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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.24 by root, Tue Apr 3 23:59:04 2007 UTC vs.
Revision 1.52 by root, Mon Jul 2 02:57:11 2007 UTC

…		…
3	#include "XSUB.h"	3	#include "XSUB.h"
4		4
5	#include "assert.h"	5	#include "assert.h"
6	#include "string.h"	6	#include "string.h"
7	#include "stdlib.h"	7	#include "stdlib.h"
		8	#include "stdio.h"
8		9
		10	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
		11	# define snprintf _snprintf // C compilers have this in stdio.h
		12	#endif
		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
9	#define F_ASCII 0x00000001UL	20	#define F_ASCII 0x00000001UL
		21	#define F_LATIN1 0x00000002UL
10	#define F_UTF8 0x00000002UL	22	#define F_UTF8 0x00000004UL
11	#define F_INDENT 0x00000004UL	23	#define F_INDENT 0x00000008UL
12	#define F_CANONICAL 0x00000008UL	24	#define F_CANONICAL 0x00000010UL
13	#define F_SPACE_BEFORE 0x00000010UL	25	#define F_SPACE_BEFORE 0x00000020UL
14	#define F_SPACE_AFTER 0x00000020UL	26	#define F_SPACE_AFTER 0x00000040UL
15	#define F_ALLOW_NONREF 0x00000080UL	27	#define F_ALLOW_NONREF 0x00000100UL
16	#define F_SHRINK 0x00000100UL	28	#define F_SHRINK 0x00000200UL
		29	#define F_ALLOW_BLESSED 0x00000400UL
		30	#define F_CONV_BLESSED 0x00000800UL
17	#define F_MAXDEPTH 0xf8000000UL	31	#define F_MAXDEPTH 0xf8000000UL
18	#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
19		36
20	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))	37	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
21		38	#define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE ))
22	// F_SELFCONVERT? <=> to_json/toJson
23	// F_BLESSED? <=> { $__class__$ => }
24		39
25	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	40	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
26	#define F_DEFAULT (9UL << S_MAXDEPTH)	41	#define F_DEFAULT (9UL << S_MAXDEPTH)
27		42
28	#define INIT_SIZE 32 // initial scalar size to be allocated	43	#define INIT_SIZE 32 // initial scalar size to be allocated
29	#define INDENT_STEP 3 // spaces per indentation level	44	#define INDENT_STEP 3 // spaces per indentation level
30		45
31	#define UTF8_MAX_LEN 11 // for perls UTF-X: max. number of octets per character
32	#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
33		47
34	#define SB do {	48	#define SB do {
35	#define SE } while (0)	49	#define SE } while (0)
36		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
37	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;
38		70
39	/////////////////////////////////////////////////////////////////////////////	71	/////////////////////////////////////////////////////////////////////////////
40	// utility functions	72	// utility functions
41		73
42	static UV *	74	inline void
43	SvJSON (SV *sv)
44	{
45	if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash))
46	croak ("object is not of type JSON::XS");
47
48	return &SvUVX (SvRV (sv));
49	}
50
51	static void
52	shrink (SV *sv)	75	shrink (SV *sv)
53	{	76	{
54	sv_utf8_downgrade (sv, 1);	77	sv_utf8_downgrade (sv, 1);
55	if (SvLEN (sv) > SvCUR (sv) + 1)	78	if (SvLEN (sv) > SvCUR (sv) + 1)
56	{	79	{
…		…
65	// 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
66	// case of an error.	89	// case of an error.
67	// we special-case "safe" characters from U+80 .. U+7FF,	90	// we special-case "safe" characters from U+80 .. U+7FF,
68	// but use the very good perl function to parse anything else.	91	// but use the very good perl function to parse anything else.
69	// note that we never call this function for a ascii codepoints	92	// note that we never call this function for a ascii codepoints
70	static UV	93	inline UV
71	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)	94	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)
72	{	95	{
73	if (s[0] > 0xdf \|\| s[0] < 0xc2)	96	if (expect_false (s[0] > 0xdf \|\| s[0] < 0xc2))
74	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);	97	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
75	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)	98	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)
76	{	99	{
77	*clen = 2;	100	*clen = 2;
78	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);	101	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);
…		…
91	typedef struct	114	typedef struct
92	{	115	{
93	char *cur; // SvPVX (sv) + current output position	116	char *cur; // SvPVX (sv) + current output position
94	char *end; // SvEND (sv)	117	char *end; // SvEND (sv)
95	SV *sv; // result scalar	118	SV *sv; // result scalar
96	U32 flags; // F_*	119	JSON json;
97	U32 indent; // indentation level	120	U32 indent; // indentation level
98	U32 maxdepth; // max. indentation/recursion level	121	U32 maxdepth; // max. indentation/recursion level
99	} enc_t;	122	} enc_t;
100		123
101	static void	124	inline void
102	need (enc_t *enc, STRLEN len)	125	need (enc_t *enc, STRLEN len)
103	{	126	{
104	if (enc->cur + len >= enc->end)	127	if (expect_false (enc->cur + len >= enc->end))
105	{	128	{
106	STRLEN cur = enc->cur - SvPVX (enc->sv);	129	STRLEN cur = enc->cur - SvPVX (enc->sv);
107	SvGROW (enc->sv, cur + len + 1);	130	SvGROW (enc->sv, cur + len + 1);
108	enc->cur = SvPVX (enc->sv) + cur;	131	enc->cur = SvPVX (enc->sv) + cur;
109	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv);	132	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
110	}	133	}
111	}	134	}
112		135
113	static void	136	inline void
114	encode_ch (enc_t *enc, char ch)	137	encode_ch (enc_t *enc, char ch)
115	{	138	{
116	need (enc, 1);	139	need (enc, 1);
117	*enc->cur++ = ch;	140	*enc->cur++ = ch;
118	}	141	}
…		…
126		149
127	while (str < end)	150	while (str < end)
128	{	151	{
129	unsigned char ch = (unsigned char )str;	152	unsigned char ch = (unsigned char )str;
130		153
131	if (ch >= 0x20 && ch < 0x80) // most common case	154	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
132	{	155	{
133	if (ch == '"') // but with slow exceptions	156	if (expect_false (ch == '"')) // but with slow exceptions
134	{	157	{
135	need (enc, len += 1);	158	need (enc, len += 1);
136	*enc->cur++ = '\\';	159	*enc->cur++ = '\\';
137	*enc->cur++ = '"';	160	*enc->cur++ = '"';
138	}	161	}
139	else if (ch == '\\')	162	else if (expect_false (ch == '\\'))
140	{	163	{
141	need (enc, len += 1);	164	need (enc, len += 1);
142	*enc->cur++ = '\\';	165	*enc->cur++ = '\\';
143	*enc->cur++ = '\\';	166	*enc->cur++ = '\\';
144	}	167	}
…		…
162	STRLEN clen;	185	STRLEN clen;
163	UV uch;	186	UV uch;
164		187
165	if (is_utf8)	188	if (is_utf8)
166	{	189	{
167	//uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
168	uch = decode_utf8 (str, end - str, &clen);	190	uch = decode_utf8 (str, end - str, &clen);
169	if (clen == (STRLEN)-1)	191	if (clen == (STRLEN)-1)
170	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);
171	}	193	}
172	else	194	else
…		…
176	}	198	}
177		199
178	if (uch > 0x10FFFFUL)	200	if (uch > 0x10FFFFUL)
179	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);
180		202
181	if (uch < 0x80 \|\| enc->flags & F_ASCII)	203	if (uch < 0x80 \|\| enc->json.flags & F_ASCII \|\| (enc->json.flags & F_LATIN1 && uch > 0xFF))
182	{	204	{
183	if (uch > 0xFFFFUL)	205	if (uch > 0xFFFFUL)
184	{	206	{
185	need (enc, len += 11);	207	need (enc, len += 11);
186	sprintf (enc->cur, "\\u%04x\\u%04x",	208	sprintf (enc->cur, "\\u%04x\\u%04x",
…		…
200	*enc->cur++ = hexdigit [(uch >> 0) & 15];	222	*enc->cur++ = hexdigit [(uch >> 0) & 15];
201	}	223	}
202		224
203	str += clen;	225	str += clen;
204	}	226	}
		227	else if (enc->json.flags & F_LATIN1)
		228	{
		229	*enc->cur++ = uch;
		230	str += clen;
		231	}
205	else if (is_utf8)	232	else if (is_utf8)
206	{	233	{
207	need (enc, len += clen);	234	need (enc, len += clen);
208	do	235	do
209	{	236	{
…		…
211	}	238	}
212	while (--clen);	239	while (--clen);
213	}	240	}
214	else	241	else
215	{	242	{
216	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
217	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);	244	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
218	++str;	245	++str;
219	}	246	}
220	}	247	}
221	}	248	}
…		…
223		250
224	--len;	251	--len;
225	}	252	}
226	}	253	}
227		254
228	static void	255	inline void
229	encode_indent (enc_t *enc)	256	encode_indent (enc_t *enc)
230	{	257	{
231	if (enc->flags & F_INDENT)	258	if (enc->json.flags & F_INDENT)
232	{	259	{
233	int spaces = enc->indent * INDENT_STEP;	260	int spaces = enc->indent * INDENT_STEP;
234		261
235	need (enc, spaces);	262	need (enc, spaces);
236	memset (enc->cur, ' ', spaces);	263	memset (enc->cur, ' ', spaces);
237	enc->cur += spaces;	264	enc->cur += spaces;
238	}	265	}
239	}	266	}
240		267
241	static void	268	inline void
242	encode_space (enc_t *enc)	269	encode_space (enc_t *enc)
243	{	270	{
244	need (enc, 1);	271	need (enc, 1);
245	encode_ch (enc, ' ');	272	encode_ch (enc, ' ');
246	}	273	}
247		274
248	static void	275	inline void
249	encode_nl (enc_t *enc)	276	encode_nl (enc_t *enc)
250	{	277	{
251	if (enc->flags & F_INDENT)	278	if (enc->json.flags & F_INDENT)
252	{	279	{
253	need (enc, 1);	280	need (enc, 1);
254	encode_ch (enc, '\n');	281	encode_ch (enc, '\n');
255	}	282	}
256	}	283	}
257		284
258	static void	285	inline void
259	encode_comma (enc_t *enc)	286	encode_comma (enc_t *enc)
260	{	287	{
261	encode_ch (enc, ',');	288	encode_ch (enc, ',');
262		289
263	if (enc->flags & F_INDENT)	290	if (enc->json.flags & F_INDENT)
264	encode_nl (enc);	291	encode_nl (enc);
265	else if (enc->flags & F_SPACE_AFTER)	292	else if (enc->json.flags & F_SPACE_AFTER)
266	encode_space (enc);	293	encode_space (enc);
267	}	294	}
268		295
269	static void encode_sv (enc_t enc, SV sv);	296	static void encode_sv (enc_t enc, SV sv);
270		297
…		…
313	else	340	else
314	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	341	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
315		342
316	encode_ch (enc, '"');	343	encode_ch (enc, '"');
317		344
318	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);	345	if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc);
319	encode_ch (enc, ':');	346	encode_ch (enc, ':');
320	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);	347	if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc);
321	encode_sv (enc, HeVAL (he));	348	encode_sv (enc, HeVAL (he));
322	}	349	}
323		350
324	// compare hash entries, used when all keys are bytestrings	351	// compare hash entries, used when all keys are bytestrings
325	static int	352	static int
…		…
360	{	387	{
361	// for canonical output we have to sort by keys first	388	// for canonical output we have to sort by keys first
362	// actually, this is mostly due to the stupid so-called	389	// actually, this is mostly due to the stupid so-called
363	// security workaround added somewhere in 5.8.x.	390	// security workaround added somewhere in 5.8.x.
364	// that randomises hash orderings	391	// that randomises hash orderings
365	if (enc->flags & F_CANONICAL)	392	if (enc->json.flags & F_CANONICAL)
366	{	393	{
367	HE he, hes [count]; // if your compiler dies here, you need to enable C99 mode
368	int fast = 1;	394	int fast = 1;
		395	HE *he;
		396	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
		397	HE *hes = _alloca (count sizeof (HE));
		398	#else
		399	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode
		400	#endif
369		401
370	i = 0;	402	i = 0;
371	while ((he = hv_iternext (hv)))	403	while ((he = hv_iternext (hv)))
372	{	404	{
373	hes [i++] = he;	405	hes [i++] = he;
…		…
408		440
409	encode_nl (enc);	441	encode_nl (enc);
410	}	442	}
411	else	443	else
412	{	444	{
413	SV *sv;
414	HE *he = hv_iternext (hv);	445	HE *he = hv_iternext (hv);
415		446
416	for (;;)	447	for (;;)
417	{	448	{
418	encode_indent (enc);	449	encode_indent (enc);
…		…
433		464
434	// encode objects, arrays and special \0=false and \1=true values.	465	// encode objects, arrays and special \0=false and \1=true values.
435	static void	466	static void
436	encode_rv (enc_t enc, SV sv)	467	encode_rv (enc_t enc, SV sv)
437	{	468	{
		469	svtype svt;
		470
438	SvGETMAGIC (sv);	471	SvGETMAGIC (sv);
439
440	svtype svt = SvTYPE (sv);	472	svt = SvTYPE (sv);
441		473
		474	if (expect_false (SvOBJECT (sv)))
		475	{
		476	if (SvSTASH (sv) == json_boolean_stash)
		477	{
		478	if (SvIV (sv))
		479	encode_str (enc, "true", 4, 0);
		480	else
		481	encode_str (enc, "false", 5, 0);
		482	}
		483	else
		484	{
		485	#if 0
		486	if (0 && sv_derived_from (rv, "JSON::Literal"))
		487	{
		488	// not yet
		489	}
		490	#endif
		491	if (enc->json.flags & F_CONV_BLESSED)
		492	{
		493	// we re-bless the reference to get overload and other niceties right
		494	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 1);
		495
		496	if (to_json)
		497	{
		498	dSP; ENTER; SAVETMPS; PUSHMARK (SP);
		499	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
		500
		501	// calling with G_SCALAR ensures that we always get a 1 reutrn value
		502	// check anyways.
		503	PUTBACK;
		504	assert (1 == call_sv ((SV *)GvCV (to_json), G_SCALAR));
		505	SPAGAIN;
		506
		507	encode_sv (enc, POPs);
		508
		509	FREETMPS; LEAVE;
		510	}
		511	else if (enc->json.flags & F_ALLOW_BLESSED)
		512	encode_str (enc, "null", 4, 0);
		513	else
		514	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
		515	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		516	}
		517	else if (enc->json.flags & F_ALLOW_BLESSED)
		518	encode_str (enc, "null", 4, 0);
		519	else
		520	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",
		521	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		522	}
		523	}
442	if (svt == SVt_PVHV)	524	else if (svt == SVt_PVHV)
443	encode_hv (enc, (HV *)sv);	525	encode_hv (enc, (HV *)sv);
444	else if (svt == SVt_PVAV)	526	else if (svt == SVt_PVAV)
445	encode_av (enc, (AV *)sv);	527	encode_av (enc, (AV *)sv);
446	else if (svt < SVt_PVAV)	528	else if (svt < SVt_PVAV)
447	{	529	{
448	if (SvNIOK (sv) && SvIV (sv) == 0)	530	STRLEN len = 0;
		531	char *pv = svt ? SvPV (sv, len) : 0;
		532
		533	if (len == 1 && *pv == '1')
		534	encode_str (enc, "true", 4, 0);
		535	else if (len == 1 && *pv == '0')
449	encode_str (enc, "false", 5, 0);	536	encode_str (enc, "false", 5, 0);
450	else if (SvNIOK (sv) && SvIV (sv) == 1)
451	encode_str (enc, "true", 4, 0);
452	else	537	else
453	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	538	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
454	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	539	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
455	}	540	}
456	else	541	else
…		…
471	encode_str (enc, str, len, SvUTF8 (sv));	556	encode_str (enc, str, len, SvUTF8 (sv));
472	encode_ch (enc, '"');	557	encode_ch (enc, '"');
473	}	558	}
474	else if (SvNOKp (sv))	559	else if (SvNOKp (sv))
475	{	560	{
		561	// trust that perl will do the right thing w.r.t. JSON syntax.
476	need (enc, NV_DIG + 32);	562	need (enc, NV_DIG + 32);
477	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);	563	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);
478	enc->cur += strlen (enc->cur);	564	enc->cur += strlen (enc->cur);
479	}	565	}
480	else if (SvIOKp (sv))	566	else if (SvIOKp (sv))
481	{	567	{
482	need (enc, 64);	568	// we assume we can always read an IV as a UV
		569	if (SvUV (sv) & ~(UV)0x7fff)
		570	{
		571	// large integer, use the (rather slow) snprintf way.
		572	need (enc, sizeof (UV) * 3);
483	enc->cur +=	573	enc->cur +=
484	SvIsUV(sv)	574	SvIsUV(sv)
485	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))	575	? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv))
486	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));	576	: snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv));
		577	}
		578	else
		579	{
		580	// optimise the "small number case"
		581	// code will likely be branchless and use only a single multiplication
		582	I32 i = SvIV (sv);
		583	U32 u;
		584	char digit, nz = 0;
		585
		586	need (enc, 6);
		587
		588	*enc->cur = '-'; enc->cur += i < 0 ? 1 : 0;
		589	u = i < 0 ? -i : i;
		590
		591	// convert to 4.28 fixed-point representation
		592	u = u * ((0xfffffff + 10000) / 10000); // 10**5, 5 fractional digits
		593
		594	// now output digit by digit, each time masking out the integer part
		595	// and multiplying by 5 while moving the decimal point one to the right,
		596	// resulting in a net multiplication by 10.
		597	// we always write the digit to memory but conditionally increment
		598	// the pointer, to ease the usage of conditional move instructions.
		599	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffff) 5;
		600	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffff) 5;
		601	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffff) 5;
		602	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffff) 5;
		603	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'
		604	}
487	}	605	}
488	else if (SvROK (sv))	606	else if (SvROK (sv))
489	encode_rv (enc, SvRV (sv));	607	encode_rv (enc, SvRV (sv));
490	else if (!SvOK (sv))	608	else if (!SvOK (sv))
491	encode_str (enc, "null", 4, 0);	609	encode_str (enc, "null", 4, 0);
…		…
493	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	611	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
494	SvPV_nolen (sv), SvFLAGS (sv));	612	SvPV_nolen (sv), SvFLAGS (sv));
495	}	613	}
496		614
497	static SV *	615	static SV *
498	encode_json (SV *scalar, U32 flags)	616	encode_json (SV scalar, JSON json)
499	{	617	{
		618	enc_t enc;
		619
500	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))	620	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))
501	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	621	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
502		622
503	enc_t enc;	623	enc.json = *json;
504	enc.flags = flags;
505	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	624	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
506	enc.cur = SvPVX (enc.sv);	625	enc.cur = SvPVX (enc.sv);
507	enc.end = SvEND (enc.sv);	626	enc.end = SvEND (enc.sv);
508	enc.indent = 0;	627	enc.indent = 0;
509	enc.maxdepth = DEC_DEPTH (flags);	628	enc.maxdepth = DEC_DEPTH (enc.json.flags);
510		629
511	SvPOK_only (enc.sv);	630	SvPOK_only (enc.sv);
512	encode_sv (&enc, scalar);	631	encode_sv (&enc, scalar);
513		632
		633	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
		634	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
		635
514	if (!(flags & (F_ASCII \| F_UTF8)))	636	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
515	SvUTF8_on (enc.sv);	637	SvUTF8_on (enc.sv);
516		638
517	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
518
519	if (enc.flags & F_SHRINK)	639	if (enc.json.flags & F_SHRINK)
520	shrink (enc.sv);	640	shrink (enc.sv);
521		641
522	return enc.sv;	642	return enc.sv;
523	}	643	}
524		644
…		…
529	typedef struct	649	typedef struct
530	{	650	{
531	char *cur; // current parser pointer	651	char *cur; // current parser pointer
532	char *end; // end of input string	652	char *end; // end of input string
533	const char *err; // parse error, if != 0	653	const char *err; // parse error, if != 0
534	U32 flags; // F_*	654	JSON json;
535	U32 depth; // recursion depth	655	U32 depth; // recursion depth
536	U32 maxdepth; // recursion depth limit	656	U32 maxdepth; // recursion depth limit
537	} dec_t;	657	} dec_t;
538		658
539	static void	659	inline void
540	decode_ws (dec_t *dec)	660	decode_ws (dec_t *dec)
541	{	661	{
542	for (;;)	662	for (;;)
543	{	663	{
544	char ch = *dec->cur;	664	char ch = *dec->cur;
…		…
570	decode_4hex (dec_t *dec)	690	decode_4hex (dec_t *dec)
571	{	691	{
572	signed char d1, d2, d3, d4;	692	signed char d1, d2, d3, d4;
573	unsigned char cur = (unsigned char )dec->cur;	693	unsigned char cur = (unsigned char )dec->cur;
574		694
575	d1 = decode_hexdigit [cur [0]]; if (d1 < 0) ERR ("four hexadecimal digits expected");	695	d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("exactly four hexadecimal digits expected");
576	d2 = decode_hexdigit [cur [1]]; if (d2 < 0) ERR ("four hexadecimal digits expected");	696	d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("exactly four hexadecimal digits expected");
577	d3 = decode_hexdigit [cur [2]]; if (d3 < 0) ERR ("four hexadecimal digits expected");	697	d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("exactly four hexadecimal digits expected");
578	d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected");	698	d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("exactly four hexadecimal digits expected");
579		699
580	dec->cur += 4;	700	dec->cur += 4;
581		701
582	return ((UV)d1) << 12	702	return ((UV)d1) << 12
583	\| ((UV)d2) << 8	703	\| ((UV)d2) << 8
…		…
591	static SV *	711	static SV *
592	decode_str (dec_t *dec)	712	decode_str (dec_t *dec)
593	{	713	{
594	SV *sv = 0;	714	SV *sv = 0;
595	int utf8 = 0;	715	int utf8 = 0;
		716	char *dec_cur = dec->cur;
596		717
597	do	718	do
598	{	719	{
599	char buf [SHORT_STRING_LEN + UTF8_MAX_LEN];	720	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];
600	char *cur = buf;	721	char *cur = buf;
601		722
602	do	723	do
603	{	724	{
604	unsigned char ch = (unsigned char )dec->cur++;	725	unsigned char ch = (unsigned char )dec_cur++;
605		726
606	if (ch == '"')	727	if (expect_false (ch == '"'))
607	{	728	{
608	--dec->cur;	729	--dec_cur;
609	break;	730	break;
610	}	731	}
611	else if (ch == '\\')	732	else if (expect_false (ch == '\\'))
612	{	733	{
613	switch (*dec->cur)	734	switch (*dec_cur)
614	{	735	{
615	case '\\':	736	case '\\':
616	case '/':	737	case '/':
617	case '"': cur++ = dec->cur++; break;	738	case '"': cur++ = dec_cur++; break;
618		739
619	case 'b': ++dec->cur; *cur++ = '\010'; break;	740	case 'b': ++dec_cur; *cur++ = '\010'; break;
620	case 't': ++dec->cur; *cur++ = '\011'; break;	741	case 't': ++dec_cur; *cur++ = '\011'; break;
621	case 'n': ++dec->cur; *cur++ = '\012'; break;	742	case 'n': ++dec_cur; *cur++ = '\012'; break;
622	case 'f': ++dec->cur; *cur++ = '\014'; break;	743	case 'f': ++dec_cur; *cur++ = '\014'; break;
623	case 'r': ++dec->cur; *cur++ = '\015'; break;	744	case 'r': ++dec_cur; *cur++ = '\015'; break;
624		745
625	case 'u':	746	case 'u':
626	{	747	{
627	UV lo, hi;	748	UV lo, hi;
628	++dec->cur;	749	++dec_cur;
629		750
		751	dec->cur = dec_cur;
630	hi = decode_4hex (dec);	752	hi = decode_4hex (dec);
		753	dec_cur = dec->cur;
631	if (hi == (UV)-1)	754	if (hi == (UV)-1)
632	goto fail;	755	goto fail;
633		756
634	// possibly a surrogate pair	757	// possibly a surrogate pair
635	if (hi >= 0xd800)	758	if (hi >= 0xd800)
636	if (hi < 0xdc00)	759	if (hi < 0xdc00)
637	{	760	{
638	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')	761	if (dec_cur [0] != '\\' \|\| dec_cur [1] != 'u')
639	ERR ("missing low surrogate character in surrogate pair");	762	ERR ("missing low surrogate character in surrogate pair");
640		763
641	dec->cur += 2;	764	dec_cur += 2;
642		765
		766	dec->cur = dec_cur;
643	lo = decode_4hex (dec);	767	lo = decode_4hex (dec);
		768	dec_cur = dec->cur;
644	if (lo == (UV)-1)	769	if (lo == (UV)-1)
645	goto fail;	770	goto fail;
646		771
647	if (lo < 0xdc00 \|\| lo >= 0xe000)	772	if (lo < 0xdc00 \|\| lo >= 0xe000)
648	ERR ("surrogate pair expected");	773	ERR ("surrogate pair expected");
…		…
662	*cur++ = hi;	787	*cur++ = hi;
663	}	788	}
664	break;	789	break;
665		790
666	default:	791	default:
667	--dec->cur;	792	--dec_cur;
668	ERR ("illegal backslash escape sequence in string");	793	ERR ("illegal backslash escape sequence in string");
669	}	794	}
670	}	795	}
671	else if (ch >= 0x20 && ch <= 0x7f)	796	else if (expect_true (ch >= 0x20 && ch <= 0x7f))
672	*cur++ = ch;	797	*cur++ = ch;
673	else if (ch >= 0x80)	798	else if (ch >= 0x80)
674	{	799	{
675	--dec->cur;
676
677	STRLEN clen;	800	STRLEN clen;
		801	UV uch;
		802
		803	--dec_cur;
		804
678	UV uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen);	805	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
679	if (clen == (STRLEN)-1)	806	if (clen == (STRLEN)-1)
680	ERR ("malformed UTF-8 character in JSON string");	807	ERR ("malformed UTF-8 character in JSON string");
681		808
682	do	809	do
683	cur++ = dec->cur++;	810	cur++ = dec_cur++;
684	while (--clen);	811	while (--clen);
685		812
686	utf8 = 1;	813	utf8 = 1;
687	}	814	}
688	else	815	else
689	{	816	{
690	--dec->cur;	817	--dec_cur;
691		818
692	if (!ch)	819	if (!ch)
693	ERR ("unexpected end of string while parsing JSON string");	820	ERR ("unexpected end of string while parsing JSON string");
694	else	821	else
695	ERR ("invalid character encountered while parsing JSON string");	822	ERR ("invalid character encountered while parsing JSON string");
696	}	823	}
697	}	824	}
698	while (cur < buf + SHORT_STRING_LEN);	825	while (cur < buf + SHORT_STRING_LEN);
699		826
		827	{
700	STRLEN len = cur - buf;	828	STRLEN len = cur - buf;
701		829
702	if (sv)	830	if (sv)
703	{	831	{
704	SvGROW (sv, SvCUR (sv) + len + 1);	832	SvGROW (sv, SvCUR (sv) + len + 1);
705	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	833	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
706	SvCUR_set (sv, SvCUR (sv) + len);	834	SvCUR_set (sv, SvCUR (sv) + len);
707	}	835	}
708	else	836	else
709	sv = newSVpvn (buf, len);	837	sv = newSVpvn (buf, len);
710	}	838	}
		839	}
711	while (*dec->cur != '"');	840	while (*dec_cur != '"');
712		841
713	++dec->cur;	842	++dec_cur;
714		843
715	if (sv)	844	if (sv)
716	{	845	{
717	SvPOK_only (sv);	846	SvPOK_only (sv);
718	*SvEND (sv) = 0;	847	*SvEND (sv) = 0;
…		…
721	SvUTF8_on (sv);	850	SvUTF8_on (sv);
722	}	851	}
723	else	852	else
724	sv = newSVpvn ("", 0);	853	sv = newSVpvn ("", 0);
725		854
		855	dec->cur = dec_cur;
726	return sv;	856	return sv;
727		857
728	fail:	858	fail:
		859	dec->cur = dec_cur;
729	return 0;	860	return 0;
730	}	861	}
731		862
732	static SV *	863	static SV *
733	decode_num (dec_t *dec)	864	decode_num (dec_t *dec)
…		…
791	is_nv = 1;	922	is_nv = 1;
792	}	923	}
793		924
794	if (!is_nv)	925	if (!is_nv)
795	{	926	{
796	UV uv;	927	// special case the rather common 1..4-digit-int case, assumes 32 bit ints or so
797	int numtype = grok_number (start, dec->cur - start, &uv);	928	if (*start == '-')
798	if (numtype & IS_NUMBER_IN_UV)	929	switch (dec->cur - start)
799	if (numtype & IS_NUMBER_NEG)
800	{	930	{
801	if (uv < (UV)IV_MIN)	931	case 2: return newSViv (-( start [1] - '0' * 1));
802	return newSViv (-(IV)uv);	932	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));
		933	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
		934	case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
803	}	935	}
		936	else
		937	switch (dec->cur - start)
		938	{
		939	case 1: return newSViv ( start [0] - '0' * 1);
		940	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
		941	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
		942	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
		943	}
		944
		945	{
		946	UV uv;
		947	int numtype = grok_number (start, dec->cur - start, &uv);
		948	if (numtype & IS_NUMBER_IN_UV)
		949	if (numtype & IS_NUMBER_NEG)
		950	{
		951	if (uv < (UV)IV_MIN)
		952	return newSViv (-(IV)uv);
		953	}
804	else	954	else
805	return newSVuv (uv);	955	return newSVuv (uv);
		956
		957	// here would likely be the place for bigint support
806	}	958	}
		959	}
807		960
		961	// if we ever support bigint or bigfloat, this is the place for bigfloat
808	return newSVnv (Atof (start));	962	return newSVnv (Atof (start));
809		963
810	fail:	964	fail:
811	return 0;	965	return 0;
812	}	966	}
…		…
856	}	1010	}
857		1011
858	static SV *	1012	static SV *
859	decode_hv (dec_t *dec)	1013	decode_hv (dec_t *dec)
860	{	1014	{
		1015	SV *sv;
861	HV *hv = newHV ();	1016	HV *hv = newHV ();
862		1017
863	DEC_INC_DEPTH;	1018	DEC_INC_DEPTH;
864	decode_ws (dec);	1019	decode_ws (dec);
865		1020
866	if (*dec->cur == '}')	1021	if (*dec->cur == '}')
867	++dec->cur;	1022	++dec->cur;
868	else	1023	else
869	for (;;)	1024	for (;;)
870	{	1025	{
871	SV key, value;
872
873	decode_ws (dec); EXPECT_CH ('"');	1026	decode_ws (dec); EXPECT_CH ('"');
874		1027
875	key = decode_str (dec);	1028	// heuristic: assume that
876	if (!key)	1029	// a) decode_str + hv_store_ent are abysmally slow.
877	goto fail;	1030	// b) most hash keys are short, simple ascii text.
		1031	// => try to "fast-match" such strings to avoid
		1032	// the overhead of decode_str + hv_store_ent.
		1033	{
		1034	SV *value;
		1035	char *p = dec->cur;
		1036	char *e = p + 24; // only try up to 24 bytes
878		1037
879	decode_ws (dec); EXPECT_CH (':');	1038	for (;;)
880
881	value = decode_sv (dec);
882	if (!value)
883	{	1039	{
		1040	// the >= 0x80 is true on most architectures
		1041	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')
		1042	{
		1043	// slow path, back up and use decode_str
		1044	SV *key = decode_str (dec);
		1045	if (!key)
		1046	goto fail;
		1047
		1048	decode_ws (dec); EXPECT_CH (':');
		1049
		1050	value = decode_sv (dec);
		1051	if (!value)
		1052	{
		1053	SvREFCNT_dec (key);
		1054	goto fail;
		1055	}
		1056
		1057	hv_store_ent (hv, key, value, 0);
884	SvREFCNT_dec (key);	1058	SvREFCNT_dec (key);
		1059
		1060	break;
		1061	}
		1062	else if (*p == '"')
		1063	{
		1064	// fast path, got a simple key
		1065	char *key = dec->cur;
		1066	int len = p - key;
		1067	dec->cur = p + 1;
		1068
		1069	decode_ws (dec); EXPECT_CH (':');
		1070
		1071	value = decode_sv (dec);
		1072	if (!value)
885	goto fail;	1073	goto fail;
		1074
		1075	hv_store (hv, key, len, value, 0);
		1076
		1077	break;
		1078	}
		1079
		1080	++p;
886	}	1081	}
887		1082	}
888	hv_store_ent (hv, key, value, 0);
889	SvREFCNT_dec (key);
890		1083
891	decode_ws (dec);	1084	decode_ws (dec);
892		1085
893	if (*dec->cur == '}')	1086	if (*dec->cur == '}')
894	{	1087	{
…		…
901		1094
902	++dec->cur;	1095	++dec->cur;
903	}	1096	}
904		1097
905	DEC_DEC_DEPTH;	1098	DEC_DEC_DEPTH;
906	return newRV_noinc ((SV *)hv);	1099	sv = newRV_noinc ((SV *)hv);
		1100
		1101	// check filter callbacks
		1102	if (dec->json.flags & F_HOOK)
		1103	{
		1104	if (dec->json.cb_sk_object && HvKEYS (hv) == 1)
		1105	{
		1106	HE cb, he;
		1107
		1108	hv_iterinit (hv);
		1109	he = hv_iternext (hv);
		1110	hv_iterinit (hv);
		1111
		1112	// the next line creates a mortal sv each time its called.
		1113	// might want to optimise this for common cases.
		1114	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
		1115
		1116	if (cb)
		1117	{
		1118	int count;
		1119	ENTER; SAVETMPS;
		1120
		1121	dSP; PUSHMARK (SP);
		1122	XPUSHs (HeVAL (he));
		1123
		1124	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
		1125
		1126	if (count == 1)
		1127	{
		1128	sv = newSVsv (POPs);
		1129	FREETMPS; LEAVE;
		1130	return sv;
		1131	}
		1132
		1133	FREETMPS; LEAVE;
		1134	}
		1135	}
		1136
		1137	if (dec->json.cb_object)
		1138	{
		1139	int count;
		1140	ENTER; SAVETMPS;
		1141
		1142	dSP; ENTER; SAVETMPS; PUSHMARK (SP);
		1143	XPUSHs (sv_2mortal (sv));
		1144
		1145	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
		1146
		1147	if (count == 1)
		1148	{
		1149	sv = newSVsv (POPs);
		1150	FREETMPS; LEAVE;
		1151	return sv;
		1152	}
		1153
		1154	SvREFCNT_inc (sv);
		1155	FREETMPS; LEAVE;
		1156	}
		1157	}
		1158
		1159	return sv;
907		1160
908	fail:	1161	fail:
909	SvREFCNT_dec (hv);	1162	SvREFCNT_dec (hv);
910	DEC_DEC_DEPTH;	1163	DEC_DEC_DEPTH;
911	return 0;	1164	return 0;
…		…
913		1166
914	static SV *	1167	static SV *
915	decode_sv (dec_t *dec)	1168	decode_sv (dec_t *dec)
916	{	1169	{
917	decode_ws (dec);	1170	decode_ws (dec);
		1171
		1172	// the beauty of JSON: you need exactly one character lookahead
		1173	// to parse anything.
918	switch (*dec->cur)	1174	switch (*dec->cur)
919	{	1175	{
920	case '"': ++dec->cur; return decode_str (dec);	1176	case '"': ++dec->cur; return decode_str (dec);
921	case '[': ++dec->cur; return decode_av (dec);	1177	case '[': ++dec->cur; return decode_av (dec);
922	case '{': ++dec->cur; return decode_hv (dec);	1178	case '{': ++dec->cur; return decode_hv (dec);
…		…
928		1184
929	case 't':	1185	case 't':
930	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1186	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
931	{	1187	{
932	dec->cur += 4;	1188	dec->cur += 4;
933	return newSViv (1);	1189	return SvREFCNT_inc (json_true);
934	}	1190	}
935	else	1191	else
936	ERR ("'true' expected");	1192	ERR ("'true' expected");
937		1193
938	break;	1194	break;
939		1195
940	case 'f':	1196	case 'f':
941	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1197	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
942	{	1198	{
943	dec->cur += 5;	1199	dec->cur += 5;
944	return newSViv (0);	1200	return SvREFCNT_inc (json_false);
945	}	1201	}
946	else	1202	else
947	ERR ("'false' expected");	1203	ERR ("'false' expected");
948		1204
949	break;	1205	break;
…		…
967	fail:	1223	fail:
968	return 0;	1224	return 0;
969	}	1225	}
970		1226
971	static SV *	1227	static SV *
972	decode_json (SV *string, U32 flags)	1228	decode_json (SV string, JSON json, UV *offset_return)
973	{	1229	{
		1230	dec_t dec;
		1231	UV offset;
974	SV *sv;	1232	SV *sv;
975		1233
		1234	SvGETMAGIC (string);
976	SvUPGRADE (string, SVt_PV);	1235	SvUPGRADE (string, SVt_PV);
977		1236
		1237	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))
		1238	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		1239	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));
		1240
978	if (flags & F_UTF8)	1241	if (json->flags & F_UTF8)
979	sv_utf8_downgrade (string, 0);	1242	sv_utf8_downgrade (string, 0);
980	else	1243	else
981	sv_utf8_upgrade (string);	1244	sv_utf8_upgrade (string);
982		1245
983	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1246	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
984		1247
985	dec_t dec;	1248	dec.json = *json;
986	dec.flags = flags;
987	dec.cur = SvPVX (string);	1249	dec.cur = SvPVX (string);
988	dec.end = SvEND (string);	1250	dec.end = SvEND (string);
989	dec.err = 0;	1251	dec.err = 0;
990	dec.depth = 0;	1252	dec.depth = 0;
991	dec.maxdepth = DEC_DEPTH (dec.flags);	1253	dec.maxdepth = DEC_DEPTH (dec.json.flags);
992		1254
		1255	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
		1256	dec.json.flags \|= F_HOOK;
		1257
993	*dec.end = 0; // this should basically be a nop, too, but make sure its there	1258	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
994	sv = decode_sv (&dec);	1259	sv = decode_sv (&dec);
995		1260
		1261	if (!(offset_return \|\| !sv))
		1262	{
		1263	// check for trailing garbage
		1264	decode_ws (&dec);
		1265
		1266	if (*dec.cur)
		1267	{
		1268	dec.err = "garbage after JSON object";
		1269	SvREFCNT_dec (sv);
		1270	sv = 0;
		1271	}
		1272	}
		1273
		1274	if (offset_return \|\| !sv)
		1275	{
		1276	offset = dec.json.flags & F_UTF8
		1277	? dec.cur - SvPVX (string)
		1278	: utf8_distance (dec.cur, SvPVX (string));
		1279
		1280	if (offset_return)
		1281	*offset_return = offset;
		1282	}
		1283
996	if (!sv)	1284	if (!sv)
997	{	1285	{
998	IV offset = dec.flags & F_UTF8
999	? dec.cur - SvPVX (string)
1000	: utf8_distance (dec.cur, SvPVX (string));
1001	SV *uni = sv_newmortal ();	1286	SV *uni = sv_newmortal ();
1002		1287
1003	// horrible hack to silence warning inside pv_uni_display	1288	// horrible hack to silence warning inside pv_uni_display
1004	COP cop = *PL_curcop;	1289	COP cop = *PL_curcop;
1005	cop.cop_warnings = pWARN_NONE;	1290	cop.cop_warnings = pWARN_NONE;
…		…
1015	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1300	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1016	}	1301	}
1017		1302
1018	sv = sv_2mortal (sv);	1303	sv = sv_2mortal (sv);
1019		1304
1020	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))	1305	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))
1021	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1306	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1022		1307
1023	return sv;	1308	return sv;
1024	}	1309	}
1025		1310
…		…
1029	MODULE = JSON::XS PACKAGE = JSON::XS	1314	MODULE = JSON::XS PACKAGE = JSON::XS
1030		1315
1031	BOOT:	1316	BOOT:
1032	{	1317	{
1033	int i;	1318	int i;
1034
1035	memset (decode_hexdigit, 0xff, 256);
1036		1319
1037	for (i = 0; i < 256; ++i)	1320	for (i = 0; i < 256; ++i)
1038	decode_hexdigit [i] =	1321	decode_hexdigit [i] =
1039	i >= '0' && i <= '9' ? i - '0'	1322	i >= '0' && i <= '9' ? i - '0'
1040	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1323	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1041	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1324	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1042	: -1;	1325	: -1;
1043		1326
1044	json_stash = gv_stashpv ("JSON::XS", 1);	1327	json_stash = gv_stashpv ("JSON::XS" , 1);
		1328	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);
		1329
		1330	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );
		1331	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);
1045	}	1332	}
1046		1333
1047	PROTOTYPES: DISABLE	1334	PROTOTYPES: DISABLE
1048		1335
1049	SV new (char dummy)	1336	void new (char *klass)
1050	CODE:	1337	PPCODE:
1051	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);	1338	{
1052	OUTPUT:	1339	SV *pv = NEWSV (0, sizeof (JSON));
1053	RETVAL	1340	SvPOK_only (pv);
		1341	Zero (SvPVX (pv), 1, JSON);
		1342	((JSON *)SvPVX (pv))->flags = F_DEFAULT;
		1343	XPUSHs (sv_2mortal (sv_bless (newRV_noinc (pv), json_stash)));
		1344	}
1054		1345
1055	SV ascii (SV self, int enable = 1)	1346	void ascii (JSON *self, int enable = 1)
1056	ALIAS:	1347	ALIAS:
1057	ascii = F_ASCII	1348	ascii = F_ASCII
		1349	latin1 = F_LATIN1
1058	utf8 = F_UTF8	1350	utf8 = F_UTF8
1059	indent = F_INDENT	1351	indent = F_INDENT
1060	canonical = F_CANONICAL	1352	canonical = F_CANONICAL
1061	space_before = F_SPACE_BEFORE	1353	space_before = F_SPACE_BEFORE
1062	space_after = F_SPACE_AFTER	1354	space_after = F_SPACE_AFTER
1063	pretty = F_PRETTY	1355	pretty = F_PRETTY
1064	allow_nonref = F_ALLOW_NONREF	1356	allow_nonref = F_ALLOW_NONREF
1065	shrink = F_SHRINK	1357	shrink = F_SHRINK
		1358	allow_blessed = F_ALLOW_BLESSED
		1359	convert_blessed = F_CONV_BLESSED
1066	CODE:	1360	PPCODE:
1067	{	1361	{
1068	UV *uv = SvJSON (self);
1069	if (enable)	1362	if (enable)
1070	*uv \|= ix;	1363	self->flags \|= ix;
1071	else	1364	else
1072	*uv &= ~ix;	1365	self->flags &= ~ix;
1073		1366
1074	RETVAL = newSVsv (self);	1367	XPUSHs (ST (0));
1075	}	1368	}
1076	OUTPUT:
1077	RETVAL
1078		1369
1079	SV max_depth (SV self, int max_depth = 0x80000000UL)	1370	void max_depth (JSON *self, UV max_depth = 0x80000000UL)
1080	CODE:	1371	PPCODE:
1081	{	1372	{
1082	UV *uv = SvJSON (self);
1083	UV log2 = 0;	1373	UV log2 = 0;
1084		1374
1085	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;	1375	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1086		1376
1087	while ((1UL << log2) < max_depth)	1377	while ((1UL << log2) < max_depth)
1088	++log2;	1378	++log2;
1089		1379
1090	uv = uv & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);	1380	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1091		1381
1092	RETVAL = newSVsv (self);	1382	XPUSHs (ST (0));
1093	}	1383	}
1094	OUTPUT:
1095	RETVAL
1096		1384
1097	void encode (SV self, SV scalar)	1385	void max_size (JSON *self, UV max_size = 0)
1098	PPCODE:	1386	PPCODE:
1099	XPUSHs (encode_json (scalar, *SvJSON (self)));	1387	{
		1388	UV log2 = 0;
1100		1389
1101	void decode (SV self, SV jsonstr)	1390	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
		1391	if (max_size == 1) max_size = 2;
		1392
		1393	while ((1UL << log2) < max_size)
		1394	++log2;
		1395
		1396	self->flags = self->flags & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
		1397
		1398	XPUSHs (ST (0));
		1399	}
		1400
		1401	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1102	PPCODE:	1402	PPCODE:
		1403	{
		1404	SvREFCNT_dec (self->cb_object);
		1405	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;
		1406
		1407	XPUSHs (ST (0));
		1408	}
		1409
		1410	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
		1411	PPCODE:
		1412	{
		1413	if (!self->cb_sk_object)
		1414	self->cb_sk_object = newHV ();
		1415
		1416	if (SvOK (cb))
		1417	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
		1418	else
		1419	{
		1420	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
		1421
		1422	if (!HvKEYS (self->cb_sk_object))
		1423	{
		1424	SvREFCNT_dec (self->cb_sk_object);
		1425	self->cb_sk_object = 0;
		1426	}
		1427	}
		1428
		1429	XPUSHs (ST (0));
		1430	}
		1431
		1432	void encode (JSON self, SV scalar)
		1433	PPCODE:
		1434	XPUSHs (encode_json (scalar, self));
		1435
		1436	void decode (JSON self, SV jsonstr)
		1437	PPCODE:
1103	XPUSHs (decode_json (jsonstr, *SvJSON (self)));	1438	XPUSHs (decode_json (jsonstr, self, 0));
		1439
		1440	void decode_prefix (JSON self, SV jsonstr)
		1441	PPCODE:
		1442	{
		1443	UV offset;
		1444	EXTEND (SP, 2);
		1445	PUSHs (decode_json (jsonstr, self, &offset));
		1446	PUSHs (sv_2mortal (newSVuv (offset)));
		1447	}
		1448
		1449	void DESTROY (JSON *self)
		1450	CODE:
		1451	SvREFCNT_dec (self->cb_sk_object);
		1452	SvREFCNT_dec (self->cb_object);
1104		1453
1105	PROTOTYPES: ENABLE	1454	PROTOTYPES: ENABLE
1106		1455
1107	void to_json (SV *scalar)	1456	void to_json (SV *scalar)
1108	ALIAS:
1109	objToJson = 0
1110	PPCODE:	1457	PPCODE:
		1458	{
		1459	JSON json = { F_DEFAULT \| F_UTF8 };
1111	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));	1460	XPUSHs (encode_json (scalar, &json));
		1461	}
1112		1462
1113	void from_json (SV *jsonstr)	1463	void from_json (SV *jsonstr)
1114	ALIAS:
1115	jsonToObj = 0
1116	PPCODE:	1464	PPCODE:
		1465	{
		1466	JSON json = { F_DEFAULT \| F_UTF8 };
1117	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8));	1467	XPUSHs (decode_json (jsonstr, &json, 0));
		1468	}
1118		1469

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Comparing JSON-XS/XS.xs (file contents): Revision 1.24 by root, Tue Apr 3 23:59:04 2007 UTC vs. Revision 1.52 by root, Mon Jul 2 02:57:11 2007 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.24 by root, Tue Apr 3 23:59:04 2007 UTC vs.
Revision 1.52 by root, Mon Jul 2 02:57:11 2007 UTC