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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.107 by root, Wed Mar 17 01:45:43 2010 UTC vs.
Revision 1.136 by root, Thu Nov 15 22:35:35 2018 UTC

…		…
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
12	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	13	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
13	# define snprintf _snprintf // C compilers have this in stdio.h	14	# define snprintf _snprintf // C compilers have this in stdio.h
14	#endif	15	#endif
15		16
16	// some old perls do not have this, try to make it work, no	17	// some old perls do not have this, try to make it work, no
17	// 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
…		…
258	}	309	}
259		310
260	// this relies greatly on the quality of the pow ()	311	// this relies greatly on the quality of the pow ()
261	// implementation of the platform, but a good	312	// implementation of the platform, but a good
262	// implementation is hard to beat.	313	// implementation is hard to beat.
		314	// (IEEE 754 conformant ones are required to be exact)
263	if (postdp) *expo -= eaccum;	315	if (postdp) *expo -= eaccum;
264	accum += uaccum Perl_pow (10., *expo);	316	accum += uaccum Perl_pow (10., *expo);
265	*expo += eaccum;	317	*expo += eaccum;
266	}	318	}
267		319
…		…
281	// a recursion depth of ten gives us >>500 bits	333	// a recursion depth of ten gives us >>500 bits
282	json_atof_scan1 (s, &accum, &expo, 0, 10);	334	json_atof_scan1 (s, &accum, &expo, 0, 10);
283		335
284	return neg ? -accum : accum;	336	return neg ? -accum : accum;
285	}	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
286	/////////////////////////////////////////////////////////////////////////////	381	/////////////////////////////////////////////////////////////////////////////
287	// encoder	382	// encoder
288		383
289	// structure used for encoding JSON	384	// structure used for encoding JSON
290	typedef struct	385	typedef struct
…		…
298	} enc_t;	393	} enc_t;
299		394
300	INLINE void	395	INLINE void
301	need (enc_t *enc, STRLEN len)	396	need (enc_t *enc, STRLEN len)
302	{	397	{
303	if (expect_false (enc->cur + len >= enc->end))	398	if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
304	{	399	{
305	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	400	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
306	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	401	char *buf = json_sv_grow (enc->sv, cur, len);
307	enc->cur = SvPVX (enc->sv) + cur;	402	enc->cur = buf + cur;
308	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	403	enc->end = buf + SvLEN (enc->sv) - 1;
309	}	404	}
310	}	405	}
311		406
312	INLINE void	407	INLINE void
313	encode_ch (enc_t *enc, char ch)	408	encode_ch (enc_t *enc, char ch)
…		…
329		424
330	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case	425	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
331	{	426	{
332	if (expect_false (ch == '"')) // but with slow exceptions	427	if (expect_false (ch == '"')) // but with slow exceptions
333	{	428	{
334	need (enc, len += 1);	429	need (enc, len + 1);
335	*enc->cur++ = '\\';	430	*enc->cur++ = '\\';
336	*enc->cur++ = '"';	431	*enc->cur++ = '"';
337	}	432	}
338	else if (expect_false (ch == '\\'))	433	else if (expect_false (ch == '\\'))
339	{	434	{
340	need (enc, len += 1);	435	need (enc, len + 1);
341	*enc->cur++ = '\\';	436	*enc->cur++ = '\\';
342	*enc->cur++ = '\\';	437	*enc->cur++ = '\\';
343	}	438	}
344	else	439	else
345	*enc->cur++ = ch;	440	*enc->cur++ = ch;
…		…
348	}	443	}
349	else	444	else
350	{	445	{
351	switch (ch)	446	switch (ch)
352	{	447	{
353	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;
354	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;
355	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;
356	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;
357	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;
358		453
359	default:	454	default:
360	{	455	{
361	STRLEN clen;	456	STRLEN clen;
362	UV uch;	457	UV uch;
…		…
378	if (uch >= 0x10000UL)	473	if (uch >= 0x10000UL)
379	{	474	{
380	if (uch >= 0x110000UL)	475	if (uch >= 0x110000UL)
381	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);
382		477
383	need (enc, len += 11);	478	need (enc, len + 11);
384	sprintf (enc->cur, "\\u%04x\\u%04x",	479	sprintf (enc->cur, "\\u%04x\\u%04x",
385	(int)((uch - 0x10000) / 0x400 + 0xD800),	480	(int)((uch - 0x10000) / 0x400 + 0xD800),
386	(int)((uch - 0x10000) % 0x400 + 0xDC00));	481	(int)((uch - 0x10000) % 0x400 + 0xDC00));
387	enc->cur += 12;	482	enc->cur += 12;
388	}	483	}
389	else	484	else
390	{	485	{
391	need (enc, len += 5);	486	need (enc, len + 5);
392	*enc->cur++ = '\\';	487	*enc->cur++ = '\\';
393	*enc->cur++ = 'u';	488	*enc->cur++ = 'u';
394	*enc->cur++ = PL_hexdigit [ uch >> 12 ];	489	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
395	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];	490	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
396	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];	491	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
…		…
404	*enc->cur++ = uch;	499	*enc->cur++ = uch;
405	str += clen;	500	str += clen;
406	}	501	}
407	else if (is_utf8)	502	else if (is_utf8)
408	{	503	{
409	need (enc, len += clen);	504	need (enc, len + clen);
410	do	505	do
411	{	506	{
412	enc->cur++ = str++;	507	enc->cur++ = str++;
413	}	508	}
414	while (--clen);	509	while (--clen);
415	}	510	}
416	else	511	else
417	{	512	{
418	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
419	enc->cur = encode_utf8 (enc->cur, uch);	514	enc->cur = encode_utf8 (enc->cur, uch);
420	++str;	515	++str;
421	}	516	}
422	}	517	}
423	}	518	}
…		…
477		572
478	if (enc->indent >= enc->json.max_depth)	573	if (enc->indent >= enc->json.max_depth)
479	croak (ERR_NESTING_EXCEEDED);	574	croak (ERR_NESTING_EXCEEDED);
480		575
481	encode_ch (enc, '[');	576	encode_ch (enc, '[');
482		577
483	if (len >= 0)	578	if (len >= 0)
484	{	579	{
485	encode_nl (enc); ++enc->indent;	580	encode_nl (enc); ++enc->indent;
486		581
487	for (i = 0; i <= len; ++i)	582	for (i = 0; i <= len; ++i)
…		…
499	encode_comma (enc);	594	encode_comma (enc);
500	}	595	}
501		596
502	encode_nl (enc); --enc->indent; encode_indent (enc);	597	encode_nl (enc); --enc->indent; encode_indent (enc);
503	}	598	}
504		599
505	encode_ch (enc, ']');	600	encode_ch (enc, ']');
506	}	601	}
507		602
508	static void	603	static void
509	encode_hk (enc_t enc, HE he)	604	encode_hk (enc_t enc, HE he)
…		…
513	if (HeKLEN (he) == HEf_SVKEY)	608	if (HeKLEN (he) == HEf_SVKEY)
514	{	609	{
515	SV *sv = HeSVKEY (he);	610	SV *sv = HeSVKEY (he);
516	STRLEN len;	611	STRLEN len;
517	char *str;	612	char *str;
518		613
519	SvGETMAGIC (sv);	614	SvGETMAGIC (sv);
520	str = SvPV (sv, len);	615	str = SvPV (sv, len);
521		616
522	encode_str (enc, str, len, SvUTF8 (sv));	617	encode_str (enc, str, len, SvUTF8 (sv));
523	}	618	}
…		…
589	}	684	}
590		685
591	if (count)	686	if (count)
592	{	687	{
593	int i, fast = 1;	688	int i, fast = 1;
594	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	689	HE *hes_stack [STACK_HES];
595	HE *hes = _alloca (count sizeof (HE));	690	HE **hes = hes_stack;
596	#else	691
597	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	692	// allocate larger arrays on the heap
598	#endif	693	if (count > STACK_HES)
		694	{
		695	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		696	hes = (HE **)SvPVX (sv);
		697	}
599		698
600	i = 0;	699	i = 0;
601	while ((he = hv_iternext (hv)))	700	while ((he = hv_iternext (hv)))
602	{	701	{
603	hes [i++] = he;	702	hes [i++] = he;
…		…
672	// encode objects, arrays and special \0=false and \1=true values.	771	// encode objects, arrays and special \0=false and \1=true values.
673	static void	772	static void
674	encode_rv (enc_t enc, SV sv)	773	encode_rv (enc_t enc, SV sv)
675	{	774	{
676	svtype svt;	775	svtype svt;
		776	GV *method;
677		777
678	SvGETMAGIC (sv);	778	SvGETMAGIC (sv);
679	svt = SvTYPE (sv);	779	svt = SvTYPE (sv);
680		780
681	if (expect_false (SvOBJECT (sv)))	781	if (expect_false (SvOBJECT (sv)))
682	{	782	{
683	HV *stash = !JSON_SLOW \|\| json_boolean_stash	783	HV *stash = SvSTASH (sv);
684	? json_boolean_stash
685	: gv_stashpv ("JSON::XS::Boolean", 1);
686		784
687	if (SvSTASH (sv) == stash)	785	if (stash == bool_stash)
688	{	786	{
689	if (SvIV (sv))
690	encode_str (enc, "true", 4, 0);	787	if (SvIV (sv)) encode_str (enc, "true" , 4, 0);
691	else
692	encode_str (enc, "false", 5, 0);	788	else encode_str (enc, "false", 5, 0);
693	}	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);
694	else	862	else
695	{
696	#if 0
697	if (0 && sv_derived_from (rv, "JSON::Literal"))
698	{
699	// not yet
700	}
701	#endif
702	if (enc->json.flags & F_CONV_BLESSED)
703	{
704	// we re-bless the reference to get overload and other niceties right
705	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
706
707	if (to_json)
708	{
709	dSP;
710
711	ENTER; SAVETMPS; PUSHMARK (SP);
712	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
713
714	// calling with G_SCALAR ensures that we always get a 1 return value
715	PUTBACK;
716	call_sv ((SV *)GvCV (to_json), G_SCALAR);
717	SPAGAIN;
718
719	// catch this surprisingly common error
720	if (SvROK (TOPs) && SvRV (TOPs) == sv)
721	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
722
723	sv = POPs;
724	PUTBACK;
725
726	encode_sv (enc, sv);
727
728	FREETMPS; LEAVE;
729	}
730	else if (enc->json.flags & F_ALLOW_BLESSED)
731	encode_str (enc, "null", 4, 0);
732	else
733	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
734	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
735	}
736	else if (enc->json.flags & F_ALLOW_BLESSED)
737	encode_str (enc, "null", 4, 0);
738	else
739	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)",
740	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	864	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
741	}
742	}	865	}
743	else if (svt == SVt_PVHV)	866	else if (svt == SVt_PVHV)
744	encode_hv (enc, (HV *)sv);	867	encode_hv (enc, (HV *)sv);
745	else if (svt == SVt_PVAV)	868	else if (svt == SVt_PVAV)
746	encode_av (enc, (AV *)sv);	869	encode_av (enc, (AV *)sv);
747	else if (svt < SVt_PVAV)	870	else if (svt < SVt_PVAV)
748	{	871	{
749	STRLEN len = 0;	872	int bool_type = ref_bool_type (sv);
750	char *pv = svt ? SvPV (sv, len) : 0;
751		873
752	if (len == 1 && *pv == '1')	874	if (bool_type == 1)
753	encode_str (enc, "true", 4, 0);	875	encode_str (enc, "true", 4, 0);
754	else if (len == 1 && *pv == '0')	876	else if (bool_type == 0)
755	encode_str (enc, "false", 5, 0);	877	encode_str (enc, "false", 5, 0);
756	else if (enc->json.flags & F_ALLOW_UNKNOWN)	878	else if (enc->json.flags & F_ALLOW_UNKNOWN)
757	encode_str (enc, "null", 4, 0);	879	encode_str (enc, "null", 4, 0);
758	else	880	else
759	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",
…		…
822	}	944	}
823	else	945	else
824	{	946	{
825	// large integer, use the (rather slow) snprintf way.	947	// large integer, use the (rather slow) snprintf way.
826	need (enc, IVUV_MAXCHARS);	948	need (enc, IVUV_MAXCHARS);
827	enc->cur +=	949	enc->cur +=
828	SvIsUV(sv)	950	SvIsUV(sv)
829	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	951	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
830	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	952	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
831	}	953	}
832	}	954	}
833	else if (SvROK (sv))	955	else if (SvROK (sv))
834	encode_rv (enc, SvRV (sv));	956	encode_rv (enc, SvRV (sv));
835	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)	957	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
836	encode_str (enc, "null", 4, 0);	958	encode_str (enc, "null", 4, 0);
837	else	959	else
838	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",
839	SvPV_nolen (sv), SvFLAGS (sv));	961	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
840	}	962	}
841		963
842	static SV *	964	static SV *
843	encode_json (SV scalar, JSON json)	965	encode_json (SV scalar, JSON json)
844	{	966	{
845	enc_t enc;	967	enc_t enc;
846		968
847	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	969	if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
848	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)");
849		971
850	enc.json = *json;	972	enc.json = *json;
851	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	973	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
852	enc.cur = SvPVX (enc.sv);	974	enc.cur = SvPVX (enc.sv);
…		…
1059	cur++ = dec_cur++;	1181	cur++ = dec_cur++;
1060	while (--clen);	1182	while (--clen);
1061		1183
1062	utf8 = 1;	1184	utf8 = 1;
1063	}	1185	}
		1186	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1187	*cur++ = ch;
1064	else	1188	else
1065	{	1189	{
1066	--dec_cur;	1190	--dec_cur;
1067		1191
1068	if (!ch)	1192	if (!ch)
…		…
1078		1202
1079	if (sv)	1203	if (sv)
1080	{	1204	{
1081	STRLEN cur = SvCUR (sv);	1205	STRLEN cur = SvCUR (sv);
1082		1206
1083	if (SvLEN (sv) <= cur + len)	1207	if (SvLEN (sv) - cur <= len)
1084	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	1208	json_sv_grow (sv, cur, len);
1085		1209
1086	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1210	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
1087	SvCUR_set (sv, SvCUR (sv) + len);	1211	SvCUR_set (sv, SvCUR (sv) + len);
1088	}	1212	}
1089	else	1213	else
…		…
1256	if (*dec->cur == ']')	1380	if (*dec->cur == ']')
1257	{	1381	{
1258	++dec->cur;	1382	++dec->cur;
1259	break;	1383	break;
1260	}	1384	}
1261		1385
1262	if (*dec->cur != ',')	1386	if (*dec->cur != ',')
1263	ERR (", or ] expected while parsing array");	1387	ERR (", or ] expected while parsing array");
1264		1388
1265	++dec->cur;	1389	++dec->cur;
1266		1390
…		…
1390		1514
1391	hv_iterinit (hv);	1515	hv_iterinit (hv);
1392	he = hv_iternext (hv);	1516	he = hv_iternext (hv);
1393	hv_iterinit (hv);	1517	hv_iterinit (hv);
1394		1518
1395	// the next line creates a mortal sv each time its called.	1519	// the next line creates a mortal sv each time it's called.
1396	// might want to optimise this for common cases.	1520	// might want to optimise this for common cases.
1397	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);
1398		1522
1399	if (cb)	1523	if (cb)
1400	{	1524	{
1401	dSP;	1525	dSP;
1402	int count;	1526	int count;
1403		1527
1404	ENTER; SAVETMPS; PUSHMARK (SP);	1528	ENTER; SAVETMPS;
		1529	PUSHMARK (SP);
1405	XPUSHs (HeVAL (he));	1530	XPUSHs (HeVAL (he));
1406	sv_2mortal (sv);	1531	sv_2mortal (sv);
1407		1532
1408	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1533	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1409		1534
…		…
1411	{	1536	{
1412	sv = newSVsv (POPs);	1537	sv = newSVsv (POPs);
1413	FREETMPS; LEAVE;	1538	FREETMPS; LEAVE;
1414	return sv;	1539	return sv;
1415	}	1540	}
		1541	else if (count)
		1542	croak ("filter_json_single_key_object callbacks must not return more than one scalar");
1416		1543
1417	SvREFCNT_inc (sv);	1544	SvREFCNT_inc (sv);
1418	FREETMPS; LEAVE;	1545	FREETMPS; LEAVE;
1419	}	1546	}
1420	}	1547	}
…		…
1422	if (dec->json.cb_object)	1549	if (dec->json.cb_object)
1423	{	1550	{
1424	dSP;	1551	dSP;
1425	int count;	1552	int count;
1426		1553
1427	ENTER; SAVETMPS; PUSHMARK (SP);	1554	ENTER; SAVETMPS;
		1555	PUSHMARK (SP);
1428	XPUSHs (sv_2mortal (sv));	1556	XPUSHs (sv_2mortal (sv));
1429		1557
1430	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1558	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1431		1559
1432	if (count == 1)	1560	if (count == 1)
1433	{	1561	{
1434	sv = newSVsv (POPs);	1562	sv = newSVsv (POPs);
1435	FREETMPS; LEAVE;	1563	FREETMPS; LEAVE;
1436	return sv;	1564	return sv;
1437	}	1565	}
		1566	else if (count)
		1567	croak ("filter_json_object callbacks must not return more than one scalar");
1438		1568
1439	SvREFCNT_inc (sv);	1569	SvREFCNT_inc (sv);
1440	FREETMPS; LEAVE;	1570	FREETMPS; LEAVE;
1441	}	1571	}
1442	}	1572	}
…		…
1448	DEC_DEC_DEPTH;	1578	DEC_DEC_DEPTH;
1449	return 0;	1579	return 0;
1450	}	1580	}
1451		1581
1452	static SV *	1582	static SV *
		1583	decode_tag (dec_t *dec)
		1584	{
		1585	SV *tag = 0;
		1586	SV *val = 0;
		1587
		1588	if (!(dec->json.flags & F_ALLOW_TAGS))
		1589	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1590
		1591	++dec->cur;
		1592
		1593	decode_ws (dec);
		1594
		1595	tag = decode_sv (dec);
		1596	if (!tag)
		1597	goto fail;
		1598
		1599	if (!SvPOK (tag))
		1600	ERR ("malformed JSON string, (tag) must be a string");
		1601
		1602	decode_ws (dec);
		1603
		1604	if (*dec->cur != ')')
		1605	ERR (") expected after tag");
		1606
		1607	++dec->cur;
		1608
		1609	decode_ws (dec);
		1610
		1611	val = decode_sv (dec);
		1612	if (!val)
		1613	goto fail;
		1614
		1615	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1616	ERR ("malformed JSON string, tag value must be an array");
		1617
		1618	{
		1619	AV av = (AV )SvRV (val);
		1620	int i, len = av_len (av) + 1;
		1621	HV *stash = gv_stashsv (tag, 0);
		1622	SV *sv;
		1623
		1624	if (!stash)
		1625	ERR ("cannot decode perl-object (package does not exist)");
		1626
		1627	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1628
		1629	if (!method)
		1630	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1631
		1632	dSP;
		1633
		1634	ENTER; SAVETMPS;
		1635	PUSHMARK (SP);
		1636	EXTEND (SP, len + 2);
		1637	// we re-bless the reference to get overload and other niceties right
		1638	PUSHs (tag);
		1639	PUSHs (sv_json);
		1640
		1641	for (i = 0; i < len; ++i)
		1642	PUSHs (*av_fetch (av, i, 1));
		1643
		1644	PUTBACK;
		1645	call_sv ((SV *)GvCV (method), G_SCALAR);
		1646	SPAGAIN;
		1647
		1648	SvREFCNT_dec (tag);
		1649	SvREFCNT_dec (val);
		1650	sv = SvREFCNT_inc (POPs);
		1651
		1652	PUTBACK;
		1653
		1654	FREETMPS; LEAVE;
		1655
		1656	return sv;
		1657	}
		1658
		1659	fail:
		1660	SvREFCNT_dec (tag);
		1661	SvREFCNT_dec (val);
		1662	return 0;
		1663	}
		1664
		1665	static SV *
1453	decode_sv (dec_t *dec)	1666	decode_sv (dec_t *dec)
1454	{	1667	{
1455	// the beauty of JSON: you need exactly one character lookahead	1668	// the beauty of JSON: you need exactly one character lookahead
1456	// to parse everything.	1669	// to parse everything.
1457	switch (*dec->cur)	1670	switch (*dec->cur)
1458	{	1671	{
1459	case '"': ++dec->cur; return decode_str (dec);	1672	case '"': ++dec->cur; return decode_str (dec);
1460	case '[': ++dec->cur; return decode_av (dec);	1673	case '[': ++dec->cur; return decode_av (dec);
1461	case '{': ++dec->cur; return decode_hv (dec);	1674	case '{': ++dec->cur; return decode_hv (dec);
		1675	case '(': return decode_tag (dec);
1462		1676
1463	case '-':	1677	case '-':
1464	case '0': case '1': case '2': case '3': case '4':	1678	case '0': case '1': case '2': case '3': case '4':
1465	case '5': case '6': case '7': case '8': case '9':	1679	case '5': case '6': case '7': case '8': case '9':
1466	return decode_num (dec);	1680	return decode_num (dec);
1467		1681
		1682	case 'f':
		1683	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
		1684	{
		1685	dec->cur += 5;
		1686
		1687	if (expect_false (!dec->json.v_false))
		1688	dec->json.v_false = GET_BOOL (false);
		1689
		1690	return newSVsv (dec->json.v_false);
		1691	}
		1692	else
		1693	ERR ("'false' expected");
		1694
		1695	break;
		1696
1468	case 't':	1697	case 't':
1469	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1698	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1470	{	1699	{
1471	dec->cur += 4;	1700	dec->cur += 4;
1472	#if JSON_SLOW	1701
1473	json_true = get_bool ("JSON::XS::true");	1702	if (expect_false (!dec->json.v_true))
1474	#endif	1703	dec->json.v_true = GET_BOOL (true);
		1704
1475	return newSVsv (json_true);	1705	return newSVsv (dec->json.v_true);
1476	}	1706	}
1477	else	1707	else
1478	ERR ("'true' expected");	1708	ERR ("'true' expected");
1479
1480	break;
1481
1482	case 'f':
1483	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1484	{
1485	dec->cur += 5;
1486	#if JSON_SLOW
1487	json_false = get_bool ("JSON::XS::false");
1488	#endif
1489	return newSVsv (json_false);
1490	}
1491	else
1492	ERR ("'false' expected");
1493		1709
1494	break;	1710	break;
1495		1711
1496	case 'n':	1712	case 'n':
1497	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	1713	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
…		…
1503	ERR ("'null' expected");	1719	ERR ("'null' expected");
1504		1720
1505	break;	1721	break;
1506		1722
1507	default:	1723	default:
1508	ERR ("malformed JSON string, neither array, object, number, string or atom");	1724	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1509	break;	1725	break;
1510	}	1726	}
1511		1727
1512	fail:	1728	fail:
1513	return 0;	1729	return 0;
1514	}	1730	}
1515		1731
1516	static SV *	1732	static SV *
1517	decode_json (SV string, JSON json, char **offset_return)	1733	decode_json (SV string, JSON json, STRLEN *offset_return)
1518	{	1734	{
1519	dec_t dec;	1735	dec_t dec;
1520	SV *sv;	1736	SV *sv;
1521		1737
1522	/* work around bugs in 5.10 where manipulating magic values	1738	/* work around bugs in 5.10 where manipulating magic values
1523	* will perl ignore the magic in subsequent accesses	1739	* makes perl ignore the magic in subsequent accesses.
		1740	* also make a copy of non-PV values, to get them into a clean
		1741	* state (SvPV should do that, but it's buggy, see below).
		1742	*
		1743	* SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
		1744	* as reported by Reini Urban.
1524	*/	1745	*/
1525	/SvGETMAGIC (string);/	1746	/SvGETMAGIC (string);/
1526	if (SvMAGICAL (string))	1747	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
1527	string = sv_2mortal (newSVsv (string));	1748	string = sv_2mortal (newSVsv (string));
1528		1749
1529	SvUPGRADE (string, SVt_PV);	1750	SvUPGRADE (string, SVt_PV);
1530		1751
1531	/* work around a bug in perl 5.10, which causes SvCUR to fail an	1752	/* work around a bug in perl 5.10, which causes SvCUR to fail an
…		…
1548	if (offset > json->max_size && json->max_size)	1769	if (offset > json->max_size && json->max_size)
1549	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1770	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1550	(unsigned long)SvCUR (string), (unsigned long)json->max_size);	1771	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
1551	}	1772	}
1552		1773
1553	if (json->flags & F_UTF8)	1774	if (DECODE_WANTS_OCTETS (json))
1554	sv_utf8_downgrade (string, 0);	1775	sv_utf8_downgrade (string, 0);
1555	else	1776	else
1556	sv_utf8_upgrade (string);	1777	sv_utf8_upgrade (string);
1557		1778
1558	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1779	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
…		…
1570		1791
1571	decode_ws (&dec);	1792	decode_ws (&dec);
1572	sv = decode_sv (&dec);	1793	sv = decode_sv (&dec);
1573		1794
1574	if (offset_return)	1795	if (offset_return)
1575	*offset_return = dec.cur;	1796	*offset_return = dec.cur - SvPVX (string);
1576		1797	else if (sv)
1577	if (!(offset_return \|\| !sv))
1578	{	1798	{
1579	// check for trailing garbage	1799	// check for trailing garbage
1580	decode_ws (&dec);	1800	decode_ws (&dec);
1581		1801
1582	if (*dec.cur)	1802	if (dec.cur != dec.end)
1583	{	1803	{
1584	dec.err = "garbage after JSON object";	1804	dec.err = "garbage after JSON object";
1585	SvREFCNT_dec (sv);	1805	SvREFCNT_dec (sv);
1586	sv = 0;	1806	sv = 0;
1587	}	1807	}
…		…
1600	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1820	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1601	LEAVE;	1821	LEAVE;
1602		1822
1603	croak ("%s, at character offset %d (before \"%s\")",	1823	croak ("%s, at character offset %d (before \"%s\")",
1604	dec.err,	1824	dec.err,
1605	ptr_to_index (string, dec.cur),	1825	(int)ptr_to_index (string, dec.cur),
1606	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1826	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1607	}	1827	}
1608		1828
1609	sv = sv_2mortal (sv);	1829	sv = sv_2mortal (sv);
1610		1830
1611	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1831	if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1612	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1832	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1613		1833
1614	return sv;	1834	return sv;
1615	}	1835	}
1616		1836
…		…
1625	// the state machine here is a bit convoluted and could be simplified a lot	1845	// the state machine here is a bit convoluted and could be simplified a lot
1626	// but this would make it slower, so...	1846	// but this would make it slower, so...
1627		1847
1628	for (;;)	1848	for (;;)
1629	{	1849	{
1630	//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
1631	switch (self->incr_mode)	1850	switch (self->incr_mode)
1632	{	1851	{
		1852	// reached end of a scalar, see if we are inside a nested structure or not
		1853	end_of_scalar:
		1854	self->incr_mode = INCR_M_JSON;
		1855
		1856	if (self->incr_nest) // end of a scalar inside array, object or tag
		1857	goto incr_m_json;
		1858	else // end of scalar outside structure, json text ends here
		1859	goto interrupt;
		1860
1633	// only used for initial whitespace skipping	1861	// only used for initial whitespace skipping
1634	case INCR_M_WS:	1862	case INCR_M_WS:
1635	for (;;)	1863	for (;;)
1636	{	1864	{
1637	if (*p > 0x20)	1865	if (*p > 0x20)
…		…
1679	++p;	1907	++p;
1680	}	1908	}
1681		1909
1682	break;	1910	break;
1683		1911
		1912	// inside true/false/null
		1913	case INCR_M_TFN:
		1914	incr_m_tfn:
		1915	for (;;)
		1916	switch (*p++)
		1917	{
		1918	case 'r': case 'u': case 'e': // tRUE, falsE, nUll
		1919	case 'a': case 'l': case 's': // fALSe, nuLL
		1920	// allowed
		1921	break;
		1922
		1923	default:
		1924	--p;
		1925	goto end_of_scalar;
		1926	}
		1927
		1928	// inside a number
		1929	case INCR_M_NUM:
		1930	incr_m_num:
		1931	for (;;)
		1932	switch (*p++)
		1933	{
		1934	case 'e': case 'E': case '.': case '+':
		1935	case '-':
		1936	case '0': case '1': case '2': case '3': case '4':
		1937	case '5': case '6': case '7': case '8': case '9':
		1938	// allowed
		1939	break;
		1940
		1941	default:
		1942	--p;
		1943	goto end_of_scalar;
		1944	}
		1945
1684	// inside a string	1946	// inside a string
1685	case INCR_M_STR:	1947	case INCR_M_STR:
1686	incr_m_str:	1948	incr_m_str:
1687	for (;;)	1949	for (;;)
1688	{	1950	{
1689	if (*p == '"')	1951	if (*p == '"')
1690	{	1952	{
1691	++p;	1953	++p;
1692	self->incr_mode = INCR_M_JSON;
1693
1694	if (!self->incr_nest)
1695	goto interrupt;
1696
1697	goto incr_m_json;	1954	goto end_of_scalar;
1698	}	1955	}
1699	else if (*p == '\\')	1956	else if (*p == '\\')
1700	{	1957	{
1701	++p; // "virtually" consumes character after \	1958	++p; // "virtually" consumes character after \
1702		1959
…		…
1732	--p; // do not eat the whitespace, let the next round do it	1989	--p; // do not eat the whitespace, let the next round do it
1733	goto interrupt;	1990	goto interrupt;
1734	}	1991	}
1735	break;	1992	break;
1736		1993
		1994	// the following three blocks handle scalars. this makes the parser
		1995	// more strict than required inside arrays or objects, and could
		1996	// be moved to a special case on the toplevel (except strings)
		1997	case 't':
		1998	case 'f':
		1999	case 'n':
		2000	self->incr_mode = INCR_M_TFN;
		2001	goto incr_m_tfn;
		2002
		2003	case '-':
		2004	case '0': case '1': case '2': case '3': case '4':
		2005	case '5': case '6': case '7': case '8': case '9':
		2006	self->incr_mode = INCR_M_NUM;
		2007	goto incr_m_num;
		2008
1737	case '"':	2009	case '"':
1738	self->incr_mode = INCR_M_STR;	2010	self->incr_mode = INCR_M_STR;
1739	goto incr_m_str;	2011	goto incr_m_str;
1740		2012
1741	case '[':	2013	case '[':
1742	case '{':	2014	case '{':
		2015	case '(':
1743	if (++self->incr_nest > self->max_depth)	2016	if (++self->incr_nest > self->max_depth)
1744	croak (ERR_NESTING_EXCEEDED);	2017	croak (ERR_NESTING_EXCEEDED);
1745	break;	2018	break;
1746		2019
1747	case ']':	2020	case ']':
1748	case '}':	2021	case '}':
1749	if (--self->incr_nest <= 0)	2022	if (--self->incr_nest <= 0)
1750	goto interrupt;	2023	goto interrupt;
		2024	break;
		2025
		2026	case ')':
		2027	--self->incr_nest;
1751	break;	2028	break;
1752		2029
1753	case '#':	2030	case '#':
1754	self->incr_mode = INCR_M_C1;	2031	self->incr_mode = INCR_M_C1;
1755	goto incr_m_c;	2032	goto incr_m_c;
…		…
1781	i >= '0' && i <= '9' ? i - '0'	2058	i >= '0' && i <= '9' ? i - '0'
1782	: i >= 'a' && i <= 'f' ? i - 'a' + 10	2059	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1783	: i >= 'A' && i <= 'F' ? i - 'A' + 10	2060	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1784	: -1;	2061	: -1;
1785		2062
1786	json_stash = gv_stashpv ("JSON::XS" , 1);	2063	json_stash = gv_stashpv ("JSON::XS" , 1);
1787	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	2064	bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1788
1789	json_true = get_bool ("JSON::XS::true");
1790	json_false = get_bool ("JSON::XS::false");	2065	bool_false = get_bool ("Types::Serialiser::false");
		2066	bool_true = get_bool ("Types::Serialiser::true");
		2067
		2068	sv_json = newSVpv ("JSON", 0);
		2069	SvREADONLY_on (sv_json);
1791		2070
1792	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */	2071	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1793	}	2072	}
1794		2073
1795	PROTOTYPES: DISABLE	2074	PROTOTYPES: DISABLE
1796		2075
1797	void CLONE (...)	2076	void CLONE (...)
1798	CODE:	2077	CODE:
		2078	// as long as these writes are atomic, the race should not matter
		2079	// as existing threads either already use 0, or use the old value,
		2080	// which is sitll correct for the initial thread.
1799	json_stash = 0;	2081	json_stash = 0;
1800	json_boolean_stash = 0;	2082	bool_stash = 0;
		2083	bool_false = 0;
		2084	bool_true = 0;
1801		2085
1802	void new (char *klass)	2086	void new (char *klass)
1803	PPCODE:	2087	PPCODE:
1804	{	2088	{
1805	SV *pv = NEWSV (0, sizeof (JSON));	2089	SV *pv = NEWSV (0, sizeof (JSON));
1806	SvPOK_only (pv);	2090	SvPOK_only (pv);
1807	json_init ((JSON *)SvPVX (pv));	2091	json_init ((JSON *)SvPVX (pv));
1808	XPUSHs (sv_2mortal (sv_bless (	2092	XPUSHs (sv_2mortal (sv_bless (
1809	newRV_noinc (pv),	2093	newRV_noinc (pv),
1810	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	2094	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1811	)));	2095	)));
1812	}	2096	}
		2097
		2098	void boolean_values (JSON self, SV v_false = 0, SV *v_true = 0)
		2099	PPCODE:
		2100	self->v_false = newSVsv (v_false);
		2101	self->v_true = newSVsv (v_true);
		2102	XPUSHs (ST (0));
		2103
		2104	void get_boolean_values (JSON *self)
		2105	PPCODE:
		2106	if (self->v_false && self->v_true)
		2107	{
		2108	EXTEND (SP, 2);
		2109	PUSHs (self->v_false);
		2110	PUSHs (self->v_true);
		2111	}
1813		2112
1814	void ascii (JSON *self, int enable = 1)	2113	void ascii (JSON *self, int enable = 1)
1815	ALIAS:	2114	ALIAS:
1816	ascii = F_ASCII	2115	ascii = F_ASCII
1817	latin1 = F_LATIN1	2116	latin1 = F_LATIN1
…		…
1825	shrink = F_SHRINK	2124	shrink = F_SHRINK
1826	allow_blessed = F_ALLOW_BLESSED	2125	allow_blessed = F_ALLOW_BLESSED
1827	convert_blessed = F_CONV_BLESSED	2126	convert_blessed = F_CONV_BLESSED
1828	relaxed = F_RELAXED	2127	relaxed = F_RELAXED
1829	allow_unknown = F_ALLOW_UNKNOWN	2128	allow_unknown = F_ALLOW_UNKNOWN
		2129	allow_tags = F_ALLOW_TAGS
1830	PPCODE:	2130	PPCODE:
1831	{	2131	{
1832	if (enable)	2132	if (enable)
1833	self->flags \|= ix;	2133	self->flags \|= ix;
1834	else	2134	else
…		…
1850	get_shrink = F_SHRINK	2150	get_shrink = F_SHRINK
1851	get_allow_blessed = F_ALLOW_BLESSED	2151	get_allow_blessed = F_ALLOW_BLESSED
1852	get_convert_blessed = F_CONV_BLESSED	2152	get_convert_blessed = F_CONV_BLESSED
1853	get_relaxed = F_RELAXED	2153	get_relaxed = F_RELAXED
1854	get_allow_unknown = F_ALLOW_UNKNOWN	2154	get_allow_unknown = F_ALLOW_UNKNOWN
		2155	get_allow_tags = F_ALLOW_TAGS
1855	PPCODE:	2156	PPCODE:
1856	XPUSHs (boolSV (self->flags & ix));	2157	XPUSHs (boolSV (self->flags & ix));
1857		2158
1858	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)	2159	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1859	PPCODE:	2160	PPCODE:
…		…
1887	}	2188	}
1888		2189
1889	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2190	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1890	PPCODE:	2191	PPCODE:
1891	{	2192	{
1892	if (!self->cb_sk_object)	2193	if (!self->cb_sk_object)
1893	self->cb_sk_object = newHV ();	2194	self->cb_sk_object = newHV ();
1894		2195
1895	if (SvOK (cb))	2196	if (SvOK (cb))
1896	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2197	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1897	else	2198	else
…		…
1908	XPUSHs (ST (0));	2209	XPUSHs (ST (0));
1909	}	2210	}
1910		2211
1911	void encode (JSON self, SV scalar)	2212	void encode (JSON self, SV scalar)
1912	PPCODE:	2213	PPCODE:
1913	XPUSHs (encode_json (scalar, self));	2214	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2215	XPUSHs (scalar);
1914		2216
1915	void decode (JSON self, SV jsonstr)	2217	void decode (JSON self, SV jsonstr)
1916	PPCODE:	2218	PPCODE:
1917	XPUSHs (decode_json (jsonstr, self, 0));	2219	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2220	XPUSHs (jsonstr);
1918		2221
1919	void decode_prefix (JSON self, SV jsonstr)	2222	void decode_prefix (JSON self, SV jsonstr)
1920	PPCODE:	2223	PPCODE:
1921	{	2224	{
1922	char *offset;	2225	SV *sv;
		2226	STRLEN offset;
		2227	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1923	EXTEND (SP, 2);	2228	EXTEND (SP, 2);
1924	PUSHs (decode_json (jsonstr, self, &offset));	2229	PUSHs (sv);
1925	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));	2230	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
1926	}	2231	}
1927		2232
1928	void incr_parse (JSON self, SV jsonstr = 0)	2233	void incr_parse (JSON self, SV jsonstr = 0)
1929	PPCODE:	2234	PPCODE:
1930	{	2235	{
1931	if (!self->incr_text)	2236	if (!self->incr_text)
1932	self->incr_text = newSVpvn ("", 0);	2237	self->incr_text = newSVpvn ("", 0);
		2238
		2239	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2240	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2241	if (DECODE_WANTS_OCTETS (self))
		2242	{
		2243	if (self->incr_pos)
		2244	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2245	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2246
		2247	sv_utf8_downgrade (self->incr_text, 0);
		2248	}
		2249	else
		2250	{
		2251	sv_utf8_upgrade (self->incr_text);
		2252
		2253	if (self->incr_pos)
		2254	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2255	- (U8 *)SvPVX (self->incr_text);
		2256	}
1933		2257
1934	// append data, if any	2258	// append data, if any
1935	if (jsonstr)	2259	if (jsonstr)
1936	{	2260	{
		2261	/* make sure both strings have same encoding */
		2262	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
1937	if (SvUTF8 (jsonstr))	2263	if (SvUTF8 (jsonstr))
		2264	sv_utf8_downgrade (jsonstr, 0);
1938	{	2265	else
1939	if (!SvUTF8 (self->incr_text))
1940	{
1941	/* utf-8-ness differs, need to upgrade */
1942	sv_utf8_upgrade (self->incr_text);
1943
1944	if (self->incr_pos)
1945	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
1946	- (U8 *)SvPVX (self->incr_text);
1947	}
1948	}
1949	else if (SvUTF8 (self->incr_text))
1950	sv_utf8_upgrade (jsonstr);	2266	sv_utf8_upgrade (jsonstr);
1951		2267
		2268	/* and then just blindly append */
1952	{	2269	{
1953	STRLEN len;	2270	STRLEN len;
1954	const char *str = SvPV (jsonstr, len);	2271	const char *str = SvPV (jsonstr, len);
1955	STRLEN cur = SvCUR (self->incr_text);	2272	STRLEN cur = SvCUR (self->incr_text);
1956		2273
1957	if (SvLEN (self->incr_text) <= cur + len)	2274	if (SvLEN (self->incr_text) - cur <= len)
1958	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	2275	json_sv_grow (self->incr_text, cur, len);
1959		2276
1960	Move (str, SvEND (self->incr_text), len, char);	2277	Move (str, SvEND (self->incr_text), len, char);
1961	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);	2278	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
1962	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there	2279	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1963	}	2280	}
1964	}	2281	}
1965		2282
1966	if (GIMME_V != G_VOID)	2283	if (GIMME_V != G_VOID)
1967	do	2284	do
1968	{	2285	{
		2286	SV *sv;
1969	char *offset;	2287	STRLEN offset;
1970		2288
1971	if (!INCR_DONE (self))	2289	if (!INCR_DONE (self))
1972	{	2290	{
1973	incr_parse (self);	2291	incr_parse (self);
1974		2292
1975	if (self->incr_pos > self->max_size && self->max_size)	2293	if (self->incr_pos > self->max_size && self->max_size)
1976	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	2294	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1977	(unsigned long)self->incr_pos, (unsigned long)self->max_size);	2295	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
1978		2296
1979	if (!INCR_DONE (self))	2297	if (!INCR_DONE (self))
		2298	{
		2299	// as an optimisation, do not accumulate white space in the incr buffer
		2300	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2301	{
		2302	self->incr_pos = 0;
		2303	SvCUR_set (self->incr_text, 0);
		2304	}
		2305
1980	break;	2306	break;
		2307	}
1981	}	2308	}
1982		2309
1983	XPUSHs (decode_json (self->incr_text, self, &offset));	2310	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2311	XPUSHs (sv);
1984		2312
1985	self->incr_pos -= offset - SvPVX (self->incr_text);	2313	self->incr_pos -= offset;
1986	self->incr_nest = 0;	2314	self->incr_nest = 0;
1987	self->incr_mode = 0;	2315	self->incr_mode = 0;
1988		2316
1989	sv_chop (self->incr_text, offset);	2317	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
1990	}	2318	}
1991	while (GIMME_V == G_ARRAY);	2319	while (GIMME_V == G_ARRAY);
1992	}	2320	}
1993		2321
1994	SV incr_text (JSON self)	2322	SV incr_text (JSON self)
…		…
2025	self->incr_mode = 0;	2353	self->incr_mode = 0;
2026	}	2354	}
2027		2355
2028	void DESTROY (JSON *self)	2356	void DESTROY (JSON *self)
2029	CODE:	2357	CODE:
		2358	SvREFCNT_dec (self->v_false);
		2359	SvREFCNT_dec (self->v_true);
2030	SvREFCNT_dec (self->cb_sk_object);	2360	SvREFCNT_dec (self->cb_sk_object);
2031	SvREFCNT_dec (self->cb_object);	2361	SvREFCNT_dec (self->cb_object);
2032	SvREFCNT_dec (self->incr_text);	2362	SvREFCNT_dec (self->incr_text);
2033		2363
2034	PROTOTYPES: ENABLE	2364	PROTOTYPES: ENABLE
2035		2365
2036	void encode_json (SV *scalar)	2366	void encode_json (SV *scalar)
2037	ALIAS:
2038	to_json_ = 0
2039	encode_json = F_UTF8
2040	PPCODE:	2367	PPCODE:
2041	{	2368	{
2042	JSON json;	2369	JSON json;
2043	json_init (&json);	2370	json_init (&json);
2044	json.flags \|= ix;	2371	json.flags \|= F_UTF8;
2045	XPUSHs (encode_json (scalar, &json));	2372	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2373	XPUSHs (scalar);
2046	}	2374	}
2047		2375
2048	void decode_json (SV *jsonstr)	2376	void decode_json (SV *jsonstr)
2049	ALIAS:
2050	from_json_ = 0
2051	decode_json = F_UTF8
2052	PPCODE:	2377	PPCODE:
2053	{	2378	{
2054	JSON json;	2379	JSON json;
2055	json_init (&json);	2380	json_init (&json);
2056	json.flags \|= ix;	2381	json.flags \|= F_UTF8;
2057	XPUSHs (decode_json (jsonstr, &json, 0));	2382	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2383	XPUSHs (jsonstr);
2058	}	2384	}
2059		2385

Diff Legend

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+Removed lines
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+Changed lines
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+Changed lines

Comparing JSON-XS/XS.xs (file contents): Revision 1.107 by root, Wed Mar 17 01:45:43 2010 UTC vs. Revision 1.136 by root, Thu Nov 15 22:35:35 2018 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.107 by root, Wed Mar 17 01:45:43 2010 UTC vs.
Revision 1.136 by root, Thu Nov 15 22:35:35 2018 UTC