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

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.10 by root, Sun Oct 27 20:40:25 2013 UTC vs.
Revision 1.26 by root, Fri Nov 22 09:40:13 2013 UTC

…		…
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
12	#include "ecb.h"	12	#include "ecb.h"
13		13
		14	// compatibility with perl <5.18
		15	#ifndef HvNAMELEN_get
		16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		17	#endif
		18	#ifndef HvNAMELEN
		19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		20	#endif
		21	#ifndef HvNAMEUTF8
		22	# define HvNAMEUTF8(hv) 0
		23	#endif
		24
14	// known tags	25	// known tags
15	enum cbor_tag	26	enum cbor_tag
16	{	27	{
17	// inofficial extensions (pending iana registration)	28	// inofficial extensions (pending iana registration)
18	CBOR_TAG_PERL_OBJECT = 256,	29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object
19	CBOR_TAG_GENERIC_OBJECT = 257,	30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object
		31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing
		32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing
		33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref
		34	CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref
		35	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
20		36
21	// rfc7049	37	// rfc7049
22	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
23	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
24	CBOR_TAG_POS_BIGNUM = 2, // byte string	40	CBOR_TAG_POS_BIGNUM = 2, // byte string
…		…
38	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
39		55
40	CBOR_TAG_MAGIC = 55799 // self-describe cbor	56	CBOR_TAG_MAGIC = 55799 // self-describe cbor
41	};	57	};
42		58
43	#define F_SHRINK 0x00000200UL	59	#define F_SHRINK 0x00000001UL
44	#define F_ALLOW_UNKNOWN 0x00002000UL	60	#define F_ALLOW_UNKNOWN 0x00000002UL
		61	#define F_ALLOW_SHARING 0x00000004UL //TODO
		62	#define F_ALLOW_STRINGREF 0x00000008UL //TODO
45		63
46	#define INIT_SIZE 32 // initial scalar size to be allocated	64	#define INIT_SIZE 32 // initial scalar size to be allocated
47		65
48	#define SB do {	66	#define SB do {
49	#define SE } while (0)	67	#define SE } while (0)
…		…
61	# define CBOR_SLOW 0	79	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	80	# define CBOR_STASH cbor_stash
63	#endif	81	#endif
64		82
65	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::	83	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::
66	static SV types_true, types_false, *types_error;	84	static SV types_true, types_false, types_error, sv_cbor;
67		85
68	typedef struct {	86	typedef struct {
69	U32 flags;	87	U32 flags;
70	U32 max_depth;	88	U32 max_depth;
71	STRLEN max_size;	89	STRLEN max_size;
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	123	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	124	#endif
107	}	125	}
108	}	126	}
109		127
110	/////////////////////////////////////////////////////////////////////////////	128	// minimum length of a string to be registered for stringref
111	// fp hell	129	ecb_inline int
112		130	minimum_string_length (UV idx)
113	//TODO	131	{
		132	return idx > 23
		133	? idx > 0xffU
		134	? idx > 0xffffU
		135	? idx > 0xffffffffU
		136	? 7
		137	: 6
		138	: 5
		139	: 4
		140	: 3;
		141	}
114		142
115	/////////////////////////////////////////////////////////////////////////////	143	/////////////////////////////////////////////////////////////////////////////
116	// encoder	144	// encoder
117		145
118	// structure used for encoding CBOR	146	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	149	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	150	char *end; // SvEND (sv)
123	SV *sv; // result scalar	151	SV *sv; // result scalar
124	CBOR cbor;	152	CBOR cbor;
125	U32 depth; // recursion level	153	U32 depth; // recursion level
		154	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		155	UV stringref_idx;
		156	HV *shareable; // ptr => index, or 0
		157	UV shareable_idx;
126	} enc_t;	158	} enc_t;
127		159
128	ecb_inline void	160	ecb_inline void
129	need (enc_t *enc, STRLEN len)	161	need (enc_t *enc, STRLEN len)
130	{	162	{
…		…
182	*enc->cur++ = len >> 8;	214	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	215	*enc->cur++ = len;
184	}	216	}
185	}	217	}
186		218
		219	ecb_inline void
		220	encode_tag (enc_t *enc, UV tag)
		221	{
		222	encode_uint (enc, 0xc0, tag);
		223	}
		224
187	static void	225	static void
188	encode_str (enc_t enc, int utf8, char str, STRLEN len)	226	encode_str (enc_t enc, int utf8, char str, STRLEN len)
189	{	227	{
		228	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_STRINGREF))
		229	{
		230	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		231
		232	if (SvOK (*svp))
		233	{
		234	// already registered, use stringref
		235	encode_tag (enc, CBOR_TAG_STRINGREF);
		236	encode_uint (enc, 0x00, SvUV (*svp));
		237	return;
		238	}
		239	else if (len >= minimum_string_length (enc->stringref_idx))
		240	{
		241	// register only
		242	sv_setuv (*svp, enc->stringref_idx);
		243	++enc->stringref_idx;
		244	}
		245	}
		246
190	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	247	encode_uint (enc, utf8 ? 0x60 : 0x40, len);
191	need (enc, len);	248	need (enc, len);
192	memcpy (enc->cur, str, len);	249	memcpy (enc->cur, str, len);
193	enc->cur += len;	250	enc->cur += len;
194	}	251	}
…		…
252		309
253	// encode objects, arrays and special \0=false and \1=true values.	310	// encode objects, arrays and special \0=false and \1=true values.
254	static void	311	static void
255	encode_rv (enc_t enc, SV sv)	312	encode_rv (enc_t enc, SV sv)
256	{	313	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	314	SvGETMAGIC (sv);
		315
		316	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
		317	&& ecb_expect_false (SvREFCNT (sv) > 1))
		318	{
		319	if (!enc->shareable)
		320	enc->shareable = (HV )sv_2mortal ((SV )newHV ());
		321
		322	SV *svp = hv_fetch (enc->shareable, (char )&sv, sizeof (sv), 1);
		323
		324	if (SvOK (*svp))
		325	{
		326	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		327	encode_uint (enc, 0x00, SvUV (*svp));
		328	return;
		329	}
		330	else
		331	{
		332	sv_setuv (*svp, enc->shareable_idx);
		333	++enc->shareable_idx;
		334	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		335	}
		336	}
		337
260	svt = SvTYPE (sv);	338	svtype svt = SvTYPE (sv);
261		339
262	if (ecb_expect_false (SvOBJECT (sv)))	340	if (ecb_expect_false (SvOBJECT (sv)))
263	{	341	{
264	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash	342	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash
265	? types_boolean_stash	343	? types_boolean_stash
…		…
269	: gv_stashpv ("Types::Serialiser::Error", 1);	347	: gv_stashpv ("Types::Serialiser::Error", 1);
270	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	348	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
271	? cbor_tagged_stash	349	? cbor_tagged_stash
272	: gv_stashpv ("CBOR::XS::Tagged" , 1);	350	: gv_stashpv ("CBOR::XS::Tagged" , 1);
273		351
		352	HV *stash = SvSTASH (sv);
		353	GV *method;
		354
274	if (SvSTASH (sv) == boolean_stash)	355	if (stash == boolean_stash)
275	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);	356	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);
276	else if (SvSTASH (sv) == error_stash)	357	else if (stash == error_stash)
277	encode_ch (enc, 0xe0 \| 23);	358	encode_ch (enc, 0xe0 \| 23);
278	else if (SvSTASH (sv) == tagged_stash)	359	else if (stash == tagged_stash)
279	{	360	{
280	if (svt != SVt_PVAV)	361	if (svt != SVt_PVAV)
281	croak ("encountered CBOR::XS::Tagged object that isn't an array");	362	croak ("encountered CBOR::XS::Tagged object that isn't an array");
282		363
283	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));	364	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));
284	encode_sv (enc, av_fetch ((AV )sv, 1, 1));	365	encode_sv (enc, av_fetch ((AV )sv, 1, 1));
285	}	366	}
		367	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		368	{
		369	dSP;
		370
		371	ENTER; SAVETMPS; PUSHMARK (SP);
		372	// we re-bless the reference to get overload and other niceties right
		373	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		374
		375	PUTBACK;
		376	// G_SCALAR ensures that return value is 1
		377	call_sv ((SV *)GvCV (method), G_SCALAR);
		378	SPAGAIN;
		379
		380	// catch this surprisingly common error
		381	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		382	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
		383
		384	encode_sv (enc, POPs);
		385
		386	PUTBACK;
		387
		388	FREETMPS; LEAVE;
		389	}
		390	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		391	{
		392	dSP;
		393
		394	ENTER; SAVETMPS; PUSHMARK (SP);
		395	EXTEND (SP, 2);
		396	// we re-bless the reference to get overload and other niceties right
		397	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		398	PUSHs (sv_cbor);
		399
		400	PUTBACK;
		401	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		402	SPAGAIN;
		403
		404	// catch this surprisingly common error
		405	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		406	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		407
		408	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		409	encode_uint (enc, 0x80, count + 1);
		410	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		411
		412	while (count)
		413	encode_sv (enc, SP[1 - count--]);
		414
		415	PUTBACK;
		416
		417	FREETMPS; LEAVE;
		418	}
286	else	419	else
287	{
288	// we re-bless the reference to get overload and other niceties right
289	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
290
291	if (to_cbor)
292	{
293	dSP;
294
295	ENTER; SAVETMPS; PUSHMARK (SP);
296	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
297
298	// calling with G_SCALAR ensures that we always get a 1 return value
299	PUTBACK;
300	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);
301	SPAGAIN;
302
303	// catch this surprisingly common error
304	if (SvROK (TOPs) && SvRV (TOPs) == sv)
305	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
306
307	sv = POPs;
308	PUTBACK;
309
310	encode_sv (enc, sv);
311
312	FREETMPS; LEAVE;
313	}
314	else
315	croak ("encountered object '%s', but no TO_CBOR method available on it",	420	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
316	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	421	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
317	}
318	}	422	}
319	else if (svt == SVt_PVHV)	423	else if (svt == SVt_PVHV)
320	encode_hv (enc, (HV *)sv);	424	encode_hv (enc, (HV *)sv);
321	else if (svt == SVt_PVAV)	425	else if (svt == SVt_PVAV)
322	encode_av (enc, (AV *)sv);	426	encode_av (enc, (AV *)sv);
323	else if (svt < SVt_PVAV)
324	{
325	STRLEN len = 0;
326	char *pv = svt ? SvPV (sv, len) : 0;
327
328	if (len == 1 && *pv == '1')
329	encode_ch (enc, 0xe0 \| 21);
330	else if (len == 1 && *pv == '0')
331	encode_ch (enc, 0xe0 \| 20);
332	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
333	encode_ch (enc, 0xe0 \| 23);
334	else
335	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
336	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
337	}
338	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
339	encode_ch (enc, 0xe0 \| 23);
340	else	427	else
341	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	428	{
342	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	429	encode_tag (enc, CBOR_TAG_INDIRECTION);
		430	encode_sv (enc, sv);
		431	}
343	}	432	}
344		433
345	static void	434	static void
346	encode_nv (enc_t enc, SV sv)	435	encode_nv (enc_t enc, SV sv)
347	{	436	{
…		…
412	}	501	}
413		502
414	static SV *	503	static SV *
415	encode_cbor (SV scalar, CBOR cbor)	504	encode_cbor (SV scalar, CBOR cbor)
416	{	505	{
417	enc_t enc;	506	enc_t enc = { };
418		507
419	enc.cbor = *cbor;	508	enc.cbor = *cbor;
420	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	509	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
421	enc.cur = SvPVX (enc.sv);	510	enc.cur = SvPVX (enc.sv);
422	enc.end = SvEND (enc.sv);	511	enc.end = SvEND (enc.sv);
423	enc.depth = 0;
424		512
425	SvPOK_only (enc.sv);	513	SvPOK_only (enc.sv);
		514
		515	if (cbor->flags & F_ALLOW_STRINGREF)
		516	{
		517	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		518	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());
		519	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());
		520	}
		521
426	encode_sv (&enc, scalar);	522	encode_sv (&enc, scalar);
427		523
428	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	524	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
429	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	525	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
430		526
…		…
444	U8 *end; // end of input string	540	U8 *end; // end of input string
445	const char *err; // parse error, if != 0	541	const char *err; // parse error, if != 0
446	CBOR cbor;	542	CBOR cbor;
447	U32 depth; // recursion depth	543	U32 depth; // recursion depth
448	U32 maxdepth; // recursion depth limit	544	U32 maxdepth; // recursion depth limit
		545	AV *shareable;
		546	AV *stringref;
449	} dec_t;	547	} dec_t;
450		548
451	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	549	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
452		550
453	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	551	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
…		…
547	SvREFCNT_dec (av);	645	SvREFCNT_dec (av);
548	DEC_DEC_DEPTH;	646	DEC_DEC_DEPTH;
549	return &PL_sv_undef;	647	return &PL_sv_undef;
550	}	648	}
551		649
		650	static void
		651	decode_he (dec_t dec, HV hv)
		652	{
		653	// for speed reasons, we specialcase single-string
		654	// byte or utf-8 strings as keys, but only when !stringref
		655
		656	if (ecb_expect_true (!dec->stringref))
		657	if (dec->cur >= 0x40 && dec->cur <= 0x40 + 27)
		658	{
		659	I32 len = decode_uint (dec);
		660	char key = (char )dec->cur;
		661
		662	dec->cur += len;
		663
		664	if (ecb_expect_false (dec->stringref))
		665	av_push (dec->stringref, newSVpvn (key, len));
		666
		667	hv_store (hv, key, len, decode_sv (dec), 0);
		668
		669	return;
		670	}
		671	else if (dec->cur >= 0x60 && dec->cur <= 0x60 + 27)
		672	{
		673	I32 len = decode_uint (dec);
		674	char key = (char )dec->cur;
		675
		676	dec->cur += len;
		677
		678	if (ecb_expect_false (dec->stringref))
		679	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));
		680
		681	hv_store (hv, key, -len, decode_sv (dec), 0);
		682
		683	return;
		684	}
		685
		686	SV *k = decode_sv (dec);
		687	SV *v = decode_sv (dec);
		688
		689	hv_store_ent (hv, k, v, 0);
		690	SvREFCNT_dec (k);
		691	}
		692
552	static SV *	693	static SV *
553	decode_hv (dec_t *dec)	694	decode_hv (dec_t *dec)
554	{	695	{
555	HV *hv = newHV ();	696	HV *hv = newHV ();
556		697
…		…
568	{	709	{
569	++dec->cur;	710	++dec->cur;
570	break;	711	break;
571	}	712	}
572		713
573	SV *k = decode_sv (dec);	714	decode_he (dec, hv);
574	SV *v = decode_sv (dec);
575
576	hv_store_ent (hv, k, v, 0);
577	}	715	}
578	}	716	}
579	else	717	else
580	{	718	{
581	int len = decode_uint (dec);	719	int pairs = decode_uint (dec);
582		720
583	while (len--)	721	while (pairs--)
584	{	722	decode_he (dec, hv);
585	SV *k = decode_sv (dec);
586	SV *v = decode_sv (dec);
587
588	hv_store_ent (hv, k, v, 0);
589	}
590	}	723	}
591		724
592	DEC_DEC_DEPTH;	725	DEC_DEC_DEPTH;
593	return newRV_noinc ((SV *)hv);	726	return newRV_noinc ((SV *)hv);
594		727
…		…
628	STRLEN len = decode_uint (dec);	761	STRLEN len = decode_uint (dec);
629		762
630	WANT (len);	763	WANT (len);
631	sv = newSVpvn (dec->cur, len);	764	sv = newSVpvn (dec->cur, len);
632	dec->cur += len;	765	dec->cur += len;
		766
		767	if (ecb_expect_false (dec->stringref)
		768	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		769	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
633	}	770	}
634		771
635	if (utf8)	772	if (utf8)
636	SvUTF8_on (sv);	773	SvUTF8_on (sv);
637		774
…		…
643	}	780	}
644		781
645	static SV *	782	static SV *
646	decode_tagged (dec_t *dec)	783	decode_tagged (dec_t *dec)
647	{	784	{
		785	SV *sv = 0;
648	UV tag = decode_uint (dec);	786	UV tag = decode_uint (dec);
		787
		788	WANT (1);
		789
		790	switch (tag)
		791	{
		792	case CBOR_TAG_MAGIC:
		793	sv = decode_sv (dec);
		794	break;
		795
		796	case CBOR_TAG_INDIRECTION:
		797	sv = newRV_noinc (decode_sv (dec));
		798	break;
		799
		800	case CBOR_TAG_STRINGREF_NAMESPACE:
		801	{
		802	ENTER; SAVETMPS;
		803
		804	SAVESPTR (dec->stringref);
		805	dec->stringref = (AV )sv_2mortal ((SV )newAV ());
		806
		807	sv = decode_sv (dec);
		808
		809	FREETMPS; LEAVE;
		810	}
		811	break;
		812
		813	case CBOR_TAG_STRINGREF:
		814	{
		815	if ((*dec->cur >> 5) != 0)
		816	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		817
		818	UV idx = decode_uint (dec);
		819
		820	if (!dec->stringref \|\| (int)idx > AvFILLp (dec->stringref))
		821	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		822
		823	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		824	}
		825	break;
		826
		827	case CBOR_TAG_VALUE_SHAREABLE:
		828	{
		829	if (ecb_expect_false (!dec->shareable))
		830	dec->shareable = (AV )sv_2mortal ((SV )newAV ());
		831
		832	sv = newSV (0);
		833	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		834
649	SV *sv = decode_sv (dec);	835	SV *osv = decode_sv (dec);
		836	sv_setsv (sv, osv);
		837	SvREFCNT_dec_NN (osv);
		838	}
		839	break;
650		840
651	if (tag == CBOR_TAG_MAGIC)	841	case CBOR_TAG_VALUE_SHAREDREF:
652	return sv;	842	{
		843	if ((*dec->cur >> 5) != 0)
		844	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
653		845
654	if (tag == CBOR_TAG_PERL_OBJECT)	846	UV idx = decode_uint (dec);
655	{	847
		848	if (!dec->shareable \|\| (int)idx > AvFILLp (dec->shareable))
		849	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		850
		851	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		852	}
		853	break;
		854
		855	case CBOR_TAG_PERL_OBJECT:
		856	{
		857	sv = decode_sv (dec);
		858
656	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)	859	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)
657	ERR ("corrupted CBOR data (non-array perl object)");	860	ERR ("corrupted CBOR data (non-array perl object)");
		861
		862	AV av = (AV )SvRV (sv);
		863	int len = av_len (av) + 1;
		864	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);
		865
		866	if (!stash)
		867	ERR ("cannot decode perl-object (package does not exist)");
		868
		869	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		870
		871	if (!method)
		872	ERR ("cannot decode perl-object (package does not have a THAW method)");
		873
		874	dSP;
		875
		876	ENTER; SAVETMPS; PUSHMARK (SP);
		877	EXTEND (SP, len + 1);
		878	// we re-bless the reference to get overload and other niceties right
		879	PUSHs (*av_fetch (av, 0, 1));
		880	PUSHs (sv_cbor);
		881
		882	int i;
		883
		884	for (i = 1; i < len; ++i)
		885	PUSHs (*av_fetch (av, i, 1));
		886
		887	PUTBACK;
		888	call_sv ((SV *)GvCV (method), G_SCALAR \| G_EVAL);
		889	SPAGAIN;
		890
		891	if (SvTRUE (ERRSV))
		892	{
		893	FREETMPS; LEAVE;
		894	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		895	}
		896
		897	SvREFCNT_dec (sv);
		898	sv = SvREFCNT_inc (POPs);
		899
		900	PUTBACK;
		901
		902	FREETMPS; LEAVE;
658		903	}
659	// TODO	904	break;
660	}
661		905
		906	default:
		907	{
		908	sv = decode_sv (dec);
		909
662	AV *av = newAV ();	910	AV *av = newAV ();
663	av_push (av, newSVuv (tag));	911	av_push (av, newSVuv (tag));
664	av_push (av, sv);	912	av_push (av, sv);
665		913
666	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	914	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
667	? cbor_tagged_stash	915	? cbor_tagged_stash
668	: gv_stashpv ("CBOR::XS::Tagged" , 1);	916	: gv_stashpv ("CBOR::XS::Tagged" , 1);
669		917
670	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	918	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		919	}
		920	break;
		921	}
		922
		923	return sv;
671		924
672	fail:	925	fail:
673	SvREFCNT_dec (sv);	926	SvREFCNT_dec (sv);
674	return &PL_sv_undef;	927	return &PL_sv_undef;
675	}	928	}
…		…
766	}	1019	}
767		1020
768	static SV *	1021	static SV *
769	decode_cbor (SV string, CBOR cbor, char **offset_return)	1022	decode_cbor (SV string, CBOR cbor, char **offset_return)
770	{	1023	{
771	dec_t dec;	1024	dec_t dec = { };
772	SV *sv;	1025	SV *sv;
		1026	STRLEN len;
		1027	char *data = SvPVbyte (string, len);
773		1028
774	/* work around bugs in 5.10 where manipulating magic values
775	* makes perl ignore the magic in subsequent accesses.
776	* also make a copy of non-PV values, to get them into a clean
777	* state (SvPV should do that, but it's buggy, see below).
778	*/
779	/SvGETMAGIC (string);/
780	if (SvMAGICAL (string) \|\| !SvPOK (string))
781	string = sv_2mortal (newSVsv (string));
782
783	SvUPGRADE (string, SVt_PV);
784
785	/* work around a bug in perl 5.10, which causes SvCUR to fail an
786	* assertion with -DDEBUGGING, although SvCUR is documented to
787	* return the xpv_cur field which certainly exists after upgrading.
788	* according to nicholas clark, calling SvPOK fixes this.
789	* But it doesn't fix it, so try another workaround, call SvPV_nolen
790	* and hope for the best.
791	* Damnit, SvPV_nolen still trips over yet another assertion. This
792	* assertion business is seriously broken, try yet another workaround
793	* for the broken -DDEBUGGING.
794	*/
795	{
796	#ifdef DEBUGGING
797	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
798	#else
799	STRLEN offset = SvCUR (string);
800	#endif
801
802	if (offset > cbor->max_size && cbor->max_size)	1029	if (len > cbor->max_size && cbor->max_size)
803	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1030	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
804	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1031	(unsigned long)len, (unsigned long)cbor->max_size);
805	}
806
807	sv_utf8_downgrade (string, 0);
808		1032
809	dec.cbor = *cbor;	1033	dec.cbor = *cbor;
810	dec.cur = (U8 *)SvPVX (string);	1034	dec.cur = (U8 *)data;
811	dec.end = (U8 *)SvEND (string);	1035	dec.end = (U8 *)data + len;
812	dec.err = 0;
813	dec.depth = 0;
814		1036
815	sv = decode_sv (&dec);	1037	sv = decode_sv (&dec);
816		1038
817	if (offset_return)	1039	if (offset_return)
818	*offset_return = dec.cur;	1040	*offset_return = dec.cur;
…		…
822	dec.err = "garbage after CBOR object";	1044	dec.err = "garbage after CBOR object";
823		1045
824	if (dec.err)	1046	if (dec.err)
825	{	1047	{
826	SvREFCNT_dec (sv);	1048	SvREFCNT_dec (sv);
827	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )SvPVX (string), (int)(uint8_t)dec.cur);	1049	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);
828	}	1050	}
829		1051
830	sv = sv_2mortal (sv);	1052	sv = sv_2mortal (sv);
831		1053
832	return sv;	1054	return sv;
…		…
846	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);	1068	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
847		1069
848	types_true = get_bool ("Types::Serialiser::true" );	1070	types_true = get_bool ("Types::Serialiser::true" );
849	types_false = get_bool ("Types::Serialiser::false");	1071	types_false = get_bool ("Types::Serialiser::false");
850	types_error = get_bool ("Types::Serialiser::error");	1072	types_error = get_bool ("Types::Serialiser::error");
		1073
		1074	sv_cbor = newSVpv ("CBOR", 0);
		1075	SvREADONLY_on (sv_cbor);
851	}	1076	}
852		1077
853	PROTOTYPES: DISABLE	1078	PROTOTYPES: DISABLE
854		1079
855	void CLONE (...)	1080	void CLONE (...)
…		…
873		1098
874	void shrink (CBOR *self, int enable = 1)	1099	void shrink (CBOR *self, int enable = 1)
875	ALIAS:	1100	ALIAS:
876	shrink = F_SHRINK	1101	shrink = F_SHRINK
877	allow_unknown = F_ALLOW_UNKNOWN	1102	allow_unknown = F_ALLOW_UNKNOWN
		1103	allow_sharing = F_ALLOW_SHARING
		1104	allow_stringref = F_ALLOW_STRINGREF
878	PPCODE:	1105	PPCODE:
879	{	1106	{
880	if (enable)	1107	if (enable)
881	self->flags \|= ix;	1108	self->flags \|= ix;
882	else	1109	else
…		…
887		1114
888	void get_shrink (CBOR *self)	1115	void get_shrink (CBOR *self)
889	ALIAS:	1116	ALIAS:
890	get_shrink = F_SHRINK	1117	get_shrink = F_SHRINK
891	get_allow_unknown = F_ALLOW_UNKNOWN	1118	get_allow_unknown = F_ALLOW_UNKNOWN
		1119	get_allow_sharing = F_ALLOW_SHARING
		1120	get_allow_stringref = F_ALLOW_STRINGREF
892	PPCODE:	1121	PPCODE:
893	XPUSHs (boolSV (self->flags & ix));	1122	XPUSHs (boolSV (self->flags & ix));
894		1123
895	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1124	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
896	PPCODE:	1125	PPCODE:
…		…
911	int get_max_size (CBOR *self)	1140	int get_max_size (CBOR *self)
912	CODE:	1141	CODE:
913	RETVAL = self->max_size;	1142	RETVAL = self->max_size;
914	OUTPUT:	1143	OUTPUT:
915	RETVAL	1144	RETVAL
916
917	#if 0 //TODO
918
919	void filter_cbor_object (CBOR self, SV cb = &PL_sv_undef)
920	PPCODE:
921	{
922	SvREFCNT_dec (self->cb_object);
923	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;
924
925	XPUSHs (ST (0));
926	}
927
928	void filter_cbor_single_key_object (CBOR self, SV key, SV *cb = &PL_sv_undef)
929	PPCODE:
930	{
931	if (!self->cb_sk_object)
932	self->cb_sk_object = newHV ();
933
934	if (SvOK (cb))
935	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
936	else
937	{
938	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
939
940	if (!HvKEYS (self->cb_sk_object))
941	{
942	SvREFCNT_dec (self->cb_sk_object);
943	self->cb_sk_object = 0;
944	}
945	}
946
947	XPUSHs (ST (0));
948	}
949
950	#endif
951		1145
952	void encode (CBOR self, SV scalar)	1146	void encode (CBOR self, SV scalar)
953	PPCODE:	1147	PPCODE:
954	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1148	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
955	XPUSHs (scalar);	1149	XPUSHs (scalar);
…		…
968	EXTEND (SP, 2);	1162	EXTEND (SP, 2);
969	PUSHs (sv);	1163	PUSHs (sv);
970	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1164	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
971	}	1165	}
972		1166
973	#if 0
974
975	void DESTROY (CBOR *self)
976	CODE:
977	SvREFCNT_dec (self->cb_sk_object);
978	SvREFCNT_dec (self->cb_object);
979
980	#endif
981
982	PROTOTYPES: ENABLE	1167	PROTOTYPES: ENABLE
983		1168
984	void encode_cbor (SV *scalar)	1169	void encode_cbor (SV *scalar)
985	PPCODE:	1170	PPCODE:
986	{	1171	{

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Comparing CBOR-XS/XS.xs (file contents): Revision 1.10 by root, Sun Oct 27 20:40:25 2013 UTC vs. Revision 1.26 by root, Fri Nov 22 09:40:13 2013 UTC

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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.10 by root, Sun Oct 27 20:40:25 2013 UTC vs.
Revision 1.26 by root, Fri Nov 22 09:40:13 2013 UTC