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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.10 by root, Sat Mar 24 01:15:22 2007 UTC vs.
Revision 1.39 by root, Mon Jun 11 03:42:57 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_ALLOW_NONREF 0x00000080	21	#define F_ALLOW_NONREF 0x00000100UL
16	#define F_SHRINK 0x00000100	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 16384 // 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
		42	#if __GNUC__ >= 3
		43	# define expect(expr,value) __builtin_expect ((expr),(value))
		44	# define inline inline
		45	#else
		46	# define expect(expr,value) (expr)
		47	# define inline static
		48	#endif
		49
		50	#define expect_false(expr) expect ((expr) != 0, 0)
		51	#define expect_true(expr) expect ((expr) != 0, 1)
		52
26	static HV *json_stash;	53	static HV *json_stash; // JSON::XS::
		54
		55	/////////////////////////////////////////////////////////////////////////////
		56	// utility functions
		57
		58	static UV *
		59	SvJSON (SV *sv)
		60	{
		61	if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash))
		62	croak ("object is not of type JSON::XS");
		63
		64	return &SvUVX (SvRV (sv));
		65	}
		66
		67	static void
		68	shrink (SV *sv)
		69	{
		70	sv_utf8_downgrade (sv, 1);
		71	if (SvLEN (sv) > SvCUR (sv) + 1)
		72	{
		73	#ifdef SvPV_shrink_to_cur
		74	SvPV_shrink_to_cur (sv);
		75	#elif defined (SvPV_renew)
		76	SvPV_renew (sv, SvCUR (sv) + 1);
		77	#endif
		78	}
		79	}
		80
		81	// decode an utf-8 character and return it, or (UV)-1 in
		82	// case of an error.
		83	// we special-case "safe" characters from U+80 .. U+7FF,
		84	// but use the very good perl function to parse anything else.
		85	// note that we never call this function for a ascii codepoints
		86	inline UV
		87	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)
		88	{
		89	if (expect_false (s[0] > 0xdf \|\| s[0] < 0xc2))
		90	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
		91	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)
		92	{
		93	*clen = 2;
		94	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);
		95	}
		96	else
		97	{
		98	*clen = (STRLEN)-1;
		99	return (UV)-1;
		100	}
		101	}
		102
		103	/////////////////////////////////////////////////////////////////////////////
		104	// encoder
27		105
28	// structure used for encoding JSON	106	// structure used for encoding JSON
29	typedef struct	107	typedef struct
30	{	108	{
31	char *cur;	109	char *cur; // SvPVX (sv) + current output position
32	STRLEN len; // SvLEN (sv)
33	char *end; // SvEND (sv)	110	char *end; // SvEND (sv)
34	SV *sv;	111	SV *sv; // result scalar
35	UV flags;	112	U32 flags; // F_*
36	int max_recurse;	113	U32 indent; // indentation level
37	int indent;	114	U32 maxdepth; // max. indentation/recursion level
38	} enc_t;	115	} enc_t;
39		116
40	// structure used for decoding JSON	117	inline void
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	static void
59	shrink (SV *sv)
60	{
61	sv_utf8_downgrade (sv, 1);
62	#ifdef SvPV_shrink_to_cur
63	SvPV_shrink_to_cur (sv);
64	#endif
65	}
66
67	/////////////////////////////////////////////////////////////////////////////
68
69	static void
70	need (enc_t *enc, STRLEN len)	118	need (enc_t *enc, STRLEN len)
71	{	119	{
72	if (enc->cur + len >= enc->end)	120	if (expect_false (enc->cur + len >= enc->end))
73	{	121	{
74	STRLEN cur = enc->cur - SvPVX (enc->sv);	122	STRLEN cur = enc->cur - SvPVX (enc->sv);
75	SvGROW (enc->sv, cur + len + 1);	123	SvGROW (enc->sv, cur + len + 1);
76	enc->cur = SvPVX (enc->sv) + cur;	124	enc->cur = SvPVX (enc->sv) + cur;
77	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv);	125	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
78	}	126	}
79	}	127	}
80		128
81	static void	129	inline void
82	encode_ch (enc_t *enc, char ch)	130	encode_ch (enc_t *enc, char ch)
83	{	131	{
84	need (enc, 1);	132	need (enc, 1);
85	*enc->cur++ = ch;	133	*enc->cur++ = ch;
86	}	134	}
…		…
94		142
95	while (str < end)	143	while (str < end)
96	{	144	{
97	unsigned char ch = (unsigned char )str;	145	unsigned char ch = (unsigned char )str;
98		146
99	if (ch >= 0x20 && ch < 0x80) // most common case	147	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
100	{	148	{
101	if (ch == '"') // but with slow exceptions	149	if (expect_false (ch == '"')) // but with slow exceptions
102	{	150	{
103	need (enc, len += 1);	151	need (enc, len += 1);
104	*enc->cur++ = '\\';	152	*enc->cur++ = '\\';
105	*enc->cur++ = '"';	153	*enc->cur++ = '"';
106	}	154	}
107	else if (ch == '\\')	155	else if (expect_false (ch == '\\'))
108	{	156	{
109	need (enc, len += 1);	157	need (enc, len += 1);
110	*enc->cur++ = '\\';	158	*enc->cur++ = '\\';
111	*enc->cur++ = '\\';	159	*enc->cur++ = '\\';
112	}	160	}
…		…
130	STRLEN clen;	178	STRLEN clen;
131	UV uch;	179	UV uch;
132		180
133	if (is_utf8)	181	if (is_utf8)
134	{	182	{
135	uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);	183	//uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
		184	uch = decode_utf8 (str, end - str, &clen);
136	if (clen == (STRLEN)-1)	185	if (clen == (STRLEN)-1)
137	croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);	186	croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);
138	}	187	}
139	else	188	else
140	{	189	{
…		…
143	}	192	}
144		193
145	if (uch > 0x10FFFFUL)	194	if (uch > 0x10FFFFUL)
146	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);	195	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
147		196
148	if (uch < 0x80 \|\| enc->flags & F_ASCII)	197	if (uch < 0x80 \|\| enc->flags & F_ASCII \|\| (enc->flags & F_LATIN1 && uch > 0xFF))
149	{	198	{
150	if (uch > 0xFFFFUL)	199	if (uch > 0xFFFFUL)
151	{	200	{
152	need (enc, len += 11);	201	need (enc, len += 11);
153	sprintf (enc->cur, "\\u%04x\\u%04x",	202	sprintf (enc->cur, "\\u%04x\\u%04x",
…		…
167	*enc->cur++ = hexdigit [(uch >> 0) & 15];	216	*enc->cur++ = hexdigit [(uch >> 0) & 15];
168	}	217	}
169		218
170	str += clen;	219	str += clen;
171	}	220	}
		221	else if (enc->flags & F_LATIN1)
		222	{
		223	*enc->cur++ = uch;
		224	str += clen;
		225	}
172	else if (is_utf8)	226	else if (is_utf8)
173	{	227	{
174	need (enc, len += clen);	228	need (enc, len += clen);
175	do	229	do
176	{	230	{
…		…
178	}	232	}
179	while (--clen);	233	while (--clen);
180	}	234	}
181	else	235	else
182	{	236	{
183	need (enc, len += 10); // never more than 11 bytes needed	237	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed
184	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);	238	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
185	++str;	239	++str;
186	}	240	}
187	}	241	}
188	}	242	}
…		…
190		244
191	--len;	245	--len;
192	}	246	}
193	}	247	}
194		248
195	#define INDENT SB \	249	inline void
		250	encode_indent (enc_t *enc)
		251	{
196	if (enc->flags & F_INDENT) \	252	if (enc->flags & F_INDENT)
197	{ \	253	{
198	int i_; \	254	int spaces = enc->indent * INDENT_STEP;
199	need (enc, enc->indent); \
200	for (i_ = enc->indent * 3; i_--; )\
201	encode_ch (enc, ' '); \
202	} \
203	SE
204		255
205	#define SPACE SB need (enc, 1); encode_ch (enc, ' '); SE	256	need (enc, spaces);
206	#define NL SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, '\n'); } SE	257	memset (enc->cur, ' ', spaces);
207	#define COMMA SB \	258	enc->cur += spaces;
		259	}
		260	}
		261
		262	inline void
		263	encode_space (enc_t *enc)
		264	{
		265	need (enc, 1);
208	encode_ch (enc, ','); \	266	encode_ch (enc, ' ');
		267	}
		268
		269	inline void
		270	encode_nl (enc_t *enc)
		271	{
209	if (enc->flags & F_INDENT) \	272	if (enc->flags & F_INDENT)
210	NL; \	273	{
		274	need (enc, 1);
		275	encode_ch (enc, '\n');
		276	}
		277	}
		278
		279	inline void
		280	encode_comma (enc_t *enc)
		281	{
		282	encode_ch (enc, ',');
		283
		284	if (enc->flags & F_INDENT)
		285	encode_nl (enc);
211	else if (enc->flags & F_SPACE_AFTER) \	286	else if (enc->flags & F_SPACE_AFTER)
212	SPACE; \	287	encode_space (enc);
213	SE	288	}
214		289
215	static void encode_sv (enc_t enc, SV sv);	290	static void encode_sv (enc_t enc, SV sv);
216		291
217	static void	292	static void
218	encode_av (enc_t enc, AV av)	293	encode_av (enc_t enc, AV av)
219	{	294	{
220	int i, len = av_len (av);	295	int i, len = av_len (av);
221		296
222	encode_ch (enc, '['); NL;	297	if (enc->indent >= enc->maxdepth)
		298	croak ("data structure too deep (hit recursion limit)");
		299
		300	encode_ch (enc, '['); encode_nl (enc);
223	++enc->indent;	301	++enc->indent;
224		302
225	for (i = 0; i <= len; ++i)	303	for (i = 0; i <= len; ++i)
226	{	304	{
227	INDENT;	305	encode_indent (enc);
228	encode_sv (enc, *av_fetch (av, i, 0));	306	encode_sv (enc, *av_fetch (av, i, 0));
229		307
230	if (i < len)	308	if (i < len)
231	COMMA;	309	encode_comma (enc);
232	}	310	}
233		311
234	NL;	312	encode_nl (enc);
235		313
236	--enc->indent;	314	--enc->indent;
237	INDENT; encode_ch (enc, ']');	315	encode_indent (enc); encode_ch (enc, ']');
238	}	316	}
239		317
240	static void	318	static void
241	encode_he (enc_t enc, HE he)	319	encode_he (enc_t enc, HE he)
242	{	320	{
…		…
256	else	334	else
257	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	335	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
258		336
259	encode_ch (enc, '"');	337	encode_ch (enc, '"');
260		338
261	if (enc->flags & F_SPACE_BEFORE) SPACE;	339	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);
262	encode_ch (enc, ':');	340	encode_ch (enc, ':');
263	if (enc->flags & F_SPACE_AFTER ) SPACE;	341	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);
264	encode_sv (enc, HeVAL (he));	342	encode_sv (enc, HeVAL (he));
265	}	343	}
266		344
267	// compare hash entries, used when all keys are bytestrings	345	// compare hash entries, used when all keys are bytestrings
268	static int	346	static int
…		…
274	HE b = (HE **)b_;	352	HE b = (HE **)b_;
275		353
276	STRLEN la = HeKLEN (a);	354	STRLEN la = HeKLEN (a);
277	STRLEN lb = HeKLEN (b);	355	STRLEN lb = HeKLEN (b);
278		356
279	if (!(cmp == memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))	357	if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))
280	cmp = la < lb ? -1 : la == lb ? 0 : 1;	358	cmp = la - lb;
281		359
282	return cmp;	360	return cmp;
283	}	361	}
284		362
285	// compare hash entries, used when some keys are sv's or utf-x	363	// compare hash entries, used when some keys are sv's or utf-x
…		…
292	static void	370	static void
293	encode_hv (enc_t enc, HV hv)	371	encode_hv (enc_t enc, HV hv)
294	{	372	{
295	int count, i;	373	int count, i;
296		374
		375	if (enc->indent >= enc->maxdepth)
		376	croak ("data structure too deep (hit recursion limit)");
		377
297	encode_ch (enc, '{'); NL; ++enc->indent;	378	encode_ch (enc, '{'); encode_nl (enc); ++enc->indent;
298		379
299	if ((count = hv_iterinit (hv)))	380	if ((count = hv_iterinit (hv)))
300	{	381	{
301	// for canonical output we have to sort by keys first	382	// for canonical output we have to sort by keys first
302	// actually, this is mostly due to the stupid so-called	383	// actually, this is mostly due to the stupid so-called
303	// security workaround added somewhere in 5.8.x.	384	// security workaround added somewhere in 5.8.x.
304	// that randomises hash orderings	385	// that randomises hash orderings
305	if (enc->flags & F_CANONICAL)	386	if (enc->flags & F_CANONICAL)
306	{	387	{
307	HE he, hes [count];
308	int fast = 1;	388	int fast = 1;
		389	HE *he;
		390	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
		391	HE *hes = _alloca (count sizeof (HE));
		392	#else
		393	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode
		394	#endif
309		395
310	i = 0;	396	i = 0;
311	while ((he = hv_iternext (hv)))	397	while ((he = hv_iternext (hv)))
312	{	398	{
313	hes [i++] = he;	399	hes [i++] = he;
…		…
337	LEAVE;	423	LEAVE;
338	}	424	}
339		425
340	for (i = 0; i < count; ++i)	426	for (i = 0; i < count; ++i)
341	{	427	{
342	INDENT;	428	encode_indent (enc);
343	encode_he (enc, hes [i]);	429	encode_he (enc, hes [i]);
344		430
345	if (i < count - 1)	431	if (i < count - 1)
346	COMMA;	432	encode_comma (enc);
347	}	433	}
348		434
349	NL;	435	encode_nl (enc);
350	}	436	}
351	else	437	else
352	{	438	{
353	SV *sv;
354	HE *he = hv_iternext (hv);	439	HE *he = hv_iternext (hv);
355		440
356	for (;;)	441	for (;;)
357	{	442	{
358	INDENT;	443	encode_indent (enc);
359	encode_he (enc, he);	444	encode_he (enc, he);
360		445
361	if (!(he = hv_iternext (hv)))	446	if (!(he = hv_iternext (hv)))
362	break;	447	break;
363		448
364	COMMA;	449	encode_comma (enc);
365	}	450	}
366		451
367	NL;	452	encode_nl (enc);
368	}	453	}
369	}	454	}
370		455
371	--enc->indent; INDENT; encode_ch (enc, '}');	456	--enc->indent; encode_indent (enc); encode_ch (enc, '}');
		457	}
		458
		459	// encode objects, arrays and special \0=false and \1=true values.
		460	static void
		461	encode_rv (enc_t enc, SV sv)
		462	{
		463	svtype svt;
		464
		465	SvGETMAGIC (sv);
		466	svt = SvTYPE (sv);
		467
		468	if (svt == SVt_PVHV)
		469	encode_hv (enc, (HV *)sv);
		470	else if (svt == SVt_PVAV)
		471	encode_av (enc, (AV *)sv);
		472	else if (svt < SVt_PVAV)
		473	{
		474	if (SvNIOK (sv) && SvIV (sv) == 0)
		475	encode_str (enc, "false", 5, 0);
		476	else if (SvNIOK (sv) && SvIV (sv) == 1)
		477	encode_str (enc, "true", 4, 0);
		478	else
		479	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
		480	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		481	}
		482	else
		483	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
		484	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
372	}	485	}
373		486
374	static void	487	static void
375	encode_sv (enc_t enc, SV sv)	488	encode_sv (enc_t enc, SV sv)
376	{	489	{
…		…
384	encode_str (enc, str, len, SvUTF8 (sv));	497	encode_str (enc, str, len, SvUTF8 (sv));
385	encode_ch (enc, '"');	498	encode_ch (enc, '"');
386	}	499	}
387	else if (SvNOKp (sv))	500	else if (SvNOKp (sv))
388	{	501	{
		502	// trust that perl will do the right thing w.r.t. JSON syntax.
389	need (enc, NV_DIG + 32);	503	need (enc, NV_DIG + 32);
390	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);	504	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);
391	enc->cur += strlen (enc->cur);	505	enc->cur += strlen (enc->cur);
392	}	506	}
393	else if (SvIOKp (sv))	507	else if (SvIOKp (sv))
394	{	508	{
395	need (enc, 64);	509	// we assume we can always read an IV as a UV
		510	if (SvUV (sv) & ~(UV)0x7fff)
		511	{
		512	// large integer, use the (rather slow) snprintf way.
		513	need (enc, sizeof (UV) * 3);
396	enc->cur +=	514	enc->cur +=
397	SvIsUV(sv)	515	SvIsUV(sv)
398	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))	516	? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv))
399	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));	517	: snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv));
		518	}
		519	else
		520	{
		521	// optimise the "small number case"
		522	// code will likely be branchless and use only a single multiplication
		523	I32 i = SvIV (sv);
		524	U32 u;
		525	char digit, nz = 0;
		526
		527	need (enc, 6);
		528
		529	*enc->cur = '-'; enc->cur += i < 0 ? 1 : 0;
		530	u = i < 0 ? -i : i;
		531
		532	// convert to 4.28 fixed-point representation
		533	u = u * ((0xfffffff + 10000) / 10000); // 10**5, 5 fractional digits
		534
		535	// now output digit by digit, each time masking out the integer part
		536	// and multiplying by 5 while moving the decimal point one to the right,
		537	// resulting in a net multiplication by 10.
		538	// we always write the digit to memory but conditionally increment
		539	// the pointer, to ease the usage of conditional move instructions.
		540	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffff) 5;
		541	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffff) 5;
		542	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffff) 5;
		543	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffff) 5;
		544	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'
		545	}
400	}	546	}
401	else if (SvROK (sv))	547	else if (SvROK (sv))
402	{	548	encode_rv (enc, SvRV (sv));
403	SV *rv = SvRV (sv);
404
405	if (!--enc->max_recurse)
406	croak ("data structure too deep (hit recursion limit)");
407
408	switch (SvTYPE (rv))
409	{
410	case SVt_PVAV: encode_av (enc, (AV *)rv); break;
411	case SVt_PVHV: encode_hv (enc, (HV *)rv); break;
412
413	default:
414	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
415	SvPV_nolen (sv));
416	}
417	}
418	else if (!SvOK (sv))	549	else if (!SvOK (sv))
419	encode_str (enc, "null", 4, 0);	550	encode_str (enc, "null", 4, 0);
420	else	551	else
421	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	552	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
422	SvPV_nolen (sv), SvFLAGS (sv));	553	SvPV_nolen (sv), SvFLAGS (sv));
423	}	554	}
424		555
425	static SV *	556	static SV *
426	encode_json (SV *scalar, UV flags)	557	encode_json (SV *scalar, U32 flags)
427	{	558	{
		559	enc_t enc;
		560
428	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))	561	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))
429	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	562	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
430		563
431	enc_t enc;
432	enc.flags = flags;	564	enc.flags = flags;
433	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	565	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
434	enc.cur = SvPVX (enc.sv);	566	enc.cur = SvPVX (enc.sv);
435	enc.end = SvEND (enc.sv);	567	enc.end = SvEND (enc.sv);
436	enc.max_recurse = 0;
437	enc.indent = 0;	568	enc.indent = 0;
		569	enc.maxdepth = DEC_DEPTH (flags);
438		570
439	SvPOK_only (enc.sv);	571	SvPOK_only (enc.sv);
440	encode_sv (&enc, scalar);	572	encode_sv (&enc, scalar);
441		573
		574	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
		575	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
		576
442	if (!(flags & (F_ASCII \| F_UTF8)))	577	if (!(flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
443	SvUTF8_on (enc.sv);	578	SvUTF8_on (enc.sv);
444
445	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
446		579
447	if (enc.flags & F_SHRINK)	580	if (enc.flags & F_SHRINK)
448	shrink (enc.sv);	581	shrink (enc.sv);
449		582
450	return enc.sv;	583	return enc.sv;
451	}	584	}
452		585
453	/////////////////////////////////////////////////////////////////////////////	586	/////////////////////////////////////////////////////////////////////////////
		587	// decoder
454		588
455	#define WS \	589	// structure used for decoding JSON
		590	typedef struct
		591	{
		592	char *cur; // current parser pointer
		593	char *end; // end of input string
		594	const char *err; // parse error, if != 0
		595	U32 flags; // F_*
		596	U32 depth; // recursion depth
		597	U32 maxdepth; // recursion depth limit
		598	} dec_t;
		599
		600	inline void
		601	decode_ws (dec_t *dec)
		602	{
456	for (;;) \	603	for (;;)
457	{ \	604	{
458	char ch = *dec->cur; \	605	char ch = *dec->cur;
		606
459	if (ch > 0x20 \	607	if (ch > 0x20
460	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) \	608	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09))
461	break; \	609	break;
		610
462	++dec->cur; \	611	++dec->cur;
463	}	612	}
		613	}
464		614
465	#define ERR(reason) SB dec->err = reason; goto fail; SE	615	#define ERR(reason) SB dec->err = reason; goto fail; SE
		616
466	#define EXPECT_CH(ch) SB \	617	#define EXPECT_CH(ch) SB \
467	if (*dec->cur != ch) \	618	if (*dec->cur != ch) \
468	ERR (# ch " expected"); \	619	ERR (# ch " expected"); \
469	++dec->cur; \	620	++dec->cur; \
470	SE	621	SE
471		622
		623	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")
		624	#define DEC_DEC_DEPTH --dec->depth
		625
472	static SV decode_sv (dec_t dec);	626	static SV decode_sv (dec_t dec);
473		627
474	static signed char decode_hexdigit[256];	628	static signed char decode_hexdigit[256];
475		629
476	static UV	630	static UV
477	decode_4hex (dec_t *dec)	631	decode_4hex (dec_t *dec)
478	{	632	{
479	signed char d1, d2, d3, d4;	633	signed char d1, d2, d3, d4;
		634	unsigned char cur = (unsigned char )dec->cur;
480		635
481	d1 = decode_hexdigit [((unsigned char *)dec->cur) [0]];	636	d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("four hexadecimal digits expected");
482	if (d1 < 0) ERR ("four hexadecimal digits expected");	637	d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("four hexadecimal digits expected");
483	d2 = decode_hexdigit [((unsigned char *)dec->cur) [1]];	638	d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("four hexadecimal digits expected");
484	if (d2 < 0) ERR ("four hexadecimal digits expected");	639	d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("four hexadecimal digits expected");
485	d3 = decode_hexdigit [((unsigned char *)dec->cur) [2]];
486	if (d3 < 0) ERR ("four hexadecimal digits expected");
487	d4 = decode_hexdigit [((unsigned char *)dec->cur) [3]];
488	if (d4 < 0) ERR ("four hexadecimal digits expected");
489		640
490	dec->cur += 4;	641	dec->cur += 4;
491		642
492	return ((UV)d1) << 12	643	return ((UV)d1) << 12
493	\| ((UV)d2) << 8	644	\| ((UV)d2) << 8
…		…
496		647
497	fail:	648	fail:
498	return (UV)-1;	649	return (UV)-1;
499	}	650	}
500		651
501	#define APPEND_GROW(n) SB \
502	if (cur + (n) >= end) \
503	{ \
504	STRLEN ofs = cur - SvPVX (sv); \
505	SvGROW (sv, ofs + (n) + 1); \
506	cur = SvPVX (sv) + ofs; \
507	end = SvEND (sv); \
508	} \
509	SE
510
511	#define APPEND_CH(ch) SB \
512	APPEND_GROW (1); \
513	*cur++ = (ch); \
514	SE
515
516	static SV *	652	static SV *
517	decode_str (dec_t *dec)	653	decode_str (dec_t *dec)
518	{	654	{
519	SV *sv = NEWSV (0,2);	655	SV *sv = 0;
520	int utf8 = 0;	656	int utf8 = 0;
521	char *cur = SvPVX (sv);	657	char *dec_cur = dec->cur;
522	char *end = SvEND (sv);
523		658
524	for (;;)	659	do
525	{	660	{
526	unsigned char ch = (unsigned char )dec->cur;	661	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];
		662	char *cur = buf;
527		663
528	if (ch == '"')	664	do
529	break;
530	else if (ch == '\\')
531	{	665	{
532	switch (*++dec->cur)	666	unsigned char ch = (unsigned char )dec_cur++;
		667
		668	if (expect_false (ch == '"'))
533	{	669	{
534	case '\\':	670	--dec_cur;
535	case '/':	671	break;
536	case '"': APPEND_CH (*dec->cur++); break;	672	}
537		673	else if (expect_false (ch == '\\'))
538	case 'b': APPEND_CH ('\010'); ++dec->cur; break;	674	{
539	case 't': APPEND_CH ('\011'); ++dec->cur; break;	675	switch (*dec_cur)
540	case 'n': APPEND_CH ('\012'); ++dec->cur; break;
541	case 'f': APPEND_CH ('\014'); ++dec->cur; break;
542	case 'r': APPEND_CH ('\015'); ++dec->cur; break;
543
544	case 'u':
545	{	676	{
546	UV lo, hi;	677	case '\\':
547	++dec->cur;	678	case '/':
		679	case '"': cur++ = dec_cur++; break;
548		680
549	hi = decode_4hex (dec);	681	case 'b': ++dec_cur; *cur++ = '\010'; break;
550	if (hi == (UV)-1)	682	case 't': ++dec_cur; *cur++ = '\011'; break;
551	goto fail;	683	case 'n': ++dec_cur; *cur++ = '\012'; break;
		684	case 'f': ++dec_cur; *cur++ = '\014'; break;
		685	case 'r': ++dec_cur; *cur++ = '\015'; break;
552		686
553	// possibly a surrogate pair	687	case 'u':
554	if (hi >= 0xd800 && hi < 0xdc00)
555	{	688	{
556	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')	689	UV lo, hi;
557	ERR ("missing low surrogate character in surrogate pair");	690	++dec_cur;
558		691
559	dec->cur += 2;	692	dec->cur = dec_cur;
560
561	lo = decode_4hex (dec);	693	hi = decode_4hex (dec);
		694	dec_cur = dec->cur;
562	if (lo == (UV)-1)	695	if (hi == (UV)-1)
563	goto fail;	696	goto fail;
564		697
		698	// possibly a surrogate pair
		699	if (hi >= 0xd800)
		700	if (hi < 0xdc00)
		701	{
		702	if (dec_cur [0] != '\\' \|\| dec_cur [1] != 'u')
		703	ERR ("missing low surrogate character in surrogate pair");
		704
		705	dec_cur += 2;
		706
		707	dec->cur = dec_cur;
		708	lo = decode_4hex (dec);
		709	dec_cur = dec->cur;
		710	if (lo == (UV)-1)
		711	goto fail;
		712
565	if (lo < 0xdc00 \|\| lo >= 0xe000)	713	if (lo < 0xdc00 \|\| lo >= 0xe000)
566	ERR ("surrogate pair expected");	714	ERR ("surrogate pair expected");
567		715
568	hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000;	716	hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000;
		717	}
		718	else if (hi < 0xe000)
		719	ERR ("missing high surrogate character in surrogate pair");
		720
		721	if (hi >= 0x80)
		722	{
		723	utf8 = 1;
		724
		725	cur = (char *)uvuni_to_utf8_flags (cur, hi, 0);
		726	}
		727	else
		728	*cur++ = hi;
569	}	729	}
570	else if (hi >= 0xdc00 && hi < 0xe000)
571	ERR ("missing high surrogate character in surrogate pair");
572
573	if (hi >= 0x80)
574	{	730	break;
575	utf8 = 1;
576		731
577	APPEND_GROW (4); // at most 4 bytes for 21 bits
578	cur = (char *)uvuni_to_utf8_flags (cur, hi, 0);
579	}
580	else	732	default:
581	APPEND_CH (hi);	733	--dec_cur;
		734	ERR ("illegal backslash escape sequence in string");
582	}	735	}
583	break;	736	}
		737	else if (expect_true (ch >= 0x20 && ch <= 0x7f))
		738	*cur++ = ch;
		739	else if (ch >= 0x80)
		740	{
		741	STRLEN clen;
		742	UV uch;
584		743
585	default:
586	--dec->cur;	744	--dec_cur;
587	ERR ("illegal backslash escape sequence in string");	745
		746	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
		747	if (clen == (STRLEN)-1)
		748	ERR ("malformed UTF-8 character in JSON string");
		749
		750	do
		751	cur++ = dec_cur++;
		752	while (--clen);
		753
		754	utf8 = 1;
		755	}
		756	else
		757	{
		758	--dec_cur;
		759
		760	if (!ch)
		761	ERR ("unexpected end of string while parsing JSON string");
		762	else
		763	ERR ("invalid character encountered while parsing JSON string");
588	}	764	}
589	}	765	}
590	else if (ch >= 0x20 && ch <= 0x7f)	766	while (cur < buf + SHORT_STRING_LEN);
591	APPEND_CH (*dec->cur++);	767
592	else if (ch >= 0x80)
593	{	768	{
594	STRLEN clen;	769	STRLEN len = cur - buf;
595	UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY);
596	if (clen == (STRLEN)-1)
597	ERR ("malformed UTF-8 character in JSON string");
598		770
599	APPEND_GROW (clen);	771	if (sv)
600	do
601	{	772	{
602	cur++ = dec->cur++;	773	SvGROW (sv, SvCUR (sv) + len + 1);
		774	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
		775	SvCUR_set (sv, SvCUR (sv) + len);
603	}	776	}
604	while (--clen);
605
606	utf8 = 1;
607	}
608	else if (dec->cur == dec->end)
609	ERR ("unexpected end of string while parsing json string");
610	else	777	else
611	ERR ("invalid character encountered");	778	sv = newSVpvn (buf, len);
612	}	779	}
		780	}
		781	while (*dec_cur != '"');
613		782
614	++dec->cur;	783	++dec_cur;
615		784
616	SvCUR_set (sv, cur - SvPVX (sv));	785	if (sv)
617		786	{
618	SvPOK_only (sv);	787	SvPOK_only (sv);
619	*SvEND (sv) = 0;	788	*SvEND (sv) = 0;
620		789
621	if (utf8)	790	if (utf8)
622	SvUTF8_on (sv);	791	SvUTF8_on (sv);
		792	}
		793	else
		794	sv = newSVpvn ("", 0);
623		795
624	if (dec->flags & F_SHRINK)	796	dec->cur = dec_cur;
625	shrink (sv);
626
627	return sv;	797	return sv;
628		798
629	fail:	799	fail:
630	SvREFCNT_dec (sv);	800	dec->cur = dec_cur;
631	return 0;	801	return 0;
632	}	802	}
633		803
634	static SV *	804	static SV *
635	decode_num (dec_t *dec)	805	decode_num (dec_t *dec)
…		…
693	is_nv = 1;	863	is_nv = 1;
694	}	864	}
695		865
696	if (!is_nv)	866	if (!is_nv)
697	{	867	{
698	UV uv;	868	// special case the rather common 1..4-digit-int case, assumes 32 bit ints or so
699	int numtype = grok_number (start, dec->cur - start, &uv);	869	if (*start == '-')
700	if (numtype & IS_NUMBER_IN_UV)	870	switch (dec->cur - start)
701	if (numtype & IS_NUMBER_NEG)
702	{	871	{
703	if (uv < (UV)IV_MIN)	872	case 2: return newSViv (-( start [1] - '0' ));
704	return newSViv (-(IV)uv);	873	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));
		874	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
		875	case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
705	}	876	}
		877	else
		878	switch (dec->cur - start)
		879	{
		880	case 1: return newSViv ( start [0] - '0' );
		881	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
		882	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
		883	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
		884	}
		885
		886	{
		887	UV uv;
		888	int numtype = grok_number (start, dec->cur - start, &uv);
		889	if (numtype & IS_NUMBER_IN_UV)
		890	if (numtype & IS_NUMBER_NEG)
		891	{
		892	if (uv < (UV)IV_MIN)
		893	return newSViv (-(IV)uv);
		894	}
706	else	895	else
707	return newSVuv (uv);	896	return newSVuv (uv);
		897	}
708	}	898	}
709		899
710	return newSVnv (Atof (start));	900	return newSVnv (Atof (start));
711		901
712	fail:	902	fail:
…		…
716	static SV *	906	static SV *
717	decode_av (dec_t *dec)	907	decode_av (dec_t *dec)
718	{	908	{
719	AV *av = newAV ();	909	AV *av = newAV ();
720		910
721	WS;	911	DEC_INC_DEPTH;
		912	decode_ws (dec);
		913
722	if (*dec->cur == ']')	914	if (*dec->cur == ']')
723	++dec->cur;	915	++dec->cur;
724	else	916	else
725	for (;;)	917	for (;;)
726	{	918	{
…		…
730	if (!value)	922	if (!value)
731	goto fail;	923	goto fail;
732		924
733	av_push (av, value);	925	av_push (av, value);
734		926
735	WS;	927	decode_ws (dec);
736		928
737	if (*dec->cur == ']')	929	if (*dec->cur == ']')
738	{	930	{
739	++dec->cur;	931	++dec->cur;
740	break;	932	break;
…		…
744	ERR (", or ] expected while parsing array");	936	ERR (", or ] expected while parsing array");
745		937
746	++dec->cur;	938	++dec->cur;
747	}	939	}
748		940
		941	DEC_DEC_DEPTH;
749	return newRV_noinc ((SV *)av);	942	return newRV_noinc ((SV *)av);
750		943
751	fail:	944	fail:
752	SvREFCNT_dec (av);	945	SvREFCNT_dec (av);
		946	DEC_DEC_DEPTH;
753	return 0;	947	return 0;
754	}	948	}
755		949
756	static SV *	950	static SV *
757	decode_hv (dec_t *dec)	951	decode_hv (dec_t *dec)
758	{	952	{
759	HV *hv = newHV ();	953	HV *hv = newHV ();
760		954
761	WS;	955	DEC_INC_DEPTH;
		956	decode_ws (dec);
		957
762	if (*dec->cur == '}')	958	if (*dec->cur == '}')
763	++dec->cur;	959	++dec->cur;
764	else	960	else
765	for (;;)	961	for (;;)
766	{	962	{
767	SV key, value;	963	SV key, value;
768		964
769	WS; EXPECT_CH ('"');	965	decode_ws (dec); EXPECT_CH ('"');
770		966
771	key = decode_str (dec);	967	key = decode_str (dec);
772	if (!key)	968	if (!key)
773	goto fail;	969	goto fail;
774		970
775	WS; EXPECT_CH (':');	971	decode_ws (dec); EXPECT_CH (':');
776		972
777	value = decode_sv (dec);	973	value = decode_sv (dec);
778	if (!value)	974	if (!value)
779	{	975	{
780	SvREFCNT_dec (key);	976	SvREFCNT_dec (key);
781	goto fail;	977	goto fail;
782	}	978	}
783		979
784	//TODO: optimise
785	hv_store_ent (hv, key, value, 0);	980	hv_store_ent (hv, key, value, 0);
		981	SvREFCNT_dec (key);
786		982
787	WS;	983	decode_ws (dec);
788		984
789	if (*dec->cur == '}')	985	if (*dec->cur == '}')
790	{	986	{
791	++dec->cur;	987	++dec->cur;
792	break;	988	break;
…		…
796	ERR (", or } expected while parsing object/hash");	992	ERR (", or } expected while parsing object/hash");
797		993
798	++dec->cur;	994	++dec->cur;
799	}	995	}
800		996
		997	DEC_DEC_DEPTH;
801	return newRV_noinc ((SV *)hv);	998	return newRV_noinc ((SV *)hv);
802		999
803	fail:	1000	fail:
804	SvREFCNT_dec (hv);	1001	SvREFCNT_dec (hv);
		1002	DEC_DEC_DEPTH;
805	return 0;	1003	return 0;
806	}	1004	}
807		1005
808	static SV *	1006	static SV *
809	decode_sv (dec_t *dec)	1007	decode_sv (dec_t *dec)
810	{	1008	{
811	WS;	1009	decode_ws (dec);
812	switch (*dec->cur)	1010	switch (*dec->cur)
813	{	1011	{
814	case '"': ++dec->cur; return decode_str (dec);	1012	case '"': ++dec->cur; return decode_str (dec);
815	case '[': ++dec->cur; return decode_av (dec);	1013	case '[': ++dec->cur; return decode_av (dec);
816	case '{': ++dec->cur; return decode_hv (dec);	1014	case '{': ++dec->cur; return decode_hv (dec);
…		…
852	ERR ("'null' expected");	1050	ERR ("'null' expected");
853		1051
854	break;	1052	break;
855		1053
856	default:	1054	default:
857	ERR ("malformed json string, neither array, object, number, string or atom");	1055	ERR ("malformed JSON string, neither array, object, number, string or atom");
858	break;	1056	break;
859	}	1057	}
860		1058
861	fail:	1059	fail:
862	return 0;	1060	return 0;
863	}	1061	}
864		1062
865	static SV *	1063	static SV *
866	decode_json (SV *string, UV flags)	1064	decode_json (SV string, U32 flags, UV offset_return)
867	{	1065	{
		1066	dec_t dec;
		1067	UV offset;
868	SV *sv;	1068	SV *sv;
		1069
		1070	SvGETMAGIC (string);
		1071	SvUPGRADE (string, SVt_PV);
869		1072
870	if (flags & F_UTF8)	1073	if (flags & F_UTF8)
871	sv_utf8_downgrade (string, 0);	1074	sv_utf8_downgrade (string, 0);
872	else	1075	else
873	sv_utf8_upgrade (string);	1076	sv_utf8_upgrade (string);
874		1077
875	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1078	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
876		1079
877	dec_t dec;
878	dec.flags = flags;	1080	dec.flags = flags;
879	dec.cur = SvPVX (string);	1081	dec.cur = SvPVX (string);
880	dec.end = SvEND (string);	1082	dec.end = SvEND (string);
881	dec.err = 0;	1083	dec.err = 0;
		1084	dec.depth = 0;
		1085	dec.maxdepth = DEC_DEPTH (dec.flags);
882		1086
		1087	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
883	sv = decode_sv (&dec);	1088	sv = decode_sv (&dec);
884		1089
		1090	if (!(offset_return \|\| !sv))
		1091	{
		1092	// check for trailing garbage
		1093	decode_ws (&dec);
		1094
		1095	if (*dec.cur)
		1096	{
		1097	dec.err = "garbage after JSON object";
		1098	SvREFCNT_dec (sv);
		1099	sv = 0;
		1100	}
		1101	}
		1102
		1103	if (offset_return \|\| !sv)
		1104	{
		1105	offset = dec.flags & F_UTF8
		1106	? dec.cur - SvPVX (string)
		1107	: utf8_distance (dec.cur, SvPVX (string));
		1108
		1109	if (offset_return)
		1110	*offset_return = offset;
		1111	}
		1112
885	if (!sv)	1113	if (!sv)
886	{	1114	{
887	IV offset = dec.flags & F_UTF8
888	? dec.cur - SvPVX (string)
889	: utf8_distance (dec.cur, SvPVX (string));
890	SV *uni = sv_newmortal ();	1115	SV *uni = sv_newmortal ();
891		1116
892	// horrible hack to silence warning inside pv_uni_display	1117	// horrible hack to silence warning inside pv_uni_display
893	COP cop = *PL_curcop;	1118	COP cop = *PL_curcop;
894	cop.cop_warnings = pWARN_NONE;	1119	cop.cop_warnings = pWARN_NONE;
…		…
896	SAVEVPTR (PL_curcop);	1121	SAVEVPTR (PL_curcop);
897	PL_curcop = &cop;	1122	PL_curcop = &cop;
898	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1123	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
899	LEAVE;	1124	LEAVE;
900		1125
901	croak ("%s, at character offset %d (%s)",	1126	croak ("%s, at character offset %d [\"%s\"]",
902	dec.err,	1127	dec.err,
903	(int)offset,	1128	(int)offset,
904	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1129	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
905	}	1130	}
906		1131
…		…
910	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1135	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
911		1136
912	return sv;	1137	return sv;
913	}	1138	}
914		1139
		1140	/////////////////////////////////////////////////////////////////////////////
		1141	// XS interface functions
		1142
915	MODULE = JSON::XS PACKAGE = JSON::XS	1143	MODULE = JSON::XS PACKAGE = JSON::XS
916		1144
917	BOOT:	1145	BOOT:
918	{	1146	{
919	int i;	1147	int i;
920		1148
921	memset (decode_hexdigit, 0xff, 256);	1149	memset (decode_hexdigit, 0xff, 256);
		1150
922	for (i = 10; i--; )	1151	for (i = 0; i < 256; ++i)
923	decode_hexdigit ['0' + i] = i;	1152	decode_hexdigit [i] =
924		1153	i >= '0' && i <= '9' ? i - '0'
925	for (i = 7; i--; )	1154	: i >= 'a' && i <= 'f' ? i - 'a' + 10
926	{	1155	: i >= 'A' && i <= 'F' ? i - 'A' + 10
927	decode_hexdigit ['a' + i] = 10 + i;	1156	: -1;
928	decode_hexdigit ['A' + i] = 10 + i;
929	}
930		1157
931	json_stash = gv_stashpv ("JSON::XS", 1);	1158	json_stash = gv_stashpv ("JSON::XS", 1);
932	}	1159	}
933		1160
934	PROTOTYPES: DISABLE	1161	PROTOTYPES: DISABLE
…		…
940	RETVAL	1167	RETVAL
941		1168
942	SV ascii (SV self, int enable = 1)	1169	SV ascii (SV self, int enable = 1)
943	ALIAS:	1170	ALIAS:
944	ascii = F_ASCII	1171	ascii = F_ASCII
		1172	latin1 = F_LATIN1
945	utf8 = F_UTF8	1173	utf8 = F_UTF8
946	indent = F_INDENT	1174	indent = F_INDENT
947	canonical = F_CANONICAL	1175	canonical = F_CANONICAL
948	space_before = F_SPACE_BEFORE	1176	space_before = F_SPACE_BEFORE
949	space_after = F_SPACE_AFTER	1177	space_after = F_SPACE_AFTER
…		…
961	RETVAL = newSVsv (self);	1189	RETVAL = newSVsv (self);
962	}	1190	}
963	OUTPUT:	1191	OUTPUT:
964	RETVAL	1192	RETVAL
965		1193
		1194	SV max_depth (SV self, UV max_depth = 0x80000000UL)
		1195	CODE:
		1196	{
		1197	UV *uv = SvJSON (self);
		1198	UV log2 = 0;
		1199
		1200	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
		1201
		1202	while ((1UL << log2) < max_depth)
		1203	++log2;
		1204
		1205	uv = uv & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
		1206
		1207	RETVAL = newSVsv (self);
		1208	}
		1209	OUTPUT:
		1210	RETVAL
		1211
966	void encode (SV self, SV scalar)	1212	void encode (SV self, SV scalar)
967	PPCODE:	1213	PPCODE:
968	XPUSHs (encode_json (scalar, *SvJSON (self)));	1214	XPUSHs (encode_json (scalar, *SvJSON (self)));
969		1215
970	void decode (SV self, SV jsonstr)	1216	void decode (SV self, SV jsonstr)
971	PPCODE:	1217	PPCODE:
972	XPUSHs (decode_json (jsonstr, *SvJSON (self)));	1218	XPUSHs (decode_json (jsonstr, *SvJSON (self), 0));
		1219
		1220	void decode_prefix (SV self, SV jsonstr)
		1221	PPCODE:
		1222	{
		1223	UV offset;
		1224	EXTEND (SP, 2);
		1225	PUSHs (decode_json (jsonstr, *SvJSON (self), &offset));
		1226	PUSHs (sv_2mortal (newSVuv (offset)));
		1227	}
973		1228
974	PROTOTYPES: ENABLE	1229	PROTOTYPES: ENABLE
975		1230
976	void to_json (SV *scalar)	1231	void to_json (SV *scalar)
		1232	ALIAS:
		1233	objToJson = 0
977	PPCODE:	1234	PPCODE:
978	XPUSHs (encode_json (scalar, F_UTF8));	1235	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));
979		1236
980	void from_json (SV *jsonstr)	1237	void from_json (SV *jsonstr)
		1238	ALIAS:
		1239	jsonToObj = 0
981	PPCODE:	1240	PPCODE:
982	XPUSHs (decode_json (jsonstr, F_UTF8));	1241	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8, 0));
983		1242

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Comparing JSON-XS/XS.xs (file contents): Revision 1.10 by root, Sat Mar 24 01:15:22 2007 UTC vs. Revision 1.39 by root, Mon Jun 11 03:42:57 2007 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.10 by root, Sat Mar 24 01:15:22 2007 UTC vs.
Revision 1.39 by root, Mon Jun 11 03:42:57 2007 UTC