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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.2 by root, Sat Oct 26 10:41:12 2013 UTC vs.
Revision 1.38 by root, Sun Dec 1 14:30:52 2013 UTC

…		…
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
12	#include "ecb.h"	12	#include "ecb.h"
13		13
14	#if defined(__BORLANDC__) || defined(_MSC_VER)	14	// compatibility with perl <5.18
15	# define snprintf _snprintf // C compilers have this in stdio.h	15	#ifndef HvNAMELEN_get
		16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
16	#endif	17	#endif
		18	#ifndef HvNAMELEN
		19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		20	#endif
		21	#ifndef HvNAMEUTF8
		22	# define HvNAMEUTF8(hv) 0
		23	#endif
		24	#ifndef SvREFCNT_dec_NN
		25	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		26	#endif
17		27
		28	// known major and minor types
		29	enum cbor_type
		30	{
		31	MAJOR_SHIFT = 5,
		32	MINOR_MASK = 0x1f,
		33
		34	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		35	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		36	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		37	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		38	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		39	MAJOR_MAP = 5 << MAJOR_SHIFT,
		40	MAJOR_TAG = 6 << MAJOR_SHIFT,
		41	MAJOR_MISC = 7 << MAJOR_SHIFT,
		42
		43	// INT/STRING/ARRAY/MAP subtypes
		44	LENGTH_EXT1 = 24,
		45	LENGTH_EXT2 = 25,
		46	LENGTH_EXT4 = 26,
		47	LENGTH_EXT8 = 27,
		48
		49	// SIMPLE types (effectively MISC subtypes)
		50	SIMPLE_FALSE = 20,
		51	SIMPLE_TRUE = 21,
		52	SIMPLE_NULL = 22,
		53	SIMPLE_UNDEF = 23,
		54
		55	// MISC subtype (unused)
		56	MISC_EXT1 = 24,
		57	MISC_FLOAT16 = 25,
		58	MISC_FLOAT32 = 26,
		59	MISC_FLOAT64 = 27,
		60
		61	// BYTES/TEXT/ARRAY/MAP
		62	MINOR_INDEF = 31,
		63	};
		64
		65	// known tags
		66	enum cbor_tag
		67	{
		68	// extensions
		69	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		70	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		71	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		72	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		73	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		75	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
		76
		77	// rfc7049
		78	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		79	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		80	CBOR_TAG_POS_BIGNUM = 2, // byte string
		81	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		82	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		83	CBOR_TAG_BIGFLOAT = 5, // array
		84
		85	CBOR_TAG_CONV_B64U = 21, // base64url, any
		86	CBOR_TAG_CONV_B64 = 22, // base64, any
		87	CBOR_TAG_CONV_HEX = 23, // base16, any
		88	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		89
		90	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		91	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		92	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		93	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		94	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		95
		96	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		97	};
		98
18	#define F_SHRINK 0x00000200UL	99	#define F_SHRINK 0x00000001UL
19	#define F_ALLOW_UNKNOWN 0x00002000UL	100	#define F_ALLOW_UNKNOWN 0x00000002UL
		101	#define F_ALLOW_SHARING 0x00000004UL
		102	#define F_ALLOW_CYCLES 0x00000008UL
		103	#define F_PACK_STRINGS 0x00000010UL
		104	#define F_VALIDATE_UTF8 0x00000020UL
20		105
21	#define INIT_SIZE 32 // initial scalar size to be allocated	106	#define INIT_SIZE 32 // initial scalar size to be allocated
22		107
23	#define SB do {	108	#define SB do {
24	#define SE } while (0)	109	#define SE } while (0)
25
26	#if __GNUC__ >= 3
27	# define expect(expr,value) __builtin_expect ((expr), (value))
28	# define INLINE static inline
29	#else
30	# define expect(expr,value) (expr)
31	# define INLINE static
32	#endif
33
34	#define expect_false(expr) expect ((expr) != 0, 0)
35	#define expect_true(expr) expect ((expr) != 0, 1)
36		110
37	#define IN_RANGE_INC(type,val,beg,end) \	111	#define IN_RANGE_INC(type,val,beg,end) \
38	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	112	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
39	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	113	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
40		114
…		…
46	#else	120	#else
47	# define CBOR_SLOW 0	121	# define CBOR_SLOW 0
48	# define CBOR_STASH cbor_stash	122	# define CBOR_STASH cbor_stash
49	#endif	123	#endif
50		124
51	static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS::	125	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
52	static SV *cbor_true, *cbor_false;	126	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
53		127
54	typedef struct {	128	typedef struct {
55	U32 flags;	129	U32 flags;
56	U32 max_depth;	130	U32 max_depth;
57	STRLEN max_size;	131	STRLEN max_size;
58		132	SV *filter;
59	SV *cb_object;
60	HV *cb_sk_object;
61	} CBOR;	133	} CBOR;
62		134
63	INLINE void	135	ecb_inline void
64	cbor_init (CBOR *cbor)	136	cbor_init (CBOR *cbor)
65	{	137	{
66	Zero (cbor, 1, CBOR);	138	Zero (cbor, 1, CBOR);
67	cbor->max_depth = 512;	139	cbor->max_depth = 512;
68	}	140	}
69		141
		142	ecb_inline void
		143	cbor_free (CBOR *cbor)
		144	{
		145	SvREFCNT_dec (cbor->filter);
		146	}
		147
70	/////////////////////////////////////////////////////////////////////////////	148	/////////////////////////////////////////////////////////////////////////////
71	// utility functions	149	// utility functions
72		150
73	INLINE SV *	151	ecb_inline SV *
74	get_bool (const char *name)	152	get_bool (const char *name)
75	{	153	{
76	SV *sv = get_sv (name, 1);	154	SV *sv = get_sv (name, 1);
77		155
78	SvREADONLY_on (sv);	156	SvREADONLY_on (sv);
79	SvREADONLY_on (SvRV (sv));	157	SvREADONLY_on (SvRV (sv));
80		158
81	return sv;	159	return sv;
82	}	160	}
83		161
84	INLINE void	162	ecb_inline void
85	shrink (SV *sv)	163	shrink (SV *sv)
86	{	164	{
87	sv_utf8_downgrade (sv, 1);	165	sv_utf8_downgrade (sv, 1);
88		166
89	if (SvLEN (sv) > SvCUR (sv) + 1)	167	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
94	SvPV_renew (sv, SvCUR (sv) + 1);	172	SvPV_renew (sv, SvCUR (sv) + 1);
95	#endif	173	#endif
96	}	174	}
97	}	175	}
98		176
99	/////////////////////////////////////////////////////////////////////////////	177	// minimum length of a string to be registered for stringref
100	// fp hell	178	ecb_inline int
101		179	minimum_string_length (UV idx)
102	//TODO	180	{
		181	return idx > 23
		182	? idx > 0xffU
		183	? idx > 0xffffU
		184	? idx > 0xffffffffU
		185	? 11
		186	: 7
		187	: 5
		188	: 4
		189	: 3;
		190	}
103		191
104	/////////////////////////////////////////////////////////////////////////////	192	/////////////////////////////////////////////////////////////////////////////
105	// encoder	193	// encoder
106		194
107	// structure used for encoding CBOR	195	// structure used for encoding CBOR
…		…
110	char *cur; // SvPVX (sv) + current output position	198	char *cur; // SvPVX (sv) + current output position
111	char *end; // SvEND (sv)	199	char *end; // SvEND (sv)
112	SV *sv; // result scalar	200	SV *sv; // result scalar
113	CBOR cbor;	201	CBOR cbor;
114	U32 depth; // recursion level	202	U32 depth; // recursion level
		203	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		204	UV stringref_idx;
		205	HV *shareable; // ptr => index, or 0
		206	UV shareable_idx;
115	} enc_t;	207	} enc_t;
116		208
117	INLINE void	209	ecb_inline void
118	need (enc_t *enc, STRLEN len)	210	need (enc_t *enc, STRLEN len)
119	{	211	{
120	if (expect_false (enc->cur + len >= enc->end))	212	if (ecb_expect_false (enc->cur + len >= enc->end))
121	{	213	{
122	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	214	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
123	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	215	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
124	enc->cur = SvPVX (enc->sv) + cur;	216	enc->cur = SvPVX (enc->sv) + cur;
125	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	217	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
126	}	218	}
127	}	219	}
128		220
129	INLINE void	221	ecb_inline void
130	encode_ch (enc_t *enc, char ch)	222	encode_ch (enc_t *enc, char ch)
131	{	223	{
132	need (enc, 1);	224	need (enc, 1);
133	*enc->cur++ = ch;	225	*enc->cur++ = ch;
134	}	226	}
…		…
136	static void	228	static void
137	encode_uint (enc_t *enc, int major, UV len)	229	encode_uint (enc_t *enc, int major, UV len)
138	{	230	{
139	need (enc, 9);	231	need (enc, 9);
140		232
141	if (len < 24)	233	if (ecb_expect_true (len < LENGTH_EXT1))
142	*enc->cur++ = major | len;	234	*enc->cur++ = major | len;
143	else if (len < 0x100)	235	else if (ecb_expect_true (len <= 0xffU))
144	{	236	{
145	*enc->cur++ = major | 24;	237	*enc->cur++ = major | LENGTH_EXT1;
146	*enc->cur++ = len;	238	*enc->cur++ = len;
147	}	239	}
148	else if (len < 0x10000)	240	else if (len <= 0xffffU)
149	{	241	{
150	*enc->cur++ = major | 25;	242	*enc->cur++ = major | LENGTH_EXT2;
151	*enc->cur++ = len >> 8;	243	*enc->cur++ = len >> 8;
152	*enc->cur++ = len;	244	*enc->cur++ = len;
153	}	245	}
154	else if (len < 0x100000000)	246	else if (len <= 0xffffffffU)
155	{	247	{
156	*enc->cur++ = major | 26;	248	*enc->cur++ = major | LENGTH_EXT4;
157	*enc->cur++ = len >> 24;	249	*enc->cur++ = len >> 24;
158	*enc->cur++ = len >> 16;	250	*enc->cur++ = len >> 16;
159	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
160	*enc->cur++ = len;	252	*enc->cur++ = len;
161	}	253	}
162	else if (len)	254	else
163	{	255	{
164	*enc->cur++ = major | 27;	256	*enc->cur++ = major | LENGTH_EXT8;
165	*enc->cur++ = len >> 56;	257	*enc->cur++ = len >> 56;
166	*enc->cur++ = len >> 48;	258	*enc->cur++ = len >> 48;
167	*enc->cur++ = len >> 40;	259	*enc->cur++ = len >> 40;
168	*enc->cur++ = len >> 32;	260	*enc->cur++ = len >> 32;
169	*enc->cur++ = len >> 24;	261	*enc->cur++ = len >> 24;
…		…
171	*enc->cur++ = len >> 8;	263	*enc->cur++ = len >> 8;
172	*enc->cur++ = len;	264	*enc->cur++ = len;
173	}	265	}
174	}	266	}
175		267
176	static void	268	ecb_inline void
		269	encode_tag (enc_t *enc, UV tag)
		270	{
		271	encode_uint (enc, MAJOR_TAG, tag);
		272	}
		273
		274	ecb_inline void
177	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	275	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
178	{	276	{
179	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	277	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
180	need (enc, len);	278	need (enc, len);
181	memcpy (enc->cur, str, len);	279	memcpy (enc->cur, str, len);
182	enc->cur += len;	280	enc->cur += len;
183	}	281	}
184		282
		283	static void
		284	encode_strref (enc_t *enc, int utf8, char *str, STRLEN len)
		285	{
		286	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		287	{
		288	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		289
		290	if (SvOK (*svp))
		291	{
		292	// already registered, use stringref
		293	encode_tag (enc, CBOR_TAG_STRINGREF);
		294	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		295	return;
		296	}
		297	else if (len >= minimum_string_length (enc->stringref_idx))
		298	{
		299	// register only
		300	sv_setuv (*svp, enc->stringref_idx);
		301	++enc->stringref_idx;
		302	}
		303	}
		304
		305	encode_str (enc, utf8, str, len);
		306	}
		307
185	static void encode_sv (enc_t *enc, SV *sv);	308	static void encode_sv (enc_t *enc, SV *sv);
186		309
187	static void	310	static void
188	encode_av (enc_t *enc, AV *av)	311	encode_av (enc_t *enc, AV *av)
189	{	312	{
…		…
192	if (enc->depth >= enc->cbor.max_depth)	315	if (enc->depth >= enc->cbor.max_depth)
193	croak (ERR_NESTING_EXCEEDED);	316	croak (ERR_NESTING_EXCEEDED);
194		317
195	++enc->depth;	318	++enc->depth;
196		319
197	encode_uint (enc, 0x80, len + 1);	320	encode_uint (enc, MAJOR_ARRAY, len + 1);
198		321
199	for (i = 0; i <= len; ++i)	322	for (i = 0; i <= len; ++i)
200	{	323	{
201	SV **svp = av_fetch (av, i, 0);	324	SV **svp = av_fetch (av, i, 0);
202	encode_sv (enc, svp ? *svp : &PL_sv_undef);	325	encode_sv (enc, svp ? *svp : &PL_sv_undef);
…		…
217		340
218	int pairs = hv_iterinit (hv);	341	int pairs = hv_iterinit (hv);
219	int mg = SvMAGICAL (hv);	342	int mg = SvMAGICAL (hv);
220		343
221	if (mg)	344	if (mg)
222	encode_ch (enc, 0xa0 | 31);	345	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
223	else	346	else
224	encode_uint (enc, 0xa0, pairs);	347	encode_uint (enc, MAJOR_MAP, pairs);
225		348
226	while ((he = hv_iternext (hv)))	349	while ((he = hv_iternext (hv)))
227	{	350	{
228	if (HeKLEN (he) == HEf_SVKEY)	351	if (HeKLEN (he) == HEf_SVKEY)
229	encode_sv (enc, HeSVKEY (he));	352	encode_sv (enc, HeSVKEY (he));
230	else	353	else
231	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	354	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
232		355
233	encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	356	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
234	}	357	}
235		358
236	if (mg)	359	if (mg)
237	encode_ch (enc, 0xe0 | 31);	360	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
238		361
239	--enc->depth;	362	--enc->depth;
240	}	363	}
241		364
242	// encode objects, arrays and special \0=false and \1=true values.	365	// encode objects, arrays and special \0=false and \1=true values.
243	static void	366	static void
244	encode_rv (enc_t *enc, SV *sv)	367	encode_rv (enc_t *enc, SV *sv)
245	{	368	{
246	svtype svt;
247
248	SvGETMAGIC (sv);	369	SvGETMAGIC (sv);
		370
249	svt = SvTYPE (sv);	371	svtype svt = SvTYPE (sv);
250		372
251	if (expect_false (SvOBJECT (sv)))	373	if (ecb_expect_false (SvOBJECT (sv)))
252	{	374	{
253	HV *stash = !CBOR_SLOW || cbor_boolean_stash	375	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
254	? cbor_boolean_stash	376	? types_boolean_stash
		377	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		378	HV *error_stash = !CBOR_SLOW || types_error_stash
		379	? types_error_stash
		380	: gv_stashpv ("Types::Serialiser::Error", 1);
		381	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		382	? cbor_tagged_stash
255	: gv_stashpv ("CBOR::XS::Boolean", 1);	383	: gv_stashpv ("CBOR::XS::Tagged" , 1);
256		384
257	if (SvSTASH (sv) == stash)	385	HV *stash = SvSTASH (sv);
258	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	386
		387	if (stash == boolean_stash)
		388	{
		389	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		390	return;
		391	}
		392	else if (stash == error_stash)
		393	{
		394	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		395	return;
		396	}
		397	else if (stash == tagged_stash)
		398	{
		399	if (svt != SVt_PVAV)
		400	croak ("encountered CBOR::XS::Tagged object that isn't an array");
		401
		402	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
		403	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		404
		405	return;
		406	}
		407	}
		408
		409	if (ecb_expect_false (SvREFCNT (sv) > 1)
		410	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		411	{
		412	if (!enc->shareable)
		413	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		414
		415	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		416
		417	if (SvOK (*svp))
		418	{
		419	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		420	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		421	return;
		422	}
259	else	423	else
260	{	424	{
261	#if 0 //TODO	425	sv_setuv (*svp, enc->shareable_idx);
262	if (enc->cbor.flags & F_CONV_BLESSED)	426	++enc->shareable_idx;
		427	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		428	}
		429	}
		430
		431	if (ecb_expect_false (SvOBJECT (sv)))
		432	{
		433	HV *stash = SvSTASH (sv);
		434	GV *method;
		435
		436	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
263	{	437	{
		438	dSP;
		439
		440	ENTER; SAVETMPS; PUSHMARK (SP);
264	// we re-bless the reference to get overload and other niceties right	441	// we re-bless the reference to get overload and other niceties right
265	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
266
267	if (to_cbor)
268	{
269	dSP;
270
271	ENTER; SAVETMPS; PUSHMARK (SP);
272	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	442	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
273		443
274	// calling with G_SCALAR ensures that we always get a 1 return value
275	PUTBACK;	444	PUTBACK;
		445	// G_SCALAR ensures that return value is 1
276	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	446	call_sv ((SV *)GvCV (method), G_SCALAR);
277	SPAGAIN;	447	SPAGAIN;
278		448
279	// catch this surprisingly common error	449	// catch this surprisingly common error
280	if (SvROK (TOPs) && SvRV (TOPs) == sv)	450	if (SvROK (TOPs) && SvRV (TOPs) == sv)
281	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	451	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
282		452
283	sv = POPs;
284	PUTBACK;
285
286	encode_sv (enc, sv);	453	encode_sv (enc, POPs);
287		454
		455	PUTBACK;
		456
288	FREETMPS; LEAVE;	457	FREETMPS; LEAVE;
289	}
290	else if (enc->cbor.flags & F_ALLOW_BLESSED)
291	encode_str (enc, "null", 4, 0);
292	else
293	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
294	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
295	}	458	}
296	else if (enc->cbor.flags & F_ALLOW_BLESSED)	459	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
297	encode_str (enc, "null", 4, 0);	460	{
		461	dSP;
		462
		463	ENTER; SAVETMPS; PUSHMARK (SP);
		464	EXTEND (SP, 2);
		465	// we re-bless the reference to get overload and other niceties right
		466	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		467	PUSHs (sv_cbor);
		468
		469	PUTBACK;
		470	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		471	SPAGAIN;
		472
		473	// catch this surprisingly common error
		474	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		475	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		476
		477	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		478	encode_uint (enc, MAJOR_ARRAY, count + 1);
		479	encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		480
		481	while (count)
		482	encode_sv (enc, SP[1 - count--]);
		483
		484	PUTBACK;
		485
		486	FREETMPS; LEAVE;
		487	}
298	else	488	else
299	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",	489	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
300	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	490	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
301	#endif
302	}
303	}	491	}
304	else if (svt == SVt_PVHV)	492	else if (svt == SVt_PVHV)
305	encode_hv (enc, (HV *)sv);	493	encode_hv (enc, (HV *)sv);
306	else if (svt == SVt_PVAV)	494	else if (svt == SVt_PVAV)
307	encode_av (enc, (AV *)sv);	495	encode_av (enc, (AV *)sv);
308	else if (svt < SVt_PVAV)
309	{
310	STRLEN len = 0;
311	char *pv = svt ? SvPV (sv, len) : 0;
312
313	if (len == 1 && *pv == '1')
314	encode_ch (enc, 0xe0 | 21);
315	else if (len == 1 && *pv == '0')
316	encode_ch (enc, 0xe0 | 20);
317	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
318	encode_ch (enc, 0xe0 | 23);
319	else
320	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
321	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
322	}
323	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
324	encode_ch (enc, 0xe0 | 23);
325	else	496	else
326	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	497	{
327	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	498	encode_tag (enc, CBOR_TAG_INDIRECTION);
		499	encode_sv (enc, sv);
		500	}
328	}	501	}
329		502
330	static void	503	static void
331	encode_nv (enc_t *enc, SV *sv)	504	encode_nv (enc_t *enc, SV *sv)
332	{	505	{
333	double nv = SvNVX (sv);	506	double nv = SvNVX (sv);
334		507
335	need (enc, 9);	508	need (enc, 9);
336		509
337	if (expect_false (nv == (U32)nv))	510	if (ecb_expect_false (nv == (NV)(U32)nv))
338	encode_uint (enc, 0x00, (U32)nv);	511	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
339	//TODO: maybe I32?	512	//TODO: maybe I32?
340	else if (expect_false (nv == (float)nv))	513	else if (ecb_expect_false (nv == (float)nv))
341	{	514	{
342	uint32_t fp = ecb_float_to_binary32 (nv);	515	uint32_t fp = ecb_float_to_binary32 (nv);
343		516
344	*enc->cur++ = 0xe0 | 26;	517	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
345		518
346	if (!ecb_big_endian ())	519	if (!ecb_big_endian ())
347	fp = ecb_bswap32 (fp);	520	fp = ecb_bswap32 (fp);
348		521
349	memcpy (enc->cur, &fp, 4);	522	memcpy (enc->cur, &fp, 4);
…		…
351	}	524	}
352	else	525	else
353	{	526	{
354	uint64_t fp = ecb_double_to_binary64 (nv);	527	uint64_t fp = ecb_double_to_binary64 (nv);
355		528
356	*enc->cur++ = 0xe0 | 27;	529	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
357		530
358	if (!ecb_big_endian ())	531	if (!ecb_big_endian ())
359	fp = ecb_bswap64 (fp);	532	fp = ecb_bswap64 (fp);
360		533
361	memcpy (enc->cur, &fp, 8);	534	memcpy (enc->cur, &fp, 8);
…		…
370		543
371	if (SvPOKp (sv))	544	if (SvPOKp (sv))
372	{	545	{
373	STRLEN len;	546	STRLEN len;
374	char *str = SvPV (sv, len);	547	char *str = SvPV (sv, len);
375	encode_str (enc, SvUTF8 (sv), str, len);	548	encode_strref (enc, SvUTF8 (sv), str, len);
376	}	549	}
377	else if (SvNOKp (sv))	550	else if (SvNOKp (sv))
378	encode_nv (enc, sv);	551	encode_nv (enc, sv);
379	else if (SvIOKp (sv))	552	else if (SvIOKp (sv))
380	{	553	{
381	if (SvIsUV (sv))	554	if (SvIsUV (sv))
382	encode_uint (enc, 0x00, SvUVX (sv));	555	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
383	else if (SvIVX (sv) >= 0)	556	else if (SvIVX (sv) >= 0)
384	encode_uint (enc, 0x00, SvIVX (sv));	557	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
385	else	558	else
386	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	559	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
387	}	560	}
388	else if (SvROK (sv))	561	else if (SvROK (sv))
389	encode_rv (enc, SvRV (sv));	562	encode_rv (enc, SvRV (sv));
390	else if (!SvOK (sv))	563	else if (!SvOK (sv))
391	encode_ch (enc, 0xe0 | 22);	564	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
392	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	565	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
393	encode_ch (enc, 0xe0 | 23);	566	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
394	else	567	else
395	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	568	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
396	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	569	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
397	}	570	}
398		571
399	static SV *	572	static SV *
400	encode_cbor (SV *scalar, CBOR *cbor)	573	encode_cbor (SV *scalar, CBOR *cbor)
401	{	574	{
402	enc_t enc;	575	enc_t enc = { };
403		576
404	enc.cbor = *cbor;	577	enc.cbor = *cbor;
405	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	578	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
406	enc.cur = SvPVX (enc.sv);	579	enc.cur = SvPVX (enc.sv);
407	enc.end = SvEND (enc.sv);	580	enc.end = SvEND (enc.sv);
408	enc.depth = 0;
409		581
410	SvPOK_only (enc.sv);	582	SvPOK_only (enc.sv);
		583
		584	if (cbor->flags & F_PACK_STRINGS)
		585	{
		586	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		587	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		588	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		589	}
		590
411	encode_sv (&enc, scalar);	591	encode_sv (&enc, scalar);
412		592
413	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	593	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
414	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	594	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
415		595
…		…
429	U8 *end; // end of input string	609	U8 *end; // end of input string
430	const char *err; // parse error, if != 0	610	const char *err; // parse error, if != 0
431	CBOR cbor;	611	CBOR cbor;
432	U32 depth; // recursion depth	612	U32 depth; // recursion depth
433	U32 maxdepth; // recursion depth limit	613	U32 maxdepth; // recursion depth limit
		614	AV *shareable;
		615	AV *stringref;
		616	SV *decode_tagged;
434	} dec_t;	617	} dec_t;
435		618
436	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	619	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
437		620
438	#define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data");	621	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")
439		622
440	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	623	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)
441	#define DEC_DEC_DEPTH --dec->depth	624	#define DEC_DEC_DEPTH --dec->depth
442		625
443	static UV	626	static UV
444	decode_uint (dec_t *dec)	627	decode_uint (dec_t *dec)
445	{	628	{
446	switch (*dec->cur & 31)	629	U8 m = *dec->cur & MINOR_MASK;
447	{	630	++dec->cur;
448	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
449	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
450	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
451	return *dec->cur++ & 31;
452		631
453	case 24:	632	if (ecb_expect_true (m < LENGTH_EXT1))
		633	return m;
		634	else if (ecb_expect_true (m == LENGTH_EXT1))
		635	{
454	WANT (2);	636	WANT (1);
455	dec->cur += 2;	637	dec->cur += 1;
456	return dec->cur[-1];	638	return dec->cur[-1];
457		639	}
458	case 25:	640	else if (ecb_expect_true (m == LENGTH_EXT2))
		641	{
459	WANT (3);	642	WANT (2);
460	dec->cur += 3;	643	dec->cur += 2;
461	return (((UV)dec->cur[-2]) << 8)	644	return (((UV)dec->cur[-2]) << 8)
462	| ((UV)dec->cur[-1]);	645	| ((UV)dec->cur[-1]);
463		646	}
464	case 26:	647	else if (ecb_expect_true (m == LENGTH_EXT4))
		648	{
465	WANT (5);	649	WANT (4);
466	dec->cur += 5;	650	dec->cur += 4;
467	return (((UV)dec->cur[-4]) << 24)	651	return (((UV)dec->cur[-4]) << 24)
468	| (((UV)dec->cur[-3]) << 16)	652	| (((UV)dec->cur[-3]) << 16)
469	| (((UV)dec->cur[-2]) << 8)	653	| (((UV)dec->cur[-2]) << 8)
470	| ((UV)dec->cur[-1]);	654	| ((UV)dec->cur[-1]);
471		655	}
472	case 27:	656	else if (ecb_expect_true (m == LENGTH_EXT8))
		657	{
473	WANT (9);	658	WANT (8);
474	dec->cur += 9;	659	dec->cur += 8;
		660
		661	return
		662	#if UVSIZE < 8
		663	0
		664	#else
475	return (((UV)dec->cur[-8]) << 56)	665	(((UV)dec->cur[-8]) << 56)
476	| (((UV)dec->cur[-7]) << 48)	666	| (((UV)dec->cur[-7]) << 48)
477	| (((UV)dec->cur[-6]) << 40)	667	| (((UV)dec->cur[-6]) << 40)
478	| (((UV)dec->cur[-5]) << 32)	668	| (((UV)dec->cur[-5]) << 32)
		669	#endif
479	| (((UV)dec->cur[-4]) << 24)	670	| (((UV)dec->cur[-4]) << 24)
480	| (((UV)dec->cur[-3]) << 16)	671	| (((UV)dec->cur[-3]) << 16)
481	| (((UV)dec->cur[-2]) << 8)	672	| (((UV)dec->cur[-2]) << 8)
482	| ((UV)dec->cur[-1]);	673	| ((UV)dec->cur[-1]);
483		674	}
484	default:	675	else
485	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	676	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
486	}
487		677
488	fail:	678	fail:
489	return 0;	679	return 0;
490	}	680	}
491		681
…		…
496	{	686	{
497	AV *av = newAV ();	687	AV *av = newAV ();
498		688
499	DEC_INC_DEPTH;	689	DEC_INC_DEPTH;
500		690
501	if ((*dec->cur & 31) == 31)	691	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
502	{	692	{
503	++dec->cur;	693	++dec->cur;
504		694
505	for (;;)	695	for (;;)
506	{	696	{
507	WANT (1);	697	WANT (1);
508		698
509	if (*dec->cur == (0xe0 | 31))	699	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
510	{	700	{
511	++dec->cur;	701	++dec->cur;
512	break;	702	break;
513	}	703	}
514		704
…		…
517	}	707	}
518	else	708	else
519	{	709	{
520	int i, len = decode_uint (dec);	710	int i, len = decode_uint (dec);
521		711
		712	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
522	av_fill (av, len - 1);	713	av_fill (av, len - 1);
523		714
524	for (i = 0; i < len; ++i)	715	for (i = 0; i < len; ++i)
525	AvARRAY (av)[i] = decode_sv (dec);	716	AvARRAY (av)[i] = decode_sv (dec);
526	}	717	}
…		…
532	SvREFCNT_dec (av);	723	SvREFCNT_dec (av);
533	DEC_DEC_DEPTH;	724	DEC_DEC_DEPTH;
534	return &PL_sv_undef;	725	return &PL_sv_undef;
535	}	726	}
536		727
		728	static void
		729	decode_he (dec_t *dec, HV *hv)
		730	{
		731	// for speed reasons, we specialcase single-string
		732	// byte or utf-8 strings as keys, but only when !stringref
		733
		734	if (ecb_expect_true (!dec->stringref))
		735	if (ecb_expect_true ((*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		736	{
		737	I32 len = decode_uint (dec);
		738	char *key = (char *)dec->cur;
		739
		740	dec->cur += len;
		741
		742	hv_store (hv, key, len, decode_sv (dec), 0);
		743
		744	return;
		745	}
		746	else if (ecb_expect_true ((*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		747	{
		748	I32 len = decode_uint (dec);
		749	char *key = (char *)dec->cur;
		750
		751	dec->cur += len;
		752
		753	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		754	if (!is_utf8_string (key, len))
		755	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		756
		757	hv_store (hv, key, -len, decode_sv (dec), 0);
		758
		759	return;
		760	}
		761
		762	SV *k = decode_sv (dec);
		763	SV *v = decode_sv (dec);
		764
		765	hv_store_ent (hv, k, v, 0);
		766	SvREFCNT_dec (k);
		767
		768	fail:
		769	;
		770	}
		771
537	static SV *	772	static SV *
538	decode_hv (dec_t *dec)	773	decode_hv (dec_t *dec)
539	{	774	{
540	HV *hv = newHV ();	775	HV *hv = newHV ();
541		776
542	DEC_INC_DEPTH;	777	DEC_INC_DEPTH;
543		778
544	if ((*dec->cur & 31) == 31)	779	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
545	{	780	{
546	++dec->cur;	781	++dec->cur;
547		782
548	for (;;)	783	for (;;)
549	{	784	{
550	WANT (1);	785	WANT (1);
551		786
552	if (*dec->cur == (0xe0 | 31))	787	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
553	{	788	{
554	++dec->cur;	789	++dec->cur;
555	break;	790	break;
556	}	791	}
557		792
558	SV *k = decode_sv (dec);	793	decode_he (dec, hv);
559	SV *v = decode_sv (dec);
560
561	hv_store_ent (hv, k, v, 0);
562	}	794	}
563	}	795	}
564	else	796	else
565	{	797	{
566	int len = decode_uint (dec);	798	int pairs = decode_uint (dec);
567		799
568	while (len--)	800	while (pairs--)
569	{	801	decode_he (dec, hv);
570	SV *k = decode_sv (dec);
571	SV *v = decode_sv (dec);
572
573	hv_store_ent (hv, k, v, 0);
574	}
575	}	802	}
576		803
577	DEC_DEC_DEPTH;	804	DEC_DEC_DEPTH;
578	return newRV_noinc ((SV *)hv);	805	return newRV_noinc ((SV *)hv);
579
580	#if 0
581	SV *sv;
582	HV *hv = newHV ();
583
584	DEC_INC_DEPTH;
585	decode_ws (dec);
586
587	for (;;)
588	{
589	// heuristic: assume that
590	// a) decode_str + hv_store_ent are abysmally slow.
591	// b) most hash keys are short, simple ascii text.
592	// => try to "fast-match" such strings to avoid
593	// the overhead of decode_str + hv_store_ent.
594	{
595	SV *value;
596	char *p = dec->cur;
597	char *e = p + 24; // only try up to 24 bytes
598
599	for (;;)
600	{
601	// the >= 0x80 is false on most architectures
602	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
603	{
604	// slow path, back up and use decode_str
605	SV *key = decode_str (dec);
606	if (!key)
607	goto fail;
608
609	decode_ws (dec); EXPECT_CH (':');
610
611	decode_ws (dec);
612	value = decode_sv (dec);
613	if (!value)
614	{
615	SvREFCNT_dec (key);
616	goto fail;
617	}
618
619	hv_store_ent (hv, key, value, 0);
620	SvREFCNT_dec (key);
621
622	break;
623	}
624	else if (*p == '"')
625	{
626	// fast path, got a simple key
627	char *key = dec->cur;
628	int len = p - key;
629	dec->cur = p + 1;
630
631	decode_ws (dec); EXPECT_CH (':');
632
633	decode_ws (dec);
634	value = decode_sv (dec);
635	if (!value)
636	goto fail;
637
638	hv_store (hv, key, len, value, 0);
639
640	break;
641	}
642
643	++p;
644	}
645	}
646
647	decode_ws (dec);
648
649	if (*dec->cur == '}')
650	{
651	++dec->cur;
652	break;
653	}
654
655	if (*dec->cur != ',')
656	ERR (", or } expected while parsing object/hash");
657
658	++dec->cur;
659
660	decode_ws (dec);
661
662	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
663	{
664	++dec->cur;
665	break;
666	}
667	}
668
669	DEC_DEC_DEPTH;
670	sv = newRV_noinc ((SV *)hv);
671
672	// check filter callbacks
673	if (dec->cbor.flags & F_HOOK)
674	{
675	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
676	{
677	HE *cb, *he;
678
679	hv_iterinit (hv);
680	he = hv_iternext (hv);
681	hv_iterinit (hv);
682
683	// the next line creates a mortal sv each time its called.
684	// might want to optimise this for common cases.
685	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
686
687	if (cb)
688	{
689	dSP;
690	int count;
691
692	ENTER; SAVETMPS; PUSHMARK (SP);
693	XPUSHs (HeVAL (he));
694	sv_2mortal (sv);
695
696	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
697
698	if (count == 1)
699	{
700	sv = newSVsv (POPs);
701	FREETMPS; LEAVE;
702	return sv;
703	}
704
705	SvREFCNT_inc (sv);
706	FREETMPS; LEAVE;
707	}
708	}
709
710	if (dec->cbor.cb_object)
711	{
712	dSP;
713	int count;
714
715	ENTER; SAVETMPS; PUSHMARK (SP);
716	XPUSHs (sv_2mortal (sv));
717
718	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
719
720	if (count == 1)
721	{
722	sv = newSVsv (POPs);
723	FREETMPS; LEAVE;
724	return sv;
725	}
726
727	SvREFCNT_inc (sv);
728	FREETMPS; LEAVE;
729	}
730	}
731
732	return sv;
733	#endif
734		806
735	fail:	807	fail:
736	SvREFCNT_dec (hv);	808	SvREFCNT_dec (hv);
737	DEC_DEC_DEPTH;	809	DEC_DEC_DEPTH;
738	return &PL_sv_undef;	810	return &PL_sv_undef;
739	}	811	}
740		812
741	static SV *	813	static SV *
742	decode_str (dec_t *dec, int utf8)	814	decode_str (dec_t *dec, int utf8)
743	{	815	{
744	SV *sv;	816	SV *sv = 0;
745		817
746	if ((*dec->cur & 31) == 31)	818	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
747	{	819	{
		820	// indefinite length strings
748	++dec->cur;	821	++dec->cur;
749		822
		823	U8 major = *dec->cur & MAJOR_MISC;
		824
750	sv = newSVpvn ("", 0);	825	sv = newSVpvn ("", 0);
751		826
752	// not very fast, and certainly not robust against illegal input
753	for (;;)	827	for (;;)
754	{	828	{
755	WANT (1);	829	WANT (1);
756		830
757	if (*dec->cur == (0xe0 | 31))	831	if ((*dec->cur - major) > LENGTH_EXT8)
		832	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
758	{	833	{
759	++dec->cur;	834	++dec->cur;
760	break;	835	break;
761	}	836	}
		837	else
		838	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
762		839
763	SV *sv2 = decode_sv (dec);	840	STRLEN len = decode_uint (dec);
764	sv_catsv (sv, sv2);	841
		842	WANT (len);
		843	sv_catpvn (sv, dec->cur, len);
		844	dec->cur += len;
765	}	845	}
766	}	846	}
767	else	847	else
768	{	848	{
769	STRLEN len = decode_uint (dec);	849	STRLEN len = decode_uint (dec);
770		850
771	WANT (len);	851	WANT (len);
772	sv = newSVpvn (dec->cur, len);	852	sv = newSVpvn (dec->cur, len);
773	dec->cur += len;	853	dec->cur += len;
		854
		855	if (ecb_expect_false (dec->stringref)
		856	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		857	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
774	}	858	}
775		859
776	if (utf8)	860	if (utf8)
		861	{
		862	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		863	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		864	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		865
777	SvUTF8_on (sv);	866	SvUTF8_on (sv);
		867	}
778		868
779	return sv;	869	return sv;
780		870
781	fail:	871	fail:
		872	SvREFCNT_dec (sv);
		873	return &PL_sv_undef;
		874	}
		875
		876	static SV *
		877	decode_tagged (dec_t *dec)
		878	{
		879	SV *sv = 0;
		880	UV tag = decode_uint (dec);
		881
		882	WANT (1);
		883
		884	switch (tag)
		885	{
		886	case CBOR_TAG_MAGIC:
		887	sv = decode_sv (dec);
		888	break;
		889
		890	case CBOR_TAG_INDIRECTION:
		891	sv = newRV_noinc (decode_sv (dec));
		892	break;
		893
		894	case CBOR_TAG_STRINGREF_NAMESPACE:
		895	{
		896	ENTER; SAVETMPS;
		897
		898	SAVESPTR (dec->stringref);
		899	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		900
		901	sv = decode_sv (dec);
		902
		903	FREETMPS; LEAVE;
		904	}
		905	break;
		906
		907	case CBOR_TAG_STRINGREF:
		908	{
		909	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		910	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		911
		912	UV idx = decode_uint (dec);
		913
		914	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		915	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		916
		917	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		918	}
		919	break;
		920
		921	case CBOR_TAG_VALUE_SHAREABLE:
		922	{
		923	if (ecb_expect_false (!dec->shareable))
		924	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		925
		926	if (dec->cbor.flags & F_ALLOW_CYCLES)
		927	{
		928	sv = newSV (0);
		929	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		930
		931	SV *osv = decode_sv (dec);
		932	sv_setsv (sv, osv);
		933	SvREFCNT_dec_NN (osv);
		934	}
		935	else
		936	{
		937	av_push (dec->shareable, &PL_sv_undef);
		938	int idx = AvFILLp (dec->shareable);
		939	sv = decode_sv (dec);
		940	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		941	}
		942	}
		943	break;
		944
		945	case CBOR_TAG_VALUE_SHAREDREF:
		946	{
		947	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		948	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		949
		950	UV idx = decode_uint (dec);
		951
		952	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		953	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		954
		955	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		956
		957	if (sv == &PL_sv_undef)
		958	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		959	}
		960	break;
		961
		962	case CBOR_TAG_PERL_OBJECT:
		963	{
		964	sv = decode_sv (dec);
		965
		966	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		967	ERR ("corrupted CBOR data (non-array perl object)");
		968
		969	AV *av = (AV *)SvRV (sv);
		970	int len = av_len (av) + 1;
		971	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		972
		973	if (!stash)
		974	ERR ("cannot decode perl-object (package does not exist)");
		975
		976	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		977
		978	if (!method)
		979	ERR ("cannot decode perl-object (package does not have a THAW method)");
		980
		981	dSP;
		982
		983	ENTER; SAVETMPS; PUSHMARK (SP);
		984	EXTEND (SP, len + 1);
		985	// we re-bless the reference to get overload and other niceties right
		986	PUSHs (*av_fetch (av, 0, 1));
		987	PUSHs (sv_cbor);
		988
		989	int i;
		990
		991	for (i = 1; i < len; ++i)
		992	PUSHs (*av_fetch (av, i, 1));
		993
		994	PUTBACK;
		995	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		996	SPAGAIN;
		997
		998	if (SvTRUE (ERRSV))
		999	{
		1000	FREETMPS; LEAVE;
		1001	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1002	}
		1003
		1004	SvREFCNT_dec (sv);
		1005	sv = SvREFCNT_inc (POPs);
		1006
		1007	PUTBACK;
		1008
		1009	FREETMPS; LEAVE;
		1010	}
		1011	break;
		1012
		1013	default:
		1014	{
		1015	sv = decode_sv (dec);
		1016
		1017	dSP;
		1018	ENTER; SAVETMPS; PUSHMARK (SP);
		1019	EXTEND (SP, 2);
		1020	PUSHs (newSVuv (tag));
		1021	PUSHs (sv);
		1022
		1023	PUTBACK;
		1024	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1025	SPAGAIN;
		1026
		1027	if (SvTRUE (ERRSV))
		1028	{
		1029	FREETMPS; LEAVE;
		1030	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1031	}
		1032
		1033	if (count)
		1034	{
		1035	SvREFCNT_dec (sv);
		1036	sv = SvREFCNT_inc (POPs);
		1037	}
		1038	else
		1039	{
		1040	AV *av = newAV ();
		1041	av_push (av, newSVuv (tag));
		1042	av_push (av, sv);
		1043
		1044	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1045	? cbor_tagged_stash
		1046	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1047	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1048	}
		1049
		1050	PUTBACK;
		1051
		1052	FREETMPS; LEAVE;
		1053	}
		1054	break;
		1055	}
		1056
		1057	return sv;
		1058
		1059	fail:
		1060	SvREFCNT_dec (sv);
782	return &PL_sv_undef;	1061	return &PL_sv_undef;
783	}	1062	}
784		1063
785	static SV *	1064	static SV *
786	decode_sv (dec_t *dec)	1065	decode_sv (dec_t *dec)
787	{	1066	{
788	WANT (1);	1067	WANT (1);
789		1068
790	switch (*dec->cur >> 5)	1069	switch (*dec->cur >> MAJOR_SHIFT)
791	{	1070	{
792	case 0: // unsigned int	1071	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
793	//TODO: 64 bit values on 3 2bit perls	1072	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
794	return newSVuv (decode_uint (dec));	1073	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
795	case 1: // negative int	1074	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
796	return newSViv (-1 - (IV)decode_uint (dec));	1075	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
797	case 2: // octet string	1076	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
798	return decode_str (dec, 0);	1077	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
799	case 3: // utf-8 string	1078
800	return decode_str (dec, 1);	1079	case MAJOR_MISC >> MAJOR_SHIFT:
801	case 4: // array
802	return decode_av (dec);
803	case 5: // map
804	return decode_hv (dec);
805	case 6: // tag
806	abort ();
807	break;
808	case 7: // misc
809	switch (*dec->cur++ & 31)	1080	switch (*dec->cur++ & MINOR_MASK)
810	{	1081	{
811	case 20:	1082	case SIMPLE_FALSE:
812	#if CBOR_SLOW	1083	#if CBOR_SLOW
813	cbor_false = get_bool ("CBOR::XS::false");	1084	types_false = get_bool ("Types::Serialiser::false");
814	#endif	1085	#endif
815	return newSVsv (cbor_false);	1086	return newSVsv (types_false);
816	case 21:	1087	case SIMPLE_TRUE:
817	#if CBOR_SLOW	1088	#if CBOR_SLOW
818	cbor_true = get_bool ("CBOR::XS::true");	1089	types_true = get_bool ("Types::Serialiser::true");
819	#endif	1090	#endif
820	return newSVsv (cbor_true);	1091	return newSVsv (types_true);
821	case 22:	1092	case SIMPLE_NULL:
822	return newSVsv (&PL_sv_undef);	1093	return newSVsv (&PL_sv_undef);
		1094	case SIMPLE_UNDEF:
		1095	#if CBOR_SLOW
		1096	types_error = get_bool ("Types::Serialiser::error");
		1097	#endif
		1098	return newSVsv (types_error);
823		1099
824	case 25:	1100	case MISC_FLOAT16:
825	{	1101	{
826	WANT (2);	1102	WANT (2);
827		1103
828	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1104	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
829	dec->cur += 2;	1105	dec->cur += 2;
830		1106
831	return newSVnv (ecb_binary16_to_float (fp));	1107	return newSVnv (ecb_binary16_to_float (fp));
832	}	1108	}
833		1109
834	case 26:	1110	case MISC_FLOAT32:
835	{	1111	{
836	uint32_t fp;	1112	uint32_t fp;
837	WANT (4);	1113	WANT (4);
838	memcpy (&fp, dec->cur, 4);	1114	memcpy (&fp, dec->cur, 4);
839	dec->cur += 4;	1115	dec->cur += 4;
…		…
842	fp = ecb_bswap32 (fp);	1118	fp = ecb_bswap32 (fp);
843		1119
844	return newSVnv (ecb_binary32_to_float (fp));	1120	return newSVnv (ecb_binary32_to_float (fp));
845	}	1121	}
846		1122
847	case 27:	1123	case MISC_FLOAT64:
848	{	1124	{
849	uint64_t fp;	1125	uint64_t fp;
850	WANT (8);	1126	WANT (8);
851	memcpy (&fp, dec->cur, 8);	1127	memcpy (&fp, dec->cur, 8);
852	dec->cur += 8;	1128	dec->cur += 8;
…		…
855	fp = ecb_bswap64 (fp);	1131	fp = ecb_bswap64 (fp);
856		1132
857	return newSVnv (ecb_binary64_to_double (fp));	1133	return newSVnv (ecb_binary64_to_double (fp));
858	}	1134	}
859		1135
860	// 0..19 unassigned	1136	// 0..19 unassigned simple
861	// 24 reserved + unassigned (reserved values are not encodable)	1137	// 24 reserved + unassigned (reserved values are not encodable)
862	default:	1138	default:
863	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1139	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");
864	}	1140	}
865		1141
866	break;	1142	break;
867	}	1143	}
868	#if 0
869	switch (*dec->cur)
870	{
871	//case '"': ++dec->cur; return decode_str (dec);
872	case '[': ++dec->cur; return decode_av (dec);
873	case '{': ++dec->cur; return decode_hv (dec);
874
875	case '-':
876	case '0': case '1': case '2': case '3': case '4':
877	case '5': case '6': case '7': case '8': case '9':
878	//TODO return decode_num (dec);
879
880	case 't':
881	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
882	{
883	dec->cur += 4;
884	#if CBOR_SLOW
885	cbor_true = get_bool ("CBOR::XS::true");
886	#endif
887	return newSVsv (cbor_true);
888	}
889	else
890	ERR ("'true' expected");
891
892	break;
893
894	case 'f':
895	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
896	{
897	dec->cur += 5;
898	#if CBOR_SLOW
899	cbor_false = get_bool ("CBOR::XS::false");
900	#endif
901	return newSVsv (cbor_false);
902	}
903	else
904	ERR ("'false' expected");
905
906	break;
907
908	case 'n':
909	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
910	{
911	dec->cur += 4;
912	return newSVsv (&PL_sv_undef);
913	}
914	else
915	ERR ("'null' expected");
916
917	break;
918
919	default:
920	ERR ("malformed CBOR string, neither array, object, number, string or atom");
921	break;
922	}
923	#endif
924		1144
925	fail:	1145	fail:
926	return &PL_sv_undef;	1146	return &PL_sv_undef;
927	}	1147	}
928		1148
929	static SV *	1149	static SV *
930	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1150	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
931	{	1151	{
932	dec_t dec;	1152	dec_t dec = { };
933	SV *sv;	1153	SV *sv;
		1154	STRLEN len;
		1155	char *data = SvPVbyte (string, len);
934		1156
935	/* work around bugs in 5.10 where manipulating magic values
936	* makes perl ignore the magic in subsequent accesses.
937	* also make a copy of non-PV values, to get them into a clean
938	* state (SvPV should do that, but it's buggy, see below).
939	*/
940	/*SvGETMAGIC (string);*/
941	if (SvMAGICAL (string) || !SvPOK (string))
942	string = sv_2mortal (newSVsv (string));
943
944	SvUPGRADE (string, SVt_PV);
945
946	/* work around a bug in perl 5.10, which causes SvCUR to fail an
947	* assertion with -DDEBUGGING, although SvCUR is documented to
948	* return the xpv_cur field which certainly exists after upgrading.
949	* according to nicholas clark, calling SvPOK fixes this.
950	* But it doesn't fix it, so try another workaround, call SvPV_nolen
951	* and hope for the best.
952	* Damnit, SvPV_nolen still trips over yet another assertion. This
953	* assertion business is seriously broken, try yet another workaround
954	* for the broken -DDEBUGGING.
955	*/
956	{
957	#ifdef DEBUGGING
958	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
959	#else
960	STRLEN offset = SvCUR (string);
961	#endif
962
963	if (offset > cbor->max_size && cbor->max_size)	1157	if (len > cbor->max_size && cbor->max_size)
964	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1158	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
965	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1159	(unsigned long)len, (unsigned long)cbor->max_size);
966	}
967
968	sv_utf8_downgrade (string, 0);
969		1160
970	dec.cbor = *cbor;	1161	dec.cbor = *cbor;
971	dec.cur = (U8 *)SvPVX (string);	1162	dec.cur = (U8 *)data;
972	dec.end = (U8 *)SvEND (string);	1163	dec.end = (U8 *)data + len;
973	dec.err = 0;
974	dec.depth = 0;
975
976	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
977	;//TODO dec.cbor.flags |= F_HOOK;
978		1164
979	sv = decode_sv (&dec);	1165	sv = decode_sv (&dec);
980		1166
981	if (offset_return)	1167	if (offset_return)
982	*offset_return = dec.cur;	1168	*offset_return = dec.cur;
…		…
986	dec.err = "garbage after CBOR object";	1172	dec.err = "garbage after CBOR object";
987		1173
988	if (dec.err)	1174	if (dec.err)
989	{	1175	{
990	SvREFCNT_dec (sv);	1176	SvREFCNT_dec (sv);
991	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1177	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
992	}	1178	}
993		1179
994	sv = sv_2mortal (sv);	1180	sv = sv_2mortal (sv);
995		1181
996	return sv;	1182	return sv;
…		…
1002	MODULE = CBOR::XS PACKAGE = CBOR::XS	1188	MODULE = CBOR::XS PACKAGE = CBOR::XS
1003		1189
1004	BOOT:	1190	BOOT:
1005	{	1191	{
1006	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1192	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1007	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1193	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1008		1194
1009	cbor_true = get_bool ("CBOR::XS::true");	1195	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1010	cbor_false = get_bool ("CBOR::XS::false");	1196	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1197
		1198	types_true = get_bool ("Types::Serialiser::true" );
		1199	types_false = get_bool ("Types::Serialiser::false");
		1200	types_error = get_bool ("Types::Serialiser::error");
		1201
		1202	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1203
		1204	sv_cbor = newSVpv ("CBOR", 0);
		1205	SvREADONLY_on (sv_cbor);
1011	}	1206	}
1012		1207
1013	PROTOTYPES: DISABLE	1208	PROTOTYPES: DISABLE
1014		1209
1015	void CLONE (...)	1210	void CLONE (...)
1016	CODE:	1211	CODE:
1017	cbor_stash = 0;	1212	cbor_stash = 0;
		1213	cbor_tagged_stash = 0;
		1214	types_error_stash = 0;
1018	cbor_boolean_stash = 0;	1215	types_boolean_stash = 0;
1019		1216
1020	void new (char *klass)	1217	void new (char *klass)
1021	PPCODE:	1218	PPCODE:
1022	{	1219	{
1023	SV *pv = NEWSV (0, sizeof (CBOR));	1220	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1031		1228
1032	void shrink (CBOR *self, int enable = 1)	1229	void shrink (CBOR *self, int enable = 1)
1033	ALIAS:	1230	ALIAS:
1034	shrink = F_SHRINK	1231	shrink = F_SHRINK
1035	allow_unknown = F_ALLOW_UNKNOWN	1232	allow_unknown = F_ALLOW_UNKNOWN
		1233	allow_sharing = F_ALLOW_SHARING
		1234	allow_cycles = F_ALLOW_CYCLES
		1235	pack_strings = F_PACK_STRINGS
		1236	validate_utf8 = F_VALIDATE_UTF8
1036	PPCODE:	1237	PPCODE:
1037	{	1238	{
1038	if (enable)	1239	if (enable)
1039	self->flags |= ix;	1240	self->flags |= ix;
1040	else	1241	else
…		…
1045		1246
1046	void get_shrink (CBOR *self)	1247	void get_shrink (CBOR *self)
1047	ALIAS:	1248	ALIAS:
1048	get_shrink = F_SHRINK	1249	get_shrink = F_SHRINK
1049	get_allow_unknown = F_ALLOW_UNKNOWN	1250	get_allow_unknown = F_ALLOW_UNKNOWN
		1251	get_allow_sharing = F_ALLOW_SHARING
		1252	get_allow_cycles = F_ALLOW_CYCLES
		1253	get_pack_strings = F_PACK_STRINGS
		1254	get_validate_utf8 = F_VALIDATE_UTF8
1050	PPCODE:	1255	PPCODE:
1051	XPUSHs (boolSV (self->flags & ix));	1256	XPUSHs (boolSV (self->flags & ix));
1052		1257
1053	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1258	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1054	PPCODE:	1259	PPCODE:
…		…
1070	CODE:	1275	CODE:
1071	RETVAL = self->max_size;	1276	RETVAL = self->max_size;
1072	OUTPUT:	1277	OUTPUT:
1073	RETVAL	1278	RETVAL
1074		1279
1075	#if 0 //TODO	1280	void filter (CBOR *self, SV *filter = 0)
1076
1077	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1078	PPCODE:	1281	PPCODE:
1079	{
1080	SvREFCNT_dec (self->cb_object);	1282	SvREFCNT_dec (self->filter);
1081	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1283	self->filter = filter ? newSVsv (filter) : filter;
1082
1083	XPUSHs (ST (0));	1284	XPUSHs (ST (0));
1084	}
1085		1285
1086	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1286	SV *get_filter (CBOR *self)
1087	PPCODE:	1287	CODE:
1088	{	1288	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1089	if (!self->cb_sk_object)	1289	OUTPUT:
1090	self->cb_sk_object = newHV ();	1290	RETVAL
1091
1092	if (SvOK (cb))
1093	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1094	else
1095	{
1096	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1097
1098	if (!HvKEYS (self->cb_sk_object))
1099	{
1100	SvREFCNT_dec (self->cb_sk_object);
1101	self->cb_sk_object = 0;
1102	}
1103	}
1104
1105	XPUSHs (ST (0));
1106	}
1107
1108	#endif
1109		1291
1110	void encode (CBOR *self, SV *scalar)	1292	void encode (CBOR *self, SV *scalar)
1111	PPCODE:	1293	PPCODE:
1112	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1294	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1113	XPUSHs (scalar);	1295	XPUSHs (scalar);
…		…
1127	PUSHs (sv);	1309	PUSHs (sv);
1128	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1310	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1129	}	1311	}
1130		1312
1131	void DESTROY (CBOR *self)	1313	void DESTROY (CBOR *self)
1132	CODE:	1314	PPCODE:
1133	SvREFCNT_dec (self->cb_sk_object);	1315	cbor_free (self);
1134	SvREFCNT_dec (self->cb_object);
1135		1316
1136	PROTOTYPES: ENABLE	1317	PROTOTYPES: ENABLE
1137		1318
1138	void encode_cbor (SV *scalar)	1319	void encode_cbor (SV *scalar)
		1320	ALIAS:
		1321	encode_cbor = 0
		1322	encode_cbor_sharing = F_ALLOW_SHARING
1139	PPCODE:	1323	PPCODE:
1140	{	1324	{
1141	CBOR cbor;	1325	CBOR cbor;
1142	cbor_init (&cbor);	1326	cbor_init (&cbor);
		1327	cbor.flags |= ix;
1143	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1328	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1144	XPUSHs (scalar);	1329	XPUSHs (scalar);
1145	}	1330	}
1146		1331
1147	void decode_cbor (SV *cborstr)	1332	void decode_cbor (SV *cborstr)

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