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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.98 by root, Fri Jul 17 14:33:45 2009 UTC vs.
Revision 1.133 by root, Tue Aug 28 16:16:17 2018 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
12	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	13	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
13	# define snprintf _snprintf // C compilers have this in stdio.h	14	# define snprintf _snprintf // C compilers have this in stdio.h
14	#endif	15	#endif
15		16
16	// some old perls do not have this, try to make it work, no	17	// some old perls do not have this, try to make it work, no
17	// guarentees, though. if it breaks, you get to keep the pieces.	18	// guarantees, though. if it breaks, you get to keep the pieces.
18	#ifndef UTF8_MAXBYTES	19	#ifndef UTF8_MAXBYTES
19	# define UTF8_MAXBYTES 13	20	# define UTF8_MAXBYTES 13
20	#endif	21	#endif
21		22
		23	// compatibility with perl <5.18
		24	#ifndef HvNAMELEN_get
		25	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		26	#endif
		27	#ifndef HvNAMELEN
		28	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		29	#endif
		30	#ifndef HvNAMEUTF8
		31	# define HvNAMEUTF8(hv) 0
		32	#endif
		33
		34	// three extra for rounding, sign, and end of string
22	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 2)	35	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)
23		36
24	#define F_ASCII 0x00000001UL	37	#define F_ASCII 0x00000001UL
25	#define F_LATIN1 0x00000002UL	38	#define F_LATIN1 0x00000002UL
26	#define F_UTF8 0x00000004UL	39	#define F_UTF8 0x00000004UL
27	#define F_INDENT 0x00000008UL	40	#define F_INDENT 0x00000008UL
…		…
32	#define F_SHRINK 0x00000200UL	45	#define F_SHRINK 0x00000200UL
33	#define F_ALLOW_BLESSED 0x00000400UL	46	#define F_ALLOW_BLESSED 0x00000400UL
34	#define F_CONV_BLESSED 0x00000800UL	47	#define F_CONV_BLESSED 0x00000800UL
35	#define F_RELAXED 0x00001000UL	48	#define F_RELAXED 0x00001000UL
36	#define F_ALLOW_UNKNOWN 0x00002000UL	49	#define F_ALLOW_UNKNOWN 0x00002000UL
		50	#define F_ALLOW_TAGS 0x00004000UL
37	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing	51	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
38		52
39	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	53	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
40		54
41	#define INIT_SIZE 32 // initial scalar size to be allocated	55	#define INIT_SIZE 32 // initial scalar size to be allocated
42	#define INDENT_STEP 3 // spaces per indentation level	56	#define INDENT_STEP 3 // spaces per indentation level
43		57
44	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size	58	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
		59
		60	#define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8)
45		61
46	#define SB do {	62	#define SB do {
47	#define SE } while (0)	63	#define SE } while (0)
48		64
49	#if __GNUC__ >= 3	65	#if __GNUC__ >= 3
…		…
62	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	78	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
63		79
64	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"	80	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"
65		81
66	#ifdef USE_ITHREADS	82	#ifdef USE_ITHREADS
67	# define JSON_SLOW 1
68	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))	83	# define JSON_STASH (expect_true (json_stash) ? json_stash : gv_stashpv ("JSON::XS", 1))
		84	# define BOOL_STASH (expect_true (bool_stash) ? bool_stash : gv_stashpv ("Types::Serialiser::Boolean", 1))
		85	# define GET_BOOL(value) (expect_true (bool_ ## value) ? bool_ ## value : get_bool ("Types::Serialiser::" # value))
69	#else	86	#else
70	# define JSON_SLOW 0
71	# define JSON_STASH json_stash	87	# define JSON_STASH json_stash
		88	# define BOOL_STASH bool_stash
		89	# define GET_BOOL(value) bool_ ## value
72	#endif	90	#endif
73		91
74	static HV json_stash, json_boolean_stash; // JSON::XS::	92	// the amount of HEs to allocate on the stack, when sorting keys
75	static SV json_true, json_false;	93	#define STACK_HES 64
		94
		95	static HV json_stash, bool_stash; // JSON::XS::, Types::Serialiser::Boolean::
		96	static SV bool_false, bool_true;
		97	static SV *sv_json;
76		98
77	enum {	99	enum {
78	INCR_M_WS = 0, // initial whitespace skipping, must be 0	100	INCR_M_WS = 0, // initial whitespace skipping, must be 0
79	INCR_M_STR, // inside string	101	INCR_M_STR, // inside string
80	INCR_M_BS, // inside backslash	102	INCR_M_BS, // inside backslash
		103	INCR_M_C0, // inside comment in initial whitespace sequence
		104	INCR_M_C1, // inside comment in other places
81	INCR_M_JSON // outside anything, count nesting	105	INCR_M_JSON // outside anything, count nesting
82	};	106	};
83		107
84	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)	108	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)
85		109
…		…
94	// for the incremental parser	118	// for the incremental parser
95	SV *incr_text; // the source text so far	119	SV *incr_text; // the source text so far
96	STRLEN incr_pos; // the current offset into the text	120	STRLEN incr_pos; // the current offset into the text
97	int incr_nest; // {[]}-nesting level	121	int incr_nest; // {[]}-nesting level
98	unsigned char incr_mode;	122	unsigned char incr_mode;
		123
		124	SV v_false, v_true;
99	} JSON;	125	} JSON;
100		126
101	INLINE void	127	INLINE void
102	json_init (JSON *json)	128	json_init (JSON *json)
103	{	129	{
…		…
132	SvPV_renew (sv, SvCUR (sv) + 1);	158	SvPV_renew (sv, SvCUR (sv) + 1);
133	#endif	159	#endif
134	}	160	}
135	}	161	}
136		162
		163	/* adds two STRLENs together, slow, and with paranoia */
		164	STRLEN
		165	strlen_sum (STRLEN l1, STRLEN l2)
		166	{
		167	size_t sum = l1 + l2;
		168
		169	if (sum < (size_t)l2 \|\| sum != (size_t)(STRLEN)sum)
		170	croak ("JSON::XS: string size overflow");
		171
		172	return sum;
		173	}
		174
		175	/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */
		176	static char *
		177	json_sv_grow (SV *sv, size_t len1, size_t len2)
		178	{
		179	len1 = strlen_sum (len1, len2);
		180	len1 = strlen_sum (len1, len1 >> 1);
		181
		182	if (len1 > 4096 - 24)
		183	len1 = (len1 \| 4095) - 24;
		184
		185	return SvGROW (sv, len1);
		186	}
		187
137	// decode an utf-8 character and return it, or (UV)-1 in	188	// decode a utf-8 character and return it, or (UV)-1 in
138	// case of an error.	189	// case of an error.
139	// we special-case "safe" characters from U+80 .. U+7FF,	190	// we special-case "safe" characters from U+80 .. U+7FF,
140	// but use the very good perl function to parse anything else.	191	// but use the very good perl function to parse anything else.
141	// note that we never call this function for a ascii codepoints	192	// note that we never call this function for a ascii codepoints
142	INLINE UV	193	INLINE UV
…		…
185	? utf8_distance (offset, SvPVX (sv))	236	? utf8_distance (offset, SvPVX (sv))
186	: offset - SvPVX (sv);	237	: offset - SvPVX (sv);
187	}	238	}
188		239
189	/////////////////////////////////////////////////////////////////////////////	240	/////////////////////////////////////////////////////////////////////////////
		241	// fp hell
		242
		243	// scan a group of digits, and a trailing exponent
		244	static void
		245	json_atof_scan1 (const char s, NV accum, int *expo, int postdp, int maxdepth)
		246	{
		247	UV uaccum = 0;
		248	int eaccum = 0;
		249
		250	// if we recurse too deep, skip all remaining digits
		251	// to avoid a stack overflow attack
		252	if (expect_false (--maxdepth <= 0))
		253	while (((U8)*s - '0') < 10)
		254	++s;
		255
		256	for (;;)
		257	{
		258	U8 dig = (U8)*s - '0';
		259
		260	if (expect_false (dig >= 10))
		261	{
		262	if (dig == (U8)((U8)'.' - (U8)'0'))
		263	{
		264	++s;
		265	json_atof_scan1 (s, accum, expo, 1, maxdepth);
		266	}
		267	else if ((dig \| ' ') == 'e' - '0')
		268	{
		269	int exp2 = 0;
		270	int neg = 0;
		271
		272	++s;
		273
		274	if (*s == '-')
		275	{
		276	++s;
		277	neg = 1;
		278	}
		279	else if (*s == '+')
		280	++s;
		281
		282	while ((dig = (U8)*s - '0') < 10)
		283	exp2 = exp2 * 10 + *s++ - '0';
		284
		285	*expo += neg ? -exp2 : exp2;
		286	}
		287
		288	break;
		289	}
		290
		291	++s;
		292
		293	uaccum = uaccum * 10 + dig;
		294	++eaccum;
		295
		296	// if we have too many digits, then recurse for more
		297	// we actually do this for rather few digits
		298	if (uaccum >= (UV_MAX - 9) / 10)
		299	{
		300	if (postdp) *expo -= eaccum;
		301	json_atof_scan1 (s, accum, expo, postdp, maxdepth);
		302	if (postdp) *expo += eaccum;
		303
		304	break;
		305	}
		306	}
		307
		308	// this relies greatly on the quality of the pow ()
		309	// implementation of the platform, but a good
		310	// implementation is hard to beat.
		311	// (IEEE 754 conformant ones are required to be exact)
		312	if (postdp) *expo -= eaccum;
		313	accum += uaccum Perl_pow (10., *expo);
		314	*expo += eaccum;
		315	}
		316
		317	static NV
		318	json_atof (const char *s)
		319	{
		320	NV accum = 0.;
		321	int expo = 0;
		322	int neg = 0;
		323
		324	if (*s == '-')
		325	{
		326	++s;
		327	neg = 1;
		328	}
		329
		330	// a recursion depth of ten gives us >>500 bits
		331	json_atof_scan1 (s, &accum, &expo, 0, 10);
		332
		333	return neg ? -accum : accum;
		334	}
		335
		336	// target of scalar reference is bool? -1 == nope, 0 == false, 1 == true
		337	static int
		338	ref_bool_type (SV *sv)
		339	{
		340	svtype svt = SvTYPE (sv);
		341
		342	if (svt < SVt_PVAV)
		343	{
		344	STRLEN len = 0;
		345	char *pv = svt ? SvPV (sv, len) : 0;
		346
		347	if (len == 1)
		348	if (*pv == '1')
		349	return 1;
		350	else if (*pv == '0')
		351	return 0;
		352	}
		353
		354	return -1;
		355	}
		356
		357	// returns whether scalar is not a reference in the sense of allow_nonref
		358	static int
		359	json_nonref (SV *scalar)
		360	{
		361	if (!SvROK (scalar))
		362	return 1;
		363
		364	scalar = SvRV (scalar);
		365
		366	if (SvTYPE (scalar) >= SVt_PVMG)
		367	{
		368	if (SvSTASH (scalar) == bool_stash)
		369	return 1;
		370
		371	if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0)
		372	return 1;
		373	}
		374
		375	return 0;
		376	}
		377
		378	/////////////////////////////////////////////////////////////////////////////
190	// encoder	379	// encoder
191		380
192	// structure used for encoding JSON	381	// structure used for encoding JSON
193	typedef struct	382	typedef struct
194	{	383	{
…		…
201	} enc_t;	390	} enc_t;
202		391
203	INLINE void	392	INLINE void
204	need (enc_t *enc, STRLEN len)	393	need (enc_t *enc, STRLEN len)
205	{	394	{
206	if (expect_false (enc->cur + len >= enc->end))	395	if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
207	{	396	{
208	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	397	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
209	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	398	char *buf = json_sv_grow (enc->sv, cur, len);
210	enc->cur = SvPVX (enc->sv) + cur;	399	enc->cur = buf + cur;
211	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	400	enc->end = buf + SvLEN (enc->sv) - 1;
212	}	401	}
213	}	402	}
214		403
215	INLINE void	404	INLINE void
216	encode_ch (enc_t *enc, char ch)	405	encode_ch (enc_t *enc, char ch)
…		…
232		421
233	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case	422	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
234	{	423	{
235	if (expect_false (ch == '"')) // but with slow exceptions	424	if (expect_false (ch == '"')) // but with slow exceptions
236	{	425	{
237	need (enc, len += 1);	426	need (enc, len + 1);
238	*enc->cur++ = '\\';	427	*enc->cur++ = '\\';
239	*enc->cur++ = '"';	428	*enc->cur++ = '"';
240	}	429	}
241	else if (expect_false (ch == '\\'))	430	else if (expect_false (ch == '\\'))
242	{	431	{
243	need (enc, len += 1);	432	need (enc, len + 1);
244	*enc->cur++ = '\\';	433	*enc->cur++ = '\\';
245	*enc->cur++ = '\\';	434	*enc->cur++ = '\\';
246	}	435	}
247	else	436	else
248	*enc->cur++ = ch;	437	*enc->cur++ = ch;
…		…
251	}	440	}
252	else	441	else
253	{	442	{
254	switch (ch)	443	switch (ch)
255	{	444	{
256	case '\010': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;	445	case '\010': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;
257	case '\011': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 't'; ++str; break;	446	case '\011': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 't'; ++str; break;
258	case '\012': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;	447	case '\012': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;
259	case '\014': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;	448	case '\014': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;
260	case '\015': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;	449	case '\015': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;
261		450
262	default:	451	default:
263	{	452	{
264	STRLEN clen;	453	STRLEN clen;
265	UV uch;	454	UV uch;
…		…
281	if (uch >= 0x10000UL)	470	if (uch >= 0x10000UL)
282	{	471	{
283	if (uch >= 0x110000UL)	472	if (uch >= 0x110000UL)
284	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);	473	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
285		474
286	need (enc, len += 11);	475	need (enc, len + 11);
287	sprintf (enc->cur, "\\u%04x\\u%04x",	476	sprintf (enc->cur, "\\u%04x\\u%04x",
288	(int)((uch - 0x10000) / 0x400 + 0xD800),	477	(int)((uch - 0x10000) / 0x400 + 0xD800),
289	(int)((uch - 0x10000) % 0x400 + 0xDC00));	478	(int)((uch - 0x10000) % 0x400 + 0xDC00));
290	enc->cur += 12;	479	enc->cur += 12;
291	}	480	}
292	else	481	else
293	{	482	{
294	need (enc, len += 5);	483	need (enc, len + 5);
295	*enc->cur++ = '\\';	484	*enc->cur++ = '\\';
296	*enc->cur++ = 'u';	485	*enc->cur++ = 'u';
297	*enc->cur++ = PL_hexdigit [ uch >> 12 ];	486	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
298	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];	487	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
299	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];	488	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
…		…
307	*enc->cur++ = uch;	496	*enc->cur++ = uch;
308	str += clen;	497	str += clen;
309	}	498	}
310	else if (is_utf8)	499	else if (is_utf8)
311	{	500	{
312	need (enc, len += clen);	501	need (enc, len + clen);
313	do	502	do
314	{	503	{
315	enc->cur++ = str++;	504	enc->cur++ = str++;
316	}	505	}
317	while (--clen);	506	while (--clen);
318	}	507	}
319	else	508	else
320	{	509	{
321	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed	510	need (enc, len + UTF8_MAXBYTES - 1); // never more than 11 bytes needed
322	enc->cur = encode_utf8 (enc->cur, uch);	511	enc->cur = encode_utf8 (enc->cur, uch);
323	++str;	512	++str;
324	}	513	}
325	}	514	}
326	}	515	}
…		…
380		569
381	if (enc->indent >= enc->json.max_depth)	570	if (enc->indent >= enc->json.max_depth)
382	croak (ERR_NESTING_EXCEEDED);	571	croak (ERR_NESTING_EXCEEDED);
383		572
384	encode_ch (enc, '[');	573	encode_ch (enc, '[');
385		574
386	if (len >= 0)	575	if (len >= 0)
387	{	576	{
388	encode_nl (enc); ++enc->indent;	577	encode_nl (enc); ++enc->indent;
389		578
390	for (i = 0; i <= len; ++i)	579	for (i = 0; i <= len; ++i)
…		…
402	encode_comma (enc);	591	encode_comma (enc);
403	}	592	}
404		593
405	encode_nl (enc); --enc->indent; encode_indent (enc);	594	encode_nl (enc); --enc->indent; encode_indent (enc);
406	}	595	}
407		596
408	encode_ch (enc, ']');	597	encode_ch (enc, ']');
409	}	598	}
410		599
411	static void	600	static void
412	encode_hk (enc_t enc, HE he)	601	encode_hk (enc_t enc, HE he)
…		…
416	if (HeKLEN (he) == HEf_SVKEY)	605	if (HeKLEN (he) == HEf_SVKEY)
417	{	606	{
418	SV *sv = HeSVKEY (he);	607	SV *sv = HeSVKEY (he);
419	STRLEN len;	608	STRLEN len;
420	char *str;	609	char *str;
421		610
422	SvGETMAGIC (sv);	611	SvGETMAGIC (sv);
423	str = SvPV (sv, len);	612	str = SvPV (sv, len);
424		613
425	encode_str (enc, str, len, SvUTF8 (sv));	614	encode_str (enc, str, len, SvUTF8 (sv));
426	}	615	}
…		…
492	}	681	}
493		682
494	if (count)	683	if (count)
495	{	684	{
496	int i, fast = 1;	685	int i, fast = 1;
497	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	686	HE *hes_stack [STACK_HES];
498	HE *hes = _alloca (count sizeof (HE));	687	HE **hes = hes_stack;
499	#else	688
500	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	689	// allocate larger arrays on the heap
501	#endif	690	if (count > STACK_HES)
		691	{
		692	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		693	hes = (HE **)SvPVX (sv);
		694	}
502		695
503	i = 0;	696	i = 0;
504	while ((he = hv_iternext (hv)))	697	while ((he = hv_iternext (hv)))
505	{	698	{
506	hes [i++] = he;	699	hes [i++] = he;
…		…
575	// encode objects, arrays and special \0=false and \1=true values.	768	// encode objects, arrays and special \0=false and \1=true values.
576	static void	769	static void
577	encode_rv (enc_t enc, SV sv)	770	encode_rv (enc_t enc, SV sv)
578	{	771	{
579	svtype svt;	772	svtype svt;
		773	GV *method;
580		774
581	SvGETMAGIC (sv);	775	SvGETMAGIC (sv);
582	svt = SvTYPE (sv);	776	svt = SvTYPE (sv);
583		777
584	if (expect_false (SvOBJECT (sv)))	778	if (expect_false (SvOBJECT (sv)))
585	{	779	{
586	HV *stash = !JSON_SLOW \|\| json_boolean_stash	780	HV *stash = SvSTASH (sv);
587	? json_boolean_stash
588	: gv_stashpv ("JSON::XS::Boolean", 1);
589		781
590	if (SvSTASH (sv) == stash)	782	if (stash == bool_stash)
591	{	783	{
592	if (SvIV (sv))
593	encode_str (enc, "true", 4, 0);	784	if (SvIV (sv)) encode_str (enc, "true" , 4, 0);
594	else
595	encode_str (enc, "false", 5, 0);	785	else encode_str (enc, "false", 5, 0);
596	}	786	}
		787	else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
		788	{
		789	int count;
		790	dSP;
		791
		792	ENTER; SAVETMPS;
		793	SAVESTACK_POS ();
		794	PUSHMARK (SP);
		795	EXTEND (SP, 2);
		796	// we re-bless the reference to get overload and other niceties right
		797	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		798	PUSHs (sv_json);
		799
		800	PUTBACK;
		801	count = call_sv ((SV *)GvCV (method), G_ARRAY);
		802	SPAGAIN;
		803
		804	// catch this surprisingly common error
		805	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		806	croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		807
		808	encode_ch (enc, '(');
		809	encode_ch (enc, '"');
		810	encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
		811	encode_ch (enc, '"');
		812	encode_ch (enc, ')');
		813	encode_ch (enc, '[');
		814
		815	while (count)
		816	{
		817	encode_sv (enc, SP[1 - count--]);
		818
		819	if (count)
		820	encode_ch (enc, ',');
		821	}
		822
		823	encode_ch (enc, ']');
		824
		825	FREETMPS; LEAVE;
		826	}
		827	else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
		828	{
		829	dSP;
		830
		831	ENTER; SAVETMPS;
		832	PUSHMARK (SP);
		833	// we re-bless the reference to get overload and other niceties right
		834	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		835
		836	// calling with G_SCALAR ensures that we always get a 1 return value
		837	PUTBACK;
		838	call_sv ((SV *)GvCV (method), G_SCALAR);
		839	SPAGAIN;
		840
		841	// catch this surprisingly common error
		842	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		843	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		844
		845	sv = POPs;
		846	PUTBACK;
		847
		848	encode_sv (enc, sv);
		849
		850	FREETMPS; LEAVE;
		851	}
		852	else if (enc->json.flags & F_ALLOW_BLESSED)
		853	encode_str (enc, "null", 4, 0);
597	else	854	else
598	{
599	#if 0
600	if (0 && sv_derived_from (rv, "JSON::Literal"))
601	{
602	// not yet
603	}
604	#endif
605	if (enc->json.flags & F_CONV_BLESSED)
606	{
607	// we re-bless the reference to get overload and other niceties right
608	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
609
610	if (to_json)
611	{
612	dSP;
613
614	ENTER; SAVETMPS; PUSHMARK (SP);
615	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
616
617	// calling with G_SCALAR ensures that we always get a 1 return value
618	PUTBACK;
619	call_sv ((SV *)GvCV (to_json), G_SCALAR);
620	SPAGAIN;
621
622	// catch this surprisingly common error
623	if (SvROK (TOPs) && SvRV (TOPs) == sv)
624	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
625
626	sv = POPs;
627	PUTBACK;
628
629	encode_sv (enc, sv);
630
631	FREETMPS; LEAVE;
632	}
633	else if (enc->json.flags & F_ALLOW_BLESSED)
634	encode_str (enc, "null", 4, 0);
635	else
636	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
637	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
638	}
639	else if (enc->json.flags & F_ALLOW_BLESSED)
640	encode_str (enc, "null", 4, 0);
641	else
642	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	855	croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
643	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	856	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
644	}
645	}	857	}
646	else if (svt == SVt_PVHV)	858	else if (svt == SVt_PVHV)
647	encode_hv (enc, (HV *)sv);	859	encode_hv (enc, (HV *)sv);
648	else if (svt == SVt_PVAV)	860	else if (svt == SVt_PVAV)
649	encode_av (enc, (AV *)sv);	861	encode_av (enc, (AV *)sv);
650	else if (svt < SVt_PVAV)	862	else if (svt < SVt_PVAV)
651	{	863	{
652	STRLEN len = 0;	864	int bool_type = ref_bool_type (sv);
653	char *pv = svt ? SvPV (sv, len) : 0;
654		865
655	if (len == 1 && *pv == '1')	866	if (bool_type == 1)
656	encode_str (enc, "true", 4, 0);	867	encode_str (enc, "true", 4, 0);
657	else if (len == 1 && *pv == '0')	868	else if (bool_type == 0)
658	encode_str (enc, "false", 5, 0);	869	encode_str (enc, "false", 5, 0);
659	else if (enc->json.flags & F_ALLOW_UNKNOWN)	870	else if (enc->json.flags & F_ALLOW_UNKNOWN)
660	encode_str (enc, "null", 4, 0);	871	encode_str (enc, "null", 4, 0);
661	else	872	else
662	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	873	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
…		…
725	}	936	}
726	else	937	else
727	{	938	{
728	// large integer, use the (rather slow) snprintf way.	939	// large integer, use the (rather slow) snprintf way.
729	need (enc, IVUV_MAXCHARS);	940	need (enc, IVUV_MAXCHARS);
730	enc->cur +=	941	enc->cur +=
731	SvIsUV(sv)	942	SvIsUV(sv)
732	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	943	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
733	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	944	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
734	}	945	}
735	}	946	}
736	else if (SvROK (sv))	947	else if (SvROK (sv))
737	encode_rv (enc, SvRV (sv));	948	encode_rv (enc, SvRV (sv));
738	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)	949	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
739	encode_str (enc, "null", 4, 0);	950	encode_str (enc, "null", 4, 0);
740	else	951	else
741	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	952	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
742	SvPV_nolen (sv), SvFLAGS (sv));	953	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
743	}	954	}
744		955
745	static SV *	956	static SV *
746	encode_json (SV scalar, JSON json)	957	encode_json (SV scalar, JSON json)
747	{	958	{
748	enc_t enc;	959	enc_t enc;
749		960
750	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	961	if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
751	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	962	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
752		963
753	enc.json = *json;	964	enc.json = *json;
754	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	965	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
755	enc.cur = SvPVX (enc.sv);	966	enc.cur = SvPVX (enc.sv);
…		…
759	: enc.json.flags & F_LATIN1 ? 0x000100UL	970	: enc.json.flags & F_LATIN1 ? 0x000100UL
760	: 0x110000UL;	971	: 0x110000UL;
761		972
762	SvPOK_only (enc.sv);	973	SvPOK_only (enc.sv);
763	encode_sv (&enc, scalar);	974	encode_sv (&enc, scalar);
		975	encode_nl (&enc);
764		976
765	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	977	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
766	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	978	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
767		979
768	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	980	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
…		…
948	else if (expect_true (ch >= 0x20 && ch < 0x80))	1160	else if (expect_true (ch >= 0x20 && ch < 0x80))
949	*cur++ = ch;	1161	*cur++ = ch;
950	else if (ch >= 0x80)	1162	else if (ch >= 0x80)
951	{	1163	{
952	STRLEN clen;	1164	STRLEN clen;
953	UV uch;
954		1165
955	--dec_cur;	1166	--dec_cur;
956		1167
957	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);	1168	decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
958	if (clen == (STRLEN)-1)	1169	if (clen == (STRLEN)-1)
959	ERR ("malformed UTF-8 character in JSON string");	1170	ERR ("malformed UTF-8 character in JSON string");
960		1171
961	do	1172	do
962	cur++ = dec_cur++;	1173	cur++ = dec_cur++;
963	while (--clen);	1174	while (--clen);
964		1175
965	utf8 = 1;	1176	utf8 = 1;
966	}	1177	}
		1178	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1179	*cur++ = ch;
967	else	1180	else
968	{	1181	{
969	--dec_cur;	1182	--dec_cur;
970		1183
971	if (!ch)	1184	if (!ch)
…		…
981		1194
982	if (sv)	1195	if (sv)
983	{	1196	{
984	STRLEN cur = SvCUR (sv);	1197	STRLEN cur = SvCUR (sv);
985		1198
986	if (SvLEN (sv) <= cur + len)	1199	if (SvLEN (sv) - cur <= len)
987	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	1200	json_sv_grow (sv, cur, len);
988		1201
989	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1202	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
990	SvCUR_set (sv, SvCUR (sv) + len);	1203	SvCUR_set (sv, SvCUR (sv) + len);
991	}	1204	}
992	else	1205	else
…		…
1116	}	1329	}
1117		1330
1118	len -= *start == '-' ? 1 : 0;	1331	len -= *start == '-' ? 1 : 0;
1119		1332
1120	// does not fit into IV or UV, try NV	1333	// does not fit into IV or UV, try NV
1121	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1334	if (len <= NV_DIG)
1122	#if defined (LDBL_DIG)
1123	\|\| (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
1124	#endif
1125	)
1126	// fits into NV without loss of precision	1335	// fits into NV without loss of precision
1127	return newSVnv (Atof (start));	1336	return newSVnv (json_atof (start));
1128		1337
1129	// everything else fails, convert it to a string	1338	// everything else fails, convert it to a string
1130	return newSVpvn (start, dec->cur - start);	1339	return newSVpvn (start, dec->cur - start);
1131	}	1340	}
1132		1341
1133	// loss of precision here	1342	// loss of precision here
1134	return newSVnv (Atof (start));	1343	return newSVnv (json_atof (start));
1135		1344
1136	fail:	1345	fail:
1137	return 0;	1346	return 0;
1138	}	1347	}
1139		1348
…		…
1163	if (*dec->cur == ']')	1372	if (*dec->cur == ']')
1164	{	1373	{
1165	++dec->cur;	1374	++dec->cur;
1166	break;	1375	break;
1167	}	1376	}
1168		1377
1169	if (*dec->cur != ',')	1378	if (*dec->cur != ',')
1170	ERR (", or ] expected while parsing array");	1379	ERR (", or ] expected while parsing array");
1171		1380
1172	++dec->cur;	1381	++dec->cur;
1173		1382
…		…
1297		1506
1298	hv_iterinit (hv);	1507	hv_iterinit (hv);
1299	he = hv_iternext (hv);	1508	he = hv_iternext (hv);
1300	hv_iterinit (hv);	1509	hv_iterinit (hv);
1301		1510
1302	// the next line creates a mortal sv each time its called.	1511	// the next line creates a mortal sv each time it's called.
1303	// might want to optimise this for common cases.	1512	// might want to optimise this for common cases.
1304	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);	1513	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1305		1514
1306	if (cb)	1515	if (cb)
1307	{	1516	{
1308	dSP;	1517	dSP;
1309	int count;	1518	int count;
1310		1519
1311	ENTER; SAVETMPS; PUSHMARK (SP);	1520	ENTER; SAVETMPS;
		1521	SAVESTACK_POS ();
		1522	PUSHMARK (SP);
1312	XPUSHs (HeVAL (he));	1523	XPUSHs (HeVAL (he));
		1524	sv_2mortal (sv);
1313		1525
1314	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1526	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1315		1527
1316	if (count == 1)	1528	if (count == 1)
1317	{	1529	{
1318	sv = newSVsv (POPs);	1530	sv = newSVsv (POPs);
1319	FREETMPS; LEAVE;	1531	FREETMPS; LEAVE;
1320	return sv;	1532	return sv;
1321	}	1533	}
1322		1534
		1535	SvREFCNT_inc (sv);
1323	FREETMPS; LEAVE;	1536	FREETMPS; LEAVE;
1324	}	1537	}
1325	}	1538	}
1326		1539
1327	if (dec->json.cb_object)	1540	if (dec->json.cb_object)
1328	{	1541	{
1329	dSP;	1542	dSP;
1330	int count;	1543	int count;
1331		1544
1332	ENTER; SAVETMPS; PUSHMARK (SP);	1545	ENTER; SAVETMPS;
		1546	SAVESTACK_POS ();
		1547	PUSHMARK (SP);
1333	XPUSHs (sv_2mortal (sv));	1548	XPUSHs (sv_2mortal (sv));
1334		1549
1335	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1550	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1336		1551
1337	if (count == 1)	1552	if (count == 1)
…		…
1353	DEC_DEC_DEPTH;	1568	DEC_DEC_DEPTH;
1354	return 0;	1569	return 0;
1355	}	1570	}
1356		1571
1357	static SV *	1572	static SV *
		1573	decode_tag (dec_t *dec)
		1574	{
		1575	SV *tag = 0;
		1576	SV *val = 0;
		1577
		1578	if (!(dec->json.flags & F_ALLOW_TAGS))
		1579	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1580
		1581	++dec->cur;
		1582
		1583	decode_ws (dec);
		1584
		1585	tag = decode_sv (dec);
		1586	if (!tag)
		1587	goto fail;
		1588
		1589	if (!SvPOK (tag))
		1590	ERR ("malformed JSON string, (tag) must be a string");
		1591
		1592	decode_ws (dec);
		1593
		1594	if (*dec->cur != ')')
		1595	ERR (") expected after tag");
		1596
		1597	++dec->cur;
		1598
		1599	decode_ws (dec);
		1600
		1601	val = decode_sv (dec);
		1602	if (!val)
		1603	goto fail;
		1604
		1605	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1606	ERR ("malformed JSON string, tag value must be an array");
		1607
		1608	{
		1609	AV av = (AV )SvRV (val);
		1610	int i, len = av_len (av) + 1;
		1611	HV *stash = gv_stashsv (tag, 0);
		1612	SV *sv;
		1613
		1614	if (!stash)
		1615	ERR ("cannot decode perl-object (package does not exist)");
		1616
		1617	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1618
		1619	if (!method)
		1620	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1621
		1622	dSP;
		1623
		1624	ENTER; SAVETMPS;
		1625	PUSHMARK (SP);
		1626	EXTEND (SP, len + 2);
		1627	// we re-bless the reference to get overload and other niceties right
		1628	PUSHs (tag);
		1629	PUSHs (sv_json);
		1630
		1631	for (i = 0; i < len; ++i)
		1632	PUSHs (*av_fetch (av, i, 1));
		1633
		1634	PUTBACK;
		1635	call_sv ((SV *)GvCV (method), G_SCALAR);
		1636	SPAGAIN;
		1637
		1638	SvREFCNT_dec (tag);
		1639	SvREFCNT_dec (val);
		1640	sv = SvREFCNT_inc (POPs);
		1641
		1642	PUTBACK;
		1643
		1644	FREETMPS; LEAVE;
		1645
		1646	return sv;
		1647	}
		1648
		1649	fail:
		1650	SvREFCNT_dec (tag);
		1651	SvREFCNT_dec (val);
		1652	return 0;
		1653	}
		1654
		1655	static SV *
1358	decode_sv (dec_t *dec)	1656	decode_sv (dec_t *dec)
1359	{	1657	{
1360	// the beauty of JSON: you need exactly one character lookahead	1658	// the beauty of JSON: you need exactly one character lookahead
1361	// to parse everything.	1659	// to parse everything.
1362	switch (*dec->cur)	1660	switch (*dec->cur)
1363	{	1661	{
1364	case '"': ++dec->cur; return decode_str (dec);	1662	case '"': ++dec->cur; return decode_str (dec);
1365	case '[': ++dec->cur; return decode_av (dec);	1663	case '[': ++dec->cur; return decode_av (dec);
1366	case '{': ++dec->cur; return decode_hv (dec);	1664	case '{': ++dec->cur; return decode_hv (dec);
		1665	case '(': return decode_tag (dec);
1367		1666
1368	case '-':	1667	case '-':
1369	case '0': case '1': case '2': case '3': case '4':	1668	case '0': case '1': case '2': case '3': case '4':
1370	case '5': case '6': case '7': case '8': case '9':	1669	case '5': case '6': case '7': case '8': case '9':
1371	return decode_num (dec);	1670	return decode_num (dec);
1372		1671
		1672	case 'f':
		1673	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
		1674	{
		1675	dec->cur += 5;
		1676
		1677	if (expect_false (!dec->json.v_false))
		1678	dec->json.v_false = GET_BOOL (false);
		1679
		1680	return newSVsv (dec->json.v_false);
		1681	}
		1682	else
		1683	ERR ("'false' expected");
		1684
		1685	break;
		1686
1373	case 't':	1687	case 't':
1374	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1688	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1375	{	1689	{
1376	dec->cur += 4;	1690	dec->cur += 4;
1377	#if JSON_SLOW	1691
1378	json_true = get_bool ("JSON::XS::true");	1692	if (expect_false (!dec->json.v_true))
1379	#endif	1693	dec->json.v_true = GET_BOOL (true);
		1694
1380	return newSVsv (json_true);	1695	return newSVsv (dec->json.v_true);
1381	}	1696	}
1382	else	1697	else
1383	ERR ("'true' expected");	1698	ERR ("'true' expected");
1384
1385	break;
1386
1387	case 'f':
1388	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1389	{
1390	dec->cur += 5;
1391	#if JSON_SLOW
1392	json_false = get_bool ("JSON::XS::false");
1393	#endif
1394	return newSVsv (json_false);
1395	}
1396	else
1397	ERR ("'false' expected");
1398		1699
1399	break;	1700	break;
1400		1701
1401	case 'n':	1702	case 'n':
1402	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	1703	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
…		…
1408	ERR ("'null' expected");	1709	ERR ("'null' expected");
1409		1710
1410	break;	1711	break;
1411		1712
1412	default:	1713	default:
1413	ERR ("malformed JSON string, neither array, object, number, string or atom");	1714	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1414	break;	1715	break;
1415	}	1716	}
1416		1717
1417	fail:	1718	fail:
1418	return 0;	1719	return 0;
1419	}	1720	}
1420		1721
1421	static SV *	1722	static SV *
1422	decode_json (SV string, JSON json, char **offset_return)	1723	decode_json (SV string, JSON json, STRLEN *offset_return)
1423	{	1724	{
1424	dec_t dec;	1725	dec_t dec;
1425	SV *sv;	1726	SV *sv;
1426		1727
1427	/* work around bugs in 5.10 where manipulating magic values	1728	/* work around bugs in 5.10 where manipulating magic values
1428	* will perl ignore the magic in subsequent accesses	1729	* makes perl ignore the magic in subsequent accesses.
		1730	* also make a copy of non-PV values, to get them into a clean
		1731	* state (SvPV should do that, but it's buggy, see below).
		1732	*
		1733	* SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
		1734	* as reported by Reini Urban.
1429	*/	1735	*/
1430	/SvGETMAGIC (string);/	1736	/SvGETMAGIC (string);/
1431	if (SvMAGICAL (string))	1737	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
1432	string = sv_2mortal (newSVsv (string));	1738	string = sv_2mortal (newSVsv (string));
1433		1739
1434	SvUPGRADE (string, SVt_PV);	1740	SvUPGRADE (string, SVt_PV);
1435		1741
1436	/* work around a bug in perl 5.10, which causes SvCUR to fail an	1742	/* work around a bug in perl 5.10, which causes SvCUR to fail an
…		…
1453	if (offset > json->max_size && json->max_size)	1759	if (offset > json->max_size && json->max_size)
1454	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1760	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1455	(unsigned long)SvCUR (string), (unsigned long)json->max_size);	1761	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
1456	}	1762	}
1457		1763
1458	if (json->flags & F_UTF8)	1764	if (DECODE_WANTS_OCTETS (json))
1459	sv_utf8_downgrade (string, 0);	1765	sv_utf8_downgrade (string, 0);
1460	else	1766	else
1461	sv_utf8_upgrade (string);	1767	sv_utf8_upgrade (string);
1462		1768
1463	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1769	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
…		…
1475		1781
1476	decode_ws (&dec);	1782	decode_ws (&dec);
1477	sv = decode_sv (&dec);	1783	sv = decode_sv (&dec);
1478		1784
1479	if (offset_return)	1785	if (offset_return)
1480	*offset_return = dec.cur;	1786	*offset_return = dec.cur - SvPVX (string);
1481		1787	else if (sv)
1482	if (!(offset_return \|\| !sv))
1483	{	1788	{
1484	// check for trailing garbage	1789	// check for trailing garbage
1485	decode_ws (&dec);	1790	decode_ws (&dec);
1486		1791
1487	if (*dec.cur)	1792	if (*dec.cur)
…		…
1505	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1810	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1506	LEAVE;	1811	LEAVE;
1507		1812
1508	croak ("%s, at character offset %d (before \"%s\")",	1813	croak ("%s, at character offset %d (before \"%s\")",
1509	dec.err,	1814	dec.err,
1510	ptr_to_index (string, dec.cur),	1815	(int)ptr_to_index (string, dec.cur),
1511	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1816	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1512	}	1817	}
1513		1818
1514	sv = sv_2mortal (sv);	1819	sv = sv_2mortal (sv);
1515		1820
1516	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1821	if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1517	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1822	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1518		1823
1519	return sv;	1824	return sv;
1520	}	1825	}
1521		1826
…		…
1524		1829
1525	static void	1830	static void
1526	incr_parse (JSON *self)	1831	incr_parse (JSON *self)
1527	{	1832	{
1528	const char *p = SvPVX (self->incr_text) + self->incr_pos;	1833	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1834
		1835	// the state machine here is a bit convoluted and could be simplified a lot
		1836	// but this would make it slower, so...
1529		1837
1530	for (;;)	1838	for (;;)
1531	{	1839	{
1532	//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	1840	//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
1533	switch (self->incr_mode)	1841	switch (self->incr_mode)
1534	{	1842	{
1535	// only used for intiial whitespace skipping	1843	// only used for initial whitespace skipping
1536	case INCR_M_WS:	1844	case INCR_M_WS:
1537	for (;;)	1845	for (;;)
1538	{	1846	{
1539	if (*p > 0x20)	1847	if (*p > 0x20)
1540	{	1848	{
		1849	if (*p == '#')
		1850	{
		1851	self->incr_mode = INCR_M_C0;
		1852	goto incr_m_c;
		1853	}
		1854	else
		1855	{
1541	self->incr_mode = INCR_M_JSON;	1856	self->incr_mode = INCR_M_JSON;
1542	goto incr_m_json;	1857	goto incr_m_json;
		1858	}
1543	}	1859	}
1544	else if (!*p)	1860	else if (!*p)
1545	goto interrupt;	1861	goto interrupt;
1546		1862
1547	++p;	1863	++p;
…		…
1553	goto interrupt;	1869	goto interrupt;
1554		1870
1555	++p;	1871	++p;
1556	self->incr_mode = INCR_M_STR;	1872	self->incr_mode = INCR_M_STR;
1557	goto incr_m_str;	1873	goto incr_m_str;
		1874
		1875	// inside #-style comments
		1876	case INCR_M_C0:
		1877	case INCR_M_C1:
		1878	incr_m_c:
		1879	for (;;)
		1880	{
		1881	if (*p == '\n')
		1882	{
		1883	self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON;
		1884	break;
		1885	}
		1886	else if (!*p)
		1887	goto interrupt;
		1888
		1889	++p;
		1890	}
		1891
		1892	break;
1558		1893
1559	// inside a string	1894	// inside a string
1560	case INCR_M_STR:	1895	case INCR_M_STR:
1561	incr_m_str:	1896	incr_m_str:
1562	for (;;)	1897	for (;;)
…		…
1613	self->incr_mode = INCR_M_STR;	1948	self->incr_mode = INCR_M_STR;
1614	goto incr_m_str;	1949	goto incr_m_str;
1615		1950
1616	case '[':	1951	case '[':
1617	case '{':	1952	case '{':
		1953	case '(':
1618	if (++self->incr_nest > self->max_depth)	1954	if (++self->incr_nest > self->max_depth)
1619	croak (ERR_NESTING_EXCEEDED);	1955	croak (ERR_NESTING_EXCEEDED);
1620	break;	1956	break;
1621		1957
1622	case ']':	1958	case ']':
1623	case '}':	1959	case '}':
1624	if (--self->incr_nest <= 0)	1960	if (--self->incr_nest <= 0)
1625	goto interrupt;	1961	goto interrupt;
		1962	break;
		1963
		1964	case ')':
		1965	--self->incr_nest;
		1966	break;
		1967
		1968	case '#':
		1969	self->incr_mode = INCR_M_C1;
		1970	goto incr_m_c;
1626	}	1971	}
1627	}	1972	}
1628	}	1973	}
1629		1974
1630	modechange:	1975	modechange:
1631	;	1976	;
1632	}	1977	}
1633		1978
1634	interrupt:	1979	interrupt:
1635	self->incr_pos = p - SvPVX (self->incr_text);	1980	self->incr_pos = p - SvPVX (self->incr_text);
		1981	//printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D
1636	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D	1982	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
1637	}	1983	}
1638		1984
1639	/////////////////////////////////////////////////////////////////////////////	1985	/////////////////////////////////////////////////////////////////////////////
1640	// XS interface functions	1986	// XS interface functions
…		…
1650	i >= '0' && i <= '9' ? i - '0'	1996	i >= '0' && i <= '9' ? i - '0'
1651	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1997	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1652	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1998	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1653	: -1;	1999	: -1;
1654		2000
1655	json_stash = gv_stashpv ("JSON::XS" , 1);	2001	json_stash = gv_stashpv ("JSON::XS" , 1);
1656	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	2002	bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1657
1658	json_true = get_bool ("JSON::XS::true");
1659	json_false = get_bool ("JSON::XS::false");	2003	bool_false = get_bool ("Types::Serialiser::false");
		2004	bool_true = get_bool ("Types::Serialiser::true");
		2005
		2006	sv_json = newSVpv ("JSON", 0);
		2007	SvREADONLY_on (sv_json);
		2008
		2009	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1660	}	2010	}
1661		2011
1662	PROTOTYPES: DISABLE	2012	PROTOTYPES: DISABLE
1663		2013
1664	void CLONE (...)	2014	void CLONE (...)
1665	CODE:	2015	CODE:
		2016	// as long as these writes are atomic, the race should not matter
		2017	// as existing threads either already use 0, or use the old value,
		2018	// which is sitll correct for the initial thread.
1666	json_stash = 0;	2019	json_stash = 0;
1667	json_boolean_stash = 0;	2020	bool_stash = 0;
		2021	bool_false = 0;
		2022	bool_true = 0;
1668		2023
1669	void new (char *klass)	2024	void new (char *klass)
1670	PPCODE:	2025	PPCODE:
1671	{	2026	{
1672	SV *pv = NEWSV (0, sizeof (JSON));	2027	SV *pv = NEWSV (0, sizeof (JSON));
1673	SvPOK_only (pv);	2028	SvPOK_only (pv);
1674	json_init ((JSON *)SvPVX (pv));	2029	json_init ((JSON *)SvPVX (pv));
1675	XPUSHs (sv_2mortal (sv_bless (	2030	XPUSHs (sv_2mortal (sv_bless (
1676	newRV_noinc (pv),	2031	newRV_noinc (pv),
1677	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	2032	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1678	)));	2033	)));
1679	}	2034	}
		2035
		2036	void boolean_values (JSON self, SV v_false = 0, SV *v_true = 0)
		2037	PPCODE:
		2038	self->v_false = newSVsv (v_false);
		2039	self->v_true = newSVsv (v_true);
		2040	XPUSHs (ST (0));
		2041
		2042	void get_boolean_values (JSON *self)
		2043	PPCODE:
		2044	if (self->v_false && self->v_true)
		2045	{
		2046	EXTEND (SP, 2);
		2047	PUSHs (self->v_false);
		2048	PUSHs (self->v_true);
		2049	}
1680		2050
1681	void ascii (JSON *self, int enable = 1)	2051	void ascii (JSON *self, int enable = 1)
1682	ALIAS:	2052	ALIAS:
1683	ascii = F_ASCII	2053	ascii = F_ASCII
1684	latin1 = F_LATIN1	2054	latin1 = F_LATIN1
…		…
1692	shrink = F_SHRINK	2062	shrink = F_SHRINK
1693	allow_blessed = F_ALLOW_BLESSED	2063	allow_blessed = F_ALLOW_BLESSED
1694	convert_blessed = F_CONV_BLESSED	2064	convert_blessed = F_CONV_BLESSED
1695	relaxed = F_RELAXED	2065	relaxed = F_RELAXED
1696	allow_unknown = F_ALLOW_UNKNOWN	2066	allow_unknown = F_ALLOW_UNKNOWN
		2067	allow_tags = F_ALLOW_TAGS
1697	PPCODE:	2068	PPCODE:
1698	{	2069	{
1699	if (enable)	2070	if (enable)
1700	self->flags \|= ix;	2071	self->flags \|= ix;
1701	else	2072	else
…		…
1717	get_shrink = F_SHRINK	2088	get_shrink = F_SHRINK
1718	get_allow_blessed = F_ALLOW_BLESSED	2089	get_allow_blessed = F_ALLOW_BLESSED
1719	get_convert_blessed = F_CONV_BLESSED	2090	get_convert_blessed = F_CONV_BLESSED
1720	get_relaxed = F_RELAXED	2091	get_relaxed = F_RELAXED
1721	get_allow_unknown = F_ALLOW_UNKNOWN	2092	get_allow_unknown = F_ALLOW_UNKNOWN
		2093	get_allow_tags = F_ALLOW_TAGS
1722	PPCODE:	2094	PPCODE:
1723	XPUSHs (boolSV (self->flags & ix));	2095	XPUSHs (boolSV (self->flags & ix));
1724		2096
1725	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)	2097	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1726	PPCODE:	2098	PPCODE:
…		…
1754	}	2126	}
1755		2127
1756	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2128	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1757	PPCODE:	2129	PPCODE:
1758	{	2130	{
1759	if (!self->cb_sk_object)	2131	if (!self->cb_sk_object)
1760	self->cb_sk_object = newHV ();	2132	self->cb_sk_object = newHV ();
1761		2133
1762	if (SvOK (cb))	2134	if (SvOK (cb))
1763	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2135	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1764	else	2136	else
…		…
1775	XPUSHs (ST (0));	2147	XPUSHs (ST (0));
1776	}	2148	}
1777		2149
1778	void encode (JSON self, SV scalar)	2150	void encode (JSON self, SV scalar)
1779	PPCODE:	2151	PPCODE:
1780	XPUSHs (encode_json (scalar, self));	2152	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2153	XPUSHs (scalar);
1781		2154
1782	void decode (JSON self, SV jsonstr)	2155	void decode (JSON self, SV jsonstr)
1783	PPCODE:	2156	PPCODE:
1784	XPUSHs (decode_json (jsonstr, self, 0));	2157	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2158	XPUSHs (jsonstr);
1785		2159
1786	void decode_prefix (JSON self, SV jsonstr)	2160	void decode_prefix (JSON self, SV jsonstr)
1787	PPCODE:	2161	PPCODE:
1788	{	2162	{
1789	char *offset;	2163	SV *sv;
		2164	STRLEN offset;
		2165	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1790	EXTEND (SP, 2);	2166	EXTEND (SP, 2);
1791	PUSHs (decode_json (jsonstr, self, &offset));	2167	PUSHs (sv);
1792	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));	2168	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
1793	}	2169	}
1794		2170
1795	void incr_parse (JSON self, SV jsonstr = 0)	2171	void incr_parse (JSON self, SV jsonstr = 0)
1796	PPCODE:	2172	PPCODE:
1797	{	2173	{
1798	if (!self->incr_text)	2174	if (!self->incr_text)
1799	self->incr_text = newSVpvn ("", 0);	2175	self->incr_text = newSVpvn ("", 0);
		2176
		2177	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2178	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2179	if (DECODE_WANTS_OCTETS (self))
		2180	{
		2181	if (self->incr_pos)
		2182	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2183	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2184
		2185	sv_utf8_downgrade (self->incr_text, 0);
		2186	}
		2187	else
		2188	{
		2189	sv_utf8_upgrade (self->incr_text);
		2190
		2191	if (self->incr_pos)
		2192	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2193	- (U8 *)SvPVX (self->incr_text);
		2194	}
1800		2195
1801	// append data, if any	2196	// append data, if any
1802	if (jsonstr)	2197	if (jsonstr)
1803	{	2198	{
		2199	/* make sure both strings have same encoding */
		2200	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
1804	if (SvUTF8 (jsonstr))	2201	if (SvUTF8 (jsonstr))
		2202	sv_utf8_downgrade (jsonstr, 0);
1805	{	2203	else
1806	if (!SvUTF8 (self->incr_text))
1807	{
1808	/* utf-8-ness differs, need to upgrade */
1809	sv_utf8_upgrade (self->incr_text);
1810
1811	if (self->incr_pos)
1812	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
1813	- (U8 *)SvPVX (self->incr_text);
1814	}
1815	}
1816	else if (SvUTF8 (self->incr_text))
1817	sv_utf8_upgrade (jsonstr);	2204	sv_utf8_upgrade (jsonstr);
1818		2205
		2206	/* and then just blindly append */
1819	{	2207	{
1820	STRLEN len;	2208	STRLEN len;
1821	const char *str = SvPV (jsonstr, len);	2209	const char *str = SvPV (jsonstr, len);
1822	STRLEN cur = SvCUR (self->incr_text);	2210	STRLEN cur = SvCUR (self->incr_text);
1823		2211
1824	if (SvLEN (self->incr_text) <= cur + len)	2212	if (SvLEN (self->incr_text) - cur <= len)
1825	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	2213	json_sv_grow (self->incr_text, cur, len);
1826		2214
1827	Move (str, SvEND (self->incr_text), len, char);	2215	Move (str, SvEND (self->incr_text), len, char);
1828	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);	2216	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
1829	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there	2217	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1830	}	2218	}
1831	}	2219	}
1832		2220
1833	if (GIMME_V != G_VOID)	2221	if (GIMME_V != G_VOID)
1834	do	2222	do
1835	{	2223	{
		2224	SV *sv;
1836	char *offset;	2225	STRLEN offset;
1837		2226
1838	if (!INCR_DONE (self))	2227	if (!INCR_DONE (self))
1839	{	2228	{
1840	incr_parse (self);	2229	incr_parse (self);
1841		2230
1842	if (self->incr_pos > self->max_size && self->max_size)	2231	if (self->incr_pos > self->max_size && self->max_size)
1843	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	2232	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1844	(unsigned long)self->incr_pos, (unsigned long)self->max_size);	2233	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
1845		2234
1846	if (!INCR_DONE (self))	2235	if (!INCR_DONE (self))
		2236	{
		2237	// as an optimisation, do not accumulate white space in the incr buffer
		2238	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2239	{
		2240	self->incr_pos = 0;
		2241	SvCUR_set (self->incr_text, 0);
		2242	}
		2243
1847	break;	2244	break;
		2245	}
1848	}	2246	}
1849		2247
1850	XPUSHs (decode_json (self->incr_text, self, &offset));	2248	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2249	XPUSHs (sv);
1851		2250
1852	self->incr_pos -= offset - SvPVX (self->incr_text);	2251	self->incr_pos -= offset;
1853	self->incr_nest = 0;	2252	self->incr_nest = 0;
1854	self->incr_mode = 0;	2253	self->incr_mode = 0;
1855		2254
1856	sv_chop (self->incr_text, offset);	2255	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
1857	}	2256	}
1858	while (GIMME_V == G_ARRAY);	2257	while (GIMME_V == G_ARRAY);
1859	}	2258	}
1860		2259
1861	SV incr_text (JSON self)	2260	SV incr_text (JSON self)
…		…
1892	self->incr_mode = 0;	2291	self->incr_mode = 0;
1893	}	2292	}
1894		2293
1895	void DESTROY (JSON *self)	2294	void DESTROY (JSON *self)
1896	CODE:	2295	CODE:
		2296	SvREFCNT_dec (self->v_false);
		2297	SvREFCNT_dec (self->v_true);
1897	SvREFCNT_dec (self->cb_sk_object);	2298	SvREFCNT_dec (self->cb_sk_object);
1898	SvREFCNT_dec (self->cb_object);	2299	SvREFCNT_dec (self->cb_object);
1899	SvREFCNT_dec (self->incr_text);	2300	SvREFCNT_dec (self->incr_text);
1900		2301
1901	PROTOTYPES: ENABLE	2302	PROTOTYPES: ENABLE
1902		2303
1903	void encode_json (SV *scalar)	2304	void encode_json (SV *scalar)
1904	ALIAS:
1905	to_json_ = 0
1906	encode_json = F_UTF8
1907	PPCODE:	2305	PPCODE:
1908	{	2306	{
1909	JSON json;	2307	JSON json;
1910	json_init (&json);	2308	json_init (&json);
1911	json.flags \|= ix;	2309	json.flags \|= F_UTF8;
1912	XPUSHs (encode_json (scalar, &json));	2310	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2311	XPUSHs (scalar);
1913	}	2312	}
1914		2313
1915	void decode_json (SV *jsonstr)	2314	void decode_json (SV *jsonstr)
1916	ALIAS:
1917	from_json_ = 0
1918	decode_json = F_UTF8
1919	PPCODE:	2315	PPCODE:
1920	{	2316	{
1921	JSON json;	2317	JSON json;
1922	json_init (&json);	2318	json_init (&json);
1923	json.flags \|= ix;	2319	json.flags \|= F_UTF8;
1924	XPUSHs (decode_json (jsonstr, &json, 0));	2320	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2321	XPUSHs (jsonstr);
1925	}	2322	}
1926		2323
1927

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Comparing JSON-XS/XS.xs (file contents): Revision 1.98 by root, Fri Jul 17 14:33:45 2009 UTC vs. Revision 1.133 by root, Tue Aug 28 16:16:17 2018 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.98 by root, Fri Jul 17 14:33:45 2009 UTC vs.
Revision 1.133 by root, Tue Aug 28 16:16:17 2018 UTC