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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.1 by root, Thu Mar 22 16:40:16 2007 UTC vs.
Revision 1.32 by root, Wed May 9 16:41:12 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
9	#define F_ASCII 0x00000001	14	#define F_ASCII 0x00000001UL
		15	#define F_LATIN1 0x00000002UL
10	#define F_UTF8 0x00000002	16	#define F_UTF8 0x00000004UL
11	#define F_INDENT 0x00000004	17	#define F_INDENT 0x00000008UL
12	#define F_CANONICAL 0x00000008	18	#define F_CANONICAL 0x00000010UL
13	#define F_SPACE_BEFORE 0x00000010	19	#define F_SPACE_BEFORE 0x00000020UL
14	#define F_SPACE_AFTER 0x00000020	20	#define F_SPACE_AFTER 0x00000040UL
		21	#define F_ALLOW_NONREF 0x00000100UL
15	#define F_JSON_RPC 0x00000040	22	#define F_SHRINK 0x00000200UL
		23	#define F_MAXDEPTH 0xf8000000UL
		24	#define S_MAXDEPTH 27
16		25
17	#define F_DEFAULT 0	26	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
		27
		28	// F_SELFCONVERT? <=> to_json/toJson
		29	// F_BLESSED? <=> { $__class__$ => }
		30
		31	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
		32	#define F_DEFAULT (9UL << S_MAXDEPTH)
18		33
19	#define INIT_SIZE 32 // initial scalar size to be allocated	34	#define INIT_SIZE 32 // initial scalar size to be allocated
		35	#define INDENT_STEP 3 // spaces per indentation level
		36
		37	#define SHORT_STRING_LEN 512 // special-case strings of up to this size
20		38
21	#define SB do {	39	#define SB do {
22	#define SE } while (0)	40	#define SE } while (0)
23		41
24	static HV *json_stash;	42	static HV *json_stash; // JSON::XS::
		43
		44	/////////////////////////////////////////////////////////////////////////////
		45	// utility functions
		46
		47	static UV *
		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)
		58	{
		59	sv_utf8_downgrade (sv, 1);
		60	if (SvLEN (sv) > SvCUR (sv) + 1)
		61	{
		62	#ifdef SvPV_shrink_to_cur
		63	SvPV_shrink_to_cur (sv);
		64	#elif defined (SvPV_renew)
		65	SvPV_renew (sv, SvCUR (sv) + 1);
		66	#endif
		67	}
		68	}
		69
		70	// decode an utf-8 character and return it, or (UV)-1 in
		71	// case of an error.
		72	// we special-case "safe" characters from U+80 .. U+7FF,
		73	// but use the very good perl function to parse anything else.
		74	// note that we never call this function for a ascii codepoints
		75	static UV
		76	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)
		77	{
		78	if (s[0] > 0xdf \|\| s[0] < 0xc2)
		79	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
		80	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)
		81	{
		82	*clen = 2;
		83	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);
		84	}
		85	else
		86	{
		87	*clen = (STRLEN)-1;
		88	return (UV)-1;
		89	}
		90	}
		91
		92	/////////////////////////////////////////////////////////////////////////////
		93	// encoder
25		94
26	// structure used for encoding JSON	95	// structure used for encoding JSON
27	typedef struct	96	typedef struct
28	{	97	{
29	char *cur;	98	char *cur; // SvPVX (sv) + current output position
30	STRLEN len; // SvLEN (sv)
31	char *end; // SvEND (sv)	99	char *end; // SvEND (sv)
32	SV *sv;	100	SV *sv; // result scalar
33	UV flags;	101	U32 flags; // F_*
34	int max_recurse;	102	U32 indent; // indentation level
35	int indent;	103	U32 maxdepth; // max. indentation/recursion level
36	} enc_t;	104	} enc_t;
37
38	// structure used for decoding JSON
39	typedef struct
40	{
41	char *cur;
42	char *end;
43	char *err;
44	UV flags;
45	} dec_t;
46
47	static UV *
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	/////////////////////////////////////////////////////////////////////////////
57		105
58	static void	106	static void
59	need (enc_t *enc, STRLEN len)	107	need (enc_t *enc, STRLEN len)
60	{	108	{
61	if (enc->cur + len >= enc->end)	109	if (enc->cur + len >= enc->end)
62	{	110	{
63	STRLEN cur = enc->cur - SvPVX (enc->sv);	111	STRLEN cur = enc->cur - SvPVX (enc->sv);
64	SvGROW (enc->sv, cur + len + 1);	112	SvGROW (enc->sv, cur + len + 1);
65	enc->cur = SvPVX (enc->sv) + cur;	113	enc->cur = SvPVX (enc->sv) + cur;
66	enc->end = SvEND (enc->sv);	114	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
67	}	115	}
68	}	116	}
69		117
70	static void	118	static void
71	encode_ch (enc_t *enc, char ch)	119	encode_ch (enc_t *enc, char ch)
…		…
77	static void	125	static void
78	encode_str (enc_t enc, char str, STRLEN len, int is_utf8)	126	encode_str (enc_t enc, char str, STRLEN len, int is_utf8)
79	{	127	{
80	char *end = str + len;	128	char *end = str + len;
81		129
		130	need (enc, len);
		131
82	while (str < end)	132	while (str < end)
83	{	133	{
84	unsigned char ch = (unsigned char )str;	134	unsigned char ch = (unsigned char )str;
		135
85	if (ch >= 0x20 && ch < 0x80) // most common case	136	if (ch >= 0x20 && ch < 0x80) // most common case
86	{	137	{
		138	if (ch == '"') // but with slow exceptions
		139	{
		140	need (enc, len += 1);
		141	*enc->cur++ = '\\';
		142	*enc->cur++ = '"';
		143	}
		144	else if (ch == '\\')
		145	{
		146	need (enc, len += 1);
		147	*enc->cur++ = '\\';
		148	*enc->cur++ = '\\';
		149	}
		150	else
87	*enc->cur++ = ch;	151	*enc->cur++ = ch;
		152
88	str++;	153	++str;
89	}	154	}
90	else	155	else
91	{	156	{
92	STRLEN clen;	157	switch (ch)
93	UV uch;
94
95	if (is_utf8)
96	{	158	{
97	uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);	159	case '\010': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;
98	if (clen < 0)	160	case '\011': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 't'; ++str; break;
99	croak ("malformed UTF-8 character in string, cannot convert to JSON");	161	case '\012': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;
100	}	162	case '\014': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;
101	else	163	case '\015': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;
102	{
103	uch = ch;
104	clen = 1;
105	}
106		164
107	need (enc, len += 6);	165	default:
108
109	if (uch < 0xa0 \|\| enc->flags & F_ASCII)
110	{
111	if (uch > 0xFFFFUL)
112	{	166	{
		167	STRLEN clen;
		168	UV uch;
		169
		170	if (is_utf8)
		171	{
		172	//uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
		173	uch = decode_utf8 (str, end - str, &clen);
		174	if (clen == (STRLEN)-1)
		175	croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);
		176	}
		177	else
		178	{
		179	uch = ch;
113	len += 6;	180	clen = 1;
		181	}
		182
		183	if (uch > 0x10FFFFUL)
		184	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
		185
		186	if (uch < 0x80 \|\| enc->flags & F_ASCII \|\| (enc->flags & F_LATIN1 && uch > 0xFF))
		187	{
		188	if (uch > 0xFFFFUL)
		189	{
114	need (enc, len += 6);	190	need (enc, len += 11);
115	sprintf (enc->cur, "\\u%04x\\u%04x",	191	sprintf (enc->cur, "\\u%04x\\u%04x",
116	(uch - 0x10000) / 0x400 + 0xD800,	192	(int)((uch - 0x10000) / 0x400 + 0xD800),
117	(uch - 0x10000) % 0x400 + 0xDC00);	193	(int)((uch - 0x10000) % 0x400 + 0xDC00));
118	enc->cur += 12;	194	enc->cur += 12;
		195	}
		196	else
		197	{
		198	static char hexdigit [16] = "0123456789abcdef";
		199	need (enc, len += 5);
		200	*enc->cur++ = '\\';
		201	*enc->cur++ = 'u';
		202	*enc->cur++ = hexdigit [ uch >> 12 ];
		203	*enc->cur++ = hexdigit [(uch >> 8) & 15];
		204	*enc->cur++ = hexdigit [(uch >> 4) & 15];
		205	*enc->cur++ = hexdigit [(uch >> 0) & 15];
		206	}
		207
		208	str += clen;
119	}	209	}
		210	else if (enc->flags & F_LATIN1)
		211	{
		212	*enc->cur++ = uch;
		213	str += clen;
		214	}
		215	else if (is_utf8)
		216	{
		217	need (enc, len += clen);
		218	do
		219	{
		220	enc->cur++ = str++;
		221	}
		222	while (--clen);
		223	}
120	else	224	else
121	{	225	{
122	sprintf (enc->cur, "\\u%04x", uch);	226	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed
123	enc->cur += 6;	227	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
		228	++str;
		229	}
124	}	230	}
125	}	231	}
126	else if (is_utf8)
127	{
128	memcpy (enc->cur, str, clen);
129	enc->cur += clen;
130	}
131	else
132	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
133
134	str += clen;
135	}	232	}
136		233
137	--len;	234	--len;
138	}	235	}
139	}	236	}
140		237
141	#define INDENT SB \	238	static void
		239	encode_indent (enc_t *enc)
		240	{
142	if (enc->flags & F_INDENT) \	241	if (enc->flags & F_INDENT)
143	{ \	242	{
144	int i_; \	243	int spaces = enc->indent * INDENT_STEP;
145	need (enc, enc->indent); \
146	for (i_ = enc->indent * 3; i_--; )\
147	encode_ch (enc, ' '); \
148	} \
149	SE
150		244
151	#define SPACE SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, ' '); } SE	245	need (enc, spaces);
152	#define NL SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, '\n'); } SE	246	memset (enc->cur, ' ', spaces);
153	#define COMMA SB \	247	enc->cur += spaces;
		248	}
		249	}
		250
		251	static void
		252	encode_space (enc_t *enc)
		253	{
		254	need (enc, 1);
154	encode_ch (enc, ','); \	255	encode_ch (enc, ' ');
		256	}
		257
		258	static void
		259	encode_nl (enc_t *enc)
		260	{
155	if (enc->flags & F_INDENT) \	261	if (enc->flags & F_INDENT)
156	NL; \	262	{
		263	need (enc, 1);
		264	encode_ch (enc, '\n');
		265	}
		266	}
		267
		268	static void
		269	encode_comma (enc_t *enc)
		270	{
		271	encode_ch (enc, ',');
		272
		273	if (enc->flags & F_INDENT)
		274	encode_nl (enc);
157	else if (enc->flags & F_SPACE_AFTER) \	275	else if (enc->flags & F_SPACE_AFTER)
158	SPACE; \	276	encode_space (enc);
159	SE	277	}
160		278
161	static void encode_sv (enc_t enc, SV sv);	279	static void encode_sv (enc_t enc, SV sv);
162		280
163	static void	281	static void
164	encode_av (enc_t enc, AV av)	282	encode_av (enc_t enc, AV av)
165	{	283	{
166	int i, len = av_len (av);	284	int i, len = av_len (av);
167		285
168	encode_ch (enc, '['); NL;	286	if (enc->indent >= enc->maxdepth)
		287	croak ("data structure too deep (hit recursion limit)");
		288
		289	encode_ch (enc, '['); encode_nl (enc);
169	++enc->indent;	290	++enc->indent;
170		291
171	for (i = 0; i <= len; ++i)	292	for (i = 0; i <= len; ++i)
172	{	293	{
173	INDENT;	294	encode_indent (enc);
174	encode_sv (enc, *av_fetch (av, i, 0));	295	encode_sv (enc, *av_fetch (av, i, 0));
175		296
176	if (i < len)	297	if (i < len)
177	COMMA;	298	encode_comma (enc);
178	}	299	}
179		300
180	NL;	301	encode_nl (enc);
181		302
182	--enc->indent;	303	--enc->indent;
183	INDENT; encode_ch (enc, ']');	304	encode_indent (enc); encode_ch (enc, ']');
184	}	305	}
185		306
186	static void	307	static void
187	encode_he (enc_t enc, HE he)	308	encode_he (enc_t enc, HE he)
188	{	309	{
…		…
190		311
191	if (HeKLEN (he) == HEf_SVKEY)	312	if (HeKLEN (he) == HEf_SVKEY)
192	{	313	{
193	SV *sv = HeSVKEY (he);	314	SV *sv = HeSVKEY (he);
194	STRLEN len;	315	STRLEN len;
		316	char *str;
		317
		318	SvGETMAGIC (sv);
195	char *str = SvPV (sv, len);	319	str = SvPV (sv, len);
196		320
197	encode_str (enc, str, len, SvUTF8 (sv));	321	encode_str (enc, str, len, SvUTF8 (sv));
198	}	322	}
199	else	323	else
200	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	324	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
201		325
202	encode_ch (enc, '"');	326	encode_ch (enc, '"');
203		327
204	if (enc->flags & F_SPACE_BEFORE) SPACE;	328	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);
205	encode_ch (enc, ':');	329	encode_ch (enc, ':');
206	if (enc->flags & F_SPACE_AFTER ) SPACE;	330	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);
207	encode_sv (enc, HeVAL (he));	331	encode_sv (enc, HeVAL (he));
208	}	332	}
209		333
210	// compare hash entries, used when all keys are bytestrings	334	// compare hash entries, used when all keys are bytestrings
211	static int	335	static int
…		…
217	HE b = (HE **)b_;	341	HE b = (HE **)b_;
218		342
219	STRLEN la = HeKLEN (a);	343	STRLEN la = HeKLEN (a);
220	STRLEN lb = HeKLEN (b);	344	STRLEN lb = HeKLEN (b);
221		345
222	if (!(cmp == memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))	346	if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))
223	cmp = la < lb ? -1 : la == lb ? 0 : 1;	347	cmp = la - lb;
224		348
225	return cmp;	349	return cmp;
226	}	350	}
227		351
228	// compare hash entries, used when some keys are sv's or utf-x	352	// compare hash entries, used when some keys are sv's or utf-x
…		…
235	static void	359	static void
236	encode_hv (enc_t enc, HV hv)	360	encode_hv (enc_t enc, HV hv)
237	{	361	{
238	int count, i;	362	int count, i;
239		363
		364	if (enc->indent >= enc->maxdepth)
		365	croak ("data structure too deep (hit recursion limit)");
		366
240	encode_ch (enc, '{'); NL; ++enc->indent;	367	encode_ch (enc, '{'); encode_nl (enc); ++enc->indent;
241		368
242	if ((count = hv_iterinit (hv)))	369	if ((count = hv_iterinit (hv)))
243	{	370	{
244	// for canonical output we have to sort by keys first	371	// for canonical output we have to sort by keys first
245	// actually, this is mostly due to the stupid so-called	372	// actually, this is mostly due to the stupid so-called
246	// security workaround added somewhere in 5.8.x.	373	// security workaround added somewhere in 5.8.x.
247	// that randomises hash orderings	374	// that randomises hash orderings
248	if (enc->flags & F_CANONICAL)	375	if (enc->flags & F_CANONICAL)
249	{	376	{
250	HE he, hes [count];	377	HE he, hes [count]; // if your compiler dies here, you need to enable C99 mode
251	int fast = 1;	378	int fast = 1;
252		379
253	i = 0;	380	i = 0;
254	while ((he = hv_iternext (hv)))	381	while ((he = hv_iternext (hv)))
255	{	382	{
…		…
262		389
263	if (fast)	390	if (fast)
264	qsort (hes, count, sizeof (HE *), he_cmp_fast);	391	qsort (hes, count, sizeof (HE *), he_cmp_fast);
265	else	392	else
266	{	393	{
267	// hack to disable "use bytes"	394	// hack to forcefully disable "use bytes"
268	COP *oldcop = PL_curcop, cop;	395	COP cop = *PL_curcop;
269	cop.op_private = 0;	396	cop.op_private = 0;
		397
		398	ENTER;
		399	SAVETMPS;
		400
		401	SAVEVPTR (PL_curcop);
270	PL_curcop = &cop;	402	PL_curcop = &cop;
271		403
272	SAVETMPS;
273	qsort (hes, count, sizeof (HE *), he_cmp_slow);	404	qsort (hes, count, sizeof (HE *), he_cmp_slow);
		405
274	FREETMPS;	406	FREETMPS;
275		407	LEAVE;
276	PL_curcop = oldcop;
277	}	408	}
278		409
279	for (i = 0; i < count; ++i)	410	for (i = 0; i < count; ++i)
280	{	411	{
281	INDENT;	412	encode_indent (enc);
282	encode_he (enc, hes [i]);	413	encode_he (enc, hes [i]);
283		414
284	if (i < count - 1)	415	if (i < count - 1)
285	COMMA;	416	encode_comma (enc);
286	}	417	}
287		418
288	NL;	419	encode_nl (enc);
289	}	420	}
290	else	421	else
291	{	422	{
292	SV *sv;
293	HE *he = hv_iternext (hv);	423	HE *he = hv_iternext (hv);
294		424
295	for (;;)	425	for (;;)
296	{	426	{
297	INDENT;	427	encode_indent (enc);
298	encode_he (enc, he);	428	encode_he (enc, he);
299		429
300	if (!(he = hv_iternext (hv)))	430	if (!(he = hv_iternext (hv)))
301	break;	431	break;
302		432
303	COMMA;	433	encode_comma (enc);
304	}	434	}
305		435
306	NL;	436	encode_nl (enc);
307	}	437	}
308	}	438	}
309		439
310	--enc->indent; INDENT; encode_ch (enc, '}');	440	--enc->indent; encode_indent (enc); encode_ch (enc, '}');
		441	}
		442
		443	// encode objects, arrays and special \0=false and \1=true values.
		444	static void
		445	encode_rv (enc_t enc, SV sv)
		446	{
		447	svtype svt;
		448
		449	SvGETMAGIC (sv);
		450	svt = SvTYPE (sv);
		451
		452	if (svt == SVt_PVHV)
		453	encode_hv (enc, (HV *)sv);
		454	else if (svt == SVt_PVAV)
		455	encode_av (enc, (AV *)sv);
		456	else if (svt < SVt_PVAV)
		457	{
		458	if (SvNIOK (sv) && SvIV (sv) == 0)
		459	encode_str (enc, "false", 5, 0);
		460	else if (SvNIOK (sv) && SvIV (sv) == 1)
		461	encode_str (enc, "true", 4, 0);
		462	else
		463	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
		464	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		465	}
		466	else
		467	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
		468	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
311	}	469	}
312		470
313	static void	471	static void
314	encode_sv (enc_t enc, SV sv)	472	encode_sv (enc_t enc, SV sv)
315	{	473	{
		474	SvGETMAGIC (sv);
		475
316	if (SvPOKp (sv))	476	if (SvPOKp (sv))
317	{	477	{
318	STRLEN len;	478	STRLEN len;
319	char *str = SvPV (sv, len);	479	char *str = SvPV (sv, len);
320	encode_ch (enc, '"');	480	encode_ch (enc, '"');
…		…
334	SvIsUV(sv)	494	SvIsUV(sv)
335	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))	495	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))
336	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));	496	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));
337	}	497	}
338	else if (SvROK (sv))	498	else if (SvROK (sv))
339	{	499	encode_rv (enc, SvRV (sv));
340	if (!--enc->max_recurse)
341	croak ("data structure too deep (hit recursion limit)");
342
343	sv = SvRV (sv);
344
345	switch (SvTYPE (sv))
346	{
347	case SVt_PVAV: encode_av (enc, (AV *)sv); break;
348	case SVt_PVHV: encode_hv (enc, (HV *)sv); break;
349
350	default:
351	croak ("JSON can only represent references to arrays or hashes");
352	}
353	}
354	else if (!SvOK (sv))	500	else if (!SvOK (sv))
355	encode_str (enc, "null", 4, 0);	501	encode_str (enc, "null", 4, 0);
356	else	502	else
357	croak ("encountered perl type that JSON cannot handle");	503	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
		504	SvPV_nolen (sv), SvFLAGS (sv));
358	}	505	}
359		506
360	static SV *	507	static SV *
361	encode_json (SV *scalar, UV flags)	508	encode_json (SV *scalar, U32 flags)
362	{	509	{
363	enc_t enc;	510	enc_t enc;
		511
		512	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))
		513	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
		514
364	enc.flags = flags;	515	enc.flags = flags;
365	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	516	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
366	enc.cur = SvPVX (enc.sv);	517	enc.cur = SvPVX (enc.sv);
367	enc.end = SvEND (enc.sv);	518	enc.end = SvEND (enc.sv);
368	enc.max_recurse = 0;
369	enc.indent = 0;	519	enc.indent = 0;
		520	enc.maxdepth = DEC_DEPTH (flags);
370		521
371	SvPOK_only (enc.sv);	522	SvPOK_only (enc.sv);
372	encode_sv (&enc, scalar);	523	encode_sv (&enc, scalar);
373		524
		525	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
		526	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
		527
374	if (!(flags & (F_ASCII \| F_UTF8)))	528	if (!(flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
375	SvUTF8_on (enc.sv);	529	SvUTF8_on (enc.sv);
376		530
377	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	531	if (enc.flags & F_SHRINK)
		532	shrink (enc.sv);
		533
378	return enc.sv;	534	return enc.sv;
379	}	535	}
380		536
381	/////////////////////////////////////////////////////////////////////////////	537	/////////////////////////////////////////////////////////////////////////////
		538	// decoder
382		539
383	#define WS \	540	// structure used for decoding JSON
		541	typedef struct
		542	{
		543	char *cur; // current parser pointer
		544	char *end; // end of input string
		545	const char *err; // parse error, if != 0
		546	U32 flags; // F_*
		547	U32 depth; // recursion depth
		548	U32 maxdepth; // recursion depth limit
		549	} dec_t;
		550
		551	static void
		552	decode_ws (dec_t *dec)
		553	{
384	for (;;) \	554	for (;;)
385	{ \	555	{
386	char ch = *dec->cur; \	556	char ch = *dec->cur;
		557
387	if (ch > 0x20 \	558	if (ch > 0x20
388	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) \	559	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09))
389	break; \	560	break;
		561
390	++dec->cur; \	562	++dec->cur;
391	}	563	}
		564	}
392		565
393	#define ERR(reason) SB dec->err = reason; goto fail; SE	566	#define ERR(reason) SB dec->err = reason; goto fail; SE
		567
394	#define EXPECT_CH(ch) SB \	568	#define EXPECT_CH(ch) SB \
395	if (*dec->cur != ch) \	569	if (*dec->cur != ch) \
396	ERR (# ch " expected"); \	570	ERR (# ch " expected"); \
397	++dec->cur; \	571	++dec->cur; \
398	SE	572	SE
399		573
		574	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")
		575	#define DEC_DEC_DEPTH --dec->depth
		576
400	static SV decode_sv (dec_t dec);	577	static SV decode_sv (dec_t dec);
401
402	#define APPEND_CH(ch) SB \
403	SvGROW (sv, cur + 1 + 1); \
404	SvPVX (sv)[cur++] = (ch); \
405	SE
406		578
407	static signed char decode_hexdigit[256];	579	static signed char decode_hexdigit[256];
408		580
409	static UV	581	static UV
410	decode_4hex (dec_t *dec)	582	decode_4hex (dec_t *dec)
411	{	583	{
412	signed char d1, d2, d3, d4;	584	signed char d1, d2, d3, d4;
		585	unsigned char cur = (unsigned char )dec->cur;
413		586
414	d1 = decode_hexdigit [((unsigned char *)dec->cur) [0]];
415	if (d1 < 0) ERR ("four hexadecimal digits expected");	587	d1 = decode_hexdigit [cur [0]]; if (d1 < 0) ERR ("four hexadecimal digits expected");
416	d2 = decode_hexdigit [((unsigned char *)dec->cur) [1]];
417	if (d2 < 0) ERR ("four hexadecimal digits expected");	588	d2 = decode_hexdigit [cur [1]]; if (d2 < 0) ERR ("four hexadecimal digits expected");
418	d3 = decode_hexdigit [((unsigned char *)dec->cur) [2]];
419	if (d3 < 0) ERR ("four hexadecimal digits expected");	589	d3 = decode_hexdigit [cur [2]]; if (d3 < 0) ERR ("four hexadecimal digits expected");
420	d4 = decode_hexdigit [((unsigned char *)dec->cur) [3]];
421	if (d4 < 0) ERR ("four hexadecimal digits expected");	590	d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected");
422		591
423	dec->cur += 4;	592	dec->cur += 4;
424		593
425	return ((UV)d1) << 12	594	return ((UV)d1) << 12
426	\| ((UV)d2) << 8	595	\| ((UV)d2) << 8
…		…
432	}	601	}
433		602
434	static SV *	603	static SV *
435	decode_str (dec_t *dec)	604	decode_str (dec_t *dec)
436	{	605	{
437	SV *sv = NEWSV (0,2);	606	SV *sv = 0;
438	STRLEN cur = 0;
439	int utf8 = 0;	607	int utf8 = 0;
440		608
441	for (;;)	609	do
442	{	610	{
443	unsigned char ch = (unsigned char )dec->cur;	611	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];
		612	char *cur = buf;
444		613
445	if (ch == '"')	614	do
446	break;
447	else if (ch == '\\')
448	{	615	{
449	switch (*++dec->cur)	616	unsigned char ch = (unsigned char )dec->cur++;
		617
		618	if (ch == '"')
450	{	619	{
451	case '\\':	620	--dec->cur;
452	case '/':	621	break;
453	case '"': APPEND_CH (*dec->cur++); break;	622	}
454		623	else if (ch == '\\')
455	case 'b': APPEND_CH ('\010'); ++dec->cur; break;	624	{
456	case 't': APPEND_CH ('\011'); ++dec->cur; break;	625	switch (*dec->cur)
457	case 'n': APPEND_CH ('\012'); ++dec->cur; break;
458	case 'f': APPEND_CH ('\014'); ++dec->cur; break;
459	case 'r': APPEND_CH ('\015'); ++dec->cur; break;
460
461	case 'u':
462	{	626	{
463	UV lo, hi;	627	case '\\':
464	++dec->cur;	628	case '/':
		629	case '"': cur++ = dec->cur++; break;
465		630
466	hi = decode_4hex (dec);	631	case 'b': ++dec->cur; *cur++ = '\010'; break;
467	if (hi == (UV)-1)	632	case 't': ++dec->cur; *cur++ = '\011'; break;
468	goto fail;	633	case 'n': ++dec->cur; *cur++ = '\012'; break;
		634	case 'f': ++dec->cur; *cur++ = '\014'; break;
		635	case 'r': ++dec->cur; *cur++ = '\015'; break;
469		636
470	// possibly a surrogate pair	637	case 'u':
471	if (hi >= 0xd800 && hi < 0xdc00)
472	{	638	{
473	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')	639	UV lo, hi;
474	ERR ("illegal surrogate character");
475
476	dec->cur += 2;	640	++dec->cur;
477		641
478	lo = decode_4hex (dec);	642	hi = decode_4hex (dec);
479	if (lo == (UV)-1)	643	if (hi == (UV)-1)
480	goto fail;	644	goto fail;
481		645
		646	// possibly a surrogate pair
		647	if (hi >= 0xd800)
		648	if (hi < 0xdc00)
		649	{
		650	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')
		651	ERR ("missing low surrogate character in surrogate pair");
		652
		653	dec->cur += 2;
		654
		655	lo = decode_4hex (dec);
		656	if (lo == (UV)-1)
		657	goto fail;
		658
482	if (lo < 0xdc00 \|\| lo >= 0xe000)	659	if (lo < 0xdc00 \|\| lo >= 0xe000)
483	ERR ("surrogate pair expected");	660	ERR ("surrogate pair expected");
484		661
485	hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000;	662	hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000;
		663	}
		664	else if (hi < 0xe000)
		665	ERR ("missing high surrogate character in surrogate pair");
		666
		667	if (hi >= 0x80)
		668	{
		669	utf8 = 1;
		670
		671	cur = (char *)uvuni_to_utf8_flags (cur, hi, 0);
		672	}
		673	else
		674	*cur++ = hi;
486	}	675	}
487	else if (lo >= 0xdc00 && lo < 0xe000)
488	ERR ("illegal surrogate character");
489
490	if (hi >= 0x80)
491	{	676	break;
492	utf8 = 1;
493		677
494	SvGROW (sv, cur + 4 + 1); // at most 4 bytes for 21 bits
495	cur = (char *)uvuni_to_utf8_flags (SvPVX (sv) + cur, hi, 0) - SvPVX (sv);
496	}
497	else	678	default:
498	APPEND_CH (hi);	679	--dec->cur;
		680	ERR ("illegal backslash escape sequence in string");
499	}	681	}
		682	}
		683	else if (ch >= 0x20 && ch <= 0x7f)
		684	*cur++ = ch;
		685	else if (ch >= 0x80)
		686	{
		687	STRLEN clen;
		688	UV uch;
		689
		690	--dec->cur;
		691
		692	uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen);
		693	if (clen == (STRLEN)-1)
		694	ERR ("malformed UTF-8 character in JSON string");
		695
		696	do
		697	cur++ = dec->cur++;
		698	while (--clen);
		699
		700	utf8 = 1;
		701	}
		702	else
		703	{
		704	--dec->cur;
		705
		706	if (!ch)
		707	ERR ("unexpected end of string while parsing JSON string");
500	break;	708	else
		709	ERR ("invalid character encountered while parsing JSON string");
501	}	710	}
502	}	711	}
503	else if (ch >= 0x20 && ch <= 0x7f)	712	while (cur < buf + SHORT_STRING_LEN);
504	APPEND_CH (*dec->cur++);	713
505	else if (ch >= 0x80)	714	{
		715	STRLEN len = cur - buf;
		716
		717	if (sv)
506	{	718	{
507	STRLEN clen;	719	SvGROW (sv, SvCUR (sv) + len + 1);
508	UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY);	720	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
509	if (clen < 0)	721	SvCUR_set (sv, SvCUR (sv) + len);
510	ERR ("malformed UTF-8 character in string, cannot convert to JSON");
511
512	SvGROW (sv, cur + clen + 1); // at most 4 bytes for 21 bits
513	memcpy (SvPVX (sv) + cur, dec->cur, clen);
514	dec->cur += clen;
515	}	722	}
516	else	723	else
517	ERR ("invalid character encountered");	724	sv = newSVpvn (buf, len);
518	}	725	}
		726	}
		727	while (*dec->cur != '"');
519		728
520	++dec->cur;	729	++dec->cur;
521		730
		731	if (sv)
		732	{
522	SvPOK_only (sv);	733	SvPOK_only (sv);
523
524	SvCUR_set (sv, cur);
525	*SvEND (sv) = 0;	734	*SvEND (sv) = 0;
526		735
527	if (utf8)	736	if (utf8)
528	SvUTF8_on (sv);	737	SvUTF8_on (sv);
		738	}
		739	else
		740	sv = newSVpvn ("", 0);
529		741
530	return sv;	742	return sv;
531		743
532	fail:	744	fail:
533	SvREFCNT_dec (sv);
534	return 0;	745	return 0;
535	}	746	}
536		747
537	static SV *	748	static SV *
538	decode_num (dec_t *dec)	749	decode_num (dec_t *dec)
…		…
548	{	759	{
549	++dec->cur;	760	++dec->cur;
550	if (dec->cur >= '0' && dec->cur <= '9')	761	if (dec->cur >= '0' && dec->cur <= '9')
551	ERR ("malformed number (leading zero must not be followed by another digit)");	762	ERR ("malformed number (leading zero must not be followed by another digit)");
552	}	763	}
553		764	else if (dec->cur < '0' \|\| dec->cur > '9')
554	// int	765	ERR ("malformed number (no digits after initial minus)");
		766	else
		767	do
		768	{
		769	++dec->cur;
		770	}
555	while (dec->cur >= '0' && dec->cur <= '9')	771	while (dec->cur >= '0' && dec->cur <= '9');
556	++dec->cur;
557		772
558	// [frac]	773	// [frac]
559	if (*dec->cur == '.')	774	if (*dec->cur == '.')
560	{	775	{
561	is_nv = 1;	776	++dec->cur;
		777
		778	if (dec->cur < '0' \|\| dec->cur > '9')
		779	ERR ("malformed number (no digits after decimal point)");
562		780
563	do	781	do
564	{	782	{
565	++dec->cur;	783	++dec->cur;
566	}	784	}
567	while (dec->cur >= '0' && dec->cur <= '9');	785	while (dec->cur >= '0' && dec->cur <= '9');
		786
		787	is_nv = 1;
568	}	788	}
569		789
570	// [exp]	790	// [exp]
571	if (dec->cur == 'e' \|\| dec->cur == 'E')	791	if (dec->cur == 'e' \|\| dec->cur == 'E')
572	{	792	{
573	is_nv = 1;
574
575	++dec->cur;	793	++dec->cur;
		794
576	if (dec->cur == '-' \|\| dec->cur == '+')	795	if (dec->cur == '-' \|\| dec->cur == '+')
577	++dec->cur;	796	++dec->cur;
578		797
		798	if (dec->cur < '0' \|\| dec->cur > '9')
		799	ERR ("malformed number (no digits after exp sign)");
		800
		801	do
		802	{
		803	++dec->cur;
		804	}
579	while (dec->cur >= '0' && dec->cur <= '9')	805	while (dec->cur >= '0' && dec->cur <= '9');
580	++dec->cur;	806
		807	is_nv = 1;
581	}	808	}
582		809
583	if (!is_nv)	810	if (!is_nv)
584	{	811	{
585	UV uv;	812	UV uv;
…		…
603	static SV *	830	static SV *
604	decode_av (dec_t *dec)	831	decode_av (dec_t *dec)
605	{	832	{
606	AV *av = newAV ();	833	AV *av = newAV ();
607		834
		835	DEC_INC_DEPTH;
		836	decode_ws (dec);
		837
		838	if (*dec->cur == ']')
		839	++dec->cur;
		840	else
608	for (;;)	841	for (;;)
609	{	842	{
610	SV *value;	843	SV *value;
611		844
612	value = decode_sv (dec);	845	value = decode_sv (dec);
613	if (!value)	846	if (!value)
614	goto fail;	847	goto fail;
615		848
616	av_push (av, value);	849	av_push (av, value);
617		850
618	WS;	851	decode_ws (dec);
619		852
620	if (*dec->cur == ']')	853	if (*dec->cur == ']')
621	{	854	{
622	++dec->cur;	855	++dec->cur;
623	break;	856	break;
		857	}
624	}	858
625
626	if (*dec->cur != ',')	859	if (*dec->cur != ',')
627	ERR (", or ] expected while parsing array");	860	ERR (", or ] expected while parsing array");
628		861
629	++dec->cur;	862	++dec->cur;
630	}	863	}
631		864
		865	DEC_DEC_DEPTH;
632	return newRV_noinc ((SV *)av);	866	return newRV_noinc ((SV *)av);
633		867
634	fail:	868	fail:
635	SvREFCNT_dec (av);	869	SvREFCNT_dec (av);
		870	DEC_DEC_DEPTH;
636	return 0;	871	return 0;
637	}	872	}
638		873
639	static SV *	874	static SV *
640	decode_hv (dec_t *dec)	875	decode_hv (dec_t *dec)
641	{	876	{
642	HV *hv = newHV ();	877	HV *hv = newHV ();
643		878
		879	DEC_INC_DEPTH;
		880	decode_ws (dec);
		881
		882	if (*dec->cur == '}')
		883	++dec->cur;
		884	else
644	for (;;)	885	for (;;)
645	{	886	{
646	SV key, value;	887	SV key, value;
647		888
648	WS; EXPECT_CH ('"');	889	decode_ws (dec); EXPECT_CH ('"');
649		890
650	key = decode_str (dec);	891	key = decode_str (dec);
651	if (!key)	892	if (!key)
652	goto fail;
653
654	WS; EXPECT_CH (':');
655
656	value = decode_sv (dec);
657	if (!value)
658	{
659	SvREFCNT_dec (key);
660	goto fail;	893	goto fail;
		894
		895	decode_ws (dec); EXPECT_CH (':');
		896
		897	value = decode_sv (dec);
		898	if (!value)
		899	{
		900	SvREFCNT_dec (key);
		901	goto fail;
661	}	902	}
662		903
663	//TODO: optimise
664	hv_store_ent (hv, key, value, 0);	904	hv_store_ent (hv, key, value, 0);
		905	SvREFCNT_dec (key);
665		906
666	WS;	907	decode_ws (dec);
667		908
668	if (*dec->cur == '}')	909	if (*dec->cur == '}')
669	{	910	{
670	++dec->cur;	911	++dec->cur;
671	break;	912	break;
672	}	913	}
673		914
674	if (*dec->cur != ',')	915	if (*dec->cur != ',')
675	ERR (", or } expected while parsing object/hash");	916	ERR (", or } expected while parsing object/hash");
676		917
677	++dec->cur;	918	++dec->cur;
678	}	919	}
679		920
		921	DEC_DEC_DEPTH;
680	return newRV_noinc ((SV *)hv);	922	return newRV_noinc ((SV *)hv);
681		923
682	fail:	924	fail:
683	SvREFCNT_dec (hv);	925	SvREFCNT_dec (hv);
		926	DEC_DEC_DEPTH;
684	return 0;	927	return 0;
685	}	928	}
686		929
687	static SV *	930	static SV *
688	decode_sv (dec_t *dec)	931	decode_sv (dec_t *dec)
689	{	932	{
690	WS;	933	decode_ws (dec);
691	switch (*dec->cur)	934	switch (*dec->cur)
692	{	935	{
693	case '"': ++dec->cur; return decode_str (dec);	936	case '"': ++dec->cur; return decode_str (dec);
694	case '[': ++dec->cur; return decode_av (dec);	937	case '[': ++dec->cur; return decode_av (dec);
695	case '{': ++dec->cur; return decode_hv (dec);	938	case '{': ++dec->cur; return decode_hv (dec);
…		…
723		966
724	case 'n':	967	case 'n':
725	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	968	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
726	{	969	{
727	dec->cur += 4;	970	dec->cur += 4;
728	return newSViv (1);	971	return newSVsv (&PL_sv_undef);
729	}	972	}
730	else	973	else
731	ERR ("'null' expected");	974	ERR ("'null' expected");
732		975
733	break;	976	break;
734		977
735	default:	978	default:
736	ERR ("malformed json string");	979	ERR ("malformed JSON string, neither array, object, number, string or atom");
737	break;	980	break;
738	}	981	}
739		982
740	fail:	983	fail:
741	return 0;	984	return 0;
742	}	985	}
743		986
744	static SV *	987	static SV *
745	decode_json (SV *string, UV flags)	988	decode_json (SV string, U32 flags, UV offset_return)
746	{	989	{
		990	dec_t dec;
		991	UV offset;
747	SV *sv;	992	SV *sv;
748		993
		994	SvGETMAGIC (string);
		995	SvUPGRADE (string, SVt_PV);
		996
749	if (!(flags & F_UTF8))	997	if (flags & F_UTF8)
		998	sv_utf8_downgrade (string, 0);
		999	else
750	sv_utf8_upgrade (string);	1000	sv_utf8_upgrade (string);
751		1001
752	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1002	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
753		1003
754	dec_t dec;
755	dec.flags = flags;	1004	dec.flags = flags;
756	dec.cur = SvPVX (string);	1005	dec.cur = SvPVX (string);
757	dec.end = SvEND (string);	1006	dec.end = SvEND (string);
758	dec.err = 0;	1007	dec.err = 0;
		1008	dec.depth = 0;
		1009	dec.maxdepth = DEC_DEPTH (dec.flags);
759		1010
760	*dec.end = 1; // invalid anywhere	1011	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
761	sv = decode_sv (&dec);	1012	sv = decode_sv (&dec);
762	*dec.end = 0;	1013
		1014	if (!(offset_return \|\| !sv))
		1015	{
		1016	// check for trailing garbage
		1017	decode_ws (&dec);
		1018
		1019	if (*dec.cur)
		1020	{
		1021	dec.err = "garbage after JSON object";
		1022	SvREFCNT_dec (sv);
		1023	sv = 0;
		1024	}
		1025	}
		1026
		1027	if (offset_return \|\| !sv)
		1028	{
		1029	offset = dec.flags & F_UTF8
		1030	? dec.cur - SvPVX (string)
		1031	: utf8_distance (dec.cur, SvPVX (string));
		1032
		1033	if (offset_return)
		1034	*offset_return = offset;
		1035	}
763		1036
764	if (!sv)	1037	if (!sv)
765	{	1038	{
766	IV offset = utf8_distance (dec.cur, SvPVX (string));
767	SV *uni = sv_newmortal ();	1039	SV *uni = sv_newmortal ();
768		1040
		1041	// horrible hack to silence warning inside pv_uni_display
		1042	COP cop = *PL_curcop;
		1043	cop.cop_warnings = pWARN_NONE;
		1044	ENTER;
		1045	SAVEVPTR (PL_curcop);
		1046	PL_curcop = &cop;
769	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1047	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
		1048	LEAVE;
		1049
770	croak ("%s, at character %d (%s)",	1050	croak ("%s, at character offset %d [\"%s\"]",
771	dec.err,	1051	dec.err,
772	(int)offset,	1052	(int)offset,
773	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1053	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
774	}	1054	}
775		1055
776	sv_dump (sv);//D
777	return sv_2mortal (sv);	1056	sv = sv_2mortal (sv);
		1057
		1058	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))
		1059	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
		1060
		1061	return sv;
778	}	1062	}
		1063
		1064	/////////////////////////////////////////////////////////////////////////////
		1065	// XS interface functions
779		1066
780	MODULE = JSON::XS PACKAGE = JSON::XS	1067	MODULE = JSON::XS PACKAGE = JSON::XS
781		1068
782	BOOT:	1069	BOOT:
783	{	1070	{
784	int i;	1071	int i;
785		1072
786	memset (decode_hexdigit, 0xff, 256);	1073	memset (decode_hexdigit, 0xff, 256);
		1074
787	for (i = 10; i--; )	1075	for (i = 0; i < 256; ++i)
788	decode_hexdigit ['0' + i] = i;	1076	decode_hexdigit [i] =
789		1077	i >= '0' && i <= '9' ? i - '0'
790	for (i = 6; --i; )	1078	: i >= 'a' && i <= 'f' ? i - 'a' + 10
791	{	1079	: i >= 'A' && i <= 'F' ? i - 'A' + 10
792	decode_hexdigit ['a' + i] = 10 + i;	1080	: -1;
793	decode_hexdigit ['A' + i] = 10 + i;
794	}
795		1081
796	json_stash = gv_stashpv ("JSON::XS", 1);	1082	json_stash = gv_stashpv ("JSON::XS", 1);
797	}	1083	}
		1084
		1085	PROTOTYPES: DISABLE
798		1086
799	SV new (char dummy)	1087	SV new (char dummy)
800	CODE:	1088	CODE:
801	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);	1089	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);
802	OUTPUT:	1090	OUTPUT:
803	RETVAL	1091	RETVAL
804		1092
805	SV ascii (SV self, int enable)	1093	SV ascii (SV self, int enable = 1)
806	ALIAS:	1094	ALIAS:
807	ascii = F_ASCII	1095	ascii = F_ASCII
		1096	latin1 = F_LATIN1
808	utf8 = F_UTF8	1097	utf8 = F_UTF8
809	indent = F_INDENT	1098	indent = F_INDENT
810	canonical = F_CANONICAL	1099	canonical = F_CANONICAL
811	space_before = F_SPACE_BEFORE	1100	space_before = F_SPACE_BEFORE
812	space_after = F_SPACE_AFTER	1101	space_after = F_SPACE_AFTER
813	json_rpc = F_JSON_RPC	1102	pretty = F_PRETTY
		1103	allow_nonref = F_ALLOW_NONREF
		1104	shrink = F_SHRINK
814	CODE:	1105	CODE:
815	{	1106	{
816	UV *uv = SvJSON (self);	1107	UV *uv = SvJSON (self);
817	if (enable)	1108	if (enable)
818	*uv \|= ix;	1109	*uv \|= ix;
…		…
822	RETVAL = newSVsv (self);	1113	RETVAL = newSVsv (self);
823	}	1114	}
824	OUTPUT:	1115	OUTPUT:
825	RETVAL	1116	RETVAL
826		1117
		1118	SV max_depth (SV self, UV max_depth = 0x80000000UL)
		1119	CODE:
		1120	{
		1121	UV *uv = SvJSON (self);
		1122	UV log2 = 0;
		1123
		1124	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
		1125
		1126	while ((1UL << log2) < max_depth)
		1127	++log2;
		1128
		1129	uv = uv & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
		1130
		1131	RETVAL = newSVsv (self);
		1132	}
		1133	OUTPUT:
		1134	RETVAL
		1135
827	void encode (SV self, SV scalar)	1136	void encode (SV self, SV scalar)
828	PPCODE:	1137	PPCODE:
829	XPUSHs (encode_json (scalar, *SvJSON (self)));	1138	XPUSHs (encode_json (scalar, *SvJSON (self)));
830		1139
831	void decode (SV self, SV jsondata)	1140	void decode (SV self, SV jsonstr)
832	PPCODE:	1141	PPCODE:
833	XPUSHs (decode_json (jsondata, *SvJSON (self)));	1142	XPUSHs (decode_json (jsonstr, *SvJSON (self), 0));
834		1143
		1144	void decode_prefix (SV self, SV jsonstr)
		1145	PPCODE:
		1146	{
		1147	UV offset;
		1148	EXTEND (SP, 2);
		1149	PUSHs (decode_json (jsonstr, *SvJSON (self), &offset));
		1150	PUSHs (sv_2mortal (newSVuv (offset)));
		1151	}
		1152
		1153	PROTOTYPES: ENABLE
		1154
		1155	void to_json (SV *scalar)
		1156	ALIAS:
		1157	objToJson = 0
		1158	PPCODE:
		1159	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));
		1160
		1161	void from_json (SV *jsonstr)
		1162	ALIAS:
		1163	jsonToObj = 0
		1164	PPCODE:
		1165	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8, 0));
		1166

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Comparing JSON-XS/XS.xs (file contents): Revision 1.1 by root, Thu Mar 22 16:40:16 2007 UTC vs. Revision 1.32 by root, Wed May 9 16:41:12 2007 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.1 by root, Thu Mar 22 16:40:16 2007 UTC vs.
Revision 1.32 by root, Wed May 9 16:41:12 2007 UTC