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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.37 by root, Wed Jun 6 17:49:01 2007 UTC vs.
Revision 1.51 by root, Mon Jul 2 00:48:18 2007 UTC

…		…
9		9
10	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	10	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
11	# define snprintf _snprintf // C compilers have this in stdio.h	11	# define snprintf _snprintf // C compilers have this in stdio.h
12	#endif	12	#endif
13		13
		14	// some old perls do not have this, try to make it work, no
		15	// guarentees, though. if it breaks, you get to keep the pieces.
		16	#ifndef UTF8_MAXBYTES
		17	# define UTF8_MAXBYTES 13
		18	#endif
		19
14	#define F_ASCII 0x00000001UL	20	#define F_ASCII 0x00000001UL
15	#define F_LATIN1 0x00000002UL	21	#define F_LATIN1 0x00000002UL
16	#define F_UTF8 0x00000004UL	22	#define F_UTF8 0x00000004UL
17	#define F_INDENT 0x00000008UL	23	#define F_INDENT 0x00000008UL
18	#define F_CANONICAL 0x00000010UL	24	#define F_CANONICAL 0x00000010UL
19	#define F_SPACE_BEFORE 0x00000020UL	25	#define F_SPACE_BEFORE 0x00000020UL
20	#define F_SPACE_AFTER 0x00000040UL	26	#define F_SPACE_AFTER 0x00000040UL
21	#define F_ALLOW_NONREF 0x00000100UL	27	#define F_ALLOW_NONREF 0x00000100UL
22	#define F_SHRINK 0x00000200UL	28	#define F_SHRINK 0x00000200UL
		29	#define F_ALLOW_BLESSED 0x00000400UL
		30	#define F_CONV_BLESSED 0x00000800UL
23	#define F_MAXDEPTH 0xf8000000UL	31	#define F_MAXDEPTH 0xf8000000UL
24	#define S_MAXDEPTH 27	32	#define S_MAXDEPTH 27
		33	#define F_MAXSIZE 0x01f00000UL
		34	#define S_MAXSIZE 20
		35	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
25		36
26	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))	37	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
27		38	#define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE ))
28	// F_SELFCONVERT? <=> to_json/toJson
29	// F_BLESSED? <=> { $__class__$ => }
30		39
31	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	40	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
32	#define F_DEFAULT (9UL << S_MAXDEPTH)	41	#define F_DEFAULT (9UL << S_MAXDEPTH)
33		42
34	#define INIT_SIZE 32 // initial scalar size to be allocated	43	#define INIT_SIZE 32 // initial scalar size to be allocated
35	#define INDENT_STEP 3 // spaces per indentation level	44	#define INDENT_STEP 3 // spaces per indentation level
36		45
37	#define SHORT_STRING_LEN 512 // special-case strings of up to this size	46	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
38		47
39	#define SB do {	48	#define SB do {
40	#define SE } while (0)	49	#define SE } while (0)
41		50
42	#if __GNUC__ >= 3	51	#if __GNUC__ >= 3
…		…
48	#endif	57	#endif
49		58
50	#define expect_false(expr) expect ((expr) != 0, 0)	59	#define expect_false(expr) expect ((expr) != 0, 0)
51	#define expect_true(expr) expect ((expr) != 0, 1)	60	#define expect_true(expr) expect ((expr) != 0, 1)
52		61
53	static HV *json_stash; // JSON::XS::	62	static HV json_stash, json_boolean_stash; // JSON::XS::
		63	static SV json_true, json_false;
		64
		65	typedef struct {
		66	U32 flags;
		67	SV cb_object, cb_sk_object;
		68	} JSON;
54		69
55	/////////////////////////////////////////////////////////////////////////////	70	/////////////////////////////////////////////////////////////////////////////
56	// utility functions	71	// utility functions
57		72
58	static UV *	73	inline void
59	SvJSON (SV *sv)
60	{
61	if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash))
62	croak ("object is not of type JSON::XS");
63
64	return &SvUVX (SvRV (sv));
65	}
66
67	static void
68	shrink (SV *sv)	74	shrink (SV *sv)
69	{	75	{
70	sv_utf8_downgrade (sv, 1);	76	sv_utf8_downgrade (sv, 1);
71	if (SvLEN (sv) > SvCUR (sv) + 1)	77	if (SvLEN (sv) > SvCUR (sv) + 1)
72	{	78	{
…		…
107	typedef struct	113	typedef struct
108	{	114	{
109	char *cur; // SvPVX (sv) + current output position	115	char *cur; // SvPVX (sv) + current output position
110	char *end; // SvEND (sv)	116	char *end; // SvEND (sv)
111	SV *sv; // result scalar	117	SV *sv; // result scalar
112	U32 flags; // F_*	118	JSON json;
113	U32 indent; // indentation level	119	U32 indent; // indentation level
114	U32 maxdepth; // max. indentation/recursion level	120	U32 maxdepth; // max. indentation/recursion level
115	} enc_t;	121	} enc_t;
116		122
117	inline void	123	inline void
…		…
178	STRLEN clen;	184	STRLEN clen;
179	UV uch;	185	UV uch;
180		186
181	if (is_utf8)	187	if (is_utf8)
182	{	188	{
183	//uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
184	uch = decode_utf8 (str, end - str, &clen);	189	uch = decode_utf8 (str, end - str, &clen);
185	if (clen == (STRLEN)-1)	190	if (clen == (STRLEN)-1)
186	croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);	191	croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);
187	}	192	}
188	else	193	else
…		…
192	}	197	}
193		198
194	if (uch > 0x10FFFFUL)	199	if (uch > 0x10FFFFUL)
195	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);	200	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
196		201
197	if (uch < 0x80 \|\| enc->flags & F_ASCII \|\| (enc->flags & F_LATIN1 && uch > 0xFF))	202	if (uch < 0x80 \|\| enc->json.flags & F_ASCII \|\| (enc->json.flags & F_LATIN1 && uch > 0xFF))
198	{	203	{
199	if (uch > 0xFFFFUL)	204	if (uch > 0xFFFFUL)
200	{	205	{
201	need (enc, len += 11);	206	need (enc, len += 11);
202	sprintf (enc->cur, "\\u%04x\\u%04x",	207	sprintf (enc->cur, "\\u%04x\\u%04x",
…		…
216	*enc->cur++ = hexdigit [(uch >> 0) & 15];	221	*enc->cur++ = hexdigit [(uch >> 0) & 15];
217	}	222	}
218		223
219	str += clen;	224	str += clen;
220	}	225	}
221	else if (enc->flags & F_LATIN1)	226	else if (enc->json.flags & F_LATIN1)
222	{	227	{
223	*enc->cur++ = uch;	228	*enc->cur++ = uch;
224	str += clen;	229	str += clen;
225	}	230	}
226	else if (is_utf8)	231	else if (is_utf8)
…		…
247	}	252	}
248		253
249	inline void	254	inline void
250	encode_indent (enc_t *enc)	255	encode_indent (enc_t *enc)
251	{	256	{
252	if (enc->flags & F_INDENT)	257	if (enc->json.flags & F_INDENT)
253	{	258	{
254	int spaces = enc->indent * INDENT_STEP;	259	int spaces = enc->indent * INDENT_STEP;
255		260
256	need (enc, spaces);	261	need (enc, spaces);
257	memset (enc->cur, ' ', spaces);	262	memset (enc->cur, ' ', spaces);
…		…
267	}	272	}
268		273
269	inline void	274	inline void
270	encode_nl (enc_t *enc)	275	encode_nl (enc_t *enc)
271	{	276	{
272	if (enc->flags & F_INDENT)	277	if (enc->json.flags & F_INDENT)
273	{	278	{
274	need (enc, 1);	279	need (enc, 1);
275	encode_ch (enc, '\n');	280	encode_ch (enc, '\n');
276	}	281	}
277	}	282	}
…		…
279	inline void	284	inline void
280	encode_comma (enc_t *enc)	285	encode_comma (enc_t *enc)
281	{	286	{
282	encode_ch (enc, ',');	287	encode_ch (enc, ',');
283		288
284	if (enc->flags & F_INDENT)	289	if (enc->json.flags & F_INDENT)
285	encode_nl (enc);	290	encode_nl (enc);
286	else if (enc->flags & F_SPACE_AFTER)	291	else if (enc->json.flags & F_SPACE_AFTER)
287	encode_space (enc);	292	encode_space (enc);
288	}	293	}
289		294
290	static void encode_sv (enc_t enc, SV sv);	295	static void encode_sv (enc_t enc, SV sv);
291		296
…		…
334	else	339	else
335	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	340	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
336		341
337	encode_ch (enc, '"');	342	encode_ch (enc, '"');
338		343
339	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);	344	if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc);
340	encode_ch (enc, ':');	345	encode_ch (enc, ':');
341	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);	346	if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc);
342	encode_sv (enc, HeVAL (he));	347	encode_sv (enc, HeVAL (he));
343	}	348	}
344		349
345	// compare hash entries, used when all keys are bytestrings	350	// compare hash entries, used when all keys are bytestrings
346	static int	351	static int
…		…
381	{	386	{
382	// for canonical output we have to sort by keys first	387	// for canonical output we have to sort by keys first
383	// actually, this is mostly due to the stupid so-called	388	// actually, this is mostly due to the stupid so-called
384	// security workaround added somewhere in 5.8.x.	389	// security workaround added somewhere in 5.8.x.
385	// that randomises hash orderings	390	// that randomises hash orderings
386	if (enc->flags & F_CANONICAL)	391	if (enc->json.flags & F_CANONICAL)
387	{	392	{
388	int fast = 1;	393	int fast = 1;
389	HE *he;	394	HE *he;
390	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	395	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
391	HE *hes = _alloca (count sizeof (HE));	396	HE *hes = _alloca (count sizeof (HE));
…		…
463	svtype svt;	468	svtype svt;
464		469
465	SvGETMAGIC (sv);	470	SvGETMAGIC (sv);
466	svt = SvTYPE (sv);	471	svt = SvTYPE (sv);
467		472
		473	if (expect_false (SvOBJECT (sv)))
		474	{
		475	if (SvSTASH (sv) == json_boolean_stash)
		476	{
		477	if (SvIV (sv))
		478	encode_str (enc, "true", 4, 0);
		479	else
		480	encode_str (enc, "false", 5, 0);
		481	}
		482	else
		483	{
		484	#if 0
		485	if (0 && sv_derived_from (rv, "JSON::Literal"))
		486	{
		487	// not yet
		488	}
		489	#endif
		490	if (enc->json.flags & F_CONV_BLESSED)
		491	{
		492	// we re-bless the reference to get overload and other niceties right
		493	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 1);
		494
		495	if (to_json)
		496	{
		497	dSP; ENTER; SAVETMPS; PUSHMARK (SP);
		498	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
		499
		500	// calling with G_SCALAR ensures that we always get a 1 reutrn value
		501	// check anyways.
		502	PUTBACK;
		503	assert (1 == call_sv ((SV *)GvCV (to_json), G_SCALAR));
		504	SPAGAIN;
		505
		506	encode_sv (enc, POPs);
		507
		508	FREETMPS; LEAVE;
		509	}
		510	else if (enc->json.flags & F_ALLOW_BLESSED)
		511	encode_str (enc, "null", 4, 0);
		512	else
		513	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
		514	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		515	}
		516	else if (enc->json.flags & F_ALLOW_BLESSED)
		517	encode_str (enc, "null", 4, 0);
		518	else
		519	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",
		520	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		521	}
		522	}
468	if (svt == SVt_PVHV)	523	else if (svt == SVt_PVHV)
469	encode_hv (enc, (HV *)sv);	524	encode_hv (enc, (HV *)sv);
470	else if (svt == SVt_PVAV)	525	else if (svt == SVt_PVAV)
471	encode_av (enc, (AV *)sv);	526	encode_av (enc, (AV *)sv);
472	else if (svt < SVt_PVAV)	527	else if (svt < SVt_PVAV)
473	{	528	{
474	if (SvNIOK (sv) && SvIV (sv) == 0)	529	STRLEN len = 0;
		530	char *pv = svt ? SvPV (sv, len) : 0;
		531
		532	if (len == 1 && *pv == '1')
		533	encode_str (enc, "true", 4, 0);
		534	else if (len == 1 && *pv == '0')
475	encode_str (enc, "false", 5, 0);	535	encode_str (enc, "false", 5, 0);
476	else if (SvNIOK (sv) && SvIV (sv) == 1)
477	encode_str (enc, "true", 4, 0);
478	else	536	else
479	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	537	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
480	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	538	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
481	}	539	}
482	else	540	else
…		…
497	encode_str (enc, str, len, SvUTF8 (sv));	555	encode_str (enc, str, len, SvUTF8 (sv));
498	encode_ch (enc, '"');	556	encode_ch (enc, '"');
499	}	557	}
500	else if (SvNOKp (sv))	558	else if (SvNOKp (sv))
501	{	559	{
		560	// trust that perl will do the right thing w.r.t. JSON syntax.
502	need (enc, NV_DIG + 32);	561	need (enc, NV_DIG + 32);
503	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);	562	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);
504	enc->cur += strlen (enc->cur);	563	enc->cur += strlen (enc->cur);
505	}	564	}
506	else if (SvIOKp (sv))	565	else if (SvIOKp (sv))
507	{	566	{
508	// we assume we can always read an IV as a UV	567	// we assume we can always read an IV as a UV
509	if (SvUV (sv) & ~(UV)0x7fff)	568	if (SvUV (sv) & ~(UV)0x7fff)
510	{	569	{
		570	// large integer, use the (rather slow) snprintf way.
511	need (enc, sizeof (UV) * 3);	571	need (enc, sizeof (UV) * 3);
512	enc->cur +=	572	enc->cur +=
513	SvIsUV(sv)	573	SvIsUV(sv)
514	? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv))	574	? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv))
515	: snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv));	575	: snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv));
…		…
518	{	578	{
519	// optimise the "small number case"	579	// optimise the "small number case"
520	// code will likely be branchless and use only a single multiplication	580	// code will likely be branchless and use only a single multiplication
521	I32 i = SvIV (sv);	581	I32 i = SvIV (sv);
522	U32 u;	582	U32 u;
		583	char digit, nz = 0;
523		584
524	need (enc, 6);	585	need (enc, 6);
525		586
526	*enc->cur = '-'; enc->cur += i < 0 ? 1 : 0;	587	*enc->cur = '-'; enc->cur += i < 0 ? 1 : 0;
527	u = i < 0 ? -i : i;	588	u = i < 0 ? -i : i;
528		589
529	// convert to 4.28 fixed-point representation	590	// convert to 4.28 fixed-point representation
530	u = u * ((0xfffffff + 10000) / 10000); // 10**5, 5 fractional digits	591	u = u * ((0xfffffff + 10000) / 10000); // 10**5, 5 fractional digits
531		592
532	char digit, nz = 0;	593	// now output digit by digit, each time masking out the integer part
533		594	// and multiplying by 5 while moving the decimal point one to the right,
		595	// resulting in a net multiplication by 10.
		596	// we always write the digit to memory but conditionally increment
		597	// the pointer, to ease the usage of conditional move instructions.
534	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffff) 5;	598	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffff) 5;
535	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffff) 5;	599	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffff) 5;
536	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffff) 5;	600	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffff) 5;
537	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffff) 5;	601	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffff) 5;
538	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1;	602	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'
539	}	603	}
540	}	604	}
541	else if (SvROK (sv))	605	else if (SvROK (sv))
542	encode_rv (enc, SvRV (sv));	606	encode_rv (enc, SvRV (sv));
543	else if (!SvOK (sv))	607	else if (!SvOK (sv))
…		…
546	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	610	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
547	SvPV_nolen (sv), SvFLAGS (sv));	611	SvPV_nolen (sv), SvFLAGS (sv));
548	}	612	}
549		613
550	static SV *	614	static SV *
551	encode_json (SV *scalar, U32 flags)	615	encode_json (SV scalar, JSON json)
552	{	616	{
553	enc_t enc;	617	enc_t enc;
554		618
555	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))	619	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))
556	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	620	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
557		621
558	enc.flags = flags;	622	enc.json = *json;
559	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	623	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
560	enc.cur = SvPVX (enc.sv);	624	enc.cur = SvPVX (enc.sv);
561	enc.end = SvEND (enc.sv);	625	enc.end = SvEND (enc.sv);
562	enc.indent = 0;	626	enc.indent = 0;
563	enc.maxdepth = DEC_DEPTH (flags);	627	enc.maxdepth = DEC_DEPTH (enc.json.flags);
564		628
565	SvPOK_only (enc.sv);	629	SvPOK_only (enc.sv);
566	encode_sv (&enc, scalar);	630	encode_sv (&enc, scalar);
567		631
568	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	632	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
569	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	633	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
570		634
571	if (!(flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	635	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
572	SvUTF8_on (enc.sv);	636	SvUTF8_on (enc.sv);
573		637
574	if (enc.flags & F_SHRINK)	638	if (enc.json.flags & F_SHRINK)
575	shrink (enc.sv);	639	shrink (enc.sv);
576		640
577	return enc.sv;	641	return enc.sv;
578	}	642	}
579		643
…		…
584	typedef struct	648	typedef struct
585	{	649	{
586	char *cur; // current parser pointer	650	char *cur; // current parser pointer
587	char *end; // end of input string	651	char *end; // end of input string
588	const char *err; // parse error, if != 0	652	const char *err; // parse error, if != 0
589	U32 flags; // F_*	653	JSON json;
590	U32 depth; // recursion depth	654	U32 depth; // recursion depth
591	U32 maxdepth; // recursion depth limit	655	U32 maxdepth; // recursion depth limit
592	} dec_t;	656	} dec_t;
593		657
594	inline void	658	inline void
…		…
625	decode_4hex (dec_t *dec)	689	decode_4hex (dec_t *dec)
626	{	690	{
627	signed char d1, d2, d3, d4;	691	signed char d1, d2, d3, d4;
628	unsigned char cur = (unsigned char )dec->cur;	692	unsigned char cur = (unsigned char )dec->cur;
629		693
630	d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("four hexadecimal digits expected");	694	d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("exactly four hexadecimal digits expected");
631	d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("four hexadecimal digits expected");	695	d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("exactly four hexadecimal digits expected");
632	d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("four hexadecimal digits expected");	696	d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("exactly four hexadecimal digits expected");
633	d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("four hexadecimal digits expected");	697	d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("exactly four hexadecimal digits expected");
634		698
635	dec->cur += 4;	699	dec->cur += 4;
636		700
637	return ((UV)d1) << 12	701	return ((UV)d1) << 12
638	\| ((UV)d2) << 8	702	\| ((UV)d2) << 8
…		…
646	static SV *	710	static SV *
647	decode_str (dec_t *dec)	711	decode_str (dec_t *dec)
648	{	712	{
649	SV *sv = 0;	713	SV *sv = 0;
650	int utf8 = 0;	714	int utf8 = 0;
		715	char *dec_cur = dec->cur;
651		716
652	do	717	do
653	{	718	{
654	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];	719	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];
655	char *cur = buf;	720	char *cur = buf;
656		721
657	do	722	do
658	{	723	{
659	unsigned char ch = (unsigned char )dec->cur++;	724	unsigned char ch = (unsigned char )dec_cur++;
660		725
661	if (expect_false (ch == '"'))	726	if (expect_false (ch == '"'))
662	{	727	{
663	--dec->cur;	728	--dec_cur;
664	break;	729	break;
665	}	730	}
666	else if (expect_false (ch == '\\'))	731	else if (expect_false (ch == '\\'))
667	{	732	{
668	switch (*dec->cur)	733	switch (*dec_cur)
669	{	734	{
670	case '\\':	735	case '\\':
671	case '/':	736	case '/':
672	case '"': cur++ = dec->cur++; break;	737	case '"': cur++ = dec_cur++; break;
673		738
674	case 'b': ++dec->cur; *cur++ = '\010'; break;	739	case 'b': ++dec_cur; *cur++ = '\010'; break;
675	case 't': ++dec->cur; *cur++ = '\011'; break;	740	case 't': ++dec_cur; *cur++ = '\011'; break;
676	case 'n': ++dec->cur; *cur++ = '\012'; break;	741	case 'n': ++dec_cur; *cur++ = '\012'; break;
677	case 'f': ++dec->cur; *cur++ = '\014'; break;	742	case 'f': ++dec_cur; *cur++ = '\014'; break;
678	case 'r': ++dec->cur; *cur++ = '\015'; break;	743	case 'r': ++dec_cur; *cur++ = '\015'; break;
679		744
680	case 'u':	745	case 'u':
681	{	746	{
682	UV lo, hi;	747	UV lo, hi;
683	++dec->cur;	748	++dec_cur;
684		749
		750	dec->cur = dec_cur;
685	hi = decode_4hex (dec);	751	hi = decode_4hex (dec);
		752	dec_cur = dec->cur;
686	if (hi == (UV)-1)	753	if (hi == (UV)-1)
687	goto fail;	754	goto fail;
688		755
689	// possibly a surrogate pair	756	// possibly a surrogate pair
690	if (hi >= 0xd800)	757	if (hi >= 0xd800)
691	if (hi < 0xdc00)	758	if (hi < 0xdc00)
692	{	759	{
693	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')	760	if (dec_cur [0] != '\\' \|\| dec_cur [1] != 'u')
694	ERR ("missing low surrogate character in surrogate pair");	761	ERR ("missing low surrogate character in surrogate pair");
695		762
696	dec->cur += 2;	763	dec_cur += 2;
697		764
		765	dec->cur = dec_cur;
698	lo = decode_4hex (dec);	766	lo = decode_4hex (dec);
		767	dec_cur = dec->cur;
699	if (lo == (UV)-1)	768	if (lo == (UV)-1)
700	goto fail;	769	goto fail;
701		770
702	if (lo < 0xdc00 \|\| lo >= 0xe000)	771	if (lo < 0xdc00 \|\| lo >= 0xe000)
703	ERR ("surrogate pair expected");	772	ERR ("surrogate pair expected");
…		…
717	*cur++ = hi;	786	*cur++ = hi;
718	}	787	}
719	break;	788	break;
720		789
721	default:	790	default:
722	--dec->cur;	791	--dec_cur;
723	ERR ("illegal backslash escape sequence in string");	792	ERR ("illegal backslash escape sequence in string");
724	}	793	}
725	}	794	}
726	else if (expect_true (ch >= 0x20 && ch <= 0x7f))	795	else if (expect_true (ch >= 0x20 && ch <= 0x7f))
727	*cur++ = ch;	796	*cur++ = ch;
728	else if (ch >= 0x80)	797	else if (ch >= 0x80)
729	{	798	{
730	STRLEN clen;	799	STRLEN clen;
731	UV uch;	800	UV uch;
732		801
733	--dec->cur;	802	--dec_cur;
734		803
735	uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen);	804	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
736	if (clen == (STRLEN)-1)	805	if (clen == (STRLEN)-1)
737	ERR ("malformed UTF-8 character in JSON string");	806	ERR ("malformed UTF-8 character in JSON string");
738		807
739	do	808	do
740	cur++ = dec->cur++;	809	cur++ = dec_cur++;
741	while (--clen);	810	while (--clen);
742		811
743	utf8 = 1;	812	utf8 = 1;
744	}	813	}
745	else	814	else
746	{	815	{
747	--dec->cur;	816	--dec_cur;
748		817
749	if (!ch)	818	if (!ch)
750	ERR ("unexpected end of string while parsing JSON string");	819	ERR ("unexpected end of string while parsing JSON string");
751	else	820	else
752	ERR ("invalid character encountered while parsing JSON string");	821	ERR ("invalid character encountered while parsing JSON string");
…		…
765	}	834	}
766	else	835	else
767	sv = newSVpvn (buf, len);	836	sv = newSVpvn (buf, len);
768	}	837	}
769	}	838	}
770	while (*dec->cur != '"');	839	while (*dec_cur != '"');
771		840
772	++dec->cur;	841	++dec_cur;
773		842
774	if (sv)	843	if (sv)
775	{	844	{
776	SvPOK_only (sv);	845	SvPOK_only (sv);
777	*SvEND (sv) = 0;	846	*SvEND (sv) = 0;
…		…
780	SvUTF8_on (sv);	849	SvUTF8_on (sv);
781	}	850	}
782	else	851	else
783	sv = newSVpvn ("", 0);	852	sv = newSVpvn ("", 0);
784		853
		854	dec->cur = dec_cur;
785	return sv;	855	return sv;
786		856
787	fail:	857	fail:
		858	dec->cur = dec_cur;
788	return 0;	859	return 0;
789	}	860	}
790		861
791	static SV *	862	static SV *
792	decode_num (dec_t *dec)	863	decode_num (dec_t *dec)
…		…
854	{	925	{
855	// special case the rather common 1..4-digit-int case, assumes 32 bit ints or so	926	// special case the rather common 1..4-digit-int case, assumes 32 bit ints or so
856	if (*start == '-')	927	if (*start == '-')
857	switch (dec->cur - start)	928	switch (dec->cur - start)
858	{	929	{
859	case 2: return newSViv (-( start [1] - '0' ));	930	case 2: return newSViv (-( start [1] - '0' * 1));
860	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	931	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));
861	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));	932	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
862	case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));	933	case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
863	}	934	}
864	else	935	else
865	switch (dec->cur - start)	936	switch (dec->cur - start)
866	{	937	{
867	case 1: return newSViv ( start [0] - '0' );	938	case 1: return newSViv ( start [0] - '0' * 1);
868	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	939	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
869	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);	940	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
870	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);	941	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
871	}	942	}
872		943
…		…
879	if (uv < (UV)IV_MIN)	950	if (uv < (UV)IV_MIN)
880	return newSViv (-(IV)uv);	951	return newSViv (-(IV)uv);
881	}	952	}
882	else	953	else
883	return newSVuv (uv);	954	return newSVuv (uv);
		955
		956	// here would likely be the place for bigint support
884	}	957	}
885	}	958	}
886		959
		960	// if we ever support bigint or bigfloat, this is the place for bigfloat
887	return newSVnv (Atof (start));	961	return newSVnv (Atof (start));
888		962
889	fail:	963	fail:
890	return 0;	964	return 0;
891	}	965	}
…		…
935	}	1009	}
936		1010
937	static SV *	1011	static SV *
938	decode_hv (dec_t *dec)	1012	decode_hv (dec_t *dec)
939	{	1013	{
		1014	SV *sv;
940	HV *hv = newHV ();	1015	HV *hv = newHV ();
941		1016
942	DEC_INC_DEPTH;	1017	DEC_INC_DEPTH;
943	decode_ws (dec);	1018	decode_ws (dec);
944		1019
945	if (*dec->cur == '}')	1020	if (*dec->cur == '}')
946	++dec->cur;	1021	++dec->cur;
947	else	1022	else
948	for (;;)	1023	for (;;)
949	{	1024	{
950	SV key, value;
951
952	decode_ws (dec); EXPECT_CH ('"');	1025	decode_ws (dec); EXPECT_CH ('"');
953		1026
954	key = decode_str (dec);	1027	// heuristic: assume that
955	if (!key)	1028	// a) decode_str + hv_store_ent are abysmally slow.
956	goto fail;	1029	// b) most hash keys are short, simple ascii text.
		1030	// => try to "fast-match" such strings to avoid
		1031	// the overhead of decode_str + hv_store_ent.
		1032	{
		1033	SV *value;
		1034	char *p = dec->cur;
		1035	char *e = p + 24; // only try up to 24 bytes
957		1036
958	decode_ws (dec); EXPECT_CH (':');	1037	for (;;)
959
960	value = decode_sv (dec);
961	if (!value)
962	{	1038	{
		1039	// the >= 0x80 is true on most architectures
		1040	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')
		1041	{
		1042	// slow path, back up and use decode_str
		1043	SV *key = decode_str (dec);
		1044	if (!key)
		1045	goto fail;
		1046
		1047	decode_ws (dec); EXPECT_CH (':');
		1048
		1049	value = decode_sv (dec);
		1050	if (!value)
		1051	{
		1052	SvREFCNT_dec (key);
		1053	goto fail;
		1054	}
		1055
		1056	hv_store_ent (hv, key, value, 0);
963	SvREFCNT_dec (key);	1057	SvREFCNT_dec (key);
		1058
		1059	break;
		1060	}
		1061	else if (*p == '"')
		1062	{
		1063	// fast path, got a simple key
		1064	char *key = dec->cur;
		1065	int len = p - key;
		1066	dec->cur = p + 1;
		1067
		1068	decode_ws (dec); EXPECT_CH (':');
		1069
		1070	value = decode_sv (dec);
		1071	if (!value)
964	goto fail;	1072	goto fail;
		1073
		1074	hv_store (hv, key, len, value, 0);
		1075
		1076	break;
		1077	}
		1078
		1079	++p;
965	}	1080	}
966		1081	}
967	hv_store_ent (hv, key, value, 0);
968	SvREFCNT_dec (key);
969		1082
970	decode_ws (dec);	1083	decode_ws (dec);
971		1084
972	if (*dec->cur == '}')	1085	if (*dec->cur == '}')
973	{	1086	{
…		…
980		1093
981	++dec->cur;	1094	++dec->cur;
982	}	1095	}
983		1096
984	DEC_DEC_DEPTH;	1097	DEC_DEC_DEPTH;
985	return newRV_noinc ((SV *)hv);	1098	sv = newRV_noinc ((SV *)hv);
		1099
		1100	// check filter callbacks
		1101	if (dec->json.flags & F_HOOK)
		1102	{
		1103	ENTER; SAVETMPS;
		1104
		1105	if (dec->json.cb_sk_object && HvKEYS (hv) == 1)
		1106	{
		1107	int count;
		1108
		1109	dSP; PUSHMARK (SP);
		1110	XPUSHs (sv_2mortal (sv));
		1111
		1112	PUTBACK; count = call_sv (dec->json.cb_sk_object, G_ARRAY); SPAGAIN;
		1113
		1114	if (count == 1)
		1115	{
		1116	sv = newSVsv (POPs);
		1117	goto filter_ok;
		1118	}
		1119
		1120	SvREFCNT_inc (sv);
		1121	}
		1122
		1123	if (dec->json.cb_object)
		1124	{
		1125	int count;
		1126
		1127	dSP; ENTER; SAVETMPS; PUSHMARK (SP);
		1128	XPUSHs (sv_2mortal (sv));
		1129
		1130	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
		1131
		1132	if (count == 1)
		1133	{
		1134	sv = newSVsv (POPs);
		1135	goto filter_ok;
		1136	}
		1137
		1138	SvREFCNT_inc (sv);
		1139	}
		1140
		1141	filter_ok:
		1142	FREETMPS; LEAVE;
		1143	}
		1144
		1145	return sv;
986		1146
987	fail:	1147	fail:
988	SvREFCNT_dec (hv);	1148	SvREFCNT_dec (hv);
989	DEC_DEC_DEPTH;	1149	DEC_DEC_DEPTH;
990	return 0;	1150	return 0;
…		…
992		1152
993	static SV *	1153	static SV *
994	decode_sv (dec_t *dec)	1154	decode_sv (dec_t *dec)
995	{	1155	{
996	decode_ws (dec);	1156	decode_ws (dec);
		1157
		1158	// the beauty of JSON: you need exactly one character lookahead
		1159	// to parse anything.
997	switch (*dec->cur)	1160	switch (*dec->cur)
998	{	1161	{
999	case '"': ++dec->cur; return decode_str (dec);	1162	case '"': ++dec->cur; return decode_str (dec);
1000	case '[': ++dec->cur; return decode_av (dec);	1163	case '[': ++dec->cur; return decode_av (dec);
1001	case '{': ++dec->cur; return decode_hv (dec);	1164	case '{': ++dec->cur; return decode_hv (dec);
…		…
1007		1170
1008	case 't':	1171	case 't':
1009	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1172	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1010	{	1173	{
1011	dec->cur += 4;	1174	dec->cur += 4;
1012	return newSViv (1);	1175	return SvREFCNT_inc (json_true);
1013	}	1176	}
1014	else	1177	else
1015	ERR ("'true' expected");	1178	ERR ("'true' expected");
1016		1179
1017	break;	1180	break;
1018		1181
1019	case 'f':	1182	case 'f':
1020	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1183	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1021	{	1184	{
1022	dec->cur += 5;	1185	dec->cur += 5;
1023	return newSViv (0);	1186	return SvREFCNT_inc (json_false);
1024	}	1187	}
1025	else	1188	else
1026	ERR ("'false' expected");	1189	ERR ("'false' expected");
1027		1190
1028	break;	1191	break;
…		…
1046	fail:	1209	fail:
1047	return 0;	1210	return 0;
1048	}	1211	}
1049		1212
1050	static SV *	1213	static SV *
1051	decode_json (SV string, U32 flags, UV offset_return)	1214	decode_json (SV string, JSON json, UV *offset_return)
1052	{	1215	{
1053	dec_t dec;	1216	dec_t dec;
1054	UV offset;	1217	UV offset;
1055	SV *sv;	1218	SV *sv;
1056		1219
1057	SvGETMAGIC (string);	1220	SvGETMAGIC (string);
1058	SvUPGRADE (string, SVt_PV);	1221	SvUPGRADE (string, SVt_PV);
1059		1222
		1223	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))
		1224	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		1225	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));
		1226
1060	if (flags & F_UTF8)	1227	if (json->flags & F_UTF8)
1061	sv_utf8_downgrade (string, 0);	1228	sv_utf8_downgrade (string, 0);
1062	else	1229	else
1063	sv_utf8_upgrade (string);	1230	sv_utf8_upgrade (string);
1064		1231
1065	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1232	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1066		1233
1067	dec.flags = flags;	1234	dec.json = *json;
1068	dec.cur = SvPVX (string);	1235	dec.cur = SvPVX (string);
1069	dec.end = SvEND (string);	1236	dec.end = SvEND (string);
1070	dec.err = 0;	1237	dec.err = 0;
1071	dec.depth = 0;	1238	dec.depth = 0;
1072	dec.maxdepth = DEC_DEPTH (dec.flags);	1239	dec.maxdepth = DEC_DEPTH (dec.json.flags);
		1240
		1241	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
		1242	dec.json.flags \|= F_HOOK;
1073		1243
1074	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1244	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
1075	sv = decode_sv (&dec);	1245	sv = decode_sv (&dec);
1076		1246
1077	if (!(offset_return \|\| !sv))	1247	if (!(offset_return \|\| !sv))
…		…
1087	}	1257	}
1088	}	1258	}
1089		1259
1090	if (offset_return \|\| !sv)	1260	if (offset_return \|\| !sv)
1091	{	1261	{
1092	offset = dec.flags & F_UTF8	1262	offset = dec.json.flags & F_UTF8
1093	? dec.cur - SvPVX (string)	1263	? dec.cur - SvPVX (string)
1094	: utf8_distance (dec.cur, SvPVX (string));	1264	: utf8_distance (dec.cur, SvPVX (string));
1095		1265
1096	if (offset_return)	1266	if (offset_return)
1097	*offset_return = offset;	1267	*offset_return = offset;
…		…
1116	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1286	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1117	}	1287	}
1118		1288
1119	sv = sv_2mortal (sv);	1289	sv = sv_2mortal (sv);
1120		1290
1121	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))	1291	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))
1122	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1292	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1123		1293
1124	return sv;	1294	return sv;
1125	}	1295	}
1126		1296
…		…
1130	MODULE = JSON::XS PACKAGE = JSON::XS	1300	MODULE = JSON::XS PACKAGE = JSON::XS
1131		1301
1132	BOOT:	1302	BOOT:
1133	{	1303	{
1134	int i;	1304	int i;
1135
1136	memset (decode_hexdigit, 0xff, 256);
1137		1305
1138	for (i = 0; i < 256; ++i)	1306	for (i = 0; i < 256; ++i)
1139	decode_hexdigit [i] =	1307	decode_hexdigit [i] =
1140	i >= '0' && i <= '9' ? i - '0'	1308	i >= '0' && i <= '9' ? i - '0'
1141	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1309	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1142	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1310	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1143	: -1;	1311	: -1;
1144		1312
1145	json_stash = gv_stashpv ("JSON::XS", 1);	1313	json_stash = gv_stashpv ("JSON::XS" , 1);
		1314	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);
		1315
		1316	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );
		1317	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);
1146	}	1318	}
1147		1319
1148	PROTOTYPES: DISABLE	1320	PROTOTYPES: DISABLE
1149		1321
1150	SV new (char dummy)	1322	void new (char *klass)
1151	CODE:	1323	PPCODE:
1152	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);	1324	{
1153	OUTPUT:	1325	SV *pv = NEWSV (0, sizeof (JSON));
1154	RETVAL	1326	SvPOK_only (pv);
		1327	Zero (SvPVX (pv), 1, JSON);
		1328	((JSON *)SvPVX (pv))->flags = F_DEFAULT;
		1329	XPUSHs (sv_2mortal (sv_bless (newRV_noinc (pv), json_stash)));
		1330	}
1155		1331
1156	SV ascii (SV self, int enable = 1)	1332	void ascii (JSON *self, int enable = 1)
1157	ALIAS:	1333	ALIAS:
1158	ascii = F_ASCII	1334	ascii = F_ASCII
1159	latin1 = F_LATIN1	1335	latin1 = F_LATIN1
1160	utf8 = F_UTF8	1336	utf8 = F_UTF8
1161	indent = F_INDENT	1337	indent = F_INDENT
1162	canonical = F_CANONICAL	1338	canonical = F_CANONICAL
1163	space_before = F_SPACE_BEFORE	1339	space_before = F_SPACE_BEFORE
1164	space_after = F_SPACE_AFTER	1340	space_after = F_SPACE_AFTER
1165	pretty = F_PRETTY	1341	pretty = F_PRETTY
1166	allow_nonref = F_ALLOW_NONREF	1342	allow_nonref = F_ALLOW_NONREF
1167	shrink = F_SHRINK	1343	shrink = F_SHRINK
		1344	allow_blessed = F_ALLOW_BLESSED
		1345	convert_blessed = F_CONV_BLESSED
1168	CODE:	1346	PPCODE:
1169	{	1347	{
1170	UV *uv = SvJSON (self);
1171	if (enable)	1348	if (enable)
1172	*uv \|= ix;	1349	self->flags \|= ix;
1173	else	1350	else
1174	*uv &= ~ix;	1351	self->flags &= ~ix;
1175		1352
1176	RETVAL = newSVsv (self);	1353	XPUSHs (ST (0));
1177	}	1354	}
1178	OUTPUT:
1179	RETVAL
1180		1355
1181	SV max_depth (SV self, UV max_depth = 0x80000000UL)	1356	void max_depth (JSON *self, UV max_depth = 0x80000000UL)
1182	CODE:	1357	PPCODE:
1183	{	1358	{
1184	UV *uv = SvJSON (self);
1185	UV log2 = 0;	1359	UV log2 = 0;
1186		1360
1187	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;	1361	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1188		1362
1189	while ((1UL << log2) < max_depth)	1363	while ((1UL << log2) < max_depth)
1190	++log2;	1364	++log2;
1191		1365
1192	uv = uv & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);	1366	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1193		1367
1194	RETVAL = newSVsv (self);	1368	XPUSHs (ST (0));
1195	}	1369	}
1196	OUTPUT:
1197	RETVAL
1198		1370
1199	void encode (SV self, SV scalar)	1371	void max_size (JSON *self, UV max_size = 0)
1200	PPCODE:	1372	PPCODE:
1201	XPUSHs (encode_json (scalar, *SvJSON (self)));	1373	{
		1374	UV log2 = 0;
1202		1375
1203	void decode (SV self, SV jsonstr)	1376	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
		1377	if (max_size == 1) max_size = 2;
		1378
		1379	while ((1UL << log2) < max_size)
		1380	++log2;
		1381
		1382	self->flags = self->flags & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
		1383
		1384	XPUSHs (ST (0));
		1385	}
		1386
		1387	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
		1388	ALIAS:
		1389	filter_json_single_key_object = 1
1204	PPCODE:	1390	PPCODE:
		1391	{
		1392	SV **svp;
		1393
		1394	if (!SvOK (cb))
		1395	cb = 0;
		1396	else
		1397	cb = newSVsv (cb);
		1398
		1399	switch (ix)
		1400	{
		1401	case 0: svp = &self->cb_object ; break;
		1402	case 1: svp = &self->cb_sk_object; break;
		1403	}
		1404
		1405	if (*svp)
		1406	SvREFCNT_dec (*svp);
		1407
		1408	*svp = cb;
		1409
		1410	XPUSHs (ST (0));
		1411	}
		1412
		1413	void encode (JSON self, SV scalar)
		1414	PPCODE:
		1415	XPUSHs (encode_json (scalar, self));
		1416
		1417	void decode (JSON self, SV jsonstr)
		1418	PPCODE:
1205	XPUSHs (decode_json (jsonstr, *SvJSON (self), 0));	1419	XPUSHs (decode_json (jsonstr, self, 0));
1206		1420
1207	void decode_prefix (SV self, SV jsonstr)	1421	void decode_prefix (JSON self, SV jsonstr)
1208	PPCODE:	1422	PPCODE:
1209	{	1423	{
1210	UV offset;	1424	UV offset;
1211	EXTEND (SP, 2);	1425	EXTEND (SP, 2);
1212	PUSHs (decode_json (jsonstr, *SvJSON (self), &offset));	1426	PUSHs (decode_json (jsonstr, self, &offset));
1213	PUSHs (sv_2mortal (newSVuv (offset)));	1427	PUSHs (sv_2mortal (newSVuv (offset)));
1214	}	1428	}
1215		1429
1216	PROTOTYPES: ENABLE	1430	PROTOTYPES: ENABLE
1217		1431
1218	void to_json (SV *scalar)	1432	void to_json (SV *scalar)
1219	ALIAS:
1220	objToJson = 0
1221	PPCODE:	1433	PPCODE:
		1434	{
		1435	JSON json = { F_DEFAULT \| F_UTF8 };
1222	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));	1436	XPUSHs (encode_json (scalar, &json));
		1437	}
1223		1438
1224	void from_json (SV *jsonstr)	1439	void from_json (SV *jsonstr)
1225	ALIAS:
1226	jsonToObj = 0
1227	PPCODE:	1440	PPCODE:
		1441	{
		1442	JSON json = { F_DEFAULT \| F_UTF8 };
1228	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8, 0));	1443	XPUSHs (decode_json (jsonstr, &json, 0));
		1444	}
1229		1445

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Comparing JSON-XS/XS.xs (file contents): Revision 1.37 by root, Wed Jun 6 17:49:01 2007 UTC vs. Revision 1.51 by root, Mon Jul 2 00:48:18 2007 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.37 by root, Wed Jun 6 17:49:01 2007 UTC vs.
Revision 1.51 by root, Mon Jul 2 00:48:18 2007 UTC