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

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.9 by root, Sun Oct 27 10:17:12 2013 UTC vs.
Revision 1.45 by root, Sun Dec 14 05:48:39 2014 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_VALIDATE_UTF8 0x00000020UL
45		106
46	#define INIT_SIZE 32 // initial scalar size to be allocated	107	#define INIT_SIZE 32 // initial scalar size to be allocated
47		108
48	#define SB do {	109	#define SB do {
49	#define SE } while (0)	110	#define SE } while (0)
…		…
60	#else	121	#else
61	# define CBOR_SLOW 0	122	# define CBOR_SLOW 0
62	# define CBOR_STASH cbor_stash	123	# define CBOR_STASH cbor_stash
63	#endif	124	#endif
64		125
65	static HV cbor_stash, cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	126	static HV cbor_stash, types_boolean_stash, types_error_stash, cbor_tagged_stash; // CBOR::XS::
66	static SV cbor_true, cbor_false;	127	static SV types_true, types_false, types_error, sv_cbor, *default_filter;
67		128
68	typedef struct {	129	typedef struct {
69	U32 flags;	130	U32 flags;
70	U32 max_depth;	131	U32 max_depth;
71	STRLEN max_size;	132	STRLEN max_size;
		133	SV *filter;
		134
		135	// for the incremental parser
		136	STRLEN incr_pos; // the current offset into the text
		137	STRLEN incr_need; // minimum bytes needed to decode
		138	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
72	} CBOR;	139	} CBOR;
73		140
74	ecb_inline void	141	ecb_inline void
75	cbor_init (CBOR *cbor)	142	cbor_init (CBOR *cbor)
76	{	143	{
77	Zero (cbor, 1, CBOR);	144	Zero (cbor, 1, CBOR);
78	cbor->max_depth = 512;	145	cbor->max_depth = 512;
		146	}
		147
		148	ecb_inline void
		149	cbor_free (CBOR *cbor)
		150	{
		151	SvREFCNT_dec (cbor->filter);
		152	SvREFCNT_dec (cbor->incr_count);
79	}	153	}
80		154
81	/////////////////////////////////////////////////////////////////////////////	155	/////////////////////////////////////////////////////////////////////////////
82	// utility functions	156	// utility functions
83		157
…		…
105	SvPV_renew (sv, SvCUR (sv) + 1);	179	SvPV_renew (sv, SvCUR (sv) + 1);
106	#endif	180	#endif
107	}	181	}
108	}	182	}
109		183
110	/////////////////////////////////////////////////////////////////////////////	184	// minimum length of a string to be registered for stringref
111	// fp hell	185	ecb_inline int
112		186	minimum_string_length (UV idx)
113	//TODO	187	{
		188	return idx > 23
		189	? idx > 0xffU
		190	? idx > 0xffffU
		191	? idx > 0xffffffffU
		192	? 11
		193	: 7
		194	: 5
		195	: 4
		196	: 3;
		197	}
114		198
115	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
116	// encoder	200	// encoder
117		201
118	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
121	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
122	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
123	SV *sv; // result scalar	207	SV *sv; // result scalar
124	CBOR cbor;	208	CBOR cbor;
125	U32 depth; // recursion level	209	U32 depth; // recursion level
		210	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		211	UV stringref_idx;
		212	HV *shareable; // ptr => index, or 0
		213	UV shareable_idx;
126	} enc_t;	214	} enc_t;
127		215
128	ecb_inline void	216	ecb_inline void
129	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
130	{	218	{
…		…
147	static void	235	static void
148	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
149	{	237	{
150	need (enc, 9);	238	need (enc, 9);
151		239
152	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
153	*enc->cur++ = major \| len;	241	*enc->cur++ = major \| len;
154	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
155	{	243	{
156	*enc->cur++ = major \| 24;	244	*enc->cur++ = major \| LENGTH_EXT1;
157	*enc->cur++ = len;	245	*enc->cur++ = len;
158	}	246	}
159	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
160	{	248	{
161	*enc->cur++ = major \| 25;	249	*enc->cur++ = major \| LENGTH_EXT2;
162	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
163	*enc->cur++ = len;	251	*enc->cur++ = len;
164	}	252	}
165	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
166	{	254	{
167	*enc->cur++ = major \| 26;	255	*enc->cur++ = major \| LENGTH_EXT4;
168	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
169	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
170	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
171	*enc->cur++ = len;	259	*enc->cur++ = len;
172	}	260	}
173	else	261	else
174	{	262	{
175	*enc->cur++ = major \| 27;	263	*enc->cur++ = major \| LENGTH_EXT8;
176	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
177	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
178	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
179	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
180	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
182	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
183	*enc->cur++ = len;	271	*enc->cur++ = len;
184	}	272	}
185	}	273	}
186		274
187	static void	275	ecb_inline void
		276	encode_tag (enc_t *enc, UV tag)
		277	{
		278	encode_uint (enc, MAJOR_TAG, tag);
		279	}
		280
		281	ecb_inline void
188	encode_str (enc_t enc, int utf8, char str, STRLEN len)	282	encode_str (enc_t enc, int utf8, char str, STRLEN len)
189	{	283	{
190	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	284	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
191	need (enc, len);	285	need (enc, len);
192	memcpy (enc->cur, str, len);	286	memcpy (enc->cur, str, len);
193	enc->cur += len;	287	enc->cur += len;
194	}	288	}
195		289
		290	static void
		291	encode_strref (enc_t enc, int utf8, char str, STRLEN len)
		292	{
		293	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		294	{
		295	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		296
		297	if (SvOK (*svp))
		298	{
		299	// already registered, use stringref
		300	encode_tag (enc, CBOR_TAG_STRINGREF);
		301	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		302	return;
		303	}
		304	else if (len >= minimum_string_length (enc->stringref_idx))
		305	{
		306	// register only
		307	sv_setuv (*svp, enc->stringref_idx);
		308	++enc->stringref_idx;
		309	}
		310	}
		311
		312	encode_str (enc, utf8, str, len);
		313	}
		314
196	static void encode_sv (enc_t enc, SV sv);	315	static void encode_sv (enc_t enc, SV sv);
197		316
198	static void	317	static void
199	encode_av (enc_t enc, AV av)	318	encode_av (enc_t enc, AV av)
200	{	319	{
…		…
203	if (enc->depth >= enc->cbor.max_depth)	322	if (enc->depth >= enc->cbor.max_depth)
204	croak (ERR_NESTING_EXCEEDED);	323	croak (ERR_NESTING_EXCEEDED);
205		324
206	++enc->depth;	325	++enc->depth;
207		326
208	encode_uint (enc, 0x80, len + 1);	327	encode_uint (enc, MAJOR_ARRAY, len + 1);
209		328
		329	if (SvMAGICAL (av))
210	for (i = 0; i <= len; ++i)	330	for (i = 0; i <= len; ++i)
211	{	331	{
212	SV **svp = av_fetch (av, i, 0);	332	SV **svp = av_fetch (av, i, 0);
213	encode_sv (enc, svp ? *svp : &PL_sv_undef);	333	encode_sv (enc, svp ? *svp : &PL_sv_undef);
214	}	334	}
		335	else
		336	for (i = 0; i <= len; ++i)
		337	encode_sv (enc, AvARRAY (av)[i]);
215		338
216	--enc->depth;	339	--enc->depth;
217	}	340	}
218		341
219	static void	342	static void
…		…
228		351
229	int pairs = hv_iterinit (hv);	352	int pairs = hv_iterinit (hv);
230	int mg = SvMAGICAL (hv);	353	int mg = SvMAGICAL (hv);
231		354
232	if (mg)	355	if (mg)
233	encode_ch (enc, 0xa0 \| 31);	356	encode_ch (enc, MAJOR_MAP \| MINOR_INDEF);
234	else	357	else
235	encode_uint (enc, 0xa0, pairs);	358	encode_uint (enc, MAJOR_MAP, pairs);
236		359
237	while ((he = hv_iternext (hv)))	360	while ((he = hv_iternext (hv)))
238	{	361	{
239	if (HeKLEN (he) == HEf_SVKEY)	362	if (HeKLEN (he) == HEf_SVKEY)
240	encode_sv (enc, HeSVKEY (he));	363	encode_sv (enc, HeSVKEY (he));
241	else	364	else
242	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	365	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
243		366
244	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	367	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
245	}	368	}
246		369
247	if (mg)	370	if (mg)
248	encode_ch (enc, 0xe0 \| 31);	371	encode_ch (enc, MAJOR_MISC \| MINOR_INDEF);
249		372
250	--enc->depth;	373	--enc->depth;
251	}	374	}
252		375
253	// encode objects, arrays and special \0=false and \1=true values.	376	// encode objects, arrays and special \0=false and \1=true values.
254	static void	377	static void
255	encode_rv (enc_t enc, SV sv)	378	encode_rv (enc_t enc, SV sv)
256	{	379	{
257	svtype svt;
258
259	SvGETMAGIC (sv);	380	SvGETMAGIC (sv);
		381
260	svt = SvTYPE (sv);	382	svtype svt = SvTYPE (sv);
261		383
262	if (ecb_expect_false (SvOBJECT (sv)))	384	if (ecb_expect_false (SvOBJECT (sv)))
263	{	385	{
264	HV *boolean_stash = !CBOR_SLOW \|\| cbor_boolean_stash	386	HV *boolean_stash = !CBOR_SLOW \|\| types_boolean_stash
265	? cbor_boolean_stash	387	? types_boolean_stash
266	: gv_stashpv ("CBOR::XS::Boolean", 1);	388	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		389	HV *error_stash = !CBOR_SLOW \|\| types_error_stash
		390	? types_error_stash
		391	: gv_stashpv ("Types::Serialiser::Error", 1);
267	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	392	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
268	? cbor_tagged_stash	393	? cbor_tagged_stash
269	: gv_stashpv ("CBOR::XS::Tagged" , 1);	394	: gv_stashpv ("CBOR::XS::Tagged" , 1);
270		395
		396	HV *stash = SvSTASH (sv);
		397
271	if (SvSTASH (sv) == boolean_stash)	398	if (stash == boolean_stash)
272	encode_ch (enc, SvIV (sv) ? 0xe0 \| 21 : 0xe0 \| 20);	399	{
		400	encode_ch (enc, SvIV (sv) ? MAJOR_MISC \| SIMPLE_TRUE : MAJOR_MISC \| SIMPLE_FALSE);
		401	return;
		402	}
		403	else if (stash == error_stash)
		404	{
		405	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
		406	return;
		407	}
273	else if (SvSTASH (sv) == tagged_stash)	408	else if (stash == tagged_stash)
274	{	409	{
275	if (svt != SVt_PVAV)	410	if (svt != SVt_PVAV)
276	croak ("encountered CBOR::XS::Tagged object that isn't an array");	411	croak ("encountered CBOR::XS::Tagged object that isn't an array");
277		412
278	encode_uint (enc, 0xc0, SvUV (av_fetch ((AV )sv, 0, 1)));	413	encode_uint (enc, MAJOR_TAG, SvUV (av_fetch ((AV )sv, 0, 1)));
279	encode_sv (enc, av_fetch ((AV )sv, 1, 1));	414	encode_sv (enc, av_fetch ((AV )sv, 1, 1));
		415
		416	return;
		417	}
		418	}
		419
		420	if (ecb_expect_false (SvREFCNT (sv) > 1)
		421	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		422	{
		423	if (!enc->shareable)
		424	enc->shareable = (HV )sv_2mortal ((SV )newHV ());
		425
		426	SV *svp = hv_fetch (enc->shareable, (char )&sv, sizeof (sv), 1);
		427
		428	if (SvOK (*svp))
		429	{
		430	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		431	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		432	return;
280	}	433	}
281	else	434	else
282	{	435	{
		436	sv_setuv (*svp, enc->shareable_idx);
		437	++enc->shareable_idx;
		438	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		439	}
		440	}
		441
		442	if (ecb_expect_false (SvOBJECT (sv)))
		443	{
		444	HV *stash = SvSTASH (sv);
		445	GV *method;
		446
		447	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		448	{
		449	dSP;
		450
		451	ENTER; SAVETMPS; PUSHMARK (SP);
283	// we re-bless the reference to get overload and other niceties right	452	// we re-bless the reference to get overload and other niceties right
284	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
285
286	if (to_cbor)
287	{
288	dSP;
289
290	ENTER; SAVETMPS; PUSHMARK (SP);
291	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	453	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
292		454
293	// calling with G_SCALAR ensures that we always get a 1 return value
294	PUTBACK;	455	PUTBACK;
		456	// G_SCALAR ensures that return value is 1
295	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	457	call_sv ((SV *)GvCV (method), G_SCALAR);
296	SPAGAIN;	458	SPAGAIN;
297		459
298	// catch this surprisingly common error	460	// catch this surprisingly common error
299	if (SvROK (TOPs) && SvRV (TOPs) == sv)	461	if (SvROK (TOPs) && SvRV (TOPs) == sv)
300	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	462	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
301		463
302	sv = POPs;	464	encode_sv (enc, POPs);
		465
303	PUTBACK;	466	PUTBACK;
304		467
305	encode_sv (enc, sv);
306
307	FREETMPS; LEAVE;	468	FREETMPS; LEAVE;
308	}	469	}
		470	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		471	{
		472	dSP;
		473
		474	ENTER; SAVETMPS; PUSHMARK (SP);
		475	EXTEND (SP, 2);
		476	// we re-bless the reference to get overload and other niceties right
		477	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		478	PUSHs (sv_cbor);
		479
		480	PUTBACK;
		481	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		482	SPAGAIN;
		483
		484	// catch this surprisingly common error
		485	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		486	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		487
		488	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		489	encode_uint (enc, MAJOR_ARRAY, count + 1);
		490	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		491
		492	while (count)
		493	encode_sv (enc, SP[1 - count--]);
		494
		495	PUTBACK;
		496
		497	FREETMPS; LEAVE;
		498	}
309	else	499	else
310	croak ("encountered object '%s', but no TO_CBOR method available on it",	500	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
311	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	501	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
312	}
313	}	502	}
314	else if (svt == SVt_PVHV)	503	else if (svt == SVt_PVHV)
315	encode_hv (enc, (HV *)sv);	504	encode_hv (enc, (HV *)sv);
316	else if (svt == SVt_PVAV)	505	else if (svt == SVt_PVAV)
317	encode_av (enc, (AV *)sv);	506	encode_av (enc, (AV *)sv);
318	else if (svt < SVt_PVAV)
319	{
320	STRLEN len = 0;
321	char *pv = svt ? SvPV (sv, len) : 0;
322
323	if (len == 1 && *pv == '1')
324	encode_ch (enc, 0xe0 \| 21);
325	else if (len == 1 && *pv == '0')
326	encode_ch (enc, 0xe0 \| 20);
327	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
328	encode_ch (enc, 0xe0 \| 23);
329	else
330	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
331	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
332	}
333	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
334	encode_ch (enc, 0xe0 \| 23);
335	else	507	else
336	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	508	{
337	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	509	encode_tag (enc, CBOR_TAG_INDIRECTION);
		510	encode_sv (enc, sv);
		511	}
338	}	512	}
339		513
340	static void	514	static void
341	encode_nv (enc_t enc, SV sv)	515	encode_nv (enc_t enc, SV sv)
342	{	516	{
343	double nv = SvNVX (sv);	517	double nv = SvNVX (sv);
344		518
345	need (enc, 9);	519	need (enc, 9);
346		520
347	if (ecb_expect_false (nv == (U32)nv))	521	if (ecb_expect_false (nv == (NV)(U32)nv))
348	encode_uint (enc, 0x00, (U32)nv);	522	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
349	//TODO: maybe I32?	523	//TODO: maybe I32?
350	else if (ecb_expect_false (nv == (float)nv))	524	else if (ecb_expect_false (nv == (float)nv))
351	{	525	{
352	uint32_t fp = ecb_float_to_binary32 (nv);	526	uint32_t fp = ecb_float_to_binary32 (nv);
353		527
354	*enc->cur++ = 0xe0 \| 26;	528	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT32;
355		529
356	if (!ecb_big_endian ())	530	if (!ecb_big_endian ())
357	fp = ecb_bswap32 (fp);	531	fp = ecb_bswap32 (fp);
358		532
359	memcpy (enc->cur, &fp, 4);	533	memcpy (enc->cur, &fp, 4);
…		…
361	}	535	}
362	else	536	else
363	{	537	{
364	uint64_t fp = ecb_double_to_binary64 (nv);	538	uint64_t fp = ecb_double_to_binary64 (nv);
365		539
366	*enc->cur++ = 0xe0 \| 27;	540	*enc->cur++ = MAJOR_MISC \| MISC_FLOAT64;
367		541
368	if (!ecb_big_endian ())	542	if (!ecb_big_endian ())
369	fp = ecb_bswap64 (fp);	543	fp = ecb_bswap64 (fp);
370		544
371	memcpy (enc->cur, &fp, 8);	545	memcpy (enc->cur, &fp, 8);
…		…
380		554
381	if (SvPOKp (sv))	555	if (SvPOKp (sv))
382	{	556	{
383	STRLEN len;	557	STRLEN len;
384	char *str = SvPV (sv, len);	558	char *str = SvPV (sv, len);
385	encode_str (enc, SvUTF8 (sv), str, len);	559	encode_strref (enc, SvUTF8 (sv), str, len);
386	}	560	}
387	else if (SvNOKp (sv))	561	else if (SvNOKp (sv))
388	encode_nv (enc, sv);	562	encode_nv (enc, sv);
389	else if (SvIOKp (sv))	563	else if (SvIOKp (sv))
390	{	564	{
391	if (SvIsUV (sv))	565	if (SvIsUV (sv))
392	encode_uint (enc, 0x00, SvUVX (sv));	566	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
393	else if (SvIVX (sv) >= 0)	567	else if (SvIVX (sv) >= 0)
394	encode_uint (enc, 0x00, SvIVX (sv));	568	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
395	else	569	else
396	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	570	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
397	}	571	}
398	else if (SvROK (sv))	572	else if (SvROK (sv))
399	encode_rv (enc, SvRV (sv));	573	encode_rv (enc, SvRV (sv));
400	else if (!SvOK (sv))	574	else if (!SvOK (sv))
401	encode_ch (enc, 0xe0 \| 22);	575	encode_ch (enc, MAJOR_MISC \| SIMPLE_NULL);
402	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	576	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
403	encode_ch (enc, 0xe0 \| 23);	577	encode_ch (enc, MAJOR_MISC \| SIMPLE_UNDEF);
404	else	578	else
405	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	579	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
406	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	580	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
407	}	581	}
408		582
409	static SV *	583	static SV *
410	encode_cbor (SV scalar, CBOR cbor)	584	encode_cbor (SV scalar, CBOR cbor)
411	{	585	{
412	enc_t enc;	586	enc_t enc = { };
413		587
414	enc.cbor = *cbor;	588	enc.cbor = *cbor;
415	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	589	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
416	enc.cur = SvPVX (enc.sv);	590	enc.cur = SvPVX (enc.sv);
417	enc.end = SvEND (enc.sv);	591	enc.end = SvEND (enc.sv);
418	enc.depth = 0;
419		592
420	SvPOK_only (enc.sv);	593	SvPOK_only (enc.sv);
		594
		595	if (cbor->flags & F_PACK_STRINGS)
		596	{
		597	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		598	enc.stringref[0]= (HV )sv_2mortal ((SV )newHV ());
		599	enc.stringref[1]= (HV )sv_2mortal ((SV )newHV ());
		600	}
		601
421	encode_sv (&enc, scalar);	602	encode_sv (&enc, scalar);
422		603
423	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	604	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
424	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	605	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
425		606
…		…
439	U8 *end; // end of input string	620	U8 *end; // end of input string
440	const char *err; // parse error, if != 0	621	const char *err; // parse error, if != 0
441	CBOR cbor;	622	CBOR cbor;
442	U32 depth; // recursion depth	623	U32 depth; // recursion depth
443	U32 maxdepth; // recursion depth limit	624	U32 maxdepth; // recursion depth limit
		625	AV *shareable;
		626	AV *stringref;
		627	SV *decode_tagged;
444	} dec_t;	628	} dec_t;
445		629
446	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	630	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
447		631
448	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	632	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
…		…
451	#define DEC_DEC_DEPTH --dec->depth	635	#define DEC_DEC_DEPTH --dec->depth
452		636
453	static UV	637	static UV
454	decode_uint (dec_t *dec)	638	decode_uint (dec_t *dec)
455	{	639	{
456	switch (*dec->cur & 31)	640	U8 m = *dec->cur & MINOR_MASK;
457	{	641	++dec->cur;
458	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
459	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
460	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
461	return *dec->cur++ & 31;
462		642
463	case 24:	643	if (ecb_expect_true (m < LENGTH_EXT1))
		644	return m;
		645	else if (ecb_expect_true (m == LENGTH_EXT1))
		646	{
464	WANT (2);	647	WANT (1);
465	dec->cur += 2;	648	dec->cur += 1;
466	return dec->cur[-1];	649	return dec->cur[-1];
467		650	}
468	case 25:	651	else if (ecb_expect_true (m == LENGTH_EXT2))
		652	{
469	WANT (3);	653	WANT (2);
470	dec->cur += 3;	654	dec->cur += 2;
471	return (((UV)dec->cur[-2]) << 8)	655	return (((UV)dec->cur[-2]) << 8)
472	\| ((UV)dec->cur[-1]);	656	\| ((UV)dec->cur[-1]);
473		657	}
474	case 26:	658	else if (ecb_expect_true (m == LENGTH_EXT4))
		659	{
475	WANT (5);	660	WANT (4);
476	dec->cur += 5;	661	dec->cur += 4;
477	return (((UV)dec->cur[-4]) << 24)	662	return (((UV)dec->cur[-4]) << 24)
478	\| (((UV)dec->cur[-3]) << 16)	663	\| (((UV)dec->cur[-3]) << 16)
479	\| (((UV)dec->cur[-2]) << 8)	664	\| (((UV)dec->cur[-2]) << 8)
480	\| ((UV)dec->cur[-1]);	665	\| ((UV)dec->cur[-1]);
481		666	}
482	case 27:	667	else if (ecb_expect_true (m == LENGTH_EXT8))
		668	{
483	WANT (9);	669	WANT (8);
484	dec->cur += 9;	670	dec->cur += 8;
		671
		672	return
		673	#if UVSIZE < 8
		674	0
		675	#else
485	return (((UV)dec->cur[-8]) << 56)	676	(((UV)dec->cur[-8]) << 56)
486	\| (((UV)dec->cur[-7]) << 48)	677	\| (((UV)dec->cur[-7]) << 48)
487	\| (((UV)dec->cur[-6]) << 40)	678	\| (((UV)dec->cur[-6]) << 40)
488	\| (((UV)dec->cur[-5]) << 32)	679	\| (((UV)dec->cur[-5]) << 32)
		680	#endif
489	\| (((UV)dec->cur[-4]) << 24)	681	\| (((UV)dec->cur[-4]) << 24)
490	\| (((UV)dec->cur[-3]) << 16)	682	\| (((UV)dec->cur[-3]) << 16)
491	\| (((UV)dec->cur[-2]) << 8)	683	\| (((UV)dec->cur[-2]) << 8)
492	\| ((UV)dec->cur[-1]);	684	\| ((UV)dec->cur[-1]);
493		685	}
494	default:	686	else
495	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	687	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
496	}
497		688
498	fail:	689	fail:
499	return 0;	690	return 0;
500	}	691	}
501		692
…		…
506	{	697	{
507	AV *av = newAV ();	698	AV *av = newAV ();
508		699
509	DEC_INC_DEPTH;	700	DEC_INC_DEPTH;
510		701
511	if ((*dec->cur & 31) == 31)	702	if (*dec->cur == (MAJOR_ARRAY \| MINOR_INDEF))
512	{	703	{
513	++dec->cur;	704	++dec->cur;
514		705
515	for (;;)	706	for (;;)
516	{	707	{
517	WANT (1);	708	WANT (1);
518		709
519	if (*dec->cur == (0xe0 \| 31))	710	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
520	{	711	{
521	++dec->cur;	712	++dec->cur;
522	break;	713	break;
523	}	714	}
524		715
…		…
527	}	718	}
528	else	719	else
529	{	720	{
530	int i, len = decode_uint (dec);	721	int i, len = decode_uint (dec);
531		722
		723	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
532	av_fill (av, len - 1);	724	av_fill (av, len - 1);
533		725
534	for (i = 0; i < len; ++i)	726	for (i = 0; i < len; ++i)
535	AvARRAY (av)[i] = decode_sv (dec);	727	AvARRAY (av)[i] = decode_sv (dec);
536	}	728	}
…		…
542	SvREFCNT_dec (av);	734	SvREFCNT_dec (av);
543	DEC_DEC_DEPTH;	735	DEC_DEC_DEPTH;
544	return &PL_sv_undef;	736	return &PL_sv_undef;
545	}	737	}
546		738
		739	static void
		740	decode_he (dec_t dec, HV hv)
		741	{
		742	// for speed reasons, we specialcase single-string
		743	// byte or utf-8 strings as keys, but only when !stringref
		744
		745	if (ecb_expect_true (!dec->stringref))
		746	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		747	{
		748	I32 len = decode_uint (dec);
		749	char key = (char )dec->cur;
		750
		751	dec->cur += len;
		752
		753	hv_store (hv, key, len, decode_sv (dec), 0);
		754
		755	return;
		756	}
		757	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		758	{
		759	I32 len = decode_uint (dec);
		760	char key = (char )dec->cur;
		761
		762	dec->cur += len;
		763
		764	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		765	if (!is_utf8_string (key, len))
		766	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		767
		768	hv_store (hv, key, -len, decode_sv (dec), 0);
		769
		770	return;
		771	}
		772
		773	SV *k = decode_sv (dec);
		774	SV *v = decode_sv (dec);
		775
		776	hv_store_ent (hv, k, v, 0);
		777	SvREFCNT_dec (k);
		778
		779	fail:
		780	;
		781	}
		782
547	static SV *	783	static SV *
548	decode_hv (dec_t *dec)	784	decode_hv (dec_t *dec)
549	{	785	{
550	HV *hv = newHV ();	786	HV *hv = newHV ();
551		787
552	DEC_INC_DEPTH;	788	DEC_INC_DEPTH;
553		789
554	if ((*dec->cur & 31) == 31)	790	if (*dec->cur == (MAJOR_MAP \| MINOR_INDEF))
555	{	791	{
556	++dec->cur;	792	++dec->cur;
557		793
558	for (;;)	794	for (;;)
559	{	795	{
560	WANT (1);	796	WANT (1);
561		797
562	if (*dec->cur == (0xe0 \| 31))	798	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
563	{	799	{
564	++dec->cur;	800	++dec->cur;
565	break;	801	break;
566	}	802	}
567		803
568	SV *k = decode_sv (dec);	804	decode_he (dec, hv);
569	SV *v = decode_sv (dec);
570
571	hv_store_ent (hv, k, v, 0);
572	}	805	}
573	}	806	}
574	else	807	else
575	{	808	{
576	int len = decode_uint (dec);	809	int pairs = decode_uint (dec);
577		810
578	while (len--)	811	while (pairs--)
579	{	812	decode_he (dec, hv);
580	SV *k = decode_sv (dec);
581	SV *v = decode_sv (dec);
582
583	hv_store_ent (hv, k, v, 0);
584	}
585	}	813	}
586		814
587	DEC_DEC_DEPTH;	815	DEC_DEC_DEPTH;
588	return newRV_noinc ((SV *)hv);	816	return newRV_noinc ((SV *)hv);
589		817
…		…
596	static SV *	824	static SV *
597	decode_str (dec_t *dec, int utf8)	825	decode_str (dec_t *dec, int utf8)
598	{	826	{
599	SV *sv = 0;	827	SV *sv = 0;
600		828
601	if ((*dec->cur & 31) == 31)	829	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
602	{	830	{
		831	// indefinite length strings
603	++dec->cur;	832	++dec->cur;
604		833
		834	U8 major = *dec->cur & MAJOR_MISC;
		835
605	sv = newSVpvn ("", 0);	836	sv = newSVpvn ("", 0);
606		837
607	// not very fast, and certainly not robust against illegal input
608	for (;;)	838	for (;;)
609	{	839	{
610	WANT (1);	840	WANT (1);
611		841
612	if (*dec->cur == (0xe0 \| 31))	842	if ((*dec->cur - major) > LENGTH_EXT8)
		843	if (*dec->cur == (MAJOR_MISC \| MINOR_INDEF))
613	{	844	{
614	++dec->cur;	845	++dec->cur;
615	break;	846	break;
616	}	847	}
		848	else
		849	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
617		850
618	sv_catsv (sv, decode_sv (dec));	851	STRLEN len = decode_uint (dec);
		852
		853	WANT (len);
		854	sv_catpvn (sv, dec->cur, len);
		855	dec->cur += len;
619	}	856	}
620	}	857	}
621	else	858	else
622	{	859	{
623	STRLEN len = decode_uint (dec);	860	STRLEN len = decode_uint (dec);
624		861
625	WANT (len);	862	WANT (len);
626	sv = newSVpvn (dec->cur, len);	863	sv = newSVpvn (dec->cur, len);
627	dec->cur += len;	864	dec->cur += len;
		865
		866	if (ecb_expect_false (dec->stringref)
		867	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		868	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
628	}	869	}
629		870
630	if (utf8)	871	if (utf8)
		872	{
		873	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		874	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		875	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		876
631	SvUTF8_on (sv);	877	SvUTF8_on (sv);
		878	}
632		879
633	return sv;	880	return sv;
634		881
635	fail:	882	fail:
636	SvREFCNT_dec (sv);	883	SvREFCNT_dec (sv);
…		…
638	}	885	}
639		886
640	static SV *	887	static SV *
641	decode_tagged (dec_t *dec)	888	decode_tagged (dec_t *dec)
642	{	889	{
		890	SV *sv = 0;
643	UV tag = decode_uint (dec);	891	UV tag = decode_uint (dec);
		892
		893	WANT (1);
		894
		895	switch (tag)
		896	{
		897	case CBOR_TAG_MAGIC:
644	SV *sv = decode_sv (dec);	898	sv = decode_sv (dec);
		899	break;
645		900
646	if (tag == CBOR_TAG_MAGIC)	901	case CBOR_TAG_INDIRECTION:
647	return sv;	902	sv = newRV_noinc (decode_sv (dec));
		903	break;
648		904
649	if (tag == CBOR_TAG_PERL_OBJECT)	905	case CBOR_TAG_STRINGREF_NAMESPACE:
650	{	906	{
		907	ENTER; SAVETMPS;
		908
		909	SAVESPTR (dec->stringref);
		910	dec->stringref = (AV )sv_2mortal ((SV )newAV ());
		911
		912	sv = decode_sv (dec);
		913
		914	FREETMPS; LEAVE;
		915	}
		916	break;
		917
		918	case CBOR_TAG_STRINGREF:
		919	{
		920	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		921	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		922
		923	UV idx = decode_uint (dec);
		924
		925	if (!dec->stringref \|\| (int)idx > AvFILLp (dec->stringref))
		926	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		927
		928	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		929	}
		930	break;
		931
		932	case CBOR_TAG_VALUE_SHAREABLE:
		933	{
		934	if (ecb_expect_false (!dec->shareable))
		935	dec->shareable = (AV )sv_2mortal ((SV )newAV ());
		936
		937	if (dec->cbor.flags & F_ALLOW_CYCLES)
		938	{
		939	sv = newSV (0);
		940	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		941
		942	SV *osv = decode_sv (dec);
		943	sv_setsv (sv, osv);
		944	SvREFCNT_dec_NN (osv);
		945	}
		946	else
		947	{
		948	av_push (dec->shareable, &PL_sv_undef);
		949	int idx = AvFILLp (dec->shareable);
		950	sv = decode_sv (dec);
		951	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		952	}
		953	}
		954	break;
		955
		956	case CBOR_TAG_VALUE_SHAREDREF:
		957	{
		958	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		959	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		960
		961	UV idx = decode_uint (dec);
		962
		963	if (!dec->shareable \|\| (int)idx > AvFILLp (dec->shareable))
		964	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		965
		966	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		967
		968	if (sv == &PL_sv_undef)
		969	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		970	}
		971	break;
		972
		973	case CBOR_TAG_PERL_OBJECT:
		974	{
		975	sv = decode_sv (dec);
		976
651	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)	977	if (!SvROK (sv) \|\| SvTYPE (SvRV (sv)) != SVt_PVAV)
652	ERR ("corrupted CBOR data (non-array perl object)");	978	ERR ("corrupted CBOR data (non-array perl object)");
		979
		980	AV av = (AV )SvRV (sv);
		981	int len = av_len (av) + 1;
		982	HV stash = gv_stashsv (av_fetch (av, 0, 1), 0);
		983
		984	if (!stash)
		985	ERR ("cannot decode perl-object (package does not exist)");
		986
		987	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		988
		989	if (!method)
		990	ERR ("cannot decode perl-object (package does not have a THAW method)");
		991
		992	dSP;
		993
		994	ENTER; SAVETMPS; PUSHMARK (SP);
		995	EXTEND (SP, len + 1);
		996	// we re-bless the reference to get overload and other niceties right
		997	PUSHs (*av_fetch (av, 0, 1));
		998	PUSHs (sv_cbor);
		999
		1000	int i;
		1001
		1002	for (i = 1; i < len; ++i)
		1003	PUSHs (*av_fetch (av, i, 1));
		1004
		1005	PUTBACK;
		1006	call_sv ((SV *)GvCV (method), G_SCALAR \| G_EVAL);
		1007	SPAGAIN;
		1008
		1009	if (SvTRUE (ERRSV))
		1010	{
		1011	FREETMPS; LEAVE;
		1012	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1013	}
		1014
		1015	SvREFCNT_dec (sv);
		1016	sv = SvREFCNT_inc (POPs);
		1017
		1018	PUTBACK;
		1019
		1020	FREETMPS; LEAVE;
653		1021	}
654	// TODO	1022	break;
655	}
656		1023
		1024	default:
		1025	{
		1026	sv = decode_sv (dec);
		1027
		1028	dSP;
		1029	ENTER; SAVETMPS; PUSHMARK (SP);
		1030	EXTEND (SP, 2);
		1031	PUSHs (newSVuv (tag));
		1032	PUSHs (sv);
		1033
		1034	PUTBACK;
		1035	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY \| G_EVAL);
		1036	SPAGAIN;
		1037
		1038	if (SvTRUE (ERRSV))
		1039	{
		1040	FREETMPS; LEAVE;
		1041	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1042	}
		1043
		1044	if (count)
		1045	{
		1046	SvREFCNT_dec (sv);
		1047	sv = SvREFCNT_inc (POPs);
		1048	}
		1049	else
		1050	{
657	AV *av = newAV ();	1051	AV *av = newAV ();
658	av_push (av, newSVuv (tag));	1052	av_push (av, newSVuv (tag));
659	av_push (av, sv);	1053	av_push (av, sv);
660		1054
661	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash	1055	HV *tagged_stash = !CBOR_SLOW \|\| cbor_tagged_stash
662	? cbor_tagged_stash	1056	? cbor_tagged_stash
663	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1057	: gv_stashpv ("CBOR::XS::Tagged" , 1);
664
665	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1058	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1059	}
		1060
		1061	PUTBACK;
		1062
		1063	FREETMPS; LEAVE;
		1064	}
		1065	break;
		1066	}
		1067
		1068	return sv;
666		1069
667	fail:	1070	fail:
668	SvREFCNT_dec (sv);	1071	SvREFCNT_dec (sv);
669	return &PL_sv_undef;	1072	return &PL_sv_undef;
670	}	1073	}
…		…
672	static SV *	1075	static SV *
673	decode_sv (dec_t *dec)	1076	decode_sv (dec_t *dec)
674	{	1077	{
675	WANT (1);	1078	WANT (1);
676		1079
677	switch (*dec->cur >> 5)	1080	switch (*dec->cur >> MAJOR_SHIFT)
678	{	1081	{
679	case 0: // unsigned int	1082	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
680	return newSVuv (decode_uint (dec));	1083	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
681	case 1: // negative int	1084	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
682	return newSViv (-1 - (IV)decode_uint (dec));	1085	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
683	case 2: // octet string	1086	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
684	return decode_str (dec, 0);	1087	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
685	case 3: // utf-8 string	1088	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
686	return decode_str (dec, 1);	1089
687	case 4: // array	1090	case MAJOR_MISC >> MAJOR_SHIFT:
688	return decode_av (dec);
689	case 5: // map
690	return decode_hv (dec);
691	case 6: // tag
692	return decode_tagged (dec);
693	case 7: // misc
694	switch (*dec->cur++ & 31)	1091	switch (*dec->cur++ & MINOR_MASK)
695	{	1092	{
696	case 20:	1093	case SIMPLE_FALSE:
697	#if CBOR_SLOW	1094	#if CBOR_SLOW
698	cbor_false = get_bool ("CBOR::XS::false");	1095	types_false = get_bool ("Types::Serialiser::false");
699	#endif	1096	#endif
700	return newSVsv (cbor_false);	1097	return newSVsv (types_false);
701	case 21:	1098	case SIMPLE_TRUE:
702	#if CBOR_SLOW	1099	#if CBOR_SLOW
703	cbor_true = get_bool ("CBOR::XS::true");	1100	types_true = get_bool ("Types::Serialiser::true");
704	#endif	1101	#endif
705	return newSVsv (cbor_true);	1102	return newSVsv (types_true);
706	case 22:	1103	case SIMPLE_NULL:
707	return newSVsv (&PL_sv_undef);	1104	return newSVsv (&PL_sv_undef);
		1105	case SIMPLE_UNDEF:
		1106	#if CBOR_SLOW
		1107	types_error = get_bool ("Types::Serialiser::error");
		1108	#endif
		1109	return newSVsv (types_error);
708		1110
709	case 25:	1111	case MISC_FLOAT16:
710	{	1112	{
711	WANT (2);	1113	WANT (2);
712		1114
713	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];	1115	uint16_t fp = (dec->cur[0] << 8) \| dec->cur[1];
714	dec->cur += 2;	1116	dec->cur += 2;
715		1117
716	return newSVnv (ecb_binary16_to_float (fp));	1118	return newSVnv (ecb_binary16_to_float (fp));
717	}	1119	}
718		1120
719	case 26:	1121	case MISC_FLOAT32:
720	{	1122	{
721	uint32_t fp;	1123	uint32_t fp;
722	WANT (4);	1124	WANT (4);
723	memcpy (&fp, dec->cur, 4);	1125	memcpy (&fp, dec->cur, 4);
724	dec->cur += 4;	1126	dec->cur += 4;
…		…
727	fp = ecb_bswap32 (fp);	1129	fp = ecb_bswap32 (fp);
728		1130
729	return newSVnv (ecb_binary32_to_float (fp));	1131	return newSVnv (ecb_binary32_to_float (fp));
730	}	1132	}
731		1133
732	case 27:	1134	case MISC_FLOAT64:
733	{	1135	{
734	uint64_t fp;	1136	uint64_t fp;
735	WANT (8);	1137	WANT (8);
736	memcpy (&fp, dec->cur, 8);	1138	memcpy (&fp, dec->cur, 8);
737	dec->cur += 8;	1139	dec->cur += 8;
…		…
740	fp = ecb_bswap64 (fp);	1142	fp = ecb_bswap64 (fp);
741		1143
742	return newSVnv (ecb_binary64_to_double (fp));	1144	return newSVnv (ecb_binary64_to_double (fp));
743	}	1145	}
744		1146
745	// 0..19 unassigned	1147	// 0..19 unassigned simple
746	// 24 reserved + unassigned (reserved values are not encodable)	1148	// 24 reserved + unassigned simple (reserved values are not encodable)
		1149	// 28-30 unassigned misc
		1150	// 31 break code
747	default:	1151	default:
748	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1152	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
749	}	1153	}
750		1154
751	break;	1155	break;
752	}	1156	}
753		1157
…		…
756	}	1160	}
757		1161
758	static SV *	1162	static SV *
759	decode_cbor (SV string, CBOR cbor, char **offset_return)	1163	decode_cbor (SV string, CBOR cbor, char **offset_return)
760	{	1164	{
761	dec_t dec;	1165	dec_t dec = { };
762	SV *sv;	1166	SV *sv;
		1167	STRLEN len;
		1168	char *data = SvPVbyte (string, len);
763		1169
764	/* work around bugs in 5.10 where manipulating magic values
765	* makes perl ignore the magic in subsequent accesses.
766	* also make a copy of non-PV values, to get them into a clean
767	* state (SvPV should do that, but it's buggy, see below).
768	*/
769	/SvGETMAGIC (string);/
770	if (SvMAGICAL (string) \|\| !SvPOK (string))
771	string = sv_2mortal (newSVsv (string));
772
773	SvUPGRADE (string, SVt_PV);
774
775	/* work around a bug in perl 5.10, which causes SvCUR to fail an
776	* assertion with -DDEBUGGING, although SvCUR is documented to
777	* return the xpv_cur field which certainly exists after upgrading.
778	* according to nicholas clark, calling SvPOK fixes this.
779	* But it doesn't fix it, so try another workaround, call SvPV_nolen
780	* and hope for the best.
781	* Damnit, SvPV_nolen still trips over yet another assertion. This
782	* assertion business is seriously broken, try yet another workaround
783	* for the broken -DDEBUGGING.
784	*/
785	{
786	#ifdef DEBUGGING
787	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
788	#else
789	STRLEN offset = SvCUR (string);
790	#endif
791
792	if (offset > cbor->max_size && cbor->max_size)	1170	if (len > cbor->max_size && cbor->max_size)
793	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1171	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
794	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1172	(unsigned long)len, (unsigned long)cbor->max_size);
795	}
796
797	sv_utf8_downgrade (string, 0);
798		1173
799	dec.cbor = *cbor;	1174	dec.cbor = *cbor;
800	dec.cur = (U8 *)SvPVX (string);	1175	dec.cur = (U8 *)data;
801	dec.end = (U8 *)SvEND (string);	1176	dec.end = (U8 *)data + len;
802	dec.err = 0;
803	dec.depth = 0;
804		1177
805	sv = decode_sv (&dec);	1178	sv = decode_sv (&dec);
806		1179
807	if (offset_return)	1180	if (offset_return)
808	*offset_return = dec.cur;	1181	*offset_return = dec.cur;
…		…
811	if (dec.cur != dec.end && !dec.err)	1184	if (dec.cur != dec.end && !dec.err)
812	dec.err = "garbage after CBOR object";	1185	dec.err = "garbage after CBOR object";
813		1186
814	if (dec.err)	1187	if (dec.err)
815	{	1188	{
		1189	if (dec.shareable)
		1190	{
		1191	// need to break cyclic links, which whould all be in shareable
		1192	int i;
		1193	SV **svp;
		1194
		1195	for (i = av_len (dec.shareable) + 1; i--; )
		1196	if ((svp = av_fetch (dec.shareable, i, 0)))
		1197	sv_setsv (*svp, &PL_sv_undef);
		1198	}
		1199
816	SvREFCNT_dec (sv);	1200	SvREFCNT_dec (sv);
817	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )SvPVX (string), (int)(uint8_t)dec.cur);	1201	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 )data, (int)(uint8_t)dec.cur);
818	}	1202	}
819		1203
820	sv = sv_2mortal (sv);	1204	sv = sv_2mortal (sv);
821		1205
822	return sv;	1206	return sv;
823	}	1207	}
824		1208
		1209	/////////////////////////////////////////////////////////////////////////////
		1210	// incremental parser
		1211
		1212	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1213
		1214	// returns 0 for notyet, 1 for success or error
		1215	static int
		1216	incr_parse (CBOR self, SV cborstr)
		1217	{
		1218	STRLEN cur;
		1219	SvPV (cborstr, cur);
		1220
		1221	while (ecb_expect_true (self->incr_need <= cur))
		1222	{
		1223	// table of integer count bytes
		1224	static I8 incr_len[MINOR_MASK + 1] = {
		1225	0, 0, 0, 0, 0, 0, 0, 0,
		1226	0, 0, 0, 0, 0, 0, 0, 0,
		1227	0, 0, 0, 0, 0, 0, 0, 0,
		1228	1, 2, 4, 8,-1,-1,-1,-2
		1229	};
		1230
		1231	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1232	U8 m = *p & MINOR_MASK;
		1233	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1234	I8 ilen = incr_len[m];
		1235
		1236	self->incr_need = self->incr_pos + 1;
		1237
		1238	if (ecb_expect_false (ilen < 0))
		1239	{
		1240	if (m != MINOR_INDEF)
		1241	return 1; // error
		1242
		1243	if (*p == (MAJOR_MISC \| MINOR_INDEF))
		1244	{
		1245	if (count >= 0)
		1246	return 1; // error
		1247
		1248	count = 1;
		1249	}
		1250	else
		1251	{
		1252	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1253	count = -1;
		1254	}
		1255	}
		1256	else
		1257	{
		1258	self->incr_need += ilen;
		1259	if (ecb_expect_false (self->incr_need > cur))
		1260	return 0;
		1261
		1262	int major = *p >> MAJOR_SHIFT;
		1263
		1264	switch (major)
		1265	{
		1266	case MAJOR_BYTES >> MAJOR_SHIFT:
		1267	case MAJOR_TEXT >> MAJOR_SHIFT:
		1268	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1269	case MAJOR_MAP >> MAJOR_SHIFT:
		1270	{
		1271	UV len;
		1272
		1273	if (ecb_expect_false (ilen))
		1274	{
		1275	len = 0;
		1276
		1277	do {
		1278	len = (len << 8) \| *++p;
		1279	} while (--ilen);
		1280	}
		1281	else
		1282	len = m;
		1283
		1284	switch (major)
		1285	{
		1286	case MAJOR_BYTES >> MAJOR_SHIFT:
		1287	case MAJOR_TEXT >> MAJOR_SHIFT:
		1288	self->incr_need += len;
		1289	if (ecb_expect_false (self->incr_need > cur))
		1290	return 0;
		1291
		1292	break;
		1293
		1294	case MAJOR_MAP >> MAJOR_SHIFT:
		1295	len <<= 1;
		1296	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1297	if (len)
		1298	{
		1299	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1300	count = len + 1;
		1301	}
		1302	break;
		1303	}
		1304	}
		1305	}
		1306	}
		1307
		1308	self->incr_pos = self->incr_need;
		1309
		1310	if (count > 0)
		1311	{
		1312	while (!--count)
		1313	{
		1314	if (!AvFILLp (self->incr_count))
		1315	return 1; // done
		1316
		1317	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1318	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1319	}
		1320
		1321	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1322	}
		1323	}
		1324
		1325	return 0;
		1326	}
		1327
		1328
825	/////////////////////////////////////////////////////////////////////////////	1329	/////////////////////////////////////////////////////////////////////////////
826	// XS interface functions	1330	// XS interface functions
827		1331
828	MODULE = CBOR::XS PACKAGE = CBOR::XS	1332	MODULE = CBOR::XS PACKAGE = CBOR::XS
829		1333
830	BOOT:	1334	BOOT:
831	{	1335	{
832	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1336	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
833	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
834	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1337	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
835		1338
836	cbor_true = get_bool ("CBOR::XS::true");	1339	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
837	cbor_false = get_bool ("CBOR::XS::false");	1340	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1341
		1342	types_true = get_bool ("Types::Serialiser::true" );
		1343	types_false = get_bool ("Types::Serialiser::false");
		1344	types_error = get_bool ("Types::Serialiser::error");
		1345
		1346	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1347
		1348	sv_cbor = newSVpv ("CBOR", 0);
		1349	SvREADONLY_on (sv_cbor);
838	}	1350	}
839		1351
840	PROTOTYPES: DISABLE	1352	PROTOTYPES: DISABLE
841		1353
842	void CLONE (...)	1354	void CLONE (...)
843	CODE:	1355	CODE:
844	cbor_stash = 0;	1356	cbor_stash = 0;
845	cbor_boolean_stash = 0;
846	cbor_tagged_stash = 0;	1357	cbor_tagged_stash = 0;
		1358	types_error_stash = 0;
		1359	types_boolean_stash = 0;
847		1360
848	void new (char *klass)	1361	void new (char *klass)
849	PPCODE:	1362	PPCODE:
850	{	1363	{
851	SV *pv = NEWSV (0, sizeof (CBOR));	1364	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
859		1372
860	void shrink (CBOR *self, int enable = 1)	1373	void shrink (CBOR *self, int enable = 1)
861	ALIAS:	1374	ALIAS:
862	shrink = F_SHRINK	1375	shrink = F_SHRINK
863	allow_unknown = F_ALLOW_UNKNOWN	1376	allow_unknown = F_ALLOW_UNKNOWN
		1377	allow_sharing = F_ALLOW_SHARING
		1378	allow_cycles = F_ALLOW_CYCLES
		1379	pack_strings = F_PACK_STRINGS
		1380	validate_utf8 = F_VALIDATE_UTF8
864	PPCODE:	1381	PPCODE:
865	{	1382	{
866	if (enable)	1383	if (enable)
867	self->flags \|= ix;	1384	self->flags \|= ix;
868	else	1385	else
…		…
873		1390
874	void get_shrink (CBOR *self)	1391	void get_shrink (CBOR *self)
875	ALIAS:	1392	ALIAS:
876	get_shrink = F_SHRINK	1393	get_shrink = F_SHRINK
877	get_allow_unknown = F_ALLOW_UNKNOWN	1394	get_allow_unknown = F_ALLOW_UNKNOWN
		1395	get_allow_sharing = F_ALLOW_SHARING
		1396	get_allow_cycles = F_ALLOW_CYCLES
		1397	get_pack_strings = F_PACK_STRINGS
		1398	get_validate_utf8 = F_VALIDATE_UTF8
878	PPCODE:	1399	PPCODE:
879	XPUSHs (boolSV (self->flags & ix));	1400	XPUSHs (boolSV (self->flags & ix));
880		1401
881	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1402	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
882	PPCODE:	1403	PPCODE:
…		…
898	CODE:	1419	CODE:
899	RETVAL = self->max_size;	1420	RETVAL = self->max_size;
900	OUTPUT:	1421	OUTPUT:
901	RETVAL	1422	RETVAL
902		1423
903	#if 0 //TODO	1424	void filter (CBOR self, SV filter = 0)
904
905	void filter_cbor_object (CBOR self, SV cb = &PL_sv_undef)
906	PPCODE:	1425	PPCODE:
907	{
908	SvREFCNT_dec (self->cb_object);	1426	SvREFCNT_dec (self->filter);
909	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1427	self->filter = filter ? newSVsv (filter) : filter;
910
911	XPUSHs (ST (0));	1428	XPUSHs (ST (0));
912	}
913		1429
914	void filter_cbor_single_key_object (CBOR self, SV key, SV *cb = &PL_sv_undef)	1430	SV get_filter (CBOR self)
915	PPCODE:	1431	CODE:
916	{	1432	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
917	if (!self->cb_sk_object)	1433	OUTPUT:
918	self->cb_sk_object = newHV ();	1434	RETVAL
919
920	if (SvOK (cb))
921	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
922	else
923	{
924	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
925
926	if (!HvKEYS (self->cb_sk_object))
927	{
928	SvREFCNT_dec (self->cb_sk_object);
929	self->cb_sk_object = 0;
930	}
931	}
932
933	XPUSHs (ST (0));
934	}
935
936	#endif
937		1435
938	void encode (CBOR self, SV scalar)	1436	void encode (CBOR self, SV scalar)
939	PPCODE:	1437	PPCODE:
940	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1438	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
941	XPUSHs (scalar);	1439	XPUSHs (scalar);
…		…
954	EXTEND (SP, 2);	1452	EXTEND (SP, 2);
955	PUSHs (sv);	1453	PUSHs (sv);
956	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1454	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
957	}	1455	}
958		1456
959	#if 0	1457	void incr_parse (CBOR self, SV cborstr)
		1458	ALIAS:
		1459	incr_parse_multiple = 1
		1460	PPCODE:
		1461	{
		1462	if (SvUTF8 (cborstr))
		1463	sv_utf8_downgrade (cborstr, 0);
		1464
		1465	if (!self->incr_count)
		1466	{
		1467	self->incr_count = newAV ();
		1468	self->incr_pos = 0;
		1469	self->incr_need = 1;
		1470
		1471	av_push (self->incr_count, newSViv (1));
		1472	}
		1473
		1474	do
		1475	{
		1476	if (!incr_parse (self, cborstr))
		1477	{
		1478	if (self->incr_need > self->max_size && self->max_size)
		1479	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1480	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1481
		1482	break;
		1483	}
		1484
		1485	SV *sv;
		1486	char *offset;
		1487
		1488	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1489	XPUSHs (sv);
		1490
		1491	sv_chop (cborstr, offset);
		1492
		1493	av_clear (self->incr_count);
		1494	av_push (self->incr_count, newSViv (1));
		1495
		1496	self->incr_pos = 0;
		1497	self->incr_need = self->incr_pos + 1;
		1498	}
		1499	while (ix);
		1500	}
		1501
		1502	void incr_reset (CBOR *self)
		1503	CODE:
		1504	{
		1505	SvREFCNT_dec (self->incr_count);
		1506	self->incr_count = 0;
		1507	}
960		1508
961	void DESTROY (CBOR *self)	1509	void DESTROY (CBOR *self)
962	CODE:	1510	PPCODE:
963	SvREFCNT_dec (self->cb_sk_object);	1511	cbor_free (self);
964	SvREFCNT_dec (self->cb_object);
965
966	#endif
967		1512
968	PROTOTYPES: ENABLE	1513	PROTOTYPES: ENABLE
969		1514
970	void encode_cbor (SV *scalar)	1515	void encode_cbor (SV *scalar)
		1516	ALIAS:
		1517	encode_cbor = 0
		1518	encode_cbor_sharing = F_ALLOW_SHARING
971	PPCODE:	1519	PPCODE:
972	{	1520	{
973	CBOR cbor;	1521	CBOR cbor;
974	cbor_init (&cbor);	1522	cbor_init (&cbor);
		1523	cbor.flags \|= ix;
975	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1524	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
976	XPUSHs (scalar);	1525	XPUSHs (scalar);
977	}	1526	}
978		1527
979	void decode_cbor (SV *cborstr)	1528	void decode_cbor (SV *cborstr)

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Comparing CBOR-XS/XS.xs (file contents): Revision 1.9 by root, Sun Oct 27 10:17:12 2013 UTC vs. Revision 1.45 by root, Sun Dec 14 05:48:39 2014 UTC

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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.9 by root, Sun Oct 27 10:17:12 2013 UTC vs.
Revision 1.45 by root, Sun Dec 14 05:48:39 2014 UTC