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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.110 by root, Wed Jun 1 13:01:09 2011 UTC vs.
Revision 1.130 by root, Sat Nov 26 06:09:29 2016 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 32 // initial scalar size to be allocated
…		…
67	#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?)"
68		81
69	#ifdef USE_ITHREADS	82	#ifdef USE_ITHREADS
70	# define JSON_SLOW 1	83	# define JSON_SLOW 1
71	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))	84	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))
		85	# define BOOL_STASH (bool_stash ? bool_stash : gv_stashpv ("Types::Serialiser::Boolean", 1))
72	#else	86	#else
73	# define JSON_SLOW 0	87	# define JSON_SLOW 0
74	# define JSON_STASH json_stash	88	# define JSON_STASH json_stash
		89	# define BOOL_STASH bool_stash
75	#endif	90	#endif
76		91
77	static HV json_stash, json_boolean_stash; // JSON::XS::	92	// the amount of HEs to allocate on the stack, when sorting keys
78	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_true, bool_false, *sv_json;
79		97
80	enum {	98	enum {
81	INCR_M_WS = 0, // initial whitespace skipping, must be 0	99	INCR_M_WS = 0, // initial whitespace skipping, must be 0
82	INCR_M_STR, // inside string	100	INCR_M_STR, // inside string
83	INCR_M_BS, // inside backslash	101	INCR_M_BS, // inside backslash
…		…
284	// a recursion depth of ten gives us >>500 bits	302	// a recursion depth of ten gives us >>500 bits
285	json_atof_scan1 (s, &accum, &expo, 0, 10);	303	json_atof_scan1 (s, &accum, &expo, 0, 10);
286		304
287	return neg ? -accum : accum;	305	return neg ? -accum : accum;
288	}	306	}
		307
		308	// target of scalar reference is bool? -1 == nope, 0 == false, 1 == true
		309	static int
		310	ref_bool_type (SV *sv)
		311	{
		312	svtype svt = SvTYPE (sv);
		313
		314	if (svt < SVt_PVAV)
		315	{
		316	STRLEN len = 0;
		317	char *pv = svt ? SvPV (sv, len) : 0;
		318
		319	if (len == 1)
		320	if (*pv == '1')
		321	return 1;
		322	else if (*pv == '0')
		323	return 0;
		324	}
		325
		326	return -1;
		327	}
		328
		329	// returns whether scalar is not a reference in the sense of allow_nonref
		330	static int
		331	json_nonref (SV *scalar)
		332	{
		333	if (!SvROK (scalar))
		334	return 1;
		335
		336	scalar = SvRV (scalar);
		337
		338	if (SvTYPE (scalar) >= SVt_PVMG)
		339	{
		340	if (SvSTASH (scalar) == bool_stash)
		341	return 1;
		342
		343	if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0)
		344	return 1;
		345	}
		346
		347	return 0;
		348	}
		349
289	/////////////////////////////////////////////////////////////////////////////	350	/////////////////////////////////////////////////////////////////////////////
290	// encoder	351	// encoder
291		352
292	// structure used for encoding JSON	353	// structure used for encoding JSON
293	typedef struct	354	typedef struct
…		…
301	} enc_t;	362	} enc_t;
302		363
303	INLINE void	364	INLINE void
304	need (enc_t *enc, STRLEN len)	365	need (enc_t *enc, STRLEN len)
305	{	366	{
306	if (expect_false (enc->cur + len >= enc->end))	367	if (expect_false ((uintptr_t)(enc->end - enc->cur) < len))
307	{	368	{
308	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	369	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
309	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	370	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
310	enc->cur = SvPVX (enc->sv) + cur;	371	enc->cur = SvPVX (enc->sv) + cur;
311	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	372	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
480		541
481	if (enc->indent >= enc->json.max_depth)	542	if (enc->indent >= enc->json.max_depth)
482	croak (ERR_NESTING_EXCEEDED);	543	croak (ERR_NESTING_EXCEEDED);
483		544
484	encode_ch (enc, '[');	545	encode_ch (enc, '[');
485		546
486	if (len >= 0)	547	if (len >= 0)
487	{	548	{
488	encode_nl (enc); ++enc->indent;	549	encode_nl (enc); ++enc->indent;
489		550
490	for (i = 0; i <= len; ++i)	551	for (i = 0; i <= len; ++i)
…		…
502	encode_comma (enc);	563	encode_comma (enc);
503	}	564	}
504		565
505	encode_nl (enc); --enc->indent; encode_indent (enc);	566	encode_nl (enc); --enc->indent; encode_indent (enc);
506	}	567	}
507		568
508	encode_ch (enc, ']');	569	encode_ch (enc, ']');
509	}	570	}
510		571
511	static void	572	static void
512	encode_hk (enc_t enc, HE he)	573	encode_hk (enc_t enc, HE he)
…		…
516	if (HeKLEN (he) == HEf_SVKEY)	577	if (HeKLEN (he) == HEf_SVKEY)
517	{	578	{
518	SV *sv = HeSVKEY (he);	579	SV *sv = HeSVKEY (he);
519	STRLEN len;	580	STRLEN len;
520	char *str;	581	char *str;
521		582
522	SvGETMAGIC (sv);	583	SvGETMAGIC (sv);
523	str = SvPV (sv, len);	584	str = SvPV (sv, len);
524		585
525	encode_str (enc, str, len, SvUTF8 (sv));	586	encode_str (enc, str, len, SvUTF8 (sv));
526	}	587	}
…		…
592	}	653	}
593		654
594	if (count)	655	if (count)
595	{	656	{
596	int i, fast = 1;	657	int i, fast = 1;
597	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	658	HE *hes_stack [STACK_HES];
598	HE *hes = _alloca (count sizeof (HE));	659	HE **hes = hes_stack;
599	#else	660
600	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode	661	// allocate larger arrays on the heap
601	#endif	662	if (count > STACK_HES)
		663	{
		664	SV sv = sv_2mortal (NEWSV (0, count sizeof (*hes)));
		665	hes = (HE **)SvPVX (sv);
		666	}
602		667
603	i = 0;	668	i = 0;
604	while ((he = hv_iternext (hv)))	669	while ((he = hv_iternext (hv)))
605	{	670	{
606	hes [i++] = he;	671	hes [i++] = he;
…		…
675	// encode objects, arrays and special \0=false and \1=true values.	740	// encode objects, arrays and special \0=false and \1=true values.
676	static void	741	static void
677	encode_rv (enc_t enc, SV sv)	742	encode_rv (enc_t enc, SV sv)
678	{	743	{
679	svtype svt;	744	svtype svt;
		745	GV *method;
680		746
681	SvGETMAGIC (sv);	747	SvGETMAGIC (sv);
682	svt = SvTYPE (sv);	748	svt = SvTYPE (sv);
683		749
684	if (expect_false (SvOBJECT (sv)))	750	if (expect_false (SvOBJECT (sv)))
685	{	751	{
686	HV *stash = !JSON_SLOW \|\| json_boolean_stash	752	HV *stash = SvSTASH (sv);
687	? json_boolean_stash
688	: gv_stashpv ("JSON::XS::Boolean", 1);
689		753
690	if (SvSTASH (sv) == stash)	754	if (stash == bool_stash)
691	{	755	{
692	if (SvIV (sv))	756	if (SvIV (sv))
693	encode_str (enc, "true", 4, 0);	757	encode_str (enc, "true", 4, 0);
694	else	758	else
695	encode_str (enc, "false", 5, 0);	759	encode_str (enc, "false", 5, 0);
696	}	760	}
		761	else if ((enc->json.flags & F_ALLOW_TAGS) && (method = gv_fetchmethod_autoload (stash, "FREEZE", 0)))
		762	{
		763	int count;
		764	dSP;
		765
		766	ENTER; SAVETMPS;
		767	SAVESTACK_POS ();
		768	PUSHMARK (SP);
		769	EXTEND (SP, 2);
		770	// we re-bless the reference to get overload and other niceties right
		771	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		772	PUSHs (sv_json);
		773
		774	PUTBACK;
		775	count = call_sv ((SV *)GvCV (method), G_ARRAY);
		776	SPAGAIN;
		777
		778	// catch this surprisingly common error
		779	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		780	croak ("%s::FREEZE method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		781
		782	encode_ch (enc, '(');
		783	encode_ch (enc, '"');
		784	encode_str (enc, HvNAME (stash), HvNAMELEN (stash), HvNAMEUTF8 (stash));
		785	encode_ch (enc, '"');
		786	encode_ch (enc, ')');
		787	encode_ch (enc, '[');
		788
		789	while (count)
		790	{
		791	encode_sv (enc, SP[1 - count--]);
		792
		793	if (count)
		794	encode_ch (enc, ',');
		795	}
		796
		797	encode_ch (enc, ']');
		798
		799	FREETMPS; LEAVE;
		800	}
		801	else if ((enc->json.flags & F_CONV_BLESSED) && (method = gv_fetchmethod_autoload (stash, "TO_JSON", 0)))
		802	{
		803	dSP;
		804
		805	ENTER; SAVETMPS;
		806	PUSHMARK (SP);
		807	// we re-bless the reference to get overload and other niceties right
		808	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		809
		810	// calling with G_SCALAR ensures that we always get a 1 return value
		811	PUTBACK;
		812	call_sv ((SV *)GvCV (method), G_SCALAR);
		813	SPAGAIN;
		814
		815	// catch this surprisingly common error
		816	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		817	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		818
		819	sv = POPs;
		820	PUTBACK;
		821
		822	encode_sv (enc, sv);
		823
		824	FREETMPS; LEAVE;
		825	}
		826	else if (enc->json.flags & F_ALLOW_BLESSED)
		827	encode_str (enc, "null", 4, 0);
697	else	828	else
698	{
699	#if 0
700	if (0 && sv_derived_from (rv, "JSON::Literal"))
701	{
702	// not yet
703	}
704	#endif
705	if (enc->json.flags & F_CONV_BLESSED)
706	{
707	// we re-bless the reference to get overload and other niceties right
708	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
709
710	if (to_json)
711	{
712	dSP;
713
714	ENTER; SAVETMPS; PUSHMARK (SP);
715	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
716
717	// calling with G_SCALAR ensures that we always get a 1 return value
718	PUTBACK;
719	call_sv ((SV *)GvCV (to_json), G_SCALAR);
720	SPAGAIN;
721
722	// catch this surprisingly common error
723	if (SvROK (TOPs) && SvRV (TOPs) == sv)
724	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
725
726	sv = POPs;
727	PUTBACK;
728
729	encode_sv (enc, sv);
730
731	FREETMPS; LEAVE;
732	}
733	else if (enc->json.flags & F_ALLOW_BLESSED)
734	encode_str (enc, "null", 4, 0);
735	else
736	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
737	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
738	}
739	else if (enc->json.flags & F_ALLOW_BLESSED)
740	encode_str (enc, "null", 4, 0);
741	else
742	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	829	croak ("encountered object '%s', but neither allow_blessed, convert_blessed nor allow_tags settings are enabled (or TO_JSON/FREEZE method missing)",
743	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	830	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
744	}
745	}	831	}
746	else if (svt == SVt_PVHV)	832	else if (svt == SVt_PVHV)
747	encode_hv (enc, (HV *)sv);	833	encode_hv (enc, (HV *)sv);
748	else if (svt == SVt_PVAV)	834	else if (svt == SVt_PVAV)
749	encode_av (enc, (AV *)sv);	835	encode_av (enc, (AV *)sv);
750	else if (svt < SVt_PVAV)	836	else if (svt < SVt_PVAV)
751	{	837	{
752	STRLEN len = 0;	838	int bool_type = ref_bool_type (sv);
753	char *pv = svt ? SvPV (sv, len) : 0;
754		839
755	if (len == 1 && *pv == '1')	840	if (bool_type == 1)
756	encode_str (enc, "true", 4, 0);	841	encode_str (enc, "true", 4, 0);
757	else if (len == 1 && *pv == '0')	842	else if (bool_type == 0)
758	encode_str (enc, "false", 5, 0);	843	encode_str (enc, "false", 5, 0);
759	else if (enc->json.flags & F_ALLOW_UNKNOWN)	844	else if (enc->json.flags & F_ALLOW_UNKNOWN)
760	encode_str (enc, "null", 4, 0);	845	encode_str (enc, "null", 4, 0);
761	else	846	else
762	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	847	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
…		…
825	}	910	}
826	else	911	else
827	{	912	{
828	// large integer, use the (rather slow) snprintf way.	913	// large integer, use the (rather slow) snprintf way.
829	need (enc, IVUV_MAXCHARS);	914	need (enc, IVUV_MAXCHARS);
830	enc->cur +=	915	enc->cur +=
831	SvIsUV(sv)	916	SvIsUV(sv)
832	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))	917	? snprintf (enc->cur, IVUV_MAXCHARS, "%"UVuf, (UV)SvUVX (sv))
833	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));	918	: snprintf (enc->cur, IVUV_MAXCHARS, "%"IVdf, (IV)SvIVX (sv));
834	}	919	}
835	}	920	}
836	else if (SvROK (sv))	921	else if (SvROK (sv))
837	encode_rv (enc, SvRV (sv));	922	encode_rv (enc, SvRV (sv));
838	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)	923	else if (!SvOK (sv) \|\| enc->json.flags & F_ALLOW_UNKNOWN)
839	encode_str (enc, "null", 4, 0);	924	encode_str (enc, "null", 4, 0);
840	else	925	else
841	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	926	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, check your input data",
842	SvPV_nolen (sv), SvFLAGS (sv));	927	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
843	}	928	}
844		929
845	static SV *	930	static SV *
846	encode_json (SV scalar, JSON json)	931	encode_json (SV scalar, JSON json)
847	{	932	{
848	enc_t enc;	933	enc_t enc;
849		934
850	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))	935	if (!(json->flags & F_ALLOW_NONREF) && json_nonref (scalar))
851	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	936	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
852		937
853	enc.json = *json;	938	enc.json = *json;
854	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	939	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
855	enc.cur = SvPVX (enc.sv);	940	enc.cur = SvPVX (enc.sv);
…		…
1062	cur++ = dec_cur++;	1147	cur++ = dec_cur++;
1063	while (--clen);	1148	while (--clen);
1064		1149
1065	utf8 = 1;	1150	utf8 = 1;
1066	}	1151	}
		1152	else if (ch == '\t' && dec->json.flags & F_RELAXED)
		1153	*cur++ = ch;
1067	else	1154	else
1068	{	1155	{
1069	--dec_cur;	1156	--dec_cur;
1070		1157
1071	if (!ch)	1158	if (!ch)
…		…
1259	if (*dec->cur == ']')	1346	if (*dec->cur == ']')
1260	{	1347	{
1261	++dec->cur;	1348	++dec->cur;
1262	break;	1349	break;
1263	}	1350	}
1264		1351
1265	if (*dec->cur != ',')	1352	if (*dec->cur != ',')
1266	ERR (", or ] expected while parsing array");	1353	ERR (", or ] expected while parsing array");
1267		1354
1268	++dec->cur;	1355	++dec->cur;
1269		1356
…		…
1393		1480
1394	hv_iterinit (hv);	1481	hv_iterinit (hv);
1395	he = hv_iternext (hv);	1482	he = hv_iternext (hv);
1396	hv_iterinit (hv);	1483	hv_iterinit (hv);
1397		1484
1398	// the next line creates a mortal sv each time its called.	1485	// the next line creates a mortal sv each time it's called.
1399	// might want to optimise this for common cases.	1486	// might want to optimise this for common cases.
1400	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);	1487	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
1401		1488
1402	if (cb)	1489	if (cb)
1403	{	1490	{
1404	dSP;	1491	dSP;
1405	int count;	1492	int count;
1406		1493
1407	ENTER; SAVETMPS; PUSHMARK (SP);	1494	ENTER; SAVETMPS;
		1495	SAVESTACK_POS ();
		1496	PUSHMARK (SP);
1408	XPUSHs (HeVAL (he));	1497	XPUSHs (HeVAL (he));
1409	sv_2mortal (sv);	1498	sv_2mortal (sv);
1410		1499
1411	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;	1500	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
1412		1501
…		…
1425	if (dec->json.cb_object)	1514	if (dec->json.cb_object)
1426	{	1515	{
1427	dSP;	1516	dSP;
1428	int count;	1517	int count;
1429		1518
1430	ENTER; SAVETMPS; PUSHMARK (SP);	1519	ENTER; SAVETMPS;
		1520	SAVESTACK_POS ();
		1521	PUSHMARK (SP);
1431	XPUSHs (sv_2mortal (sv));	1522	XPUSHs (sv_2mortal (sv));
1432		1523
1433	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;	1524	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
1434		1525
1435	if (count == 1)	1526	if (count == 1)
…		…
1451	DEC_DEC_DEPTH;	1542	DEC_DEC_DEPTH;
1452	return 0;	1543	return 0;
1453	}	1544	}
1454		1545
1455	static SV *	1546	static SV *
		1547	decode_tag (dec_t *dec)
		1548	{
		1549	SV *tag = 0;
		1550	SV *val = 0;
		1551
		1552	if (!(dec->json.flags & F_ALLOW_TAGS))
		1553	ERR ("malformed JSON string, neither array, object, number, string or atom");
		1554
		1555	++dec->cur;
		1556
		1557	decode_ws (dec);
		1558
		1559	tag = decode_sv (dec);
		1560	if (!tag)
		1561	goto fail;
		1562
		1563	if (!SvPOK (tag))
		1564	ERR ("malformed JSON string, (tag) must be a string");
		1565
		1566	decode_ws (dec);
		1567
		1568	if (*dec->cur != ')')
		1569	ERR (") expected after tag");
		1570
		1571	++dec->cur;
		1572
		1573	decode_ws (dec);
		1574
		1575	val = decode_sv (dec);
		1576	if (!val)
		1577	goto fail;
		1578
		1579	if (!SvROK (val) \|\| SvTYPE (SvRV (val)) != SVt_PVAV)
		1580	ERR ("malformed JSON string, tag value must be an array");
		1581
		1582	{
		1583	AV av = (AV )SvRV (val);
		1584	int i, len = av_len (av) + 1;
		1585	HV *stash = gv_stashsv (tag, 0);
		1586	SV *sv;
		1587
		1588	if (!stash)
		1589	ERR ("cannot decode perl-object (package does not exist)");
		1590
		1591	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1592
		1593	if (!method)
		1594	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1595
		1596	dSP;
		1597
		1598	ENTER; SAVETMPS;
		1599	PUSHMARK (SP);
		1600	EXTEND (SP, len + 2);
		1601	// we re-bless the reference to get overload and other niceties right
		1602	PUSHs (tag);
		1603	PUSHs (sv_json);
		1604
		1605	for (i = 0; i < len; ++i)
		1606	PUSHs (*av_fetch (av, i, 1));
		1607
		1608	PUTBACK;
		1609	call_sv ((SV *)GvCV (method), G_SCALAR);
		1610	SPAGAIN;
		1611
		1612	SvREFCNT_dec (tag);
		1613	SvREFCNT_dec (val);
		1614	sv = SvREFCNT_inc (POPs);
		1615
		1616	PUTBACK;
		1617
		1618	FREETMPS; LEAVE;
		1619
		1620	return sv;
		1621	}
		1622
		1623	fail:
		1624	SvREFCNT_dec (tag);
		1625	SvREFCNT_dec (val);
		1626	return 0;
		1627	}
		1628
		1629	static SV *
1456	decode_sv (dec_t *dec)	1630	decode_sv (dec_t *dec)
1457	{	1631	{
1458	// the beauty of JSON: you need exactly one character lookahead	1632	// the beauty of JSON: you need exactly one character lookahead
1459	// to parse everything.	1633	// to parse everything.
1460	switch (*dec->cur)	1634	switch (*dec->cur)
1461	{	1635	{
1462	case '"': ++dec->cur; return decode_str (dec);	1636	case '"': ++dec->cur; return decode_str (dec);
1463	case '[': ++dec->cur; return decode_av (dec);	1637	case '[': ++dec->cur; return decode_av (dec);
1464	case '{': ++dec->cur; return decode_hv (dec);	1638	case '{': ++dec->cur; return decode_hv (dec);
		1639	case '(': return decode_tag (dec);
1465		1640
1466	case '-':	1641	case '-':
1467	case '0': case '1': case '2': case '3': case '4':	1642	case '0': case '1': case '2': case '3': case '4':
1468	case '5': case '6': case '7': case '8': case '9':	1643	case '5': case '6': case '7': case '8': case '9':
1469	return decode_num (dec);	1644	return decode_num (dec);
…		…
1471	case 't':	1646	case 't':
1472	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1647	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
1473	{	1648	{
1474	dec->cur += 4;	1649	dec->cur += 4;
1475	#if JSON_SLOW	1650	#if JSON_SLOW
1476	json_true = get_bool ("JSON::XS::true");	1651	bool_true = get_bool ("Types::Serialiser::true");
1477	#endif	1652	#endif
1478	return newSVsv (json_true);	1653	return newSVsv (bool_true);
1479	}	1654	}
1480	else	1655	else
1481	ERR ("'true' expected");	1656	ERR ("'true' expected");
1482		1657
1483	break;	1658	break;
…		…
1485	case 'f':	1660	case 'f':
1486	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1661	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
1487	{	1662	{
1488	dec->cur += 5;	1663	dec->cur += 5;
1489	#if JSON_SLOW	1664	#if JSON_SLOW
1490	json_false = get_bool ("JSON::XS::false");	1665	bool_false = get_bool ("Types::Serialiser::false");
1491	#endif	1666	#endif
1492	return newSVsv (json_false);	1667	return newSVsv (bool_false);
1493	}	1668	}
1494	else	1669	else
1495	ERR ("'false' expected");	1670	ERR ("'false' expected");
1496		1671
1497	break;	1672	break;
…		…
1506	ERR ("'null' expected");	1681	ERR ("'null' expected");
1507		1682
1508	break;	1683	break;
1509		1684
1510	default:	1685	default:
1511	ERR ("malformed JSON string, neither array, object, number, string or atom");	1686	ERR ("malformed JSON string, neither tag, array, object, number, string or atom");
1512	break;	1687	break;
1513	}	1688	}
1514		1689
1515	fail:	1690	fail:
1516	return 0;	1691	return 0;
1517	}	1692	}
1518		1693
1519	static SV *	1694	static SV *
1520	decode_json (SV string, JSON json, char **offset_return)	1695	decode_json (SV string, JSON json, STRLEN *offset_return)
1521	{	1696	{
1522	dec_t dec;	1697	dec_t dec;
1523	SV *sv;	1698	SV *sv;
1524		1699
1525	/* work around bugs in 5.10 where manipulating magic values	1700	/* work around bugs in 5.10 where manipulating magic values
1526	* will perl ignore the magic in subsequent accesses.	1701	* makes perl ignore the magic in subsequent accesses.
1527	* also make a copy of non-PV values, to get them into a clean	1702	* also make a copy of non-PV values, to get them into a clean
1528	* state (SvPV should do that, but it's buggy, see below).	1703	* state (SvPV should do that, but it's buggy, see below).
		1704	*
		1705	* SvIsCOW_shared_hash works around a bug in perl (possibly 5.16),
		1706	* as reported by Reini Urban.
1529	*/	1707	*/
1530	/SvGETMAGIC (string);/	1708	/SvGETMAGIC (string);/
1531	if (SvMAGICAL (string) \|\| !SvPOK (string))	1709	if (SvMAGICAL (string) \|\| !SvPOK (string) \|\| SvIsCOW_shared_hash (string))
1532	string = sv_2mortal (newSVsv (string));	1710	string = sv_2mortal (newSVsv (string));
1533		1711
1534	SvUPGRADE (string, SVt_PV);	1712	SvUPGRADE (string, SVt_PV);
1535		1713
1536	/* work around a bug in perl 5.10, which causes SvCUR to fail an	1714	/* work around a bug in perl 5.10, which causes SvCUR to fail an
…		…
1575		1753
1576	decode_ws (&dec);	1754	decode_ws (&dec);
1577	sv = decode_sv (&dec);	1755	sv = decode_sv (&dec);
1578		1756
1579	if (offset_return)	1757	if (offset_return)
1580	*offset_return = dec.cur;	1758	*offset_return = dec.cur - SvPVX (string);
1581		1759	else if (sv)
1582	if (!(offset_return \|\| !sv))
1583	{	1760	{
1584	// check for trailing garbage	1761	// check for trailing garbage
1585	decode_ws (&dec);	1762	decode_ws (&dec);
1586		1763
1587	if (*dec.cur)	1764	if (*dec.cur)
…		…
1605	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);	1782	pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1606	LEAVE;	1783	LEAVE;
1607		1784
1608	croak ("%s, at character offset %d (before \"%s\")",	1785	croak ("%s, at character offset %d (before \"%s\")",
1609	dec.err,	1786	dec.err,
1610	ptr_to_index (string, dec.cur),	1787	(int)ptr_to_index (string, dec.cur),
1611	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1788	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1612	}	1789	}
1613		1790
1614	sv = sv_2mortal (sv);	1791	sv = sv_2mortal (sv);
1615		1792
1616	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))	1793	if (!(dec.json.flags & F_ALLOW_NONREF) && json_nonref (sv))
1617	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1794	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1618		1795
1619	return sv;	1796	return sv;
1620	}	1797	}
1621		1798
…		…
1743	self->incr_mode = INCR_M_STR;	1920	self->incr_mode = INCR_M_STR;
1744	goto incr_m_str;	1921	goto incr_m_str;
1745		1922
1746	case '[':	1923	case '[':
1747	case '{':	1924	case '{':
		1925	case '(':
1748	if (++self->incr_nest > self->max_depth)	1926	if (++self->incr_nest > self->max_depth)
1749	croak (ERR_NESTING_EXCEEDED);	1927	croak (ERR_NESTING_EXCEEDED);
1750	break;	1928	break;
1751		1929
1752	case ']':	1930	case ']':
1753	case '}':	1931	case '}':
1754	if (--self->incr_nest <= 0)	1932	if (--self->incr_nest <= 0)
1755	goto interrupt;	1933	goto interrupt;
		1934	break;
		1935
		1936	case ')':
		1937	--self->incr_nest;
1756	break;	1938	break;
1757		1939
1758	case '#':	1940	case '#':
1759	self->incr_mode = INCR_M_C1;	1941	self->incr_mode = INCR_M_C1;
1760	goto incr_m_c;	1942	goto incr_m_c;
…		…
1786	i >= '0' && i <= '9' ? i - '0'	1968	i >= '0' && i <= '9' ? i - '0'
1787	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1969	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1788	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1970	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1789	: -1;	1971	: -1;
1790		1972
1791	json_stash = gv_stashpv ("JSON::XS" , 1);	1973	json_stash = gv_stashpv ("JSON::XS" , 1);
1792	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);	1974	bool_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1793
1794	json_true = get_bool ("JSON::XS::true");	1975	bool_true = get_bool ("Types::Serialiser::true");
1795	json_false = get_bool ("JSON::XS::false");	1976	bool_false = get_bool ("Types::Serialiser::false");
		1977
		1978	sv_json = newSVpv ("JSON", 0);
		1979	SvREADONLY_on (sv_json);
1796		1980
1797	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */	1981	CvNODEBUG_on (get_cv ("JSON::XS::incr_text", 0)); /* the debugger completely breaks lvalue subs */
1798	}	1982	}
1799		1983
1800	PROTOTYPES: DISABLE	1984	PROTOTYPES: DISABLE
1801		1985
1802	void CLONE (...)	1986	void CLONE (...)
1803	CODE:	1987	CODE:
1804	json_stash = 0;	1988	json_stash = 0;
1805	json_boolean_stash = 0;	1989	bool_stash = 0;
1806		1990
1807	void new (char *klass)	1991	void new (char *klass)
1808	PPCODE:	1992	PPCODE:
1809	{	1993	{
1810	SV *pv = NEWSV (0, sizeof (JSON));	1994	SV *pv = NEWSV (0, sizeof (JSON));
1811	SvPOK_only (pv);	1995	SvPOK_only (pv);
1812	json_init ((JSON *)SvPVX (pv));	1996	json_init ((JSON *)SvPVX (pv));
1813	XPUSHs (sv_2mortal (sv_bless (	1997	XPUSHs (sv_2mortal (sv_bless (
1814	newRV_noinc (pv),	1998	newRV_noinc (pv),
1815	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)	1999	strEQ (klass, "JSON::XS") ? JSON_STASH : gv_stashpv (klass, 1)
…		…
1830	shrink = F_SHRINK	2014	shrink = F_SHRINK
1831	allow_blessed = F_ALLOW_BLESSED	2015	allow_blessed = F_ALLOW_BLESSED
1832	convert_blessed = F_CONV_BLESSED	2016	convert_blessed = F_CONV_BLESSED
1833	relaxed = F_RELAXED	2017	relaxed = F_RELAXED
1834	allow_unknown = F_ALLOW_UNKNOWN	2018	allow_unknown = F_ALLOW_UNKNOWN
		2019	allow_tags = F_ALLOW_TAGS
1835	PPCODE:	2020	PPCODE:
1836	{	2021	{
1837	if (enable)	2022	if (enable)
1838	self->flags \|= ix;	2023	self->flags \|= ix;
1839	else	2024	else
…		…
1855	get_shrink = F_SHRINK	2040	get_shrink = F_SHRINK
1856	get_allow_blessed = F_ALLOW_BLESSED	2041	get_allow_blessed = F_ALLOW_BLESSED
1857	get_convert_blessed = F_CONV_BLESSED	2042	get_convert_blessed = F_CONV_BLESSED
1858	get_relaxed = F_RELAXED	2043	get_relaxed = F_RELAXED
1859	get_allow_unknown = F_ALLOW_UNKNOWN	2044	get_allow_unknown = F_ALLOW_UNKNOWN
		2045	get_allow_tags = F_ALLOW_TAGS
1860	PPCODE:	2046	PPCODE:
1861	XPUSHs (boolSV (self->flags & ix));	2047	XPUSHs (boolSV (self->flags & ix));
1862		2048
1863	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)	2049	void max_depth (JSON *self, U32 max_depth = 0x80000000UL)
1864	PPCODE:	2050	PPCODE:
…		…
1892	}	2078	}
1893		2079
1894	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)	2080	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
1895	PPCODE:	2081	PPCODE:
1896	{	2082	{
1897	if (!self->cb_sk_object)	2083	if (!self->cb_sk_object)
1898	self->cb_sk_object = newHV ();	2084	self->cb_sk_object = newHV ();
1899		2085
1900	if (SvOK (cb))	2086	if (SvOK (cb))
1901	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);	2087	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1902	else	2088	else
…		…
1913	XPUSHs (ST (0));	2099	XPUSHs (ST (0));
1914	}	2100	}
1915		2101
1916	void encode (JSON self, SV scalar)	2102	void encode (JSON self, SV scalar)
1917	PPCODE:	2103	PPCODE:
1918	XPUSHs (encode_json (scalar, self));	2104	PUTBACK; scalar = encode_json (scalar, self); SPAGAIN;
		2105	XPUSHs (scalar);
1919		2106
1920	void decode (JSON self, SV jsonstr)	2107	void decode (JSON self, SV jsonstr)
1921	PPCODE:	2108	PPCODE:
1922	XPUSHs (decode_json (jsonstr, self, 0));	2109	PUTBACK; jsonstr = decode_json (jsonstr, self, 0); SPAGAIN;
		2110	XPUSHs (jsonstr);
1923		2111
1924	void decode_prefix (JSON self, SV jsonstr)	2112	void decode_prefix (JSON self, SV jsonstr)
1925	PPCODE:	2113	PPCODE:
1926	{	2114	{
1927	char *offset;	2115	SV *sv;
		2116	STRLEN offset;
		2117	PUTBACK; sv = decode_json (jsonstr, self, &offset); SPAGAIN;
1928	EXTEND (SP, 2);	2118	EXTEND (SP, 2);
1929	PUSHs (decode_json (jsonstr, self, &offset));	2119	PUSHs (sv);
1930	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, offset))));	2120	PUSHs (sv_2mortal (newSVuv (ptr_to_index (jsonstr, SvPV_nolen (jsonstr) + offset))));
1931	}	2121	}
1932		2122
1933	void incr_parse (JSON self, SV jsonstr = 0)	2123	void incr_parse (JSON self, SV jsonstr = 0)
1934	PPCODE:	2124	PPCODE:
1935	{	2125	{
…		…
1981	}	2171	}
1982		2172
1983	if (GIMME_V != G_VOID)	2173	if (GIMME_V != G_VOID)
1984	do	2174	do
1985	{	2175	{
		2176	SV *sv;
1986	char *offset;	2177	STRLEN offset;
1987		2178
1988	if (!INCR_DONE (self))	2179	if (!INCR_DONE (self))
1989	{	2180	{
1990	incr_parse (self);	2181	incr_parse (self);
1991		2182
1992	if (self->incr_pos > self->max_size && self->max_size)	2183	if (self->incr_pos > self->max_size && self->max_size)
1993	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",	2184	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
1994	(unsigned long)self->incr_pos, (unsigned long)self->max_size);	2185	(unsigned long)self->incr_pos, (unsigned long)self->max_size);
1995		2186
1996	if (!INCR_DONE (self))	2187	if (!INCR_DONE (self))
		2188	{
		2189	// as an optimisation, do not accumulate white space in the incr buffer
		2190	if (self->incr_mode == INCR_M_WS && self->incr_pos)
		2191	{
		2192	self->incr_pos = 0;
		2193	SvCUR_set (self->incr_text, 0);
		2194	}
		2195
1997	break;	2196	break;
		2197	}
1998	}	2198	}
1999		2199
2000	XPUSHs (decode_json (self->incr_text, self, &offset));	2200	PUTBACK; sv = decode_json (self->incr_text, self, &offset); SPAGAIN;
		2201	XPUSHs (sv);
2001		2202
2002	self->incr_pos -= offset - SvPVX (self->incr_text);	2203	self->incr_pos -= offset;
2003	self->incr_nest = 0;	2204	self->incr_nest = 0;
2004	self->incr_mode = 0;	2205	self->incr_mode = 0;
2005		2206
2006	sv_chop (self->incr_text, offset);	2207	sv_chop (self->incr_text, SvPVX (self->incr_text) + offset);
2007	}	2208	}
2008	while (GIMME_V == G_ARRAY);	2209	while (GIMME_V == G_ARRAY);
2009	}	2210	}
2010		2211
2011	SV incr_text (JSON self)	2212	SV incr_text (JSON self)
…		…
2049	SvREFCNT_dec (self->incr_text);	2250	SvREFCNT_dec (self->incr_text);
2050		2251
2051	PROTOTYPES: ENABLE	2252	PROTOTYPES: ENABLE
2052		2253
2053	void encode_json (SV *scalar)	2254	void encode_json (SV *scalar)
2054	ALIAS:
2055	to_json_ = 0
2056	encode_json = F_UTF8
2057	PPCODE:	2255	PPCODE:
2058	{	2256	{
2059	JSON json;	2257	JSON json;
2060	json_init (&json);	2258	json_init (&json);
2061	json.flags \|= ix;	2259	json.flags \|= F_UTF8;
2062	XPUSHs (encode_json (scalar, &json));	2260	PUTBACK; scalar = encode_json (scalar, &json); SPAGAIN;
		2261	XPUSHs (scalar);
2063	}	2262	}
2064		2263
2065	void decode_json (SV *jsonstr)	2264	void decode_json (SV *jsonstr)
2066	ALIAS:
2067	from_json_ = 0
2068	decode_json = F_UTF8
2069	PPCODE:	2265	PPCODE:
2070	{	2266	{
2071	JSON json;	2267	JSON json;
2072	json_init (&json);	2268	json_init (&json);
2073	json.flags \|= ix;	2269	json.flags \|= F_UTF8;
2074	XPUSHs (decode_json (jsonstr, &json, 0));	2270	PUTBACK; jsonstr = decode_json (jsonstr, &json, 0); SPAGAIN;
		2271	XPUSHs (jsonstr);
2075	}	2272	}
2076		2273

Diff Legend

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+Removed lines
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+Changed lines
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+Changed lines

Comparing JSON-XS/XS.xs (file contents): Revision 1.110 by root, Wed Jun 1 13:01:09 2011 UTC vs. Revision 1.130 by root, Sat Nov 26 06:09:29 2016 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.110 by root, Wed Jun 1 13:01:09 2011 UTC vs.
Revision 1.130 by root, Sat Nov 26 06:09:29 2016 UTC