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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.103 by root, Wed Jan 6 08:01:39 2010 UTC vs.
Revision 1.138 by root, Wed Mar 6 07:21:17 2019 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	// guarantees, 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
		21	#endif
		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
20	#endif	32	#endif
21		33
22	// three extra for rounding, sign, and end of string	34	// three extra for rounding, sign, and end of string
23	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)	35	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)
24		36
…		…
33	#define F_SHRINK 0x00000200UL	45	#define F_SHRINK 0x00000200UL
34	#define F_ALLOW_BLESSED 0x00000400UL	46	#define F_ALLOW_BLESSED 0x00000400UL
35	#define F_CONV_BLESSED 0x00000800UL	47	#define F_CONV_BLESSED 0x00000800UL
36	#define F_RELAXED 0x00001000UL	48	#define F_RELAXED 0x00001000UL
37	#define F_ALLOW_UNKNOWN 0x00002000UL	49	#define F_ALLOW_UNKNOWN 0x00002000UL
		50	#define F_ALLOW_TAGS 0x00004000UL
38	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing	51	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
39		52
40	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	53	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
41		54
42	#define INIT_SIZE 32 // initial scalar size to be allocated	55	#define INIT_SIZE 64 // initial scalar size to be allocated
43	#define INDENT_STEP 3 // spaces per indentation level	56	#define INDENT_STEP 3 // spaces per indentation level
44		57
45	#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)
46		61
47	#define SB do {	62	#define SB do {
48	#define SE } while (0)	63	#define SE } while (0)
49		64
50	#if __GNUC__ >= 3	65	#if __GNUC__ >= 3
…		…
63	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	78	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
64		79
65	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"	80	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"
66		81
67	#ifdef USE_ITHREADS	82	#ifdef USE_ITHREADS
68	# define JSON_SLOW 1
69	# 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))
70	#else	86	#else
71	# define JSON_SLOW 0
72	# define JSON_STASH json_stash	87	# define JSON_STASH json_stash
		88	# define BOOL_STASH bool_stash
		89	# define GET_BOOL(value) bool_ ## value
73	#endif	90	#endif
74		91
75	static HV json_stash, json_boolean_stash; // JSON::XS::	92	// the amount of HEs to allocate on the stack, when sorting keys
76	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;
77		98
78	enum {	99	enum {
79	INCR_M_WS = 0, // initial whitespace skipping, must be 0	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
80	INCR_M_STR, // inside string	103	INCR_M_STR, // inside string
81	INCR_M_BS, // inside backslash	104	INCR_M_BS, // inside backslash
82	INCR_M_C0, // inside comment in initial whitespace sequence	105	INCR_M_C0, // inside comment in initial whitespace sequence
83	INCR_M_C1, // inside comment in other places	106	INCR_M_C1, // inside comment in other places
84	INCR_M_JSON // outside anything, count nesting	107	INCR_M_JSON // outside anything, count nesting
…		…
97	// for the incremental parser	120	// for the incremental parser
98	SV *incr_text; // the source text so far	121	SV *incr_text; // the source text so far
99	STRLEN incr_pos; // the current offset into the text	122	STRLEN incr_pos; // the current offset into the text
100	int incr_nest; // {[]}-nesting level	123	int incr_nest; // {[]}-nesting level
101	unsigned char incr_mode;	124	unsigned char incr_mode;
		125
		126	SV v_false, v_true;
102	} JSON;	127	} JSON;
103		128
104	INLINE void	129	INLINE void
105	json_init (JSON *json)	130	json_init (JSON *json)
106	{	131	{
107	Zero (json, 1, JSON);	132	static const JSON init = { F_ALLOW_NONREF, 512 };
108	json->max_depth = 512;	133
		134	*json = init;
109	}	135	}
110		136
111	/////////////////////////////////////////////////////////////////////////////	137	/////////////////////////////////////////////////////////////////////////////
112	// utility functions	138	// utility functions
113		139
…		…
135	SvPV_renew (sv, SvCUR (sv) + 1);	161	SvPV_renew (sv, SvCUR (sv) + 1);
136	#endif	162	#endif
137	}	163	}
138	}	164	}
139		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
140	// 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
141	// case of an error.	192	// case of an error.
142	// we special-case "safe" characters from U+80 .. U+7FF,	193	// we special-case "safe" characters from U+80 .. U+7FF,
143	// but use the very good perl function to parse anything else.	194	// but use the very good perl function to parse anything else.
144	// note that we never call this function for a ascii codepoints	195	// note that we never call this function for a ascii codepoints
145	INLINE UV	196	INLINE UV
…		…
188	? utf8_distance (offset, SvPVX (sv))	239	? utf8_distance (offset, SvPVX (sv))
189	: offset - SvPVX (sv);	240	: offset - SvPVX (sv);
190	}	241	}
191		242
192	/////////////////////////////////////////////////////////////////////////////	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
		381	/////////////////////////////////////////////////////////////////////////////
193	// encoder	382	// encoder
194		383
195	// structure used for encoding JSON	384	// structure used for encoding JSON
196	typedef struct	385	typedef struct
197	{	386	{
…		…
204	} enc_t;	393	} enc_t;
205		394
206	INLINE void	395	INLINE void
207	need (enc_t *enc, STRLEN len)	396	need (enc_t *enc, STRLEN len)
208	{	397	{
209	if (expect_false (enc->cur + len >= enc->end))	398	if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
210	{	399	{
211	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	400	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
212	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	401	char *buf = json_sv_grow (enc->sv, cur, len);
213	enc->cur = SvPVX (enc->sv) + cur;	402	enc->cur = buf + cur;
214	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	403	enc->end = buf + SvLEN (enc->sv) - 1;
215	}	404	}
216	}	405	}
217		406
218	INLINE void	407	INLINE void
219	encode_ch (enc_t *enc, char ch)	408	encode_ch (enc_t *enc, char ch)
…		…
235		424
236	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case	425	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
237	{	426	{
238	if (expect_false (ch == '"')) // but with slow exceptions	427	if (expect_false (ch == '"')) // but with slow exceptions
239	{	428	{
240	need (enc, len += 1);	429	need (enc, len + 1);
241	*enc->cur++ = '\\';	430	*enc->cur++ = '\\';
242	*enc->cur++ = '"';	431	*enc->cur++ = '"';
243	}	432	}
244	else if (expect_false (ch == '\\'))	433	else if (expect_false (ch == '\\'))
245	{	434	{
246	need (enc, len += 1);	435	need (enc, len + 1);
247	*enc->cur++ = '\\';	436	*enc->cur++ = '\\';
248	*enc->cur++ = '\\';	437	*enc->cur++ = '\\';
249	}	438	}
250	else	439	else
251	*enc->cur++ = ch;	440	*enc->cur++ = ch;
…		…
254	}	443	}
255	else	444	else
256	{	445	{
257	switch (ch)	446	switch (ch)
258	{	447	{
259	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;
260	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;
261	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;
262	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;
263	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;
264		453
265	default:	454	default:
266	{	455	{
267	STRLEN clen;	456	STRLEN clen;
268	UV uch;	457	UV uch;
…		…
284	if (uch >= 0x10000UL)	473	if (uch >= 0x10000UL)
285	{	474	{
286	if (uch >= 0x110000UL)	475	if (uch >= 0x110000UL)
287	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);
288		477
289	need (enc, len += 11);	478	need (enc, len + 11);
290	sprintf (enc->cur, "\\u%04x\\u%04x",	479	sprintf (enc->cur, "\\u%04x\\u%04x",
291	(int)((uch - 0x10000) / 0x400 + 0xD800),	480	(int)((uch - 0x10000) / 0x400 + 0xD800),
292	(int)((uch - 0x10000) % 0x400 + 0xDC00));	481	(int)((uch - 0x10000) % 0x400 + 0xDC00));
293	enc->cur += 12;	482	enc->cur += 12;
294	}	483	}
295	else	484	else
296	{	485	{
297	need (enc, len += 5);	486	need (enc, len + 5);
298	*enc->cur++ = '\\';	487	*enc->cur++ = '\\';
299	*enc->cur++ = 'u';	488	*enc->cur++ = 'u';
300	*enc->cur++ = PL_hexdigit [ uch >> 12 ];	489	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
301	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];	490	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
302	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];	491	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
…		…
310	*enc->cur++ = uch;	499	*enc->cur++ = uch;
311	str += clen;	500	str += clen;
312	}	501	}
313	else if (is_utf8)	502	else if (is_utf8)
314	{	503	{
315	need (enc, len += clen);	504	need (enc, len + clen);
316	do	505	do
317	{	506	{
318	enc->cur++ = str++;	507	enc->cur++ = str++;
319	}	508	}
320	while (--clen);	509	while (--clen);
321	}	510	}
322	else	511	else
323	{	512	{
324	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
325	enc->cur = encode_utf8 (enc->cur, uch);	514	enc->cur = encode_utf8 (enc->cur, uch);
326	++str;	515	++str;
327	}	516	}
328	}	517	}
329	}	518	}
…		…
383		572
384	if (enc->indent >= enc->json.max_depth)	573	if (enc->indent >= enc->json.max_depth)
385	croak (ERR_NESTING_EXCEEDED);	574	croak (ERR_NESTING_EXCEEDED);
386		575
387	encode_ch (enc, '[');	576	encode_ch (enc, '[');
388		577
389	if (len >= 0)	578	if (len >= 0)
390	{	579	{
391	encode_nl (enc); ++enc->indent;	580	encode_nl (enc); ++enc->indent;
392		581
393	for (i = 0; i <= len; ++i)	582	for (i = 0; i <= len; ++i)
…		…
405	encode_comma (enc);	594	encode_comma (enc);
406	}	595	}
407		596
408	encode_nl (enc); --enc->indent; encode_indent (enc);	597	encode_nl (enc); --enc->indent; encode_indent (enc);
409	}	598	}
410		599
411	encode_ch (enc, ']');	600	encode_ch (enc, ']');
412	}	601	}
413		602
414	static void	603	static void
415	encode_hk (enc_t enc, HE he)	604	encode_hk (enc_t enc, HE he)
…		…
419	if (HeKLEN (he) == HEf_SVKEY)	608	if (HeKLEN (he) == HEf_SVKEY)
420	{	609	{
421	SV *sv = HeSVKEY (he);	610	SV *sv = HeSVKEY (he);
422	STRLEN len;	611	STRLEN len;
423	char *str;	612	char *str;
424		613
425	SvGETMAGIC (sv);	614	SvGETMAGIC (sv);
426	str = SvPV (sv, len);	615	str = SvPV (sv, len);
427		616
428	encode_str (enc, str, len, SvUTF8 (sv));	617	encode_str (enc, str, len, SvUTF8 (sv));
429	}	618	}
…		…
495	}	684	}
496		685
497	if (count)	686	if (count)
498	{	687	{
499	int i, fast = 1;	688	int i, fast = 1;
500	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	689	HE *hes_stack [STACK_HES];
501	HE *hes = _alloca (count sizeof (HE));	690	HE **hes = hes_stack;
502	#else	691
503	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	692	// allocate larger arrays on the heap
504	#endif	693	if (count > STACK_HES)
		694	{
		695	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		696	hes = (HE **)SvPVX (sv);
		697	}
505		698
506	i = 0;	699	i = 0;
507	while ((he = hv_iternext (hv)))	700	while ((he = hv_iternext (hv)))
508	{	701	{
509	hes [i++] = he;	702	hes [i++] = he;
…		…
578	// encode objects, arrays and special \0=false and \1=true values.	771	// encode objects, arrays and special \0=false and \1=true values.
579	static void	772	static void
580	encode_rv (enc_t enc, SV sv)	773	encode_rv (enc_t enc, SV sv)
581	{	774	{
582	svtype svt;	775	svtype svt;
		776	GV *method;
583		777
584	SvGETMAGIC (sv);	778	SvGETMAGIC (sv);
585	svt = SvTYPE (sv);	779	svt = SvTYPE (sv);
586		780
587	if (expect_false (SvOBJECT (sv)))	781	if (expect_false (SvOBJECT (sv)))
588	{	782	{
589	HV *stash = !JSON_SLOW \|\| json_boolean_stash	783	HV *stash = SvSTASH (sv);
590	? json_boolean_stash
591	: gv_stashpv ("JSON::XS::Boolean", 1);
592		784
593	if (SvSTASH (sv) == stash)	785	if (stash == bool_stash)
594	{	786	{
595	if (SvIV (sv))
596	encode_str (enc, "true", 4, 0);	787	if (SvIV (sv)) encode_str (enc, "true" , 4, 0);
597	else
598	encode_str (enc, "false", 5, 0);	788	else encode_str (enc, "false", 5, 0);
599	}	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);
600	else	862	else
601	{
602	#if 0
603	if (0 && sv_derived_from (rv, "JSON::Literal"))
604	{
605	// not yet
606	}
607	#endif
608	if (enc->json.flags & F_CONV_BLESSED)
609	{
610	// we re-bless the reference to get overload and other niceties right
611	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
612
613	if (to_json)
614	{
615	dSP;
616
617	ENTER; SAVETMPS; PUSHMARK (SP);
618	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
619
620	// calling with G_SCALAR ensures that we always get a 1 return value
621	PUTBACK;
622	call_sv ((SV *)GvCV (to_json), G_SCALAR);
623	SPAGAIN;
624
625	// catch this surprisingly common error
626	if (SvROK (TOPs) && SvRV (TOPs) == sv)
627	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
628
629	sv = POPs;
630	PUTBACK;
631
632	encode_sv (enc, sv);
633
634	FREETMPS; LEAVE;
635	}
636	else if (enc->json.flags & F_ALLOW_BLESSED)
637	encode_str (enc, "null", 4, 0);
638	else
639	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
640	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
641	}
642	else if (enc->json.flags & F_ALLOW_BLESSED)
643	encode_str (enc, "null", 4, 0);
644	else
645	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)",
646	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	864	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
647	}
648	}	865	}
649	else if (svt == SVt_PVHV)	866	else if (svt == SVt_PVHV)
650	encode_hv (enc, (HV *)sv);	867	encode_hv (enc, (HV *)sv);
651	else if (svt == SVt_PVAV)	868	else if (svt == SVt_PVAV)
652	encode_av (enc, (AV *)sv);	869	encode_av (enc, (AV *)sv);
653	else if (svt < SVt_PVAV)	870	else if (svt < SVt_PVAV)
654	{	871	{
655	STRLEN len = 0;	872	int bool_type = ref_bool_type (sv);
656	char *pv = svt ? SvPV (sv, len) : 0;
657		873
658	if (len == 1 && *pv == '1')	874	if (bool_type == 1)
659	encode_str (enc, "true", 4, 0);	875	encode_str (enc, "true", 4, 0);
660	else if (len == 1 && *pv == '0')	876	else if (bool_type == 0)
661	encode_str (enc, "false", 5, 0);	877	encode_str (enc, "false", 5, 0);
662	else if (enc->json.flags & F_ALLOW_UNKNOWN)	878	else if (enc->json.flags & F_ALLOW_UNKNOWN)
663	encode_str (enc, "null", 4, 0);	879	encode_str (enc, "null", 4, 0);
664	else	880	else
665	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",
…		…
728	}	944	}
729	else	945	else
730	{	946	{
731	// large integer, use the (rather slow) snprintf way.	947	// large integer, use the (rather slow) snprintf way.
732	need (enc, IVUV_MAXCHARS);	948	need (enc, IVUV_MAXCHARS);
733	enc->cur +=	949	enc->cur +=
734	SvIsUV(sv)	950	SvIsUV(sv)
735	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	951	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
736	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	952	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
737	}	953	}
738	}	954	}
739	else if (SvROK (sv))	955	else if (SvROK (sv))
740	encode_rv (enc, SvRV (sv));	956	encode_rv (enc, SvRV (sv));
741	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)	957	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
742	encode_str (enc, "null", 4, 0);	958	encode_str (enc, "null", 4, 0);
743	else	959	else
744	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",
745	SvPV_nolen (sv), SvFLAGS (sv));	961	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
746	}	962	}
747		963
748	static SV *	964	static SV *
749	encode_json (SV scalar, JSON json)	965	encode_json (SV scalar, JSON json)
750	{	966	{
751	enc_t enc;	967	enc_t enc;
752		968
753	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	969	if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
754	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)");
755		971
756	enc.json = *json;	972	enc.json = *json;
757	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	973	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
758	enc.cur = SvPVX (enc.sv);	974	enc.cur = SvPVX (enc.sv);
…		…
965	cur++ = dec_cur++;	1181	cur++ = dec_cur++;
966	while (--clen);	1182	while (--clen);
967		1183
968	utf8 = 1;	1184	utf8 = 1;
969	}	1185	}
		1186	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1187	*cur++ = ch;
970	else	1188	else
971	{	1189	{
972	--dec_cur;	1190	--dec_cur;
973		1191
974	if (!ch)	1192	if (!ch)
…		…
984		1202
985	if (sv)	1203	if (sv)
986	{	1204	{
987	STRLEN cur = SvCUR (sv);	1205	STRLEN cur = SvCUR (sv);
988		1206
989	if (SvLEN (sv) <= cur + len)	1207	if (SvLEN (sv) - cur <= len)
990	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	1208	json_sv_grow (sv, cur, len);
991		1209
992	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1210	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
993	SvCUR_set (sv, SvCUR (sv) + len);	1211	SvCUR_set (sv, SvCUR (sv) + len);
994	}	1212	}
995	else	1213	else
…		…
1119	}	1337	}
1120		1338
1121	len -= *start == '-' ? 1 : 0;	1339	len -= *start == '-' ? 1 : 0;
1122		1340
1123	// does not fit into IV or UV, try NV	1341	// does not fit into IV or UV, try NV
1124	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1342	if (len <= NV_DIG)
1125	#if defined (LDBL_DIG)
1126	\|\| (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
1127	#endif
1128	)
1129	// fits into NV without loss of precision	1343	// fits into NV without loss of precision
1130	return newSVnv (Atof (start));	1344	return newSVnv (json_atof (start));
1131		1345
1132	// everything else fails, convert it to a string	1346	// everything else fails, convert it to a string
1133	return newSVpvn (start, dec->cur - start);	1347	return newSVpvn (start, dec->cur - start);
1134	}	1348	}
1135		1349
1136	// loss of precision here	1350	// loss of precision here
1137	return newSVnv (Atof (start));	1351	return newSVnv (json_atof (start));
1138		1352
1139	fail:	1353	fail:
1140	return 0;	1354	return 0;
1141	}	1355	}
1142		1356
…		…
1166	if (*dec->cur == ']')	1380	if (*dec->cur == ']')
1167	{	1381	{
1168	++dec->cur;	1382	++dec->cur;
1169	break;	1383	break;
1170	}	1384	}
1171		1385
1172	if (*dec->cur != ',')	1386	if (*dec->cur != ',')
1173	ERR (", or ] expected while parsing array");	1387	ERR (", or ] expected while parsing array");
1174		1388
1175	++dec->cur;	1389	++dec->cur;
1176		1390
…		…
1290		1504
1291	DEC_DEC_DEPTH;	1505	DEC_DEC_DEPTH;
1292	sv = newRV_noinc ((SV *)hv);	1506	sv = newRV_noinc ((SV *)hv);
1293		1507
1294	// check filter callbacks	1508	// check filter callbacks
1295	if (dec->json.flags & F_HOOK)	1509	if (expect_false (dec->json.flags & F_HOOK))
1296	{	1510	{
1297	if (dec->json.cb_sk_object && HvKEYS (hv) == 1)	1511	if (dec->json.cb_sk_object && HvKEYS (hv) == 1)
1298	{	1512	{
1299	HE cb, he;	1513	HE cb, he;
1300		1514
1301	hv_iterinit (hv);	1515	hv_iterinit (hv);
1302	he = hv_iternext (hv);	1516	he = hv_iternext (hv);
1303	hv_iterinit (hv);	1517	hv_iterinit (hv);
1304		1518
1305	// the next line creates a mortal sv each time its called.	1519	// the next line creates a mortal sv each time it's called.
1306	// might want to optimise this for common cases.	1520	// might want to optimise this for common cases.
1307	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);
1308		1522
1309	if (cb)	1523	if (cb)
1310	{	1524	{
1311	dSP;	1525	dSP;
1312	int count;	1526	int count;
1313		1527
1314	ENTER; SAVETMPS; PUSHMARK (SP);	1528	ENTER; SAVETMPS;
		1529	PUSHMARK (SP);
1315	XPUSHs (HeVAL (he));	1530	XPUSHs (HeVAL (he));
		1531	sv_2mortal (sv);
1316		1532
1317	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1533	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1318		1534
1319	if (count == 1)	1535	if (count == 1)
1320	{	1536	{
1321	sv = newSVsv (POPs);	1537	sv = newSVsv (POPs);
1322	FREETMPS; LEAVE;	1538	FREETMPS; LEAVE;
1323	return sv;	1539	return sv;
1324	}	1540	}
		1541	else if (count)
		1542	croak ("filter_json_single_key_object callbacks must not return more than one scalar");
1325		1543
		1544	SvREFCNT_inc (sv);
1326	FREETMPS; LEAVE;	1545	FREETMPS; LEAVE;
1327	}	1546	}
1328	}	1547	}
1329		1548
1330	if (dec->json.cb_object)	1549	if (dec->json.cb_object)
1331	{	1550	{
1332	dSP;	1551	dSP;
1333	int count;	1552	int count;
1334		1553
1335	ENTER; SAVETMPS; PUSHMARK (SP);	1554	ENTER; SAVETMPS;
		1555	PUSHMARK (SP);
1336	XPUSHs (sv_2mortal (sv));	1556	XPUSHs (sv_2mortal (sv));
1337		1557
1338	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1558	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1339		1559
1340	if (count == 1)	1560	if (count == 1)
1341	{
1342	sv = newSVsv (POPs);	1561	sv = newSVsv (POPs);
1343	FREETMPS; LEAVE;	1562	else if (count == 0)
1344	return sv;
1345	}
1346
1347	SvREFCNT_inc (sv);	1563	SvREFCNT_inc (sv);
		1564	else
		1565	croak ("filter_json_object callbacks must not return more than one scalar");
		1566
1348	FREETMPS; LEAVE;	1567	FREETMPS; LEAVE;
1349	}	1568	}
1350	}	1569	}
1351		1570
1352	return sv;	1571	return sv;
…		…
1356	DEC_DEC_DEPTH;	1575	DEC_DEC_DEPTH;
1357	return 0;	1576	return 0;
1358	}	1577	}
1359		1578
1360	static SV *	1579	static SV *
		1580	decode_tag (dec_t *dec)
		1581	{
		1582	SV *tag = 0;
		1583	SV *val = 0;
		1584
		1585	if (!(dec->json.flags & F_ALLOW_TAGS))
		1586	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1587
		1588	++dec->cur;
		1589
		1590	decode_ws (dec);
		1591
		1592	tag = decode_sv (dec);
		1593	if (!tag)
		1594	goto fail;
		1595
		1596	if (!SvPOK (tag))
		1597	ERR ("malformed JSON string, (tag) must be a string");
		1598
		1599	decode_ws (dec);
		1600
		1601	if (*dec->cur != ')')
		1602	ERR (") expected after tag");
		1603
		1604	++dec->cur;
		1605
		1606	decode_ws (dec);
		1607
		1608	val = decode_sv (dec);
		1609	if (!val)
		1610	goto fail;
		1611
		1612	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1613	ERR ("malformed JSON string, tag value must be an array");
		1614
		1615	{
		1616	AV av = (AV )SvRV (val);
		1617	int i, len = av_len (av) + 1;
		1618	HV *stash = gv_stashsv (tag, 0);
		1619	SV *sv;
		1620
		1621	if (!stash)
		1622	ERR ("cannot decode perl-object (package does not exist)");
		1623
		1624	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1625
		1626	if (!method)
		1627	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1628
		1629	dSP;
		1630
		1631	ENTER; SAVETMPS;
		1632	PUSHMARK (SP);
		1633	EXTEND (SP, len + 2);
		1634	// we re-bless the reference to get overload and other niceties right
		1635	PUSHs (tag);
		1636	PUSHs (sv_json);
		1637
		1638	for (i = 0; i < len; ++i)
		1639	PUSHs (*av_fetch (av, i, 1));
		1640
		1641	PUTBACK;
		1642	call_sv ((SV *)GvCV (method), G_SCALAR);
		1643	SPAGAIN;
		1644
		1645	SvREFCNT_dec (tag);
		1646	SvREFCNT_dec (val);
		1647	sv = SvREFCNT_inc (POPs);
		1648
		1649	PUTBACK;
		1650
		1651	FREETMPS; LEAVE;
		1652
		1653	return sv;
		1654	}
		1655
		1656	fail:
		1657	SvREFCNT_dec (tag);
		1658	SvREFCNT_dec (val);
		1659	return 0;
		1660	}
		1661
		1662	static SV *
1361	decode_sv (dec_t *dec)	1663	decode_sv (dec_t *dec)
1362	{	1664	{
1363	// the beauty of JSON: you need exactly one character lookahead	1665	// the beauty of JSON: you need exactly one character lookahead
1364	// to parse everything.	1666	// to parse everything.
1365	switch (*dec->cur)	1667	switch (*dec->cur)
1366	{	1668	{
1367	case '"': ++dec->cur; return decode_str (dec);	1669	case '"': ++dec->cur; return decode_str (dec);
1368	case '[': ++dec->cur; return decode_av (dec);	1670	case '[': ++dec->cur; return decode_av (dec);
1369	case '{': ++dec->cur; return decode_hv (dec);	1671	case '{': ++dec->cur; return decode_hv (dec);
		1672	case '(': return decode_tag (dec);
1370		1673
1371	case '-':	1674	case '-':
1372	case '0': case '1': case '2': case '3': case '4':	1675	case '0': case '1': case '2': case '3': case '4':
1373	case '5': case '6': case '7': case '8': case '9':	1676	case '5': case '6': case '7': case '8': case '9':
1374	return decode_num (dec);	1677	return decode_num (dec);
1375		1678
		1679	case 'f':
		1680	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
		1681	{
		1682	dec->cur += 5;
		1683
		1684	if (expect_false (!dec->json.v_false))
		1685	dec->json.v_false = GET_BOOL (false);
		1686
		1687	return newSVsv (dec->json.v_false);
		1688	}
		1689	else
		1690	ERR ("'false' expected");
		1691
		1692	break;
		1693
1376	case 't':	1694	case 't':
1377	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1695	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1378	{	1696	{
1379	dec->cur += 4;	1697	dec->cur += 4;
1380	#if JSON_SLOW	1698
1381	json_true = get_bool ("JSON::XS::true");	1699	if (expect_false (!dec->json.v_true))
1382	#endif	1700	dec->json.v_true = GET_BOOL (true);
		1701
1383	return newSVsv (json_true);	1702	return newSVsv (dec->json.v_true);
1384	}	1703	}
1385	else	1704	else
1386	ERR ("'true' expected");	1705	ERR ("'true' expected");
1387
1388	break;
1389
1390	case 'f':
1391	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1392	{
1393	dec->cur += 5;
1394	#if JSON_SLOW
1395	json_false = get_bool ("JSON::XS::false");
1396	#endif
1397	return newSVsv (json_false);
1398	}
1399	else
1400	ERR ("'false' expected");
1401		1706
1402	break;	1707	break;
1403		1708
1404	case 'n':	1709	case 'n':
1405	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	1710	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
…		…
1411	ERR ("'null' expected");	1716	ERR ("'null' expected");
1412		1717
1413	break;	1718	break;
1414		1719
1415	default:	1720	default:
1416	ERR ("malformed JSON string, neither array, object, number, string or atom");	1721	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1417	break;	1722	break;
1418	}	1723	}
1419		1724
1420	fail:	1725	fail:
1421	return 0;	1726	return 0;
1422	}	1727	}
1423		1728
1424	static SV *	1729	static SV *
1425	decode_json (SV string, JSON json, char **offset_return)	1730	decode_json (SV string, JSON json, STRLEN *offset_return)
1426	{	1731	{
1427	dec_t dec;	1732	dec_t dec;
1428	SV *sv;	1733	SV *sv;
1429		1734
1430	/* work around bugs in 5.10 where manipulating magic values	1735	/* work around bugs in 5.10 where manipulating magic values
1431	* will perl ignore the magic in subsequent accesses	1736	* makes perl ignore the magic in subsequent accesses.
		1737	* also make a copy of non-PV values, to get them into a clean
		1738	* state (SvPV should do that, but it's buggy, see below).
		1739	*
		1740	* SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
		1741	* as reported by Reini Urban.
1432	*/	1742	*/
1433	/SvGETMAGIC (string);/	1743	/SvGETMAGIC (string);/
1434	if (SvMAGICAL (string))	1744	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
1435	string = sv_2mortal (newSVsv (string));	1745	string = sv_2mortal (newSVsv (string));
1436		1746
1437	SvUPGRADE (string, SVt_PV);	1747	SvUPGRADE (string, SVt_PV);
1438		1748
1439	/* work around a bug in perl 5.10, which causes SvCUR to fail an	1749	/* work around a bug in perl 5.10, which causes SvCUR to fail an
…		…
1456	if (offset > json->max_size && json->max_size)	1766	if (offset > json->max_size && json->max_size)
1457	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1767	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1458	(unsigned long)SvCUR (string), (unsigned long)json->max_size);	1768	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
1459	}	1769	}
1460		1770
1461	if (json->flags & F_UTF8)	1771	if (DECODE_WANTS_OCTETS (json))
1462	sv_utf8_downgrade (string, 0);	1772	sv_utf8_downgrade (string, 0);
1463	else	1773	else
1464	sv_utf8_upgrade (string);	1774	sv_utf8_upgrade (string);
1465		1775
1466	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1776	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
…		…
1478		1788
1479	decode_ws (&dec);	1789	decode_ws (&dec);
1480	sv = decode_sv (&dec);	1790	sv = decode_sv (&dec);
1481		1791
1482	if (offset_return)	1792	if (offset_return)
1483	*offset_return = dec.cur;	1793	*offset_return = dec.cur - SvPVX (string);
1484		1794	else if (sv)
1485	if (!(offset_return \|\| !sv))
1486	{	1795	{
1487	// check for trailing garbage	1796	// check for trailing garbage
1488	decode_ws (&dec);	1797	decode_ws (&dec);
1489		1798
1490	if (*dec.cur)	1799	if (dec.cur != dec.end)
1491	{	1800	{
1492	dec.err = "garbage after JSON object";	1801	dec.err = "garbage after JSON object";
1493	SvREFCNT_dec (sv);	1802	SvREFCNT_dec (sv);
1494	sv = 0;	1803	sv = 0;
1495	}	1804	}
…		…
1508	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1817	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1509	LEAVE;	1818	LEAVE;
1510		1819
1511	croak ("%s, at character offset %d (before \"%s\")",	1820	croak ("%s, at character offset %d (before \"%s\")",
1512	dec.err,	1821	dec.err,
1513	ptr_to_index (string, dec.cur),	1822	(int)ptr_to_index (string, dec.cur),
1514	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1823	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1515	}	1824	}
1516		1825
1517	sv = sv_2mortal (sv);	1826	sv = sv_2mortal (sv);
1518		1827
1519	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1828	if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1520	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1829	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1521		1830
1522	return sv;	1831	return sv;
1523	}	1832	}
1524		1833
…		…
1533	// the state machine here is a bit convoluted and could be simplified a lot	1842	// the state machine here is a bit convoluted and could be simplified a lot
1534	// but this would make it slower, so...	1843	// but this would make it slower, so...
1535		1844
1536	for (;;)	1845	for (;;)
1537	{	1846	{
1538	//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
1539	switch (self->incr_mode)	1847	switch (self->incr_mode)
1540	{	1848	{
		1849	// reached end of a scalar, see if we are inside a nested structure or not
		1850	end_of_scalar:
		1851	self->incr_mode = INCR_M_JSON;
		1852
		1853	if (self->incr_nest) // end of a scalar inside array, object or tag
		1854	goto incr_m_json;
		1855	else // end of scalar outside structure, json text ends here
		1856	goto interrupt;
		1857
1541	// only used for initial whitespace skipping	1858	// only used for initial whitespace skipping
1542	case INCR_M_WS:	1859	case INCR_M_WS:
1543	for (;;)	1860	for (;;)
1544	{	1861	{
1545	if (*p > 0x20)	1862	if (*p > 0x20)
…		…
1587	++p;	1904	++p;
1588	}	1905	}
1589		1906
1590	break;	1907	break;
1591		1908
		1909	// inside true/false/null
		1910	case INCR_M_TFN:
		1911	incr_m_tfn:
		1912	for (;;)
		1913	switch (*p++)
		1914	{
		1915	case 'r': case 'u': case 'e': // tRUE, falsE, nUll
		1916	case 'a': case 'l': case 's': // fALSe, nuLL
		1917	// allowed
		1918	break;
		1919
		1920	default:
		1921	--p;
		1922	goto end_of_scalar;
		1923	}
		1924
		1925	// inside a number
		1926	case INCR_M_NUM:
		1927	incr_m_num:
		1928	for (;;)
		1929	switch (*p++)
		1930	{
		1931	case 'e': case 'E': case '.': case '+':
		1932	case '-':
		1933	case '0': case '1': case '2': case '3': case '4':
		1934	case '5': case '6': case '7': case '8': case '9':
		1935	// allowed
		1936	break;
		1937
		1938	default:
		1939	--p;
		1940	goto end_of_scalar;
		1941	}
		1942
1592	// inside a string	1943	// inside a string
1593	case INCR_M_STR:	1944	case INCR_M_STR:
1594	incr_m_str:	1945	incr_m_str:
1595	for (;;)	1946	for (;;)
1596	{	1947	{
1597	if (*p == '"')	1948	if (*p == '"')
1598	{	1949	{
1599	++p;	1950	++p;
1600	self->incr_mode = INCR_M_JSON;
1601
1602	if (!self->incr_nest)
1603	goto interrupt;
1604
1605	goto incr_m_json;	1951	goto end_of_scalar;
1606	}	1952	}
1607	else if (*p == '\\')	1953	else if (*p == '\\')
1608	{	1954	{
1609	++p; // "virtually" consumes character after \	1955	++p; // "virtually" consumes character after \
1610		1956
…		…
1640	--p; // do not eat the whitespace, let the next round do it	1986	--p; // do not eat the whitespace, let the next round do it
1641	goto interrupt;	1987	goto interrupt;
1642	}	1988	}
1643	break;	1989	break;
1644		1990
		1991	// the following three blocks handle scalars. this makes the parser
		1992	// more strict than required inside arrays or objects, and could
		1993	// be moved to a special case on the toplevel (except strings)
		1994	case 't':
		1995	case 'f':
		1996	case 'n':
		1997	self->incr_mode = INCR_M_TFN;
		1998	goto incr_m_tfn;
		1999
		2000	case '-':
		2001	case '0': case '1': case '2': case '3': case '4':
		2002	case '5': case '6': case '7': case '8': case '9':
		2003	self->incr_mode = INCR_M_NUM;
		2004	goto incr_m_num;
		2005
1645	case '"':	2006	case '"':
1646	self->incr_mode = INCR_M_STR;	2007	self->incr_mode = INCR_M_STR;
1647	goto incr_m_str;	2008	goto incr_m_str;
1648		2009
1649	case '[':	2010	case '[':
1650	case '{':	2011	case '{':
		2012	case '(':
1651	if (++self->incr_nest > self->max_depth)	2013	if (++self->incr_nest > self->max_depth)
1652	croak (ERR_NESTING_EXCEEDED);	2014	croak (ERR_NESTING_EXCEEDED);
1653	break;	2015	break;
1654		2016
1655	case ']':	2017	case ']':
1656	case '}':	2018	case '}':
1657	if (--self->incr_nest <= 0)	2019	if (--self->incr_nest <= 0)
1658	goto interrupt;	2020	goto interrupt;
		2021	break;
		2022
		2023	case ')':
		2024	--self->incr_nest;
1659	break;	2025	break;
1660		2026
1661	case '#':	2027	case '#':
1662	self->incr_mode = INCR_M_C1;	2028	self->incr_mode = INCR_M_C1;
1663	goto incr_m_c;	2029	goto incr_m_c;
…		…
1689	i >= '0' && i <= '9' ? i - '0'	2055	i >= '0' && i <= '9' ? i - '0'
1690	: i >= 'a' && i <= 'f' ? i - 'a' + 10	2056	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1691	: i >= 'A' && i <= 'F' ? i - 'A' + 10	2057	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1692	: -1;	2058	: -1;
1693		2059
1694	json_stash = gv_stashpv ("JSON::XS" , 1);	2060	json_stash = gv_stashpv ("JSON::XS" , 1);
1695	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	2061	bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1696
1697	json_true = get_bool ("JSON::XS::true");
1698	json_false = get_bool ("JSON::XS::false");	2062	bool_false = get_bool ("Types::Serialiser::false");
		2063	bool_true = get_bool ("Types::Serialiser::true");
		2064
		2065	sv_json = newSVpv ("JSON", 0);
		2066	SvREADONLY_on (sv_json);
1699		2067
1700	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */	2068	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1701	}	2069	}
1702		2070
1703	PROTOTYPES: DISABLE	2071	PROTOTYPES: DISABLE
1704		2072
1705	void CLONE (...)	2073	void CLONE (...)
1706	CODE:	2074	CODE:
		2075	// as long as these writes are atomic, the race should not matter
		2076	// as existing threads either already use 0, or use the old value,
		2077	// which is sitll correct for the initial thread.
1707	json_stash = 0;	2078	json_stash = 0;
1708	json_boolean_stash = 0;	2079	bool_stash = 0;
		2080	bool_false = 0;
		2081	bool_true = 0;
1709		2082
1710	void new (char *klass)	2083	void new (char *klass)
1711	PPCODE:	2084	PPCODE:
1712	{	2085	{
1713	SV *pv = NEWSV (0, sizeof (JSON));	2086	SV *pv = NEWSV (0, sizeof (JSON));
1714	SvPOK_only (pv);	2087	SvPOK_only (pv);
1715	json_init ((JSON *)SvPVX (pv));	2088	json_init ((JSON *)SvPVX (pv));
1716	XPUSHs (sv_2mortal (sv_bless (	2089	XPUSHs (sv_2mortal (sv_bless (
1717	newRV_noinc (pv),	2090	newRV_noinc (pv),
1718	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	2091	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1719	)));	2092	)));
1720	}	2093	}
		2094
		2095	void boolean_values (JSON self, SV v_false = 0, SV *v_true = 0)
		2096	PPCODE:
		2097	self->v_false = newSVsv (v_false);
		2098	self->v_true = newSVsv (v_true);
		2099	XPUSHs (ST (0));
		2100
		2101	void get_boolean_values (JSON *self)
		2102	PPCODE:
		2103	if (self->v_false && self->v_true)
		2104	{
		2105	EXTEND (SP, 2);
		2106	PUSHs (self->v_false);
		2107	PUSHs (self->v_true);
		2108	}
1721		2109
1722	void ascii (JSON *self, int enable = 1)	2110	void ascii (JSON *self, int enable = 1)
1723	ALIAS:	2111	ALIAS:
1724	ascii = F_ASCII	2112	ascii = F_ASCII
1725	latin1 = F_LATIN1	2113	latin1 = F_LATIN1
…		…
1733	shrink = F_SHRINK	2121	shrink = F_SHRINK
1734	allow_blessed = F_ALLOW_BLESSED	2122	allow_blessed = F_ALLOW_BLESSED
1735	convert_blessed = F_CONV_BLESSED	2123	convert_blessed = F_CONV_BLESSED
1736	relaxed = F_RELAXED	2124	relaxed = F_RELAXED
1737	allow_unknown = F_ALLOW_UNKNOWN	2125	allow_unknown = F_ALLOW_UNKNOWN
		2126	allow_tags = F_ALLOW_TAGS
1738	PPCODE:	2127	PPCODE:
1739	{	2128	{
1740	if (enable)	2129	if (enable)
1741	self->flags \|= ix;	2130	self->flags \|= ix;
1742	else	2131	else
…		…
1758	get_shrink = F_SHRINK	2147	get_shrink = F_SHRINK
1759	get_allow_blessed = F_ALLOW_BLESSED	2148	get_allow_blessed = F_ALLOW_BLESSED
1760	get_convert_blessed = F_CONV_BLESSED	2149	get_convert_blessed = F_CONV_BLESSED
1761	get_relaxed = F_RELAXED	2150	get_relaxed = F_RELAXED
1762	get_allow_unknown = F_ALLOW_UNKNOWN	2151	get_allow_unknown = F_ALLOW_UNKNOWN
		2152	get_allow_tags = F_ALLOW_TAGS
1763	PPCODE:	2153	PPCODE:
1764	XPUSHs (boolSV (self->flags & ix));	2154	XPUSHs (boolSV (self->flags & ix));
1765		2155
1766	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)	2156	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1767	PPCODE:	2157	PPCODE:
…		…
1795	}	2185	}
1796		2186
1797	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2187	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1798	PPCODE:	2188	PPCODE:
1799	{	2189	{
1800	if (!self->cb_sk_object)	2190	if (!self->cb_sk_object)
1801	self->cb_sk_object = newHV ();	2191	self->cb_sk_object = newHV ();
1802		2192
1803	if (SvOK (cb))	2193	if (SvOK (cb))
1804	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2194	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1805	else	2195	else
…		…
1816	XPUSHs (ST (0));	2206	XPUSHs (ST (0));
1817	}	2207	}
1818		2208
1819	void encode (JSON self, SV scalar)	2209	void encode (JSON self, SV scalar)
1820	PPCODE:	2210	PPCODE:
1821	XPUSHs (encode_json (scalar, self));	2211	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2212	XPUSHs (scalar);
1822		2213
1823	void decode (JSON self, SV jsonstr)	2214	void decode (JSON self, SV jsonstr)
1824	PPCODE:	2215	PPCODE:
1825	XPUSHs (decode_json (jsonstr, self, 0));	2216	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2217	XPUSHs (jsonstr);
1826		2218
1827	void decode_prefix (JSON self, SV jsonstr)	2219	void decode_prefix (JSON self, SV jsonstr)
1828	PPCODE:	2220	PPCODE:
1829	{	2221	{
1830	char *offset;	2222	SV *sv;
		2223	STRLEN offset;
		2224	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1831	EXTEND (SP, 2);	2225	EXTEND (SP, 2);
1832	PUSHs (decode_json (jsonstr, self, &offset));	2226	PUSHs (sv);
1833	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));	2227	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
1834	}	2228	}
1835		2229
1836	void incr_parse (JSON self, SV jsonstr = 0)	2230	void incr_parse (JSON self, SV jsonstr = 0)
1837	PPCODE:	2231	PPCODE:
1838	{	2232	{
1839	if (!self->incr_text)	2233	if (!self->incr_text)
1840	self->incr_text = newSVpvn ("", 0);	2234	self->incr_text = newSVpvn ("", 0);
		2235
		2236	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2237	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2238	if (DECODE_WANTS_OCTETS (self))
		2239	{
		2240	if (self->incr_pos)
		2241	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2242	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2243
		2244	sv_utf8_downgrade (self->incr_text, 0);
		2245	}
		2246	else
		2247	{
		2248	sv_utf8_upgrade (self->incr_text);
		2249
		2250	if (self->incr_pos)
		2251	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2252	- (U8 *)SvPVX (self->incr_text);
		2253	}
1841		2254
1842	// append data, if any	2255	// append data, if any
1843	if (jsonstr)	2256	if (jsonstr)
1844	{	2257	{
		2258	/* make sure both strings have same encoding */
		2259	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
1845	if (SvUTF8 (jsonstr))	2260	if (SvUTF8 (jsonstr))
		2261	sv_utf8_downgrade (jsonstr, 0);
1846	{	2262	else
1847	if (!SvUTF8 (self->incr_text))
1848	{
1849	/* utf-8-ness differs, need to upgrade */
1850	sv_utf8_upgrade (self->incr_text);
1851
1852	if (self->incr_pos)
1853	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
1854	- (U8 *)SvPVX (self->incr_text);
1855	}
1856	}
1857	else if (SvUTF8 (self->incr_text))
1858	sv_utf8_upgrade (jsonstr);	2263	sv_utf8_upgrade (jsonstr);
1859		2264
		2265	/* and then just blindly append */
1860	{	2266	{
1861	STRLEN len;	2267	STRLEN len;
1862	const char *str = SvPV (jsonstr, len);	2268	const char *str = SvPV (jsonstr, len);
1863	STRLEN cur = SvCUR (self->incr_text);	2269	STRLEN cur = SvCUR (self->incr_text);
1864		2270
1865	if (SvLEN (self->incr_text) <= cur + len)	2271	if (SvLEN (self->incr_text) - cur <= len)
1866	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	2272	json_sv_grow (self->incr_text, cur, len);
1867		2273
1868	Move (str, SvEND (self->incr_text), len, char);	2274	Move (str, SvEND (self->incr_text), len, char);
1869	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);	2275	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
1870	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there	2276	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1871	}	2277	}
1872	}	2278	}
1873		2279
1874	if (GIMME_V != G_VOID)	2280	if (GIMME_V != G_VOID)
1875	do	2281	do
1876	{	2282	{
		2283	SV *sv;
1877	char *offset;	2284	STRLEN offset;
1878		2285
1879	if (!INCR_DONE (self))	2286	if (!INCR_DONE (self))
1880	{	2287	{
1881	incr_parse (self);	2288	incr_parse (self);
1882		2289
1883	if (self->incr_pos > self->max_size && self->max_size)	2290	if (self->incr_pos > self->max_size && self->max_size)
1884	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	2291	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1885	(unsigned long)self->incr_pos, (unsigned long)self->max_size);	2292	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
1886		2293
1887	if (!INCR_DONE (self))	2294	if (!INCR_DONE (self))
		2295	{
		2296	// as an optimisation, do not accumulate white space in the incr buffer
		2297	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2298	{
		2299	self->incr_pos = 0;
		2300	SvCUR_set (self->incr_text, 0);
		2301	}
		2302
1888	break;	2303	break;
		2304	}
1889	}	2305	}
1890		2306
1891	XPUSHs (decode_json (self->incr_text, self, &offset));	2307	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2308	XPUSHs (sv);
1892		2309
1893	self->incr_pos -= offset - SvPVX (self->incr_text);	2310	self->incr_pos -= offset;
1894	self->incr_nest = 0;	2311	self->incr_nest = 0;
1895	self->incr_mode = 0;	2312	self->incr_mode = 0;
1896		2313
1897	sv_chop (self->incr_text, offset);	2314	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
1898	}	2315	}
1899	while (GIMME_V == G_ARRAY);	2316	while (GIMME_V == G_ARRAY);
1900	}	2317	}
1901		2318
1902	SV incr_text (JSON self)	2319	SV incr_text (JSON self)
…		…
1933	self->incr_mode = 0;	2350	self->incr_mode = 0;
1934	}	2351	}
1935		2352
1936	void DESTROY (JSON *self)	2353	void DESTROY (JSON *self)
1937	CODE:	2354	CODE:
		2355	SvREFCNT_dec (self->v_false);
		2356	SvREFCNT_dec (self->v_true);
1938	SvREFCNT_dec (self->cb_sk_object);	2357	SvREFCNT_dec (self->cb_sk_object);
1939	SvREFCNT_dec (self->cb_object);	2358	SvREFCNT_dec (self->cb_object);
1940	SvREFCNT_dec (self->incr_text);	2359	SvREFCNT_dec (self->incr_text);
1941		2360
1942	PROTOTYPES: ENABLE	2361	PROTOTYPES: ENABLE
1943		2362
1944	void encode_json (SV *scalar)	2363	void encode_json (SV *scalar)
1945	ALIAS:
1946	to_json_ = 0
1947	encode_json = F_UTF8
1948	PPCODE:	2364	PPCODE:
1949	{	2365	{
1950	JSON json;	2366	JSON json;
1951	json_init (&json);	2367	json_init (&json);
1952	json.flags \|= ix;	2368	json.flags \|= F_UTF8;
1953	XPUSHs (encode_json (scalar, &json));	2369	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2370	XPUSHs (scalar);
1954	}	2371	}
1955		2372
1956	void decode_json (SV *jsonstr)	2373	void decode_json (SV *jsonstr)
1957	ALIAS:
1958	from_json_ = 0
1959	decode_json = F_UTF8
1960	PPCODE:	2374	PPCODE:
1961	{	2375	{
1962	JSON json;	2376	JSON json;
1963	json_init (&json);	2377	json_init (&json);
1964	json.flags \|= ix;	2378	json.flags \|= F_UTF8;
1965	XPUSHs (decode_json (jsonstr, &json, 0));	2379	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2380	XPUSHs (jsonstr);
1966	}	2381	}
1967		2382
1968

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Comparing JSON-XS/XS.xs (file contents): Revision 1.103 by root, Wed Jan 6 08:01:39 2010 UTC vs. Revision 1.138 by root, Wed Mar 6 07:21:17 2019 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.103 by root, Wed Jan 6 08:01:39 2010 UTC vs.
Revision 1.138 by root, Wed Mar 6 07:21:17 2019 UTC