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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.8 by root, Sun Oct 27 10:12:01 2013 UTC vs.
Revision 1.51 by root, Sun Apr 24 13:15:19 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	// known tags, rfc7049	15	// compatibility with perl <5.18
		16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		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	};
		65
		66	// known tags
15	enum cbor_tag	67	enum cbor_tag
16	{	68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
17	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
18	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
19	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
20	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
21	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
22	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
23		85
24	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
25	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
26	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
27	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
28		90
29	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
30	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
31	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
32	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
33	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
34		96
35	CBOR_TAG_MAGIC = 55799	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
36	};	98	};
37		99
38	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
39	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_UTF8_STRINGS 0x00000020UL
		106	#define F_VALIDATE_UTF8 0x00000040UL
40		107
41	#define INIT_SIZE 32 // initial scalar size to be allocated	108	#define INIT_SIZE 32 // initial scalar size to be allocated
42		109
43	#define SB do {	110	#define SB do {
44	#define SE } while (0)	111	#define SE } while (0)
…		…
55	#else	122	#else
56	# define CBOR_SLOW 0	123	# define CBOR_SLOW 0
57	# define CBOR_STASH cbor_stash	124	# define CBOR_STASH cbor_stash
58	#endif	125	#endif
59		126
60	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	127	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
61	static SV *cbor_true, *cbor_false;	128	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
62		129
63	typedef struct {	130	typedef struct {
64	U32 flags;	131	U32 flags;
65	U32 max_depth;	132	U32 max_depth;
66	STRLEN max_size;	133	STRLEN max_size;
		134	SV *filter;
		135
		136	// for the incremental parser
		137	STRLEN incr_pos; // the current offset into the text
		138	STRLEN incr_need; // minimum bytes needed to decode
		139	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
67	} CBOR;	140	} CBOR;
68		141
69	ecb_inline void	142	ecb_inline void
70	cbor_init (CBOR *cbor)	143	cbor_init (CBOR *cbor)
71	{	144	{
72	Zero (cbor, 1, CBOR);	145	Zero (cbor, 1, CBOR);
73	cbor->max_depth = 512;	146	cbor->max_depth = 512;
		147	}
		148
		149	ecb_inline void
		150	cbor_free (CBOR *cbor)
		151	{
		152	SvREFCNT_dec (cbor->filter);
		153	SvREFCNT_dec (cbor->incr_count);
74	}	154	}
75		155
76	/////////////////////////////////////////////////////////////////////////////	156	/////////////////////////////////////////////////////////////////////////////
77	// utility functions	157	// utility functions
78		158
…		…
100	SvPV_renew (sv, SvCUR (sv) + 1);	180	SvPV_renew (sv, SvCUR (sv) + 1);
101	#endif	181	#endif
102	}	182	}
103	}	183	}
104		184
105	/////////////////////////////////////////////////////////////////////////////	185	// minimum length of a string to be registered for stringref
106	// fp hell	186	ecb_inline int
107		187	minimum_string_length (UV idx)
108	//TODO	188	{
		189	return idx > 23
		190	? idx > 0xffU
		191	? idx > 0xffffU
		192	? idx > 0xffffffffU
		193	? 11
		194	: 7
		195	: 5
		196	: 4
		197	: 3;
		198	}
109		199
110	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
111	// encoder	201	// encoder
112		202
113	// structure used for encoding CBOR	203	// structure used for encoding CBOR
…		…
116	char *cur; // SvPVX (sv) + current output position	206	char *cur; // SvPVX (sv) + current output position
117	char *end; // SvEND (sv)	207	char *end; // SvEND (sv)
118	SV *sv; // result scalar	208	SV *sv; // result scalar
119	CBOR cbor;	209	CBOR cbor;
120	U32 depth; // recursion level	210	U32 depth; // recursion level
		211	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		212	UV stringref_idx;
		213	HV *shareable; // ptr => index, or 0
		214	UV shareable_idx;
121	} enc_t;	215	} enc_t;
122		216
123	ecb_inline void	217	ecb_inline void
124	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
125	{	219	{
…		…
142	static void	236	static void
143	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
144	{	238	{
145	need (enc, 9);	239	need (enc, 9);
146		240
147	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
148	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
149	else if (len <= 0xff)	243	else if (ecb_expect_true (len <= 0xffU))
150	{	244	{
151	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
152	*enc->cur++ = len;	246	*enc->cur++ = len;
153	}	247	}
154	else if (len <= 0xffff)	248	else if (len <= 0xffffU)
155	{	249	{
156	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
157	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
158	*enc->cur++ = len;	252	*enc->cur++ = len;
159	}	253	}
160	else if (len <= 0xffffffff)	254	else if (len <= 0xffffffffU)
161	{	255	{
162	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
163	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
164	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
165	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
166	*enc->cur++ = len;	260	*enc->cur++ = len;
167	}	261	}
168	else	262	else
169	{	263	{
170	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
171	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
172	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
173	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
174	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
175	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
177	*enc->cur++ = len >> 8;	271	*enc->cur++ = len >> 8;
178	*enc->cur++ = len;	272	*enc->cur++ = len;
179	}	273	}
180	}	274	}
181		275
182	static void	276	ecb_inline void
		277	encode_tag (enc_t *enc, UV tag)
		278	{
		279	encode_uint (enc, MAJOR_TAG, tag);
		280	}
		281
		282	ecb_inline void
183	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
184	{	284	{
185	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	285	if (ecb_expect_false (enc->cbor.flags & F_UTF8_STRINGS))
		286	if (!utf8)
		287	{
		288	SV *sv = sv_newmortal ();
		289	char *s; STRLEN l;
		290
		291	sv_setpvn (sv, str, len);
		292
		293	s = SvPVutf8 (sv, l);
		294	encode_str (enc, 1, s, l);
		295	return;
		296	}
		297
		298	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
186	need (enc, len);	299	need (enc, len);
187	memcpy (enc->cur, str, len);	300	memcpy (enc->cur, str, len);
188	enc->cur += len;	301	enc->cur += len;
189	}	302	}
190		303
		304	static void
		305	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)
		306	{
		307	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		308	{
		309	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		310
		311	if (SvOK (*svp))
		312	{
		313	// already registered, use stringref
		314	encode_tag (enc, CBOR_TAG_STRINGREF);
		315	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		316	return;
		317	}
		318	else if (len >= minimum_string_length (enc->stringref_idx))
		319	{
		320	// register only
		321	sv_setuv (*svp, enc->stringref_idx);
		322	++enc->stringref_idx;
		323	}
		324	}
		325
		326	encode_str (enc, utf8, str, len);
		327	}
		328
191	static void encode_sv (enc_t *enc, SV *sv);	329	static void encode_sv (enc_t *enc, SV *sv);
192		330
193	static void	331	static void
194	encode_av (enc_t *enc, AV *av)	332	encode_av (enc_t *enc, AV *av)
195	{	333	{
…		…
198	if (enc->depth >= enc->cbor.max_depth)	336	if (enc->depth >= enc->cbor.max_depth)
199	croak (ERR_NESTING_EXCEEDED);	337	croak (ERR_NESTING_EXCEEDED);
200		338
201	++enc->depth;	339	++enc->depth;
202		340
203	encode_uint (enc, 0x80, len + 1);	341	encode_uint (enc, MAJOR_ARRAY, len + 1);
204		342
		343	if (SvMAGICAL (av))
205	for (i = 0; i <= len; ++i)	344	for (i = 0; i <= len; ++i)
206	{	345	{
207	SV **svp = av_fetch (av, i, 0);	346	SV **svp = av_fetch (av, i, 0);
208	encode_sv (enc, svp ? *svp : &PL_sv_undef);	347	encode_sv (enc, svp ? *svp : &PL_sv_undef);
209	}	348	}
		349	else
		350	for (i = 0; i <= len; ++i)
		351	{
		352	SV *sv = AvARRAY (av)[i];
		353	encode_sv (enc, sv ? sv : &PL_sv_undef);
		354	}
210		355
211	--enc->depth;	356	--enc->depth;
212	}	357	}
213		358
214	static void	359	static void
…		…
223		368
224	int pairs = hv_iterinit (hv);	369	int pairs = hv_iterinit (hv);
225	int mg = SvMAGICAL (hv);	370	int mg = SvMAGICAL (hv);
226		371
227	if (mg)	372	if (mg)
228	encode_ch (enc, 0xa0 | 31);	373	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
229	else	374	else
230	encode_uint (enc, 0xa0, pairs);	375	encode_uint (enc, MAJOR_MAP, pairs);
231		376
232	while ((he = hv_iternext (hv)))	377	while ((he = hv_iternext (hv)))
233	{	378	{
234	if (HeKLEN (he) == HEf_SVKEY)	379	if (HeKLEN (he) == HEf_SVKEY)
235	encode_sv (enc, HeSVKEY (he));	380	encode_sv (enc, HeSVKEY (he));
236	else	381	else
237	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	382	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
238		383
239	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	384	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
240	}	385	}
241		386
242	if (mg)	387	if (mg)
243	encode_ch (enc, 0xe0 | 31);	388	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
244		389
245	--enc->depth;	390	--enc->depth;
246	}	391	}
247		392
248	// encode objects, arrays and special \0=false and \1=true values.	393	// encode objects, arrays and special \0=false and \1=true values.
249	static void	394	static void
250	encode_rv (enc_t *enc, SV *sv)	395	encode_rv (enc_t *enc, SV *sv)
251	{	396	{
252	svtype svt;
253
254	SvGETMAGIC (sv);	397	SvGETMAGIC (sv);
		398
255	svt = SvTYPE (sv);	399	svtype svt = SvTYPE (sv);
256		400
257	if (ecb_expect_false (SvOBJECT (sv)))	401	if (ecb_expect_false (SvOBJECT (sv)))
258	{	402	{
259	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	403	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
260	? cbor_boolean_stash	404	? types_boolean_stash
261	: gv_stashpv ("CBOR::XS::Boolean", 1);	405	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		406	HV *error_stash = !CBOR_SLOW || types_error_stash
		407	? types_error_stash
		408	: gv_stashpv ("Types::Serialiser::Error", 1);
262	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	409	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
263	? cbor_tagged_stash	410	? cbor_tagged_stash
264	: gv_stashpv ("CBOR::XS::Tagged" , 1);	411	: gv_stashpv ("CBOR::XS::Tagged" , 1);
265		412
		413	HV *stash = SvSTASH (sv);
		414
266	if (SvSTASH (sv) == boolean_stash)	415	if (stash == boolean_stash)
267	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	416	{
		417	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		418	return;
		419	}
		420	else if (stash == error_stash)
		421	{
		422	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		423	return;
		424	}
268	else if (SvSTASH (sv) == tagged_stash)	425	else if (stash == tagged_stash)
269	{	426	{
270	if (svt != SVt_PVAV)	427	if (svt != SVt_PVAV)
271	croak ("encountered CBOR::XS::Tagged object that isn't an array");	428	croak ("encountered CBOR::XS::Tagged object that isn't an array");
272		429
273	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	430	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
274	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	431	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		432
		433	return;
		434	}
		435	}
		436
		437	if (ecb_expect_false (SvREFCNT (sv) > 1)
		438	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		439	{
		440	if (!enc->shareable)
		441	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		442
		443	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		444
		445	if (SvOK (*svp))
		446	{
		447	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		448	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		449	return;
275	}	450	}
276	else	451	else
277	{	452	{
		453	sv_setuv (*svp, enc->shareable_idx);
		454	++enc->shareable_idx;
		455	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		456	}
		457	}
		458
		459	if (ecb_expect_false (SvOBJECT (sv)))
		460	{
		461	HV *stash = SvSTASH (sv);
		462	GV *method;
		463
		464	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		465	{
		466	dSP;
		467
		468	ENTER; SAVETMPS;
		469	PUSHMARK (SP);
278	// we re-bless the reference to get overload and other niceties right	470	// we re-bless the reference to get overload and other niceties right
279	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
280
281	if (to_cbor)
282	{
283	dSP;
284
285	ENTER; SAVETMPS; PUSHMARK (SP);
286	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	471	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
287		472
288	// calling with G_SCALAR ensures that we always get a 1 return value
289	PUTBACK;	473	PUTBACK;
		474	// G_SCALAR ensures that return value is 1
290	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	475	call_sv ((SV *)GvCV (method), G_SCALAR);
291	SPAGAIN;	476	SPAGAIN;
292		477
293	// catch this surprisingly common error	478	// catch this surprisingly common error
294	if (SvROK (TOPs) && SvRV (TOPs) == sv)	479	if (SvROK (TOPs) && SvRV (TOPs) == sv)
295	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	480	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
296		481
297	sv = POPs;	482	encode_sv (enc, POPs);
		483
298	PUTBACK;	484	PUTBACK;
299		485
300	encode_sv (enc, sv);
301
302	FREETMPS; LEAVE;	486	FREETMPS; LEAVE;
303	}	487	}
		488	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		489	{
		490	dSP;
		491
		492	ENTER; SAVETMPS;
		493	SAVESTACK_POS ();
		494	PUSHMARK (SP);
		495	EXTEND (SP, 2);
		496	// we re-bless the reference to get overload and other niceties right
		497	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		498	PUSHs (sv_cbor);
		499
		500	PUTBACK;
		501	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		502	SPAGAIN;
		503
		504	// catch this surprisingly common error
		505	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		506	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		507
		508	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		509	encode_uint (enc, MAJOR_ARRAY, count + 1);
		510	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		511
		512	while (count)
		513	encode_sv (enc, SP[1 - count--]);
		514
		515	PUTBACK;
		516
		517	FREETMPS; LEAVE;
		518	}
304	else	519	else
305	croak ("encountered object '%s', but no TO_CBOR method available on it",	520	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
306	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	521	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
307	}
308	}	522	}
309	else if (svt == SVt_PVHV)	523	else if (svt == SVt_PVHV)
310	encode_hv (enc, (HV *)sv);	524	encode_hv (enc, (HV *)sv);
311	else if (svt == SVt_PVAV)	525	else if (svt == SVt_PVAV)
312	encode_av (enc, (AV *)sv);	526	encode_av (enc, (AV *)sv);
313	else if (svt < SVt_PVAV)
314	{
315	STRLEN len = 0;
316	char *pv = svt ? SvPV (sv, len) : 0;
317
318	if (len == 1 && *pv == '1')
319	encode_ch (enc, 0xe0 | 21);
320	else if (len == 1 && *pv == '0')
321	encode_ch (enc, 0xe0 | 20);
322	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
323	encode_ch (enc, 0xe0 | 23);
324	else
325	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
326	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
327	}
328	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
329	encode_ch (enc, 0xe0 | 23);
330	else	527	else
331	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	528	{
332	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	529	encode_tag (enc, CBOR_TAG_INDIRECTION);
		530	encode_sv (enc, sv);
		531	}
333	}	532	}
334		533
335	static void	534	static void
336	encode_nv (enc_t *enc, SV *sv)	535	encode_nv (enc_t *enc, SV *sv)
337	{	536	{
338	double nv = SvNVX (sv);	537	double nv = SvNVX (sv);
339		538
340	need (enc, 9);	539	need (enc, 9);
341		540
342	if (ecb_expect_false (nv == (U32)nv))	541	if (ecb_expect_false (nv == (NV)(U32)nv))
343	encode_uint (enc, 0x00, (U32)nv);	542	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
344	//TODO: maybe I32?	543	//TODO: maybe I32?
345	else if (ecb_expect_false (nv == (float)nv))	544	else if (ecb_expect_false (nv == (float)nv))
346	{	545	{
347	uint32_t fp = ecb_float_to_binary32 (nv);	546	uint32_t fp = ecb_float_to_binary32 (nv);
348		547
349	*enc->cur++ = 0xe0 | 26;	548	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
350		549
351	if (!ecb_big_endian ())	550	if (!ecb_big_endian ())
352	fp = ecb_bswap32 (fp);	551	fp = ecb_bswap32 (fp);
353		552
354	memcpy (enc->cur, &fp, 4);	553	memcpy (enc->cur, &fp, 4);
…		…
356	}	555	}
357	else	556	else
358	{	557	{
359	uint64_t fp = ecb_double_to_binary64 (nv);	558	uint64_t fp = ecb_double_to_binary64 (nv);
360		559
361	*enc->cur++ = 0xe0 | 27;	560	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
362		561
363	if (!ecb_big_endian ())	562	if (!ecb_big_endian ())
364	fp = ecb_bswap64 (fp);	563	fp = ecb_bswap64 (fp);
365		564
366	memcpy (enc->cur, &fp, 8);	565	memcpy (enc->cur, &fp, 8);
…		…
375		574
376	if (SvPOKp (sv))	575	if (SvPOKp (sv))
377	{	576	{
378	STRLEN len;	577	STRLEN len;
379	char *str = SvPV (sv, len);	578	char *str = SvPV (sv, len);
380	encode_str (enc, SvUTF8 (sv), str, len);	579	encode_strref (enc, SvUTF8 (sv), str, len);
381	}	580	}
382	else if (SvNOKp (sv))	581	else if (SvNOKp (sv))
383	encode_nv (enc, sv);	582	encode_nv (enc, sv);
384	else if (SvIOKp (sv))	583	else if (SvIOKp (sv))
385	{	584	{
386	if (SvIsUV (sv))	585	if (SvIsUV (sv))
387	encode_uint (enc, 0x00, SvUVX (sv));	586	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
388	else if (SvIVX (sv) >= 0)	587	else if (SvIVX (sv) >= 0)
389	encode_uint (enc, 0x00, SvIVX (sv));	588	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
390	else	589	else
391	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	590	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
392	}	591	}
393	else if (SvROK (sv))	592	else if (SvROK (sv))
394	encode_rv (enc, SvRV (sv));	593	encode_rv (enc, SvRV (sv));
395	else if (!SvOK (sv))	594	else if (!SvOK (sv))
396	encode_ch (enc, 0xe0 | 22);	595	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
397	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	596	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
398	encode_ch (enc, 0xe0 | 23);	597	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
399	else	598	else
400	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	599	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
401	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	600	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
402	}	601	}
403		602
404	static SV *	603	static SV *
405	encode_cbor (SV *scalar, CBOR *cbor)	604	encode_cbor (SV *scalar, CBOR *cbor)
406	{	605	{
407	enc_t enc;	606	enc_t enc = { 0 };
408		607
409	enc.cbor = *cbor;	608	enc.cbor = *cbor;
410	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	609	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
411	enc.cur = SvPVX (enc.sv);	610	enc.cur = SvPVX (enc.sv);
412	enc.end = SvEND (enc.sv);	611	enc.end = SvEND (enc.sv);
413	enc.depth = 0;
414		612
415	SvPOK_only (enc.sv);	613	SvPOK_only (enc.sv);
		614
		615	if (cbor->flags & F_PACK_STRINGS)
		616	{
		617	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		618	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		619	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		620	}
		621
416	encode_sv (&enc, scalar);	622	encode_sv (&enc, scalar);
417		623
418	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	624	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
419	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	625	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
420		626
…		…
434	U8 *end; // end of input string	640	U8 *end; // end of input string
435	const char *err; // parse error, if != 0	641	const char *err; // parse error, if != 0
436	CBOR cbor;	642	CBOR cbor;
437	U32 depth; // recursion depth	643	U32 depth; // recursion depth
438	U32 maxdepth; // recursion depth limit	644	U32 maxdepth; // recursion depth limit
		645	AV *shareable;
		646	AV *stringref;
		647	SV *decode_tagged;
439	} dec_t;	648	} dec_t;
440		649
441	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	650	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
442		651
443	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	652	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
…		…
446	#define DEC_DEC_DEPTH --dec->depth	655	#define DEC_DEC_DEPTH --dec->depth
447		656
448	static UV	657	static UV
449	decode_uint (dec_t *dec)	658	decode_uint (dec_t *dec)
450	{	659	{
451	switch (*dec->cur & 31)	660	U8 m = *dec->cur & MINOR_MASK;
452	{	661	++dec->cur;
453	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
454	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
455	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
456	return *dec->cur++ & 31;
457		662
458	case 24:	663	if (ecb_expect_true (m < LENGTH_EXT1))
		664	return m;
		665	else if (ecb_expect_true (m == LENGTH_EXT1))
		666	{
459	WANT (2);	667	WANT (1);
460	dec->cur += 2;	668	dec->cur += 1;
461	return dec->cur[-1];	669	return dec->cur[-1];
462		670	}
463	case 25:	671	else if (ecb_expect_true (m == LENGTH_EXT2))
		672	{
464	WANT (3);	673	WANT (2);
465	dec->cur += 3;	674	dec->cur += 2;
466	return (((UV)dec->cur[-2]) << 8)	675	return (((UV)dec->cur[-2]) << 8)
467	| ((UV)dec->cur[-1]);	676	| ((UV)dec->cur[-1]);
468		677	}
469	case 26:	678	else if (ecb_expect_true (m == LENGTH_EXT4))
		679	{
470	WANT (5);	680	WANT (4);
471	dec->cur += 5;	681	dec->cur += 4;
472	return (((UV)dec->cur[-4]) << 24)	682	return (((UV)dec->cur[-4]) << 24)
473	| (((UV)dec->cur[-3]) << 16)	683	| (((UV)dec->cur[-3]) << 16)
474	| (((UV)dec->cur[-2]) << 8)	684	| (((UV)dec->cur[-2]) << 8)
475	| ((UV)dec->cur[-1]);	685	| ((UV)dec->cur[-1]);
476		686	}
477	case 27:	687	else if (ecb_expect_true (m == LENGTH_EXT8))
		688	{
478	WANT (9);	689	WANT (8);
479	dec->cur += 9;	690	dec->cur += 8;
		691
		692	return
		693	#if UVSIZE < 8
		694	0
		695	#else
480	return (((UV)dec->cur[-8]) << 56)	696	(((UV)dec->cur[-8]) << 56)
481	| (((UV)dec->cur[-7]) << 48)	697	| (((UV)dec->cur[-7]) << 48)
482	| (((UV)dec->cur[-6]) << 40)	698	| (((UV)dec->cur[-6]) << 40)
483	| (((UV)dec->cur[-5]) << 32)	699	| (((UV)dec->cur[-5]) << 32)
		700	#endif
484	| (((UV)dec->cur[-4]) << 24)	701	| (((UV)dec->cur[-4]) << 24)
485	| (((UV)dec->cur[-3]) << 16)	702	| (((UV)dec->cur[-3]) << 16)
486	| (((UV)dec->cur[-2]) << 8)	703	| (((UV)dec->cur[-2]) << 8)
487	| ((UV)dec->cur[-1]);	704	| ((UV)dec->cur[-1]);
488		705	}
489	default:	706	else
490	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	707	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
491	}
492		708
493	fail:	709	fail:
494	return 0;	710	return 0;
495	}	711	}
496		712
…		…
501	{	717	{
502	AV *av = newAV ();	718	AV *av = newAV ();
503		719
504	DEC_INC_DEPTH;	720	DEC_INC_DEPTH;
505		721
506	if ((*dec->cur & 31) == 31)	722	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
507	{	723	{
508	++dec->cur;	724	++dec->cur;
509		725
510	for (;;)	726	for (;;)
511	{	727	{
512	WANT (1);	728	WANT (1);
513		729
514	if (*dec->cur == (0xe0 | 31))	730	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
515	{	731	{
516	++dec->cur;	732	++dec->cur;
517	break;	733	break;
518	}	734	}
519		735
…		…
522	}	738	}
523	else	739	else
524	{	740	{
525	int i, len = decode_uint (dec);	741	int i, len = decode_uint (dec);
526		742
		743	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
527	av_fill (av, len - 1);	744	av_fill (av, len - 1);
528		745
529	for (i = 0; i < len; ++i)	746	for (i = 0; i < len; ++i)
530	AvARRAY (av)[i] = decode_sv (dec);	747	AvARRAY (av)[i] = decode_sv (dec);
531	}	748	}
…		…
537	SvREFCNT_dec (av);	754	SvREFCNT_dec (av);
538	DEC_DEC_DEPTH;	755	DEC_DEC_DEPTH;
539	return &PL_sv_undef;	756	return &PL_sv_undef;
540	}	757	}
541		758
		759	static void
		760	decode_he (dec_t *dec, HV *hv)
		761	{
		762	// for speed reasons, we specialcase single-string
		763	// byte or utf-8 strings as keys, but only when !stringref
		764
		765	if (ecb_expect_true (!dec->stringref))
		766	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		767	{
		768	I32 len = decode_uint (dec);
		769	char *key = (char *)dec->cur;
		770
		771	WANT (len);
		772	dec->cur += len;
		773
		774	hv_store (hv, key, len, decode_sv (dec), 0);
		775
		776	return;
		777	}
		778	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		779	{
		780	I32 len = decode_uint (dec);
		781	char *key = (char *)dec->cur;
		782
		783	WANT (len);
		784	dec->cur += len;
		785
		786	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		787	if (!is_utf8_string (key, len))
		788	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		789
		790	hv_store (hv, key, -len, decode_sv (dec), 0);
		791
		792	return;
		793	}
		794
		795	SV *k = decode_sv (dec);
		796	SV *v = decode_sv (dec);
		797
		798	hv_store_ent (hv, k, v, 0);
		799	SvREFCNT_dec (k);
		800
		801	fail:
		802	;
		803	}
		804
542	static SV *	805	static SV *
543	decode_hv (dec_t *dec)	806	decode_hv (dec_t *dec)
544	{	807	{
545	HV *hv = newHV ();	808	HV *hv = newHV ();
546		809
547	DEC_INC_DEPTH;	810	DEC_INC_DEPTH;
548		811
549	if ((*dec->cur & 31) == 31)	812	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
550	{	813	{
551	++dec->cur;	814	++dec->cur;
552		815
553	for (;;)	816	for (;;)
554	{	817	{
555	WANT (1);	818	WANT (1);
556		819
557	if (*dec->cur == (0xe0 | 31))	820	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
558	{	821	{
559	++dec->cur;	822	++dec->cur;
560	break;	823	break;
561	}	824	}
562		825
563	SV *k = decode_sv (dec);	826	decode_he (dec, hv);
564	SV *v = decode_sv (dec);
565
566	hv_store_ent (hv, k, v, 0);
567	}	827	}
568	}	828	}
569	else	829	else
570	{	830	{
571	int len = decode_uint (dec);	831	int pairs = decode_uint (dec);
572		832
573	while (len--)	833	while (pairs--)
574	{	834	decode_he (dec, hv);
575	SV *k = decode_sv (dec);
576	SV *v = decode_sv (dec);
577
578	hv_store_ent (hv, k, v, 0);
579	}
580	}	835	}
581		836
582	DEC_DEC_DEPTH;	837	DEC_DEC_DEPTH;
583	return newRV_noinc ((SV *)hv);	838	return newRV_noinc ((SV *)hv);
584		839
…		…
591	static SV *	846	static SV *
592	decode_str (dec_t *dec, int utf8)	847	decode_str (dec_t *dec, int utf8)
593	{	848	{
594	SV *sv = 0;	849	SV *sv = 0;
595		850
596	if ((*dec->cur & 31) == 31)	851	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
597	{	852	{
		853	// indefinite length strings
598	++dec->cur;	854	++dec->cur;
599		855
		856	U8 major = *dec->cur & MAJOR_MISC;
		857
600	sv = newSVpvn ("", 0);	858	sv = newSVpvn ("", 0);
601		859
602	// not very fast, and certainly not robust against illegal input
603	for (;;)	860	for (;;)
604	{	861	{
605	WANT (1);	862	WANT (1);
606		863
607	if (*dec->cur == (0xe0 | 31))	864	if ((*dec->cur - major) > LENGTH_EXT8)
		865	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
608	{	866	{
609	++dec->cur;	867	++dec->cur;
610	break;	868	break;
611	}	869	}
		870	else
		871	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
612		872
613	sv_catsv (sv, decode_sv (dec));	873	STRLEN len = decode_uint (dec);
		874
		875	WANT (len);
		876	sv_catpvn (sv, dec->cur, len);
		877	dec->cur += len;
614	}	878	}
615	}	879	}
616	else	880	else
617	{	881	{
618	STRLEN len = decode_uint (dec);	882	STRLEN len = decode_uint (dec);
619		883
620	WANT (len);	884	WANT (len);
621	sv = newSVpvn (dec->cur, len);	885	sv = newSVpvn (dec->cur, len);
622	dec->cur += len;	886	dec->cur += len;
		887
		888	if (ecb_expect_false (dec->stringref)
		889	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		890	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
623	}	891	}
624		892
625	if (utf8)	893	if (utf8)
		894	{
		895	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		896	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		897	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		898
626	SvUTF8_on (sv);	899	SvUTF8_on (sv);
		900	}
627		901
628	return sv;	902	return sv;
629		903
630	fail:	904	fail:
631	SvREFCNT_dec (sv);	905	SvREFCNT_dec (sv);
…		…
633	}	907	}
634		908
635	static SV *	909	static SV *
636	decode_tagged (dec_t *dec)	910	decode_tagged (dec_t *dec)
637	{	911	{
		912	SV *sv = 0;
638	UV tag = decode_uint (dec);	913	UV tag = decode_uint (dec);
		914
		915	WANT (1);
		916
		917	switch (tag)
		918	{
		919	case CBOR_TAG_MAGIC:
639	SV *sv = decode_sv (dec);	920	sv = decode_sv (dec);
		921	break;
640		922
641	if (tag == CBOR_TAG_MAGIC) // 2.4.5 Self-Describe CBOR	923	case CBOR_TAG_INDIRECTION:
		924	sv = newRV_noinc (decode_sv (dec));
		925	break;
		926
		927	case CBOR_TAG_STRINGREF_NAMESPACE:
		928	{
		929	ENTER; SAVETMPS;
		930
		931	SAVESPTR (dec->stringref);
		932	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		933
		934	sv = decode_sv (dec);
		935
		936	FREETMPS; LEAVE;
		937	}
		938	break;
		939
		940	case CBOR_TAG_STRINGREF:
		941	{
		942	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		943	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		944
		945	UV idx = decode_uint (dec);
		946
		947	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		948	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		949
		950	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		951	}
		952	break;
		953
		954	case CBOR_TAG_VALUE_SHAREABLE:
		955	{
		956	if (ecb_expect_false (!dec->shareable))
		957	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		958
		959	if (dec->cbor.flags & F_ALLOW_CYCLES)
		960	{
		961	sv = newSV (0);
		962	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		963
		964	SV *osv = decode_sv (dec);
		965	sv_setsv (sv, osv);
		966	SvREFCNT_dec_NN (osv);
		967	}
		968	else
		969	{
		970	av_push (dec->shareable, &PL_sv_undef);
		971	int idx = AvFILLp (dec->shareable);
		972	sv = decode_sv (dec);
		973	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		974	}
		975	}
		976	break;
		977
		978	case CBOR_TAG_VALUE_SHAREDREF:
		979	{
		980	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		981	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		982
		983	UV idx = decode_uint (dec);
		984
		985	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		986	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		987
		988	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		989
		990	if (sv == &PL_sv_undef)
		991	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		992	}
		993	break;
		994
		995	case CBOR_TAG_PERL_OBJECT:
		996	{
		997	sv = decode_sv (dec);
		998
		999	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1000	ERR ("corrupted CBOR data (non-array perl object)");
		1001
		1002	AV *av = (AV *)SvRV (sv);
		1003	int len = av_len (av) + 1;
		1004	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1005
		1006	if (!stash)
		1007	ERR ("cannot decode perl-object (package does not exist)");
		1008
		1009	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1010
		1011	if (!method)
		1012	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1013
		1014	dSP;
		1015
		1016	ENTER; SAVETMPS;
		1017	PUSHMARK (SP);
		1018	EXTEND (SP, len + 1);
		1019	// we re-bless the reference to get overload and other niceties right
		1020	PUSHs (*av_fetch (av, 0, 1));
		1021	PUSHs (sv_cbor);
		1022
		1023	int i;
		1024
		1025	for (i = 1; i < len; ++i)
		1026	PUSHs (*av_fetch (av, i, 1));
		1027
		1028	PUTBACK;
		1029	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1030	SPAGAIN;
		1031
		1032	if (SvTRUE (ERRSV))
		1033	{
		1034	FREETMPS; LEAVE;
		1035	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1036	}
		1037
		1038	SvREFCNT_dec (sv);
		1039	sv = SvREFCNT_inc (POPs);
		1040
		1041	PUTBACK;
		1042
		1043	FREETMPS; LEAVE;
		1044	}
		1045	break;
		1046
		1047	default:
		1048	{
		1049	sv = decode_sv (dec);
		1050
		1051	dSP;
		1052	ENTER; SAVETMPS;
		1053	SAVESTACK_POS ();
		1054	PUSHMARK (SP);
		1055	EXTEND (SP, 2);
		1056	PUSHs (newSVuv (tag));
		1057	PUSHs (sv);
		1058
		1059	PUTBACK;
		1060	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1061	SPAGAIN;
		1062
		1063	if (SvTRUE (ERRSV))
		1064	{
		1065	FREETMPS; LEAVE;
		1066	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1067	}
		1068
		1069	if (count)
		1070	{
		1071	SvREFCNT_dec (sv);
		1072	sv = SvREFCNT_inc (POPs);
		1073	}
		1074	else
		1075	{
		1076	AV *av = newAV ();
		1077	av_push (av, newSVuv (tag));
		1078	av_push (av, sv);
		1079
		1080	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1081	? cbor_tagged_stash
		1082	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1083	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1084	}
		1085
		1086	PUTBACK;
		1087
		1088	FREETMPS; LEAVE;
		1089	}
		1090	break;
		1091	}
		1092
642	return sv;	1093	return sv;
643		1094
644	AV *av = newAV ();	1095	fail:
645	av_push (av, newSVuv (tag));	1096	SvREFCNT_dec (sv);
646	av_push (av, sv);	1097	return &PL_sv_undef;
647
648	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
649	? cbor_tagged_stash
650	: gv_stashpv ("CBOR::XS::Tagged" , 1);
651
652	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);
653	}	1098	}
654		1099
655	static SV *	1100	static SV *
656	decode_sv (dec_t *dec)	1101	decode_sv (dec_t *dec)
657	{	1102	{
658	WANT (1);	1103	WANT (1);
659		1104
660	switch (*dec->cur >> 5)	1105	switch (*dec->cur >> MAJOR_SHIFT)
661	{	1106	{
662	case 0: // unsigned int	1107	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
663	return newSVuv (decode_uint (dec));	1108	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
664	case 1: // negative int	1109	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
665	return newSViv (-1 - (IV)decode_uint (dec));	1110	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
666	case 2: // octet string	1111	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
667	return decode_str (dec, 0);	1112	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
668	case 3: // utf-8 string	1113	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
669	return decode_str (dec, 1);	1114
670	case 4: // array	1115	case MAJOR_MISC >> MAJOR_SHIFT:
671	return decode_av (dec);
672	case 5: // map
673	return decode_hv (dec);
674	case 6: // tag
675	return decode_tagged (dec);
676	case 7: // misc
677	switch (*dec->cur++ & 31)	1116	switch (*dec->cur++ & MINOR_MASK)
678	{	1117	{
679	case 20:	1118	case SIMPLE_FALSE:
680	#if CBOR_SLOW	1119	#if CBOR_SLOW
681	cbor_false = get_bool ("CBOR::XS::false");	1120	types_false = get_bool ("Types::Serialiser::false");
682	#endif	1121	#endif
683	return newSVsv (cbor_false);	1122	return newSVsv (types_false);
684	case 21:	1123	case SIMPLE_TRUE:
685	#if CBOR_SLOW	1124	#if CBOR_SLOW
686	cbor_true = get_bool ("CBOR::XS::true");	1125	types_true = get_bool ("Types::Serialiser::true");
687	#endif	1126	#endif
688	return newSVsv (cbor_true);	1127	return newSVsv (types_true);
689	case 22:	1128	case SIMPLE_NULL:
690	return newSVsv (&PL_sv_undef);	1129	return newSVsv (&PL_sv_undef);
		1130	case SIMPLE_UNDEF:
		1131	#if CBOR_SLOW
		1132	types_error = get_bool ("Types::Serialiser::error");
		1133	#endif
		1134	return newSVsv (types_error);
691		1135
692	case 25:	1136	case MISC_FLOAT16:
693	{	1137	{
694	WANT (2);	1138	WANT (2);
695		1139
696	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1140	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
697	dec->cur += 2;	1141	dec->cur += 2;
698		1142
699	return newSVnv (ecb_binary16_to_float (fp));	1143	return newSVnv (ecb_binary16_to_float (fp));
700	}	1144	}
701		1145
702	case 26:	1146	case MISC_FLOAT32:
703	{	1147	{
704	uint32_t fp;	1148	uint32_t fp;
705	WANT (4);	1149	WANT (4);
706	memcpy (&fp, dec->cur, 4);	1150	memcpy (&fp, dec->cur, 4);
707	dec->cur += 4;	1151	dec->cur += 4;
…		…
710	fp = ecb_bswap32 (fp);	1154	fp = ecb_bswap32 (fp);
711		1155
712	return newSVnv (ecb_binary32_to_float (fp));	1156	return newSVnv (ecb_binary32_to_float (fp));
713	}	1157	}
714		1158
715	case 27:	1159	case MISC_FLOAT64:
716	{	1160	{
717	uint64_t fp;	1161	uint64_t fp;
718	WANT (8);	1162	WANT (8);
719	memcpy (&fp, dec->cur, 8);	1163	memcpy (&fp, dec->cur, 8);
720	dec->cur += 8;	1164	dec->cur += 8;
…		…
723	fp = ecb_bswap64 (fp);	1167	fp = ecb_bswap64 (fp);
724		1168
725	return newSVnv (ecb_binary64_to_double (fp));	1169	return newSVnv (ecb_binary64_to_double (fp));
726	}	1170	}
727		1171
728	// 0..19 unassigned	1172	// 0..19 unassigned simple
729	// 24 reserved + unassigned (reserved values are not encodable)	1173	// 24 reserved + unassigned simple (reserved values are not encodable)
		1174	// 28-30 unassigned misc
		1175	// 31 break code
730	default:	1176	default:
731	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1177	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
732	}	1178	}
733		1179
734	break;	1180	break;
735	}	1181	}
736		1182
…		…
739	}	1185	}
740		1186
741	static SV *	1187	static SV *
742	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1188	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
743	{	1189	{
744	dec_t dec;	1190	dec_t dec = { 0 };
745	SV *sv;	1191	SV *sv;
		1192	STRLEN len;
		1193	char *data = SvPVbyte (string, len);
746		1194
747	/* work around bugs in 5.10 where manipulating magic values
748	* makes perl ignore the magic in subsequent accesses.
749	* also make a copy of non-PV values, to get them into a clean
750	* state (SvPV should do that, but it's buggy, see below).
751	*/
752	/*SvGETMAGIC (string);*/
753	if (SvMAGICAL (string) || !SvPOK (string))
754	string = sv_2mortal (newSVsv (string));
755
756	SvUPGRADE (string, SVt_PV);
757
758	/* work around a bug in perl 5.10, which causes SvCUR to fail an
759	* assertion with -DDEBUGGING, although SvCUR is documented to
760	* return the xpv_cur field which certainly exists after upgrading.
761	* according to nicholas clark, calling SvPOK fixes this.
762	* But it doesn't fix it, so try another workaround, call SvPV_nolen
763	* and hope for the best.
764	* Damnit, SvPV_nolen still trips over yet another assertion. This
765	* assertion business is seriously broken, try yet another workaround
766	* for the broken -DDEBUGGING.
767	*/
768	{
769	#ifdef DEBUGGING
770	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
771	#else
772	STRLEN offset = SvCUR (string);
773	#endif
774
775	if (offset > cbor->max_size && cbor->max_size)	1195	if (len > cbor->max_size && cbor->max_size)
776	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1196	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
777	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1197	(unsigned long)len, (unsigned long)cbor->max_size);
778	}
779
780	sv_utf8_downgrade (string, 0);
781		1198
782	dec.cbor = *cbor;	1199	dec.cbor = *cbor;
783	dec.cur = (U8 *)SvPVX (string);	1200	dec.cur = (U8 *)data;
784	dec.end = (U8 *)SvEND (string);	1201	dec.end = (U8 *)data + len;
785	dec.err = 0;
786	dec.depth = 0;
787		1202
788	sv = decode_sv (&dec);	1203	sv = decode_sv (&dec);
789		1204
790	if (offset_return)	1205	if (offset_return)
791	*offset_return = dec.cur;	1206	*offset_return = dec.cur;
…		…
794	if (dec.cur != dec.end && !dec.err)	1209	if (dec.cur != dec.end && !dec.err)
795	dec.err = "garbage after CBOR object";	1210	dec.err = "garbage after CBOR object";
796		1211
797	if (dec.err)	1212	if (dec.err)
798	{	1213	{
		1214	if (dec.shareable)
		1215	{
		1216	// need to break cyclic links, which whould all be in shareable
		1217	int i;
		1218	SV **svp;
		1219
		1220	for (i = av_len (dec.shareable) + 1; i--; )
		1221	if ((svp = av_fetch (dec.shareable, i, 0)))
		1222	sv_setsv (*svp, &PL_sv_undef);
		1223	}
		1224
799	SvREFCNT_dec (sv);	1225	SvREFCNT_dec (sv);
800	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1226	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
801	}	1227	}
802		1228
803	sv = sv_2mortal (sv);	1229	sv = sv_2mortal (sv);
804		1230
805	return sv;	1231	return sv;
806	}	1232	}
807		1233
		1234	/////////////////////////////////////////////////////////////////////////////
		1235	// incremental parser
		1236
		1237	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1238
		1239	// returns 0 for notyet, 1 for success or error
		1240	static int
		1241	incr_parse (CBOR *self, SV *cborstr)
		1242	{
		1243	STRLEN cur;
		1244	SvPV (cborstr, cur);
		1245
		1246	while (ecb_expect_true (self->incr_need <= cur))
		1247	{
		1248	// table of integer count bytes
		1249	static I8 incr_len[MINOR_MASK + 1] = {
		1250	0, 0, 0, 0, 0, 0, 0, 0,
		1251	0, 0, 0, 0, 0, 0, 0, 0,
		1252	0, 0, 0, 0, 0, 0, 0, 0,
		1253	1, 2, 4, 8,-1,-1,-1,-2
		1254	};
		1255
		1256	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1257	U8 m = *p & MINOR_MASK;
		1258	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1259	I8 ilen = incr_len[m];
		1260
		1261	self->incr_need = self->incr_pos + 1;
		1262
		1263	if (ecb_expect_false (ilen < 0))
		1264	{
		1265	if (m != MINOR_INDEF)
		1266	return 1; // error
		1267
		1268	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1269	{
		1270	if (count >= 0)
		1271	return 1; // error
		1272
		1273	count = 1;
		1274	}
		1275	else
		1276	{
		1277	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1278	count = -1;
		1279	}
		1280	}
		1281	else
		1282	{
		1283	self->incr_need += ilen;
		1284	if (ecb_expect_false (self->incr_need > cur))
		1285	return 0;
		1286
		1287	int major = *p >> MAJOR_SHIFT;
		1288
		1289	switch (major)
		1290	{
		1291	case MAJOR_TAG >> MAJOR_SHIFT:
		1292	++count; // tags merely prefix another value
		1293	break;
		1294
		1295	case MAJOR_BYTES >> MAJOR_SHIFT:
		1296	case MAJOR_TEXT >> MAJOR_SHIFT:
		1297	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1298	case MAJOR_MAP >> MAJOR_SHIFT:
		1299	{
		1300	UV len;
		1301
		1302	if (ecb_expect_false (ilen))
		1303	{
		1304	len = 0;
		1305
		1306	do {
		1307	len = (len << 8) | *++p;
		1308	} while (--ilen);
		1309	}
		1310	else
		1311	len = m;
		1312
		1313	switch (major)
		1314	{
		1315	case MAJOR_BYTES >> MAJOR_SHIFT:
		1316	case MAJOR_TEXT >> MAJOR_SHIFT:
		1317	self->incr_need += len;
		1318	if (ecb_expect_false (self->incr_need > cur))
		1319	return 0;
		1320
		1321	break;
		1322
		1323	case MAJOR_MAP >> MAJOR_SHIFT:
		1324	len <<= 1;
		1325	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1326	if (len)
		1327	{
		1328	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1329	count = len + 1;
		1330	}
		1331	break;
		1332	}
		1333	}
		1334	}
		1335	}
		1336
		1337	self->incr_pos = self->incr_need;
		1338
		1339	if (count > 0)
		1340	{
		1341	while (!--count)
		1342	{
		1343	if (!AvFILLp (self->incr_count))
		1344	return 1; // done
		1345
		1346	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1347	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1348	}
		1349
		1350	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1351	}
		1352	}
		1353
		1354	return 0;
		1355	}
		1356
		1357
808	/////////////////////////////////////////////////////////////////////////////	1358	/////////////////////////////////////////////////////////////////////////////
809	// XS interface functions	1359	// XS interface functions
810		1360
811	MODULE = CBOR::XS PACKAGE = CBOR::XS	1361	MODULE = CBOR::XS PACKAGE = CBOR::XS
812		1362
813	BOOT:	1363	BOOT:
814	{	1364	{
815	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1365	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
816	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
817	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1366	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
818		1367
819	cbor_true = get_bool ("CBOR::XS::true");	1368	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
820	cbor_false = get_bool ("CBOR::XS::false");	1369	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1370
		1371	types_true = get_bool ("Types::Serialiser::true" );
		1372	types_false = get_bool ("Types::Serialiser::false");
		1373	types_error = get_bool ("Types::Serialiser::error");
		1374
		1375	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1376
		1377	sv_cbor = newSVpv ("CBOR", 0);
		1378	SvREADONLY_on (sv_cbor);
821	}	1379	}
822		1380
823	PROTOTYPES: DISABLE	1381	PROTOTYPES: DISABLE
824		1382
825	void CLONE (...)	1383	void CLONE (...)
826	CODE:	1384	CODE:
827	cbor_stash = 0;	1385	cbor_stash = 0;
828	cbor_boolean_stash = 0;
829	cbor_tagged_stash = 0;	1386	cbor_tagged_stash = 0;
		1387	types_error_stash = 0;
		1388	types_boolean_stash = 0;
830		1389
831	void new (char *klass)	1390	void new (char *klass)
832	PPCODE:	1391	PPCODE:
833	{	1392	{
834	SV *pv = NEWSV (0, sizeof (CBOR));	1393	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
842		1401
843	void shrink (CBOR *self, int enable = 1)	1402	void shrink (CBOR *self, int enable = 1)
844	ALIAS:	1403	ALIAS:
845	shrink = F_SHRINK	1404	shrink = F_SHRINK
846	allow_unknown = F_ALLOW_UNKNOWN	1405	allow_unknown = F_ALLOW_UNKNOWN
		1406	allow_sharing = F_ALLOW_SHARING
		1407	allow_cycles = F_ALLOW_CYCLES
		1408	pack_strings = F_PACK_STRINGS
		1409	utf8_strings = F_UTF8_STRINGS
		1410	validate_utf8 = F_VALIDATE_UTF8
847	PPCODE:	1411	PPCODE:
848	{	1412	{
849	if (enable)	1413	if (enable)
850	self->flags |= ix;	1414	self->flags |= ix;
851	else	1415	else
…		…
856		1420
857	void get_shrink (CBOR *self)	1421	void get_shrink (CBOR *self)
858	ALIAS:	1422	ALIAS:
859	get_shrink = F_SHRINK	1423	get_shrink = F_SHRINK
860	get_allow_unknown = F_ALLOW_UNKNOWN	1424	get_allow_unknown = F_ALLOW_UNKNOWN
		1425	get_allow_sharing = F_ALLOW_SHARING
		1426	get_allow_cycles = F_ALLOW_CYCLES
		1427	get_pack_strings = F_PACK_STRINGS
		1428	get_validate_utf8 = F_VALIDATE_UTF8
861	PPCODE:	1429	PPCODE:
862	XPUSHs (boolSV (self->flags & ix));	1430	XPUSHs (boolSV (self->flags & ix));
863		1431
864	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1432	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
865	PPCODE:	1433	PPCODE:
…		…
881	CODE:	1449	CODE:
882	RETVAL = self->max_size;	1450	RETVAL = self->max_size;
883	OUTPUT:	1451	OUTPUT:
884	RETVAL	1452	RETVAL
885		1453
886	#if 0 //TODO	1454	void filter (CBOR *self, SV *filter = 0)
887
888	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
889	PPCODE:	1455	PPCODE:
890	{
891	SvREFCNT_dec (self->cb_object);	1456	SvREFCNT_dec (self->filter);
892	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1457	self->filter = filter ? newSVsv (filter) : filter;
893
894	XPUSHs (ST (0));	1458	XPUSHs (ST (0));
895	}
896		1459
897	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1460	SV *get_filter (CBOR *self)
898	PPCODE:	1461	CODE:
899	{	1462	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
900	if (!self->cb_sk_object)	1463	OUTPUT:
901	self->cb_sk_object = newHV ();	1464	RETVAL
902
903	if (SvOK (cb))
904	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
905	else
906	{
907	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
908
909	if (!HvKEYS (self->cb_sk_object))
910	{
911	SvREFCNT_dec (self->cb_sk_object);
912	self->cb_sk_object = 0;
913	}
914	}
915
916	XPUSHs (ST (0));
917	}
918
919	#endif
920		1465
921	void encode (CBOR *self, SV *scalar)	1466	void encode (CBOR *self, SV *scalar)
922	PPCODE:	1467	PPCODE:
923	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1468	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
924	XPUSHs (scalar);	1469	XPUSHs (scalar);
…		…
937	EXTEND (SP, 2);	1482	EXTEND (SP, 2);
938	PUSHs (sv);	1483	PUSHs (sv);
939	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1484	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
940	}	1485	}
941		1486
942	#if 0	1487	void incr_parse (CBOR *self, SV *cborstr)
		1488	ALIAS:
		1489	incr_parse_multiple = 1
		1490	PPCODE:
		1491	{
		1492	if (SvUTF8 (cborstr))
		1493	sv_utf8_downgrade (cborstr, 0);
		1494
		1495	if (!self->incr_count)
		1496	{
		1497	self->incr_count = newAV ();
		1498	self->incr_pos = 0;
		1499	self->incr_need = 1;
		1500
		1501	av_push (self->incr_count, newSViv (1));
		1502	}
		1503
		1504	do
		1505	{
		1506	if (!incr_parse (self, cborstr))
		1507	{
		1508	if (self->incr_need > self->max_size && self->max_size)
		1509	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1510	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1511
		1512	break;
		1513	}
		1514
		1515	SV *sv;
		1516	char *offset;
		1517
		1518	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1519	XPUSHs (sv);
		1520
		1521	sv_chop (cborstr, offset);
		1522
		1523	av_clear (self->incr_count);
		1524	av_push (self->incr_count, newSViv (1));
		1525
		1526	self->incr_pos = 0;
		1527	self->incr_need = self->incr_pos + 1;
		1528	}
		1529	while (ix);
		1530	}
		1531
		1532	void incr_reset (CBOR *self)
		1533	CODE:
		1534	{
		1535	SvREFCNT_dec (self->incr_count);
		1536	self->incr_count = 0;
		1537	}
943		1538
944	void DESTROY (CBOR *self)	1539	void DESTROY (CBOR *self)
945	CODE:	1540	PPCODE:
946	SvREFCNT_dec (self->cb_sk_object);	1541	cbor_free (self);
947	SvREFCNT_dec (self->cb_object);
948
949	#endif
950		1542
951	PROTOTYPES: ENABLE	1543	PROTOTYPES: ENABLE
952		1544
953	void encode_cbor (SV *scalar)	1545	void encode_cbor (SV *scalar)
		1546	ALIAS:
		1547	encode_cbor = 0
		1548	encode_cbor_sharing = F_ALLOW_SHARING
954	PPCODE:	1549	PPCODE:
955	{	1550	{
956	CBOR cbor;	1551	CBOR cbor;
957	cbor_init (&cbor);	1552	cbor_init (&cbor);
		1553	cbor.flags |= ix;
958	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1554	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
959	XPUSHs (scalar);	1555	XPUSHs (scalar);
960	}	1556	}
961		1557
962	void decode_cbor (SV *cborstr)	1558	void decode_cbor (SV *cborstr)

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