[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 1.24 by root, Tue Apr 3 23:59:04 2007 UTC

…		…
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		8
9	#define F_ASCII 0x00000001	9	#define F_ASCII 0x00000001UL
10	#define F_UTF8 0x00000002	10	#define F_UTF8 0x00000002UL
11	#define F_INDENT 0x00000004	11	#define F_INDENT 0x00000004UL
12	#define F_CANONICAL 0x00000008	12	#define F_CANONICAL 0x00000008UL
13	#define F_SPACE_BEFORE 0x00000010	13	#define F_SPACE_BEFORE 0x00000010UL
14	#define F_SPACE_AFTER 0x00000020	14	#define F_SPACE_AFTER 0x00000020UL
		15	#define F_ALLOW_NONREF 0x00000080UL
15	#define F_JSON_RPC 0x00000040	16	#define F_SHRINK 0x00000100UL
		17	#define F_MAXDEPTH 0xf8000000UL
		18	#define S_MAXDEPTH 27
16		19
17	#define F_DEFAULT 0	20	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
		21
		22	// F_SELFCONVERT? <=> to_json/toJson
		23	// F_BLESSED? <=> { $__class__$ => }
		24
		25	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
		26	#define F_DEFAULT (9UL << S_MAXDEPTH)
18		27
19	#define INIT_SIZE 32 // initial scalar size to be allocated	28	#define INIT_SIZE 32 // initial scalar size to be allocated
		29	#define INDENT_STEP 3 // spaces per indentation level
		30
		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
20		33
21	#define SB do {	34	#define SB do {
22	#define SE } while (0)	35	#define SE } while (0)
23		36
24	static HV *json_stash;	37	static HV *json_stash; // JSON::XS::
		38
		39	/////////////////////////////////////////////////////////////////////////////
		40	// utility functions
		41
		42	static UV *
		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)
		53	{
		54	sv_utf8_downgrade (sv, 1);
		55	if (SvLEN (sv) > SvCUR (sv) + 1)
		56	{
		57	#ifdef SvPV_shrink_to_cur
		58	SvPV_shrink_to_cur (sv);
		59	#elif defined (SvPV_renew)
		60	SvPV_renew (sv, SvCUR (sv) + 1);
		61	#endif
		62	}
		63	}
		64
		65	// decode an utf-8 character and return it, or (UV)-1 in
		66	// case of an error.
		67	// we special-case "safe" characters from U+80 .. U+7FF,
		68	// but use the very good perl function to parse anything else.
		69	// note that we never call this function for a ascii codepoints
		70	static UV
		71	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)
		72	{
		73	if (s[0] > 0xdf \|\| s[0] < 0xc2)
		74	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
		75	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)
		76	{
		77	*clen = 2;
		78	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);
		79	}
		80	else
		81	{
		82	*clen = (STRLEN)-1;
		83	return (UV)-1;
		84	}
		85	}
		86
		87	/////////////////////////////////////////////////////////////////////////////
		88	// encoder
25		89
26	// structure used for encoding JSON	90	// structure used for encoding JSON
27	typedef struct	91	typedef struct
28	{	92	{
29	char *cur;	93	char *cur; // SvPVX (sv) + current output position
30	STRLEN len; // SvLEN (sv)
31	char *end; // SvEND (sv)	94	char *end; // SvEND (sv)
32	SV *sv;	95	SV *sv; // result scalar
33	UV flags;	96	U32 flags; // F_*
34	int max_recurse;	97	U32 indent; // indentation level
35	int indent;	98	U32 maxdepth; // max. indentation/recursion level
36	} enc_t;	99	} 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		100
58	static void	101	static void
59	need (enc_t *enc, STRLEN len)	102	need (enc_t *enc, STRLEN len)
60	{	103	{
61	if (enc->cur + len >= enc->end)	104	if (enc->cur + len >= enc->end)
62	{	105	{
63	STRLEN cur = enc->cur - SvPVX (enc->sv);	106	STRLEN cur = enc->cur - SvPVX (enc->sv);
64	SvGROW (enc->sv, cur + len + 1);	107	SvGROW (enc->sv, cur + len + 1);
65	enc->cur = SvPVX (enc->sv) + cur;	108	enc->cur = SvPVX (enc->sv) + cur;
66	enc->end = SvEND (enc->sv);	109	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv);
67	}	110	}
68	}	111	}
69		112
70	static void	113	static void
71	encode_ch (enc_t *enc, char ch)	114	encode_ch (enc_t *enc, char ch)
…		…
77	static void	120	static void
78	encode_str (enc_t enc, char str, STRLEN len, int is_utf8)	121	encode_str (enc_t enc, char str, STRLEN len, int is_utf8)
79	{	122	{
80	char *end = str + len;	123	char *end = str + len;
81		124
		125	need (enc, len);
		126
82	while (str < end)	127	while (str < end)
83	{	128	{
84	unsigned char ch = (unsigned char )str;	129	unsigned char ch = (unsigned char )str;
		130
85	if (ch >= 0x20 && ch < 0x80) // most common case	131	if (ch >= 0x20 && ch < 0x80) // most common case
86	{	132	{
		133	if (ch == '"') // but with slow exceptions
		134	{
		135	need (enc, len += 1);
		136	*enc->cur++ = '\\';
		137	*enc->cur++ = '"';
		138	}
		139	else if (ch == '\\')
		140	{
		141	need (enc, len += 1);
		142	*enc->cur++ = '\\';
		143	*enc->cur++ = '\\';
		144	}
		145	else
87	*enc->cur++ = ch;	146	*enc->cur++ = ch;
		147
88	str++;	148	++str;
89	}	149	}
90	else	150	else
91	{	151	{
92	STRLEN clen;	152	switch (ch)
93	UV uch;
94
95	if (is_utf8)
96	{	153	{
97	uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);	154	case '\010': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;
98	if (clen < 0)	155	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");	156	case '\012': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;
100	}	157	case '\014': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;
101	else	158	case '\015': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;
102	{
103	uch = ch;
104	clen = 1;
105	}
106		159
107	need (enc, len += 6);	160	default:
108
109	if (uch < 0xa0 \|\| enc->flags & F_ASCII)
110	{
111	if (uch > 0xFFFFUL)
112	{	161	{
		162	STRLEN clen;
		163	UV uch;
		164
		165	if (is_utf8)
		166	{
		167	//uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
		168	uch = decode_utf8 (str, end - str, &clen);
		169	if (clen == (STRLEN)-1)
		170	croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);
		171	}
		172	else
		173	{
		174	uch = ch;
113	len += 6;	175	clen = 1;
		176	}
		177
		178	if (uch > 0x10FFFFUL)
		179	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
		180
		181	if (uch < 0x80 \|\| enc->flags & F_ASCII)
		182	{
		183	if (uch > 0xFFFFUL)
		184	{
114	need (enc, len += 6);	185	need (enc, len += 11);
115	sprintf (enc->cur, "\\u%04x\\u%04x",	186	sprintf (enc->cur, "\\u%04x\\u%04x",
116	(uch - 0x10000) / 0x400 + 0xD800,	187	(int)((uch - 0x10000) / 0x400 + 0xD800),
117	(uch - 0x10000) % 0x400 + 0xDC00);	188	(int)((uch - 0x10000) % 0x400 + 0xDC00));
118	enc->cur += 12;	189	enc->cur += 12;
		190	}
		191	else
		192	{
		193	static char hexdigit [16] = "0123456789abcdef";
		194	need (enc, len += 5);
		195	*enc->cur++ = '\\';
		196	*enc->cur++ = 'u';
		197	*enc->cur++ = hexdigit [ uch >> 12 ];
		198	*enc->cur++ = hexdigit [(uch >> 8) & 15];
		199	*enc->cur++ = hexdigit [(uch >> 4) & 15];
		200	*enc->cur++ = hexdigit [(uch >> 0) & 15];
		201	}
		202
		203	str += clen;
119	}	204	}
		205	else if (is_utf8)
		206	{
		207	need (enc, len += clen);
		208	do
		209	{
		210	enc->cur++ = str++;
		211	}
		212	while (--clen);
		213	}
120	else	214	else
121	{	215	{
122	sprintf (enc->cur, "\\u%04x", uch);	216	need (enc, len += UTF8_MAX_LEN - 1); // never more than 11 bytes needed
123	enc->cur += 6;	217	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
		218	++str;
		219	}
124	}	220	}
125	}	221	}
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	}	222	}
136		223
137	--len;	224	--len;
138	}	225	}
139	}	226	}
140		227
141	#define INDENT SB \	228	static void
		229	encode_indent (enc_t *enc)
		230	{
142	if (enc->flags & F_INDENT) \	231	if (enc->flags & F_INDENT)
143	{ \	232	{
144	int i_; \	233	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		234
151	#define SPACE SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, ' '); } SE	235	need (enc, spaces);
152	#define NL SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, '\n'); } SE	236	memset (enc->cur, ' ', spaces);
153	#define COMMA SB \	237	enc->cur += spaces;
		238	}
		239	}
		240
		241	static void
		242	encode_space (enc_t *enc)
		243	{
		244	need (enc, 1);
154	encode_ch (enc, ','); \	245	encode_ch (enc, ' ');
		246	}
		247
		248	static void
		249	encode_nl (enc_t *enc)
		250	{
155	if (enc->flags & F_INDENT) \	251	if (enc->flags & F_INDENT)
156	NL; \	252	{
		253	need (enc, 1);
		254	encode_ch (enc, '\n');
		255	}
		256	}
		257
		258	static void
		259	encode_comma (enc_t *enc)
		260	{
		261	encode_ch (enc, ',');
		262
		263	if (enc->flags & F_INDENT)
		264	encode_nl (enc);
157	else if (enc->flags & F_SPACE_AFTER) \	265	else if (enc->flags & F_SPACE_AFTER)
158	SPACE; \	266	encode_space (enc);
159	SE	267	}
160		268
161	static void encode_sv (enc_t enc, SV sv);	269	static void encode_sv (enc_t enc, SV sv);
162		270
163	static void	271	static void
164	encode_av (enc_t enc, AV av)	272	encode_av (enc_t enc, AV av)
165	{	273	{
166	int i, len = av_len (av);	274	int i, len = av_len (av);
167		275
168	encode_ch (enc, '['); NL;	276	if (enc->indent >= enc->maxdepth)
		277	croak ("data structure too deep (hit recursion limit)");
		278
		279	encode_ch (enc, '['); encode_nl (enc);
169	++enc->indent;	280	++enc->indent;
170		281
171	for (i = 0; i <= len; ++i)	282	for (i = 0; i <= len; ++i)
172	{	283	{
173	INDENT;	284	encode_indent (enc);
174	encode_sv (enc, *av_fetch (av, i, 0));	285	encode_sv (enc, *av_fetch (av, i, 0));
175		286
176	if (i < len)	287	if (i < len)
177	COMMA;	288	encode_comma (enc);
178	}	289	}
179		290
180	NL;	291	encode_nl (enc);
181		292
182	--enc->indent;	293	--enc->indent;
183	INDENT; encode_ch (enc, ']');	294	encode_indent (enc); encode_ch (enc, ']');
184	}	295	}
185		296
186	static void	297	static void
187	encode_he (enc_t enc, HE he)	298	encode_he (enc_t enc, HE he)
188	{	299	{
…		…
190		301
191	if (HeKLEN (he) == HEf_SVKEY)	302	if (HeKLEN (he) == HEf_SVKEY)
192	{	303	{
193	SV *sv = HeSVKEY (he);	304	SV *sv = HeSVKEY (he);
194	STRLEN len;	305	STRLEN len;
		306	char *str;
		307
		308	SvGETMAGIC (sv);
195	char *str = SvPV (sv, len);	309	str = SvPV (sv, len);
196		310
197	encode_str (enc, str, len, SvUTF8 (sv));	311	encode_str (enc, str, len, SvUTF8 (sv));
198	}	312	}
199	else	313	else
200	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	314	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
201		315
202	encode_ch (enc, '"');	316	encode_ch (enc, '"');
203		317
204	if (enc->flags & F_SPACE_BEFORE) SPACE;	318	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);
205	encode_ch (enc, ':');	319	encode_ch (enc, ':');
206	if (enc->flags & F_SPACE_AFTER ) SPACE;	320	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);
207	encode_sv (enc, HeVAL (he));	321	encode_sv (enc, HeVAL (he));
208	}	322	}
209		323
210	// compare hash entries, used when all keys are bytestrings	324	// compare hash entries, used when all keys are bytestrings
211	static int	325	static int
…		…
217	HE b = (HE **)b_;	331	HE b = (HE **)b_;
218		332
219	STRLEN la = HeKLEN (a);	333	STRLEN la = HeKLEN (a);
220	STRLEN lb = HeKLEN (b);	334	STRLEN lb = HeKLEN (b);
221		335
222	if (!(cmp == memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))	336	if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))
223	cmp = la < lb ? -1 : la == lb ? 0 : 1;	337	cmp = la - lb;
224		338
225	return cmp;	339	return cmp;
226	}	340	}
227		341
228	// compare hash entries, used when some keys are sv's or utf-x	342	// compare hash entries, used when some keys are sv's or utf-x
…		…
235	static void	349	static void
236	encode_hv (enc_t enc, HV hv)	350	encode_hv (enc_t enc, HV hv)
237	{	351	{
238	int count, i;	352	int count, i;
239		353
		354	if (enc->indent >= enc->maxdepth)
		355	croak ("data structure too deep (hit recursion limit)");
		356
240	encode_ch (enc, '{'); NL; ++enc->indent;	357	encode_ch (enc, '{'); encode_nl (enc); ++enc->indent;
241		358
242	if ((count = hv_iterinit (hv)))	359	if ((count = hv_iterinit (hv)))
243	{	360	{
244	// for canonical output we have to sort by keys first	361	// for canonical output we have to sort by keys first
245	// actually, this is mostly due to the stupid so-called	362	// actually, this is mostly due to the stupid so-called
246	// security workaround added somewhere in 5.8.x.	363	// security workaround added somewhere in 5.8.x.
247	// that randomises hash orderings	364	// that randomises hash orderings
248	if (enc->flags & F_CANONICAL)	365	if (enc->flags & F_CANONICAL)
249	{	366	{
250	HE he, hes [count];	367	HE he, hes [count]; // if your compiler dies here, you need to enable C99 mode
251	int fast = 1;	368	int fast = 1;
252		369
253	i = 0;	370	i = 0;
254	while ((he = hv_iternext (hv)))	371	while ((he = hv_iternext (hv)))
255	{	372	{
…		…
262		379
263	if (fast)	380	if (fast)
264	qsort (hes, count, sizeof (HE *), he_cmp_fast);	381	qsort (hes, count, sizeof (HE *), he_cmp_fast);
265	else	382	else
266	{	383	{
267	// hack to disable "use bytes"	384	// hack to forcefully disable "use bytes"
268	COP *oldcop = PL_curcop, cop;	385	COP cop = *PL_curcop;
269	cop.op_private = 0;	386	cop.op_private = 0;
		387
		388	ENTER;
		389	SAVETMPS;
		390
		391	SAVEVPTR (PL_curcop);
270	PL_curcop = &cop;	392	PL_curcop = &cop;
271		393
272	SAVETMPS;
273	qsort (hes, count, sizeof (HE *), he_cmp_slow);	394	qsort (hes, count, sizeof (HE *), he_cmp_slow);
		395
274	FREETMPS;	396	FREETMPS;
275		397	LEAVE;
276	PL_curcop = oldcop;
277	}	398	}
278		399
279	for (i = 0; i < count; ++i)	400	for (i = 0; i < count; ++i)
280	{	401	{
281	INDENT;	402	encode_indent (enc);
282	encode_he (enc, hes [i]);	403	encode_he (enc, hes [i]);
283		404
284	if (i < count - 1)	405	if (i < count - 1)
285	COMMA;	406	encode_comma (enc);
286	}	407	}
287		408
288	NL;	409	encode_nl (enc);
289	}	410	}
290	else	411	else
291	{	412	{
292	SV *sv;	413	SV *sv;
293	HE *he = hv_iternext (hv);	414	HE *he = hv_iternext (hv);
294		415
295	for (;;)	416	for (;;)
296	{	417	{
297	INDENT;	418	encode_indent (enc);
298	encode_he (enc, he);	419	encode_he (enc, he);
299		420
300	if (!(he = hv_iternext (hv)))	421	if (!(he = hv_iternext (hv)))
301	break;	422	break;
302		423
303	COMMA;	424	encode_comma (enc);
304	}	425	}
305		426
306	NL;	427	encode_nl (enc);
307	}	428	}
308	}	429	}
309		430
310	--enc->indent; INDENT; encode_ch (enc, '}');	431	--enc->indent; encode_indent (enc); encode_ch (enc, '}');
		432	}
		433
		434	// encode objects, arrays and special \0=false and \1=true values.
		435	static void
		436	encode_rv (enc_t enc, SV sv)
		437	{
		438	SvGETMAGIC (sv);
		439
		440	svtype svt = SvTYPE (sv);
		441
		442	if (svt == SVt_PVHV)
		443	encode_hv (enc, (HV *)sv);
		444	else if (svt == SVt_PVAV)
		445	encode_av (enc, (AV *)sv);
		446	else if (svt < SVt_PVAV)
		447	{
		448	if (SvNIOK (sv) && SvIV (sv) == 0)
		449	encode_str (enc, "false", 5, 0);
		450	else if (SvNIOK (sv) && SvIV (sv) == 1)
		451	encode_str (enc, "true", 4, 0);
		452	else
		453	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
		454	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		455	}
		456	else
		457	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
		458	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
311	}	459	}
312		460
313	static void	461	static void
314	encode_sv (enc_t enc, SV sv)	462	encode_sv (enc_t enc, SV sv)
315	{	463	{
		464	SvGETMAGIC (sv);
		465
316	if (SvPOKp (sv))	466	if (SvPOKp (sv))
317	{	467	{
318	STRLEN len;	468	STRLEN len;
319	char *str = SvPV (sv, len);	469	char *str = SvPV (sv, len);
320	encode_ch (enc, '"');	470	encode_ch (enc, '"');
…		…
334	SvIsUV(sv)	484	SvIsUV(sv)
335	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))	485	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))
336	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));	486	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));
337	}	487	}
338	else if (SvROK (sv))	488	else if (SvROK (sv))
339	{	489	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))	490	else if (!SvOK (sv))
355	encode_str (enc, "null", 4, 0);	491	encode_str (enc, "null", 4, 0);
356	else	492	else
357	croak ("encountered perl type that JSON cannot handle");	493	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
		494	SvPV_nolen (sv), SvFLAGS (sv));
358	}	495	}
359		496
360	static SV *	497	static SV *
361	encode_json (SV *scalar, UV flags)	498	encode_json (SV *scalar, U32 flags)
362	{	499	{
		500	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))
		501	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
		502
363	enc_t enc;	503	enc_t enc;
364	enc.flags = flags;	504	enc.flags = flags;
365	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	505	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
366	enc.cur = SvPVX (enc.sv);	506	enc.cur = SvPVX (enc.sv);
367	enc.end = SvEND (enc.sv);	507	enc.end = SvEND (enc.sv);
368	enc.max_recurse = 0;
369	enc.indent = 0;	508	enc.indent = 0;
		509	enc.maxdepth = DEC_DEPTH (flags);
370		510
371	SvPOK_only (enc.sv);	511	SvPOK_only (enc.sv);
372	encode_sv (&enc, scalar);	512	encode_sv (&enc, scalar);
373		513
374	if (!(flags & (F_ASCII \| F_UTF8)))	514	if (!(flags & (F_ASCII \| F_UTF8)))
375	SvUTF8_on (enc.sv);	515	SvUTF8_on (enc.sv);
376		516
377	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	517	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
		518
		519	if (enc.flags & F_SHRINK)
		520	shrink (enc.sv);
		521
378	return enc.sv;	522	return enc.sv;
379	}	523	}
380		524
381	/////////////////////////////////////////////////////////////////////////////	525	/////////////////////////////////////////////////////////////////////////////
		526	// decoder
382		527
383	#define WS \	528	// structure used for decoding JSON
		529	typedef struct
		530	{
		531	char *cur; // current parser pointer
		532	char *end; // end of input string
		533	const char *err; // parse error, if != 0
		534	U32 flags; // F_*
		535	U32 depth; // recursion depth
		536	U32 maxdepth; // recursion depth limit
		537	} dec_t;
		538
		539	static void
		540	decode_ws (dec_t *dec)
		541	{
384	for (;;) \	542	for (;;)
385	{ \	543	{
386	char ch = *dec->cur; \	544	char ch = *dec->cur;
		545
387	if (ch > 0x20 \	546	if (ch > 0x20
388	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) \	547	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09))
389	break; \	548	break;
		549
390	++dec->cur; \	550	++dec->cur;
391	}	551	}
		552	}
392		553
393	#define ERR(reason) SB dec->err = reason; goto fail; SE	554	#define ERR(reason) SB dec->err = reason; goto fail; SE
		555
394	#define EXPECT_CH(ch) SB \	556	#define EXPECT_CH(ch) SB \
395	if (*dec->cur != ch) \	557	if (*dec->cur != ch) \
396	ERR (# ch " expected"); \	558	ERR (# ch " expected"); \
397	++dec->cur; \	559	++dec->cur; \
398	SE	560	SE
399		561
		562	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")
		563	#define DEC_DEC_DEPTH --dec->depth
		564
400	static SV decode_sv (dec_t dec);	565	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		566
407	static signed char decode_hexdigit[256];	567	static signed char decode_hexdigit[256];
408		568
409	static UV	569	static UV
410	decode_4hex (dec_t *dec)	570	decode_4hex (dec_t *dec)
411	{	571	{
412	signed char d1, d2, d3, d4;	572	signed char d1, d2, d3, d4;
		573	unsigned char cur = (unsigned char )dec->cur;
413		574
414	d1 = decode_hexdigit [((unsigned char *)dec->cur) [0]];
415	if (d1 < 0) ERR ("four hexadecimal digits expected");	575	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");	576	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");	577	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");	578	d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected");
422		579
423	dec->cur += 4;	580	dec->cur += 4;
424		581
425	return ((UV)d1) << 12	582	return ((UV)d1) << 12
426	\| ((UV)d2) << 8	583	\| ((UV)d2) << 8
…		…
432	}	589	}
433		590
434	static SV *	591	static SV *
435	decode_str (dec_t *dec)	592	decode_str (dec_t *dec)
436	{	593	{
437	SV *sv = NEWSV (0,2);	594	SV *sv = 0;
438	STRLEN cur = 0;
439	int utf8 = 0;	595	int utf8 = 0;
440		596
441	for (;;)	597	do
442	{	598	{
443	unsigned char ch = (unsigned char )dec->cur;	599	char buf [SHORT_STRING_LEN + UTF8_MAX_LEN];
		600	char *cur = buf;
444		601
445	if (ch == '"')	602	do
446	break;
447	else if (ch == '\\')
448	{	603	{
449	switch (*++dec->cur)	604	unsigned char ch = (unsigned char )dec->cur++;
		605
		606	if (ch == '"')
450	{	607	{
451	case '\\':	608	--dec->cur;
452	case '/':	609	break;
453	case '"': APPEND_CH (*dec->cur++); break;	610	}
454		611	else if (ch == '\\')
455	case 'b': APPEND_CH ('\010'); ++dec->cur; break;	612	{
456	case 't': APPEND_CH ('\011'); ++dec->cur; break;	613	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	{	614	{
463	UV lo, hi;	615	case '\\':
464	++dec->cur;	616	case '/':
		617	case '"': cur++ = dec->cur++; break;
465		618
466	hi = decode_4hex (dec);	619	case 'b': ++dec->cur; *cur++ = '\010'; break;
467	if (hi == (UV)-1)	620	case 't': ++dec->cur; *cur++ = '\011'; break;
468	goto fail;	621	case 'n': ++dec->cur; *cur++ = '\012'; break;
		622	case 'f': ++dec->cur; *cur++ = '\014'; break;
		623	case 'r': ++dec->cur; *cur++ = '\015'; break;
469		624
470	// possibly a surrogate pair	625	case 'u':
471	if (hi >= 0xd800 && hi < 0xdc00)
472	{	626	{
473	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')	627	UV lo, hi;
474	ERR ("illegal surrogate character");
475
476	dec->cur += 2;	628	++dec->cur;
477		629
478	lo = decode_4hex (dec);	630	hi = decode_4hex (dec);
479	if (lo == (UV)-1)	631	if (hi == (UV)-1)
480	goto fail;	632	goto fail;
481		633
		634	// possibly a surrogate pair
		635	if (hi >= 0xd800)
		636	if (hi < 0xdc00)
		637	{
		638	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')
		639	ERR ("missing low surrogate character in surrogate pair");
		640
		641	dec->cur += 2;
		642
		643	lo = decode_4hex (dec);
		644	if (lo == (UV)-1)
		645	goto fail;
		646
482	if (lo < 0xdc00 \|\| lo >= 0xe000)	647	if (lo < 0xdc00 \|\| lo >= 0xe000)
483	ERR ("surrogate pair expected");	648	ERR ("surrogate pair expected");
484		649
485	hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000;	650	hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000;
		651	}
		652	else if (hi < 0xe000)
		653	ERR ("missing high surrogate character in surrogate pair");
		654
		655	if (hi >= 0x80)
		656	{
		657	utf8 = 1;
		658
		659	cur = (char *)uvuni_to_utf8_flags (cur, hi, 0);
		660	}
		661	else
		662	*cur++ = hi;
486	}	663	}
487	else if (lo >= 0xdc00 && lo < 0xe000)
488	ERR ("illegal surrogate character");
489
490	if (hi >= 0x80)
491	{	664	break;
492	utf8 = 1;
493		665
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	666	default:
498	APPEND_CH (hi);	667	--dec->cur;
		668	ERR ("illegal backslash escape sequence in string");
499	}	669	}
		670	}
		671	else if (ch >= 0x20 && ch <= 0x7f)
		672	*cur++ = ch;
		673	else if (ch >= 0x80)
		674	{
		675	--dec->cur;
		676
		677	STRLEN clen;
		678	UV uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen);
		679	if (clen == (STRLEN)-1)
		680	ERR ("malformed UTF-8 character in JSON string");
		681
		682	do
		683	cur++ = dec->cur++;
		684	while (--clen);
		685
		686	utf8 = 1;
		687	}
		688	else
		689	{
		690	--dec->cur;
		691
		692	if (!ch)
		693	ERR ("unexpected end of string while parsing JSON string");
500	break;	694	else
		695	ERR ("invalid character encountered while parsing JSON string");
501	}	696	}
502	}	697	}
503	else if (ch >= 0x20 && ch <= 0x7f)	698	while (cur < buf + SHORT_STRING_LEN);
504	APPEND_CH (*dec->cur++);	699
505	else if (ch >= 0x80)	700	STRLEN len = cur - buf;
		701
		702	if (sv)
506	{	703	{
507	STRLEN clen;	704	SvGROW (sv, SvCUR (sv) + len + 1);
508	UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY);	705	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
509	if (clen < 0)	706	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	}	707	}
516	else	708	else
517	ERR ("invalid character encountered");	709	sv = newSVpvn (buf, len);
518	}	710	}
		711	while (*dec->cur != '"');
519		712
520	++dec->cur;	713	++dec->cur;
521		714
		715	if (sv)
		716	{
522	SvPOK_only (sv);	717	SvPOK_only (sv);
523
524	SvCUR_set (sv, cur);
525	*SvEND (sv) = 0;	718	*SvEND (sv) = 0;
526		719
527	if (utf8)	720	if (utf8)
528	SvUTF8_on (sv);	721	SvUTF8_on (sv);
		722	}
		723	else
		724	sv = newSVpvn ("", 0);
529		725
530	return sv;	726	return sv;
531		727
532	fail:	728	fail:
533	SvREFCNT_dec (sv);
534	return 0;	729	return 0;
535	}	730	}
536		731
537	static SV *	732	static SV *
538	decode_num (dec_t *dec)	733	decode_num (dec_t *dec)
…		…
548	{	743	{
549	++dec->cur;	744	++dec->cur;
550	if (dec->cur >= '0' && dec->cur <= '9')	745	if (dec->cur >= '0' && dec->cur <= '9')
551	ERR ("malformed number (leading zero must not be followed by another digit)");	746	ERR ("malformed number (leading zero must not be followed by another digit)");
552	}	747	}
553		748	else if (dec->cur < '0' \|\| dec->cur > '9')
554	// int	749	ERR ("malformed number (no digits after initial minus)");
		750	else
		751	do
		752	{
		753	++dec->cur;
		754	}
555	while (dec->cur >= '0' && dec->cur <= '9')	755	while (dec->cur >= '0' && dec->cur <= '9');
556	++dec->cur;
557		756
558	// [frac]	757	// [frac]
559	if (*dec->cur == '.')	758	if (*dec->cur == '.')
560	{	759	{
561	is_nv = 1;	760	++dec->cur;
		761
		762	if (dec->cur < '0' \|\| dec->cur > '9')
		763	ERR ("malformed number (no digits after decimal point)");
562		764
563	do	765	do
564	{	766	{
565	++dec->cur;	767	++dec->cur;
566	}	768	}
567	while (dec->cur >= '0' && dec->cur <= '9');	769	while (dec->cur >= '0' && dec->cur <= '9');
		770
		771	is_nv = 1;
568	}	772	}
569		773
570	// [exp]	774	// [exp]
571	if (dec->cur == 'e' \|\| dec->cur == 'E')	775	if (dec->cur == 'e' \|\| dec->cur == 'E')
572	{	776	{
573	is_nv = 1;
574
575	++dec->cur;	777	++dec->cur;
		778
576	if (dec->cur == '-' \|\| dec->cur == '+')	779	if (dec->cur == '-' \|\| dec->cur == '+')
577	++dec->cur;	780	++dec->cur;
578		781
		782	if (dec->cur < '0' \|\| dec->cur > '9')
		783	ERR ("malformed number (no digits after exp sign)");
		784
		785	do
		786	{
		787	++dec->cur;
		788	}
579	while (dec->cur >= '0' && dec->cur <= '9')	789	while (dec->cur >= '0' && dec->cur <= '9');
580	++dec->cur;	790
		791	is_nv = 1;
581	}	792	}
582		793
583	if (!is_nv)	794	if (!is_nv)
584	{	795	{
585	UV uv;	796	UV uv;
…		…
603	static SV *	814	static SV *
604	decode_av (dec_t *dec)	815	decode_av (dec_t *dec)
605	{	816	{
606	AV *av = newAV ();	817	AV *av = newAV ();
607		818
		819	DEC_INC_DEPTH;
		820	decode_ws (dec);
		821
		822	if (*dec->cur == ']')
		823	++dec->cur;
		824	else
608	for (;;)	825	for (;;)
609	{	826	{
610	SV *value;	827	SV *value;
611		828
612	value = decode_sv (dec);	829	value = decode_sv (dec);
613	if (!value)	830	if (!value)
614	goto fail;	831	goto fail;
615		832
616	av_push (av, value);	833	av_push (av, value);
617		834
618	WS;	835	decode_ws (dec);
619		836
620	if (*dec->cur == ']')	837	if (*dec->cur == ']')
621	{	838	{
622	++dec->cur;	839	++dec->cur;
623	break;	840	break;
		841	}
624	}	842
625
626	if (*dec->cur != ',')	843	if (*dec->cur != ',')
627	ERR (", or ] expected while parsing array");	844	ERR (", or ] expected while parsing array");
628		845
629	++dec->cur;	846	++dec->cur;
630	}	847	}
631		848
		849	DEC_DEC_DEPTH;
632	return newRV_noinc ((SV *)av);	850	return newRV_noinc ((SV *)av);
633		851
634	fail:	852	fail:
635	SvREFCNT_dec (av);	853	SvREFCNT_dec (av);
		854	DEC_DEC_DEPTH;
636	return 0;	855	return 0;
637	}	856	}
638		857
639	static SV *	858	static SV *
640	decode_hv (dec_t *dec)	859	decode_hv (dec_t *dec)
641	{	860	{
642	HV *hv = newHV ();	861	HV *hv = newHV ();
643		862
		863	DEC_INC_DEPTH;
		864	decode_ws (dec);
		865
		866	if (*dec->cur == '}')
		867	++dec->cur;
		868	else
644	for (;;)	869	for (;;)
645	{	870	{
646	SV key, value;	871	SV key, value;
647		872
648	WS; EXPECT_CH ('"');	873	decode_ws (dec); EXPECT_CH ('"');
649		874
650	key = decode_str (dec);	875	key = decode_str (dec);
651	if (!key)	876	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;	877	goto fail;
		878
		879	decode_ws (dec); EXPECT_CH (':');
		880
		881	value = decode_sv (dec);
		882	if (!value)
		883	{
		884	SvREFCNT_dec (key);
		885	goto fail;
661	}	886	}
662		887
663	//TODO: optimise
664	hv_store_ent (hv, key, value, 0);	888	hv_store_ent (hv, key, value, 0);
		889	SvREFCNT_dec (key);
665		890
666	WS;	891	decode_ws (dec);
667		892
668	if (*dec->cur == '}')	893	if (*dec->cur == '}')
669	{	894	{
670	++dec->cur;	895	++dec->cur;
671	break;	896	break;
672	}	897	}
673		898
674	if (*dec->cur != ',')	899	if (*dec->cur != ',')
675	ERR (", or } expected while parsing object/hash");	900	ERR (", or } expected while parsing object/hash");
676		901
677	++dec->cur;	902	++dec->cur;
678	}	903	}
679		904
		905	DEC_DEC_DEPTH;
680	return newRV_noinc ((SV *)hv);	906	return newRV_noinc ((SV *)hv);
681		907
682	fail:	908	fail:
683	SvREFCNT_dec (hv);	909	SvREFCNT_dec (hv);
		910	DEC_DEC_DEPTH;
684	return 0;	911	return 0;
685	}	912	}
686		913
687	static SV *	914	static SV *
688	decode_sv (dec_t *dec)	915	decode_sv (dec_t *dec)
689	{	916	{
690	WS;	917	decode_ws (dec);
691	switch (*dec->cur)	918	switch (*dec->cur)
692	{	919	{
693	case '"': ++dec->cur; return decode_str (dec);	920	case '"': ++dec->cur; return decode_str (dec);
694	case '[': ++dec->cur; return decode_av (dec);	921	case '[': ++dec->cur; return decode_av (dec);
695	case '{': ++dec->cur; return decode_hv (dec);	922	case '{': ++dec->cur; return decode_hv (dec);
…		…
723		950
724	case 'n':	951	case 'n':
725	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	952	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
726	{	953	{
727	dec->cur += 4;	954	dec->cur += 4;
728	return newSViv (1);	955	return newSVsv (&PL_sv_undef);
729	}	956	}
730	else	957	else
731	ERR ("'null' expected");	958	ERR ("'null' expected");
732		959
733	break;	960	break;
734		961
735	default:	962	default:
736	ERR ("malformed json string");	963	ERR ("malformed JSON string, neither array, object, number, string or atom");
737	break;	964	break;
738	}	965	}
739		966
740	fail:	967	fail:
741	return 0;	968	return 0;
742	}	969	}
743		970
744	static SV *	971	static SV *
745	decode_json (SV *string, UV flags)	972	decode_json (SV *string, U32 flags)
746	{	973	{
747	SV *sv;	974	SV *sv;
748		975
		976	SvUPGRADE (string, SVt_PV);
		977
749	if (!(flags & F_UTF8))	978	if (flags & F_UTF8)
		979	sv_utf8_downgrade (string, 0);
		980	else
750	sv_utf8_upgrade (string);	981	sv_utf8_upgrade (string);
751		982
752	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	983	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
753		984
754	dec_t dec;	985	dec_t dec;
755	dec.flags = flags;	986	dec.flags = flags;
756	dec.cur = SvPVX (string);	987	dec.cur = SvPVX (string);
757	dec.end = SvEND (string);	988	dec.end = SvEND (string);
758	dec.err = 0;	989	dec.err = 0;
		990	dec.depth = 0;
		991	dec.maxdepth = DEC_DEPTH (dec.flags);
759		992
760	*dec.end = 1; // invalid anywhere	993	*dec.end = 0; // this should basically be a nop, too, but make sure its there
761	sv = decode_sv (&dec);	994	sv = decode_sv (&dec);
762	*dec.end = 0;
763		995
764	if (!sv)	996	if (!sv)
765	{	997	{
		998	IV offset = dec.flags & F_UTF8
		999	? dec.cur - SvPVX (string)
766	IV offset = utf8_distance (dec.cur, SvPVX (string));	1000	: utf8_distance (dec.cur, SvPVX (string));
767	SV *uni = sv_newmortal ();	1001	SV *uni = sv_newmortal ();
768		1002
		1003	// horrible hack to silence warning inside pv_uni_display
		1004	COP cop = *PL_curcop;
		1005	cop.cop_warnings = pWARN_NONE;
		1006	ENTER;
		1007	SAVEVPTR (PL_curcop);
		1008	PL_curcop = &cop;
769	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1009	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
		1010	LEAVE;
		1011
770	croak ("%s, at character %d (%s)",	1012	croak ("%s, at character offset %d [\"%s\"]",
771	dec.err,	1013	dec.err,
772	(int)offset,	1014	(int)offset,
773	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1015	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
774	}	1016	}
775		1017
776	sv_dump (sv);//D
777	return sv_2mortal (sv);	1018	sv = sv_2mortal (sv);
		1019
		1020	if (!(dec.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)");
		1022
		1023	return sv;
778	}	1024	}
		1025
		1026	/////////////////////////////////////////////////////////////////////////////
		1027	// XS interface functions
779		1028
780	MODULE = JSON::XS PACKAGE = JSON::XS	1029	MODULE = JSON::XS PACKAGE = JSON::XS
781		1030
782	BOOT:	1031	BOOT:
783	{	1032	{
784	int i;	1033	int i;
785		1034
786	memset (decode_hexdigit, 0xff, 256);	1035	memset (decode_hexdigit, 0xff, 256);
		1036
787	for (i = 10; i--; )	1037	for (i = 0; i < 256; ++i)
788	decode_hexdigit ['0' + i] = i;	1038	decode_hexdigit [i] =
789		1039	i >= '0' && i <= '9' ? i - '0'
790	for (i = 6; --i; )	1040	: i >= 'a' && i <= 'f' ? i - 'a' + 10
791	{	1041	: i >= 'A' && i <= 'F' ? i - 'A' + 10
792	decode_hexdigit ['a' + i] = 10 + i;	1042	: -1;
793	decode_hexdigit ['A' + i] = 10 + i;
794	}
795		1043
796	json_stash = gv_stashpv ("JSON::XS", 1);	1044	json_stash = gv_stashpv ("JSON::XS", 1);
797	}	1045	}
		1046
		1047	PROTOTYPES: DISABLE
798		1048
799	SV new (char dummy)	1049	SV new (char dummy)
800	CODE:	1050	CODE:
801	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);	1051	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);
802	OUTPUT:	1052	OUTPUT:
803	RETVAL	1053	RETVAL
804		1054
805	SV ascii (SV self, int enable)	1055	SV ascii (SV self, int enable = 1)
806	ALIAS:	1056	ALIAS:
807	ascii = F_ASCII	1057	ascii = F_ASCII
808	utf8 = F_UTF8	1058	utf8 = F_UTF8
809	indent = F_INDENT	1059	indent = F_INDENT
810	canonical = F_CANONICAL	1060	canonical = F_CANONICAL
811	space_before = F_SPACE_BEFORE	1061	space_before = F_SPACE_BEFORE
812	space_after = F_SPACE_AFTER	1062	space_after = F_SPACE_AFTER
813	json_rpc = F_JSON_RPC	1063	pretty = F_PRETTY
		1064	allow_nonref = F_ALLOW_NONREF
		1065	shrink = F_SHRINK
814	CODE:	1066	CODE:
815	{	1067	{
816	UV *uv = SvJSON (self);	1068	UV *uv = SvJSON (self);
817	if (enable)	1069	if (enable)
818	*uv \|= ix;	1070	*uv \|= ix;
…		…
822	RETVAL = newSVsv (self);	1074	RETVAL = newSVsv (self);
823	}	1075	}
824	OUTPUT:	1076	OUTPUT:
825	RETVAL	1077	RETVAL
826		1078
		1079	SV max_depth (SV self, int max_depth = 0x80000000UL)
		1080	CODE:
		1081	{
		1082	UV *uv = SvJSON (self);
		1083	UV log2 = 0;
		1084
		1085	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
		1086
		1087	while ((1UL << log2) < max_depth)
		1088	++log2;
		1089
		1090	uv = uv & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
		1091
		1092	RETVAL = newSVsv (self);
		1093	}
		1094	OUTPUT:
		1095	RETVAL
		1096
827	void encode (SV self, SV scalar)	1097	void encode (SV self, SV scalar)
828	PPCODE:	1098	PPCODE:
829	XPUSHs (encode_json (scalar, *SvJSON (self)));	1099	XPUSHs (encode_json (scalar, *SvJSON (self)));
830		1100
831	void decode (SV self, SV jsondata)	1101	void decode (SV self, SV jsonstr)
832	PPCODE:	1102	PPCODE:
833	XPUSHs (decode_json (jsondata, *SvJSON (self)));	1103	XPUSHs (decode_json (jsonstr, *SvJSON (self)));
834		1104
		1105	PROTOTYPES: ENABLE
		1106
		1107	void to_json (SV *scalar)
		1108	ALIAS:
		1109	objToJson = 0
		1110	PPCODE:
		1111	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));
		1112
		1113	void from_json (SV *jsonstr)
		1114	ALIAS:
		1115	jsonToObj = 0
		1116	PPCODE:
		1117	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8));
		1118

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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 1.24 by root, Tue Apr 3 23:59:04 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 1.24 by root, Tue Apr 3 23:59:04 2007 UTC