRAY);
1836	}	2175	}
1837		2176
1838	SV incr_text (JSON self)	2177	SV incr_text (JSON self)
…		…
1857	self->incr_nest = 0;	2196	self->incr_nest = 0;
1858	self->incr_mode = 0;	2197	self->incr_mode = 0;
1859	}	2198	}
1860	}	2199	}
1861		2200
		2201	void incr_reset (JSON *self)
		2202	CODE:
		2203	{
		2204	SvREFCNT_dec (self->incr_text);
		2205	self->incr_text = 0;
		2206	self->incr_pos = 0;
		2207	self->incr_nest = 0;
		2208	self->incr_mode = 0;
		2209	}
		2210
1862	void DESTROY (JSON *self)	2211	void DESTROY (JSON *self)
1863	CODE:	2212	CODE:
1864	SvREFCNT_dec (self->cb_sk_object);	2213	SvREFCNT_dec (self->cb_sk_object);
1865	SvREFCNT_dec (self->cb_object);	2214	SvREFCNT_dec (self->cb_object);
1866	SvREFCNT_dec (self->incr_text);	2215	SvREFCNT_dec (self->incr_text);
1867		2216
1868	PROTOTYPES: ENABLE	2217	PROTOTYPES: ENABLE
1869		2218
1870	void encode_json (SV *scalar)	2219	void encode_json (SV *scalar)
1871	ALIAS:
1872	to_json_ = 0
1873	encode_json = F_UTF8
1874	PPCODE:	2220	PPCODE:
1875	{	2221	{
1876	JSON json = { F_DEFAULT \| ix };	2222	JSON json;
1877	XPUSHs (encode_json (scalar, &json));	2223	json_init (&json);
		2224	json.flags \|= F_UTF8;
		2225	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2226	XPUSHs (scalar);
1878	}	2227	}
1879		2228
1880	void decode_json (SV *jsonstr)	2229	void decode_json (SV *jsonstr)
1881	ALIAS:
1882	from_json_ = 0
1883	decode_json = F_UTF8
1884	PPCODE:	2230	PPCODE:
1885	{	2231	{
1886	JSON json = { F_DEFAULT \| ix };	2232	JSON json;
1887	XPUSHs (decode_json (jsonstr, &json, 0));	2233	json_init (&json);
		2234	json.flags \|= F_UTF8;
		2235	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2236	XPUSHs (jsonstr);
1888	}	2237	}
1889		2238
1890

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Comparing JSON-XS/XS.xs (file contents): Revision 1.84 by root, Thu Mar 27 06:37:35 2008 UTC vs. Revision 1.125 by root, Sun Feb 21 15:37:53 2016 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.84 by root, Thu Mar 27 06:37:35 2008 UTC vs.
Revision 1.125 by root, Sun Feb 21 15:37:53 2016 UTC