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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.20 by root, Wed Nov 20 11:06:42 2013 UTC vs.
Revision 1.60 by root, Sat Nov 26 00:47:02 2016 UTC

…		…
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		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
14	// compatibility with perl <5.18	15	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	16	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	21	#endif
21	#ifndef HvNAMEUTF8	22	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	23	# define HvNAMEUTF8(hv) 0
23	#endif	24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
24		65
25	// known tags	66	// known tags
26	enum cbor_tag	67	enum cbor_tag
27	{	68	{
28	// inofficial extensions (pending iana registration)	69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // 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	76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		77
37	// rfc7049	78	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
44		85
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		90
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		96
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	98	};
58		99
59	#define F_SHRINK 0x00000001UL	100	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_FORBID_OBJECTS 0x00000010UL
62	#define F_DEDUP_STRINGS 0x00000008UL //TODO	105	#define F_PACK_STRINGS 0x00000020UL
63	#define F_DEDUP_KEYS 0x00000010UL //TODO	106	#define F_TEXT_KEYS 0x00000040UL
		107	#define F_TEXT_STRINGS 0x00000080UL
		108	#define F_VALIDATE_UTF8 0x00000100UL
64		109
65	#define INIT_SIZE 32 // initial scalar size to be allocated	110	#define INIT_SIZE 32 // initial scalar size to be allocated
66		111
67	#define SB do {	112	#define SB do {
68	#define SE } while (0)	113	#define SE } while (0)
…		…
80	# define CBOR_SLOW 0	125	# define CBOR_SLOW 0
81	# define CBOR_STASH cbor_stash	126	# define CBOR_STASH cbor_stash
82	#endif	127	#endif
83		128
84	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	129	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
85	static SV *types_true, *types_false, *types_error, *sv_cbor;	130	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
86		131
87	typedef struct {	132	typedef struct {
88	U32 flags;	133	U32 flags;
89	U32 max_depth;	134	U32 max_depth;
90	STRLEN max_size;	135	STRLEN max_size;
		136	SV *filter;
		137
		138	// for the incremental parser
		139	STRLEN incr_pos; // the current offset into the text
		140	STRLEN incr_need; // minimum bytes needed to decode
		141	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
91	} CBOR;	142	} CBOR;
92		143
93	ecb_inline void	144	ecb_inline void
94	cbor_init (CBOR *cbor)	145	cbor_init (CBOR *cbor)
95	{	146	{
96	Zero (cbor, 1, CBOR);	147	Zero (cbor, 1, CBOR);
97	cbor->max_depth = 512;	148	cbor->max_depth = 512;
		149	}
		150
		151	ecb_inline void
		152	cbor_free (CBOR *cbor)
		153	{
		154	SvREFCNT_dec (cbor->filter);
		155	SvREFCNT_dec (cbor->incr_count);
98	}	156	}
99		157
100	/////////////////////////////////////////////////////////////////////////////	158	/////////////////////////////////////////////////////////////////////////////
101	// utility functions	159	// utility functions
102		160
…		…
122	SvPV_shrink_to_cur (sv);	180	SvPV_shrink_to_cur (sv);
123	#elif defined (SvPV_renew)	181	#elif defined (SvPV_renew)
124	SvPV_renew (sv, SvCUR (sv) + 1);	182	SvPV_renew (sv, SvCUR (sv) + 1);
125	#endif	183	#endif
126	}	184	}
		185	}
		186
		187	// minimum length of a string to be registered for stringref
		188	ecb_inline int
		189	minimum_string_length (UV idx)
		190	{
		191	return idx > 23
		192	? idx > 0xffU
		193	? idx > 0xffffU
		194	? idx > 0xffffffffU
		195	? 11
		196	: 7
		197	: 5
		198	: 4
		199	: 3;
127	}	200	}
128		201
129	/////////////////////////////////////////////////////////////////////////////	202	/////////////////////////////////////////////////////////////////////////////
130	// encoder	203	// encoder
131		204
…		…
165	static void	238	static void
166	encode_uint (enc_t *enc, int major, UV len)	239	encode_uint (enc_t *enc, int major, UV len)
167	{	240	{
168	need (enc, 9);	241	need (enc, 9);
169		242
170	if (len < 24)	243	if (ecb_expect_true (len < LENGTH_EXT1))
171	*enc->cur++ = major | len;	244	*enc->cur++ = major | len;
172	else if (len <= 0xff)	245	else if (ecb_expect_true (len <= 0xffU))
173	{	246	{
174	*enc->cur++ = major | 24;	247	*enc->cur++ = major | LENGTH_EXT1;
175	*enc->cur++ = len;	248	*enc->cur++ = len;
176	}	249	}
177	else if (len <= 0xffff)	250	else if (len <= 0xffffU)
178	{	251	{
179	*enc->cur++ = major | 25;	252	*enc->cur++ = major | LENGTH_EXT2;
180	*enc->cur++ = len >> 8;	253	*enc->cur++ = len >> 8;
181	*enc->cur++ = len;	254	*enc->cur++ = len;
182	}	255	}
183	else if (len <= 0xffffffff)	256	else if (len <= 0xffffffffU)
184	{	257	{
185	*enc->cur++ = major | 26;	258	*enc->cur++ = major | LENGTH_EXT4;
186	*enc->cur++ = len >> 24;	259	*enc->cur++ = len >> 24;
187	*enc->cur++ = len >> 16;	260	*enc->cur++ = len >> 16;
188	*enc->cur++ = len >> 8;	261	*enc->cur++ = len >> 8;
189	*enc->cur++ = len;	262	*enc->cur++ = len;
190	}	263	}
191	else	264	else
192	{	265	{
193	*enc->cur++ = major | 27;	266	*enc->cur++ = major | LENGTH_EXT8;
194	*enc->cur++ = len >> 56;	267	*enc->cur++ = len >> 56;
195	*enc->cur++ = len >> 48;	268	*enc->cur++ = len >> 48;
196	*enc->cur++ = len >> 40;	269	*enc->cur++ = len >> 40;
197	*enc->cur++ = len >> 32;	270	*enc->cur++ = len >> 32;
198	*enc->cur++ = len >> 24;	271	*enc->cur++ = len >> 24;
…		…
200	*enc->cur++ = len >> 8;	273	*enc->cur++ = len >> 8;
201	*enc->cur++ = len;	274	*enc->cur++ = len;
202	}	275	}
203	}	276	}
204		277
205	static void	278	ecb_inline void
		279	encode_tag (enc_t *enc, UV tag)
		280	{
		281	encode_uint (enc, MAJOR_TAG, tag);
		282	}
		283
		284	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		285	ecb_noinline static void
206	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	286	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
207	{	287	{
208	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	288	STRLEN ulen = len;
		289	U8 *p, *pend = (U8 *)str + len;
		290
		291	for (p = (U8 *)str; p < pend; ++p)
		292	ulen += *p >> 7; // count set high bits
		293
		294	encode_uint (enc, MAJOR_TEXT, ulen);
		295
		296	need (enc, ulen);
		297	for (p = (U8 *)str; p < pend; ++p)
		298	if (*p < 0x80)
		299	*enc->cur++ = *p;
		300	else
		301	{
		302	*enc->cur++ = 0xc0 + (*p >> 6);
		303	*enc->cur++ = 0x80 + (*p & 63);
		304	}
		305	}
		306
		307	ecb_inline void
		308	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		309	{
		310	if (ecb_expect_false (upgrade_utf8))
		311	if (!utf8)
		312	{
		313	encode_str_utf8 (enc, utf8, str, len);
		314	return;
		315	}
		316
		317	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
209	need (enc, len);	318	need (enc, len);
210	memcpy (enc->cur, str, len);	319	memcpy (enc->cur, str, len);
211	enc->cur += len;	320	enc->cur += len;
212	}	321	}
213		322
214	ecb_inline void	323	ecb_inline void
215	encode_tag (enc_t *enc, UV tag)	324	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
216	{	325	{
217	encode_uint (enc, 0xc0, tag);	326	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		327	{
		328	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		329
		330	if (SvOK (*svp))
		331	{
		332	// already registered, use stringref
		333	encode_tag (enc, CBOR_TAG_STRINGREF);
		334	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		335	return;
		336	}
		337	else if (len >= minimum_string_length (enc->stringref_idx))
		338	{
		339	// register only
		340	sv_setuv (*svp, enc->stringref_idx);
		341	++enc->stringref_idx;
		342	}
		343	}
		344
		345	encode_str (enc, upgrade_utf8, utf8, str, len);
218	}	346	}
219		347
220	static void encode_sv (enc_t *enc, SV *sv);	348	static void encode_sv (enc_t *enc, SV *sv);
221		349
222	static void	350	static void
…		…
227	if (enc->depth >= enc->cbor.max_depth)	355	if (enc->depth >= enc->cbor.max_depth)
228	croak (ERR_NESTING_EXCEEDED);	356	croak (ERR_NESTING_EXCEEDED);
229		357
230	++enc->depth;	358	++enc->depth;
231		359
232	encode_uint (enc, 0x80, len + 1);	360	encode_uint (enc, MAJOR_ARRAY, len + 1);
233		361
		362	if (SvMAGICAL (av))
234	for (i = 0; i <= len; ++i)	363	for (i = 0; i <= len; ++i)
235	{	364	{
236	SV **svp = av_fetch (av, i, 0);	365	SV **svp = av_fetch (av, i, 0);
237	encode_sv (enc, svp ? *svp : &PL_sv_undef);	366	encode_sv (enc, svp ? *svp : &PL_sv_undef);
238	}	367	}
		368	else
		369	for (i = 0; i <= len; ++i)
		370	{
		371	SV *sv = AvARRAY (av)[i];
		372	encode_sv (enc, sv ? sv : &PL_sv_undef);
		373	}
239		374
240	--enc->depth;	375	--enc->depth;
241	}
242
243	ecb_inline void
244	encode_he (enc_t *enc, HE *he)
245	{
246	if (HeKLEN (he) == HEf_SVKEY)
247	encode_sv (enc, HeSVKEY (he));
248	else
249	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
250	}	376	}
251		377
252	static void	378	static void
253	encode_hv (enc_t *enc, HV *hv)	379	encode_hv (enc_t *enc, HV *hv)
254	{	380	{
…		…
261		387
262	int pairs = hv_iterinit (hv);	388	int pairs = hv_iterinit (hv);
263	int mg = SvMAGICAL (hv);	389	int mg = SvMAGICAL (hv);
264		390
265	if (mg)	391	if (mg)
266	encode_ch (enc, 0xa0 | 31);	392	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
267	else	393	else
268	encode_uint (enc, 0xa0, pairs);	394	encode_uint (enc, MAJOR_MAP, pairs);
269		395
270	while ((he = hv_iternext (hv)))	396	while ((he = hv_iternext (hv)))
271	{	397	{
272	if (ecb_expect_false (enc->cbor.flags & (F_DEDUP_STRINGS | F_DEDUP_KEYS)))
273	{
274	SV **svp;
275
276	if (HeKLEN (he) == HEf_SVKEY)	398	if (HeKLEN (he) == HEf_SVKEY)
277	svp = hv_fetch_ent (enc->stringref[!! SvUTF8 (HeSVKEY (he))], HeSVKEY (he) , 1, 0);//TODO return HE :/	399	encode_sv (enc, HeSVKEY (he));
278	else
279	svp = hv_fetch (enc->stringref[!! HeKUTF8 (he) ], HeKEY (he), HeKLEN (he), 1);
280
281	if (SvOK (*svp))
282	{
283	encode_tag (enc, CBOR_TAG_STRINGREF);
284	encode_uint (enc, 0x00, SvUV (*svp));
285	}
286	else
287	{
288	sv_setuv (*svp, enc->stringref_idx);
289	++enc->stringref_idx;
290	encode_he (enc, he);
291	}
292	}
293	else	400	else
294	encode_he (enc, he);	401	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
295		402
296	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	403	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
297	}	404	}
298		405
299	if (mg)	406	if (mg)
300	encode_ch (enc, 0xe0 | 31);	407	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
301		408
302	--enc->depth;	409	--enc->depth;
303	}	410	}
304		411
305	// encode objects, arrays and special \0=false and \1=true values.	412	// encode objects, arrays and special \0=false and \1=true values.
306	static void	413	static void
307	encode_rv (enc_t *enc, SV *sv)	414	encode_rv (enc_t *enc, SV *sv)
308	{	415	{
309	SvGETMAGIC (sv);	416	SvGETMAGIC (sv);
310
311	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
312	&& ecb_expect_false (SvREFCNT (sv) > 1))
313	{
314	if (!enc->shareable)
315	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
316
317	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
318
319	if (SvOK (*svp))
320	{
321	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
322	encode_uint (enc, 0x00, SvUV (*svp));
323	return;
324	}
325	else
326	{
327	sv_setuv (*svp, enc->shareable_idx);
328	++enc->shareable_idx;
329	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
330	}
331	}
332		417
333	svtype svt = SvTYPE (sv);	418	svtype svt = SvTYPE (sv);
334		419
335	if (ecb_expect_false (SvOBJECT (sv)))	420	if (ecb_expect_false (SvOBJECT (sv)))
336	{	421	{
…		…
343	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	428	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
344	? cbor_tagged_stash	429	? cbor_tagged_stash
345	: gv_stashpv ("CBOR::XS::Tagged" , 1);	430	: gv_stashpv ("CBOR::XS::Tagged" , 1);
346		431
347	HV *stash = SvSTASH (sv);	432	HV *stash = SvSTASH (sv);
348	GV *method;
349		433
350	if (stash == boolean_stash)	434	if (stash == boolean_stash)
351	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	435	{
		436	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		437	return;
		438	}
352	else if (stash == error_stash)	439	else if (stash == error_stash)
353	encode_ch (enc, 0xe0 | 23);	440	{
		441	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		442	return;
		443	}
354	else if (stash == tagged_stash)	444	else if (stash == tagged_stash)
355	{	445	{
356	if (svt != SVt_PVAV)	446	if (svt != SVt_PVAV)
357	croak ("encountered CBOR::XS::Tagged object that isn't an array");	447	croak ("encountered CBOR::XS::Tagged object that isn't an array");
358		448
359	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	449	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
360	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	450	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		451
		452	return;
		453	}
		454	}
		455
		456	if (ecb_expect_false (SvREFCNT (sv) > 1)
		457	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		458	{
		459	if (!enc->shareable)
		460	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		461
		462	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		463
		464	if (SvOK (*svp))
361	}	465	{
		466	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		467	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		468	return;
		469	}
		470	else
		471	{
		472	sv_setuv (*svp, enc->shareable_idx);
		473	++enc->shareable_idx;
		474	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		475	}
		476	}
		477
		478	if (ecb_expect_false (SvOBJECT (sv)))
		479	{
		480	HV *stash = SvSTASH (sv);
		481	GV *method;
		482
		483	if (enc->cbor.flags & F_FORBID_OBJECTS)
		484	croak ("encountered object '%s', but forbid_objects is enabled",
		485	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
362	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	486	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
363	{	487	{
364	dSP;	488	dSP;
365		489
366	ENTER; SAVETMPS; PUSHMARK (SP);	490	ENTER; SAVETMPS;
		491	PUSHMARK (SP);
367	// we re-bless the reference to get overload and other niceties right	492	// we re-bless the reference to get overload and other niceties right
368	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	493	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
369		494
370	PUTBACK;	495	PUTBACK;
371	// G_SCALAR ensures that return value is 1	496	// G_SCALAR ensures that return value is 1
…		…
384	}	509	}
385	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	510	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
386	{	511	{
387	dSP;	512	dSP;
388		513
389	ENTER; SAVETMPS; PUSHMARK (SP);	514	ENTER; SAVETMPS;
		515	SAVESTACK_POS ();
		516	PUSHMARK (SP);
390	EXTEND (SP, 2);	517	EXTEND (SP, 2);
391	// we re-bless the reference to get overload and other niceties right	518	// we re-bless the reference to get overload and other niceties right
392	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	519	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
393	PUSHs (sv_cbor);	520	PUSHs (sv_cbor);
394		521
…		…
399	// catch this surprisingly common error	526	// catch this surprisingly common error
400	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	527	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
401	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	528	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
402		529
403	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	530	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
404	encode_uint (enc, 0x80, count + 1);	531	encode_uint (enc, MAJOR_ARRAY, count + 1);
405	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	532	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
406		533
407	while (count)	534	while (count)
408	encode_sv (enc, SP[1 - count--]);	535	encode_sv (enc, SP[1 - count--]);
409		536
410	PUTBACK;	537	PUTBACK;
…		…
431	{	558	{
432	double nv = SvNVX (sv);	559	double nv = SvNVX (sv);
433		560
434	need (enc, 9);	561	need (enc, 9);
435		562
436	if (ecb_expect_false (nv == (U32)nv))	563	if (ecb_expect_false (nv == (NV)(U32)nv))
437	encode_uint (enc, 0x00, (U32)nv);	564	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
438	//TODO: maybe I32?	565	//TODO: maybe I32?
439	else if (ecb_expect_false (nv == (float)nv))	566	else if (ecb_expect_false (nv == (float)nv))
440	{	567	{
441	uint32_t fp = ecb_float_to_binary32 (nv);	568	uint32_t fp = ecb_float_to_binary32 (nv);
442		569
443	*enc->cur++ = 0xe0 | 26;	570	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
444		571
445	if (!ecb_big_endian ())	572	if (!ecb_big_endian ())
446	fp = ecb_bswap32 (fp);	573	fp = ecb_bswap32 (fp);
447		574
448	memcpy (enc->cur, &fp, 4);	575	memcpy (enc->cur, &fp, 4);
…		…
450	}	577	}
451	else	578	else
452	{	579	{
453	uint64_t fp = ecb_double_to_binary64 (nv);	580	uint64_t fp = ecb_double_to_binary64 (nv);
454		581
455	*enc->cur++ = 0xe0 | 27;	582	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
456		583
457	if (!ecb_big_endian ())	584	if (!ecb_big_endian ())
458	fp = ecb_bswap64 (fp);	585	fp = ecb_bswap64 (fp);
459		586
460	memcpy (enc->cur, &fp, 8);	587	memcpy (enc->cur, &fp, 8);
…		…
469		596
470	if (SvPOKp (sv))	597	if (SvPOKp (sv))
471	{	598	{
472	STRLEN len;	599	STRLEN len;
473	char *str = SvPV (sv, len);	600	char *str = SvPV (sv, len);
474	encode_str (enc, SvUTF8 (sv), str, len);	601	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
475	}	602	}
476	else if (SvNOKp (sv))	603	else if (SvNOKp (sv))
477	encode_nv (enc, sv);	604	encode_nv (enc, sv);
478	else if (SvIOKp (sv))	605	else if (SvIOKp (sv))
479	{	606	{
480	if (SvIsUV (sv))	607	if (SvIsUV (sv))
481	encode_uint (enc, 0x00, SvUVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
482	else if (SvIVX (sv) >= 0)	609	else if (SvIVX (sv) >= 0)
483	encode_uint (enc, 0x00, SvIVX (sv));	610	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
484	else	611	else
485	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	612	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
486	}	613	}
487	else if (SvROK (sv))	614	else if (SvROK (sv))
488	encode_rv (enc, SvRV (sv));	615	encode_rv (enc, SvRV (sv));
489	else if (!SvOK (sv))	616	else if (!SvOK (sv))
490	encode_ch (enc, 0xe0 | 22);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
491	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	618	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
492	encode_ch (enc, 0xe0 | 23);	619	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
493	else	620	else
494	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	621	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
495	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	622	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
496	}	623	}
497		624
498	static SV *	625	static SV *
499	encode_cbor (SV *scalar, CBOR *cbor)	626	encode_cbor (SV *scalar, CBOR *cbor)
500	{	627	{
501	enc_t enc = { };	628	enc_t enc = { 0 };
502		629
503	enc.cbor = *cbor;	630	enc.cbor = *cbor;
504	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	631	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
505	enc.cur = SvPVX (enc.sv);	632	enc.cur = SvPVX (enc.sv);
506	enc.end = SvEND (enc.sv);	633	enc.end = SvEND (enc.sv);
507		634
508	SvPOK_only (enc.sv);	635	SvPOK_only (enc.sv);
509		636
510	if (cbor->flags & (F_DEDUP_STRINGS | F_DEDUP_KEYS))	637	if (cbor->flags & F_PACK_STRINGS)
511	{	638	{
512	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	639	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
513	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	640	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
514	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	641	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
515	}	642	}
…		…
537	CBOR cbor;	664	CBOR cbor;
538	U32 depth; // recursion depth	665	U32 depth; // recursion depth
539	U32 maxdepth; // recursion depth limit	666	U32 maxdepth; // recursion depth limit
540	AV *shareable;	667	AV *shareable;
541	AV *stringref;	668	AV *stringref;
		669	SV *decode_tagged;
		670	SV *err_sv; // optional sv for error, needs to be freed
542	} dec_t;	671	} dec_t;
543		672
544	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	673	// set dec->err to ERRSV
		674	ecb_cold static void
		675	err_errsv (dec_t *dec)
		676	{
		677	if (!dec->err)
		678	{
		679	dec->err_sv = newSVsv (ERRSV);
545		680
546	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	681	// chop off the trailing \n
		682	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		683	*SvEND (dec->err_sv) = 0;
547		684
		685	dec->err = SvPVutf8_nolen (dec->err_sv);
		686	}
		687	}
		688
		689	// the following functions are used to reduce code size and help the compiler to optimise
		690	ecb_cold static void
		691	err_set (dec_t *dec, const char *reason)
		692	{
		693	if (!dec->err)
		694	dec->err = reason;
		695	}
		696
		697	ecb_cold static void
		698	err_unexpected_end (dec_t *dec)
		699	{
		700	err_set (dec, "unexpected end of CBOR data");
		701	}
		702
		703	ecb_cold static void
		704	err_nesting_exceeded (dec_t *dec)
		705	{
		706	err_set (dec, ERR_NESTING_EXCEEDED);
		707	}
		708
		709	#define ERR_DO(do) SB do; goto fail; SE
		710	#define ERR(reason) ERR_DO (err_set (dec, reason))
		711	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		712
		713	#define WANT(len) if (ecb_expect_false ((UV)(dec->end - dec->cur) < (UV)len)) ERR_DO (err_unexpected_end (dec))
		714
548	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	715	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
549	#define DEC_DEC_DEPTH --dec->depth	716	#define DEC_DEC_DEPTH --dec->depth
550		717
551	static UV	718	static UV
552	decode_uint (dec_t *dec)	719	decode_uint (dec_t *dec)
553	{	720	{
554	switch (*dec->cur & 31)	721	U8 m = *dec->cur & MINOR_MASK;
555	{	722	++dec->cur;
556	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
557	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
558	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
559	return *dec->cur++ & 31;
560		723
561	case 24:	724	if (ecb_expect_true (m < LENGTH_EXT1))
		725	return m;
		726	else if (ecb_expect_true (m == LENGTH_EXT1))
		727	{
562	WANT (2);	728	WANT (1);
563	dec->cur += 2;	729	dec->cur += 1;
564	return dec->cur[-1];	730	return dec->cur[-1];
565		731	}
566	case 25:	732	else if (ecb_expect_true (m == LENGTH_EXT2))
		733	{
567	WANT (3);	734	WANT (2);
568	dec->cur += 3;	735	dec->cur += 2;
569	return (((UV)dec->cur[-2]) << 8)	736	return (((UV)dec->cur[-2]) << 8)
570	| ((UV)dec->cur[-1]);	737	| ((UV)dec->cur[-1]);
571		738	}
572	case 26:	739	else if (ecb_expect_true (m == LENGTH_EXT4))
		740	{
573	WANT (5);	741	WANT (4);
574	dec->cur += 5;	742	dec->cur += 4;
575	return (((UV)dec->cur[-4]) << 24)	743	return (((UV)dec->cur[-4]) << 24)
576	| (((UV)dec->cur[-3]) << 16)	744	| (((UV)dec->cur[-3]) << 16)
577	| (((UV)dec->cur[-2]) << 8)	745	| (((UV)dec->cur[-2]) << 8)
578	| ((UV)dec->cur[-1]);	746	| ((UV)dec->cur[-1]);
579		747	}
580	case 27:	748	else if (ecb_expect_true (m == LENGTH_EXT8))
		749	{
581	WANT (9);	750	WANT (8);
582	dec->cur += 9;	751	dec->cur += 8;
		752
		753	return
		754	#if UVSIZE < 8
		755	0
		756	#else
583	return (((UV)dec->cur[-8]) << 56)	757	(((UV)dec->cur[-8]) << 56)
584	| (((UV)dec->cur[-7]) << 48)	758	| (((UV)dec->cur[-7]) << 48)
585	| (((UV)dec->cur[-6]) << 40)	759	| (((UV)dec->cur[-6]) << 40)
586	| (((UV)dec->cur[-5]) << 32)	760	| (((UV)dec->cur[-5]) << 32)
		761	#endif
587	| (((UV)dec->cur[-4]) << 24)	762	| (((UV)dec->cur[-4]) << 24)
588	| (((UV)dec->cur[-3]) << 16)	763	| (((UV)dec->cur[-3]) << 16)
589	| (((UV)dec->cur[-2]) << 8)	764	| (((UV)dec->cur[-2]) << 8)
590	| ((UV)dec->cur[-1]);	765	| ((UV)dec->cur[-1]);
591		766	}
592	default:	767	else
593	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	768	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
594	}
595		769
596	fail:	770	fail:
597	return 0;	771	return 0;
598	}	772	}
599		773
…		…
604	{	778	{
605	AV *av = newAV ();	779	AV *av = newAV ();
606		780
607	DEC_INC_DEPTH;	781	DEC_INC_DEPTH;
608		782
609	if ((*dec->cur & 31) == 31)	783	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
610	{	784	{
611	++dec->cur;	785	++dec->cur;
612		786
613	for (;;)	787	for (;;)
614	{	788	{
615	WANT (1);	789	WANT (1);
616		790
617	if (*dec->cur == (0xe0 | 31))	791	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
618	{	792	{
619	++dec->cur;	793	++dec->cur;
620	break;	794	break;
621	}	795	}
622		796
623	av_push (av, decode_sv (dec));	797	av_push (av, decode_sv (dec));
624	}	798	}
625	}	799	}
626	else	800	else
627	{	801	{
628	int i, len = decode_uint (dec);	802	UV i, len = decode_uint (dec);
629		803
		804	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
630	av_fill (av, len - 1);	805	av_fill (av, len - 1);
631		806
632	for (i = 0; i < len; ++i)	807	for (i = 0; i < len; ++i)
633	AvARRAY (av)[i] = decode_sv (dec);	808	AvARRAY (av)[i] = decode_sv (dec);
634	}	809	}
…		…
644		819
645	static void	820	static void
646	decode_he (dec_t *dec, HV *hv)	821	decode_he (dec_t *dec, HV *hv)
647	{	822	{
648	// for speed reasons, we specialcase single-string	823	// for speed reasons, we specialcase single-string
649	// byte or utf-8 strings as keys.	824	// byte or utf-8 strings as keys, but only when !stringref
650		825
651	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	826	if (ecb_expect_true (!dec->stringref))
		827	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
652	{	828	{
653	I32 len = decode_uint (dec);	829	STRLEN len = decode_uint (dec);
654	char *key = (char *)dec->cur;	830	char *key = (char *)dec->cur;
655		831
		832	WANT (len);
656	dec->cur += len;	833	dec->cur += len;
657		834
658	if (ecb_expect_false (dec->stringref))
659	av_push (dec->stringref, newSVpvn (key, len));
660
661	hv_store (hv, key, len, decode_sv (dec), 0);	835	hv_store (hv, key, len, decode_sv (dec), 0);
		836
		837	return;
662	}	838	}
663	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	839	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
664	{	840	{
665	I32 len = decode_uint (dec);	841	STRLEN len = decode_uint (dec);
666	char *key = (char *)dec->cur;	842	char *key = (char *)dec->cur;
667		843
		844	WANT (len);
668	dec->cur += len;	845	dec->cur += len;
669		846
670	if (ecb_expect_false (dec->stringref))	847	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
671	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	848	if (!is_utf8_string (key, len))
		849	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
672		850
673	hv_store (hv, key, -len, decode_sv (dec), 0);	851	hv_store (hv, key, -len, decode_sv (dec), 0);
		852
		853	return;
674	}	854	}
675	else	855
676	{
677	SV *k = decode_sv (dec);	856	SV *k = decode_sv (dec);
678	SV *v = decode_sv (dec);	857	SV *v = decode_sv (dec);
679		858
		859	// we leak memory if uncaught exceptions are thrown by random magical
		860	// methods, and this is hopefully the only place where it can happen,
		861	// so if there is a chance of an exception, take the very slow path.
		862	// since catching exceptions is "undocumented/internal/forbidden" by
		863	// the new p5p powers, we need to call out to a perl function :/
		864	if (ecb_expect_false (SvAMAGIC (k)))
		865	{
		866	dSP;
		867
		868	ENTER; SAVETMPS;
		869	PUSHMARK (SP);
		870	EXTEND (SP, 3);
		871	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		872	PUSHs (sv_2mortal (k));
		873	PUSHs (sv_2mortal (v));
		874
		875	PUTBACK;
		876	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		877	SPAGAIN;
		878
		879	FREETMPS; LEAVE;
		880
		881	if (SvTRUE (ERRSV))
		882	ERR_ERRSV;
		883
		884	return;
		885	}
		886
680	hv_store_ent (hv, k, v, 0);	887	hv_store_ent (hv, k, v, 0);
681	SvREFCNT_dec (k);	888	SvREFCNT_dec (k);
682	}	889
		890	fail:
		891	;
683	}	892	}
684		893
685	static SV *	894	static SV *
686	decode_hv (dec_t *dec)	895	decode_hv (dec_t *dec)
687	{	896	{
688	HV *hv = newHV ();	897	HV *hv = newHV ();
689		898
690	DEC_INC_DEPTH;	899	DEC_INC_DEPTH;
691		900
692	if ((*dec->cur & 31) == 31)	901	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
693	{	902	{
694	++dec->cur;	903	++dec->cur;
695		904
696	for (;;)	905	for (;;)
697	{	906	{
698	WANT (1);	907	WANT (1);
699		908
700	if (*dec->cur == (0xe0 | 31))	909	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
701	{	910	{
702	++dec->cur;	911	++dec->cur;
703	break;	912	break;
704	}	913	}
705		914
706	decode_he (dec, hv);	915	decode_he (dec, hv);
707	}	916	}
708	}	917	}
709	else	918	else
710	{	919	{
711	int pairs = decode_uint (dec);	920	UV pairs = decode_uint (dec);
		921
		922	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
712		923
713	while (pairs--)	924	while (pairs--)
714	decode_he (dec, hv);	925	decode_he (dec, hv);
715	}	926	}
716		927
…		…
726	static SV *	937	static SV *
727	decode_str (dec_t *dec, int utf8)	938	decode_str (dec_t *dec, int utf8)
728	{	939	{
729	SV *sv = 0;	940	SV *sv = 0;
730		941
731	if ((*dec->cur & 31) == 31)	942	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
732	{	943	{
		944	// indefinite length strings
733	++dec->cur;	945	++dec->cur;
734		946
		947	U8 major = *dec->cur & MAJOR_MISC;
		948
735	sv = newSVpvn ("", 0);	949	sv = newSVpvn ("", 0);
736		950
737	// not very fast, and certainly not robust against illegal input
738	for (;;)	951	for (;;)
739	{	952	{
740	WANT (1);	953	WANT (1);
741		954
742	if (*dec->cur == (0xe0 | 31))	955	if ((*dec->cur - major) > LENGTH_EXT8)
		956	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
743	{	957	{
744	++dec->cur;	958	++dec->cur;
745	break;	959	break;
746	}	960	}
		961	else
		962	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
747		963
748	sv_catsv (sv, decode_sv (dec));	964	STRLEN len = decode_uint (dec);
		965
		966	WANT (len);
		967	sv_catpvn (sv, dec->cur, len);
		968	dec->cur += len;
749	}	969	}
750	}	970	}
751	else	971	else
752	{	972	{
753	STRLEN len = decode_uint (dec);	973	STRLEN len = decode_uint (dec);
754		974
755	WANT (len);	975	WANT (len);
756	sv = newSVpvn (dec->cur, len);	976	sv = newSVpvn (dec->cur, len);
757	dec->cur += len;	977	dec->cur += len;
		978
		979	if (ecb_expect_false (dec->stringref)
		980	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		981	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
758	}	982	}
759		983
760	if (utf8)	984	if (utf8)
		985	{
		986	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		987	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		988	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		989
761	SvUTF8_on (sv);	990	SvUTF8_on (sv);
762		991	}
763	if (ecb_expect_false (dec->stringref))
764	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
765		992
766	return sv;	993	return sv;
767		994
768	fail:	995	fail:
769	SvREFCNT_dec (sv);	996	SvREFCNT_dec (sv);
…		…
788	sv = newRV_noinc (decode_sv (dec));	1015	sv = newRV_noinc (decode_sv (dec));
789	break;	1016	break;
790		1017
791	case CBOR_TAG_STRINGREF_NAMESPACE:	1018	case CBOR_TAG_STRINGREF_NAMESPACE:
792	{	1019	{
		1020	// do nmot use SAVETMPS/FREETMPS, as these will
		1021	// erase mortalised caches, e.g. "shareable"
793	ENTER; SAVETMPS;	1022	ENTER;
794		1023
795	SAVESPTR (dec->stringref);	1024	SAVESPTR (dec->stringref);
796	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1025	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
797		1026
798	sv = decode_sv (dec);	1027	sv = decode_sv (dec);
799		1028
800	FREETMPS; LEAVE;	1029	LEAVE;
801	}	1030	}
802	break;	1031	break;
803		1032
804	case CBOR_TAG_STRINGREF:	1033	case CBOR_TAG_STRINGREF:
805	{	1034	{
806	if ((*dec->cur >> 5) != 0)	1035	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
807	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1036	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
808		1037
809	UV idx = decode_uint (dec);	1038	UV idx = decode_uint (dec);
810		1039
811	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1040	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
…		…
818	case CBOR_TAG_VALUE_SHAREABLE:	1047	case CBOR_TAG_VALUE_SHAREABLE:
819	{	1048	{
820	if (ecb_expect_false (!dec->shareable))	1049	if (ecb_expect_false (!dec->shareable))
821	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1050	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
822		1051
		1052	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1053	{
823	sv = newSV (0);	1054	sv = newSV (0);
824	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1055	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
825		1056
826	SV *osv = decode_sv (dec);	1057	SV *osv = decode_sv (dec);
827	sv_setsv (sv, osv);	1058	sv_setsv (sv, osv);
828	SvREFCNT_dec_NN (osv);	1059	SvREFCNT_dec_NN (osv);
		1060	}
		1061	else
		1062	{
		1063	av_push (dec->shareable, &PL_sv_undef);
		1064	int idx = AvFILLp (dec->shareable);
		1065	sv = decode_sv (dec);
		1066	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1067	}
829	}	1068	}
830	break;	1069	break;
831		1070
832	case CBOR_TAG_VALUE_SHAREDREF:	1071	case CBOR_TAG_VALUE_SHAREDREF:
833	{	1072	{
834	if ((*dec->cur >> 5) != 0)	1073	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
835	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1074	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
836		1075
837	UV idx = decode_uint (dec);	1076	UV idx = decode_uint (dec);
838		1077
839	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1078	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
840	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1079	ERR ("corrupted CBOR data (sharedref index out of bounds)");
841		1080
842	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1081	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1082
		1083	if (sv == &PL_sv_undef)
		1084	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
843	}	1085	}
844	break;	1086	break;
845		1087
846	case CBOR_TAG_PERL_OBJECT:	1088	case CBOR_TAG_PERL_OBJECT:
847	{	1089	{
		1090	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1091	goto filter;
		1092
848	sv = decode_sv (dec);	1093	sv = decode_sv (dec);
849		1094
850	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1095	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
851	ERR ("corrupted CBOR data (non-array perl object)");	1096	ERR ("corrupted CBOR data (non-array perl object)");
852		1097
…		…
862	if (!method)	1107	if (!method)
863	ERR ("cannot decode perl-object (package does not have a THAW method)");	1108	ERR ("cannot decode perl-object (package does not have a THAW method)");
864		1109
865	dSP;	1110	dSP;
866		1111
867	ENTER; SAVETMPS; PUSHMARK (SP);	1112	ENTER; SAVETMPS;
		1113	PUSHMARK (SP);
868	EXTEND (SP, len + 1);	1114	EXTEND (SP, len + 1);
869	// we re-bless the reference to get overload and other niceties right	1115	// we re-bless the reference to get overload and other niceties right
870	PUSHs (*av_fetch (av, 0, 1));	1116	PUSHs (*av_fetch (av, 0, 1));
871	PUSHs (sv_cbor);	1117	PUSHs (sv_cbor);
872		1118
…		…
880	SPAGAIN;	1126	SPAGAIN;
881		1127
882	if (SvTRUE (ERRSV))	1128	if (SvTRUE (ERRSV))
883	{	1129	{
884	FREETMPS; LEAVE;	1130	FREETMPS; LEAVE;
885	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1131	ERR_ERRSV;
886	}	1132	}
887		1133
888	SvREFCNT_dec (sv);	1134	SvREFCNT_dec (sv);
889	sv = SvREFCNT_inc (POPs);	1135	sv = SvREFCNT_inc (POPs);
890		1136
…		…
893	FREETMPS; LEAVE;	1139	FREETMPS; LEAVE;
894	}	1140	}
895	break;	1141	break;
896		1142
897	default:	1143	default:
		1144	filter:
898	{	1145	{
		1146	SV *tag_sv = newSVuv (tag);
		1147
899	sv = decode_sv (dec);	1148	sv = decode_sv (dec);
900		1149
		1150	dSP;
		1151	ENTER; SAVETMPS;
		1152	SAVESTACK_POS ();
		1153	PUSHMARK (SP);
		1154	EXTEND (SP, 2);
		1155	PUSHs (tag_sv);
		1156	PUSHs (sv);
		1157
		1158	PUTBACK;
		1159	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1160	SPAGAIN;
		1161
		1162	if (SvTRUE (ERRSV))
		1163	{
		1164	SvREFCNT_dec (tag_sv);
		1165	FREETMPS; LEAVE;
		1166	ERR_ERRSV;
		1167	}
		1168
		1169	if (count)
		1170	{
		1171	SvREFCNT_dec (tag_sv);
		1172	SvREFCNT_dec (sv);
		1173	sv = SvREFCNT_inc (POPs);
		1174	}
		1175	else
		1176	{
901	AV *av = newAV ();	1177	AV *av = newAV ();
902	av_push (av, newSVuv (tag));	1178	av_push (av, tag_sv);
903	av_push (av, sv);	1179	av_push (av, sv);
904		1180
905	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1181	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
906	? cbor_tagged_stash	1182	? cbor_tagged_stash
907	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1183	: gv_stashpv ("CBOR::XS::Tagged" , 1);
908
909	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1184	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1185	}
		1186
		1187	PUTBACK;
		1188
		1189	FREETMPS; LEAVE;
910	}	1190	}
911	break;	1191	break;
912	}	1192	}
913		1193
914	return sv;	1194	return sv;
…		…
921	static SV *	1201	static SV *
922	decode_sv (dec_t *dec)	1202	decode_sv (dec_t *dec)
923	{	1203	{
924	WANT (1);	1204	WANT (1);
925		1205
926	switch (*dec->cur >> 5)	1206	switch (*dec->cur >> MAJOR_SHIFT)
927	{	1207	{
928	case 0: // unsigned int	1208	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
929	return newSVuv (decode_uint (dec));	1209	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
930	case 1: // negative int	1210	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
931	return newSViv (-1 - (IV)decode_uint (dec));	1211	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
932	case 2: // octet string	1212	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
933	return decode_str (dec, 0);	1213	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
934	case 3: // utf-8 string	1214	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
935	return decode_str (dec, 1);	1215
936	case 4: // array	1216	case MAJOR_MISC >> MAJOR_SHIFT:
937	return decode_av (dec);
938	case 5: // map
939	return decode_hv (dec);
940	case 6: // tag
941	return decode_tagged (dec);
942	case 7: // misc
943	switch (*dec->cur++ & 31)	1217	switch (*dec->cur++ & MINOR_MASK)
944	{	1218	{
945	case 20:	1219	case SIMPLE_FALSE:
946	#if CBOR_SLOW	1220	#if CBOR_SLOW
947	types_false = get_bool ("Types::Serialiser::false");	1221	types_false = get_bool ("Types::Serialiser::false");
948	#endif	1222	#endif
949	return newSVsv (types_false);	1223	return newSVsv (types_false);
950	case 21:	1224	case SIMPLE_TRUE:
951	#if CBOR_SLOW	1225	#if CBOR_SLOW
952	types_true = get_bool ("Types::Serialiser::true");	1226	types_true = get_bool ("Types::Serialiser::true");
953	#endif	1227	#endif
954	return newSVsv (types_true);	1228	return newSVsv (types_true);
955	case 22:	1229	case SIMPLE_NULL:
956	return newSVsv (&PL_sv_undef);	1230	return newSVsv (&PL_sv_undef);
957	case 23:	1231	case SIMPLE_UNDEF:
958	#if CBOR_SLOW	1232	#if CBOR_SLOW
959	types_error = get_bool ("Types::Serialiser::error");	1233	types_error = get_bool ("Types::Serialiser::error");
960	#endif	1234	#endif
961	return newSVsv (types_error);	1235	return newSVsv (types_error);
962		1236
963	case 25:	1237	case MISC_FLOAT16:
964	{	1238	{
965	WANT (2);	1239	WANT (2);
966		1240
967	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1241	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
968	dec->cur += 2;	1242	dec->cur += 2;
969		1243
970	return newSVnv (ecb_binary16_to_float (fp));	1244	return newSVnv (ecb_binary16_to_float (fp));
971	}	1245	}
972		1246
973	case 26:	1247	case MISC_FLOAT32:
974	{	1248	{
975	uint32_t fp;	1249	uint32_t fp;
976	WANT (4);	1250	WANT (4);
977	memcpy (&fp, dec->cur, 4);	1251	memcpy (&fp, dec->cur, 4);
978	dec->cur += 4;	1252	dec->cur += 4;
…		…
981	fp = ecb_bswap32 (fp);	1255	fp = ecb_bswap32 (fp);
982		1256
983	return newSVnv (ecb_binary32_to_float (fp));	1257	return newSVnv (ecb_binary32_to_float (fp));
984	}	1258	}
985		1259
986	case 27:	1260	case MISC_FLOAT64:
987	{	1261	{
988	uint64_t fp;	1262	uint64_t fp;
989	WANT (8);	1263	WANT (8);
990	memcpy (&fp, dec->cur, 8);	1264	memcpy (&fp, dec->cur, 8);
991	dec->cur += 8;	1265	dec->cur += 8;
…		…
994	fp = ecb_bswap64 (fp);	1268	fp = ecb_bswap64 (fp);
995		1269
996	return newSVnv (ecb_binary64_to_double (fp));	1270	return newSVnv (ecb_binary64_to_double (fp));
997	}	1271	}
998		1272
999	// 0..19 unassigned	1273	// 0..19 unassigned simple
1000	// 24 reserved + unassigned (reserved values are not encodable)	1274	// 24 reserved + unassigned simple (reserved values are not encodable)
		1275	// 28-30 unassigned misc
		1276	// 31 break code
1001	default:	1277	default:
1002	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1278	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1003	}	1279	}
1004		1280
1005	break;	1281	break;
1006	}	1282	}
1007		1283
…		…
1010	}	1286	}
1011		1287
1012	static SV *	1288	static SV *
1013	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1289	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1014	{	1290	{
1015	dec_t dec = { };	1291	dec_t dec = { 0 };
1016	SV *sv;	1292	SV *sv;
1017	STRLEN len;	1293	STRLEN len;
1018	char *data = SvPVbyte (string, len);	1294	char *data = SvPVbyte (string, len);
1019		1295
1020	if (len > cbor->max_size && cbor->max_size)	1296	if (len > cbor->max_size && cbor->max_size)
…		…
1034	if (dec.cur != dec.end && !dec.err)	1310	if (dec.cur != dec.end && !dec.err)
1035	dec.err = "garbage after CBOR object";	1311	dec.err = "garbage after CBOR object";
1036		1312
1037	if (dec.err)	1313	if (dec.err)
1038	{	1314	{
		1315	if (dec.shareable)
		1316	{
		1317	// need to break cyclic links, which would all be in shareable
		1318	int i;
		1319	SV **svp;
		1320
		1321	for (i = av_len (dec.shareable) + 1; i--; )
		1322	if ((svp = av_fetch (dec.shareable, i, 0)))
		1323	sv_setsv (*svp, &PL_sv_undef);
		1324	}
		1325
1039	SvREFCNT_dec (sv);	1326	SvREFCNT_dec (sv);
		1327
		1328	if (dec.err_sv)
		1329	sv_2mortal (dec.err_sv);
		1330
1040	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1331	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1041	}	1332	}
1042		1333
1043	sv = sv_2mortal (sv);	1334	sv = sv_2mortal (sv);
1044		1335
1045	return sv;	1336	return sv;
1046	}	1337	}
1047		1338
		1339	/////////////////////////////////////////////////////////////////////////////
		1340	// incremental parser
		1341
		1342	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1343
		1344	// returns 0 for notyet, 1 for success or error
		1345	static int
		1346	incr_parse (CBOR *self, SV *cborstr)
		1347	{
		1348	STRLEN cur;
		1349	SvPV (cborstr, cur);
		1350
		1351	while (ecb_expect_true (self->incr_need <= cur))
		1352	{
		1353	// table of integer count bytes
		1354	static I8 incr_len[MINOR_MASK + 1] = {
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	0, 0, 0, 0, 0, 0, 0, 0,
		1357	0, 0, 0, 0, 0, 0, 0, 0,
		1358	1, 2, 4, 8,-1,-1,-1,-2
		1359	};
		1360
		1361	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1362	U8 m = *p & MINOR_MASK;
		1363	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1364	I8 ilen = incr_len[m];
		1365
		1366	self->incr_need = self->incr_pos + 1;
		1367
		1368	if (ecb_expect_false (ilen < 0))
		1369	{
		1370	if (m != MINOR_INDEF)
		1371	return 1; // error
		1372
		1373	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1374	{
		1375	if (count >= 0)
		1376	return 1; // error
		1377
		1378	count = 1;
		1379	}
		1380	else
		1381	{
		1382	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1383	count = -1;
		1384	}
		1385	}
		1386	else
		1387	{
		1388	self->incr_need += ilen;
		1389	if (ecb_expect_false (self->incr_need > cur))
		1390	return 0;
		1391
		1392	int major = *p >> MAJOR_SHIFT;
		1393
		1394	switch (major)
		1395	{
		1396	case MAJOR_TAG >> MAJOR_SHIFT:
		1397	++count; // tags merely prefix another value
		1398	break;
		1399
		1400	case MAJOR_BYTES >> MAJOR_SHIFT:
		1401	case MAJOR_TEXT >> MAJOR_SHIFT:
		1402	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1403	case MAJOR_MAP >> MAJOR_SHIFT:
		1404	{
		1405	UV len;
		1406
		1407	if (ecb_expect_false (ilen))
		1408	{
		1409	len = 0;
		1410
		1411	do {
		1412	len = (len << 8) | *++p;
		1413	} while (--ilen);
		1414	}
		1415	else
		1416	len = m;
		1417
		1418	switch (major)
		1419	{
		1420	case MAJOR_BYTES >> MAJOR_SHIFT:
		1421	case MAJOR_TEXT >> MAJOR_SHIFT:
		1422	self->incr_need += len;
		1423	if (ecb_expect_false (self->incr_need > cur))
		1424	return 0;
		1425
		1426	break;
		1427
		1428	case MAJOR_MAP >> MAJOR_SHIFT:
		1429	len <<= 1;
		1430	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1431	if (len)
		1432	{
		1433	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1434	count = len + 1;
		1435	}
		1436	break;
		1437	}
		1438	}
		1439	}
		1440	}
		1441
		1442	self->incr_pos = self->incr_need;
		1443
		1444	if (count > 0)
		1445	{
		1446	while (!--count)
		1447	{
		1448	if (!AvFILLp (self->incr_count))
		1449	return 1; // done
		1450
		1451	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1452	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1453	}
		1454
		1455	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1456	}
		1457	}
		1458
		1459	return 0;
		1460	}
		1461
		1462
1048	/////////////////////////////////////////////////////////////////////////////	1463	/////////////////////////////////////////////////////////////////////////////
1049	// XS interface functions	1464	// XS interface functions
1050		1465
1051	MODULE = CBOR::XS PACKAGE = CBOR::XS	1466	MODULE = CBOR::XS PACKAGE = CBOR::XS
1052		1467
…		…
1060		1475
1061	types_true = get_bool ("Types::Serialiser::true" );	1476	types_true = get_bool ("Types::Serialiser::true" );
1062	types_false = get_bool ("Types::Serialiser::false");	1477	types_false = get_bool ("Types::Serialiser::false");
1063	types_error = get_bool ("Types::Serialiser::error");	1478	types_error = get_bool ("Types::Serialiser::error");
1064		1479
		1480	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1481
1065	sv_cbor = newSVpv ("CBOR", 0);	1482	sv_cbor = newSVpv ("CBOR", 0);
1066	SvREADONLY_on (sv_cbor);	1483	SvREADONLY_on (sv_cbor);
		1484
		1485	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1067	}	1486	}
1068		1487
1069	PROTOTYPES: DISABLE	1488	PROTOTYPES: DISABLE
1070		1489
1071	void CLONE (...)	1490	void CLONE (...)
…		…
1090	void shrink (CBOR *self, int enable = 1)	1509	void shrink (CBOR *self, int enable = 1)
1091	ALIAS:	1510	ALIAS:
1092	shrink = F_SHRINK	1511	shrink = F_SHRINK
1093	allow_unknown = F_ALLOW_UNKNOWN	1512	allow_unknown = F_ALLOW_UNKNOWN
1094	allow_sharing = F_ALLOW_SHARING	1513	allow_sharing = F_ALLOW_SHARING
1095	dedup_keys = F_DEDUP_KEYS	1514	allow_cycles = F_ALLOW_CYCLES
		1515	forbid_objects = F_FORBID_OBJECTS
1096	dedup_strings = F_DEDUP_STRINGS	1516	pack_strings = F_PACK_STRINGS
		1517	text_keys = F_TEXT_KEYS
		1518	text_strings = F_TEXT_STRINGS
		1519	validate_utf8 = F_VALIDATE_UTF8
1097	PPCODE:	1520	PPCODE:
1098	{	1521	{
1099	if (enable)	1522	if (enable)
1100	self->flags |= ix;	1523	self->flags |= ix;
1101	else	1524	else
…		…
1107	void get_shrink (CBOR *self)	1530	void get_shrink (CBOR *self)
1108	ALIAS:	1531	ALIAS:
1109	get_shrink = F_SHRINK	1532	get_shrink = F_SHRINK
1110	get_allow_unknown = F_ALLOW_UNKNOWN	1533	get_allow_unknown = F_ALLOW_UNKNOWN
1111	get_allow_sharing = F_ALLOW_SHARING	1534	get_allow_sharing = F_ALLOW_SHARING
1112	get_dedup_keys = F_DEDUP_KEYS	1535	get_allow_cycles = F_ALLOW_CYCLES
		1536	get_forbid_objects = F_FORBID_OBJECTS
1113	get_dedup_strings = F_DEDUP_STRINGS	1537	get_pack_strings = F_PACK_STRINGS
		1538	get_text_keys = F_TEXT_KEYS
		1539	get_text_strings = F_TEXT_STRINGS
		1540	get_validate_utf8 = F_VALIDATE_UTF8
1114	PPCODE:	1541	PPCODE:
1115	XPUSHs (boolSV (self->flags & ix));	1542	XPUSHs (boolSV (self->flags & ix));
1116		1543
1117	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1544	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1118	PPCODE:	1545	PPCODE:
…		…
1131	XPUSHs (ST (0));	1558	XPUSHs (ST (0));
1132		1559
1133	int get_max_size (CBOR *self)	1560	int get_max_size (CBOR *self)
1134	CODE:	1561	CODE:
1135	RETVAL = self->max_size;	1562	RETVAL = self->max_size;
		1563	OUTPUT:
		1564	RETVAL
		1565
		1566	void filter (CBOR *self, SV *filter = 0)
		1567	PPCODE:
		1568	SvREFCNT_dec (self->filter);
		1569	self->filter = filter ? newSVsv (filter) : filter;
		1570	XPUSHs (ST (0));
		1571
		1572	SV *get_filter (CBOR *self)
		1573	CODE:
		1574	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1136	OUTPUT:	1575	OUTPUT:
1137	RETVAL	1576	RETVAL
1138		1577
1139	void encode (CBOR *self, SV *scalar)	1578	void encode (CBOR *self, SV *scalar)
1140	PPCODE:	1579	PPCODE:
…		…
1155	EXTEND (SP, 2);	1594	EXTEND (SP, 2);
1156	PUSHs (sv);	1595	PUSHs (sv);
1157	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1596	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1158	}	1597	}
1159		1598
		1599	void incr_parse (CBOR *self, SV *cborstr)
		1600	ALIAS:
		1601	incr_parse_multiple = 1
		1602	PPCODE:
		1603	{
		1604	if (SvUTF8 (cborstr))
		1605	sv_utf8_downgrade (cborstr, 0);
		1606
		1607	if (!self->incr_count)
		1608	{
		1609	self->incr_count = newAV ();
		1610	self->incr_pos = 0;
		1611	self->incr_need = 1;
		1612
		1613	av_push (self->incr_count, newSViv (1));
		1614	}
		1615
		1616	do
		1617	{
		1618	if (!incr_parse (self, cborstr))
		1619	{
		1620	if (self->incr_need > self->max_size && self->max_size)
		1621	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1622	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1623
		1624	break;
		1625	}
		1626
		1627	SV *sv;
		1628	char *offset;
		1629
		1630	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1631	XPUSHs (sv);
		1632
		1633	sv_chop (cborstr, offset);
		1634
		1635	av_clear (self->incr_count);
		1636	av_push (self->incr_count, newSViv (1));
		1637
		1638	self->incr_pos = 0;
		1639	self->incr_need = self->incr_pos + 1;
		1640	}
		1641	while (ix);
		1642	}
		1643
		1644	void incr_reset (CBOR *self)
		1645	CODE:
		1646	{
		1647	SvREFCNT_dec (self->incr_count);
		1648	self->incr_count = 0;
		1649	}
		1650
		1651	void DESTROY (CBOR *self)
		1652	PPCODE:
		1653	cbor_free (self);
		1654
1160	PROTOTYPES: ENABLE	1655	PROTOTYPES: ENABLE
1161		1656
1162	void encode_cbor (SV *scalar)	1657	void encode_cbor (SV *scalar)
		1658	ALIAS:
		1659	encode_cbor = 0
		1660	encode_cbor_sharing = F_ALLOW_SHARING
1163	PPCODE:	1661	PPCODE:
1164	{	1662	{
1165	CBOR cbor;	1663	CBOR cbor;
1166	cbor_init (&cbor);	1664	cbor_init (&cbor);
		1665	cbor.flags |= ix;
1167	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1666	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1168	XPUSHs (scalar);	1667	XPUSHs (scalar);
1169	}	1668	}
1170		1669
1171	void decode_cbor (SV *cborstr)	1670	void decode_cbor (SV *cborstr)

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