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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.83 by root, Wed Mar 26 22:54:38 2008 UTC vs.
Revision 1.135 by root, Thu Nov 15 20:49:12 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;
82		98
83	enum {	99	enum {
84	INCR_M_WS = 0, // initial whitespace skipping, must be 0	100	INCR_M_WS = 0, // initial whitespace skipping, must be 0
85	INCR_M_STR, // inside string	101	INCR_M_STR, // inside string
86	INCR_M_BS, // inside backslash	102	INCR_M_BS, // inside backslash
		103	INCR_M_C0, // inside comment in initial whitespace sequence
		104	INCR_M_C1, // inside comment in other places
87	INCR_M_JSON // outside anything, count nesting	105	INCR_M_JSON // outside anything, count nesting
88	};	106	};
89		107
90	#define INCR_DONE(json) (!(json)->incr_nest && (json)->incr_mode == INCR_M_JSON)	108	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)
91		109
92	typedef struct {	110	typedef struct {
93	U32 flags;	111	U32 flags;
		112	U32 max_depth;
		113	STRLEN max_size;
		114
94	SV *cb_object;	115	SV *cb_object;
95	HV *cb_sk_object;	116	HV *cb_sk_object;
96		117
97	// for the incremental parser	118	// for the incremental parser
98	SV *incr_text; // the source text so far	119	SV *incr_text; // the source text so far
99	STRLEN incr_pos; // the current offset into the text	120	STRLEN incr_pos; // the current offset into the text
100	int incr_nest; // {[]}-nesting level	121	int incr_nest; // {[]}-nesting level
101	int incr_mode;	122	unsigned char incr_mode;
		123
		124	SV v_false, v_true;
102	} JSON;	125	} JSON;
		126
		127	INLINE void
		128	json_init (JSON *json)
		129	{
		130	static const JSON init = { F_ALLOW_NONREF, 512 };
		131
		132	*json = init;
		133	}
103		134
104	/////////////////////////////////////////////////////////////////////////////	135	/////////////////////////////////////////////////////////////////////////////
105	// utility functions	136	// utility functions
106		137
107	INLINE SV *	138	INLINE SV *
…		…
117		148
118	INLINE void	149	INLINE void
119	shrink (SV *sv)	150	shrink (SV *sv)
120	{	151	{
121	sv_utf8_downgrade (sv, 1);	152	sv_utf8_downgrade (sv, 1);
		153
122	if (SvLEN (sv) > SvCUR (sv) + 1)	154	if (SvLEN (sv) > SvCUR (sv) + 1)
123	{	155	{
124	#ifdef SvPV_shrink_to_cur	156	#ifdef SvPV_shrink_to_cur
125	SvPV_shrink_to_cur (sv);	157	SvPV_shrink_to_cur (sv);
126	#elif defined (SvPV_renew)	158	#elif defined (SvPV_renew)
127	SvPV_renew (sv, SvCUR (sv) + 1);	159	SvPV_renew (sv, SvCUR (sv) + 1);
128	#endif	160	#endif
129	}	161	}
130	}	162	}
131		163
		164	/* adds two STRLENs together, slow, and with paranoia */
		165	STRLEN
		166	strlen_sum (STRLEN l1, STRLEN l2)
		167	{
		168	size_t sum = l1 + l2;
		169
		170	if (sum < (size_t)l2 \|\| sum != (size_t)(STRLEN)sum)
		171	croak ("JSON::XS: string size overflow");
		172
		173	return sum;
		174	}
		175
		176	/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */
		177	static char *
		178	json_sv_grow (SV *sv, size_t len1, size_t len2)
		179	{
		180	len1 = strlen_sum (len1, len2);
		181	len1 = strlen_sum (len1, len1 >> 1);
		182
		183	if (len1 > 4096 - 24)
		184	len1 = (len1 \| 4095) - 24;
		185
		186	return SvGROW (sv, len1);
		187	}
		188
132	// decode an utf-8 character and return it, or (UV)-1 in	189	// decode a utf-8 character and return it, or (UV)-1 in
133	// case of an error.	190	// case of an error.
134	// we special-case "safe" characters from U+80 .. U+7FF,	191	// we special-case "safe" characters from U+80 .. U+7FF,
135	// but use the very good perl function to parse anything else.	192	// but use the very good perl function to parse anything else.
136	// note that we never call this function for a ascii codepoints	193	// note that we never call this function for a ascii codepoints
137	INLINE UV	194	INLINE UV
…		…
170	*s++ = 0x80 \| ( ch & 0x3f);	227	*s++ = 0x80 \| ( ch & 0x3f);
171		228
172	return s;	229	return s;
173	}	230	}
174		231
		232	// convert offset pointer to character index, sv must be string
		233	static STRLEN
		234	ptr_to_index (SV sv, char offset)
		235	{
		236	return SvUTF8 (sv)
		237	? utf8_distance (offset, SvPVX (sv))
		238	: offset - SvPVX (sv);
		239	}
		240
		241	/////////////////////////////////////////////////////////////////////////////
		242	// fp hell
		243
		244	// scan a group of digits, and a trailing exponent
		245	static void
		246	json_atof_scan1 (const char s, NV accum, int *expo, int postdp, int maxdepth)
		247	{
		248	UV uaccum = 0;
		249	int eaccum = 0;
		250
		251	// if we recurse too deep, skip all remaining digits
		252	// to avoid a stack overflow attack
		253	if (expect_false (--maxdepth <= 0))
		254	while (((U8)*s - '0') < 10)
		255	++s;
		256
		257	for (;;)
		258	{
		259	U8 dig = (U8)*s - '0';
		260
		261	if (expect_false (dig >= 10))
		262	{
		263	if (dig == (U8)((U8)'.' - (U8)'0'))
		264	{
		265	++s;
		266	json_atof_scan1 (s, accum, expo, 1, maxdepth);
		267	}
		268	else if ((dig \| ' ') == 'e' - '0')
		269	{
		270	int exp2 = 0;
		271	int neg = 0;
		272
		273	++s;
		274
		275	if (*s == '-')
		276	{
		277	++s;
		278	neg = 1;
		279	}
		280	else if (*s == '+')
		281	++s;
		282
		283	while ((dig = (U8)*s - '0') < 10)
		284	exp2 = exp2 * 10 + *s++ - '0';
		285
		286	*expo += neg ? -exp2 : exp2;
		287	}
		288
		289	break;
		290	}
		291
		292	++s;
		293
		294	uaccum = uaccum * 10 + dig;
		295	++eaccum;
		296
		297	// if we have too many digits, then recurse for more
		298	// we actually do this for rather few digits
		299	if (uaccum >= (UV_MAX - 9) / 10)
		300	{
		301	if (postdp) *expo -= eaccum;
		302	json_atof_scan1 (s, accum, expo, postdp, maxdepth);
		303	if (postdp) *expo += eaccum;
		304
		305	break;
		306	}
		307	}
		308
		309	// this relies greatly on the quality of the pow ()
		310	// implementation of the platform, but a good
		311	// implementation is hard to beat.
		312	// (IEEE 754 conformant ones are required to be exact)
		313	if (postdp) *expo -= eaccum;
		314	accum += uaccum Perl_pow (10., *expo);
		315	*expo += eaccum;
		316	}
		317
		318	static NV
		319	json_atof (const char *s)
		320	{
		321	NV accum = 0.;
		322	int expo = 0;
		323	int neg = 0;
		324
		325	if (*s == '-')
		326	{
		327	++s;
		328	neg = 1;
		329	}
		330
		331	// a recursion depth of ten gives us >>500 bits
		332	json_atof_scan1 (s, &accum, &expo, 0, 10);
		333
		334	return neg ? -accum : accum;
		335	}
		336
		337	// target of scalar reference is bool? -1 == nope, 0 == false, 1 == true
		338	static int
		339	ref_bool_type (SV *sv)
		340	{
		341	svtype svt = SvTYPE (sv);
		342
		343	if (svt < SVt_PVAV)
		344	{
		345	STRLEN len = 0;
		346	char *pv = svt ? SvPV (sv, len) : 0;
		347
		348	if (len == 1)
		349	if (*pv == '1')
		350	return 1;
		351	else if (*pv == '0')
		352	return 0;
		353	}
		354
		355	return -1;
		356	}
		357
		358	// returns whether scalar is not a reference in the sense of allow_nonref
		359	static int
		360	json_nonref (SV *scalar)
		361	{
		362	if (!SvROK (scalar))
		363	return 1;
		364
		365	scalar = SvRV (scalar);
		366
		367	if (SvTYPE (scalar) >= SVt_PVMG)
		368	{
		369	if (SvSTASH (scalar) == bool_stash)
		370	return 1;
		371
		372	if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0)
		373	return 1;
		374	}
		375
		376	return 0;
		377	}
		378
175	/////////////////////////////////////////////////////////////////////////////	379	/////////////////////////////////////////////////////////////////////////////
176	// encoder	380	// encoder
177		381
178	// structure used for encoding JSON	382	// structure used for encoding JSON
179	typedef struct	383	typedef struct
…		…
181	char *cur; // SvPVX (sv) + current output position	385	char *cur; // SvPVX (sv) + current output position
182	char *end; // SvEND (sv)	386	char *end; // SvEND (sv)
183	SV *sv; // result scalar	387	SV *sv; // result scalar
184	JSON json;	388	JSON json;
185	U32 indent; // indentation level	389	U32 indent; // indentation level
186	U32 maxdepth; // max. indentation/recursion level
187	UV limit; // escape character values >= this value when encoding	390	UV limit; // escape character values >= this value when encoding
188	} enc_t;	391	} enc_t;
189		392
190	INLINE void	393	INLINE void
191	need (enc_t *enc, STRLEN len)	394	need (enc_t *enc, STRLEN len)
192	{	395	{
193	if (expect_false (enc->cur + len >= enc->end))	396	if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
194	{	397	{
195	STRLEN cur = enc->cur - SvPVX (enc->sv);	398	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
196	SvGROW (enc->sv, cur + len + 1);	399	char *buf = json_sv_grow (enc->sv, cur, len);
197	enc->cur = SvPVX (enc->sv) + cur;	400	enc->cur = buf + cur;
198	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	401	enc->end = buf + SvLEN (enc->sv) - 1;
199	}	402	}
200	}	403	}
201		404
202	INLINE void	405	INLINE void
203	encode_ch (enc_t *enc, char ch)	406	encode_ch (enc_t *enc, char ch)
…		…
219		422
220	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case	423	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
221	{	424	{
222	if (expect_false (ch == '"')) // but with slow exceptions	425	if (expect_false (ch == '"')) // but with slow exceptions
223	{	426	{
224	need (enc, len += 1);	427	need (enc, len + 1);
225	*enc->cur++ = '\\';	428	*enc->cur++ = '\\';
226	*enc->cur++ = '"';	429	*enc->cur++ = '"';
227	}	430	}
228	else if (expect_false (ch == '\\'))	431	else if (expect_false (ch == '\\'))
229	{	432	{
230	need (enc, len += 1);	433	need (enc, len + 1);
231	*enc->cur++ = '\\';	434	*enc->cur++ = '\\';
232	*enc->cur++ = '\\';	435	*enc->cur++ = '\\';
233	}	436	}
234	else	437	else
235	*enc->cur++ = ch;	438	*enc->cur++ = ch;
…		…
238	}	441	}
239	else	442	else
240	{	443	{
241	switch (ch)	444	switch (ch)
242	{	445	{
243	case '\010': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;	446	case '\010': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;
244	case '\011': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 't'; ++str; break;	447	case '\011': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 't'; ++str; break;
245	case '\012': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;	448	case '\012': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;
246	case '\014': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;	449	case '\014': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;
247	case '\015': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;	450	case '\015': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;
248		451
249	default:	452	default:
250	{	453	{
251	STRLEN clen;	454	STRLEN clen;
252	UV uch;	455	UV uch;
…		…
268	if (uch >= 0x10000UL)	471	if (uch >= 0x10000UL)
269	{	472	{
270	if (uch >= 0x110000UL)	473	if (uch >= 0x110000UL)
271	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);	474	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
272		475
273	need (enc, len += 11);	476	need (enc, len + 11);
274	sprintf (enc->cur, "\\u%04x\\u%04x",	477	sprintf (enc->cur, "\\u%04x\\u%04x",
275	(int)((uch - 0x10000) / 0x400 + 0xD800),	478	(int)((uch - 0x10000) / 0x400 + 0xD800),
276	(int)((uch - 0x10000) % 0x400 + 0xDC00));	479	(int)((uch - 0x10000) % 0x400 + 0xDC00));
277	enc->cur += 12;	480	enc->cur += 12;
278	}	481	}
279	else	482	else
280	{	483	{
281	static char hexdigit [16] = "0123456789abcdef";
282	need (enc, len += 5);	484	need (enc, len + 5);
283	*enc->cur++ = '\\';	485	*enc->cur++ = '\\';
284	*enc->cur++ = 'u';	486	*enc->cur++ = 'u';
285	*enc->cur++ = hexdigit [ uch >> 12 ];	487	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
286	*enc->cur++ = hexdigit [(uch >> 8) & 15];	488	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
287	*enc->cur++ = hexdigit [(uch >> 4) & 15];	489	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
288	*enc->cur++ = hexdigit [(uch >> 0) & 15];	490	*enc->cur++ = PL_hexdigit [(uch >> 0) & 15];
289	}	491	}
290		492
291	str += clen;	493	str += clen;
292	}	494	}
293	else if (enc->json.flags & F_LATIN1)	495	else if (enc->json.flags & F_LATIN1)
…		…
295	*enc->cur++ = uch;	497	*enc->cur++ = uch;
296	str += clen;	498	str += clen;
297	}	499	}
298	else if (is_utf8)	500	else if (is_utf8)
299	{	501	{
300	need (enc, len += clen);	502	need (enc, len + clen);
301	do	503	do
302	{	504	{
303	enc->cur++ = str++;	505	enc->cur++ = str++;
304	}	506	}
305	while (--clen);	507	while (--clen);
306	}	508	}
307	else	509	else
308	{	510	{
309	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed	511	need (enc, len + UTF8_MAXBYTES - 1); // never more than 11 bytes needed
310	enc->cur = encode_utf8 (enc->cur, uch);	512	enc->cur = encode_utf8 (enc->cur, uch);
311	++str;	513	++str;
312	}	514	}
313	}	515	}
314	}	516	}
…		…
364	static void	566	static void
365	encode_av (enc_t enc, AV av)	567	encode_av (enc_t enc, AV av)
366	{	568	{
367	int i, len = av_len (av);	569	int i, len = av_len (av);
368		570
369	if (enc->indent >= enc->maxdepth)	571	if (enc->indent >= enc->json.max_depth)
370	croak ("data structure too deep (hit recursion limit)");	572	croak (ERR_NESTING_EXCEEDED);
371		573
372	encode_ch (enc, '[');	574	encode_ch (enc, '[');
373		575
374	if (len >= 0)	576	if (len >= 0)
375	{	577	{
376	encode_nl (enc); ++enc->indent;	578	encode_nl (enc); ++enc->indent;
377		579
378	for (i = 0; i <= len; ++i)	580	for (i = 0; i <= len; ++i)
…		…
390	encode_comma (enc);	592	encode_comma (enc);
391	}	593	}
392		594
393	encode_nl (enc); --enc->indent; encode_indent (enc);	595	encode_nl (enc); --enc->indent; encode_indent (enc);
394	}	596	}
395		597
396	encode_ch (enc, ']');	598	encode_ch (enc, ']');
397	}	599	}
398		600
399	static void	601	static void
400	encode_hk (enc_t enc, HE he)	602	encode_hk (enc_t enc, HE he)
…		…
404	if (HeKLEN (he) == HEf_SVKEY)	606	if (HeKLEN (he) == HEf_SVKEY)
405	{	607	{
406	SV *sv = HeSVKEY (he);	608	SV *sv = HeSVKEY (he);
407	STRLEN len;	609	STRLEN len;
408	char *str;	610	char *str;
409		611
410	SvGETMAGIC (sv);	612	SvGETMAGIC (sv);
411	str = SvPV (sv, len);	613	str = SvPV (sv, len);
412		614
413	encode_str (enc, str, len, SvUTF8 (sv));	615	encode_str (enc, str, len, SvUTF8 (sv));
414	}	616	}
…		…
450	static void	652	static void
451	encode_hv (enc_t enc, HV hv)	653	encode_hv (enc_t enc, HV hv)
452	{	654	{
453	HE *he;	655	HE *he;
454		656
455	if (enc->indent >= enc->maxdepth)	657	if (enc->indent >= enc->json.max_depth)
456	croak ("data structure too deep (hit recursion limit)");	658	croak (ERR_NESTING_EXCEEDED);
457		659
458	encode_ch (enc, '{');	660	encode_ch (enc, '{');
459		661
460	// for canonical output we have to sort by keys first	662	// for canonical output we have to sort by keys first
461	// actually, this is mostly due to the stupid so-called	663	// actually, this is mostly due to the stupid so-called
462	// security workaround added somewhere in 5.8.x.	664	// security workaround added somewhere in 5.8.x
463	// that randomises hash orderings	665	// that randomises hash orderings
464	if (enc->json.flags & F_CANONICAL)	666	if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv))
465	{	667	{
466	int count = hv_iterinit (hv);	668	int count = hv_iterinit (hv);
467		669
468	if (SvMAGICAL (hv))	670	if (SvMAGICAL (hv))
469	{	671	{
…		…
480	}	682	}
481		683
482	if (count)	684	if (count)
483	{	685	{
484	int i, fast = 1;	686	int i, fast = 1;
485	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	687	HE *hes_stack [STACK_HES];
486	HE *hes = _alloca (count sizeof (HE));	688	HE **hes = hes_stack;
487	#else	689
488	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	690	// allocate larger arrays on the heap
489	#endif	691	if (count > STACK_HES)
		692	{
		693	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		694	hes = (HE **)SvPVX (sv);
		695	}
490		696
491	i = 0;	697	i = 0;
492	while ((he = hv_iternext (hv)))	698	while ((he = hv_iternext (hv)))
493	{	699	{
494	hes [i++] = he;	700	hes [i++] = he;
…		…
563	// encode objects, arrays and special \0=false and \1=true values.	769	// encode objects, arrays and special \0=false and \1=true values.
564	static void	770	static void
565	encode_rv (enc_t enc, SV sv)	771	encode_rv (enc_t enc, SV sv)
566	{	772	{
567	svtype svt;	773	svtype svt;
		774	GV *method;
568		775
569	SvGETMAGIC (sv);	776	SvGETMAGIC (sv);
570	svt = SvTYPE (sv);	777	svt = SvTYPE (sv);
571		778
572	if (expect_false (SvOBJECT (sv)))	779	if (expect_false (SvOBJECT (sv)))
573	{	780	{
574	HV *stash = !JSON_SLOW \|\| json_boolean_stash	781	HV *stash = SvSTASH (sv);
575	? json_boolean_stash
576	: gv_stashpv ("JSON::XS::Boolean", 1);
577		782
578	if (SvSTASH (sv) == stash)	783	if (stash == bool_stash)
579	{	784	{
580	if (SvIV (sv))
581	encode_str (enc, "true", 4, 0);	785	if (SvIV (sv)) encode_str (enc, "true" , 4, 0);
582	else
583	encode_str (enc, "false", 5, 0);	786	else encode_str (enc, "false", 5, 0);
584	}	787	}
		788	else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
		789	{
		790	int count;
		791	dSP;
		792
		793	ENTER; SAVETMPS;
		794	PUSHMARK (SP);
		795	EXTEND (SP, 2);
		796	// we re-bless the reference to get overload and other niceties right
		797	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		798	PUSHs (sv_json);
		799
		800	PUTBACK;
		801	count = call_sv ((SV *)GvCV (method), G_ARRAY);
		802	SPAGAIN;
		803
		804	// catch this surprisingly common error
		805	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		806	croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		807
		808	encode_ch (enc, '(');
		809	encode_ch (enc, '"');
		810	encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
		811	encode_ch (enc, '"');
		812	encode_ch (enc, ')');
		813	encode_ch (enc, '[');
		814
		815	if (count)
		816	{
		817	int i;
		818
		819	for (i = 0; i < count - 1; ++i)
		820	{
		821	encode_sv (enc, SP[i + 1 - count]);
		822	encode_ch (enc, ',');
		823	}
		824
		825	encode_sv (enc, TOPs);
		826	SP -= count;
		827	}
		828
		829	encode_ch (enc, ']');
		830
		831	FREETMPS; LEAVE;
		832	}
		833	else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
		834	{
		835	dSP;
		836
		837	ENTER; SAVETMPS;
		838	PUSHMARK (SP);
		839	// we re-bless the reference to get overload and other niceties right
		840	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		841
		842	// calling with G_SCALAR ensures that we always get a 1 return value
		843	PUTBACK;
		844	call_sv ((SV *)GvCV (method), G_SCALAR);
		845	SPAGAIN;
		846
		847	// catch this surprisingly common error
		848	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		849	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		850
		851	sv = POPs;
		852	PUTBACK;
		853
		854	encode_sv (enc, sv);
		855
		856	FREETMPS; LEAVE;
		857	}
		858	else if (enc->json.flags & F_ALLOW_BLESSED)
		859	encode_str (enc, "null", 4, 0);
585	else	860	else
586	{
587	#if 0
588	if (0 && sv_derived_from (rv, "JSON::Literal"))
589	{
590	// not yet
591	}
592	#endif
593	if (enc->json.flags & F_CONV_BLESSED)
594	{
595	// we re-bless the reference to get overload and other niceties right
596	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
597
598	if (to_json)
599	{
600	dSP;
601
602	ENTER; SAVETMPS; PUSHMARK (SP);
603	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
604
605	// calling with G_SCALAR ensures that we always get a 1 return value
606	PUTBACK;
607	call_sv ((SV *)GvCV (to_json), G_SCALAR);
608	SPAGAIN;
609
610	// catch this surprisingly common error
611	if (SvROK (TOPs) && SvRV (TOPs) == sv)
612	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
613
614	sv = POPs;
615	PUTBACK;
616
617	encode_sv (enc, sv);
618
619	FREETMPS; LEAVE;
620	}
621	else if (enc->json.flags & F_ALLOW_BLESSED)
622	encode_str (enc, "null", 4, 0);
623	else
624	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
625	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
626	}
627	else if (enc->json.flags & F_ALLOW_BLESSED)
628	encode_str (enc, "null", 4, 0);
629	else
630	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	861	croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
631	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	862	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
632	}
633	}	863	}
634	else if (svt == SVt_PVHV)	864	else if (svt == SVt_PVHV)
635	encode_hv (enc, (HV *)sv);	865	encode_hv (enc, (HV *)sv);
636	else if (svt == SVt_PVAV)	866	else if (svt == SVt_PVAV)
637	encode_av (enc, (AV *)sv);	867	encode_av (enc, (AV *)sv);
638	else if (svt < SVt_PVAV)	868	else if (svt < SVt_PVAV)
639	{	869	{
640	STRLEN len = 0;	870	int bool_type = ref_bool_type (sv);
641	char *pv = svt ? SvPV (sv, len) : 0;
642		871
643	if (len == 1 && *pv == '1')	872	if (bool_type == 1)
644	encode_str (enc, "true", 4, 0);	873	encode_str (enc, "true", 4, 0);
645	else if (len == 1 && *pv == '0')	874	else if (bool_type == 0)
646	encode_str (enc, "false", 5, 0);	875	encode_str (enc, "false", 5, 0);
		876	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		877	encode_str (enc, "null", 4, 0);
647	else	878	else
648	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	879	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
649	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	880	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
650	}	881	}
		882	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		883	encode_str (enc, "null", 4, 0);
651	else	884	else
652	croak ("encountered %s, but JSON can only represent references to arrays or hashes",	885	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
653	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	886	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
654	}	887	}
655		888
…		…
709	}	942	}
710	else	943	else
711	{	944	{
712	// large integer, use the (rather slow) snprintf way.	945	// large integer, use the (rather slow) snprintf way.
713	need (enc, IVUV_MAXCHARS);	946	need (enc, IVUV_MAXCHARS);
714	enc->cur +=	947	enc->cur +=
715	SvIsUV(sv)	948	SvIsUV(sv)
716	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	949	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
717	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	950	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
718	}	951	}
719	}	952	}
720	else if (SvROK (sv))	953	else if (SvROK (sv))
721	encode_rv (enc, SvRV (sv));	954	encode_rv (enc, SvRV (sv));
722	else if (!SvOK (sv))	955	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
723	encode_str (enc, "null", 4, 0);	956	encode_str (enc, "null", 4, 0);
724	else	957	else
725	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	958	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
726	SvPV_nolen (sv), SvFLAGS (sv));	959	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
727	}	960	}
728		961
729	static SV *	962	static SV *
730	encode_json (SV scalar, JSON json)	963	encode_json (SV scalar, JSON json)
731	{	964	{
732	enc_t enc;	965	enc_t enc;
733		966
734	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	967	if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
735	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	968	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
736		969
737	enc.json = *json;	970	enc.json = *json;
738	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	971	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
739	enc.cur = SvPVX (enc.sv);	972	enc.cur = SvPVX (enc.sv);
740	enc.end = SvEND (enc.sv);	973	enc.end = SvEND (enc.sv);
741	enc.indent = 0;	974	enc.indent = 0;
742	enc.maxdepth = DEC_DEPTH (enc.json.flags);
743	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL	975	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL
744	: enc.json.flags & F_LATIN1 ? 0x000100UL	976	: enc.json.flags & F_LATIN1 ? 0x000100UL
745	: 0x110000UL;	977	: 0x110000UL;
746		978
747	SvPOK_only (enc.sv);	979	SvPOK_only (enc.sv);
748	encode_sv (&enc, scalar);	980	encode_sv (&enc, scalar);
		981	encode_nl (&enc);
749		982
750	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	983	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
751	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	984	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
752		985
753	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	986	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
…		…
814	if (*dec->cur != ch) \	1047	if (*dec->cur != ch) \
815	ERR (# ch " expected"); \	1048	ERR (# ch " expected"); \
816	++dec->cur; \	1049	++dec->cur; \
817	SE	1050	SE
818		1051
819	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")	1052	#define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED)
820	#define DEC_DEC_DEPTH --dec->depth	1053	#define DEC_DEC_DEPTH --dec->depth
821		1054
822	static SV decode_sv (dec_t dec);	1055	static SV decode_sv (dec_t dec);
823		1056
824	static signed char decode_hexdigit[256];	1057	static signed char decode_hexdigit[256];
…		…
933	else if (expect_true (ch >= 0x20 && ch < 0x80))	1166	else if (expect_true (ch >= 0x20 && ch < 0x80))
934	*cur++ = ch;	1167	*cur++ = ch;
935	else if (ch >= 0x80)	1168	else if (ch >= 0x80)
936	{	1169	{
937	STRLEN clen;	1170	STRLEN clen;
938	UV uch;
939		1171
940	--dec_cur;	1172	--dec_cur;
941		1173
942	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);	1174	decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
943	if (clen == (STRLEN)-1)	1175	if (clen == (STRLEN)-1)
944	ERR ("malformed UTF-8 character in JSON string");	1176	ERR ("malformed UTF-8 character in JSON string");
945		1177
946	do	1178	do
947	cur++ = dec_cur++;	1179	cur++ = dec_cur++;
948	while (--clen);	1180	while (--clen);
949		1181
950	utf8 = 1;	1182	utf8 = 1;
951	}	1183	}
		1184	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1185	*cur++ = ch;
952	else	1186	else
953	{	1187	{
954	--dec_cur;	1188	--dec_cur;
955		1189
956	if (!ch)	1190	if (!ch)
…		…
964	{	1198	{
965	STRLEN len = cur - buf;	1199	STRLEN len = cur - buf;
966		1200
967	if (sv)	1201	if (sv)
968	{	1202	{
969	SvGROW (sv, SvCUR (sv) + len + 1);	1203	STRLEN cur = SvCUR (sv);
		1204
		1205	if (SvLEN (sv) - cur <= len)
		1206	json_sv_grow (sv, cur, len);
		1207
970	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1208	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
971	SvCUR_set (sv, SvCUR (sv) + len);	1209	SvCUR_set (sv, SvCUR (sv) + len);
972	}	1210	}
973	else	1211	else
974	sv = newSVpvn (buf, len);	1212	sv = newSVpvn (buf, len);
…		…
1065		1303
1066	// special case the rather common 1..5-digit-int case	1304	// special case the rather common 1..5-digit-int case
1067	if (*start == '-')	1305	if (*start == '-')
1068	switch (len)	1306	switch (len)
1069	{	1307	{
1070	case 2: return newSViv (-( start [1] - '0' * 1));	1308	case 2: return newSViv (-(IV)( start [1] - '0' * 1));
1071	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	1309	case 3: return newSViv (-(IV)( start [1] * 10 + start [2] - '0' * 11));
1072	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));	1310	case 4: return newSViv (-(IV)( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
1073	case 5: return newSViv (-( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));	1311	case 5: return newSViv (-(IV)( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
1074	case 6: return newSViv (-(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));	1312	case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));
1075	}	1313	}
1076	else	1314	else
1077	switch (len)	1315	switch (len)
1078	{	1316	{
1079	case 1: return newSViv ( start [0] - '0' * 1);	1317	case 1: return newSViv ( start [0] - '0' * 1);
1080	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	1318	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
1081	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);	1319	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
1082	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);	1320	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
1083	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);	1321	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);
1084	}	1322	}
1085		1323
1086	{	1324	{
1087	UV uv;	1325	UV uv;
1088	int numtype = grok_number (start, len, &uv);	1326	int numtype = grok_number (start, len, &uv);
…		…
1097	}	1335	}
1098		1336
1099	len -= *start == '-' ? 1 : 0;	1337	len -= *start == '-' ? 1 : 0;
1100		1338
1101	// does not fit into IV or UV, try NV	1339	// does not fit into IV or UV, try NV
1102	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1340	if (len <= NV_DIG)
1103	#if defined (LDBL_DIG)
1104	\|\| (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
1105	#endif
1106	)
1107	// fits into NV without loss of precision	1341	// fits into NV without loss of precision
1108	return newSVnv (Atof (start));	1342	return newSVnv (json_atof (start));
1109		1343
1110	// everything else fails, convert it to a string	1344	// everything else fails, convert it to a string
1111	return newSVpvn (start, dec->cur - start);	1345	return newSVpvn (start, dec->cur - start);
1112	}	1346	}
1113		1347
1114	// loss of precision here	1348	// loss of precision here
1115	return newSVnv (Atof (start));	1349	return newSVnv (json_atof (start));
1116		1350
1117	fail:	1351	fail:
1118	return 0;	1352	return 0;
1119	}	1353	}
1120		1354
…		…
1144	if (*dec->cur == ']')	1378	if (*dec->cur == ']')
1145	{	1379	{
1146	++dec->cur;	1380	++dec->cur;
1147	break;	1381	break;
1148	}	1382	}
1149		1383
1150	if (*dec->cur != ',')	1384	if (*dec->cur != ',')
1151	ERR (", or ] expected while parsing array");	1385	ERR (", or ] expected while parsing array");
1152		1386
1153	++dec->cur;	1387	++dec->cur;
1154		1388
…		…
1278		1512
1279	hv_iterinit (hv);	1513	hv_iterinit (hv);
1280	he = hv_iternext (hv);	1514	he = hv_iternext (hv);
1281	hv_iterinit (hv);	1515	hv_iterinit (hv);
1282		1516
1283	// the next line creates a mortal sv each time its called.	1517	// the next line creates a mortal sv each time it's called.
1284	// might want to optimise this for common cases.	1518	// might want to optimise this for common cases.
1285	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);	1519	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1286		1520
1287	if (cb)	1521	if (cb)
1288	{	1522	{
1289	dSP;	1523	dSP;
1290	int count;	1524	int count;
1291		1525
1292	ENTER; SAVETMPS; PUSHMARK (SP);	1526	ENTER; SAVETMPS;
		1527	PUSHMARK (SP);
1293	XPUSHs (HeVAL (he));	1528	XPUSHs (HeVAL (he));
		1529	sv_2mortal (sv);
1294		1530
1295	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1531	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1296		1532
1297	if (count == 1)	1533	if (count == 1)
1298	{	1534	{
1299	sv = newSVsv (POPs);	1535	sv = newSVsv (POPs);
1300	FREETMPS; LEAVE;	1536	FREETMPS; LEAVE;
1301	return sv;	1537	return sv;
1302	}	1538	}
		1539	else if (count)
		1540	croak ("filter_json_single_key_object callbacks must not return more than one scalar");
1303		1541
		1542	SvREFCNT_inc (sv);
1304	FREETMPS; LEAVE;	1543	FREETMPS; LEAVE;
1305	}	1544	}
1306	}	1545	}
1307		1546
1308	if (dec->json.cb_object)	1547	if (dec->json.cb_object)
1309	{	1548	{
1310	dSP;	1549	dSP;
1311	int count;	1550	int count;
1312		1551
1313	ENTER; SAVETMPS; PUSHMARK (SP);	1552	ENTER; SAVETMPS;
		1553	PUSHMARK (SP);
1314	XPUSHs (sv_2mortal (sv));	1554	XPUSHs (sv_2mortal (sv));
1315		1555
1316	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1556	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1317		1557
1318	if (count == 1)	1558	if (count == 1)
1319	{	1559	{
1320	sv = newSVsv (POPs);	1560	sv = newSVsv (POPs);
1321	FREETMPS; LEAVE;	1561	FREETMPS; LEAVE;
1322	return sv;	1562	return sv;
1323	}	1563	}
		1564	else if (count)
		1565	croak ("filter_json_object callbacks must not return more than one scalar");
1324		1566
1325	SvREFCNT_inc (sv);	1567	SvREFCNT_inc (sv);
1326	FREETMPS; LEAVE;	1568	FREETMPS; LEAVE;
1327	}	1569	}
1328	}	1570	}
…		…
1334	DEC_DEC_DEPTH;	1576	DEC_DEC_DEPTH;
1335	return 0;	1577	return 0;
1336	}	1578	}
1337		1579
1338	static SV *	1580	static SV *
		1581	decode_tag (dec_t *dec)
		1582	{
		1583	SV *tag = 0;
		1584	SV *val = 0;
		1585
		1586	if (!(dec->json.flags & F_ALLOW_TAGS))
		1587	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1588
		1589	++dec->cur;
		1590
		1591	decode_ws (dec);
		1592
		1593	tag = decode_sv (dec);
		1594	if (!tag)
		1595	goto fail;
		1596
		1597	if (!SvPOK (tag))
		1598	ERR ("malformed JSON string, (tag) must be a string");
		1599
		1600	decode_ws (dec);
		1601
		1602	if (*dec->cur != ')')
		1603	ERR (") expected after tag");
		1604
		1605	++dec->cur;
		1606
		1607	decode_ws (dec);
		1608
		1609	val = decode_sv (dec);
		1610	if (!val)
		1611	goto fail;
		1612
		1613	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1614	ERR ("malformed JSON string, tag value must be an array");
		1615
		1616	{
		1617	AV av = (AV )SvRV (val);
		1618	int i, len = av_len (av) + 1;
		1619	HV *stash = gv_stashsv (tag, 0);
		1620	SV *sv;
		1621
		1622	if (!stash)
		1623	ERR ("cannot decode perl-object (package does not exist)");
		1624
		1625	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1626
		1627	if (!method)
		1628	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1629
		1630	dSP;
		1631
		1632	ENTER; SAVETMPS;
		1633	PUSHMARK (SP);
		1634	EXTEND (SP, len + 2);
		1635	// we re-bless the reference to get overload and other niceties right
		1636	PUSHs (tag);
		1637	PUSHs (sv_json);
		1638
		1639	for (i = 0; i < len; ++i)
		1640	PUSHs (*av_fetch (av, i, 1));
		1641
		1642	PUTBACK;
		1643	call_sv ((SV *)GvCV (method), G_SCALAR);
		1644	SPAGAIN;
		1645
		1646	SvREFCNT_dec (tag);
		1647	SvREFCNT_dec (val);
		1648	sv = SvREFCNT_inc (POPs);
		1649
		1650	PUTBACK;
		1651
		1652	FREETMPS; LEAVE;
		1653
		1654	return sv;
		1655	}
		1656
		1657	fail:
		1658	SvREFCNT_dec (tag);
		1659	SvREFCNT_dec (val);
		1660	return 0;
		1661	}
		1662
		1663	static SV *
1339	decode_sv (dec_t *dec)	1664	decode_sv (dec_t *dec)
1340	{	1665	{
1341	// the beauty of JSON: you need exactly one character lookahead	1666	// the beauty of JSON: you need exactly one character lookahead
1342	// to parse everything.	1667	// to parse everything.
1343	switch (*dec->cur)	1668	switch (*dec->cur)
1344	{	1669	{
1345	case '"': ++dec->cur; return decode_str (dec);	1670	case '"': ++dec->cur; return decode_str (dec);
1346	case '[': ++dec->cur; return decode_av (dec);	1671	case '[': ++dec->cur; return decode_av (dec);
1347	case '{': ++dec->cur; return decode_hv (dec);	1672	case '{': ++dec->cur; return decode_hv (dec);
		1673	case '(': return decode_tag (dec);
1348		1674
1349	case '-':	1675	case '-':
1350	case '0': case '1': case '2': case '3': case '4':	1676	case '0': case '1': case '2': case '3': case '4':
1351	case '5': case '6': case '7': case '8': case '9':	1677	case '5': case '6': case '7': case '8': case '9':
1352	return decode_num (dec);	1678	return decode_num (dec);
1353		1679
		1680	case 'f':
		1681	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
		1682	{
		1683	dec->cur += 5;
		1684
		1685	if (expect_false (!dec->json.v_false))
		1686	dec->json.v_false = GET_BOOL (false);
		1687
		1688	return newSVsv (dec->json.v_false);
		1689	}
		1690	else
		1691	ERR ("'false' expected");
		1692
		1693	break;
		1694
1354	case 't':	1695	case 't':
1355	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1696	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1356	{	1697	{
1357	dec->cur += 4;	1698	dec->cur += 4;
1358	#if JSON_SLOW	1699
1359	json_true = get_bool ("JSON::XS::true");	1700	if (expect_false (!dec->json.v_true))
1360	#endif	1701	dec->json.v_true = GET_BOOL (true);
		1702
1361	return newSVsv (json_true);	1703	return newSVsv (dec->json.v_true);
1362	}	1704	}
1363	else	1705	else
1364	ERR ("'true' expected");	1706	ERR ("'true' expected");
1365
1366	break;
1367
1368	case 'f':
1369	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1370	{
1371	dec->cur += 5;
1372	#if JSON_SLOW
1373	json_false = get_bool ("JSON::XS::false");
1374	#endif
1375	return newSVsv (json_false);
1376	}
1377	else
1378	ERR ("'false' expected");
1379		1707
1380	break;	1708	break;
1381		1709
1382	case 'n':	1710	case 'n':
1383	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	1711	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
…		…
1389	ERR ("'null' expected");	1717	ERR ("'null' expected");
1390		1718
1391	break;	1719	break;
1392		1720
1393	default:	1721	default:
1394	ERR ("malformed JSON string, neither array, object, number, string or atom");	1722	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1395	break;	1723	break;
1396	}	1724	}
1397		1725
1398	fail:	1726	fail:
1399	return 0;	1727	return 0;
…		…
1401		1729
1402	static SV *	1730	static SV *
1403	decode_json (SV string, JSON json, STRLEN *offset_return)	1731	decode_json (SV string, JSON json, STRLEN *offset_return)
1404	{	1732	{
1405	dec_t dec;	1733	dec_t dec;
1406	STRLEN offset;
1407	SV *sv;	1734	SV *sv;
1408		1735
		1736	/* work around bugs in 5.10 where manipulating magic values
		1737	* makes perl ignore the magic in subsequent accesses.
		1738	* also make a copy of non-PV values, to get them into a clean
		1739	* state (SvPV should do that, but it's buggy, see below).
		1740	*
		1741	* SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
		1742	* as reported by Reini Urban.
		1743	*/
1409	SvGETMAGIC (string);	1744	/SvGETMAGIC (string);/
		1745	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
		1746	string = sv_2mortal (newSVsv (string));
		1747
1410	SvUPGRADE (string, SVt_PV);	1748	SvUPGRADE (string, SVt_PV);
1411		1749
1412	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))	1750	/* work around a bug in perl 5.10, which causes SvCUR to fail an
		1751	* assertion with -DDEBUGGING, although SvCUR is documented to
		1752	* return the xpv_cur field which certainly exists after upgrading.
		1753	* according to nicholas clark, calling SvPOK fixes this.
		1754	* But it doesn't fix it, so try another workaround, call SvPV_nolen
		1755	* and hope for the best.
		1756	* Damnit, SvPV_nolen still trips over yet another assertion. This
		1757	* assertion business is seriously broken, try yet another workaround
		1758	* for the broken -DDEBUGGING.
		1759	*/
		1760	{
		1761	#ifdef DEBUGGING
		1762	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
		1763	#else
		1764	STRLEN offset = SvCUR (string);
		1765	#endif
		1766
		1767	if (offset > json->max_size && json->max_size)
1413	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1768	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1414	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));	1769	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
		1770	}
1415		1771
1416	if (json->flags & F_UTF8)	1772	if (DECODE_WANTS_OCTETS (json))
1417	sv_utf8_downgrade (string, 0);	1773	sv_utf8_downgrade (string, 0);
1418	else	1774	else
1419	sv_utf8_upgrade (string);	1775	sv_utf8_upgrade (string);
1420		1776
1421	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1777	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1422		1778
1423	dec.json = *json;	1779	dec.json = *json;
1424	dec.cur = SvPVX (string);	1780	dec.cur = SvPVX (string);
1425	dec.end = SvEND (string);	1781	dec.end = SvEND (string);
1426	dec.err = 0;	1782	dec.err = 0;
1427	dec.depth = 0;	1783	dec.depth = 0;
1428	dec.maxdepth = DEC_DEPTH (dec.json.flags);
1429		1784
1430	if (dec.json.cb_object \|\| dec.json.cb_sk_object)	1785	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
1431	dec.json.flags \|= F_HOOK;	1786	dec.json.flags \|= F_HOOK;
1432		1787
1433	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1788	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
1434		1789
1435	decode_ws (&dec);	1790	decode_ws (&dec);
1436	sv = decode_sv (&dec);	1791	sv = decode_sv (&dec);
1437		1792
1438	if (!(offset_return \|\| !sv))	1793	if (offset_return)
		1794	*offset_return = dec.cur - SvPVX (string);
		1795	else if (sv)
1439	{	1796	{
1440	// check for trailing garbage	1797	// check for trailing garbage
1441	decode_ws (&dec);	1798	decode_ws (&dec);
1442		1799
1443	if (*dec.cur)	1800	if (dec.cur != dec.end)
1444	{	1801	{
1445	dec.err = "garbage after JSON object";	1802	dec.err = "garbage after JSON object";
1446	SvREFCNT_dec (sv);	1803	SvREFCNT_dec (sv);
1447	sv = 0;	1804	sv = 0;
1448	}	1805	}
1449	}
1450
1451	if (offset_return \|\| !sv)
1452	{
1453	offset = dec.json.flags & F_UTF8
1454	? dec.cur - SvPVX (string)
1455	: utf8_distance (dec.cur, SvPVX (string));
1456
1457	if (offset_return)
1458	*offset_return = offset;
1459	}	1806	}
1460		1807
1461	if (!sv)	1808	if (!sv)
1462	{	1809	{
1463	SV *uni = sv_newmortal ();	1810	SV *uni = sv_newmortal ();
…		…
1469	SAVEVPTR (PL_curcop);	1816	SAVEVPTR (PL_curcop);
1470	PL_curcop = &cop;	1817	PL_curcop = &cop;
1471	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1818	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1472	LEAVE;	1819	LEAVE;
1473		1820
1474	croak ("%s, at character offset %d [\"%s\"]",	1821	croak ("%s, at character offset %d (before \"%s\")",
1475	dec.err,	1822	dec.err,
1476	(int)offset,	1823	(int)ptr_to_index (string, dec.cur),
1477	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1824	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1478	}	1825	}
1479		1826
1480	sv = sv_2mortal (sv);	1827	sv = sv_2mortal (sv);
1481		1828
1482	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1829	if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1483	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1830	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1484		1831
1485	return sv;	1832	return sv;
1486	}	1833	}
1487		1834
…		…
1490		1837
1491	static void	1838	static void
1492	incr_parse (JSON *self)	1839	incr_parse (JSON *self)
1493	{	1840	{
1494	const char *p = SvPVX (self->incr_text) + self->incr_pos;	1841	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1842
		1843	// the state machine here is a bit convoluted and could be simplified a lot
		1844	// but this would make it slower, so...
1495		1845
1496	for (;;)	1846	for (;;)
1497	{	1847	{
1498	//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	1848	//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
1499	switch (self->incr_mode)	1849	switch (self->incr_mode)
1500	{	1850	{
1501	// only used for intiial whitespace skipping	1851	// only used for initial whitespace skipping
1502	case INCR_M_WS:	1852	case INCR_M_WS:
1503	for (;;)	1853	for (;;)
1504	{	1854	{
1505	if (*p > 0x20)	1855	if (*p > 0x20)
1506	{	1856	{
		1857	if (*p == '#')
		1858	{
		1859	self->incr_mode = INCR_M_C0;
		1860	goto incr_m_c;
		1861	}
		1862	else
		1863	{
1507	self->incr_mode = INCR_M_JSON;	1864	self->incr_mode = INCR_M_JSON;
1508	goto incr_m_json;	1865	goto incr_m_json;
		1866	}
1509	}	1867	}
1510	else if (!*p)	1868	else if (!*p)
1511	goto interrupt;	1869	goto interrupt;
1512		1870
1513	++p;	1871	++p;
…		…
1519	goto interrupt;	1877	goto interrupt;
1520		1878
1521	++p;	1879	++p;
1522	self->incr_mode = INCR_M_STR;	1880	self->incr_mode = INCR_M_STR;
1523	goto incr_m_str;	1881	goto incr_m_str;
		1882
		1883	// inside #-style comments
		1884	case INCR_M_C0:
		1885	case INCR_M_C1:
		1886	incr_m_c:
		1887	for (;;)
		1888	{
		1889	if (*p == '\n')
		1890	{
		1891	self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON;
		1892	break;
		1893	}
		1894	else if (!*p)
		1895	goto interrupt;
		1896
		1897	++p;
		1898	}
		1899
		1900	break;
1524		1901
1525	// inside a string	1902	// inside a string
1526	case INCR_M_STR:	1903	case INCR_M_STR:
1527	incr_m_str:	1904	incr_m_str:
1528	for (;;)	1905	for (;;)
…		…
1579	self->incr_mode = INCR_M_STR;	1956	self->incr_mode = INCR_M_STR;
1580	goto incr_m_str;	1957	goto incr_m_str;
1581		1958
1582	case '[':	1959	case '[':
1583	case '{':	1960	case '{':
		1961	case '(':
1584	++self->incr_nest;	1962	if (++self->incr_nest > self->max_depth)
		1963	croak (ERR_NESTING_EXCEEDED);
1585	break;	1964	break;
1586		1965
1587	case ']':	1966	case ']':
1588	case '}':	1967	case '}':
1589	if (!--self->incr_nest)	1968	if (--self->incr_nest <= 0)
1590	goto interrupt;	1969	goto interrupt;
		1970	break;
		1971
		1972	case ')':
		1973	--self->incr_nest;
		1974	break;
		1975
		1976	case '#':
		1977	self->incr_mode = INCR_M_C1;
		1978	goto incr_m_c;
1591	}	1979	}
1592	}	1980	}
1593	}	1981	}
1594		1982
1595	modechange:	1983	modechange:
1596	;	1984	;
1597	}	1985	}
1598		1986
1599	interrupt:	1987	interrupt:
1600	self->incr_pos = p - SvPVX (self->incr_text);	1988	self->incr_pos = p - SvPVX (self->incr_text);
		1989	//printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D
1601	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D	1990	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
1602	}	1991	}
1603		1992
1604	/////////////////////////////////////////////////////////////////////////////	1993	/////////////////////////////////////////////////////////////////////////////
1605	// XS interface functions	1994	// XS interface functions
…		…
1615	i >= '0' && i <= '9' ? i - '0'	2004	i >= '0' && i <= '9' ? i - '0'
1616	: i >= 'a' && i <= 'f' ? i - 'a' + 10	2005	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1617	: i >= 'A' && i <= 'F' ? i - 'A' + 10	2006	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1618	: -1;	2007	: -1;
1619		2008
1620	json_stash = gv_stashpv ("JSON::XS" , 1);	2009	json_stash = gv_stashpv ("JSON::XS" , 1);
1621	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	2010	bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1622
1623	json_true = get_bool ("JSON::XS::true");
1624	json_false = get_bool ("JSON::XS::false");	2011	bool_false = get_bool ("Types::Serialiser::false");
		2012	bool_true = get_bool ("Types::Serialiser::true");
		2013
		2014	sv_json = newSVpv ("JSON", 0);
		2015	SvREADONLY_on (sv_json);
		2016
		2017	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1625	}	2018	}
1626		2019
1627	PROTOTYPES: DISABLE	2020	PROTOTYPES: DISABLE
1628		2021
1629	void CLONE (...)	2022	void CLONE (...)
1630	CODE:	2023	CODE:
		2024	// as long as these writes are atomic, the race should not matter
		2025	// as existing threads either already use 0, or use the old value,
		2026	// which is sitll correct for the initial thread.
1631	json_stash = 0;	2027	json_stash = 0;
1632	json_boolean_stash = 0;	2028	bool_stash = 0;
		2029	bool_false = 0;
		2030	bool_true = 0;
1633		2031
1634	void new (char *klass)	2032	void new (char *klass)
1635	PPCODE:	2033	PPCODE:
1636	{	2034	{
1637	SV *pv = NEWSV (0, sizeof (JSON));	2035	SV *pv = NEWSV (0, sizeof (JSON));
1638	SvPOK_only (pv);	2036	SvPOK_only (pv);
1639	Zero (SvPVX (pv), 1, JSON);	2037	json_init ((JSON *)SvPVX (pv));
1640	((JSON *)SvPVX (pv))->flags = F_DEFAULT;
1641	XPUSHs (sv_2mortal (sv_bless (	2038	XPUSHs (sv_2mortal (sv_bless (
1642	newRV_noinc (pv),	2039	newRV_noinc (pv),
1643	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	2040	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1644	)));	2041	)));
1645	}	2042	}
		2043
		2044	void boolean_values (JSON self, SV v_false = 0, SV *v_true = 0)
		2045	PPCODE:
		2046	self->v_false = newSVsv (v_false);
		2047	self->v_true = newSVsv (v_true);
		2048	XPUSHs (ST (0));
		2049
		2050	void get_boolean_values (JSON *self)
		2051	PPCODE:
		2052	if (self->v_false && self->v_true)
		2053	{
		2054	EXTEND (SP, 2);
		2055	PUSHs (self->v_false);
		2056	PUSHs (self->v_true);
		2057	}
1646		2058
1647	void ascii (JSON *self, int enable = 1)	2059	void ascii (JSON *self, int enable = 1)
1648	ALIAS:	2060	ALIAS:
1649	ascii = F_ASCII	2061	ascii = F_ASCII
1650	latin1 = F_LATIN1	2062	latin1 = F_LATIN1
…		…
1657	allow_nonref = F_ALLOW_NONREF	2069	allow_nonref = F_ALLOW_NONREF
1658	shrink = F_SHRINK	2070	shrink = F_SHRINK
1659	allow_blessed = F_ALLOW_BLESSED	2071	allow_blessed = F_ALLOW_BLESSED
1660	convert_blessed = F_CONV_BLESSED	2072	convert_blessed = F_CONV_BLESSED
1661	relaxed = F_RELAXED	2073	relaxed = F_RELAXED
		2074	allow_unknown = F_ALLOW_UNKNOWN
		2075	allow_tags = F_ALLOW_TAGS
1662	PPCODE:	2076	PPCODE:
1663	{	2077	{
1664	if (enable)	2078	if (enable)
1665	self->flags \|= ix;	2079	self->flags \|= ix;
1666	else	2080	else
…		…
1681	get_allow_nonref = F_ALLOW_NONREF	2095	get_allow_nonref = F_ALLOW_NONREF
1682	get_shrink = F_SHRINK	2096	get_shrink = F_SHRINK
1683	get_allow_blessed = F_ALLOW_BLESSED	2097	get_allow_blessed = F_ALLOW_BLESSED
1684	get_convert_blessed = F_CONV_BLESSED	2098	get_convert_blessed = F_CONV_BLESSED
1685	get_relaxed = F_RELAXED	2099	get_relaxed = F_RELAXED
		2100	get_allow_unknown = F_ALLOW_UNKNOWN
		2101	get_allow_tags = F_ALLOW_TAGS
1686	PPCODE:	2102	PPCODE:
1687	XPUSHs (boolSV (self->flags & ix));	2103	XPUSHs (boolSV (self->flags & ix));
1688		2104
1689	void max_depth (JSON *self, UV max_depth = 0x80000000UL)	2105	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1690	PPCODE:	2106	PPCODE:
1691	{	2107	self->max_depth = max_depth;
1692	UV log2 = 0;
1693
1694	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1695
1696	while ((1UL << log2) < max_depth)
1697	++log2;
1698
1699	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1700
1701	XPUSHs (ST (0));	2108	XPUSHs (ST (0));
1702	}
1703		2109
1704	U32 get_max_depth (JSON *self)	2110	U32 get_max_depth (JSON *self)
1705	CODE:	2111	CODE:
1706	RETVAL = DEC_DEPTH (self->flags);	2112	RETVAL = self->max_depth;
1707	OUTPUT:	2113	OUTPUT:
1708	RETVAL	2114	RETVAL
1709		2115
1710	void max_size (JSON *self, UV max_size = 0)	2116	void max_size (JSON *self, U32 max_size = 0)
1711	PPCODE:	2117	PPCODE:
1712	{	2118	self->max_size = max_size;
1713	UV log2 = 0;
1714
1715	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
1716	if (max_size == 1) max_size = 2;
1717
1718	while ((1UL << log2) < max_size)
1719	++log2;
1720
1721	self->flags = self->flags & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
1722
1723	XPUSHs (ST (0));	2119	XPUSHs (ST (0));
1724	}
1725		2120
1726	int get_max_size (JSON *self)	2121	int get_max_size (JSON *self)
1727	CODE:	2122	CODE:
1728	RETVAL = DEC_SIZE (self->flags);	2123	RETVAL = self->max_size;
1729	OUTPUT:	2124	OUTPUT:
1730	RETVAL	2125	RETVAL
1731		2126
1732	void filter_json_object (JSON self, SV cb = &PL_sv_undef)	2127	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1733	PPCODE:	2128	PPCODE:
…		…
1739	}	2134	}
1740		2135
1741	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2136	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1742	PPCODE:	2137	PPCODE:
1743	{	2138	{
1744	if (!self->cb_sk_object)	2139	if (!self->cb_sk_object)
1745	self->cb_sk_object = newHV ();	2140	self->cb_sk_object = newHV ();
1746		2141
1747	if (SvOK (cb))	2142	if (SvOK (cb))
1748	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2143	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1749	else	2144	else
…		…
1760	XPUSHs (ST (0));	2155	XPUSHs (ST (0));
1761	}	2156	}
1762		2157
1763	void encode (JSON self, SV scalar)	2158	void encode (JSON self, SV scalar)
1764	PPCODE:	2159	PPCODE:
1765	XPUSHs (encode_json (scalar, self));	2160	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2161	XPUSHs (scalar);
1766		2162
1767	void decode (JSON self, SV jsonstr)	2163	void decode (JSON self, SV jsonstr)
1768	PPCODE:	2164	PPCODE:
1769	XPUSHs (decode_json (jsonstr, self, 0));	2165	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2166	XPUSHs (jsonstr);
1770		2167
1771	void decode_prefix (JSON self, SV jsonstr)	2168	void decode_prefix (JSON self, SV jsonstr)
1772	PPCODE:	2169	PPCODE:
1773	{	2170	{
		2171	SV *sv;
1774	STRLEN offset;	2172	STRLEN offset;
		2173	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1775	EXTEND (SP, 2);	2174	EXTEND (SP, 2);
1776	PUSHs (decode_json (jsonstr, self, &offset));	2175	PUSHs (sv);
1777	PUSHs (sv_2mortal (newSVuv (offset)));	2176	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
1778	}	2177	}
1779		2178
1780	void incr_parse (JSON self, SV jsonstr = 0)	2179	void incr_parse (JSON self, SV jsonstr = 0)
1781	PPCODE:	2180	PPCODE:
1782	{	2181	{
1783	if (!self->incr_text)	2182	if (!self->incr_text)
1784	self->incr_text = newSVpvn ("", 0);	2183	self->incr_text = newSVpvn ("", 0);
		2184
		2185	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2186	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2187	if (DECODE_WANTS_OCTETS (self))
		2188	{
		2189	if (self->incr_pos)
		2190	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2191	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2192
		2193	sv_utf8_downgrade (self->incr_text, 0);
		2194	}
		2195	else
		2196	{
		2197	sv_utf8_upgrade (self->incr_text);
		2198
		2199	if (self->incr_pos)
		2200	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2201	- (U8 *)SvPVX (self->incr_text);
		2202	}
1785		2203
1786	// append data, if any	2204	// append data, if any
1787	if (jsonstr)	2205	if (jsonstr)
1788	{	2206	{
		2207	/* make sure both strings have same encoding */
1789	if (SvUTF8 (jsonstr) && !SvUTF8 (self->incr_text))	2208	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
		2209	if (SvUTF8 (jsonstr))
		2210	sv_utf8_downgrade (jsonstr, 0);
1790	{	2211	else
1791	/* utf-8-ness differs, need to upgrade */
1792	sv_utf8_upgrade (self->incr_text);	2212	sv_utf8_upgrade (jsonstr);
1793		2213
1794	if (self->incr_pos)	2214	/* and then just blindly append */
1795	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
1796	- (U8 *)SvPVX (self->incr_text);
1797	}
1798
1799	{	2215	{
1800	STRLEN len;	2216	STRLEN len;
1801	const char *str = SvPV (jsonstr, len);	2217	const char *str = SvPV (jsonstr, len);
1802	SvGROW (self->incr_text, SvCUR (self->incr_text) + len + 1);	2218	STRLEN cur = SvCUR (self->incr_text);
		2219
		2220	if (SvLEN (self->incr_text) - cur <= len)
		2221	json_sv_grow (self->incr_text, cur, len);
		2222
1803	Move (str, SvEND (self->incr_text), len, char);	2223	Move (str, SvEND (self->incr_text), len, char);
1804	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);	2224	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
1805	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there	2225	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1806	}	2226	}
1807	}	2227	}
1808		2228
1809	if (GIMME_V != G_VOID)	2229	if (GIMME_V != G_VOID)
1810	do	2230	do
1811	{	2231	{
		2232	SV *sv;
1812	STRLEN offset;	2233	STRLEN offset;
1813		2234
1814	if (!INCR_DONE (self))	2235	if (!INCR_DONE (self))
1815	{	2236	{
1816	incr_parse (self);	2237	incr_parse (self);
		2238
		2239	if (self->incr_pos > self->max_size && self->max_size)
		2240	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		2241	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
		2242
1817	if (!INCR_DONE (self))	2243	if (!INCR_DONE (self))
		2244	{
		2245	// as an optimisation, do not accumulate white space in the incr buffer
		2246	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2247	{
		2248	self->incr_pos = 0;
		2249	SvCUR_set (self->incr_text, 0);
		2250	}
		2251
1818	break;	2252	break;
		2253	}
1819	}	2254	}
1820		2255
1821	XPUSHs (decode_json (self->incr_text, self, &offset));	2256	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2257	XPUSHs (sv);
1822		2258
1823	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + offset);
1824	self->incr_pos -= offset;	2259	self->incr_pos -= offset;
1825	self->incr_nest = 0;	2260	self->incr_nest = 0;
1826	self->incr_mode = 0;	2261	self->incr_mode = 0;
		2262
		2263	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
1827	}	2264	}
1828	while (GIMME_V == G_ARRAY);	2265	while (GIMME_V == G_ARRAY);
1829	}	2266	}
1830		2267
1831	SV incr_text (JSON self)	2268	SV incr_text (JSON self)
…		…
1850	self->incr_nest = 0;	2287	self->incr_nest = 0;
1851	self->incr_mode = 0;	2288	self->incr_mode = 0;
1852	}	2289	}
1853	}	2290	}
1854		2291
		2292	void incr_reset (JSON *self)
		2293	CODE:
		2294	{
		2295	SvREFCNT_dec (self->incr_text);
		2296	self->incr_text = 0;
		2297	self->incr_pos = 0;
		2298	self->incr_nest = 0;
		2299	self->incr_mode = 0;
		2300	}
		2301
1855	void DESTROY (JSON *self)	2302	void DESTROY (JSON *self)
1856	CODE:	2303	CODE:
		2304	SvREFCNT_dec (self->v_false);
		2305	SvREFCNT_dec (self->v_true);
1857	SvREFCNT_dec (self->cb_sk_object);	2306	SvREFCNT_dec (self->cb_sk_object);
1858	SvREFCNT_dec (self->cb_object);	2307	SvREFCNT_dec (self->cb_object);
1859	SvREFCNT_dec (self->incr_text);	2308	SvREFCNT_dec (self->incr_text);
1860		2309
1861	PROTOTYPES: ENABLE	2310	PROTOTYPES: ENABLE
1862		2311
1863	void encode_json (SV *scalar)	2312	void encode_json (SV *scalar)
1864	ALIAS:
1865	to_json_ = 0
1866	encode_json = F_UTF8
1867	PPCODE:	2313	PPCODE:
1868	{	2314	{
1869	JSON json = { F_DEFAULT \| ix };	2315	JSON json;
1870	XPUSHs (encode_json (scalar, &json));	2316	json_init (&json);
		2317	json.flags \|= F_UTF8;
		2318	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2319	XPUSHs (scalar);
1871	}	2320	}
1872		2321
1873	void decode_json (SV *jsonstr)	2322	void decode_json (SV *jsonstr)
1874	ALIAS:
1875	from_json_ = 0
1876	decode_json = F_UTF8
1877	PPCODE:	2323	PPCODE:
1878	{	2324	{
1879	JSON json = { F_DEFAULT \| ix };	2325	JSON json;
1880	XPUSHs (decode_json (jsonstr, &json, 0));	2326	json_init (&json);
		2327	json.flags \|= F_UTF8;
		2328	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2329	XPUSHs (jsonstr);
1881	}	2330	}
1882		2331
1883

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+Removed lines
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+Changed lines
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Comparing JSON-XS/XS.xs (file contents): Revision 1.83 by root, Wed Mar 26 22:54:38 2008 UTC vs. Revision 1.135 by root, Thu Nov 15 20:49:12 2018 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.83 by root, Wed Mar 26 22:54:38 2008 UTC vs.
Revision 1.135 by root, Thu Nov 15 20:49:12 2018 UTC