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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.63 by root, Mon Aug 27 01:49:01 2007 UTC vs.
Revision 1.85 by root, Sat Apr 5 18:15:46 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
…		…
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_RELAXED 0x00001000UL	35	#define F_RELAXED 0x00001000UL
33		36	#define F_ALLOW_UNKNOWN 0x00002000UL
34	#define F_MAXDEPTH 0xf8000000UL
35	#define S_MAXDEPTH 27
36	#define F_MAXSIZE 0x01f00000UL
37	#define S_MAXSIZE 20
38	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing	37	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
39		38
40	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
41	#define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE ))
42
43	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	39	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
44	#define F_DEFAULT (9UL << S_MAXDEPTH)
45		40
46	#define INIT_SIZE 32 // initial scalar size to be allocated	41	#define INIT_SIZE 32 // initial scalar size to be allocated
47	#define INDENT_STEP 3 // spaces per indentation level	42	#define INDENT_STEP 3 // spaces per indentation level
48		43
49	#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
50		45
51	#define SB do {	46	#define SB do {
52	#define SE } while (0)	47	#define SE } while (0)
53		48
54	#if __GNUC__ >= 3	49	#if __GNUC__ >= 3
55	# define expect(expr,value) __builtin_expect ((expr),(value))	50	# define expect(expr,value) __builtin_expect ((expr), (value))
56	# define inline inline	51	# define INLINE static inline
57	#else	52	#else
58	# define expect(expr,value) (expr)	53	# define expect(expr,value) (expr)
59	# define inline static	54	# define INLINE static
60	#endif	55	#endif
61		56
62	#define expect_false(expr) expect ((expr) != 0, 0)	57	#define expect_false(expr) expect ((expr) != 0, 0)
63	#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?)"
64		65
65	#ifdef USE_ITHREADS	66	#ifdef USE_ITHREADS
66	# define JSON_SLOW 1	67	# define JSON_SLOW 1
67	# 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))
68	#else	69	#else
…		…
71	#endif	72	#endif
72		73
73	static HV json_stash, json_boolean_stash; // JSON::XS::	74	static HV json_stash, json_boolean_stash; // JSON::XS::
74	static SV json_true, json_false;	75	static SV json_true, json_false;
75		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 && (json)->incr_mode == INCR_M_JSON)
		85
76	typedef struct {	86	typedef struct {
77	U32 flags;	87	U32 flags;
		88	U32 max_depth;
		89	STRLEN max_size;
		90
78	SV *cb_object;	91	SV *cb_object;
79	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	unsigned char incr_nest; // {[]}-nesting level
		98	unsigned char incr_mode;
80	} JSON;	99	} JSON;
		100
		101	INLINE void
		102	json_init (JSON *json)
		103	{
		104	Zero (json, 1, JSON);
		105	json->max_depth = 512;
		106	}
81		107
82	/////////////////////////////////////////////////////////////////////////////	108	/////////////////////////////////////////////////////////////////////////////
83	// utility functions	109	// utility functions
84		110
85	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
86	shrink (SV *sv)	123	shrink (SV *sv)
87	{	124	{
88	sv_utf8_downgrade (sv, 1);	125	sv_utf8_downgrade (sv, 1);
89	if (SvLEN (sv) > SvCUR (sv) + 1)	126	if (SvLEN (sv) > SvCUR (sv) + 1)
90	{	127	{
…		…
99	// decode an utf-8 character and return it, or (UV)-1 in	136	// decode an utf-8 character and return it, or (UV)-1 in
100	// case of an error.	137	// case of an error.
101	// we special-case "safe" characters from U+80 .. U+7FF,	138	// we special-case "safe" characters from U+80 .. U+7FF,
102	// but use the very good perl function to parse anything else.	139	// but use the very good perl function to parse anything else.
103	// note that we never call this function for a ascii codepoints	140	// note that we never call this function for a ascii codepoints
104	inline UV	141	INLINE UV
105	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)	142	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)
106	{	143	{
107	if (expect_false (s[0] > 0xdf \|\| s[0] < 0xc2))	144	if (expect_true (len >= 2
108	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);	145	&& IN_RANGE_INC (char, s[0], 0xc2, 0xdf)
109	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)	146	&& IN_RANGE_INC (char, s[1], 0x80, 0xbf)))
110	{	147	{
111	*clen = 2;	148	*clen = 2;
112	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);	149	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);
113	}	150	}
114	else	151	else
115	{	152	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
116	*clen = (STRLEN)-1;	153	}
117	return (UV)-1;	154
118	}	155	// likewise for encoding, also never called for ascii codepoints
		156	// this function takes advantage of this fact, although current gccs
		157	// seem to optimise the check for >= 0x80 away anyways
		158	INLINE unsigned char *
		159	encode_utf8 (unsigned char *s, UV ch)
		160	{
		161	if (expect_false (ch < 0x000080))
		162	*s++ = ch;
		163	else if (expect_true (ch < 0x000800))
		164	*s++ = 0xc0 \| ( ch >> 6),
		165	*s++ = 0x80 \| ( ch & 0x3f);
		166	else if ( ch < 0x010000)
		167	*s++ = 0xe0 \| ( ch >> 12),
		168	*s++ = 0x80 \| ((ch >> 6) & 0x3f),
		169	*s++ = 0x80 \| ( ch & 0x3f);
		170	else if ( ch < 0x110000)
		171	*s++ = 0xf0 \| ( ch >> 18),
		172	*s++ = 0x80 \| ((ch >> 12) & 0x3f),
		173	*s++ = 0x80 \| ((ch >> 6) & 0x3f),
		174	*s++ = 0x80 \| ( ch & 0x3f);
		175
		176	return s;
119	}	177	}
120		178
121	/////////////////////////////////////////////////////////////////////////////	179	/////////////////////////////////////////////////////////////////////////////
122	// encoder	180	// encoder
123		181
…		…
127	char *cur; // SvPVX (sv) + current output position	185	char *cur; // SvPVX (sv) + current output position
128	char *end; // SvEND (sv)	186	char *end; // SvEND (sv)
129	SV *sv; // result scalar	187	SV *sv; // result scalar
130	JSON json;	188	JSON json;
131	U32 indent; // indentation level	189	U32 indent; // indentation level
132	U32 maxdepth; // max. indentation/recursion level	190	UV limit; // escape character values >= this value when encoding
133	} enc_t;	191	} enc_t;
134		192
135	inline void	193	INLINE void
136	need (enc_t *enc, STRLEN len)	194	need (enc_t *enc, STRLEN len)
137	{	195	{
138	if (expect_false (enc->cur + len >= enc->end))	196	if (expect_false (enc->cur + len >= enc->end))
139	{	197	{
140	STRLEN cur = enc->cur - SvPVX (enc->sv);	198	STRLEN cur = enc->cur - SvPVX (enc->sv);
…		…
142	enc->cur = SvPVX (enc->sv) + cur;	200	enc->cur = SvPVX (enc->sv) + cur;
143	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	201	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
144	}	202	}
145	}	203	}
146		204
147	inline void	205	INLINE void
148	encode_ch (enc_t *enc, char ch)	206	encode_ch (enc_t *enc, char ch)
149	{	207	{
150	need (enc, 1);	208	need (enc, 1);
151	*enc->cur++ = ch;	209	*enc->cur++ = ch;
152	}	210	}
…		…
206	{	264	{
207	uch = ch;	265	uch = ch;
208	clen = 1;	266	clen = 1;
209	}	267	}
210		268
211	if (uch > 0x10FFFFUL)	269	if (uch < 0x80/0x20/ \|\| uch >= enc->limit)
212	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
213
214	if (uch < 0x80 \|\| enc->json.flags & F_ASCII \|\| (enc->json.flags & F_LATIN1 && uch > 0xFF))
215	{	270	{
216	if (uch > 0xFFFFUL)	271	if (uch >= 0x10000UL)
217	{	272	{
		273	if (uch >= 0x110000UL)
		274	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
		275
218	need (enc, len += 11);	276	need (enc, len += 11);
219	sprintf (enc->cur, "\\u%04x\\u%04x",	277	sprintf (enc->cur, "\\u%04x\\u%04x",
220	(int)((uch - 0x10000) / 0x400 + 0xD800),	278	(int)((uch - 0x10000) / 0x400 + 0xD800),
221	(int)((uch - 0x10000) % 0x400 + 0xDC00));	279	(int)((uch - 0x10000) % 0x400 + 0xDC00));
222	enc->cur += 12;	280	enc->cur += 12;
…		…
250	while (--clen);	308	while (--clen);
251	}	309	}
252	else	310	else
253	{	311	{
254	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed	312	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed
255	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);	313	enc->cur = encode_utf8 (enc->cur, uch);
256	++str;	314	++str;
257	}	315	}
258	}	316	}
259	}	317	}
260	}	318	}
261		319
262	--len;	320	--len;
263	}	321	}
264	}	322	}
265		323
266	inline void	324	INLINE void
267	encode_indent (enc_t *enc)	325	encode_indent (enc_t *enc)
268	{	326	{
269	if (enc->json.flags & F_INDENT)	327	if (enc->json.flags & F_INDENT)
270	{	328	{
271	int spaces = enc->indent * INDENT_STEP;	329	int spaces = enc->indent * INDENT_STEP;
…		…
274	memset (enc->cur, ' ', spaces);	332	memset (enc->cur, ' ', spaces);
275	enc->cur += spaces;	333	enc->cur += spaces;
276	}	334	}
277	}	335	}
278		336
279	inline void	337	INLINE void
280	encode_space (enc_t *enc)	338	encode_space (enc_t *enc)
281	{	339	{
282	need (enc, 1);	340	need (enc, 1);
283	encode_ch (enc, ' ');	341	encode_ch (enc, ' ');
284	}	342	}
285		343
286	inline void	344	INLINE void
287	encode_nl (enc_t *enc)	345	encode_nl (enc_t *enc)
288	{	346	{
289	if (enc->json.flags & F_INDENT)	347	if (enc->json.flags & F_INDENT)
290	{	348	{
291	need (enc, 1);	349	need (enc, 1);
292	encode_ch (enc, '\n');	350	encode_ch (enc, '\n');
293	}	351	}
294	}	352	}
295		353
296	inline void	354	INLINE void
297	encode_comma (enc_t *enc)	355	encode_comma (enc_t *enc)
298	{	356	{
299	encode_ch (enc, ',');	357	encode_ch (enc, ',');
300		358
301	if (enc->json.flags & F_INDENT)	359	if (enc->json.flags & F_INDENT)
…		…
309	static void	367	static void
310	encode_av (enc_t enc, AV av)	368	encode_av (enc_t enc, AV av)
311	{	369	{
312	int i, len = av_len (av);	370	int i, len = av_len (av);
313		371
314	if (enc->indent >= enc->maxdepth)	372	if (enc->indent >= enc->json.max_depth)
315	croak ("data structure too deep (hit recursion limit)");	373	croak (ERR_NESTING_EXCEEDED);
316		374
317	encode_ch (enc, '['); encode_nl (enc);	375	encode_ch (enc, '[');
318	++enc->indent;	376
		377	if (len >= 0)
		378	{
		379	encode_nl (enc); ++enc->indent;
319		380
320	for (i = 0; i <= len; ++i)	381	for (i = 0; i <= len; ++i)
321	{	382	{
322	SV **svp = av_fetch (av, i, 0);	383	SV **svp = av_fetch (av, i, 0);
323		384
324	encode_indent (enc);	385	encode_indent (enc);
325		386
326	if (svp)	387	if (svp)
327	encode_sv (enc, *svp);	388	encode_sv (enc, *svp);
328	else	389	else
329	encode_str (enc, "null", 4, 0);	390	encode_str (enc, "null", 4, 0);
330		391
331	if (i < len)	392	if (i < len)
332	encode_comma (enc);	393	encode_comma (enc);
333	}	394	}
334		395
		396	encode_nl (enc); --enc->indent; encode_indent (enc);
		397	}
		398
335	encode_nl (enc);	399	encode_ch (enc, ']');
336
337	--enc->indent;
338	encode_indent (enc); encode_ch (enc, ']');
339	}	400	}
340		401
341	static void	402	static void
342	encode_hk (enc_t enc, HE he)	403	encode_hk (enc_t enc, HE he)
343	{	404	{
…		…
391		452
392	static void	453	static void
393	encode_hv (enc_t enc, HV hv)	454	encode_hv (enc_t enc, HV hv)
394	{	455	{
395	HE *he;	456	HE *he;
396	int count;
397		457
398	if (enc->indent >= enc->maxdepth)	458	if (enc->indent >= enc->json.max_depth)
399	croak ("data structure too deep (hit recursion limit)");	459	croak (ERR_NESTING_EXCEEDED);
400		460
401	encode_ch (enc, '{'); encode_nl (enc); ++enc->indent;	461	encode_ch (enc, '{');
402		462
403	// for canonical output we have to sort by keys first	463	// for canonical output we have to sort by keys first
404	// actually, this is mostly due to the stupid so-called	464	// actually, this is mostly due to the stupid so-called
405	// security workaround added somewhere in 5.8.x.	465	// security workaround added somewhere in 5.8.x.
406	// that randomises hash orderings	466	// that randomises hash orderings
…		…
459		519
460	FREETMPS;	520	FREETMPS;
461	LEAVE;	521	LEAVE;
462	}	522	}
463		523
		524	encode_nl (enc); ++enc->indent;
		525
464	while (count--)	526	while (count--)
465	{	527	{
466	encode_indent (enc);	528	encode_indent (enc);
467	he = hes [count];	529	he = hes [count];
468	encode_hk (enc, he);	530	encode_hk (enc, he);
469	encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he));	531	encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he));
470		532
471	if (count)	533	if (count)
472	encode_comma (enc);	534	encode_comma (enc);
473	}	535	}
		536
		537	encode_nl (enc); --enc->indent; encode_indent (enc);
474	}	538	}
475	}	539	}
476	else	540	else
477	{	541	{
478	if (hv_iterinit (hv) \|\| SvMAGICAL (hv))	542	if (hv_iterinit (hv) \|\| SvMAGICAL (hv))
479	if ((he = hv_iternext (hv)))	543	if ((he = hv_iternext (hv)))
		544	{
		545	encode_nl (enc); ++enc->indent;
		546
480	for (;;)	547	for (;;)
481	{	548	{
482	encode_indent (enc);	549	encode_indent (enc);
483	encode_hk (enc, he);	550	encode_hk (enc, he);
484	encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he));	551	encode_sv (enc, expect_false (SvMAGICAL (hv)) ? hv_iterval (hv, he) : HeVAL (he));
485		552
486	if (!(he = hv_iternext (hv)))	553	if (!(he = hv_iternext (hv)))
487	break;	554	break;
488		555
489	encode_comma (enc);	556	encode_comma (enc);
490	}	557	}
491	}
492		558
		559	encode_nl (enc); --enc->indent; encode_indent (enc);
		560	}
		561	}
		562
493	encode_nl (enc);	563	encode_ch (enc, '}');
494
495	--enc->indent; encode_indent (enc); encode_ch (enc, '}');
496	}	564	}
497		565
498	// encode objects, arrays and special \0=false and \1=true values.	566	// encode objects, arrays and special \0=false and \1=true values.
499	static void	567	static void
500	encode_rv (enc_t enc, SV sv)	568	encode_rv (enc_t enc, SV sv)
…		…
577		645
578	if (len == 1 && *pv == '1')	646	if (len == 1 && *pv == '1')
579	encode_str (enc, "true", 4, 0);	647	encode_str (enc, "true", 4, 0);
580	else if (len == 1 && *pv == '0')	648	else if (len == 1 && *pv == '0')
581	encode_str (enc, "false", 5, 0);	649	encode_str (enc, "false", 5, 0);
		650	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		651	encode_str (enc, "null", 4, 0);
582	else	652	else
583	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	653	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
584	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	654	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
585	}	655	}
		656	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		657	encode_str (enc, "null", 4, 0);
586	else	658	else
587	croak ("encountered %s, but JSON can only represent references to arrays or hashes",	659	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
588	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	660	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
589	}	661	}
590		662
…		…
608	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);	680	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);
609	enc->cur += strlen (enc->cur);	681	enc->cur += strlen (enc->cur);
610	}	682	}
611	else if (SvIOKp (sv))	683	else if (SvIOKp (sv))
612	{	684	{
613	// we assume we can always read an IV as a UV	685	// we assume we can always read an IV as a UV and vice versa
614	if (SvUV (sv) & ~(UV)0x7fff)	686	// we assume two's complement
615	{	687	// we assume no aliasing issues in the union
616	// large integer, use the (rather slow) snprintf way.	688	if (SvIsUV (sv) ? SvUVX (sv) <= 59000
617	need (enc, sizeof (UV) * 3);	689	: SvIVX (sv) <= 59000 && SvIVX (sv) >= -59000)
618	enc->cur +=
619	SvIsUV(sv)
620	? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv))
621	: snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv));
622	}
623	else
624	{	690	{
625	// optimise the "small number case"	691	// optimise the "small number case"
626	// code will likely be branchless and use only a single multiplication	692	// code will likely be branchless and use only a single multiplication
		693	// works for numbers up to 59074
627	I32 i = SvIV (sv);	694	I32 i = SvIVX (sv);
628	U32 u;	695	U32 u;
629	char digit, nz = 0;	696	char digit, nz = 0;
630		697
631	need (enc, 6);	698	need (enc, 6);
632		699
…		…
638		705
639	// now output digit by digit, each time masking out the integer part	706	// now output digit by digit, each time masking out the integer part
640	// and multiplying by 5 while moving the decimal point one to the right,	707	// and multiplying by 5 while moving the decimal point one to the right,
641	// resulting in a net multiplication by 10.	708	// resulting in a net multiplication by 10.
642	// we always write the digit to memory but conditionally increment	709	// we always write the digit to memory but conditionally increment
643	// the pointer, to ease the usage of conditional move instructions.	710	// the pointer, to enable the use of conditional move instructions.
644	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffff) 5;	711	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffffUL) 5;
645	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffff) 5;	712	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffffUL) 5;
646	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffff) 5;	713	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffffUL) 5;
647	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffff) 5;	714	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffffUL) 5;
648	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'	715	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'
649	}	716	}
		717	else
		718	{
		719	// large integer, use the (rather slow) snprintf way.
		720	need (enc, IVUV_MAXCHARS);
		721	enc->cur +=
		722	SvIsUV(sv)
		723	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
		724	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
		725	}
650	}	726	}
651	else if (SvROK (sv))	727	else if (SvROK (sv))
652	encode_rv (enc, SvRV (sv));	728	encode_rv (enc, SvRV (sv));
653	else if (!SvOK (sv))	729	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
654	encode_str (enc, "null", 4, 0);	730	encode_str (enc, "null", 4, 0);
655	else	731	else
656	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	732	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
657	SvPV_nolen (sv), SvFLAGS (sv));	733	SvPV_nolen (sv), SvFLAGS (sv));
658	}	734	}
…		…
668	enc.json = *json;	744	enc.json = *json;
669	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	745	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
670	enc.cur = SvPVX (enc.sv);	746	enc.cur = SvPVX (enc.sv);
671	enc.end = SvEND (enc.sv);	747	enc.end = SvEND (enc.sv);
672	enc.indent = 0;	748	enc.indent = 0;
673	enc.maxdepth = DEC_DEPTH (enc.json.flags);	749	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL
		750	: enc.json.flags & F_LATIN1 ? 0x000100UL
		751	: 0x110000UL;
674		752
675	SvPOK_only (enc.sv);	753	SvPOK_only (enc.sv);
676	encode_sv (&enc, scalar);	754	encode_sv (&enc, scalar);
677		755
678	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	756	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
…		…
699	JSON json;	777	JSON json;
700	U32 depth; // recursion depth	778	U32 depth; // recursion depth
701	U32 maxdepth; // recursion depth limit	779	U32 maxdepth; // recursion depth limit
702	} dec_t;	780	} dec_t;
703		781
704	inline void	782	INLINE void
		783	decode_comment (dec_t *dec)
		784	{
		785	// only '#'-style comments allowed a.t.m.
		786
		787	while (dec->cur && dec->cur != 0x0a && *dec->cur != 0x0d)
		788	++dec->cur;
		789	}
		790
		791	INLINE void
705	decode_ws (dec_t *dec)	792	decode_ws (dec_t *dec)
706	{	793	{
707	for (;;)	794	for (;;)
708	{	795	{
709	char ch = *dec->cur;	796	char ch = *dec->cur;
710		797
711	if (ch > 0x20	798	if (ch > 0x20)
		799	{
		800	if (expect_false (ch == '#'))
		801	{
		802	if (dec->json.flags & F_RELAXED)
		803	decode_comment (dec);
		804	else
		805	break;
		806	}
		807	else
		808	break;
		809	}
712	\|\| (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09))	810	else if (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)
713	break;	811	break; // parse error, but let higher level handle it, gives better error messages
714
715	if (ch == '#' && dec->json.flags & F_RELAXED)
716	++dec->cur;
717		812
718	++dec->cur;	813	++dec->cur;
719	}	814	}
720	}	815	}
721		816
…		…
725	if (*dec->cur != ch) \	820	if (*dec->cur != ch) \
726	ERR (# ch " expected"); \	821	ERR (# ch " expected"); \
727	++dec->cur; \	822	++dec->cur; \
728	SE	823	SE
729		824
730	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")	825	#define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED)
731	#define DEC_DEC_DEPTH --dec->depth	826	#define DEC_DEC_DEPTH --dec->depth
732		827
733	static SV decode_sv (dec_t dec);	828	static SV decode_sv (dec_t dec);
734		829
735	static signed char decode_hexdigit[256];	830	static signed char decode_hexdigit[256];
…		…
827		922
828	if (hi >= 0x80)	923	if (hi >= 0x80)
829	{	924	{
830	utf8 = 1;	925	utf8 = 1;
831		926
832	cur = (char *)uvuni_to_utf8_flags (cur, hi, 0);	927	cur = encode_utf8 (cur, hi);
833	}	928	}
834	else	929	else
835	*cur++ = hi;	930	*cur++ = hi;
836	}	931	}
837	break;	932	break;
…		…
839	default:	934	default:
840	--dec_cur;	935	--dec_cur;
841	ERR ("illegal backslash escape sequence in string");	936	ERR ("illegal backslash escape sequence in string");
842	}	937	}
843	}	938	}
844	else if (expect_true (ch >= 0x20 && ch <= 0x7f))	939	else if (expect_true (ch >= 0x20 && ch < 0x80))
845	*cur++ = ch;	940	*cur++ = ch;
846	else if (ch >= 0x80)	941	else if (ch >= 0x80)
847	{	942	{
848	STRLEN clen;	943	STRLEN clen;
849	UV uch;	944	UV uch;
…		…
972		1067
973	if (!is_nv)	1068	if (!is_nv)
974	{	1069	{
975	int len = dec->cur - start;	1070	int len = dec->cur - start;
976		1071
977	// special case the rather common 1..4-digit-int case, assumes 32 bit ints or so	1072	// special case the rather common 1..5-digit-int case
978	if (*start == '-')	1073	if (*start == '-')
979	switch (len)	1074	switch (len)
980	{	1075	{
981	case 2: return newSViv (-( start [1] - '0' * 1));	1076	case 2: return newSViv (-( start [1] - '0' * 1));
982	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	1077	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));
983	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));	1078	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
984	case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));	1079	case 5: return newSViv (-( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
		1080	case 6: return newSViv (-(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));
985	}	1081	}
986	else	1082	else
987	switch (len)	1083	switch (len)
988	{	1084	{
989	case 1: return newSViv ( start [0] - '0' * 1);	1085	case 1: return newSViv ( start [0] - '0' * 1);
990	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	1086	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
991	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);	1087	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
992	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);	1088	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
		1089	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);
993	}	1090	}
994		1091
995	{	1092	{
996	UV uv;	1093	UV uv;
997	int numtype = grok_number (start, len, &uv);	1094	int numtype = grok_number (start, len, &uv);
…		…
1105	char *p = dec->cur;	1202	char *p = dec->cur;
1106	char *e = p + 24; // only try up to 24 bytes	1203	char *e = p + 24; // only try up to 24 bytes
1107		1204
1108	for (;;)	1205	for (;;)
1109	{	1206	{
1110	// the >= 0x80 is true on most architectures	1207	// the >= 0x80 is false on most architectures
1111	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')	1208	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')
1112	{	1209	{
1113	// slow path, back up and use decode_str	1210	// slow path, back up and use decode_str
1114	SV *key = decode_str (dec);	1211	SV *key = decode_str (dec);
1115	if (!key)	1212	if (!key)
…		…
1246		1343
1247	static SV *	1344	static SV *
1248	decode_sv (dec_t *dec)	1345	decode_sv (dec_t *dec)
1249	{	1346	{
1250	// the beauty of JSON: you need exactly one character lookahead	1347	// the beauty of JSON: you need exactly one character lookahead
1251	// to parse anything.	1348	// to parse everything.
1252	switch (*dec->cur)	1349	switch (*dec->cur)
1253	{	1350	{
1254	case '"': ++dec->cur; return decode_str (dec);	1351	case '"': ++dec->cur; return decode_str (dec);
1255	case '[': ++dec->cur; return decode_av (dec);	1352	case '[': ++dec->cur; return decode_av (dec);
1256	case '{': ++dec->cur; return decode_hv (dec);	1353	case '{': ++dec->cur; return decode_hv (dec);
1257		1354
1258	case '-':	1355	case '-':
1259	case '0': case '1': case '2': case '3': case '4':	1356	case '0': case '1': case '2': case '3': case '4':
1260	case '5': case '6': case '7': case '8': case '9':	1357	case '5': case '6': case '7': case '8': case '9':
1261	return decode_num (dec);	1358	return decode_num (dec);
…		…
1263	case 't':	1360	case 't':
1264	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1361	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1265	{	1362	{
1266	dec->cur += 4;	1363	dec->cur += 4;
1267	#if JSON_SLOW	1364	#if JSON_SLOW
1268	json_true = get_sv ("JSON::XS::true", 1); SvREADONLY_on (json_true);	1365	json_true = get_bool ("JSON::XS::true");
1269	#endif	1366	#endif
1270	return SvREFCNT_inc (json_true);	1367	return newSVsv (json_true);
1271	}	1368	}
1272	else	1369	else
1273	ERR ("'true' expected");	1370	ERR ("'true' expected");
1274		1371
1275	break;	1372	break;
…		…
1277	case 'f':	1374	case 'f':
1278	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1375	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1279	{	1376	{
1280	dec->cur += 5;	1377	dec->cur += 5;
1281	#if JSON_SLOW	1378	#if JSON_SLOW
1282	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1379	json_false = get_bool ("JSON::XS::false");
1283	#endif	1380	#endif
1284	return SvREFCNT_inc (json_false);	1381	return newSVsv (json_false);
1285	}	1382	}
1286	else	1383	else
1287	ERR ("'false' expected");	1384	ERR ("'false' expected");
1288		1385
1289	break;	1386	break;
…		…
1307	fail:	1404	fail:
1308	return 0;	1405	return 0;
1309	}	1406	}
1310		1407
1311	static SV *	1408	static SV *
1312	decode_json (SV string, JSON json, UV *offset_return)	1409	decode_json (SV string, JSON json, STRLEN *offset_return)
1313	{	1410	{
1314	dec_t dec;	1411	dec_t dec;
1315	UV offset;	1412	STRLEN offset;
1316	SV *sv;	1413	SV *sv;
1317		1414
1318	SvGETMAGIC (string);	1415	SvGETMAGIC (string);
1319	SvUPGRADE (string, SVt_PV);	1416	SvUPGRADE (string, SVt_PV);
1320		1417
1321	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))	1418	if (SvCUR (string) > json->max_size && json->max_size)
1322	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1419	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1323	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));	1420	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
1324		1421
1325	if (json->flags & F_UTF8)	1422	if (json->flags & F_UTF8)
1326	sv_utf8_downgrade (string, 0);	1423	sv_utf8_downgrade (string, 0);
1327	else	1424	else
1328	sv_utf8_upgrade (string);	1425	sv_utf8_upgrade (string);
1329		1426
1330	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1427	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1331		1428
1332	dec.json = *json;	1429	dec.json = *json;
1333	dec.cur = SvPVX (string);	1430	dec.cur = SvPVX (string);
1334	dec.end = SvEND (string);	1431	dec.end = SvEND (string);
1335	dec.err = 0;	1432	dec.err = 0;
1336	dec.depth = 0;	1433	dec.depth = 0;
1337	dec.maxdepth = DEC_DEPTH (dec.json.flags);
1338		1434
1339	if (dec.json.cb_object \|\| dec.json.cb_sk_object)	1435	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
1340	dec.json.flags \|= F_HOOK;	1436	dec.json.flags \|= F_HOOK;
1341		1437
1342	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1438	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
…		…
1393		1489
1394	return sv;	1490	return sv;
1395	}	1491	}
1396		1492
1397	/////////////////////////////////////////////////////////////////////////////	1493	/////////////////////////////////////////////////////////////////////////////
		1494	// incremental parser
		1495
		1496	static void
		1497	incr_parse (JSON *self)
		1498	{
		1499	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1500
		1501	for (;;)
		1502	{
		1503	//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
		1504	switch (self->incr_mode)
		1505	{
		1506	// only used for intiial whitespace skipping
		1507	case INCR_M_WS:
		1508	for (;;)
		1509	{
		1510	if (*p > 0x20)
		1511	{
		1512	self->incr_mode = INCR_M_JSON;
		1513	goto incr_m_json;
		1514	}
		1515	else if (!*p)
		1516	goto interrupt;
		1517
		1518	++p;
		1519	}
		1520
		1521	// skip a single char inside a string (for \\-processing)
		1522	case INCR_M_BS:
		1523	if (!*p)
		1524	goto interrupt;
		1525
		1526	++p;
		1527	self->incr_mode = INCR_M_STR;
		1528	goto incr_m_str;
		1529
		1530	// inside a string
		1531	case INCR_M_STR:
		1532	incr_m_str:
		1533	for (;;)
		1534	{
		1535	if (*p == '"')
		1536	{
		1537	++p;
		1538	self->incr_mode = INCR_M_JSON;
		1539
		1540	if (!self->incr_nest)
		1541	goto interrupt;
		1542
		1543	goto incr_m_json;
		1544	}
		1545	else if (*p == '\\')
		1546	{
		1547	++p; // "virtually" consumes character after \
		1548
		1549	if (!*p) // if at end of string we have to switch modes
		1550	{
		1551	self->incr_mode = INCR_M_BS;
		1552	goto interrupt;
		1553	}
		1554	}
		1555	else if (!*p)
		1556	goto interrupt;
		1557
		1558	++p;
		1559	}
		1560
		1561	// after initial ws, outside string
		1562	case INCR_M_JSON:
		1563	incr_m_json:
		1564	for (;;)
		1565	{
		1566	switch (*p++)
		1567	{
		1568	case 0:
		1569	--p;
		1570	goto interrupt;
		1571
		1572	case 0x09:
		1573	case 0x0a:
		1574	case 0x0d:
		1575	case 0x20:
		1576	if (!self->incr_nest)
		1577	{
		1578	--p; // do not eat the whitespace, let the next round do it
		1579	goto interrupt;
		1580	}
		1581	break;
		1582
		1583	case '"':
		1584	self->incr_mode = INCR_M_STR;
		1585	goto incr_m_str;
		1586
		1587	case '[':
		1588	case '{':
		1589	if (++self->incr_nest > self->max_depth)
		1590	croak (ERR_NESTING_EXCEEDED);
		1591	break;
		1592
		1593	case ']':
		1594	case '}':
		1595	if (!--self->incr_nest)
		1596	goto interrupt;
		1597	}
		1598	}
		1599	}
		1600
		1601	modechange:
		1602	;
		1603	}
		1604
		1605	interrupt:
		1606	self->incr_pos = p - SvPVX (self->incr_text);
		1607	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
		1608	}
		1609
		1610	/////////////////////////////////////////////////////////////////////////////
1398	// XS interface functions	1611	// XS interface functions
1399		1612
1400	MODULE = JSON::XS PACKAGE = JSON::XS	1613	MODULE = JSON::XS PACKAGE = JSON::XS
1401		1614
1402	BOOT:	1615	BOOT:
…		…
1411	: -1;	1624	: -1;
1412		1625
1413	json_stash = gv_stashpv ("JSON::XS" , 1);	1626	json_stash = gv_stashpv ("JSON::XS" , 1);
1414	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	1627	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);
1415		1628
1416	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );	1629	json_true = get_bool ("JSON::XS::true");
1417	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1630	json_false = get_bool ("JSON::XS::false");
1418	}	1631	}
1419		1632
1420	PROTOTYPES: DISABLE	1633	PROTOTYPES: DISABLE
1421		1634
1422	void CLONE (...)	1635	void CLONE (...)
…		…
1427	void new (char *klass)	1640	void new (char *klass)
1428	PPCODE:	1641	PPCODE:
1429	{	1642	{
1430	SV *pv = NEWSV (0, sizeof (JSON));	1643	SV *pv = NEWSV (0, sizeof (JSON));
1431	SvPOK_only (pv);	1644	SvPOK_only (pv);
1432	Zero (SvPVX (pv), 1, JSON);	1645	json_init ((JSON *)SvPVX (pv));
1433	((JSON *)SvPVX (pv))->flags = F_DEFAULT;	1646	XPUSHs (sv_2mortal (sv_bless (
1434	XPUSHs (sv_2mortal (sv_bless (newRV_noinc (pv), JSON_STASH)));	1647	newRV_noinc (pv),
		1648	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
		1649	)));
1435	}	1650	}
1436		1651
1437	void ascii (JSON *self, int enable = 1)	1652	void ascii (JSON *self, int enable = 1)
1438	ALIAS:	1653	ALIAS:
1439	ascii = F_ASCII	1654	ascii = F_ASCII
…		…
1447	allow_nonref = F_ALLOW_NONREF	1662	allow_nonref = F_ALLOW_NONREF
1448	shrink = F_SHRINK	1663	shrink = F_SHRINK
1449	allow_blessed = F_ALLOW_BLESSED	1664	allow_blessed = F_ALLOW_BLESSED
1450	convert_blessed = F_CONV_BLESSED	1665	convert_blessed = F_CONV_BLESSED
1451	relaxed = F_RELAXED	1666	relaxed = F_RELAXED
		1667	allow_unknown = F_ALLOW_UNKNOWN
1452	PPCODE:	1668	PPCODE:
1453	{	1669	{
1454	if (enable)	1670	if (enable)
1455	self->flags \|= ix;	1671	self->flags \|= ix;
1456	else	1672	else
1457	self->flags &= ~ix;	1673	self->flags &= ~ix;
1458		1674
1459	XPUSHs (ST (0));	1675	XPUSHs (ST (0));
1460	}	1676	}
1461		1677
1462	void max_depth (JSON *self, UV max_depth = 0x80000000UL)	1678	void get_ascii (JSON *self)
		1679	ALIAS:
		1680	get_ascii = F_ASCII
		1681	get_latin1 = F_LATIN1
		1682	get_utf8 = F_UTF8
		1683	get_indent = F_INDENT
		1684	get_canonical = F_CANONICAL
		1685	get_space_before = F_SPACE_BEFORE
		1686	get_space_after = F_SPACE_AFTER
		1687	get_allow_nonref = F_ALLOW_NONREF
		1688	get_shrink = F_SHRINK
		1689	get_allow_blessed = F_ALLOW_BLESSED
		1690	get_convert_blessed = F_CONV_BLESSED
		1691	get_relaxed = F_RELAXED
		1692	get_allow_unknown = F_ALLOW_UNKNOWN
1463	PPCODE:	1693	PPCODE:
1464	{	1694	XPUSHs (boolSV (self->flags & ix));
1465	UV log2 = 0;
1466		1695
1467	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;	1696	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1468		1697	PPCODE:
1469	while ((1UL << log2) < max_depth)	1698	self->max_depth = max_depth;
1470	++log2;
1471
1472	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1473
1474	XPUSHs (ST (0));	1699	XPUSHs (ST (0));
1475	}
1476		1700
		1701	U32 get_max_depth (JSON *self)
		1702	CODE:
		1703	RETVAL = self->max_depth;
		1704	OUTPUT:
		1705	RETVAL
		1706
1477	void max_size (JSON *self, UV max_size = 0)	1707	void max_size (JSON *self, U32 max_size = 0)
1478	PPCODE:	1708	PPCODE:
1479	{	1709	self->max_size = max_size;
1480	UV log2 = 0;
1481
1482	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
1483	if (max_size == 1) max_size = 2;
1484
1485	while ((1UL << log2) < max_size)
1486	++log2;
1487
1488	self->flags = self->flags & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
1489
1490	XPUSHs (ST (0));	1710	XPUSHs (ST (0));
1491	}	1711
		1712	int get_max_size (JSON *self)
		1713	CODE:
		1714	RETVAL = self->max_size;
		1715	OUTPUT:
		1716	RETVAL
1492		1717
1493	void filter_json_object (JSON self, SV cb = &PL_sv_undef)	1718	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1494	PPCODE:	1719	PPCODE:
1495	{	1720	{
1496	SvREFCNT_dec (self->cb_object);	1721	SvREFCNT_dec (self->cb_object);
…		…
1530	XPUSHs (decode_json (jsonstr, self, 0));	1755	XPUSHs (decode_json (jsonstr, self, 0));
1531		1756
1532	void decode_prefix (JSON self, SV jsonstr)	1757	void decode_prefix (JSON self, SV jsonstr)
1533	PPCODE:	1758	PPCODE:
1534	{	1759	{
1535	UV offset;	1760	STRLEN offset;
1536	EXTEND (SP, 2);	1761	EXTEND (SP, 2);
1537	PUSHs (decode_json (jsonstr, self, &offset));	1762	PUSHs (decode_json (jsonstr, self, &offset));
1538	PUSHs (sv_2mortal (newSVuv (offset)));	1763	PUSHs (sv_2mortal (newSVuv (offset)));
		1764	}
		1765
		1766	void incr_parse (JSON self, SV jsonstr = 0)
		1767	PPCODE:
		1768	{
		1769	if (!self->incr_text)
		1770	self->incr_text = newSVpvn ("", 0);
		1771
		1772	// append data, if any
		1773	if (jsonstr)
		1774	{
		1775	if (SvUTF8 (jsonstr) && !SvUTF8 (self->incr_text))
		1776	{
		1777	/* utf-8-ness differs, need to upgrade */
		1778	sv_utf8_upgrade (self->incr_text);
		1779
		1780	if (self->incr_pos)
		1781	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		1782	- (U8 *)SvPVX (self->incr_text);
		1783	}
		1784
		1785	{
		1786	STRLEN len;
		1787	const char *str = SvPV (jsonstr, len);
		1788	SvGROW (self->incr_text, SvCUR (self->incr_text) + len + 1);
		1789	Move (str, SvEND (self->incr_text), len, char);
		1790	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
		1791	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
		1792	}
		1793	}
		1794
		1795	if (GIMME_V != G_VOID)
		1796	do
		1797	{
		1798	STRLEN offset;
		1799
		1800	if (!INCR_DONE (self))
		1801	{
		1802	incr_parse (self);
		1803
		1804	if (self->incr_pos > self->max_size && self->max_size)
		1805	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		1806	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
		1807
		1808	if (!INCR_DONE (self))
		1809	break;
		1810	}
		1811
		1812	XPUSHs (decode_json (self->incr_text, self, &offset));
		1813
		1814	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + offset);
		1815	self->incr_pos -= offset;
		1816	self->incr_nest = 0;
		1817	self->incr_mode = 0;
		1818	}
		1819	while (GIMME_V == G_ARRAY);
		1820	}
		1821
		1822	SV incr_text (JSON self)
		1823	ATTRS: lvalue
		1824	CODE:
		1825	{
		1826	if (self->incr_pos)
		1827	croak ("incr_text can not be called when the incremental parser already started parsing");
		1828
		1829	RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef;
		1830	}
		1831	OUTPUT:
		1832	RETVAL
		1833
		1834	void incr_skip (JSON *self)
		1835	CODE:
		1836	{
		1837	if (self->incr_pos)
		1838	{
		1839	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos);
		1840	self->incr_pos = 0;
		1841	self->incr_nest = 0;
		1842	self->incr_mode = 0;
		1843	}
1539	}	1844	}
1540		1845
1541	void DESTROY (JSON *self)	1846	void DESTROY (JSON *self)
1542	CODE:	1847	CODE:
1543	SvREFCNT_dec (self->cb_sk_object);	1848	SvREFCNT_dec (self->cb_sk_object);
1544	SvREFCNT_dec (self->cb_object);	1849	SvREFCNT_dec (self->cb_object);
		1850	SvREFCNT_dec (self->incr_text);
1545		1851
1546	PROTOTYPES: ENABLE	1852	PROTOTYPES: ENABLE
1547		1853
1548	void to_json (SV *scalar)	1854	void encode_json (SV *scalar)
		1855	ALIAS:
		1856	to_json_ = 0
		1857	encode_json = F_UTF8
1549	PPCODE:	1858	PPCODE:
1550	{	1859	{
1551	JSON json = { F_DEFAULT \| F_UTF8 };	1860	JSON json;
		1861	json_init (&json);
		1862	json.flags \|= ix;
1552	XPUSHs (encode_json (scalar, &json));	1863	XPUSHs (encode_json (scalar, &json));
1553	}	1864	}
1554		1865
1555	void from_json (SV *jsonstr)	1866	void decode_json (SV *jsonstr)
		1867	ALIAS:
		1868	from_json_ = 0
		1869	decode_json = F_UTF8
1556	PPCODE:	1870	PPCODE:
1557	{	1871	{
1558	JSON json = { F_DEFAULT \| F_UTF8 };	1872	JSON json;
		1873	json_init (&json);
		1874	json.flags \|= ix;
1559	XPUSHs (decode_json (jsonstr, &json, 0));	1875	XPUSHs (decode_json (jsonstr, &json, 0));
1560	}	1876	}
1561		1877
		1878

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Comparing JSON-XS/XS.xs (file contents): Revision 1.63 by root, Mon Aug 27 01:49:01 2007 UTC vs. Revision 1.85 by root, Sat Apr 5 18:15:46 2008 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.63 by root, Mon Aug 27 01:49:01 2007 UTC vs.
Revision 1.85 by root, Sat Apr 5 18:15:46 2008 UTC