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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.113 by root, Thu Aug 11 21:37:41 2011 UTC vs.
Revision 1.141 by root, Tue Oct 27 18:05:58 2020 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
46		59
47	#define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8)	60	#define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8)
…		…
65	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	78	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
66		79
67	#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?)"
68		81
69	#ifdef USE_ITHREADS	82	#ifdef USE_ITHREADS
70	# define JSON_SLOW 1
71	# 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))
72	#else	86	#else
73	# define JSON_SLOW 0
74	# define JSON_STASH json_stash	87	# define JSON_STASH json_stash
		88	# define BOOL_STASH bool_stash
		89	# define GET_BOOL(value) bool_ ## value
75	#endif	90	#endif
76		91
77	static HV json_stash, json_boolean_stash; // JSON::XS::	92	// the amount of HEs to allocate on the stack, when sorting keys
78	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;
79		98
80	enum {	99	enum {
81	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
82	INCR_M_STR, // inside string	103	INCR_M_STR, // inside string
83	INCR_M_BS, // inside backslash	104	INCR_M_BS, // inside backslash
84	INCR_M_C0, // inside comment in initial whitespace sequence	105	INCR_M_C0, // inside comment in initial whitespace sequence
85	INCR_M_C1, // inside comment in other places	106	INCR_M_C1, // inside comment in other places
86	INCR_M_JSON // outside anything, count nesting	107	INCR_M_JSON // outside anything, count nesting
…		…
99	// for the incremental parser	120	// for the incremental parser
100	SV *incr_text; // the source text so far	121	SV *incr_text; // the source text so far
101	STRLEN incr_pos; // the current offset into the text	122	STRLEN incr_pos; // the current offset into the text
102	int incr_nest; // {[]}-nesting level	123	int incr_nest; // {[]}-nesting level
103	unsigned char incr_mode;	124	unsigned char incr_mode;
		125
		126	SV v_false, v_true;
104	} JSON;	127	} JSON;
105		128
106	INLINE void	129	INLINE void
107	json_init (JSON *json)	130	json_init (JSON *json)
108	{	131	{
109	Zero (json, 1, JSON);	132	static const JSON init = { F_ALLOW_NONREF, 512 };
110	json->max_depth = 512;	133
		134	*json = init;
111	}	135	}
112		136
113	/////////////////////////////////////////////////////////////////////////////	137	/////////////////////////////////////////////////////////////////////////////
114	// utility functions	138	// utility functions
115		139
…		…
137	SvPV_renew (sv, SvCUR (sv) + 1);	161	SvPV_renew (sv, SvCUR (sv) + 1);
138	#endif	162	#endif
139	}	163	}
140	}	164	}
141		165
		166	/* adds two STRLENs together, slow, and with paranoia */
		167	static 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
142	// 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
143	// case of an error.	192	// case of an error.
144	// we special-case "safe" characters from U+80 .. U+7FF,	193	// we special-case "safe" characters from U+80 .. U+7FF,
145	// but use the very good perl function to parse anything else.	194	// but use the very good perl function to parse anything else.
146	// note that we never call this function for a ascii codepoints	195	// note that we never call this function for a ascii codepoints
147	INLINE UV	196	INLINE UV
…		…
284	// a recursion depth of ten gives us >>500 bits	333	// a recursion depth of ten gives us >>500 bits
285	json_atof_scan1 (s, &accum, &expo, 0, 10);	334	json_atof_scan1 (s, &accum, &expo, 0, 10);
286		335
287	return neg ? -accum : accum;	336	return neg ? -accum : accum;
288	}	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
289	/////////////////////////////////////////////////////////////////////////////	381	/////////////////////////////////////////////////////////////////////////////
290	// encoder	382	// encoder
291		383
292	// structure used for encoding JSON	384	// structure used for encoding JSON
293	typedef struct	385	typedef struct
…		…
301	} enc_t;	393	} enc_t;
302		394
303	INLINE void	395	INLINE void
304	need (enc_t *enc, STRLEN len)	396	need (enc_t *enc, STRLEN len)
305	{	397	{
306	if (expect_false (enc->cur + len >= enc->end))	398	if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
307	{	399	{
308	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	400	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
309	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	401	char *buf = json_sv_grow (enc->sv, cur, len);
310	enc->cur = SvPVX (enc->sv) + cur;	402	enc->cur = buf + cur;
311	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	403	enc->end = buf + SvLEN (enc->sv) - 1;
312	}	404	}
313	}	405	}
314		406
315	INLINE void	407	INLINE void
316	encode_ch (enc_t *enc, char ch)	408	encode_ch (enc_t *enc, char ch)
…		…
332		424
333	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case	425	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
334	{	426	{
335	if (expect_false (ch == '"')) // but with slow exceptions	427	if (expect_false (ch == '"')) // but with slow exceptions
336	{	428	{
337	need (enc, len += 1);	429	need (enc, len + 1);
338	*enc->cur++ = '\\';	430	*enc->cur++ = '\\';
339	*enc->cur++ = '"';	431	*enc->cur++ = '"';
340	}	432	}
341	else if (expect_false (ch == '\\'))	433	else if (expect_false (ch == '\\'))
342	{	434	{
343	need (enc, len += 1);	435	need (enc, len + 1);
344	*enc->cur++ = '\\';	436	*enc->cur++ = '\\';
345	*enc->cur++ = '\\';	437	*enc->cur++ = '\\';
346	}	438	}
347	else	439	else
348	*enc->cur++ = ch;	440	*enc->cur++ = ch;
…		…
351	}	443	}
352	else	444	else
353	{	445	{
354	switch (ch)	446	switch (ch)
355	{	447	{
356	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;
357	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;
358	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;
359	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;
360	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;
361		453
362	default:	454	default:
363	{	455	{
364	STRLEN clen;	456	STRLEN clen;
365	UV uch;	457	UV uch;
…		…
381	if (uch >= 0x10000UL)	473	if (uch >= 0x10000UL)
382	{	474	{
383	if (uch >= 0x110000UL)	475	if (uch >= 0x110000UL)
384	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);
385		477
386	need (enc, len += 11);	478	need (enc, len + 11);
387	sprintf (enc->cur, "\\u%04x\\u%04x",	479	sprintf (enc->cur, "\\u%04x\\u%04x",
388	(int)((uch - 0x10000) / 0x400 + 0xD800),	480	(int)((uch - 0x10000) / 0x400 + 0xD800),
389	(int)((uch - 0x10000) % 0x400 + 0xDC00));	481	(int)((uch - 0x10000) % 0x400 + 0xDC00));
390	enc->cur += 12;	482	enc->cur += 12;
391	}	483	}
392	else	484	else
393	{	485	{
394	need (enc, len += 5);	486	need (enc, len + 5);
395	*enc->cur++ = '\\';	487	*enc->cur++ = '\\';
396	*enc->cur++ = 'u';	488	*enc->cur++ = 'u';
397	*enc->cur++ = PL_hexdigit [ uch >> 12 ];	489	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
398	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];	490	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
399	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];	491	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
…		…
407	*enc->cur++ = uch;	499	*enc->cur++ = uch;
408	str += clen;	500	str += clen;
409	}	501	}
410	else if (is_utf8)	502	else if (is_utf8)
411	{	503	{
412	need (enc, len += clen);	504	need (enc, len + clen);
413	do	505	do
414	{	506	{
415	enc->cur++ = str++;	507	enc->cur++ = str++;
416	}	508	}
417	while (--clen);	509	while (--clen);
418	}	510	}
419	else	511	else
420	{	512	{
421	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
422	enc->cur = encode_utf8 (enc->cur, uch);	514	enc->cur = encode_utf8 (enc->cur, uch);
423	++str;	515	++str;
424	}	516	}
425	}	517	}
426	}	518	}
…		…
480		572
481	if (enc->indent >= enc->json.max_depth)	573	if (enc->indent >= enc->json.max_depth)
482	croak (ERR_NESTING_EXCEEDED);	574	croak (ERR_NESTING_EXCEEDED);
483		575
484	encode_ch (enc, '[');	576	encode_ch (enc, '[');
485		577
486	if (len >= 0)	578	if (len >= 0)
487	{	579	{
488	encode_nl (enc); ++enc->indent;	580	encode_nl (enc); ++enc->indent;
489		581
490	for (i = 0; i <= len; ++i)	582	for (i = 0; i <= len; ++i)
…		…
502	encode_comma (enc);	594	encode_comma (enc);
503	}	595	}
504		596
505	encode_nl (enc); --enc->indent; encode_indent (enc);	597	encode_nl (enc); --enc->indent; encode_indent (enc);
506	}	598	}
507		599
508	encode_ch (enc, ']');	600	encode_ch (enc, ']');
509	}	601	}
510		602
511	static void	603	static void
512	encode_hk (enc_t enc, HE he)	604	encode_hk (enc_t enc, HE he)
…		…
516	if (HeKLEN (he) == HEf_SVKEY)	608	if (HeKLEN (he) == HEf_SVKEY)
517	{	609	{
518	SV *sv = HeSVKEY (he);	610	SV *sv = HeSVKEY (he);
519	STRLEN len;	611	STRLEN len;
520	char *str;	612	char *str;
521		613
522	SvGETMAGIC (sv);	614	SvGETMAGIC (sv);
523	str = SvPV (sv, len);	615	str = SvPV (sv, len);
524		616
525	encode_str (enc, str, len, SvUTF8 (sv));	617	encode_str (enc, str, len, SvUTF8 (sv));
526	}	618	}
…		…
592	}	684	}
593		685
594	if (count)	686	if (count)
595	{	687	{
596	int i, fast = 1;	688	int i, fast = 1;
597	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	689	HE *hes_stack [STACK_HES];
598	HE *hes = _alloca (count sizeof (HE));	690	HE **hes = hes_stack;
599	#else	691
600	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	692	// allocate larger arrays on the heap
601	#endif	693	if (count > STACK_HES)
		694	{
		695	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		696	hes = (HE **)SvPVX (sv);
		697	}
602		698
603	i = 0;	699	i = 0;
604	while ((he = hv_iternext (hv)))	700	while ((he = hv_iternext (hv)))
605	{	701	{
606	hes [i++] = he;	702	hes [i++] = he;
…		…
675	// encode objects, arrays and special \0=false and \1=true values.	771	// encode objects, arrays and special \0=false and \1=true values.
676	static void	772	static void
677	encode_rv (enc_t enc, SV sv)	773	encode_rv (enc_t enc, SV sv)
678	{	774	{
679	svtype svt;	775	svtype svt;
		776	GV *method;
680		777
681	SvGETMAGIC (sv);	778	SvGETMAGIC (sv);
682	svt = SvTYPE (sv);	779	svt = SvTYPE (sv);
683		780
684	if (expect_false (SvOBJECT (sv)))	781	if (expect_false (SvOBJECT (sv)))
685	{	782	{
686	HV *stash = !JSON_SLOW \|\| json_boolean_stash	783	HV *stash = SvSTASH (sv);
687	? json_boolean_stash
688	: gv_stashpv ("JSON::XS::Boolean", 1);
689		784
690	if (SvSTASH (sv) == stash)	785	if (stash == bool_stash)
691	{	786	{
692	if (SvIV (sv))
693	encode_str (enc, "true", 4, 0);	787	if (SvIV (sv)) encode_str (enc, "true" , 4, 0);
694	else
695	encode_str (enc, "false", 5, 0);	788	else encode_str (enc, "false", 5, 0);
696	}	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	PUTBACK;
		832
		833	encode_ch (enc, ']');
		834
		835	FREETMPS; LEAVE;
		836	}
		837	else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
		838	{
		839	dSP;
		840
		841	ENTER; SAVETMPS;
		842	PUSHMARK (SP);
		843	// we re-bless the reference to get overload and other niceties right
		844	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		845
		846	// calling with G_SCALAR ensures that we always get a 1 return value
		847	PUTBACK;
		848	call_sv ((SV *)GvCV (method), G_SCALAR);
		849	SPAGAIN;
		850
		851	// catch this surprisingly common error
		852	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		853	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		854
		855	sv = POPs;
		856	PUTBACK;
		857
		858	encode_sv (enc, sv);
		859
		860	FREETMPS; LEAVE;
		861	}
		862	else if (enc->json.flags & F_ALLOW_BLESSED)
		863	encode_str (enc, "null", 4, 0);
697	else	864	else
698	{
699	#if 0
700	if (0 && sv_derived_from (rv, "JSON::Literal"))
701	{
702	// not yet
703	}
704	#endif
705	if (enc->json.flags & F_CONV_BLESSED)
706	{
707	// we re-bless the reference to get overload and other niceties right
708	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
709
710	if (to_json)
711	{
712	dSP;
713
714	ENTER; SAVETMPS; PUSHMARK (SP);
715	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
716
717	// calling with G_SCALAR ensures that we always get a 1 return value
718	PUTBACK;
719	call_sv ((SV *)GvCV (to_json), G_SCALAR);
720	SPAGAIN;
721
722	// catch this surprisingly common error
723	if (SvROK (TOPs) && SvRV (TOPs) == sv)
724	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
725
726	sv = POPs;
727	PUTBACK;
728
729	encode_sv (enc, sv);
730
731	FREETMPS; LEAVE;
732	}
733	else if (enc->json.flags & F_ALLOW_BLESSED)
734	encode_str (enc, "null", 4, 0);
735	else
736	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
737	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
738	}
739	else if (enc->json.flags & F_ALLOW_BLESSED)
740	encode_str (enc, "null", 4, 0);
741	else
742	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	865	croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
743	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	866	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
744	}
745	}	867	}
746	else if (svt == SVt_PVHV)	868	else if (svt == SVt_PVHV)
747	encode_hv (enc, (HV *)sv);	869	encode_hv (enc, (HV *)sv);
748	else if (svt == SVt_PVAV)	870	else if (svt == SVt_PVAV)
749	encode_av (enc, (AV *)sv);	871	encode_av (enc, (AV *)sv);
750	else if (svt < SVt_PVAV)	872	else if (svt < SVt_PVAV)
751	{	873	{
752	STRLEN len = 0;	874	int bool_type = ref_bool_type (sv);
753	char *pv = svt ? SvPV (sv, len) : 0;
754		875
755	if (len == 1 && *pv == '1')	876	if (bool_type == 1)
756	encode_str (enc, "true", 4, 0);	877	encode_str (enc, "true", 4, 0);
757	else if (len == 1 && *pv == '0')	878	else if (bool_type == 0)
758	encode_str (enc, "false", 5, 0);	879	encode_str (enc, "false", 5, 0);
759	else if (enc->json.flags & F_ALLOW_UNKNOWN)	880	else if (enc->json.flags & F_ALLOW_UNKNOWN)
760	encode_str (enc, "null", 4, 0);	881	encode_str (enc, "null", 4, 0);
761	else	882	else
762	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	883	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
…		…
825	}	946	}
826	else	947	else
827	{	948	{
828	// large integer, use the (rather slow) snprintf way.	949	// large integer, use the (rather slow) snprintf way.
829	need (enc, IVUV_MAXCHARS);	950	need (enc, IVUV_MAXCHARS);
830	enc->cur +=	951	enc->cur +=
831	SvIsUV(sv)	952	SvIsUV(sv)
832	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	953	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
833	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	954	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
834	}	955	}
835	}	956	}
836	else if (SvROK (sv))	957	else if (SvROK (sv))
837	encode_rv (enc, SvRV (sv));	958	encode_rv (enc, SvRV (sv));
838	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)	959	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
839	encode_str (enc, "null", 4, 0);	960	encode_str (enc, "null", 4, 0);
840	else	961	else
841	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	962	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
842	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	963	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
843	}	964	}
844		965
845	static SV *	966	static SV *
846	encode_json (SV scalar, JSON json)	967	encode_json (SV scalar, JSON json)
847	{	968	{
848	enc_t enc;	969	enc_t enc;
849		970
850	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	971	if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
851	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	972	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
852		973
853	enc.json = *json;	974	enc.json = *json;
854	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	975	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
855	enc.cur = SvPVX (enc.sv);	976	enc.cur = SvPVX (enc.sv);
…		…
917	else	1038	else
918	break;	1039	break;
919	}	1040	}
920	else if (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)	1041	else if (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)
921	break; // parse error, but let higher level handle it, gives better error messages	1042	break; // parse error, but let higher level handle it, gives better error messages
922		1043	else
923	++dec->cur;	1044	++dec->cur;
924	}	1045	}
925	}	1046	}
926		1047
927	#define ERR(reason) SB dec->err = reason; goto fail; SE	1048	#define ERR(reason) SB dec->err = reason; goto fail; SE
928		1049
…		…
1062	cur++ = dec_cur++;	1183	cur++ = dec_cur++;
1063	while (--clen);	1184	while (--clen);
1064		1185
1065	utf8 = 1;	1186	utf8 = 1;
1066	}	1187	}
		1188	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1189	*cur++ = ch;
1067	else	1190	else
1068	{	1191	{
1069	--dec_cur;	1192	--dec_cur;
1070		1193
1071	if (!ch)	1194	if (!ch)
…		…
1081		1204
1082	if (sv)	1205	if (sv)
1083	{	1206	{
1084	STRLEN cur = SvCUR (sv);	1207	STRLEN cur = SvCUR (sv);
1085		1208
1086	if (SvLEN (sv) <= cur + len)	1209	if (SvLEN (sv) - cur <= len)
1087	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	1210	json_sv_grow (sv, cur, len);
1088		1211
1089	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1212	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
1090	SvCUR_set (sv, SvCUR (sv) + len);	1213	SvCUR_set (sv, SvCUR (sv) + len);
1091	}	1214	}
1092	else	1215	else
…		…
1259	if (*dec->cur == ']')	1382	if (*dec->cur == ']')
1260	{	1383	{
1261	++dec->cur;	1384	++dec->cur;
1262	break;	1385	break;
1263	}	1386	}
1264		1387
1265	if (*dec->cur != ',')	1388	if (*dec->cur != ',')
1266	ERR (", or ] expected while parsing array");	1389	ERR (", or ] expected while parsing array");
1267		1390
1268	++dec->cur;	1391	++dec->cur;
1269		1392
…		…
1383		1506
1384	DEC_DEC_DEPTH;	1507	DEC_DEC_DEPTH;
1385	sv = newRV_noinc ((SV *)hv);	1508	sv = newRV_noinc ((SV *)hv);
1386		1509
1387	// check filter callbacks	1510	// check filter callbacks
1388	if (dec->json.flags & F_HOOK)	1511	if (expect_false (dec->json.flags & F_HOOK))
1389	{	1512	{
1390	if (dec->json.cb_sk_object && HvKEYS (hv) == 1)	1513	if (dec->json.cb_sk_object && HvKEYS (hv) == 1)
1391	{	1514	{
1392	HE cb, he;	1515	HE cb, he;
1393		1516
1394	hv_iterinit (hv);	1517	hv_iterinit (hv);
1395	he = hv_iternext (hv);	1518	he = hv_iternext (hv);
1396	hv_iterinit (hv);	1519	hv_iterinit (hv);
1397		1520
1398	// the next line creates a mortal sv each time its called.	1521	// the next line creates a mortal sv each time it's called.
1399	// might want to optimise this for common cases.	1522	// might want to optimise this for common cases.
1400	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);	1523	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1401		1524
1402	if (cb)	1525	if (cb)
1403	{	1526	{
1404	dSP;	1527	dSP;
1405	int count;	1528	int count;
1406		1529
1407	ENTER; SAVETMPS; PUSHMARK (SP);	1530	ENTER; SAVETMPS;
		1531	PUSHMARK (SP);
1408	XPUSHs (HeVAL (he));	1532	XPUSHs (HeVAL (he));
1409	sv_2mortal (sv);	1533	sv_2mortal (sv);
1410		1534
1411	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1535	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1412		1536
1413	if (count == 1)	1537	if (count == 1)
1414	{	1538	{
1415	sv = newSVsv (POPs);	1539	sv = newSVsv (POPs);
		1540	PUTBACK;
1416	FREETMPS; LEAVE;	1541	FREETMPS; LEAVE;
1417	return sv;	1542	return sv;
1418	}	1543	}
		1544	else if (count)
		1545	croak ("filter_json_single_key_object callbacks must not return more than one scalar");
		1546
		1547	PUTBACK;
1419		1548
1420	SvREFCNT_inc (sv);	1549	SvREFCNT_inc (sv);
		1550
1421	FREETMPS; LEAVE;	1551	FREETMPS; LEAVE;
1422	}	1552	}
1423	}	1553	}
1424		1554
1425	if (dec->json.cb_object)	1555	if (dec->json.cb_object)
1426	{	1556	{
1427	dSP;	1557	dSP;
1428	int count;	1558	int count;
1429		1559
1430	ENTER; SAVETMPS; PUSHMARK (SP);	1560	ENTER; SAVETMPS;
		1561	PUSHMARK (SP);
1431	XPUSHs (sv_2mortal (sv));	1562	XPUSHs (sv_2mortal (sv));
1432		1563
1433	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1564	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1434		1565
1435	if (count == 1)	1566	if (count == 1)
1436	{
1437	sv = newSVsv (POPs);	1567	sv = newSVsv (POPs);
1438	FREETMPS; LEAVE;	1568	else if (count == 0)
1439	return sv;
1440	}
1441
1442	SvREFCNT_inc (sv);	1569	SvREFCNT_inc (sv);
		1570	else
		1571	croak ("filter_json_object callbacks must not return more than one scalar");
		1572
		1573	PUTBACK;
		1574
1443	FREETMPS; LEAVE;	1575	FREETMPS; LEAVE;
1444	}	1576	}
1445	}	1577	}
1446		1578
1447	return sv;	1579	return sv;
…		…
1451	DEC_DEC_DEPTH;	1583	DEC_DEC_DEPTH;
1452	return 0;	1584	return 0;
1453	}	1585	}
1454		1586
1455	static SV *	1587	static SV *
		1588	decode_tag (dec_t *dec)
		1589	{
		1590	SV *tag = 0;
		1591	SV *val = 0;
		1592
		1593	if (!(dec->json.flags & F_ALLOW_TAGS))
		1594	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1595
		1596	++dec->cur;
		1597
		1598	decode_ws (dec);
		1599
		1600	tag = decode_sv (dec);
		1601	if (!tag)
		1602	goto fail;
		1603
		1604	if (!SvPOK (tag))
		1605	ERR ("malformed JSON string, (tag) must be a string");
		1606
		1607	decode_ws (dec);
		1608
		1609	if (*dec->cur != ')')
		1610	ERR (") expected after tag");
		1611
		1612	++dec->cur;
		1613
		1614	decode_ws (dec);
		1615
		1616	val = decode_sv (dec);
		1617	if (!val)
		1618	goto fail;
		1619
		1620	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1621	ERR ("malformed JSON string, tag value must be an array");
		1622
		1623	{
		1624	AV av = (AV )SvRV (val);
		1625	int i, len = av_len (av) + 1;
		1626	HV *stash = gv_stashsv (tag, 0);
		1627	SV *sv;
		1628
		1629	if (!stash)
		1630	ERR ("cannot decode perl-object (package does not exist)");
		1631
		1632	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1633
		1634	if (!method)
		1635	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1636
		1637	dSP;
		1638
		1639	ENTER; SAVETMPS;
		1640	PUSHMARK (SP);
		1641	EXTEND (SP, len + 2);
		1642	// we re-bless the reference to get overload and other niceties right
		1643	PUSHs (tag);
		1644	PUSHs (sv_json);
		1645
		1646	for (i = 0; i < len; ++i)
		1647	PUSHs (*av_fetch (av, i, 1));
		1648
		1649	PUTBACK;
		1650	call_sv ((SV *)GvCV (method), G_SCALAR);
		1651	SPAGAIN;
		1652
		1653	SvREFCNT_dec (tag);
		1654	SvREFCNT_dec (val);
		1655	sv = SvREFCNT_inc (POPs);
		1656
		1657	PUTBACK;
		1658
		1659	FREETMPS; LEAVE;
		1660
		1661	return sv;
		1662	}
		1663
		1664	fail:
		1665	SvREFCNT_dec (tag);
		1666	SvREFCNT_dec (val);
		1667	return 0;
		1668	}
		1669
		1670	static SV *
1456	decode_sv (dec_t *dec)	1671	decode_sv (dec_t *dec)
1457	{	1672	{
1458	// the beauty of JSON: you need exactly one character lookahead	1673	// the beauty of JSON: you need exactly one character lookahead
1459	// to parse everything.	1674	// to parse everything.
1460	switch (*dec->cur)	1675	switch (*dec->cur)
1461	{	1676	{
1462	case '"': ++dec->cur; return decode_str (dec);	1677	case '"': ++dec->cur; return decode_str (dec);
1463	case '[': ++dec->cur; return decode_av (dec);	1678	case '[': ++dec->cur; return decode_av (dec);
1464	case '{': ++dec->cur; return decode_hv (dec);	1679	case '{': ++dec->cur; return decode_hv (dec);
		1680	case '(': return decode_tag (dec);
1465		1681
1466	case '-':	1682	case '-':
1467	case '0': case '1': case '2': case '3': case '4':	1683	case '0': case '1': case '2': case '3': case '4':
1468	case '5': case '6': case '7': case '8': case '9':	1684	case '5': case '6': case '7': case '8': case '9':
1469	return decode_num (dec);	1685	return decode_num (dec);
1470		1686
		1687	case 'f':
		1688	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
		1689	{
		1690	dec->cur += 5;
		1691
		1692	if (expect_false (!dec->json.v_false))
		1693	dec->json.v_false = GET_BOOL (false);
		1694
		1695	return newSVsv (dec->json.v_false);
		1696	}
		1697	else
		1698	ERR ("'false' expected");
		1699
		1700	break;
		1701
1471	case 't':	1702	case 't':
1472	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1703	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1473	{	1704	{
1474	dec->cur += 4;	1705	dec->cur += 4;
1475	#if JSON_SLOW	1706
1476	json_true = get_bool ("JSON::XS::true");	1707	if (expect_false (!dec->json.v_true))
1477	#endif	1708	dec->json.v_true = GET_BOOL (true);
		1709
1478	return newSVsv (json_true);	1710	return newSVsv (dec->json.v_true);
1479	}	1711	}
1480	else	1712	else
1481	ERR ("'true' expected");	1713	ERR ("'true' expected");
1482
1483	break;
1484
1485	case 'f':
1486	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1487	{
1488	dec->cur += 5;
1489	#if JSON_SLOW
1490	json_false = get_bool ("JSON::XS::false");
1491	#endif
1492	return newSVsv (json_false);
1493	}
1494	else
1495	ERR ("'false' expected");
1496		1714
1497	break;	1715	break;
1498		1716
1499	case 'n':	1717	case 'n':
1500	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	1718	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
…		…
1506	ERR ("'null' expected");	1724	ERR ("'null' expected");
1507		1725
1508	break;	1726	break;
1509		1727
1510	default:	1728	default:
1511	ERR ("malformed JSON string, neither array, object, number, string or atom");	1729	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1512	break;	1730	break;
1513	}	1731	}
1514		1732
1515	fail:	1733	fail:
1516	return 0;	1734	return 0;
1517	}	1735	}
1518		1736
1519	static SV *	1737	static SV *
1520	decode_json (SV string, JSON json, char **offset_return)	1738	decode_json (SV string, JSON json, STRLEN *offset_return)
1521	{	1739	{
1522	dec_t dec;	1740	dec_t dec;
1523	SV *sv;	1741	SV *sv;
1524		1742
1525	/* work around bugs in 5.10 where manipulating magic values	1743	/* work around bugs in 5.10 where manipulating magic values
1526	* will perl ignore the magic in subsequent accesses.	1744	* makes perl ignore the magic in subsequent accesses.
1527	* also make a copy of non-PV values, to get them into a clean	1745	* also make a copy of non-PV values, to get them into a clean
1528	* state (SvPV should do that, but it's buggy, see below).	1746	* state (SvPV should do that, but it's buggy, see below).
		1747	*
		1748	* SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
		1749	* as reported by Reini Urban.
1529	*/	1750	*/
1530	/SvGETMAGIC (string);/	1751	/SvGETMAGIC (string);/
1531	if (SvMAGICAL (string) \|\| !SvPOK (string))	1752	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
1532	string = sv_2mortal (newSVsv (string));	1753	string = sv_2mortal (newSVsv (string));
1533		1754
1534	SvUPGRADE (string, SVt_PV);	1755	SvUPGRADE (string, SVt_PV);
1535		1756
1536	/* work around a bug in perl 5.10, which causes SvCUR to fail an	1757	/* work around a bug in perl 5.10, which causes SvCUR to fail an
…		…
1575		1796
1576	decode_ws (&dec);	1797	decode_ws (&dec);
1577	sv = decode_sv (&dec);	1798	sv = decode_sv (&dec);
1578		1799
1579	if (offset_return)	1800	if (offset_return)
1580	*offset_return = dec.cur;	1801	*offset_return = dec.cur - SvPVX (string);
1581		1802	else if (sv)
1582	if (!(offset_return \|\| !sv))
1583	{	1803	{
1584	// check for trailing garbage	1804	// check for trailing garbage
1585	decode_ws (&dec);	1805	decode_ws (&dec);
1586		1806
1587	if (*dec.cur)	1807	if (dec.cur != dec.end)
1588	{	1808	{
1589	dec.err = "garbage after JSON object";	1809	dec.err = "garbage after JSON object";
1590	SvREFCNT_dec (sv);	1810	SvREFCNT_dec (sv);
1591	sv = 0;	1811	sv = 0;
1592	}	1812	}
…		…
1611	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1831	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1612	}	1832	}
1613		1833
1614	sv = sv_2mortal (sv);	1834	sv = sv_2mortal (sv);
1615		1835
1616	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1836	if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1617	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1837	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1618		1838
1619	return sv;	1839	return sv;
1620	}	1840	}
1621		1841
…		…
1630	// the state machine here is a bit convoluted and could be simplified a lot	1850	// the state machine here is a bit convoluted and could be simplified a lot
1631	// but this would make it slower, so...	1851	// but this would make it slower, so...
1632		1852
1633	for (;;)	1853	for (;;)
1634	{	1854	{
1635	//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
1636	switch (self->incr_mode)	1855	switch (self->incr_mode)
1637	{	1856	{
		1857	// reached end of a scalar, see if we are inside a nested structure or not
		1858	end_of_scalar:
		1859	self->incr_mode = INCR_M_JSON;
		1860
		1861	if (self->incr_nest) // end of a scalar inside array, object or tag
		1862	goto incr_m_json;
		1863	else // end of scalar outside structure, json text ends here
		1864	goto interrupt;
		1865
1638	// only used for initial whitespace skipping	1866	// only used for initial whitespace skipping
1639	case INCR_M_WS:	1867	case INCR_M_WS:
1640	for (;;)	1868	for (;;)
1641	{	1869	{
1642	if (*p > 0x20)	1870	if (*p > 0x20)
…		…
1684	++p;	1912	++p;
1685	}	1913	}
1686		1914
1687	break;	1915	break;
1688		1916
		1917	// inside true/false/null
		1918	case INCR_M_TFN:
		1919	incr_m_tfn:
		1920	for (;;)
		1921	switch (*p++)
		1922	{
		1923	case 'r': case 'u': case 'e': // tRUE, falsE, nUll
		1924	case 'a': case 'l': case 's': // fALSe, nuLL
		1925	// allowed
		1926	break;
		1927
		1928	default:
		1929	--p;
		1930	goto end_of_scalar;
		1931	}
		1932
		1933	// inside a number
		1934	case INCR_M_NUM:
		1935	incr_m_num:
		1936	for (;;)
		1937	switch (*p++)
		1938	{
		1939	case 'e': case 'E': case '.': case '+':
		1940	case '-':
		1941	case '0': case '1': case '2': case '3': case '4':
		1942	case '5': case '6': case '7': case '8': case '9':
		1943	// allowed
		1944	break;
		1945
		1946	default:
		1947	--p;
		1948	goto end_of_scalar;
		1949	}
		1950
1689	// inside a string	1951	// inside a string
1690	case INCR_M_STR:	1952	case INCR_M_STR:
1691	incr_m_str:	1953	incr_m_str:
1692	for (;;)	1954	for (;;)
1693	{	1955	{
1694	if (*p == '"')	1956	if (*p == '"')
1695	{	1957	{
1696	++p;	1958	++p;
1697	self->incr_mode = INCR_M_JSON;
1698
1699	if (!self->incr_nest)
1700	goto interrupt;
1701
1702	goto incr_m_json;	1959	goto end_of_scalar;
1703	}	1960	}
1704	else if (*p == '\\')	1961	else if (*p == '\\')
1705	{	1962	{
1706	++p; // "virtually" consumes character after \	1963	++p; // "virtually" consumes character after \
1707		1964
…		…
1737	--p; // do not eat the whitespace, let the next round do it	1994	--p; // do not eat the whitespace, let the next round do it
1738	goto interrupt;	1995	goto interrupt;
1739	}	1996	}
1740	break;	1997	break;
1741		1998
		1999	// the following three blocks handle scalars. this makes the parser
		2000	// more strict than required inside arrays or objects, and could
		2001	// be moved to a special case on the toplevel (except strings)
		2002	case 't':
		2003	case 'f':
		2004	case 'n':
		2005	self->incr_mode = INCR_M_TFN;
		2006	goto incr_m_tfn;
		2007
		2008	case '-':
		2009	case '0': case '1': case '2': case '3': case '4':
		2010	case '5': case '6': case '7': case '8': case '9':
		2011	self->incr_mode = INCR_M_NUM;
		2012	goto incr_m_num;
		2013
1742	case '"':	2014	case '"':
1743	self->incr_mode = INCR_M_STR;	2015	self->incr_mode = INCR_M_STR;
1744	goto incr_m_str;	2016	goto incr_m_str;
1745		2017
1746	case '[':	2018	case '[':
1747	case '{':	2019	case '{':
		2020	case '(':
1748	if (++self->incr_nest > self->max_depth)	2021	if (++self->incr_nest > self->max_depth)
1749	croak (ERR_NESTING_EXCEEDED);	2022	croak (ERR_NESTING_EXCEEDED);
1750	break;	2023	break;
1751		2024
1752	case ']':	2025	case ']':
1753	case '}':	2026	case '}':
1754	if (--self->incr_nest <= 0)	2027	if (--self->incr_nest <= 0)
1755	goto interrupt;	2028	goto interrupt;
		2029	break;
		2030
		2031	case ')':
		2032	--self->incr_nest;
1756	break;	2033	break;
1757		2034
1758	case '#':	2035	case '#':
1759	self->incr_mode = INCR_M_C1;	2036	self->incr_mode = INCR_M_C1;
1760	goto incr_m_c;	2037	goto incr_m_c;
…		…
1786	i >= '0' && i <= '9' ? i - '0'	2063	i >= '0' && i <= '9' ? i - '0'
1787	: i >= 'a' && i <= 'f' ? i - 'a' + 10	2064	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1788	: i >= 'A' && i <= 'F' ? i - 'A' + 10	2065	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1789	: -1;	2066	: -1;
1790		2067
1791	json_stash = gv_stashpv ("JSON::XS" , 1);	2068	json_stash = gv_stashpv ("JSON::XS" , 1);
1792	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	2069	bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1793
1794	json_true = get_bool ("JSON::XS::true");
1795	json_false = get_bool ("JSON::XS::false");	2070	bool_false = get_bool ("Types::Serialiser::false");
		2071	bool_true = get_bool ("Types::Serialiser::true");
		2072
		2073	sv_json = newSVpv ("JSON", 0);
		2074	SvREADONLY_on (sv_json);
1796		2075
1797	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */	2076	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1798	}	2077	}
1799		2078
1800	PROTOTYPES: DISABLE	2079	PROTOTYPES: DISABLE
1801		2080
1802	void CLONE (...)	2081	void CLONE (...)
1803	CODE:	2082	CODE:
		2083	// as long as these writes are atomic, the race should not matter
		2084	// as existing threads either already use 0, or use the old value,
		2085	// which is sitll correct for the initial thread.
1804	json_stash = 0;	2086	json_stash = 0;
1805	json_boolean_stash = 0;	2087	bool_stash = 0;
		2088	bool_false = 0;
		2089	bool_true = 0;
1806		2090
1807	void new (char *klass)	2091	void new (char *klass)
1808	PPCODE:	2092	PPCODE:
1809	{	2093	{
1810	SV *pv = NEWSV (0, sizeof (JSON));	2094	SV *pv = NEWSV (0, sizeof (JSON));
1811	SvPOK_only (pv);	2095	SvPOK_only (pv);
1812	json_init ((JSON *)SvPVX (pv));	2096	json_init ((JSON *)SvPVX (pv));
1813	XPUSHs (sv_2mortal (sv_bless (	2097	XPUSHs (sv_2mortal (sv_bless (
1814	newRV_noinc (pv),	2098	newRV_noinc (pv),
1815	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	2099	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1816	)));	2100	)));
1817	}	2101	}
		2102
		2103	void boolean_values (JSON self, SV v_false = 0, SV *v_true = 0)
		2104	PPCODE:
		2105	self->v_false = newSVsv (v_false);
		2106	self->v_true = newSVsv (v_true);
		2107	XPUSHs (ST (0));
		2108
		2109	void get_boolean_values (JSON *self)
		2110	PPCODE:
		2111	if (self->v_false && self->v_true)
		2112	{
		2113	EXTEND (SP, 2);
		2114	PUSHs (self->v_false);
		2115	PUSHs (self->v_true);
		2116	}
1818		2117
1819	void ascii (JSON *self, int enable = 1)	2118	void ascii (JSON *self, int enable = 1)
1820	ALIAS:	2119	ALIAS:
1821	ascii = F_ASCII	2120	ascii = F_ASCII
1822	latin1 = F_LATIN1	2121	latin1 = F_LATIN1
…		…
1830	shrink = F_SHRINK	2129	shrink = F_SHRINK
1831	allow_blessed = F_ALLOW_BLESSED	2130	allow_blessed = F_ALLOW_BLESSED
1832	convert_blessed = F_CONV_BLESSED	2131	convert_blessed = F_CONV_BLESSED
1833	relaxed = F_RELAXED	2132	relaxed = F_RELAXED
1834	allow_unknown = F_ALLOW_UNKNOWN	2133	allow_unknown = F_ALLOW_UNKNOWN
		2134	allow_tags = F_ALLOW_TAGS
1835	PPCODE:	2135	PPCODE:
1836	{	2136	{
1837	if (enable)	2137	if (enable)
1838	self->flags \|= ix;	2138	self->flags \|= ix;
1839	else	2139	else
…		…
1855	get_shrink = F_SHRINK	2155	get_shrink = F_SHRINK
1856	get_allow_blessed = F_ALLOW_BLESSED	2156	get_allow_blessed = F_ALLOW_BLESSED
1857	get_convert_blessed = F_CONV_BLESSED	2157	get_convert_blessed = F_CONV_BLESSED
1858	get_relaxed = F_RELAXED	2158	get_relaxed = F_RELAXED
1859	get_allow_unknown = F_ALLOW_UNKNOWN	2159	get_allow_unknown = F_ALLOW_UNKNOWN
		2160	get_allow_tags = F_ALLOW_TAGS
1860	PPCODE:	2161	PPCODE:
1861	XPUSHs (boolSV (self->flags & ix));	2162	XPUSHs (boolSV (self->flags & ix));
1862		2163
1863	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)	2164	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1864	PPCODE:	2165	PPCODE:
…		…
1892	}	2193	}
1893		2194
1894	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2195	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1895	PPCODE:	2196	PPCODE:
1896	{	2197	{
1897	if (!self->cb_sk_object)	2198	if (!self->cb_sk_object)
1898	self->cb_sk_object = newHV ();	2199	self->cb_sk_object = newHV ();
1899		2200
1900	if (SvOK (cb))	2201	if (SvOK (cb))
1901	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2202	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1902	else	2203	else
…		…
1913	XPUSHs (ST (0));	2214	XPUSHs (ST (0));
1914	}	2215	}
1915		2216
1916	void encode (JSON self, SV scalar)	2217	void encode (JSON self, SV scalar)
1917	PPCODE:	2218	PPCODE:
1918	XPUSHs (encode_json (scalar, self));	2219	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2220	XPUSHs (scalar);
1919		2221
1920	void decode (JSON self, SV jsonstr)	2222	void decode (JSON self, SV jsonstr)
1921	PPCODE:	2223	PPCODE:
1922	XPUSHs (decode_json (jsonstr, self, 0));	2224	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2225	XPUSHs (jsonstr);
1923		2226
1924	void decode_prefix (JSON self, SV jsonstr)	2227	void decode_prefix (JSON self, SV jsonstr)
1925	PPCODE:	2228	PPCODE:
1926	{	2229	{
1927	char *offset;	2230	SV *sv;
		2231	STRLEN offset;
		2232	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1928	EXTEND (SP, 2);	2233	EXTEND (SP, 2);
1929	PUSHs (decode_json (jsonstr, self, &offset));	2234	PUSHs (sv);
1930	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));	2235	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
1931	}	2236	}
1932		2237
1933	void incr_parse (JSON self, SV jsonstr = 0)	2238	void incr_parse (JSON self, SV jsonstr = 0)
1934	PPCODE:	2239	PPCODE:
1935	{	2240	{
…		…
1969	{	2274	{
1970	STRLEN len;	2275	STRLEN len;
1971	const char *str = SvPV (jsonstr, len);	2276	const char *str = SvPV (jsonstr, len);
1972	STRLEN cur = SvCUR (self->incr_text);	2277	STRLEN cur = SvCUR (self->incr_text);
1973		2278
1974	if (SvLEN (self->incr_text) <= cur + len)	2279	if (SvLEN (self->incr_text) - cur <= len)
1975	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	2280	json_sv_grow (self->incr_text, cur, len);
1976		2281
1977	Move (str, SvEND (self->incr_text), len, char);	2282	Move (str, SvEND (self->incr_text), len, char);
1978	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);	2283	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
1979	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there	2284	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1980	}	2285	}
1981	}	2286	}
1982		2287
1983	if (GIMME_V != G_VOID)	2288	if (GIMME_V != G_VOID)
1984	do	2289	do
1985	{	2290	{
		2291	SV *sv;
1986	char *offset;	2292	STRLEN offset;
1987		2293
1988	if (!INCR_DONE (self))	2294	if (!INCR_DONE (self))
1989	{	2295	{
1990	incr_parse (self);	2296	incr_parse (self);
1991		2297
…		…
2004		2310
2005	break;	2311	break;
2006	}	2312	}
2007	}	2313	}
2008		2314
2009	XPUSHs (decode_json (self->incr_text, self, &offset));	2315	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2316	XPUSHs (sv);
2010		2317
2011	self->incr_pos -= offset - SvPVX (self->incr_text);	2318	self->incr_pos -= offset;
2012	self->incr_nest = 0;	2319	self->incr_nest = 0;
2013	self->incr_mode = 0;	2320	self->incr_mode = 0;
2014		2321
2015	sv_chop (self->incr_text, offset);	2322	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
2016	}	2323	}
2017	while (GIMME_V == G_ARRAY);	2324	while (GIMME_V == G_ARRAY);
2018	}	2325	}
2019		2326
2020	SV incr_text (JSON self)	2327	SV incr_text (JSON self)
…		…
2051	self->incr_mode = 0;	2358	self->incr_mode = 0;
2052	}	2359	}
2053		2360
2054	void DESTROY (JSON *self)	2361	void DESTROY (JSON *self)
2055	CODE:	2362	CODE:
		2363	SvREFCNT_dec (self->v_false);
		2364	SvREFCNT_dec (self->v_true);
2056	SvREFCNT_dec (self->cb_sk_object);	2365	SvREFCNT_dec (self->cb_sk_object);
2057	SvREFCNT_dec (self->cb_object);	2366	SvREFCNT_dec (self->cb_object);
2058	SvREFCNT_dec (self->incr_text);	2367	SvREFCNT_dec (self->incr_text);
2059		2368
2060	PROTOTYPES: ENABLE	2369	PROTOTYPES: ENABLE
2061		2370
2062	void encode_json (SV *scalar)	2371	void encode_json (SV *scalar)
2063	ALIAS:
2064	to_json_ = 0
2065	encode_json = F_UTF8
2066	PPCODE:	2372	PPCODE:
2067	{	2373	{
2068	JSON json;	2374	JSON json;
2069	json_init (&json);	2375	json_init (&json);
2070	json.flags \|= ix;	2376	json.flags \|= F_UTF8;
2071	XPUSHs (encode_json (scalar, &json));	2377	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2378	XPUSHs (scalar);
2072	}	2379	}
2073		2380
2074	void decode_json (SV *jsonstr)	2381	void decode_json (SV *jsonstr)
2075	ALIAS:
2076	from_json_ = 0
2077	decode_json = F_UTF8
2078	PPCODE:	2382	PPCODE:
2079	{	2383	{
2080	JSON json;	2384	JSON json;
2081	json_init (&json);	2385	json_init (&json);
2082	json.flags \|= ix;	2386	json.flags \|= F_UTF8;
2083	XPUSHs (decode_json (jsonstr, &json, 0));	2387	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2388	XPUSHs (jsonstr);
2084	}	2389	}
2085		2390

Diff Legend

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+Removed lines
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+Added lines
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+Changed lines
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+Changed lines

Comparing JSON-XS/XS.xs (file contents): Revision 1.113 by root, Thu Aug 11 21:37:41 2011 UTC vs. Revision 1.141 by root, Tue Oct 27 18:05:58 2020 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.113 by root, Thu Aug 11 21:37:41 2011 UTC vs.
Revision 1.141 by root, Tue Oct 27 18:05:58 2020 UTC