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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.61 by root, Sun Aug 26 21:56:47 2007 UTC vs.
Revision 1.88 by root, Sun Jun 22 12:05:49 2008 UTC

…		…
4		4
5	#include <assert.h>	5	#include <assert.h>
6	#include <string.h>	6	#include <string.h>
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
		9	#include <limits.h>
9	#include <float.h>	10	#include <float.h>
10		11
11	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	12	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
12	# define snprintf _snprintf // C compilers have this in stdio.h	13	# define snprintf _snprintf // C compilers have this in stdio.h
13	#endif	14	#endif
…		…
15	// some old perls do not have this, try to make it work, no	16	// some old perls do not have this, try to make it work, no
16	// guarentees, though. if it breaks, you get to keep the pieces.	17	// guarentees, though. if it breaks, you get to keep the pieces.
17	#ifndef UTF8_MAXBYTES	18	#ifndef UTF8_MAXBYTES
18	# define UTF8_MAXBYTES 13	19	# define UTF8_MAXBYTES 13
19	#endif	20	#endif
		21
		22	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 2)
20		23
21	#define F_ASCII 0x00000001UL	24	#define F_ASCII 0x00000001UL
22	#define F_LATIN1 0x00000002UL	25	#define F_LATIN1 0x00000002UL
23	#define F_UTF8 0x00000004UL	26	#define F_UTF8 0x00000004UL
24	#define F_INDENT 0x00000008UL	27	#define F_INDENT 0x00000008UL
…		…
27	#define F_SPACE_AFTER 0x00000040UL	30	#define F_SPACE_AFTER 0x00000040UL
28	#define F_ALLOW_NONREF 0x00000100UL	31	#define F_ALLOW_NONREF 0x00000100UL
29	#define F_SHRINK 0x00000200UL	32	#define F_SHRINK 0x00000200UL
30	#define F_ALLOW_BLESSED 0x00000400UL	33	#define F_ALLOW_BLESSED 0x00000400UL
31	#define F_CONV_BLESSED 0x00000800UL	34	#define F_CONV_BLESSED 0x00000800UL
32	#define F_MAXDEPTH 0xf8000000UL
33	#define S_MAXDEPTH 27
34	#define F_MAXSIZE 0x01f00000UL	35	#define F_RELAXED 0x00001000UL
35	#define S_MAXSIZE 20	36	#define F_ALLOW_UNKNOWN 0x00002000UL
36	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing	37	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
37		38
38	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
39	#define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE ))
40
41	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	39	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
42	#define F_DEFAULT (9UL << S_MAXDEPTH)
43		40
44	#define INIT_SIZE 32 // initial scalar size to be allocated	41	#define INIT_SIZE 32 // initial scalar size to be allocated
45	#define INDENT_STEP 3 // spaces per indentation level	42	#define INDENT_STEP 3 // spaces per indentation level
46		43
47	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size	44	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
48		45
49	#define SB do {	46	#define SB do {
50	#define SE } while (0)	47	#define SE } while (0)
51		48
52	#if __GNUC__ >= 3	49	#if __GNUC__ >= 3
53	# define expect(expr,value) __builtin_expect ((expr),(value))	50	# define expect(expr,value) __builtin_expect ((expr), (value))
54	# define inline inline	51	# define INLINE static inline
55	#else	52	#else
56	# define expect(expr,value) (expr)	53	# define expect(expr,value) (expr)
57	# define inline static	54	# define INLINE static
58	#endif	55	#endif
59		56
60	#define expect_false(expr) expect ((expr) != 0, 0)	57	#define expect_false(expr) expect ((expr) != 0, 0)
61	#define expect_true(expr) expect ((expr) != 0, 1)	58	#define expect_true(expr) expect ((expr) != 0, 1)
		59
		60	#define IN_RANGE_INC(type,val,beg,end) \
		61	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
		62	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
		63
		64	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"
62		65
63	#ifdef USE_ITHREADS	66	#ifdef USE_ITHREADS
64	# define JSON_SLOW 1	67	# define JSON_SLOW 1
65	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))	68	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))
66	#else	69	#else
…		…
69	#endif	72	#endif
70		73
71	static HV json_stash, json_boolean_stash; // JSON::XS::	74	static HV json_stash, json_boolean_stash; // JSON::XS::
72	static SV json_true, json_false;	75	static SV json_true, json_false;
73		76
		77	enum {
		78	INCR_M_WS = 0, // initial whitespace skipping, must be 0
		79	INCR_M_STR, // inside string
		80	INCR_M_BS, // inside backslash
		81	INCR_M_JSON // outside anything, count nesting
		82	};
		83
		84	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)
		85
74	typedef struct {	86	typedef struct {
75	U32 flags;	87	U32 flags;
		88	U32 max_depth;
		89	STRLEN max_size;
		90
76	SV *cb_object;	91	SV *cb_object;
77	HV *cb_sk_object;	92	HV *cb_sk_object;
		93
		94	// for the incremental parser
		95	SV *incr_text; // the source text so far
		96	STRLEN incr_pos; // the current offset into the text
		97	int incr_nest; // {[]}-nesting level
		98	unsigned char incr_mode;
78	} JSON;	99	} JSON;
		100
		101	INLINE void
		102	json_init (JSON *json)
		103	{
		104	Zero (json, 1, JSON);
		105	json->max_depth = 512;
		106	}
79		107
80	/////////////////////////////////////////////////////////////////////////////	108	/////////////////////////////////////////////////////////////////////////////
81	// utility functions	109	// utility functions
82		110
83	inline void	111	INLINE SV *
		112	get_bool (const char *name)
		113	{
		114	SV *sv = get_sv (name, 1);
		115
		116	SvREADONLY_on (sv);
		117	SvREADONLY_on (SvRV (sv));
		118
		119	return sv;
		120	}
		121
		122	INLINE void
84	shrink (SV *sv)	123	shrink (SV *sv)
85	{	124	{
86	sv_utf8_downgrade (sv, 1);	125	sv_utf8_downgrade (sv, 1);
		126
87	if (SvLEN (sv) > SvCUR (sv) + 1)	127	if (SvLEN (sv) > SvCUR (sv) + 1)
88	{	128	{
89	#ifdef SvPV_shrink_to_cur	129	#ifdef SvPV_shrink_to_cur
90	SvPV_shrink_to_cur (sv);	130	SvPV_shrink_to_cur (sv);
91	#elif defined (SvPV_renew)	131	#elif defined (SvPV_renew)
…		…
97	// decode an utf-8 character and return it, or (UV)-1 in	137	// decode an utf-8 character and return it, or (UV)-1 in
98	// case of an error.	138	// case of an error.
99	// we special-case "safe" characters from U+80 .. U+7FF,	139	// we special-case "safe" characters from U+80 .. U+7FF,
100	// but use the very good perl function to parse anything else.	140	// but use the very good perl function to parse anything else.
101	// note that we never call this function for a ascii codepoints	141	// note that we never call this function for a ascii codepoints
102	inline UV	142	INLINE UV
103	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)	143	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)
104	{	144	{
105	if (expect_false (s[0] > 0xdf \|\| s[0] < 0xc2))	145	if (expect_true (len >= 2
106	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);	146	&& IN_RANGE_INC (char, s[0], 0xc2, 0xdf)
107	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)	147	&& IN_RANGE_INC (char, s[1], 0x80, 0xbf)))
108	{	148	{
109	*clen = 2;	149	*clen = 2;
110	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);	150	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);
111	}	151	}
112	else	152	else
113	{	153	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
114	*clen = (STRLEN)-1;	154	}
115	return (UV)-1;	155
116	}	156	// likewise for encoding, also never called for ascii codepoints
		157	// this function takes advantage of this fact, although current gccs
		158	// seem to optimise the check for >= 0x80 away anyways
		159	INLINE unsigned char *
		160	encode_utf8 (unsigned char *s, UV ch)
		161	{
		162	if (expect_false (ch < 0x000080))
		163	*s++ = ch;
		164	else if (expect_true (ch < 0x000800))
		165	*s++ = 0xc0 \| ( ch >> 6),
		166	*s++ = 0x80 \| ( ch & 0x3f);
		167	else if ( ch < 0x010000)
		168	*s++ = 0xe0 \| ( ch >> 12),
		169	*s++ = 0x80 \| ((ch >> 6) & 0x3f),
		170	*s++ = 0x80 \| ( ch & 0x3f);
		171	else if ( ch < 0x110000)
		172	*s++ = 0xf0 \| ( ch >> 18),
		173	*s++ = 0x80 \| ((ch >> 12) & 0x3f),
		174	*s++ = 0x80 \| ((ch >> 6) & 0x3f),
		175	*s++ = 0x80 \| ( ch & 0x3f);
		176
		177	return s;
117	}	178	}
118		179
119	/////////////////////////////////////////////////////////////////////////////	180	/////////////////////////////////////////////////////////////////////////////
120	// encoder	181	// encoder
121		182
…		…
125	char *cur; // SvPVX (sv) + current output position	186	char *cur; // SvPVX (sv) + current output position
126	char *end; // SvEND (sv)	187	char *end; // SvEND (sv)
127	SV *sv; // result scalar	188	SV *sv; // result scalar
128	JSON json;	189	JSON json;
129	U32 indent; // indentation level	190	U32 indent; // indentation level
130	U32 maxdepth; // max. indentation/recursion level	191	UV limit; // escape character values >= this value when encoding
131	} enc_t;	192	} enc_t;
132		193
133	inline void	194	INLINE void
134	need (enc_t *enc, STRLEN len)	195	need (enc_t *enc, STRLEN len)
135	{	196	{
136	if (expect_false (enc->cur + len >= enc->end))	197	if (expect_false (enc->cur + len >= enc->end))
137	{	198	{
138	STRLEN cur = enc->cur - SvPVX (enc->sv);	199	STRLEN cur = enc->cur - SvPVX (enc->sv);
…		…
140	enc->cur = SvPVX (enc->sv) + cur;	201	enc->cur = SvPVX (enc->sv) + cur;
141	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	202	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
142	}	203	}
143	}	204	}
144		205
145	inline void	206	INLINE void
146	encode_ch (enc_t *enc, char ch)	207	encode_ch (enc_t *enc, char ch)
147	{	208	{
148	need (enc, 1);	209	need (enc, 1);
149	*enc->cur++ = ch;	210	*enc->cur++ = ch;
150	}	211	}
…		…
204	{	265	{
205	uch = ch;	266	uch = ch;
206	clen = 1;	267	clen = 1;
207	}	268	}
208		269
209	if (uch > 0x10FFFFUL)	270	if (uch < 0x80/0x20/ \|\| uch >= enc->limit)
210	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
211
212	if (uch < 0x80 \|\| enc->json.flags & F_ASCII \|\| (enc->json.flags & F_LATIN1 && uch > 0xFF))
213	{	271	{
214	if (uch > 0xFFFFUL)	272	if (uch >= 0x10000UL)
215	{	273	{
		274	if (uch >= 0x110000UL)
		275	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
		276
216	need (enc, len += 11);	277	need (enc, len += 11);
217	sprintf (enc->cur, "\\u%04x\\u%04x",	278	sprintf (enc->cur, "\\u%04x\\u%04x",
218	(int)((uch - 0x10000) / 0x400 + 0xD800),	279	(int)((uch - 0x10000) / 0x400 + 0xD800),
219	(int)((uch - 0x10000) % 0x400 + 0xDC00));	280	(int)((uch - 0x10000) % 0x400 + 0xDC00));
220	enc->cur += 12;	281	enc->cur += 12;
…		…
248	while (--clen);	309	while (--clen);
249	}	310	}
250	else	311	else
251	{	312	{
252	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed	313	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed
253	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);	314	enc->cur = encode_utf8 (enc->cur, uch);
254	++str;	315	++str;
255	}	316	}
256	}	317	}
257	}	318	}
258	}	319	}
259		320
260	--len;	321	--len;
261	}	322	}
262	}	323	}
263		324
264	inline void	325	INLINE void
265	encode_indent (enc_t *enc)	326	encode_indent (enc_t *enc)
266	{	327	{
267	if (enc->json.flags & F_INDENT)	328	if (enc->json.flags & F_INDENT)
268	{	329	{
269	int spaces = enc->indent * INDENT_STEP;	330	int spaces = enc->indent * INDENT_STEP;
…		…
272	memset (enc->cur, ' ', spaces);	333	memset (enc->cur, ' ', spaces);
273	enc->cur += spaces;	334	enc->cur += spaces;
274	}	335	}
275	}	336	}
276		337
277	inline void	338	INLINE void
278	encode_space (enc_t *enc)	339	encode_space (enc_t *enc)
279	{	340	{
280	need (enc, 1);	341	need (enc, 1);
281	encode_ch (enc, ' ');	342	encode_ch (enc, ' ');
282	}	343	}
283		344
284	inline void	345	INLINE void
285	encode_nl (enc_t *enc)	346	encode_nl (enc_t *enc)
286	{	347	{
287	if (enc->json.flags & F_INDENT)	348	if (enc->json.flags & F_INDENT)
288	{	349	{
289	need (enc, 1);	350	need (enc, 1);
290	encode_ch (enc, '\n');	351	encode_ch (enc, '\n');
291	}	352	}
292	}	353	}
293		354
294	inline void	355	INLINE void
295	encode_comma (enc_t *enc)	356	encode_comma (enc_t *enc)
296	{	357	{
297	encode_ch (enc, ',');	358	encode_ch (enc, ',');
298		359
299	if (enc->json.flags & F_INDENT)	360	if (enc->json.flags & F_INDENT)
…		…
307	static void	368	static void
308	encode_av (enc_t enc, AV av)	369	encode_av (enc_t enc, AV av)
309	{	370	{
310	int i, len = av_len (av);	371	int i, len = av_len (av);
311		372
312	if (enc->indent >= enc->maxdepth)	373	if (enc->indent >= enc->json.max_depth)
313	croak ("data structure too deep (hit recursion limit)");	374	croak (ERR_NESTING_EXCEEDED);
314		375
315	encode_ch (enc, '['); encode_nl (enc);	376	encode_ch (enc, '[');
316	++enc->indent;	377
		378	if (len >= 0)
		379	{
		380	encode_nl (enc); ++enc->indent;
317		381
318	for (i = 0; i <= len; ++i)	382	for (i = 0; i <= len; ++i)
319	{	383	{
320	SV **svp = av_fetch (av, i, 0);	384	SV **svp = av_fetch (av, i, 0);
321		385
322	encode_indent (enc);	386	encode_indent (enc);
323		387
324	if (svp)	388	if (svp)
325	encode_sv (enc, *svp);	389	encode_sv (enc, *svp);
326	else	390	else
327	encode_str (enc, "null", 4, 0);	391	encode_str (enc, "null", 4, 0);
328		392
329	if (i < len)	393	if (i < len)
330	encode_comma (enc);	394	encode_comma (enc);
331	}	395	}
332		396
		397	encode_nl (enc); --enc->indent; encode_indent (enc);
		398	}
		399
333	encode_nl (enc);	400	encode_ch (enc, ']');
334
335	--enc->indent;
336	encode_indent (enc); encode_ch (enc, ']');
337	}	401	}
338		402
339	static void	403	static void
340	encode_hk (enc_t enc, HE he)	404	encode_hk (enc_t enc, HE he)
341	{	405	{
…		…
389		453
390	static void	454	static void
391	encode_hv (enc_t enc, HV hv)	455	encode_hv (enc_t enc, HV hv)
392	{	456	{
393	HE *he;	457	HE *he;
394	int count;
395		458
396	if (enc->indent >= enc->maxdepth)	459	if (enc->indent >= enc->json.max_depth)
397	croak ("data structure too deep (hit recursion limit)");	460	croak (ERR_NESTING_EXCEEDED);
398		461
399	encode_ch (enc, '{'); encode_nl (enc); ++enc->indent;	462	encode_ch (enc, '{');
400		463
401	// for canonical output we have to sort by keys first	464	// for canonical output we have to sort by keys first
402	// actually, this is mostly due to the stupid so-called	465	// actually, this is mostly due to the stupid so-called
403	// security workaround added somewhere in 5.8.x.	466	// security workaround added somewhere in 5.8.x.
404	// that randomises hash orderings	467	// that randomises hash orderings
…		…
457		520
458	FREETMPS;	521	FREETMPS;
459	LEAVE;	522	LEAVE;
460	}	523	}
461		524
		525	encode_nl (enc); ++enc->indent;
		526
462	while (count--)	527	while (count--)
463	{	528	{
464	encode_indent (enc);	529	encode_indent (enc);
465	he = hes [count];	530	he = hes [count];
466	encode_hk (enc, he);	531	encode_hk (enc, he);
467	encode_sv (enc, SvMAGICAL (hv) ? hv_iterval (hv, he) : HeVAL (he));	532	encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he));
468		533
469	if (count)	534	if (count)
470	encode_comma (enc);	535	encode_comma (enc);
471	}	536	}
		537
		538	encode_nl (enc); --enc->indent; encode_indent (enc);
472	}	539	}
473	}	540	}
474	else	541	else
475	{	542	{
476	if (hv_iterinit (hv) \|\| SvMAGICAL (hv))	543	if (hv_iterinit (hv) \|\| SvMAGICAL (hv))
477	if ((he = hv_iternext (hv)))	544	if ((he = hv_iternext (hv)))
		545	{
		546	encode_nl (enc); ++enc->indent;
		547
478	for (;;)	548	for (;;)
479	{	549	{
480	encode_indent (enc);	550	encode_indent (enc);
481	encode_hk (enc, he);	551	encode_hk (enc, he);
482	encode_sv (enc, SvMAGICAL (hv) ? hv_iterval (hv, he) : HeVAL (he));	552	encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he));
483		553
484	if (!(he = hv_iternext (hv)))	554	if (!(he = hv_iternext (hv)))
485	break;	555	break;
486		556
487	encode_comma (enc);	557	encode_comma (enc);
488	}	558	}
489	}
490		559
		560	encode_nl (enc); --enc->indent; encode_indent (enc);
		561	}
		562	}
		563
491	encode_nl (enc);	564	encode_ch (enc, '}');
492
493	--enc->indent; encode_indent (enc); encode_ch (enc, '}');
494	}	565	}
495		566
496	// encode objects, arrays and special \0=false and \1=true values.	567	// encode objects, arrays and special \0=false and \1=true values.
497	static void	568	static void
498	encode_rv (enc_t enc, SV sv)	569	encode_rv (enc_t enc, SV sv)
…		…
575		646
576	if (len == 1 && *pv == '1')	647	if (len == 1 && *pv == '1')
577	encode_str (enc, "true", 4, 0);	648	encode_str (enc, "true", 4, 0);
578	else if (len == 1 && *pv == '0')	649	else if (len == 1 && *pv == '0')
579	encode_str (enc, "false", 5, 0);	650	encode_str (enc, "false", 5, 0);
		651	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		652	encode_str (enc, "null", 4, 0);
580	else	653	else
581	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	654	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
582	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	655	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
583	}	656	}
		657	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		658	encode_str (enc, "null", 4, 0);
584	else	659	else
585	croak ("encountered %s, but JSON can only represent references to arrays or hashes",	660	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
586	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	661	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
587	}	662	}
588		663
…		…
606	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);	681	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);
607	enc->cur += strlen (enc->cur);	682	enc->cur += strlen (enc->cur);
608	}	683	}
609	else if (SvIOKp (sv))	684	else if (SvIOKp (sv))
610	{	685	{
611	// we assume we can always read an IV as a UV	686	// we assume we can always read an IV as a UV and vice versa
612	if (SvUV (sv) & ~(UV)0x7fff)	687	// we assume two's complement
613	{	688	// we assume no aliasing issues in the union
614	// large integer, use the (rather slow) snprintf way.	689	if (SvIsUV (sv) ? SvUVX (sv) <= 59000
615	need (enc, sizeof (UV) * 3);	690	: SvIVX (sv) <= 59000 && SvIVX (sv) >= -59000)
616	enc->cur +=
617	SvIsUV(sv)
618	? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv))
619	: snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv));
620	}
621	else
622	{	691	{
623	// optimise the "small number case"	692	// optimise the "small number case"
624	// code will likely be branchless and use only a single multiplication	693	// code will likely be branchless and use only a single multiplication
		694	// works for numbers up to 59074
625	I32 i = SvIV (sv);	695	I32 i = SvIVX (sv);
626	U32 u;	696	U32 u;
627	char digit, nz = 0;	697	char digit, nz = 0;
628		698
629	need (enc, 6);	699	need (enc, 6);
630		700
…		…
636		706
637	// now output digit by digit, each time masking out the integer part	707	// now output digit by digit, each time masking out the integer part
638	// and multiplying by 5 while moving the decimal point one to the right,	708	// and multiplying by 5 while moving the decimal point one to the right,
639	// resulting in a net multiplication by 10.	709	// resulting in a net multiplication by 10.
640	// we always write the digit to memory but conditionally increment	710	// we always write the digit to memory but conditionally increment
641	// the pointer, to ease the usage of conditional move instructions.	711	// the pointer, to enable the use of conditional move instructions.
642	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffff) 5;	712	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffffUL) 5;
643	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffff) 5;	713	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffffUL) 5;
644	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffff) 5;	714	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffffUL) 5;
645	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffff) 5;	715	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffffUL) 5;
646	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'	716	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'
647	}	717	}
		718	else
		719	{
		720	// large integer, use the (rather slow) snprintf way.
		721	need (enc, IVUV_MAXCHARS);
		722	enc->cur +=
		723	SvIsUV(sv)
		724	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
		725	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
		726	}
648	}	727	}
649	else if (SvROK (sv))	728	else if (SvROK (sv))
650	encode_rv (enc, SvRV (sv));	729	encode_rv (enc, SvRV (sv));
651	else if (!SvOK (sv))	730	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
652	encode_str (enc, "null", 4, 0);	731	encode_str (enc, "null", 4, 0);
653	else	732	else
654	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	733	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
655	SvPV_nolen (sv), SvFLAGS (sv));	734	SvPV_nolen (sv), SvFLAGS (sv));
656	}	735	}
…		…
666	enc.json = *json;	745	enc.json = *json;
667	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	746	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
668	enc.cur = SvPVX (enc.sv);	747	enc.cur = SvPVX (enc.sv);
669	enc.end = SvEND (enc.sv);	748	enc.end = SvEND (enc.sv);
670	enc.indent = 0;	749	enc.indent = 0;
671	enc.maxdepth = DEC_DEPTH (enc.json.flags);	750	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL
		751	: enc.json.flags & F_LATIN1 ? 0x000100UL
		752	: 0x110000UL;
672		753
673	SvPOK_only (enc.sv);	754	SvPOK_only (enc.sv);
674	encode_sv (&enc, scalar);	755	encode_sv (&enc, scalar);
675		756
676	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	757	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
…		…
697	JSON json;	778	JSON json;
698	U32 depth; // recursion depth	779	U32 depth; // recursion depth
699	U32 maxdepth; // recursion depth limit	780	U32 maxdepth; // recursion depth limit
700	} dec_t;	781	} dec_t;
701		782
702	inline void	783	INLINE void
		784	decode_comment (dec_t *dec)
		785	{
		786	// only '#'-style comments allowed a.t.m.
		787
		788	while (dec->cur && dec->cur != 0x0a && *dec->cur != 0x0d)
		789	++dec->cur;
		790	}
		791
		792	INLINE void
703	decode_ws (dec_t *dec)	793	decode_ws (dec_t *dec)
704	{	794	{
705	for (;;)	795	for (;;)
706	{	796	{
707	char ch = *dec->cur;	797	char ch = *dec->cur;
708		798
709	if (ch > 0x20	799	if (ch > 0x20)
		800	{
		801	if (expect_false (ch == '#'))
		802	{
		803	if (dec->json.flags & F_RELAXED)
		804	decode_comment (dec);
		805	else
		806	break;
		807	}
		808	else
		809	break;
		810	}
710	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09))	811	else if (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)
711	break;	812	break; // parse error, but let higher level handle it, gives better error messages
712		813
713	++dec->cur;	814	++dec->cur;
714	}	815	}
715	}	816	}
716		817
…		…
720	if (*dec->cur != ch) \	821	if (*dec->cur != ch) \
721	ERR (# ch " expected"); \	822	ERR (# ch " expected"); \
722	++dec->cur; \	823	++dec->cur; \
723	SE	824	SE
724		825
725	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")	826	#define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED)
726	#define DEC_DEC_DEPTH --dec->depth	827	#define DEC_DEC_DEPTH --dec->depth
727		828
728	static SV decode_sv (dec_t dec);	829	static SV decode_sv (dec_t dec);
729		830
730	static signed char decode_hexdigit[256];	831	static signed char decode_hexdigit[256];
…		…
822		923
823	if (hi >= 0x80)	924	if (hi >= 0x80)
824	{	925	{
825	utf8 = 1;	926	utf8 = 1;
826		927
827	cur = (char *)uvuni_to_utf8_flags (cur, hi, 0);	928	cur = encode_utf8 (cur, hi);
828	}	929	}
829	else	930	else
830	*cur++ = hi;	931	*cur++ = hi;
831	}	932	}
832	break;	933	break;
…		…
834	default:	935	default:
835	--dec_cur;	936	--dec_cur;
836	ERR ("illegal backslash escape sequence in string");	937	ERR ("illegal backslash escape sequence in string");
837	}	938	}
838	}	939	}
839	else if (expect_true (ch >= 0x20 && ch <= 0x7f))	940	else if (expect_true (ch >= 0x20 && ch < 0x80))
840	*cur++ = ch;	941	*cur++ = ch;
841	else if (ch >= 0x80)	942	else if (ch >= 0x80)
842	{	943	{
843	STRLEN clen;	944	STRLEN clen;
844	UV uch;	945	UV uch;
…		…
967		1068
968	if (!is_nv)	1069	if (!is_nv)
969	{	1070	{
970	int len = dec->cur - start;	1071	int len = dec->cur - start;
971		1072
972	// special case the rather common 1..4-digit-int case, assumes 32 bit ints or so	1073	// special case the rather common 1..5-digit-int case
973	if (*start == '-')	1074	if (*start == '-')
974	switch (len)	1075	switch (len)
975	{	1076	{
976	case 2: return newSViv (-( start [1] - '0' * 1));	1077	case 2: return newSViv (-( start [1] - '0' * 1));
977	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	1078	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));
978	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));	1079	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
979	case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));	1080	case 5: return newSViv (-( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
		1081	case 6: return newSViv (-(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));
980	}	1082	}
981	else	1083	else
982	switch (len)	1084	switch (len)
983	{	1085	{
984	case 1: return newSViv ( start [0] - '0' * 1);	1086	case 1: return newSViv ( start [0] - '0' * 1);
985	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	1087	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
986	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);	1088	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
987	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);	1089	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
		1090	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);
988	}	1091	}
989		1092
990	{	1093	{
991	UV uv;	1094	UV uv;
992	int numtype = grok_number (start, len, &uv);	1095	int numtype = grok_number (start, len, &uv);
…		…
1053		1156
1054	if (*dec->cur != ',')	1157	if (*dec->cur != ',')
1055	ERR (", or ] expected while parsing array");	1158	ERR (", or ] expected while parsing array");
1056		1159
1057	++dec->cur;	1160	++dec->cur;
		1161
		1162	decode_ws (dec);
		1163
		1164	if (*dec->cur == ']' && dec->json.flags & F_RELAXED)
		1165	{
		1166	++dec->cur;
		1167	break;
		1168	}
1058	}	1169	}
1059		1170
1060	DEC_DEC_DEPTH;	1171	DEC_DEC_DEPTH;
1061	return newRV_noinc ((SV *)av);	1172	return newRV_noinc ((SV *)av);
1062		1173
…		…
1078	if (*dec->cur == '}')	1189	if (*dec->cur == '}')
1079	++dec->cur;	1190	++dec->cur;
1080	else	1191	else
1081	for (;;)	1192	for (;;)
1082	{	1193	{
1083	decode_ws (dec); EXPECT_CH ('"');	1194	EXPECT_CH ('"');
1084		1195
1085	// heuristic: assume that	1196	// heuristic: assume that
1086	// a) decode_str + hv_store_ent are abysmally slow.	1197	// a) decode_str + hv_store_ent are abysmally slow.
1087	// b) most hash keys are short, simple ascii text.	1198	// b) most hash keys are short, simple ascii text.
1088	// => try to "fast-match" such strings to avoid	1199	// => try to "fast-match" such strings to avoid
…		…
1092	char *p = dec->cur;	1203	char *p = dec->cur;
1093	char *e = p + 24; // only try up to 24 bytes	1204	char *e = p + 24; // only try up to 24 bytes
1094		1205
1095	for (;;)	1206	for (;;)
1096	{	1207	{
1097	// the >= 0x80 is true on most architectures	1208	// the >= 0x80 is false on most architectures
1098	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')	1209	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')
1099	{	1210	{
1100	// slow path, back up and use decode_str	1211	// slow path, back up and use decode_str
1101	SV *key = decode_str (dec);	1212	SV *key = decode_str (dec);
1102	if (!key)	1213	if (!key)
1103	goto fail;	1214	goto fail;
1104		1215
1105	decode_ws (dec); EXPECT_CH (':');	1216	decode_ws (dec); EXPECT_CH (':');
1106		1217
		1218	decode_ws (dec);
1107	value = decode_sv (dec);	1219	value = decode_sv (dec);
1108	if (!value)	1220	if (!value)
1109	{	1221	{
1110	SvREFCNT_dec (key);	1222	SvREFCNT_dec (key);
1111	goto fail;	1223	goto fail;
…		…
1123	int len = p - key;	1235	int len = p - key;
1124	dec->cur = p + 1;	1236	dec->cur = p + 1;
1125		1237
1126	decode_ws (dec); EXPECT_CH (':');	1238	decode_ws (dec); EXPECT_CH (':');
1127		1239
		1240	decode_ws (dec);
1128	value = decode_sv (dec);	1241	value = decode_sv (dec);
1129	if (!value)	1242	if (!value)
1130	goto fail;	1243	goto fail;
1131		1244
1132	hv_store (hv, key, len, value, 0);	1245	hv_store (hv, key, len, value, 0);
…		…
1148		1261
1149	if (*dec->cur != ',')	1262	if (*dec->cur != ',')
1150	ERR (", or } expected while parsing object/hash");	1263	ERR (", or } expected while parsing object/hash");
1151		1264
1152	++dec->cur;	1265	++dec->cur;
		1266
		1267	decode_ws (dec);
		1268
		1269	if (*dec->cur == '}' && dec->json.flags & F_RELAXED)
		1270	{
		1271	++dec->cur;
		1272	break;
		1273	}
1153	}	1274	}
1154		1275
1155	DEC_DEC_DEPTH;	1276	DEC_DEC_DEPTH;
1156	sv = newRV_noinc ((SV *)hv);	1277	sv = newRV_noinc ((SV *)hv);
1157		1278
…		…
1222	}	1343	}
1223		1344
1224	static SV *	1345	static SV *
1225	decode_sv (dec_t *dec)	1346	decode_sv (dec_t *dec)
1226	{	1347	{
1227	decode_ws (dec);
1228
1229	// the beauty of JSON: you need exactly one character lookahead	1348	// the beauty of JSON: you need exactly one character lookahead
1230	// to parse anything.	1349	// to parse everything.
1231	switch (*dec->cur)	1350	switch (*dec->cur)
1232	{	1351	{
1233	case '"': ++dec->cur; return decode_str (dec);	1352	case '"': ++dec->cur; return decode_str (dec);
1234	case '[': ++dec->cur; return decode_av (dec);	1353	case '[': ++dec->cur; return decode_av (dec);
1235	case '{': ++dec->cur; return decode_hv (dec);	1354	case '{': ++dec->cur; return decode_hv (dec);
1236		1355
1237	case '-':	1356	case '-':
1238	case '0': case '1': case '2': case '3': case '4':	1357	case '0': case '1': case '2': case '3': case '4':
1239	case '5': case '6': case '7': case '8': case '9':	1358	case '5': case '6': case '7': case '8': case '9':
1240	return decode_num (dec);	1359	return decode_num (dec);
…		…
1242	case 't':	1361	case 't':
1243	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1362	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1244	{	1363	{
1245	dec->cur += 4;	1364	dec->cur += 4;
1246	#if JSON_SLOW	1365	#if JSON_SLOW
1247	json_true = get_sv ("JSON::XS::true", 1); SvREADONLY_on (json_true);	1366	json_true = get_bool ("JSON::XS::true");
1248	#endif	1367	#endif
1249	return SvREFCNT_inc (json_true);	1368	return newSVsv (json_true);
1250	}	1369	}
1251	else	1370	else
1252	ERR ("'true' expected");	1371	ERR ("'true' expected");
1253		1372
1254	break;	1373	break;
…		…
1256	case 'f':	1375	case 'f':
1257	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1376	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1258	{	1377	{
1259	dec->cur += 5;	1378	dec->cur += 5;
1260	#if JSON_SLOW	1379	#if JSON_SLOW
1261	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1380	json_false = get_bool ("JSON::XS::false");
1262	#endif	1381	#endif
1263	return SvREFCNT_inc (json_false);	1382	return newSVsv (json_false);
1264	}	1383	}
1265	else	1384	else
1266	ERR ("'false' expected");	1385	ERR ("'false' expected");
1267		1386
1268	break;	1387	break;
…		…
1286	fail:	1405	fail:
1287	return 0;	1406	return 0;
1288	}	1407	}
1289		1408
1290	static SV *	1409	static SV *
1291	decode_json (SV string, JSON json, UV *offset_return)	1410	decode_json (SV string, JSON json, STRLEN *offset_return)
1292	{	1411	{
1293	dec_t dec;	1412	dec_t dec;
1294	UV offset;	1413	STRLEN offset;
1295	SV *sv;	1414	SV *sv;
1296		1415
1297	SvGETMAGIC (string);	1416	SvGETMAGIC (string);
1298	SvUPGRADE (string, SVt_PV);	1417	SvUPGRADE (string, SVt_PV);
1299		1418
1300	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))	1419	/* work around a bug in perl 5.10, which causes SvCUR to fail an
		1420	* assertion with -DDEBUGGING, although SvCUR is documented to
		1421	* return the xpv_cur field which certainly exists after upgrading.
		1422	* according to nicholas clark, calling SvPOK fixes this.
		1423	*/
		1424	SvPOK (string);
		1425
		1426	if (SvCUR (string) > json->max_size && json->max_size)
1301	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1427	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1302	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));	1428	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
1303		1429
1304	if (json->flags & F_UTF8)	1430	if (json->flags & F_UTF8)
1305	sv_utf8_downgrade (string, 0);	1431	sv_utf8_downgrade (string, 0);
1306	else	1432	else
1307	sv_utf8_upgrade (string);	1433	sv_utf8_upgrade (string);
1308		1434
1309	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1435	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1310		1436
1311	dec.json = *json;	1437	dec.json = *json;
1312	dec.cur = SvPVX (string);	1438	dec.cur = SvPVX (string);
1313	dec.end = SvEND (string);	1439	dec.end = SvEND (string);
1314	dec.err = 0;	1440	dec.err = 0;
1315	dec.depth = 0;	1441	dec.depth = 0;
1316	dec.maxdepth = DEC_DEPTH (dec.json.flags);
1317		1442
1318	if (dec.json.cb_object \|\| dec.json.cb_sk_object)	1443	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
1319	dec.json.flags \|= F_HOOK;	1444	dec.json.flags \|= F_HOOK;
1320		1445
1321	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1446	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
		1447
		1448	decode_ws (&dec);
1322	sv = decode_sv (&dec);	1449	sv = decode_sv (&dec);
1323		1450
1324	if (!(offset_return \|\| !sv))	1451	if (!(offset_return \|\| !sv))
1325	{	1452	{
1326	// check for trailing garbage	1453	// check for trailing garbage
…		…
1370		1497
1371	return sv;	1498	return sv;
1372	}	1499	}
1373		1500
1374	/////////////////////////////////////////////////////////////////////////////	1501	/////////////////////////////////////////////////////////////////////////////
		1502	// incremental parser
		1503
		1504	static void
		1505	incr_parse (JSON *self)
		1506	{
		1507	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1508
		1509	for (;;)
		1510	{
		1511	//printf ("loop pod %d p<%c><%s>, mode %d nest %d\n", p - SvPVX (self->incr_text), p, p, self->incr_mode, self->incr_nest);//D
		1512	switch (self->incr_mode)
		1513	{
		1514	// only used for intiial whitespace skipping
		1515	case INCR_M_WS:
		1516	for (;;)
		1517	{
		1518	if (*p > 0x20)
		1519	{
		1520	self->incr_mode = INCR_M_JSON;
		1521	goto incr_m_json;
		1522	}
		1523	else if (!*p)
		1524	goto interrupt;
		1525
		1526	++p;
		1527	}
		1528
		1529	// skip a single char inside a string (for \\-processing)
		1530	case INCR_M_BS:
		1531	if (!*p)
		1532	goto interrupt;
		1533
		1534	++p;
		1535	self->incr_mode = INCR_M_STR;
		1536	goto incr_m_str;
		1537
		1538	// inside a string
		1539	case INCR_M_STR:
		1540	incr_m_str:
		1541	for (;;)
		1542	{
		1543	if (*p == '"')
		1544	{
		1545	++p;
		1546	self->incr_mode = INCR_M_JSON;
		1547
		1548	if (!self->incr_nest)
		1549	goto interrupt;
		1550
		1551	goto incr_m_json;
		1552	}
		1553	else if (*p == '\\')
		1554	{
		1555	++p; // "virtually" consumes character after \
		1556
		1557	if (!*p) // if at end of string we have to switch modes
		1558	{
		1559	self->incr_mode = INCR_M_BS;
		1560	goto interrupt;
		1561	}
		1562	}
		1563	else if (!*p)
		1564	goto interrupt;
		1565
		1566	++p;
		1567	}
		1568
		1569	// after initial ws, outside string
		1570	case INCR_M_JSON:
		1571	incr_m_json:
		1572	for (;;)
		1573	{
		1574	switch (*p++)
		1575	{
		1576	case 0:
		1577	--p;
		1578	goto interrupt;
		1579
		1580	case 0x09:
		1581	case 0x0a:
		1582	case 0x0d:
		1583	case 0x20:
		1584	if (!self->incr_nest)
		1585	{
		1586	--p; // do not eat the whitespace, let the next round do it
		1587	goto interrupt;
		1588	}
		1589	break;
		1590
		1591	case '"':
		1592	self->incr_mode = INCR_M_STR;
		1593	goto incr_m_str;
		1594
		1595	case '[':
		1596	case '{':
		1597	if (++self->incr_nest > self->max_depth)
		1598	croak (ERR_NESTING_EXCEEDED);
		1599	break;
		1600
		1601	case ']':
		1602	case '}':
		1603	if (--self->incr_nest <= 0)
		1604	goto interrupt;
		1605	}
		1606	}
		1607	}
		1608
		1609	modechange:
		1610	;
		1611	}
		1612
		1613	interrupt:
		1614	self->incr_pos = p - SvPVX (self->incr_text);
		1615	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
		1616	}
		1617
		1618	/////////////////////////////////////////////////////////////////////////////
1375	// XS interface functions	1619	// XS interface functions
1376		1620
1377	MODULE = JSON::XS PACKAGE = JSON::XS	1621	MODULE = JSON::XS PACKAGE = JSON::XS
1378		1622
1379	BOOT:	1623	BOOT:
…		…
1388	: -1;	1632	: -1;
1389		1633
1390	json_stash = gv_stashpv ("JSON::XS" , 1);	1634	json_stash = gv_stashpv ("JSON::XS" , 1);
1391	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	1635	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);
1392		1636
1393	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );	1637	json_true = get_bool ("JSON::XS::true");
1394	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1638	json_false = get_bool ("JSON::XS::false");
1395	}	1639	}
1396		1640
1397	PROTOTYPES: DISABLE	1641	PROTOTYPES: DISABLE
1398		1642
1399	void CLONE (...)	1643	void CLONE (...)
…		…
1404	void new (char *klass)	1648	void new (char *klass)
1405	PPCODE:	1649	PPCODE:
1406	{	1650	{
1407	SV *pv = NEWSV (0, sizeof (JSON));	1651	SV *pv = NEWSV (0, sizeof (JSON));
1408	SvPOK_only (pv);	1652	SvPOK_only (pv);
1409	Zero (SvPVX (pv), 1, JSON);	1653	json_init ((JSON *)SvPVX (pv));
1410	((JSON *)SvPVX (pv))->flags = F_DEFAULT;	1654	XPUSHs (sv_2mortal (sv_bless (
1411	XPUSHs (sv_2mortal (sv_bless (newRV_noinc (pv), JSON_STASH)));	1655	newRV_noinc (pv),
		1656	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
		1657	)));
1412	}	1658	}
1413		1659
1414	void ascii (JSON *self, int enable = 1)	1660	void ascii (JSON *self, int enable = 1)
1415	ALIAS:	1661	ALIAS:
1416	ascii = F_ASCII	1662	ascii = F_ASCII
…		…
1423	pretty = F_PRETTY	1669	pretty = F_PRETTY
1424	allow_nonref = F_ALLOW_NONREF	1670	allow_nonref = F_ALLOW_NONREF
1425	shrink = F_SHRINK	1671	shrink = F_SHRINK
1426	allow_blessed = F_ALLOW_BLESSED	1672	allow_blessed = F_ALLOW_BLESSED
1427	convert_blessed = F_CONV_BLESSED	1673	convert_blessed = F_CONV_BLESSED
		1674	relaxed = F_RELAXED
		1675	allow_unknown = F_ALLOW_UNKNOWN
1428	PPCODE:	1676	PPCODE:
1429	{	1677	{
1430	if (enable)	1678	if (enable)
1431	self->flags \|= ix;	1679	self->flags \|= ix;
1432	else	1680	else
1433	self->flags &= ~ix;	1681	self->flags &= ~ix;
1434		1682
1435	XPUSHs (ST (0));	1683	XPUSHs (ST (0));
1436	}	1684	}
1437		1685
1438	void max_depth (JSON *self, UV max_depth = 0x80000000UL)	1686	void get_ascii (JSON *self)
		1687	ALIAS:
		1688	get_ascii = F_ASCII
		1689	get_latin1 = F_LATIN1
		1690	get_utf8 = F_UTF8
		1691	get_indent = F_INDENT
		1692	get_canonical = F_CANONICAL
		1693	get_space_before = F_SPACE_BEFORE
		1694	get_space_after = F_SPACE_AFTER
		1695	get_allow_nonref = F_ALLOW_NONREF
		1696	get_shrink = F_SHRINK
		1697	get_allow_blessed = F_ALLOW_BLESSED
		1698	get_convert_blessed = F_CONV_BLESSED
		1699	get_relaxed = F_RELAXED
		1700	get_allow_unknown = F_ALLOW_UNKNOWN
1439	PPCODE:	1701	PPCODE:
1440	{	1702	XPUSHs (boolSV (self->flags & ix));
1441	UV log2 = 0;
1442		1703
1443	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;	1704	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1444		1705	PPCODE:
1445	while ((1UL << log2) < max_depth)	1706	self->max_depth = max_depth;
1446	++log2;
1447
1448	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1449
1450	XPUSHs (ST (0));	1707	XPUSHs (ST (0));
1451	}
1452		1708
		1709	U32 get_max_depth (JSON *self)
		1710	CODE:
		1711	RETVAL = self->max_depth;
		1712	OUTPUT:
		1713	RETVAL
		1714
1453	void max_size (JSON *self, UV max_size = 0)	1715	void max_size (JSON *self, U32 max_size = 0)
1454	PPCODE:	1716	PPCODE:
1455	{	1717	self->max_size = max_size;
1456	UV log2 = 0;
1457
1458	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
1459	if (max_size == 1) max_size = 2;
1460
1461	while ((1UL << log2) < max_size)
1462	++log2;
1463
1464	self->flags = self->flags & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
1465
1466	XPUSHs (ST (0));	1718	XPUSHs (ST (0));
1467	}	1719
		1720	int get_max_size (JSON *self)
		1721	CODE:
		1722	RETVAL = self->max_size;
		1723	OUTPUT:
		1724	RETVAL
1468		1725
1469	void filter_json_object (JSON self, SV cb = &PL_sv_undef)	1726	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1470	PPCODE:	1727	PPCODE:
1471	{	1728	{
1472	SvREFCNT_dec (self->cb_object);	1729	SvREFCNT_dec (self->cb_object);
…		…
1506	XPUSHs (decode_json (jsonstr, self, 0));	1763	XPUSHs (decode_json (jsonstr, self, 0));
1507		1764
1508	void decode_prefix (JSON self, SV jsonstr)	1765	void decode_prefix (JSON self, SV jsonstr)
1509	PPCODE:	1766	PPCODE:
1510	{	1767	{
1511	UV offset;	1768	STRLEN offset;
1512	EXTEND (SP, 2);	1769	EXTEND (SP, 2);
1513	PUSHs (decode_json (jsonstr, self, &offset));	1770	PUSHs (decode_json (jsonstr, self, &offset));
1514	PUSHs (sv_2mortal (newSVuv (offset)));	1771	PUSHs (sv_2mortal (newSVuv (offset)));
		1772	}
		1773
		1774	void incr_parse (JSON self, SV jsonstr = 0)
		1775	PPCODE:
		1776	{
		1777	if (!self->incr_text)
		1778	self->incr_text = newSVpvn ("", 0);
		1779
		1780	// append data, if any
		1781	if (jsonstr)
		1782	{
		1783	if (SvUTF8 (jsonstr) && !SvUTF8 (self->incr_text))
		1784	{
		1785	/* utf-8-ness differs, need to upgrade */
		1786	sv_utf8_upgrade (self->incr_text);
		1787
		1788	if (self->incr_pos)
		1789	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		1790	- (U8 *)SvPVX (self->incr_text);
		1791	}
		1792
		1793	{
		1794	STRLEN len;
		1795	const char *str = SvPV (jsonstr, len);
		1796	SvGROW (self->incr_text, SvCUR (self->incr_text) + len + 1);
		1797	Move (str, SvEND (self->incr_text), len, char);
		1798	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
		1799	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
		1800	}
		1801	}
		1802
		1803	if (GIMME_V != G_VOID)
		1804	do
		1805	{
		1806	STRLEN offset;
		1807
		1808	if (!INCR_DONE (self))
		1809	{
		1810	incr_parse (self);
		1811
		1812	if (self->incr_pos > self->max_size && self->max_size)
		1813	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		1814	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
		1815
		1816	if (!INCR_DONE (self))
		1817	break;
		1818	}
		1819
		1820	XPUSHs (decode_json (self->incr_text, self, &offset));
		1821
		1822	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + offset);
		1823	self->incr_pos -= offset;
		1824	self->incr_nest = 0;
		1825	self->incr_mode = 0;
		1826	}
		1827	while (GIMME_V == G_ARRAY);
		1828	}
		1829
		1830	SV incr_text (JSON self)
		1831	ATTRS: lvalue
		1832	CODE:
		1833	{
		1834	if (self->incr_pos)
		1835	croak ("incr_text can not be called when the incremental parser already started parsing");
		1836
		1837	RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef;
		1838	}
		1839	OUTPUT:
		1840	RETVAL
		1841
		1842	void incr_skip (JSON *self)
		1843	CODE:
		1844	{
		1845	if (self->incr_pos)
		1846	{
		1847	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos);
		1848	self->incr_pos = 0;
		1849	self->incr_nest = 0;
		1850	self->incr_mode = 0;
		1851	}
		1852	}
		1853
		1854	void incr_reset (JSON *self)
		1855	CODE:
		1856	{
		1857	SvREFCNT_dec (self->incr_text);
		1858	self->incr_text = 0;
		1859	self->incr_pos = 0;
		1860	self->incr_nest = 0;
		1861	self->incr_mode = 0;
1515	}	1862	}
1516		1863
1517	void DESTROY (JSON *self)	1864	void DESTROY (JSON *self)
1518	CODE:	1865	CODE:
1519	SvREFCNT_dec (self->cb_sk_object);	1866	SvREFCNT_dec (self->cb_sk_object);
1520	SvREFCNT_dec (self->cb_object);	1867	SvREFCNT_dec (self->cb_object);
		1868	SvREFCNT_dec (self->incr_text);
1521		1869
1522	PROTOTYPES: ENABLE	1870	PROTOTYPES: ENABLE
1523		1871
1524	void to_json (SV *scalar)	1872	void encode_json (SV *scalar)
		1873	ALIAS:
		1874	to_json_ = 0
		1875	encode_json = F_UTF8
1525	PPCODE:	1876	PPCODE:
1526	{	1877	{
1527	JSON json = { F_DEFAULT \| F_UTF8 };	1878	JSON json;
		1879	json_init (&json);
		1880	json.flags \|= ix;
1528	XPUSHs (encode_json (scalar, &json));	1881	XPUSHs (encode_json (scalar, &json));
1529	}	1882	}
1530		1883
1531	void from_json (SV *jsonstr)	1884	void decode_json (SV *jsonstr)
		1885	ALIAS:
		1886	from_json_ = 0
		1887	decode_json = F_UTF8
1532	PPCODE:	1888	PPCODE:
1533	{	1889	{
1534	JSON json = { F_DEFAULT \| F_UTF8 };	1890	JSON json;
		1891	json_init (&json);
		1892	json.flags \|= ix;
1535	XPUSHs (decode_json (jsonstr, &json, 0));	1893	XPUSHs (decode_json (jsonstr, &json, 0));
1536	}	1894	}
1537		1895
		1896

Diff Legend

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

Comparing JSON-XS/XS.xs (file contents): Revision 1.61 by root, Sun Aug 26 21:56:47 2007 UTC vs. Revision 1.88 by root, Sun Jun 22 12:05:49 2008 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.61 by root, Sun Aug 26 21:56:47 2007 UTC vs.
Revision 1.88 by root, Sun Jun 22 12:05:49 2008 UTC