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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.39 by root, Mon Jun 11 03:42:57 2007 UTC vs.
Revision 1.55 by root, Mon Jul 23 22:57:40 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
…		…
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;
		68	HV *cb_sk_object;
		69	} JSON;
54		70
55	/////////////////////////////////////////////////////////////////////////////	71	/////////////////////////////////////////////////////////////////////////////
56	// utility functions	72	// utility functions
57		73
58	static UV *	74	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)	75	shrink (SV *sv)
69	{	76	{
70	sv_utf8_downgrade (sv, 1);	77	sv_utf8_downgrade (sv, 1);
71	if (SvLEN (sv) > SvCUR (sv) + 1)	78	if (SvLEN (sv) > SvCUR (sv) + 1)
72	{	79	{
…		…
107	typedef struct	114	typedef struct
108	{	115	{
109	char *cur; // SvPVX (sv) + current output position	116	char *cur; // SvPVX (sv) + current output position
110	char *end; // SvEND (sv)	117	char *end; // SvEND (sv)
111	SV *sv; // result scalar	118	SV *sv; // result scalar
112	U32 flags; // F_*	119	JSON json;
113	U32 indent; // indentation level	120	U32 indent; // indentation level
114	U32 maxdepth; // max. indentation/recursion level	121	U32 maxdepth; // max. indentation/recursion level
115	} enc_t;	122	} enc_t;
116		123
117	inline void	124	inline void
…		…
178	STRLEN clen;	185	STRLEN clen;
179	UV uch;	186	UV uch;
180		187
181	if (is_utf8)	188	if (is_utf8)
182	{	189	{
183	//uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
184	uch = decode_utf8 (str, end - str, &clen);	190	uch = decode_utf8 (str, end - str, &clen);
185	if (clen == (STRLEN)-1)	191	if (clen == (STRLEN)-1)
186	croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);	192	croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);
187	}	193	}
188	else	194	else
…		…
192	}	198	}
193		199
194	if (uch > 0x10FFFFUL)	200	if (uch > 0x10FFFFUL)
195	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);	201	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
196		202
197	if (uch < 0x80 \|\| enc->flags & F_ASCII \|\| (enc->flags & F_LATIN1 && uch > 0xFF))	203	if (uch < 0x80 \|\| enc->json.flags & F_ASCII \|\| (enc->json.flags & F_LATIN1 && uch > 0xFF))
198	{	204	{
199	if (uch > 0xFFFFUL)	205	if (uch > 0xFFFFUL)
200	{	206	{
201	need (enc, len += 11);	207	need (enc, len += 11);
202	sprintf (enc->cur, "\\u%04x\\u%04x",	208	sprintf (enc->cur, "\\u%04x\\u%04x",
…		…
216	*enc->cur++ = hexdigit [(uch >> 0) & 15];	222	*enc->cur++ = hexdigit [(uch >> 0) & 15];
217	}	223	}
218		224
219	str += clen;	225	str += clen;
220	}	226	}
221	else if (enc->flags & F_LATIN1)	227	else if (enc->json.flags & F_LATIN1)
222	{	228	{
223	*enc->cur++ = uch;	229	*enc->cur++ = uch;
224	str += clen;	230	str += clen;
225	}	231	}
226	else if (is_utf8)	232	else if (is_utf8)
…		…
247	}	253	}
248		254
249	inline void	255	inline void
250	encode_indent (enc_t *enc)	256	encode_indent (enc_t *enc)
251	{	257	{
252	if (enc->flags & F_INDENT)	258	if (enc->json.flags & F_INDENT)
253	{	259	{
254	int spaces = enc->indent * INDENT_STEP;	260	int spaces = enc->indent * INDENT_STEP;
255		261
256	need (enc, spaces);	262	need (enc, spaces);
257	memset (enc->cur, ' ', spaces);	263	memset (enc->cur, ' ', spaces);
…		…
267	}	273	}
268		274
269	inline void	275	inline void
270	encode_nl (enc_t *enc)	276	encode_nl (enc_t *enc)
271	{	277	{
272	if (enc->flags & F_INDENT)	278	if (enc->json.flags & F_INDENT)
273	{	279	{
274	need (enc, 1);	280	need (enc, 1);
275	encode_ch (enc, '\n');	281	encode_ch (enc, '\n');
276	}	282	}
277	}	283	}
…		…
279	inline void	285	inline void
280	encode_comma (enc_t *enc)	286	encode_comma (enc_t *enc)
281	{	287	{
282	encode_ch (enc, ',');	288	encode_ch (enc, ',');
283		289
284	if (enc->flags & F_INDENT)	290	if (enc->json.flags & F_INDENT)
285	encode_nl (enc);	291	encode_nl (enc);
286	else if (enc->flags & F_SPACE_AFTER)	292	else if (enc->json.flags & F_SPACE_AFTER)
287	encode_space (enc);	293	encode_space (enc);
288	}	294	}
289		295
290	static void encode_sv (enc_t enc, SV sv);	296	static void encode_sv (enc_t enc, SV sv);
291		297
…		…
300	encode_ch (enc, '['); encode_nl (enc);	306	encode_ch (enc, '['); encode_nl (enc);
301	++enc->indent;	307	++enc->indent;
302		308
303	for (i = 0; i <= len; ++i)	309	for (i = 0; i <= len; ++i)
304	{	310	{
		311	SV **svp = av_fetch (av, i, 0);
		312
305	encode_indent (enc);	313	encode_indent (enc);
306	encode_sv (enc, *av_fetch (av, i, 0));	314
		315	if (svp)
		316	encode_sv (enc, *svp);
		317	else
		318	encode_str (enc, "null", 4, 0);
307		319
308	if (i < len)	320	if (i < len)
309	encode_comma (enc);	321	encode_comma (enc);
310	}	322	}
311		323
…		…
334	else	346	else
335	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	347	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
336		348
337	encode_ch (enc, '"');	349	encode_ch (enc, '"');
338		350
339	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);	351	if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc);
340	encode_ch (enc, ':');	352	encode_ch (enc, ':');
341	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);	353	if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc);
342	encode_sv (enc, HeVAL (he));	354	encode_sv (enc, HeVAL (he));
343	}	355	}
344		356
345	// compare hash entries, used when all keys are bytestrings	357	// compare hash entries, used when all keys are bytestrings
346	static int	358	static int
…		…
381	{	393	{
382	// for canonical output we have to sort by keys first	394	// for canonical output we have to sort by keys first
383	// actually, this is mostly due to the stupid so-called	395	// actually, this is mostly due to the stupid so-called
384	// security workaround added somewhere in 5.8.x.	396	// security workaround added somewhere in 5.8.x.
385	// that randomises hash orderings	397	// that randomises hash orderings
386	if (enc->flags & F_CANONICAL)	398	if (enc->json.flags & F_CANONICAL)
387	{	399	{
388	int fast = 1;	400	int fast = 1;
389	HE *he;	401	HE *he;
390	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	402	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
391	HE *hes = _alloca (count sizeof (HE));	403	HE *hes = _alloca (count sizeof (HE));
…		…
463	svtype svt;	475	svtype svt;
464		476
465	SvGETMAGIC (sv);	477	SvGETMAGIC (sv);
466	svt = SvTYPE (sv);	478	svt = SvTYPE (sv);
467		479
		480	if (expect_false (SvOBJECT (sv)))
		481	{
		482	if (SvSTASH (sv) == json_boolean_stash)
		483	{
		484	if (SvIV (sv))
		485	encode_str (enc, "true", 4, 0);
		486	else
		487	encode_str (enc, "false", 5, 0);
		488	}
		489	else
		490	{
		491	#if 0
		492	if (0 && sv_derived_from (rv, "JSON::Literal"))
		493	{
		494	// not yet
		495	}
		496	#endif
		497	if (enc->json.flags & F_CONV_BLESSED)
		498	{
		499	// we re-bless the reference to get overload and other niceties right
		500	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
		501
		502	if (to_json)
		503	{
		504	int count;
		505	dSP;
		506
		507	ENTER; SAVETMPS; PUSHMARK (SP);
		508	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
		509
		510	// calling with G_SCALAR ensures that we always get a 1 return value
		511	PUTBACK;
		512	call_sv ((SV *)GvCV (to_json), G_SCALAR);
		513	SPAGAIN;
		514
		515	// catch this surprisingly common error
		516	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		517	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		518
		519	sv = POPs;
		520	PUTBACK;
		521
		522	encode_sv (enc, sv);
		523
		524	FREETMPS; LEAVE;
		525	}
		526	else if (enc->json.flags & F_ALLOW_BLESSED)
		527	encode_str (enc, "null", 4, 0);
		528	else
		529	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
		530	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		531	}
		532	else if (enc->json.flags & F_ALLOW_BLESSED)
		533	encode_str (enc, "null", 4, 0);
		534	else
		535	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",
		536	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		537	}
		538	}
468	if (svt == SVt_PVHV)	539	else if (svt == SVt_PVHV)
469	encode_hv (enc, (HV *)sv);	540	encode_hv (enc, (HV *)sv);
470	else if (svt == SVt_PVAV)	541	else if (svt == SVt_PVAV)
471	encode_av (enc, (AV *)sv);	542	encode_av (enc, (AV *)sv);
472	else if (svt < SVt_PVAV)	543	else if (svt < SVt_PVAV)
473	{	544	{
474	if (SvNIOK (sv) && SvIV (sv) == 0)	545	STRLEN len = 0;
		546	char *pv = svt ? SvPV (sv, len) : 0;
		547
		548	if (len == 1 && *pv == '1')
		549	encode_str (enc, "true", 4, 0);
		550	else if (len == 1 && *pv == '0')
475	encode_str (enc, "false", 5, 0);	551	encode_str (enc, "false", 5, 0);
476	else if (SvNIOK (sv) && SvIV (sv) == 1)
477	encode_str (enc, "true", 4, 0);
478	else	552	else
479	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	553	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
480	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	554	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
481	}	555	}
482	else	556	else
…		…
552	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	626	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
553	SvPV_nolen (sv), SvFLAGS (sv));	627	SvPV_nolen (sv), SvFLAGS (sv));
554	}	628	}
555		629
556	static SV *	630	static SV *
557	encode_json (SV *scalar, U32 flags)	631	encode_json (SV scalar, JSON json)
558	{	632	{
559	enc_t enc;	633	enc_t enc;
560		634
561	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))	635	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))
562	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	636	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
563		637
564	enc.flags = flags;	638	enc.json = *json;
565	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	639	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
566	enc.cur = SvPVX (enc.sv);	640	enc.cur = SvPVX (enc.sv);
567	enc.end = SvEND (enc.sv);	641	enc.end = SvEND (enc.sv);
568	enc.indent = 0;	642	enc.indent = 0;
569	enc.maxdepth = DEC_DEPTH (flags);	643	enc.maxdepth = DEC_DEPTH (enc.json.flags);
570		644
571	SvPOK_only (enc.sv);	645	SvPOK_only (enc.sv);
572	encode_sv (&enc, scalar);	646	encode_sv (&enc, scalar);
573		647
574	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	648	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
575	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	649	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
576		650
577	if (!(flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	651	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
578	SvUTF8_on (enc.sv);	652	SvUTF8_on (enc.sv);
579		653
580	if (enc.flags & F_SHRINK)	654	if (enc.json.flags & F_SHRINK)
581	shrink (enc.sv);	655	shrink (enc.sv);
582		656
583	return enc.sv;	657	return enc.sv;
584	}	658	}
585		659
…		…
590	typedef struct	664	typedef struct
591	{	665	{
592	char *cur; // current parser pointer	666	char *cur; // current parser pointer
593	char *end; // end of input string	667	char *end; // end of input string
594	const char *err; // parse error, if != 0	668	const char *err; // parse error, if != 0
595	U32 flags; // F_*	669	JSON json;
596	U32 depth; // recursion depth	670	U32 depth; // recursion depth
597	U32 maxdepth; // recursion depth limit	671	U32 maxdepth; // recursion depth limit
598	} dec_t;	672	} dec_t;
599		673
600	inline void	674	inline void
…		…
631	decode_4hex (dec_t *dec)	705	decode_4hex (dec_t *dec)
632	{	706	{
633	signed char d1, d2, d3, d4;	707	signed char d1, d2, d3, d4;
634	unsigned char cur = (unsigned char )dec->cur;	708	unsigned char cur = (unsigned char )dec->cur;
635		709
636	d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("four hexadecimal digits expected");	710	d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("exactly four hexadecimal digits expected");
637	d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("four hexadecimal digits expected");	711	d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("exactly four hexadecimal digits expected");
638	d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("four hexadecimal digits expected");	712	d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("exactly four hexadecimal digits expected");
639	d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("four hexadecimal digits expected");	713	d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("exactly four hexadecimal digits expected");
640		714
641	dec->cur += 4;	715	dec->cur += 4;
642		716
643	return ((UV)d1) << 12	717	return ((UV)d1) << 12
644	\| ((UV)d2) << 8	718	\| ((UV)d2) << 8
…		…
867	{	941	{
868	// special case the rather common 1..4-digit-int case, assumes 32 bit ints or so	942	// special case the rather common 1..4-digit-int case, assumes 32 bit ints or so
869	if (*start == '-')	943	if (*start == '-')
870	switch (dec->cur - start)	944	switch (dec->cur - start)
871	{	945	{
872	case 2: return newSViv (-( start [1] - '0' ));	946	case 2: return newSViv (-( start [1] - '0' * 1));
873	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	947	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));
874	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));	948	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
875	case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));	949	case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
876	}	950	}
877	else	951	else
878	switch (dec->cur - start)	952	switch (dec->cur - start)
879	{	953	{
880	case 1: return newSViv ( start [0] - '0' );	954	case 1: return newSViv ( start [0] - '0' * 1);
881	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	955	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
882	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);	956	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
883	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);	957	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
884	}	958	}
885		959
…		…
892	if (uv < (UV)IV_MIN)	966	if (uv < (UV)IV_MIN)
893	return newSViv (-(IV)uv);	967	return newSViv (-(IV)uv);
894	}	968	}
895	else	969	else
896	return newSVuv (uv);	970	return newSVuv (uv);
		971
		972	// here would likely be the place for bigint support
897	}	973	}
898	}	974	}
899		975
		976	// if we ever support bigint or bigfloat, this is the place for bigfloat
900	return newSVnv (Atof (start));	977	return newSVnv (Atof (start));
901		978
902	fail:	979	fail:
903	return 0;	980	return 0;
904	}	981	}
…		…
948	}	1025	}
949		1026
950	static SV *	1027	static SV *
951	decode_hv (dec_t *dec)	1028	decode_hv (dec_t *dec)
952	{	1029	{
		1030	SV *sv;
953	HV *hv = newHV ();	1031	HV *hv = newHV ();
954		1032
955	DEC_INC_DEPTH;	1033	DEC_INC_DEPTH;
956	decode_ws (dec);	1034	decode_ws (dec);
957		1035
958	if (*dec->cur == '}')	1036	if (*dec->cur == '}')
959	++dec->cur;	1037	++dec->cur;
960	else	1038	else
961	for (;;)	1039	for (;;)
962	{	1040	{
963	SV key, value;
964
965	decode_ws (dec); EXPECT_CH ('"');	1041	decode_ws (dec); EXPECT_CH ('"');
966		1042
967	key = decode_str (dec);	1043	// heuristic: assume that
968	if (!key)	1044	// a) decode_str + hv_store_ent are abysmally slow.
969	goto fail;	1045	// b) most hash keys are short, simple ascii text.
		1046	// => try to "fast-match" such strings to avoid
		1047	// the overhead of decode_str + hv_store_ent.
		1048	{
		1049	SV *value;
		1050	char *p = dec->cur;
		1051	char *e = p + 24; // only try up to 24 bytes
970		1052
971	decode_ws (dec); EXPECT_CH (':');	1053	for (;;)
972
973	value = decode_sv (dec);
974	if (!value)
975	{	1054	{
		1055	// the >= 0x80 is true on most architectures
		1056	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')
		1057	{
		1058	// slow path, back up and use decode_str
		1059	SV *key = decode_str (dec);
		1060	if (!key)
		1061	goto fail;
		1062
		1063	decode_ws (dec); EXPECT_CH (':');
		1064
		1065	value = decode_sv (dec);
		1066	if (!value)
		1067	{
		1068	SvREFCNT_dec (key);
		1069	goto fail;
		1070	}
		1071
		1072	hv_store_ent (hv, key, value, 0);
976	SvREFCNT_dec (key);	1073	SvREFCNT_dec (key);
		1074
		1075	break;
		1076	}
		1077	else if (*p == '"')
		1078	{
		1079	// fast path, got a simple key
		1080	char *key = dec->cur;
		1081	int len = p - key;
		1082	dec->cur = p + 1;
		1083
		1084	decode_ws (dec); EXPECT_CH (':');
		1085
		1086	value = decode_sv (dec);
		1087	if (!value)
977	goto fail;	1088	goto fail;
		1089
		1090	hv_store (hv, key, len, value, 0);
		1091
		1092	break;
		1093	}
		1094
		1095	++p;
978	}	1096	}
979		1097	}
980	hv_store_ent (hv, key, value, 0);
981	SvREFCNT_dec (key);
982		1098
983	decode_ws (dec);	1099	decode_ws (dec);
984		1100
985	if (*dec->cur == '}')	1101	if (*dec->cur == '}')
986	{	1102	{
…		…
993		1109
994	++dec->cur;	1110	++dec->cur;
995	}	1111	}
996		1112
997	DEC_DEC_DEPTH;	1113	DEC_DEC_DEPTH;
998	return newRV_noinc ((SV *)hv);	1114	sv = newRV_noinc ((SV *)hv);
		1115
		1116	// check filter callbacks
		1117	if (dec->json.flags & F_HOOK)
		1118	{
		1119	if (dec->json.cb_sk_object && HvKEYS (hv) == 1)
		1120	{
		1121	HE cb, he;
		1122
		1123	hv_iterinit (hv);
		1124	he = hv_iternext (hv);
		1125	hv_iterinit (hv);
		1126
		1127	// the next line creates a mortal sv each time its called.
		1128	// might want to optimise this for common cases.
		1129	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
		1130
		1131	if (cb)
		1132	{
		1133	dSP;
		1134	int count;
		1135
		1136	ENTER; SAVETMPS; PUSHMARK (SP);
		1137	XPUSHs (HeVAL (he));
		1138
		1139	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
		1140
		1141	if (count == 1)
		1142	{
		1143	sv = newSVsv (POPs);
		1144	FREETMPS; LEAVE;
		1145	return sv;
		1146	}
		1147
		1148	FREETMPS; LEAVE;
		1149	}
		1150	}
		1151
		1152	if (dec->json.cb_object)
		1153	{
		1154	dSP;
		1155	int count;
		1156
		1157	ENTER; SAVETMPS; PUSHMARK (SP);
		1158	XPUSHs (sv_2mortal (sv));
		1159
		1160	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
		1161
		1162	if (count == 1)
		1163	{
		1164	sv = newSVsv (POPs);
		1165	FREETMPS; LEAVE;
		1166	return sv;
		1167	}
		1168
		1169	SvREFCNT_inc (sv);
		1170	FREETMPS; LEAVE;
		1171	}
		1172	}
		1173
		1174	return sv;
999		1175
1000	fail:	1176	fail:
1001	SvREFCNT_dec (hv);	1177	SvREFCNT_dec (hv);
1002	DEC_DEC_DEPTH;	1178	DEC_DEC_DEPTH;
1003	return 0;	1179	return 0;
…		…
1005		1181
1006	static SV *	1182	static SV *
1007	decode_sv (dec_t *dec)	1183	decode_sv (dec_t *dec)
1008	{	1184	{
1009	decode_ws (dec);	1185	decode_ws (dec);
		1186
		1187	// the beauty of JSON: you need exactly one character lookahead
		1188	// to parse anything.
1010	switch (*dec->cur)	1189	switch (*dec->cur)
1011	{	1190	{
1012	case '"': ++dec->cur; return decode_str (dec);	1191	case '"': ++dec->cur; return decode_str (dec);
1013	case '[': ++dec->cur; return decode_av (dec);	1192	case '[': ++dec->cur; return decode_av (dec);
1014	case '{': ++dec->cur; return decode_hv (dec);	1193	case '{': ++dec->cur; return decode_hv (dec);
…		…
1020		1199
1021	case 't':	1200	case 't':
1022	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1201	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1023	{	1202	{
1024	dec->cur += 4;	1203	dec->cur += 4;
1025	return newSViv (1);	1204	return SvREFCNT_inc (json_true);
1026	}	1205	}
1027	else	1206	else
1028	ERR ("'true' expected");	1207	ERR ("'true' expected");
1029		1208
1030	break;	1209	break;
1031		1210
1032	case 'f':	1211	case 'f':
1033	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1212	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1034	{	1213	{
1035	dec->cur += 5;	1214	dec->cur += 5;
1036	return newSViv (0);	1215	return SvREFCNT_inc (json_false);
1037	}	1216	}
1038	else	1217	else
1039	ERR ("'false' expected");	1218	ERR ("'false' expected");
1040		1219
1041	break;	1220	break;
…		…
1059	fail:	1238	fail:
1060	return 0;	1239	return 0;
1061	}	1240	}
1062		1241
1063	static SV *	1242	static SV *
1064	decode_json (SV string, U32 flags, UV offset_return)	1243	decode_json (SV string, JSON json, UV *offset_return)
1065	{	1244	{
1066	dec_t dec;	1245	dec_t dec;
1067	UV offset;	1246	UV offset;
1068	SV *sv;	1247	SV *sv;
1069		1248
1070	SvGETMAGIC (string);	1249	SvGETMAGIC (string);
1071	SvUPGRADE (string, SVt_PV);	1250	SvUPGRADE (string, SVt_PV);
1072		1251
		1252	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))
		1253	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		1254	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));
		1255
1073	if (flags & F_UTF8)	1256	if (json->flags & F_UTF8)
1074	sv_utf8_downgrade (string, 0);	1257	sv_utf8_downgrade (string, 0);
1075	else	1258	else
1076	sv_utf8_upgrade (string);	1259	sv_utf8_upgrade (string);
1077		1260
1078	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1261	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1079		1262
1080	dec.flags = flags;	1263	dec.json = *json;
1081	dec.cur = SvPVX (string);	1264	dec.cur = SvPVX (string);
1082	dec.end = SvEND (string);	1265	dec.end = SvEND (string);
1083	dec.err = 0;	1266	dec.err = 0;
1084	dec.depth = 0;	1267	dec.depth = 0;
1085	dec.maxdepth = DEC_DEPTH (dec.flags);	1268	dec.maxdepth = DEC_DEPTH (dec.json.flags);
		1269
		1270	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
		1271	dec.json.flags \|= F_HOOK;
1086		1272
1087	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1273	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
1088	sv = decode_sv (&dec);	1274	sv = decode_sv (&dec);
1089		1275
1090	if (!(offset_return \|\| !sv))	1276	if (!(offset_return \|\| !sv))
…		…
1100	}	1286	}
1101	}	1287	}
1102		1288
1103	if (offset_return \|\| !sv)	1289	if (offset_return \|\| !sv)
1104	{	1290	{
1105	offset = dec.flags & F_UTF8	1291	offset = dec.json.flags & F_UTF8
1106	? dec.cur - SvPVX (string)	1292	? dec.cur - SvPVX (string)
1107	: utf8_distance (dec.cur, SvPVX (string));	1293	: utf8_distance (dec.cur, SvPVX (string));
1108		1294
1109	if (offset_return)	1295	if (offset_return)
1110	*offset_return = offset;	1296	*offset_return = offset;
…		…
1129	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1315	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1130	}	1316	}
1131		1317
1132	sv = sv_2mortal (sv);	1318	sv = sv_2mortal (sv);
1133		1319
1134	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))	1320	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))
1135	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1321	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1136		1322
1137	return sv;	1323	return sv;
1138	}	1324	}
1139		1325
…		…
1143	MODULE = JSON::XS PACKAGE = JSON::XS	1329	MODULE = JSON::XS PACKAGE = JSON::XS
1144		1330
1145	BOOT:	1331	BOOT:
1146	{	1332	{
1147	int i;	1333	int i;
1148
1149	memset (decode_hexdigit, 0xff, 256);
1150		1334
1151	for (i = 0; i < 256; ++i)	1335	for (i = 0; i < 256; ++i)
1152	decode_hexdigit [i] =	1336	decode_hexdigit [i] =
1153	i >= '0' && i <= '9' ? i - '0'	1337	i >= '0' && i <= '9' ? i - '0'
1154	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1338	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1155	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1339	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1156	: -1;	1340	: -1;
1157		1341
1158	json_stash = gv_stashpv ("JSON::XS", 1);	1342	json_stash = gv_stashpv ("JSON::XS" , 1);
		1343	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);
		1344
		1345	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );
		1346	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);
1159	}	1347	}
1160		1348
1161	PROTOTYPES: DISABLE	1349	PROTOTYPES: DISABLE
1162		1350
1163	SV new (char dummy)	1351	void new (char *klass)
1164	CODE:	1352	PPCODE:
1165	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);	1353	{
1166	OUTPUT:	1354	SV *pv = NEWSV (0, sizeof (JSON));
1167	RETVAL	1355	SvPOK_only (pv);
		1356	Zero (SvPVX (pv), 1, JSON);
		1357	((JSON *)SvPVX (pv))->flags = F_DEFAULT;
		1358	XPUSHs (sv_2mortal (sv_bless (newRV_noinc (pv), json_stash)));
		1359	}
1168		1360
1169	SV ascii (SV self, int enable = 1)	1361	void ascii (JSON *self, int enable = 1)
1170	ALIAS:	1362	ALIAS:
1171	ascii = F_ASCII	1363	ascii = F_ASCII
1172	latin1 = F_LATIN1	1364	latin1 = F_LATIN1
1173	utf8 = F_UTF8	1365	utf8 = F_UTF8
1174	indent = F_INDENT	1366	indent = F_INDENT
1175	canonical = F_CANONICAL	1367	canonical = F_CANONICAL
1176	space_before = F_SPACE_BEFORE	1368	space_before = F_SPACE_BEFORE
1177	space_after = F_SPACE_AFTER	1369	space_after = F_SPACE_AFTER
1178	pretty = F_PRETTY	1370	pretty = F_PRETTY
1179	allow_nonref = F_ALLOW_NONREF	1371	allow_nonref = F_ALLOW_NONREF
1180	shrink = F_SHRINK	1372	shrink = F_SHRINK
		1373	allow_blessed = F_ALLOW_BLESSED
		1374	convert_blessed = F_CONV_BLESSED
1181	CODE:	1375	PPCODE:
1182	{	1376	{
1183	UV *uv = SvJSON (self);
1184	if (enable)	1377	if (enable)
1185	*uv \|= ix;	1378	self->flags \|= ix;
1186	else	1379	else
1187	*uv &= ~ix;	1380	self->flags &= ~ix;
1188		1381
1189	RETVAL = newSVsv (self);	1382	XPUSHs (ST (0));
1190	}	1383	}
1191	OUTPUT:
1192	RETVAL
1193		1384
1194	SV max_depth (SV self, UV max_depth = 0x80000000UL)	1385	void max_depth (JSON *self, UV max_depth = 0x80000000UL)
1195	CODE:	1386	PPCODE:
1196	{	1387	{
1197	UV *uv = SvJSON (self);
1198	UV log2 = 0;	1388	UV log2 = 0;
1199		1389
1200	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;	1390	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1201		1391
1202	while ((1UL << log2) < max_depth)	1392	while ((1UL << log2) < max_depth)
1203	++log2;	1393	++log2;
1204		1394
1205	uv = uv & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);	1395	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1206		1396
1207	RETVAL = newSVsv (self);	1397	XPUSHs (ST (0));
1208	}	1398	}
1209	OUTPUT:
1210	RETVAL
1211		1399
1212	void encode (SV self, SV scalar)	1400	void max_size (JSON *self, UV max_size = 0)
1213	PPCODE:	1401	PPCODE:
1214	XPUSHs (encode_json (scalar, *SvJSON (self)));	1402	{
		1403	UV log2 = 0;
1215		1404
1216	void decode (SV self, SV jsonstr)	1405	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
		1406	if (max_size == 1) max_size = 2;
		1407
		1408	while ((1UL << log2) < max_size)
		1409	++log2;
		1410
		1411	self->flags = self->flags & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
		1412
		1413	XPUSHs (ST (0));
		1414	}
		1415
		1416	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1217	PPCODE:	1417	PPCODE:
		1418	{
		1419	SvREFCNT_dec (self->cb_object);
		1420	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;
		1421
		1422	XPUSHs (ST (0));
		1423	}
		1424
		1425	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
		1426	PPCODE:
		1427	{
		1428	if (!self->cb_sk_object)
		1429	self->cb_sk_object = newHV ();
		1430
		1431	if (SvOK (cb))
		1432	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
		1433	else
		1434	{
		1435	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
		1436
		1437	if (!HvKEYS (self->cb_sk_object))
		1438	{
		1439	SvREFCNT_dec (self->cb_sk_object);
		1440	self->cb_sk_object = 0;
		1441	}
		1442	}
		1443
		1444	XPUSHs (ST (0));
		1445	}
		1446
		1447	void encode (JSON self, SV scalar)
		1448	PPCODE:
		1449	XPUSHs (encode_json (scalar, self));
		1450
		1451	void decode (JSON self, SV jsonstr)
		1452	PPCODE:
1218	XPUSHs (decode_json (jsonstr, *SvJSON (self), 0));	1453	XPUSHs (decode_json (jsonstr, self, 0));
1219		1454
1220	void decode_prefix (SV self, SV jsonstr)	1455	void decode_prefix (JSON self, SV jsonstr)
1221	PPCODE:	1456	PPCODE:
1222	{	1457	{
1223	UV offset;	1458	UV offset;
1224	EXTEND (SP, 2);	1459	EXTEND (SP, 2);
1225	PUSHs (decode_json (jsonstr, *SvJSON (self), &offset));	1460	PUSHs (decode_json (jsonstr, self, &offset));
1226	PUSHs (sv_2mortal (newSVuv (offset)));	1461	PUSHs (sv_2mortal (newSVuv (offset)));
1227	}	1462	}
1228		1463
		1464	void DESTROY (JSON *self)
		1465	CODE:
		1466	SvREFCNT_dec (self->cb_sk_object);
		1467	SvREFCNT_dec (self->cb_object);
		1468
1229	PROTOTYPES: ENABLE	1469	PROTOTYPES: ENABLE
1230		1470
1231	void to_json (SV *scalar)	1471	void to_json (SV *scalar)
1232	ALIAS:
1233	objToJson = 0
1234	PPCODE:	1472	PPCODE:
		1473	{
		1474	JSON json = { F_DEFAULT \| F_UTF8 };
1235	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));	1475	XPUSHs (encode_json (scalar, &json));
		1476	}
1236		1477
1237	void from_json (SV *jsonstr)	1478	void from_json (SV *jsonstr)
1238	ALIAS:
1239	jsonToObj = 0
1240	PPCODE:	1479	PPCODE:
		1480	{
		1481	JSON json = { F_DEFAULT \| F_UTF8 };
1241	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8, 0));	1482	XPUSHs (decode_json (jsonstr, &json, 0));
		1483	}
1242		1484

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 1.39 by root, Mon Jun 11 03:42:57 2007 UTC vs. Revision 1.55 by root, Mon Jul 23 22:57:40 2007 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.39 by root, Mon Jun 11 03:42:57 2007 UTC vs.
Revision 1.55 by root, Mon Jul 23 22:57:40 2007 UTC