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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.76 by root, Thu Mar 20 00:56:37 2008 UTC vs.
Revision 1.131 by root, Thu Aug 17 01:42:20 2017 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
…		…
31	#define F_ALLOW_NONREF 0x00000100UL	44	#define F_ALLOW_NONREF 0x00000100UL
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		49	#define F_ALLOW_UNKNOWN 0x00002000UL
37	#define F_MAXDEPTH 0xf8000000UL	50	#define F_ALLOW_TAGS 0x00004000UL
38	#define S_MAXDEPTH 27
39	#define F_MAXSIZE 0x01f00000UL
40	#define S_MAXSIZE 20
41	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing	51	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
42		52
43	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
44	#define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE ))
45
46	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	53	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
47	#define F_DEFAULT (9UL << S_MAXDEPTH)
48		54
49	#define INIT_SIZE 32 // initial scalar size to be allocated	55	#define INIT_SIZE 32 // initial scalar size to be allocated
50	#define INDENT_STEP 3 // spaces per indentation level	56	#define INDENT_STEP 3 // spaces per indentation level
51		57
52	#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)
53		61
54	#define SB do {	62	#define SB do {
55	#define SE } while (0)	63	#define SE } while (0)
56		64
57	#if __GNUC__ >= 3	65	#if __GNUC__ >= 3
…		…
67		75
68	#define IN_RANGE_INC(type,val,beg,end) \	76	#define IN_RANGE_INC(type,val,beg,end) \
69	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	77	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
70	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	78	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
71		79
		80	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"
		81
72	#ifdef USE_ITHREADS	82	#ifdef USE_ITHREADS
73	# define JSON_SLOW 1	83	# define JSON_SLOW 1
74	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))	84	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))
		85	# define BOOL_STASH (bool_stash ? bool_stash : gv_stashpv ("Types::Serialiser::Boolean", 1))
75	#else	86	#else
76	# define JSON_SLOW 0	87	# define JSON_SLOW 0
77	# define JSON_STASH json_stash	88	# define JSON_STASH json_stash
		89	# define BOOL_STASH bool_stash
78	#endif	90	#endif
79		91
80	static HV json_stash, json_boolean_stash; // JSON::XS::	92	// the amount of HEs to allocate on the stack, when sorting keys
81	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_true, bool_false, *sv_json;
		97
		98	enum {
		99	INCR_M_WS = 0, // initial whitespace skipping, must be 0
		100	INCR_M_STR, // inside string
		101	INCR_M_BS, // inside backslash
		102	INCR_M_C0, // inside comment in initial whitespace sequence
		103	INCR_M_C1, // inside comment in other places
		104	INCR_M_JSON // outside anything, count nesting
		105	};
		106
		107	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)
82		108
83	typedef struct {	109	typedef struct {
84	U32 flags;	110	U32 flags;
		111	U32 max_depth;
		112	STRLEN max_size;
		113
85	SV *cb_object;	114	SV *cb_object;
86	HV *cb_sk_object;	115	HV *cb_sk_object;
		116
		117	// for the incremental parser
		118	SV *incr_text; // the source text so far
		119	STRLEN incr_pos; // the current offset into the text
		120	int incr_nest; // {[]}-nesting level
		121	unsigned char incr_mode;
87	} JSON;	122	} JSON;
		123
		124	INLINE void
		125	json_init (JSON *json)
		126	{
		127	Zero (json, 1, JSON);
		128	json->max_depth = 512;
		129	}
88		130
89	/////////////////////////////////////////////////////////////////////////////	131	/////////////////////////////////////////////////////////////////////////////
90	// utility functions	132	// utility functions
91		133
		134	INLINE SV *
		135	get_bool (const char *name)
		136	{
		137	SV *sv = get_sv (name, 1);
		138
		139	SvREADONLY_on (sv);
		140	SvREADONLY_on (SvRV (sv));
		141
		142	return sv;
		143	}
		144
92	INLINE void	145	INLINE void
93	shrink (SV *sv)	146	shrink (SV *sv)
94	{	147	{
95	sv_utf8_downgrade (sv, 1);	148	sv_utf8_downgrade (sv, 1);
		149
96	if (SvLEN (sv) > SvCUR (sv) + 1)	150	if (SvLEN (sv) > SvCUR (sv) + 1)
97	{	151	{
98	#ifdef SvPV_shrink_to_cur	152	#ifdef SvPV_shrink_to_cur
99	SvPV_shrink_to_cur (sv);	153	SvPV_shrink_to_cur (sv);
100	#elif defined (SvPV_renew)	154	#elif defined (SvPV_renew)
101	SvPV_renew (sv, SvCUR (sv) + 1);	155	SvPV_renew (sv, SvCUR (sv) + 1);
102	#endif	156	#endif
103	}	157	}
		158	}
		159
		160	/* adds two STRLENs together, slow, and with paranoia */
		161	STRLEN
		162	strlen_sum (STRLEN l1, STRLEN l2)
		163	{
		164	size_t sum = l1 + l2;
		165
		166	if (sum < (size_t)l2 \|\| sum != (size_t)(STRLEN)sum)
		167	croak ("JSON::XS: string size overflow");
		168
		169	return sum;
		170	}
		171
		172	/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */
		173	static char *
		174	json_sv_grow (SV *sv, size_t len1, size_t len2)
		175	{
		176	len1 = strlen_sum (len1, len2);
		177	len1 = strlen_sum (len1, len1 >> 1);
		178
		179	if (len1 > 4096 - 24)
		180	len1 = (len1 \| 4095) - 24;
		181
		182	return SvGROW (sv, len1);
104	}	183	}
105		184
106	// decode an utf-8 character and return it, or (UV)-1 in	185	// decode an utf-8 character and return it, or (UV)-1 in
107	// case of an error.	186	// case of an error.
108	// we special-case "safe" characters from U+80 .. U+7FF,	187	// we special-case "safe" characters from U+80 .. U+7FF,
…		…
144	*s++ = 0x80 \| ( ch & 0x3f);	223	*s++ = 0x80 \| ( ch & 0x3f);
145		224
146	return s;	225	return s;
147	}	226	}
148		227
		228	// convert offset pointer to character index, sv must be string
		229	static STRLEN
		230	ptr_to_index (SV sv, char offset)
		231	{
		232	return SvUTF8 (sv)
		233	? utf8_distance (offset, SvPVX (sv))
		234	: offset - SvPVX (sv);
		235	}
		236
		237	/////////////////////////////////////////////////////////////////////////////
		238	// fp hell
		239
		240	// scan a group of digits, and a trailing exponent
		241	static void
		242	json_atof_scan1 (const char s, NV accum, int *expo, int postdp, int maxdepth)
		243	{
		244	UV uaccum = 0;
		245	int eaccum = 0;
		246
		247	// if we recurse too deep, skip all remaining digits
		248	// to avoid a stack overflow attack
		249	if (expect_false (--maxdepth <= 0))
		250	while (((U8)*s - '0') < 10)
		251	++s;
		252
		253	for (;;)
		254	{
		255	U8 dig = (U8)*s - '0';
		256
		257	if (expect_false (dig >= 10))
		258	{
		259	if (dig == (U8)((U8)'.' - (U8)'0'))
		260	{
		261	++s;
		262	json_atof_scan1 (s, accum, expo, 1, maxdepth);
		263	}
		264	else if ((dig \| ' ') == 'e' - '0')
		265	{
		266	int exp2 = 0;
		267	int neg = 0;
		268
		269	++s;
		270
		271	if (*s == '-')
		272	{
		273	++s;
		274	neg = 1;
		275	}
		276	else if (*s == '+')
		277	++s;
		278
		279	while ((dig = (U8)*s - '0') < 10)
		280	exp2 = exp2 * 10 + *s++ - '0';
		281
		282	*expo += neg ? -exp2 : exp2;
		283	}
		284
		285	break;
		286	}
		287
		288	++s;
		289
		290	uaccum = uaccum * 10 + dig;
		291	++eaccum;
		292
		293	// if we have too many digits, then recurse for more
		294	// we actually do this for rather few digits
		295	if (uaccum >= (UV_MAX - 9) / 10)
		296	{
		297	if (postdp) *expo -= eaccum;
		298	json_atof_scan1 (s, accum, expo, postdp, maxdepth);
		299	if (postdp) *expo += eaccum;
		300
		301	break;
		302	}
		303	}
		304
		305	// this relies greatly on the quality of the pow ()
		306	// implementation of the platform, but a good
		307	// implementation is hard to beat.
		308	// (IEEE 754 conformant ones are required to be exact)
		309	if (postdp) *expo -= eaccum;
		310	accum += uaccum Perl_pow (10., *expo);
		311	*expo += eaccum;
		312	}
		313
		314	static NV
		315	json_atof (const char *s)
		316	{
		317	NV accum = 0.;
		318	int expo = 0;
		319	int neg = 0;
		320
		321	if (*s == '-')
		322	{
		323	++s;
		324	neg = 1;
		325	}
		326
		327	// a recursion depth of ten gives us >>500 bits
		328	json_atof_scan1 (s, &accum, &expo, 0, 10);
		329
		330	return neg ? -accum : accum;
		331	}
		332
		333	// target of scalar reference is bool? -1 == nope, 0 == false, 1 == true
		334	static int
		335	ref_bool_type (SV *sv)
		336	{
		337	svtype svt = SvTYPE (sv);
		338
		339	if (svt < SVt_PVAV)
		340	{
		341	STRLEN len = 0;
		342	char *pv = svt ? SvPV (sv, len) : 0;
		343
		344	if (len == 1)
		345	if (*pv == '1')
		346	return 1;
		347	else if (*pv == '0')
		348	return 0;
		349	}
		350
		351	return -1;
		352	}
		353
		354	// returns whether scalar is not a reference in the sense of allow_nonref
		355	static int
		356	json_nonref (SV *scalar)
		357	{
		358	if (!SvROK (scalar))
		359	return 1;
		360
		361	scalar = SvRV (scalar);
		362
		363	if (SvTYPE (scalar) >= SVt_PVMG)
		364	{
		365	if (SvSTASH (scalar) == bool_stash)
		366	return 1;
		367
		368	if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0)
		369	return 1;
		370	}
		371
		372	return 0;
		373	}
		374
149	/////////////////////////////////////////////////////////////////////////////	375	/////////////////////////////////////////////////////////////////////////////
150	// encoder	376	// encoder
151		377
152	// structure used for encoding JSON	378	// structure used for encoding JSON
153	typedef struct	379	typedef struct
…		…
155	char *cur; // SvPVX (sv) + current output position	381	char *cur; // SvPVX (sv) + current output position
156	char *end; // SvEND (sv)	382	char *end; // SvEND (sv)
157	SV *sv; // result scalar	383	SV *sv; // result scalar
158	JSON json;	384	JSON json;
159	U32 indent; // indentation level	385	U32 indent; // indentation level
160	U32 maxdepth; // max. indentation/recursion level
161	UV limit; // escape character values >= this value when encoding	386	UV limit; // escape character values >= this value when encoding
162	} enc_t;	387	} enc_t;
163		388
164	INLINE void	389	INLINE void
165	need (enc_t *enc, STRLEN len)	390	need (enc_t *enc, STRLEN len)
166	{	391	{
167	if (expect_false (enc->cur + len >= enc->end))	392	if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
168	{	393	{
169	STRLEN cur = enc->cur - SvPVX (enc->sv);	394	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
170	SvGROW (enc->sv, cur + len + 1);	395	char *buf = json_sv_grow (enc->sv, cur, len);
171	enc->cur = SvPVX (enc->sv) + cur;	396	enc->cur = buf + cur;
172	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	397	enc->end = buf + SvLEN (enc->sv) - 1;
173	}	398	}
174	}	399	}
175		400
176	INLINE void	401	INLINE void
177	encode_ch (enc_t *enc, char ch)	402	encode_ch (enc_t *enc, char ch)
…		…
193		418
194	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case	419	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
195	{	420	{
196	if (expect_false (ch == '"')) // but with slow exceptions	421	if (expect_false (ch == '"')) // but with slow exceptions
197	{	422	{
198	need (enc, len += 1);	423	need (enc, len + 1);
199	*enc->cur++ = '\\';	424	*enc->cur++ = '\\';
200	*enc->cur++ = '"';	425	*enc->cur++ = '"';
201	}	426	}
202	else if (expect_false (ch == '\\'))	427	else if (expect_false (ch == '\\'))
203	{	428	{
204	need (enc, len += 1);	429	need (enc, len + 1);
205	*enc->cur++ = '\\';	430	*enc->cur++ = '\\';
206	*enc->cur++ = '\\';	431	*enc->cur++ = '\\';
207	}	432	}
208	else	433	else
209	*enc->cur++ = ch;	434	*enc->cur++ = ch;
…		…
212	}	437	}
213	else	438	else
214	{	439	{
215	switch (ch)	440	switch (ch)
216	{	441	{
217	case '\010': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;	442	case '\010': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;
218	case '\011': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 't'; ++str; break;	443	case '\011': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 't'; ++str; break;
219	case '\012': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;	444	case '\012': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;
220	case '\014': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;	445	case '\014': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;
221	case '\015': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;	446	case '\015': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;
222		447
223	default:	448	default:
224	{	449	{
225	STRLEN clen;	450	STRLEN clen;
226	UV uch;	451	UV uch;
…		…
242	if (uch >= 0x10000UL)	467	if (uch >= 0x10000UL)
243	{	468	{
244	if (uch >= 0x110000UL)	469	if (uch >= 0x110000UL)
245	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);	470	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
246		471
247	need (enc, len += 11);	472	need (enc, len + 11);
248	sprintf (enc->cur, "\\u%04x\\u%04x",	473	sprintf (enc->cur, "\\u%04x\\u%04x",
249	(int)((uch - 0x10000) / 0x400 + 0xD800),	474	(int)((uch - 0x10000) / 0x400 + 0xD800),
250	(int)((uch - 0x10000) % 0x400 + 0xDC00));	475	(int)((uch - 0x10000) % 0x400 + 0xDC00));
251	enc->cur += 12;	476	enc->cur += 12;
252	}	477	}
253	else	478	else
254	{	479	{
255	static char hexdigit [16] = "0123456789abcdef";
256	need (enc, len += 5);	480	need (enc, len + 5);
257	*enc->cur++ = '\\';	481	*enc->cur++ = '\\';
258	*enc->cur++ = 'u';	482	*enc->cur++ = 'u';
259	*enc->cur++ = hexdigit [ uch >> 12 ];	483	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
260	*enc->cur++ = hexdigit [(uch >> 8) & 15];	484	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
261	*enc->cur++ = hexdigit [(uch >> 4) & 15];	485	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
262	*enc->cur++ = hexdigit [(uch >> 0) & 15];	486	*enc->cur++ = PL_hexdigit [(uch >> 0) & 15];
263	}	487	}
264		488
265	str += clen;	489	str += clen;
266	}	490	}
267	else if (enc->json.flags & F_LATIN1)	491	else if (enc->json.flags & F_LATIN1)
…		…
269	*enc->cur++ = uch;	493	*enc->cur++ = uch;
270	str += clen;	494	str += clen;
271	}	495	}
272	else if (is_utf8)	496	else if (is_utf8)
273	{	497	{
274	need (enc, len += clen);	498	need (enc, len + clen);
275	do	499	do
276	{	500	{
277	enc->cur++ = str++;	501	enc->cur++ = str++;
278	}	502	}
279	while (--clen);	503	while (--clen);
280	}	504	}
281	else	505	else
282	{	506	{
283	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed	507	need (enc, len + UTF8_MAXBYTES - 1); // never more than 11 bytes needed
284	enc->cur = encode_utf8 (enc->cur, uch);	508	enc->cur = encode_utf8 (enc->cur, uch);
285	++str;	509	++str;
286	}	510	}
287	}	511	}
288	}	512	}
…		…
338	static void	562	static void
339	encode_av (enc_t enc, AV av)	563	encode_av (enc_t enc, AV av)
340	{	564	{
341	int i, len = av_len (av);	565	int i, len = av_len (av);
342		566
343	if (enc->indent >= enc->maxdepth)	567	if (enc->indent >= enc->json.max_depth)
344	croak ("data structure too deep (hit recursion limit)");	568	croak (ERR_NESTING_EXCEEDED);
345		569
346	encode_ch (enc, '[');	570	encode_ch (enc, '[');
347		571
348	if (len >= 0)	572	if (len >= 0)
349	{	573	{
350	encode_nl (enc); ++enc->indent;	574	encode_nl (enc); ++enc->indent;
351		575
352	for (i = 0; i <= len; ++i)	576	for (i = 0; i <= len; ++i)
…		…
364	encode_comma (enc);	588	encode_comma (enc);
365	}	589	}
366		590
367	encode_nl (enc); --enc->indent; encode_indent (enc);	591	encode_nl (enc); --enc->indent; encode_indent (enc);
368	}	592	}
369		593
370	encode_ch (enc, ']');	594	encode_ch (enc, ']');
371	}	595	}
372		596
373	static void	597	static void
374	encode_hk (enc_t enc, HE he)	598	encode_hk (enc_t enc, HE he)
…		…
378	if (HeKLEN (he) == HEf_SVKEY)	602	if (HeKLEN (he) == HEf_SVKEY)
379	{	603	{
380	SV *sv = HeSVKEY (he);	604	SV *sv = HeSVKEY (he);
381	STRLEN len;	605	STRLEN len;
382	char *str;	606	char *str;
383		607
384	SvGETMAGIC (sv);	608	SvGETMAGIC (sv);
385	str = SvPV (sv, len);	609	str = SvPV (sv, len);
386		610
387	encode_str (enc, str, len, SvUTF8 (sv));	611	encode_str (enc, str, len, SvUTF8 (sv));
388	}	612	}
…		…
423		647
424	static void	648	static void
425	encode_hv (enc_t enc, HV hv)	649	encode_hv (enc_t enc, HV hv)
426	{	650	{
427	HE *he;	651	HE *he;
428	int count;
429		652
430	if (enc->indent >= enc->maxdepth)	653	if (enc->indent >= enc->json.max_depth)
431	croak ("data structure too deep (hit recursion limit)");	654	croak (ERR_NESTING_EXCEEDED);
432		655
433	encode_ch (enc, '{');	656	encode_ch (enc, '{');
434		657
435	// for canonical output we have to sort by keys first	658	// for canonical output we have to sort by keys first
436	// actually, this is mostly due to the stupid so-called	659	// actually, this is mostly due to the stupid so-called
437	// security workaround added somewhere in 5.8.x.	660	// security workaround added somewhere in 5.8.x
438	// that randomises hash orderings	661	// that randomises hash orderings
439	if (enc->json.flags & F_CANONICAL)	662	if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv))
440	{	663	{
441	int count = hv_iterinit (hv);	664	int count = hv_iterinit (hv);
442		665
443	if (SvMAGICAL (hv))	666	if (SvMAGICAL (hv))
444	{	667	{
…		…
455	}	678	}
456		679
457	if (count)	680	if (count)
458	{	681	{
459	int i, fast = 1;	682	int i, fast = 1;
460	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	683	HE *hes_stack [STACK_HES];
461	HE *hes = _alloca (count sizeof (HE));	684	HE **hes = hes_stack;
462	#else	685
463	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	686	// allocate larger arrays on the heap
464	#endif	687	if (count > STACK_HES)
		688	{
		689	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		690	hes = (HE **)SvPVX (sv);
		691	}
465		692
466	i = 0;	693	i = 0;
467	while ((he = hv_iternext (hv)))	694	while ((he = hv_iternext (hv)))
468	{	695	{
469	hes [i++] = he;	696	hes [i++] = he;
…		…
538	// encode objects, arrays and special \0=false and \1=true values.	765	// encode objects, arrays and special \0=false and \1=true values.
539	static void	766	static void
540	encode_rv (enc_t enc, SV sv)	767	encode_rv (enc_t enc, SV sv)
541	{	768	{
542	svtype svt;	769	svtype svt;
		770	GV *method;
543		771
544	SvGETMAGIC (sv);	772	SvGETMAGIC (sv);
545	svt = SvTYPE (sv);	773	svt = SvTYPE (sv);
546		774
547	if (expect_false (SvOBJECT (sv)))	775	if (expect_false (SvOBJECT (sv)))
548	{	776	{
549	HV *stash = !JSON_SLOW \|\| json_boolean_stash	777	HV *stash = SvSTASH (sv);
550	? json_boolean_stash
551	: gv_stashpv ("JSON::XS::Boolean", 1);
552		778
553	if (SvSTASH (sv) == stash)	779	if (stash == bool_stash)
554	{	780	{
555	if (SvIV (sv))	781	if (SvIV (sv))
556	encode_str (enc, "true", 4, 0);	782	encode_str (enc, "true", 4, 0);
557	else	783	else
558	encode_str (enc, "false", 5, 0);	784	encode_str (enc, "false", 5, 0);
559	}	785	}
		786	else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
		787	{
		788	int count;
		789	dSP;
		790
		791	ENTER; SAVETMPS;
		792	SAVESTACK_POS ();
		793	PUSHMARK (SP);
		794	EXTEND (SP, 2);
		795	// we re-bless the reference to get overload and other niceties right
		796	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		797	PUSHs (sv_json);
		798
		799	PUTBACK;
		800	count = call_sv ((SV *)GvCV (method), G_ARRAY);
		801	SPAGAIN;
		802
		803	// catch this surprisingly common error
		804	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		805	croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		806
		807	encode_ch (enc, '(');
		808	encode_ch (enc, '"');
		809	encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
		810	encode_ch (enc, '"');
		811	encode_ch (enc, ')');
		812	encode_ch (enc, '[');
		813
		814	while (count)
		815	{
		816	encode_sv (enc, SP[1 - count--]);
		817
		818	if (count)
		819	encode_ch (enc, ',');
		820	}
		821
		822	encode_ch (enc, ']');
		823
		824	FREETMPS; LEAVE;
		825	}
		826	else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
		827	{
		828	dSP;
		829
		830	ENTER; SAVETMPS;
		831	PUSHMARK (SP);
		832	// we re-bless the reference to get overload and other niceties right
		833	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		834
		835	// calling with G_SCALAR ensures that we always get a 1 return value
		836	PUTBACK;
		837	call_sv ((SV *)GvCV (method), G_SCALAR);
		838	SPAGAIN;
		839
		840	// catch this surprisingly common error
		841	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		842	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		843
		844	sv = POPs;
		845	PUTBACK;
		846
		847	encode_sv (enc, sv);
		848
		849	FREETMPS; LEAVE;
		850	}
		851	else if (enc->json.flags & F_ALLOW_BLESSED)
		852	encode_str (enc, "null", 4, 0);
560	else	853	else
561	{
562	#if 0
563	if (0 && sv_derived_from (rv, "JSON::Literal"))
564	{
565	// not yet
566	}
567	#endif
568	if (enc->json.flags & F_CONV_BLESSED)
569	{
570	// we re-bless the reference to get overload and other niceties right
571	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
572
573	if (to_json)
574	{
575	dSP;
576
577	ENTER; SAVETMPS; PUSHMARK (SP);
578	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
579
580	// calling with G_SCALAR ensures that we always get a 1 return value
581	PUTBACK;
582	call_sv ((SV *)GvCV (to_json), G_SCALAR);
583	SPAGAIN;
584
585	// catch this surprisingly common error
586	if (SvROK (TOPs) && SvRV (TOPs) == sv)
587	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
588
589	sv = POPs;
590	PUTBACK;
591
592	encode_sv (enc, sv);
593
594	FREETMPS; LEAVE;
595	}
596	else if (enc->json.flags & F_ALLOW_BLESSED)
597	encode_str (enc, "null", 4, 0);
598	else
599	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
600	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
601	}
602	else if (enc->json.flags & F_ALLOW_BLESSED)
603	encode_str (enc, "null", 4, 0);
604	else
605	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	854	croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
606	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	855	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
607	}
608	}	856	}
609	else if (svt == SVt_PVHV)	857	else if (svt == SVt_PVHV)
610	encode_hv (enc, (HV *)sv);	858	encode_hv (enc, (HV *)sv);
611	else if (svt == SVt_PVAV)	859	else if (svt == SVt_PVAV)
612	encode_av (enc, (AV *)sv);	860	encode_av (enc, (AV *)sv);
613	else if (svt < SVt_PVAV)	861	else if (svt < SVt_PVAV)
614	{	862	{
615	STRLEN len = 0;	863	int bool_type = ref_bool_type (sv);
616	char *pv = svt ? SvPV (sv, len) : 0;
617		864
618	if (len == 1 && *pv == '1')	865	if (bool_type == 1)
619	encode_str (enc, "true", 4, 0);	866	encode_str (enc, "true", 4, 0);
620	else if (len == 1 && *pv == '0')	867	else if (bool_type == 0)
621	encode_str (enc, "false", 5, 0);	868	encode_str (enc, "false", 5, 0);
		869	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		870	encode_str (enc, "null", 4, 0);
622	else	871	else
623	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	872	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
624	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	873	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
625	}	874	}
		875	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		876	encode_str (enc, "null", 4, 0);
626	else	877	else
627	croak ("encountered %s, but JSON can only represent references to arrays or hashes",	878	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
628	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	879	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
629	}	880	}
630		881
…		…
684	}	935	}
685	else	936	else
686	{	937	{
687	// large integer, use the (rather slow) snprintf way.	938	// large integer, use the (rather slow) snprintf way.
688	need (enc, IVUV_MAXCHARS);	939	need (enc, IVUV_MAXCHARS);
689	enc->cur +=	940	enc->cur +=
690	SvIsUV(sv)	941	SvIsUV(sv)
691	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	942	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
692	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	943	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
693	}	944	}
694	}	945	}
695	else if (SvROK (sv))	946	else if (SvROK (sv))
696	encode_rv (enc, SvRV (sv));	947	encode_rv (enc, SvRV (sv));
697	else if (!SvOK (sv))	948	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
698	encode_str (enc, "null", 4, 0);	949	encode_str (enc, "null", 4, 0);
699	else	950	else
700	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	951	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
701	SvPV_nolen (sv), SvFLAGS (sv));	952	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
702	}	953	}
703		954
704	static SV *	955	static SV *
705	encode_json (SV scalar, JSON json)	956	encode_json (SV scalar, JSON json)
706	{	957	{
707	enc_t enc;	958	enc_t enc;
708		959
709	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	960	if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
710	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	961	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
711		962
712	enc.json = *json;	963	enc.json = *json;
713	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	964	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
714	enc.cur = SvPVX (enc.sv);	965	enc.cur = SvPVX (enc.sv);
715	enc.end = SvEND (enc.sv);	966	enc.end = SvEND (enc.sv);
716	enc.indent = 0;	967	enc.indent = 0;
717	enc.maxdepth = DEC_DEPTH (enc.json.flags);
718	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL	968	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL
719	: enc.json.flags & F_LATIN1 ? 0x000100UL	969	: enc.json.flags & F_LATIN1 ? 0x000100UL
720	: 0x110000UL;	970	: 0x110000UL;
721		971
722	SvPOK_only (enc.sv);	972	SvPOK_only (enc.sv);
723	encode_sv (&enc, scalar);	973	encode_sv (&enc, scalar);
		974	encode_nl (&enc);
724		975
725	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	976	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
726	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	977	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
727		978
728	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	979	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
…		…
789	if (*dec->cur != ch) \	1040	if (*dec->cur != ch) \
790	ERR (# ch " expected"); \	1041	ERR (# ch " expected"); \
791	++dec->cur; \	1042	++dec->cur; \
792	SE	1043	SE
793		1044
794	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")	1045	#define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED)
795	#define DEC_DEC_DEPTH --dec->depth	1046	#define DEC_DEC_DEPTH --dec->depth
796		1047
797	static SV decode_sv (dec_t dec);	1048	static SV decode_sv (dec_t dec);
798		1049
799	static signed char decode_hexdigit[256];	1050	static signed char decode_hexdigit[256];
…		…
908	else if (expect_true (ch >= 0x20 && ch < 0x80))	1159	else if (expect_true (ch >= 0x20 && ch < 0x80))
909	*cur++ = ch;	1160	*cur++ = ch;
910	else if (ch >= 0x80)	1161	else if (ch >= 0x80)
911	{	1162	{
912	STRLEN clen;	1163	STRLEN clen;
913	UV uch;
914		1164
915	--dec_cur;	1165	--dec_cur;
916		1166
917	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);	1167	decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
918	if (clen == (STRLEN)-1)	1168	if (clen == (STRLEN)-1)
919	ERR ("malformed UTF-8 character in JSON string");	1169	ERR ("malformed UTF-8 character in JSON string");
920		1170
921	do	1171	do
922	cur++ = dec_cur++;	1172	cur++ = dec_cur++;
923	while (--clen);	1173	while (--clen);
924		1174
925	utf8 = 1;	1175	utf8 = 1;
926	}	1176	}
		1177	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1178	*cur++ = ch;
927	else	1179	else
928	{	1180	{
929	--dec_cur;	1181	--dec_cur;
930		1182
931	if (!ch)	1183	if (!ch)
…		…
939	{	1191	{
940	STRLEN len = cur - buf;	1192	STRLEN len = cur - buf;
941		1193
942	if (sv)	1194	if (sv)
943	{	1195	{
944	SvGROW (sv, SvCUR (sv) + len + 1);	1196	STRLEN cur = SvCUR (sv);
		1197
		1198	if (SvLEN (sv) - cur <= len)
		1199	json_sv_grow (sv, cur, len);
		1200
945	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1201	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
946	SvCUR_set (sv, SvCUR (sv) + len);	1202	SvCUR_set (sv, SvCUR (sv) + len);
947	}	1203	}
948	else	1204	else
949	sv = newSVpvn (buf, len);	1205	sv = newSVpvn (buf, len);
…		…
1040		1296
1041	// special case the rather common 1..5-digit-int case	1297	// special case the rather common 1..5-digit-int case
1042	if (*start == '-')	1298	if (*start == '-')
1043	switch (len)	1299	switch (len)
1044	{	1300	{
1045	case 2: return newSViv (-( start [1] - '0' * 1));	1301	case 2: return newSViv (-(IV)( start [1] - '0' * 1));
1046	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	1302	case 3: return newSViv (-(IV)( start [1] * 10 + start [2] - '0' * 11));
1047	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));	1303	case 4: return newSViv (-(IV)( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
1048	case 5: return newSViv (-( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));	1304	case 5: return newSViv (-(IV)( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
1049	case 6: return newSViv (-(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));	1305	case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));
1050	}	1306	}
1051	else	1307	else
1052	switch (len)	1308	switch (len)
1053	{	1309	{
1054	case 1: return newSViv ( start [0] - '0' * 1);	1310	case 1: return newSViv ( start [0] - '0' * 1);
1055	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	1311	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
1056	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);	1312	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
1057	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);	1313	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
1058	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);	1314	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);
1059	}	1315	}
1060		1316
1061	{	1317	{
1062	UV uv;	1318	UV uv;
1063	int numtype = grok_number (start, len, &uv);	1319	int numtype = grok_number (start, len, &uv);
…		…
1072	}	1328	}
1073		1329
1074	len -= *start == '-' ? 1 : 0;	1330	len -= *start == '-' ? 1 : 0;
1075		1331
1076	// does not fit into IV or UV, try NV	1332	// does not fit into IV or UV, try NV
1077	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1333	if (len <= NV_DIG)
1078	#if defined (LDBL_DIG)
1079	\|\| (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
1080	#endif
1081	)
1082	// fits into NV without loss of precision	1334	// fits into NV without loss of precision
1083	return newSVnv (Atof (start));	1335	return newSVnv (json_atof (start));
1084		1336
1085	// everything else fails, convert it to a string	1337	// everything else fails, convert it to a string
1086	return newSVpvn (start, dec->cur - start);	1338	return newSVpvn (start, dec->cur - start);
1087	}	1339	}
1088		1340
1089	// loss of precision here	1341	// loss of precision here
1090	return newSVnv (Atof (start));	1342	return newSVnv (json_atof (start));
1091		1343
1092	fail:	1344	fail:
1093	return 0;	1345	return 0;
1094	}	1346	}
1095		1347
…		…
1119	if (*dec->cur == ']')	1371	if (*dec->cur == ']')
1120	{	1372	{
1121	++dec->cur;	1373	++dec->cur;
1122	break;	1374	break;
1123	}	1375	}
1124		1376
1125	if (*dec->cur != ',')	1377	if (*dec->cur != ',')
1126	ERR (", or ] expected while parsing array");	1378	ERR (", or ] expected while parsing array");
1127		1379
1128	++dec->cur;	1380	++dec->cur;
1129		1381
…		…
1171	char *p = dec->cur;	1423	char *p = dec->cur;
1172	char *e = p + 24; // only try up to 24 bytes	1424	char *e = p + 24; // only try up to 24 bytes
1173		1425
1174	for (;;)	1426	for (;;)
1175	{	1427	{
1176	// the >= 0x80 is true on most architectures	1428	// the >= 0x80 is false on most architectures
1177	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')	1429	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')
1178	{	1430	{
1179	// slow path, back up and use decode_str	1431	// slow path, back up and use decode_str
1180	SV *key = decode_str (dec);	1432	SV *key = decode_str (dec);
1181	if (!key)	1433	if (!key)
…		…
1253		1505
1254	hv_iterinit (hv);	1506	hv_iterinit (hv);
1255	he = hv_iternext (hv);	1507	he = hv_iternext (hv);
1256	hv_iterinit (hv);	1508	hv_iterinit (hv);
1257		1509
1258	// the next line creates a mortal sv each time its called.	1510	// the next line creates a mortal sv each time it's called.
1259	// might want to optimise this for common cases.	1511	// might want to optimise this for common cases.
1260	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);	1512	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1261		1513
1262	if (cb)	1514	if (cb)
1263	{	1515	{
1264	dSP;	1516	dSP;
1265	int count;	1517	int count;
1266		1518
1267	ENTER; SAVETMPS; PUSHMARK (SP);	1519	ENTER; SAVETMPS;
		1520	SAVESTACK_POS ();
		1521	PUSHMARK (SP);
1268	XPUSHs (HeVAL (he));	1522	XPUSHs (HeVAL (he));
		1523	sv_2mortal (sv);
1269		1524
1270	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1525	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1271		1526
1272	if (count == 1)	1527	if (count == 1)
1273	{	1528	{
1274	sv = newSVsv (POPs);	1529	sv = newSVsv (POPs);
1275	FREETMPS; LEAVE;	1530	FREETMPS; LEAVE;
1276	return sv;	1531	return sv;
1277	}	1532	}
1278		1533
		1534	SvREFCNT_inc (sv);
1279	FREETMPS; LEAVE;	1535	FREETMPS; LEAVE;
1280	}	1536	}
1281	}	1537	}
1282		1538
1283	if (dec->json.cb_object)	1539	if (dec->json.cb_object)
1284	{	1540	{
1285	dSP;	1541	dSP;
1286	int count;	1542	int count;
1287		1543
1288	ENTER; SAVETMPS; PUSHMARK (SP);	1544	ENTER; SAVETMPS;
		1545	SAVESTACK_POS ();
		1546	PUSHMARK (SP);
1289	XPUSHs (sv_2mortal (sv));	1547	XPUSHs (sv_2mortal (sv));
1290		1548
1291	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1549	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1292		1550
1293	if (count == 1)	1551	if (count == 1)
…		…
1309	DEC_DEC_DEPTH;	1567	DEC_DEC_DEPTH;
1310	return 0;	1568	return 0;
1311	}	1569	}
1312		1570
1313	static SV *	1571	static SV *
		1572	decode_tag (dec_t *dec)
		1573	{
		1574	SV *tag = 0;
		1575	SV *val = 0;
		1576
		1577	if (!(dec->json.flags & F_ALLOW_TAGS))
		1578	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1579
		1580	++dec->cur;
		1581
		1582	decode_ws (dec);
		1583
		1584	tag = decode_sv (dec);
		1585	if (!tag)
		1586	goto fail;
		1587
		1588	if (!SvPOK (tag))
		1589	ERR ("malformed JSON string, (tag) must be a string");
		1590
		1591	decode_ws (dec);
		1592
		1593	if (*dec->cur != ')')
		1594	ERR (") expected after tag");
		1595
		1596	++dec->cur;
		1597
		1598	decode_ws (dec);
		1599
		1600	val = decode_sv (dec);
		1601	if (!val)
		1602	goto fail;
		1603
		1604	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1605	ERR ("malformed JSON string, tag value must be an array");
		1606
		1607	{
		1608	AV av = (AV )SvRV (val);
		1609	int i, len = av_len (av) + 1;
		1610	HV *stash = gv_stashsv (tag, 0);
		1611	SV *sv;
		1612
		1613	if (!stash)
		1614	ERR ("cannot decode perl-object (package does not exist)");
		1615
		1616	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1617
		1618	if (!method)
		1619	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1620
		1621	dSP;
		1622
		1623	ENTER; SAVETMPS;
		1624	PUSHMARK (SP);
		1625	EXTEND (SP, len + 2);
		1626	// we re-bless the reference to get overload and other niceties right
		1627	PUSHs (tag);
		1628	PUSHs (sv_json);
		1629
		1630	for (i = 0; i < len; ++i)
		1631	PUSHs (*av_fetch (av, i, 1));
		1632
		1633	PUTBACK;
		1634	call_sv ((SV *)GvCV (method), G_SCALAR);
		1635	SPAGAIN;
		1636
		1637	SvREFCNT_dec (tag);
		1638	SvREFCNT_dec (val);
		1639	sv = SvREFCNT_inc (POPs);
		1640
		1641	PUTBACK;
		1642
		1643	FREETMPS; LEAVE;
		1644
		1645	return sv;
		1646	}
		1647
		1648	fail:
		1649	SvREFCNT_dec (tag);
		1650	SvREFCNT_dec (val);
		1651	return 0;
		1652	}
		1653
		1654	static SV *
1314	decode_sv (dec_t *dec)	1655	decode_sv (dec_t *dec)
1315	{	1656	{
1316	// the beauty of JSON: you need exactly one character lookahead	1657	// the beauty of JSON: you need exactly one character lookahead
1317	// to parse everything.	1658	// to parse everything.
1318	switch (*dec->cur)	1659	switch (*dec->cur)
1319	{	1660	{
1320	case '"': ++dec->cur; return decode_str (dec);	1661	case '"': ++dec->cur; return decode_str (dec);
1321	case '[': ++dec->cur; return decode_av (dec);	1662	case '[': ++dec->cur; return decode_av (dec);
1322	case '{': ++dec->cur; return decode_hv (dec);	1663	case '{': ++dec->cur; return decode_hv (dec);
		1664	case '(': return decode_tag (dec);
1323		1665
1324	case '-':	1666	case '-':
1325	case '0': case '1': case '2': case '3': case '4':	1667	case '0': case '1': case '2': case '3': case '4':
1326	case '5': case '6': case '7': case '8': case '9':	1668	case '5': case '6': case '7': case '8': case '9':
1327	return decode_num (dec);	1669	return decode_num (dec);
…		…
1329	case 't':	1671	case 't':
1330	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1672	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1331	{	1673	{
1332	dec->cur += 4;	1674	dec->cur += 4;
1333	#if JSON_SLOW	1675	#if JSON_SLOW
1334	json_true = get_sv ("JSON::XS::true", 1); SvREADONLY_on (json_true);	1676	bool_true = get_bool ("Types::Serialiser::true");
1335	#endif	1677	#endif
1336	return SvREFCNT_inc (json_true);	1678	return newSVsv (bool_true);
1337	}	1679	}
1338	else	1680	else
1339	ERR ("'true' expected");	1681	ERR ("'true' expected");
1340		1682
1341	break;	1683	break;
…		…
1343	case 'f':	1685	case 'f':
1344	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1686	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1345	{	1687	{
1346	dec->cur += 5;	1688	dec->cur += 5;
1347	#if JSON_SLOW	1689	#if JSON_SLOW
1348	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1690	bool_false = get_bool ("Types::Serialiser::false");
1349	#endif	1691	#endif
1350	return SvREFCNT_inc (json_false);	1692	return newSVsv (bool_false);
1351	}	1693	}
1352	else	1694	else
1353	ERR ("'false' expected");	1695	ERR ("'false' expected");
1354		1696
1355	break;	1697	break;
…		…
1364	ERR ("'null' expected");	1706	ERR ("'null' expected");
1365		1707
1366	break;	1708	break;
1367		1709
1368	default:	1710	default:
1369	ERR ("malformed JSON string, neither array, object, number, string or atom");	1711	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1370	break;	1712	break;
1371	}	1713	}
1372		1714
1373	fail:	1715	fail:
1374	return 0;	1716	return 0;
1375	}	1717	}
1376		1718
1377	static SV *	1719	static SV *
1378	decode_json (SV string, JSON json, UV *offset_return)	1720	decode_json (SV string, JSON json, STRLEN *offset_return)
1379	{	1721	{
1380	dec_t dec;	1722	dec_t dec;
1381	UV offset;
1382	SV *sv;	1723	SV *sv;
1383		1724
		1725	/* work around bugs in 5.10 where manipulating magic values
		1726	* makes perl ignore the magic in subsequent accesses.
		1727	* also make a copy of non-PV values, to get them into a clean
		1728	* state (SvPV should do that, but it's buggy, see below).
		1729	*
		1730	* SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
		1731	* as reported by Reini Urban.
		1732	*/
1384	SvGETMAGIC (string);	1733	/SvGETMAGIC (string);/
		1734	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
		1735	string = sv_2mortal (newSVsv (string));
		1736
1385	SvUPGRADE (string, SVt_PV);	1737	SvUPGRADE (string, SVt_PV);
1386		1738
1387	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))	1739	/* work around a bug in perl 5.10, which causes SvCUR to fail an
		1740	* assertion with -DDEBUGGING, although SvCUR is documented to
		1741	* return the xpv_cur field which certainly exists after upgrading.
		1742	* according to nicholas clark, calling SvPOK fixes this.
		1743	* But it doesn't fix it, so try another workaround, call SvPV_nolen
		1744	* and hope for the best.
		1745	* Damnit, SvPV_nolen still trips over yet another assertion. This
		1746	* assertion business is seriously broken, try yet another workaround
		1747	* for the broken -DDEBUGGING.
		1748	*/
		1749	{
		1750	#ifdef DEBUGGING
		1751	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
		1752	#else
		1753	STRLEN offset = SvCUR (string);
		1754	#endif
		1755
		1756	if (offset > json->max_size && json->max_size)
1388	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1757	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1389	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));	1758	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
		1759	}
1390		1760
1391	if (json->flags & F_UTF8)	1761	if (DECODE_WANTS_OCTETS (json))
1392	sv_utf8_downgrade (string, 0);	1762	sv_utf8_downgrade (string, 0);
1393	else	1763	else
1394	sv_utf8_upgrade (string);	1764	sv_utf8_upgrade (string);
1395		1765
1396	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1766	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1397		1767
1398	dec.json = *json;	1768	dec.json = *json;
1399	dec.cur = SvPVX (string);	1769	dec.cur = SvPVX (string);
1400	dec.end = SvEND (string);	1770	dec.end = SvEND (string);
1401	dec.err = 0;	1771	dec.err = 0;
1402	dec.depth = 0;	1772	dec.depth = 0;
1403	dec.maxdepth = DEC_DEPTH (dec.json.flags);
1404		1773
1405	if (dec.json.cb_object \|\| dec.json.cb_sk_object)	1774	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
1406	dec.json.flags \|= F_HOOK;	1775	dec.json.flags \|= F_HOOK;
1407		1776
1408	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1777	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
1409		1778
1410	decode_ws (&dec);	1779	decode_ws (&dec);
1411	sv = decode_sv (&dec);	1780	sv = decode_sv (&dec);
1412		1781
1413	if (!(offset_return \|\| !sv))	1782	if (offset_return)
		1783	*offset_return = dec.cur - SvPVX (string);
		1784	else if (sv)
1414	{	1785	{
1415	// check for trailing garbage	1786	// check for trailing garbage
1416	decode_ws (&dec);	1787	decode_ws (&dec);
1417		1788
1418	if (*dec.cur)	1789	if (*dec.cur)
1419	{	1790	{
1420	dec.err = "garbage after JSON object";	1791	dec.err = "garbage after JSON object";
1421	SvREFCNT_dec (sv);	1792	SvREFCNT_dec (sv);
1422	sv = 0;	1793	sv = 0;
1423	}	1794	}
1424	}
1425
1426	if (offset_return \|\| !sv)
1427	{
1428	offset = dec.json.flags & F_UTF8
1429	? dec.cur - SvPVX (string)
1430	: utf8_distance (dec.cur, SvPVX (string));
1431
1432	if (offset_return)
1433	*offset_return = offset;
1434	}	1795	}
1435		1796
1436	if (!sv)	1797	if (!sv)
1437	{	1798	{
1438	SV *uni = sv_newmortal ();	1799	SV *uni = sv_newmortal ();
…		…
1444	SAVEVPTR (PL_curcop);	1805	SAVEVPTR (PL_curcop);
1445	PL_curcop = &cop;	1806	PL_curcop = &cop;
1446	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1807	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1447	LEAVE;	1808	LEAVE;
1448		1809
1449	croak ("%s, at character offset %d [\"%s\"]",	1810	croak ("%s, at character offset %d (before \"%s\")",
1450	dec.err,	1811	dec.err,
1451	(int)offset,	1812	(int)ptr_to_index (string, dec.cur),
1452	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1813	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1453	}	1814	}
1454		1815
1455	sv = sv_2mortal (sv);	1816	sv = sv_2mortal (sv);
1456		1817
1457	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1818	if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1458	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1819	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1459		1820
1460	return sv;	1821	return sv;
		1822	}
		1823
		1824	/////////////////////////////////////////////////////////////////////////////
		1825	// incremental parser
		1826
		1827	static void
		1828	incr_parse (JSON *self)
		1829	{
		1830	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1831
		1832	// the state machine here is a bit convoluted and could be simplified a lot
		1833	// but this would make it slower, so...
		1834
		1835	for (;;)
		1836	{
		1837	//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
		1838	switch (self->incr_mode)
		1839	{
		1840	// only used for initial whitespace skipping
		1841	case INCR_M_WS:
		1842	for (;;)
		1843	{
		1844	if (*p > 0x20)
		1845	{
		1846	if (*p == '#')
		1847	{
		1848	self->incr_mode = INCR_M_C0;
		1849	goto incr_m_c;
		1850	}
		1851	else
		1852	{
		1853	self->incr_mode = INCR_M_JSON;
		1854	goto incr_m_json;
		1855	}
		1856	}
		1857	else if (!*p)
		1858	goto interrupt;
		1859
		1860	++p;
		1861	}
		1862
		1863	// skip a single char inside a string (for \\-processing)
		1864	case INCR_M_BS:
		1865	if (!*p)
		1866	goto interrupt;
		1867
		1868	++p;
		1869	self->incr_mode = INCR_M_STR;
		1870	goto incr_m_str;
		1871
		1872	// inside #-style comments
		1873	case INCR_M_C0:
		1874	case INCR_M_C1:
		1875	incr_m_c:
		1876	for (;;)
		1877	{
		1878	if (*p == '\n')
		1879	{
		1880	self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON;
		1881	break;
		1882	}
		1883	else if (!*p)
		1884	goto interrupt;
		1885
		1886	++p;
		1887	}
		1888
		1889	break;
		1890
		1891	// inside a string
		1892	case INCR_M_STR:
		1893	incr_m_str:
		1894	for (;;)
		1895	{
		1896	if (*p == '"')
		1897	{
		1898	++p;
		1899	self->incr_mode = INCR_M_JSON;
		1900
		1901	if (!self->incr_nest)
		1902	goto interrupt;
		1903
		1904	goto incr_m_json;
		1905	}
		1906	else if (*p == '\\')
		1907	{
		1908	++p; // "virtually" consumes character after \
		1909
		1910	if (!*p) // if at end of string we have to switch modes
		1911	{
		1912	self->incr_mode = INCR_M_BS;
		1913	goto interrupt;
		1914	}
		1915	}
		1916	else if (!*p)
		1917	goto interrupt;
		1918
		1919	++p;
		1920	}
		1921
		1922	// after initial ws, outside string
		1923	case INCR_M_JSON:
		1924	incr_m_json:
		1925	for (;;)
		1926	{
		1927	switch (*p++)
		1928	{
		1929	case 0:
		1930	--p;
		1931	goto interrupt;
		1932
		1933	case 0x09:
		1934	case 0x0a:
		1935	case 0x0d:
		1936	case 0x20:
		1937	if (!self->incr_nest)
		1938	{
		1939	--p; // do not eat the whitespace, let the next round do it
		1940	goto interrupt;
		1941	}
		1942	break;
		1943
		1944	case '"':
		1945	self->incr_mode = INCR_M_STR;
		1946	goto incr_m_str;
		1947
		1948	case '[':
		1949	case '{':
		1950	case '(':
		1951	if (++self->incr_nest > self->max_depth)
		1952	croak (ERR_NESTING_EXCEEDED);
		1953	break;
		1954
		1955	case ']':
		1956	case '}':
		1957	if (--self->incr_nest <= 0)
		1958	goto interrupt;
		1959	break;
		1960
		1961	case ')':
		1962	--self->incr_nest;
		1963	break;
		1964
		1965	case '#':
		1966	self->incr_mode = INCR_M_C1;
		1967	goto incr_m_c;
		1968	}
		1969	}
		1970	}
		1971
		1972	modechange:
		1973	;
		1974	}
		1975
		1976	interrupt:
		1977	self->incr_pos = p - SvPVX (self->incr_text);
		1978	//printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D
		1979	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
1461	}	1980	}
1462		1981
1463	/////////////////////////////////////////////////////////////////////////////	1982	/////////////////////////////////////////////////////////////////////////////
1464	// XS interface functions	1983	// XS interface functions
1465		1984
…		…
1474	i >= '0' && i <= '9' ? i - '0'	1993	i >= '0' && i <= '9' ? i - '0'
1475	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1994	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1476	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1995	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1477	: -1;	1996	: -1;
1478		1997
1479	json_stash = gv_stashpv ("JSON::XS" , 1);	1998	json_stash = gv_stashpv ("JSON::XS" , 1);
1480	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	1999	bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
		2000	bool_true = get_bool ("Types::Serialiser::true");
		2001	bool_false = get_bool ("Types::Serialiser::false");
1481		2002
1482	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );	2003	sv_json = newSVpv ("JSON", 0);
1483	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	2004	SvREADONLY_on (sv_json);
		2005
		2006	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1484	}	2007	}
1485		2008
1486	PROTOTYPES: DISABLE	2009	PROTOTYPES: DISABLE
1487		2010
1488	void CLONE (...)	2011	void CLONE (...)
1489	CODE:	2012	CODE:
1490	json_stash = 0;	2013	json_stash = 0;
1491	json_boolean_stash = 0;	2014	bool_stash = 0;
1492		2015
1493	void new (char *klass)	2016	void new (char *klass)
1494	PPCODE:	2017	PPCODE:
1495	{	2018	{
1496	SV *pv = NEWSV (0, sizeof (JSON));	2019	SV *pv = NEWSV (0, sizeof (JSON));
1497	SvPOK_only (pv);	2020	SvPOK_only (pv);
1498	Zero (SvPVX (pv), 1, JSON);	2021	json_init ((JSON *)SvPVX (pv));
1499	((JSON *)SvPVX (pv))->flags = F_DEFAULT;
1500	XPUSHs (sv_2mortal (sv_bless (	2022	XPUSHs (sv_2mortal (sv_bless (
1501	newRV_noinc (pv),	2023	newRV_noinc (pv),
1502	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	2024	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1503	)));	2025	)));
1504	}	2026	}
…		…
1516	allow_nonref = F_ALLOW_NONREF	2038	allow_nonref = F_ALLOW_NONREF
1517	shrink = F_SHRINK	2039	shrink = F_SHRINK
1518	allow_blessed = F_ALLOW_BLESSED	2040	allow_blessed = F_ALLOW_BLESSED
1519	convert_blessed = F_CONV_BLESSED	2041	convert_blessed = F_CONV_BLESSED
1520	relaxed = F_RELAXED	2042	relaxed = F_RELAXED
		2043	allow_unknown = F_ALLOW_UNKNOWN
		2044	allow_tags = F_ALLOW_TAGS
1521	PPCODE:	2045	PPCODE:
1522	{	2046	{
1523	if (enable)	2047	if (enable)
1524	self->flags \|= ix;	2048	self->flags \|= ix;
1525	else	2049	else
…		…
1540	get_allow_nonref = F_ALLOW_NONREF	2064	get_allow_nonref = F_ALLOW_NONREF
1541	get_shrink = F_SHRINK	2065	get_shrink = F_SHRINK
1542	get_allow_blessed = F_ALLOW_BLESSED	2066	get_allow_blessed = F_ALLOW_BLESSED
1543	get_convert_blessed = F_CONV_BLESSED	2067	get_convert_blessed = F_CONV_BLESSED
1544	get_relaxed = F_RELAXED	2068	get_relaxed = F_RELAXED
		2069	get_allow_unknown = F_ALLOW_UNKNOWN
		2070	get_allow_tags = F_ALLOW_TAGS
1545	PPCODE:	2071	PPCODE:
1546	XPUSHs (boolSV (self->flags & ix));	2072	XPUSHs (boolSV (self->flags & ix));
1547		2073
1548	void max_depth (JSON *self, UV max_depth = 0x80000000UL)	2074	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1549	PPCODE:	2075	PPCODE:
1550	{	2076	self->max_depth = max_depth;
1551	UV log2 = 0;
1552
1553	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1554
1555	while ((1UL << log2) < max_depth)
1556	++log2;
1557
1558	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1559
1560	XPUSHs (ST (0));	2077	XPUSHs (ST (0));
1561	}
1562		2078
1563	U32 get_max_depth (JSON *self)	2079	U32 get_max_depth (JSON *self)
1564	CODE:	2080	CODE:
1565	RETVAL = DEC_DEPTH (self->flags);	2081	RETVAL = self->max_depth;
1566	OUTPUT:	2082	OUTPUT:
1567	RETVAL	2083	RETVAL
1568		2084
1569	void max_size (JSON *self, UV max_size = 0)	2085	void max_size (JSON *self, U32 max_size = 0)
1570	PPCODE:	2086	PPCODE:
1571	{	2087	self->max_size = max_size;
1572	UV log2 = 0;
1573
1574	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
1575	if (max_size == 1) max_size = 2;
1576
1577	while ((1UL << log2) < max_size)
1578	++log2;
1579
1580	self->flags = self->flags & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
1581
1582	XPUSHs (ST (0));	2088	XPUSHs (ST (0));
1583	}
1584		2089
1585	int get_max_size (JSON *self)	2090	int get_max_size (JSON *self)
1586	CODE:	2091	CODE:
1587	RETVAL = DEC_SIZE (self->flags);	2092	RETVAL = self->max_size;
1588	OUTPUT:	2093	OUTPUT:
1589	RETVAL	2094	RETVAL
1590		2095
1591	void filter_json_object (JSON self, SV cb = &PL_sv_undef)	2096	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1592	PPCODE:	2097	PPCODE:
…		…
1598	}	2103	}
1599		2104
1600	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2105	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1601	PPCODE:	2106	PPCODE:
1602	{	2107	{
1603	if (!self->cb_sk_object)	2108	if (!self->cb_sk_object)
1604	self->cb_sk_object = newHV ();	2109	self->cb_sk_object = newHV ();
1605		2110
1606	if (SvOK (cb))	2111	if (SvOK (cb))
1607	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2112	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1608	else	2113	else
…		…
1619	XPUSHs (ST (0));	2124	XPUSHs (ST (0));
1620	}	2125	}
1621		2126
1622	void encode (JSON self, SV scalar)	2127	void encode (JSON self, SV scalar)
1623	PPCODE:	2128	PPCODE:
1624	XPUSHs (encode_json (scalar, self));	2129	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2130	XPUSHs (scalar);
1625		2131
1626	void decode (JSON self, SV jsonstr)	2132	void decode (JSON self, SV jsonstr)
1627	PPCODE:	2133	PPCODE:
1628	XPUSHs (decode_json (jsonstr, self, 0));	2134	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2135	XPUSHs (jsonstr);
1629		2136
1630	void decode_prefix (JSON self, SV jsonstr)	2137	void decode_prefix (JSON self, SV jsonstr)
1631	PPCODE:	2138	PPCODE:
1632	{	2139	{
1633	UV offset;	2140	SV *sv;
		2141	STRLEN offset;
		2142	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1634	EXTEND (SP, 2);	2143	EXTEND (SP, 2);
1635	PUSHs (decode_json (jsonstr, self, &offset));	2144	PUSHs (sv);
1636	PUSHs (sv_2mortal (newSVuv (offset)));	2145	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
		2146	}
		2147
		2148	void incr_parse (JSON self, SV jsonstr = 0)
		2149	PPCODE:
		2150	{
		2151	if (!self->incr_text)
		2152	self->incr_text = newSVpvn ("", 0);
		2153
		2154	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2155	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2156	if (DECODE_WANTS_OCTETS (self))
		2157	{
		2158	if (self->incr_pos)
		2159	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2160	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2161
		2162	sv_utf8_downgrade (self->incr_text, 0);
		2163	}
		2164	else
		2165	{
		2166	sv_utf8_upgrade (self->incr_text);
		2167
		2168	if (self->incr_pos)
		2169	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2170	- (U8 *)SvPVX (self->incr_text);
		2171	}
		2172
		2173	// append data, if any
		2174	if (jsonstr)
		2175	{
		2176	/* make sure both strings have same encoding */
		2177	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
		2178	if (SvUTF8 (jsonstr))
		2179	sv_utf8_downgrade (jsonstr, 0);
		2180	else
		2181	sv_utf8_upgrade (jsonstr);
		2182
		2183	/* and then just blindly append */
		2184	{
		2185	STRLEN len;
		2186	const char *str = SvPV (jsonstr, len);
		2187	STRLEN cur = SvCUR (self->incr_text);
		2188
		2189	if (SvLEN (self->incr_text) - cur <= len)
		2190	json_sv_grow (self->incr_text, cur, len);
		2191
		2192	Move (str, SvEND (self->incr_text), len, char);
		2193	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
		2194	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
		2195	}
		2196	}
		2197
		2198	if (GIMME_V != G_VOID)
		2199	do
		2200	{
		2201	SV *sv;
		2202	STRLEN offset;
		2203
		2204	if (!INCR_DONE (self))
		2205	{
		2206	incr_parse (self);
		2207
		2208	if (self->incr_pos > self->max_size && self->max_size)
		2209	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		2210	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
		2211
		2212	if (!INCR_DONE (self))
		2213	{
		2214	// as an optimisation, do not accumulate white space in the incr buffer
		2215	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2216	{
		2217	self->incr_pos = 0;
		2218	SvCUR_set (self->incr_text, 0);
		2219	}
		2220
		2221	break;
		2222	}
		2223	}
		2224
		2225	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2226	XPUSHs (sv);
		2227
		2228	self->incr_pos -= offset;
		2229	self->incr_nest = 0;
		2230	self->incr_mode = 0;
		2231
		2232	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
		2233	}
		2234	while (GIMME_V == G_ARRAY);
		2235	}
		2236
		2237	SV incr_text (JSON self)
		2238	ATTRS: lvalue
		2239	CODE:
		2240	{
		2241	if (self->incr_pos)
		2242	croak ("incr_text can not be called when the incremental parser already started parsing");
		2243
		2244	RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef;
		2245	}
		2246	OUTPUT:
		2247	RETVAL
		2248
		2249	void incr_skip (JSON *self)
		2250	CODE:
		2251	{
		2252	if (self->incr_pos)
		2253	{
		2254	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos);
		2255	self->incr_pos = 0;
		2256	self->incr_nest = 0;
		2257	self->incr_mode = 0;
		2258	}
		2259	}
		2260
		2261	void incr_reset (JSON *self)
		2262	CODE:
		2263	{
		2264	SvREFCNT_dec (self->incr_text);
		2265	self->incr_text = 0;
		2266	self->incr_pos = 0;
		2267	self->incr_nest = 0;
		2268	self->incr_mode = 0;
1637	}	2269	}
1638		2270
1639	void DESTROY (JSON *self)	2271	void DESTROY (JSON *self)
1640	CODE:	2272	CODE:
1641	SvREFCNT_dec (self->cb_sk_object);	2273	SvREFCNT_dec (self->cb_sk_object);
1642	SvREFCNT_dec (self->cb_object);	2274	SvREFCNT_dec (self->cb_object);
		2275	SvREFCNT_dec (self->incr_text);
1643		2276
1644	PROTOTYPES: ENABLE	2277	PROTOTYPES: ENABLE
1645		2278
1646	void encode_json (SV *scalar)	2279	void encode_json (SV *scalar)
1647	ALIAS:
1648	to_json_ = 0
1649	encode_json = F_UTF8
1650	PPCODE:	2280	PPCODE:
1651	{	2281	{
1652	JSON json = { F_DEFAULT \| ix };	2282	JSON json;
1653	XPUSHs (encode_json (scalar, &json));	2283	json_init (&json);
		2284	json.flags \|= F_UTF8;
		2285	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2286	XPUSHs (scalar);
1654	}	2287	}
1655		2288
1656	void decode_json (SV *jsonstr)	2289	void decode_json (SV *jsonstr)
1657	ALIAS:
1658	from_json_ = 0
1659	decode_json = F_UTF8
1660	PPCODE:	2290	PPCODE:
1661	{	2291	{
1662	JSON json = { F_DEFAULT \| ix };	2292	JSON json;
1663	XPUSHs (decode_json (jsonstr, &json, 0));	2293	json_init (&json);
		2294	json.flags \|= F_UTF8;
		2295	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2296	XPUSHs (jsonstr);
1664	}	2297	}
1665		2298

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing JSON-XS/XS.xs (file contents): Revision 1.76 by root, Thu Mar 20 00:56:37 2008 UTC vs. Revision 1.131 by root, Thu Aug 17 01:42:20 2017 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.76 by root, Thu Mar 20 00:56:37 2008 UTC vs.
Revision 1.131 by root, Thu Aug 17 01:42:20 2017 UTC