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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.10 by root, Sun Oct 27 20:40:25 2013 UTC vs.
Revision 1.51 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"
		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	};
13		65
14	// known tags	66	// known tags
15	enum cbor_tag	67	enum cbor_tag
16	{	68	{
17	// inofficial extensions (pending iana registration)	69	// extensions
18	CBOR_TAG_PERL_OBJECT = 256,	70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
19	CBOR_TAG_GENERIC_OBJECT = 257,	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
20		77
21	// rfc7049	78	// rfc7049
22	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
23	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
24	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
25	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
26	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
27	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
28		85
29	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
30	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
31	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
32	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
33		90
34	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
35	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
36	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
37	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
38	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
39		96
40	CBOR_TAG_MAGIC = 55799 // self-describe cbor	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
41	};	98	};
42		99
43	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
44	#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
45		107
46	#define INIT_SIZE 32 // initial scalar size to be allocated	108	#define INIT_SIZE 32 // initial scalar size to be allocated
47		109
48	#define SB do {	110	#define SB do {
49	#define SE } while (0)	111	#define SE } while (0)
…		…
61	# define CBOR_SLOW 0	123	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	124	# define CBOR_STASH cbor_stash
63	#endif	125	#endif
64		126
65	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	127	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
66	static SV *types_true, *types_false, *types_error;	128	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
67		129
68	typedef struct {	130	typedef struct {
69	U32 flags;	131	U32 flags;
70	U32 max_depth;	132	U32 max_depth;
71	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.
72	} CBOR;	140	} CBOR;
73		141
74	ecb_inline void	142	ecb_inline void
75	cbor_init (CBOR *cbor)	143	cbor_init (CBOR *cbor)
76	{	144	{
77	Zero (cbor, 1, CBOR);	145	Zero (cbor, 1, CBOR);
78	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);
79	}	154	}
80		155
81	/////////////////////////////////////////////////////////////////////////////	156	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	157	// utility functions
83		158
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	180	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	181	#endif
107	}	182	}
108	}	183	}
109		184
110	/////////////////////////////////////////////////////////////////////////////	185	// minimum length of a string to be registered for stringref
111	// fp hell	186	ecb_inline int
112		187	minimum_string_length (UV idx)
113	//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	}
114		199
115	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
116	// encoder	201	// encoder
117		202
118	// structure used for encoding CBOR	203	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	206	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	207	char *end; // SvEND (sv)
123	SV *sv; // result scalar	208	SV *sv; // result scalar
124	CBOR cbor;	209	CBOR cbor;
125	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;
126	} enc_t;	215	} enc_t;
127		216
128	ecb_inline void	217	ecb_inline void
129	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
130	{	219	{
…		…
147	static void	236	static void
148	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
149	{	238	{
150	need (enc, 9);	239	need (enc, 9);
151		240
152	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
154	else if (len <= 0xff)	243	else if (ecb_expect_true (len <= 0xffU))
155	{	244	{
156	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
157	*enc->cur++ = len;	246	*enc->cur++ = len;
158	}	247	}
159	else if (len <= 0xffff)	248	else if (len <= 0xffffU)
160	{	249	{
161	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	252	*enc->cur++ = len;
164	}	253	}
165	else if (len <= 0xffffffff)	254	else if (len <= 0xffffffffU)
166	{	255	{
167	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	260	*enc->cur++ = len;
172	}	261	}
173	else	262	else
174	{	263	{
175	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	271	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	272	*enc->cur++ = len;
184	}	273	}
185	}	274	}
186		275
187	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
188	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
189	{	284	{
190	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);
191	need (enc, len);	299	need (enc, len);
192	memcpy (enc->cur, str, len);	300	memcpy (enc->cur, str, len);
193	enc->cur += len;	301	enc->cur += len;
194	}	302	}
195		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
196	static void encode_sv (enc_t *enc, SV *sv);	329	static void encode_sv (enc_t *enc, SV *sv);
197		330
198	static void	331	static void
199	encode_av (enc_t *enc, AV *av)	332	encode_av (enc_t *enc, AV *av)
200	{	333	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	336	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	337	croak (ERR_NESTING_EXCEEDED);
205		338
206	++enc->depth;	339	++enc->depth;
207		340
208	encode_uint (enc, 0x80, len + 1);	341	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		342
		343	if (SvMAGICAL (av))
210	for (i = 0; i <= len; ++i)	344	for (i = 0; i <= len; ++i)
211	{	345	{
212	SV **svp = av_fetch (av, i, 0);	346	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	347	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	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	}
215		355
216	--enc->depth;	356	--enc->depth;
217	}	357	}
218		358
219	static void	359	static void
…		…
228		368
229	int pairs = hv_iterinit (hv);	369	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	370	int mg = SvMAGICAL (hv);
231		371
232	if (mg)	372	if (mg)
233	encode_ch (enc, 0xa0 | 31);	373	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
234	else	374	else
235	encode_uint (enc, 0xa0, pairs);	375	encode_uint (enc, MAJOR_MAP, pairs);
236		376
237	while ((he = hv_iternext (hv)))	377	while ((he = hv_iternext (hv)))
238	{	378	{
239	if (HeKLEN (he) == HEf_SVKEY)	379	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	380	encode_sv (enc, HeSVKEY (he));
241	else	381	else
242	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	382	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
243		383
244	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));
245	}	385	}
246		386
247	if (mg)	387	if (mg)
248	encode_ch (enc, 0xe0 | 31);	388	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
249		389
250	--enc->depth;	390	--enc->depth;
251	}	391	}
252		392
253	// encode objects, arrays and special \0=false and \1=true values.	393	// encode objects, arrays and special \0=false and \1=true values.
254	static void	394	static void
255	encode_rv (enc_t *enc, SV *sv)	395	encode_rv (enc_t *enc, SV *sv)
256	{	396	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	397	SvGETMAGIC (sv);
		398
260	svt = SvTYPE (sv);	399	svtype svt = SvTYPE (sv);
261		400
262	if (ecb_expect_false (SvOBJECT (sv)))	401	if (ecb_expect_false (SvOBJECT (sv)))
263	{	402	{
264	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	403	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
265	? types_boolean_stash	404	? types_boolean_stash
…		…
269	: gv_stashpv ("Types::Serialiser::Error", 1);	408	: gv_stashpv ("Types::Serialiser::Error", 1);
270	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	409	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
271	? cbor_tagged_stash	410	? cbor_tagged_stash
272	: gv_stashpv ("CBOR::XS::Tagged" , 1);	411	: gv_stashpv ("CBOR::XS::Tagged" , 1);
273		412
		413	HV *stash = SvSTASH (sv);
		414
274	if (SvSTASH (sv) == boolean_stash)	415	if (stash == boolean_stash)
275	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	}
276	else if (SvSTASH (sv) == error_stash)	420	else if (stash == error_stash)
277	encode_ch (enc, 0xe0 | 23);	421	{
		422	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		423	return;
		424	}
278	else if (SvSTASH (sv) == tagged_stash)	425	else if (stash == tagged_stash)
279	{	426	{
280	if (svt != SVt_PVAV)	427	if (svt != SVt_PVAV)
281	croak ("encountered CBOR::XS::Tagged object that isn't an array");	428	croak ("encountered CBOR::XS::Tagged object that isn't an array");
282		429
283	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	430	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
284	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;
285	}	450	}
286	else	451	else
287	{	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);
288	// 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
289	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
290
291	if (to_cbor)
292	{
293	dSP;
294
295	ENTER; SAVETMPS; PUSHMARK (SP);
296	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	471	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
297		472
298	// calling with G_SCALAR ensures that we always get a 1 return value
299	PUTBACK;	473	PUTBACK;
		474	// G_SCALAR ensures that return value is 1
300	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	475	call_sv ((SV *)GvCV (method), G_SCALAR);
301	SPAGAIN;	476	SPAGAIN;
302		477
303	// catch this surprisingly common error	478	// catch this surprisingly common error
304	if (SvROK (TOPs) && SvRV (TOPs) == sv)	479	if (SvROK (TOPs) && SvRV (TOPs) == sv)
305	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	480	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
306		481
307	sv = POPs;	482	encode_sv (enc, POPs);
		483
308	PUTBACK;	484	PUTBACK;
309		485
310	encode_sv (enc, sv);
311
312	FREETMPS; LEAVE;	486	FREETMPS; LEAVE;
313	}	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	}
314	else	519	else
315	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",
316	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	521	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
317	}
318	}	522	}
319	else if (svt == SVt_PVHV)	523	else if (svt == SVt_PVHV)
320	encode_hv (enc, (HV *)sv);	524	encode_hv (enc, (HV *)sv);
321	else if (svt == SVt_PVAV)	525	else if (svt == SVt_PVAV)
322	encode_av (enc, (AV *)sv);	526	encode_av (enc, (AV *)sv);
323	else if (svt < SVt_PVAV)
324	{
325	STRLEN len = 0;
326	char *pv = svt ? SvPV (sv, len) : 0;
327
328	if (len == 1 && *pv == '1')
329	encode_ch (enc, 0xe0 | 21);
330	else if (len == 1 && *pv == '0')
331	encode_ch (enc, 0xe0 | 20);
332	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
333	encode_ch (enc, 0xe0 | 23);
334	else
335	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
336	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
337	}
338	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
339	encode_ch (enc, 0xe0 | 23);
340	else	527	else
341	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	528	{
342	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	529	encode_tag (enc, CBOR_TAG_INDIRECTION);
		530	encode_sv (enc, sv);
		531	}
343	}	532	}
344		533
345	static void	534	static void
346	encode_nv (enc_t *enc, SV *sv)	535	encode_nv (enc_t *enc, SV *sv)
347	{	536	{
348	double nv = SvNVX (sv);	537	double nv = SvNVX (sv);
349		538
350	need (enc, 9);	539	need (enc, 9);
351		540
352	if (ecb_expect_false (nv == (U32)nv))	541	if (ecb_expect_false (nv == (NV)(U32)nv))
353	encode_uint (enc, 0x00, (U32)nv);	542	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
354	//TODO: maybe I32?	543	//TODO: maybe I32?
355	else if (ecb_expect_false (nv == (float)nv))	544	else if (ecb_expect_false (nv == (float)nv))
356	{	545	{
357	uint32_t fp = ecb_float_to_binary32 (nv);	546	uint32_t fp = ecb_float_to_binary32 (nv);
358		547
359	*enc->cur++ = 0xe0 | 26;	548	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
360		549
361	if (!ecb_big_endian ())	550	if (!ecb_big_endian ())
362	fp = ecb_bswap32 (fp);	551	fp = ecb_bswap32 (fp);
363		552
364	memcpy (enc->cur, &fp, 4);	553	memcpy (enc->cur, &fp, 4);
…		…
366	}	555	}
367	else	556	else
368	{	557	{
369	uint64_t fp = ecb_double_to_binary64 (nv);	558	uint64_t fp = ecb_double_to_binary64 (nv);
370		559
371	*enc->cur++ = 0xe0 | 27;	560	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
372		561
373	if (!ecb_big_endian ())	562	if (!ecb_big_endian ())
374	fp = ecb_bswap64 (fp);	563	fp = ecb_bswap64 (fp);
375		564
376	memcpy (enc->cur, &fp, 8);	565	memcpy (enc->cur, &fp, 8);
…		…
385		574
386	if (SvPOKp (sv))	575	if (SvPOKp (sv))
387	{	576	{
388	STRLEN len;	577	STRLEN len;
389	char *str = SvPV (sv, len);	578	char *str = SvPV (sv, len);
390	encode_str (enc, SvUTF8 (sv), str, len);	579	encode_strref (enc, SvUTF8 (sv), str, len);
391	}	580	}
392	else if (SvNOKp (sv))	581	else if (SvNOKp (sv))
393	encode_nv (enc, sv);	582	encode_nv (enc, sv);
394	else if (SvIOKp (sv))	583	else if (SvIOKp (sv))
395	{	584	{
396	if (SvIsUV (sv))	585	if (SvIsUV (sv))
397	encode_uint (enc, 0x00, SvUVX (sv));	586	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
398	else if (SvIVX (sv) >= 0)	587	else if (SvIVX (sv) >= 0)
399	encode_uint (enc, 0x00, SvIVX (sv));	588	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
400	else	589	else
401	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	590	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
402	}	591	}
403	else if (SvROK (sv))	592	else if (SvROK (sv))
404	encode_rv (enc, SvRV (sv));	593	encode_rv (enc, SvRV (sv));
405	else if (!SvOK (sv))	594	else if (!SvOK (sv))
406	encode_ch (enc, 0xe0 | 22);	595	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
407	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	596	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
408	encode_ch (enc, 0xe0 | 23);	597	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
409	else	598	else
410	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",
411	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	600	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
412	}	601	}
413		602
414	static SV *	603	static SV *
415	encode_cbor (SV *scalar, CBOR *cbor)	604	encode_cbor (SV *scalar, CBOR *cbor)
416	{	605	{
417	enc_t enc;	606	enc_t enc = { 0 };
418		607
419	enc.cbor = *cbor;	608	enc.cbor = *cbor;
420	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	609	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
421	enc.cur = SvPVX (enc.sv);	610	enc.cur = SvPVX (enc.sv);
422	enc.end = SvEND (enc.sv);	611	enc.end = SvEND (enc.sv);
423	enc.depth = 0;
424		612
425	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
426	encode_sv (&enc, scalar);	622	encode_sv (&enc, scalar);
427		623
428	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	624	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
429	*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
430		626
…		…
444	U8 *end; // end of input string	640	U8 *end; // end of input string
445	const char *err; // parse error, if != 0	641	const char *err; // parse error, if != 0
446	CBOR cbor;	642	CBOR cbor;
447	U32 depth; // recursion depth	643	U32 depth; // recursion depth
448	U32 maxdepth; // recursion depth limit	644	U32 maxdepth; // recursion depth limit
		645	AV *shareable;
		646	AV *stringref;
		647	SV *decode_tagged;
449	} dec_t;	648	} dec_t;
450		649
451	#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
452		651
453	#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")
…		…
456	#define DEC_DEC_DEPTH --dec->depth	655	#define DEC_DEC_DEPTH --dec->depth
457		656
458	static UV	657	static UV
459	decode_uint (dec_t *dec)	658	decode_uint (dec_t *dec)
460	{	659	{
461	switch (*dec->cur & 31)	660	U8 m = *dec->cur & MINOR_MASK;
462	{	661	++dec->cur;
463	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
464	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
465	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
466	return *dec->cur++ & 31;
467		662
468	case 24:	663	if (ecb_expect_true (m < LENGTH_EXT1))
		664	return m;
		665	else if (ecb_expect_true (m == LENGTH_EXT1))
		666	{
469	WANT (2);	667	WANT (1);
470	dec->cur += 2;	668	dec->cur += 1;
471	return dec->cur[-1];	669	return dec->cur[-1];
472		670	}
473	case 25:	671	else if (ecb_expect_true (m == LENGTH_EXT2))
		672	{
474	WANT (3);	673	WANT (2);
475	dec->cur += 3;	674	dec->cur += 2;
476	return (((UV)dec->cur[-2]) << 8)	675	return (((UV)dec->cur[-2]) << 8)
477	| ((UV)dec->cur[-1]);	676	| ((UV)dec->cur[-1]);
478		677	}
479	case 26:	678	else if (ecb_expect_true (m == LENGTH_EXT4))
		679	{
480	WANT (5);	680	WANT (4);
481	dec->cur += 5;	681	dec->cur += 4;
482	return (((UV)dec->cur[-4]) << 24)	682	return (((UV)dec->cur[-4]) << 24)
483	| (((UV)dec->cur[-3]) << 16)	683	| (((UV)dec->cur[-3]) << 16)
484	| (((UV)dec->cur[-2]) << 8)	684	| (((UV)dec->cur[-2]) << 8)
485	| ((UV)dec->cur[-1]);	685	| ((UV)dec->cur[-1]);
486		686	}
487	case 27:	687	else if (ecb_expect_true (m == LENGTH_EXT8))
		688	{
488	WANT (9);	689	WANT (8);
489	dec->cur += 9;	690	dec->cur += 8;
		691
		692	return
		693	#if UVSIZE < 8
		694	0
		695	#else
490	return (((UV)dec->cur[-8]) << 56)	696	(((UV)dec->cur[-8]) << 56)
491	| (((UV)dec->cur[-7]) << 48)	697	| (((UV)dec->cur[-7]) << 48)
492	| (((UV)dec->cur[-6]) << 40)	698	| (((UV)dec->cur[-6]) << 40)
493	| (((UV)dec->cur[-5]) << 32)	699	| (((UV)dec->cur[-5]) << 32)
		700	#endif
494	| (((UV)dec->cur[-4]) << 24)	701	| (((UV)dec->cur[-4]) << 24)
495	| (((UV)dec->cur[-3]) << 16)	702	| (((UV)dec->cur[-3]) << 16)
496	| (((UV)dec->cur[-2]) << 8)	703	| (((UV)dec->cur[-2]) << 8)
497	| ((UV)dec->cur[-1]);	704	| ((UV)dec->cur[-1]);
498		705	}
499	default:	706	else
500	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	707	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
501	}
502		708
503	fail:	709	fail:
504	return 0;	710	return 0;
505	}	711	}
506		712
…		…
511	{	717	{
512	AV *av = newAV ();	718	AV *av = newAV ();
513		719
514	DEC_INC_DEPTH;	720	DEC_INC_DEPTH;
515		721
516	if ((*dec->cur & 31) == 31)	722	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
517	{	723	{
518	++dec->cur;	724	++dec->cur;
519		725
520	for (;;)	726	for (;;)
521	{	727	{
522	WANT (1);	728	WANT (1);
523		729
524	if (*dec->cur == (0xe0 | 31))	730	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
525	{	731	{
526	++dec->cur;	732	++dec->cur;
527	break;	733	break;
528	}	734	}
529		735
…		…
532	}	738	}
533	else	739	else
534	{	740	{
535	int i, len = decode_uint (dec);	741	int i, len = decode_uint (dec);
536		742
		743	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
537	av_fill (av, len - 1);	744	av_fill (av, len - 1);
538		745
539	for (i = 0; i < len; ++i)	746	for (i = 0; i < len; ++i)
540	AvARRAY (av)[i] = decode_sv (dec);	747	AvARRAY (av)[i] = decode_sv (dec);
541	}	748	}
…		…
547	SvREFCNT_dec (av);	754	SvREFCNT_dec (av);
548	DEC_DEC_DEPTH;	755	DEC_DEC_DEPTH;
549	return &PL_sv_undef;	756	return &PL_sv_undef;
550	}	757	}
551		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
552	static SV *	805	static SV *
553	decode_hv (dec_t *dec)	806	decode_hv (dec_t *dec)
554	{	807	{
555	HV *hv = newHV ();	808	HV *hv = newHV ();
556		809
557	DEC_INC_DEPTH;	810	DEC_INC_DEPTH;
558		811
559	if ((*dec->cur & 31) == 31)	812	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
560	{	813	{
561	++dec->cur;	814	++dec->cur;
562		815
563	for (;;)	816	for (;;)
564	{	817	{
565	WANT (1);	818	WANT (1);
566		819
567	if (*dec->cur == (0xe0 | 31))	820	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
568	{	821	{
569	++dec->cur;	822	++dec->cur;
570	break;	823	break;
571	}	824	}
572		825
573	SV *k = decode_sv (dec);	826	decode_he (dec, hv);
574	SV *v = decode_sv (dec);
575
576	hv_store_ent (hv, k, v, 0);
577	}	827	}
578	}	828	}
579	else	829	else
580	{	830	{
581	int len = decode_uint (dec);	831	int pairs = decode_uint (dec);
582		832
583	while (len--)	833	while (pairs--)
584	{	834	decode_he (dec, hv);
585	SV *k = decode_sv (dec);
586	SV *v = decode_sv (dec);
587
588	hv_store_ent (hv, k, v, 0);
589	}
590	}	835	}
591		836
592	DEC_DEC_DEPTH;	837	DEC_DEC_DEPTH;
593	return newRV_noinc ((SV *)hv);	838	return newRV_noinc ((SV *)hv);
594		839
…		…
601	static SV *	846	static SV *
602	decode_str (dec_t *dec, int utf8)	847	decode_str (dec_t *dec, int utf8)
603	{	848	{
604	SV *sv = 0;	849	SV *sv = 0;
605		850
606	if ((*dec->cur & 31) == 31)	851	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
607	{	852	{
		853	// indefinite length strings
608	++dec->cur;	854	++dec->cur;
609		855
		856	U8 major = *dec->cur & MAJOR_MISC;
		857
610	sv = newSVpvn ("", 0);	858	sv = newSVpvn ("", 0);
611		859
612	// not very fast, and certainly not robust against illegal input
613	for (;;)	860	for (;;)
614	{	861	{
615	WANT (1);	862	WANT (1);
616		863
617	if (*dec->cur == (0xe0 | 31))	864	if ((*dec->cur - major) > LENGTH_EXT8)
		865	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
618	{	866	{
619	++dec->cur;	867	++dec->cur;
620	break;	868	break;
621	}	869	}
		870	else
		871	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
622		872
623	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;
624	}	878	}
625	}	879	}
626	else	880	else
627	{	881	{
628	STRLEN len = decode_uint (dec);	882	STRLEN len = decode_uint (dec);
629		883
630	WANT (len);	884	WANT (len);
631	sv = newSVpvn (dec->cur, len);	885	sv = newSVpvn (dec->cur, len);
632	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));
633	}	891	}
634		892
635	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
636	SvUTF8_on (sv);	899	SvUTF8_on (sv);
		900	}
637		901
638	return sv;	902	return sv;
639		903
640	fail:	904	fail:
641	SvREFCNT_dec (sv);	905	SvREFCNT_dec (sv);
…		…
643	}	907	}
644		908
645	static SV *	909	static SV *
646	decode_tagged (dec_t *dec)	910	decode_tagged (dec_t *dec)
647	{	911	{
		912	SV *sv = 0;
648	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:
649	SV *sv = decode_sv (dec);	920	sv = decode_sv (dec);
		921	break;
650		922
651	if (tag == CBOR_TAG_MAGIC)	923	case CBOR_TAG_INDIRECTION:
652	return sv;	924	sv = newRV_noinc (decode_sv (dec));
		925	break;
653		926
654	if (tag == CBOR_TAG_PERL_OBJECT)	927	case CBOR_TAG_STRINGREF_NAMESPACE:
655	{	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
656	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	999	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
657	ERR ("corrupted CBOR data (non-array perl object)");	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;
658		1044	}
659	// TODO	1045	break;
660	}
661		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	{
662	AV *av = newAV ();	1076	AV *av = newAV ();
663	av_push (av, newSVuv (tag));	1077	av_push (av, newSVuv (tag));
664	av_push (av, sv);	1078	av_push (av, sv);
665		1079
666	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1080	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
667	? cbor_tagged_stash	1081	? cbor_tagged_stash
668	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1082	: gv_stashpv ("CBOR::XS::Tagged" , 1);
669
670	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1083	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1084	}
		1085
		1086	PUTBACK;
		1087
		1088	FREETMPS; LEAVE;
		1089	}
		1090	break;
		1091	}
		1092
		1093	return sv;
671		1094
672	fail:	1095	fail:
673	SvREFCNT_dec (sv);	1096	SvREFCNT_dec (sv);
674	return &PL_sv_undef;	1097	return &PL_sv_undef;
675	}	1098	}
…		…
677	static SV *	1100	static SV *
678	decode_sv (dec_t *dec)	1101	decode_sv (dec_t *dec)
679	{	1102	{
680	WANT (1);	1103	WANT (1);
681		1104
682	switch (*dec->cur >> 5)	1105	switch (*dec->cur >> MAJOR_SHIFT)
683	{	1106	{
684	case 0: // unsigned int	1107	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
685	return newSVuv (decode_uint (dec));	1108	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
686	case 1: // negative int	1109	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
687	return newSViv (-1 - (IV)decode_uint (dec));	1110	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
688	case 2: // octet string	1111	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
689	return decode_str (dec, 0);	1112	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
690	case 3: // utf-8 string	1113	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
691	return decode_str (dec, 1);	1114
692	case 4: // array	1115	case MAJOR_MISC >> MAJOR_SHIFT:
693	return decode_av (dec);
694	case 5: // map
695	return decode_hv (dec);
696	case 6: // tag
697	return decode_tagged (dec);
698	case 7: // misc
699	switch (*dec->cur++ & 31)	1116	switch (*dec->cur++ & MINOR_MASK)
700	{	1117	{
701	case 20:	1118	case SIMPLE_FALSE:
702	#if CBOR_SLOW	1119	#if CBOR_SLOW
703	types_false = get_bool ("Types::Serialiser::false");	1120	types_false = get_bool ("Types::Serialiser::false");
704	#endif	1121	#endif
705	return newSVsv (types_false);	1122	return newSVsv (types_false);
706	case 21:	1123	case SIMPLE_TRUE:
707	#if CBOR_SLOW	1124	#if CBOR_SLOW
708	types_true = get_bool ("Types::Serialiser::true");	1125	types_true = get_bool ("Types::Serialiser::true");
709	#endif	1126	#endif
710	return newSVsv (types_true);	1127	return newSVsv (types_true);
711	case 22:	1128	case SIMPLE_NULL:
712	return newSVsv (&PL_sv_undef);	1129	return newSVsv (&PL_sv_undef);
713	case 23:	1130	case SIMPLE_UNDEF:
714	#if CBOR_SLOW	1131	#if CBOR_SLOW
715	types_error = get_bool ("Types::Serialiser::error");	1132	types_error = get_bool ("Types::Serialiser::error");
716	#endif	1133	#endif
717	return newSVsv (types_error);	1134	return newSVsv (types_error);
718		1135
719	case 25:	1136	case MISC_FLOAT16:
720	{	1137	{
721	WANT (2);	1138	WANT (2);
722		1139
723	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1140	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
724	dec->cur += 2;	1141	dec->cur += 2;
725		1142
726	return newSVnv (ecb_binary16_to_float (fp));	1143	return newSVnv (ecb_binary16_to_float (fp));
727	}	1144	}
728		1145
729	case 26:	1146	case MISC_FLOAT32:
730	{	1147	{
731	uint32_t fp;	1148	uint32_t fp;
732	WANT (4);	1149	WANT (4);
733	memcpy (&fp, dec->cur, 4);	1150	memcpy (&fp, dec->cur, 4);
734	dec->cur += 4;	1151	dec->cur += 4;
…		…
737	fp = ecb_bswap32 (fp);	1154	fp = ecb_bswap32 (fp);
738		1155
739	return newSVnv (ecb_binary32_to_float (fp));	1156	return newSVnv (ecb_binary32_to_float (fp));
740	}	1157	}
741		1158
742	case 27:	1159	case MISC_FLOAT64:
743	{	1160	{
744	uint64_t fp;	1161	uint64_t fp;
745	WANT (8);	1162	WANT (8);
746	memcpy (&fp, dec->cur, 8);	1163	memcpy (&fp, dec->cur, 8);
747	dec->cur += 8;	1164	dec->cur += 8;
…		…
750	fp = ecb_bswap64 (fp);	1167	fp = ecb_bswap64 (fp);
751		1168
752	return newSVnv (ecb_binary64_to_double (fp));	1169	return newSVnv (ecb_binary64_to_double (fp));
753	}	1170	}
754		1171
755	// 0..19 unassigned	1172	// 0..19 unassigned simple
756	// 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
757	default:	1176	default:
758	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1177	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
759	}	1178	}
760		1179
761	break;	1180	break;
762	}	1181	}
763		1182
…		…
766	}	1185	}
767		1186
768	static SV *	1187	static SV *
769	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1188	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
770	{	1189	{
771	dec_t dec;	1190	dec_t dec = { 0 };
772	SV *sv;	1191	SV *sv;
		1192	STRLEN len;
		1193	char *data = SvPVbyte (string, len);
773		1194
774	/* work around bugs in 5.10 where manipulating magic values
775	* makes perl ignore the magic in subsequent accesses.
776	* also make a copy of non-PV values, to get them into a clean
777	* state (SvPV should do that, but it's buggy, see below).
778	*/
779	/*SvGETMAGIC (string);*/
780	if (SvMAGICAL (string) || !SvPOK (string))
781	string = sv_2mortal (newSVsv (string));
782
783	SvUPGRADE (string, SVt_PV);
784
785	/* work around a bug in perl 5.10, which causes SvCUR to fail an
786	* assertion with -DDEBUGGING, although SvCUR is documented to
787	* return the xpv_cur field which certainly exists after upgrading.
788	* according to nicholas clark, calling SvPOK fixes this.
789	* But it doesn't fix it, so try another workaround, call SvPV_nolen
790	* and hope for the best.
791	* Damnit, SvPV_nolen still trips over yet another assertion. This
792	* assertion business is seriously broken, try yet another workaround
793	* for the broken -DDEBUGGING.
794	*/
795	{
796	#ifdef DEBUGGING
797	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
798	#else
799	STRLEN offset = SvCUR (string);
800	#endif
801
802	if (offset > cbor->max_size && cbor->max_size)	1195	if (len > cbor->max_size && cbor->max_size)
803	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1196	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
804	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1197	(unsigned long)len, (unsigned long)cbor->max_size);
805	}
806
807	sv_utf8_downgrade (string, 0);
808		1198
809	dec.cbor = *cbor;	1199	dec.cbor = *cbor;
810	dec.cur = (U8 *)SvPVX (string);	1200	dec.cur = (U8 *)data;
811	dec.end = (U8 *)SvEND (string);	1201	dec.end = (U8 *)data + len;
812	dec.err = 0;
813	dec.depth = 0;
814		1202
815	sv = decode_sv (&dec);	1203	sv = decode_sv (&dec);
816		1204
817	if (offset_return)	1205	if (offset_return)
818	*offset_return = dec.cur;	1206	*offset_return = dec.cur;
…		…
821	if (dec.cur != dec.end && !dec.err)	1209	if (dec.cur != dec.end && !dec.err)
822	dec.err = "garbage after CBOR object";	1210	dec.err = "garbage after CBOR object";
823		1211
824	if (dec.err)	1212	if (dec.err)
825	{	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
826	SvREFCNT_dec (sv);	1225	SvREFCNT_dec (sv);
827	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);
828	}	1227	}
829		1228
830	sv = sv_2mortal (sv);	1229	sv = sv_2mortal (sv);
831		1230
832	return sv;	1231	return sv;
833	}	1232	}
834		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
835	/////////////////////////////////////////////////////////////////////////////	1358	/////////////////////////////////////////////////////////////////////////////
836	// XS interface functions	1359	// XS interface functions
837		1360
838	MODULE = CBOR::XS PACKAGE = CBOR::XS	1361	MODULE = CBOR::XS PACKAGE = CBOR::XS
839		1362
…		…
846	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);	1369	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
847		1370
848	types_true = get_bool ("Types::Serialiser::true" );	1371	types_true = get_bool ("Types::Serialiser::true" );
849	types_false = get_bool ("Types::Serialiser::false");	1372	types_false = get_bool ("Types::Serialiser::false");
850	types_error = get_bool ("Types::Serialiser::error");	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);
851	}	1379	}
852		1380
853	PROTOTYPES: DISABLE	1381	PROTOTYPES: DISABLE
854		1382
855	void CLONE (...)	1383	void CLONE (...)
…		…
873		1401
874	void shrink (CBOR *self, int enable = 1)	1402	void shrink (CBOR *self, int enable = 1)
875	ALIAS:	1403	ALIAS:
876	shrink = F_SHRINK	1404	shrink = F_SHRINK
877	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
878	PPCODE:	1411	PPCODE:
879	{	1412	{
880	if (enable)	1413	if (enable)
881	self->flags |= ix;	1414	self->flags |= ix;
882	else	1415	else
…		…
887		1420
888	void get_shrink (CBOR *self)	1421	void get_shrink (CBOR *self)
889	ALIAS:	1422	ALIAS:
890	get_shrink = F_SHRINK	1423	get_shrink = F_SHRINK
891	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
892	PPCODE:	1429	PPCODE:
893	XPUSHs (boolSV (self->flags & ix));	1430	XPUSHs (boolSV (self->flags & ix));
894		1431
895	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1432	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
896	PPCODE:	1433	PPCODE:
…		…
912	CODE:	1449	CODE:
913	RETVAL = self->max_size;	1450	RETVAL = self->max_size;
914	OUTPUT:	1451	OUTPUT:
915	RETVAL	1452	RETVAL
916		1453
917	#if 0 //TODO	1454	void filter (CBOR *self, SV *filter = 0)
918
919	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
920	PPCODE:	1455	PPCODE:
921	{
922	SvREFCNT_dec (self->cb_object);	1456	SvREFCNT_dec (self->filter);
923	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1457	self->filter = filter ? newSVsv (filter) : filter;
924
925	XPUSHs (ST (0));	1458	XPUSHs (ST (0));
926	}
927		1459
928	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1460	SV *get_filter (CBOR *self)
929	PPCODE:	1461	CODE:
930	{	1462	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
931	if (!self->cb_sk_object)	1463	OUTPUT:
932	self->cb_sk_object = newHV ();	1464	RETVAL
933
934	if (SvOK (cb))
935	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
936	else
937	{
938	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
939
940	if (!HvKEYS (self->cb_sk_object))
941	{
942	SvREFCNT_dec (self->cb_sk_object);
943	self->cb_sk_object = 0;
944	}
945	}
946
947	XPUSHs (ST (0));
948	}
949
950	#endif
951		1465
952	void encode (CBOR *self, SV *scalar)	1466	void encode (CBOR *self, SV *scalar)
953	PPCODE:	1467	PPCODE:
954	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1468	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
955	XPUSHs (scalar);	1469	XPUSHs (scalar);
…		…
968	EXTEND (SP, 2);	1482	EXTEND (SP, 2);
969	PUSHs (sv);	1483	PUSHs (sv);
970	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1484	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
971	}	1485	}
972		1486
973	#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	}
974		1538
975	void DESTROY (CBOR *self)	1539	void DESTROY (CBOR *self)
976	CODE:	1540	PPCODE:
977	SvREFCNT_dec (self->cb_sk_object);	1541	cbor_free (self);
978	SvREFCNT_dec (self->cb_object);
979
980	#endif
981		1542
982	PROTOTYPES: ENABLE	1543	PROTOTYPES: ENABLE
983		1544
984	void encode_cbor (SV *scalar)	1545	void encode_cbor (SV *scalar)
		1546	ALIAS:
		1547	encode_cbor = 0
		1548	encode_cbor_sharing = F_ALLOW_SHARING
985	PPCODE:	1549	PPCODE:
986	{	1550	{
987	CBOR cbor;	1551	CBOR cbor;
988	cbor_init (&cbor);	1552	cbor_init (&cbor);
		1553	cbor.flags |= ix;
989	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1554	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
990	XPUSHs (scalar);	1555	XPUSHs (scalar);
991	}	1556	}
992		1557
993	void decode_cbor (SV *cborstr)	1558	void decode_cbor (SV *cborstr)

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