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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.27 by root, Mon Apr 9 05:09:57 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
		21	#define F_LATIN1 0x00000002UL
15	#define F_UTF8 0x00000002UL	22	#define F_UTF8 0x00000004UL
16	#define F_INDENT 0x00000004UL	23	#define F_INDENT 0x00000008UL
17	#define F_CANONICAL 0x00000008UL	24	#define F_CANONICAL 0x00000010UL
18	#define F_SPACE_BEFORE 0x00000010UL	25	#define F_SPACE_BEFORE 0x00000020UL
19	#define F_SPACE_AFTER 0x00000020UL	26	#define F_SPACE_AFTER 0x00000040UL
20	#define F_ALLOW_NONREF 0x00000080UL	27	#define F_ALLOW_NONREF 0x00000100UL
21	#define F_SHRINK 0x00000100UL	28	#define F_SHRINK 0x00000200UL
		29	#define F_ALLOW_BLESSED 0x00000400UL
		30	#define F_CONV_BLESSED 0x00000800UL
22	#define F_MAXDEPTH 0xf8000000UL	31	#define F_MAXDEPTH 0xf8000000UL
23	#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
24		36
25	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))	37	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
26		38	#define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE ))
27	// F_SELFCONVERT? <=> to_json/toJson
28	// F_BLESSED? <=> { $__class__$ => }
29		39
30	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	40	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
31	#define F_DEFAULT (9UL << S_MAXDEPTH)	41	#define F_DEFAULT (9UL << S_MAXDEPTH)
32		42
33	#define INIT_SIZE 32 // initial scalar size to be allocated	43	#define INIT_SIZE 32 // initial scalar size to be allocated
34	#define INDENT_STEP 3 // spaces per indentation level	44	#define INDENT_STEP 3 // spaces per indentation level
35		45
36	#define UTF8_MAX_LEN 11 // for perls UTF-X: max. number of octets per character
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;
		68	HV *cb_sk_object;
		69	} JSON;
43		70
44	/////////////////////////////////////////////////////////////////////////////	71	/////////////////////////////////////////////////////////////////////////////
45	// utility functions	72	// utility functions
46		73
47	static UV *	74	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)	75	shrink (SV *sv)
58	{	76	{
59	sv_utf8_downgrade (sv, 1);	77	sv_utf8_downgrade (sv, 1);
60	if (SvLEN (sv) > SvCUR (sv) + 1)	78	if (SvLEN (sv) > SvCUR (sv) + 1)
61	{	79	{
…		…
70	// decode an utf-8 character and return it, or (UV)-1 in	88	// decode an utf-8 character and return it, or (UV)-1 in
71	// case of an error.	89	// case of an error.
72	// we special-case "safe" characters from U+80 .. U+7FF,	90	// we special-case "safe" characters from U+80 .. U+7FF,
73	// but use the very good perl function to parse anything else.	91	// but use the very good perl function to parse anything else.
74	// note that we never call this function for a ascii codepoints	92	// note that we never call this function for a ascii codepoints
75	static UV	93	inline UV
76	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)	94	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)
77	{	95	{
78	if (s[0] > 0xdf \|\| s[0] < 0xc2)	96	if (expect_false (s[0] > 0xdf \|\| s[0] < 0xc2))
79	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);	97	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
80	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)	98	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)
81	{	99	{
82	*clen = 2;	100	*clen = 2;
83	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);	101	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);
…		…
96	typedef struct	114	typedef struct
97	{	115	{
98	char *cur; // SvPVX (sv) + current output position	116	char *cur; // SvPVX (sv) + current output position
99	char *end; // SvEND (sv)	117	char *end; // SvEND (sv)
100	SV *sv; // result scalar	118	SV *sv; // result scalar
101	U32 flags; // F_*	119	JSON json;
102	U32 indent; // indentation level	120	U32 indent; // indentation level
103	U32 maxdepth; // max. indentation/recursion level	121	U32 maxdepth; // max. indentation/recursion level
104	} enc_t;	122	} enc_t;
105		123
106	static void	124	inline void
107	need (enc_t *enc, STRLEN len)	125	need (enc_t *enc, STRLEN len)
108	{	126	{
109	if (enc->cur + len >= enc->end)	127	if (expect_false (enc->cur + len >= enc->end))
110	{	128	{
111	STRLEN cur = enc->cur - SvPVX (enc->sv);	129	STRLEN cur = enc->cur - SvPVX (enc->sv);
112	SvGROW (enc->sv, cur + len + 1);	130	SvGROW (enc->sv, cur + len + 1);
113	enc->cur = SvPVX (enc->sv) + cur;	131	enc->cur = SvPVX (enc->sv) + cur;
114	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	132	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
115	}	133	}
116	}	134	}
117		135
118	static void	136	inline void
119	encode_ch (enc_t *enc, char ch)	137	encode_ch (enc_t *enc, char ch)
120	{	138	{
121	need (enc, 1);	139	need (enc, 1);
122	*enc->cur++ = ch;	140	*enc->cur++ = ch;
123	}	141	}
…		…
131		149
132	while (str < end)	150	while (str < end)
133	{	151	{
134	unsigned char ch = (unsigned char )str;	152	unsigned char ch = (unsigned char )str;
135		153
136	if (ch >= 0x20 && ch < 0x80) // most common case	154	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
137	{	155	{
138	if (ch == '"') // but with slow exceptions	156	if (expect_false (ch == '"')) // but with slow exceptions
139	{	157	{
140	need (enc, len += 1);	158	need (enc, len += 1);
141	*enc->cur++ = '\\';	159	*enc->cur++ = '\\';
142	*enc->cur++ = '"';	160	*enc->cur++ = '"';
143	}	161	}
144	else if (ch == '\\')	162	else if (expect_false (ch == '\\'))
145	{	163	{
146	need (enc, len += 1);	164	need (enc, len += 1);
147	*enc->cur++ = '\\';	165	*enc->cur++ = '\\';
148	*enc->cur++ = '\\';	166	*enc->cur++ = '\\';
149	}	167	}
…		…
167	STRLEN clen;	185	STRLEN clen;
168	UV uch;	186	UV uch;
169		187
170	if (is_utf8)	188	if (is_utf8)
171	{	189	{
172	//uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
173	uch = decode_utf8 (str, end - str, &clen);	190	uch = decode_utf8 (str, end - str, &clen);
174	if (clen == (STRLEN)-1)	191	if (clen == (STRLEN)-1)
175	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);
176	}	193	}
177	else	194	else
…		…
181	}	198	}
182		199
183	if (uch > 0x10FFFFUL)	200	if (uch > 0x10FFFFUL)
184	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);
185		202
186	if (uch < 0x80 \|\| enc->flags & F_ASCII)	203	if (uch < 0x80 \|\| enc->json.flags & F_ASCII \|\| (enc->json.flags & F_LATIN1 && uch > 0xFF))
187	{	204	{
188	if (uch > 0xFFFFUL)	205	if (uch > 0xFFFFUL)
189	{	206	{
190	need (enc, len += 11);	207	need (enc, len += 11);
191	sprintf (enc->cur, "\\u%04x\\u%04x",	208	sprintf (enc->cur, "\\u%04x\\u%04x",
…		…
205	*enc->cur++ = hexdigit [(uch >> 0) & 15];	222	*enc->cur++ = hexdigit [(uch >> 0) & 15];
206	}	223	}
207		224
208	str += clen;	225	str += clen;
209	}	226	}
		227	else if (enc->json.flags & F_LATIN1)
		228	{
		229	*enc->cur++ = uch;
		230	str += clen;
		231	}
210	else if (is_utf8)	232	else if (is_utf8)
211	{	233	{
212	need (enc, len += clen);	234	need (enc, len += clen);
213	do	235	do
214	{	236	{
…		…
216	}	238	}
217	while (--clen);	239	while (--clen);
218	}	240	}
219	else	241	else
220	{	242	{
221	need (enc, len += UTF8_MAX_LEN - 1); // never more than 11 bytes needed	243	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed
222	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);	244	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
223	++str;	245	++str;
224	}	246	}
225	}	247	}
226	}	248	}
…		…
228		250
229	--len;	251	--len;
230	}	252	}
231	}	253	}
232		254
233	static void	255	inline void
234	encode_indent (enc_t *enc)	256	encode_indent (enc_t *enc)
235	{	257	{
236	if (enc->flags & F_INDENT)	258	if (enc->json.flags & F_INDENT)
237	{	259	{
238	int spaces = enc->indent * INDENT_STEP;	260	int spaces = enc->indent * INDENT_STEP;
239		261
240	need (enc, spaces);	262	need (enc, spaces);
241	memset (enc->cur, ' ', spaces);	263	memset (enc->cur, ' ', spaces);
242	enc->cur += spaces;	264	enc->cur += spaces;
243	}	265	}
244	}	266	}
245		267
246	static void	268	inline void
247	encode_space (enc_t *enc)	269	encode_space (enc_t *enc)
248	{	270	{
249	need (enc, 1);	271	need (enc, 1);
250	encode_ch (enc, ' ');	272	encode_ch (enc, ' ');
251	}	273	}
252		274
253	static void	275	inline void
254	encode_nl (enc_t *enc)	276	encode_nl (enc_t *enc)
255	{	277	{
256	if (enc->flags & F_INDENT)	278	if (enc->json.flags & F_INDENT)
257	{	279	{
258	need (enc, 1);	280	need (enc, 1);
259	encode_ch (enc, '\n');	281	encode_ch (enc, '\n');
260	}	282	}
261	}	283	}
262		284
263	static void	285	inline void
264	encode_comma (enc_t *enc)	286	encode_comma (enc_t *enc)
265	{	287	{
266	encode_ch (enc, ',');	288	encode_ch (enc, ',');
267		289
268	if (enc->flags & F_INDENT)	290	if (enc->json.flags & F_INDENT)
269	encode_nl (enc);	291	encode_nl (enc);
270	else if (enc->flags & F_SPACE_AFTER)	292	else if (enc->json.flags & F_SPACE_AFTER)
271	encode_space (enc);	293	encode_space (enc);
272	}	294	}
273		295
274	static void encode_sv (enc_t enc, SV sv);	296	static void encode_sv (enc_t enc, SV sv);
275		297
…		…
284	encode_ch (enc, '['); encode_nl (enc);	306	encode_ch (enc, '['); encode_nl (enc);
285	++enc->indent;	307	++enc->indent;
286		308
287	for (i = 0; i <= len; ++i)	309	for (i = 0; i <= len; ++i)
288	{	310	{
		311	SV **svp = av_fetch (av, i, 0);
		312
289	encode_indent (enc);	313	encode_indent (enc);
290	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);
291		319
292	if (i < len)	320	if (i < len)
293	encode_comma (enc);	321	encode_comma (enc);
294	}	322	}
295		323
…		…
318	else	346	else
319	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	347	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
320		348
321	encode_ch (enc, '"');	349	encode_ch (enc, '"');
322		350
323	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);	351	if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc);
324	encode_ch (enc, ':');	352	encode_ch (enc, ':');
325	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);	353	if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc);
326	encode_sv (enc, HeVAL (he));	354	encode_sv (enc, HeVAL (he));
327	}	355	}
328		356
329	// compare hash entries, used when all keys are bytestrings	357	// compare hash entries, used when all keys are bytestrings
330	static int	358	static int
…		…
365	{	393	{
366	// for canonical output we have to sort by keys first	394	// for canonical output we have to sort by keys first
367	// actually, this is mostly due to the stupid so-called	395	// actually, this is mostly due to the stupid so-called
368	// security workaround added somewhere in 5.8.x.	396	// security workaround added somewhere in 5.8.x.
369	// that randomises hash orderings	397	// that randomises hash orderings
370	if (enc->flags & F_CANONICAL)	398	if (enc->json.flags & F_CANONICAL)
371	{	399	{
372	HE he, hes [count]; // if your compiler dies here, you need to enable C99 mode
373	int fast = 1;	400	int fast = 1;
		401	HE *he;
		402	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
		403	HE *hes = _alloca (count sizeof (HE));
		404	#else
		405	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode
		406	#endif
374		407
375	i = 0;	408	i = 0;
376	while ((he = hv_iternext (hv)))	409	while ((he = hv_iternext (hv)))
377	{	410	{
378	hes [i++] = he;	411	hes [i++] = he;
…		…
442	svtype svt;	475	svtype svt;
443		476
444	SvGETMAGIC (sv);	477	SvGETMAGIC (sv);
445	svt = SvTYPE (sv);	478	svt = SvTYPE (sv);
446		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	}
447	if (svt == SVt_PVHV)	539	else if (svt == SVt_PVHV)
448	encode_hv (enc, (HV *)sv);	540	encode_hv (enc, (HV *)sv);
449	else if (svt == SVt_PVAV)	541	else if (svt == SVt_PVAV)
450	encode_av (enc, (AV *)sv);	542	encode_av (enc, (AV *)sv);
451	else if (svt < SVt_PVAV)	543	else if (svt < SVt_PVAV)
452	{	544	{
453	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')
454	encode_str (enc, "false", 5, 0);	551	encode_str (enc, "false", 5, 0);
455	else if (SvNIOK (sv) && SvIV (sv) == 1)
456	encode_str (enc, "true", 4, 0);
457	else	552	else
458	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",
459	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	554	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
460	}	555	}
461	else	556	else
…		…
476	encode_str (enc, str, len, SvUTF8 (sv));	571	encode_str (enc, str, len, SvUTF8 (sv));
477	encode_ch (enc, '"');	572	encode_ch (enc, '"');
478	}	573	}
479	else if (SvNOKp (sv))	574	else if (SvNOKp (sv))
480	{	575	{
		576	// trust that perl will do the right thing w.r.t. JSON syntax.
481	need (enc, NV_DIG + 32);	577	need (enc, NV_DIG + 32);
482	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);	578	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);
483	enc->cur += strlen (enc->cur);	579	enc->cur += strlen (enc->cur);
484	}	580	}
485	else if (SvIOKp (sv))	581	else if (SvIOKp (sv))
486	{	582	{
487	need (enc, 64);	583	// we assume we can always read an IV as a UV
		584	if (SvUV (sv) & ~(UV)0x7fff)
		585	{
		586	// large integer, use the (rather slow) snprintf way.
		587	need (enc, sizeof (UV) * 3);
488	enc->cur +=	588	enc->cur +=
489	SvIsUV(sv)	589	SvIsUV(sv)
490	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))	590	? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv))
491	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));	591	: snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv));
		592	}
		593	else
		594	{
		595	// optimise the "small number case"
		596	// code will likely be branchless and use only a single multiplication
		597	I32 i = SvIV (sv);
		598	U32 u;
		599	char digit, nz = 0;
		600
		601	need (enc, 6);
		602
		603	*enc->cur = '-'; enc->cur += i < 0 ? 1 : 0;
		604	u = i < 0 ? -i : i;
		605
		606	// convert to 4.28 fixed-point representation
		607	u = u * ((0xfffffff + 10000) / 10000); // 10**5, 5 fractional digits
		608
		609	// now output digit by digit, each time masking out the integer part
		610	// and multiplying by 5 while moving the decimal point one to the right,
		611	// resulting in a net multiplication by 10.
		612	// we always write the digit to memory but conditionally increment
		613	// the pointer, to ease the usage of conditional move instructions.
		614	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffff) 5;
		615	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffff) 5;
		616	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffff) 5;
		617	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffff) 5;
		618	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'
		619	}
492	}	620	}
493	else if (SvROK (sv))	621	else if (SvROK (sv))
494	encode_rv (enc, SvRV (sv));	622	encode_rv (enc, SvRV (sv));
495	else if (!SvOK (sv))	623	else if (!SvOK (sv))
496	encode_str (enc, "null", 4, 0);	624	encode_str (enc, "null", 4, 0);
…		…
498	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",
499	SvPV_nolen (sv), SvFLAGS (sv));	627	SvPV_nolen (sv), SvFLAGS (sv));
500	}	628	}
501		629
502	static SV *	630	static SV *
503	encode_json (SV *scalar, U32 flags)	631	encode_json (SV scalar, JSON json)
504	{	632	{
505	enc_t enc;	633	enc_t enc;
506		634
507	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))	635	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))
508	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)");
509		637
510	enc.flags = flags;	638	enc.json = *json;
511	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	639	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
512	enc.cur = SvPVX (enc.sv);	640	enc.cur = SvPVX (enc.sv);
513	enc.end = SvEND (enc.sv);	641	enc.end = SvEND (enc.sv);
514	enc.indent = 0;	642	enc.indent = 0;
515	enc.maxdepth = DEC_DEPTH (flags);	643	enc.maxdepth = DEC_DEPTH (enc.json.flags);
516		644
517	SvPOK_only (enc.sv);	645	SvPOK_only (enc.sv);
518	encode_sv (&enc, scalar);	646	encode_sv (&enc, scalar);
519		647
520	if (!(flags & (F_ASCII \| F_UTF8)))
521	SvUTF8_on (enc.sv);
522
523	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	648	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
524	*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
525		650
		651	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
		652	SvUTF8_on (enc.sv);
		653
526	if (enc.flags & F_SHRINK)	654	if (enc.json.flags & F_SHRINK)
527	shrink (enc.sv);	655	shrink (enc.sv);
528		656
529	return enc.sv;	657	return enc.sv;
530	}	658	}
531		659
…		…
536	typedef struct	664	typedef struct
537	{	665	{
538	char *cur; // current parser pointer	666	char *cur; // current parser pointer
539	char *end; // end of input string	667	char *end; // end of input string
540	const char *err; // parse error, if != 0	668	const char *err; // parse error, if != 0
541	U32 flags; // F_*	669	JSON json;
542	U32 depth; // recursion depth	670	U32 depth; // recursion depth
543	U32 maxdepth; // recursion depth limit	671	U32 maxdepth; // recursion depth limit
544	} dec_t;	672	} dec_t;
545		673
546	static void	674	inline void
547	decode_ws (dec_t *dec)	675	decode_ws (dec_t *dec)
548	{	676	{
549	for (;;)	677	for (;;)
550	{	678	{
551	char ch = *dec->cur;	679	char ch = *dec->cur;
…		…
577	decode_4hex (dec_t *dec)	705	decode_4hex (dec_t *dec)
578	{	706	{
579	signed char d1, d2, d3, d4;	707	signed char d1, d2, d3, d4;
580	unsigned char cur = (unsigned char )dec->cur;	708	unsigned char cur = (unsigned char )dec->cur;
581		709
582	d1 = decode_hexdigit [cur [0]]; if (d1 < 0) ERR ("four hexadecimal digits expected");	710	d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("exactly four hexadecimal digits expected");
583	d2 = decode_hexdigit [cur [1]]; if (d2 < 0) ERR ("four hexadecimal digits expected");	711	d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("exactly four hexadecimal digits expected");
584	d3 = decode_hexdigit [cur [2]]; if (d3 < 0) ERR ("four hexadecimal digits expected");	712	d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("exactly four hexadecimal digits expected");
585	d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected");	713	d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("exactly four hexadecimal digits expected");
586		714
587	dec->cur += 4;	715	dec->cur += 4;
588		716
589	return ((UV)d1) << 12	717	return ((UV)d1) << 12
590	\| ((UV)d2) << 8	718	\| ((UV)d2) << 8
…		…
598	static SV *	726	static SV *
599	decode_str (dec_t *dec)	727	decode_str (dec_t *dec)
600	{	728	{
601	SV *sv = 0;	729	SV *sv = 0;
602	int utf8 = 0;	730	int utf8 = 0;
		731	char *dec_cur = dec->cur;
603		732
604	do	733	do
605	{	734	{
606	char buf [SHORT_STRING_LEN + UTF8_MAX_LEN];	735	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];
607	char *cur = buf;	736	char *cur = buf;
608		737
609	do	738	do
610	{	739	{
611	unsigned char ch = (unsigned char )dec->cur++;	740	unsigned char ch = (unsigned char )dec_cur++;
612		741
613	if (ch == '"')	742	if (expect_false (ch == '"'))
614	{	743	{
615	--dec->cur;	744	--dec_cur;
616	break;	745	break;
617	}	746	}
618	else if (ch == '\\')	747	else if (expect_false (ch == '\\'))
619	{	748	{
620	switch (*dec->cur)	749	switch (*dec_cur)
621	{	750	{
622	case '\\':	751	case '\\':
623	case '/':	752	case '/':
624	case '"': cur++ = dec->cur++; break;	753	case '"': cur++ = dec_cur++; break;
625		754
626	case 'b': ++dec->cur; *cur++ = '\010'; break;	755	case 'b': ++dec_cur; *cur++ = '\010'; break;
627	case 't': ++dec->cur; *cur++ = '\011'; break;	756	case 't': ++dec_cur; *cur++ = '\011'; break;
628	case 'n': ++dec->cur; *cur++ = '\012'; break;	757	case 'n': ++dec_cur; *cur++ = '\012'; break;
629	case 'f': ++dec->cur; *cur++ = '\014'; break;	758	case 'f': ++dec_cur; *cur++ = '\014'; break;
630	case 'r': ++dec->cur; *cur++ = '\015'; break;	759	case 'r': ++dec_cur; *cur++ = '\015'; break;
631		760
632	case 'u':	761	case 'u':
633	{	762	{
634	UV lo, hi;	763	UV lo, hi;
635	++dec->cur;	764	++dec_cur;
636		765
		766	dec->cur = dec_cur;
637	hi = decode_4hex (dec);	767	hi = decode_4hex (dec);
		768	dec_cur = dec->cur;
638	if (hi == (UV)-1)	769	if (hi == (UV)-1)
639	goto fail;	770	goto fail;
640		771
641	// possibly a surrogate pair	772	// possibly a surrogate pair
642	if (hi >= 0xd800)	773	if (hi >= 0xd800)
643	if (hi < 0xdc00)	774	if (hi < 0xdc00)
644	{	775	{
645	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')	776	if (dec_cur [0] != '\\' \|\| dec_cur [1] != 'u')
646	ERR ("missing low surrogate character in surrogate pair");	777	ERR ("missing low surrogate character in surrogate pair");
647		778
648	dec->cur += 2;	779	dec_cur += 2;
649		780
		781	dec->cur = dec_cur;
650	lo = decode_4hex (dec);	782	lo = decode_4hex (dec);
		783	dec_cur = dec->cur;
651	if (lo == (UV)-1)	784	if (lo == (UV)-1)
652	goto fail;	785	goto fail;
653		786
654	if (lo < 0xdc00 \|\| lo >= 0xe000)	787	if (lo < 0xdc00 \|\| lo >= 0xe000)
655	ERR ("surrogate pair expected");	788	ERR ("surrogate pair expected");
…		…
669	*cur++ = hi;	802	*cur++ = hi;
670	}	803	}
671	break;	804	break;
672		805
673	default:	806	default:
674	--dec->cur;	807	--dec_cur;
675	ERR ("illegal backslash escape sequence in string");	808	ERR ("illegal backslash escape sequence in string");
676	}	809	}
677	}	810	}
678	else if (ch >= 0x20 && ch <= 0x7f)	811	else if (expect_true (ch >= 0x20 && ch <= 0x7f))
679	*cur++ = ch;	812	*cur++ = ch;
680	else if (ch >= 0x80)	813	else if (ch >= 0x80)
681	{	814	{
682	STRLEN clen;	815	STRLEN clen;
683	UV uch;	816	UV uch;
684		817
685	--dec->cur;	818	--dec_cur;
686		819
687	uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen);	820	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
688	if (clen == (STRLEN)-1)	821	if (clen == (STRLEN)-1)
689	ERR ("malformed UTF-8 character in JSON string");	822	ERR ("malformed UTF-8 character in JSON string");
690		823
691	do	824	do
692	cur++ = dec->cur++;	825	cur++ = dec_cur++;
693	while (--clen);	826	while (--clen);
694		827
695	utf8 = 1;	828	utf8 = 1;
696	}	829	}
697	else	830	else
698	{	831	{
699	--dec->cur;	832	--dec_cur;
700		833
701	if (!ch)	834	if (!ch)
702	ERR ("unexpected end of string while parsing JSON string");	835	ERR ("unexpected end of string while parsing JSON string");
703	else	836	else
704	ERR ("invalid character encountered while parsing JSON string");	837	ERR ("invalid character encountered while parsing JSON string");
…		…
717	}	850	}
718	else	851	else
719	sv = newSVpvn (buf, len);	852	sv = newSVpvn (buf, len);
720	}	853	}
721	}	854	}
722	while (*dec->cur != '"');	855	while (*dec_cur != '"');
723		856
724	++dec->cur;	857	++dec_cur;
725		858
726	if (sv)	859	if (sv)
727	{	860	{
728	SvPOK_only (sv);	861	SvPOK_only (sv);
729	*SvEND (sv) = 0;	862	*SvEND (sv) = 0;
…		…
732	SvUTF8_on (sv);	865	SvUTF8_on (sv);
733	}	866	}
734	else	867	else
735	sv = newSVpvn ("", 0);	868	sv = newSVpvn ("", 0);
736		869
		870	dec->cur = dec_cur;
737	return sv;	871	return sv;
738		872
739	fail:	873	fail:
		874	dec->cur = dec_cur;
740	return 0;	875	return 0;
741	}	876	}
742		877
743	static SV *	878	static SV *
744	decode_num (dec_t *dec)	879	decode_num (dec_t *dec)
…		…
802	is_nv = 1;	937	is_nv = 1;
803	}	938	}
804		939
805	if (!is_nv)	940	if (!is_nv)
806	{	941	{
807	UV uv;	942	// special case the rather common 1..4-digit-int case, assumes 32 bit ints or so
808	int numtype = grok_number (start, dec->cur - start, &uv);	943	if (*start == '-')
809	if (numtype & IS_NUMBER_IN_UV)	944	switch (dec->cur - start)
810	if (numtype & IS_NUMBER_NEG)
811	{	945	{
812	if (uv < (UV)IV_MIN)	946	case 2: return newSViv (-( start [1] - '0' * 1));
813	return newSViv (-(IV)uv);	947	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));
		948	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
		949	case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
814	}	950	}
		951	else
		952	switch (dec->cur - start)
		953	{
		954	case 1: return newSViv ( start [0] - '0' * 1);
		955	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
		956	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
		957	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
		958	}
		959
		960	{
		961	UV uv;
		962	int numtype = grok_number (start, dec->cur - start, &uv);
		963	if (numtype & IS_NUMBER_IN_UV)
		964	if (numtype & IS_NUMBER_NEG)
		965	{
		966	if (uv < (UV)IV_MIN)
		967	return newSViv (-(IV)uv);
		968	}
815	else	969	else
816	return newSVuv (uv);	970	return newSVuv (uv);
		971
		972	// here would likely be the place for bigint support
817	}	973	}
		974	}
818		975
		976	// if we ever support bigint or bigfloat, this is the place for bigfloat
819	return newSVnv (Atof (start));	977	return newSVnv (Atof (start));
820		978
821	fail:	979	fail:
822	return 0;	980	return 0;
823	}	981	}
…		…
867	}	1025	}
868		1026
869	static SV *	1027	static SV *
870	decode_hv (dec_t *dec)	1028	decode_hv (dec_t *dec)
871	{	1029	{
		1030	SV *sv;
872	HV *hv = newHV ();	1031	HV *hv = newHV ();
873		1032
874	DEC_INC_DEPTH;	1033	DEC_INC_DEPTH;
875	decode_ws (dec);	1034	decode_ws (dec);
876		1035
877	if (*dec->cur == '}')	1036	if (*dec->cur == '}')
878	++dec->cur;	1037	++dec->cur;
879	else	1038	else
880	for (;;)	1039	for (;;)
881	{	1040	{
882	SV key, value;
883
884	decode_ws (dec); EXPECT_CH ('"');	1041	decode_ws (dec); EXPECT_CH ('"');
885		1042
886	key = decode_str (dec);	1043	// heuristic: assume that
887	if (!key)	1044	// a) decode_str + hv_store_ent are abysmally slow.
888	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
889		1052
890	decode_ws (dec); EXPECT_CH (':');	1053	for (;;)
891
892	value = decode_sv (dec);
893	if (!value)
894	{	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);
895	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)
896	goto fail;	1088	goto fail;
		1089
		1090	hv_store (hv, key, len, value, 0);
		1091
		1092	break;
		1093	}
		1094
		1095	++p;
897	}	1096	}
898		1097	}
899	hv_store_ent (hv, key, value, 0);
900	SvREFCNT_dec (key);
901		1098
902	decode_ws (dec);	1099	decode_ws (dec);
903		1100
904	if (*dec->cur == '}')	1101	if (*dec->cur == '}')
905	{	1102	{
…		…
912		1109
913	++dec->cur;	1110	++dec->cur;
914	}	1111	}
915		1112
916	DEC_DEC_DEPTH;	1113	DEC_DEC_DEPTH;
917	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;
918		1175
919	fail:	1176	fail:
920	SvREFCNT_dec (hv);	1177	SvREFCNT_dec (hv);
921	DEC_DEC_DEPTH;	1178	DEC_DEC_DEPTH;
922	return 0;	1179	return 0;
…		…
924		1181
925	static SV *	1182	static SV *
926	decode_sv (dec_t *dec)	1183	decode_sv (dec_t *dec)
927	{	1184	{
928	decode_ws (dec);	1185	decode_ws (dec);
		1186
		1187	// the beauty of JSON: you need exactly one character lookahead
		1188	// to parse anything.
929	switch (*dec->cur)	1189	switch (*dec->cur)
930	{	1190	{
931	case '"': ++dec->cur; return decode_str (dec);	1191	case '"': ++dec->cur; return decode_str (dec);
932	case '[': ++dec->cur; return decode_av (dec);	1192	case '[': ++dec->cur; return decode_av (dec);
933	case '{': ++dec->cur; return decode_hv (dec);	1193	case '{': ++dec->cur; return decode_hv (dec);
…		…
939		1199
940	case 't':	1200	case 't':
941	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1201	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
942	{	1202	{
943	dec->cur += 4;	1203	dec->cur += 4;
944	return newSViv (1);	1204	return SvREFCNT_inc (json_true);
945	}	1205	}
946	else	1206	else
947	ERR ("'true' expected");	1207	ERR ("'true' expected");
948		1208
949	break;	1209	break;
950		1210
951	case 'f':	1211	case 'f':
952	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1212	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
953	{	1213	{
954	dec->cur += 5;	1214	dec->cur += 5;
955	return newSViv (0);	1215	return SvREFCNT_inc (json_false);
956	}	1216	}
957	else	1217	else
958	ERR ("'false' expected");	1218	ERR ("'false' expected");
959		1219
960	break;	1220	break;
…		…
978	fail:	1238	fail:
979	return 0;	1239	return 0;
980	}	1240	}
981		1241
982	static SV *	1242	static SV *
983	decode_json (SV *string, U32 flags)	1243	decode_json (SV string, JSON json, UV *offset_return)
984	{	1244	{
985	dec_t dec;	1245	dec_t dec;
		1246	UV offset;
986	SV *sv;	1247	SV *sv;
987		1248
		1249	SvGETMAGIC (string);
988	SvUPGRADE (string, SVt_PV);	1250	SvUPGRADE (string, SVt_PV);
989		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
990	if (flags & F_UTF8)	1256	if (json->flags & F_UTF8)
991	sv_utf8_downgrade (string, 0);	1257	sv_utf8_downgrade (string, 0);
992	else	1258	else
993	sv_utf8_upgrade (string);	1259	sv_utf8_upgrade (string);
994		1260
995	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1261	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
996		1262
997	dec.flags = flags;	1263	dec.json = *json;
998	dec.cur = SvPVX (string);	1264	dec.cur = SvPVX (string);
999	dec.end = SvEND (string);	1265	dec.end = SvEND (string);
1000	dec.err = 0;	1266	dec.err = 0;
1001	dec.depth = 0;	1267	dec.depth = 0;
1002	dec.maxdepth = DEC_DEPTH (dec.flags);	1268	dec.maxdepth = DEC_DEPTH (dec.json.flags);
1003		1269
		1270	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
		1271	dec.json.flags \|= F_HOOK;
		1272
1004	*dec.end = 0; // this should basically be a nop, too, but make sure its there	1273	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
1005	sv = decode_sv (&dec);	1274	sv = decode_sv (&dec);
1006		1275
		1276	if (!(offset_return \|\| !sv))
		1277	{
		1278	// check for trailing garbage
		1279	decode_ws (&dec);
		1280
		1281	if (*dec.cur)
		1282	{
		1283	dec.err = "garbage after JSON object";
		1284	SvREFCNT_dec (sv);
		1285	sv = 0;
		1286	}
		1287	}
		1288
		1289	if (offset_return \|\| !sv)
		1290	{
		1291	offset = dec.json.flags & F_UTF8
		1292	? dec.cur - SvPVX (string)
		1293	: utf8_distance (dec.cur, SvPVX (string));
		1294
		1295	if (offset_return)
		1296	*offset_return = offset;
		1297	}
		1298
1007	if (!sv)	1299	if (!sv)
1008	{	1300	{
1009	IV offset = dec.flags & F_UTF8
1010	? dec.cur - SvPVX (string)
1011	: utf8_distance (dec.cur, SvPVX (string));
1012	SV *uni = sv_newmortal ();	1301	SV *uni = sv_newmortal ();
1013		1302
1014	// horrible hack to silence warning inside pv_uni_display	1303	// horrible hack to silence warning inside pv_uni_display
1015	COP cop = *PL_curcop;	1304	COP cop = *PL_curcop;
1016	cop.cop_warnings = pWARN_NONE;	1305	cop.cop_warnings = pWARN_NONE;
…		…
1026	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1315	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1027	}	1316	}
1028		1317
1029	sv = sv_2mortal (sv);	1318	sv = sv_2mortal (sv);
1030		1319
1031	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))	1320	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))
1032	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)");
1033		1322
1034	return sv;	1323	return sv;
1035	}	1324	}
1036		1325
…		…
1040	MODULE = JSON::XS PACKAGE = JSON::XS	1329	MODULE = JSON::XS PACKAGE = JSON::XS
1041		1330
1042	BOOT:	1331	BOOT:
1043	{	1332	{
1044	int i;	1333	int i;
1045
1046	memset (decode_hexdigit, 0xff, 256);
1047		1334
1048	for (i = 0; i < 256; ++i)	1335	for (i = 0; i < 256; ++i)
1049	decode_hexdigit [i] =	1336	decode_hexdigit [i] =
1050	i >= '0' && i <= '9' ? i - '0'	1337	i >= '0' && i <= '9' ? i - '0'
1051	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1338	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1052	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1339	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1053	: -1;	1340	: -1;
1054		1341
1055	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);
1056	}	1347	}
1057		1348
1058	PROTOTYPES: DISABLE	1349	PROTOTYPES: DISABLE
1059		1350
1060	SV new (char dummy)	1351	void new (char *klass)
1061	CODE:	1352	PPCODE:
1062	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);	1353	{
1063	OUTPUT:	1354	SV *pv = NEWSV (0, sizeof (JSON));
1064	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	}
1065		1360
1066	SV ascii (SV self, int enable = 1)	1361	void ascii (JSON *self, int enable = 1)
1067	ALIAS:	1362	ALIAS:
1068	ascii = F_ASCII	1363	ascii = F_ASCII
		1364	latin1 = F_LATIN1
1069	utf8 = F_UTF8	1365	utf8 = F_UTF8
1070	indent = F_INDENT	1366	indent = F_INDENT
1071	canonical = F_CANONICAL	1367	canonical = F_CANONICAL
1072	space_before = F_SPACE_BEFORE	1368	space_before = F_SPACE_BEFORE
1073	space_after = F_SPACE_AFTER	1369	space_after = F_SPACE_AFTER
1074	pretty = F_PRETTY	1370	pretty = F_PRETTY
1075	allow_nonref = F_ALLOW_NONREF	1371	allow_nonref = F_ALLOW_NONREF
1076	shrink = F_SHRINK	1372	shrink = F_SHRINK
		1373	allow_blessed = F_ALLOW_BLESSED
		1374	convert_blessed = F_CONV_BLESSED
1077	CODE:	1375	PPCODE:
1078	{	1376	{
1079	UV *uv = SvJSON (self);
1080	if (enable)	1377	if (enable)
1081	*uv \|= ix;	1378	self->flags \|= ix;
1082	else	1379	else
1083	*uv &= ~ix;	1380	self->flags &= ~ix;
1084		1381
1085	RETVAL = newSVsv (self);	1382	XPUSHs (ST (0));
1086	}	1383	}
1087	OUTPUT:
1088	RETVAL
1089		1384
1090	SV max_depth (SV self, UV max_depth = 0x80000000UL)	1385	void max_depth (JSON *self, UV max_depth = 0x80000000UL)
1091	CODE:	1386	PPCODE:
1092	{	1387	{
1093	UV *uv = SvJSON (self);
1094	UV log2 = 0;	1388	UV log2 = 0;
1095		1389
1096	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;	1390	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1097		1391
1098	while ((1UL << log2) < max_depth)	1392	while ((1UL << log2) < max_depth)
1099	++log2;	1393	++log2;
1100		1394
1101	uv = uv & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);	1395	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1102		1396
1103	RETVAL = newSVsv (self);	1397	XPUSHs (ST (0));
1104	}	1398	}
1105	OUTPUT:
1106	RETVAL
1107		1399
1108	void encode (SV self, SV scalar)	1400	void max_size (JSON *self, UV max_size = 0)
1109	PPCODE:	1401	PPCODE:
1110	XPUSHs (encode_json (scalar, *SvJSON (self)));	1402	{
		1403	UV log2 = 0;
1111		1404
1112	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)
1113	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:
1114	XPUSHs (decode_json (jsonstr, *SvJSON (self)));	1453	XPUSHs (decode_json (jsonstr, self, 0));
		1454
		1455	void decode_prefix (JSON self, SV jsonstr)
		1456	PPCODE:
		1457	{
		1458	UV offset;
		1459	EXTEND (SP, 2);
		1460	PUSHs (decode_json (jsonstr, self, &offset));
		1461	PUSHs (sv_2mortal (newSVuv (offset)));
		1462	}
		1463
		1464	void DESTROY (JSON *self)
		1465	CODE:
		1466	SvREFCNT_dec (self->cb_sk_object);
		1467	SvREFCNT_dec (self->cb_object);
1115		1468
1116	PROTOTYPES: ENABLE	1469	PROTOTYPES: ENABLE
1117		1470
1118	void to_json (SV *scalar)	1471	void to_json (SV *scalar)
1119	ALIAS:
1120	objToJson = 0
1121	PPCODE:	1472	PPCODE:
		1473	{
		1474	JSON json = { F_DEFAULT \| F_UTF8 };
1122	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));	1475	XPUSHs (encode_json (scalar, &json));
		1476	}
1123		1477
1124	void from_json (SV *jsonstr)	1478	void from_json (SV *jsonstr)
1125	ALIAS:
1126	jsonToObj = 0
1127	PPCODE:	1479	PPCODE:
		1480	{
		1481	JSON json = { F_DEFAULT \| F_UTF8 };
1128	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8));	1482	XPUSHs (decode_json (jsonstr, &json, 0));
		1483	}
1129		1484

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Comparing JSON-XS/XS.xs (file contents): Revision 1.27 by root, Mon Apr 9 05:09:57 2007 UTC vs. Revision 1.55 by root, Mon Jul 23 22:57:40 2007 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.27 by root, Mon Apr 9 05:09:57 2007 UTC vs.
Revision 1.55 by root, Mon Jul 23 22:57:40 2007 UTC