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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.31 by root, Wed May 9 16:33:53 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
		51	#if __GNUC__ >= 3
		52	# define expect(expr,value) __builtin_expect ((expr),(value))
		53	# define inline inline
		54	#else
		55	# define expect(expr,value) (expr)
		56	# define inline static
		57	#endif
		58
		59	#define expect_false(expr) expect ((expr) != 0, 0)
		60	#define expect_true(expr) expect ((expr) != 0, 1)
		61
42	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;
43		69
44	/////////////////////////////////////////////////////////////////////////////	70	/////////////////////////////////////////////////////////////////////////////
45	// utility functions	71	// utility functions
46		72
47	static UV *	73	inline void
48	SvJSON (SV *sv)
49	{
50	if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash))
51	croak ("object is not of type JSON::XS");
52
53	return &SvUVX (SvRV (sv));
54	}
55
56	static void
57	shrink (SV *sv)	74	shrink (SV *sv)
58	{	75	{
59	sv_utf8_downgrade (sv, 1);	76	sv_utf8_downgrade (sv, 1);
60	if (SvLEN (sv) > SvCUR (sv) + 1)	77	if (SvLEN (sv) > SvCUR (sv) + 1)
61	{	78	{
…		…
70	// decode an utf-8 character and return it, or (UV)-1 in	87	// decode an utf-8 character and return it, or (UV)-1 in
71	// case of an error.	88	// case of an error.
72	// we special-case "safe" characters from U+80 .. U+7FF,	89	// we special-case "safe" characters from U+80 .. U+7FF,
73	// but use the very good perl function to parse anything else.	90	// but use the very good perl function to parse anything else.
74	// note that we never call this function for a ascii codepoints	91	// note that we never call this function for a ascii codepoints
75	static UV	92	inline UV
76	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)	93	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)
77	{	94	{
78	if (s[0] > 0xdf \|\| s[0] < 0xc2)	95	if (expect_false (s[0] > 0xdf \|\| s[0] < 0xc2))
79	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);	96	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
80	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)	97	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)
81	{	98	{
82	*clen = 2;	99	*clen = 2;
83	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);	100	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);
…		…
96	typedef struct	113	typedef struct
97	{	114	{
98	char *cur; // SvPVX (sv) + current output position	115	char *cur; // SvPVX (sv) + current output position
99	char *end; // SvEND (sv)	116	char *end; // SvEND (sv)
100	SV *sv; // result scalar	117	SV *sv; // result scalar
101	U32 flags; // F_*	118	JSON json;
102	U32 indent; // indentation level	119	U32 indent; // indentation level
103	U32 maxdepth; // max. indentation/recursion level	120	U32 maxdepth; // max. indentation/recursion level
104	} enc_t;	121	} enc_t;
105		122
106	static void	123	inline void
107	need (enc_t *enc, STRLEN len)	124	need (enc_t *enc, STRLEN len)
108	{	125	{
109	if (enc->cur + len >= enc->end)	126	if (expect_false (enc->cur + len >= enc->end))
110	{	127	{
111	STRLEN cur = enc->cur - SvPVX (enc->sv);	128	STRLEN cur = enc->cur - SvPVX (enc->sv);
112	SvGROW (enc->sv, cur + len + 1);	129	SvGROW (enc->sv, cur + len + 1);
113	enc->cur = SvPVX (enc->sv) + cur;	130	enc->cur = SvPVX (enc->sv) + cur;
114	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	131	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
115	}	132	}
116	}	133	}
117		134
118	static void	135	inline void
119	encode_ch (enc_t *enc, char ch)	136	encode_ch (enc_t *enc, char ch)
120	{	137	{
121	need (enc, 1);	138	need (enc, 1);
122	*enc->cur++ = ch;	139	*enc->cur++ = ch;
123	}	140	}
…		…
131		148
132	while (str < end)	149	while (str < end)
133	{	150	{
134	unsigned char ch = (unsigned char )str;	151	unsigned char ch = (unsigned char )str;
135		152
136	if (ch >= 0x20 && ch < 0x80) // most common case	153	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
137	{	154	{
138	if (ch == '"') // but with slow exceptions	155	if (expect_false (ch == '"')) // but with slow exceptions
139	{	156	{
140	need (enc, len += 1);	157	need (enc, len += 1);
141	*enc->cur++ = '\\';	158	*enc->cur++ = '\\';
142	*enc->cur++ = '"';	159	*enc->cur++ = '"';
143	}	160	}
144	else if (ch == '\\')	161	else if (expect_false (ch == '\\'))
145	{	162	{
146	need (enc, len += 1);	163	need (enc, len += 1);
147	*enc->cur++ = '\\';	164	*enc->cur++ = '\\';
148	*enc->cur++ = '\\';	165	*enc->cur++ = '\\';
149	}	166	}
…		…
167	STRLEN clen;	184	STRLEN clen;
168	UV uch;	185	UV uch;
169		186
170	if (is_utf8)	187	if (is_utf8)
171	{	188	{
172	//uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
173	uch = decode_utf8 (str, end - str, &clen);	189	uch = decode_utf8 (str, end - str, &clen);
174	if (clen == (STRLEN)-1)	190	if (clen == (STRLEN)-1)
175	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);
176	}	192	}
177	else	193	else
…		…
181	}	197	}
182		198
183	if (uch > 0x10FFFFUL)	199	if (uch > 0x10FFFFUL)
184	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);
185		201
186	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))
187	{	203	{
188	if (uch > 0xFFFFUL)	204	if (uch > 0xFFFFUL)
189	{	205	{
190	need (enc, len += 11);	206	need (enc, len += 11);
191	sprintf (enc->cur, "\\u%04x\\u%04x",	207	sprintf (enc->cur, "\\u%04x\\u%04x",
…		…
205	*enc->cur++ = hexdigit [(uch >> 0) & 15];	221	*enc->cur++ = hexdigit [(uch >> 0) & 15];
206	}	222	}
207		223
208	str += clen;	224	str += clen;
209	}	225	}
210	else if (enc->flags & F_LATIN1)	226	else if (enc->json.flags & F_LATIN1)
211	{	227	{
212	*enc->cur++ = uch;	228	*enc->cur++ = uch;
213	str += clen;	229	str += clen;
214	}	230	}
215	else if (is_utf8)	231	else if (is_utf8)
…		…
233		249
234	--len;	250	--len;
235	}	251	}
236	}	252	}
237		253
238	static void	254	inline void
239	encode_indent (enc_t *enc)	255	encode_indent (enc_t *enc)
240	{	256	{
241	if (enc->flags & F_INDENT)	257	if (enc->json.flags & F_INDENT)
242	{	258	{
243	int spaces = enc->indent * INDENT_STEP;	259	int spaces = enc->indent * INDENT_STEP;
244		260
245	need (enc, spaces);	261	need (enc, spaces);
246	memset (enc->cur, ' ', spaces);	262	memset (enc->cur, ' ', spaces);
247	enc->cur += spaces;	263	enc->cur += spaces;
248	}	264	}
249	}	265	}
250		266
251	static void	267	inline void
252	encode_space (enc_t *enc)	268	encode_space (enc_t *enc)
253	{	269	{
254	need (enc, 1);	270	need (enc, 1);
255	encode_ch (enc, ' ');	271	encode_ch (enc, ' ');
256	}	272	}
257		273
258	static void	274	inline void
259	encode_nl (enc_t *enc)	275	encode_nl (enc_t *enc)
260	{	276	{
261	if (enc->flags & F_INDENT)	277	if (enc->json.flags & F_INDENT)
262	{	278	{
263	need (enc, 1);	279	need (enc, 1);
264	encode_ch (enc, '\n');	280	encode_ch (enc, '\n');
265	}	281	}
266	}	282	}
267		283
268	static void	284	inline void
269	encode_comma (enc_t *enc)	285	encode_comma (enc_t *enc)
270	{	286	{
271	encode_ch (enc, ',');	287	encode_ch (enc, ',');
272		288
273	if (enc->flags & F_INDENT)	289	if (enc->json.flags & F_INDENT)
274	encode_nl (enc);	290	encode_nl (enc);
275	else if (enc->flags & F_SPACE_AFTER)	291	else if (enc->json.flags & F_SPACE_AFTER)
276	encode_space (enc);	292	encode_space (enc);
277	}	293	}
278		294
279	static void encode_sv (enc_t enc, SV sv);	295	static void encode_sv (enc_t enc, SV sv);
280		296
…		…
323	else	339	else
324	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	340	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
325		341
326	encode_ch (enc, '"');	342	encode_ch (enc, '"');
327		343
328	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);	344	if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc);
329	encode_ch (enc, ':');	345	encode_ch (enc, ':');
330	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);	346	if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc);
331	encode_sv (enc, HeVAL (he));	347	encode_sv (enc, HeVAL (he));
332	}	348	}
333		349
334	// compare hash entries, used when all keys are bytestrings	350	// compare hash entries, used when all keys are bytestrings
335	static int	351	static int
…		…
370	{	386	{
371	// for canonical output we have to sort by keys first	387	// for canonical output we have to sort by keys first
372	// actually, this is mostly due to the stupid so-called	388	// actually, this is mostly due to the stupid so-called
373	// security workaround added somewhere in 5.8.x.	389	// security workaround added somewhere in 5.8.x.
374	// that randomises hash orderings	390	// that randomises hash orderings
375	if (enc->flags & F_CANONICAL)	391	if (enc->json.flags & F_CANONICAL)
376	{	392	{
377	HE he, hes [count]; // if your compiler dies here, you need to enable C99 mode
378	int fast = 1;	393	int fast = 1;
		394	HE *he;
		395	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
		396	HE *hes = _alloca (count sizeof (HE));
		397	#else
		398	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode
		399	#endif
379		400
380	i = 0;	401	i = 0;
381	while ((he = hv_iternext (hv)))	402	while ((he = hv_iternext (hv)))
382	{	403	{
383	hes [i++] = he;	404	hes [i++] = he;
…		…
447	svtype svt;	468	svtype svt;
448		469
449	SvGETMAGIC (sv);	470	SvGETMAGIC (sv);
450	svt = SvTYPE (sv);	471	svt = SvTYPE (sv);
451		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	}
452	if (svt == SVt_PVHV)	523	else if (svt == SVt_PVHV)
453	encode_hv (enc, (HV *)sv);	524	encode_hv (enc, (HV *)sv);
454	else if (svt == SVt_PVAV)	525	else if (svt == SVt_PVAV)
455	encode_av (enc, (AV *)sv);	526	encode_av (enc, (AV *)sv);
456	else if (svt < SVt_PVAV)	527	else if (svt < SVt_PVAV)
457	{	528	{
458	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')
459	encode_str (enc, "false", 5, 0);	535	encode_str (enc, "false", 5, 0);
460	else if (SvNIOK (sv) && SvIV (sv) == 1)
461	encode_str (enc, "true", 4, 0);
462	else	536	else
463	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",
464	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	538	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
465	}	539	}
466	else	540	else
…		…
481	encode_str (enc, str, len, SvUTF8 (sv));	555	encode_str (enc, str, len, SvUTF8 (sv));
482	encode_ch (enc, '"');	556	encode_ch (enc, '"');
483	}	557	}
484	else if (SvNOKp (sv))	558	else if (SvNOKp (sv))
485	{	559	{
		560	// trust that perl will do the right thing w.r.t. JSON syntax.
486	need (enc, NV_DIG + 32);	561	need (enc, NV_DIG + 32);
487	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);	562	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);
488	enc->cur += strlen (enc->cur);	563	enc->cur += strlen (enc->cur);
489	}	564	}
490	else if (SvIOKp (sv))	565	else if (SvIOKp (sv))
491	{	566	{
492	need (enc, 64);	567	// we assume we can always read an IV as a UV
		568	if (SvUV (sv) & ~(UV)0x7fff)
		569	{
		570	// large integer, use the (rather slow) snprintf way.
		571	need (enc, sizeof (UV) * 3);
493	enc->cur +=	572	enc->cur +=
494	SvIsUV(sv)	573	SvIsUV(sv)
495	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))	574	? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv))
496	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));	575	: snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv));
		576	}
		577	else
		578	{
		579	// optimise the "small number case"
		580	// code will likely be branchless and use only a single multiplication
		581	I32 i = SvIV (sv);
		582	U32 u;
		583	char digit, nz = 0;
		584
		585	need (enc, 6);
		586
		587	*enc->cur = '-'; enc->cur += i < 0 ? 1 : 0;
		588	u = i < 0 ? -i : i;
		589
		590	// convert to 4.28 fixed-point representation
		591	u = u * ((0xfffffff + 10000) / 10000); // 10**5, 5 fractional digits
		592
		593	// now output digit by digit, each time masking out the integer part
		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.
		598	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffff) 5;
		599	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffff) 5;
		600	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffff) 5;
		601	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffff) 5;
		602	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'
		603	}
497	}	604	}
498	else if (SvROK (sv))	605	else if (SvROK (sv))
499	encode_rv (enc, SvRV (sv));	606	encode_rv (enc, SvRV (sv));
500	else if (!SvOK (sv))	607	else if (!SvOK (sv))
501	encode_str (enc, "null", 4, 0);	608	encode_str (enc, "null", 4, 0);
…		…
503	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",
504	SvPV_nolen (sv), SvFLAGS (sv));	611	SvPV_nolen (sv), SvFLAGS (sv));
505	}	612	}
506		613
507	static SV *	614	static SV *
508	encode_json (SV *scalar, U32 flags)	615	encode_json (SV scalar, JSON json)
509	{	616	{
510	enc_t enc;	617	enc_t enc;
511		618
512	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))	619	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))
513	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)");
514		621
515	enc.flags = flags;	622	enc.json = *json;
516	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	623	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
517	enc.cur = SvPVX (enc.sv);	624	enc.cur = SvPVX (enc.sv);
518	enc.end = SvEND (enc.sv);	625	enc.end = SvEND (enc.sv);
519	enc.indent = 0;	626	enc.indent = 0;
520	enc.maxdepth = DEC_DEPTH (flags);	627	enc.maxdepth = DEC_DEPTH (enc.json.flags);
521		628
522	SvPOK_only (enc.sv);	629	SvPOK_only (enc.sv);
523	encode_sv (&enc, scalar);	630	encode_sv (&enc, scalar);
524		631
525	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	632	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
526	*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
527		634
528	if (!(flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	635	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
529	SvUTF8_on (enc.sv);	636	SvUTF8_on (enc.sv);
530		637
531	if (enc.flags & F_SHRINK)	638	if (enc.json.flags & F_SHRINK)
532	shrink (enc.sv);	639	shrink (enc.sv);
533		640
534	return enc.sv;	641	return enc.sv;
535	}	642	}
536		643
…		…
541	typedef struct	648	typedef struct
542	{	649	{
543	char *cur; // current parser pointer	650	char *cur; // current parser pointer
544	char *end; // end of input string	651	char *end; // end of input string
545	const char *err; // parse error, if != 0	652	const char *err; // parse error, if != 0
546	U32 flags; // F_*	653	JSON json;
547	U32 depth; // recursion depth	654	U32 depth; // recursion depth
548	U32 maxdepth; // recursion depth limit	655	U32 maxdepth; // recursion depth limit
549	} dec_t;	656	} dec_t;
550		657
551	static void	658	inline void
552	decode_ws (dec_t *dec)	659	decode_ws (dec_t *dec)
553	{	660	{
554	for (;;)	661	for (;;)
555	{	662	{
556	char ch = *dec->cur;	663	char ch = *dec->cur;
…		…
582	decode_4hex (dec_t *dec)	689	decode_4hex (dec_t *dec)
583	{	690	{
584	signed char d1, d2, d3, d4;	691	signed char d1, d2, d3, d4;
585	unsigned char cur = (unsigned char )dec->cur;	692	unsigned char cur = (unsigned char )dec->cur;
586		693
587	d1 = decode_hexdigit [cur [0]]; if (d1 < 0) ERR ("four hexadecimal digits expected");	694	d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("exactly four hexadecimal digits expected");
588	d2 = decode_hexdigit [cur [1]]; if (d2 < 0) ERR ("four hexadecimal digits expected");	695	d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("exactly four hexadecimal digits expected");
589	d3 = decode_hexdigit [cur [2]]; if (d3 < 0) ERR ("four hexadecimal digits expected");	696	d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("exactly four hexadecimal digits expected");
590	d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected");	697	d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("exactly four hexadecimal digits expected");
591		698
592	dec->cur += 4;	699	dec->cur += 4;
593		700
594	return ((UV)d1) << 12	701	return ((UV)d1) << 12
595	\| ((UV)d2) << 8	702	\| ((UV)d2) << 8
…		…
603	static SV *	710	static SV *
604	decode_str (dec_t *dec)	711	decode_str (dec_t *dec)
605	{	712	{
606	SV *sv = 0;	713	SV *sv = 0;
607	int utf8 = 0;	714	int utf8 = 0;
		715	char *dec_cur = dec->cur;
608		716
609	do	717	do
610	{	718	{
611	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];	719	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];
612	char *cur = buf;	720	char *cur = buf;
613		721
614	do	722	do
615	{	723	{
616	unsigned char ch = (unsigned char )dec->cur++;	724	unsigned char ch = (unsigned char )dec_cur++;
617		725
618	if (ch == '"')	726	if (expect_false (ch == '"'))
619	{	727	{
620	--dec->cur;	728	--dec_cur;
621	break;	729	break;
622	}	730	}
623	else if (ch == '\\')	731	else if (expect_false (ch == '\\'))
624	{	732	{
625	switch (*dec->cur)	733	switch (*dec_cur)
626	{	734	{
627	case '\\':	735	case '\\':
628	case '/':	736	case '/':
629	case '"': cur++ = dec->cur++; break;	737	case '"': cur++ = dec_cur++; break;
630		738
631	case 'b': ++dec->cur; *cur++ = '\010'; break;	739	case 'b': ++dec_cur; *cur++ = '\010'; break;
632	case 't': ++dec->cur; *cur++ = '\011'; break;	740	case 't': ++dec_cur; *cur++ = '\011'; break;
633	case 'n': ++dec->cur; *cur++ = '\012'; break;	741	case 'n': ++dec_cur; *cur++ = '\012'; break;
634	case 'f': ++dec->cur; *cur++ = '\014'; break;	742	case 'f': ++dec_cur; *cur++ = '\014'; break;
635	case 'r': ++dec->cur; *cur++ = '\015'; break;	743	case 'r': ++dec_cur; *cur++ = '\015'; break;
636		744
637	case 'u':	745	case 'u':
638	{	746	{
639	UV lo, hi;	747	UV lo, hi;
640	++dec->cur;	748	++dec_cur;
641		749
		750	dec->cur = dec_cur;
642	hi = decode_4hex (dec);	751	hi = decode_4hex (dec);
		752	dec_cur = dec->cur;
643	if (hi == (UV)-1)	753	if (hi == (UV)-1)
644	goto fail;	754	goto fail;
645		755
646	// possibly a surrogate pair	756	// possibly a surrogate pair
647	if (hi >= 0xd800)	757	if (hi >= 0xd800)
648	if (hi < 0xdc00)	758	if (hi < 0xdc00)
649	{	759	{
650	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')	760	if (dec_cur [0] != '\\' \|\| dec_cur [1] != 'u')
651	ERR ("missing low surrogate character in surrogate pair");	761	ERR ("missing low surrogate character in surrogate pair");
652		762
653	dec->cur += 2;	763	dec_cur += 2;
654		764
		765	dec->cur = dec_cur;
655	lo = decode_4hex (dec);	766	lo = decode_4hex (dec);
		767	dec_cur = dec->cur;
656	if (lo == (UV)-1)	768	if (lo == (UV)-1)
657	goto fail;	769	goto fail;
658		770
659	if (lo < 0xdc00 \|\| lo >= 0xe000)	771	if (lo < 0xdc00 \|\| lo >= 0xe000)
660	ERR ("surrogate pair expected");	772	ERR ("surrogate pair expected");
…		…
674	*cur++ = hi;	786	*cur++ = hi;
675	}	787	}
676	break;	788	break;
677		789
678	default:	790	default:
679	--dec->cur;	791	--dec_cur;
680	ERR ("illegal backslash escape sequence in string");	792	ERR ("illegal backslash escape sequence in string");
681	}	793	}
682	}	794	}
683	else if (ch >= 0x20 && ch <= 0x7f)	795	else if (expect_true (ch >= 0x20 && ch <= 0x7f))
684	*cur++ = ch;	796	*cur++ = ch;
685	else if (ch >= 0x80)	797	else if (ch >= 0x80)
686	{	798	{
687	STRLEN clen;	799	STRLEN clen;
688	UV uch;	800	UV uch;
689		801
690	--dec->cur;	802	--dec_cur;
691		803
692	uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen);	804	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
693	if (clen == (STRLEN)-1)	805	if (clen == (STRLEN)-1)
694	ERR ("malformed UTF-8 character in JSON string");	806	ERR ("malformed UTF-8 character in JSON string");
695		807
696	do	808	do
697	cur++ = dec->cur++;	809	cur++ = dec_cur++;
698	while (--clen);	810	while (--clen);
699		811
700	utf8 = 1;	812	utf8 = 1;
701	}	813	}
702	else	814	else
703	{	815	{
704	--dec->cur;	816	--dec_cur;
705		817
706	if (!ch)	818	if (!ch)
707	ERR ("unexpected end of string while parsing JSON string");	819	ERR ("unexpected end of string while parsing JSON string");
708	else	820	else
709	ERR ("invalid character encountered while parsing JSON string");	821	ERR ("invalid character encountered while parsing JSON string");
…		…
722	}	834	}
723	else	835	else
724	sv = newSVpvn (buf, len);	836	sv = newSVpvn (buf, len);
725	}	837	}
726	}	838	}
727	while (*dec->cur != '"');	839	while (*dec_cur != '"');
728		840
729	++dec->cur;	841	++dec_cur;
730		842
731	if (sv)	843	if (sv)
732	{	844	{
733	SvPOK_only (sv);	845	SvPOK_only (sv);
734	*SvEND (sv) = 0;	846	*SvEND (sv) = 0;
…		…
737	SvUTF8_on (sv);	849	SvUTF8_on (sv);
738	}	850	}
739	else	851	else
740	sv = newSVpvn ("", 0);	852	sv = newSVpvn ("", 0);
741		853
		854	dec->cur = dec_cur;
742	return sv;	855	return sv;
743		856
744	fail:	857	fail:
		858	dec->cur = dec_cur;
745	return 0;	859	return 0;
746	}	860	}
747		861
748	static SV *	862	static SV *
749	decode_num (dec_t *dec)	863	decode_num (dec_t *dec)
…		…
807	is_nv = 1;	921	is_nv = 1;
808	}	922	}
809		923
810	if (!is_nv)	924	if (!is_nv)
811	{	925	{
812	UV uv;	926	// special case the rather common 1..4-digit-int case, assumes 32 bit ints or so
813	int numtype = grok_number (start, dec->cur - start, &uv);	927	if (*start == '-')
814	if (numtype & IS_NUMBER_IN_UV)	928	switch (dec->cur - start)
815	if (numtype & IS_NUMBER_NEG)
816	{	929	{
817	if (uv < (UV)IV_MIN)	930	case 2: return newSViv (-( start [1] - '0' * 1));
818	return newSViv (-(IV)uv);	931	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));
		932	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
		933	case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
819	}	934	}
		935	else
		936	switch (dec->cur - start)
		937	{
		938	case 1: return newSViv ( start [0] - '0' * 1);
		939	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
		940	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
		941	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
		942	}
		943
		944	{
		945	UV uv;
		946	int numtype = grok_number (start, dec->cur - start, &uv);
		947	if (numtype & IS_NUMBER_IN_UV)
		948	if (numtype & IS_NUMBER_NEG)
		949	{
		950	if (uv < (UV)IV_MIN)
		951	return newSViv (-(IV)uv);
		952	}
820	else	953	else
821	return newSVuv (uv);	954	return newSVuv (uv);
		955
		956	// here would likely be the place for bigint support
822	}	957	}
		958	}
823		959
		960	// if we ever support bigint or bigfloat, this is the place for bigfloat
824	return newSVnv (Atof (start));	961	return newSVnv (Atof (start));
825		962
826	fail:	963	fail:
827	return 0;	964	return 0;
828	}	965	}
…		…
872	}	1009	}
873		1010
874	static SV *	1011	static SV *
875	decode_hv (dec_t *dec)	1012	decode_hv (dec_t *dec)
876	{	1013	{
		1014	SV *sv;
877	HV *hv = newHV ();	1015	HV *hv = newHV ();
878		1016
879	DEC_INC_DEPTH;	1017	DEC_INC_DEPTH;
880	decode_ws (dec);	1018	decode_ws (dec);
881		1019
882	if (*dec->cur == '}')	1020	if (*dec->cur == '}')
883	++dec->cur;	1021	++dec->cur;
884	else	1022	else
885	for (;;)	1023	for (;;)
886	{	1024	{
887	SV key, value;
888
889	decode_ws (dec); EXPECT_CH ('"');	1025	decode_ws (dec); EXPECT_CH ('"');
890		1026
891	key = decode_str (dec);	1027	// heuristic: assume that
892	if (!key)	1028	// a) decode_str + hv_store_ent are abysmally slow.
893	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
894		1036
895	decode_ws (dec); EXPECT_CH (':');	1037	for (;;)
896
897	value = decode_sv (dec);
898	if (!value)
899	{	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);
900	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)
901	goto fail;	1072	goto fail;
		1073
		1074	hv_store (hv, key, len, value, 0);
		1075
		1076	break;
		1077	}
		1078
		1079	++p;
902	}	1080	}
903		1081	}
904	hv_store_ent (hv, key, value, 0);
905	SvREFCNT_dec (key);
906		1082
907	decode_ws (dec);	1083	decode_ws (dec);
908		1084
909	if (*dec->cur == '}')	1085	if (*dec->cur == '}')
910	{	1086	{
…		…
917		1093
918	++dec->cur;	1094	++dec->cur;
919	}	1095	}
920		1096
921	DEC_DEC_DEPTH;	1097	DEC_DEC_DEPTH;
922	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;
923		1146
924	fail:	1147	fail:
925	SvREFCNT_dec (hv);	1148	SvREFCNT_dec (hv);
926	DEC_DEC_DEPTH;	1149	DEC_DEC_DEPTH;
927	return 0;	1150	return 0;
…		…
929		1152
930	static SV *	1153	static SV *
931	decode_sv (dec_t *dec)	1154	decode_sv (dec_t *dec)
932	{	1155	{
933	decode_ws (dec);	1156	decode_ws (dec);
		1157
		1158	// the beauty of JSON: you need exactly one character lookahead
		1159	// to parse anything.
934	switch (*dec->cur)	1160	switch (*dec->cur)
935	{	1161	{
936	case '"': ++dec->cur; return decode_str (dec);	1162	case '"': ++dec->cur; return decode_str (dec);
937	case '[': ++dec->cur; return decode_av (dec);	1163	case '[': ++dec->cur; return decode_av (dec);
938	case '{': ++dec->cur; return decode_hv (dec);	1164	case '{': ++dec->cur; return decode_hv (dec);
…		…
944		1170
945	case 't':	1171	case 't':
946	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1172	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
947	{	1173	{
948	dec->cur += 4;	1174	dec->cur += 4;
949	return newSViv (1);	1175	return SvREFCNT_inc (json_true);
950	}	1176	}
951	else	1177	else
952	ERR ("'true' expected");	1178	ERR ("'true' expected");
953		1179
954	break;	1180	break;
955		1181
956	case 'f':	1182	case 'f':
957	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1183	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
958	{	1184	{
959	dec->cur += 5;	1185	dec->cur += 5;
960	return newSViv (0);	1186	return SvREFCNT_inc (json_false);
961	}	1187	}
962	else	1188	else
963	ERR ("'false' expected");	1189	ERR ("'false' expected");
964		1190
965	break;	1191	break;
…		…
983	fail:	1209	fail:
984	return 0;	1210	return 0;
985	}	1211	}
986		1212
987	static SV *	1213	static SV *
988	decode_json (SV string, U32 flags, UV offset_return)	1214	decode_json (SV string, JSON json, UV *offset_return)
989	{	1215	{
990	dec_t dec;	1216	dec_t dec;
991	UV offset;	1217	UV offset;
992	SV *sv;	1218	SV *sv;
993		1219
994	SvGETMAGIC (string);	1220	SvGETMAGIC (string);
995	SvUPGRADE (string, SVt_PV);	1221	SvUPGRADE (string, SVt_PV);
996		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
997	if (flags & F_UTF8)	1227	if (json->flags & F_UTF8)
998	sv_utf8_downgrade (string, 0);	1228	sv_utf8_downgrade (string, 0);
999	else	1229	else
1000	sv_utf8_upgrade (string);	1230	sv_utf8_upgrade (string);
1001		1231
1002	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1232	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1003		1233
1004	dec.flags = flags;	1234	dec.json = *json;
1005	dec.cur = SvPVX (string);	1235	dec.cur = SvPVX (string);
1006	dec.end = SvEND (string);	1236	dec.end = SvEND (string);
1007	dec.err = 0;	1237	dec.err = 0;
1008	dec.depth = 0;	1238	dec.depth = 0;
1009	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;
1010		1243
1011	*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
1012	sv = decode_sv (&dec);	1245	sv = decode_sv (&dec);
1013		1246
1014	if (offset_return \|\| !sv)	1247	if (!(offset_return \|\| !sv))
1015	{
1016	offset = dec.flags & F_UTF8
1017	? dec.cur - SvPVX (string)
1018	: utf8_distance (dec.cur, SvPVX (string));
1019
1020	if (offset_return)
1021	*offset_return = offset;
1022	}
1023	else
1024	{	1248	{
1025	// check for trailing garbage	1249	// check for trailing garbage
1026	decode_ws (&dec);	1250	decode_ws (&dec);
1027		1251
1028	if (*dec.cur)	1252	if (*dec.cur)
1029	{	1253	{
1030	dec.err = "garbage after JSON object";	1254	dec.err = "garbage after JSON object";
1031	SvREFCNT_dec (sv);	1255	SvREFCNT_dec (sv);
1032	sv = 0;	1256	sv = 0;
1033	}	1257	}
		1258	}
		1259
		1260	if (offset_return \|\| !sv)
		1261	{
		1262	offset = dec.json.flags & F_UTF8
		1263	? dec.cur - SvPVX (string)
		1264	: utf8_distance (dec.cur, SvPVX (string));
		1265
		1266	if (offset_return)
		1267	*offset_return = offset;
1034	}	1268	}
1035		1269
1036	if (!sv)	1270	if (!sv)
1037	{	1271	{
1038	SV *uni = sv_newmortal ();	1272	SV *uni = sv_newmortal ();
…		…
1052	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1286	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1053	}	1287	}
1054		1288
1055	sv = sv_2mortal (sv);	1289	sv = sv_2mortal (sv);
1056		1290
1057	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))	1291	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))
1058	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)");
1059		1293
1060	return sv;	1294	return sv;
1061	}	1295	}
1062		1296
…		…
1066	MODULE = JSON::XS PACKAGE = JSON::XS	1300	MODULE = JSON::XS PACKAGE = JSON::XS
1067		1301
1068	BOOT:	1302	BOOT:
1069	{	1303	{
1070	int i;	1304	int i;
1071
1072	memset (decode_hexdigit, 0xff, 256);
1073		1305
1074	for (i = 0; i < 256; ++i)	1306	for (i = 0; i < 256; ++i)
1075	decode_hexdigit [i] =	1307	decode_hexdigit [i] =
1076	i >= '0' && i <= '9' ? i - '0'	1308	i >= '0' && i <= '9' ? i - '0'
1077	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1309	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1078	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1310	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1079	: -1;	1311	: -1;
1080		1312
1081	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);
1082	}	1318	}
1083		1319
1084	PROTOTYPES: DISABLE	1320	PROTOTYPES: DISABLE
1085		1321
1086	SV new (char dummy)	1322	void new (char *klass)
1087	CODE:	1323	PPCODE:
1088	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);	1324	{
1089	OUTPUT:	1325	SV *pv = NEWSV (0, sizeof (JSON));
1090	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	}
1091		1331
1092	SV ascii (SV self, int enable = 1)	1332	void ascii (JSON *self, int enable = 1)
1093	ALIAS:	1333	ALIAS:
1094	ascii = F_ASCII	1334	ascii = F_ASCII
1095	latin1 = F_LATIN1	1335	latin1 = F_LATIN1
1096	utf8 = F_UTF8	1336	utf8 = F_UTF8
1097	indent = F_INDENT	1337	indent = F_INDENT
1098	canonical = F_CANONICAL	1338	canonical = F_CANONICAL
1099	space_before = F_SPACE_BEFORE	1339	space_before = F_SPACE_BEFORE
1100	space_after = F_SPACE_AFTER	1340	space_after = F_SPACE_AFTER
1101	pretty = F_PRETTY	1341	pretty = F_PRETTY
1102	allow_nonref = F_ALLOW_NONREF	1342	allow_nonref = F_ALLOW_NONREF
1103	shrink = F_SHRINK	1343	shrink = F_SHRINK
		1344	allow_blessed = F_ALLOW_BLESSED
		1345	convert_blessed = F_CONV_BLESSED
1104	CODE:	1346	PPCODE:
1105	{	1347	{
1106	UV *uv = SvJSON (self);
1107	if (enable)	1348	if (enable)
1108	*uv \|= ix;	1349	self->flags \|= ix;
1109	else	1350	else
1110	*uv &= ~ix;	1351	self->flags &= ~ix;
1111		1352
1112	RETVAL = newSVsv (self);	1353	XPUSHs (ST (0));
1113	}	1354	}
1114	OUTPUT:
1115	RETVAL
1116		1355
1117	SV max_depth (SV self, UV max_depth = 0x80000000UL)	1356	void max_depth (JSON *self, UV max_depth = 0x80000000UL)
1118	CODE:	1357	PPCODE:
1119	{	1358	{
1120	UV *uv = SvJSON (self);
1121	UV log2 = 0;	1359	UV log2 = 0;
1122		1360
1123	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;	1361	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1124		1362
1125	while ((1UL << log2) < max_depth)	1363	while ((1UL << log2) < max_depth)
1126	++log2;	1364	++log2;
1127		1365
1128	uv = uv & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);	1366	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1129		1367
1130	RETVAL = newSVsv (self);	1368	XPUSHs (ST (0));
1131	}	1369	}
1132	OUTPUT:
1133	RETVAL
1134		1370
1135	void encode (SV self, SV scalar)	1371	void max_size (JSON *self, UV max_size = 0)
1136	PPCODE:	1372	PPCODE:
1137	XPUSHs (encode_json (scalar, *SvJSON (self)));	1373	{
		1374	UV log2 = 0;
1138		1375
1139	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
1140	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:
1141	XPUSHs (decode_json (jsonstr, *SvJSON (self), 0));	1419	XPUSHs (decode_json (jsonstr, self, 0));
1142		1420
1143	void decode_prefix (SV self, SV jsonstr)	1421	void decode_prefix (JSON self, SV jsonstr)
1144	PPCODE:	1422	PPCODE:
1145	{	1423	{
1146	UV offset;	1424	UV offset;
1147	EXTEND (SP, 2);	1425	EXTEND (SP, 2);
1148	PUSHs (decode_json (jsonstr, *SvJSON (self), &offset));	1426	PUSHs (decode_json (jsonstr, self, &offset));
1149	PUSHs (sv_2mortal (newSVuv (offset)));	1427	PUSHs (sv_2mortal (newSVuv (offset)));
1150	}	1428	}
1151		1429
1152	PROTOTYPES: ENABLE	1430	PROTOTYPES: ENABLE
1153		1431
1154	void to_json (SV *scalar)	1432	void to_json (SV *scalar)
1155	ALIAS:
1156	objToJson = 0
1157	PPCODE:	1433	PPCODE:
		1434	{
		1435	JSON json = { F_DEFAULT \| F_UTF8 };
1158	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));	1436	XPUSHs (encode_json (scalar, &json));
		1437	}
1159		1438
1160	void from_json (SV *jsonstr)	1439	void from_json (SV *jsonstr)
1161	ALIAS:
1162	jsonToObj = 0
1163	PPCODE:	1440	PPCODE:
		1441	{
		1442	JSON json = { F_DEFAULT \| F_UTF8 };
1164	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8, 0));	1443	XPUSHs (decode_json (jsonstr, &json, 0));
		1444	}
1165		1445

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Comparing JSON-XS/XS.xs (file contents): Revision 1.31 by root, Wed May 9 16:33:53 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 1.31 by root, Wed May 9 16:33:53 2007 UTC vs.
Revision 1.51 by root, Mon Jul 2 00:48:18 2007 UTC