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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.102 by root, Sat Oct 10 01:48:50 2009 UTC vs.
Revision 1.134 by root, Thu Nov 15 20:13:03 2018 UTC

…		…
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 <limits.h>
10	#include <float.h>	10	#include <float.h>
		11	#include <inttypes.h>
11		12
12	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	13	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
13	# define snprintf _snprintf // C compilers have this in stdio.h	14	# define snprintf _snprintf // C compilers have this in stdio.h
14	#endif	15	#endif
15		16
16	// some old perls do not have this, try to make it work, no	17	// some old perls do not have this, try to make it work, no
17	// guarantees, though. if it breaks, you get to keep the pieces.	18	// guarantees, though. if it breaks, you get to keep the pieces.
18	#ifndef UTF8_MAXBYTES	19	#ifndef UTF8_MAXBYTES
19	# define UTF8_MAXBYTES 13	20	# define UTF8_MAXBYTES 13
		21	#endif
		22
		23	// compatibility with perl <5.18
		24	#ifndef HvNAMELEN_get
		25	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		26	#endif
		27	#ifndef HvNAMELEN
		28	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		29	#endif
		30	#ifndef HvNAMEUTF8
		31	# define HvNAMEUTF8(hv) 0
20	#endif	32	#endif
21		33
22	// three extra for rounding, sign, and end of string	34	// three extra for rounding, sign, and end of string
23	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)	35	#define IVUV_MAXCHARS (sizeof (UV) * CHAR_BIT * 28 / 93 + 3)
24		36
…		…
33	#define F_SHRINK 0x00000200UL	45	#define F_SHRINK 0x00000200UL
34	#define F_ALLOW_BLESSED 0x00000400UL	46	#define F_ALLOW_BLESSED 0x00000400UL
35	#define F_CONV_BLESSED 0x00000800UL	47	#define F_CONV_BLESSED 0x00000800UL
36	#define F_RELAXED 0x00001000UL	48	#define F_RELAXED 0x00001000UL
37	#define F_ALLOW_UNKNOWN 0x00002000UL	49	#define F_ALLOW_UNKNOWN 0x00002000UL
		50	#define F_ALLOW_TAGS 0x00004000UL
38	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing	51	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
39		52
40	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	53	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
41		54
42	#define INIT_SIZE 32 // initial scalar size to be allocated	55	#define INIT_SIZE 64 // initial scalar size to be allocated
43	#define INDENT_STEP 3 // spaces per indentation level	56	#define INDENT_STEP 3 // spaces per indentation level
44		57
45	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size	58	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
		59
		60	#define DECODE_WANTS_OCTETS(json) ((json)->flags & F_UTF8)
46		61
47	#define SB do {	62	#define SB do {
48	#define SE } while (0)	63	#define SE } while (0)
49		64
50	#if __GNUC__ >= 3	65	#if __GNUC__ >= 3
…		…
63	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	78	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
64		79
65	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"	80	#define ERR_NESTING_EXCEEDED "json text or perl structure exceeds maximum nesting level (max_depth set too low?)"
66		81
67	#ifdef USE_ITHREADS	82	#ifdef USE_ITHREADS
68	# define JSON_SLOW 1
69	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))	83	# define JSON_STASH (expect_true (json_stash) ? json_stash : gv_stashpv ("JSON::XS", 1))
		84	# define BOOL_STASH (expect_true (bool_stash) ? bool_stash : gv_stashpv ("Types::Serialiser::Boolean", 1))
		85	# define GET_BOOL(value) (expect_true (bool_ ## value) ? bool_ ## value : get_bool ("Types::Serialiser::" # value))
70	#else	86	#else
71	# define JSON_SLOW 0
72	# define JSON_STASH json_stash	87	# define JSON_STASH json_stash
		88	# define BOOL_STASH bool_stash
		89	# define GET_BOOL(value) bool_ ## value
73	#endif	90	#endif
74		91
75	static HV json_stash, json_boolean_stash; // JSON::XS::	92	// the amount of HEs to allocate on the stack, when sorting keys
76	static SV json_true, json_false;	93	#define STACK_HES 64
		94
		95	static HV json_stash, bool_stash; // JSON::XS::, Types::Serialiser::Boolean::
		96	static SV bool_false, bool_true;
		97	static SV *sv_json;
77		98
78	enum {	99	enum {
79	INCR_M_WS = 0, // initial whitespace skipping, must be 0	100	INCR_M_WS = 0, // initial whitespace skipping, must be 0
80	INCR_M_STR, // inside string	101	INCR_M_STR, // inside string
81	INCR_M_BS, // inside backslash	102	INCR_M_BS, // inside backslash
		103	INCR_M_C0, // inside comment in initial whitespace sequence
		104	INCR_M_C1, // inside comment in other places
82	INCR_M_JSON // outside anything, count nesting	105	INCR_M_JSON // outside anything, count nesting
83	};	106	};
84		107
85	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)	108	#define INCR_DONE(json) ((json)->incr_nest <= 0 && (json)->incr_mode == INCR_M_JSON)
86		109
…		…
95	// for the incremental parser	118	// for the incremental parser
96	SV *incr_text; // the source text so far	119	SV *incr_text; // the source text so far
97	STRLEN incr_pos; // the current offset into the text	120	STRLEN incr_pos; // the current offset into the text
98	int incr_nest; // {[]}-nesting level	121	int incr_nest; // {[]}-nesting level
99	unsigned char incr_mode;	122	unsigned char incr_mode;
		123
		124	SV v_false, v_true;
100	} JSON;	125	} JSON;
101		126
102	INLINE void	127	INLINE void
103	json_init (JSON *json)	128	json_init (JSON *json)
104	{	129	{
…		…
133	SvPV_renew (sv, SvCUR (sv) + 1);	158	SvPV_renew (sv, SvCUR (sv) + 1);
134	#endif	159	#endif
135	}	160	}
136	}	161	}
137		162
		163	/* adds two STRLENs together, slow, and with paranoia */
		164	STRLEN
		165	strlen_sum (STRLEN l1, STRLEN l2)
		166	{
		167	size_t sum = l1 + l2;
		168
		169	if (sum < (size_t)l2 \|\| sum != (size_t)(STRLEN)sum)
		170	croak ("JSON::XS: string size overflow");
		171
		172	return sum;
		173	}
		174
		175	/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */
		176	static char *
		177	json_sv_grow (SV *sv, size_t len1, size_t len2)
		178	{
		179	len1 = strlen_sum (len1, len2);
		180	len1 = strlen_sum (len1, len1 >> 1);
		181
		182	if (len1 > 4096 - 24)
		183	len1 = (len1 \| 4095) - 24;
		184
		185	return SvGROW (sv, len1);
		186	}
		187
138	// decode an utf-8 character and return it, or (UV)-1 in	188	// decode a utf-8 character and return it, or (UV)-1 in
139	// case of an error.	189	// case of an error.
140	// we special-case "safe" characters from U+80 .. U+7FF,	190	// we special-case "safe" characters from U+80 .. U+7FF,
141	// but use the very good perl function to parse anything else.	191	// but use the very good perl function to parse anything else.
142	// note that we never call this function for a ascii codepoints	192	// note that we never call this function for a ascii codepoints
143	INLINE UV	193	INLINE UV
…		…
186	? utf8_distance (offset, SvPVX (sv))	236	? utf8_distance (offset, SvPVX (sv))
187	: offset - SvPVX (sv);	237	: offset - SvPVX (sv);
188	}	238	}
189		239
190	/////////////////////////////////////////////////////////////////////////////	240	/////////////////////////////////////////////////////////////////////////////
		241	// fp hell
		242
		243	// scan a group of digits, and a trailing exponent
		244	static void
		245	json_atof_scan1 (const char s, NV accum, int *expo, int postdp, int maxdepth)
		246	{
		247	UV uaccum = 0;
		248	int eaccum = 0;
		249
		250	// if we recurse too deep, skip all remaining digits
		251	// to avoid a stack overflow attack
		252	if (expect_false (--maxdepth <= 0))
		253	while (((U8)*s - '0') < 10)
		254	++s;
		255
		256	for (;;)
		257	{
		258	U8 dig = (U8)*s - '0';
		259
		260	if (expect_false (dig >= 10))
		261	{
		262	if (dig == (U8)((U8)'.' - (U8)'0'))
		263	{
		264	++s;
		265	json_atof_scan1 (s, accum, expo, 1, maxdepth);
		266	}
		267	else if ((dig \| ' ') == 'e' - '0')
		268	{
		269	int exp2 = 0;
		270	int neg = 0;
		271
		272	++s;
		273
		274	if (*s == '-')
		275	{
		276	++s;
		277	neg = 1;
		278	}
		279	else if (*s == '+')
		280	++s;
		281
		282	while ((dig = (U8)*s - '0') < 10)
		283	exp2 = exp2 * 10 + *s++ - '0';
		284
		285	*expo += neg ? -exp2 : exp2;
		286	}
		287
		288	break;
		289	}
		290
		291	++s;
		292
		293	uaccum = uaccum * 10 + dig;
		294	++eaccum;
		295
		296	// if we have too many digits, then recurse for more
		297	// we actually do this for rather few digits
		298	if (uaccum >= (UV_MAX - 9) / 10)
		299	{
		300	if (postdp) *expo -= eaccum;
		301	json_atof_scan1 (s, accum, expo, postdp, maxdepth);
		302	if (postdp) *expo += eaccum;
		303
		304	break;
		305	}
		306	}
		307
		308	// this relies greatly on the quality of the pow ()
		309	// implementation of the platform, but a good
		310	// implementation is hard to beat.
		311	// (IEEE 754 conformant ones are required to be exact)
		312	if (postdp) *expo -= eaccum;
		313	accum += uaccum Perl_pow (10., *expo);
		314	*expo += eaccum;
		315	}
		316
		317	static NV
		318	json_atof (const char *s)
		319	{
		320	NV accum = 0.;
		321	int expo = 0;
		322	int neg = 0;
		323
		324	if (*s == '-')
		325	{
		326	++s;
		327	neg = 1;
		328	}
		329
		330	// a recursion depth of ten gives us >>500 bits
		331	json_atof_scan1 (s, &accum, &expo, 0, 10);
		332
		333	return neg ? -accum : accum;
		334	}
		335
		336	// target of scalar reference is bool? -1 == nope, 0 == false, 1 == true
		337	static int
		338	ref_bool_type (SV *sv)
		339	{
		340	svtype svt = SvTYPE (sv);
		341
		342	if (svt < SVt_PVAV)
		343	{
		344	STRLEN len = 0;
		345	char *pv = svt ? SvPV (sv, len) : 0;
		346
		347	if (len == 1)
		348	if (*pv == '1')
		349	return 1;
		350	else if (*pv == '0')
		351	return 0;
		352	}
		353
		354	return -1;
		355	}
		356
		357	// returns whether scalar is not a reference in the sense of allow_nonref
		358	static int
		359	json_nonref (SV *scalar)
		360	{
		361	if (!SvROK (scalar))
		362	return 1;
		363
		364	scalar = SvRV (scalar);
		365
		366	if (SvTYPE (scalar) >= SVt_PVMG)
		367	{
		368	if (SvSTASH (scalar) == bool_stash)
		369	return 1;
		370
		371	if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0)
		372	return 1;
		373	}
		374
		375	return 0;
		376	}
		377
		378	/////////////////////////////////////////////////////////////////////////////
191	// encoder	379	// encoder
192		380
193	// structure used for encoding JSON	381	// structure used for encoding JSON
194	typedef struct	382	typedef struct
195	{	383	{
…		…
202	} enc_t;	390	} enc_t;
203		391
204	INLINE void	392	INLINE void
205	need (enc_t *enc, STRLEN len)	393	need (enc_t *enc, STRLEN len)
206	{	394	{
207	if (expect_false (enc->cur + len >= enc->end))	395	if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
208	{	396	{
209	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	397	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
210	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	398	char *buf = json_sv_grow (enc->sv, cur, len);
211	enc->cur = SvPVX (enc->sv) + cur;	399	enc->cur = buf + cur;
212	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	400	enc->end = buf + SvLEN (enc->sv) - 1;
213	}	401	}
214	}	402	}
215		403
216	INLINE void	404	INLINE void
217	encode_ch (enc_t *enc, char ch)	405	encode_ch (enc_t *enc, char ch)
…		…
233		421
234	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case	422	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
235	{	423	{
236	if (expect_false (ch == '"')) // but with slow exceptions	424	if (expect_false (ch == '"')) // but with slow exceptions
237	{	425	{
238	need (enc, len += 1);	426	need (enc, len + 1);
239	*enc->cur++ = '\\';	427	*enc->cur++ = '\\';
240	*enc->cur++ = '"';	428	*enc->cur++ = '"';
241	}	429	}
242	else if (expect_false (ch == '\\'))	430	else if (expect_false (ch == '\\'))
243	{	431	{
244	need (enc, len += 1);	432	need (enc, len + 1);
245	*enc->cur++ = '\\';	433	*enc->cur++ = '\\';
246	*enc->cur++ = '\\';	434	*enc->cur++ = '\\';
247	}	435	}
248	else	436	else
249	*enc->cur++ = ch;	437	*enc->cur++ = ch;
…		…
252	}	440	}
253	else	441	else
254	{	442	{
255	switch (ch)	443	switch (ch)
256	{	444	{
257	case '\010': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;	445	case '\010': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'b'; ++str; break;
258	case '\011': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 't'; ++str; break;	446	case '\011': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 't'; ++str; break;
259	case '\012': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;	447	case '\012': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'n'; ++str; break;
260	case '\014': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;	448	case '\014': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'f'; ++str; break;
261	case '\015': need (enc, len += 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;	449	case '\015': need (enc, len + 1); enc->cur++ = '\\'; enc->cur++ = 'r'; ++str; break;
262		450
263	default:	451	default:
264	{	452	{
265	STRLEN clen;	453	STRLEN clen;
266	UV uch;	454	UV uch;
…		…
282	if (uch >= 0x10000UL)	470	if (uch >= 0x10000UL)
283	{	471	{
284	if (uch >= 0x110000UL)	472	if (uch >= 0x110000UL)
285	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);	473	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
286		474
287	need (enc, len += 11);	475	need (enc, len + 11);
288	sprintf (enc->cur, "\\u%04x\\u%04x",	476	sprintf (enc->cur, "\\u%04x\\u%04x",
289	(int)((uch - 0x10000) / 0x400 + 0xD800),	477	(int)((uch - 0x10000) / 0x400 + 0xD800),
290	(int)((uch - 0x10000) % 0x400 + 0xDC00));	478	(int)((uch - 0x10000) % 0x400 + 0xDC00));
291	enc->cur += 12;	479	enc->cur += 12;
292	}	480	}
293	else	481	else
294	{	482	{
295	need (enc, len += 5);	483	need (enc, len + 5);
296	*enc->cur++ = '\\';	484	*enc->cur++ = '\\';
297	*enc->cur++ = 'u';	485	*enc->cur++ = 'u';
298	*enc->cur++ = PL_hexdigit [ uch >> 12 ];	486	*enc->cur++ = PL_hexdigit [ uch >> 12 ];
299	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];	487	*enc->cur++ = PL_hexdigit [(uch >> 8) & 15];
300	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];	488	*enc->cur++ = PL_hexdigit [(uch >> 4) & 15];
…		…
308	*enc->cur++ = uch;	496	*enc->cur++ = uch;
309	str += clen;	497	str += clen;
310	}	498	}
311	else if (is_utf8)	499	else if (is_utf8)
312	{	500	{
313	need (enc, len += clen);	501	need (enc, len + clen);
314	do	502	do
315	{	503	{
316	enc->cur++ = str++;	504	enc->cur++ = str++;
317	}	505	}
318	while (--clen);	506	while (--clen);
319	}	507	}
320	else	508	else
321	{	509	{
322	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed	510	need (enc, len + UTF8_MAXBYTES - 1); // never more than 11 bytes needed
323	enc->cur = encode_utf8 (enc->cur, uch);	511	enc->cur = encode_utf8 (enc->cur, uch);
324	++str;	512	++str;
325	}	513	}
326	}	514	}
327	}	515	}
…		…
381		569
382	if (enc->indent >= enc->json.max_depth)	570	if (enc->indent >= enc->json.max_depth)
383	croak (ERR_NESTING_EXCEEDED);	571	croak (ERR_NESTING_EXCEEDED);
384		572
385	encode_ch (enc, '[');	573	encode_ch (enc, '[');
386		574
387	if (len >= 0)	575	if (len >= 0)
388	{	576	{
389	encode_nl (enc); ++enc->indent;	577	encode_nl (enc); ++enc->indent;
390		578
391	for (i = 0; i <= len; ++i)	579	for (i = 0; i <= len; ++i)
…		…
403	encode_comma (enc);	591	encode_comma (enc);
404	}	592	}
405		593
406	encode_nl (enc); --enc->indent; encode_indent (enc);	594	encode_nl (enc); --enc->indent; encode_indent (enc);
407	}	595	}
408		596
409	encode_ch (enc, ']');	597	encode_ch (enc, ']');
410	}	598	}
411		599
412	static void	600	static void
413	encode_hk (enc_t enc, HE he)	601	encode_hk (enc_t enc, HE he)
…		…
417	if (HeKLEN (he) == HEf_SVKEY)	605	if (HeKLEN (he) == HEf_SVKEY)
418	{	606	{
419	SV *sv = HeSVKEY (he);	607	SV *sv = HeSVKEY (he);
420	STRLEN len;	608	STRLEN len;
421	char *str;	609	char *str;
422		610
423	SvGETMAGIC (sv);	611	SvGETMAGIC (sv);
424	str = SvPV (sv, len);	612	str = SvPV (sv, len);
425		613
426	encode_str (enc, str, len, SvUTF8 (sv));	614	encode_str (enc, str, len, SvUTF8 (sv));
427	}	615	}
…		…
493	}	681	}
494		682
495	if (count)	683	if (count)
496	{	684	{
497	int i, fast = 1;	685	int i, fast = 1;
498	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	686	HE *hes_stack [STACK_HES];
499	HE *hes = _alloca (count sizeof (HE));	687	HE **hes = hes_stack;
500	#else	688
501	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	689	// allocate larger arrays on the heap
502	#endif	690	if (count > STACK_HES)
		691	{
		692	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		693	hes = (HE **)SvPVX (sv);
		694	}
503		695
504	i = 0;	696	i = 0;
505	while ((he = hv_iternext (hv)))	697	while ((he = hv_iternext (hv)))
506	{	698	{
507	hes [i++] = he;	699	hes [i++] = he;
…		…
576	// encode objects, arrays and special \0=false and \1=true values.	768	// encode objects, arrays and special \0=false and \1=true values.
577	static void	769	static void
578	encode_rv (enc_t enc, SV sv)	770	encode_rv (enc_t enc, SV sv)
579	{	771	{
580	svtype svt;	772	svtype svt;
		773	GV *method;
581		774
582	SvGETMAGIC (sv);	775	SvGETMAGIC (sv);
583	svt = SvTYPE (sv);	776	svt = SvTYPE (sv);
584		777
585	if (expect_false (SvOBJECT (sv)))	778	if (expect_false (SvOBJECT (sv)))
586	{	779	{
587	HV *stash = !JSON_SLOW \|\| json_boolean_stash	780	HV *stash = SvSTASH (sv);
588	? json_boolean_stash
589	: gv_stashpv ("JSON::XS::Boolean", 1);
590		781
591	if (SvSTASH (sv) == stash)	782	if (stash == bool_stash)
592	{	783	{
593	if (SvIV (sv))
594	encode_str (enc, "true", 4, 0);	784	if (SvIV (sv)) encode_str (enc, "true" , 4, 0);
595	else
596	encode_str (enc, "false", 5, 0);	785	else encode_str (enc, "false", 5, 0);
597	}	786	}
		787	else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
		788	{
		789	int count;
		790	dSP;
		791
		792	ENTER; SAVETMPS;
		793	PUSHMARK (SP);
		794	EXTEND (SP, 2);
		795	// we re-bless the reference to get overload and other niceties right
		796	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		797	PUSHs (sv_json);
		798
		799	PUTBACK;
		800	count = call_sv ((SV *)GvCV (method), G_ARRAY);
		801	SPAGAIN;
		802
		803	// catch this surprisingly common error
		804	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		805	croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		806
		807	encode_ch (enc, '(');
		808	encode_ch (enc, '"');
		809	encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
		810	encode_ch (enc, '"');
		811	encode_ch (enc, ')');
		812	encode_ch (enc, '[');
		813
		814	if (count)
		815	{
		816	int i;
		817
		818	for (i = 0; i < count - 1; ++i)
		819	{
		820	encode_sv (enc, SP[i + 1 - count]);
		821	encode_ch (enc, ',');
		822	}
		823
		824	encode_sv (enc, TOPs);
		825	SP -= count;
		826	}
		827
		828	encode_ch (enc, ']');
		829
		830	FREETMPS; LEAVE;
		831	}
		832	else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
		833	{
		834	dSP;
		835
		836	ENTER; SAVETMPS;
		837	PUSHMARK (SP);
		838	// we re-bless the reference to get overload and other niceties right
		839	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		840
		841	// calling with G_SCALAR ensures that we always get a 1 return value
		842	PUTBACK;
		843	call_sv ((SV *)GvCV (method), G_SCALAR);
		844	SPAGAIN;
		845
		846	// catch this surprisingly common error
		847	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		848	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		849
		850	sv = POPs;
		851	PUTBACK;
		852
		853	encode_sv (enc, sv);
		854
		855	FREETMPS; LEAVE;
		856	}
		857	else if (enc->json.flags & F_ALLOW_BLESSED)
		858	encode_str (enc, "null", 4, 0);
598	else	859	else
599	{
600	#if 0
601	if (0 && sv_derived_from (rv, "JSON::Literal"))
602	{
603	// not yet
604	}
605	#endif
606	if (enc->json.flags & F_CONV_BLESSED)
607	{
608	// we re-bless the reference to get overload and other niceties right
609	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
610
611	if (to_json)
612	{
613	dSP;
614
615	ENTER; SAVETMPS; PUSHMARK (SP);
616	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
617
618	// calling with G_SCALAR ensures that we always get a 1 return value
619	PUTBACK;
620	call_sv ((SV *)GvCV (to_json), G_SCALAR);
621	SPAGAIN;
622
623	// catch this surprisingly common error
624	if (SvROK (TOPs) && SvRV (TOPs) == sv)
625	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
626
627	sv = POPs;
628	PUTBACK;
629
630	encode_sv (enc, sv);
631
632	FREETMPS; LEAVE;
633	}
634	else if (enc->json.flags & F_ALLOW_BLESSED)
635	encode_str (enc, "null", 4, 0);
636	else
637	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
638	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
639	}
640	else if (enc->json.flags & F_ALLOW_BLESSED)
641	encode_str (enc, "null", 4, 0);
642	else
643	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	860	croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
644	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	861	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
645	}
646	}	862	}
647	else if (svt == SVt_PVHV)	863	else if (svt == SVt_PVHV)
648	encode_hv (enc, (HV *)sv);	864	encode_hv (enc, (HV *)sv);
649	else if (svt == SVt_PVAV)	865	else if (svt == SVt_PVAV)
650	encode_av (enc, (AV *)sv);	866	encode_av (enc, (AV *)sv);
651	else if (svt < SVt_PVAV)	867	else if (svt < SVt_PVAV)
652	{	868	{
653	STRLEN len = 0;	869	int bool_type = ref_bool_type (sv);
654	char *pv = svt ? SvPV (sv, len) : 0;
655		870
656	if (len == 1 && *pv == '1')	871	if (bool_type == 1)
657	encode_str (enc, "true", 4, 0);	872	encode_str (enc, "true", 4, 0);
658	else if (len == 1 && *pv == '0')	873	else if (bool_type == 0)
659	encode_str (enc, "false", 5, 0);	874	encode_str (enc, "false", 5, 0);
660	else if (enc->json.flags & F_ALLOW_UNKNOWN)	875	else if (enc->json.flags & F_ALLOW_UNKNOWN)
661	encode_str (enc, "null", 4, 0);	876	encode_str (enc, "null", 4, 0);
662	else	877	else
663	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	878	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
…		…
726	}	941	}
727	else	942	else
728	{	943	{
729	// large integer, use the (rather slow) snprintf way.	944	// large integer, use the (rather slow) snprintf way.
730	need (enc, IVUV_MAXCHARS);	945	need (enc, IVUV_MAXCHARS);
731	enc->cur +=	946	enc->cur +=
732	SvIsUV(sv)	947	SvIsUV(sv)
733	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	948	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
734	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	949	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
735	}	950	}
736	}	951	}
737	else if (SvROK (sv))	952	else if (SvROK (sv))
738	encode_rv (enc, SvRV (sv));	953	encode_rv (enc, SvRV (sv));
739	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)	954	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
740	encode_str (enc, "null", 4, 0);	955	encode_str (enc, "null", 4, 0);
741	else	956	else
742	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	957	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
743	SvPV_nolen (sv), SvFLAGS (sv));	958	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
744	}	959	}
745		960
746	static SV *	961	static SV *
747	encode_json (SV scalar, JSON json)	962	encode_json (SV scalar, JSON json)
748	{	963	{
749	enc_t enc;	964	enc_t enc;
750		965
751	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	966	if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
752	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	967	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
753		968
754	enc.json = *json;	969	enc.json = *json;
755	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	970	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
756	enc.cur = SvPVX (enc.sv);	971	enc.cur = SvPVX (enc.sv);
…		…
963	cur++ = dec_cur++;	1178	cur++ = dec_cur++;
964	while (--clen);	1179	while (--clen);
965		1180
966	utf8 = 1;	1181	utf8 = 1;
967	}	1182	}
		1183	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1184	*cur++ = ch;
968	else	1185	else
969	{	1186	{
970	--dec_cur;	1187	--dec_cur;
971		1188
972	if (!ch)	1189	if (!ch)
…		…
982		1199
983	if (sv)	1200	if (sv)
984	{	1201	{
985	STRLEN cur = SvCUR (sv);	1202	STRLEN cur = SvCUR (sv);
986		1203
987	if (SvLEN (sv) <= cur + len)	1204	if (SvLEN (sv) - cur <= len)
988	SvGROW (sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	1205	json_sv_grow (sv, cur, len);
989		1206
990	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	1207	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
991	SvCUR_set (sv, SvCUR (sv) + len);	1208	SvCUR_set (sv, SvCUR (sv) + len);
992	}	1209	}
993	else	1210	else
…		…
1117	}	1334	}
1118		1335
1119	len -= *start == '-' ? 1 : 0;	1336	len -= *start == '-' ? 1 : 0;
1120		1337
1121	// does not fit into IV or UV, try NV	1338	// does not fit into IV or UV, try NV
1122	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)	1339	if (len <= NV_DIG)
1123	#if defined (LDBL_DIG)
1124	\|\| (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
1125	#endif
1126	)
1127	// fits into NV without loss of precision	1340	// fits into NV without loss of precision
1128	return newSVnv (Atof (start));	1341	return newSVnv (json_atof (start));
1129		1342
1130	// everything else fails, convert it to a string	1343	// everything else fails, convert it to a string
1131	return newSVpvn (start, dec->cur - start);	1344	return newSVpvn (start, dec->cur - start);
1132	}	1345	}
1133		1346
1134	// loss of precision here	1347	// loss of precision here
1135	return newSVnv (Atof (start));	1348	return newSVnv (json_atof (start));
1136		1349
1137	fail:	1350	fail:
1138	return 0;	1351	return 0;
1139	}	1352	}
1140		1353
…		…
1164	if (*dec->cur == ']')	1377	if (*dec->cur == ']')
1165	{	1378	{
1166	++dec->cur;	1379	++dec->cur;
1167	break;	1380	break;
1168	}	1381	}
1169		1382
1170	if (*dec->cur != ',')	1383	if (*dec->cur != ',')
1171	ERR (", or ] expected while parsing array");	1384	ERR (", or ] expected while parsing array");
1172		1385
1173	++dec->cur;	1386	++dec->cur;
1174		1387
…		…
1298		1511
1299	hv_iterinit (hv);	1512	hv_iterinit (hv);
1300	he = hv_iternext (hv);	1513	he = hv_iternext (hv);
1301	hv_iterinit (hv);	1514	hv_iterinit (hv);
1302		1515
1303	// the next line creates a mortal sv each time its called.	1516	// the next line creates a mortal sv each time it's called.
1304	// might want to optimise this for common cases.	1517	// might want to optimise this for common cases.
1305	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);	1518	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1306		1519
1307	if (cb)	1520	if (cb)
1308	{	1521	{
1309	dSP;	1522	dSP;
1310	int count;	1523	int count;
1311		1524
1312	ENTER; SAVETMPS; PUSHMARK (SP);	1525	ENTER; SAVETMPS;
		1526	PUSHMARK (SP);
1313	XPUSHs (HeVAL (he));	1527	XPUSHs (HeVAL (he));
		1528	sv_2mortal (sv);
1314		1529
1315	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1530	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1316		1531
1317	if (count == 1)	1532	if (count == 1)
1318	{	1533	{
1319	sv = newSVsv (POPs);	1534	sv = newSVsv (POPs);
1320	FREETMPS; LEAVE;	1535	FREETMPS; LEAVE;
1321	return sv;	1536	return sv;
1322	}	1537	}
		1538	else if (count)
		1539	croak ("filter_json_single_key_object callbacks must not return more than one scalar");
1323		1540
		1541	SvREFCNT_inc (sv);
1324	FREETMPS; LEAVE;	1542	FREETMPS; LEAVE;
1325	}	1543	}
1326	}	1544	}
1327		1545
1328	if (dec->json.cb_object)	1546	if (dec->json.cb_object)
1329	{	1547	{
1330	dSP;	1548	dSP;
1331	int count;	1549	int count;
1332		1550
1333	ENTER; SAVETMPS; PUSHMARK (SP);	1551	ENTER; SAVETMPS;
		1552	PUSHMARK (SP);
1334	XPUSHs (sv_2mortal (sv));	1553	XPUSHs (sv_2mortal (sv));
1335		1554
1336	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1555	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1337		1556
1338	if (count == 1)	1557	if (count == 1)
1339	{	1558	{
1340	sv = newSVsv (POPs);	1559	sv = newSVsv (POPs);
1341	FREETMPS; LEAVE;	1560	FREETMPS; LEAVE;
1342	return sv;	1561	return sv;
1343	}	1562	}
		1563	else if (count)
		1564	croak ("filter_json_object callbacks must not return more than one scalar");
1344		1565
1345	SvREFCNT_inc (sv);	1566	SvREFCNT_inc (sv);
1346	FREETMPS; LEAVE;	1567	FREETMPS; LEAVE;
1347	}	1568	}
1348	}	1569	}
…		…
1354	DEC_DEC_DEPTH;	1575	DEC_DEC_DEPTH;
1355	return 0;	1576	return 0;
1356	}	1577	}
1357		1578
1358	static SV *	1579	static SV *
		1580	decode_tag (dec_t *dec)
		1581	{
		1582	SV *tag = 0;
		1583	SV *val = 0;
		1584
		1585	if (!(dec->json.flags & F_ALLOW_TAGS))
		1586	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1587
		1588	++dec->cur;
		1589
		1590	decode_ws (dec);
		1591
		1592	tag = decode_sv (dec);
		1593	if (!tag)
		1594	goto fail;
		1595
		1596	if (!SvPOK (tag))
		1597	ERR ("malformed JSON string, (tag) must be a string");
		1598
		1599	decode_ws (dec);
		1600
		1601	if (*dec->cur != ')')
		1602	ERR (") expected after tag");
		1603
		1604	++dec->cur;
		1605
		1606	decode_ws (dec);
		1607
		1608	val = decode_sv (dec);
		1609	if (!val)
		1610	goto fail;
		1611
		1612	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1613	ERR ("malformed JSON string, tag value must be an array");
		1614
		1615	{
		1616	AV av = (AV )SvRV (val);
		1617	int i, len = av_len (av) + 1;
		1618	HV *stash = gv_stashsv (tag, 0);
		1619	SV *sv;
		1620
		1621	if (!stash)
		1622	ERR ("cannot decode perl-object (package does not exist)");
		1623
		1624	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1625
		1626	if (!method)
		1627	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1628
		1629	dSP;
		1630
		1631	ENTER; SAVETMPS;
		1632	PUSHMARK (SP);
		1633	EXTEND (SP, len + 2);
		1634	// we re-bless the reference to get overload and other niceties right
		1635	PUSHs (tag);
		1636	PUSHs (sv_json);
		1637
		1638	for (i = 0; i < len; ++i)
		1639	PUSHs (*av_fetch (av, i, 1));
		1640
		1641	PUTBACK;
		1642	call_sv ((SV *)GvCV (method), G_SCALAR);
		1643	SPAGAIN;
		1644
		1645	SvREFCNT_dec (tag);
		1646	SvREFCNT_dec (val);
		1647	sv = SvREFCNT_inc (POPs);
		1648
		1649	PUTBACK;
		1650
		1651	FREETMPS; LEAVE;
		1652
		1653	return sv;
		1654	}
		1655
		1656	fail:
		1657	SvREFCNT_dec (tag);
		1658	SvREFCNT_dec (val);
		1659	return 0;
		1660	}
		1661
		1662	static SV *
1359	decode_sv (dec_t *dec)	1663	decode_sv (dec_t *dec)
1360	{	1664	{
1361	// the beauty of JSON: you need exactly one character lookahead	1665	// the beauty of JSON: you need exactly one character lookahead
1362	// to parse everything.	1666	// to parse everything.
1363	switch (*dec->cur)	1667	switch (*dec->cur)
1364	{	1668	{
1365	case '"': ++dec->cur; return decode_str (dec);	1669	case '"': ++dec->cur; return decode_str (dec);
1366	case '[': ++dec->cur; return decode_av (dec);	1670	case '[': ++dec->cur; return decode_av (dec);
1367	case '{': ++dec->cur; return decode_hv (dec);	1671	case '{': ++dec->cur; return decode_hv (dec);
		1672	case '(': return decode_tag (dec);
1368		1673
1369	case '-':	1674	case '-':
1370	case '0': case '1': case '2': case '3': case '4':	1675	case '0': case '1': case '2': case '3': case '4':
1371	case '5': case '6': case '7': case '8': case '9':	1676	case '5': case '6': case '7': case '8': case '9':
1372	return decode_num (dec);	1677	return decode_num (dec);
1373		1678
		1679	case 'f':
		1680	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
		1681	{
		1682	dec->cur += 5;
		1683
		1684	if (expect_false (!dec->json.v_false))
		1685	dec->json.v_false = GET_BOOL (false);
		1686
		1687	return newSVsv (dec->json.v_false);
		1688	}
		1689	else
		1690	ERR ("'false' expected");
		1691
		1692	break;
		1693
1374	case 't':	1694	case 't':
1375	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1695	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1376	{	1696	{
1377	dec->cur += 4;	1697	dec->cur += 4;
1378	#if JSON_SLOW	1698
1379	json_true = get_bool ("JSON::XS::true");	1699	if (expect_false (!dec->json.v_true))
1380	#endif	1700	dec->json.v_true = GET_BOOL (true);
		1701
1381	return newSVsv (json_true);	1702	return newSVsv (dec->json.v_true);
1382	}	1703	}
1383	else	1704	else
1384	ERR ("'true' expected");	1705	ERR ("'true' expected");
1385
1386	break;
1387
1388	case 'f':
1389	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1390	{
1391	dec->cur += 5;
1392	#if JSON_SLOW
1393	json_false = get_bool ("JSON::XS::false");
1394	#endif
1395	return newSVsv (json_false);
1396	}
1397	else
1398	ERR ("'false' expected");
1399		1706
1400	break;	1707	break;
1401		1708
1402	case 'n':	1709	case 'n':
1403	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))	1710	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
…		…
1409	ERR ("'null' expected");	1716	ERR ("'null' expected");
1410		1717
1411	break;	1718	break;
1412		1719
1413	default:	1720	default:
1414	ERR ("malformed JSON string, neither array, object, number, string or atom");	1721	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1415	break;	1722	break;
1416	}	1723	}
1417		1724
1418	fail:	1725	fail:
1419	return 0;	1726	return 0;
1420	}	1727	}
1421		1728
1422	static SV *	1729	static SV *
1423	decode_json (SV string, JSON json, char **offset_return)	1730	decode_json (SV string, JSON json, STRLEN *offset_return)
1424	{	1731	{
1425	dec_t dec;	1732	dec_t dec;
1426	SV *sv;	1733	SV *sv;
1427		1734
1428	/* work around bugs in 5.10 where manipulating magic values	1735	/* work around bugs in 5.10 where manipulating magic values
1429	* will perl ignore the magic in subsequent accesses	1736	* makes perl ignore the magic in subsequent accesses.
		1737	* also make a copy of non-PV values, to get them into a clean
		1738	* state (SvPV should do that, but it's buggy, see below).
		1739	*
		1740	* SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
		1741	* as reported by Reini Urban.
1430	*/	1742	*/
1431	/SvGETMAGIC (string);/	1743	/SvGETMAGIC (string);/
1432	if (SvMAGICAL (string))	1744	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
1433	string = sv_2mortal (newSVsv (string));	1745	string = sv_2mortal (newSVsv (string));
1434		1746
1435	SvUPGRADE (string, SVt_PV);	1747	SvUPGRADE (string, SVt_PV);
1436		1748
1437	/* work around a bug in perl 5.10, which causes SvCUR to fail an	1749	/* work around a bug in perl 5.10, which causes SvCUR to fail an
…		…
1454	if (offset > json->max_size && json->max_size)	1766	if (offset > json->max_size && json->max_size)
1455	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	1767	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1456	(unsigned long)SvCUR (string), (unsigned long)json->max_size);	1768	(unsigned long)SvCUR (string), (unsigned long)json->max_size);
1457	}	1769	}
1458		1770
1459	if (json->flags & F_UTF8)	1771	if (DECODE_WANTS_OCTETS (json))
1460	sv_utf8_downgrade (string, 0);	1772	sv_utf8_downgrade (string, 0);
1461	else	1773	else
1462	sv_utf8_upgrade (string);	1774	sv_utf8_upgrade (string);
1463		1775
1464	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1776	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
…		…
1476		1788
1477	decode_ws (&dec);	1789	decode_ws (&dec);
1478	sv = decode_sv (&dec);	1790	sv = decode_sv (&dec);
1479		1791
1480	if (offset_return)	1792	if (offset_return)
1481	*offset_return = dec.cur;	1793	*offset_return = dec.cur - SvPVX (string);
1482		1794	else if (sv)
1483	if (!(offset_return \|\| !sv))
1484	{	1795	{
1485	// check for trailing garbage	1796	// check for trailing garbage
1486	decode_ws (&dec);	1797	decode_ws (&dec);
1487		1798
1488	if (*dec.cur)	1799	if (*dec.cur)
…		…
1506	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1817	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1507	LEAVE;	1818	LEAVE;
1508		1819
1509	croak ("%s, at character offset %d (before \"%s\")",	1820	croak ("%s, at character offset %d (before \"%s\")",
1510	dec.err,	1821	dec.err,
1511	ptr_to_index (string, dec.cur),	1822	(int)ptr_to_index (string, dec.cur),
1512	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1823	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1513	}	1824	}
1514		1825
1515	sv = sv_2mortal (sv);	1826	sv = sv_2mortal (sv);
1516		1827
1517	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1828	if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1518	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1829	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1519		1830
1520	return sv;	1831	return sv;
1521	}	1832	}
1522		1833
…		…
1525		1836
1526	static void	1837	static void
1527	incr_parse (JSON *self)	1838	incr_parse (JSON *self)
1528	{	1839	{
1529	const char *p = SvPVX (self->incr_text) + self->incr_pos;	1840	const char *p = SvPVX (self->incr_text) + self->incr_pos;
		1841
		1842	// the state machine here is a bit convoluted and could be simplified a lot
		1843	// but this would make it slower, so...
1530		1844
1531	for (;;)	1845	for (;;)
1532	{	1846	{
1533	//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	1847	//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
1534	switch (self->incr_mode)	1848	switch (self->incr_mode)
1535	{	1849	{
1536	// only used for intiial whitespace skipping	1850	// only used for initial whitespace skipping
1537	case INCR_M_WS:	1851	case INCR_M_WS:
1538	for (;;)	1852	for (;;)
1539	{	1853	{
1540	if (*p > 0x20)	1854	if (*p > 0x20)
1541	{	1855	{
		1856	if (*p == '#')
		1857	{
		1858	self->incr_mode = INCR_M_C0;
		1859	goto incr_m_c;
		1860	}
		1861	else
		1862	{
1542	self->incr_mode = INCR_M_JSON;	1863	self->incr_mode = INCR_M_JSON;
1543	goto incr_m_json;	1864	goto incr_m_json;
		1865	}
1544	}	1866	}
1545	else if (!*p)	1867	else if (!*p)
1546	goto interrupt;	1868	goto interrupt;
1547		1869
1548	++p;	1870	++p;
…		…
1554	goto interrupt;	1876	goto interrupt;
1555		1877
1556	++p;	1878	++p;
1557	self->incr_mode = INCR_M_STR;	1879	self->incr_mode = INCR_M_STR;
1558	goto incr_m_str;	1880	goto incr_m_str;
		1881
		1882	// inside #-style comments
		1883	case INCR_M_C0:
		1884	case INCR_M_C1:
		1885	incr_m_c:
		1886	for (;;)
		1887	{
		1888	if (*p == '\n')
		1889	{
		1890	self->incr_mode = self->incr_mode == INCR_M_C0 ? INCR_M_WS : INCR_M_JSON;
		1891	break;
		1892	}
		1893	else if (!*p)
		1894	goto interrupt;
		1895
		1896	++p;
		1897	}
		1898
		1899	break;
1559		1900
1560	// inside a string	1901	// inside a string
1561	case INCR_M_STR:	1902	case INCR_M_STR:
1562	incr_m_str:	1903	incr_m_str:
1563	for (;;)	1904	for (;;)
…		…
1614	self->incr_mode = INCR_M_STR;	1955	self->incr_mode = INCR_M_STR;
1615	goto incr_m_str;	1956	goto incr_m_str;
1616		1957
1617	case '[':	1958	case '[':
1618	case '{':	1959	case '{':
		1960	case '(':
1619	if (++self->incr_nest > self->max_depth)	1961	if (++self->incr_nest > self->max_depth)
1620	croak (ERR_NESTING_EXCEEDED);	1962	croak (ERR_NESTING_EXCEEDED);
1621	break;	1963	break;
1622		1964
1623	case ']':	1965	case ']':
1624	case '}':	1966	case '}':
1625	if (--self->incr_nest <= 0)	1967	if (--self->incr_nest <= 0)
1626	goto interrupt;	1968	goto interrupt;
		1969	break;
		1970
		1971	case ')':
		1972	--self->incr_nest;
		1973	break;
		1974
		1975	case '#':
		1976	self->incr_mode = INCR_M_C1;
		1977	goto incr_m_c;
1627	}	1978	}
1628	}	1979	}
1629	}	1980	}
1630		1981
1631	modechange:	1982	modechange:
1632	;	1983	;
1633	}	1984	}
1634		1985
1635	interrupt:	1986	interrupt:
1636	self->incr_pos = p - SvPVX (self->incr_text);	1987	self->incr_pos = p - SvPVX (self->incr_text);
		1988	//printf ("interrupt<%.*s>\n", self->incr_pos, SvPVX(self->incr_text));//D
1637	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D	1989	//printf ("return pos %d mode %d nest %d\n", self->incr_pos, self->incr_mode, self->incr_nest);//D
1638	}	1990	}
1639		1991
1640	/////////////////////////////////////////////////////////////////////////////	1992	/////////////////////////////////////////////////////////////////////////////
1641	// XS interface functions	1993	// XS interface functions
…		…
1651	i >= '0' && i <= '9' ? i - '0'	2003	i >= '0' && i <= '9' ? i - '0'
1652	: i >= 'a' && i <= 'f' ? i - 'a' + 10	2004	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1653	: i >= 'A' && i <= 'F' ? i - 'A' + 10	2005	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1654	: -1;	2006	: -1;
1655		2007
1656	json_stash = gv_stashpv ("JSON::XS" , 1);	2008	json_stash = gv_stashpv ("JSON::XS" , 1);
1657	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	2009	bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1658
1659	json_true = get_bool ("JSON::XS::true");
1660	json_false = get_bool ("JSON::XS::false");	2010	bool_false = get_bool ("Types::Serialiser::false");
		2011	bool_true = get_bool ("Types::Serialiser::true");
		2012
		2013	sv_json = newSVpv ("JSON", 0);
		2014	SvREADONLY_on (sv_json);
1661		2015
1662	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */	2016	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1663	}	2017	}
1664		2018
1665	PROTOTYPES: DISABLE	2019	PROTOTYPES: DISABLE
1666		2020
1667	void CLONE (...)	2021	void CLONE (...)
1668	CODE:	2022	CODE:
		2023	// as long as these writes are atomic, the race should not matter
		2024	// as existing threads either already use 0, or use the old value,
		2025	// which is sitll correct for the initial thread.
1669	json_stash = 0;	2026	json_stash = 0;
1670	json_boolean_stash = 0;	2027	bool_stash = 0;
		2028	bool_false = 0;
		2029	bool_true = 0;
1671		2030
1672	void new (char *klass)	2031	void new (char *klass)
1673	PPCODE:	2032	PPCODE:
1674	{	2033	{
1675	SV *pv = NEWSV (0, sizeof (JSON));	2034	SV *pv = NEWSV (0, sizeof (JSON));
1676	SvPOK_only (pv);	2035	SvPOK_only (pv);
1677	json_init ((JSON *)SvPVX (pv));	2036	json_init ((JSON *)SvPVX (pv));
1678	XPUSHs (sv_2mortal (sv_bless (	2037	XPUSHs (sv_2mortal (sv_bless (
1679	newRV_noinc (pv),	2038	newRV_noinc (pv),
1680	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	2039	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
1681	)));	2040	)));
1682	}	2041	}
		2042
		2043	void boolean_values (JSON self, SV v_false = 0, SV *v_true = 0)
		2044	PPCODE:
		2045	self->v_false = newSVsv (v_false);
		2046	self->v_true = newSVsv (v_true);
		2047	XPUSHs (ST (0));
		2048
		2049	void get_boolean_values (JSON *self)
		2050	PPCODE:
		2051	if (self->v_false && self->v_true)
		2052	{
		2053	EXTEND (SP, 2);
		2054	PUSHs (self->v_false);
		2055	PUSHs (self->v_true);
		2056	}
1683		2057
1684	void ascii (JSON *self, int enable = 1)	2058	void ascii (JSON *self, int enable = 1)
1685	ALIAS:	2059	ALIAS:
1686	ascii = F_ASCII	2060	ascii = F_ASCII
1687	latin1 = F_LATIN1	2061	latin1 = F_LATIN1
…		…
1695	shrink = F_SHRINK	2069	shrink = F_SHRINK
1696	allow_blessed = F_ALLOW_BLESSED	2070	allow_blessed = F_ALLOW_BLESSED
1697	convert_blessed = F_CONV_BLESSED	2071	convert_blessed = F_CONV_BLESSED
1698	relaxed = F_RELAXED	2072	relaxed = F_RELAXED
1699	allow_unknown = F_ALLOW_UNKNOWN	2073	allow_unknown = F_ALLOW_UNKNOWN
		2074	allow_tags = F_ALLOW_TAGS
1700	PPCODE:	2075	PPCODE:
1701	{	2076	{
1702	if (enable)	2077	if (enable)
1703	self->flags \|= ix;	2078	self->flags \|= ix;
1704	else	2079	else
…		…
1720	get_shrink = F_SHRINK	2095	get_shrink = F_SHRINK
1721	get_allow_blessed = F_ALLOW_BLESSED	2096	get_allow_blessed = F_ALLOW_BLESSED
1722	get_convert_blessed = F_CONV_BLESSED	2097	get_convert_blessed = F_CONV_BLESSED
1723	get_relaxed = F_RELAXED	2098	get_relaxed = F_RELAXED
1724	get_allow_unknown = F_ALLOW_UNKNOWN	2099	get_allow_unknown = F_ALLOW_UNKNOWN
		2100	get_allow_tags = F_ALLOW_TAGS
1725	PPCODE:	2101	PPCODE:
1726	XPUSHs (boolSV (self->flags & ix));	2102	XPUSHs (boolSV (self->flags & ix));
1727		2103
1728	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)	2104	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1729	PPCODE:	2105	PPCODE:
…		…
1757	}	2133	}
1758		2134
1759	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2135	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1760	PPCODE:	2136	PPCODE:
1761	{	2137	{
1762	if (!self->cb_sk_object)	2138	if (!self->cb_sk_object)
1763	self->cb_sk_object = newHV ();	2139	self->cb_sk_object = newHV ();
1764		2140
1765	if (SvOK (cb))	2141	if (SvOK (cb))
1766	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2142	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1767	else	2143	else
…		…
1778	XPUSHs (ST (0));	2154	XPUSHs (ST (0));
1779	}	2155	}
1780		2156
1781	void encode (JSON self, SV scalar)	2157	void encode (JSON self, SV scalar)
1782	PPCODE:	2158	PPCODE:
1783	XPUSHs (encode_json (scalar, self));	2159	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2160	XPUSHs (scalar);
1784		2161
1785	void decode (JSON self, SV jsonstr)	2162	void decode (JSON self, SV jsonstr)
1786	PPCODE:	2163	PPCODE:
1787	XPUSHs (decode_json (jsonstr, self, 0));	2164	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2165	XPUSHs (jsonstr);
1788		2166
1789	void decode_prefix (JSON self, SV jsonstr)	2167	void decode_prefix (JSON self, SV jsonstr)
1790	PPCODE:	2168	PPCODE:
1791	{	2169	{
1792	char *offset;	2170	SV *sv;
		2171	STRLEN offset;
		2172	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1793	EXTEND (SP, 2);	2173	EXTEND (SP, 2);
1794	PUSHs (decode_json (jsonstr, self, &offset));	2174	PUSHs (sv);
1795	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));	2175	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
1796	}	2176	}
1797		2177
1798	void incr_parse (JSON self, SV jsonstr = 0)	2178	void incr_parse (JSON self, SV jsonstr = 0)
1799	PPCODE:	2179	PPCODE:
1800	{	2180	{
1801	if (!self->incr_text)	2181	if (!self->incr_text)
1802	self->incr_text = newSVpvn ("", 0);	2182	self->incr_text = newSVpvn ("", 0);
		2183
		2184	/* if utf8-ness doesn't match the decoder, need to upgrade/downgrade */
		2185	if (!DECODE_WANTS_OCTETS (self) == !SvUTF8 (self->incr_text))
		2186	if (DECODE_WANTS_OCTETS (self))
		2187	{
		2188	if (self->incr_pos)
		2189	self->incr_pos = utf8_length ((U8 *)SvPVX (self->incr_text),
		2190	(U8 *)SvPVX (self->incr_text) + self->incr_pos);
		2191
		2192	sv_utf8_downgrade (self->incr_text, 0);
		2193	}
		2194	else
		2195	{
		2196	sv_utf8_upgrade (self->incr_text);
		2197
		2198	if (self->incr_pos)
		2199	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
		2200	- (U8 *)SvPVX (self->incr_text);
		2201	}
1803		2202
1804	// append data, if any	2203	// append data, if any
1805	if (jsonstr)	2204	if (jsonstr)
1806	{	2205	{
		2206	/* make sure both strings have same encoding */
		2207	if (SvUTF8 (jsonstr) != SvUTF8 (self->incr_text))
1807	if (SvUTF8 (jsonstr))	2208	if (SvUTF8 (jsonstr))
		2209	sv_utf8_downgrade (jsonstr, 0);
1808	{	2210	else
1809	if (!SvUTF8 (self->incr_text))
1810	{
1811	/* utf-8-ness differs, need to upgrade */
1812	sv_utf8_upgrade (self->incr_text);
1813
1814	if (self->incr_pos)
1815	self->incr_pos = utf8_hop ((U8 *)SvPVX (self->incr_text), self->incr_pos)
1816	- (U8 *)SvPVX (self->incr_text);
1817	}
1818	}
1819	else if (SvUTF8 (self->incr_text))
1820	sv_utf8_upgrade (jsonstr);	2211	sv_utf8_upgrade (jsonstr);
1821		2212
		2213	/* and then just blindly append */
1822	{	2214	{
1823	STRLEN len;	2215	STRLEN len;
1824	const char *str = SvPV (jsonstr, len);	2216	const char *str = SvPV (jsonstr, len);
1825	STRLEN cur = SvCUR (self->incr_text);	2217	STRLEN cur = SvCUR (self->incr_text);
1826		2218
1827	if (SvLEN (self->incr_text) <= cur + len)	2219	if (SvLEN (self->incr_text) - cur <= len)
1828	SvGROW (self->incr_text, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	2220	json_sv_grow (self->incr_text, cur, len);
1829		2221
1830	Move (str, SvEND (self->incr_text), len, char);	2222	Move (str, SvEND (self->incr_text), len, char);
1831	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);	2223	SvCUR_set (self->incr_text, SvCUR (self->incr_text) + len);
1832	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there	2224	*SvEND (self->incr_text) = 0; // this should basically be a nop, too, but make sure it's there
1833	}	2225	}
1834	}	2226	}
1835		2227
1836	if (GIMME_V != G_VOID)	2228	if (GIMME_V != G_VOID)
1837	do	2229	do
1838	{	2230	{
		2231	SV *sv;
1839	char *offset;	2232	STRLEN offset;
1840		2233
1841	if (!INCR_DONE (self))	2234	if (!INCR_DONE (self))
1842	{	2235	{
1843	incr_parse (self);	2236	incr_parse (self);
1844		2237
1845	if (self->incr_pos > self->max_size && self->max_size)	2238	if (self->incr_pos > self->max_size && self->max_size)
1846	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	2239	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1847	(unsigned long)self->incr_pos, (unsigned long)self->max_size);	2240	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
1848		2241
1849	if (!INCR_DONE (self))	2242	if (!INCR_DONE (self))
		2243	{
		2244	// as an optimisation, do not accumulate white space in the incr buffer
		2245	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2246	{
		2247	self->incr_pos = 0;
		2248	SvCUR_set (self->incr_text, 0);
		2249	}
		2250
1850	break;	2251	break;
		2252	}
1851	}	2253	}
1852		2254
1853	XPUSHs (decode_json (self->incr_text, self, &offset));	2255	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2256	XPUSHs (sv);
1854		2257
1855	self->incr_pos -= offset - SvPVX (self->incr_text);	2258	self->incr_pos -= offset;
1856	self->incr_nest = 0;	2259	self->incr_nest = 0;
1857	self->incr_mode = 0;	2260	self->incr_mode = 0;
1858		2261
1859	sv_chop (self->incr_text, offset);	2262	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
1860	}	2263	}
1861	while (GIMME_V == G_ARRAY);	2264	while (GIMME_V == G_ARRAY);
1862	}	2265	}
1863		2266
1864	SV incr_text (JSON self)	2267	SV incr_text (JSON self)
…		…
1895	self->incr_mode = 0;	2298	self->incr_mode = 0;
1896	}	2299	}
1897		2300
1898	void DESTROY (JSON *self)	2301	void DESTROY (JSON *self)
1899	CODE:	2302	CODE:
		2303	SvREFCNT_dec (self->v_false);
		2304	SvREFCNT_dec (self->v_true);
1900	SvREFCNT_dec (self->cb_sk_object);	2305	SvREFCNT_dec (self->cb_sk_object);
1901	SvREFCNT_dec (self->cb_object);	2306	SvREFCNT_dec (self->cb_object);
1902	SvREFCNT_dec (self->incr_text);	2307	SvREFCNT_dec (self->incr_text);
1903		2308
1904	PROTOTYPES: ENABLE	2309	PROTOTYPES: ENABLE
1905		2310
1906	void encode_json (SV *scalar)	2311	void encode_json (SV *scalar)
1907	ALIAS:
1908	to_json_ = 0
1909	encode_json = F_UTF8
1910	PPCODE:	2312	PPCODE:
1911	{	2313	{
1912	JSON json;	2314	JSON json;
1913	json_init (&json);	2315	json_init (&json);
1914	json.flags \|= ix;	2316	json.flags \|= F_UTF8;
1915	XPUSHs (encode_json (scalar, &json));	2317	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2318	XPUSHs (scalar);
1916	}	2319	}
1917		2320
1918	void decode_json (SV *jsonstr)	2321	void decode_json (SV *jsonstr)
1919	ALIAS:
1920	from_json_ = 0
1921	decode_json = F_UTF8
1922	PPCODE:	2322	PPCODE:
1923	{	2323	{
1924	JSON json;	2324	JSON json;
1925	json_init (&json);	2325	json_init (&json);
1926	json.flags \|= ix;	2326	json.flags \|= F_UTF8;
1927	XPUSHs (decode_json (jsonstr, &json, 0));	2327	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2328	XPUSHs (jsonstr);
1928	}	2329	}
1929		2330
1930

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Comparing JSON-XS/XS.xs (file contents): Revision 1.102 by root, Sat Oct 10 01:48:50 2009 UTC vs. Revision 1.134 by root, Thu Nov 15 20:13:03 2018 UTC

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Comparing JSON-XS/XS.xs (file contents):
Revision 1.102 by root, Sat Oct 10 01:48:50 2009 UTC vs.
Revision 1.134 by root, Thu Nov 15 20:13:03 2018 UTC