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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.4 by root, Sat Oct 26 21:06:37 2013 UTC vs.
Revision 1.39 by root, Sun Dec 1 14:45:03 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	// compatibility with perl <5.18
		15	#ifndef HvNAMELEN_get
		16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		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
		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
14	#define F_SHRINK 0x00000200UL	99	#define F_SHRINK 0x00000001UL
15	#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
16		105
17	#define INIT_SIZE 32 // initial scalar size to be allocated	106	#define INIT_SIZE 32 // initial scalar size to be allocated
18		107
19	#define SB do {	108	#define SB do {
20	#define SE } while (0)	109	#define SE } while (0)
21
22	#if __GNUC__ >= 3
23	# define expect(expr,value) __builtin_expect ((expr), (value))
24	# define INLINE static inline
25	#else
26	# define expect(expr,value) (expr)
27	# define INLINE static
28	#endif
29
30	#define expect_false(expr) expect ((expr) != 0, 0)
31	#define expect_true(expr) expect ((expr) != 0, 1)
32		110
33	#define IN_RANGE_INC(type,val,beg,end) \	111	#define IN_RANGE_INC(type,val,beg,end) \
34	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \	112	((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \
35	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))	113	<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg)))
36		114
…		…
42	#else	120	#else
43	# define CBOR_SLOW 0	121	# define CBOR_SLOW 0
44	# define CBOR_STASH cbor_stash	122	# define CBOR_STASH cbor_stash
45	#endif	123	#endif
46		124
47	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::
48	static SV *cbor_true, *cbor_false;	126	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
49		127
50	typedef struct {	128	typedef struct {
51	U32 flags;	129	U32 flags;
52	U32 max_depth;	130	U32 max_depth;
53	STRLEN max_size;	131	STRLEN max_size;
54		132	SV *filter;
55	SV *cb_object;
56	HV *cb_sk_object;
57	} CBOR;	133	} CBOR;
58		134
59	INLINE void	135	ecb_inline void
60	cbor_init (CBOR *cbor)	136	cbor_init (CBOR *cbor)
61	{	137	{
62	Zero (cbor, 1, CBOR);	138	Zero (cbor, 1, CBOR);
63	cbor->max_depth = 512;	139	cbor->max_depth = 512;
64	}	140	}
65		141
		142	ecb_inline void
		143	cbor_free (CBOR *cbor)
		144	{
		145	SvREFCNT_dec (cbor->filter);
		146	}
		147
66	/////////////////////////////////////////////////////////////////////////////	148	/////////////////////////////////////////////////////////////////////////////
67	// utility functions	149	// utility functions
68		150
69	INLINE SV *	151	ecb_inline SV *
70	get_bool (const char *name)	152	get_bool (const char *name)
71	{	153	{
72	SV *sv = get_sv (name, 1);	154	SV *sv = get_sv (name, 1);
73		155
74	SvREADONLY_on (sv);	156	SvREADONLY_on (sv);
75	SvREADONLY_on (SvRV (sv));	157	SvREADONLY_on (SvRV (sv));
76		158
77	return sv;	159	return sv;
78	}	160	}
79		161
80	INLINE void	162	ecb_inline void
81	shrink (SV *sv)	163	shrink (SV *sv)
82	{	164	{
83	sv_utf8_downgrade (sv, 1);	165	sv_utf8_downgrade (sv, 1);
84		166
85	if (SvLEN (sv) > SvCUR (sv) + 1)	167	if (SvLEN (sv) > SvCUR (sv) + 1)
…		…
90	SvPV_renew (sv, SvCUR (sv) + 1);	172	SvPV_renew (sv, SvCUR (sv) + 1);
91	#endif	173	#endif
92	}	174	}
93	}	175	}
94		176
95	/////////////////////////////////////////////////////////////////////////////	177	// minimum length of a string to be registered for stringref
96	// fp hell	178	ecb_inline int
97		179	minimum_string_length (UV idx)
98	//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	}
99		191
100	/////////////////////////////////////////////////////////////////////////////	192	/////////////////////////////////////////////////////////////////////////////
101	// encoder	193	// encoder
102		194
103	// structure used for encoding CBOR	195	// structure used for encoding CBOR
…		…
106	char *cur; // SvPVX (sv) + current output position	198	char *cur; // SvPVX (sv) + current output position
107	char *end; // SvEND (sv)	199	char *end; // SvEND (sv)
108	SV *sv; // result scalar	200	SV *sv; // result scalar
109	CBOR cbor;	201	CBOR cbor;
110	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;
111	} enc_t;	207	} enc_t;
112		208
113	INLINE void	209	ecb_inline void
114	need (enc_t *enc, STRLEN len)	210	need (enc_t *enc, STRLEN len)
115	{	211	{
116	if (expect_false (enc->cur + len >= enc->end))	212	if (ecb_expect_false (enc->cur + len >= enc->end))
117	{	213	{
118	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	214	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
119	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	215	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
120	enc->cur = SvPVX (enc->sv) + cur;	216	enc->cur = SvPVX (enc->sv) + cur;
121	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	217	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
122	}	218	}
123	}	219	}
124		220
125	INLINE void	221	ecb_inline void
126	encode_ch (enc_t *enc, char ch)	222	encode_ch (enc_t *enc, char ch)
127	{	223	{
128	need (enc, 1);	224	need (enc, 1);
129	*enc->cur++ = ch;	225	*enc->cur++ = ch;
130	}	226	}
…		…
132	static void	228	static void
133	encode_uint (enc_t *enc, int major, UV len)	229	encode_uint (enc_t *enc, int major, UV len)
134	{	230	{
135	need (enc, 9);	231	need (enc, 9);
136		232
137	if (len < 24)	233	if (ecb_expect_true (len < LENGTH_EXT1))
138	*enc->cur++ = major | len;	234	*enc->cur++ = major | len;
139	else if (len <= 0xff)	235	else if (ecb_expect_true (len <= 0xffU))
140	{	236	{
141	*enc->cur++ = major | 24;	237	*enc->cur++ = major | LENGTH_EXT1;
142	*enc->cur++ = len;	238	*enc->cur++ = len;
143	}	239	}
144	else if (len <= 0xffff)	240	else if (len <= 0xffffU)
145	{	241	{
146	*enc->cur++ = major | 25;	242	*enc->cur++ = major | LENGTH_EXT2;
147	*enc->cur++ = len >> 8;	243	*enc->cur++ = len >> 8;
148	*enc->cur++ = len;	244	*enc->cur++ = len;
149	}	245	}
150	else if (len <= 0xffffffff)	246	else if (len <= 0xffffffffU)
151	{	247	{
152	*enc->cur++ = major | 26;	248	*enc->cur++ = major | LENGTH_EXT4;
153	*enc->cur++ = len >> 24;	249	*enc->cur++ = len >> 24;
154	*enc->cur++ = len >> 16;	250	*enc->cur++ = len >> 16;
155	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
156	*enc->cur++ = len;	252	*enc->cur++ = len;
157	}	253	}
158	else	254	else
159	{	255	{
160	*enc->cur++ = major | 27;	256	*enc->cur++ = major | LENGTH_EXT8;
161	*enc->cur++ = len >> 56;	257	*enc->cur++ = len >> 56;
162	*enc->cur++ = len >> 48;	258	*enc->cur++ = len >> 48;
163	*enc->cur++ = len >> 40;	259	*enc->cur++ = len >> 40;
164	*enc->cur++ = len >> 32;	260	*enc->cur++ = len >> 32;
165	*enc->cur++ = len >> 24;	261	*enc->cur++ = len >> 24;
…		…
167	*enc->cur++ = len >> 8;	263	*enc->cur++ = len >> 8;
168	*enc->cur++ = len;	264	*enc->cur++ = len;
169	}	265	}
170	}	266	}
171		267
172	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
173	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	275	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)
174	{	276	{
175	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	277	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
176	need (enc, len);	278	need (enc, len);
177	memcpy (enc->cur, str, len);	279	memcpy (enc->cur, str, len);
178	enc->cur += len;	280	enc->cur += len;
179	}	281	}
180		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
181	static void encode_sv (enc_t *enc, SV *sv);	308	static void encode_sv (enc_t *enc, SV *sv);
182		309
183	static void	310	static void
184	encode_av (enc_t *enc, AV *av)	311	encode_av (enc_t *enc, AV *av)
185	{	312	{
…		…
188	if (enc->depth >= enc->cbor.max_depth)	315	if (enc->depth >= enc->cbor.max_depth)
189	croak (ERR_NESTING_EXCEEDED);	316	croak (ERR_NESTING_EXCEEDED);
190		317
191	++enc->depth;	318	++enc->depth;
192		319
193	encode_uint (enc, 0x80, len + 1);	320	encode_uint (enc, MAJOR_ARRAY, len + 1);
194		321
195	for (i = 0; i <= len; ++i)	322	for (i = 0; i <= len; ++i)
196	{	323	{
197	SV **svp = av_fetch (av, i, 0);	324	SV **svp = av_fetch (av, i, 0);
198	encode_sv (enc, svp ? *svp : &PL_sv_undef);	325	encode_sv (enc, svp ? *svp : &PL_sv_undef);
…		…
213		340
214	int pairs = hv_iterinit (hv);	341	int pairs = hv_iterinit (hv);
215	int mg = SvMAGICAL (hv);	342	int mg = SvMAGICAL (hv);
216		343
217	if (mg)	344	if (mg)
218	encode_ch (enc, 0xa0 | 31);	345	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
219	else	346	else
220	encode_uint (enc, 0xa0, pairs);	347	encode_uint (enc, MAJOR_MAP, pairs);
221		348
222	while ((he = hv_iternext (hv)))	349	while ((he = hv_iternext (hv)))
223	{	350	{
224	if (HeKLEN (he) == HEf_SVKEY)	351	if (HeKLEN (he) == HEf_SVKEY)
225	encode_sv (enc, HeSVKEY (he));	352	encode_sv (enc, HeSVKEY (he));
226	else	353	else
227	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	354	encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));
228		355
229	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));
230	}	357	}
231		358
232	if (mg)	359	if (mg)
233	encode_ch (enc, 0xe0 | 31);	360	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
234		361
235	--enc->depth;	362	--enc->depth;
236	}	363	}
237		364
238	// encode objects, arrays and special \0=false and \1=true values.	365	// encode objects, arrays and special \0=false and \1=true values.
239	static void	366	static void
240	encode_rv (enc_t *enc, SV *sv)	367	encode_rv (enc_t *enc, SV *sv)
241	{	368	{
242	svtype svt;
243
244	SvGETMAGIC (sv);	369	SvGETMAGIC (sv);
		370
245	svt = SvTYPE (sv);	371	svtype svt = SvTYPE (sv);
246		372
247	if (expect_false (SvOBJECT (sv)))	373	if (ecb_expect_false (SvOBJECT (sv)))
248	{	374	{
249	HV *stash = !CBOR_SLOW || cbor_boolean_stash	375	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
250	? 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
251	: gv_stashpv ("CBOR::XS::Boolean", 1);	383	: gv_stashpv ("CBOR::XS::Tagged" , 1);
252		384
253	if (SvSTASH (sv) == stash)	385	HV *stash = SvSTASH (sv);
254	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	}
255	else	423	else
256	{	424	{
257	#if 0 //TODO	425	sv_setuv (*svp, enc->shareable_idx);
258	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)))
259	{	437	{
		438	dSP;
		439
		440	ENTER; SAVETMPS; PUSHMARK (SP);
260	// 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
261	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
262
263	if (to_cbor)
264	{
265	dSP;
266
267	ENTER; SAVETMPS; PUSHMARK (SP);
268	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	442	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
269		443
270	// calling with G_SCALAR ensures that we always get a 1 return value
271	PUTBACK;	444	PUTBACK;
		445	// G_SCALAR ensures that return value is 1
272	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	446	call_sv ((SV *)GvCV (method), G_SCALAR);
273	SPAGAIN;	447	SPAGAIN;
274		448
275	// catch this surprisingly common error	449	// catch this surprisingly common error
276	if (SvROK (TOPs) && SvRV (TOPs) == sv)	450	if (SvROK (TOPs) && SvRV (TOPs) == sv)
277	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));
278		452
279	sv = POPs;
280	PUTBACK;
281
282	encode_sv (enc, sv);	453	encode_sv (enc, POPs);
283		454
		455	PUTBACK;
		456
284	FREETMPS; LEAVE;	457	FREETMPS; LEAVE;
285	}
286	else if (enc->cbor.flags & F_ALLOW_BLESSED)
287	encode_str (enc, "null", 4, 0);
288	else
289	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it",
290	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
291	}	458	}
292	else if (enc->cbor.flags & F_ALLOW_BLESSED)	459	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
293	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	}
294	else	488	else
295	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",
296	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	490	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
297	#endif
298	}
299	}	491	}
300	else if (svt == SVt_PVHV)	492	else if (svt == SVt_PVHV)
301	encode_hv (enc, (HV *)sv);	493	encode_hv (enc, (HV *)sv);
302	else if (svt == SVt_PVAV)	494	else if (svt == SVt_PVAV)
303	encode_av (enc, (AV *)sv);	495	encode_av (enc, (AV *)sv);
304	else if (svt < SVt_PVAV)
305	{
306	STRLEN len = 0;
307	char *pv = svt ? SvPV (sv, len) : 0;
308
309	if (len == 1 && *pv == '1')
310	encode_ch (enc, 0xe0 | 21);
311	else if (len == 1 && *pv == '0')
312	encode_ch (enc, 0xe0 | 20);
313	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
314	encode_ch (enc, 0xe0 | 23);
315	else
316	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
317	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
318	}
319	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
320	encode_ch (enc, 0xe0 | 23);
321	else	496	else
322	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	497	{
323	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	498	encode_tag (enc, CBOR_TAG_INDIRECTION);
		499	encode_sv (enc, sv);
		500	}
324	}	501	}
325		502
326	static void	503	static void
327	encode_nv (enc_t *enc, SV *sv)	504	encode_nv (enc_t *enc, SV *sv)
328	{	505	{
329	double nv = SvNVX (sv);	506	double nv = SvNVX (sv);
330		507
331	need (enc, 9);	508	need (enc, 9);
332		509
333	if (expect_false (nv == (U32)nv))	510	if (ecb_expect_false (nv == (NV)(U32)nv))
334	encode_uint (enc, 0x00, (U32)nv);	511	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
335	//TODO: maybe I32?	512	//TODO: maybe I32?
336	else if (expect_false (nv == (float)nv))	513	else if (ecb_expect_false (nv == (float)nv))
337	{	514	{
338	uint32_t fp = ecb_float_to_binary32 (nv);	515	uint32_t fp = ecb_float_to_binary32 (nv);
339		516
340	*enc->cur++ = 0xe0 | 26;	517	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
341		518
342	if (!ecb_big_endian ())	519	if (!ecb_big_endian ())
343	fp = ecb_bswap32 (fp);	520	fp = ecb_bswap32 (fp);
344		521
345	memcpy (enc->cur, &fp, 4);	522	memcpy (enc->cur, &fp, 4);
…		…
347	}	524	}
348	else	525	else
349	{	526	{
350	uint64_t fp = ecb_double_to_binary64 (nv);	527	uint64_t fp = ecb_double_to_binary64 (nv);
351		528
352	*enc->cur++ = 0xe0 | 27;	529	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
353		530
354	if (!ecb_big_endian ())	531	if (!ecb_big_endian ())
355	fp = ecb_bswap64 (fp);	532	fp = ecb_bswap64 (fp);
356		533
357	memcpy (enc->cur, &fp, 8);	534	memcpy (enc->cur, &fp, 8);
…		…
366		543
367	if (SvPOKp (sv))	544	if (SvPOKp (sv))
368	{	545	{
369	STRLEN len;	546	STRLEN len;
370	char *str = SvPV (sv, len);	547	char *str = SvPV (sv, len);
371	encode_str (enc, SvUTF8 (sv), str, len);	548	encode_strref (enc, SvUTF8 (sv), str, len);
372	}	549	}
373	else if (SvNOKp (sv))	550	else if (SvNOKp (sv))
374	encode_nv (enc, sv);	551	encode_nv (enc, sv);
375	else if (SvIOKp (sv))	552	else if (SvIOKp (sv))
376	{	553	{
377	if (SvIsUV (sv))	554	if (SvIsUV (sv))
378	encode_uint (enc, 0x00, SvUVX (sv));	555	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
379	else if (SvIVX (sv) >= 0)	556	else if (SvIVX (sv) >= 0)
380	encode_uint (enc, 0x00, SvIVX (sv));	557	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
381	else	558	else
382	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	559	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
383	}	560	}
384	else if (SvROK (sv))	561	else if (SvROK (sv))
385	encode_rv (enc, SvRV (sv));	562	encode_rv (enc, SvRV (sv));
386	else if (!SvOK (sv))	563	else if (!SvOK (sv))
387	encode_ch (enc, 0xe0 | 22);	564	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
388	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	565	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
389	encode_ch (enc, 0xe0 | 23);	566	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
390	else	567	else
391	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",
392	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	569	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
393	}	570	}
394		571
395	static SV *	572	static SV *
396	encode_cbor (SV *scalar, CBOR *cbor)	573	encode_cbor (SV *scalar, CBOR *cbor)
397	{	574	{
398	enc_t enc;	575	enc_t enc = { };
399		576
400	enc.cbor = *cbor;	577	enc.cbor = *cbor;
401	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	578	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
402	enc.cur = SvPVX (enc.sv);	579	enc.cur = SvPVX (enc.sv);
403	enc.end = SvEND (enc.sv);	580	enc.end = SvEND (enc.sv);
404	enc.depth = 0;
405		581
406	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
407	encode_sv (&enc, scalar);	591	encode_sv (&enc, scalar);
408		592
409	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	593	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
410	*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
411		595
…		…
425	U8 *end; // end of input string	609	U8 *end; // end of input string
426	const char *err; // parse error, if != 0	610	const char *err; // parse error, if != 0
427	CBOR cbor;	611	CBOR cbor;
428	U32 depth; // recursion depth	612	U32 depth; // recursion depth
429	U32 maxdepth; // recursion depth limit	613	U32 maxdepth; // recursion depth limit
		614	AV *shareable;
		615	AV *stringref;
		616	SV *decode_tagged;
430	} dec_t;	617	} dec_t;
431		618
432	#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
433		620
434	#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")
435		622
436	#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)
437	#define DEC_DEC_DEPTH --dec->depth	624	#define DEC_DEC_DEPTH --dec->depth
438		625
439	static UV	626	static UV
440	decode_uint (dec_t *dec)	627	decode_uint (dec_t *dec)
441	{	628	{
442	switch (*dec->cur & 31)	629	U8 m = *dec->cur & MINOR_MASK;
443	{	630	++dec->cur;
444	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
445	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
446	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
447	return *dec->cur++ & 31;
448		631
449	case 24:	632	if (ecb_expect_true (m < LENGTH_EXT1))
		633	return m;
		634	else if (ecb_expect_true (m == LENGTH_EXT1))
		635	{
450	WANT (2);	636	WANT (1);
451	dec->cur += 2;	637	dec->cur += 1;
452	return dec->cur[-1];	638	return dec->cur[-1];
453		639	}
454	case 25:	640	else if (ecb_expect_true (m == LENGTH_EXT2))
		641	{
455	WANT (3);	642	WANT (2);
456	dec->cur += 3;	643	dec->cur += 2;
457	return (((UV)dec->cur[-2]) << 8)	644	return (((UV)dec->cur[-2]) << 8)
458	| ((UV)dec->cur[-1]);	645	| ((UV)dec->cur[-1]);
459		646	}
460	case 26:	647	else if (ecb_expect_true (m == LENGTH_EXT4))
		648	{
461	WANT (5);	649	WANT (4);
462	dec->cur += 5;	650	dec->cur += 4;
463	return (((UV)dec->cur[-4]) << 24)	651	return (((UV)dec->cur[-4]) << 24)
464	| (((UV)dec->cur[-3]) << 16)	652	| (((UV)dec->cur[-3]) << 16)
465	| (((UV)dec->cur[-2]) << 8)	653	| (((UV)dec->cur[-2]) << 8)
466	| ((UV)dec->cur[-1]);	654	| ((UV)dec->cur[-1]);
467		655	}
468	case 27:	656	else if (ecb_expect_true (m == LENGTH_EXT8))
		657	{
469	WANT (9);	658	WANT (8);
470	dec->cur += 9;	659	dec->cur += 8;
		660
		661	return
		662	#if UVSIZE < 8
		663	0
		664	#else
471	return (((UV)dec->cur[-8]) << 56)	665	(((UV)dec->cur[-8]) << 56)
472	| (((UV)dec->cur[-7]) << 48)	666	| (((UV)dec->cur[-7]) << 48)
473	| (((UV)dec->cur[-6]) << 40)	667	| (((UV)dec->cur[-6]) << 40)
474	| (((UV)dec->cur[-5]) << 32)	668	| (((UV)dec->cur[-5]) << 32)
		669	#endif
475	| (((UV)dec->cur[-4]) << 24)	670	| (((UV)dec->cur[-4]) << 24)
476	| (((UV)dec->cur[-3]) << 16)	671	| (((UV)dec->cur[-3]) << 16)
477	| (((UV)dec->cur[-2]) << 8)	672	| (((UV)dec->cur[-2]) << 8)
478	| ((UV)dec->cur[-1]);	673	| ((UV)dec->cur[-1]);
479		674	}
480	default:	675	else
481	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	676	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
482	}
483		677
484	fail:	678	fail:
485	return 0;	679	return 0;
486	}	680	}
487		681
…		…
492	{	686	{
493	AV *av = newAV ();	687	AV *av = newAV ();
494		688
495	DEC_INC_DEPTH;	689	DEC_INC_DEPTH;
496		690
497	if ((*dec->cur & 31) == 31)	691	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
498	{	692	{
499	++dec->cur;	693	++dec->cur;
500		694
501	for (;;)	695	for (;;)
502	{	696	{
503	WANT (1);	697	WANT (1);
504		698
505	if (*dec->cur == (0xe0 | 31))	699	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
506	{	700	{
507	++dec->cur;	701	++dec->cur;
508	break;	702	break;
509	}	703	}
510		704
…		…
513	}	707	}
514	else	708	else
515	{	709	{
516	int i, len = decode_uint (dec);	710	int i, len = decode_uint (dec);
517		711
		712	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
518	av_fill (av, len - 1);	713	av_fill (av, len - 1);
519		714
520	for (i = 0; i < len; ++i)	715	for (i = 0; i < len; ++i)
521	AvARRAY (av)[i] = decode_sv (dec);	716	AvARRAY (av)[i] = decode_sv (dec);
522	}	717	}
…		…
528	SvREFCNT_dec (av);	723	SvREFCNT_dec (av);
529	DEC_DEC_DEPTH;	724	DEC_DEC_DEPTH;
530	return &PL_sv_undef;	725	return &PL_sv_undef;
531	}	726	}
532		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
533	static SV *	772	static SV *
534	decode_hv (dec_t *dec)	773	decode_hv (dec_t *dec)
535	{	774	{
536	HV *hv = newHV ();	775	HV *hv = newHV ();
537		776
538	DEC_INC_DEPTH;	777	DEC_INC_DEPTH;
539		778
540	if ((*dec->cur & 31) == 31)	779	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
541	{	780	{
542	++dec->cur;	781	++dec->cur;
543		782
544	for (;;)	783	for (;;)
545	{	784	{
546	WANT (1);	785	WANT (1);
547		786
548	if (*dec->cur == (0xe0 | 31))	787	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
549	{	788	{
550	++dec->cur;	789	++dec->cur;
551	break;	790	break;
552	}	791	}
553		792
554	SV *k = decode_sv (dec);	793	decode_he (dec, hv);
555	SV *v = decode_sv (dec);
556
557	hv_store_ent (hv, k, v, 0);
558	}	794	}
559	}	795	}
560	else	796	else
561	{	797	{
562	int len = decode_uint (dec);	798	int pairs = decode_uint (dec);
563		799
564	while (len--)	800	while (pairs--)
565	{	801	decode_he (dec, hv);
566	SV *k = decode_sv (dec);
567	SV *v = decode_sv (dec);
568
569	hv_store_ent (hv, k, v, 0);
570	}
571	}	802	}
572		803
573	DEC_DEC_DEPTH;	804	DEC_DEC_DEPTH;
574	return newRV_noinc ((SV *)hv);	805	return newRV_noinc ((SV *)hv);
575
576	#if 0
577	SV *sv;
578	HV *hv = newHV ();
579
580	DEC_INC_DEPTH;
581	decode_ws (dec);
582
583	for (;;)
584	{
585	// heuristic: assume that
586	// a) decode_str + hv_store_ent are abysmally slow.
587	// b) most hash keys are short, simple ascii text.
588	// => try to "fast-match" such strings to avoid
589	// the overhead of decode_str + hv_store_ent.
590	{
591	SV *value;
592	char *p = dec->cur;
593	char *e = p + 24; // only try up to 24 bytes
594
595	for (;;)
596	{
597	// the >= 0x80 is false on most architectures
598	if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\')
599	{
600	// slow path, back up and use decode_str
601	SV *key = decode_str (dec);
602	if (!key)
603	goto fail;
604
605	decode_ws (dec); EXPECT_CH (':');
606
607	decode_ws (dec);
608	value = decode_sv (dec);
609	if (!value)
610	{
611	SvREFCNT_dec (key);
612	goto fail;
613	}
614
615	hv_store_ent (hv, key, value, 0);
616	SvREFCNT_dec (key);
617
618	break;
619	}
620	else if (*p == '"')
621	{
622	// fast path, got a simple key
623	char *key = dec->cur;
624	int len = p - key;
625	dec->cur = p + 1;
626
627	decode_ws (dec); EXPECT_CH (':');
628
629	decode_ws (dec);
630	value = decode_sv (dec);
631	if (!value)
632	goto fail;
633
634	hv_store (hv, key, len, value, 0);
635
636	break;
637	}
638
639	++p;
640	}
641	}
642
643	decode_ws (dec);
644
645	if (*dec->cur == '}')
646	{
647	++dec->cur;
648	break;
649	}
650
651	if (*dec->cur != ',')
652	ERR (", or } expected while parsing object/hash");
653
654	++dec->cur;
655
656	decode_ws (dec);
657
658	if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED)
659	{
660	++dec->cur;
661	break;
662	}
663	}
664
665	DEC_DEC_DEPTH;
666	sv = newRV_noinc ((SV *)hv);
667
668	// check filter callbacks
669	if (dec->cbor.flags & F_HOOK)
670	{
671	if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1)
672	{
673	HE *cb, *he;
674
675	hv_iterinit (hv);
676	he = hv_iternext (hv);
677	hv_iterinit (hv);
678
679	// the next line creates a mortal sv each time its called.
680	// might want to optimise this for common cases.
681	cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0);
682
683	if (cb)
684	{
685	dSP;
686	int count;
687
688	ENTER; SAVETMPS; PUSHMARK (SP);
689	XPUSHs (HeVAL (he));
690	sv_2mortal (sv);
691
692	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
693
694	if (count == 1)
695	{
696	sv = newSVsv (POPs);
697	FREETMPS; LEAVE;
698	return sv;
699	}
700
701	SvREFCNT_inc (sv);
702	FREETMPS; LEAVE;
703	}
704	}
705
706	if (dec->cbor.cb_object)
707	{
708	dSP;
709	int count;
710
711	ENTER; SAVETMPS; PUSHMARK (SP);
712	XPUSHs (sv_2mortal (sv));
713
714	PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN;
715
716	if (count == 1)
717	{
718	sv = newSVsv (POPs);
719	FREETMPS; LEAVE;
720	return sv;
721	}
722
723	SvREFCNT_inc (sv);
724	FREETMPS; LEAVE;
725	}
726	}
727
728	return sv;
729	#endif
730		806
731	fail:	807	fail:
732	SvREFCNT_dec (hv);	808	SvREFCNT_dec (hv);
733	DEC_DEC_DEPTH;	809	DEC_DEC_DEPTH;
734	return &PL_sv_undef;	810	return &PL_sv_undef;
735	}	811	}
736		812
737	static SV *	813	static SV *
738	decode_str (dec_t *dec, int utf8)	814	decode_str (dec_t *dec, int utf8)
739	{	815	{
740	SV *sv;	816	SV *sv = 0;
741		817
742	if ((*dec->cur & 31) == 31)	818	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
743	{	819	{
		820	// indefinite length strings
744	++dec->cur;	821	++dec->cur;
745		822
		823	U8 major = *dec->cur & MAJOR_MISC;
		824
746	sv = newSVpvn ("", 0);	825	sv = newSVpvn ("", 0);
747		826
748	// not very fast, and certainly not robust against illegal input
749	for (;;)	827	for (;;)
750	{	828	{
751	WANT (1);	829	WANT (1);
752		830
753	if (*dec->cur == (0xe0 | 31))	831	if ((*dec->cur - major) > LENGTH_EXT8)
		832	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
754	{	833	{
755	++dec->cur;	834	++dec->cur;
756	break;	835	break;
757	}	836	}
		837	else
		838	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
758		839
759	SV *sv2 = decode_sv (dec);	840	STRLEN len = decode_uint (dec);
760	sv_catsv (sv, sv2);	841
		842	WANT (len);
		843	sv_catpvn (sv, dec->cur, len);
		844	dec->cur += len;
761	}	845	}
762	}	846	}
763	else	847	else
764	{	848	{
765	STRLEN len = decode_uint (dec);	849	STRLEN len = decode_uint (dec);
766		850
767	WANT (len);	851	WANT (len);
768	sv = newSVpvn (dec->cur, len);	852	sv = newSVpvn (dec->cur, len);
769	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));
770	}	858	}
771		859
772	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
773	SvUTF8_on (sv);	866	SvUTF8_on (sv);
		867	}
774		868
775	return sv;	869	return sv;
776		870
777	fail:	871	fail:
		872	SvREFCNT_dec (sv);
778	return &PL_sv_undef;	873	return &PL_sv_undef;
779	}	874	}
780		875
781	static SV *	876	static SV *
782	decode_tagged (dec_t *dec)	877	decode_tagged (dec_t *dec)
783	{	878	{
		879	SV *sv = 0;
784	UV tag = decode_uint (dec);	880	UV tag = decode_uint (dec);
		881
		882	WANT (1);
		883
		884	switch (tag)
		885	{
		886	case CBOR_TAG_MAGIC:
785	SV *sv = decode_sv (dec);	887	sv = decode_sv (dec);
		888	break;
786		889
787	if (tag == 55799) // 2.4.5 Self-Describe CBOR	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
788	return sv;	1057	return sv;
789		1058
790	AV *av = newAV ();	1059	fail:
791	av_push (av, newSVuv (tag));	1060	SvREFCNT_dec (sv);
792	av_push (av, sv);	1061	return &PL_sv_undef;
793	return newRV_noinc ((SV *)av);
794	}	1062	}
795		1063
796	static SV *	1064	static SV *
797	decode_sv (dec_t *dec)	1065	decode_sv (dec_t *dec)
798	{	1066	{
799	WANT (1);	1067	WANT (1);
800		1068
801	switch (*dec->cur >> 5)	1069	switch (*dec->cur >> MAJOR_SHIFT)
802	{	1070	{
803	case 0: // unsigned int	1071	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
804	//TODO: 64 bit values on 3 2bit perls	1072	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
805	return newSVuv (decode_uint (dec));	1073	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
806	case 1: // negative int	1074	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
807	return newSViv (-1 - (IV)decode_uint (dec));	1075	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
808	case 2: // octet string	1076	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
809	return decode_str (dec, 0);	1077	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
810	case 3: // utf-8 string	1078
811	return decode_str (dec, 1);	1079	case MAJOR_MISC >> MAJOR_SHIFT:
812	case 4: // array
813	return decode_av (dec);
814	case 5: // map
815	return decode_hv (dec);
816	case 6: // tag
817	return decode_tagged (dec);
818	case 7: // misc
819	switch (*dec->cur++ & 31)	1080	switch (*dec->cur++ & MINOR_MASK)
820	{	1081	{
821	case 20:	1082	case SIMPLE_FALSE:
822	#if CBOR_SLOW	1083	#if CBOR_SLOW
823	cbor_false = get_bool ("CBOR::XS::false");	1084	types_false = get_bool ("Types::Serialiser::false");
824	#endif	1085	#endif
825	return newSVsv (cbor_false);	1086	return newSVsv (types_false);
826	case 21:	1087	case SIMPLE_TRUE:
827	#if CBOR_SLOW	1088	#if CBOR_SLOW
828	cbor_true = get_bool ("CBOR::XS::true");	1089	types_true = get_bool ("Types::Serialiser::true");
829	#endif	1090	#endif
830	return newSVsv (cbor_true);	1091	return newSVsv (types_true);
831	case 22:	1092	case SIMPLE_NULL:
832	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);
833		1099
834	case 25:	1100	case MISC_FLOAT16:
835	{	1101	{
836	WANT (2);	1102	WANT (2);
837		1103
838	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1104	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
839	dec->cur += 2;	1105	dec->cur += 2;
840		1106
841	return newSVnv (ecb_binary16_to_float (fp));	1107	return newSVnv (ecb_binary16_to_float (fp));
842	}	1108	}
843		1109
844	case 26:	1110	case MISC_FLOAT32:
845	{	1111	{
846	uint32_t fp;	1112	uint32_t fp;
847	WANT (4);	1113	WANT (4);
848	memcpy (&fp, dec->cur, 4);	1114	memcpy (&fp, dec->cur, 4);
849	dec->cur += 4;	1115	dec->cur += 4;
…		…
852	fp = ecb_bswap32 (fp);	1118	fp = ecb_bswap32 (fp);
853		1119
854	return newSVnv (ecb_binary32_to_float (fp));	1120	return newSVnv (ecb_binary32_to_float (fp));
855	}	1121	}
856		1122
857	case 27:	1123	case MISC_FLOAT64:
858	{	1124	{
859	uint64_t fp;	1125	uint64_t fp;
860	WANT (8);	1126	WANT (8);
861	memcpy (&fp, dec->cur, 8);	1127	memcpy (&fp, dec->cur, 8);
862	dec->cur += 8;	1128	dec->cur += 8;
…		…
865	fp = ecb_bswap64 (fp);	1131	fp = ecb_bswap64 (fp);
866		1132
867	return newSVnv (ecb_binary64_to_double (fp));	1133	return newSVnv (ecb_binary64_to_double (fp));
868	}	1134	}
869		1135
870	// 0..19 unassigned	1136	// 0..19 unassigned simple
871	// 24 reserved + unassigned (reserved values are not encodable)	1137	// 24 reserved + unassigned (reserved values are not encodable)
872	default:	1138	default:
873	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1139	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");
874	}	1140	}
875		1141
876	break;	1142	break;
877	}	1143	}
878	#if 0
879	switch (*dec->cur)
880	{
881	//case '"': ++dec->cur; return decode_str (dec);
882	case '[': ++dec->cur; return decode_av (dec);
883	case '{': ++dec->cur; return decode_hv (dec);
884
885	case '-':
886	case '0': case '1': case '2': case '3': case '4':
887	case '5': case '6': case '7': case '8': case '9':
888	//TODO return decode_num (dec);
889
890	case 't':
891	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
892	{
893	dec->cur += 4;
894	#if CBOR_SLOW
895	cbor_true = get_bool ("CBOR::XS::true");
896	#endif
897	return newSVsv (cbor_true);
898	}
899	else
900	ERR ("'true' expected");
901
902	break;
903
904	case 'f':
905	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
906	{
907	dec->cur += 5;
908	#if CBOR_SLOW
909	cbor_false = get_bool ("CBOR::XS::false");
910	#endif
911	return newSVsv (cbor_false);
912	}
913	else
914	ERR ("'false' expected");
915
916	break;
917
918	case 'n':
919	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
920	{
921	dec->cur += 4;
922	return newSVsv (&PL_sv_undef);
923	}
924	else
925	ERR ("'null' expected");
926
927	break;
928
929	default:
930	ERR ("malformed CBOR string, neither array, object, number, string or atom");
931	break;
932	}
933	#endif
934		1144
935	fail:	1145	fail:
936	return &PL_sv_undef;	1146	return &PL_sv_undef;
937	}	1147	}
938		1148
939	static SV *	1149	static SV *
940	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1150	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
941	{	1151	{
942	dec_t dec;	1152	dec_t dec = { };
943	SV *sv;	1153	SV *sv;
		1154	STRLEN len;
		1155	char *data = SvPVbyte (string, len);
944		1156
945	/* work around bugs in 5.10 where manipulating magic values
946	* makes perl ignore the magic in subsequent accesses.
947	* also make a copy of non-PV values, to get them into a clean
948	* state (SvPV should do that, but it's buggy, see below).
949	*/
950	/*SvGETMAGIC (string);*/
951	if (SvMAGICAL (string) || !SvPOK (string))
952	string = sv_2mortal (newSVsv (string));
953
954	SvUPGRADE (string, SVt_PV);
955
956	/* work around a bug in perl 5.10, which causes SvCUR to fail an
957	* assertion with -DDEBUGGING, although SvCUR is documented to
958	* return the xpv_cur field which certainly exists after upgrading.
959	* according to nicholas clark, calling SvPOK fixes this.
960	* But it doesn't fix it, so try another workaround, call SvPV_nolen
961	* and hope for the best.
962	* Damnit, SvPV_nolen still trips over yet another assertion. This
963	* assertion business is seriously broken, try yet another workaround
964	* for the broken -DDEBUGGING.
965	*/
966	{
967	#ifdef DEBUGGING
968	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
969	#else
970	STRLEN offset = SvCUR (string);
971	#endif
972
973	if (offset > cbor->max_size && cbor->max_size)	1157	if (len > cbor->max_size && cbor->max_size)
974	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",
975	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1159	(unsigned long)len, (unsigned long)cbor->max_size);
976	}
977
978	sv_utf8_downgrade (string, 0);
979		1160
980	dec.cbor = *cbor;	1161	dec.cbor = *cbor;
981	dec.cur = (U8 *)SvPVX (string);	1162	dec.cur = (U8 *)data;
982	dec.end = (U8 *)SvEND (string);	1163	dec.end = (U8 *)data + len;
983	dec.err = 0;
984	dec.depth = 0;
985
986	if (dec.cbor.cb_object || dec.cbor.cb_sk_object)
987	;//TODO dec.cbor.flags |= F_HOOK;
988		1164
989	sv = decode_sv (&dec);	1165	sv = decode_sv (&dec);
990		1166
991	if (offset_return)	1167	if (offset_return)
992	*offset_return = dec.cur;	1168	*offset_return = dec.cur;
…		…
995	if (dec.cur != dec.end && !dec.err)	1171	if (dec.cur != dec.end && !dec.err)
996	dec.err = "garbage after CBOR object";	1172	dec.err = "garbage after CBOR object";
997		1173
998	if (dec.err)	1174	if (dec.err)
999	{	1175	{
		1176	if (dec.shareable)
		1177	{
		1178	// need to break cyclic links, which whould all be in shareable
		1179	int i;
		1180	SV **svp;
		1181
		1182	for (i = av_len (dec.shareable) + 1; i--; )
		1183	if ((svp = av_fetch (dec.shareable, i, 0)))
		1184	sv_setsv (*svp, &PL_sv_undef);
		1185	}
		1186
1000	SvREFCNT_dec (sv);	1187	SvREFCNT_dec (sv);
1001	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1188	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1002	}	1189	}
1003		1190
1004	sv = sv_2mortal (sv);	1191	sv = sv_2mortal (sv);
1005		1192
1006	return sv;	1193	return sv;
…		…
1012	MODULE = CBOR::XS PACKAGE = CBOR::XS	1199	MODULE = CBOR::XS PACKAGE = CBOR::XS
1013		1200
1014	BOOT:	1201	BOOT:
1015	{	1202	{
1016	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1203	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
1017	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);	1204	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
1018		1205
1019	cbor_true = get_bool ("CBOR::XS::true");	1206	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
1020	cbor_false = get_bool ("CBOR::XS::false");	1207	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1208
		1209	types_true = get_bool ("Types::Serialiser::true" );
		1210	types_false = get_bool ("Types::Serialiser::false");
		1211	types_error = get_bool ("Types::Serialiser::error");
		1212
		1213	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1214
		1215	sv_cbor = newSVpv ("CBOR", 0);
		1216	SvREADONLY_on (sv_cbor);
1021	}	1217	}
1022		1218
1023	PROTOTYPES: DISABLE	1219	PROTOTYPES: DISABLE
1024		1220
1025	void CLONE (...)	1221	void CLONE (...)
1026	CODE:	1222	CODE:
1027	cbor_stash = 0;	1223	cbor_stash = 0;
		1224	cbor_tagged_stash = 0;
		1225	types_error_stash = 0;
1028	cbor_boolean_stash = 0;	1226	types_boolean_stash = 0;
1029		1227
1030	void new (char *klass)	1228	void new (char *klass)
1031	PPCODE:	1229	PPCODE:
1032	{	1230	{
1033	SV *pv = NEWSV (0, sizeof (CBOR));	1231	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
1041		1239
1042	void shrink (CBOR *self, int enable = 1)	1240	void shrink (CBOR *self, int enable = 1)
1043	ALIAS:	1241	ALIAS:
1044	shrink = F_SHRINK	1242	shrink = F_SHRINK
1045	allow_unknown = F_ALLOW_UNKNOWN	1243	allow_unknown = F_ALLOW_UNKNOWN
		1244	allow_sharing = F_ALLOW_SHARING
		1245	allow_cycles = F_ALLOW_CYCLES
		1246	pack_strings = F_PACK_STRINGS
		1247	validate_utf8 = F_VALIDATE_UTF8
1046	PPCODE:	1248	PPCODE:
1047	{	1249	{
1048	if (enable)	1250	if (enable)
1049	self->flags |= ix;	1251	self->flags |= ix;
1050	else	1252	else
…		…
1055		1257
1056	void get_shrink (CBOR *self)	1258	void get_shrink (CBOR *self)
1057	ALIAS:	1259	ALIAS:
1058	get_shrink = F_SHRINK	1260	get_shrink = F_SHRINK
1059	get_allow_unknown = F_ALLOW_UNKNOWN	1261	get_allow_unknown = F_ALLOW_UNKNOWN
		1262	get_allow_sharing = F_ALLOW_SHARING
		1263	get_allow_cycles = F_ALLOW_CYCLES
		1264	get_pack_strings = F_PACK_STRINGS
		1265	get_validate_utf8 = F_VALIDATE_UTF8
1060	PPCODE:	1266	PPCODE:
1061	XPUSHs (boolSV (self->flags & ix));	1267	XPUSHs (boolSV (self->flags & ix));
1062		1268
1063	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1269	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1064	PPCODE:	1270	PPCODE:
…		…
1080	CODE:	1286	CODE:
1081	RETVAL = self->max_size;	1287	RETVAL = self->max_size;
1082	OUTPUT:	1288	OUTPUT:
1083	RETVAL	1289	RETVAL
1084		1290
1085	#if 0 //TODO	1291	void filter (CBOR *self, SV *filter = 0)
1086
1087	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
1088	PPCODE:	1292	PPCODE:
1089	{
1090	SvREFCNT_dec (self->cb_object);	1293	SvREFCNT_dec (self->filter);
1091	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1294	self->filter = filter ? newSVsv (filter) : filter;
1092
1093	XPUSHs (ST (0));	1295	XPUSHs (ST (0));
1094	}
1095		1296
1096	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1297	SV *get_filter (CBOR *self)
1097	PPCODE:	1298	CODE:
1098	{	1299	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1099	if (!self->cb_sk_object)	1300	OUTPUT:
1100	self->cb_sk_object = newHV ();	1301	RETVAL
1101
1102	if (SvOK (cb))
1103	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
1104	else
1105	{
1106	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
1107
1108	if (!HvKEYS (self->cb_sk_object))
1109	{
1110	SvREFCNT_dec (self->cb_sk_object);
1111	self->cb_sk_object = 0;
1112	}
1113	}
1114
1115	XPUSHs (ST (0));
1116	}
1117
1118	#endif
1119		1302
1120	void encode (CBOR *self, SV *scalar)	1303	void encode (CBOR *self, SV *scalar)
1121	PPCODE:	1304	PPCODE:
1122	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1305	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
1123	XPUSHs (scalar);	1306	XPUSHs (scalar);
…		…
1137	PUSHs (sv);	1320	PUSHs (sv);
1138	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1321	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1139	}	1322	}
1140		1323
1141	void DESTROY (CBOR *self)	1324	void DESTROY (CBOR *self)
1142	CODE:	1325	PPCODE:
1143	SvREFCNT_dec (self->cb_sk_object);	1326	cbor_free (self);
1144	SvREFCNT_dec (self->cb_object);
1145		1327
1146	PROTOTYPES: ENABLE	1328	PROTOTYPES: ENABLE
1147		1329
1148	void encode_cbor (SV *scalar)	1330	void encode_cbor (SV *scalar)
		1331	ALIAS:
		1332	encode_cbor = 0
		1333	encode_cbor_sharing = F_ALLOW_SHARING
1149	PPCODE:	1334	PPCODE:
1150	{	1335	{
1151	CBOR cbor;	1336	CBOR cbor;
1152	cbor_init (&cbor);	1337	cbor_init (&cbor);
		1338	cbor.flags |= ix;
1153	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1339	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1154	XPUSHs (scalar);	1340	XPUSHs (scalar);
1155	}	1341	}
1156		1342
1157	void decode_cbor (SV *cborstr)	1343	void decode_cbor (SV *cborstr)

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