ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/CBOR-XS/XS.xs

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.6 by root, Sat Oct 26 22:25:47 2013 UTC vs.
Revision 1.53 by root, Sun Apr 24 19:51:41 2016 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
		15	// compatibility with perl <5.18
		16	#ifndef HvNAMELEN_get
		17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		18	#endif
		19	#ifndef HvNAMELEN
		20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		21	#endif
		22	#ifndef HvNAMEUTF8
		23	# define HvNAMEUTF8(hv) 0
		24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
		65
		66	// known tags
		67	enum cbor_tag
		68	{
		69	// extensions
		70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		77
		78	// rfc7049
		79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		81	CBOR_TAG_POS_BIGNUM = 2, // byte string
		82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		84	CBOR_TAG_BIGFLOAT = 5, // array
		85
		86	CBOR_TAG_CONV_B64U = 21, // base64url, any
		87	CBOR_TAG_CONV_B64 = 22, // base64, any
		88	CBOR_TAG_CONV_HEX = 23, // base16, any
		89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		90
		91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		96
		97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		98	};
		99
14	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
15	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_UTF8_STRINGS 0x00000020UL
		106	#define F_UTF8_KEYS 0x00000040UL
		107	#define F_VALIDATE_UTF8 0x00000080UL
16		108
17	#define INIT_SIZE 32 // initial scalar size to be allocated	109	#define INIT_SIZE 32 // initial scalar size to be allocated
18		110
19	#define SB do {	111	#define SB do {
20	#define SE } while (0)	112	#define SE } while (0)
…		…
31	#else	123	#else
32	# define CBOR_SLOW 0	124	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	125	# define CBOR_STASH cbor_stash
34	#endif	126	#endif
35		127
36	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	128	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	129	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		130
39	typedef struct {	131	typedef struct {
40	U32 flags;	132	U32 flags;
41	U32 max_depth;	133	U32 max_depth;
42	STRLEN max_size;	134	STRLEN max_size;
		135	SV *filter;
		136
		137	// for the incremental parser
		138	STRLEN incr_pos; // the current offset into the text
		139	STRLEN incr_need; // minimum bytes needed to decode
		140	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
43	} CBOR;	141	} CBOR;
44		142
45	ecb_inline void	143	ecb_inline void
46	cbor_init (CBOR *cbor)	144	cbor_init (CBOR *cbor)
47	{	145	{
48	Zero (cbor, 1, CBOR);	146	Zero (cbor, 1, CBOR);
49	cbor->max_depth = 512;	147	cbor->max_depth = 512;
		148	}
		149
		150	ecb_inline void
		151	cbor_free (CBOR *cbor)
		152	{
		153	SvREFCNT_dec (cbor->filter);
		154	SvREFCNT_dec (cbor->incr_count);
50	}	155	}
51		156
52	/////////////////////////////////////////////////////////////////////////////	157	/////////////////////////////////////////////////////////////////////////////
53	// utility functions	158	// utility functions
54		159
…		…
76	SvPV_renew (sv, SvCUR (sv) + 1);	181	SvPV_renew (sv, SvCUR (sv) + 1);
77	#endif	182	#endif
78	}	183	}
79	}	184	}
80		185
81	/////////////////////////////////////////////////////////////////////////////	186	// minimum length of a string to be registered for stringref
82	// fp hell	187	ecb_inline int
83		188	minimum_string_length (UV idx)
84	//TODO	189	{
		190	return idx > 23
		191	? idx > 0xffU
		192	? idx > 0xffffU
		193	? idx > 0xffffffffU
		194	? 11
		195	: 7
		196	: 5
		197	: 4
		198	: 3;
		199	}
85		200
86	/////////////////////////////////////////////////////////////////////////////	201	/////////////////////////////////////////////////////////////////////////////
87	// encoder	202	// encoder
88		203
89	// structure used for encoding CBOR	204	// structure used for encoding CBOR
…		…
92	char *cur; // SvPVX (sv) + current output position	207	char *cur; // SvPVX (sv) + current output position
93	char *end; // SvEND (sv)	208	char *end; // SvEND (sv)
94	SV *sv; // result scalar	209	SV *sv; // result scalar
95	CBOR cbor;	210	CBOR cbor;
96	U32 depth; // recursion level	211	U32 depth; // recursion level
		212	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		213	UV stringref_idx;
		214	HV *shareable; // ptr => index, or 0
		215	UV shareable_idx;
97	} enc_t;	216	} enc_t;
98		217
99	ecb_inline void	218	ecb_inline void
100	need (enc_t *enc, STRLEN len)	219	need (enc_t *enc, STRLEN len)
101	{	220	{
…		…
118	static void	237	static void
119	encode_uint (enc_t *enc, int major, UV len)	238	encode_uint (enc_t *enc, int major, UV len)
120	{	239	{
121	need (enc, 9);	240	need (enc, 9);
122		241
123	if (len < 24)	242	if (ecb_expect_true (len < LENGTH_EXT1))
124	*enc->cur++ = major | len;	243	*enc->cur++ = major | len;
125	else if (len <= 0xff)	244	else if (ecb_expect_true (len <= 0xffU))
126	{	245	{
127	*enc->cur++ = major | 24;	246	*enc->cur++ = major | LENGTH_EXT1;
128	*enc->cur++ = len;	247	*enc->cur++ = len;
129	}	248	}
130	else if (len <= 0xffff)	249	else if (len <= 0xffffU)
131	{	250	{
132	*enc->cur++ = major | 25;	251	*enc->cur++ = major | LENGTH_EXT2;
133	*enc->cur++ = len >> 8;	252	*enc->cur++ = len >> 8;
134	*enc->cur++ = len;	253	*enc->cur++ = len;
135	}	254	}
136	else if (len <= 0xffffffff)	255	else if (len <= 0xffffffffU)
137	{	256	{
138	*enc->cur++ = major | 26;	257	*enc->cur++ = major | LENGTH_EXT4;
139	*enc->cur++ = len >> 24;	258	*enc->cur++ = len >> 24;
140	*enc->cur++ = len >> 16;	259	*enc->cur++ = len >> 16;
141	*enc->cur++ = len >> 8;	260	*enc->cur++ = len >> 8;
142	*enc->cur++ = len;	261	*enc->cur++ = len;
143	}	262	}
144	else	263	else
145	{	264	{
146	*enc->cur++ = major | 27;	265	*enc->cur++ = major | LENGTH_EXT8;
147	*enc->cur++ = len >> 56;	266	*enc->cur++ = len >> 56;
148	*enc->cur++ = len >> 48;	267	*enc->cur++ = len >> 48;
149	*enc->cur++ = len >> 40;	268	*enc->cur++ = len >> 40;
150	*enc->cur++ = len >> 32;	269	*enc->cur++ = len >> 32;
151	*enc->cur++ = len >> 24;	270	*enc->cur++ = len >> 24;
…		…
153	*enc->cur++ = len >> 8;	272	*enc->cur++ = len >> 8;
154	*enc->cur++ = len;	273	*enc->cur++ = len;
155	}	274	}
156	}	275	}
157		276
158	static void	277	ecb_inline void
		278	encode_tag (enc_t *enc, UV tag)
		279	{
		280	encode_uint (enc, MAJOR_TAG, tag);
		281	}
		282
		283	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		284	ecb_noinline static void
159	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	285	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
160	{	286	{
161	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	287	STRLEN ulen = len;
		288	U8 *p, *pend = (U8 *)str + len;
		289
		290	for (p = (U8 *)str; p < pend; ++p)
		291	ulen += *p >> 7; // count set high bits
		292
		293	encode_uint (enc, MAJOR_TEXT, ulen);
		294
		295	need (enc, ulen);
		296	for (p = (U8 *)str; p < pend; ++p)
		297	if (*p < 0x80)
		298	*enc->cur++ = *p;
		299	else
		300	{
		301	*enc->cur++ = 0xc0 + (*p >> 6);
		302	*enc->cur++ = 0x80 + (*p & 63);
		303	}
		304	}
		305
		306	ecb_inline void
		307	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		308	{
		309	if (ecb_expect_false (upgrade_utf8))
		310	if (!utf8)
		311	{
		312	encode_str_utf8 (enc, utf8, str, len);
		313	return;
		314	}
		315
		316	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
162	need (enc, len);	317	need (enc, len);
163	memcpy (enc->cur, str, len);	318	memcpy (enc->cur, str, len);
164	enc->cur += len;	319	enc->cur += len;
165	}	320	}
166		321
		322	ecb_inline
		323	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		324	{
		325	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		326	{
		327	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		328
		329	if (SvOK (*svp))
		330	{
		331	// already registered, use stringref
		332	encode_tag (enc, CBOR_TAG_STRINGREF);
		333	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		334	return;
		335	}
		336	else if (len >= minimum_string_length (enc->stringref_idx))
		337	{
		338	// register only
		339	sv_setuv (*svp, enc->stringref_idx);
		340	++enc->stringref_idx;
		341	}
		342	}
		343
		344	encode_str (enc, upgrade_utf8, utf8, str, len);
		345	}
		346
167	static void encode_sv (enc_t *enc, SV *sv);	347	static void encode_sv (enc_t *enc, SV *sv);
168		348
169	static void	349	static void
170	encode_av (enc_t *enc, AV *av)	350	encode_av (enc_t *enc, AV *av)
171	{	351	{
…		…
174	if (enc->depth >= enc->cbor.max_depth)	354	if (enc->depth >= enc->cbor.max_depth)
175	croak (ERR_NESTING_EXCEEDED);	355	croak (ERR_NESTING_EXCEEDED);
176		356
177	++enc->depth;	357	++enc->depth;
178		358
179	encode_uint (enc, 0x80, len + 1);	359	encode_uint (enc, MAJOR_ARRAY, len + 1);
180		360
		361	if (SvMAGICAL (av))
181	for (i = 0; i <= len; ++i)	362	for (i = 0; i <= len; ++i)
182	{	363	{
183	SV **svp = av_fetch (av, i, 0);	364	SV **svp = av_fetch (av, i, 0);
184	encode_sv (enc, svp ? *svp : &PL_sv_undef);	365	encode_sv (enc, svp ? *svp : &PL_sv_undef);
185	}	366	}
		367	else
		368	for (i = 0; i <= len; ++i)
		369	{
		370	SV *sv = AvARRAY (av)[i];
		371	encode_sv (enc, sv ? sv : &PL_sv_undef);
		372	}
186		373
187	--enc->depth;	374	--enc->depth;
188	}	375	}
189		376
190	static void	377	static void
…		…
199		386
200	int pairs = hv_iterinit (hv);	387	int pairs = hv_iterinit (hv);
201	int mg = SvMAGICAL (hv);	388	int mg = SvMAGICAL (hv);
202		389
203	if (mg)	390	if (mg)
204	encode_ch (enc, 0xa0 | 31);	391	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
205	else	392	else
206	encode_uint (enc, 0xa0, pairs);	393	encode_uint (enc, MAJOR_MAP, pairs);
207		394
208	while ((he = hv_iternext (hv)))	395	while ((he = hv_iternext (hv)))
209	{	396	{
210	if (HeKLEN (he) == HEf_SVKEY)	397	if (HeKLEN (he) == HEf_SVKEY)
211	encode_sv (enc, HeSVKEY (he));	398	encode_sv (enc, HeSVKEY (he));
212	else	399	else
213	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	400	encode_strref (enc, enc->cbor.flags & (F_UTF8_KEYS | F_UTF8_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
214		401
215	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	402	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
216	}	403	}
217		404
218	if (mg)	405	if (mg)
219	encode_ch (enc, 0xe0 | 31);	406	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
220		407
221	--enc->depth;	408	--enc->depth;
222	}	409	}
223		410
224	// encode objects, arrays and special \0=false and \1=true values.	411	// encode objects, arrays and special \0=false and \1=true values.
225	static void	412	static void
226	encode_rv (enc_t *enc, SV *sv)	413	encode_rv (enc_t *enc, SV *sv)
227	{	414	{
228	svtype svt;
229
230	SvGETMAGIC (sv);	415	SvGETMAGIC (sv);
		416
231	svt = SvTYPE (sv);	417	svtype svt = SvTYPE (sv);
232		418
233	if (ecb_expect_false (SvOBJECT (sv)))	419	if (ecb_expect_false (SvOBJECT (sv)))
234	{	420	{
235	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	421	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
236	? cbor_boolean_stash	422	? types_boolean_stash
237	: gv_stashpv ("CBOR::XS::Boolean", 1);	423	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		424	HV *error_stash = !CBOR_SLOW || types_error_stash
		425	? types_error_stash
		426	: gv_stashpv ("Types::Serialiser::Error", 1);
238	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	427	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
239	? cbor_tagged_stash	428	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Tagged" , 1);	429	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		430
		431	HV *stash = SvSTASH (sv);
		432
242	if (SvSTASH (sv) == boolean_stash)	433	if (stash == boolean_stash)
243	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	434	{
		435	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		436	return;
		437	}
		438	else if (stash == error_stash)
		439	{
		440	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		441	return;
		442	}
244	else if (SvSTASH (sv) == tagged_stash)	443	else if (stash == tagged_stash)
245	{	444	{
246	if (svt != SVt_PVAV)	445	if (svt != SVt_PVAV)
247	croak ("encountered CBOR::XS::Tagged object that isn't an array");	446	croak ("encountered CBOR::XS::Tagged object that isn't an array");
248		447
249	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	448	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
250	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	449	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		450
		451	return;
		452	}
		453	}
		454
		455	if (ecb_expect_false (SvREFCNT (sv) > 1)
		456	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		457	{
		458	if (!enc->shareable)
		459	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		460
		461	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		462
		463	if (SvOK (*svp))
		464	{
		465	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		466	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		467	return;
251	}	468	}
252	else	469	else
253	{	470	{
		471	sv_setuv (*svp, enc->shareable_idx);
		472	++enc->shareable_idx;
		473	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		474	}
		475	}
		476
		477	if (ecb_expect_false (SvOBJECT (sv)))
		478	{
		479	HV *stash = SvSTASH (sv);
		480	GV *method;
		481
		482	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		483	{
		484	dSP;
		485
		486	ENTER; SAVETMPS;
		487	PUSHMARK (SP);
254	// we re-bless the reference to get overload and other niceties right	488	// we re-bless the reference to get overload and other niceties right
255	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
256
257	if (to_cbor)
258	{
259	dSP;
260
261	ENTER; SAVETMPS; PUSHMARK (SP);
262	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	489	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
263		490
264	// calling with G_SCALAR ensures that we always get a 1 return value
265	PUTBACK;	491	PUTBACK;
		492	// G_SCALAR ensures that return value is 1
266	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	493	call_sv ((SV *)GvCV (method), G_SCALAR);
267	SPAGAIN;	494	SPAGAIN;
268		495
269	// catch this surprisingly common error	496	// catch this surprisingly common error
270	if (SvROK (TOPs) && SvRV (TOPs) == sv)	497	if (SvROK (TOPs) && SvRV (TOPs) == sv)
271	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	498	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
272		499
273	sv = POPs;	500	encode_sv (enc, POPs);
		501
274	PUTBACK;	502	PUTBACK;
275		503
276	encode_sv (enc, sv);
277
278	FREETMPS; LEAVE;	504	FREETMPS; LEAVE;
279	}	505	}
		506	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		507	{
		508	dSP;
		509
		510	ENTER; SAVETMPS;
		511	SAVESTACK_POS ();
		512	PUSHMARK (SP);
		513	EXTEND (SP, 2);
		514	// we re-bless the reference to get overload and other niceties right
		515	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		516	PUSHs (sv_cbor);
		517
		518	PUTBACK;
		519	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		520	SPAGAIN;
		521
		522	// catch this surprisingly common error
		523	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		524	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		525
		526	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		527	encode_uint (enc, MAJOR_ARRAY, count + 1);
		528	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		529
		530	while (count)
		531	encode_sv (enc, SP[1 - count--]);
		532
		533	PUTBACK;
		534
		535	FREETMPS; LEAVE;
		536	}
280	else	537	else
281	croak ("encountered object '%s', but no TO_CBOR method available on it",	538	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
282	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	539	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
283	}
284	}	540	}
285	else if (svt == SVt_PVHV)	541	else if (svt == SVt_PVHV)
286	encode_hv (enc, (HV *)sv);	542	encode_hv (enc, (HV *)sv);
287	else if (svt == SVt_PVAV)	543	else if (svt == SVt_PVAV)
288	encode_av (enc, (AV *)sv);	544	encode_av (enc, (AV *)sv);
289	else if (svt < SVt_PVAV)
290	{
291	STRLEN len = 0;
292	char *pv = svt ? SvPV (sv, len) : 0;
293
294	if (len == 1 && *pv == '1')
295	encode_ch (enc, 0xe0 | 21);
296	else if (len == 1 && *pv == '0')
297	encode_ch (enc, 0xe0 | 20);
298	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
299	encode_ch (enc, 0xe0 | 23);
300	else
301	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
302	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
303	}
304	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
305	encode_ch (enc, 0xe0 | 23);
306	else	545	else
307	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	546	{
308	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	547	encode_tag (enc, CBOR_TAG_INDIRECTION);
		548	encode_sv (enc, sv);
		549	}
309	}	550	}
310		551
311	static void	552	static void
312	encode_nv (enc_t *enc, SV *sv)	553	encode_nv (enc_t *enc, SV *sv)
313	{	554	{
314	double nv = SvNVX (sv);	555	double nv = SvNVX (sv);
315		556
316	need (enc, 9);	557	need (enc, 9);
317		558
318	if (ecb_expect_false (nv == (U32)nv))	559	if (ecb_expect_false (nv == (NV)(U32)nv))
319	encode_uint (enc, 0x00, (U32)nv);	560	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
320	//TODO: maybe I32?	561	//TODO: maybe I32?
321	else if (ecb_expect_false (nv == (float)nv))	562	else if (ecb_expect_false (nv == (float)nv))
322	{	563	{
323	uint32_t fp = ecb_float_to_binary32 (nv);	564	uint32_t fp = ecb_float_to_binary32 (nv);
324		565
325	*enc->cur++ = 0xe0 | 26;	566	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
326		567
327	if (!ecb_big_endian ())	568	if (!ecb_big_endian ())
328	fp = ecb_bswap32 (fp);	569	fp = ecb_bswap32 (fp);
329		570
330	memcpy (enc->cur, &fp, 4);	571	memcpy (enc->cur, &fp, 4);
…		…
332	}	573	}
333	else	574	else
334	{	575	{
335	uint64_t fp = ecb_double_to_binary64 (nv);	576	uint64_t fp = ecb_double_to_binary64 (nv);
336		577
337	*enc->cur++ = 0xe0 | 27;	578	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
338		579
339	if (!ecb_big_endian ())	580	if (!ecb_big_endian ())
340	fp = ecb_bswap64 (fp);	581	fp = ecb_bswap64 (fp);
341		582
342	memcpy (enc->cur, &fp, 8);	583	memcpy (enc->cur, &fp, 8);
…		…
351		592
352	if (SvPOKp (sv))	593	if (SvPOKp (sv))
353	{	594	{
354	STRLEN len;	595	STRLEN len;
355	char *str = SvPV (sv, len);	596	char *str = SvPV (sv, len);
356	encode_str (enc, SvUTF8 (sv), str, len);	597	encode_strref (enc, enc->cbor.flags & F_UTF8_STRINGS, SvUTF8 (sv), str, len);
357	}	598	}
358	else if (SvNOKp (sv))	599	else if (SvNOKp (sv))
359	encode_nv (enc, sv);	600	encode_nv (enc, sv);
360	else if (SvIOKp (sv))	601	else if (SvIOKp (sv))
361	{	602	{
362	if (SvIsUV (sv))	603	if (SvIsUV (sv))
363	encode_uint (enc, 0x00, SvUVX (sv));	604	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
364	else if (SvIVX (sv) >= 0)	605	else if (SvIVX (sv) >= 0)
365	encode_uint (enc, 0x00, SvIVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
366	else	607	else
367	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	608	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
368	}	609	}
369	else if (SvROK (sv))	610	else if (SvROK (sv))
370	encode_rv (enc, SvRV (sv));	611	encode_rv (enc, SvRV (sv));
371	else if (!SvOK (sv))	612	else if (!SvOK (sv))
372	encode_ch (enc, 0xe0 | 22);	613	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
373	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	614	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
374	encode_ch (enc, 0xe0 | 23);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
375	else	616	else
376	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	617	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
377	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	618	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
378	}	619	}
379		620
380	static SV *	621	static SV *
381	encode_cbor (SV *scalar, CBOR *cbor)	622	encode_cbor (SV *scalar, CBOR *cbor)
382	{	623	{
383	enc_t enc;	624	enc_t enc = { 0 };
384		625
385	enc.cbor = *cbor;	626	enc.cbor = *cbor;
386	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	627	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
387	enc.cur = SvPVX (enc.sv);	628	enc.cur = SvPVX (enc.sv);
388	enc.end = SvEND (enc.sv);	629	enc.end = SvEND (enc.sv);
389	enc.depth = 0;
390		630
391	SvPOK_only (enc.sv);	631	SvPOK_only (enc.sv);
		632
		633	if (cbor->flags & F_PACK_STRINGS)
		634	{
		635	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		636	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		637	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		638	}
		639
392	encode_sv (&enc, scalar);	640	encode_sv (&enc, scalar);
393		641
394	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	642	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
395	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	643	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
396		644
…		…
410	U8 *end; // end of input string	658	U8 *end; // end of input string
411	const char *err; // parse error, if != 0	659	const char *err; // parse error, if != 0
412	CBOR cbor;	660	CBOR cbor;
413	U32 depth; // recursion depth	661	U32 depth; // recursion depth
414	U32 maxdepth; // recursion depth limit	662	U32 maxdepth; // recursion depth limit
		663	AV *shareable;
		664	AV *stringref;
		665	SV *decode_tagged;
415	} dec_t;	666	} dec_t;
416		667
417	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	668	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
418		669
419	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	670	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
…		…
422	#define DEC_DEC_DEPTH --dec->depth	673	#define DEC_DEC_DEPTH --dec->depth
423		674
424	static UV	675	static UV
425	decode_uint (dec_t *dec)	676	decode_uint (dec_t *dec)
426	{	677	{
427	switch (*dec->cur & 31)	678	U8 m = *dec->cur & MINOR_MASK;
428	{	679	++dec->cur;
429	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
430	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
431	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
432	return *dec->cur++ & 31;
433		680
434	case 24:	681	if (ecb_expect_true (m < LENGTH_EXT1))
		682	return m;
		683	else if (ecb_expect_true (m == LENGTH_EXT1))
		684	{
435	WANT (2);	685	WANT (1);
436	dec->cur += 2;	686	dec->cur += 1;
437	return dec->cur[-1];	687	return dec->cur[-1];
438		688	}
439	case 25:	689	else if (ecb_expect_true (m == LENGTH_EXT2))
		690	{
440	WANT (3);	691	WANT (2);
441	dec->cur += 3;	692	dec->cur += 2;
442	return (((UV)dec->cur[-2]) << 8)	693	return (((UV)dec->cur[-2]) << 8)
443	| ((UV)dec->cur[-1]);	694	| ((UV)dec->cur[-1]);
444		695	}
445	case 26:	696	else if (ecb_expect_true (m == LENGTH_EXT4))
		697	{
446	WANT (5);	698	WANT (4);
447	dec->cur += 5;	699	dec->cur += 4;
448	return (((UV)dec->cur[-4]) << 24)	700	return (((UV)dec->cur[-4]) << 24)
449	| (((UV)dec->cur[-3]) << 16)	701	| (((UV)dec->cur[-3]) << 16)
450	| (((UV)dec->cur[-2]) << 8)	702	| (((UV)dec->cur[-2]) << 8)
451	| ((UV)dec->cur[-1]);	703	| ((UV)dec->cur[-1]);
452		704	}
453	case 27:	705	else if (ecb_expect_true (m == LENGTH_EXT8))
		706	{
454	WANT (9);	707	WANT (8);
455	dec->cur += 9;	708	dec->cur += 8;
		709
		710	return
		711	#if UVSIZE < 8
		712	0
		713	#else
456	return (((UV)dec->cur[-8]) << 56)	714	(((UV)dec->cur[-8]) << 56)
457	| (((UV)dec->cur[-7]) << 48)	715	| (((UV)dec->cur[-7]) << 48)
458	| (((UV)dec->cur[-6]) << 40)	716	| (((UV)dec->cur[-6]) << 40)
459	| (((UV)dec->cur[-5]) << 32)	717	| (((UV)dec->cur[-5]) << 32)
		718	#endif
460	| (((UV)dec->cur[-4]) << 24)	719	| (((UV)dec->cur[-4]) << 24)
461	| (((UV)dec->cur[-3]) << 16)	720	| (((UV)dec->cur[-3]) << 16)
462	| (((UV)dec->cur[-2]) << 8)	721	| (((UV)dec->cur[-2]) << 8)
463	| ((UV)dec->cur[-1]);	722	| ((UV)dec->cur[-1]);
464		723	}
465	default:	724	else
466	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	725	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
467	}
468		726
469	fail:	727	fail:
470	return 0;	728	return 0;
471	}	729	}
472		730
…		…
477	{	735	{
478	AV *av = newAV ();	736	AV *av = newAV ();
479		737
480	DEC_INC_DEPTH;	738	DEC_INC_DEPTH;
481		739
482	if ((*dec->cur & 31) == 31)	740	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
483	{	741	{
484	++dec->cur;	742	++dec->cur;
485		743
486	for (;;)	744	for (;;)
487	{	745	{
488	WANT (1);	746	WANT (1);
489		747
490	if (*dec->cur == (0xe0 | 31))	748	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
491	{	749	{
492	++dec->cur;	750	++dec->cur;
493	break;	751	break;
494	}	752	}
495		753
…		…
498	}	756	}
499	else	757	else
500	{	758	{
501	int i, len = decode_uint (dec);	759	int i, len = decode_uint (dec);
502		760
		761	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
503	av_fill (av, len - 1);	762	av_fill (av, len - 1);
504		763
505	for (i = 0; i < len; ++i)	764	for (i = 0; i < len; ++i)
506	AvARRAY (av)[i] = decode_sv (dec);	765	AvARRAY (av)[i] = decode_sv (dec);
507	}	766	}
…		…
513	SvREFCNT_dec (av);	772	SvREFCNT_dec (av);
514	DEC_DEC_DEPTH;	773	DEC_DEC_DEPTH;
515	return &PL_sv_undef;	774	return &PL_sv_undef;
516	}	775	}
517		776
		777	static void
		778	decode_he (dec_t *dec, HV *hv)
		779	{
		780	// for speed reasons, we specialcase single-string
		781	// byte or utf-8 strings as keys, but only when !stringref
		782
		783	if (ecb_expect_true (!dec->stringref))
		784	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		785	{
		786	I32 len = decode_uint (dec);
		787	char *key = (char *)dec->cur;
		788
		789	WANT (len);
		790	dec->cur += len;
		791
		792	hv_store (hv, key, len, decode_sv (dec), 0);
		793
		794	return;
		795	}
		796	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		797	{
		798	I32 len = decode_uint (dec);
		799	char *key = (char *)dec->cur;
		800
		801	WANT (len);
		802	dec->cur += len;
		803
		804	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		805	if (!is_utf8_string (key, len))
		806	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		807
		808	hv_store (hv, key, -len, decode_sv (dec), 0);
		809
		810	return;
		811	}
		812
		813	SV *k = decode_sv (dec);
		814	SV *v = decode_sv (dec);
		815
		816	hv_store_ent (hv, k, v, 0);
		817	SvREFCNT_dec (k);
		818
		819	fail:
		820	;
		821	}
		822
518	static SV *	823	static SV *
519	decode_hv (dec_t *dec)	824	decode_hv (dec_t *dec)
520	{	825	{
521	HV *hv = newHV ();	826	HV *hv = newHV ();
522		827
523	DEC_INC_DEPTH;	828	DEC_INC_DEPTH;
524		829
525	if ((*dec->cur & 31) == 31)	830	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
526	{	831	{
527	++dec->cur;	832	++dec->cur;
528		833
529	for (;;)	834	for (;;)
530	{	835	{
531	WANT (1);	836	WANT (1);
532		837
533	if (*dec->cur == (0xe0 | 31))	838	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
534	{	839	{
535	++dec->cur;	840	++dec->cur;
536	break;	841	break;
537	}	842	}
538		843
539	SV *k = decode_sv (dec);	844	decode_he (dec, hv);
540	SV *v = decode_sv (dec);
541
542	hv_store_ent (hv, k, v, 0);
543	}	845	}
544	}	846	}
545	else	847	else
546	{	848	{
547	int len = decode_uint (dec);	849	int pairs = decode_uint (dec);
548		850
549	while (len--)	851	while (pairs--)
550	{	852	decode_he (dec, hv);
551	SV *k = decode_sv (dec);
552	SV *v = decode_sv (dec);
553
554	hv_store_ent (hv, k, v, 0);
555	}
556	}	853	}
557		854
558	DEC_DEC_DEPTH;	855	DEC_DEC_DEPTH;
559	return newRV_noinc ((SV *)hv);	856	return newRV_noinc ((SV *)hv);
560		857
…		…
567	static SV *	864	static SV *
568	decode_str (dec_t *dec, int utf8)	865	decode_str (dec_t *dec, int utf8)
569	{	866	{
570	SV *sv = 0;	867	SV *sv = 0;
571		868
572	if ((*dec->cur & 31) == 31)	869	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
573	{	870	{
		871	// indefinite length strings
574	++dec->cur;	872	++dec->cur;
575		873
		874	U8 major = *dec->cur & MAJOR_MISC;
		875
576	sv = newSVpvn ("", 0);	876	sv = newSVpvn ("", 0);
577		877
578	// not very fast, and certainly not robust against illegal input
579	for (;;)	878	for (;;)
580	{	879	{
581	WANT (1);	880	WANT (1);
582		881
583	if (*dec->cur == (0xe0 | 31))	882	if ((*dec->cur - major) > LENGTH_EXT8)
		883	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
584	{	884	{
585	++dec->cur;	885	++dec->cur;
586	break;	886	break;
587	}	887	}
		888	else
		889	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
588		890
589	sv_catsv (sv, decode_sv (dec));	891	STRLEN len = decode_uint (dec);
		892
		893	WANT (len);
		894	sv_catpvn (sv, dec->cur, len);
		895	dec->cur += len;
590	}	896	}
591	}	897	}
592	else	898	else
593	{	899	{
594	STRLEN len = decode_uint (dec);	900	STRLEN len = decode_uint (dec);
595		901
596	WANT (len);	902	WANT (len);
597	sv = newSVpvn (dec->cur, len);	903	sv = newSVpvn (dec->cur, len);
598	dec->cur += len;	904	dec->cur += len;
		905
		906	if (ecb_expect_false (dec->stringref)
		907	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		908	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
599	}	909	}
600		910
601	if (utf8)	911	if (utf8)
		912	{
		913	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		914	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		915	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		916
602	SvUTF8_on (sv);	917	SvUTF8_on (sv);
		918	}
603		919
604	return sv;	920	return sv;
605		921
606	fail:	922	fail:
607	SvREFCNT_dec (sv);	923	SvREFCNT_dec (sv);
…		…
609	}	925	}
610		926
611	static SV *	927	static SV *
612	decode_tagged (dec_t *dec)	928	decode_tagged (dec_t *dec)
613	{	929	{
		930	SV *sv = 0;
614	UV tag = decode_uint (dec);	931	UV tag = decode_uint (dec);
		932
		933	WANT (1);
		934
		935	switch (tag)
		936	{
		937	case CBOR_TAG_MAGIC:
615	SV *sv = decode_sv (dec);	938	sv = decode_sv (dec);
		939	break;
616		940
617	if (tag == 55799) // 2.4.5 Self-Describe CBOR	941	case CBOR_TAG_INDIRECTION:
		942	sv = newRV_noinc (decode_sv (dec));
		943	break;
		944
		945	case CBOR_TAG_STRINGREF_NAMESPACE:
		946	{
		947	ENTER; SAVETMPS;
		948
		949	SAVESPTR (dec->stringref);
		950	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		951
		952	sv = decode_sv (dec);
		953
		954	FREETMPS; LEAVE;
		955	}
		956	break;
		957
		958	case CBOR_TAG_STRINGREF:
		959	{
		960	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		961	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		962
		963	UV idx = decode_uint (dec);
		964
		965	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		966	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		967
		968	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		969	}
		970	break;
		971
		972	case CBOR_TAG_VALUE_SHAREABLE:
		973	{
		974	if (ecb_expect_false (!dec->shareable))
		975	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		976
		977	if (dec->cbor.flags & F_ALLOW_CYCLES)
		978	{
		979	sv = newSV (0);
		980	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		981
		982	SV *osv = decode_sv (dec);
		983	sv_setsv (sv, osv);
		984	SvREFCNT_dec_NN (osv);
		985	}
		986	else
		987	{
		988	av_push (dec->shareable, &PL_sv_undef);
		989	int idx = AvFILLp (dec->shareable);
		990	sv = decode_sv (dec);
		991	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		992	}
		993	}
		994	break;
		995
		996	case CBOR_TAG_VALUE_SHAREDREF:
		997	{
		998	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		999	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1000
		1001	UV idx = decode_uint (dec);
		1002
		1003	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1004	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1005
		1006	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1007
		1008	if (sv == &PL_sv_undef)
		1009	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1010	}
		1011	break;
		1012
		1013	case CBOR_TAG_PERL_OBJECT:
		1014	{
		1015	sv = decode_sv (dec);
		1016
		1017	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1018	ERR ("corrupted CBOR data (non-array perl object)");
		1019
		1020	AV *av = (AV *)SvRV (sv);
		1021	int len = av_len (av) + 1;
		1022	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1023
		1024	if (!stash)
		1025	ERR ("cannot decode perl-object (package does not exist)");
		1026
		1027	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1028
		1029	if (!method)
		1030	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1031
		1032	dSP;
		1033
		1034	ENTER; SAVETMPS;
		1035	PUSHMARK (SP);
		1036	EXTEND (SP, len + 1);
		1037	// we re-bless the reference to get overload and other niceties right
		1038	PUSHs (*av_fetch (av, 0, 1));
		1039	PUSHs (sv_cbor);
		1040
		1041	int i;
		1042
		1043	for (i = 1; i < len; ++i)
		1044	PUSHs (*av_fetch (av, i, 1));
		1045
		1046	PUTBACK;
		1047	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1048	SPAGAIN;
		1049
		1050	if (SvTRUE (ERRSV))
		1051	{
		1052	FREETMPS; LEAVE;
		1053	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1054	}
		1055
		1056	SvREFCNT_dec (sv);
		1057	sv = SvREFCNT_inc (POPs);
		1058
		1059	PUTBACK;
		1060
		1061	FREETMPS; LEAVE;
		1062	}
		1063	break;
		1064
		1065	default:
		1066	{
		1067	sv = decode_sv (dec);
		1068
		1069	dSP;
		1070	ENTER; SAVETMPS;
		1071	SAVESTACK_POS ();
		1072	PUSHMARK (SP);
		1073	EXTEND (SP, 2);
		1074	PUSHs (newSVuv (tag));
		1075	PUSHs (sv);
		1076
		1077	PUTBACK;
		1078	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1079	SPAGAIN;
		1080
		1081	if (SvTRUE (ERRSV))
		1082	{
		1083	FREETMPS; LEAVE;
		1084	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1085	}
		1086
		1087	if (count)
		1088	{
		1089	SvREFCNT_dec (sv);
		1090	sv = SvREFCNT_inc (POPs);
		1091	}
		1092	else
		1093	{
		1094	AV *av = newAV ();
		1095	av_push (av, newSVuv (tag));
		1096	av_push (av, sv);
		1097
		1098	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1099	? cbor_tagged_stash
		1100	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1101	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1102	}
		1103
		1104	PUTBACK;
		1105
		1106	FREETMPS; LEAVE;
		1107	}
		1108	break;
		1109	}
		1110
618	return sv;	1111	return sv;
619		1112
620	AV *av = newAV ();	1113	fail:
621	av_push (av, newSVuv (tag));	1114	SvREFCNT_dec (sv);
622	av_push (av, sv);	1115	return &PL_sv_undef;
623	return newRV_noinc ((SV *)av);
624	}	1116	}
625		1117
626	static SV *	1118	static SV *
627	decode_sv (dec_t *dec)	1119	decode_sv (dec_t *dec)
628	{	1120	{
629	WANT (1);	1121	WANT (1);
630		1122
631	switch (*dec->cur >> 5)	1123	switch (*dec->cur >> MAJOR_SHIFT)
632	{	1124	{
633	case 0: // unsigned int	1125	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
634	return newSVuv (decode_uint (dec));	1126	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
635	case 1: // negative int	1127	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
636	return newSViv (-1 - (IV)decode_uint (dec));	1128	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
637	case 2: // octet string	1129	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
638	return decode_str (dec, 0);	1130	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
639	case 3: // utf-8 string	1131	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
640	return decode_str (dec, 1);	1132
641	case 4: // array	1133	case MAJOR_MISC >> MAJOR_SHIFT:
642	return decode_av (dec);
643	case 5: // map
644	return decode_hv (dec);
645	case 6: // tag
646	return decode_tagged (dec);
647	case 7: // misc
648	switch (*dec->cur++ & 31)	1134	switch (*dec->cur++ & MINOR_MASK)
649	{	1135	{
650	case 20:	1136	case SIMPLE_FALSE:
651	#if CBOR_SLOW	1137	#if CBOR_SLOW
652	cbor_false = get_bool ("CBOR::XS::false");	1138	types_false = get_bool ("Types::Serialiser::false");
653	#endif	1139	#endif
654	return newSVsv (cbor_false);	1140	return newSVsv (types_false);
655	case 21:	1141	case SIMPLE_TRUE:
656	#if CBOR_SLOW	1142	#if CBOR_SLOW
657	cbor_true = get_bool ("CBOR::XS::true");	1143	types_true = get_bool ("Types::Serialiser::true");
658	#endif	1144	#endif
659	return newSVsv (cbor_true);	1145	return newSVsv (types_true);
660	case 22:	1146	case SIMPLE_NULL:
661	return newSVsv (&PL_sv_undef);	1147	return newSVsv (&PL_sv_undef);
		1148	case SIMPLE_UNDEF:
		1149	#if CBOR_SLOW
		1150	types_error = get_bool ("Types::Serialiser::error");
		1151	#endif
		1152	return newSVsv (types_error);
662		1153
663	case 25:	1154	case MISC_FLOAT16:
664	{	1155	{
665	WANT (2);	1156	WANT (2);
666		1157
667	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1158	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
668	dec->cur += 2;	1159	dec->cur += 2;
669		1160
670	return newSVnv (ecb_binary16_to_float (fp));	1161	return newSVnv (ecb_binary16_to_float (fp));
671	}	1162	}
672		1163
673	case 26:	1164	case MISC_FLOAT32:
674	{	1165	{
675	uint32_t fp;	1166	uint32_t fp;
676	WANT (4);	1167	WANT (4);
677	memcpy (&fp, dec->cur, 4);	1168	memcpy (&fp, dec->cur, 4);
678	dec->cur += 4;	1169	dec->cur += 4;
…		…
681	fp = ecb_bswap32 (fp);	1172	fp = ecb_bswap32 (fp);
682		1173
683	return newSVnv (ecb_binary32_to_float (fp));	1174	return newSVnv (ecb_binary32_to_float (fp));
684	}	1175	}
685		1176
686	case 27:	1177	case MISC_FLOAT64:
687	{	1178	{
688	uint64_t fp;	1179	uint64_t fp;
689	WANT (8);	1180	WANT (8);
690	memcpy (&fp, dec->cur, 8);	1181	memcpy (&fp, dec->cur, 8);
691	dec->cur += 8;	1182	dec->cur += 8;
…		…
694	fp = ecb_bswap64 (fp);	1185	fp = ecb_bswap64 (fp);
695		1186
696	return newSVnv (ecb_binary64_to_double (fp));	1187	return newSVnv (ecb_binary64_to_double (fp));
697	}	1188	}
698		1189
699	// 0..19 unassigned	1190	// 0..19 unassigned simple
700	// 24 reserved + unassigned (reserved values are not encodable)	1191	// 24 reserved + unassigned simple (reserved values are not encodable)
		1192	// 28-30 unassigned misc
		1193	// 31 break code
701	default:	1194	default:
702	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1195	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
703	}	1196	}
704		1197
705	break;	1198	break;
706	}	1199	}
707		1200
…		…
710	}	1203	}
711		1204
712	static SV *	1205	static SV *
713	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1206	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
714	{	1207	{
715	dec_t dec;	1208	dec_t dec = { 0 };
716	SV *sv;	1209	SV *sv;
		1210	STRLEN len;
		1211	char *data = SvPVbyte (string, len);
717		1212
718	/* work around bugs in 5.10 where manipulating magic values
719	* makes perl ignore the magic in subsequent accesses.
720	* also make a copy of non-PV values, to get them into a clean
721	* state (SvPV should do that, but it's buggy, see below).
722	*/
723	/*SvGETMAGIC (string);*/
724	if (SvMAGICAL (string) || !SvPOK (string))
725	string = sv_2mortal (newSVsv (string));
726
727	SvUPGRADE (string, SVt_PV);
728
729	/* work around a bug in perl 5.10, which causes SvCUR to fail an
730	* assertion with -DDEBUGGING, although SvCUR is documented to
731	* return the xpv_cur field which certainly exists after upgrading.
732	* according to nicholas clark, calling SvPOK fixes this.
733	* But it doesn't fix it, so try another workaround, call SvPV_nolen
734	* and hope for the best.
735	* Damnit, SvPV_nolen still trips over yet another assertion. This
736	* assertion business is seriously broken, try yet another workaround
737	* for the broken -DDEBUGGING.
738	*/
739	{
740	#ifdef DEBUGGING
741	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
742	#else
743	STRLEN offset = SvCUR (string);
744	#endif
745
746	if (offset > cbor->max_size && cbor->max_size)	1213	if (len > cbor->max_size && cbor->max_size)
747	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1214	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
748	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1215	(unsigned long)len, (unsigned long)cbor->max_size);
749	}
750
751	sv_utf8_downgrade (string, 0);
752		1216
753	dec.cbor = *cbor;	1217	dec.cbor = *cbor;
754	dec.cur = (U8 *)SvPVX (string);	1218	dec.cur = (U8 *)data;
755	dec.end = (U8 *)SvEND (string);	1219	dec.end = (U8 *)data + len;
756	dec.err = 0;
757	dec.depth = 0;
758		1220
759	sv = decode_sv (&dec);	1221	sv = decode_sv (&dec);
760		1222
761	if (offset_return)	1223	if (offset_return)
762	*offset_return = dec.cur;	1224	*offset_return = dec.cur;
…		…
765	if (dec.cur != dec.end && !dec.err)	1227	if (dec.cur != dec.end && !dec.err)
766	dec.err = "garbage after CBOR object";	1228	dec.err = "garbage after CBOR object";
767		1229
768	if (dec.err)	1230	if (dec.err)
769	{	1231	{
		1232	if (dec.shareable)
		1233	{
		1234	// need to break cyclic links, which whould all be in shareable
		1235	int i;
		1236	SV **svp;
		1237
		1238	for (i = av_len (dec.shareable) + 1; i--; )
		1239	if ((svp = av_fetch (dec.shareable, i, 0)))
		1240	sv_setsv (*svp, &PL_sv_undef);
		1241	}
		1242
770	SvREFCNT_dec (sv);	1243	SvREFCNT_dec (sv);
771	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1244	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
772	}	1245	}
773		1246
774	sv = sv_2mortal (sv);	1247	sv = sv_2mortal (sv);
775		1248
776	return sv;	1249	return sv;
777	}	1250	}
778		1251
		1252	/////////////////////////////////////////////////////////////////////////////
		1253	// incremental parser
		1254
		1255	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1256
		1257	// returns 0 for notyet, 1 for success or error
		1258	static int
		1259	incr_parse (CBOR *self, SV *cborstr)
		1260	{
		1261	STRLEN cur;
		1262	SvPV (cborstr, cur);
		1263
		1264	while (ecb_expect_true (self->incr_need <= cur))
		1265	{
		1266	// table of integer count bytes
		1267	static I8 incr_len[MINOR_MASK + 1] = {
		1268	0, 0, 0, 0, 0, 0, 0, 0,
		1269	0, 0, 0, 0, 0, 0, 0, 0,
		1270	0, 0, 0, 0, 0, 0, 0, 0,
		1271	1, 2, 4, 8,-1,-1,-1,-2
		1272	};
		1273
		1274	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1275	U8 m = *p & MINOR_MASK;
		1276	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1277	I8 ilen = incr_len[m];
		1278
		1279	self->incr_need = self->incr_pos + 1;
		1280
		1281	if (ecb_expect_false (ilen < 0))
		1282	{
		1283	if (m != MINOR_INDEF)
		1284	return 1; // error
		1285
		1286	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1287	{
		1288	if (count >= 0)
		1289	return 1; // error
		1290
		1291	count = 1;
		1292	}
		1293	else
		1294	{
		1295	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1296	count = -1;
		1297	}
		1298	}
		1299	else
		1300	{
		1301	self->incr_need += ilen;
		1302	if (ecb_expect_false (self->incr_need > cur))
		1303	return 0;
		1304
		1305	int major = *p >> MAJOR_SHIFT;
		1306
		1307	switch (major)
		1308	{
		1309	case MAJOR_TAG >> MAJOR_SHIFT:
		1310	++count; // tags merely prefix another value
		1311	break;
		1312
		1313	case MAJOR_BYTES >> MAJOR_SHIFT:
		1314	case MAJOR_TEXT >> MAJOR_SHIFT:
		1315	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1316	case MAJOR_MAP >> MAJOR_SHIFT:
		1317	{
		1318	UV len;
		1319
		1320	if (ecb_expect_false (ilen))
		1321	{
		1322	len = 0;
		1323
		1324	do {
		1325	len = (len << 8) | *++p;
		1326	} while (--ilen);
		1327	}
		1328	else
		1329	len = m;
		1330
		1331	switch (major)
		1332	{
		1333	case MAJOR_BYTES >> MAJOR_SHIFT:
		1334	case MAJOR_TEXT >> MAJOR_SHIFT:
		1335	self->incr_need += len;
		1336	if (ecb_expect_false (self->incr_need > cur))
		1337	return 0;
		1338
		1339	break;
		1340
		1341	case MAJOR_MAP >> MAJOR_SHIFT:
		1342	len <<= 1;
		1343	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1344	if (len)
		1345	{
		1346	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1347	count = len + 1;
		1348	}
		1349	break;
		1350	}
		1351	}
		1352	}
		1353	}
		1354
		1355	self->incr_pos = self->incr_need;
		1356
		1357	if (count > 0)
		1358	{
		1359	while (!--count)
		1360	{
		1361	if (!AvFILLp (self->incr_count))
		1362	return 1; // done
		1363
		1364	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1365	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1366	}
		1367
		1368	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1369	}
		1370	}
		1371
		1372	return 0;
		1373	}
		1374
		1375
779	/////////////////////////////////////////////////////////////////////////////	1376	/////////////////////////////////////////////////////////////////////////////
780	// XS interface functions	1377	// XS interface functions
781		1378
782	MODULE = CBOR::XS PACKAGE = CBOR::XS	1379	MODULE = CBOR::XS PACKAGE = CBOR::XS
783		1380
784	BOOT:	1381	BOOT:
785	{	1382	{
786	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1383	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
787	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
788	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1384	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
789		1385
790	cbor_true = get_bool ("CBOR::XS::true");	1386	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
791	cbor_false = get_bool ("CBOR::XS::false");	1387	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1388
		1389	types_true = get_bool ("Types::Serialiser::true" );
		1390	types_false = get_bool ("Types::Serialiser::false");
		1391	types_error = get_bool ("Types::Serialiser::error");
		1392
		1393	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1394
		1395	sv_cbor = newSVpv ("CBOR", 0);
		1396	SvREADONLY_on (sv_cbor);
792	}	1397	}
793		1398
794	PROTOTYPES: DISABLE	1399	PROTOTYPES: DISABLE
795		1400
796	void CLONE (...)	1401	void CLONE (...)
797	CODE:	1402	CODE:
798	cbor_stash = 0;	1403	cbor_stash = 0;
799	cbor_boolean_stash = 0;
800	cbor_tagged_stash = 0;	1404	cbor_tagged_stash = 0;
		1405	types_error_stash = 0;
		1406	types_boolean_stash = 0;
801		1407
802	void new (char *klass)	1408	void new (char *klass)
803	PPCODE:	1409	PPCODE:
804	{	1410	{
805	SV *pv = NEWSV (0, sizeof (CBOR));	1411	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
813		1419
814	void shrink (CBOR *self, int enable = 1)	1420	void shrink (CBOR *self, int enable = 1)
815	ALIAS:	1421	ALIAS:
816	shrink = F_SHRINK	1422	shrink = F_SHRINK
817	allow_unknown = F_ALLOW_UNKNOWN	1423	allow_unknown = F_ALLOW_UNKNOWN
		1424	allow_sharing = F_ALLOW_SHARING
		1425	allow_cycles = F_ALLOW_CYCLES
		1426	pack_strings = F_PACK_STRINGS
		1427	utf8_strings = F_UTF8_STRINGS
		1428	validate_utf8 = F_VALIDATE_UTF8
818	PPCODE:	1429	PPCODE:
819	{	1430	{
820	if (enable)	1431	if (enable)
821	self->flags |= ix;	1432	self->flags |= ix;
822	else	1433	else
…		…
827		1438
828	void get_shrink (CBOR *self)	1439	void get_shrink (CBOR *self)
829	ALIAS:	1440	ALIAS:
830	get_shrink = F_SHRINK	1441	get_shrink = F_SHRINK
831	get_allow_unknown = F_ALLOW_UNKNOWN	1442	get_allow_unknown = F_ALLOW_UNKNOWN
		1443	get_allow_sharing = F_ALLOW_SHARING
		1444	get_allow_cycles = F_ALLOW_CYCLES
		1445	get_pack_strings = F_PACK_STRINGS
		1446	get_validate_utf8 = F_VALIDATE_UTF8
832	PPCODE:	1447	PPCODE:
833	XPUSHs (boolSV (self->flags & ix));	1448	XPUSHs (boolSV (self->flags & ix));
834		1449
835	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1450	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
836	PPCODE:	1451	PPCODE:
…		…
852	CODE:	1467	CODE:
853	RETVAL = self->max_size;	1468	RETVAL = self->max_size;
854	OUTPUT:	1469	OUTPUT:
855	RETVAL	1470	RETVAL
856		1471
857	#if 0 //TODO	1472	void filter (CBOR *self, SV *filter = 0)
858
859	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
860	PPCODE:	1473	PPCODE:
861	{
862	SvREFCNT_dec (self->cb_object);	1474	SvREFCNT_dec (self->filter);
863	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1475	self->filter = filter ? newSVsv (filter) : filter;
864
865	XPUSHs (ST (0));	1476	XPUSHs (ST (0));
866	}
867		1477
868	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1478	SV *get_filter (CBOR *self)
869	PPCODE:	1479	CODE:
870	{	1480	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
871	if (!self->cb_sk_object)	1481	OUTPUT:
872	self->cb_sk_object = newHV ();	1482	RETVAL
873
874	if (SvOK (cb))
875	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
876	else
877	{
878	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
879
880	if (!HvKEYS (self->cb_sk_object))
881	{
882	SvREFCNT_dec (self->cb_sk_object);
883	self->cb_sk_object = 0;
884	}
885	}
886
887	XPUSHs (ST (0));
888	}
889
890	#endif
891		1483
892	void encode (CBOR *self, SV *scalar)	1484	void encode (CBOR *self, SV *scalar)
893	PPCODE:	1485	PPCODE:
894	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1486	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
895	XPUSHs (scalar);	1487	XPUSHs (scalar);
…		…
908	EXTEND (SP, 2);	1500	EXTEND (SP, 2);
909	PUSHs (sv);	1501	PUSHs (sv);
910	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1502	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
911	}	1503	}
912		1504
913	#if 0	1505	void incr_parse (CBOR *self, SV *cborstr)
		1506	ALIAS:
		1507	incr_parse_multiple = 1
		1508	PPCODE:
		1509	{
		1510	if (SvUTF8 (cborstr))
		1511	sv_utf8_downgrade (cborstr, 0);
		1512
		1513	if (!self->incr_count)
		1514	{
		1515	self->incr_count = newAV ();
		1516	self->incr_pos = 0;
		1517	self->incr_need = 1;
		1518
		1519	av_push (self->incr_count, newSViv (1));
		1520	}
		1521
		1522	do
		1523	{
		1524	if (!incr_parse (self, cborstr))
		1525	{
		1526	if (self->incr_need > self->max_size && self->max_size)
		1527	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1528	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1529
		1530	break;
		1531	}
		1532
		1533	SV *sv;
		1534	char *offset;
		1535
		1536	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1537	XPUSHs (sv);
		1538
		1539	sv_chop (cborstr, offset);
		1540
		1541	av_clear (self->incr_count);
		1542	av_push (self->incr_count, newSViv (1));
		1543
		1544	self->incr_pos = 0;
		1545	self->incr_need = self->incr_pos + 1;
		1546	}
		1547	while (ix);
		1548	}
		1549
		1550	void incr_reset (CBOR *self)
		1551	CODE:
		1552	{
		1553	SvREFCNT_dec (self->incr_count);
		1554	self->incr_count = 0;
		1555	}
914		1556
915	void DESTROY (CBOR *self)	1557	void DESTROY (CBOR *self)
916	CODE:	1558	PPCODE:
917	SvREFCNT_dec (self->cb_sk_object);	1559	cbor_free (self);
918	SvREFCNT_dec (self->cb_object);
919
920	#endif
921		1560
922	PROTOTYPES: ENABLE	1561	PROTOTYPES: ENABLE
923		1562
924	void encode_cbor (SV *scalar)	1563	void encode_cbor (SV *scalar)
		1564	ALIAS:
		1565	encode_cbor = 0
		1566	encode_cbor_sharing = F_ALLOW_SHARING
925	PPCODE:	1567	PPCODE:
926	{	1568	{
927	CBOR cbor;	1569	CBOR cbor;
928	cbor_init (&cbor);	1570	cbor_init (&cbor);
		1571	cbor.flags |= ix;
929	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1572	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
930	XPUSHs (scalar);	1573	XPUSHs (scalar);
931	}	1574	}
932		1575
933	void decode_cbor (SV *cborstr)	1576	void decode_cbor (SV *cborstr)

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines