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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.4 by root, Thu Mar 22 21:13:58 2007 UTC vs.
Revision 1.33 by root, Wed May 23 20:26:40 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	const 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 = SvPVX (enc->sv) + SvLEN (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)
…		…
85		131
86	while (str < end)	132	while (str < end)
87	{	133	{
88	unsigned char ch = (unsigned char )str;	134	unsigned char ch = (unsigned char )str;
89		135
90	if (ch == '"')	136	if (ch >= 0x20 && ch < 0x80) // most common case
91	{	137	{
		138	if (ch == '"') // but with slow exceptions
		139	{
92	need (enc, len += 1);	140	need (enc, len += 1);
93	*enc->cur++ = '\\';	141	*enc->cur++ = '\\';
94	*enc->cur++ = '"';	142	*enc->cur++ = '"';
95	++str;
96	}	143	}
97	else if (ch == '\\')	144	else if (ch == '\\')
98	{	145	{
99	need (enc, len += 1);	146	need (enc, len += 1);
100	*enc->cur++ = '\\';	147	*enc->cur++ = '\\';
101	*enc->cur++ = '\\';	148	*enc->cur++ = '\\';
102	++str;
103	}	149	}
104	else if (ch >= 0x20 && ch < 0x80) // most common case	150	else
105	{
106	*enc->cur++ = ch;	151	*enc->cur++ = ch;
107	++str;	152
108	}
109	else if (ch == '\015')
110	{
111	need (enc, len += 1);
112	*enc->cur++ = '\\';
113	*enc->cur++ = 'r';
114	++str;
115	}
116	else if (ch == '\012')
117	{
118	need (enc, len += 1);
119	*enc->cur++ = '\\';
120	*enc->cur++ = 'n';
121	++str;	153	++str;
122	}	154	}
123	else	155	else
124	{	156	{
125	STRLEN clen;	157	switch (ch)
126	UV uch;
127
128	if (is_utf8)
129	{	158	{
130	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;
131	if (clen < 0)	160	case '\011': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 't'; ++str; break;
132	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;
133	}	162	case '\014': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;
134	else	163	case '\015': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;
135	{
136	uch = ch;
137	clen = 1;
138	}
139		164
140	if (uch < 0x80 \|\| enc->flags & F_ASCII)	165	default:
141	{
142	if (uch > 0xFFFFUL)
143	{	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;
		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	{
144	need (enc, len += 11);	190	need (enc, len += 11);
145	sprintf (enc->cur, "\\u%04x\\u%04x",	191	sprintf (enc->cur, "\\u%04x\\u%04x",
146	(uch - 0x10000) / 0x400 + 0xD800,	192	(int)((uch - 0x10000) / 0x400 + 0xD800),
147	(uch - 0x10000) % 0x400 + 0xDC00);	193	(int)((uch - 0x10000) % 0x400 + 0xDC00));
148	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;
		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	}
		224	else
		225	{
		226	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed
		227	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
		228	++str;
		229	}
149	}	230	}
150	else
151	{
152	static char hexdigit [16] = "0123456789abcdef";
153	need (enc, len += 5);
154	*enc->cur++ = '\\';
155	*enc->cur++ = 'u';
156	*enc->cur++ = hexdigit [ uch >> 12 ];
157	*enc->cur++ = hexdigit [(uch >> 8) & 15];
158	*enc->cur++ = hexdigit [(uch >> 4) & 15];
159	*enc->cur++ = hexdigit [(uch >> 0) & 15];
160	}
161
162	str += clen;
163	}
164	else if (is_utf8)
165	{
166	need (enc, len += clen);
167	while (clen--)
168	enc->cur++ = str++;
169	}
170	else
171	{
172	need (enc, 10); // never more than 11 bytes needed
173	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
174	++str;
175	}	231	}
176	}	232	}
177		233
178	--len;	234	--len;
179	}	235	}
180	}	236	}
181		237
182	#define INDENT SB \	238	static void
		239	encode_indent (enc_t *enc)
		240	{
183	if (enc->flags & F_INDENT) \	241	if (enc->flags & F_INDENT)
184	{ \	242	{
185	int i_; \	243	int spaces = enc->indent * INDENT_STEP;
186	need (enc, enc->indent); \
187	for (i_ = enc->indent * 3; i_--; )\
188	encode_ch (enc, ' '); \
189	} \
190	SE
191		244
192	#define SPACE SB need (enc, 1); encode_ch (enc, ' '); SE	245	need (enc, spaces);
193	#define NL SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, '\n'); } SE	246	memset (enc->cur, ' ', spaces);
194	#define COMMA SB \	247	enc->cur += spaces;
		248	}
		249	}
		250
		251	static void
		252	encode_space (enc_t *enc)
		253	{
		254	need (enc, 1);
195	encode_ch (enc, ','); \	255	encode_ch (enc, ' ');
		256	}
		257
		258	static void
		259	encode_nl (enc_t *enc)
		260	{
196	if (enc->flags & F_INDENT) \	261	if (enc->flags & F_INDENT)
197	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);
198	else if (enc->flags & F_SPACE_AFTER) \	275	else if (enc->flags & F_SPACE_AFTER)
199	SPACE; \	276	encode_space (enc);
200	SE	277	}
201		278
202	static void encode_sv (enc_t enc, SV sv);	279	static void encode_sv (enc_t enc, SV sv);
203		280
204	static void	281	static void
205	encode_av (enc_t enc, AV av)	282	encode_av (enc_t enc, AV av)
206	{	283	{
207	int i, len = av_len (av);	284	int i, len = av_len (av);
208		285
209	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);
210	++enc->indent;	290	++enc->indent;
211		291
212	for (i = 0; i <= len; ++i)	292	for (i = 0; i <= len; ++i)
213	{	293	{
214	INDENT;	294	encode_indent (enc);
215	encode_sv (enc, *av_fetch (av, i, 0));	295	encode_sv (enc, *av_fetch (av, i, 0));
216		296
217	if (i < len)	297	if (i < len)
218	COMMA;	298	encode_comma (enc);
219	}	299	}
220		300
221	NL;	301	encode_nl (enc);
222		302
223	--enc->indent;	303	--enc->indent;
224	INDENT; encode_ch (enc, ']');	304	encode_indent (enc); encode_ch (enc, ']');
225	}	305	}
226		306
227	static void	307	static void
228	encode_he (enc_t enc, HE he)	308	encode_he (enc_t enc, HE he)
229	{	309	{
…		…
243	else	323	else
244	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	324	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
245		325
246	encode_ch (enc, '"');	326	encode_ch (enc, '"');
247		327
248	if (enc->flags & F_SPACE_BEFORE) SPACE;	328	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);
249	encode_ch (enc, ':');	329	encode_ch (enc, ':');
250	if (enc->flags & F_SPACE_AFTER ) SPACE;	330	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);
251	encode_sv (enc, HeVAL (he));	331	encode_sv (enc, HeVAL (he));
252	}	332	}
253		333
254	// compare hash entries, used when all keys are bytestrings	334	// compare hash entries, used when all keys are bytestrings
255	static int	335	static int
…		…
261	HE b = (HE **)b_;	341	HE b = (HE **)b_;
262		342
263	STRLEN la = HeKLEN (a);	343	STRLEN la = HeKLEN (a);
264	STRLEN lb = HeKLEN (b);	344	STRLEN lb = HeKLEN (b);
265		345
266	if (!(cmp == memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))	346	if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))
267	cmp = la < lb ? -1 : la == lb ? 0 : 1;	347	cmp = la - lb;
268		348
269	return cmp;	349	return cmp;
270	}	350	}
271		351
272	// 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
…		…
279	static void	359	static void
280	encode_hv (enc_t enc, HV hv)	360	encode_hv (enc_t enc, HV hv)
281	{	361	{
282	int count, i;	362	int count, i;
283		363
		364	if (enc->indent >= enc->maxdepth)
		365	croak ("data structure too deep (hit recursion limit)");
		366
284	encode_ch (enc, '{'); NL; ++enc->indent;	367	encode_ch (enc, '{'); encode_nl (enc); ++enc->indent;
285		368
286	if ((count = hv_iterinit (hv)))	369	if ((count = hv_iterinit (hv)))
287	{	370	{
288	// for canonical output we have to sort by keys first	371	// for canonical output we have to sort by keys first
289	// actually, this is mostly due to the stupid so-called	372	// actually, this is mostly due to the stupid so-called
290	// security workaround added somewhere in 5.8.x.	373	// security workaround added somewhere in 5.8.x.
291	// that randomises hash orderings	374	// that randomises hash orderings
292	if (enc->flags & F_CANONICAL)	375	if (enc->flags & F_CANONICAL)
293	{	376	{
294	HE he, hes [count];
295	int fast = 1;	377	int fast = 1;
		378	HE *he;
		379	#if WIN32
		380	HE *hes = _alloca (count sizeof (HE));
		381	#else
		382	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode
		383	#endif
296		384
297	i = 0;	385	i = 0;
298	while ((he = hv_iternext (hv)))	386	while ((he = hv_iternext (hv)))
299	{	387	{
300	hes [i++] = he;	388	hes [i++] = he;
…		…
306		394
307	if (fast)	395	if (fast)
308	qsort (hes, count, sizeof (HE *), he_cmp_fast);	396	qsort (hes, count, sizeof (HE *), he_cmp_fast);
309	else	397	else
310	{	398	{
311	// hack to disable "use bytes"	399	// hack to forcefully disable "use bytes"
312	COP *oldcop = PL_curcop, cop;	400	COP cop = *PL_curcop;
313	cop.op_private = 0;	401	cop.op_private = 0;
		402
		403	ENTER;
		404	SAVETMPS;
		405
		406	SAVEVPTR (PL_curcop);
314	PL_curcop = &cop;	407	PL_curcop = &cop;
315		408
316	SAVETMPS;
317	qsort (hes, count, sizeof (HE *), he_cmp_slow);	409	qsort (hes, count, sizeof (HE *), he_cmp_slow);
		410
318	FREETMPS;	411	FREETMPS;
319		412	LEAVE;
320	PL_curcop = oldcop;
321	}	413	}
322		414
323	for (i = 0; i < count; ++i)	415	for (i = 0; i < count; ++i)
324	{	416	{
325	INDENT;	417	encode_indent (enc);
326	encode_he (enc, hes [i]);	418	encode_he (enc, hes [i]);
327		419
328	if (i < count - 1)	420	if (i < count - 1)
329	COMMA;	421	encode_comma (enc);
330	}	422	}
331		423
332	NL;	424	encode_nl (enc);
333	}	425	}
334	else	426	else
335	{	427	{
336	SV *sv;
337	HE *he = hv_iternext (hv);	428	HE *he = hv_iternext (hv);
338		429
339	for (;;)	430	for (;;)
340	{	431	{
341	INDENT;	432	encode_indent (enc);
342	encode_he (enc, he);	433	encode_he (enc, he);
343		434
344	if (!(he = hv_iternext (hv)))	435	if (!(he = hv_iternext (hv)))
345	break;	436	break;
346		437
347	COMMA;	438	encode_comma (enc);
348	}	439	}
349		440
350	NL;	441	encode_nl (enc);
351	}	442	}
352	}	443	}
353		444
354	--enc->indent; INDENT; encode_ch (enc, '}');	445	--enc->indent; encode_indent (enc); encode_ch (enc, '}');
		446	}
		447
		448	// encode objects, arrays and special \0=false and \1=true values.
		449	static void
		450	encode_rv (enc_t enc, SV sv)
		451	{
		452	svtype svt;
		453
		454	SvGETMAGIC (sv);
		455	svt = SvTYPE (sv);
		456
		457	if (svt == SVt_PVHV)
		458	encode_hv (enc, (HV *)sv);
		459	else if (svt == SVt_PVAV)
		460	encode_av (enc, (AV *)sv);
		461	else if (svt < SVt_PVAV)
		462	{
		463	if (SvNIOK (sv) && SvIV (sv) == 0)
		464	encode_str (enc, "false", 5, 0);
		465	else if (SvNIOK (sv) && SvIV (sv) == 1)
		466	encode_str (enc, "true", 4, 0);
		467	else
		468	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
		469	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		470	}
		471	else
		472	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
		473	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
355	}	474	}
356		475
357	static void	476	static void
358	encode_sv (enc_t enc, SV sv)	477	encode_sv (enc_t enc, SV sv)
359	{	478	{
…		…
380	SvIsUV(sv)	499	SvIsUV(sv)
381	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))	500	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))
382	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));	501	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));
383	}	502	}
384	else if (SvROK (sv))	503	else if (SvROK (sv))
385	{	504	encode_rv (enc, SvRV (sv));
386	if (!--enc->max_recurse)
387	croak ("data structure too deep (hit recursion limit)");
388
389	sv = SvRV (sv);
390
391	switch (SvTYPE (sv))
392	{
393	case SVt_PVAV: encode_av (enc, (AV *)sv); break;
394	case SVt_PVHV: encode_hv (enc, (HV *)sv); break;
395
396	default:
397	croak ("JSON can only represent references to arrays or hashes");
398	}
399	}
400	else if (!SvOK (sv))	505	else if (!SvOK (sv))
401	encode_str (enc, "null", 4, 0);	506	encode_str (enc, "null", 4, 0);
402	else	507	else
403	croak ("encountered perl type that JSON cannot handle");	508	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
		509	SvPV_nolen (sv), SvFLAGS (sv));
404	}	510	}
405		511
406	static SV *	512	static SV *
407	encode_json (SV *scalar, UV flags)	513	encode_json (SV *scalar, U32 flags)
408	{	514	{
		515	enc_t enc;
		516
409	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))	517	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))
410	croak ("hash- or arraref required (not a simple scalar, use allow_nonref to allow this)");	518	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
411		519
412	enc_t enc;
413	enc.flags = flags;	520	enc.flags = flags;
414	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	521	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
415	enc.cur = SvPVX (enc.sv);	522	enc.cur = SvPVX (enc.sv);
416	enc.end = SvEND (enc.sv);	523	enc.end = SvEND (enc.sv);
417	enc.max_recurse = 0;
418	enc.indent = 0;	524	enc.indent = 0;
		525	enc.maxdepth = DEC_DEPTH (flags);
419		526
420	SvPOK_only (enc.sv);	527	SvPOK_only (enc.sv);
421	encode_sv (&enc, scalar);	528	encode_sv (&enc, scalar);
422		529
		530	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
		531	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
		532
423	if (!(flags & (F_ASCII \| F_UTF8)))	533	if (!(flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
424	SvUTF8_on (enc.sv);	534	SvUTF8_on (enc.sv);
425		535
426	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	536	if (enc.flags & F_SHRINK)
		537	shrink (enc.sv);
		538
427	return enc.sv;	539	return enc.sv;
428	}	540	}
429		541
430	/////////////////////////////////////////////////////////////////////////////	542	/////////////////////////////////////////////////////////////////////////////
		543	// decoder
431		544
432	#define WS \	545	// structure used for decoding JSON
		546	typedef struct
		547	{
		548	char *cur; // current parser pointer
		549	char *end; // end of input string
		550	const char *err; // parse error, if != 0
		551	U32 flags; // F_*
		552	U32 depth; // recursion depth
		553	U32 maxdepth; // recursion depth limit
		554	} dec_t;
		555
		556	static void
		557	decode_ws (dec_t *dec)
		558	{
433	for (;;) \	559	for (;;)
434	{ \	560	{
435	char ch = *dec->cur; \	561	char ch = *dec->cur;
		562
436	if (ch > 0x20 \	563	if (ch > 0x20
437	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) \	564	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09))
438	break; \	565	break;
		566
439	++dec->cur; \	567	++dec->cur;
440	}	568	}
		569	}
441		570
442	#define ERR(reason) SB dec->err = reason; goto fail; SE	571	#define ERR(reason) SB dec->err = reason; goto fail; SE
		572
443	#define EXPECT_CH(ch) SB \	573	#define EXPECT_CH(ch) SB \
444	if (*dec->cur != ch) \	574	if (*dec->cur != ch) \
445	ERR (# ch " expected"); \	575	ERR (# ch " expected"); \
446	++dec->cur; \	576	++dec->cur; \
447	SE	577	SE
448		578
		579	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")
		580	#define DEC_DEC_DEPTH --dec->depth
		581
449	static SV decode_sv (dec_t dec);	582	static SV decode_sv (dec_t dec);
450		583
451	static signed char decode_hexdigit[256];	584	static signed char decode_hexdigit[256];
452		585
453	static UV	586	static UV
454	decode_4hex (dec_t *dec)	587	decode_4hex (dec_t *dec)
455	{	588	{
456	signed char d1, d2, d3, d4;	589	signed char d1, d2, d3, d4;
		590	unsigned char cur = (unsigned char )dec->cur;
457		591
458	d1 = decode_hexdigit [((unsigned char *)dec->cur) [0]];
459	if (d1 < 0) ERR ("four hexadecimal digits expected");	592	d1 = decode_hexdigit [cur [0]]; if (d1 < 0) ERR ("four hexadecimal digits expected");
460	d2 = decode_hexdigit [((unsigned char *)dec->cur) [1]];
461	if (d2 < 0) ERR ("four hexadecimal digits expected");	593	d2 = decode_hexdigit [cur [1]]; if (d2 < 0) ERR ("four hexadecimal digits expected");
462	d3 = decode_hexdigit [((unsigned char *)dec->cur) [2]];
463	if (d3 < 0) ERR ("four hexadecimal digits expected");	594	d3 = decode_hexdigit [cur [2]]; if (d3 < 0) ERR ("four hexadecimal digits expected");
464	d4 = decode_hexdigit [((unsigned char *)dec->cur) [3]];
465	if (d4 < 0) ERR ("four hexadecimal digits expected");	595	d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected");
466		596
467	dec->cur += 4;	597	dec->cur += 4;
468		598
469	return ((UV)d1) << 12	599	return ((UV)d1) << 12
470	\| ((UV)d2) << 8	600	\| ((UV)d2) << 8
…		…
473		603
474	fail:	604	fail:
475	return (UV)-1;	605	return (UV)-1;
476	}	606	}
477		607
478	#define APPEND_GROW(n) SB \
479	if (cur + (n) >= end) \
480	{ \
481	STRLEN ofs = cur - SvPVX (sv); \
482	SvGROW (sv, ofs + (n) + 1); \
483	cur = SvPVX (sv) + ofs; \
484	end = SvEND (sv); \
485	} \
486	SE
487
488	#define APPEND_CH(ch) SB \
489	APPEND_GROW (1); \
490	*cur++ = (ch); \
491	SE
492
493	static SV *	608	static SV *
494	decode_str (dec_t *dec)	609	decode_str (dec_t *dec)
495	{	610	{
496	SV *sv = NEWSV (0,2);	611	SV *sv = 0;
497	int utf8 = 0;	612	int utf8 = 0;
498	char *cur = SvPVX (sv);
499	char *end = SvEND (sv);
500		613
501	for (;;)	614	do
502	{	615	{
503	unsigned char ch = (unsigned char )dec->cur;	616	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];
		617	char *cur = buf;
504		618
505	if (ch == '"')	619	do
506	break;
507	else if (ch == '\\')
508	{	620	{
509	switch (*++dec->cur)	621	unsigned char ch = (unsigned char )dec->cur++;
		622
		623	if (ch == '"')
510	{	624	{
511	case '\\':	625	--dec->cur;
512	case '/':	626	break;
513	case '"': APPEND_CH (*dec->cur++); break;	627	}
514		628	else if (ch == '\\')
515	case 'b': APPEND_CH ('\010'); ++dec->cur; break;	629	{
516	case 't': APPEND_CH ('\011'); ++dec->cur; break;	630	switch (*dec->cur)
517	case 'n': APPEND_CH ('\012'); ++dec->cur; break;
518	case 'f': APPEND_CH ('\014'); ++dec->cur; break;
519	case 'r': APPEND_CH ('\015'); ++dec->cur; break;
520
521	case 'u':
522	{	631	{
523	UV lo, hi;	632	case '\\':
524	++dec->cur;	633	case '/':
		634	case '"': cur++ = dec->cur++; break;
525		635
526	hi = decode_4hex (dec);	636	case 'b': ++dec->cur; *cur++ = '\010'; break;
527	if (hi == (UV)-1)	637	case 't': ++dec->cur; *cur++ = '\011'; break;
528	goto fail;	638	case 'n': ++dec->cur; *cur++ = '\012'; break;
		639	case 'f': ++dec->cur; *cur++ = '\014'; break;
		640	case 'r': ++dec->cur; *cur++ = '\015'; break;
529		641
530	// possibly a surrogate pair	642	case 'u':
531	if (hi >= 0xd800 && hi < 0xdc00)
532	{	643	{
533	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')	644	UV lo, hi;
534	ERR ("illegal surrogate character");
535
536	dec->cur += 2;	645	++dec->cur;
537		646
538	lo = decode_4hex (dec);	647	hi = decode_4hex (dec);
539	if (lo == (UV)-1)	648	if (hi == (UV)-1)
540	goto fail;	649	goto fail;
541		650
		651	// possibly a surrogate pair
		652	if (hi >= 0xd800)
		653	if (hi < 0xdc00)
		654	{
		655	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')
		656	ERR ("missing low surrogate character in surrogate pair");
		657
		658	dec->cur += 2;
		659
		660	lo = decode_4hex (dec);
		661	if (lo == (UV)-1)
		662	goto fail;
		663
542	if (lo < 0xdc00 \|\| lo >= 0xe000)	664	if (lo < 0xdc00 \|\| lo >= 0xe000)
543	ERR ("surrogate pair expected");	665	ERR ("surrogate pair expected");
544		666
545	hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000;	667	hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000;
		668	}
		669	else if (hi < 0xe000)
		670	ERR ("missing high surrogate character in surrogate pair");
		671
		672	if (hi >= 0x80)
		673	{
		674	utf8 = 1;
		675
		676	cur = (char *)uvuni_to_utf8_flags (cur, hi, 0);
		677	}
		678	else
		679	*cur++ = hi;
546	}	680	}
547	else if (lo >= 0xdc00 && lo < 0xe000)
548	ERR ("illegal surrogate character");
549
550	if (hi >= 0x80)
551	{	681	break;
552	utf8 = 1;
553		682
554	APPEND_GROW (4); // at most 4 bytes for 21 bits
555	cur = (char *)uvuni_to_utf8_flags (cur, hi, 0);
556	}
557	else	683	default:
558	APPEND_CH (hi);	684	--dec->cur;
		685	ERR ("illegal backslash escape sequence in string");
559	}	686	}
		687	}
		688	else if (ch >= 0x20 && ch <= 0x7f)
		689	*cur++ = ch;
		690	else if (ch >= 0x80)
		691	{
		692	STRLEN clen;
		693	UV uch;
		694
		695	--dec->cur;
		696
		697	uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen);
		698	if (clen == (STRLEN)-1)
		699	ERR ("malformed UTF-8 character in JSON string");
		700
		701	do
		702	cur++ = dec->cur++;
		703	while (--clen);
		704
		705	utf8 = 1;
		706	}
		707	else
		708	{
		709	--dec->cur;
		710
		711	if (!ch)
		712	ERR ("unexpected end of string while parsing JSON string");
560	break;	713	else
		714	ERR ("invalid character encountered while parsing JSON string");
561	}	715	}
562	}	716	}
563	else if (ch >= 0x20 && ch <= 0x7f)	717	while (cur < buf + SHORT_STRING_LEN);
564	APPEND_CH (*dec->cur++);	718
565	else if (ch >= 0x80)	719	{
		720	STRLEN len = cur - buf;
		721
		722	if (sv)
566	{	723	{
567	STRLEN clen;	724	SvGROW (sv, SvCUR (sv) + len + 1);
568	UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY);	725	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
569	if (clen < 0)	726	SvCUR_set (sv, SvCUR (sv) + len);
570	ERR ("malformed UTF-8 character in string, cannot convert to JSON");
571
572	APPEND_GROW (clen);
573	memcpy (cur, dec->cur, clen);
574	cur += clen;
575	dec->cur += clen;
576	}	727	}
577	else	728	else
578	ERR ("invalid character encountered");	729	sv = newSVpvn (buf, len);
579	}	730	}
		731	}
		732	while (*dec->cur != '"');
580		733
581	++dec->cur;	734	++dec->cur;
582		735
583	SvCUR_set (sv, cur - SvPVX (sv));	736	if (sv)
584		737	{
585	SvPOK_only (sv);	738	SvPOK_only (sv);
586	*SvEND (sv) = 0;	739	*SvEND (sv) = 0;
587		740
588	if (utf8)	741	if (utf8)
589	SvUTF8_on (sv);	742	SvUTF8_on (sv);
		743	}
		744	else
		745	sv = newSVpvn ("", 0);
590		746
591	return sv;	747	return sv;
592		748
593	fail:	749	fail:
594	SvREFCNT_dec (sv);
595	return 0;	750	return 0;
596	}	751	}
597		752
598	static SV *	753	static SV *
599	decode_num (dec_t *dec)	754	decode_num (dec_t *dec)
…		…
609	{	764	{
610	++dec->cur;	765	++dec->cur;
611	if (dec->cur >= '0' && dec->cur <= '9')	766	if (dec->cur >= '0' && dec->cur <= '9')
612	ERR ("malformed number (leading zero must not be followed by another digit)");	767	ERR ("malformed number (leading zero must not be followed by another digit)");
613	}	768	}
614		769	else if (dec->cur < '0' \|\| dec->cur > '9')
615	// int	770	ERR ("malformed number (no digits after initial minus)");
		771	else
		772	do
		773	{
		774	++dec->cur;
		775	}
616	while (dec->cur >= '0' && dec->cur <= '9')	776	while (dec->cur >= '0' && dec->cur <= '9');
617	++dec->cur;
618		777
619	// [frac]	778	// [frac]
620	if (*dec->cur == '.')	779	if (*dec->cur == '.')
621	{	780	{
622	is_nv = 1;	781	++dec->cur;
		782
		783	if (dec->cur < '0' \|\| dec->cur > '9')
		784	ERR ("malformed number (no digits after decimal point)");
623		785
624	do	786	do
625	{	787	{
626	++dec->cur;	788	++dec->cur;
627	}	789	}
628	while (dec->cur >= '0' && dec->cur <= '9');	790	while (dec->cur >= '0' && dec->cur <= '9');
		791
		792	is_nv = 1;
629	}	793	}
630		794
631	// [exp]	795	// [exp]
632	if (dec->cur == 'e' \|\| dec->cur == 'E')	796	if (dec->cur == 'e' \|\| dec->cur == 'E')
633	{	797	{
634	is_nv = 1;
635
636	++dec->cur;	798	++dec->cur;
		799
637	if (dec->cur == '-' \|\| dec->cur == '+')	800	if (dec->cur == '-' \|\| dec->cur == '+')
638	++dec->cur;	801	++dec->cur;
639		802
		803	if (dec->cur < '0' \|\| dec->cur > '9')
		804	ERR ("malformed number (no digits after exp sign)");
		805
		806	do
		807	{
		808	++dec->cur;
		809	}
640	while (dec->cur >= '0' && dec->cur <= '9')	810	while (dec->cur >= '0' && dec->cur <= '9');
641	++dec->cur;	811
		812	is_nv = 1;
642	}	813	}
643		814
644	if (!is_nv)	815	if (!is_nv)
645	{	816	{
646	UV uv;	817	UV uv;
…		…
664	static SV *	835	static SV *
665	decode_av (dec_t *dec)	836	decode_av (dec_t *dec)
666	{	837	{
667	AV *av = newAV ();	838	AV *av = newAV ();
668		839
		840	DEC_INC_DEPTH;
		841	decode_ws (dec);
		842
		843	if (*dec->cur == ']')
		844	++dec->cur;
		845	else
669	for (;;)	846	for (;;)
670	{	847	{
671	SV *value;	848	SV *value;
672		849
673	value = decode_sv (dec);	850	value = decode_sv (dec);
674	if (!value)	851	if (!value)
675	goto fail;	852	goto fail;
676		853
677	av_push (av, value);	854	av_push (av, value);
678		855
679	WS;	856	decode_ws (dec);
680		857
681	if (*dec->cur == ']')	858	if (*dec->cur == ']')
682	{	859	{
683	++dec->cur;	860	++dec->cur;
684	break;	861	break;
		862	}
685	}	863
686
687	if (*dec->cur != ',')	864	if (*dec->cur != ',')
688	ERR (", or ] expected while parsing array");	865	ERR (", or ] expected while parsing array");
689		866
690	++dec->cur;	867	++dec->cur;
691	}	868	}
692		869
		870	DEC_DEC_DEPTH;
693	return newRV_noinc ((SV *)av);	871	return newRV_noinc ((SV *)av);
694		872
695	fail:	873	fail:
696	SvREFCNT_dec (av);	874	SvREFCNT_dec (av);
		875	DEC_DEC_DEPTH;
697	return 0;	876	return 0;
698	}	877	}
699		878
700	static SV *	879	static SV *
701	decode_hv (dec_t *dec)	880	decode_hv (dec_t *dec)
702	{	881	{
703	HV *hv = newHV ();	882	HV *hv = newHV ();
704		883
		884	DEC_INC_DEPTH;
		885	decode_ws (dec);
		886
		887	if (*dec->cur == '}')
		888	++dec->cur;
		889	else
705	for (;;)	890	for (;;)
706	{	891	{
707	SV key, value;	892	SV key, value;
708		893
709	WS; EXPECT_CH ('"');	894	decode_ws (dec); EXPECT_CH ('"');
710		895
711	key = decode_str (dec);	896	key = decode_str (dec);
712	if (!key)	897	if (!key)
713	goto fail;
714
715	WS; EXPECT_CH (':');
716
717	value = decode_sv (dec);
718	if (!value)
719	{
720	SvREFCNT_dec (key);
721	goto fail;	898	goto fail;
		899
		900	decode_ws (dec); EXPECT_CH (':');
		901
		902	value = decode_sv (dec);
		903	if (!value)
		904	{
		905	SvREFCNT_dec (key);
		906	goto fail;
722	}	907	}
723		908
724	//TODO: optimise
725	hv_store_ent (hv, key, value, 0);	909	hv_store_ent (hv, key, value, 0);
		910	SvREFCNT_dec (key);
726		911
727	WS;	912	decode_ws (dec);
728		913
729	if (*dec->cur == '}')	914	if (*dec->cur == '}')
730	{	915	{
731	++dec->cur;	916	++dec->cur;
732	break;	917	break;
733	}	918	}
734		919
735	if (*dec->cur != ',')	920	if (*dec->cur != ',')
736	ERR (", or } expected while parsing object/hash");	921	ERR (", or } expected while parsing object/hash");
737		922
738	++dec->cur;	923	++dec->cur;
739	}	924	}
740		925
		926	DEC_DEC_DEPTH;
741	return newRV_noinc ((SV *)hv);	927	return newRV_noinc ((SV *)hv);
742		928
743	fail:	929	fail:
744	SvREFCNT_dec (hv);	930	SvREFCNT_dec (hv);
		931	DEC_DEC_DEPTH;
745	return 0;	932	return 0;
746	}	933	}
747		934
748	static SV *	935	static SV *
749	decode_sv (dec_t *dec)	936	decode_sv (dec_t *dec)
750	{	937	{
751	WS;	938	decode_ws (dec);
752	switch (*dec->cur)	939	switch (*dec->cur)
753	{	940	{
754	case '"': ++dec->cur; return decode_str (dec);	941	case '"': ++dec->cur; return decode_str (dec);
755	case '[': ++dec->cur; return decode_av (dec);	942	case '[': ++dec->cur; return decode_av (dec);
756	case '{': ++dec->cur; return decode_hv (dec);	943	case '{': ++dec->cur; return decode_hv (dec);
…		…
784		971
785	case 'n':	972	case 'n':
786	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	973	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
787	{	974	{
788	dec->cur += 4;	975	dec->cur += 4;
789	return newSViv (1);	976	return newSVsv (&PL_sv_undef);
790	}	977	}
791	else	978	else
792	ERR ("'null' expected");	979	ERR ("'null' expected");
793		980
794	break;	981	break;
795		982
796	default:	983	default:
797	ERR ("malformed json string");	984	ERR ("malformed JSON string, neither array, object, number, string or atom");
798	break;	985	break;
799	}	986	}
800		987
801	fail:	988	fail:
802	return 0;	989	return 0;
803	}	990	}
804		991
805	static SV *	992	static SV *
806	decode_json (SV *string, UV flags)	993	decode_json (SV string, U32 flags, UV offset_return)
807	{	994	{
		995	dec_t dec;
		996	UV offset;
808	SV *sv;	997	SV *sv;
809		998
		999	SvGETMAGIC (string);
		1000	SvUPGRADE (string, SVt_PV);
		1001
810	if (!(flags & F_UTF8))	1002	if (flags & F_UTF8)
		1003	sv_utf8_downgrade (string, 0);
		1004	else
811	sv_utf8_upgrade (string);	1005	sv_utf8_upgrade (string);
812		1006
813	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1007	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
814		1008
815	dec_t dec;
816	dec.flags = flags;	1009	dec.flags = flags;
817	dec.cur = SvPVX (string);	1010	dec.cur = SvPVX (string);
818	dec.end = SvEND (string);	1011	dec.end = SvEND (string);
819	dec.err = 0;	1012	dec.err = 0;
		1013	dec.depth = 0;
		1014	dec.maxdepth = DEC_DEPTH (dec.flags);
820		1015
821	*dec.end = 1; // invalid anywhere	1016	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
822	sv = decode_sv (&dec);	1017	sv = decode_sv (&dec);
823	*dec.end = 0;	1018
		1019	if (!(offset_return \|\| !sv))
		1020	{
		1021	// check for trailing garbage
		1022	decode_ws (&dec);
		1023
		1024	if (*dec.cur)
		1025	{
		1026	dec.err = "garbage after JSON object";
		1027	SvREFCNT_dec (sv);
		1028	sv = 0;
		1029	}
		1030	}
		1031
		1032	if (offset_return \|\| !sv)
		1033	{
		1034	offset = dec.flags & F_UTF8
		1035	? dec.cur - SvPVX (string)
		1036	: utf8_distance (dec.cur, SvPVX (string));
		1037
		1038	if (offset_return)
		1039	*offset_return = offset;
		1040	}
824		1041
825	if (!sv)	1042	if (!sv)
826	{	1043	{
827	IV offset = utf8_distance (dec.cur, SvPVX (string));
828	SV *uni = sv_newmortal ();	1044	SV *uni = sv_newmortal ();
829		1045
		1046	// horrible hack to silence warning inside pv_uni_display
		1047	COP cop = *PL_curcop;
		1048	cop.cop_warnings = pWARN_NONE;
		1049	ENTER;
		1050	SAVEVPTR (PL_curcop);
		1051	PL_curcop = &cop;
830	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1052	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
		1053	LEAVE;
		1054
831	croak ("%s, at character %d (%s)",	1055	croak ("%s, at character offset %d [\"%s\"]",
832	dec.err,	1056	dec.err,
833	(int)offset,	1057	(int)offset,
834	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1058	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
835	}	1059	}
836		1060
837	sv = sv_2mortal (sv);	1061	sv = sv_2mortal (sv);
838		1062
839	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))	1063	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))
840	croak ("JSON object or array expected (but number, string, true, false or null found, use allow_nonref to allow this)");	1064	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
841		1065
842	return sv;	1066	return sv;
843	}	1067	}
844		1068
		1069	/////////////////////////////////////////////////////////////////////////////
		1070	// XS interface functions
		1071
845	MODULE = JSON::XS PACKAGE = JSON::XS	1072	MODULE = JSON::XS PACKAGE = JSON::XS
846		1073
847	BOOT:	1074	BOOT:
848	{	1075	{
849	int i;	1076	int i;
850		1077
851	memset (decode_hexdigit, 0xff, 256);	1078	memset (decode_hexdigit, 0xff, 256);
		1079
852	for (i = 10; i--; )	1080	for (i = 0; i < 256; ++i)
853	decode_hexdigit ['0' + i] = i;	1081	decode_hexdigit [i] =
854		1082	i >= '0' && i <= '9' ? i - '0'
855	for (i = 7; i--; )	1083	: i >= 'a' && i <= 'f' ? i - 'a' + 10
856	{	1084	: i >= 'A' && i <= 'F' ? i - 'A' + 10
857	decode_hexdigit ['a' + i] = 10 + i;	1085	: -1;
858	decode_hexdigit ['A' + i] = 10 + i;
859	}
860		1086
861	json_stash = gv_stashpv ("JSON::XS", 1);	1087	json_stash = gv_stashpv ("JSON::XS", 1);
862	}	1088	}
863		1089
864	PROTOTYPES: DISABLE	1090	PROTOTYPES: DISABLE
…		…
867	CODE:	1093	CODE:
868	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);	1094	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);
869	OUTPUT:	1095	OUTPUT:
870	RETVAL	1096	RETVAL
871		1097
872	SV ascii (SV self, int enable)	1098	SV ascii (SV self, int enable = 1)
873	ALIAS:	1099	ALIAS:
874	ascii = F_ASCII	1100	ascii = F_ASCII
		1101	latin1 = F_LATIN1
875	utf8 = F_UTF8	1102	utf8 = F_UTF8
876	indent = F_INDENT	1103	indent = F_INDENT
877	canonical = F_CANONICAL	1104	canonical = F_CANONICAL
878	space_before = F_SPACE_BEFORE	1105	space_before = F_SPACE_BEFORE
879	space_after = F_SPACE_AFTER	1106	space_after = F_SPACE_AFTER
880	json_rpc = F_JSON_RPC
881	pretty = F_PRETTY	1107	pretty = F_PRETTY
882	allow_nonref = F_ALLOW_NONREF	1108	allow_nonref = F_ALLOW_NONREF
		1109	shrink = F_SHRINK
883	CODE:	1110	CODE:
884	{	1111	{
885	UV *uv = SvJSON (self);	1112	UV *uv = SvJSON (self);
886	if (enable)	1113	if (enable)
887	*uv \|= ix;	1114	*uv \|= ix;
…		…
891	RETVAL = newSVsv (self);	1118	RETVAL = newSVsv (self);
892	}	1119	}
893	OUTPUT:	1120	OUTPUT:
894	RETVAL	1121	RETVAL
895		1122
		1123	SV max_depth (SV self, UV max_depth = 0x80000000UL)
		1124	CODE:
		1125	{
		1126	UV *uv = SvJSON (self);
		1127	UV log2 = 0;
		1128
		1129	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
		1130
		1131	while ((1UL << log2) < max_depth)
		1132	++log2;
		1133
		1134	uv = uv & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
		1135
		1136	RETVAL = newSVsv (self);
		1137	}
		1138	OUTPUT:
		1139	RETVAL
		1140
896	void encode (SV self, SV scalar)	1141	void encode (SV self, SV scalar)
897	PPCODE:	1142	PPCODE:
898	XPUSHs (encode_json (scalar, *SvJSON (self)));	1143	XPUSHs (encode_json (scalar, *SvJSON (self)));
899		1144
900	void decode (SV self, SV jsonstr)	1145	void decode (SV self, SV jsonstr)
901	PPCODE:	1146	PPCODE:
902	XPUSHs (decode_json (jsonstr, *SvJSON (self)));	1147	XPUSHs (decode_json (jsonstr, *SvJSON (self), 0));
		1148
		1149	void decode_prefix (SV self, SV jsonstr)
		1150	PPCODE:
		1151	{
		1152	UV offset;
		1153	EXTEND (SP, 2);
		1154	PUSHs (decode_json (jsonstr, *SvJSON (self), &offset));
		1155	PUSHs (sv_2mortal (newSVuv (offset)));
		1156	}
903		1157
904	PROTOTYPES: ENABLE	1158	PROTOTYPES: ENABLE
905		1159
906	void to_json (SV *scalar)	1160	void to_json (SV *scalar)
		1161	ALIAS:
		1162	objToJson = 0
907	PPCODE:	1163	PPCODE:
908	XPUSHs (encode_json (scalar, F_UTF8));	1164	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));
909		1165
910	void from_json (SV *jsonstr)	1166	void from_json (SV *jsonstr)
		1167	ALIAS:
		1168	jsonToObj = 0
911	PPCODE:	1169	PPCODE:
912	XPUSHs (decode_json (jsonstr, F_UTF8));	1170	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8, 0));
913		1171

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing JSON-XS/XS.xs (file contents): Revision 1.4 by root, Thu Mar 22 21:13:58 2007 UTC vs. Revision 1.33 by root, Wed May 23 20:26:40 2007 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.4 by root, Thu Mar 22 21:13:58 2007 UTC vs.
Revision 1.33 by root, Wed May 23 20:26:40 2007 UTC