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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.3 by root, Thu Mar 22 18:10:29 2007 UTC vs.
Revision 1.29 by root, Wed May 9 15:34:04 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
10	#define F_UTF8 0x00000002	15	#define F_UTF8 0x00000002UL
11	#define F_INDENT 0x00000004	16	#define F_INDENT 0x00000004UL
12	#define F_CANONICAL 0x00000008	17	#define F_CANONICAL 0x00000008UL
13	#define F_SPACE_BEFORE 0x00000010	18	#define F_SPACE_BEFORE 0x00000010UL
14	#define F_SPACE_AFTER 0x00000020	19	#define F_SPACE_AFTER 0x00000020UL
15	#define F_JSON_RPC 0x00000040
16	#define F_ALLOW_NONREF 0x00000080	20	#define F_ALLOW_NONREF 0x00000080UL
		21	#define F_SHRINK 0x00000100UL
		22	#define F_MAXDEPTH 0xf8000000UL
		23	#define S_MAXDEPTH 27
		24
		25	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
		26
		27	// F_SELFCONVERT? <=> to_json/toJson
		28	// F_BLESSED? <=> { $__class__$ => }
17		29
18	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	30	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
19	#define F_DEFAULT 0	31	#define F_DEFAULT (9UL << S_MAXDEPTH)
20		32
21	#define INIT_SIZE 32 // initial scalar size to be allocated	33	#define INIT_SIZE 32 // initial scalar size to be allocated
		34	#define INDENT_STEP 3 // spaces per indentation level
		35
		36	#define SHORT_STRING_LEN 512 // special-case strings of up to this size
22		37
23	#define SB do {	38	#define SB do {
24	#define SE } while (0)	39	#define SE } while (0)
25		40
26	static HV *json_stash;	41	static HV *json_stash; // JSON::XS::
		42
		43	/////////////////////////////////////////////////////////////////////////////
		44	// utility functions
		45
		46	static UV *
		47	SvJSON (SV *sv)
		48	{
		49	if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash))
		50	croak ("object is not of type JSON::XS");
		51
		52	return &SvUVX (SvRV (sv));
		53	}
		54
		55	static void
		56	shrink (SV *sv)
		57	{
		58	sv_utf8_downgrade (sv, 1);
		59	if (SvLEN (sv) > SvCUR (sv) + 1)
		60	{
		61	#ifdef SvPV_shrink_to_cur
		62	SvPV_shrink_to_cur (sv);
		63	#elif defined (SvPV_renew)
		64	SvPV_renew (sv, SvCUR (sv) + 1);
		65	#endif
		66	}
		67	}
		68
		69	// decode an utf-8 character and return it, or (UV)-1 in
		70	// case of an error.
		71	// we special-case "safe" characters from U+80 .. U+7FF,
		72	// but use the very good perl function to parse anything else.
		73	// note that we never call this function for a ascii codepoints
		74	static UV
		75	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)
		76	{
		77	if (s[0] > 0xdf \|\| s[0] < 0xc2)
		78	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
		79	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)
		80	{
		81	*clen = 2;
		82	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);
		83	}
		84	else
		85	{
		86	*clen = (STRLEN)-1;
		87	return (UV)-1;
		88	}
		89	}
		90
		91	/////////////////////////////////////////////////////////////////////////////
		92	// encoder
27		93
28	// structure used for encoding JSON	94	// structure used for encoding JSON
29	typedef struct	95	typedef struct
30	{	96	{
31	char *cur;	97	char *cur; // SvPVX (sv) + current output position
32	STRLEN len; // SvLEN (sv)
33	char *end; // SvEND (sv)	98	char *end; // SvEND (sv)
34	SV *sv;	99	SV *sv; // result scalar
35	UV flags;	100	U32 flags; // F_*
36	int max_recurse;	101	U32 indent; // indentation level
37	int indent;	102	U32 maxdepth; // max. indentation/recursion level
38	} enc_t;	103	} enc_t;
39
40	// structure used for decoding JSON
41	typedef struct
42	{
43	char *cur;
44	char *end;
45	char *err;
46	UV flags;
47	} dec_t;
48
49	static UV *
50	SvJSON (SV *sv)
51	{
52	if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash))
53	croak ("object is not of type JSON::XS");
54
55	return &SvUVX (SvRV (sv));
56	}
57
58	/////////////////////////////////////////////////////////////////////////////
59		104
60	static void	105	static void
61	need (enc_t *enc, STRLEN len)	106	need (enc_t *enc, STRLEN len)
62	{	107	{
63	if (enc->cur + len >= enc->end)	108	if (enc->cur + len >= enc->end)
64	{	109	{
65	STRLEN cur = enc->cur - SvPVX (enc->sv);	110	STRLEN cur = enc->cur - SvPVX (enc->sv);
66	SvGROW (enc->sv, cur + len + 1);	111	SvGROW (enc->sv, cur + len + 1);
67	enc->cur = SvPVX (enc->sv) + cur;	112	enc->cur = SvPVX (enc->sv) + cur;
68	enc->end = SvEND (enc->sv);	113	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
69	}	114	}
70	}	115	}
71		116
72	static void	117	static void
73	encode_ch (enc_t *enc, char ch)	118	encode_ch (enc_t *enc, char ch)
…		…
79	static void	124	static void
80	encode_str (enc_t enc, char str, STRLEN len, int is_utf8)	125	encode_str (enc_t enc, char str, STRLEN len, int is_utf8)
81	{	126	{
82	char *end = str + len;	127	char *end = str + len;
83		128
		129	need (enc, len);
		130
84	while (str < end)	131	while (str < end)
85	{	132	{
86	unsigned char ch = (unsigned char )str;	133	unsigned char ch = (unsigned char )str;
		134
87	if (ch >= 0x20 && ch < 0x80) // most common case	135	if (ch >= 0x20 && ch < 0x80) // most common case
88	{	136	{
		137	if (ch == '"') // but with slow exceptions
		138	{
		139	need (enc, len += 1);
		140	*enc->cur++ = '\\';
		141	*enc->cur++ = '"';
		142	}
		143	else if (ch == '\\')
		144	{
		145	need (enc, len += 1);
		146	*enc->cur++ = '\\';
		147	*enc->cur++ = '\\';
		148	}
		149	else
89	*enc->cur++ = ch;	150	*enc->cur++ = ch;
		151
90	str++;	152	++str;
91	}	153	}
92	else	154	else
93	{	155	{
94	STRLEN clen;	156	switch (ch)
95	UV uch;
96
97	if (is_utf8)
98	{	157	{
99	uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);	158	case '\010': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;
100	if (clen < 0)	159	case '\011': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 't'; ++str; break;
101	croak ("malformed UTF-8 character in string, cannot convert to JSON");	160	case '\012': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;
102	}	161	case '\014': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;
103	else	162	case '\015': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;
104	{
105	uch = ch;
106	clen = 1;
107	}
108		163
109	need (enc, len += 6);	164	default:
110
111	if (uch < 0xa0 \|\| enc->flags & F_ASCII)
112	{
113	if (uch > 0xFFFFUL)
114	{	165	{
		166	STRLEN clen;
		167	UV uch;
		168
		169	if (is_utf8)
		170	{
		171	//uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
		172	uch = decode_utf8 (str, end - str, &clen);
		173	if (clen == (STRLEN)-1)
		174	croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);
		175	}
		176	else
		177	{
		178	uch = ch;
115	len += 6;	179	clen = 1;
		180	}
		181
		182	if (uch > 0x10FFFFUL)
		183	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
		184
		185	if (uch < 0x80 \|\| enc->flags & F_ASCII)
		186	{
		187	if (uch > 0xFFFFUL)
		188	{
116	need (enc, len += 6);	189	need (enc, len += 11);
117	sprintf (enc->cur, "\\u%04x\\u%04x",	190	sprintf (enc->cur, "\\u%04x\\u%04x",
118	(uch - 0x10000) / 0x400 + 0xD800,	191	(int)((uch - 0x10000) / 0x400 + 0xD800),
119	(uch - 0x10000) % 0x400 + 0xDC00);	192	(int)((uch - 0x10000) % 0x400 + 0xDC00));
120	enc->cur += 12;	193	enc->cur += 12;
		194	}
		195	else
		196	{
		197	static char hexdigit [16] = "0123456789abcdef";
		198	need (enc, len += 5);
		199	*enc->cur++ = '\\';
		200	*enc->cur++ = 'u';
		201	*enc->cur++ = hexdigit [ uch >> 12 ];
		202	*enc->cur++ = hexdigit [(uch >> 8) & 15];
		203	*enc->cur++ = hexdigit [(uch >> 4) & 15];
		204	*enc->cur++ = hexdigit [(uch >> 0) & 15];
		205	}
		206
		207	str += clen;
121	}	208	}
		209	else if (is_utf8)
		210	{
		211	need (enc, len += clen);
		212	do
		213	{
		214	enc->cur++ = str++;
		215	}
		216	while (--clen);
		217	}
122	else	218	else
123	{	219	{
124	sprintf (enc->cur, "\\u%04x", uch);	220	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed
125	enc->cur += 6;	221	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
		222	++str;
		223	}
126	}	224	}
127	}	225	}
128	else if (is_utf8)
129	{
130	memcpy (enc->cur, str, clen);
131	enc->cur += clen;
132	}
133	else
134	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
135
136	str += clen;
137	}	226	}
138		227
139	--len;	228	--len;
140	}	229	}
141	}	230	}
142		231
143	#define INDENT SB \	232	static void
		233	encode_indent (enc_t *enc)
		234	{
144	if (enc->flags & F_INDENT) \	235	if (enc->flags & F_INDENT)
145	{ \	236	{
146	int i_; \	237	int spaces = enc->indent * INDENT_STEP;
147	need (enc, enc->indent); \
148	for (i_ = enc->indent * 3; i_--; )\
149	encode_ch (enc, ' '); \
150	} \
151	SE
152		238
153	#define SPACE SB need (enc, 1); encode_ch (enc, ' '); SE	239	need (enc, spaces);
154	#define NL SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, '\n'); } SE	240	memset (enc->cur, ' ', spaces);
155	#define COMMA SB \	241	enc->cur += spaces;
		242	}
		243	}
		244
		245	static void
		246	encode_space (enc_t *enc)
		247	{
		248	need (enc, 1);
156	encode_ch (enc, ','); \	249	encode_ch (enc, ' ');
		250	}
		251
		252	static void
		253	encode_nl (enc_t *enc)
		254	{
157	if (enc->flags & F_INDENT) \	255	if (enc->flags & F_INDENT)
158	NL; \	256	{
		257	need (enc, 1);
		258	encode_ch (enc, '\n');
		259	}
		260	}
		261
		262	static void
		263	encode_comma (enc_t *enc)
		264	{
		265	encode_ch (enc, ',');
		266
		267	if (enc->flags & F_INDENT)
		268	encode_nl (enc);
159	else if (enc->flags & F_SPACE_AFTER) \	269	else if (enc->flags & F_SPACE_AFTER)
160	SPACE; \	270	encode_space (enc);
161	SE	271	}
162		272
163	static void encode_sv (enc_t enc, SV sv);	273	static void encode_sv (enc_t enc, SV sv);
164		274
165	static void	275	static void
166	encode_av (enc_t enc, AV av)	276	encode_av (enc_t enc, AV av)
167	{	277	{
168	int i, len = av_len (av);	278	int i, len = av_len (av);
169		279
170	encode_ch (enc, '['); NL;	280	if (enc->indent >= enc->maxdepth)
		281	croak ("data structure too deep (hit recursion limit)");
		282
		283	encode_ch (enc, '['); encode_nl (enc);
171	++enc->indent;	284	++enc->indent;
172		285
173	for (i = 0; i <= len; ++i)	286	for (i = 0; i <= len; ++i)
174	{	287	{
175	INDENT;	288	encode_indent (enc);
176	encode_sv (enc, *av_fetch (av, i, 0));	289	encode_sv (enc, *av_fetch (av, i, 0));
177		290
178	if (i < len)	291	if (i < len)
179	COMMA;	292	encode_comma (enc);
180	}	293	}
181		294
182	NL;	295	encode_nl (enc);
183		296
184	--enc->indent;	297	--enc->indent;
185	INDENT; encode_ch (enc, ']');	298	encode_indent (enc); encode_ch (enc, ']');
186	}	299	}
187		300
188	static void	301	static void
189	encode_he (enc_t enc, HE he)	302	encode_he (enc_t enc, HE he)
190	{	303	{
…		…
192		305
193	if (HeKLEN (he) == HEf_SVKEY)	306	if (HeKLEN (he) == HEf_SVKEY)
194	{	307	{
195	SV *sv = HeSVKEY (he);	308	SV *sv = HeSVKEY (he);
196	STRLEN len;	309	STRLEN len;
		310	char *str;
		311
		312	SvGETMAGIC (sv);
197	char *str = SvPV (sv, len);	313	str = SvPV (sv, len);
198		314
199	encode_str (enc, str, len, SvUTF8 (sv));	315	encode_str (enc, str, len, SvUTF8 (sv));
200	}	316	}
201	else	317	else
202	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	318	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
203		319
204	encode_ch (enc, '"');	320	encode_ch (enc, '"');
205		321
206	if (enc->flags & F_SPACE_BEFORE) SPACE;	322	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);
207	encode_ch (enc, ':');	323	encode_ch (enc, ':');
208	if (enc->flags & F_SPACE_AFTER ) SPACE;	324	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);
209	encode_sv (enc, HeVAL (he));	325	encode_sv (enc, HeVAL (he));
210	}	326	}
211		327
212	// compare hash entries, used when all keys are bytestrings	328	// compare hash entries, used when all keys are bytestrings
213	static int	329	static int
…		…
219	HE b = (HE **)b_;	335	HE b = (HE **)b_;
220		336
221	STRLEN la = HeKLEN (a);	337	STRLEN la = HeKLEN (a);
222	STRLEN lb = HeKLEN (b);	338	STRLEN lb = HeKLEN (b);
223		339
224	if (!(cmp == memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))	340	if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))
225	cmp = la < lb ? -1 : la == lb ? 0 : 1;	341	cmp = la - lb;
226		342
227	return cmp;	343	return cmp;
228	}	344	}
229		345
230	// compare hash entries, used when some keys are sv's or utf-x	346	// compare hash entries, used when some keys are sv's or utf-x
…		…
237	static void	353	static void
238	encode_hv (enc_t enc, HV hv)	354	encode_hv (enc_t enc, HV hv)
239	{	355	{
240	int count, i;	356	int count, i;
241		357
		358	if (enc->indent >= enc->maxdepth)
		359	croak ("data structure too deep (hit recursion limit)");
		360
242	encode_ch (enc, '{'); NL; ++enc->indent;	361	encode_ch (enc, '{'); encode_nl (enc); ++enc->indent;
243		362
244	if ((count = hv_iterinit (hv)))	363	if ((count = hv_iterinit (hv)))
245	{	364	{
246	// for canonical output we have to sort by keys first	365	// for canonical output we have to sort by keys first
247	// actually, this is mostly due to the stupid so-called	366	// actually, this is mostly due to the stupid so-called
248	// security workaround added somewhere in 5.8.x.	367	// security workaround added somewhere in 5.8.x.
249	// that randomises hash orderings	368	// that randomises hash orderings
250	if (enc->flags & F_CANONICAL)	369	if (enc->flags & F_CANONICAL)
251	{	370	{
252	HE he, hes [count];	371	HE he, hes [count]; // if your compiler dies here, you need to enable C99 mode
253	int fast = 1;	372	int fast = 1;
254		373
255	i = 0;	374	i = 0;
256	while ((he = hv_iternext (hv)))	375	while ((he = hv_iternext (hv)))
257	{	376	{
…		…
264		383
265	if (fast)	384	if (fast)
266	qsort (hes, count, sizeof (HE *), he_cmp_fast);	385	qsort (hes, count, sizeof (HE *), he_cmp_fast);
267	else	386	else
268	{	387	{
269	// hack to disable "use bytes"	388	// hack to forcefully disable "use bytes"
270	COP *oldcop = PL_curcop, cop;	389	COP cop = *PL_curcop;
271	cop.op_private = 0;	390	cop.op_private = 0;
		391
		392	ENTER;
		393	SAVETMPS;
		394
		395	SAVEVPTR (PL_curcop);
272	PL_curcop = &cop;	396	PL_curcop = &cop;
273		397
274	SAVETMPS;
275	qsort (hes, count, sizeof (HE *), he_cmp_slow);	398	qsort (hes, count, sizeof (HE *), he_cmp_slow);
		399
276	FREETMPS;	400	FREETMPS;
277		401	LEAVE;
278	PL_curcop = oldcop;
279	}	402	}
280		403
281	for (i = 0; i < count; ++i)	404	for (i = 0; i < count; ++i)
282	{	405	{
283	INDENT;	406	encode_indent (enc);
284	encode_he (enc, hes [i]);	407	encode_he (enc, hes [i]);
285		408
286	if (i < count - 1)	409	if (i < count - 1)
287	COMMA;	410	encode_comma (enc);
288	}	411	}
289		412
290	NL;	413	encode_nl (enc);
291	}	414	}
292	else	415	else
293	{	416	{
294	SV *sv;
295	HE *he = hv_iternext (hv);	417	HE *he = hv_iternext (hv);
296		418
297	for (;;)	419	for (;;)
298	{	420	{
299	INDENT;	421	encode_indent (enc);
300	encode_he (enc, he);	422	encode_he (enc, he);
301		423
302	if (!(he = hv_iternext (hv)))	424	if (!(he = hv_iternext (hv)))
303	break;	425	break;
304		426
305	COMMA;	427	encode_comma (enc);
306	}	428	}
307		429
308	NL;	430	encode_nl (enc);
309	}	431	}
310	}	432	}
311		433
312	--enc->indent; INDENT; encode_ch (enc, '}');	434	--enc->indent; encode_indent (enc); encode_ch (enc, '}');
		435	}
		436
		437	// encode objects, arrays and special \0=false and \1=true values.
		438	static void
		439	encode_rv (enc_t enc, SV sv)
		440	{
		441	svtype svt;
		442
		443	SvGETMAGIC (sv);
		444	svt = SvTYPE (sv);
		445
		446	if (svt == SVt_PVHV)
		447	encode_hv (enc, (HV *)sv);
		448	else if (svt == SVt_PVAV)
		449	encode_av (enc, (AV *)sv);
		450	else if (svt < SVt_PVAV)
		451	{
		452	if (SvNIOK (sv) && SvIV (sv) == 0)
		453	encode_str (enc, "false", 5, 0);
		454	else if (SvNIOK (sv) && SvIV (sv) == 1)
		455	encode_str (enc, "true", 4, 0);
		456	else
		457	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
		458	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		459	}
		460	else
		461	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
		462	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
313	}	463	}
314		464
315	static void	465	static void
316	encode_sv (enc_t enc, SV sv)	466	encode_sv (enc_t enc, SV sv)
317	{	467	{
		468	SvGETMAGIC (sv);
		469
318	if (SvPOKp (sv))	470	if (SvPOKp (sv))
319	{	471	{
320	STRLEN len;	472	STRLEN len;
321	char *str = SvPV (sv, len);	473	char *str = SvPV (sv, len);
322	encode_ch (enc, '"');	474	encode_ch (enc, '"');
…		…
336	SvIsUV(sv)	488	SvIsUV(sv)
337	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))	489	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))
338	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));	490	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));
339	}	491	}
340	else if (SvROK (sv))	492	else if (SvROK (sv))
341	{	493	encode_rv (enc, SvRV (sv));
342	if (!--enc->max_recurse)
343	croak ("data structure too deep (hit recursion limit)");
344
345	sv = SvRV (sv);
346
347	switch (SvTYPE (sv))
348	{
349	case SVt_PVAV: encode_av (enc, (AV *)sv); break;
350	case SVt_PVHV: encode_hv (enc, (HV *)sv); break;
351
352	default:
353	croak ("JSON can only represent references to arrays or hashes");
354	}
355	}
356	else if (!SvOK (sv))	494	else if (!SvOK (sv))
357	encode_str (enc, "null", 4, 0);	495	encode_str (enc, "null", 4, 0);
358	else	496	else
359	croak ("encountered perl type that JSON cannot handle");	497	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
		498	SvPV_nolen (sv), SvFLAGS (sv));
360	}	499	}
361		500
362	static SV *	501	static SV *
363	encode_json (SV *scalar, UV flags)	502	encode_json (SV *scalar, U32 flags)
364	{	503	{
		504	enc_t enc;
		505
365	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))	506	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))
366	croak ("hash- or arraref required (not a simple scalar, use allow_nonref to allow this)");	507	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
367		508
368	enc_t enc;
369	enc.flags = flags;	509	enc.flags = flags;
370	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	510	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
371	enc.cur = SvPVX (enc.sv);	511	enc.cur = SvPVX (enc.sv);
372	enc.end = SvEND (enc.sv);	512	enc.end = SvEND (enc.sv);
373	enc.max_recurse = 0;
374	enc.indent = 0;	513	enc.indent = 0;
		514	enc.maxdepth = DEC_DEPTH (flags);
375		515
376	SvPOK_only (enc.sv);	516	SvPOK_only (enc.sv);
377	encode_sv (&enc, scalar);	517	encode_sv (&enc, scalar);
378		518
379	if (!(flags & (F_ASCII \| F_UTF8)))	519	if (!(flags & (F_ASCII \| F_UTF8)))
380	SvUTF8_on (enc.sv);	520	SvUTF8_on (enc.sv);
381		521
382	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	522	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
		523	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
		524
		525	if (enc.flags & F_SHRINK)
		526	shrink (enc.sv);
		527
383	return enc.sv;	528	return enc.sv;
384	}	529	}
385		530
386	/////////////////////////////////////////////////////////////////////////////	531	/////////////////////////////////////////////////////////////////////////////
		532	// decoder
387		533
388	#define WS \	534	// structure used for decoding JSON
		535	typedef struct
		536	{
		537	char *cur; // current parser pointer
		538	char *end; // end of input string
		539	const char *err; // parse error, if != 0
		540	U32 flags; // F_*
		541	U32 depth; // recursion depth
		542	U32 maxdepth; // recursion depth limit
		543	} dec_t;
		544
		545	static void
		546	decode_ws (dec_t *dec)
		547	{
389	for (;;) \	548	for (;;)
390	{ \	549	{
391	char ch = *dec->cur; \	550	char ch = *dec->cur;
		551
392	if (ch > 0x20 \	552	if (ch > 0x20
393	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) \	553	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09))
394	break; \	554	break;
		555
395	++dec->cur; \	556	++dec->cur;
396	}	557	}
		558	}
397		559
398	#define ERR(reason) SB dec->err = reason; goto fail; SE	560	#define ERR(reason) SB dec->err = reason; goto fail; SE
		561
399	#define EXPECT_CH(ch) SB \	562	#define EXPECT_CH(ch) SB \
400	if (*dec->cur != ch) \	563	if (*dec->cur != ch) \
401	ERR (# ch " expected"); \	564	ERR (# ch " expected"); \
402	++dec->cur; \	565	++dec->cur; \
403	SE	566	SE
404		567
		568	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")
		569	#define DEC_DEC_DEPTH --dec->depth
		570
405	static SV decode_sv (dec_t dec);	571	static SV decode_sv (dec_t dec);
406
407	#define APPEND_CH(ch) SB \
408	SvGROW (sv, cur + 1 + 1); \
409	SvPVX (sv)[cur++] = (ch); \
410	SE
411		572
412	static signed char decode_hexdigit[256];	573	static signed char decode_hexdigit[256];
413		574
414	static UV	575	static UV
415	decode_4hex (dec_t *dec)	576	decode_4hex (dec_t *dec)
416	{	577	{
417	signed char d1, d2, d3, d4;	578	signed char d1, d2, d3, d4;
		579	unsigned char cur = (unsigned char )dec->cur;
418		580
419	d1 = decode_hexdigit [((unsigned char *)dec->cur) [0]];
420	if (d1 < 0) ERR ("four hexadecimal digits expected");	581	d1 = decode_hexdigit [cur [0]]; if (d1 < 0) ERR ("four hexadecimal digits expected");
421	d2 = decode_hexdigit [((unsigned char *)dec->cur) [1]];
422	if (d2 < 0) ERR ("four hexadecimal digits expected");	582	d2 = decode_hexdigit [cur [1]]; if (d2 < 0) ERR ("four hexadecimal digits expected");
423	d3 = decode_hexdigit [((unsigned char *)dec->cur) [2]];
424	if (d3 < 0) ERR ("four hexadecimal digits expected");	583	d3 = decode_hexdigit [cur [2]]; if (d3 < 0) ERR ("four hexadecimal digits expected");
425	d4 = decode_hexdigit [((unsigned char *)dec->cur) [3]];
426	if (d4 < 0) ERR ("four hexadecimal digits expected");	584	d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected");
427		585
428	dec->cur += 4;	586	dec->cur += 4;
429		587
430	return ((UV)d1) << 12	588	return ((UV)d1) << 12
431	\| ((UV)d2) << 8	589	\| ((UV)d2) << 8
…		…
437	}	595	}
438		596
439	static SV *	597	static SV *
440	decode_str (dec_t *dec)	598	decode_str (dec_t *dec)
441	{	599	{
442	SV *sv = NEWSV (0,2);	600	SV *sv = 0;
443	STRLEN cur = 0;
444	int utf8 = 0;	601	int utf8 = 0;
445		602
446	for (;;)	603	do
447	{	604	{
448	unsigned char ch = (unsigned char )dec->cur;	605	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];
		606	char *cur = buf;
449		607
450	if (ch == '"')	608	do
451	break;
452	else if (ch == '\\')
453	{	609	{
454	switch (*++dec->cur)	610	unsigned char ch = (unsigned char )dec->cur++;
		611
		612	if (ch == '"')
455	{	613	{
456	case '\\':	614	--dec->cur;
457	case '/':	615	break;
458	case '"': APPEND_CH (*dec->cur++); break;	616	}
459		617	else if (ch == '\\')
460	case 'b': APPEND_CH ('\010'); ++dec->cur; break;	618	{
461	case 't': APPEND_CH ('\011'); ++dec->cur; break;	619	switch (*dec->cur)
462	case 'n': APPEND_CH ('\012'); ++dec->cur; break;
463	case 'f': APPEND_CH ('\014'); ++dec->cur; break;
464	case 'r': APPEND_CH ('\015'); ++dec->cur; break;
465
466	case 'u':
467	{	620	{
468	UV lo, hi;	621	case '\\':
469	++dec->cur;	622	case '/':
		623	case '"': cur++ = dec->cur++; break;
470		624
471	hi = decode_4hex (dec);	625	case 'b': ++dec->cur; *cur++ = '\010'; break;
472	if (hi == (UV)-1)	626	case 't': ++dec->cur; *cur++ = '\011'; break;
473	goto fail;	627	case 'n': ++dec->cur; *cur++ = '\012'; break;
		628	case 'f': ++dec->cur; *cur++ = '\014'; break;
		629	case 'r': ++dec->cur; *cur++ = '\015'; break;
474		630
475	// possibly a surrogate pair	631	case 'u':
476	if (hi >= 0xd800 && hi < 0xdc00)
477	{	632	{
478	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')	633	UV lo, hi;
479	ERR ("illegal surrogate character");
480
481	dec->cur += 2;	634	++dec->cur;
482		635
483	lo = decode_4hex (dec);	636	hi = decode_4hex (dec);
484	if (lo == (UV)-1)	637	if (hi == (UV)-1)
485	goto fail;	638	goto fail;
486		639
		640	// possibly a surrogate pair
		641	if (hi >= 0xd800)
		642	if (hi < 0xdc00)
		643	{
		644	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')
		645	ERR ("missing low surrogate character in surrogate pair");
		646
		647	dec->cur += 2;
		648
		649	lo = decode_4hex (dec);
		650	if (lo == (UV)-1)
		651	goto fail;
		652
487	if (lo < 0xdc00 \|\| lo >= 0xe000)	653	if (lo < 0xdc00 \|\| lo >= 0xe000)
488	ERR ("surrogate pair expected");	654	ERR ("surrogate pair expected");
489		655
490	hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000;	656	hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000;
		657	}
		658	else if (hi < 0xe000)
		659	ERR ("missing high surrogate character in surrogate pair");
		660
		661	if (hi >= 0x80)
		662	{
		663	utf8 = 1;
		664
		665	cur = (char *)uvuni_to_utf8_flags (cur, hi, 0);
		666	}
		667	else
		668	*cur++ = hi;
491	}	669	}
492	else if (lo >= 0xdc00 && lo < 0xe000)
493	ERR ("illegal surrogate character");
494
495	if (hi >= 0x80)
496	{	670	break;
497	utf8 = 1;
498		671
499	SvGROW (sv, cur + 4 + 1); // at most 4 bytes for 21 bits
500	cur = (char *)uvuni_to_utf8_flags (SvPVX (sv) + cur, hi, 0) - SvPVX (sv);
501	}
502	else	672	default:
503	APPEND_CH (hi);	673	--dec->cur;
		674	ERR ("illegal backslash escape sequence in string");
504	}	675	}
		676	}
		677	else if (ch >= 0x20 && ch <= 0x7f)
		678	*cur++ = ch;
		679	else if (ch >= 0x80)
		680	{
		681	STRLEN clen;
		682	UV uch;
		683
		684	--dec->cur;
		685
		686	uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen);
		687	if (clen == (STRLEN)-1)
		688	ERR ("malformed UTF-8 character in JSON string");
		689
		690	do
		691	cur++ = dec->cur++;
		692	while (--clen);
		693
		694	utf8 = 1;
		695	}
		696	else
		697	{
		698	--dec->cur;
		699
		700	if (!ch)
		701	ERR ("unexpected end of string while parsing JSON string");
505	break;	702	else
		703	ERR ("invalid character encountered while parsing JSON string");
506	}	704	}
507	}	705	}
508	else if (ch >= 0x20 && ch <= 0x7f)	706	while (cur < buf + SHORT_STRING_LEN);
509	APPEND_CH (*dec->cur++);	707
510	else if (ch >= 0x80)	708	{
		709	STRLEN len = cur - buf;
		710
		711	if (sv)
511	{	712	{
512	STRLEN clen;	713	SvGROW (sv, SvCUR (sv) + len + 1);
513	UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY);	714	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
514	if (clen < 0)	715	SvCUR_set (sv, SvCUR (sv) + len);
515	ERR ("malformed UTF-8 character in string, cannot convert to JSON");
516
517	SvGROW (sv, cur + clen + 1); // at most 4 bytes for 21 bits
518	memcpy (SvPVX (sv) + cur, dec->cur, clen);
519	dec->cur += clen;
520	}	716	}
521	else	717	else
522	ERR ("invalid character encountered");	718	sv = newSVpvn (buf, len);
523	}	719	}
		720	}
		721	while (*dec->cur != '"');
524		722
525	++dec->cur;	723	++dec->cur;
526		724
		725	if (sv)
		726	{
527	SvPOK_only (sv);	727	SvPOK_only (sv);
528
529	SvCUR_set (sv, cur);
530	*SvEND (sv) = 0;	728	*SvEND (sv) = 0;
531		729
532	if (utf8)	730	if (utf8)
533	SvUTF8_on (sv);	731	SvUTF8_on (sv);
		732	}
		733	else
		734	sv = newSVpvn ("", 0);
534		735
535	return sv;	736	return sv;
536		737
537	fail:	738	fail:
538	SvREFCNT_dec (sv);
539	return 0;	739	return 0;
540	}	740	}
541		741
542	static SV *	742	static SV *
543	decode_num (dec_t *dec)	743	decode_num (dec_t *dec)
…		…
553	{	753	{
554	++dec->cur;	754	++dec->cur;
555	if (dec->cur >= '0' && dec->cur <= '9')	755	if (dec->cur >= '0' && dec->cur <= '9')
556	ERR ("malformed number (leading zero must not be followed by another digit)");	756	ERR ("malformed number (leading zero must not be followed by another digit)");
557	}	757	}
558		758	else if (dec->cur < '0' \|\| dec->cur > '9')
559	// int	759	ERR ("malformed number (no digits after initial minus)");
		760	else
		761	do
		762	{
		763	++dec->cur;
		764	}
560	while (dec->cur >= '0' && dec->cur <= '9')	765	while (dec->cur >= '0' && dec->cur <= '9');
561	++dec->cur;
562		766
563	// [frac]	767	// [frac]
564	if (*dec->cur == '.')	768	if (*dec->cur == '.')
565	{	769	{
566	is_nv = 1;	770	++dec->cur;
		771
		772	if (dec->cur < '0' \|\| dec->cur > '9')
		773	ERR ("malformed number (no digits after decimal point)");
567		774
568	do	775	do
569	{	776	{
570	++dec->cur;	777	++dec->cur;
571	}	778	}
572	while (dec->cur >= '0' && dec->cur <= '9');	779	while (dec->cur >= '0' && dec->cur <= '9');
		780
		781	is_nv = 1;
573	}	782	}
574		783
575	// [exp]	784	// [exp]
576	if (dec->cur == 'e' \|\| dec->cur == 'E')	785	if (dec->cur == 'e' \|\| dec->cur == 'E')
577	{	786	{
578	is_nv = 1;
579
580	++dec->cur;	787	++dec->cur;
		788
581	if (dec->cur == '-' \|\| dec->cur == '+')	789	if (dec->cur == '-' \|\| dec->cur == '+')
582	++dec->cur;	790	++dec->cur;
583		791
		792	if (dec->cur < '0' \|\| dec->cur > '9')
		793	ERR ("malformed number (no digits after exp sign)");
		794
		795	do
		796	{
		797	++dec->cur;
		798	}
584	while (dec->cur >= '0' && dec->cur <= '9')	799	while (dec->cur >= '0' && dec->cur <= '9');
585	++dec->cur;	800
		801	is_nv = 1;
586	}	802	}
587		803
588	if (!is_nv)	804	if (!is_nv)
589	{	805	{
590	UV uv;	806	UV uv;
…		…
608	static SV *	824	static SV *
609	decode_av (dec_t *dec)	825	decode_av (dec_t *dec)
610	{	826	{
611	AV *av = newAV ();	827	AV *av = newAV ();
612		828
		829	DEC_INC_DEPTH;
		830	decode_ws (dec);
		831
		832	if (*dec->cur == ']')
		833	++dec->cur;
		834	else
613	for (;;)	835	for (;;)
614	{	836	{
615	SV *value;	837	SV *value;
616		838
617	value = decode_sv (dec);	839	value = decode_sv (dec);
618	if (!value)	840	if (!value)
619	goto fail;	841	goto fail;
620		842
621	av_push (av, value);	843	av_push (av, value);
622		844
623	WS;	845	decode_ws (dec);
624		846
625	if (*dec->cur == ']')	847	if (*dec->cur == ']')
626	{	848	{
627	++dec->cur;	849	++dec->cur;
628	break;	850	break;
		851	}
629	}	852
630
631	if (*dec->cur != ',')	853	if (*dec->cur != ',')
632	ERR (", or ] expected while parsing array");	854	ERR (", or ] expected while parsing array");
633		855
634	++dec->cur;	856	++dec->cur;
635	}	857	}
636		858
		859	DEC_DEC_DEPTH;
637	return newRV_noinc ((SV *)av);	860	return newRV_noinc ((SV *)av);
638		861
639	fail:	862	fail:
640	SvREFCNT_dec (av);	863	SvREFCNT_dec (av);
		864	DEC_DEC_DEPTH;
641	return 0;	865	return 0;
642	}	866	}
643		867
644	static SV *	868	static SV *
645	decode_hv (dec_t *dec)	869	decode_hv (dec_t *dec)
646	{	870	{
647	HV *hv = newHV ();	871	HV *hv = newHV ();
648		872
		873	DEC_INC_DEPTH;
		874	decode_ws (dec);
		875
		876	if (*dec->cur == '}')
		877	++dec->cur;
		878	else
649	for (;;)	879	for (;;)
650	{	880	{
651	SV key, value;	881	SV key, value;
652		882
653	WS; EXPECT_CH ('"');	883	decode_ws (dec); EXPECT_CH ('"');
654		884
655	key = decode_str (dec);	885	key = decode_str (dec);
656	if (!key)	886	if (!key)
657	goto fail;
658
659	WS; EXPECT_CH (':');
660
661	value = decode_sv (dec);
662	if (!value)
663	{
664	SvREFCNT_dec (key);
665	goto fail;	887	goto fail;
		888
		889	decode_ws (dec); EXPECT_CH (':');
		890
		891	value = decode_sv (dec);
		892	if (!value)
		893	{
		894	SvREFCNT_dec (key);
		895	goto fail;
666	}	896	}
667		897
668	//TODO: optimise
669	hv_store_ent (hv, key, value, 0);	898	hv_store_ent (hv, key, value, 0);
		899	SvREFCNT_dec (key);
670		900
671	WS;	901	decode_ws (dec);
672		902
673	if (*dec->cur == '}')	903	if (*dec->cur == '}')
674	{	904	{
675	++dec->cur;	905	++dec->cur;
676	break;	906	break;
677	}	907	}
678		908
679	if (*dec->cur != ',')	909	if (*dec->cur != ',')
680	ERR (", or } expected while parsing object/hash");	910	ERR (", or } expected while parsing object/hash");
681		911
682	++dec->cur;	912	++dec->cur;
683	}	913	}
684		914
		915	DEC_DEC_DEPTH;
685	return newRV_noinc ((SV *)hv);	916	return newRV_noinc ((SV *)hv);
686		917
687	fail:	918	fail:
688	SvREFCNT_dec (hv);	919	SvREFCNT_dec (hv);
		920	DEC_DEC_DEPTH;
689	return 0;	921	return 0;
690	}	922	}
691		923
692	static SV *	924	static SV *
693	decode_sv (dec_t *dec)	925	decode_sv (dec_t *dec)
694	{	926	{
695	WS;	927	decode_ws (dec);
696	switch (*dec->cur)	928	switch (*dec->cur)
697	{	929	{
698	case '"': ++dec->cur; return decode_str (dec);	930	case '"': ++dec->cur; return decode_str (dec);
699	case '[': ++dec->cur; return decode_av (dec);	931	case '[': ++dec->cur; return decode_av (dec);
700	case '{': ++dec->cur; return decode_hv (dec);	932	case '{': ++dec->cur; return decode_hv (dec);
…		…
728		960
729	case 'n':	961	case 'n':
730	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	962	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
731	{	963	{
732	dec->cur += 4;	964	dec->cur += 4;
733	return newSViv (1);	965	return newSVsv (&PL_sv_undef);
734	}	966	}
735	else	967	else
736	ERR ("'null' expected");	968	ERR ("'null' expected");
737		969
738	break;	970	break;
739		971
740	default:	972	default:
741	ERR ("malformed json string");	973	ERR ("malformed JSON string, neither array, object, number, string or atom");
742	break;	974	break;
743	}	975	}
744		976
745	fail:	977	fail:
746	return 0;	978	return 0;
747	}	979	}
748		980
749	static SV *	981	static SV *
750	decode_json (SV *string, UV flags)	982	decode_json (SV *string, U32 flags)
751	{	983	{
		984	dec_t dec;
752	SV *sv;	985	SV *sv;
753		986
		987	SvGETMAGIC (string);
		988	SvUPGRADE (string, SVt_PV);
		989
754	if (!(flags & F_UTF8))	990	if (flags & F_UTF8)
		991	sv_utf8_downgrade (string, 0);
		992	else
755	sv_utf8_upgrade (string);	993	sv_utf8_upgrade (string);
756		994
757	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	995	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
758		996
759	dec_t dec;
760	dec.flags = flags;	997	dec.flags = flags;
761	dec.cur = SvPVX (string);	998	dec.cur = SvPVX (string);
762	dec.end = SvEND (string);	999	dec.end = SvEND (string);
763	dec.err = 0;	1000	dec.err = 0;
		1001	dec.depth = 0;
		1002	dec.maxdepth = DEC_DEPTH (dec.flags);
764		1003
765	*dec.end = 1; // invalid anywhere	1004	*dec.end = 0; // this should basically be a nop, too, but make sure its there
766	sv = decode_sv (&dec);	1005	sv = decode_sv (&dec);
767	*dec.end = 0;
768		1006
769	if (!sv)	1007	if (!sv)
770	{	1008	{
		1009	IV offset = dec.flags & F_UTF8
		1010	? dec.cur - SvPVX (string)
771	IV offset = utf8_distance (dec.cur, SvPVX (string));	1011	: utf8_distance (dec.cur, SvPVX (string));
772	SV *uni = sv_newmortal ();	1012	SV *uni = sv_newmortal ();
773		1013
		1014	// horrible hack to silence warning inside pv_uni_display
		1015	COP cop = *PL_curcop;
		1016	cop.cop_warnings = pWARN_NONE;
		1017	ENTER;
		1018	SAVEVPTR (PL_curcop);
		1019	PL_curcop = &cop;
774	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1020	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
		1021	LEAVE;
		1022
775	croak ("%s, at character %d (%s)",	1023	croak ("%s, at character offset %d [\"%s\"]",
776	dec.err,	1024	dec.err,
777	(int)offset,	1025	(int)offset,
778	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1026	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
779	}	1027	}
780		1028
781	sv = sv_2mortal (sv);	1029	sv = sv_2mortal (sv);
782		1030
783	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))	1031	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))
784	croak ("JSON object or array expected (but number, string, true, false or null found, use allow_nonref to allow this)");	1032	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
785		1033
786	return sv;	1034	return sv;
787	}	1035	}
788		1036
		1037	/////////////////////////////////////////////////////////////////////////////
		1038	// XS interface functions
		1039
789	MODULE = JSON::XS PACKAGE = JSON::XS	1040	MODULE = JSON::XS PACKAGE = JSON::XS
790		1041
791	BOOT:	1042	BOOT:
792	{	1043	{
793	int i;	1044	int i;
794		1045
795	memset (decode_hexdigit, 0xff, 256);	1046	memset (decode_hexdigit, 0xff, 256);
		1047
796	for (i = 10; i--; )	1048	for (i = 0; i < 256; ++i)
797	decode_hexdigit ['0' + i] = i;	1049	decode_hexdigit [i] =
798		1050	i >= '0' && i <= '9' ? i - '0'
799	for (i = 6; --i; )	1051	: i >= 'a' && i <= 'f' ? i - 'a' + 10
800	{	1052	: i >= 'A' && i <= 'F' ? i - 'A' + 10
801	decode_hexdigit ['a' + i] = 10 + i;	1053	: -1;
802	decode_hexdigit ['A' + i] = 10 + i;
803	}
804		1054
805	json_stash = gv_stashpv ("JSON::XS", 1);	1055	json_stash = gv_stashpv ("JSON::XS", 1);
806	}	1056	}
		1057
		1058	PROTOTYPES: DISABLE
807		1059
808	SV new (char dummy)	1060	SV new (char dummy)
809	CODE:	1061	CODE:
810	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);	1062	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);
811	OUTPUT:	1063	OUTPUT:
812	RETVAL	1064	RETVAL
813		1065
814	SV ascii (SV self, int enable)	1066	SV ascii (SV self, int enable = 1)
815	ALIAS:	1067	ALIAS:
816	ascii = F_ASCII	1068	ascii = F_ASCII
817	utf8 = F_UTF8	1069	utf8 = F_UTF8
818	indent = F_INDENT	1070	indent = F_INDENT
819	canonical = F_CANONICAL	1071	canonical = F_CANONICAL
820	space_before = F_SPACE_BEFORE	1072	space_before = F_SPACE_BEFORE
821	space_after = F_SPACE_AFTER	1073	space_after = F_SPACE_AFTER
822	json_rpc = F_JSON_RPC
823	pretty = F_PRETTY	1074	pretty = F_PRETTY
824	allow_nonref = F_ALLOW_NONREF	1075	allow_nonref = F_ALLOW_NONREF
		1076	shrink = F_SHRINK
825	CODE:	1077	CODE:
826	{	1078	{
827	UV *uv = SvJSON (self);	1079	UV *uv = SvJSON (self);
828	if (enable)	1080	if (enable)
829	*uv \|= ix;	1081	*uv \|= ix;
…		…
833	RETVAL = newSVsv (self);	1085	RETVAL = newSVsv (self);
834	}	1086	}
835	OUTPUT:	1087	OUTPUT:
836	RETVAL	1088	RETVAL
837		1089
		1090	SV max_depth (SV self, UV max_depth = 0x80000000UL)
		1091	CODE:
		1092	{
		1093	UV *uv = SvJSON (self);
		1094	UV log2 = 0;
		1095
		1096	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
		1097
		1098	while ((1UL << log2) < max_depth)
		1099	++log2;
		1100
		1101	uv = uv & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
		1102
		1103	RETVAL = newSVsv (self);
		1104	}
		1105	OUTPUT:
		1106	RETVAL
		1107
838	void encode (SV self, SV scalar)	1108	void encode (SV self, SV scalar)
839	PPCODE:	1109	PPCODE:
840	XPUSHs (encode_json (scalar, *SvJSON (self)));	1110	XPUSHs (encode_json (scalar, *SvJSON (self)));
841		1111
842	void decode (SV self, SV jsonstr)	1112	void decode (SV self, SV jsonstr)
843	PPCODE:	1113	PPCODE:
844	XPUSHs (decode_json (jsonstr, *SvJSON (self)));	1114	XPUSHs (decode_json (jsonstr, *SvJSON (self)));
845		1115
		1116	PROTOTYPES: ENABLE
		1117
846	void to_json (SV *scalar)	1118	void to_json (SV *scalar)
		1119	ALIAS:
		1120	objToJson = 0
847	PPCODE:	1121	PPCODE:
848	XPUSHs (encode_json (scalar, F_UTF8));	1122	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));
849		1123
850	void from_json (SV *jsonstr)	1124	void from_json (SV *jsonstr)
		1125	ALIAS:
		1126	jsonToObj = 0
851	PPCODE:	1127	PPCODE:
852	XPUSHs (decode_json (jsonstr, F_UTF8));	1128	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8));
853		1129

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Comparing JSON-XS/XS.xs (file contents): Revision 1.3 by root, Thu Mar 22 18:10:29 2007 UTC vs. Revision 1.29 by root, Wed May 9 15:34:04 2007 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.3 by root, Thu Mar 22 18:10:29 2007 UTC vs.
Revision 1.29 by root, Wed May 9 15:34:04 2007 UTC