[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 1.136 by root, Thu Nov 15 22:35:35 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
…		…
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 64 // 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
74	# 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))
75	#else	86	#else
76	# define JSON_SLOW 0
77	# define JSON_STASH json_stash	87	# define JSON_STASH json_stash
		88	# define BOOL_STASH bool_stash
		89	# define GET_BOOL(value) bool_ ## value
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_false, bool_true;
		97	static SV *sv_json;
		98
		99	enum {
		100	INCR_M_WS = 0, // initial whitespace skipping, must be 0
		101	INCR_M_TFN, // inside true/false/null
		102	INCR_M_NUM, // inside number
		103	INCR_M_STR, // inside string
		104	INCR_M_BS, // inside backslash
		105	INCR_M_C0, // inside comment in initial whitespace sequence
		106	INCR_M_C1, // inside comment in other places
		107	INCR_M_JSON // outside anything, count nesting
		108	};
		109
		110	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)
82		111
83	typedef struct {	112	typedef struct {
84	U32 flags;	113	U32 flags;
		114	U32 max_depth;
		115	STRLEN max_size;
		116
85	SV *cb_object;	117	SV *cb_object;
86	HV *cb_sk_object;	118	HV *cb_sk_object;
		119
		120	// for the incremental parser
		121	SV *incr_text; // the source text so far
		122	STRLEN incr_pos; // the current offset into the text
		123	int incr_nest; // {[]}-nesting level
		124	unsigned char incr_mode;
		125
		126	SV v_false, v_true;
87	} JSON;	127	} JSON;
		128
		129	INLINE void
		130	json_init (JSON *json)
		131	{
		132	static const JSON init = { F_ALLOW_NONREF, 512 };
		133
		134	*json = init;
		135	}
88		136
89	/////////////////////////////////////////////////////////////////////////////	137	/////////////////////////////////////////////////////////////////////////////
90	// utility functions	138	// utility functions
91		139
		140	INLINE SV *
		141	get_bool (const char *name)
		142	{
		143	SV *sv = get_sv (name, 1);
		144
		145	SvREADONLY_on (sv);
		146	SvREADONLY_on (SvRV (sv));
		147
		148	return sv;
		149	}
		150
92	INLINE void	151	INLINE void
93	shrink (SV *sv)	152	shrink (SV *sv)
94	{	153	{
95	sv_utf8_downgrade (sv, 1);	154	sv_utf8_downgrade (sv, 1);
		155
96	if (SvLEN (sv) > SvCUR (sv) + 1)	156	if (SvLEN (sv) > SvCUR (sv) + 1)
97	{	157	{
98	#ifdef SvPV_shrink_to_cur	158	#ifdef SvPV_shrink_to_cur
99	SvPV_shrink_to_cur (sv);	159	SvPV_shrink_to_cur (sv);
100	#elif defined (SvPV_renew)	160	#elif defined (SvPV_renew)
101	SvPV_renew (sv, SvCUR (sv) + 1);	161	SvPV_renew (sv, SvCUR (sv) + 1);
102	#endif	162	#endif
103	}	163	}
104	}	164	}
105		165
		166	/* adds two STRLENs together, slow, and with paranoia */
		167	STRLEN
		168	strlen_sum (STRLEN l1, STRLEN l2)
		169	{
		170	size_t sum = l1 + l2;
		171
		172	if (sum < (size_t)l2 \|\| sum != (size_t)(STRLEN)sum)
		173	croak ("JSON::XS: string size overflow");
		174
		175	return sum;
		176	}
		177
		178	/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */
		179	static char *
		180	json_sv_grow (SV *sv, size_t len1, size_t len2)
		181	{
		182	len1 = strlen_sum (len1, len2);
		183	len1 = strlen_sum (len1, len1 >> 1);
		184
		185	if (len1 > 4096 - 24)
		186	len1 = (len1 \| 4095) - 24;
		187
		188	return SvGROW (sv, len1);
		189	}
		190
106	// decode an utf-8 character and return it, or (UV)-1 in	191	// decode a utf-8 character and return it, or (UV)-1 in
107	// case of an error.	192	// case of an error.
108	// we special-case "safe" characters from U+80 .. U+7FF,	193	// we special-case "safe" characters from U+80 .. U+7FF,
109	// but use the very good perl function to parse anything else.	194	// but use the very good perl function to parse anything else.
110	// note that we never call this function for a ascii codepoints	195	// note that we never call this function for a ascii codepoints
111	INLINE UV	196	INLINE UV
…		…
144	*s++ = 0x80 \| ( ch & 0x3f);	229	*s++ = 0x80 \| ( ch & 0x3f);
145		230
146	return s;	231	return s;
147	}	232	}
148		233
		234	// convert offset pointer to character index, sv must be string
		235	static STRLEN
		236	ptr_to_index (SV sv, char offset)
		237	{
		238	return SvUTF8 (sv)
		239	? utf8_distance (offset, SvPVX (sv))
		240	: offset - SvPVX (sv);
		241	}
		242
		243	/////////////////////////////////////////////////////////////////////////////
		244	// fp hell
		245
		246	// scan a group of digits, and a trailing exponent
		247	static void
		248	json_atof_scan1 (const char s, NV accum, int *expo, int postdp, int maxdepth)
		249	{
		250	UV uaccum = 0;
		251	int eaccum = 0;
		252
		253	// if we recurse too deep, skip all remaining digits
		254	// to avoid a stack overflow attack
		255	if (expect_false (--maxdepth <= 0))
		256	while (((U8)*s - '0') < 10)
		257	++s;
		258
		259	for (;;)
		260	{
		261	U8 dig = (U8)*s - '0';
		262
		263	if (expect_false (dig >= 10))
		264	{
		265	if (dig == (U8)((U8)'.' - (U8)'0'))
		266	{
		267	++s;
		268	json_atof_scan1 (s, accum, expo, 1, maxdepth);
		269	}
		270	else if ((dig \| ' ') == 'e' - '0')
		271	{
		272	int exp2 = 0;
		273	int neg = 0;
		274
		275	++s;
		276
		277	if (*s == '-')
		278	{
		279	++s;
		280	neg = 1;
		281	}
		282	else if (*s == '+')
		283	++s;
		284
		285	while ((dig = (U8)*s - '0') < 10)
		286	exp2 = exp2 * 10 + *s++ - '0';
		287
		288	*expo += neg ? -exp2 : exp2;
		289	}
		290
		291	break;
		292	}
		293
		294	++s;
		295
		296	uaccum = uaccum * 10 + dig;
		297	++eaccum;
		298
		299	// if we have too many digits, then recurse for more
		300	// we actually do this for rather few digits
		301	if (uaccum >= (UV_MAX - 9) / 10)
		302	{
		303	if (postdp) *expo -= eaccum;
		304	json_atof_scan1 (s, accum, expo, postdp, maxdepth);
		305	if (postdp) *expo += eaccum;
		306
		307	break;
		308	}
		309	}
		310
		311	// this relies greatly on the quality of the pow ()
		312	// implementation of the platform, but a good
		313	// implementation is hard to beat.
		314	// (IEEE 754 conformant ones are required to be exact)
		315	if (postdp) *expo -= eaccum;
		316	accum += uaccum Perl_pow (10., *expo);
		317	*expo += eaccum;
		318	}
		319
		320	static NV
		321	json_atof (const char *s)
		322	{
		323	NV accum = 0.;
		324	int expo = 0;
		325	int neg = 0;
		326
		327	if (*s == '-')
		328	{
		329	++s;
		330	neg = 1;
		331	}
		332
		333	// a recursion depth of ten gives us >>500 bits
		334	json_atof_scan1 (s, &accum, &expo, 0, 10);
		335
		336	return neg ? -accum : accum;
		337	}
		338
		339	// target of scalar reference is bool? -1 == nope, 0 == false, 1 == true
		340	static int
		341	ref_bool_type (SV *sv)
		342	{
		343	svtype svt = SvTYPE (sv);
		344
		345	if (svt < SVt_PVAV)
		346	{
		347	STRLEN len = 0;
		348	char *pv = svt ? SvPV (sv, len) : 0;
		349
		350	if (len == 1)
		351	if (*pv == '1')
		352	return 1;
		353	else if (*pv == '0')
		354	return 0;
		355	}
		356
		357	return -1;
		358	}
		359
		360	// returns whether scalar is not a reference in the sense of allow_nonref
		361	static int
		362	json_nonref (SV *scalar)
		363	{
		364	if (!SvROK (scalar))
		365	return 1;
		366
		367	scalar = SvRV (scalar);
		368
		369	if (SvTYPE (scalar) >= SVt_PVMG)
		370	{
		371	if (SvSTASH (scalar) == bool_stash)
		372	return 1;
		373
		374	if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0)
		375	return 1;
		376	}
		377
		378	return 0;
		379	}
		380
149	/////////////////////////////////////////////////////////////////////////////	381	/////////////////////////////////////////////////////////////////////////////
150	// encoder	382	// encoder
151		383
152	// structure used for encoding JSON	384	// structure used for encoding JSON
153	typedef struct	385	typedef struct
…		…
155	char *cur; // SvPVX (sv) + current output position	387	char *cur; // SvPVX (sv) + current output position
156	char *end; // SvEND (sv)	388	char *end; // SvEND (sv)
157	SV *sv; // result scalar	389	SV *sv; // result scalar
158	JSON json;	390	JSON json;
159	U32 indent; // indentation level	391	U32 indent; // indentation level
160	U32 maxdepth; // max. indentation/recursion level
161	UV limit; // escape character values >= this value when encoding	392	UV limit; // escape character values >= this value when encoding
162	} enc_t;	393	} enc_t;
163		394
164	INLINE void	395	INLINE void
165	need (enc_t *enc, STRLEN len)	396	need (enc_t *enc, STRLEN len)
166	{	397	{
167	if (expect_false (enc->cur + len >= enc->end))	398	if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
168	{	399	{
169	STRLEN cur = enc->cur - SvPVX (enc->sv);	400	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
170	SvGROW (enc->sv, cur + len + 1);	401	char *buf = json_sv_grow (enc->sv, cur, len);
171	enc->cur = SvPVX (enc->sv) + cur;	402	enc->cur = buf + cur;
172	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	403	enc->end = buf + SvLEN (enc->sv) - 1;
173	}	404	}
174	}	405	}
175		406
176	INLINE void	407	INLINE void
177	encode_ch (enc_t *enc, char ch)	408	encode_ch (enc_t *enc, char ch)
…		…
193		424
194	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case	425	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
195	{	426	{
196	if (expect_false (ch == '"')) // but with slow exceptions	427	if (expect_false (ch == '"')) // but with slow exceptions
197	{	428	{
198	need (enc, len += 1);	429	need (enc, len + 1);
199	*enc->cur++ = '\\';	430	*enc->cur++ = '\\';
200	*enc->cur++ = '"';	431	*enc->cur++ = '"';
201	}	432	}
202	else if (expect_false (ch == '\\'))	433	else if (expect_false (ch == '\\'))
203	{	434	{
204	need (enc, len += 1);	435	need (enc, len + 1);
205	*enc->cur++ = '\\';	436	*enc->cur++ = '\\';
206	*enc->cur++ = '\\';	437	*enc->cur++ = '\\';
207	}	438	}
208	else	439	else
209	*enc->cur++ = ch;	440	*enc->cur++ = ch;
…		…
212	}	443	}
213	else	444	else
214	{	445	{
215	switch (ch)	446	switch (ch)
216	{	447	{
217	case '\010': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;	448	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;	449	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;	450	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;	451	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;	452	case '\015': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;
222		453
223	default:	454	default:
224	{	455	{
225	STRLEN clen;	456	STRLEN clen;
226	UV uch;	457	UV uch;
…		…
242	if (uch >= 0x10000UL)	473	if (uch >= 0x10000UL)
243	{	474	{
244	if (uch >= 0x110000UL)	475	if (uch >= 0x110000UL)
245	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);	476	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
246		477
247	need (enc, len += 11);	478	need (enc, len + 11);
248	sprintf (enc->cur, "\\u%04x\\u%04x",	479	sprintf (enc->cur, "\\u%04x\\u%04x",
249	(int)((uch - 0x10000) / 0x400 + 0xD800),	480	(int)((uch - 0x10000) / 0x400 + 0xD800),
250	(int)((uch - 0x10000) % 0x400 + 0xDC00));	481	(int)((uch - 0x10000) % 0x400 + 0xDC00));
251	enc->cur += 12;	482	enc->cur += 12;
252	}	483	}
253	else	484	else
254	{	485	{
255	static char hexdigit [16] = "0123456789abcdef";
256	need (enc, len += 5);	486	need (enc, len + 5);
257	*enc->cur++ = '\\';	487	*enc->cur++ = '\\';
258	*enc->cur++ = 'u';	488	*enc->cur++ = 'u';
259	*enc->cur++ = hexdigit [ uch >> 12 ];	489	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
260	*enc->cur++ = hexdigit [(uch >> 8) & 15];	490	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
261	*enc->cur++ = hexdigit [(uch >> 4) & 15];	491	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
262	*enc->cur++ = hexdigit [(uch >> 0) & 15];	492	*enc->cur++ = PL_hexdigit [(uch >> 0) & 15];
263	}	493	}
264		494
265	str += clen;	495	str += clen;
266	}	496	}
267	else if (enc->json.flags & F_LATIN1)	497	else if (enc->json.flags & F_LATIN1)
…		…
269	*enc->cur++ = uch;	499	*enc->cur++ = uch;
270	str += clen;	500	str += clen;
271	}	501	}
272	else if (is_utf8)	502	else if (is_utf8)
273	{	503	{
274	need (enc, len += clen);	504	need (enc, len + clen);
275	do	505	do
276	{	506	{
277	enc->cur++ = str++;	507	enc->cur++ = str++;
278	}	508	}
279	while (--clen);	509	while (--clen);
280	}	510	}
281	else	511	else
282	{	512	{
283	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed	513	need (enc, len + UTF8_MAXBYTES - 1); // never more than 11 bytes needed
284	enc->cur = encode_utf8 (enc->cur, uch);	514	enc->cur = encode_utf8 (enc->cur, uch);
285	++str;	515	++str;
286	}	516	}
287	}	517	}
288	}	518	}
…		…
338	static void	568	static void
339	encode_av (enc_t enc, AV av)	569	encode_av (enc_t enc, AV av)
340	{	570	{
341	int i, len = av_len (av);	571	int i, len = av_len (av);
342		572
343	if (enc->indent >= enc->maxdepth)	573	if (enc->indent >= enc->json.max_depth)
344	croak ("data structure too deep (hit recursion limit)");	574	croak (ERR_NESTING_EXCEEDED);
345		575
346	encode_ch (enc, '[');	576	encode_ch (enc, '[');
347		577
348	if (len >= 0)	578	if (len >= 0)
349	{	579	{
350	encode_nl (enc); ++enc->indent;	580	encode_nl (enc); ++enc->indent;
351		581
352	for (i = 0; i <= len; ++i)	582	for (i = 0; i <= len; ++i)
…		…
364	encode_comma (enc);	594	encode_comma (enc);
365	}	595	}
366		596
367	encode_nl (enc); --enc->indent; encode_indent (enc);	597	encode_nl (enc); --enc->indent; encode_indent (enc);
368	}	598	}
369		599
370	encode_ch (enc, ']');	600	encode_ch (enc, ']');
371	}	601	}
372		602
373	static void	603	static void
374	encode_hk (enc_t enc, HE he)	604	encode_hk (enc_t enc, HE he)
…		…
378	if (HeKLEN (he) == HEf_SVKEY)	608	if (HeKLEN (he) == HEf_SVKEY)
379	{	609	{
380	SV *sv = HeSVKEY (he);	610	SV *sv = HeSVKEY (he);
381	STRLEN len;	611	STRLEN len;
382	char *str;	612	char *str;
383		613
384	SvGETMAGIC (sv);	614	SvGETMAGIC (sv);
385	str = SvPV (sv, len);	615	str = SvPV (sv, len);
386		616
387	encode_str (enc, str, len, SvUTF8 (sv));	617	encode_str (enc, str, len, SvUTF8 (sv));
388	}	618	}
…		…
423		653
424	static void	654	static void
425	encode_hv (enc_t enc, HV hv)	655	encode_hv (enc_t enc, HV hv)
426	{	656	{
427	HE *he;	657	HE *he;
428	int count;
429		658
430	if (enc->indent >= enc->maxdepth)	659	if (enc->indent >= enc->json.max_depth)
431	croak ("data structure too deep (hit recursion limit)");	660	croak (ERR_NESTING_EXCEEDED);
432		661
433	encode_ch (enc, '{');	662	encode_ch (enc, '{');
434		663
435	// for canonical output we have to sort by keys first	664	// for canonical output we have to sort by keys first
436	// actually, this is mostly due to the stupid so-called	665	// actually, this is mostly due to the stupid so-called
437	// security workaround added somewhere in 5.8.x.	666	// security workaround added somewhere in 5.8.x
438	// that randomises hash orderings	667	// that randomises hash orderings
439	if (enc->json.flags & F_CANONICAL)	668	if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv))
440	{	669	{
441	int count = hv_iterinit (hv);	670	int count = hv_iterinit (hv);
442		671
443	if (SvMAGICAL (hv))	672	if (SvMAGICAL (hv))
444	{	673	{
…		…
455	}	684	}
456		685
457	if (count)	686	if (count)
458	{	687	{
459	int i, fast = 1;	688	int i, fast = 1;
460	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	689	HE *hes_stack [STACK_HES];
461	HE *hes = _alloca (count sizeof (HE));	690	HE **hes = hes_stack;
462	#else	691
463	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	692	// allocate larger arrays on the heap
464	#endif	693	if (count > STACK_HES)
		694	{
		695	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		696	hes = (HE **)SvPVX (sv);
		697	}
465		698
466	i = 0;	699	i = 0;
467	while ((he = hv_iternext (hv)))	700	while ((he = hv_iternext (hv)))
468	{	701	{
469	hes [i++] = he;	702	hes [i++] = he;
…		…
538	// encode objects, arrays and special \0=false and \1=true values.	771	// encode objects, arrays and special \0=false and \1=true values.
539	static void	772	static void
540	encode_rv (enc_t enc, SV sv)	773	encode_rv (enc_t enc, SV sv)
541	{	774	{
542	svtype svt;	775	svtype svt;
		776	GV *method;
543		777
544	SvGETMAGIC (sv);	778	SvGETMAGIC (sv);
545	svt = SvTYPE (sv);	779	svt = SvTYPE (sv);
546		780
547	if (expect_false (SvOBJECT (sv)))	781	if (expect_false (SvOBJECT (sv)))
548	{	782	{
549	HV *stash = !JSON_SLOW \|\| json_boolean_stash	783	HV *stash = SvSTASH (sv);
550	? json_boolean_stash
551	: gv_stashpv ("JSON::XS::Boolean", 1);
552		784
553	if (SvSTASH (sv) == stash)	785	if (stash == bool_stash)
554	{	786	{
555	if (SvIV (sv))
556	encode_str (enc, "true", 4, 0);	787	if (SvIV (sv)) encode_str (enc, "true" , 4, 0);
557	else
558	encode_str (enc, "false", 5, 0);	788	else encode_str (enc, "false", 5, 0);
559	}	789	}
		790	else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
		791	{
		792	int count;
		793	dSP;
		794
		795	ENTER; SAVETMPS;
		796	PUSHMARK (SP);
		797	EXTEND (SP, 2);
		798	// we re-bless the reference to get overload and other niceties right
		799	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		800	PUSHs (sv_json);
		801
		802	PUTBACK;
		803	count = call_sv ((SV *)GvCV (method), G_ARRAY);
		804	SPAGAIN;
		805
		806	// catch this surprisingly common error
		807	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		808	croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		809
		810	encode_ch (enc, '(');
		811	encode_ch (enc, '"');
		812	encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
		813	encode_ch (enc, '"');
		814	encode_ch (enc, ')');
		815	encode_ch (enc, '[');
		816
		817	if (count)
		818	{
		819	int i;
		820
		821	for (i = 0; i < count - 1; ++i)
		822	{
		823	encode_sv (enc, SP[i + 1 - count]);
		824	encode_ch (enc, ',');
		825	}
		826
		827	encode_sv (enc, TOPs);
		828	SP -= count;
		829	}
		830
		831	encode_ch (enc, ']');
		832
		833	FREETMPS; LEAVE;
		834	}
		835	else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
		836	{
		837	dSP;
		838
		839	ENTER; SAVETMPS;
		840	PUSHMARK (SP);
		841	// we re-bless the reference to get overload and other niceties right
		842	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		843
		844	// calling with G_SCALAR ensures that we always get a 1 return value
		845	PUTBACK;
		846	call_sv ((SV *)GvCV (method), G_SCALAR);
		847	SPAGAIN;
		848
		849	// catch this surprisingly common error
		850	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		851	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		852
		853	sv = POPs;
		854	PUTBACK;
		855
		856	encode_sv (enc, sv);
		857
		858	FREETMPS; LEAVE;
		859	}
		860	else if (enc->json.flags & F_ALLOW_BLESSED)
		861	encode_str (enc, "null", 4, 0);
560	else	862	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",	863	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))));	864	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
607	}
608	}	865	}
609	else if (svt == SVt_PVHV)	866	else if (svt == SVt_PVHV)
610	encode_hv (enc, (HV *)sv);	867	encode_hv (enc, (HV *)sv);
611	else if (svt == SVt_PVAV)	868	else if (svt == SVt_PVAV)
612	encode_av (enc, (AV *)sv);	869	encode_av (enc, (AV *)sv);
613	else if (svt < SVt_PVAV)	870	else if (svt < SVt_PVAV)
614	{	871	{
615	STRLEN len = 0;	872	int bool_type = ref_bool_type (sv);
616	char *pv = svt ? SvPV (sv, len) : 0;
617		873
618	if (len == 1 && *pv == '1')	874	if (bool_type == 1)
619	encode_str (enc, "true", 4, 0);	875	encode_str (enc, "true", 4, 0);
620	else if (len == 1 && *pv == '0')	876	else if (bool_type == 0)
621	encode_str (enc, "false", 5, 0);	877	encode_str (enc, "false", 5, 0);
		878	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		879	encode_str (enc, "null", 4, 0);
622	else	880	else
623	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	881	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
624	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	882	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
625	}	883	}
		884	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		885	encode_str (enc, "null", 4, 0);
626	else	886	else
627	croak ("encountered %s, but JSON can only represent references to arrays or hashes",	887	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
628	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	888	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
629	}	889	}
630		890
…		…
684	}	944	}
685	else	945	else
686	{	946	{
687	// large integer, use the (rather slow) snprintf way.	947	// large integer, use the (rather slow) snprintf way.
688	need (enc, IVUV_MAXCHARS);	948	need (enc, IVUV_MAXCHARS);
689	enc->cur +=	949	enc->cur +=
690	SvIsUV(sv)	950	SvIsUV(sv)
691	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	951	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
692	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	952	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
693	}	953	}
694	}	954	}
695	else if (SvROK (sv))	955	else if (SvROK (sv))
696	encode_rv (enc, SvRV (sv));	956	encode_rv (enc, SvRV (sv));
697	else if (!SvOK (sv))	957	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
698	encode_str (enc, "null", 4, 0);	958	encode_str (enc, "null", 4, 0);
699	else	959	else
700	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	960	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
701	SvPV_nolen (sv), SvFLAGS (sv));	961	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
702	}	962	}
703		963
704	static SV *	964	static SV *
705	encode_json (SV scalar, JSON json)	965	encode_json (SV scalar, JSON json)
706	{	966	{
707	enc_t enc;	967	enc_t enc;
708		968
709	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	969	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)");	970	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
711		971
712	enc.json = *json;	972	enc.json = *json;
713	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	973	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
714	enc.cur = SvPVX (enc.sv);	974	enc.cur = SvPVX (enc.sv);
715	enc.end = SvEND (enc.sv);	975	enc.end = SvEND (enc.sv);
716	enc.indent = 0;	976	enc.indent = 0;
717	enc.maxdepth = DEC_DEPTH (enc.json.flags);
718	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL	977	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL
719	: enc.json.flags & F_LATIN1 ? 0x000100UL	978	: enc.json.flags & F_LATIN1 ? 0x000100UL
720	: 0x110000UL;	979	: 0x110000UL;
721		980
722	SvPOK_only (enc.sv);	981	SvPOK_only (enc.sv);
723	encode_sv (&enc, scalar);	982	encode_sv (&enc, scalar);
		983	encode_nl (&enc);
724		984
725	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	985	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
726	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	986	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
727		987
728	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	988	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
…		…
789	if (*dec->cur != ch) \	1049	if (*dec->cur != ch) \
790	ERR (# ch " expected"); \	1050	ERR (# ch " expected"); \
791	++dec->cur; \	1051	++dec->cur; \
792	SE	1052	SE
793		1053
794	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")	1054	#define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED)
795	#define DEC_DEC_DEPTH --dec->depth	1055	#define DEC_DEC_DEPTH --dec->depth
796		1056
797	static SV decode_sv (dec_t dec);	1057	static SV decode_sv (dec_t dec);
798		1058
799	static signed char decode_hexdigit[256];	1059	static signed char decode_hexdigit[256];
…		…
908	else if (expect_true (ch >= 0x20 && ch < 0x80))	1168	else if (expect_true (ch >= 0x20 && ch < 0x80))
909	*cur++ = ch;	1169	*cur++ = ch;
910	else if (ch >= 0x80)	1170	else if (ch >= 0x80)
911	{	1171	{
912	STRLEN clen;	1172	STRLEN clen;
913	UV uch;
914		1173
915	--dec_cur;	1174	--dec_cur;
916		1175
917	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);	1176	decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
918	if (clen == (STRLEN)-1)	1177	if (clen == (STRLEN)-1)
919	ERR ("malformed UTF-8 character in JSON string");	1178	ERR ("malformed UTF-8 character in JSON string");
920		1179
921	do	1180	do
922	cur++ = dec_cur++;	1181	cur++ = dec_cur++;
923	while (--clen);	1182	while (--clen);
924		1183
925	utf8 = 1;	1184	utf8 = 1;
926	}	1185	}
		1186	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1187	*cur++ = ch;
927	else	1188	else
928	{	1189	{
929	--dec_cur;	1190	--dec_cur;
930		1191
931	if (!ch)	1192	if (!ch)
…		…
939	{	1200	{
940	STRLEN len = cur - buf;	1201	STRLEN len = cur - buf;
941		1202
942	if (sv)	1203	if (sv)
943	{	1204	{
944	SvGROW (sv, SvCUR (sv) + len + 1);	1205	STRLEN cur = SvCUR (sv);
		1206
		1207	if (SvLEN (sv) - cur <= len)
		1208	json_sv_grow (sv, cur, len);
		1209
945	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1210	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
946	SvCUR_set (sv, SvCUR (sv) + len);	1211	SvCUR_set (sv, SvCUR (sv) + len);
947	}	1212	}
948	else	1213	else
949	sv = newSVpvn (buf, len);	1214	sv = newSVpvn (buf, len);
…		…
1040		1305
1041	// special case the rather common 1..5-digit-int case	1306	// special case the rather common 1..5-digit-int case
1042	if (*start == '-')	1307	if (*start == '-')
1043	switch (len)	1308	switch (len)
1044	{	1309	{
1045	case 2: return newSViv (-( start [1] - '0' * 1));	1310	case 2: return newSViv (-(IV)( start [1] - '0' * 1));
1046	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	1311	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));	1312	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));	1313	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));	1314	case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));
1050	}	1315	}
1051	else	1316	else
1052	switch (len)	1317	switch (len)
1053	{	1318	{
1054	case 1: return newSViv ( start [0] - '0' * 1);	1319	case 1: return newSViv ( start [0] - '0' * 1);
1055	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	1320	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);	1321	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);	1322	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);	1323	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);
1059	}	1324	}
1060		1325
1061	{	1326	{
1062	UV uv;	1327	UV uv;
1063	int numtype = grok_number (start, len, &uv);	1328	int numtype = grok_number (start, len, &uv);
…		…
1072	}	1337	}
1073		1338
1074	len -= *start == '-' ? 1 : 0;	1339	len -= *start == '-' ? 1 : 0;
1075		1340
1076	// does not fit into IV or UV, try NV	1341	// does not fit into IV or UV, try NV
1077	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1342	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	1343	// fits into NV without loss of precision
1083	return newSVnv (Atof (start));	1344	return newSVnv (json_atof (start));
1084		1345
1085	// everything else fails, convert it to a string	1346	// everything else fails, convert it to a string
1086	return newSVpvn (start, dec->cur - start);	1347	return newSVpvn (start, dec->cur - start);
1087	}	1348	}
1088		1349
1089	// loss of precision here	1350	// loss of precision here
1090	return newSVnv (Atof (start));	1351	return newSVnv (json_atof (start));
1091		1352
1092	fail:	1353	fail:
1093	return 0;	1354	return 0;
1094	}	1355	}
1095		1356
…		…
1119	if (*dec->cur == ']')	1380	if (*dec->cur == ']')
1120	{	1381	{
1121	++dec->cur;	1382	++dec->cur;
1122	break;	1383	break;
1123	}	1384	}
1124		1385
1125	if (*dec->cur != ',')	1386	if (*dec->cur != ',')
1126	ERR (", or ] expected while parsing array");	1387	ERR (", or ] expected while parsing array");
1127		1388
1128	++dec->cur;	1389	++dec->cur;
1129		1390
…		…
1171	char *p = dec->cur;	1432	char *p = dec->cur;
1172	char *e = p + 24; // only try up to 24 bytes	1433	char *e = p + 24; // only try up to 24 bytes
1173		1434
1174	for (;;)	1435	for (;;)
1175	{	1436	{
1176	// the >= 0x80 is true on most architectures	1437	// the >= 0x80 is false on most architectures
1177	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')	1438	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')
1178	{	1439	{
1179	// slow path, back up and use decode_str	1440	// slow path, back up and use decode_str
1180	SV *key = decode_str (dec);	1441	SV *key = decode_str (dec);
1181	if (!key)	1442	if (!key)
…		…
1253		1514
1254	hv_iterinit (hv);	1515	hv_iterinit (hv);
1255	he = hv_iternext (hv);	1516	he = hv_iternext (hv);
1256	hv_iterinit (hv);	1517	hv_iterinit (hv);
1257		1518
1258	// the next line creates a mortal sv each time its called.	1519	// the next line creates a mortal sv each time it's called.
1259	// might want to optimise this for common cases.	1520	// might want to optimise this for common cases.
1260	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);	1521	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1261		1522
1262	if (cb)	1523	if (cb)
1263	{	1524	{
1264	dSP;	1525	dSP;
1265	int count;	1526	int count;
1266		1527
1267	ENTER; SAVETMPS; PUSHMARK (SP);	1528	ENTER; SAVETMPS;
		1529	PUSHMARK (SP);
1268	XPUSHs (HeVAL (he));	1530	XPUSHs (HeVAL (he));
		1531	sv_2mortal (sv);
1269		1532
1270	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1533	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1271		1534
1272	if (count == 1)	1535	if (count == 1)
1273	{	1536	{
1274	sv = newSVsv (POPs);	1537	sv = newSVsv (POPs);
1275	FREETMPS; LEAVE;	1538	FREETMPS; LEAVE;
1276	return sv;	1539	return sv;
1277	}	1540	}
		1541	else if (count)
		1542	croak ("filter_json_single_key_object callbacks must not return more than one scalar");
1278		1543
		1544	SvREFCNT_inc (sv);
1279	FREETMPS; LEAVE;	1545	FREETMPS; LEAVE;
1280	}	1546	}
1281	}	1547	}
1282		1548
1283	if (dec->json.cb_object)	1549	if (dec->json.cb_object)
1284	{	1550	{
1285	dSP;	1551	dSP;
1286	int count;	1552	int count;
1287		1553
1288	ENTER; SAVETMPS; PUSHMARK (SP);	1554	ENTER; SAVETMPS;
		1555	PUSHMARK (SP);
1289	XPUSHs (sv_2mortal (sv));	1556	XPUSHs (sv_2mortal (sv));
1290		1557
1291	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1558	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1292		1559
1293	if (count == 1)	1560	if (count == 1)
1294	{	1561	{
1295	sv = newSVsv (POPs);	1562	sv = newSVsv (POPs);
1296	FREETMPS; LEAVE;	1563	FREETMPS; LEAVE;
1297	return sv;	1564	return sv;
1298	}	1565	}
		1566	else if (count)
		1567	croak ("filter_json_object callbacks must not return more than one scalar");
1299		1568
1300	SvREFCNT_inc (sv);	1569	SvREFCNT_inc (sv);
1301	FREETMPS; LEAVE;	1570	FREETMPS; LEAVE;
1302	}	1571	}
1303	}	1572	}
…		…
1309	DEC_DEC_DEPTH;	1578	DEC_DEC_DEPTH;
1310	return 0;	1579	return 0;
1311	}	1580	}
1312		1581
1313	static SV *	1582	static SV *
		1583	decode_tag (dec_t *dec)
		1584	{
		1585	SV *tag = 0;
		1586	SV *val = 0;
		1587
		1588	if (!(dec->json.flags & F_ALLOW_TAGS))
		1589	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1590
		1591	++dec->cur;
		1592
		1593	decode_ws (dec);
		1594
		1595	tag = decode_sv (dec);
		1596	if (!tag)
		1597	goto fail;
		1598
		1599	if (!SvPOK (tag))
		1600	ERR ("malformed JSON string, (tag) must be a string");
		1601
		1602	decode_ws (dec);
		1603
		1604	if (*dec->cur != ')')
		1605	ERR (") expected after tag");
		1606
		1607	++dec->cur;
		1608
		1609	decode_ws (dec);
		1610
		1611	val = decode_sv (dec);
		1612	if (!val)
		1613	goto fail;
		1614
		1615	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1616	ERR ("malformed JSON string, tag value must be an array");
		1617
		1618	{
		1619	AV av = (AV )SvRV (val);
		1620	int i, len = av_len (av) + 1;
		1621	HV *stash = gv_stashsv (tag, 0);
		1622	SV *sv;
		1623
		1624	if (!stash)
		1625	ERR ("cannot decode perl-object (package does not exist)");
		1626
		1627	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1628
		1629	if (!method)
		1630	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1631
		1632	dSP;
		1633
		1634	ENTER; SAVETMPS;
		1635	PUSHMARK (SP);
		1636	EXTEND (SP, len + 2);
		1637	// we re-bless the reference to get overload and other niceties right
		1638	PUSHs (tag);
		1639	PUSHs (sv_json);
		1640
		1641	for (i = 0; i < len; ++i)
		1642	PUSHs (*av_fetch (av, i, 1));
		1643
		1644	PUTBACK;
		1645	call_sv ((SV *)GvCV (method), G_SCALAR);
		1646	SPAGAIN;
		1647
		1648	SvREFCNT_dec (tag);
		1649	SvREFCNT_dec (val);
		1650	sv = SvREFCNT_inc (POPs);
		1651
		1652	PUTBACK;
		1653
		1654	FREETMPS; LEAVE;
		1655
		1656	return sv;
		1657	}
		1658
		1659	fail:
		1660	SvREFCNT_dec (tag);
		1661	SvREFCNT_dec (val);
		1662	return 0;
		1663	}
		1664
		1665	static SV *
1314	decode_sv (dec_t *dec)	1666	decode_sv (dec_t *dec)
1315	{	1667	{
1316	// the beauty of JSON: you need exactly one character lookahead	1668	// the beauty of JSON: you need exactly one character lookahead
1317	// to parse everything.	1669	// to parse everything.
1318	switch (*dec->cur)	1670	switch (*dec->cur)
1319	{	1671	{
1320	case '"': ++dec->cur; return decode_str (dec);	1672	case '"': ++dec->cur; return decode_str (dec);
1321	case '[': ++dec->cur; return decode_av (dec);	1673	case '[': ++dec->cur; return decode_av (dec);
1322	case '{': ++dec->cur; return decode_hv (dec);	1674	case '{': ++dec->cur; return decode_hv (dec);
		1675	case '(': return decode_tag (dec);
1323		1676
1324	case '-':	1677	case '-':
1325	case '0': case '1': case '2': case '3': case '4':	1678	case '0': case '1': case '2': case '3': case '4':
1326	case '5': case '6': case '7': case '8': case '9':	1679	case '5': case '6': case '7': case '8': case '9':
1327	return decode_num (dec);	1680	return decode_num (dec);
1328		1681
		1682	case 'f':
		1683	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
		1684	{
		1685	dec->cur += 5;
		1686
		1687	if (expect_false (!dec->json.v_false))
		1688	dec->json.v_false = GET_BOOL (false);
		1689
		1690	return newSVsv (dec->json.v_false);
		1691	}
		1692	else
		1693	ERR ("'false' expected");
		1694
		1695	break;
		1696
1329	case 't':	1697	case 't':
1330	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1698	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1331	{	1699	{
1332	dec->cur += 4;	1700	dec->cur += 4;
1333	#if JSON_SLOW	1701
1334	json_true = get_sv ("JSON::XS::true", 1); SvREADONLY_on (json_true);	1702	if (expect_false (!dec->json.v_true))
1335	#endif	1703	dec->json.v_true = GET_BOOL (true);
1336	return SvREFCNT_inc (json_true);	1704
		1705	return newSVsv (dec->json.v_true);
1337	}	1706	}
1338	else	1707	else
1339	ERR ("'true' expected");	1708	ERR ("'true' expected");
1340
1341	break;
1342
1343	case 'f':
1344	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1345	{
1346	dec->cur += 5;
1347	#if JSON_SLOW
1348	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);
1349	#endif
1350	return SvREFCNT_inc (json_false);
1351	}
1352	else
1353	ERR ("'false' expected");
1354		1709
1355	break;	1710	break;
1356		1711
1357	case 'n':	1712	case 'n':
1358	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	1713	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
…		…
1364	ERR ("'null' expected");	1719	ERR ("'null' expected");
1365		1720
1366	break;	1721	break;
1367		1722
1368	default:	1723	default:
1369	ERR ("malformed JSON string, neither array, object, number, string or atom");	1724	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1370	break;	1725	break;
1371	}	1726	}
1372		1727
1373	fail:	1728	fail:
1374	return 0;	1729	return 0;
1375	}	1730	}
1376		1731
1377	static SV *	1732	static SV *
1378	decode_json (SV string, JSON json, UV *offset_return)	1733	decode_json (SV string, JSON json, STRLEN *offset_return)
1379	{	1734	{
1380	dec_t dec;	1735	dec_t dec;
1381	UV offset;
1382	SV *sv;	1736	SV *sv;
1383		1737
		1738	/* work around bugs in 5.10 where manipulating magic values
		1739	* makes perl ignore the magic in subsequent accesses.
		1740	* also make a copy of non-PV values, to get them into a clean
		1741	* state (SvPV should do that, but it's buggy, see below).
		1742	*
		1743	* SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
		1744	* as reported by Reini Urban.
		1745	*/
1384	SvGETMAGIC (string);	1746	/SvGETMAGIC (string);/
		1747	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
		1748	string = sv_2mortal (newSVsv (string));
		1749
1385	SvUPGRADE (string, SVt_PV);	1750	SvUPGRADE (string, SVt_PV);
1386		1751
1387	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))	1752	/* work around a bug in perl 5.10, which causes SvCUR to fail an
		1753	* assertion with -DDEBUGGING, although SvCUR is documented to
		1754	* return the xpv_cur field which certainly exists after upgrading.
		1755	* according to nicholas clark, calling SvPOK fixes this.
		1756	* But it doesn't fix it, so try another workaround, call SvPV_nolen
		1757	* and hope for the best.
		1758	* Damnit, SvPV_nolen still trips over yet another assertion. This
		1759	* assertion business is seriously broken, try yet another workaround
		1760	* for the broken -DDEBUGGING.
		1761	*/
		1762	{
		1763	#ifdef DEBUGGING
		1764	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
		1765	#else
		1766	STRLEN offset = SvCUR (string);
		1767	#endif
		1768
		1769	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",	1770	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));	1771	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
		1772	}
1390		1773
1391	if (json->flags & F_UTF8)	1774	if (DECODE_WANTS_OCTETS (json))
1392	sv_utf8_downgrade (string, 0);	1775	sv_utf8_downgrade (string, 0);
1393	else	1776	else
1394	sv_utf8_upgrade (string);	1777	sv_utf8_upgrade (string);
1395		1778
1396	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1779	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1397		1780
1398	dec.json = *json;	1781	dec.json = *json;
1399	dec.cur = SvPVX (string);	1782	dec.cur = SvPVX (string);
1400	dec.end = SvEND (string);	1783	dec.end = SvEND (string);
1401	dec.err = 0;	1784	dec.err = 0;
1402	dec.depth = 0;	1785	dec.depth = 0;
1403	dec.maxdepth = DEC_DEPTH (dec.json.flags);
1404		1786
1405	if (dec.json.cb_object \|\| dec.json.cb_sk_object)	1787	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
1406	dec.json.flags \|= F_HOOK;	1788	dec.json.flags \|= F_HOOK;
1407		1789
1408	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1790	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
1409		1791
1410	decode_ws (&dec);	1792	decode_ws (&dec);
1411	sv = decode_sv (&dec);	1793	sv = decode_sv (&dec);
1412		1794
1413	if (!(offset_return \|\| !sv))	1795	if (offset_return)
		1796	*offset_return = dec.cur - SvPVX (string);
		1797	else if (sv)
1414	{	1798	{
1415	// check for trailing garbage	1799	// check for trailing garbage
1416	decode_ws (&dec);	1800	decode_ws (&dec);
1417		1801
1418	if (*dec.cur)	1802	if (dec.cur != dec.end)
1419	{	1803	{
1420	dec.err = "garbage after JSON object";	1804	dec.err = "garbage after JSON object";
1421	SvREFCNT_dec (sv);	1805	SvREFCNT_dec (sv);
1422	sv = 0;	1806	sv = 0;
1423	}	1807	}
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	}	1808	}
1435		1809
1436	if (!sv)	1810	if (!sv)
1437	{	1811	{
1438	SV *uni = sv_newmortal ();	1812	SV *uni = sv_newmortal ();
…		…
1444	SAVEVPTR (PL_curcop);	1818	SAVEVPTR (PL_curcop);
1445	PL_curcop = &cop;	1819	PL_curcop = &cop;
1446	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1820	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1447	LEAVE;	1821	LEAVE;
1448		1822
1449	croak ("%s, at character offset %d [\"%s\"]",	1823	croak ("%s, at character offset %d (before \"%s\")",
1450	dec.err,	1824	dec.err,
1451	(int)offset,	1825	(int)ptr_to_index (string, dec.cur),
1452	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1826	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1453	}	1827	}
1454		1828
1455	sv = sv_2mortal (sv);	1829	sv = sv_2mortal (sv);
1456		1830
1457	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1831	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)");	1832	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1459		1833
1460	return sv;	1834	return sv;
		1835	}
		1836
		1837	/////////////////////////////////////////////////////////////////////////////
		1838	// incremental parser
		1839
		1840	static void
		1841	incr_parse (JSON *self)
		1842	{
		1843	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1844
		1845	// the state machine here is a bit convoluted and could be simplified a lot
		1846	// but this would make it slower, so...
		1847
		1848	for (;;)
		1849	{
		1850	switch (self->incr_mode)
		1851	{
		1852	// reached end of a scalar, see if we are inside a nested structure or not
		1853	end_of_scalar:
		1854	self->incr_mode = INCR_M_JSON;
		1855
		1856	if (self->incr_nest) // end of a scalar inside array, object or tag
		1857	goto incr_m_json;
		1858	else // end of scalar outside structure, json text ends here
		1859	goto interrupt;
		1860
		1861	// only used for initial whitespace skipping
		1862	case INCR_M_WS:
		1863	for (;;)
		1864	{
		1865	if (*p > 0x20)
		1866	{
		1867	if (*p == '#')
		1868	{
		1869	self->incr_mode = INCR_M_C0;
		1870	goto incr_m_c;
		1871	}
		1872	else
		1873	{
		1874	self->incr_mode = INCR_M_JSON;
		1875	goto incr_m_json;
		1876	}
		1877	}
		1878	else if (!*p)
		1879	goto interrupt;
		1880
		1881	++p;
		1882	}
		1883
		1884	// skip a single char inside a string (for \\-processing)
		1885	case INCR_M_BS:
		1886	if (!*p)
		1887	goto interrupt;
		1888
		1889	++p;
		1890	self->incr_mode = INCR_M_STR;
		1891	goto incr_m_str;
		1892
		1893	// inside #-style comments
		1894	case INCR_M_C0:
		1895	case INCR_M_C1:
		1896	incr_m_c:
		1897	for (;;)
		1898	{
		1899	if (*p == '\n')
		1900	{
		1901	self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON;
		1902	break;
		1903	}
		1904	else if (!*p)
		1905	goto interrupt;
		1906
		1907	++p;
		1908	}
		1909
		1910	break;
		1911
		1912	// inside true/false/null
		1913	case INCR_M_TFN:
		1914	incr_m_tfn:
		1915	for (;;)
		1916	switch (*p++)
		1917	{
		1918	case 'r': case 'u': case 'e': // tRUE, falsE, nUll
		1919	case 'a': case 'l': case 's': // fALSe, nuLL
		1920	// allowed
		1921	break;
		1922
		1923	default:
		1924	--p;
		1925	goto end_of_scalar;
		1926	}
		1927
		1928	// inside a number
		1929	case INCR_M_NUM:
		1930	incr_m_num:
		1931	for (;;)
		1932	switch (*p++)
		1933	{
		1934	case 'e': case 'E': case '.': case '+':
		1935	case '-':
		1936	case '0': case '1': case '2': case '3': case '4':
		1937	case '5': case '6': case '7': case '8': case '9':
		1938	// allowed
		1939	break;
		1940
		1941	default:
		1942	--p;
		1943	goto end_of_scalar;
		1944	}
		1945
		1946	// inside a string
		1947	case INCR_M_STR:
		1948	incr_m_str:
		1949	for (;;)
		1950	{
		1951	if (*p == '"')
		1952	{
		1953	++p;
		1954	goto end_of_scalar;
		1955	}
		1956	else if (*p == '\\')
		1957	{
		1958	++p; // "virtually" consumes character after \
		1959
		1960	if (!*p) // if at end of string we have to switch modes
		1961	{
		1962	self->incr_mode = INCR_M_BS;
		1963	goto interrupt;
		1964	}
		1965	}
		1966	else if (!*p)
		1967	goto interrupt;
		1968
		1969	++p;
		1970	}
		1971
		1972	// after initial ws, outside string
		1973	case INCR_M_JSON:
		1974	incr_m_json:
		1975	for (;;)
		1976	{
		1977	switch (*p++)
		1978	{
		1979	case 0:
		1980	--p;
		1981	goto interrupt;
		1982
		1983	case 0x09:
		1984	case 0x0a:
		1985	case 0x0d:
		1986	case 0x20:
		1987	if (!self->incr_nest)
		1988	{
		1989	--p; // do not eat the whitespace, let the next round do it
		1990	goto interrupt;
		1991	}
		1992	break;
		1993
		1994	// the following three blocks handle scalars. this makes the parser
		1995	// more strict than required inside arrays or objects, and could
		1996	// be moved to a special case on the toplevel (except strings)
		1997	case 't':
		1998	case 'f':
		1999	case 'n':
		2000	self->incr_mode = INCR_M_TFN;
		2001	goto incr_m_tfn;
		2002
		2003	case '-':
		2004	case '0': case '1': case '2': case '3': case '4':
		2005	case '5': case '6': case '7': case '8': case '9':
		2006	self->incr_mode = INCR_M_NUM;
		2007	goto incr_m_num;
		2008
		2009	case '"':
		2010	self->incr_mode = INCR_M_STR;
		2011	goto incr_m_str;
		2012
		2013	case '[':
		2014	case '{':
		2015	case '(':
		2016	if (++self->incr_nest > self->max_depth)
		2017	croak (ERR_NESTING_EXCEEDED);
		2018	break;
		2019
		2020	case ']':
		2021	case '}':
		2022	if (--self->incr_nest <= 0)
		2023	goto interrupt;
		2024	break;
		2025
		2026	case ')':
		2027	--self->incr_nest;
		2028	break;
		2029
		2030	case '#':
		2031	self->incr_mode = INCR_M_C1;
		2032	goto incr_m_c;
		2033	}
		2034	}
		2035	}
		2036
		2037	modechange:
		2038	;
		2039	}
		2040
		2041	interrupt:
		2042	self->incr_pos = p - SvPVX (self->incr_text);
		2043	//printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D
		2044	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
1461	}	2045	}
1462		2046
1463	/////////////////////////////////////////////////////////////////////////////	2047	/////////////////////////////////////////////////////////////////////////////
1464	// XS interface functions	2048	// XS interface functions
1465		2049
…		…
1474	i >= '0' && i <= '9' ? i - '0'	2058	i >= '0' && i <= '9' ? i - '0'
1475	: i >= 'a' && i <= 'f' ? i - 'a' + 10	2059	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1476	: i >= 'A' && i <= 'F' ? i - 'A' + 10	2060	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1477	: -1;	2061	: -1;
1478		2062
1479	json_stash = gv_stashpv ("JSON::XS" , 1);	2063	json_stash = gv_stashpv ("JSON::XS" , 1);
1480	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	2064	bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
		2065	bool_false = get_bool ("Types::Serialiser::false");
		2066	bool_true = get_bool ("Types::Serialiser::true");
1481		2067
1482	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );	2068	sv_json = newSVpv ("JSON", 0);
1483	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	2069	SvREADONLY_on (sv_json);
		2070
		2071	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1484	}	2072	}
1485		2073
1486	PROTOTYPES: DISABLE	2074	PROTOTYPES: DISABLE
1487		2075
1488	void CLONE (...)	2076	void CLONE (...)
1489	CODE:	2077	CODE:
		2078	// as long as these writes are atomic, the race should not matter
		2079	// as existing threads either already use 0, or use the old value,
		2080	// which is sitll correct for the initial thread.
1490	json_stash = 0;	2081	json_stash = 0;
1491	json_boolean_stash = 0;	2082	bool_stash = 0;
		2083	bool_false = 0;
		2084	bool_true = 0;
1492		2085
1493	void new (char *klass)	2086	void new (char *klass)
1494	PPCODE:	2087	PPCODE:
1495	{	2088	{
1496	SV *pv = NEWSV (0, sizeof (JSON));	2089	SV *pv = NEWSV (0, sizeof (JSON));
1497	SvPOK_only (pv);	2090	SvPOK_only (pv);
1498	Zero (SvPVX (pv), 1, JSON);	2091	json_init ((JSON *)SvPVX (pv));
1499	((JSON *)SvPVX (pv))->flags = F_DEFAULT;
1500	XPUSHs (sv_2mortal (sv_bless (	2092	XPUSHs (sv_2mortal (sv_bless (
1501	newRV_noinc (pv),	2093	newRV_noinc (pv),
1502	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	2094	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1503	)));	2095	)));
1504	}	2096	}
		2097
		2098	void boolean_values (JSON self, SV v_false = 0, SV *v_true = 0)
		2099	PPCODE:
		2100	self->v_false = newSVsv (v_false);
		2101	self->v_true = newSVsv (v_true);
		2102	XPUSHs (ST (0));
		2103
		2104	void get_boolean_values (JSON *self)
		2105	PPCODE:
		2106	if (self->v_false && self->v_true)
		2107	{
		2108	EXTEND (SP, 2);
		2109	PUSHs (self->v_false);
		2110	PUSHs (self->v_true);
		2111	}
1505		2112
1506	void ascii (JSON *self, int enable = 1)	2113	void ascii (JSON *self, int enable = 1)
1507	ALIAS:	2114	ALIAS:
1508	ascii = F_ASCII	2115	ascii = F_ASCII
1509	latin1 = F_LATIN1	2116	latin1 = F_LATIN1
…		…
1516	allow_nonref = F_ALLOW_NONREF	2123	allow_nonref = F_ALLOW_NONREF
1517	shrink = F_SHRINK	2124	shrink = F_SHRINK
1518	allow_blessed = F_ALLOW_BLESSED	2125	allow_blessed = F_ALLOW_BLESSED
1519	convert_blessed = F_CONV_BLESSED	2126	convert_blessed = F_CONV_BLESSED
1520	relaxed = F_RELAXED	2127	relaxed = F_RELAXED
		2128	allow_unknown = F_ALLOW_UNKNOWN
		2129	allow_tags = F_ALLOW_TAGS
1521	PPCODE:	2130	PPCODE:
1522	{	2131	{
1523	if (enable)	2132	if (enable)
1524	self->flags \|= ix;	2133	self->flags \|= ix;
1525	else	2134	else
…		…
1540	get_allow_nonref = F_ALLOW_NONREF	2149	get_allow_nonref = F_ALLOW_NONREF
1541	get_shrink = F_SHRINK	2150	get_shrink = F_SHRINK
1542	get_allow_blessed = F_ALLOW_BLESSED	2151	get_allow_blessed = F_ALLOW_BLESSED
1543	get_convert_blessed = F_CONV_BLESSED	2152	get_convert_blessed = F_CONV_BLESSED
1544	get_relaxed = F_RELAXED	2153	get_relaxed = F_RELAXED
		2154	get_allow_unknown = F_ALLOW_UNKNOWN
		2155	get_allow_tags = F_ALLOW_TAGS
1545	PPCODE:	2156	PPCODE:
1546	XPUSHs (boolSV (self->flags & ix));	2157	XPUSHs (boolSV (self->flags & ix));
1547		2158
1548	void max_depth (JSON *self, UV max_depth = 0x80000000UL)	2159	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1549	PPCODE:	2160	PPCODE:
1550	{	2161	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));	2162	XPUSHs (ST (0));
1561	}
1562		2163
1563	U32 get_max_depth (JSON *self)	2164	U32 get_max_depth (JSON *self)
1564	CODE:	2165	CODE:
1565	RETVAL = DEC_DEPTH (self->flags);	2166	RETVAL = self->max_depth;
1566	OUTPUT:	2167	OUTPUT:
1567	RETVAL	2168	RETVAL
1568		2169
1569	void max_size (JSON *self, UV max_size = 0)	2170	void max_size (JSON *self, U32 max_size = 0)
1570	PPCODE:	2171	PPCODE:
1571	{	2172	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));	2173	XPUSHs (ST (0));
1583	}
1584		2174
1585	int get_max_size (JSON *self)	2175	int get_max_size (JSON *self)
1586	CODE:	2176	CODE:
1587	RETVAL = DEC_SIZE (self->flags);	2177	RETVAL = self->max_size;
1588	OUTPUT:	2178	OUTPUT:
1589	RETVAL	2179	RETVAL
1590		2180
1591	void filter_json_object (JSON self, SV cb = &PL_sv_undef)	2181	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1592	PPCODE:	2182	PPCODE:
…		…
1598	}	2188	}
1599		2189
1600	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2190	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1601	PPCODE:	2191	PPCODE:
1602	{	2192	{
1603	if (!self->cb_sk_object)	2193	if (!self->cb_sk_object)
1604	self->cb_sk_object = newHV ();	2194	self->cb_sk_object = newHV ();
1605		2195
1606	if (SvOK (cb))	2196	if (SvOK (cb))
1607	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2197	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1608	else	2198	else
…		…
1619	XPUSHs (ST (0));	2209	XPUSHs (ST (0));
1620	}	2210	}
1621		2211
1622	void encode (JSON self, SV scalar)	2212	void encode (JSON self, SV scalar)
1623	PPCODE:	2213	PPCODE:
1624	XPUSHs (encode_json (scalar, self));	2214	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2215	XPUSHs (scalar);
1625		2216
1626	void decode (JSON self, SV jsonstr)	2217	void decode (JSON self, SV jsonstr)
1627	PPCODE:	2218	PPCODE:
1628	XPUSHs (decode_json (jsonstr, self, 0));	2219	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2220	XPUSHs (jsonstr);
1629		2221
1630	void decode_prefix (JSON self, SV jsonstr)	2222	void decode_prefix (JSON self, SV jsonstr)
1631	PPCODE:	2223	PPCODE:
1632	{	2224	{
1633	UV offset;	2225	SV *sv;
		2226	STRLEN offset;
		2227	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1634	EXTEND (SP, 2);	2228	EXTEND (SP, 2);
1635	PUSHs (decode_json (jsonstr, self, &offset));	2229	PUSHs (sv);
1636	PUSHs (sv_2mortal (newSVuv (offset)));	2230	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
		2231	}
		2232
		2233	void incr_parse (JSON self, SV jsonstr = 0)
		2234	PPCODE:
		2235	{
		2236	if (!self->incr_text)
		2237	self->incr_text = newSVpvn ("", 0);
		2238
		2239	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2240	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2241	if (DECODE_WANTS_OCTETS (self))
		2242	{
		2243	if (self->incr_pos)
		2244	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2245	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2246
		2247	sv_utf8_downgrade (self->incr_text, 0);
		2248	}
		2249	else
		2250	{
		2251	sv_utf8_upgrade (self->incr_text);
		2252
		2253	if (self->incr_pos)
		2254	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2255	- (U8 *)SvPVX (self->incr_text);
		2256	}
		2257
		2258	// append data, if any
		2259	if (jsonstr)
		2260	{
		2261	/* make sure both strings have same encoding */
		2262	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
		2263	if (SvUTF8 (jsonstr))
		2264	sv_utf8_downgrade (jsonstr, 0);
		2265	else
		2266	sv_utf8_upgrade (jsonstr);
		2267
		2268	/* and then just blindly append */
		2269	{
		2270	STRLEN len;
		2271	const char *str = SvPV (jsonstr, len);
		2272	STRLEN cur = SvCUR (self->incr_text);
		2273
		2274	if (SvLEN (self->incr_text) - cur <= len)
		2275	json_sv_grow (self->incr_text, cur, len);
		2276
		2277	Move (str, SvEND (self->incr_text), len, char);
		2278	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
		2279	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
		2280	}
		2281	}
		2282
		2283	if (GIMME_V != G_VOID)
		2284	do
		2285	{
		2286	SV *sv;
		2287	STRLEN offset;
		2288
		2289	if (!INCR_DONE (self))
		2290	{
		2291	incr_parse (self);
		2292
		2293	if (self->incr_pos > self->max_size && self->max_size)
		2294	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		2295	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
		2296
		2297	if (!INCR_DONE (self))
		2298	{
		2299	// as an optimisation, do not accumulate white space in the incr buffer
		2300	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2301	{
		2302	self->incr_pos = 0;
		2303	SvCUR_set (self->incr_text, 0);
		2304	}
		2305
		2306	break;
		2307	}
		2308	}
		2309
		2310	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2311	XPUSHs (sv);
		2312
		2313	self->incr_pos -= offset;
		2314	self->incr_nest = 0;
		2315	self->incr_mode = 0;
		2316
		2317	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
		2318	}
		2319	while (GIMME_V == G_ARRAY);
		2320	}
		2321
		2322	SV incr_text (JSON self)
		2323	ATTRS: lvalue
		2324	CODE:
		2325	{
		2326	if (self->incr_pos)
		2327	croak ("incr_text can not be called when the incremental parser already started parsing");
		2328
		2329	RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef;
		2330	}
		2331	OUTPUT:
		2332	RETVAL
		2333
		2334	void incr_skip (JSON *self)
		2335	CODE:
		2336	{
		2337	if (self->incr_pos)
		2338	{
		2339	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos);
		2340	self->incr_pos = 0;
		2341	self->incr_nest = 0;
		2342	self->incr_mode = 0;
		2343	}
		2344	}
		2345
		2346	void incr_reset (JSON *self)
		2347	CODE:
		2348	{
		2349	SvREFCNT_dec (self->incr_text);
		2350	self->incr_text = 0;
		2351	self->incr_pos = 0;
		2352	self->incr_nest = 0;
		2353	self->incr_mode = 0;
1637	}	2354	}
1638		2355
1639	void DESTROY (JSON *self)	2356	void DESTROY (JSON *self)
1640	CODE:	2357	CODE:
		2358	SvREFCNT_dec (self->v_false);
		2359	SvREFCNT_dec (self->v_true);
1641	SvREFCNT_dec (self->cb_sk_object);	2360	SvREFCNT_dec (self->cb_sk_object);
1642	SvREFCNT_dec (self->cb_object);	2361	SvREFCNT_dec (self->cb_object);
		2362	SvREFCNT_dec (self->incr_text);
1643		2363
1644	PROTOTYPES: ENABLE	2364	PROTOTYPES: ENABLE
1645		2365
1646	void encode_json (SV *scalar)	2366	void encode_json (SV *scalar)
1647	ALIAS:
1648	to_json_ = 0
1649	encode_json = F_UTF8
1650	PPCODE:	2367	PPCODE:
1651	{	2368	{
1652	JSON json = { F_DEFAULT \| ix };	2369	JSON json;
1653	XPUSHs (encode_json (scalar, &json));	2370	json_init (&json);
		2371	json.flags \|= F_UTF8;
		2372	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2373	XPUSHs (scalar);
1654	}	2374	}
1655		2375
1656	void decode_json (SV *jsonstr)	2376	void decode_json (SV *jsonstr)
1657	ALIAS:
1658	from_json_ = 0
1659	decode_json = F_UTF8
1660	PPCODE:	2377	PPCODE:
1661	{	2378	{
1662	JSON json = { F_DEFAULT \| ix };	2379	JSON json;
1663	XPUSHs (decode_json (jsonstr, &json, 0));	2380	json_init (&json);
		2381	json.flags \|= F_UTF8;
		2382	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2383	XPUSHs (jsonstr);
1664	}	2384	}
1665		2385

Diff Legend

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+Removed lines
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+Changed lines
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+Changed lines

Comparing JSON-XS/XS.xs (file contents): Revision 1.76 by root, Thu Mar 20 00:56:37 2008 UTC vs. Revision 1.136 by root, Thu Nov 15 22:35:35 2018 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 1.136 by root, Thu Nov 15 22:35:35 2018 UTC