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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.7 by root, Sat Oct 26 23:02:55 2013 UTC vs.
Revision 1.55 by root, Fri Nov 25 06:13:16 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
		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
		67	enum cbor_tag
		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
		79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		81	CBOR_TAG_POS_BIGNUM = 2, // byte string
		82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		84	CBOR_TAG_BIGFLOAT = 5, // array
		85
		86	CBOR_TAG_CONV_B64U = 21, // base64url, any
		87	CBOR_TAG_CONV_B64 = 22, // base64, any
		88	CBOR_TAG_CONV_HEX = 23, // base16, any
		89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		90
		91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		96
		97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		98	};
		99
14	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
15	#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_TEXT_KEYS 0x00000020UL
		106	#define F_TEXT_STRINGS 0x00000040UL
		107	#define F_VALIDATE_UTF8 0x00000080UL
16		108
17	#define INIT_SIZE 32 // initial scalar size to be allocated	109	#define INIT_SIZE 32 // initial scalar size to be allocated
18		110
19	#define SB do {	111	#define SB do {
20	#define SE } while (0)	112	#define SE } while (0)
…		…
31	#else	123	#else
32	# define CBOR_SLOW 0	124	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	125	# define CBOR_STASH cbor_stash
34	#endif	126	#endif
35		127
36	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	128	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	129	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		130
39	typedef struct {	131	typedef struct {
40	U32 flags;	132	U32 flags;
41	U32 max_depth;	133	U32 max_depth;
42	STRLEN max_size;	134	STRLEN max_size;
		135	SV *filter;
		136
		137	// for the incremental parser
		138	STRLEN incr_pos; // the current offset into the text
		139	STRLEN incr_need; // minimum bytes needed to decode
		140	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
43	} CBOR;	141	} CBOR;
44		142
45	ecb_inline void	143	ecb_inline void
46	cbor_init (CBOR *cbor)	144	cbor_init (CBOR *cbor)
47	{	145	{
48	Zero (cbor, 1, CBOR);	146	Zero (cbor, 1, CBOR);
49	cbor->max_depth = 512;	147	cbor->max_depth = 512;
		148	}
		149
		150	ecb_inline void
		151	cbor_free (CBOR *cbor)
		152	{
		153	SvREFCNT_dec (cbor->filter);
		154	SvREFCNT_dec (cbor->incr_count);
50	}	155	}
51		156
52	/////////////////////////////////////////////////////////////////////////////	157	/////////////////////////////////////////////////////////////////////////////
53	// utility functions	158	// utility functions
54		159
…		…
76	SvPV_renew (sv, SvCUR (sv) + 1);	181	SvPV_renew (sv, SvCUR (sv) + 1);
77	#endif	182	#endif
78	}	183	}
79	}	184	}
80		185
81	/////////////////////////////////////////////////////////////////////////////	186	// minimum length of a string to be registered for stringref
82	// fp hell	187	ecb_inline int
83		188	minimum_string_length (UV idx)
84	//TODO	189	{
		190	return idx > 23
		191	? idx > 0xffU
		192	? idx > 0xffffU
		193	? idx > 0xffffffffU
		194	? 11
		195	: 7
		196	: 5
		197	: 4
		198	: 3;
		199	}
85		200
86	/////////////////////////////////////////////////////////////////////////////	201	/////////////////////////////////////////////////////////////////////////////
87	// encoder	202	// encoder
88		203
89	// structure used for encoding CBOR	204	// structure used for encoding CBOR
…		…
92	char *cur; // SvPVX (sv) + current output position	207	char *cur; // SvPVX (sv) + current output position
93	char *end; // SvEND (sv)	208	char *end; // SvEND (sv)
94	SV *sv; // result scalar	209	SV *sv; // result scalar
95	CBOR cbor;	210	CBOR cbor;
96	U32 depth; // recursion level	211	U32 depth; // recursion level
		212	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		213	UV stringref_idx;
		214	HV *shareable; // ptr => index, or 0
		215	UV shareable_idx;
97	} enc_t;	216	} enc_t;
98		217
99	ecb_inline void	218	ecb_inline void
100	need (enc_t *enc, STRLEN len)	219	need (enc_t *enc, STRLEN len)
101	{	220	{
…		…
118	static void	237	static void
119	encode_uint (enc_t *enc, int major, UV len)	238	encode_uint (enc_t *enc, int major, UV len)
120	{	239	{
121	need (enc, 9);	240	need (enc, 9);
122		241
123	if (len < 24)	242	if (ecb_expect_true (len < LENGTH_EXT1))
124	*enc->cur++ = major | len;	243	*enc->cur++ = major | len;
125	else if (len <= 0xff)	244	else if (ecb_expect_true (len <= 0xffU))
126	{	245	{
127	*enc->cur++ = major | 24;	246	*enc->cur++ = major | LENGTH_EXT1;
128	*enc->cur++ = len;	247	*enc->cur++ = len;
129	}	248	}
130	else if (len <= 0xffff)	249	else if (len <= 0xffffU)
131	{	250	{
132	*enc->cur++ = major | 25;	251	*enc->cur++ = major | LENGTH_EXT2;
133	*enc->cur++ = len >> 8;	252	*enc->cur++ = len >> 8;
134	*enc->cur++ = len;	253	*enc->cur++ = len;
135	}	254	}
136	else if (len <= 0xffffffff)	255	else if (len <= 0xffffffffU)
137	{	256	{
138	*enc->cur++ = major | 26;	257	*enc->cur++ = major | LENGTH_EXT4;
139	*enc->cur++ = len >> 24;	258	*enc->cur++ = len >> 24;
140	*enc->cur++ = len >> 16;	259	*enc->cur++ = len >> 16;
141	*enc->cur++ = len >> 8;	260	*enc->cur++ = len >> 8;
142	*enc->cur++ = len;	261	*enc->cur++ = len;
143	}	262	}
144	else	263	else
145	{	264	{
146	*enc->cur++ = major | 27;	265	*enc->cur++ = major | LENGTH_EXT8;
147	*enc->cur++ = len >> 56;	266	*enc->cur++ = len >> 56;
148	*enc->cur++ = len >> 48;	267	*enc->cur++ = len >> 48;
149	*enc->cur++ = len >> 40;	268	*enc->cur++ = len >> 40;
150	*enc->cur++ = len >> 32;	269	*enc->cur++ = len >> 32;
151	*enc->cur++ = len >> 24;	270	*enc->cur++ = len >> 24;
…		…
153	*enc->cur++ = len >> 8;	272	*enc->cur++ = len >> 8;
154	*enc->cur++ = len;	273	*enc->cur++ = len;
155	}	274	}
156	}	275	}
157		276
158	static void	277	ecb_inline void
		278	encode_tag (enc_t *enc, UV tag)
		279	{
		280	encode_uint (enc, MAJOR_TAG, tag);
		281	}
		282
		283	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		284	ecb_noinline static void
159	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	285	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
160	{	286	{
161	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	287	STRLEN ulen = len;
		288	U8 *p, *pend = (U8 *)str + len;
		289
		290	for (p = (U8 *)str; p < pend; ++p)
		291	ulen += *p >> 7; // count set high bits
		292
		293	encode_uint (enc, MAJOR_TEXT, ulen);
		294
		295	need (enc, ulen);
		296	for (p = (U8 *)str; p < pend; ++p)
		297	if (*p < 0x80)
		298	*enc->cur++ = *p;
		299	else
		300	{
		301	*enc->cur++ = 0xc0 + (*p >> 6);
		302	*enc->cur++ = 0x80 + (*p & 63);
		303	}
		304	}
		305
		306	ecb_inline void
		307	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		308	{
		309	if (ecb_expect_false (upgrade_utf8))
		310	if (!utf8)
		311	{
		312	encode_str_utf8 (enc, utf8, str, len);
		313	return;
		314	}
		315
		316	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
162	need (enc, len);	317	need (enc, len);
163	memcpy (enc->cur, str, len);	318	memcpy (enc->cur, str, len);
164	enc->cur += len;	319	enc->cur += len;
165	}	320	}
166		321
		322	ecb_inline void
		323	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		324	{
		325	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		326	{
		327	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		328
		329	if (SvOK (*svp))
		330	{
		331	// already registered, use stringref
		332	encode_tag (enc, CBOR_TAG_STRINGREF);
		333	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		334	return;
		335	}
		336	else if (len >= minimum_string_length (enc->stringref_idx))
		337	{
		338	// register only
		339	sv_setuv (*svp, enc->stringref_idx);
		340	++enc->stringref_idx;
		341	}
		342	}
		343
		344	encode_str (enc, upgrade_utf8, utf8, str, len);
		345	}
		346
167	static void encode_sv (enc_t *enc, SV *sv);	347	static void encode_sv (enc_t *enc, SV *sv);
168		348
169	static void	349	static void
170	encode_av (enc_t *enc, AV *av)	350	encode_av (enc_t *enc, AV *av)
171	{	351	{
…		…
174	if (enc->depth >= enc->cbor.max_depth)	354	if (enc->depth >= enc->cbor.max_depth)
175	croak (ERR_NESTING_EXCEEDED);	355	croak (ERR_NESTING_EXCEEDED);
176		356
177	++enc->depth;	357	++enc->depth;
178		358
179	encode_uint (enc, 0x80, len + 1);	359	encode_uint (enc, MAJOR_ARRAY, len + 1);
180		360
		361	if (SvMAGICAL (av))
181	for (i = 0; i <= len; ++i)	362	for (i = 0; i <= len; ++i)
182	{	363	{
183	SV **svp = av_fetch (av, i, 0);	364	SV **svp = av_fetch (av, i, 0);
184	encode_sv (enc, svp ? *svp : &PL_sv_undef);	365	encode_sv (enc, svp ? *svp : &PL_sv_undef);
185	}	366	}
		367	else
		368	for (i = 0; i <= len; ++i)
		369	{
		370	SV *sv = AvARRAY (av)[i];
		371	encode_sv (enc, sv ? sv : &PL_sv_undef);
		372	}
186		373
187	--enc->depth;	374	--enc->depth;
188	}	375	}
189		376
190	static void	377	static void
…		…
199		386
200	int pairs = hv_iterinit (hv);	387	int pairs = hv_iterinit (hv);
201	int mg = SvMAGICAL (hv);	388	int mg = SvMAGICAL (hv);
202		389
203	if (mg)	390	if (mg)
204	encode_ch (enc, 0xa0 | 31);	391	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
205	else	392	else
206	encode_uint (enc, 0xa0, pairs);	393	encode_uint (enc, MAJOR_MAP, pairs);
207		394
208	while ((he = hv_iternext (hv)))	395	while ((he = hv_iternext (hv)))
209	{	396	{
210	if (HeKLEN (he) == HEf_SVKEY)	397	if (HeKLEN (he) == HEf_SVKEY)
211	encode_sv (enc, HeSVKEY (he));	398	encode_sv (enc, HeSVKEY (he));
212	else	399	else
213	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	400	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
214		401
215	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	402	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
216	}	403	}
217		404
218	if (mg)	405	if (mg)
219	encode_ch (enc, 0xe0 | 31);	406	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
220		407
221	--enc->depth;	408	--enc->depth;
222	}	409	}
223		410
224	// encode objects, arrays and special \0=false and \1=true values.	411	// encode objects, arrays and special \0=false and \1=true values.
225	static void	412	static void
226	encode_rv (enc_t *enc, SV *sv)	413	encode_rv (enc_t *enc, SV *sv)
227	{	414	{
228	svtype svt;
229
230	SvGETMAGIC (sv);	415	SvGETMAGIC (sv);
		416
231	svt = SvTYPE (sv);	417	svtype svt = SvTYPE (sv);
232		418
233	if (ecb_expect_false (SvOBJECT (sv)))	419	if (ecb_expect_false (SvOBJECT (sv)))
234	{	420	{
235	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	421	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
236	? cbor_boolean_stash	422	? types_boolean_stash
237	: gv_stashpv ("CBOR::XS::Boolean", 1);	423	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		424	HV *error_stash = !CBOR_SLOW || types_error_stash
		425	? types_error_stash
		426	: gv_stashpv ("Types::Serialiser::Error", 1);
238	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	427	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
239	? cbor_tagged_stash	428	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Tagged" , 1);	429	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		430
		431	HV *stash = SvSTASH (sv);
		432
242	if (SvSTASH (sv) == boolean_stash)	433	if (stash == boolean_stash)
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	434	{
		435	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		436	return;
		437	}
		438	else if (stash == error_stash)
		439	{
		440	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		441	return;
		442	}
244	else if (SvSTASH (sv) == tagged_stash)	443	else if (stash == tagged_stash)
245	{	444	{
246	if (svt != SVt_PVAV)	445	if (svt != SVt_PVAV)
247	croak ("encountered CBOR::XS::Tagged object that isn't an array");	446	croak ("encountered CBOR::XS::Tagged object that isn't an array");
248		447
249	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	448	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
250	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	449	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		450
		451	return;
		452	}
		453	}
		454
		455	if (ecb_expect_false (SvREFCNT (sv) > 1)
		456	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		457	{
		458	if (!enc->shareable)
		459	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		460
		461	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		462
		463	if (SvOK (*svp))
		464	{
		465	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		466	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		467	return;
251	}	468	}
252	else	469	else
253	{	470	{
		471	sv_setuv (*svp, enc->shareable_idx);
		472	++enc->shareable_idx;
		473	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		474	}
		475	}
		476
		477	if (ecb_expect_false (SvOBJECT (sv)))
		478	{
		479	HV *stash = SvSTASH (sv);
		480	GV *method;
		481
		482	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		483	{
		484	dSP;
		485
		486	ENTER; SAVETMPS;
		487	PUSHMARK (SP);
254	// we re-bless the reference to get overload and other niceties right	488	// we re-bless the reference to get overload and other niceties right
255	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
256
257	if (to_cbor)
258	{
259	dSP;
260
261	ENTER; SAVETMPS; PUSHMARK (SP);
262	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	489	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
263		490
264	// calling with G_SCALAR ensures that we always get a 1 return value
265	PUTBACK;	491	PUTBACK;
		492	// G_SCALAR ensures that return value is 1
266	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	493	call_sv ((SV *)GvCV (method), G_SCALAR);
267	SPAGAIN;	494	SPAGAIN;
268		495
269	// catch this surprisingly common error	496	// catch this surprisingly common error
270	if (SvROK (TOPs) && SvRV (TOPs) == sv)	497	if (SvROK (TOPs) && SvRV (TOPs) == sv)
271	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	498	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
272		499
273	sv = POPs;	500	encode_sv (enc, POPs);
		501
274	PUTBACK;	502	PUTBACK;
275		503
276	encode_sv (enc, sv);
277
278	FREETMPS; LEAVE;	504	FREETMPS; LEAVE;
279	}	505	}
		506	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		507	{
		508	dSP;
		509
		510	ENTER; SAVETMPS;
		511	SAVESTACK_POS ();
		512	PUSHMARK (SP);
		513	EXTEND (SP, 2);
		514	// we re-bless the reference to get overload and other niceties right
		515	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		516	PUSHs (sv_cbor);
		517
		518	PUTBACK;
		519	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		520	SPAGAIN;
		521
		522	// catch this surprisingly common error
		523	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		524	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		525
		526	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		527	encode_uint (enc, MAJOR_ARRAY, count + 1);
		528	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		529
		530	while (count)
		531	encode_sv (enc, SP[1 - count--]);
		532
		533	PUTBACK;
		534
		535	FREETMPS; LEAVE;
		536	}
280	else	537	else
281	croak ("encountered object '%s', but no TO_CBOR method available on it",	538	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
282	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	539	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
283	}
284	}	540	}
285	else if (svt == SVt_PVHV)	541	else if (svt == SVt_PVHV)
286	encode_hv (enc, (HV *)sv);	542	encode_hv (enc, (HV *)sv);
287	else if (svt == SVt_PVAV)	543	else if (svt == SVt_PVAV)
288	encode_av (enc, (AV *)sv);	544	encode_av (enc, (AV *)sv);
289	else if (svt < SVt_PVAV)
290	{
291	STRLEN len = 0;
292	char *pv = svt ? SvPV (sv, len) : 0;
293
294	if (len == 1 && *pv == '1')
295	encode_ch (enc, 0xe0 | 21);
296	else if (len == 1 && *pv == '0')
297	encode_ch (enc, 0xe0 | 20);
298	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
299	encode_ch (enc, 0xe0 | 23);
300	else
301	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
302	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
303	}
304	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
305	encode_ch (enc, 0xe0 | 23);
306	else	545	else
307	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	546	{
308	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	547	encode_tag (enc, CBOR_TAG_INDIRECTION);
		548	encode_sv (enc, sv);
		549	}
309	}	550	}
310		551
311	static void	552	static void
312	encode_nv (enc_t *enc, SV *sv)	553	encode_nv (enc_t *enc, SV *sv)
313	{	554	{
314	double nv = SvNVX (sv);	555	double nv = SvNVX (sv);
315		556
316	need (enc, 9);	557	need (enc, 9);
317		558
318	if (ecb_expect_false (nv == (U32)nv))	559	if (ecb_expect_false (nv == (NV)(U32)nv))
319	encode_uint (enc, 0x00, (U32)nv);	560	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
320	//TODO: maybe I32?	561	//TODO: maybe I32?
321	else if (ecb_expect_false (nv == (float)nv))	562	else if (ecb_expect_false (nv == (float)nv))
322	{	563	{
323	uint32_t fp = ecb_float_to_binary32 (nv);	564	uint32_t fp = ecb_float_to_binary32 (nv);
324		565
325	*enc->cur++ = 0xe0 | 26;	566	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
326		567
327	if (!ecb_big_endian ())	568	if (!ecb_big_endian ())
328	fp = ecb_bswap32 (fp);	569	fp = ecb_bswap32 (fp);
329		570
330	memcpy (enc->cur, &fp, 4);	571	memcpy (enc->cur, &fp, 4);
…		…
332	}	573	}
333	else	574	else
334	{	575	{
335	uint64_t fp = ecb_double_to_binary64 (nv);	576	uint64_t fp = ecb_double_to_binary64 (nv);
336		577
337	*enc->cur++ = 0xe0 | 27;	578	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
338		579
339	if (!ecb_big_endian ())	580	if (!ecb_big_endian ())
340	fp = ecb_bswap64 (fp);	581	fp = ecb_bswap64 (fp);
341		582
342	memcpy (enc->cur, &fp, 8);	583	memcpy (enc->cur, &fp, 8);
…		…
351		592
352	if (SvPOKp (sv))	593	if (SvPOKp (sv))
353	{	594	{
354	STRLEN len;	595	STRLEN len;
355	char *str = SvPV (sv, len);	596	char *str = SvPV (sv, len);
356	encode_str (enc, SvUTF8 (sv), str, len);	597	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
357	}	598	}
358	else if (SvNOKp (sv))	599	else if (SvNOKp (sv))
359	encode_nv (enc, sv);	600	encode_nv (enc, sv);
360	else if (SvIOKp (sv))	601	else if (SvIOKp (sv))
361	{	602	{
362	if (SvIsUV (sv))	603	if (SvIsUV (sv))
363	encode_uint (enc, 0x00, SvUVX (sv));	604	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
364	else if (SvIVX (sv) >= 0)	605	else if (SvIVX (sv) >= 0)
365	encode_uint (enc, 0x00, SvIVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
366	else	607	else
367	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	608	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
368	}	609	}
369	else if (SvROK (sv))	610	else if (SvROK (sv))
370	encode_rv (enc, SvRV (sv));	611	encode_rv (enc, SvRV (sv));
371	else if (!SvOK (sv))	612	else if (!SvOK (sv))
372	encode_ch (enc, 0xe0 | 22);	613	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
373	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	614	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
374	encode_ch (enc, 0xe0 | 23);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
375	else	616	else
376	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	617	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
377	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	618	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
378	}	619	}
379		620
380	static SV *	621	static SV *
381	encode_cbor (SV *scalar, CBOR *cbor)	622	encode_cbor (SV *scalar, CBOR *cbor)
382	{	623	{
383	enc_t enc;	624	enc_t enc = { 0 };
384		625
385	enc.cbor = *cbor;	626	enc.cbor = *cbor;
386	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	627	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
387	enc.cur = SvPVX (enc.sv);	628	enc.cur = SvPVX (enc.sv);
388	enc.end = SvEND (enc.sv);	629	enc.end = SvEND (enc.sv);
389	enc.depth = 0;
390		630
391	SvPOK_only (enc.sv);	631	SvPOK_only (enc.sv);
		632
		633	if (cbor->flags & F_PACK_STRINGS)
		634	{
		635	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		636	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		637	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		638	}
		639
392	encode_sv (&enc, scalar);	640	encode_sv (&enc, scalar);
393		641
394	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	642	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
395	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	643	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
396		644
…		…
410	U8 *end; // end of input string	658	U8 *end; // end of input string
411	const char *err; // parse error, if != 0	659	const char *err; // parse error, if != 0
412	CBOR cbor;	660	CBOR cbor;
413	U32 depth; // recursion depth	661	U32 depth; // recursion depth
414	U32 maxdepth; // recursion depth limit	662	U32 maxdepth; // recursion depth limit
		663	AV *shareable;
		664	AV *stringref;
		665	SV *decode_tagged;
415	} dec_t;	666	} dec_t;
416		667
417	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	668	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
418		669
419	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	670	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
…		…
422	#define DEC_DEC_DEPTH --dec->depth	673	#define DEC_DEC_DEPTH --dec->depth
423		674
424	static UV	675	static UV
425	decode_uint (dec_t *dec)	676	decode_uint (dec_t *dec)
426	{	677	{
427	switch (*dec->cur & 31)	678	U8 m = *dec->cur & MINOR_MASK;
428	{	679	++dec->cur;
429	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
430	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
431	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
432	return *dec->cur++ & 31;
433		680
434	case 24:	681	if (ecb_expect_true (m < LENGTH_EXT1))
		682	return m;
		683	else if (ecb_expect_true (m == LENGTH_EXT1))
		684	{
435	WANT (2);	685	WANT (1);
436	dec->cur += 2;	686	dec->cur += 1;
437	return dec->cur[-1];	687	return dec->cur[-1];
438		688	}
439	case 25:	689	else if (ecb_expect_true (m == LENGTH_EXT2))
		690	{
440	WANT (3);	691	WANT (2);
441	dec->cur += 3;	692	dec->cur += 2;
442	return (((UV)dec->cur[-2]) << 8)	693	return (((UV)dec->cur[-2]) << 8)
443	| ((UV)dec->cur[-1]);	694	| ((UV)dec->cur[-1]);
444		695	}
445	case 26:	696	else if (ecb_expect_true (m == LENGTH_EXT4))
		697	{
446	WANT (5);	698	WANT (4);
447	dec->cur += 5;	699	dec->cur += 4;
448	return (((UV)dec->cur[-4]) << 24)	700	return (((UV)dec->cur[-4]) << 24)
449	| (((UV)dec->cur[-3]) << 16)	701	| (((UV)dec->cur[-3]) << 16)
450	| (((UV)dec->cur[-2]) << 8)	702	| (((UV)dec->cur[-2]) << 8)
451	| ((UV)dec->cur[-1]);	703	| ((UV)dec->cur[-1]);
452		704	}
453	case 27:	705	else if (ecb_expect_true (m == LENGTH_EXT8))
		706	{
454	WANT (9);	707	WANT (8);
455	dec->cur += 9;	708	dec->cur += 8;
		709
		710	return
		711	#if UVSIZE < 8
		712	0
		713	#else
456	return (((UV)dec->cur[-8]) << 56)	714	(((UV)dec->cur[-8]) << 56)
457	| (((UV)dec->cur[-7]) << 48)	715	| (((UV)dec->cur[-7]) << 48)
458	| (((UV)dec->cur[-6]) << 40)	716	| (((UV)dec->cur[-6]) << 40)
459	| (((UV)dec->cur[-5]) << 32)	717	| (((UV)dec->cur[-5]) << 32)
		718	#endif
460	| (((UV)dec->cur[-4]) << 24)	719	| (((UV)dec->cur[-4]) << 24)
461	| (((UV)dec->cur[-3]) << 16)	720	| (((UV)dec->cur[-3]) << 16)
462	| (((UV)dec->cur[-2]) << 8)	721	| (((UV)dec->cur[-2]) << 8)
463	| ((UV)dec->cur[-1]);	722	| ((UV)dec->cur[-1]);
464		723	}
465	default:	724	else
466	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	725	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
467	}
468		726
469	fail:	727	fail:
470	return 0;	728	return 0;
471	}	729	}
472		730
…		…
477	{	735	{
478	AV *av = newAV ();	736	AV *av = newAV ();
479		737
480	DEC_INC_DEPTH;	738	DEC_INC_DEPTH;
481		739
482	if ((*dec->cur & 31) == 31)	740	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
483	{	741	{
484	++dec->cur;	742	++dec->cur;
485		743
486	for (;;)	744	for (;;)
487	{	745	{
488	WANT (1);	746	WANT (1);
489		747
490	if (*dec->cur == (0xe0 | 31))	748	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
491	{	749	{
492	++dec->cur;	750	++dec->cur;
493	break;	751	break;
494	}	752	}
495		753
…		…
498	}	756	}
499	else	757	else
500	{	758	{
501	int i, len = decode_uint (dec);	759	int i, len = decode_uint (dec);
502		760
		761	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
503	av_fill (av, len - 1);	762	av_fill (av, len - 1);
504		763
505	for (i = 0; i < len; ++i)	764	for (i = 0; i < len; ++i)
506	AvARRAY (av)[i] = decode_sv (dec);	765	AvARRAY (av)[i] = decode_sv (dec);
507	}	766	}
…		…
513	SvREFCNT_dec (av);	772	SvREFCNT_dec (av);
514	DEC_DEC_DEPTH;	773	DEC_DEC_DEPTH;
515	return &PL_sv_undef;	774	return &PL_sv_undef;
516	}	775	}
517		776
		777	static void
		778	decode_he (dec_t *dec, HV *hv)
		779	{
		780	// for speed reasons, we specialcase single-string
		781	// byte or utf-8 strings as keys, but only when !stringref
		782
		783	if (ecb_expect_true (!dec->stringref))
		784	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		785	{
		786	I32 len = decode_uint (dec);
		787	char *key = (char *)dec->cur;
		788
		789	WANT (len);
		790	dec->cur += len;
		791
		792	hv_store (hv, key, len, decode_sv (dec), 0);
		793
		794	return;
		795	}
		796	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		797	{
		798	I32 len = decode_uint (dec);
		799	char *key = (char *)dec->cur;
		800
		801	WANT (len);
		802	dec->cur += len;
		803
		804	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		805	if (!is_utf8_string (key, len))
		806	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		807
		808	hv_store (hv, key, -len, decode_sv (dec), 0);
		809
		810	return;
		811	}
		812
		813	SV *k = decode_sv (dec);
		814	SV *v = decode_sv (dec);
		815
		816	hv_store_ent (hv, k, v, 0);
		817	SvREFCNT_dec (k);
		818
		819	fail:
		820	;
		821	}
		822
518	static SV *	823	static SV *
519	decode_hv (dec_t *dec)	824	decode_hv (dec_t *dec)
520	{	825	{
521	HV *hv = newHV ();	826	HV *hv = newHV ();
522		827
523	DEC_INC_DEPTH;	828	DEC_INC_DEPTH;
524		829
525	if ((*dec->cur & 31) == 31)	830	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
526	{	831	{
527	++dec->cur;	832	++dec->cur;
528		833
529	for (;;)	834	for (;;)
530	{	835	{
531	WANT (1);	836	WANT (1);
532		837
533	if (*dec->cur == (0xe0 | 31))	838	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
534	{	839	{
535	++dec->cur;	840	++dec->cur;
536	break;	841	break;
537	}	842	}
538		843
539	SV *k = decode_sv (dec);	844	decode_he (dec, hv);
540	SV *v = decode_sv (dec);
541
542	hv_store_ent (hv, k, v, 0);
543	}	845	}
544	}	846	}
545	else	847	else
546	{	848	{
547	int len = decode_uint (dec);	849	int pairs = decode_uint (dec);
548		850
549	while (len--)	851	while (pairs--)
550	{	852	decode_he (dec, hv);
551	SV *k = decode_sv (dec);
552	SV *v = decode_sv (dec);
553
554	hv_store_ent (hv, k, v, 0);
555	}
556	}	853	}
557		854
558	DEC_DEC_DEPTH;	855	DEC_DEC_DEPTH;
559	return newRV_noinc ((SV *)hv);	856	return newRV_noinc ((SV *)hv);
560		857
…		…
567	static SV *	864	static SV *
568	decode_str (dec_t *dec, int utf8)	865	decode_str (dec_t *dec, int utf8)
569	{	866	{
570	SV *sv = 0;	867	SV *sv = 0;
571		868
572	if ((*dec->cur & 31) == 31)	869	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
573	{	870	{
		871	// indefinite length strings
574	++dec->cur;	872	++dec->cur;
575		873
		874	U8 major = *dec->cur & MAJOR_MISC;
		875
576	sv = newSVpvn ("", 0);	876	sv = newSVpvn ("", 0);
577		877
578	// not very fast, and certainly not robust against illegal input
579	for (;;)	878	for (;;)
580	{	879	{
581	WANT (1);	880	WANT (1);
582		881
583	if (*dec->cur == (0xe0 | 31))	882	if ((*dec->cur - major) > LENGTH_EXT8)
		883	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
584	{	884	{
585	++dec->cur;	885	++dec->cur;
586	break;	886	break;
587	}	887	}
		888	else
		889	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
588		890
589	sv_catsv (sv, decode_sv (dec));	891	STRLEN len = decode_uint (dec);
		892
		893	WANT (len);
		894	sv_catpvn (sv, dec->cur, len);
		895	dec->cur += len;
590	}	896	}
591	}	897	}
592	else	898	else
593	{	899	{
594	STRLEN len = decode_uint (dec);	900	STRLEN len = decode_uint (dec);
595		901
596	WANT (len);	902	WANT (len);
597	sv = newSVpvn (dec->cur, len);	903	sv = newSVpvn (dec->cur, len);
598	dec->cur += len;	904	dec->cur += len;
		905
		906	if (ecb_expect_false (dec->stringref)
		907	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		908	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
599	}	909	}
600		910
601	if (utf8)	911	if (utf8)
		912	{
		913	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		914	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		915	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		916
602	SvUTF8_on (sv);	917	SvUTF8_on (sv);
		918	}
603		919
604	return sv;	920	return sv;
605		921
606	fail:	922	fail:
607	SvREFCNT_dec (sv);	923	SvREFCNT_dec (sv);
…		…
609	}	925	}
610		926
611	static SV *	927	static SV *
612	decode_tagged (dec_t *dec)	928	decode_tagged (dec_t *dec)
613	{	929	{
		930	SV *sv = 0;
614	UV tag = decode_uint (dec);	931	UV tag = decode_uint (dec);
		932
		933	WANT (1);
		934
		935	switch (tag)
		936	{
		937	case CBOR_TAG_MAGIC:
615	SV *sv = decode_sv (dec);	938	sv = decode_sv (dec);
		939	break;
616		940
617	if (tag == 55799) // 2.4.5 Self-Describe CBOR	941	case CBOR_TAG_INDIRECTION:
		942	sv = newRV_noinc (decode_sv (dec));
		943	break;
		944
		945	case CBOR_TAG_STRINGREF_NAMESPACE:
		946	{
		947	// do nmot use SAVETMPS/FREETMPS, as these will
		948	// erase mortalised caches, e.g. "shareable"
		949	ENTER;
		950
		951	SAVESPTR (dec->stringref);
		952	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		953
		954	sv = decode_sv (dec);
		955
		956	LEAVE;
		957	}
		958	break;
		959
		960	case CBOR_TAG_STRINGREF:
		961	{
		962	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		963	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		964
		965	UV idx = decode_uint (dec);
		966
		967	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		968	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		969
		970	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		971	}
		972	break;
		973
		974	case CBOR_TAG_VALUE_SHAREABLE:
		975	{
		976	if (ecb_expect_false (!dec->shareable))
		977	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		978
		979	if (dec->cbor.flags & F_ALLOW_CYCLES)
		980	{
		981	sv = newSV (0);
		982	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		983
		984	SV *osv = decode_sv (dec);
		985	sv_setsv (sv, osv);
		986	SvREFCNT_dec_NN (osv);
		987	}
		988	else
		989	{
		990	av_push (dec->shareable, &PL_sv_undef);
		991	int idx = AvFILLp (dec->shareable);
		992	sv = decode_sv (dec);
		993	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		994	}
		995	}
		996	break;
		997
		998	case CBOR_TAG_VALUE_SHAREDREF:
		999	{
		1000	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1001	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1002
		1003	UV idx = decode_uint (dec);
		1004
		1005	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1006	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1007
		1008	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1009
		1010	if (sv == &PL_sv_undef)
		1011	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1012	}
		1013	break;
		1014
		1015	case CBOR_TAG_PERL_OBJECT:
		1016	{
		1017	sv = decode_sv (dec);
		1018
		1019	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1020	ERR ("corrupted CBOR data (non-array perl object)");
		1021
		1022	AV *av = (AV *)SvRV (sv);
		1023	int len = av_len (av) + 1;
		1024	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1025
		1026	if (!stash)
		1027	ERR ("cannot decode perl-object (package does not exist)");
		1028
		1029	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1030
		1031	if (!method)
		1032	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1033
		1034	dSP;
		1035
		1036	ENTER; SAVETMPS;
		1037	PUSHMARK (SP);
		1038	EXTEND (SP, len + 1);
		1039	// we re-bless the reference to get overload and other niceties right
		1040	PUSHs (*av_fetch (av, 0, 1));
		1041	PUSHs (sv_cbor);
		1042
		1043	int i;
		1044
		1045	for (i = 1; i < len; ++i)
		1046	PUSHs (*av_fetch (av, i, 1));
		1047
		1048	PUTBACK;
		1049	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1050	SPAGAIN;
		1051
		1052	if (SvTRUE (ERRSV))
		1053	{
		1054	FREETMPS; LEAVE;
		1055	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1056	}
		1057
		1058	SvREFCNT_dec (sv);
		1059	sv = SvREFCNT_inc (POPs);
		1060
		1061	PUTBACK;
		1062
		1063	FREETMPS; LEAVE;
		1064	}
		1065	break;
		1066
		1067	default:
		1068	{
		1069	sv = decode_sv (dec);
		1070
		1071	dSP;
		1072	ENTER; SAVETMPS;
		1073	SAVESTACK_POS ();
		1074	PUSHMARK (SP);
		1075	EXTEND (SP, 2);
		1076	PUSHs (newSVuv (tag));
		1077	PUSHs (sv);
		1078
		1079	PUTBACK;
		1080	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1081	SPAGAIN;
		1082
		1083	if (SvTRUE (ERRSV))
		1084	{
		1085	FREETMPS; LEAVE;
		1086	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1087	}
		1088
		1089	if (count)
		1090	{
		1091	SvREFCNT_dec (sv);
		1092	sv = SvREFCNT_inc (POPs);
		1093	}
		1094	else
		1095	{
		1096	AV *av = newAV ();
		1097	av_push (av, newSVuv (tag));
		1098	av_push (av, sv);
		1099
		1100	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1101	? cbor_tagged_stash
		1102	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1103	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1104	}
		1105
		1106	PUTBACK;
		1107
		1108	FREETMPS; LEAVE;
		1109	}
		1110	break;
		1111	}
		1112
618	return sv;	1113	return sv;
619		1114
620	AV *av = newAV ();	1115	fail:
621	av_push (av, newSVuv (tag));	1116	SvREFCNT_dec (sv);
622	av_push (av, sv);	1117	return &PL_sv_undef;
623
624	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
625	? cbor_tagged_stash
626	: gv_stashpv ("CBOR::XS::Tagged" , 1);
627
628	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);
629	}	1118	}
630		1119
631	static SV *	1120	static SV *
632	decode_sv (dec_t *dec)	1121	decode_sv (dec_t *dec)
633	{	1122	{
634	WANT (1);	1123	WANT (1);
635		1124
636	switch (*dec->cur >> 5)	1125	switch (*dec->cur >> MAJOR_SHIFT)
637	{	1126	{
638	case 0: // unsigned int	1127	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
639	return newSVuv (decode_uint (dec));	1128	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
640	case 1: // negative int	1129	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
641	return newSViv (-1 - (IV)decode_uint (dec));	1130	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
642	case 2: // octet string	1131	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
643	return decode_str (dec, 0);	1132	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
644	case 3: // utf-8 string	1133	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
645	return decode_str (dec, 1);	1134
646	case 4: // array	1135	case MAJOR_MISC >> MAJOR_SHIFT:
647	return decode_av (dec);
648	case 5: // map
649	return decode_hv (dec);
650	case 6: // tag
651	return decode_tagged (dec);
652	case 7: // misc
653	switch (*dec->cur++ & 31)	1136	switch (*dec->cur++ & MINOR_MASK)
654	{	1137	{
655	case 20:	1138	case SIMPLE_FALSE:
656	#if CBOR_SLOW	1139	#if CBOR_SLOW
657	cbor_false = get_bool ("CBOR::XS::false");	1140	types_false = get_bool ("Types::Serialiser::false");
658	#endif	1141	#endif
659	return newSVsv (cbor_false);	1142	return newSVsv (types_false);
660	case 21:	1143	case SIMPLE_TRUE:
661	#if CBOR_SLOW	1144	#if CBOR_SLOW
662	cbor_true = get_bool ("CBOR::XS::true");	1145	types_true = get_bool ("Types::Serialiser::true");
663	#endif	1146	#endif
664	return newSVsv (cbor_true);	1147	return newSVsv (types_true);
665	case 22:	1148	case SIMPLE_NULL:
666	return newSVsv (&PL_sv_undef);	1149	return newSVsv (&PL_sv_undef);
		1150	case SIMPLE_UNDEF:
		1151	#if CBOR_SLOW
		1152	types_error = get_bool ("Types::Serialiser::error");
		1153	#endif
		1154	return newSVsv (types_error);
667		1155
668	case 25:	1156	case MISC_FLOAT16:
669	{	1157	{
670	WANT (2);	1158	WANT (2);
671		1159
672	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1160	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
673	dec->cur += 2;	1161	dec->cur += 2;
674		1162
675	return newSVnv (ecb_binary16_to_float (fp));	1163	return newSVnv (ecb_binary16_to_float (fp));
676	}	1164	}
677		1165
678	case 26:	1166	case MISC_FLOAT32:
679	{	1167	{
680	uint32_t fp;	1168	uint32_t fp;
681	WANT (4);	1169	WANT (4);
682	memcpy (&fp, dec->cur, 4);	1170	memcpy (&fp, dec->cur, 4);
683	dec->cur += 4;	1171	dec->cur += 4;
…		…
686	fp = ecb_bswap32 (fp);	1174	fp = ecb_bswap32 (fp);
687		1175
688	return newSVnv (ecb_binary32_to_float (fp));	1176	return newSVnv (ecb_binary32_to_float (fp));
689	}	1177	}
690		1178
691	case 27:	1179	case MISC_FLOAT64:
692	{	1180	{
693	uint64_t fp;	1181	uint64_t fp;
694	WANT (8);	1182	WANT (8);
695	memcpy (&fp, dec->cur, 8);	1183	memcpy (&fp, dec->cur, 8);
696	dec->cur += 8;	1184	dec->cur += 8;
…		…
699	fp = ecb_bswap64 (fp);	1187	fp = ecb_bswap64 (fp);
700		1188
701	return newSVnv (ecb_binary64_to_double (fp));	1189	return newSVnv (ecb_binary64_to_double (fp));
702	}	1190	}
703		1191
704	// 0..19 unassigned	1192	// 0..19 unassigned simple
705	// 24 reserved + unassigned (reserved values are not encodable)	1193	// 24 reserved + unassigned simple (reserved values are not encodable)
		1194	// 28-30 unassigned misc
		1195	// 31 break code
706	default:	1196	default:
707	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1197	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
708	}	1198	}
709		1199
710	break;	1200	break;
711	}	1201	}
712		1202
…		…
715	}	1205	}
716		1206
717	static SV *	1207	static SV *
718	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1208	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
719	{	1209	{
720	dec_t dec;	1210	dec_t dec = { 0 };
721	SV *sv;	1211	SV *sv;
		1212	STRLEN len;
		1213	char *data = SvPVbyte (string, len);
722		1214
723	/* work around bugs in 5.10 where manipulating magic values
724	* makes perl ignore the magic in subsequent accesses.
725	* also make a copy of non-PV values, to get them into a clean
726	* state (SvPV should do that, but it's buggy, see below).
727	*/
728	/*SvGETMAGIC (string);*/
729	if (SvMAGICAL (string) || !SvPOK (string))
730	string = sv_2mortal (newSVsv (string));
731
732	SvUPGRADE (string, SVt_PV);
733
734	/* work around a bug in perl 5.10, which causes SvCUR to fail an
735	* assertion with -DDEBUGGING, although SvCUR is documented to
736	* return the xpv_cur field which certainly exists after upgrading.
737	* according to nicholas clark, calling SvPOK fixes this.
738	* But it doesn't fix it, so try another workaround, call SvPV_nolen
739	* and hope for the best.
740	* Damnit, SvPV_nolen still trips over yet another assertion. This
741	* assertion business is seriously broken, try yet another workaround
742	* for the broken -DDEBUGGING.
743	*/
744	{
745	#ifdef DEBUGGING
746	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
747	#else
748	STRLEN offset = SvCUR (string);
749	#endif
750
751	if (offset > cbor->max_size && cbor->max_size)	1215	if (len > cbor->max_size && cbor->max_size)
752	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1216	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
753	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1217	(unsigned long)len, (unsigned long)cbor->max_size);
754	}
755
756	sv_utf8_downgrade (string, 0);
757		1218
758	dec.cbor = *cbor;	1219	dec.cbor = *cbor;
759	dec.cur = (U8 *)SvPVX (string);	1220	dec.cur = (U8 *)data;
760	dec.end = (U8 *)SvEND (string);	1221	dec.end = (U8 *)data + len;
761	dec.err = 0;
762	dec.depth = 0;
763		1222
764	sv = decode_sv (&dec);	1223	sv = decode_sv (&dec);
765		1224
766	if (offset_return)	1225	if (offset_return)
767	*offset_return = dec.cur;	1226	*offset_return = dec.cur;
…		…
770	if (dec.cur != dec.end && !dec.err)	1229	if (dec.cur != dec.end && !dec.err)
771	dec.err = "garbage after CBOR object";	1230	dec.err = "garbage after CBOR object";
772		1231
773	if (dec.err)	1232	if (dec.err)
774	{	1233	{
		1234	if (dec.shareable)
		1235	{
		1236	// need to break cyclic links, which whould all be in shareable
		1237	int i;
		1238	SV **svp;
		1239
		1240	for (i = av_len (dec.shareable) + 1; i--; )
		1241	if ((svp = av_fetch (dec.shareable, i, 0)))
		1242	sv_setsv (*svp, &PL_sv_undef);
		1243	}
		1244
775	SvREFCNT_dec (sv);	1245	SvREFCNT_dec (sv);
776	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1246	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
777	}	1247	}
778		1248
779	sv = sv_2mortal (sv);	1249	sv = sv_2mortal (sv);
780		1250
781	return sv;	1251	return sv;
782	}	1252	}
783		1253
		1254	/////////////////////////////////////////////////////////////////////////////
		1255	// incremental parser
		1256
		1257	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1258
		1259	// returns 0 for notyet, 1 for success or error
		1260	static int
		1261	incr_parse (CBOR *self, SV *cborstr)
		1262	{
		1263	STRLEN cur;
		1264	SvPV (cborstr, cur);
		1265
		1266	while (ecb_expect_true (self->incr_need <= cur))
		1267	{
		1268	// table of integer count bytes
		1269	static I8 incr_len[MINOR_MASK + 1] = {
		1270	0, 0, 0, 0, 0, 0, 0, 0,
		1271	0, 0, 0, 0, 0, 0, 0, 0,
		1272	0, 0, 0, 0, 0, 0, 0, 0,
		1273	1, 2, 4, 8,-1,-1,-1,-2
		1274	};
		1275
		1276	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1277	U8 m = *p & MINOR_MASK;
		1278	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1279	I8 ilen = incr_len[m];
		1280
		1281	self->incr_need = self->incr_pos + 1;
		1282
		1283	if (ecb_expect_false (ilen < 0))
		1284	{
		1285	if (m != MINOR_INDEF)
		1286	return 1; // error
		1287
		1288	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1289	{
		1290	if (count >= 0)
		1291	return 1; // error
		1292
		1293	count = 1;
		1294	}
		1295	else
		1296	{
		1297	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1298	count = -1;
		1299	}
		1300	}
		1301	else
		1302	{
		1303	self->incr_need += ilen;
		1304	if (ecb_expect_false (self->incr_need > cur))
		1305	return 0;
		1306
		1307	int major = *p >> MAJOR_SHIFT;
		1308
		1309	switch (major)
		1310	{
		1311	case MAJOR_TAG >> MAJOR_SHIFT:
		1312	++count; // tags merely prefix another value
		1313	break;
		1314
		1315	case MAJOR_BYTES >> MAJOR_SHIFT:
		1316	case MAJOR_TEXT >> MAJOR_SHIFT:
		1317	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1318	case MAJOR_MAP >> MAJOR_SHIFT:
		1319	{
		1320	UV len;
		1321
		1322	if (ecb_expect_false (ilen))
		1323	{
		1324	len = 0;
		1325
		1326	do {
		1327	len = (len << 8) | *++p;
		1328	} while (--ilen);
		1329	}
		1330	else
		1331	len = m;
		1332
		1333	switch (major)
		1334	{
		1335	case MAJOR_BYTES >> MAJOR_SHIFT:
		1336	case MAJOR_TEXT >> MAJOR_SHIFT:
		1337	self->incr_need += len;
		1338	if (ecb_expect_false (self->incr_need > cur))
		1339	return 0;
		1340
		1341	break;
		1342
		1343	case MAJOR_MAP >> MAJOR_SHIFT:
		1344	len <<= 1;
		1345	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1346	if (len)
		1347	{
		1348	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1349	count = len + 1;
		1350	}
		1351	break;
		1352	}
		1353	}
		1354	}
		1355	}
		1356
		1357	self->incr_pos = self->incr_need;
		1358
		1359	if (count > 0)
		1360	{
		1361	while (!--count)
		1362	{
		1363	if (!AvFILLp (self->incr_count))
		1364	return 1; // done
		1365
		1366	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1367	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1368	}
		1369
		1370	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1371	}
		1372	}
		1373
		1374	return 0;
		1375	}
		1376
		1377
784	/////////////////////////////////////////////////////////////////////////////	1378	/////////////////////////////////////////////////////////////////////////////
785	// XS interface functions	1379	// XS interface functions
786		1380
787	MODULE = CBOR::XS PACKAGE = CBOR::XS	1381	MODULE = CBOR::XS PACKAGE = CBOR::XS
788		1382
789	BOOT:	1383	BOOT:
790	{	1384	{
791	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1385	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
792	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
793	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1386	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
794		1387
795	cbor_true = get_bool ("CBOR::XS::true");	1388	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
796	cbor_false = get_bool ("CBOR::XS::false");	1389	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1390
		1391	types_true = get_bool ("Types::Serialiser::true" );
		1392	types_false = get_bool ("Types::Serialiser::false");
		1393	types_error = get_bool ("Types::Serialiser::error");
		1394
		1395	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1396
		1397	sv_cbor = newSVpv ("CBOR", 0);
		1398	SvREADONLY_on (sv_cbor);
797	}	1399	}
798		1400
799	PROTOTYPES: DISABLE	1401	PROTOTYPES: DISABLE
800		1402
801	void CLONE (...)	1403	void CLONE (...)
802	CODE:	1404	CODE:
803	cbor_stash = 0;	1405	cbor_stash = 0;
804	cbor_boolean_stash = 0;
805	cbor_tagged_stash = 0;	1406	cbor_tagged_stash = 0;
		1407	types_error_stash = 0;
		1408	types_boolean_stash = 0;
806		1409
807	void new (char *klass)	1410	void new (char *klass)
808	PPCODE:	1411	PPCODE:
809	{	1412	{
810	SV *pv = NEWSV (0, sizeof (CBOR));	1413	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
818		1421
819	void shrink (CBOR *self, int enable = 1)	1422	void shrink (CBOR *self, int enable = 1)
820	ALIAS:	1423	ALIAS:
821	shrink = F_SHRINK	1424	shrink = F_SHRINK
822	allow_unknown = F_ALLOW_UNKNOWN	1425	allow_unknown = F_ALLOW_UNKNOWN
		1426	allow_sharing = F_ALLOW_SHARING
		1427	allow_cycles = F_ALLOW_CYCLES
		1428	pack_strings = F_PACK_STRINGS
		1429	text_keys = F_TEXT_KEYS
		1430	text_strings = F_TEXT_STRINGS
		1431	validate_utf8 = F_VALIDATE_UTF8
823	PPCODE:	1432	PPCODE:
824	{	1433	{
825	if (enable)	1434	if (enable)
826	self->flags |= ix;	1435	self->flags |= ix;
827	else	1436	else
…		…
832		1441
833	void get_shrink (CBOR *self)	1442	void get_shrink (CBOR *self)
834	ALIAS:	1443	ALIAS:
835	get_shrink = F_SHRINK	1444	get_shrink = F_SHRINK
836	get_allow_unknown = F_ALLOW_UNKNOWN	1445	get_allow_unknown = F_ALLOW_UNKNOWN
		1446	get_allow_sharing = F_ALLOW_SHARING
		1447	get_allow_cycles = F_ALLOW_CYCLES
		1448	get_pack_strings = F_PACK_STRINGS
		1449	get_text_keys = F_TEXT_KEYS
		1450	get_text_strings = F_TEXT_STRINGS
		1451	get_validate_utf8 = F_VALIDATE_UTF8
837	PPCODE:	1452	PPCODE:
838	XPUSHs (boolSV (self->flags & ix));	1453	XPUSHs (boolSV (self->flags & ix));
839		1454
840	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1455	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
841	PPCODE:	1456	PPCODE:
…		…
857	CODE:	1472	CODE:
858	RETVAL = self->max_size;	1473	RETVAL = self->max_size;
859	OUTPUT:	1474	OUTPUT:
860	RETVAL	1475	RETVAL
861		1476
862	#if 0 //TODO	1477	void filter (CBOR *self, SV *filter = 0)
863
864	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
865	PPCODE:	1478	PPCODE:
866	{
867	SvREFCNT_dec (self->cb_object);	1479	SvREFCNT_dec (self->filter);
868	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1480	self->filter = filter ? newSVsv (filter) : filter;
869
870	XPUSHs (ST (0));	1481	XPUSHs (ST (0));
871	}
872		1482
873	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1483	SV *get_filter (CBOR *self)
874	PPCODE:	1484	CODE:
875	{	1485	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
876	if (!self->cb_sk_object)	1486	OUTPUT:
877	self->cb_sk_object = newHV ();	1487	RETVAL
878
879	if (SvOK (cb))
880	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
881	else
882	{
883	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
884
885	if (!HvKEYS (self->cb_sk_object))
886	{
887	SvREFCNT_dec (self->cb_sk_object);
888	self->cb_sk_object = 0;
889	}
890	}
891
892	XPUSHs (ST (0));
893	}
894
895	#endif
896		1488
897	void encode (CBOR *self, SV *scalar)	1489	void encode (CBOR *self, SV *scalar)
898	PPCODE:	1490	PPCODE:
899	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1491	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
900	XPUSHs (scalar);	1492	XPUSHs (scalar);
…		…
913	EXTEND (SP, 2);	1505	EXTEND (SP, 2);
914	PUSHs (sv);	1506	PUSHs (sv);
915	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1507	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
916	}	1508	}
917		1509
918	#if 0	1510	void incr_parse (CBOR *self, SV *cborstr)
		1511	ALIAS:
		1512	incr_parse_multiple = 1
		1513	PPCODE:
		1514	{
		1515	if (SvUTF8 (cborstr))
		1516	sv_utf8_downgrade (cborstr, 0);
		1517
		1518	if (!self->incr_count)
		1519	{
		1520	self->incr_count = newAV ();
		1521	self->incr_pos = 0;
		1522	self->incr_need = 1;
		1523
		1524	av_push (self->incr_count, newSViv (1));
		1525	}
		1526
		1527	do
		1528	{
		1529	if (!incr_parse (self, cborstr))
		1530	{
		1531	if (self->incr_need > self->max_size && self->max_size)
		1532	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1533	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1534
		1535	break;
		1536	}
		1537
		1538	SV *sv;
		1539	char *offset;
		1540
		1541	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1542	XPUSHs (sv);
		1543
		1544	sv_chop (cborstr, offset);
		1545
		1546	av_clear (self->incr_count);
		1547	av_push (self->incr_count, newSViv (1));
		1548
		1549	self->incr_pos = 0;
		1550	self->incr_need = self->incr_pos + 1;
		1551	}
		1552	while (ix);
		1553	}
		1554
		1555	void incr_reset (CBOR *self)
		1556	CODE:
		1557	{
		1558	SvREFCNT_dec (self->incr_count);
		1559	self->incr_count = 0;
		1560	}
919		1561
920	void DESTROY (CBOR *self)	1562	void DESTROY (CBOR *self)
921	CODE:	1563	PPCODE:
922	SvREFCNT_dec (self->cb_sk_object);	1564	cbor_free (self);
923	SvREFCNT_dec (self->cb_object);
924
925	#endif
926		1565
927	PROTOTYPES: ENABLE	1566	PROTOTYPES: ENABLE
928		1567
929	void encode_cbor (SV *scalar)	1568	void encode_cbor (SV *scalar)
		1569	ALIAS:
		1570	encode_cbor = 0
		1571	encode_cbor_sharing = F_ALLOW_SHARING
930	PPCODE:	1572	PPCODE:
931	{	1573	{
932	CBOR cbor;	1574	CBOR cbor;
933	cbor_init (&cbor);	1575	cbor_init (&cbor);
		1576	cbor.flags |= ix;
934	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1577	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
935	XPUSHs (scalar);	1578	XPUSHs (scalar);
936	}	1579	}
937		1580
938	void decode_cbor (SV *cborstr)	1581	void decode_cbor (SV *cborstr)

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