[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 1.31 by root, Wed May 9 16:33:53 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
15	#define F_JSON_RPC 0x00000040
16	#define F_ALLOW_NONREF 0x00000080	21	#define F_ALLOW_NONREF 0x00000100UL
		22	#define F_SHRINK 0x00000200UL
		23	#define F_MAXDEPTH 0xf8000000UL
		24	#define S_MAXDEPTH 27
		25
		26	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
		27
		28	// F_SELFCONVERT? <=> to_json/toJson
		29	// F_BLESSED? <=> { $__class__$ => }
17		30
18	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	31	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
19	#define F_DEFAULT 0	32	#define F_DEFAULT (9UL << S_MAXDEPTH)
20		33
21	#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
22		38
23	#define SB do {	39	#define SB do {
24	#define SE } while (0)	40	#define SE } while (0)
25		41
26	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
27		94
28	// structure used for encoding JSON	95	// structure used for encoding JSON
29	typedef struct	96	typedef struct
30	{	97	{
31	char *cur;	98	char *cur; // SvPVX (sv) + current output position
32	STRLEN len; // SvLEN (sv)
33	char *end; // SvEND (sv)	99	char *end; // SvEND (sv)
34	SV *sv;	100	SV *sv; // result scalar
35	UV flags;	101	U32 flags; // F_*
36	int max_recurse;	102	U32 indent; // indentation level
37	int indent;	103	U32 maxdepth; // max. indentation/recursion level
38	} enc_t;	104	} 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		105
60	static void	106	static void
61	need (enc_t *enc, STRLEN len)	107	need (enc_t *enc, STRLEN len)
62	{	108	{
63	if (enc->cur + len >= enc->end)	109	if (enc->cur + len >= enc->end)
64	{	110	{
65	STRLEN cur = enc->cur - SvPVX (enc->sv);	111	STRLEN cur = enc->cur - SvPVX (enc->sv);
66	SvGROW (enc->sv, cur + len + 1);	112	SvGROW (enc->sv, cur + len + 1);
67	enc->cur = SvPVX (enc->sv) + cur;	113	enc->cur = SvPVX (enc->sv) + cur;
68	enc->end = SvEND (enc->sv);	114	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
69	}	115	}
70	}	116	}
71		117
72	static void	118	static void
73	encode_ch (enc_t *enc, char ch)	119	encode_ch (enc_t *enc, char ch)
…		…
79	static void	125	static void
80	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)
81	{	127	{
82	char *end = str + len;	128	char *end = str + len;
83		129
		130	need (enc, len);
		131
84	while (str < end)	132	while (str < end)
85	{	133	{
86	unsigned char ch = (unsigned char )str;	134	unsigned char ch = (unsigned char )str;
		135
87	if (ch >= 0x20 && ch < 0x80) // most common case	136	if (ch >= 0x20 && ch < 0x80) // most common case
88	{	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
89	*enc->cur++ = ch;	151	*enc->cur++ = ch;
		152
90	str++;	153	++str;
91	}	154	}
92	else	155	else
93	{	156	{
94	STRLEN clen;	157	switch (ch)
95	UV uch;
96
97	if (is_utf8)
98	{	158	{
99	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;
100	if (clen < 0)	160	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");	161	case '\012': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;
102	}	162	case '\014': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;
103	else	163	case '\015': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;
104	{
105	uch = ch;
106	clen = 1;
107	}
108		164
109	need (enc, len += 6);	165	default:
110
111	if (uch < 0xa0 \|\| enc->flags & F_ASCII)
112	{
113	if (uch > 0xFFFFUL)
114	{	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;
115	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	{
116	need (enc, len += 6);	190	need (enc, len += 11);
117	sprintf (enc->cur, "\\u%04x\\u%04x",	191	sprintf (enc->cur, "\\u%04x\\u%04x",
118	(uch - 0x10000) / 0x400 + 0xD800,	192	(int)((uch - 0x10000) / 0x400 + 0xD800),
119	(uch - 0x10000) % 0x400 + 0xDC00);	193	(int)((uch - 0x10000) % 0x400 + 0xDC00));
120	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;
121	}	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	}
122	else	224	else
123	{	225	{
124	sprintf (enc->cur, "\\u%04x", uch);	226	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed
125	enc->cur += 6;	227	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
		228	++str;
		229	}
126	}	230	}
127	}	231	}
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	}	232	}
138		233
139	--len;	234	--len;
140	}	235	}
141	}	236	}
142		237
143	#define INDENT SB \	238	static void
		239	encode_indent (enc_t *enc)
		240	{
144	if (enc->flags & F_INDENT) \	241	if (enc->flags & F_INDENT)
145	{ \	242	{
146	int i_; \	243	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		244
153	#define SPACE SB need (enc, 1); encode_ch (enc, ' '); SE	245	need (enc, spaces);
154	#define NL SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, '\n'); } SE	246	memset (enc->cur, ' ', spaces);
155	#define COMMA SB \	247	enc->cur += spaces;
		248	}
		249	}
		250
		251	static void
		252	encode_space (enc_t *enc)
		253	{
		254	need (enc, 1);
156	encode_ch (enc, ','); \	255	encode_ch (enc, ' ');
		256	}
		257
		258	static void
		259	encode_nl (enc_t *enc)
		260	{
157	if (enc->flags & F_INDENT) \	261	if (enc->flags & F_INDENT)
158	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);
159	else if (enc->flags & F_SPACE_AFTER) \	275	else if (enc->flags & F_SPACE_AFTER)
160	SPACE; \	276	encode_space (enc);
161	SE	277	}
162		278
163	static void encode_sv (enc_t enc, SV sv);	279	static void encode_sv (enc_t enc, SV sv);
164		280
165	static void	281	static void
166	encode_av (enc_t enc, AV av)	282	encode_av (enc_t enc, AV av)
167	{	283	{
168	int i, len = av_len (av);	284	int i, len = av_len (av);
169		285
170	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);
171	++enc->indent;	290	++enc->indent;
172		291
173	for (i = 0; i <= len; ++i)	292	for (i = 0; i <= len; ++i)
174	{	293	{
175	INDENT;	294	encode_indent (enc);
176	encode_sv (enc, *av_fetch (av, i, 0));	295	encode_sv (enc, *av_fetch (av, i, 0));
177		296
178	if (i < len)	297	if (i < len)
179	COMMA;	298	encode_comma (enc);
180	}	299	}
181		300
182	NL;	301	encode_nl (enc);
183		302
184	--enc->indent;	303	--enc->indent;
185	INDENT; encode_ch (enc, ']');	304	encode_indent (enc); encode_ch (enc, ']');
186	}	305	}
187		306
188	static void	307	static void
189	encode_he (enc_t enc, HE he)	308	encode_he (enc_t enc, HE he)
190	{	309	{
…		…
192		311
193	if (HeKLEN (he) == HEf_SVKEY)	312	if (HeKLEN (he) == HEf_SVKEY)
194	{	313	{
195	SV *sv = HeSVKEY (he);	314	SV *sv = HeSVKEY (he);
196	STRLEN len;	315	STRLEN len;
		316	char *str;
		317
		318	SvGETMAGIC (sv);
197	char *str = SvPV (sv, len);	319	str = SvPV (sv, len);
198		320
199	encode_str (enc, str, len, SvUTF8 (sv));	321	encode_str (enc, str, len, SvUTF8 (sv));
200	}	322	}
201	else	323	else
202	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	324	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
203		325
204	encode_ch (enc, '"');	326	encode_ch (enc, '"');
205		327
206	if (enc->flags & F_SPACE_BEFORE) SPACE;	328	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);
207	encode_ch (enc, ':');	329	encode_ch (enc, ':');
208	if (enc->flags & F_SPACE_AFTER ) SPACE;	330	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);
209	encode_sv (enc, HeVAL (he));	331	encode_sv (enc, HeVAL (he));
210	}	332	}
211		333
212	// compare hash entries, used when all keys are bytestrings	334	// compare hash entries, used when all keys are bytestrings
213	static int	335	static int
…		…
219	HE b = (HE **)b_;	341	HE b = (HE **)b_;
220		342
221	STRLEN la = HeKLEN (a);	343	STRLEN la = HeKLEN (a);
222	STRLEN lb = HeKLEN (b);	344	STRLEN lb = HeKLEN (b);
223		345
224	if (!(cmp == memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))	346	if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))
225	cmp = la < lb ? -1 : la == lb ? 0 : 1;	347	cmp = la - lb;
226		348
227	return cmp;	349	return cmp;
228	}	350	}
229		351
230	// 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
…		…
237	static void	359	static void
238	encode_hv (enc_t enc, HV hv)	360	encode_hv (enc_t enc, HV hv)
239	{	361	{
240	int count, i;	362	int count, i;
241		363
		364	if (enc->indent >= enc->maxdepth)
		365	croak ("data structure too deep (hit recursion limit)");
		366
242	encode_ch (enc, '{'); NL; ++enc->indent;	367	encode_ch (enc, '{'); encode_nl (enc); ++enc->indent;
243		368
244	if ((count = hv_iterinit (hv)))	369	if ((count = hv_iterinit (hv)))
245	{	370	{
246	// for canonical output we have to sort by keys first	371	// for canonical output we have to sort by keys first
247	// actually, this is mostly due to the stupid so-called	372	// actually, this is mostly due to the stupid so-called
248	// security workaround added somewhere in 5.8.x.	373	// security workaround added somewhere in 5.8.x.
249	// that randomises hash orderings	374	// that randomises hash orderings
250	if (enc->flags & F_CANONICAL)	375	if (enc->flags & F_CANONICAL)
251	{	376	{
252	HE he, hes [count];	377	HE he, hes [count]; // if your compiler dies here, you need to enable C99 mode
253	int fast = 1;	378	int fast = 1;
254		379
255	i = 0;	380	i = 0;
256	while ((he = hv_iternext (hv)))	381	while ((he = hv_iternext (hv)))
257	{	382	{
…		…
264		389
265	if (fast)	390	if (fast)
266	qsort (hes, count, sizeof (HE *), he_cmp_fast);	391	qsort (hes, count, sizeof (HE *), he_cmp_fast);
267	else	392	else
268	{	393	{
269	// hack to disable "use bytes"	394	// hack to forcefully disable "use bytes"
270	COP *oldcop = PL_curcop, cop;	395	COP cop = *PL_curcop;
271	cop.op_private = 0;	396	cop.op_private = 0;
		397
		398	ENTER;
		399	SAVETMPS;
		400
		401	SAVEVPTR (PL_curcop);
272	PL_curcop = &cop;	402	PL_curcop = &cop;
273		403
274	SAVETMPS;
275	qsort (hes, count, sizeof (HE *), he_cmp_slow);	404	qsort (hes, count, sizeof (HE *), he_cmp_slow);
		405
276	FREETMPS;	406	FREETMPS;
277		407	LEAVE;
278	PL_curcop = oldcop;
279	}	408	}
280		409
281	for (i = 0; i < count; ++i)	410	for (i = 0; i < count; ++i)
282	{	411	{
283	INDENT;	412	encode_indent (enc);
284	encode_he (enc, hes [i]);	413	encode_he (enc, hes [i]);
285		414
286	if (i < count - 1)	415	if (i < count - 1)
287	COMMA;	416	encode_comma (enc);
288	}	417	}
289		418
290	NL;	419	encode_nl (enc);
291	}	420	}
292	else	421	else
293	{	422	{
294	SV *sv;
295	HE *he = hv_iternext (hv);	423	HE *he = hv_iternext (hv);
296		424
297	for (;;)	425	for (;;)
298	{	426	{
299	INDENT;	427	encode_indent (enc);
300	encode_he (enc, he);	428	encode_he (enc, he);
301		429
302	if (!(he = hv_iternext (hv)))	430	if (!(he = hv_iternext (hv)))
303	break;	431	break;
304		432
305	COMMA;	433	encode_comma (enc);
306	}	434	}
307		435
308	NL;	436	encode_nl (enc);
309	}	437	}
310	}	438	}
311		439
312	--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))));
313	}	469	}
314		470
315	static void	471	static void
316	encode_sv (enc_t enc, SV sv)	472	encode_sv (enc_t enc, SV sv)
317	{	473	{
		474	SvGETMAGIC (sv);
		475
318	if (SvPOKp (sv))	476	if (SvPOKp (sv))
319	{	477	{
320	STRLEN len;	478	STRLEN len;
321	char *str = SvPV (sv, len);	479	char *str = SvPV (sv, len);
322	encode_ch (enc, '"');	480	encode_ch (enc, '"');
…		…
336	SvIsUV(sv)	494	SvIsUV(sv)
337	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))	495	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))
338	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));	496	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));
339	}	497	}
340	else if (SvROK (sv))	498	else if (SvROK (sv))
341	{	499	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))	500	else if (!SvOK (sv))
357	encode_str (enc, "null", 4, 0);	501	encode_str (enc, "null", 4, 0);
358	else	502	else
359	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));
360	}	505	}
361		506
362	static SV *	507	static SV *
363	encode_json (SV *scalar, UV flags)	508	encode_json (SV *scalar, U32 flags)
364	{	509	{
		510	enc_t enc;
		511
365	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))	512	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))
366	croak ("hash- or arraref required (not a simple scalar, use allow_nonref to allow this)");	513	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
367		514
368	enc_t enc;
369	enc.flags = flags;	515	enc.flags = flags;
370	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	516	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
371	enc.cur = SvPVX (enc.sv);	517	enc.cur = SvPVX (enc.sv);
372	enc.end = SvEND (enc.sv);	518	enc.end = SvEND (enc.sv);
373	enc.max_recurse = 0;
374	enc.indent = 0;	519	enc.indent = 0;
		520	enc.maxdepth = DEC_DEPTH (flags);
375		521
376	SvPOK_only (enc.sv);	522	SvPOK_only (enc.sv);
377	encode_sv (&enc, scalar);	523	encode_sv (&enc, scalar);
378		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
379	if (!(flags & (F_ASCII \| F_UTF8)))	528	if (!(flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
380	SvUTF8_on (enc.sv);	529	SvUTF8_on (enc.sv);
381		530
382	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	531	if (enc.flags & F_SHRINK)
		532	shrink (enc.sv);
		533
383	return enc.sv;	534	return enc.sv;
384	}	535	}
385		536
386	/////////////////////////////////////////////////////////////////////////////	537	/////////////////////////////////////////////////////////////////////////////
		538	// decoder
387		539
388	#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	{
389	for (;;) \	554	for (;;)
390	{ \	555	{
391	char ch = *dec->cur; \	556	char ch = *dec->cur;
		557
392	if (ch > 0x20 \	558	if (ch > 0x20
393	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) \	559	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09))
394	break; \	560	break;
		561
395	++dec->cur; \	562	++dec->cur;
396	}	563	}
		564	}
397		565
398	#define ERR(reason) SB dec->err = reason; goto fail; SE	566	#define ERR(reason) SB dec->err = reason; goto fail; SE
		567
399	#define EXPECT_CH(ch) SB \	568	#define EXPECT_CH(ch) SB \
400	if (*dec->cur != ch) \	569	if (*dec->cur != ch) \
401	ERR (# ch " expected"); \	570	ERR (# ch " expected"); \
402	++dec->cur; \	571	++dec->cur; \
403	SE	572	SE
404		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
405	static SV decode_sv (dec_t dec);	577	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		578
412	static signed char decode_hexdigit[256];	579	static signed char decode_hexdigit[256];
413		580
414	static UV	581	static UV
415	decode_4hex (dec_t *dec)	582	decode_4hex (dec_t *dec)
416	{	583	{
417	signed char d1, d2, d3, d4;	584	signed char d1, d2, d3, d4;
		585	unsigned char cur = (unsigned char )dec->cur;
418		586
419	d1 = decode_hexdigit [((unsigned char *)dec->cur) [0]];
420	if (d1 < 0) ERR ("four hexadecimal digits expected");	587	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");	588	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");	589	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");	590	d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected");
427		591
428	dec->cur += 4;	592	dec->cur += 4;
429		593
430	return ((UV)d1) << 12	594	return ((UV)d1) << 12
431	\| ((UV)d2) << 8	595	\| ((UV)d2) << 8
…		…
437	}	601	}
438		602
439	static SV *	603	static SV *
440	decode_str (dec_t *dec)	604	decode_str (dec_t *dec)
441	{	605	{
442	SV *sv = NEWSV (0,2);	606	SV *sv = 0;
443	STRLEN cur = 0;
444	int utf8 = 0;	607	int utf8 = 0;
445		608
446	for (;;)	609	do
447	{	610	{
448	unsigned char ch = (unsigned char )dec->cur;	611	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];
		612	char *cur = buf;
449		613
450	if (ch == '"')	614	do
451	break;
452	else if (ch == '\\')
453	{	615	{
454	switch (*++dec->cur)	616	unsigned char ch = (unsigned char )dec->cur++;
		617
		618	if (ch == '"')
455	{	619	{
456	case '\\':	620	--dec->cur;
457	case '/':	621	break;
458	case '"': APPEND_CH (*dec->cur++); break;	622	}
459		623	else if (ch == '\\')
460	case 'b': APPEND_CH ('\010'); ++dec->cur; break;	624	{
461	case 't': APPEND_CH ('\011'); ++dec->cur; break;	625	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	{	626	{
468	UV lo, hi;	627	case '\\':
469	++dec->cur;	628	case '/':
		629	case '"': cur++ = dec->cur++; break;
470		630
471	hi = decode_4hex (dec);	631	case 'b': ++dec->cur; *cur++ = '\010'; break;
472	if (hi == (UV)-1)	632	case 't': ++dec->cur; *cur++ = '\011'; break;
473	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;
474		636
475	// possibly a surrogate pair	637	case 'u':
476	if (hi >= 0xd800 && hi < 0xdc00)
477	{	638	{
478	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')	639	UV lo, hi;
479	ERR ("illegal surrogate character");
480
481	dec->cur += 2;	640	++dec->cur;
482		641
483	lo = decode_4hex (dec);	642	hi = decode_4hex (dec);
484	if (lo == (UV)-1)	643	if (hi == (UV)-1)
485	goto fail;	644	goto fail;
486		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
487	if (lo < 0xdc00 \|\| lo >= 0xe000)	659	if (lo < 0xdc00 \|\| lo >= 0xe000)
488	ERR ("surrogate pair expected");	660	ERR ("surrogate pair expected");
489		661
490	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;
491	}	675	}
492	else if (lo >= 0xdc00 && lo < 0xe000)
493	ERR ("illegal surrogate character");
494
495	if (hi >= 0x80)
496	{	676	break;
497	utf8 = 1;
498		677
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	678	default:
503	APPEND_CH (hi);	679	--dec->cur;
		680	ERR ("illegal backslash escape sequence in string");
504	}	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");
505	break;	708	else
		709	ERR ("invalid character encountered while parsing JSON string");
506	}	710	}
507	}	711	}
508	else if (ch >= 0x20 && ch <= 0x7f)	712	while (cur < buf + SHORT_STRING_LEN);
509	APPEND_CH (*dec->cur++);	713
510	else if (ch >= 0x80)	714	{
		715	STRLEN len = cur - buf;
		716
		717	if (sv)
511	{	718	{
512	STRLEN clen;	719	SvGROW (sv, SvCUR (sv) + len + 1);
513	UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY);	720	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
514	if (clen < 0)	721	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	}	722	}
521	else	723	else
522	ERR ("invalid character encountered");	724	sv = newSVpvn (buf, len);
523	}	725	}
		726	}
		727	while (*dec->cur != '"');
524		728
525	++dec->cur;	729	++dec->cur;
526		730
		731	if (sv)
		732	{
527	SvPOK_only (sv);	733	SvPOK_only (sv);
528
529	SvCUR_set (sv, cur);
530	*SvEND (sv) = 0;	734	*SvEND (sv) = 0;
531		735
532	if (utf8)	736	if (utf8)
533	SvUTF8_on (sv);	737	SvUTF8_on (sv);
		738	}
		739	else
		740	sv = newSVpvn ("", 0);
534		741
535	return sv;	742	return sv;
536		743
537	fail:	744	fail:
538	SvREFCNT_dec (sv);
539	return 0;	745	return 0;
540	}	746	}
541		747
542	static SV *	748	static SV *
543	decode_num (dec_t *dec)	749	decode_num (dec_t *dec)
…		…
553	{	759	{
554	++dec->cur;	760	++dec->cur;
555	if (dec->cur >= '0' && dec->cur <= '9')	761	if (dec->cur >= '0' && dec->cur <= '9')
556	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)");
557	}	763	}
558		764	else if (dec->cur < '0' \|\| dec->cur > '9')
559	// int	765	ERR ("malformed number (no digits after initial minus)");
		766	else
		767	do
		768	{
		769	++dec->cur;
		770	}
560	while (dec->cur >= '0' && dec->cur <= '9')	771	while (dec->cur >= '0' && dec->cur <= '9');
561	++dec->cur;
562		772
563	// [frac]	773	// [frac]
564	if (*dec->cur == '.')	774	if (*dec->cur == '.')
565	{	775	{
566	is_nv = 1;	776	++dec->cur;
		777
		778	if (dec->cur < '0' \|\| dec->cur > '9')
		779	ERR ("malformed number (no digits after decimal point)");
567		780
568	do	781	do
569	{	782	{
570	++dec->cur;	783	++dec->cur;
571	}	784	}
572	while (dec->cur >= '0' && dec->cur <= '9');	785	while (dec->cur >= '0' && dec->cur <= '9');
		786
		787	is_nv = 1;
573	}	788	}
574		789
575	// [exp]	790	// [exp]
576	if (dec->cur == 'e' \|\| dec->cur == 'E')	791	if (dec->cur == 'e' \|\| dec->cur == 'E')
577	{	792	{
578	is_nv = 1;
579
580	++dec->cur;	793	++dec->cur;
		794
581	if (dec->cur == '-' \|\| dec->cur == '+')	795	if (dec->cur == '-' \|\| dec->cur == '+')
582	++dec->cur;	796	++dec->cur;
583		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	}
584	while (dec->cur >= '0' && dec->cur <= '9')	805	while (dec->cur >= '0' && dec->cur <= '9');
585	++dec->cur;	806
		807	is_nv = 1;
586	}	808	}
587		809
588	if (!is_nv)	810	if (!is_nv)
589	{	811	{
590	UV uv;	812	UV uv;
…		…
608	static SV *	830	static SV *
609	decode_av (dec_t *dec)	831	decode_av (dec_t *dec)
610	{	832	{
611	AV *av = newAV ();	833	AV *av = newAV ();
612		834
		835	DEC_INC_DEPTH;
		836	decode_ws (dec);
		837
		838	if (*dec->cur == ']')
		839	++dec->cur;
		840	else
613	for (;;)	841	for (;;)
614	{	842	{
615	SV *value;	843	SV *value;
616		844
617	value = decode_sv (dec);	845	value = decode_sv (dec);
618	if (!value)	846	if (!value)
619	goto fail;	847	goto fail;
620		848
621	av_push (av, value);	849	av_push (av, value);
622		850
623	WS;	851	decode_ws (dec);
624		852
625	if (*dec->cur == ']')	853	if (*dec->cur == ']')
626	{	854	{
627	++dec->cur;	855	++dec->cur;
628	break;	856	break;
		857	}
629	}	858
630
631	if (*dec->cur != ',')	859	if (*dec->cur != ',')
632	ERR (", or ] expected while parsing array");	860	ERR (", or ] expected while parsing array");
633		861
634	++dec->cur;	862	++dec->cur;
635	}	863	}
636		864
		865	DEC_DEC_DEPTH;
637	return newRV_noinc ((SV *)av);	866	return newRV_noinc ((SV *)av);
638		867
639	fail:	868	fail:
640	SvREFCNT_dec (av);	869	SvREFCNT_dec (av);
		870	DEC_DEC_DEPTH;
641	return 0;	871	return 0;
642	}	872	}
643		873
644	static SV *	874	static SV *
645	decode_hv (dec_t *dec)	875	decode_hv (dec_t *dec)
646	{	876	{
647	HV *hv = newHV ();	877	HV *hv = newHV ();
648		878
		879	DEC_INC_DEPTH;
		880	decode_ws (dec);
		881
		882	if (*dec->cur == '}')
		883	++dec->cur;
		884	else
649	for (;;)	885	for (;;)
650	{	886	{
651	SV key, value;	887	SV key, value;
652		888
653	WS; EXPECT_CH ('"');	889	decode_ws (dec); EXPECT_CH ('"');
654		890
655	key = decode_str (dec);	891	key = decode_str (dec);
656	if (!key)	892	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;	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;
666	}	902	}
667		903
668	//TODO: optimise
669	hv_store_ent (hv, key, value, 0);	904	hv_store_ent (hv, key, value, 0);
		905	SvREFCNT_dec (key);
670		906
671	WS;	907	decode_ws (dec);
672		908
673	if (*dec->cur == '}')	909	if (*dec->cur == '}')
674	{	910	{
675	++dec->cur;	911	++dec->cur;
676	break;	912	break;
677	}	913	}
678		914
679	if (*dec->cur != ',')	915	if (*dec->cur != ',')
680	ERR (", or } expected while parsing object/hash");	916	ERR (", or } expected while parsing object/hash");
681		917
682	++dec->cur;	918	++dec->cur;
683	}	919	}
684		920
		921	DEC_DEC_DEPTH;
685	return newRV_noinc ((SV *)hv);	922	return newRV_noinc ((SV *)hv);
686		923
687	fail:	924	fail:
688	SvREFCNT_dec (hv);	925	SvREFCNT_dec (hv);
		926	DEC_DEC_DEPTH;
689	return 0;	927	return 0;
690	}	928	}
691		929
692	static SV *	930	static SV *
693	decode_sv (dec_t *dec)	931	decode_sv (dec_t *dec)
694	{	932	{
695	WS;	933	decode_ws (dec);
696	switch (*dec->cur)	934	switch (*dec->cur)
697	{	935	{
698	case '"': ++dec->cur; return decode_str (dec);	936	case '"': ++dec->cur; return decode_str (dec);
699	case '[': ++dec->cur; return decode_av (dec);	937	case '[': ++dec->cur; return decode_av (dec);
700	case '{': ++dec->cur; return decode_hv (dec);	938	case '{': ++dec->cur; return decode_hv (dec);
…		…
728		966
729	case 'n':	967	case 'n':
730	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	968	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
731	{	969	{
732	dec->cur += 4;	970	dec->cur += 4;
733	return newSViv (1);	971	return newSVsv (&PL_sv_undef);
734	}	972	}
735	else	973	else
736	ERR ("'null' expected");	974	ERR ("'null' expected");
737		975
738	break;	976	break;
739		977
740	default:	978	default:
741	ERR ("malformed json string");	979	ERR ("malformed JSON string, neither array, object, number, string or atom");
742	break;	980	break;
743	}	981	}
744		982
745	fail:	983	fail:
746	return 0;	984	return 0;
747	}	985	}
748		986
749	static SV *	987	static SV *
750	decode_json (SV *string, UV flags)	988	decode_json (SV string, U32 flags, UV offset_return)
751	{	989	{
		990	dec_t dec;
		991	UV offset;
752	SV *sv;	992	SV *sv;
753		993
		994	SvGETMAGIC (string);
		995	SvUPGRADE (string, SVt_PV);
		996
754	if (!(flags & F_UTF8))	997	if (flags & F_UTF8)
		998	sv_utf8_downgrade (string, 0);
		999	else
755	sv_utf8_upgrade (string);	1000	sv_utf8_upgrade (string);
756		1001
757	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1002	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
758		1003
759	dec_t dec;
760	dec.flags = flags;	1004	dec.flags = flags;
761	dec.cur = SvPVX (string);	1005	dec.cur = SvPVX (string);
762	dec.end = SvEND (string);	1006	dec.end = SvEND (string);
763	dec.err = 0;	1007	dec.err = 0;
		1008	dec.depth = 0;
		1009	dec.maxdepth = DEC_DEPTH (dec.flags);
764		1010
765	*dec.end = 1; // invalid anywhere	1011	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
766	sv = decode_sv (&dec);	1012	sv = decode_sv (&dec);
767	*dec.end = 0;	1013
		1014	if (offset_return \|\| !sv)
		1015	{
		1016	offset = dec.flags & F_UTF8
		1017	? dec.cur - SvPVX (string)
		1018	: utf8_distance (dec.cur, SvPVX (string));
		1019
		1020	if (offset_return)
		1021	*offset_return = offset;
		1022	}
		1023	else
		1024	{
		1025	// check for trailing garbage
		1026	decode_ws (&dec);
		1027
		1028	if (*dec.cur)
		1029	{
		1030	dec.err = "garbage after JSON object";
		1031	SvREFCNT_dec (sv);
		1032	sv = 0;
		1033	}
		1034	}
768		1035
769	if (!sv)	1036	if (!sv)
770	{	1037	{
771	IV offset = utf8_distance (dec.cur, SvPVX (string));
772	SV *uni = sv_newmortal ();	1038	SV *uni = sv_newmortal ();
773		1039
		1040	// horrible hack to silence warning inside pv_uni_display
		1041	COP cop = *PL_curcop;
		1042	cop.cop_warnings = pWARN_NONE;
		1043	ENTER;
		1044	SAVEVPTR (PL_curcop);
		1045	PL_curcop = &cop;
774	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1046	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
		1047	LEAVE;
		1048
775	croak ("%s, at character %d (%s)",	1049	croak ("%s, at character offset %d [\"%s\"]",
776	dec.err,	1050	dec.err,
777	(int)offset,	1051	(int)offset,
778	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1052	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
779	}	1053	}
780		1054
781	sv = sv_2mortal (sv);	1055	sv = sv_2mortal (sv);
782		1056
783	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))	1057	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)");	1058	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
785		1059
786	return sv;	1060	return sv;
787	}	1061	}
788		1062
		1063	/////////////////////////////////////////////////////////////////////////////
		1064	// XS interface functions
		1065
789	MODULE = JSON::XS PACKAGE = JSON::XS	1066	MODULE = JSON::XS PACKAGE = JSON::XS
790		1067
791	BOOT:	1068	BOOT:
792	{	1069	{
793	int i;	1070	int i;
794		1071
795	memset (decode_hexdigit, 0xff, 256);	1072	memset (decode_hexdigit, 0xff, 256);
		1073
796	for (i = 10; i--; )	1074	for (i = 0; i < 256; ++i)
797	decode_hexdigit ['0' + i] = i;	1075	decode_hexdigit [i] =
798		1076	i >= '0' && i <= '9' ? i - '0'
799	for (i = 6; --i; )	1077	: i >= 'a' && i <= 'f' ? i - 'a' + 10
800	{	1078	: i >= 'A' && i <= 'F' ? i - 'A' + 10
801	decode_hexdigit ['a' + i] = 10 + i;	1079	: -1;
802	decode_hexdigit ['A' + i] = 10 + i;
803	}
804		1080
805	json_stash = gv_stashpv ("JSON::XS", 1);	1081	json_stash = gv_stashpv ("JSON::XS", 1);
806	}	1082	}
		1083
		1084	PROTOTYPES: DISABLE
807		1085
808	SV new (char dummy)	1086	SV new (char dummy)
809	CODE:	1087	CODE:
810	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);	1088	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);
811	OUTPUT:	1089	OUTPUT:
812	RETVAL	1090	RETVAL
813		1091
814	SV ascii (SV self, int enable)	1092	SV ascii (SV self, int enable = 1)
815	ALIAS:	1093	ALIAS:
816	ascii = F_ASCII	1094	ascii = F_ASCII
		1095	latin1 = F_LATIN1
817	utf8 = F_UTF8	1096	utf8 = F_UTF8
818	indent = F_INDENT	1097	indent = F_INDENT
819	canonical = F_CANONICAL	1098	canonical = F_CANONICAL
820	space_before = F_SPACE_BEFORE	1099	space_before = F_SPACE_BEFORE
821	space_after = F_SPACE_AFTER	1100	space_after = F_SPACE_AFTER
822	json_rpc = F_JSON_RPC
823	pretty = F_PRETTY	1101	pretty = F_PRETTY
824	allow_nonref = F_ALLOW_NONREF	1102	allow_nonref = F_ALLOW_NONREF
		1103	shrink = F_SHRINK
825	CODE:	1104	CODE:
826	{	1105	{
827	UV *uv = SvJSON (self);	1106	UV *uv = SvJSON (self);
828	if (enable)	1107	if (enable)
829	*uv \|= ix;	1108	*uv \|= ix;
…		…
833	RETVAL = newSVsv (self);	1112	RETVAL = newSVsv (self);
834	}	1113	}
835	OUTPUT:	1114	OUTPUT:
836	RETVAL	1115	RETVAL
837		1116
		1117	SV max_depth (SV self, UV max_depth = 0x80000000UL)
		1118	CODE:
		1119	{
		1120	UV *uv = SvJSON (self);
		1121	UV log2 = 0;
		1122
		1123	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
		1124
		1125	while ((1UL << log2) < max_depth)
		1126	++log2;
		1127
		1128	uv = uv & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
		1129
		1130	RETVAL = newSVsv (self);
		1131	}
		1132	OUTPUT:
		1133	RETVAL
		1134
838	void encode (SV self, SV scalar)	1135	void encode (SV self, SV scalar)
839	PPCODE:	1136	PPCODE:
840	XPUSHs (encode_json (scalar, *SvJSON (self)));	1137	XPUSHs (encode_json (scalar, *SvJSON (self)));
841		1138
842	void decode (SV self, SV jsonstr)	1139	void decode (SV self, SV jsonstr)
843	PPCODE:	1140	PPCODE:
844	XPUSHs (decode_json (jsonstr, *SvJSON (self)));	1141	XPUSHs (decode_json (jsonstr, *SvJSON (self), 0));
		1142
		1143	void decode_prefix (SV self, SV jsonstr)
		1144	PPCODE:
		1145	{
		1146	UV offset;
		1147	EXTEND (SP, 2);
		1148	PUSHs (decode_json (jsonstr, *SvJSON (self), &offset));
		1149	PUSHs (sv_2mortal (newSVuv (offset)));
		1150	}
		1151
		1152	PROTOTYPES: ENABLE
845		1153
846	void to_json (SV *scalar)	1154	void to_json (SV *scalar)
		1155	ALIAS:
		1156	objToJson = 0
847	PPCODE:	1157	PPCODE:
848	XPUSHs (encode_json (scalar, F_UTF8));	1158	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));
849		1159
850	void from_json (SV *jsonstr)	1160	void from_json (SV *jsonstr)
		1161	ALIAS:
		1162	jsonToObj = 0
851	PPCODE:	1163	PPCODE:
852	XPUSHs (decode_json (jsonstr, F_UTF8));	1164	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8, 0));
853		1165

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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 1.31 by root, Wed May 9 16:33:53 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 1.31 by root, Wed May 9 16:33:53 2007 UTC