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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.72 by root, Wed Mar 19 04:08:22 2008 UTC vs.
Revision 1.104 by root, Tue Jan 19 00:31:13 2010 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
14		15
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	// guarantees, 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	// three extra for rounding, sign, and end of string
		23	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)
20		24
21	#define F_ASCII 0x00000001UL	25	#define F_ASCII 0x00000001UL
22	#define F_LATIN1 0x00000002UL	26	#define F_LATIN1 0x00000002UL
23	#define F_UTF8 0x00000004UL	27	#define F_UTF8 0x00000004UL
24	#define F_INDENT 0x00000008UL	28	#define F_INDENT 0x00000008UL
…		…
28	#define F_ALLOW_NONREF 0x00000100UL	32	#define F_ALLOW_NONREF 0x00000100UL
29	#define F_SHRINK 0x00000200UL	33	#define F_SHRINK 0x00000200UL
30	#define F_ALLOW_BLESSED 0x00000400UL	34	#define F_ALLOW_BLESSED 0x00000400UL
31	#define F_CONV_BLESSED 0x00000800UL	35	#define F_CONV_BLESSED 0x00000800UL
32	#define F_RELAXED 0x00001000UL	36	#define F_RELAXED 0x00001000UL
33		37	#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	38	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
39		39
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	40	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
44	#define F_DEFAULT (9UL << S_MAXDEPTH)
45		41
46	#define INIT_SIZE 32 // initial scalar size to be allocated	42	#define INIT_SIZE 32 // initial scalar size to be allocated
47	#define INDENT_STEP 3 // spaces per indentation level	43	#define INDENT_STEP 3 // spaces per indentation level
48		44
49	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size	45	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
…		…
64		60
65	#define IN_RANGE_INC(type,val,beg,end) \	61	#define IN_RANGE_INC(type,val,beg,end) \
66	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	62	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
67	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	63	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
68		64
		65	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"
		66
69	#ifdef USE_ITHREADS	67	#ifdef USE_ITHREADS
70	# define JSON_SLOW 1	68	# define JSON_SLOW 1
71	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))	69	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))
72	#else	70	#else
73	# define JSON_SLOW 0	71	# define JSON_SLOW 0
…		…
75	#endif	73	#endif
76		74
77	static HV json_stash, json_boolean_stash; // JSON::XS::	75	static HV json_stash, json_boolean_stash; // JSON::XS::
78	static SV json_true, json_false;	76	static SV json_true, json_false;
79		77
		78	enum {
		79	INCR_M_WS = 0, // initial whitespace skipping, must be 0
		80	INCR_M_STR, // inside string
		81	INCR_M_BS, // inside backslash
		82	INCR_M_C0, // inside comment in initial whitespace sequence
		83	INCR_M_C1, // inside comment in other places
		84	INCR_M_JSON // outside anything, count nesting
		85	};
		86
		87	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)
		88
80	typedef struct {	89	typedef struct {
81	U32 flags;	90	U32 flags;
		91	U32 max_depth;
		92	STRLEN max_size;
		93
82	SV *cb_object;	94	SV *cb_object;
83	HV *cb_sk_object;	95	HV *cb_sk_object;
		96
		97	// for the incremental parser
		98	SV *incr_text; // the source text so far
		99	STRLEN incr_pos; // the current offset into the text
		100	int incr_nest; // {[]}-nesting level
		101	unsigned char incr_mode;
84	} JSON;	102	} JSON;
		103
		104	INLINE void
		105	json_init (JSON *json)
		106	{
		107	Zero (json, 1, JSON);
		108	json->max_depth = 512;
		109	}
85		110
86	/////////////////////////////////////////////////////////////////////////////	111	/////////////////////////////////////////////////////////////////////////////
87	// utility functions	112	// utility functions
88		113
		114	INLINE SV *
		115	get_bool (const char *name)
		116	{
		117	SV *sv = get_sv (name, 1);
		118
		119	SvREADONLY_on (sv);
		120	SvREADONLY_on (SvRV (sv));
		121
		122	return sv;
		123	}
		124
89	INLINE void	125	INLINE void
90	shrink (SV *sv)	126	shrink (SV *sv)
91	{	127	{
92	sv_utf8_downgrade (sv, 1);	128	sv_utf8_downgrade (sv, 1);
		129
93	if (SvLEN (sv) > SvCUR (sv) + 1)	130	if (SvLEN (sv) > SvCUR (sv) + 1)
94	{	131	{
95	#ifdef SvPV_shrink_to_cur	132	#ifdef SvPV_shrink_to_cur
96	SvPV_shrink_to_cur (sv);	133	SvPV_shrink_to_cur (sv);
97	#elif defined (SvPV_renew)	134	#elif defined (SvPV_renew)
…		…
123	// this function takes advantage of this fact, although current gccs	160	// this function takes advantage of this fact, although current gccs
124	// seem to optimise the check for >= 0x80 away anyways	161	// seem to optimise the check for >= 0x80 away anyways
125	INLINE unsigned char *	162	INLINE unsigned char *
126	encode_utf8 (unsigned char *s, UV ch)	163	encode_utf8 (unsigned char *s, UV ch)
127	{	164	{
128	if (ch <= 0x7FF)	165	if (expect_false (ch < 0x000080))
129	{	166	*s++ = ch;
130	*s++ = (ch >> 6) \| 0xc0;	167	else if (expect_true (ch < 0x000800))
131	*s++ = (ch & 0x3f) \| 0x80;	168	*s++ = 0xc0 \| ( ch >> 6),
132	}	169	*s++ = 0x80 \| ( ch & 0x3f);
133	else	170	else if ( ch < 0x010000)
134	s = uvuni_to_utf8_flags (s, ch, 0);	171	*s++ = 0xe0 \| ( ch >> 12),
		172	*s++ = 0x80 \| ((ch >> 6) & 0x3f),
		173	*s++ = 0x80 \| ( ch & 0x3f);
		174	else if ( ch < 0x110000)
		175	*s++ = 0xf0 \| ( ch >> 18),
		176	*s++ = 0x80 \| ((ch >> 12) & 0x3f),
		177	*s++ = 0x80 \| ((ch >> 6) & 0x3f),
		178	*s++ = 0x80 \| ( ch & 0x3f);
135		179
136	return s;	180	return s;
137	}	181	}
138		182
		183	// convert offset pointer to character index, sv must be string
		184	static STRLEN
		185	ptr_to_index (SV sv, char offset)
		186	{
		187	return SvUTF8 (sv)
		188	? utf8_distance (offset, SvPVX (sv))
		189	: offset - SvPVX (sv);
		190	}
		191
		192	/////////////////////////////////////////////////////////////////////////////
		193	// fp hell
		194
		195	// scan a group of digits, and a trailing exponent
		196	static void
		197	json_atof_scan1 (const char s, NV accum, int *expo, int postdp)
		198	{
		199	UV uaccum = 0;
		200	int eaccum = 0;
		201
		202	for (;;)
		203	{
		204	U8 dig = (U8)*s - '0';
		205
		206	if (expect_false (dig >= 10))
		207	{
		208	if (dig == (U8)((U8)'.' - (U8)'0'))
		209	{
		210	++s;
		211	json_atof_scan1 (s, accum, expo, 1);
		212	}
		213	else if ((dig \| ' ') == 'e' - '0')
		214	{
		215	int exp2 = 0;
		216	int neg = 0;
		217
		218	++s;
		219
		220	if (*s == '-')
		221	{
		222	++s;
		223	neg = 1;
		224	}
		225	else if (*s == '+')
		226	++s;
		227
		228	while ((dig = (U8)*s - '0') < 10)
		229	exp2 = exp2 * 10 + *s++ - '0';
		230
		231	*expo += neg ? -exp2 : exp2;
		232	}
		233
		234	break;
		235	}
		236
		237	++s;
		238
		239	uaccum = uaccum * 10 + dig;
		240	++eaccum;
		241
		242	// if we have too many digits, then recurse for more
		243	// we actually do this for rather few digits
		244	if (uaccum >= (UV_MAX - 9) / 10)
		245	{
		246	if (postdp) *expo -= eaccum;
		247	json_atof_scan1 (s, accum, expo, postdp);
		248	if (postdp) *expo += eaccum;
		249
		250	break;
		251	}
		252	}
		253
		254	if (postdp) *expo -= eaccum;
		255	accum += uaccum pow (10., *expo);
		256	*expo += eaccum;
		257	}
		258
		259	static NV
		260	json_atof (const char *s)
		261	{
		262	NV accum = 0.;
		263	int expo = 0;
		264	int neg = 0;
		265
		266	if (*s == '-')
		267	{
		268	++s;
		269	neg = 1;
		270	}
		271
		272	json_atof_scan1 (s, &accum, &expo, 0);
		273
		274	return neg ? -accum : accum;
		275	}
139	/////////////////////////////////////////////////////////////////////////////	276	/////////////////////////////////////////////////////////////////////////////
140	// encoder	277	// encoder
141		278
142	// structure used for encoding JSON	279	// structure used for encoding JSON
143	typedef struct	280	typedef struct
…		…
145	char *cur; // SvPVX (sv) + current output position	282	char *cur; // SvPVX (sv) + current output position
146	char *end; // SvEND (sv)	283	char *end; // SvEND (sv)
147	SV *sv; // result scalar	284	SV *sv; // result scalar
148	JSON json;	285	JSON json;
149	U32 indent; // indentation level	286	U32 indent; // indentation level
150	U32 maxdepth; // max. indentation/recursion level
151	UV limit; // escape character values >= this value when encoding	287	UV limit; // escape character values >= this value when encoding
152	} enc_t;	288	} enc_t;
153		289
154	INLINE void	290	INLINE void
155	need (enc_t *enc, STRLEN len)	291	need (enc_t *enc, STRLEN len)
156	{	292	{
157	if (expect_false (enc->cur + len >= enc->end))	293	if (expect_false (enc->cur + len >= enc->end))
158	{	294	{
159	STRLEN cur = enc->cur - SvPVX (enc->sv);	295	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
160	SvGROW (enc->sv, cur + len + 1);	296	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
161	enc->cur = SvPVX (enc->sv) + cur;	297	enc->cur = SvPVX (enc->sv) + cur;
162	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	298	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
163	}	299	}
164	}	300	}
165		301
…		…
227	clen = 1;	363	clen = 1;
228	}	364	}
229		365
230	if (uch < 0x80/0x20/ \|\| uch >= enc->limit)	366	if (uch < 0x80/0x20/ \|\| uch >= enc->limit)
231	{	367	{
232	if (uch > 0xFFFFUL)	368	if (uch >= 0x10000UL)
233	{	369	{
234	if (uch > 0x10FFFFUL)	370	if (uch >= 0x110000UL)
235	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);	371	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
236		372
237	need (enc, len += 11);	373	need (enc, len += 11);
238	sprintf (enc->cur, "\\u%04x\\u%04x",	374	sprintf (enc->cur, "\\u%04x\\u%04x",
239	(int)((uch - 0x10000) / 0x400 + 0xD800),	375	(int)((uch - 0x10000) / 0x400 + 0xD800),
240	(int)((uch - 0x10000) % 0x400 + 0xDC00));	376	(int)((uch - 0x10000) % 0x400 + 0xDC00));
241	enc->cur += 12;	377	enc->cur += 12;
242	}	378	}
243	else	379	else
244	{	380	{
245	static char hexdigit [16] = "0123456789abcdef";
246	need (enc, len += 5);	381	need (enc, len += 5);
247	*enc->cur++ = '\\';	382	*enc->cur++ = '\\';
248	*enc->cur++ = 'u';	383	*enc->cur++ = 'u';
249	*enc->cur++ = hexdigit [ uch >> 12 ];	384	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
250	*enc->cur++ = hexdigit [(uch >> 8) & 15];	385	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
251	*enc->cur++ = hexdigit [(uch >> 4) & 15];	386	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
252	*enc->cur++ = hexdigit [(uch >> 0) & 15];	387	*enc->cur++ = PL_hexdigit [(uch >> 0) & 15];
253	}	388	}
254		389
255	str += clen;	390	str += clen;
256	}	391	}
257	else if (enc->json.flags & F_LATIN1)	392	else if (enc->json.flags & F_LATIN1)
…		…
328	static void	463	static void
329	encode_av (enc_t enc, AV av)	464	encode_av (enc_t enc, AV av)
330	{	465	{
331	int i, len = av_len (av);	466	int i, len = av_len (av);
332		467
333	if (enc->indent >= enc->maxdepth)	468	if (enc->indent >= enc->json.max_depth)
334	croak ("data structure too deep (hit recursion limit)");	469	croak (ERR_NESTING_EXCEEDED);
335		470
336	encode_ch (enc, '[');	471	encode_ch (enc, '[');
337		472
338	if (len >= 0)	473	if (len >= 0)
339	{	474	{
…		…
413		548
414	static void	549	static void
415	encode_hv (enc_t enc, HV hv)	550	encode_hv (enc_t enc, HV hv)
416	{	551	{
417	HE *he;	552	HE *he;
418	int count;
419		553
420	if (enc->indent >= enc->maxdepth)	554	if (enc->indent >= enc->json.max_depth)
421	croak ("data structure too deep (hit recursion limit)");	555	croak (ERR_NESTING_EXCEEDED);
422		556
423	encode_ch (enc, '{');	557	encode_ch (enc, '{');
424		558
425	// for canonical output we have to sort by keys first	559	// for canonical output we have to sort by keys first
426	// actually, this is mostly due to the stupid so-called	560	// actually, this is mostly due to the stupid so-called
427	// security workaround added somewhere in 5.8.x.	561	// security workaround added somewhere in 5.8.x
428	// that randomises hash orderings	562	// that randomises hash orderings
429	if (enc->json.flags & F_CANONICAL)	563	if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv))
430	{	564	{
431	int count = hv_iterinit (hv);	565	int count = hv_iterinit (hv);
432		566
433	if (SvMAGICAL (hv))	567	if (SvMAGICAL (hv))
434	{	568	{
…		…
607		741
608	if (len == 1 && *pv == '1')	742	if (len == 1 && *pv == '1')
609	encode_str (enc, "true", 4, 0);	743	encode_str (enc, "true", 4, 0);
610	else if (len == 1 && *pv == '0')	744	else if (len == 1 && *pv == '0')
611	encode_str (enc, "false", 5, 0);	745	encode_str (enc, "false", 5, 0);
		746	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		747	encode_str (enc, "null", 4, 0);
612	else	748	else
613	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	749	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
614	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	750	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
615	}	751	}
		752	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		753	encode_str (enc, "null", 4, 0);
616	else	754	else
617	croak ("encountered %s, but JSON can only represent references to arrays or hashes",	755	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
618	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	756	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
619	}	757	}
620		758
…		…
638	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);	776	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);
639	enc->cur += strlen (enc->cur);	777	enc->cur += strlen (enc->cur);
640	}	778	}
641	else if (SvIOKp (sv))	779	else if (SvIOKp (sv))
642	{	780	{
643	// we assume we can always read an IV as a UV	781	// we assume we can always read an IV as a UV and vice versa
644	if (SvUV (sv) & ~(UV)0x7fff)	782	// we assume two's complement
645	{	783	// we assume no aliasing issues in the union
646	// large integer, use the (rather slow) snprintf way.	784	if (SvIsUV (sv) ? SvUVX (sv) <= 59000
647	need (enc, sizeof (UV) * 3);	785	: SvIVX (sv) <= 59000 && SvIVX (sv) >= -59000)
648	enc->cur +=
649	SvIsUV(sv)
650	? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv))
651	: snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv));
652	}
653	else
654	{	786	{
655	// optimise the "small number case"	787	// optimise the "small number case"
656	// code will likely be branchless and use only a single multiplication	788	// code will likely be branchless and use only a single multiplication
		789	// works for numbers up to 59074
657	I32 i = SvIV (sv);	790	I32 i = SvIVX (sv);
658	U32 u;	791	U32 u;
659	char digit, nz = 0;	792	char digit, nz = 0;
660		793
661	need (enc, 6);	794	need (enc, 6);
662		795
…		…
668		801
669	// now output digit by digit, each time masking out the integer part	802	// now output digit by digit, each time masking out the integer part
670	// and multiplying by 5 while moving the decimal point one to the right,	803	// and multiplying by 5 while moving the decimal point one to the right,
671	// resulting in a net multiplication by 10.	804	// resulting in a net multiplication by 10.
672	// we always write the digit to memory but conditionally increment	805	// we always write the digit to memory but conditionally increment
673	// the pointer, to ease the usage of conditional move instructions.	806	// the pointer, to enable the use of conditional move instructions.
674	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffff) 5;	807	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffffUL) 5;
675	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffff) 5;	808	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffffUL) 5;
676	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffff) 5;	809	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffffUL) 5;
677	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffff) 5;	810	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffffUL) 5;
678	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'	811	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'
679	}	812	}
		813	else
		814	{
		815	// large integer, use the (rather slow) snprintf way.
		816	need (enc, IVUV_MAXCHARS);
		817	enc->cur +=
		818	SvIsUV(sv)
		819	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
		820	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
		821	}
680	}	822	}
681	else if (SvROK (sv))	823	else if (SvROK (sv))
682	encode_rv (enc, SvRV (sv));	824	encode_rv (enc, SvRV (sv));
683	else if (!SvOK (sv))	825	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
684	encode_str (enc, "null", 4, 0);	826	encode_str (enc, "null", 4, 0);
685	else	827	else
686	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	828	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
687	SvPV_nolen (sv), SvFLAGS (sv));	829	SvPV_nolen (sv), SvFLAGS (sv));
688	}	830	}
…		…
698	enc.json = *json;	840	enc.json = *json;
699	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	841	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
700	enc.cur = SvPVX (enc.sv);	842	enc.cur = SvPVX (enc.sv);
701	enc.end = SvEND (enc.sv);	843	enc.end = SvEND (enc.sv);
702	enc.indent = 0;	844	enc.indent = 0;
703	enc.maxdepth = DEC_DEPTH (enc.json.flags);
704	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL	845	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL
705	: enc.json.flags & F_LATIN1 ? 0x000100UL	846	: enc.json.flags & F_LATIN1 ? 0x000100UL
706	: 0x10FFFFUL;	847	: 0x110000UL;
707		848
708	SvPOK_only (enc.sv);	849	SvPOK_only (enc.sv);
709	encode_sv (&enc, scalar);	850	encode_sv (&enc, scalar);
		851	encode_nl (&enc);
710		852
711	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	853	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
712	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	854	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
713		855
714	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	856	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
…		…
775	if (*dec->cur != ch) \	917	if (*dec->cur != ch) \
776	ERR (# ch " expected"); \	918	ERR (# ch " expected"); \
777	++dec->cur; \	919	++dec->cur; \
778	SE	920	SE
779		921
780	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")	922	#define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED)
781	#define DEC_DEC_DEPTH --dec->depth	923	#define DEC_DEC_DEPTH --dec->depth
782		924
783	static SV decode_sv (dec_t dec);	925	static SV decode_sv (dec_t dec);
784		926
785	static signed char decode_hexdigit[256];	927	static signed char decode_hexdigit[256];
…		…
889	default:	1031	default:
890	--dec_cur;	1032	--dec_cur;
891	ERR ("illegal backslash escape sequence in string");	1033	ERR ("illegal backslash escape sequence in string");
892	}	1034	}
893	}	1035	}
894	else if (expect_true (ch >= 0x20 && ch <= 0x7f))	1036	else if (expect_true (ch >= 0x20 && ch < 0x80))
895	*cur++ = ch;	1037	*cur++ = ch;
896	else if (ch >= 0x80)	1038	else if (ch >= 0x80)
897	{	1039	{
898	STRLEN clen;	1040	STRLEN clen;
899	UV uch;
900		1041
901	--dec_cur;	1042	--dec_cur;
902		1043
903	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);	1044	decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
904	if (clen == (STRLEN)-1)	1045	if (clen == (STRLEN)-1)
905	ERR ("malformed UTF-8 character in JSON string");	1046	ERR ("malformed UTF-8 character in JSON string");
906		1047
907	do	1048	do
908	cur++ = dec_cur++;	1049	cur++ = dec_cur++;
…		…
925	{	1066	{
926	STRLEN len = cur - buf;	1067	STRLEN len = cur - buf;
927		1068
928	if (sv)	1069	if (sv)
929	{	1070	{
930	SvGROW (sv, SvCUR (sv) + len + 1);	1071	STRLEN cur = SvCUR (sv);
		1072
		1073	if (SvLEN (sv) <= cur + len)
		1074	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
		1075
931	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1076	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
932	SvCUR_set (sv, SvCUR (sv) + len);	1077	SvCUR_set (sv, SvCUR (sv) + len);
933	}	1078	}
934	else	1079	else
935	sv = newSVpvn (buf, len);	1080	sv = newSVpvn (buf, len);
…		…
1026		1171
1027	// special case the rather common 1..5-digit-int case	1172	// special case the rather common 1..5-digit-int case
1028	if (*start == '-')	1173	if (*start == '-')
1029	switch (len)	1174	switch (len)
1030	{	1175	{
1031	case 2: return newSViv (-( start [1] - '0' * 1));	1176	case 2: return newSViv (-(IV)( start [1] - '0' * 1));
1032	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	1177	case 3: return newSViv (-(IV)( start [1] * 10 + start [2] - '0' * 11));
1033	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));	1178	case 4: return newSViv (-(IV)( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
1034	case 5: return newSViv (-( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));	1179	case 5: return newSViv (-(IV)( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
1035	case 6: return newSViv (-(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));	1180	case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));
1036	}	1181	}
1037	else	1182	else
1038	switch (len)	1183	switch (len)
1039	{	1184	{
1040	case 1: return newSViv ( start [0] - '0' * 1);	1185	case 1: return newSViv ( start [0] - '0' * 1);
1041	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	1186	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
1042	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);	1187	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
1043	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);	1188	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
1044	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);	1189	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);
1045	}	1190	}
1046		1191
1047	{	1192	{
1048	UV uv;	1193	UV uv;
1049	int numtype = grok_number (start, len, &uv);	1194	int numtype = grok_number (start, len, &uv);
…		…
1058	}	1203	}
1059		1204
1060	len -= *start == '-' ? 1 : 0;	1205	len -= *start == '-' ? 1 : 0;
1061		1206
1062	// does not fit into IV or UV, try NV	1207	// does not fit into IV or UV, try NV
1063	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1208	if (len <= NV_DIG)
1064	#if defined (LDBL_DIG)
1065	\|\| (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
1066	#endif
1067	)
1068	// fits into NV without loss of precision	1209	// fits into NV without loss of precision
1069	return newSVnv (Atof (start));	1210	return newSVnv (json_atof (start));
1070		1211
1071	// everything else fails, convert it to a string	1212	// everything else fails, convert it to a string
1072	return newSVpvn (start, dec->cur - start);	1213	return newSVpvn (start, dec->cur - start);
1073	}	1214	}
1074		1215
1075	// loss of precision here	1216	// loss of precision here
1076	return newSVnv (Atof (start));	1217	return newSVnv (json_atof (start));
1077		1218
1078	fail:	1219	fail:
1079	return 0;	1220	return 0;
1080	}	1221	}
1081		1222
…		…
1157	char *p = dec->cur;	1298	char *p = dec->cur;
1158	char *e = p + 24; // only try up to 24 bytes	1299	char *e = p + 24; // only try up to 24 bytes
1159		1300
1160	for (;;)	1301	for (;;)
1161	{	1302	{
1162	// the >= 0x80 is true on most architectures	1303	// the >= 0x80 is false on most architectures
1163	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')	1304	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')
1164	{	1305	{
1165	// slow path, back up and use decode_str	1306	// slow path, back up and use decode_str
1166	SV *key = decode_str (dec);	1307	SV *key = decode_str (dec);
1167	if (!key)	1308	if (!key)
…		…
1298		1439
1299	static SV *	1440	static SV *
1300	decode_sv (dec_t *dec)	1441	decode_sv (dec_t *dec)
1301	{	1442	{
1302	// the beauty of JSON: you need exactly one character lookahead	1443	// the beauty of JSON: you need exactly one character lookahead
1303	// to parse anything.	1444	// to parse everything.
1304	switch (*dec->cur)	1445	switch (*dec->cur)
1305	{	1446	{
1306	case '"': ++dec->cur; return decode_str (dec);	1447	case '"': ++dec->cur; return decode_str (dec);
1307	case '[': ++dec->cur; return decode_av (dec);	1448	case '[': ++dec->cur; return decode_av (dec);
1308	case '{': ++dec->cur; return decode_hv (dec);	1449	case '{': ++dec->cur; return decode_hv (dec);
1309		1450
1310	case '-':	1451	case '-':
1311	case '0': case '1': case '2': case '3': case '4':	1452	case '0': case '1': case '2': case '3': case '4':
1312	case '5': case '6': case '7': case '8': case '9':	1453	case '5': case '6': case '7': case '8': case '9':
1313	return decode_num (dec);	1454	return decode_num (dec);
…		…
1315	case 't':	1456	case 't':
1316	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1457	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1317	{	1458	{
1318	dec->cur += 4;	1459	dec->cur += 4;
1319	#if JSON_SLOW	1460	#if JSON_SLOW
1320	json_true = get_sv ("JSON::XS::true", 1); SvREADONLY_on (json_true);	1461	json_true = get_bool ("JSON::XS::true");
1321	#endif	1462	#endif
1322	return SvREFCNT_inc (json_true);	1463	return newSVsv (json_true);
1323	}	1464	}
1324	else	1465	else
1325	ERR ("'true' expected");	1466	ERR ("'true' expected");
1326		1467
1327	break;	1468	break;
…		…
1329	case 'f':	1470	case 'f':
1330	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1471	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1331	{	1472	{
1332	dec->cur += 5;	1473	dec->cur += 5;
1333	#if JSON_SLOW	1474	#if JSON_SLOW
1334	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1475	json_false = get_bool ("JSON::XS::false");
1335	#endif	1476	#endif
1336	return SvREFCNT_inc (json_false);	1477	return newSVsv (json_false);
1337	}	1478	}
1338	else	1479	else
1339	ERR ("'false' expected");	1480	ERR ("'false' expected");
1340		1481
1341	break;	1482	break;
…		…
1359	fail:	1500	fail:
1360	return 0;	1501	return 0;
1361	}	1502	}
1362		1503
1363	static SV *	1504	static SV *
1364	decode_json (SV string, JSON json, UV *offset_return)	1505	decode_json (SV string, JSON json, char **offset_return)
1365	{	1506	{
1366	dec_t dec;	1507	dec_t dec;
1367	UV offset;
1368	SV *sv;	1508	SV *sv;
1369		1509
		1510	/* work around bugs in 5.10 where manipulating magic values
		1511	* will perl ignore the magic in subsequent accesses
		1512	*/
1370	SvGETMAGIC (string);	1513	/SvGETMAGIC (string);/
		1514	if (SvMAGICAL (string))
		1515	string = sv_2mortal (newSVsv (string));
		1516
1371	SvUPGRADE (string, SVt_PV);	1517	SvUPGRADE (string, SVt_PV);
1372		1518
1373	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))	1519	/* work around a bug in perl 5.10, which causes SvCUR to fail an
		1520	* assertion with -DDEBUGGING, although SvCUR is documented to
		1521	* return the xpv_cur field which certainly exists after upgrading.
		1522	* according to nicholas clark, calling SvPOK fixes this.
		1523	* But it doesn't fix it, so try another workaround, call SvPV_nolen
		1524	* and hope for the best.
		1525	* Damnit, SvPV_nolen still trips over yet another assertion. This
		1526	* assertion business is seriously broken, try yet another workaround
		1527	* for the broken -DDEBUGGING.
		1528	*/
		1529	{
		1530	#ifdef DEBUGGING
		1531	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
		1532	#else
		1533	STRLEN offset = SvCUR (string);
		1534	#endif
		1535
		1536	if (offset > json->max_size && json->max_size)
1374	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1537	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1375	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));	1538	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
		1539	}
1376		1540
1377	if (json->flags & F_UTF8)	1541	if (json->flags & F_UTF8)
1378	sv_utf8_downgrade (string, 0);	1542	sv_utf8_downgrade (string, 0);
1379	else	1543	else
1380	sv_utf8_upgrade (string);	1544	sv_utf8_upgrade (string);
1381		1545
1382	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1546	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1383		1547
1384	dec.json = *json;	1548	dec.json = *json;
1385	dec.cur = SvPVX (string);	1549	dec.cur = SvPVX (string);
1386	dec.end = SvEND (string);	1550	dec.end = SvEND (string);
1387	dec.err = 0;	1551	dec.err = 0;
1388	dec.depth = 0;	1552	dec.depth = 0;
1389	dec.maxdepth = DEC_DEPTH (dec.json.flags);
1390		1553
1391	if (dec.json.cb_object \|\| dec.json.cb_sk_object)	1554	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
1392	dec.json.flags \|= F_HOOK;	1555	dec.json.flags \|= F_HOOK;
1393		1556
1394	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1557	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
1395		1558
1396	decode_ws (&dec);	1559	decode_ws (&dec);
1397	sv = decode_sv (&dec);	1560	sv = decode_sv (&dec);
		1561
		1562	if (offset_return)
		1563	*offset_return = dec.cur;
1398		1564
1399	if (!(offset_return \|\| !sv))	1565	if (!(offset_return \|\| !sv))
1400	{	1566	{
1401	// check for trailing garbage	1567	// check for trailing garbage
1402	decode_ws (&dec);	1568	decode_ws (&dec);
…		…
1405	{	1571	{
1406	dec.err = "garbage after JSON object";	1572	dec.err = "garbage after JSON object";
1407	SvREFCNT_dec (sv);	1573	SvREFCNT_dec (sv);
1408	sv = 0;	1574	sv = 0;
1409	}	1575	}
1410	}
1411
1412	if (offset_return \|\| !sv)
1413	{
1414	offset = dec.json.flags & F_UTF8
1415	? dec.cur - SvPVX (string)
1416	: utf8_distance (dec.cur, SvPVX (string));
1417
1418	if (offset_return)
1419	*offset_return = offset;
1420	}	1576	}
1421		1577
1422	if (!sv)	1578	if (!sv)
1423	{	1579	{
1424	SV *uni = sv_newmortal ();	1580	SV *uni = sv_newmortal ();
…		…
1430	SAVEVPTR (PL_curcop);	1586	SAVEVPTR (PL_curcop);
1431	PL_curcop = &cop;	1587	PL_curcop = &cop;
1432	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1588	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1433	LEAVE;	1589	LEAVE;
1434		1590
1435	croak ("%s, at character offset %d [\"%s\"]",	1591	croak ("%s, at character offset %d (before \"%s\")",
1436	dec.err,	1592	dec.err,
1437	(int)offset,	1593	ptr_to_index (string, dec.cur),
1438	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1594	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1439	}	1595	}
1440		1596
1441	sv = sv_2mortal (sv);	1597	sv = sv_2mortal (sv);
1442		1598
1443	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1599	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))
1444	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1600	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1445		1601
1446	return sv;	1602	return sv;
		1603	}
		1604
		1605	/////////////////////////////////////////////////////////////////////////////
		1606	// incremental parser
		1607
		1608	static void
		1609	incr_parse (JSON *self)
		1610	{
		1611	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1612
		1613	// the state machine here is a bit convoluted and could be simplified a lot
		1614	// but this would make it slower, so...
		1615
		1616	for (;;)
		1617	{
		1618	//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
		1619	switch (self->incr_mode)
		1620	{
		1621	// only used for initial whitespace skipping
		1622	case INCR_M_WS:
		1623	for (;;)
		1624	{
		1625	if (*p > 0x20)
		1626	{
		1627	if (*p == '#')
		1628	{
		1629	self->incr_mode = INCR_M_C0;
		1630	goto incr_m_c;
		1631	}
		1632	else
		1633	{
		1634	self->incr_mode = INCR_M_JSON;
		1635	goto incr_m_json;
		1636	}
		1637	}
		1638	else if (!*p)
		1639	goto interrupt;
		1640
		1641	++p;
		1642	}
		1643
		1644	// skip a single char inside a string (for \\-processing)
		1645	case INCR_M_BS:
		1646	if (!*p)
		1647	goto interrupt;
		1648
		1649	++p;
		1650	self->incr_mode = INCR_M_STR;
		1651	goto incr_m_str;
		1652
		1653	// inside #-style comments
		1654	case INCR_M_C0:
		1655	case INCR_M_C1:
		1656	incr_m_c:
		1657	for (;;)
		1658	{
		1659	if (*p == '\n')
		1660	{
		1661	self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON;
		1662	break;
		1663	}
		1664	else if (!*p)
		1665	goto interrupt;
		1666
		1667	++p;
		1668	}
		1669
		1670	break;
		1671
		1672	// inside a string
		1673	case INCR_M_STR:
		1674	incr_m_str:
		1675	for (;;)
		1676	{
		1677	if (*p == '"')
		1678	{
		1679	++p;
		1680	self->incr_mode = INCR_M_JSON;
		1681
		1682	if (!self->incr_nest)
		1683	goto interrupt;
		1684
		1685	goto incr_m_json;
		1686	}
		1687	else if (*p == '\\')
		1688	{
		1689	++p; // "virtually" consumes character after \
		1690
		1691	if (!*p) // if at end of string we have to switch modes
		1692	{
		1693	self->incr_mode = INCR_M_BS;
		1694	goto interrupt;
		1695	}
		1696	}
		1697	else if (!*p)
		1698	goto interrupt;
		1699
		1700	++p;
		1701	}
		1702
		1703	// after initial ws, outside string
		1704	case INCR_M_JSON:
		1705	incr_m_json:
		1706	for (;;)
		1707	{
		1708	switch (*p++)
		1709	{
		1710	case 0:
		1711	--p;
		1712	goto interrupt;
		1713
		1714	case 0x09:
		1715	case 0x0a:
		1716	case 0x0d:
		1717	case 0x20:
		1718	if (!self->incr_nest)
		1719	{
		1720	--p; // do not eat the whitespace, let the next round do it
		1721	goto interrupt;
		1722	}
		1723	break;
		1724
		1725	case '"':
		1726	self->incr_mode = INCR_M_STR;
		1727	goto incr_m_str;
		1728
		1729	case '[':
		1730	case '{':
		1731	if (++self->incr_nest > self->max_depth)
		1732	croak (ERR_NESTING_EXCEEDED);
		1733	break;
		1734
		1735	case ']':
		1736	case '}':
		1737	if (--self->incr_nest <= 0)
		1738	goto interrupt;
		1739	break;
		1740
		1741	case '#':
		1742	self->incr_mode = INCR_M_C1;
		1743	goto incr_m_c;
		1744	}
		1745	}
		1746	}
		1747
		1748	modechange:
		1749	;
		1750	}
		1751
		1752	interrupt:
		1753	self->incr_pos = p - SvPVX (self->incr_text);
		1754	//printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D
		1755	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
1447	}	1756	}
1448		1757
1449	/////////////////////////////////////////////////////////////////////////////	1758	/////////////////////////////////////////////////////////////////////////////
1450	// XS interface functions	1759	// XS interface functions
1451		1760
…		…
1463	: -1;	1772	: -1;
1464		1773
1465	json_stash = gv_stashpv ("JSON::XS" , 1);	1774	json_stash = gv_stashpv ("JSON::XS" , 1);
1466	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	1775	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);
1467		1776
1468	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );	1777	json_true = get_bool ("JSON::XS::true");
1469	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1778	json_false = get_bool ("JSON::XS::false");
		1779
		1780	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1470	}	1781	}
1471		1782
1472	PROTOTYPES: DISABLE	1783	PROTOTYPES: DISABLE
1473		1784
1474	void CLONE (...)	1785	void CLONE (...)
…		…
1479	void new (char *klass)	1790	void new (char *klass)
1480	PPCODE:	1791	PPCODE:
1481	{	1792	{
1482	SV *pv = NEWSV (0, sizeof (JSON));	1793	SV *pv = NEWSV (0, sizeof (JSON));
1483	SvPOK_only (pv);	1794	SvPOK_only (pv);
1484	Zero (SvPVX (pv), 1, JSON);	1795	json_init ((JSON *)SvPVX (pv));
1485	((JSON *)SvPVX (pv))->flags = F_DEFAULT;
1486	XPUSHs (sv_2mortal (sv_bless (	1796	XPUSHs (sv_2mortal (sv_bless (
1487	newRV_noinc (pv),	1797	newRV_noinc (pv),
1488	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	1798	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1489	)));	1799	)));
1490	}	1800	}
…		…
1502	allow_nonref = F_ALLOW_NONREF	1812	allow_nonref = F_ALLOW_NONREF
1503	shrink = F_SHRINK	1813	shrink = F_SHRINK
1504	allow_blessed = F_ALLOW_BLESSED	1814	allow_blessed = F_ALLOW_BLESSED
1505	convert_blessed = F_CONV_BLESSED	1815	convert_blessed = F_CONV_BLESSED
1506	relaxed = F_RELAXED	1816	relaxed = F_RELAXED
		1817	allow_unknown = F_ALLOW_UNKNOWN
1507	PPCODE:	1818	PPCODE:
1508	{	1819	{
1509	if (enable)	1820	if (enable)
1510	self->flags \|= ix;	1821	self->flags \|= ix;
1511	else	1822	else
…		…
1526	get_allow_nonref = F_ALLOW_NONREF	1837	get_allow_nonref = F_ALLOW_NONREF
1527	get_shrink = F_SHRINK	1838	get_shrink = F_SHRINK
1528	get_allow_blessed = F_ALLOW_BLESSED	1839	get_allow_blessed = F_ALLOW_BLESSED
1529	get_convert_blessed = F_CONV_BLESSED	1840	get_convert_blessed = F_CONV_BLESSED
1530	get_relaxed = F_RELAXED	1841	get_relaxed = F_RELAXED
		1842	get_allow_unknown = F_ALLOW_UNKNOWN
1531	PPCODE:	1843	PPCODE:
1532	XPUSHs (boolSV (self->flags & ix));	1844	XPUSHs (boolSV (self->flags & ix));
1533		1845
1534	void max_depth (JSON *self, UV max_depth = 0x80000000UL)	1846	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1535	PPCODE:	1847	PPCODE:
1536	{	1848	self->max_depth = max_depth;
1537	UV log2 = 0;
1538
1539	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1540
1541	while ((1UL << log2) < max_depth)
1542	++log2;
1543
1544	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1545
1546	XPUSHs (ST (0));	1849	XPUSHs (ST (0));
1547	}
1548		1850
1549	U32 get_max_depth (JSON *self)	1851	U32 get_max_depth (JSON *self)
1550	CODE:	1852	CODE:
1551	RETVAL = DEC_DEPTH (self->flags);	1853	RETVAL = self->max_depth;
1552	OUTPUT:	1854	OUTPUT:
1553	RETVAL	1855	RETVAL
1554		1856
1555	void max_size (JSON *self, UV max_size = 0)	1857	void max_size (JSON *self, U32 max_size = 0)
1556	PPCODE:	1858	PPCODE:
1557	{	1859	self->max_size = max_size;
1558	UV log2 = 0;
1559
1560	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
1561	if (max_size == 1) max_size = 2;
1562
1563	while ((1UL << log2) < max_size)
1564	++log2;
1565
1566	self->flags = self->flags & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
1567
1568	XPUSHs (ST (0));	1860	XPUSHs (ST (0));
1569	}
1570		1861
1571	int get_max_size (JSON *self)	1862	int get_max_size (JSON *self)
1572	CODE:	1863	CODE:
1573	RETVAL = DEC_SIZE (self->flags);	1864	RETVAL = self->max_size;
1574	OUTPUT:	1865	OUTPUT:
1575	RETVAL	1866	RETVAL
1576		1867
1577	void filter_json_object (JSON self, SV cb = &PL_sv_undef)	1868	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1578	PPCODE:	1869	PPCODE:
…		…
1614	XPUSHs (decode_json (jsonstr, self, 0));	1905	XPUSHs (decode_json (jsonstr, self, 0));
1615		1906
1616	void decode_prefix (JSON self, SV jsonstr)	1907	void decode_prefix (JSON self, SV jsonstr)
1617	PPCODE:	1908	PPCODE:
1618	{	1909	{
1619	UV offset;	1910	char *offset;
1620	EXTEND (SP, 2);	1911	EXTEND (SP, 2);
1621	PUSHs (decode_json (jsonstr, self, &offset));	1912	PUSHs (decode_json (jsonstr, self, &offset));
1622	PUSHs (sv_2mortal (newSVuv (offset)));	1913	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));
		1914	}
		1915
		1916	void incr_parse (JSON self, SV jsonstr = 0)
		1917	PPCODE:
		1918	{
		1919	if (!self->incr_text)
		1920	self->incr_text = newSVpvn ("", 0);
		1921
		1922	// append data, if any
		1923	if (jsonstr)
		1924	{
		1925	if (SvUTF8 (jsonstr))
		1926	{
		1927	if (!SvUTF8 (self->incr_text))
		1928	{
		1929	/* utf-8-ness differs, need to upgrade */
		1930	sv_utf8_upgrade (self->incr_text);
		1931
		1932	if (self->incr_pos)
		1933	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		1934	- (U8 *)SvPVX (self->incr_text);
		1935	}
		1936	}
		1937	else if (SvUTF8 (self->incr_text))
		1938	sv_utf8_upgrade (jsonstr);
		1939
		1940	{
		1941	STRLEN len;
		1942	const char *str = SvPV (jsonstr, len);
		1943	STRLEN cur = SvCUR (self->incr_text);
		1944
		1945	if (SvLEN (self->incr_text) <= cur + len)
		1946	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
		1947
		1948	Move (str, SvEND (self->incr_text), len, char);
		1949	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
		1950	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
		1951	}
		1952	}
		1953
		1954	if (GIMME_V != G_VOID)
		1955	do
		1956	{
		1957	char *offset;
		1958
		1959	if (!INCR_DONE (self))
		1960	{
		1961	incr_parse (self);
		1962
		1963	if (self->incr_pos > self->max_size && self->max_size)
		1964	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		1965	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
		1966
		1967	if (!INCR_DONE (self))
		1968	break;
		1969	}
		1970
		1971	XPUSHs (decode_json (self->incr_text, self, &offset));
		1972
		1973	self->incr_pos -= offset - SvPVX (self->incr_text);
		1974	self->incr_nest = 0;
		1975	self->incr_mode = 0;
		1976
		1977	sv_chop (self->incr_text, offset);
		1978	}
		1979	while (GIMME_V == G_ARRAY);
		1980	}
		1981
		1982	SV incr_text (JSON self)
		1983	ATTRS: lvalue
		1984	CODE:
		1985	{
		1986	if (self->incr_pos)
		1987	croak ("incr_text can not be called when the incremental parser already started parsing");
		1988
		1989	RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef;
		1990	}
		1991	OUTPUT:
		1992	RETVAL
		1993
		1994	void incr_skip (JSON *self)
		1995	CODE:
		1996	{
		1997	if (self->incr_pos)
		1998	{
		1999	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos);
		2000	self->incr_pos = 0;
		2001	self->incr_nest = 0;
		2002	self->incr_mode = 0;
		2003	}
		2004	}
		2005
		2006	void incr_reset (JSON *self)
		2007	CODE:
		2008	{
		2009	SvREFCNT_dec (self->incr_text);
		2010	self->incr_text = 0;
		2011	self->incr_pos = 0;
		2012	self->incr_nest = 0;
		2013	self->incr_mode = 0;
1623	}	2014	}
1624		2015
1625	void DESTROY (JSON *self)	2016	void DESTROY (JSON *self)
1626	CODE:	2017	CODE:
1627	SvREFCNT_dec (self->cb_sk_object);	2018	SvREFCNT_dec (self->cb_sk_object);
1628	SvREFCNT_dec (self->cb_object);	2019	SvREFCNT_dec (self->cb_object);
		2020	SvREFCNT_dec (self->incr_text);
1629		2021
1630	PROTOTYPES: ENABLE	2022	PROTOTYPES: ENABLE
1631		2023
1632	void encode_json (SV *scalar)	2024	void encode_json (SV *scalar)
		2025	ALIAS:
		2026	to_json_ = 0
		2027	encode_json = F_UTF8
1633	PPCODE:	2028	PPCODE:
1634	{	2029	{
1635	JSON json = { F_DEFAULT \| F_UTF8 };	2030	JSON json;
		2031	json_init (&json);
		2032	json.flags \|= ix;
1636	XPUSHs (encode_json (scalar, &json));	2033	XPUSHs (encode_json (scalar, &json));
1637	}	2034	}
1638		2035
1639	void decode_json (SV *jsonstr)	2036	void decode_json (SV *jsonstr)
		2037	ALIAS:
		2038	from_json_ = 0
		2039	decode_json = F_UTF8
1640	PPCODE:	2040	PPCODE:
1641	{	2041	{
1642	JSON json = { F_DEFAULT \| F_UTF8 };	2042	JSON json;
		2043	json_init (&json);
		2044	json.flags \|= ix;
1643	XPUSHs (decode_json (jsonstr, &json, 0));	2045	XPUSHs (decode_json (jsonstr, &json, 0));
1644	}	2046	}
1645		2047

Diff Legend

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+Removed lines
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+Added lines
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+Changed lines
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+Changed lines

Comparing JSON-XS/XS.xs (file contents): Revision 1.72 by root, Wed Mar 19 04:08:22 2008 UTC vs. Revision 1.104 by root, Tue Jan 19 00:31:13 2010 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.72 by root, Wed Mar 19 04:08:22 2008 UTC vs.
Revision 1.104 by root, Tue Jan 19 00:31:13 2010 UTC