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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.74 by root, Wed Mar 19 15:17:53 2008 UTC vs.
Revision 1.129 by root, Wed Nov 16 18:06:34 2016 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	// compatibility with perl <5.18
		23	#ifndef HvNAMELEN_get
		24	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		25	#endif
		26	#ifndef HvNAMELEN
		27	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		28	#endif
		29	#ifndef HvNAMEUTF8
		30	# define HvNAMEUTF8(hv) 0
		31	#endif
		32
		33	// three extra for rounding, sign, and end of string
		34	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)
20		35
21	#define F_ASCII 0x00000001UL	36	#define F_ASCII 0x00000001UL
22	#define F_LATIN1 0x00000002UL	37	#define F_LATIN1 0x00000002UL
23	#define F_UTF8 0x00000004UL	38	#define F_UTF8 0x00000004UL
24	#define F_INDENT 0x00000008UL	39	#define F_INDENT 0x00000008UL
…		…
28	#define F_ALLOW_NONREF 0x00000100UL	43	#define F_ALLOW_NONREF 0x00000100UL
29	#define F_SHRINK 0x00000200UL	44	#define F_SHRINK 0x00000200UL
30	#define F_ALLOW_BLESSED 0x00000400UL	45	#define F_ALLOW_BLESSED 0x00000400UL
31	#define F_CONV_BLESSED 0x00000800UL	46	#define F_CONV_BLESSED 0x00000800UL
32	#define F_RELAXED 0x00001000UL	47	#define F_RELAXED 0x00001000UL
33		48	#define F_ALLOW_UNKNOWN 0x00002000UL
34	#define F_MAXDEPTH 0xf8000000UL	49	#define F_ALLOW_TAGS 0x00004000UL
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	50	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
39		51
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	52	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
44	#define F_DEFAULT (9UL << S_MAXDEPTH)
45		53
46	#define INIT_SIZE 32 // initial scalar size to be allocated	54	#define INIT_SIZE 32 // initial scalar size to be allocated
47	#define INDENT_STEP 3 // spaces per indentation level	55	#define INDENT_STEP 3 // spaces per indentation level
48		56
49	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size	57	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
		58
		59	#define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8)
50		60
51	#define SB do {	61	#define SB do {
52	#define SE } while (0)	62	#define SE } while (0)
53		63
54	#if __GNUC__ >= 3	64	#if __GNUC__ >= 3
…		…
64		74
65	#define IN_RANGE_INC(type,val,beg,end) \	75	#define IN_RANGE_INC(type,val,beg,end) \
66	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	76	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
67	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	77	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
68		78
		79	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"
		80
69	#ifdef USE_ITHREADS	81	#ifdef USE_ITHREADS
70	# define JSON_SLOW 1	82	# define JSON_SLOW 1
71	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))	83	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))
		84	# define BOOL_STASH (bool_stash ? bool_stash : gv_stashpv ("Types::Serialiser::Boolean", 1))
72	#else	85	#else
73	# define JSON_SLOW 0	86	# define JSON_SLOW 0
74	# define JSON_STASH json_stash	87	# define JSON_STASH json_stash
		88	# define BOOL_STASH bool_stash
75	#endif	89	#endif
76		90
77	static HV json_stash, json_boolean_stash; // JSON::XS::	91	// the amount of HEs to allocate on the stack, when sorting keys
78	static SV json_true, json_false;	92	#define STACK_HES 64
		93
		94	static HV json_stash, bool_stash; // JSON::XS::, Types::Serialiser::Boolean::
		95	static SV bool_true, bool_false, *sv_json;
		96
		97	enum {
		98	INCR_M_WS = 0, // initial whitespace skipping, must be 0
		99	INCR_M_STR, // inside string
		100	INCR_M_BS, // inside backslash
		101	INCR_M_C0, // inside comment in initial whitespace sequence
		102	INCR_M_C1, // inside comment in other places
		103	INCR_M_JSON // outside anything, count nesting
		104	};
		105
		106	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)
79		107
80	typedef struct {	108	typedef struct {
81	U32 flags;	109	U32 flags;
		110	U32 max_depth;
		111	STRLEN max_size;
		112
82	SV *cb_object;	113	SV *cb_object;
83	HV *cb_sk_object;	114	HV *cb_sk_object;
		115
		116	// for the incremental parser
		117	SV *incr_text; // the source text so far
		118	STRLEN incr_pos; // the current offset into the text
		119	int incr_nest; // {[]}-nesting level
		120	unsigned char incr_mode;
84	} JSON;	121	} JSON;
		122
		123	INLINE void
		124	json_init (JSON *json)
		125	{
		126	Zero (json, 1, JSON);
		127	json->max_depth = 512;
		128	}
85		129
86	/////////////////////////////////////////////////////////////////////////////	130	/////////////////////////////////////////////////////////////////////////////
87	// utility functions	131	// utility functions
88		132
		133	INLINE SV *
		134	get_bool (const char *name)
		135	{
		136	SV *sv = get_sv (name, 1);
		137
		138	SvREADONLY_on (sv);
		139	SvREADONLY_on (SvRV (sv));
		140
		141	return sv;
		142	}
		143
89	INLINE void	144	INLINE void
90	shrink (SV *sv)	145	shrink (SV *sv)
91	{	146	{
92	sv_utf8_downgrade (sv, 1);	147	sv_utf8_downgrade (sv, 1);
		148
93	if (SvLEN (sv) > SvCUR (sv) + 1)	149	if (SvLEN (sv) > SvCUR (sv) + 1)
94	{	150	{
95	#ifdef SvPV_shrink_to_cur	151	#ifdef SvPV_shrink_to_cur
96	SvPV_shrink_to_cur (sv);	152	SvPV_shrink_to_cur (sv);
97	#elif defined (SvPV_renew)	153	#elif defined (SvPV_renew)
…		…
141	*s++ = 0x80 \| ( ch & 0x3f);	197	*s++ = 0x80 \| ( ch & 0x3f);
142		198
143	return s;	199	return s;
144	}	200	}
145		201
		202	// convert offset pointer to character index, sv must be string
		203	static STRLEN
		204	ptr_to_index (SV sv, char offset)
		205	{
		206	return SvUTF8 (sv)
		207	? utf8_distance (offset, SvPVX (sv))
		208	: offset - SvPVX (sv);
		209	}
		210
		211	/////////////////////////////////////////////////////////////////////////////
		212	// fp hell
		213
		214	// scan a group of digits, and a trailing exponent
		215	static void
		216	json_atof_scan1 (const char s, NV accum, int *expo, int postdp, int maxdepth)
		217	{
		218	UV uaccum = 0;
		219	int eaccum = 0;
		220
		221	// if we recurse too deep, skip all remaining digits
		222	// to avoid a stack overflow attack
		223	if (expect_false (--maxdepth <= 0))
		224	while (((U8)*s - '0') < 10)
		225	++s;
		226
		227	for (;;)
		228	{
		229	U8 dig = (U8)*s - '0';
		230
		231	if (expect_false (dig >= 10))
		232	{
		233	if (dig == (U8)((U8)'.' - (U8)'0'))
		234	{
		235	++s;
		236	json_atof_scan1 (s, accum, expo, 1, maxdepth);
		237	}
		238	else if ((dig \| ' ') == 'e' - '0')
		239	{
		240	int exp2 = 0;
		241	int neg = 0;
		242
		243	++s;
		244
		245	if (*s == '-')
		246	{
		247	++s;
		248	neg = 1;
		249	}
		250	else if (*s == '+')
		251	++s;
		252
		253	while ((dig = (U8)*s - '0') < 10)
		254	exp2 = exp2 * 10 + *s++ - '0';
		255
		256	*expo += neg ? -exp2 : exp2;
		257	}
		258
		259	break;
		260	}
		261
		262	++s;
		263
		264	uaccum = uaccum * 10 + dig;
		265	++eaccum;
		266
		267	// if we have too many digits, then recurse for more
		268	// we actually do this for rather few digits
		269	if (uaccum >= (UV_MAX - 9) / 10)
		270	{
		271	if (postdp) *expo -= eaccum;
		272	json_atof_scan1 (s, accum, expo, postdp, maxdepth);
		273	if (postdp) *expo += eaccum;
		274
		275	break;
		276	}
		277	}
		278
		279	// this relies greatly on the quality of the pow ()
		280	// implementation of the platform, but a good
		281	// implementation is hard to beat.
		282	// (IEEE 754 conformant ones are required to be exact)
		283	if (postdp) *expo -= eaccum;
		284	accum += uaccum Perl_pow (10., *expo);
		285	*expo += eaccum;
		286	}
		287
		288	static NV
		289	json_atof (const char *s)
		290	{
		291	NV accum = 0.;
		292	int expo = 0;
		293	int neg = 0;
		294
		295	if (*s == '-')
		296	{
		297	++s;
		298	neg = 1;
		299	}
		300
		301	// a recursion depth of ten gives us >>500 bits
		302	json_atof_scan1 (s, &accum, &expo, 0, 10);
		303
		304	return neg ? -accum : accum;
		305	}
		306
		307	// target of scalar reference is bool? -1 == nope, 0 == false, 1 == true
		308	static int
		309	ref_bool_type (SV *sv)
		310	{
		311	svtype svt = SvTYPE (sv);
		312
		313	if (svt < SVt_PVAV)
		314	{
		315	STRLEN len = 0;
		316	char *pv = svt ? SvPV (sv, len) : 0;
		317
		318	if (len == 1)
		319	if (*pv == '1')
		320	return 1;
		321	else if (*pv == '0')
		322	return 0;
		323	}
		324
		325	return -1;
		326	}
		327
		328	// returns whether scalar is not a reference in the sense of allow_nonref
		329	static int
		330	json_nonref (SV *scalar)
		331	{
		332	if (!SvROK (scalar))
		333	return 1;
		334
		335	scalar = SvRV (scalar);
		336
		337	if (SvTYPE (scalar) >= SVt_PVMG)
		338	{
		339	if (SvSTASH (scalar) == bool_stash)
		340	return 1;
		341
		342	if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0)
		343	return 1;
		344	}
		345
		346	return 0;
		347	}
		348
146	/////////////////////////////////////////////////////////////////////////////	349	/////////////////////////////////////////////////////////////////////////////
147	// encoder	350	// encoder
148		351
149	// structure used for encoding JSON	352	// structure used for encoding JSON
150	typedef struct	353	typedef struct
…		…
152	char *cur; // SvPVX (sv) + current output position	355	char *cur; // SvPVX (sv) + current output position
153	char *end; // SvEND (sv)	356	char *end; // SvEND (sv)
154	SV *sv; // result scalar	357	SV *sv; // result scalar
155	JSON json;	358	JSON json;
156	U32 indent; // indentation level	359	U32 indent; // indentation level
157	U32 maxdepth; // max. indentation/recursion level
158	UV limit; // escape character values >= this value when encoding	360	UV limit; // escape character values >= this value when encoding
159	} enc_t;	361	} enc_t;
160		362
161	INLINE void	363	INLINE void
162	need (enc_t *enc, STRLEN len)	364	need (enc_t *enc, STRLEN len)
163	{	365	{
164	if (expect_false (enc->cur + len >= enc->end))	366	if (expect_false (enc->cur + len >= enc->end))
165	{	367	{
166	STRLEN cur = enc->cur - SvPVX (enc->sv);	368	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
167	SvGROW (enc->sv, cur + len + 1);	369	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
168	enc->cur = SvPVX (enc->sv) + cur;	370	enc->cur = SvPVX (enc->sv) + cur;
169	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	371	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
170	}	372	}
171	}	373	}
172		374
…		…
247	(int)((uch - 0x10000) % 0x400 + 0xDC00));	449	(int)((uch - 0x10000) % 0x400 + 0xDC00));
248	enc->cur += 12;	450	enc->cur += 12;
249	}	451	}
250	else	452	else
251	{	453	{
252	static char hexdigit [16] = "0123456789abcdef";
253	need (enc, len += 5);	454	need (enc, len += 5);
254	*enc->cur++ = '\\';	455	*enc->cur++ = '\\';
255	*enc->cur++ = 'u';	456	*enc->cur++ = 'u';
256	*enc->cur++ = hexdigit [ uch >> 12 ];	457	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
257	*enc->cur++ = hexdigit [(uch >> 8) & 15];	458	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
258	*enc->cur++ = hexdigit [(uch >> 4) & 15];	459	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
259	*enc->cur++ = hexdigit [(uch >> 0) & 15];	460	*enc->cur++ = PL_hexdigit [(uch >> 0) & 15];
260	}	461	}
261		462
262	str += clen;	463	str += clen;
263	}	464	}
264	else if (enc->json.flags & F_LATIN1)	465	else if (enc->json.flags & F_LATIN1)
…		…
335	static void	536	static void
336	encode_av (enc_t enc, AV av)	537	encode_av (enc_t enc, AV av)
337	{	538	{
338	int i, len = av_len (av);	539	int i, len = av_len (av);
339		540
340	if (enc->indent >= enc->maxdepth)	541	if (enc->indent >= enc->json.max_depth)
341	croak ("data structure too deep (hit recursion limit)");	542	croak (ERR_NESTING_EXCEEDED);
342		543
343	encode_ch (enc, '[');	544	encode_ch (enc, '[');
344		545
345	if (len >= 0)	546	if (len >= 0)
346	{	547	{
347	encode_nl (enc); ++enc->indent;	548	encode_nl (enc); ++enc->indent;
348		549
349	for (i = 0; i <= len; ++i)	550	for (i = 0; i <= len; ++i)
…		…
361	encode_comma (enc);	562	encode_comma (enc);
362	}	563	}
363		564
364	encode_nl (enc); --enc->indent; encode_indent (enc);	565	encode_nl (enc); --enc->indent; encode_indent (enc);
365	}	566	}
366		567
367	encode_ch (enc, ']');	568	encode_ch (enc, ']');
368	}	569	}
369		570
370	static void	571	static void
371	encode_hk (enc_t enc, HE he)	572	encode_hk (enc_t enc, HE he)
…		…
375	if (HeKLEN (he) == HEf_SVKEY)	576	if (HeKLEN (he) == HEf_SVKEY)
376	{	577	{
377	SV *sv = HeSVKEY (he);	578	SV *sv = HeSVKEY (he);
378	STRLEN len;	579	STRLEN len;
379	char *str;	580	char *str;
380		581
381	SvGETMAGIC (sv);	582	SvGETMAGIC (sv);
382	str = SvPV (sv, len);	583	str = SvPV (sv, len);
383		584
384	encode_str (enc, str, len, SvUTF8 (sv));	585	encode_str (enc, str, len, SvUTF8 (sv));
385	}	586	}
…		…
420		621
421	static void	622	static void
422	encode_hv (enc_t enc, HV hv)	623	encode_hv (enc_t enc, HV hv)
423	{	624	{
424	HE *he;	625	HE *he;
425	int count;
426		626
427	if (enc->indent >= enc->maxdepth)	627	if (enc->indent >= enc->json.max_depth)
428	croak ("data structure too deep (hit recursion limit)");	628	croak (ERR_NESTING_EXCEEDED);
429		629
430	encode_ch (enc, '{');	630	encode_ch (enc, '{');
431		631
432	// for canonical output we have to sort by keys first	632	// for canonical output we have to sort by keys first
433	// actually, this is mostly due to the stupid so-called	633	// actually, this is mostly due to the stupid so-called
434	// security workaround added somewhere in 5.8.x.	634	// security workaround added somewhere in 5.8.x
435	// that randomises hash orderings	635	// that randomises hash orderings
436	if (enc->json.flags & F_CANONICAL)	636	if (enc->json.flags & F_CANONICAL && !SvRMAGICAL (hv))
437	{	637	{
438	int count = hv_iterinit (hv);	638	int count = hv_iterinit (hv);
439		639
440	if (SvMAGICAL (hv))	640	if (SvMAGICAL (hv))
441	{	641	{
…		…
452	}	652	}
453		653
454	if (count)	654	if (count)
455	{	655	{
456	int i, fast = 1;	656	int i, fast = 1;
457	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	657	HE *hes_stack [STACK_HES];
458	HE *hes = _alloca (count sizeof (HE));	658	HE **hes = hes_stack;
459	#else	659
460	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	660	// allocate larger arrays on the heap
461	#endif	661	if (count > STACK_HES)
		662	{
		663	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		664	hes = (HE **)SvPVX (sv);
		665	}
462		666
463	i = 0;	667	i = 0;
464	while ((he = hv_iternext (hv)))	668	while ((he = hv_iternext (hv)))
465	{	669	{
466	hes [i++] = he;	670	hes [i++] = he;
…		…
535	// encode objects, arrays and special \0=false and \1=true values.	739	// encode objects, arrays and special \0=false and \1=true values.
536	static void	740	static void
537	encode_rv (enc_t enc, SV sv)	741	encode_rv (enc_t enc, SV sv)
538	{	742	{
539	svtype svt;	743	svtype svt;
		744	GV *method;
540		745
541	SvGETMAGIC (sv);	746	SvGETMAGIC (sv);
542	svt = SvTYPE (sv);	747	svt = SvTYPE (sv);
543		748
544	if (expect_false (SvOBJECT (sv)))	749	if (expect_false (SvOBJECT (sv)))
545	{	750	{
546	HV *stash = !JSON_SLOW \|\| json_boolean_stash	751	HV *stash = SvSTASH (sv);
547	? json_boolean_stash
548	: gv_stashpv ("JSON::XS::Boolean", 1);
549		752
550	if (SvSTASH (sv) == stash)	753	if (stash == bool_stash)
551	{	754	{
552	if (SvIV (sv))	755	if (SvIV (sv))
553	encode_str (enc, "true", 4, 0);	756	encode_str (enc, "true", 4, 0);
554	else	757	else
555	encode_str (enc, "false", 5, 0);	758	encode_str (enc, "false", 5, 0);
556	}	759	}
		760	else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
		761	{
		762	int count;
		763	dSP;
		764
		765	ENTER; SAVETMPS;
		766	SAVESTACK_POS ();
		767	PUSHMARK (SP);
		768	EXTEND (SP, 2);
		769	// we re-bless the reference to get overload and other niceties right
		770	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		771	PUSHs (sv_json);
		772
		773	PUTBACK;
		774	count = call_sv ((SV *)GvCV (method), G_ARRAY);
		775	SPAGAIN;
		776
		777	// catch this surprisingly common error
		778	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		779	croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		780
		781	encode_ch (enc, '(');
		782	encode_ch (enc, '"');
		783	encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
		784	encode_ch (enc, '"');
		785	encode_ch (enc, ')');
		786	encode_ch (enc, '[');
		787
		788	while (count)
		789	{
		790	encode_sv (enc, SP[1 - count--]);
		791
		792	if (count)
		793	encode_ch (enc, ',');
		794	}
		795
		796	encode_ch (enc, ']');
		797
		798	FREETMPS; LEAVE;
		799	}
		800	else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
		801	{
		802	dSP;
		803
		804	ENTER; SAVETMPS;
		805	PUSHMARK (SP);
		806	// we re-bless the reference to get overload and other niceties right
		807	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		808
		809	// calling with G_SCALAR ensures that we always get a 1 return value
		810	PUTBACK;
		811	call_sv ((SV *)GvCV (method), G_SCALAR);
		812	SPAGAIN;
		813
		814	// catch this surprisingly common error
		815	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		816	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		817
		818	sv = POPs;
		819	PUTBACK;
		820
		821	encode_sv (enc, sv);
		822
		823	FREETMPS; LEAVE;
		824	}
		825	else if (enc->json.flags & F_ALLOW_BLESSED)
		826	encode_str (enc, "null", 4, 0);
557	else	827	else
558	{
559	#if 0
560	if (0 && sv_derived_from (rv, "JSON::Literal"))
561	{
562	// not yet
563	}
564	#endif
565	if (enc->json.flags & F_CONV_BLESSED)
566	{
567	// we re-bless the reference to get overload and other niceties right
568	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
569
570	if (to_json)
571	{
572	dSP;
573
574	ENTER; SAVETMPS; PUSHMARK (SP);
575	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
576
577	// calling with G_SCALAR ensures that we always get a 1 return value
578	PUTBACK;
579	call_sv ((SV *)GvCV (to_json), G_SCALAR);
580	SPAGAIN;
581
582	// catch this surprisingly common error
583	if (SvROK (TOPs) && SvRV (TOPs) == sv)
584	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
585
586	sv = POPs;
587	PUTBACK;
588
589	encode_sv (enc, sv);
590
591	FREETMPS; LEAVE;
592	}
593	else if (enc->json.flags & F_ALLOW_BLESSED)
594	encode_str (enc, "null", 4, 0);
595	else
596	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
597	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
598	}
599	else if (enc->json.flags & F_ALLOW_BLESSED)
600	encode_str (enc, "null", 4, 0);
601	else
602	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	828	croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
603	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	829	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
604	}
605	}	830	}
606	else if (svt == SVt_PVHV)	831	else if (svt == SVt_PVHV)
607	encode_hv (enc, (HV *)sv);	832	encode_hv (enc, (HV *)sv);
608	else if (svt == SVt_PVAV)	833	else if (svt == SVt_PVAV)
609	encode_av (enc, (AV *)sv);	834	encode_av (enc, (AV *)sv);
610	else if (svt < SVt_PVAV)	835	else if (svt < SVt_PVAV)
611	{	836	{
612	STRLEN len = 0;	837	int bool_type = ref_bool_type (sv);
613	char *pv = svt ? SvPV (sv, len) : 0;
614		838
615	if (len == 1 && *pv == '1')	839	if (bool_type == 1)
616	encode_str (enc, "true", 4, 0);	840	encode_str (enc, "true", 4, 0);
617	else if (len == 1 && *pv == '0')	841	else if (bool_type == 0)
618	encode_str (enc, "false", 5, 0);	842	encode_str (enc, "false", 5, 0);
		843	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		844	encode_str (enc, "null", 4, 0);
619	else	845	else
620	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	846	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
621	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	847	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
622	}	848	}
		849	else if (enc->json.flags & F_ALLOW_UNKNOWN)
		850	encode_str (enc, "null", 4, 0);
623	else	851	else
624	croak ("encountered %s, but JSON can only represent references to arrays or hashes",	852	croak ("encountered %s, but JSON can only represent references to arrays or hashes",
625	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	853	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
626	}	854	}
627		855
…		…
648	else if (SvIOKp (sv))	876	else if (SvIOKp (sv))
649	{	877	{
650	// we assume we can always read an IV as a UV and vice versa	878	// we assume we can always read an IV as a UV and vice versa
651	// we assume two's complement	879	// we assume two's complement
652	// we assume no aliasing issues in the union	880	// we assume no aliasing issues in the union
653	if (SvIsUV (sv) ? SvUVX (sv) > 59000	881	if (SvIsUV (sv) ? SvUVX (sv) <= 59000
654	: SvIVX (sv) > 59000 \|\| SvIVX (sv) < -59000)	882	: SvIVX (sv) <= 59000 && SvIVX (sv) >= -59000)
655	{
656	// large integer, use the (rather slow) snprintf way.
657	need (enc, sizeof (UV) * 5 / 2 + 1); // CHAR_BIT is at least 8
658	enc->cur +=
659	SvIsUV(sv)
660	? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv))
661	: snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv));
662	}
663	else
664	{	883	{
665	// optimise the "small number case"	884	// optimise the "small number case"
666	// code will likely be branchless and use only a single multiplication	885	// code will likely be branchless and use only a single multiplication
667	// works for numbers up to 59074	886	// works for numbers up to 59074
668	I32 i = SvIVX (sv);	887	I32 i = SvIVX (sv);
…		…
679		898
680	// now output digit by digit, each time masking out the integer part	899	// now output digit by digit, each time masking out the integer part
681	// and multiplying by 5 while moving the decimal point one to the right,	900	// and multiplying by 5 while moving the decimal point one to the right,
682	// resulting in a net multiplication by 10.	901	// resulting in a net multiplication by 10.
683	// we always write the digit to memory but conditionally increment	902	// we always write the digit to memory but conditionally increment
684	// the pointer, to ease the usage of conditional move instructions.	903	// the pointer, to enable the use of conditional move instructions.
685	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffff) 5;	904	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffffUL) 5;
686	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffff) 5;	905	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffffUL) 5;
687	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffff) 5;	906	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffffUL) 5;
688	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffff) 5;	907	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffffUL) 5;
689	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'	908	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'
690	}	909	}
		910	else
		911	{
		912	// large integer, use the (rather slow) snprintf way.
		913	need (enc, IVUV_MAXCHARS);
		914	enc->cur +=
		915	SvIsUV(sv)
		916	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
		917	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
		918	}
691	}	919	}
692	else if (SvROK (sv))	920	else if (SvROK (sv))
693	encode_rv (enc, SvRV (sv));	921	encode_rv (enc, SvRV (sv));
694	else if (!SvOK (sv))	922	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
695	encode_str (enc, "null", 4, 0);	923	encode_str (enc, "null", 4, 0);
696	else	924	else
697	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	925	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
698	SvPV_nolen (sv), SvFLAGS (sv));	926	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
699	}	927	}
700		928
701	static SV *	929	static SV *
702	encode_json (SV scalar, JSON json)	930	encode_json (SV scalar, JSON json)
703	{	931	{
704	enc_t enc;	932	enc_t enc;
705		933
706	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	934	if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
707	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	935	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
708		936
709	enc.json = *json;	937	enc.json = *json;
710	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	938	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
711	enc.cur = SvPVX (enc.sv);	939	enc.cur = SvPVX (enc.sv);
712	enc.end = SvEND (enc.sv);	940	enc.end = SvEND (enc.sv);
713	enc.indent = 0;	941	enc.indent = 0;
714	enc.maxdepth = DEC_DEPTH (enc.json.flags);
715	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL	942	enc.limit = enc.json.flags & F_ASCII ? 0x000080UL
716	: enc.json.flags & F_LATIN1 ? 0x000100UL	943	: enc.json.flags & F_LATIN1 ? 0x000100UL
717	: 0x110000UL;	944	: 0x110000UL;
718		945
719	SvPOK_only (enc.sv);	946	SvPOK_only (enc.sv);
720	encode_sv (&enc, scalar);	947	encode_sv (&enc, scalar);
		948	encode_nl (&enc);
721		949
722	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	950	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
723	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	951	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
724		952
725	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))	953	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
…		…
786	if (*dec->cur != ch) \	1014	if (*dec->cur != ch) \
787	ERR (# ch " expected"); \	1015	ERR (# ch " expected"); \
788	++dec->cur; \	1016	++dec->cur; \
789	SE	1017	SE
790		1018
791	#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")	1019	#define DEC_INC_DEPTH if (++dec->depth > dec->json.max_depth) ERR (ERR_NESTING_EXCEEDED)
792	#define DEC_DEC_DEPTH --dec->depth	1020	#define DEC_DEC_DEPTH --dec->depth
793		1021
794	static SV decode_sv (dec_t dec);	1022	static SV decode_sv (dec_t dec);
795		1023
796	static signed char decode_hexdigit[256];	1024	static signed char decode_hexdigit[256];
…		…
905	else if (expect_true (ch >= 0x20 && ch < 0x80))	1133	else if (expect_true (ch >= 0x20 && ch < 0x80))
906	*cur++ = ch;	1134	*cur++ = ch;
907	else if (ch >= 0x80)	1135	else if (ch >= 0x80)
908	{	1136	{
909	STRLEN clen;	1137	STRLEN clen;
910	UV uch;
911		1138
912	--dec_cur;	1139	--dec_cur;
913		1140
914	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);	1141	decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
915	if (clen == (STRLEN)-1)	1142	if (clen == (STRLEN)-1)
916	ERR ("malformed UTF-8 character in JSON string");	1143	ERR ("malformed UTF-8 character in JSON string");
917		1144
918	do	1145	do
919	cur++ = dec_cur++;	1146	cur++ = dec_cur++;
920	while (--clen);	1147	while (--clen);
921		1148
922	utf8 = 1;	1149	utf8 = 1;
923	}	1150	}
		1151	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1152	*cur++ = ch;
924	else	1153	else
925	{	1154	{
926	--dec_cur;	1155	--dec_cur;
927		1156
928	if (!ch)	1157	if (!ch)
…		…
936	{	1165	{
937	STRLEN len = cur - buf;	1166	STRLEN len = cur - buf;
938		1167
939	if (sv)	1168	if (sv)
940	{	1169	{
941	SvGROW (sv, SvCUR (sv) + len + 1);	1170	STRLEN cur = SvCUR (sv);
		1171
		1172	if (SvLEN (sv) <= cur + len)
		1173	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
		1174
942	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1175	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
943	SvCUR_set (sv, SvCUR (sv) + len);	1176	SvCUR_set (sv, SvCUR (sv) + len);
944	}	1177	}
945	else	1178	else
946	sv = newSVpvn (buf, len);	1179	sv = newSVpvn (buf, len);
…		…
1037		1270
1038	// special case the rather common 1..5-digit-int case	1271	// special case the rather common 1..5-digit-int case
1039	if (*start == '-')	1272	if (*start == '-')
1040	switch (len)	1273	switch (len)
1041	{	1274	{
1042	case 2: return newSViv (-( start [1] - '0' * 1));	1275	case 2: return newSViv (-(IV)( start [1] - '0' * 1));
1043	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));	1276	case 3: return newSViv (-(IV)( start [1] * 10 + start [2] - '0' * 11));
1044	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));	1277	case 4: return newSViv (-(IV)( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
1045	case 5: return newSViv (-( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));	1278	case 5: return newSViv (-(IV)( start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
1046	case 6: return newSViv (-(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));	1279	case 6: return newSViv (-(IV)(start [1] * 10000 + start [2] * 1000 + start [3] * 100 + start [4] * 10 + start [5] - '0' * 11111));
1047	}	1280	}
1048	else	1281	else
1049	switch (len)	1282	switch (len)
1050	{	1283	{
1051	case 1: return newSViv ( start [0] - '0' * 1);	1284	case 1: return newSViv ( start [0] - '0' * 1);
1052	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);	1285	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
1053	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);	1286	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
1054	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);	1287	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
1055	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);	1288	case 5: return newSViv ( start [0] * 10000 + start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 11111);
1056	}	1289	}
1057		1290
1058	{	1291	{
1059	UV uv;	1292	UV uv;
1060	int numtype = grok_number (start, len, &uv);	1293	int numtype = grok_number (start, len, &uv);
…		…
1069	}	1302	}
1070		1303
1071	len -= *start == '-' ? 1 : 0;	1304	len -= *start == '-' ? 1 : 0;
1072		1305
1073	// does not fit into IV or UV, try NV	1306	// does not fit into IV or UV, try NV
1074	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1307	if (len <= NV_DIG)
1075	#if defined (LDBL_DIG)
1076	\|\| (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
1077	#endif
1078	)
1079	// fits into NV without loss of precision	1308	// fits into NV without loss of precision
1080	return newSVnv (Atof (start));	1309	return newSVnv (json_atof (start));
1081		1310
1082	// everything else fails, convert it to a string	1311	// everything else fails, convert it to a string
1083	return newSVpvn (start, dec->cur - start);	1312	return newSVpvn (start, dec->cur - start);
1084	}	1313	}
1085		1314
1086	// loss of precision here	1315	// loss of precision here
1087	return newSVnv (Atof (start));	1316	return newSVnv (json_atof (start));
1088		1317
1089	fail:	1318	fail:
1090	return 0;	1319	return 0;
1091	}	1320	}
1092		1321
…		…
1116	if (*dec->cur == ']')	1345	if (*dec->cur == ']')
1117	{	1346	{
1118	++dec->cur;	1347	++dec->cur;
1119	break;	1348	break;
1120	}	1349	}
1121		1350
1122	if (*dec->cur != ',')	1351	if (*dec->cur != ',')
1123	ERR (", or ] expected while parsing array");	1352	ERR (", or ] expected while parsing array");
1124		1353
1125	++dec->cur;	1354	++dec->cur;
1126		1355
…		…
1168	char *p = dec->cur;	1397	char *p = dec->cur;
1169	char *e = p + 24; // only try up to 24 bytes	1398	char *e = p + 24; // only try up to 24 bytes
1170		1399
1171	for (;;)	1400	for (;;)
1172	{	1401	{
1173	// the >= 0x80 is true on most architectures	1402	// the >= 0x80 is false on most architectures
1174	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')	1403	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')
1175	{	1404	{
1176	// slow path, back up and use decode_str	1405	// slow path, back up and use decode_str
1177	SV *key = decode_str (dec);	1406	SV *key = decode_str (dec);
1178	if (!key)	1407	if (!key)
…		…
1250		1479
1251	hv_iterinit (hv);	1480	hv_iterinit (hv);
1252	he = hv_iternext (hv);	1481	he = hv_iternext (hv);
1253	hv_iterinit (hv);	1482	hv_iterinit (hv);
1254		1483
1255	// the next line creates a mortal sv each time its called.	1484	// the next line creates a mortal sv each time it's called.
1256	// might want to optimise this for common cases.	1485	// might want to optimise this for common cases.
1257	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);	1486	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1258		1487
1259	if (cb)	1488	if (cb)
1260	{	1489	{
1261	dSP;	1490	dSP;
1262	int count;	1491	int count;
1263		1492
1264	ENTER; SAVETMPS; PUSHMARK (SP);	1493	ENTER; SAVETMPS;
		1494	SAVESTACK_POS ();
		1495	PUSHMARK (SP);
1265	XPUSHs (HeVAL (he));	1496	XPUSHs (HeVAL (he));
		1497	sv_2mortal (sv);
1266		1498
1267	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1499	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1268		1500
1269	if (count == 1)	1501	if (count == 1)
1270	{	1502	{
1271	sv = newSVsv (POPs);	1503	sv = newSVsv (POPs);
1272	FREETMPS; LEAVE;	1504	FREETMPS; LEAVE;
1273	return sv;	1505	return sv;
1274	}	1506	}
1275		1507
		1508	SvREFCNT_inc (sv);
1276	FREETMPS; LEAVE;	1509	FREETMPS; LEAVE;
1277	}	1510	}
1278	}	1511	}
1279		1512
1280	if (dec->json.cb_object)	1513	if (dec->json.cb_object)
1281	{	1514	{
1282	dSP;	1515	dSP;
1283	int count;	1516	int count;
1284		1517
1285	ENTER; SAVETMPS; PUSHMARK (SP);	1518	ENTER; SAVETMPS;
		1519	SAVESTACK_POS ();
		1520	PUSHMARK (SP);
1286	XPUSHs (sv_2mortal (sv));	1521	XPUSHs (sv_2mortal (sv));
1287		1522
1288	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1523	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1289		1524
1290	if (count == 1)	1525	if (count == 1)
…		…
1306	DEC_DEC_DEPTH;	1541	DEC_DEC_DEPTH;
1307	return 0;	1542	return 0;
1308	}	1543	}
1309		1544
1310	static SV *	1545	static SV *
		1546	decode_tag (dec_t *dec)
		1547	{
		1548	SV *tag = 0;
		1549	SV *val = 0;
		1550
		1551	if (!(dec->json.flags & F_ALLOW_TAGS))
		1552	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1553
		1554	++dec->cur;
		1555
		1556	decode_ws (dec);
		1557
		1558	tag = decode_sv (dec);
		1559	if (!tag)
		1560	goto fail;
		1561
		1562	if (!SvPOK (tag))
		1563	ERR ("malformed JSON string, (tag) must be a string");
		1564
		1565	decode_ws (dec);
		1566
		1567	if (*dec->cur != ')')
		1568	ERR (") expected after tag");
		1569
		1570	++dec->cur;
		1571
		1572	decode_ws (dec);
		1573
		1574	val = decode_sv (dec);
		1575	if (!val)
		1576	goto fail;
		1577
		1578	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1579	ERR ("malformed JSON string, tag value must be an array");
		1580
		1581	{
		1582	AV av = (AV )SvRV (val);
		1583	int i, len = av_len (av) + 1;
		1584	HV *stash = gv_stashsv (tag, 0);
		1585	SV *sv;
		1586
		1587	if (!stash)
		1588	ERR ("cannot decode perl-object (package does not exist)");
		1589
		1590	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1591
		1592	if (!method)
		1593	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1594
		1595	dSP;
		1596
		1597	ENTER; SAVETMPS;
		1598	PUSHMARK (SP);
		1599	EXTEND (SP, len + 2);
		1600	// we re-bless the reference to get overload and other niceties right
		1601	PUSHs (tag);
		1602	PUSHs (sv_json);
		1603
		1604	for (i = 0; i < len; ++i)
		1605	PUSHs (*av_fetch (av, i, 1));
		1606
		1607	PUTBACK;
		1608	call_sv ((SV *)GvCV (method), G_SCALAR);
		1609	SPAGAIN;
		1610
		1611	SvREFCNT_dec (tag);
		1612	SvREFCNT_dec (val);
		1613	sv = SvREFCNT_inc (POPs);
		1614
		1615	PUTBACK;
		1616
		1617	FREETMPS; LEAVE;
		1618
		1619	return sv;
		1620	}
		1621
		1622	fail:
		1623	SvREFCNT_dec (tag);
		1624	SvREFCNT_dec (val);
		1625	return 0;
		1626	}
		1627
		1628	static SV *
1311	decode_sv (dec_t *dec)	1629	decode_sv (dec_t *dec)
1312	{	1630	{
1313	// the beauty of JSON: you need exactly one character lookahead	1631	// the beauty of JSON: you need exactly one character lookahead
1314	// to parse everything.	1632	// to parse everything.
1315	switch (*dec->cur)	1633	switch (*dec->cur)
1316	{	1634	{
1317	case '"': ++dec->cur; return decode_str (dec);	1635	case '"': ++dec->cur; return decode_str (dec);
1318	case '[': ++dec->cur; return decode_av (dec);	1636	case '[': ++dec->cur; return decode_av (dec);
1319	case '{': ++dec->cur; return decode_hv (dec);	1637	case '{': ++dec->cur; return decode_hv (dec);
		1638	case '(': return decode_tag (dec);
1320		1639
1321	case '-':	1640	case '-':
1322	case '0': case '1': case '2': case '3': case '4':	1641	case '0': case '1': case '2': case '3': case '4':
1323	case '5': case '6': case '7': case '8': case '9':	1642	case '5': case '6': case '7': case '8': case '9':
1324	return decode_num (dec);	1643	return decode_num (dec);
…		…
1326	case 't':	1645	case 't':
1327	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1646	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1328	{	1647	{
1329	dec->cur += 4;	1648	dec->cur += 4;
1330	#if JSON_SLOW	1649	#if JSON_SLOW
1331	json_true = get_sv ("JSON::XS::true", 1); SvREADONLY_on (json_true);	1650	bool_true = get_bool ("Types::Serialiser::true");
1332	#endif	1651	#endif
1333	return SvREFCNT_inc (json_true);	1652	return newSVsv (bool_true);
1334	}	1653	}
1335	else	1654	else
1336	ERR ("'true' expected");	1655	ERR ("'true' expected");
1337		1656
1338	break;	1657	break;
…		…
1340	case 'f':	1659	case 'f':
1341	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1660	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1342	{	1661	{
1343	dec->cur += 5;	1662	dec->cur += 5;
1344	#if JSON_SLOW	1663	#if JSON_SLOW
1345	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1664	bool_false = get_bool ("Types::Serialiser::false");
1346	#endif	1665	#endif
1347	return SvREFCNT_inc (json_false);	1666	return newSVsv (bool_false);
1348	}	1667	}
1349	else	1668	else
1350	ERR ("'false' expected");	1669	ERR ("'false' expected");
1351		1670
1352	break;	1671	break;
…		…
1361	ERR ("'null' expected");	1680	ERR ("'null' expected");
1362		1681
1363	break;	1682	break;
1364		1683
1365	default:	1684	default:
1366	ERR ("malformed JSON string, neither array, object, number, string or atom");	1685	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1367	break;	1686	break;
1368	}	1687	}
1369		1688
1370	fail:	1689	fail:
1371	return 0;	1690	return 0;
1372	}	1691	}
1373		1692
1374	static SV *	1693	static SV *
1375	decode_json (SV string, JSON json, UV *offset_return)	1694	decode_json (SV string, JSON json, STRLEN *offset_return)
1376	{	1695	{
1377	dec_t dec;	1696	dec_t dec;
1378	UV offset;
1379	SV *sv;	1697	SV *sv;
1380		1698
		1699	/* work around bugs in 5.10 where manipulating magic values
		1700	* makes perl ignore the magic in subsequent accesses.
		1701	* also make a copy of non-PV values, to get them into a clean
		1702	* state (SvPV should do that, but it's buggy, see below).
		1703	*
		1704	* SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
		1705	* as reported by Reini Urban.
		1706	*/
1381	SvGETMAGIC (string);	1707	/SvGETMAGIC (string);/
		1708	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
		1709	string = sv_2mortal (newSVsv (string));
		1710
1382	SvUPGRADE (string, SVt_PV);	1711	SvUPGRADE (string, SVt_PV);
1383		1712
1384	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))	1713	/* work around a bug in perl 5.10, which causes SvCUR to fail an
		1714	* assertion with -DDEBUGGING, although SvCUR is documented to
		1715	* return the xpv_cur field which certainly exists after upgrading.
		1716	* according to nicholas clark, calling SvPOK fixes this.
		1717	* But it doesn't fix it, so try another workaround, call SvPV_nolen
		1718	* and hope for the best.
		1719	* Damnit, SvPV_nolen still trips over yet another assertion. This
		1720	* assertion business is seriously broken, try yet another workaround
		1721	* for the broken -DDEBUGGING.
		1722	*/
		1723	{
		1724	#ifdef DEBUGGING
		1725	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
		1726	#else
		1727	STRLEN offset = SvCUR (string);
		1728	#endif
		1729
		1730	if (offset > json->max_size && json->max_size)
1385	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1731	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1386	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));	1732	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
		1733	}
1387		1734
1388	if (json->flags & F_UTF8)	1735	if (DECODE_WANTS_OCTETS (json))
1389	sv_utf8_downgrade (string, 0);	1736	sv_utf8_downgrade (string, 0);
1390	else	1737	else
1391	sv_utf8_upgrade (string);	1738	sv_utf8_upgrade (string);
1392		1739
1393	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1740	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
1394		1741
1395	dec.json = *json;	1742	dec.json = *json;
1396	dec.cur = SvPVX (string);	1743	dec.cur = SvPVX (string);
1397	dec.end = SvEND (string);	1744	dec.end = SvEND (string);
1398	dec.err = 0;	1745	dec.err = 0;
1399	dec.depth = 0;	1746	dec.depth = 0;
1400	dec.maxdepth = DEC_DEPTH (dec.json.flags);
1401		1747
1402	if (dec.json.cb_object \|\| dec.json.cb_sk_object)	1748	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
1403	dec.json.flags \|= F_HOOK;	1749	dec.json.flags \|= F_HOOK;
1404		1750
1405	*dec.end = 0; // this should basically be a nop, too, but make sure it's there	1751	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
1406		1752
1407	decode_ws (&dec);	1753	decode_ws (&dec);
1408	sv = decode_sv (&dec);	1754	sv = decode_sv (&dec);
1409		1755
1410	if (!(offset_return \|\| !sv))	1756	if (offset_return)
		1757	*offset_return = dec.cur - SvPVX (string);
		1758	else if (sv)
1411	{	1759	{
1412	// check for trailing garbage	1760	// check for trailing garbage
1413	decode_ws (&dec);	1761	decode_ws (&dec);
1414		1762
1415	if (*dec.cur)	1763	if (*dec.cur)
1416	{	1764	{
1417	dec.err = "garbage after JSON object";	1765	dec.err = "garbage after JSON object";
1418	SvREFCNT_dec (sv);	1766	SvREFCNT_dec (sv);
1419	sv = 0;	1767	sv = 0;
1420	}	1768	}
1421	}
1422
1423	if (offset_return \|\| !sv)
1424	{
1425	offset = dec.json.flags & F_UTF8
1426	? dec.cur - SvPVX (string)
1427	: utf8_distance (dec.cur, SvPVX (string));
1428
1429	if (offset_return)
1430	*offset_return = offset;
1431	}	1769	}
1432		1770
1433	if (!sv)	1771	if (!sv)
1434	{	1772	{
1435	SV *uni = sv_newmortal ();	1773	SV *uni = sv_newmortal ();
…		…
1441	SAVEVPTR (PL_curcop);	1779	SAVEVPTR (PL_curcop);
1442	PL_curcop = &cop;	1780	PL_curcop = &cop;
1443	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1781	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1444	LEAVE;	1782	LEAVE;
1445		1783
1446	croak ("%s, at character offset %d [\"%s\"]",	1784	croak ("%s, at character offset %d (before \"%s\")",
1447	dec.err,	1785	dec.err,
1448	(int)offset,	1786	(int)ptr_to_index (string, dec.cur),
1449	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1787	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1450	}	1788	}
1451		1789
1452	sv = sv_2mortal (sv);	1790	sv = sv_2mortal (sv);
1453		1791
1454	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1792	if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1455	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1793	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1456		1794
1457	return sv;	1795	return sv;
		1796	}
		1797
		1798	/////////////////////////////////////////////////////////////////////////////
		1799	// incremental parser
		1800
		1801	static void
		1802	incr_parse (JSON *self)
		1803	{
		1804	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1805
		1806	// the state machine here is a bit convoluted and could be simplified a lot
		1807	// but this would make it slower, so...
		1808
		1809	for (;;)
		1810	{
		1811	//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
		1812	switch (self->incr_mode)
		1813	{
		1814	// only used for initial whitespace skipping
		1815	case INCR_M_WS:
		1816	for (;;)
		1817	{
		1818	if (*p > 0x20)
		1819	{
		1820	if (*p == '#')
		1821	{
		1822	self->incr_mode = INCR_M_C0;
		1823	goto incr_m_c;
		1824	}
		1825	else
		1826	{
		1827	self->incr_mode = INCR_M_JSON;
		1828	goto incr_m_json;
		1829	}
		1830	}
		1831	else if (!*p)
		1832	goto interrupt;
		1833
		1834	++p;
		1835	}
		1836
		1837	// skip a single char inside a string (for \\-processing)
		1838	case INCR_M_BS:
		1839	if (!*p)
		1840	goto interrupt;
		1841
		1842	++p;
		1843	self->incr_mode = INCR_M_STR;
		1844	goto incr_m_str;
		1845
		1846	// inside #-style comments
		1847	case INCR_M_C0:
		1848	case INCR_M_C1:
		1849	incr_m_c:
		1850	for (;;)
		1851	{
		1852	if (*p == '\n')
		1853	{
		1854	self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON;
		1855	break;
		1856	}
		1857	else if (!*p)
		1858	goto interrupt;
		1859
		1860	++p;
		1861	}
		1862
		1863	break;
		1864
		1865	// inside a string
		1866	case INCR_M_STR:
		1867	incr_m_str:
		1868	for (;;)
		1869	{
		1870	if (*p == '"')
		1871	{
		1872	++p;
		1873	self->incr_mode = INCR_M_JSON;
		1874
		1875	if (!self->incr_nest)
		1876	goto interrupt;
		1877
		1878	goto incr_m_json;
		1879	}
		1880	else if (*p == '\\')
		1881	{
		1882	++p; // "virtually" consumes character after \
		1883
		1884	if (!*p) // if at end of string we have to switch modes
		1885	{
		1886	self->incr_mode = INCR_M_BS;
		1887	goto interrupt;
		1888	}
		1889	}
		1890	else if (!*p)
		1891	goto interrupt;
		1892
		1893	++p;
		1894	}
		1895
		1896	// after initial ws, outside string
		1897	case INCR_M_JSON:
		1898	incr_m_json:
		1899	for (;;)
		1900	{
		1901	switch (*p++)
		1902	{
		1903	case 0:
		1904	--p;
		1905	goto interrupt;
		1906
		1907	case 0x09:
		1908	case 0x0a:
		1909	case 0x0d:
		1910	case 0x20:
		1911	if (!self->incr_nest)
		1912	{
		1913	--p; // do not eat the whitespace, let the next round do it
		1914	goto interrupt;
		1915	}
		1916	break;
		1917
		1918	case '"':
		1919	self->incr_mode = INCR_M_STR;
		1920	goto incr_m_str;
		1921
		1922	case '[':
		1923	case '{':
		1924	case '(':
		1925	if (++self->incr_nest > self->max_depth)
		1926	croak (ERR_NESTING_EXCEEDED);
		1927	break;
		1928
		1929	case ']':
		1930	case '}':
		1931	if (--self->incr_nest <= 0)
		1932	goto interrupt;
		1933	break;
		1934
		1935	case ')':
		1936	--self->incr_nest;
		1937	break;
		1938
		1939	case '#':
		1940	self->incr_mode = INCR_M_C1;
		1941	goto incr_m_c;
		1942	}
		1943	}
		1944	}
		1945
		1946	modechange:
		1947	;
		1948	}
		1949
		1950	interrupt:
		1951	self->incr_pos = p - SvPVX (self->incr_text);
		1952	//printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D
		1953	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
1458	}	1954	}
1459		1955
1460	/////////////////////////////////////////////////////////////////////////////	1956	/////////////////////////////////////////////////////////////////////////////
1461	// XS interface functions	1957	// XS interface functions
1462		1958
…		…
1471	i >= '0' && i <= '9' ? i - '0'	1967	i >= '0' && i <= '9' ? i - '0'
1472	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1968	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1473	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1969	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1474	: -1;	1970	: -1;
1475		1971
1476	json_stash = gv_stashpv ("JSON::XS" , 1);	1972	json_stash = gv_stashpv ("JSON::XS" , 1);
1477	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	1973	bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
		1974	bool_true = get_bool ("Types::Serialiser::true");
		1975	bool_false = get_bool ("Types::Serialiser::false");
1478		1976
1479	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );	1977	sv_json = newSVpv ("JSON", 0);
1480	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);	1978	SvREADONLY_on (sv_json);
		1979
		1980	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1481	}	1981	}
1482		1982
1483	PROTOTYPES: DISABLE	1983	PROTOTYPES: DISABLE
1484		1984
1485	void CLONE (...)	1985	void CLONE (...)
1486	CODE:	1986	CODE:
1487	json_stash = 0;	1987	json_stash = 0;
1488	json_boolean_stash = 0;	1988	bool_stash = 0;
1489		1989
1490	void new (char *klass)	1990	void new (char *klass)
1491	PPCODE:	1991	PPCODE:
1492	{	1992	{
1493	SV *pv = NEWSV (0, sizeof (JSON));	1993	SV *pv = NEWSV (0, sizeof (JSON));
1494	SvPOK_only (pv);	1994	SvPOK_only (pv);
1495	Zero (SvPVX (pv), 1, JSON);	1995	json_init ((JSON *)SvPVX (pv));
1496	((JSON *)SvPVX (pv))->flags = F_DEFAULT;
1497	XPUSHs (sv_2mortal (sv_bless (	1996	XPUSHs (sv_2mortal (sv_bless (
1498	newRV_noinc (pv),	1997	newRV_noinc (pv),
1499	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	1998	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1500	)));	1999	)));
1501	}	2000	}
…		…
1513	allow_nonref = F_ALLOW_NONREF	2012	allow_nonref = F_ALLOW_NONREF
1514	shrink = F_SHRINK	2013	shrink = F_SHRINK
1515	allow_blessed = F_ALLOW_BLESSED	2014	allow_blessed = F_ALLOW_BLESSED
1516	convert_blessed = F_CONV_BLESSED	2015	convert_blessed = F_CONV_BLESSED
1517	relaxed = F_RELAXED	2016	relaxed = F_RELAXED
		2017	allow_unknown = F_ALLOW_UNKNOWN
		2018	allow_tags = F_ALLOW_TAGS
1518	PPCODE:	2019	PPCODE:
1519	{	2020	{
1520	if (enable)	2021	if (enable)
1521	self->flags \|= ix;	2022	self->flags \|= ix;
1522	else	2023	else
…		…
1537	get_allow_nonref = F_ALLOW_NONREF	2038	get_allow_nonref = F_ALLOW_NONREF
1538	get_shrink = F_SHRINK	2039	get_shrink = F_SHRINK
1539	get_allow_blessed = F_ALLOW_BLESSED	2040	get_allow_blessed = F_ALLOW_BLESSED
1540	get_convert_blessed = F_CONV_BLESSED	2041	get_convert_blessed = F_CONV_BLESSED
1541	get_relaxed = F_RELAXED	2042	get_relaxed = F_RELAXED
		2043	get_allow_unknown = F_ALLOW_UNKNOWN
		2044	get_allow_tags = F_ALLOW_TAGS
1542	PPCODE:	2045	PPCODE:
1543	XPUSHs (boolSV (self->flags & ix));	2046	XPUSHs (boolSV (self->flags & ix));
1544		2047
1545	void max_depth (JSON *self, UV max_depth = 0x80000000UL)	2048	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1546	PPCODE:	2049	PPCODE:
1547	{	2050	self->max_depth = max_depth;
1548	UV log2 = 0;
1549
1550	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1551
1552	while ((1UL << log2) < max_depth)
1553	++log2;
1554
1555	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1556
1557	XPUSHs (ST (0));	2051	XPUSHs (ST (0));
1558	}
1559		2052
1560	U32 get_max_depth (JSON *self)	2053	U32 get_max_depth (JSON *self)
1561	CODE:	2054	CODE:
1562	RETVAL = DEC_DEPTH (self->flags);	2055	RETVAL = self->max_depth;
1563	OUTPUT:	2056	OUTPUT:
1564	RETVAL	2057	RETVAL
1565		2058
1566	void max_size (JSON *self, UV max_size = 0)	2059	void max_size (JSON *self, U32 max_size = 0)
1567	PPCODE:	2060	PPCODE:
1568	{	2061	self->max_size = max_size;
1569	UV log2 = 0;
1570
1571	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
1572	if (max_size == 1) max_size = 2;
1573
1574	while ((1UL << log2) < max_size)
1575	++log2;
1576
1577	self->flags = self->flags & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
1578
1579	XPUSHs (ST (0));	2062	XPUSHs (ST (0));
1580	}
1581		2063
1582	int get_max_size (JSON *self)	2064	int get_max_size (JSON *self)
1583	CODE:	2065	CODE:
1584	RETVAL = DEC_SIZE (self->flags);	2066	RETVAL = self->max_size;
1585	OUTPUT:	2067	OUTPUT:
1586	RETVAL	2068	RETVAL
1587		2069
1588	void filter_json_object (JSON self, SV cb = &PL_sv_undef)	2070	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1589	PPCODE:	2071	PPCODE:
…		…
1595	}	2077	}
1596		2078
1597	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2079	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1598	PPCODE:	2080	PPCODE:
1599	{	2081	{
1600	if (!self->cb_sk_object)	2082	if (!self->cb_sk_object)
1601	self->cb_sk_object = newHV ();	2083	self->cb_sk_object = newHV ();
1602		2084
1603	if (SvOK (cb))	2085	if (SvOK (cb))
1604	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2086	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1605	else	2087	else
…		…
1616	XPUSHs (ST (0));	2098	XPUSHs (ST (0));
1617	}	2099	}
1618		2100
1619	void encode (JSON self, SV scalar)	2101	void encode (JSON self, SV scalar)
1620	PPCODE:	2102	PPCODE:
1621	XPUSHs (encode_json (scalar, self));	2103	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2104	XPUSHs (scalar);
1622		2105
1623	void decode (JSON self, SV jsonstr)	2106	void decode (JSON self, SV jsonstr)
1624	PPCODE:	2107	PPCODE:
1625	XPUSHs (decode_json (jsonstr, self, 0));	2108	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2109	XPUSHs (jsonstr);
1626		2110
1627	void decode_prefix (JSON self, SV jsonstr)	2111	void decode_prefix (JSON self, SV jsonstr)
1628	PPCODE:	2112	PPCODE:
1629	{	2113	{
1630	UV offset;	2114	SV *sv;
		2115	STRLEN offset;
		2116	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1631	EXTEND (SP, 2);	2117	EXTEND (SP, 2);
1632	PUSHs (decode_json (jsonstr, self, &offset));	2118	PUSHs (sv);
1633	PUSHs (sv_2mortal (newSVuv (offset)));	2119	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
		2120	}
		2121
		2122	void incr_parse (JSON self, SV jsonstr = 0)
		2123	PPCODE:
		2124	{
		2125	if (!self->incr_text)
		2126	self->incr_text = newSVpvn ("", 0);
		2127
		2128	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2129	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2130	if (DECODE_WANTS_OCTETS (self))
		2131	{
		2132	if (self->incr_pos)
		2133	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2134	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2135
		2136	sv_utf8_downgrade (self->incr_text, 0);
		2137	}
		2138	else
		2139	{
		2140	sv_utf8_upgrade (self->incr_text);
		2141
		2142	if (self->incr_pos)
		2143	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2144	- (U8 *)SvPVX (self->incr_text);
		2145	}
		2146
		2147	// append data, if any
		2148	if (jsonstr)
		2149	{
		2150	/* make sure both strings have same encoding */
		2151	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
		2152	if (SvUTF8 (jsonstr))
		2153	sv_utf8_downgrade (jsonstr, 0);
		2154	else
		2155	sv_utf8_upgrade (jsonstr);
		2156
		2157	/* and then just blindly append */
		2158	{
		2159	STRLEN len;
		2160	const char *str = SvPV (jsonstr, len);
		2161	STRLEN cur = SvCUR (self->incr_text);
		2162
		2163	if (SvLEN (self->incr_text) <= cur + len)
		2164	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
		2165
		2166	Move (str, SvEND (self->incr_text), len, char);
		2167	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
		2168	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
		2169	}
		2170	}
		2171
		2172	if (GIMME_V != G_VOID)
		2173	do
		2174	{
		2175	SV *sv;
		2176	STRLEN offset;
		2177
		2178	if (!INCR_DONE (self))
		2179	{
		2180	incr_parse (self);
		2181
		2182	if (self->incr_pos > self->max_size && self->max_size)
		2183	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		2184	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
		2185
		2186	if (!INCR_DONE (self))
		2187	{
		2188	// as an optimisation, do not accumulate white space in the incr buffer
		2189	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2190	{
		2191	self->incr_pos = 0;
		2192	SvCUR_set (self->incr_text, 0);
		2193	}
		2194
		2195	break;
		2196	}
		2197	}
		2198
		2199	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2200	XPUSHs (sv);
		2201
		2202	self->incr_pos -= offset;
		2203	self->incr_nest = 0;
		2204	self->incr_mode = 0;
		2205
		2206	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
		2207	}
		2208	while (GIMME_V == G_ARRAY);
		2209	}
		2210
		2211	SV incr_text (JSON self)
		2212	ATTRS: lvalue
		2213	CODE:
		2214	{
		2215	if (self->incr_pos)
		2216	croak ("incr_text can not be called when the incremental parser already started parsing");
		2217
		2218	RETVAL = self->incr_text ? SvREFCNT_inc (self->incr_text) : &PL_sv_undef;
		2219	}
		2220	OUTPUT:
		2221	RETVAL
		2222
		2223	void incr_skip (JSON *self)
		2224	CODE:
		2225	{
		2226	if (self->incr_pos)
		2227	{
		2228	sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos);
		2229	self->incr_pos = 0;
		2230	self->incr_nest = 0;
		2231	self->incr_mode = 0;
		2232	}
		2233	}
		2234
		2235	void incr_reset (JSON *self)
		2236	CODE:
		2237	{
		2238	SvREFCNT_dec (self->incr_text);
		2239	self->incr_text = 0;
		2240	self->incr_pos = 0;
		2241	self->incr_nest = 0;
		2242	self->incr_mode = 0;
1634	}	2243	}
1635		2244
1636	void DESTROY (JSON *self)	2245	void DESTROY (JSON *self)
1637	CODE:	2246	CODE:
1638	SvREFCNT_dec (self->cb_sk_object);	2247	SvREFCNT_dec (self->cb_sk_object);
1639	SvREFCNT_dec (self->cb_object);	2248	SvREFCNT_dec (self->cb_object);
		2249	SvREFCNT_dec (self->incr_text);
1640		2250
1641	PROTOTYPES: ENABLE	2251	PROTOTYPES: ENABLE
1642		2252
1643	void encode_json (SV *scalar)	2253	void encode_json (SV *scalar)
1644	PPCODE:	2254	PPCODE:
1645	{	2255	{
1646	JSON json = { F_DEFAULT \| F_UTF8 };	2256	JSON json;
1647	XPUSHs (encode_json (scalar, &json));	2257	json_init (&json);
		2258	json.flags \|= F_UTF8;
		2259	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2260	XPUSHs (scalar);
1648	}	2261	}
1649		2262
1650	void decode_json (SV *jsonstr)	2263	void decode_json (SV *jsonstr)
1651	PPCODE:	2264	PPCODE:
1652	{	2265	{
1653	JSON json = { F_DEFAULT \| F_UTF8 };	2266	JSON json;
1654	XPUSHs (decode_json (jsonstr, &json, 0));	2267	json_init (&json);
		2268	json.flags \|= F_UTF8;
		2269	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2270	XPUSHs (jsonstr);
1655	}	2271	}
1656		2272

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Comparing JSON-XS/XS.xs (file contents): Revision 1.74 by root, Wed Mar 19 15:17:53 2008 UTC vs. Revision 1.129 by root, Wed Nov 16 18:06:34 2016 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.74 by root, Wed Mar 19 15:17:53 2008 UTC vs.
Revision 1.129 by root, Wed Nov 16 18:06:34 2016 UTC