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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.15 by root, Tue Oct 29 18:37:31 2013 UTC vs.
Revision 1.57 by root, Fri Nov 25 12:16:12 2016 UTC

…		…
7	#include <stdlib.h>	7	#include <stdlib.h>
8	#include <stdio.h>	8	#include <stdio.h>
9	#include <limits.h>	9	#include <limits.h>
10	#include <float.h>	10	#include <float.h>
11		11
		12	#define ECB_NO_THREADS 1
12	#include "ecb.h"	13	#include "ecb.h"
13		14
14	// compatibility with perl <5.18	15	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	16	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	17	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	20	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	21	#endif
21	#ifndef HvNAMEUTF8	22	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	23	# define HvNAMEUTF8(hv) 0
23	#endif	24	#endif
		25	#ifndef SvREFCNT_dec_NN
		26	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		27	#endif
		28
		29	// known major and minor types
		30	enum cbor_type
		31	{
		32	MAJOR_SHIFT = 5,
		33	MINOR_MASK = 0x1f,
		34
		35	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		36	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		37	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		38	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		39	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		40	MAJOR_MAP = 5 << MAJOR_SHIFT,
		41	MAJOR_TAG = 6 << MAJOR_SHIFT,
		42	MAJOR_MISC = 7 << MAJOR_SHIFT,
		43
		44	// INT/STRING/ARRAY/MAP subtypes
		45	LENGTH_EXT1 = 24,
		46	LENGTH_EXT2 = 25,
		47	LENGTH_EXT4 = 26,
		48	LENGTH_EXT8 = 27,
		49
		50	// SIMPLE types (effectively MISC subtypes)
		51	SIMPLE_FALSE = 20,
		52	SIMPLE_TRUE = 21,
		53	SIMPLE_NULL = 22,
		54	SIMPLE_UNDEF = 23,
		55
		56	// MISC subtype (unused)
		57	MISC_EXT1 = 24,
		58	MISC_FLOAT16 = 25,
		59	MISC_FLOAT32 = 26,
		60	MISC_FLOAT64 = 27,
		61
		62	// BYTES/TEXT/ARRAY/MAP
		63	MINOR_INDEF = 31,
		64	};
24		65
25	// known tags	66	// known tags
26	enum cbor_tag	67	enum cbor_tag
27	{	68	{
28	// inofficial extensions (pending iana registration)	69	// extensions
29	CBOR_TAG_PERL_OBJECT = 256,	70	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
30	CBOR_TAG_GENERIC_OBJECT = 257,	71	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		72	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		73	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		74	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		76	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
31		77
32	// rfc7049	78	// rfc7049
33	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	79	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
34	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	80	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
35	CBOR_TAG_POS_BIGNUM = 2, // byte string	81	CBOR_TAG_POS_BIGNUM = 2, // byte string
36	CBOR_TAG_NEG_BIGNUM = 3, // byte string	82	CBOR_TAG_NEG_BIGNUM = 3, // byte string
37	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	83	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
38	CBOR_TAG_BIGFLOAT = 5, // array	84	CBOR_TAG_BIGFLOAT = 5, // array
39		85
40	CBOR_TAG_CONV_B64U = 21, // base64url, any	86	CBOR_TAG_CONV_B64U = 21, // base64url, any
41	CBOR_TAG_CONV_B64 = 22, // base64, any	87	CBOR_TAG_CONV_B64 = 22, // base64, any
42	CBOR_TAG_CONV_HEX = 23, // base16, any	88	CBOR_TAG_CONV_HEX = 23, // base16, any
43	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	89	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
44		90
45	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	91	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
46	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	92	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
47	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	93	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
48	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	94	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
49	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	95	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
50		96
51	CBOR_TAG_MAGIC = 55799 // self-describe cbor	97	CBOR_TAG_MAGIC = 55799, // self-describe cbor
52	};	98	};
53		99
54	#define F_SHRINK 0x00000200UL	100	#define F_SHRINK 0x00000001UL
55	#define F_ALLOW_UNKNOWN 0x00002000UL	101	#define F_ALLOW_UNKNOWN 0x00000002UL
		102	#define F_ALLOW_SHARING 0x00000004UL
		103	#define F_ALLOW_CYCLES 0x00000008UL
		104	#define F_PACK_STRINGS 0x00000010UL
		105	#define F_TEXT_KEYS 0x00000020UL
		106	#define F_TEXT_STRINGS 0x00000040UL
		107	#define F_VALIDATE_UTF8 0x00000080UL
56		108
57	#define INIT_SIZE 32 // initial scalar size to be allocated	109	#define INIT_SIZE 32 // initial scalar size to be allocated
58		110
59	#define SB do {	111	#define SB do {
60	#define SE } while (0)	112	#define SE } while (0)
…		…
72	# define CBOR_SLOW 0	124	# define CBOR_SLOW 0
73	# define CBOR_STASH cbor_stash	125	# define CBOR_STASH cbor_stash
74	#endif	126	#endif
75		127
76	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	128	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
77	static SV *types_true, *types_false, *types_error, *sv_cbor;	129	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
78		130
79	typedef struct {	131	typedef struct {
80	U32 flags;	132	U32 flags;
81	U32 max_depth;	133	U32 max_depth;
82	STRLEN max_size;	134	STRLEN max_size;
		135	SV *filter;
		136
		137	// for the incremental parser
		138	STRLEN incr_pos; // the current offset into the text
		139	STRLEN incr_need; // minimum bytes needed to decode
		140	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
83	} CBOR;	141	} CBOR;
84		142
85	ecb_inline void	143	ecb_inline void
86	cbor_init (CBOR *cbor)	144	cbor_init (CBOR *cbor)
87	{	145	{
88	Zero (cbor, 1, CBOR);	146	Zero (cbor, 1, CBOR);
89	cbor->max_depth = 512;	147	cbor->max_depth = 512;
		148	}
		149
		150	ecb_inline void
		151	cbor_free (CBOR *cbor)
		152	{
		153	SvREFCNT_dec (cbor->filter);
		154	SvREFCNT_dec (cbor->incr_count);
90	}	155	}
91		156
92	/////////////////////////////////////////////////////////////////////////////	157	/////////////////////////////////////////////////////////////////////////////
93	// utility functions	158	// utility functions
94		159
…		…
116	SvPV_renew (sv, SvCUR (sv) + 1);	181	SvPV_renew (sv, SvCUR (sv) + 1);
117	#endif	182	#endif
118	}	183	}
119	}	184	}
120		185
121	/////////////////////////////////////////////////////////////////////////////	186	// minimum length of a string to be registered for stringref
122	// fp hell	187	ecb_inline int
123		188	minimum_string_length (UV idx)
124	//TODO	189	{
		190	return idx > 23
		191	? idx > 0xffU
		192	? idx > 0xffffU
		193	? idx > 0xffffffffU
		194	? 11
		195	: 7
		196	: 5
		197	: 4
		198	: 3;
		199	}
125		200
126	/////////////////////////////////////////////////////////////////////////////	201	/////////////////////////////////////////////////////////////////////////////
127	// encoder	202	// encoder
128		203
129	// structure used for encoding CBOR	204	// structure used for encoding CBOR
…		…
132	char *cur; // SvPVX (sv) + current output position	207	char *cur; // SvPVX (sv) + current output position
133	char *end; // SvEND (sv)	208	char *end; // SvEND (sv)
134	SV *sv; // result scalar	209	SV *sv; // result scalar
135	CBOR cbor;	210	CBOR cbor;
136	U32 depth; // recursion level	211	U32 depth; // recursion level
		212	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		213	UV stringref_idx;
		214	HV *shareable; // ptr => index, or 0
		215	UV shareable_idx;
137	} enc_t;	216	} enc_t;
138		217
139	ecb_inline void	218	ecb_inline void
140	need (enc_t *enc, STRLEN len)	219	need (enc_t *enc, STRLEN len)
141	{	220	{
…		…
158	static void	237	static void
159	encode_uint (enc_t *enc, int major, UV len)	238	encode_uint (enc_t *enc, int major, UV len)
160	{	239	{
161	need (enc, 9);	240	need (enc, 9);
162		241
163	if (len < 24)	242	if (ecb_expect_true (len < LENGTH_EXT1))
164	*enc->cur++ = major | len;	243	*enc->cur++ = major | len;
165	else if (len <= 0xff)	244	else if (ecb_expect_true (len <= 0xffU))
166	{	245	{
167	*enc->cur++ = major | 24;	246	*enc->cur++ = major | LENGTH_EXT1;
168	*enc->cur++ = len;	247	*enc->cur++ = len;
169	}	248	}
170	else if (len <= 0xffff)	249	else if (len <= 0xffffU)
171	{	250	{
172	*enc->cur++ = major | 25;	251	*enc->cur++ = major | LENGTH_EXT2;
173	*enc->cur++ = len >> 8;	252	*enc->cur++ = len >> 8;
174	*enc->cur++ = len;	253	*enc->cur++ = len;
175	}	254	}
176	else if (len <= 0xffffffff)	255	else if (len <= 0xffffffffU)
177	{	256	{
178	*enc->cur++ = major | 26;	257	*enc->cur++ = major | LENGTH_EXT4;
179	*enc->cur++ = len >> 24;	258	*enc->cur++ = len >> 24;
180	*enc->cur++ = len >> 16;	259	*enc->cur++ = len >> 16;
181	*enc->cur++ = len >> 8;	260	*enc->cur++ = len >> 8;
182	*enc->cur++ = len;	261	*enc->cur++ = len;
183	}	262	}
184	else	263	else
185	{	264	{
186	*enc->cur++ = major | 27;	265	*enc->cur++ = major | LENGTH_EXT8;
187	*enc->cur++ = len >> 56;	266	*enc->cur++ = len >> 56;
188	*enc->cur++ = len >> 48;	267	*enc->cur++ = len >> 48;
189	*enc->cur++ = len >> 40;	268	*enc->cur++ = len >> 40;
190	*enc->cur++ = len >> 32;	269	*enc->cur++ = len >> 32;
191	*enc->cur++ = len >> 24;	270	*enc->cur++ = len >> 24;
…		…
193	*enc->cur++ = len >> 8;	272	*enc->cur++ = len >> 8;
194	*enc->cur++ = len;	273	*enc->cur++ = len;
195	}	274	}
196	}	275	}
197		276
198	static void	277	ecb_inline void
		278	encode_tag (enc_t *enc, UV tag)
		279	{
		280	encode_uint (enc, MAJOR_TAG, tag);
		281	}
		282
		283	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		284	ecb_noinline static void
199	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	285	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
200	{	286	{
201	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	287	STRLEN ulen = len;
		288	U8 *p, *pend = (U8 *)str + len;
		289
		290	for (p = (U8 *)str; p < pend; ++p)
		291	ulen += *p >> 7; // count set high bits
		292
		293	encode_uint (enc, MAJOR_TEXT, ulen);
		294
		295	need (enc, ulen);
		296	for (p = (U8 *)str; p < pend; ++p)
		297	if (*p < 0x80)
		298	*enc->cur++ = *p;
		299	else
		300	{
		301	*enc->cur++ = 0xc0 + (*p >> 6);
		302	*enc->cur++ = 0x80 + (*p & 63);
		303	}
		304	}
		305
		306	ecb_inline void
		307	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		308	{
		309	if (ecb_expect_false (upgrade_utf8))
		310	if (!utf8)
		311	{
		312	encode_str_utf8 (enc, utf8, str, len);
		313	return;
		314	}
		315
		316	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
202	need (enc, len);	317	need (enc, len);
203	memcpy (enc->cur, str, len);	318	memcpy (enc->cur, str, len);
204	enc->cur += len;	319	enc->cur += len;
205	}	320	}
206		321
		322	ecb_inline void
		323	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		324	{
		325	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		326	{
		327	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		328
		329	if (SvOK (*svp))
		330	{
		331	// already registered, use stringref
		332	encode_tag (enc, CBOR_TAG_STRINGREF);
		333	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		334	return;
		335	}
		336	else if (len >= minimum_string_length (enc->stringref_idx))
		337	{
		338	// register only
		339	sv_setuv (*svp, enc->stringref_idx);
		340	++enc->stringref_idx;
		341	}
		342	}
		343
		344	encode_str (enc, upgrade_utf8, utf8, str, len);
		345	}
		346
207	static void encode_sv (enc_t *enc, SV *sv);	347	static void encode_sv (enc_t *enc, SV *sv);
208		348
209	static void	349	static void
210	encode_av (enc_t *enc, AV *av)	350	encode_av (enc_t *enc, AV *av)
211	{	351	{
…		…
214	if (enc->depth >= enc->cbor.max_depth)	354	if (enc->depth >= enc->cbor.max_depth)
215	croak (ERR_NESTING_EXCEEDED);	355	croak (ERR_NESTING_EXCEEDED);
216		356
217	++enc->depth;	357	++enc->depth;
218		358
219	encode_uint (enc, 0x80, len + 1);	359	encode_uint (enc, MAJOR_ARRAY, len + 1);
220		360
		361	if (SvMAGICAL (av))
221	for (i = 0; i <= len; ++i)	362	for (i = 0; i <= len; ++i)
222	{	363	{
223	SV **svp = av_fetch (av, i, 0);	364	SV **svp = av_fetch (av, i, 0);
224	encode_sv (enc, svp ? *svp : &PL_sv_undef);	365	encode_sv (enc, svp ? *svp : &PL_sv_undef);
225	}	366	}
		367	else
		368	for (i = 0; i <= len; ++i)
		369	{
		370	SV *sv = AvARRAY (av)[i];
		371	encode_sv (enc, sv ? sv : &PL_sv_undef);
		372	}
226		373
227	--enc->depth;	374	--enc->depth;
228	}	375	}
229		376
230	static void	377	static void
…		…
239		386
240	int pairs = hv_iterinit (hv);	387	int pairs = hv_iterinit (hv);
241	int mg = SvMAGICAL (hv);	388	int mg = SvMAGICAL (hv);
242		389
243	if (mg)	390	if (mg)
244	encode_ch (enc, 0xa0 | 31);	391	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
245	else	392	else
246	encode_uint (enc, 0xa0, pairs);	393	encode_uint (enc, MAJOR_MAP, pairs);
247		394
248	while ((he = hv_iternext (hv)))	395	while ((he = hv_iternext (hv)))
249	{	396	{
250	if (HeKLEN (he) == HEf_SVKEY)	397	if (HeKLEN (he) == HEf_SVKEY)
251	encode_sv (enc, HeSVKEY (he));	398	encode_sv (enc, HeSVKEY (he));
252	else	399	else
253	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	400	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
254		401
255	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	402	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
256	}	403	}
257		404
258	if (mg)	405	if (mg)
259	encode_ch (enc, 0xe0 | 31);	406	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
260		407
261	--enc->depth;	408	--enc->depth;
262	}	409	}
263		410
264	// encode objects, arrays and special \0=false and \1=true values.	411	// encode objects, arrays and special \0=false and \1=true values.
265	static void	412	static void
266	encode_rv (enc_t *enc, SV *sv)	413	encode_rv (enc_t *enc, SV *sv)
267	{	414	{
268	svtype svt;
269
270	SvGETMAGIC (sv);	415	SvGETMAGIC (sv);
		416
271	svt = SvTYPE (sv);	417	svtype svt = SvTYPE (sv);
272		418
273	if (ecb_expect_false (SvOBJECT (sv)))	419	if (ecb_expect_false (SvOBJECT (sv)))
274	{	420	{
275	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	421	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
276	? types_boolean_stash	422	? types_boolean_stash
…		…
281	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	427	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
282	? cbor_tagged_stash	428	? cbor_tagged_stash
283	: gv_stashpv ("CBOR::XS::Tagged" , 1);	429	: gv_stashpv ("CBOR::XS::Tagged" , 1);
284		430
285	HV *stash = SvSTASH (sv);	431	HV *stash = SvSTASH (sv);
286	GV *method;
287		432
288	if (stash == boolean_stash)	433	if (stash == boolean_stash)
289	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	434	{
		435	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		436	return;
		437	}
290	else if (stash == error_stash)	438	else if (stash == error_stash)
291	encode_ch (enc, 0xe0 | 23);	439	{
		440	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		441	return;
		442	}
292	else if (stash == tagged_stash)	443	else if (stash == tagged_stash)
293	{	444	{
294	if (svt != SVt_PVAV)	445	if (svt != SVt_PVAV)
295	croak ("encountered CBOR::XS::Tagged object that isn't an array");	446	croak ("encountered CBOR::XS::Tagged object that isn't an array");
296		447
297	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	448	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
298	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	449	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		450
		451	return;
		452	}
		453	}
		454
		455	if (ecb_expect_false (SvREFCNT (sv) > 1)
		456	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		457	{
		458	if (!enc->shareable)
		459	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		460
		461	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		462
		463	if (SvOK (*svp))
299	}	464	{
		465	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		466	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		467	return;
		468	}
		469	else
		470	{
		471	sv_setuv (*svp, enc->shareable_idx);
		472	++enc->shareable_idx;
		473	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		474	}
		475	}
		476
		477	if (ecb_expect_false (SvOBJECT (sv)))
		478	{
		479	HV *stash = SvSTASH (sv);
		480	GV *method;
		481
300	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	482	if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
301	{	483	{
302	dSP;	484	dSP;
303		485
304	ENTER; SAVETMPS; PUSHMARK (SP);	486	ENTER; SAVETMPS;
		487	PUSHMARK (SP);
305	// we re-bless the reference to get overload and other niceties right	488	// we re-bless the reference to get overload and other niceties right
306	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	489	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
307		490
308	PUTBACK;	491	PUTBACK;
309	// G_SCALAR ensures that return value is 1	492	// G_SCALAR ensures that return value is 1
…		…
322	}	505	}
323	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	506	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
324	{	507	{
325	dSP;	508	dSP;
326		509
327	ENTER; SAVETMPS; PUSHMARK (SP);	510	ENTER; SAVETMPS;
		511	SAVESTACK_POS ();
		512	PUSHMARK (SP);
328	EXTEND (SP, 2);	513	EXTEND (SP, 2);
329	// we re-bless the reference to get overload and other niceties right	514	// we re-bless the reference to get overload and other niceties right
330	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	515	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
331	PUSHs (sv_cbor);	516	PUSHs (sv_cbor);
332		517
…		…
336		521
337	// catch this surprisingly common error	522	// catch this surprisingly common error
338	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	523	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
339	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	524	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
340		525
341	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	526	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
342	encode_uint (enc, 0x80, count + 1);	527	encode_uint (enc, MAJOR_ARRAY, count + 1);
343	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	528	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
344		529
345	while (count)	530	while (count)
346	encode_sv (enc, SP[1 - count--]);	531	encode_sv (enc, SP[1 - count--]);
347		532
348	PUTBACK;	533	PUTBACK;
…		…
355	}	540	}
356	else if (svt == SVt_PVHV)	541	else if (svt == SVt_PVHV)
357	encode_hv (enc, (HV *)sv);	542	encode_hv (enc, (HV *)sv);
358	else if (svt == SVt_PVAV)	543	else if (svt == SVt_PVAV)
359	encode_av (enc, (AV *)sv);	544	encode_av (enc, (AV *)sv);
360	else if (svt < SVt_PVAV)
361	{
362	STRLEN len = 0;
363	char *pv = svt ? SvPV (sv, len) : 0;
364
365	if (len == 1 && *pv == '1')
366	encode_ch (enc, 0xe0 | 21);
367	else if (len == 1 && *pv == '0')
368	encode_ch (enc, 0xe0 | 20);
369	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
370	encode_ch (enc, 0xe0 | 23);
371	else
372	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
373	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
374	}
375	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
376	encode_ch (enc, 0xe0 | 23);
377	else	545	else
378	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	546	{
379	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	547	encode_tag (enc, CBOR_TAG_INDIRECTION);
		548	encode_sv (enc, sv);
		549	}
380	}	550	}
381		551
382	static void	552	static void
383	encode_nv (enc_t *enc, SV *sv)	553	encode_nv (enc_t *enc, SV *sv)
384	{	554	{
385	double nv = SvNVX (sv);	555	double nv = SvNVX (sv);
386		556
387	need (enc, 9);	557	need (enc, 9);
388		558
389	if (ecb_expect_false (nv == (U32)nv))	559	if (ecb_expect_false (nv == (NV)(U32)nv))
390	encode_uint (enc, 0x00, (U32)nv);	560	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
391	//TODO: maybe I32?	561	//TODO: maybe I32?
392	else if (ecb_expect_false (nv == (float)nv))	562	else if (ecb_expect_false (nv == (float)nv))
393	{	563	{
394	uint32_t fp = ecb_float_to_binary32 (nv);	564	uint32_t fp = ecb_float_to_binary32 (nv);
395		565
396	*enc->cur++ = 0xe0 | 26;	566	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
397		567
398	if (!ecb_big_endian ())	568	if (!ecb_big_endian ())
399	fp = ecb_bswap32 (fp);	569	fp = ecb_bswap32 (fp);
400		570
401	memcpy (enc->cur, &fp, 4);	571	memcpy (enc->cur, &fp, 4);
…		…
403	}	573	}
404	else	574	else
405	{	575	{
406	uint64_t fp = ecb_double_to_binary64 (nv);	576	uint64_t fp = ecb_double_to_binary64 (nv);
407		577
408	*enc->cur++ = 0xe0 | 27;	578	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
409		579
410	if (!ecb_big_endian ())	580	if (!ecb_big_endian ())
411	fp = ecb_bswap64 (fp);	581	fp = ecb_bswap64 (fp);
412		582
413	memcpy (enc->cur, &fp, 8);	583	memcpy (enc->cur, &fp, 8);
…		…
422		592
423	if (SvPOKp (sv))	593	if (SvPOKp (sv))
424	{	594	{
425	STRLEN len;	595	STRLEN len;
426	char *str = SvPV (sv, len);	596	char *str = SvPV (sv, len);
427	encode_str (enc, SvUTF8 (sv), str, len);	597	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
428	}	598	}
429	else if (SvNOKp (sv))	599	else if (SvNOKp (sv))
430	encode_nv (enc, sv);	600	encode_nv (enc, sv);
431	else if (SvIOKp (sv))	601	else if (SvIOKp (sv))
432	{	602	{
433	if (SvIsUV (sv))	603	if (SvIsUV (sv))
434	encode_uint (enc, 0x00, SvUVX (sv));	604	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
435	else if (SvIVX (sv) >= 0)	605	else if (SvIVX (sv) >= 0)
436	encode_uint (enc, 0x00, SvIVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
437	else	607	else
438	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	608	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
439	}	609	}
440	else if (SvROK (sv))	610	else if (SvROK (sv))
441	encode_rv (enc, SvRV (sv));	611	encode_rv (enc, SvRV (sv));
442	else if (!SvOK (sv))	612	else if (!SvOK (sv))
443	encode_ch (enc, 0xe0 | 22);	613	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
444	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	614	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
445	encode_ch (enc, 0xe0 | 23);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
446	else	616	else
447	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	617	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
448	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	618	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
449	}	619	}
450		620
451	static SV *	621	static SV *
452	encode_cbor (SV *scalar, CBOR *cbor)	622	encode_cbor (SV *scalar, CBOR *cbor)
453	{	623	{
454	enc_t enc;	624	enc_t enc = { 0 };
455		625
456	enc.cbor = *cbor;	626	enc.cbor = *cbor;
457	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	627	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
458	enc.cur = SvPVX (enc.sv);	628	enc.cur = SvPVX (enc.sv);
459	enc.end = SvEND (enc.sv);	629	enc.end = SvEND (enc.sv);
460	enc.depth = 0;
461		630
462	SvPOK_only (enc.sv);	631	SvPOK_only (enc.sv);
		632
		633	if (cbor->flags & F_PACK_STRINGS)
		634	{
		635	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		636	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		637	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		638	}
		639
463	encode_sv (&enc, scalar);	640	encode_sv (&enc, scalar);
464		641
465	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	642	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
466	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	643	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
467		644
…		…
481	U8 *end; // end of input string	658	U8 *end; // end of input string
482	const char *err; // parse error, if != 0	659	const char *err; // parse error, if != 0
483	CBOR cbor;	660	CBOR cbor;
484	U32 depth; // recursion depth	661	U32 depth; // recursion depth
485	U32 maxdepth; // recursion depth limit	662	U32 maxdepth; // recursion depth limit
		663	AV *shareable;
		664	AV *stringref;
		665	SV *decode_tagged;
486	} dec_t;	666	} dec_t;
487		667
488	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	668	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE
489		669
490	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	670	#define WANT(len) if (ecb_expect_false ((UV)(dec->end - dec->cur) < (UV)len)) ERR ("unexpected end of CBOR data")
491		671
492	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	672	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
493	#define DEC_DEC_DEPTH --dec->depth	673	#define DEC_DEC_DEPTH --dec->depth
494		674
495	static UV	675	static UV
496	decode_uint (dec_t *dec)	676	decode_uint (dec_t *dec)
497	{	677	{
498	switch (*dec->cur & 31)	678	U8 m = *dec->cur & MINOR_MASK;
499	{	679	++dec->cur;
500	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
501	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
502	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
503	return *dec->cur++ & 31;
504		680
505	case 24:	681	if (ecb_expect_true (m < LENGTH_EXT1))
		682	return m;
		683	else if (ecb_expect_true (m == LENGTH_EXT1))
		684	{
506	WANT (2);	685	WANT (1);
507	dec->cur += 2;	686	dec->cur += 1;
508	return dec->cur[-1];	687	return dec->cur[-1];
509		688	}
510	case 25:	689	else if (ecb_expect_true (m == LENGTH_EXT2))
		690	{
511	WANT (3);	691	WANT (2);
512	dec->cur += 3;	692	dec->cur += 2;
513	return (((UV)dec->cur[-2]) << 8)	693	return (((UV)dec->cur[-2]) << 8)
514	| ((UV)dec->cur[-1]);	694	| ((UV)dec->cur[-1]);
515		695	}
516	case 26:	696	else if (ecb_expect_true (m == LENGTH_EXT4))
		697	{
517	WANT (5);	698	WANT (4);
518	dec->cur += 5;	699	dec->cur += 4;
519	return (((UV)dec->cur[-4]) << 24)	700	return (((UV)dec->cur[-4]) << 24)
520	| (((UV)dec->cur[-3]) << 16)	701	| (((UV)dec->cur[-3]) << 16)
521	| (((UV)dec->cur[-2]) << 8)	702	| (((UV)dec->cur[-2]) << 8)
522	| ((UV)dec->cur[-1]);	703	| ((UV)dec->cur[-1]);
523		704	}
524	case 27:	705	else if (ecb_expect_true (m == LENGTH_EXT8))
		706	{
525	WANT (9);	707	WANT (8);
526	dec->cur += 9;	708	dec->cur += 8;
		709
		710	return
		711	#if UVSIZE < 8
		712	0
		713	#else
527	return (((UV)dec->cur[-8]) << 56)	714	(((UV)dec->cur[-8]) << 56)
528	| (((UV)dec->cur[-7]) << 48)	715	| (((UV)dec->cur[-7]) << 48)
529	| (((UV)dec->cur[-6]) << 40)	716	| (((UV)dec->cur[-6]) << 40)
530	| (((UV)dec->cur[-5]) << 32)	717	| (((UV)dec->cur[-5]) << 32)
		718	#endif
531	| (((UV)dec->cur[-4]) << 24)	719	| (((UV)dec->cur[-4]) << 24)
532	| (((UV)dec->cur[-3]) << 16)	720	| (((UV)dec->cur[-3]) << 16)
533	| (((UV)dec->cur[-2]) << 8)	721	| (((UV)dec->cur[-2]) << 8)
534	| ((UV)dec->cur[-1]);	722	| ((UV)dec->cur[-1]);
535		723	}
536	default:	724	else
537	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	725	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
538	}
539		726
540	fail:	727	fail:
541	return 0;	728	return 0;
542	}	729	}
543		730
…		…
548	{	735	{
549	AV *av = newAV ();	736	AV *av = newAV ();
550		737
551	DEC_INC_DEPTH;	738	DEC_INC_DEPTH;
552		739
553	if ((*dec->cur & 31) == 31)	740	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
554	{	741	{
555	++dec->cur;	742	++dec->cur;
556		743
557	for (;;)	744	for (;;)
558	{	745	{
559	WANT (1);	746	WANT (1);
560		747
561	if (*dec->cur == (0xe0 | 31))	748	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
562	{	749	{
563	++dec->cur;	750	++dec->cur;
564	break;	751	break;
565	}	752	}
566		753
567	av_push (av, decode_sv (dec));	754	av_push (av, decode_sv (dec));
568	}	755	}
569	}	756	}
570	else	757	else
571	{	758	{
572	int i, len = decode_uint (dec);	759	UV i, len = decode_uint (dec);
573		760
		761	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
574	av_fill (av, len - 1);	762	av_fill (av, len - 1);
575		763
576	for (i = 0; i < len; ++i)	764	for (i = 0; i < len; ++i)
577	AvARRAY (av)[i] = decode_sv (dec);	765	AvARRAY (av)[i] = decode_sv (dec);
578	}	766	}
…		…
584	SvREFCNT_dec (av);	772	SvREFCNT_dec (av);
585	DEC_DEC_DEPTH;	773	DEC_DEC_DEPTH;
586	return &PL_sv_undef;	774	return &PL_sv_undef;
587	}	775	}
588		776
		777	static void
		778	decode_he (dec_t *dec, HV *hv)
		779	{
		780	// for speed reasons, we specialcase single-string
		781	// byte or utf-8 strings as keys, but only when !stringref
		782
		783	if (ecb_expect_true (!dec->stringref))
		784	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		785	{
		786	STRLEN len = decode_uint (dec);
		787	char *key = (char *)dec->cur;
		788
		789	WANT (len);
		790	dec->cur += len;
		791
		792	hv_store (hv, key, len, decode_sv (dec), 0);
		793
		794	return;
		795	}
		796	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		797	{
		798	STRLEN len = decode_uint (dec);
		799	char *key = (char *)dec->cur;
		800
		801	WANT (len);
		802	dec->cur += len;
		803
		804	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		805	if (!is_utf8_string (key, len))
		806	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		807
		808	hv_store (hv, key, -len, decode_sv (dec), 0);
		809
		810	return;
		811	}
		812
		813	SV *k = decode_sv (dec);
		814	SV *v = decode_sv (dec);
		815
		816	hv_store_ent (hv, k, v, 0);
		817	SvREFCNT_dec (k);
		818
		819	fail:
		820	;
		821	}
		822
589	static SV *	823	static SV *
590	decode_hv (dec_t *dec)	824	decode_hv (dec_t *dec)
591	{	825	{
592	HV *hv = newHV ();	826	HV *hv = newHV ();
593		827
594	DEC_INC_DEPTH;	828	DEC_INC_DEPTH;
595		829
596	if ((*dec->cur & 31) == 31)	830	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
597	{	831	{
598	++dec->cur;	832	++dec->cur;
599		833
600	for (;;)	834	for (;;)
601	{	835	{
602	WANT (1);	836	WANT (1);
603		837
604	if (*dec->cur == (0xe0 | 31))	838	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
605	{	839	{
606	++dec->cur;	840	++dec->cur;
607	break;	841	break;
608	}	842	}
609		843
610	SV *k = decode_sv (dec);	844	decode_he (dec, hv);
611	SV *v = decode_sv (dec);
612
613	hv_store_ent (hv, k, v, 0);
614	SvREFCNT_dec (k);
615	}	845	}
616	}	846	}
617	else	847	else
618	{	848	{
619	int len = decode_uint (dec);	849	UV pairs = decode_uint (dec);
620		850
		851	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		852
621	while (len--)	853	while (pairs--)
622	{	854	decode_he (dec, hv);
623	SV *k = decode_sv (dec);
624	SV *v = decode_sv (dec);
625
626	hv_store_ent (hv, k, v, 0);
627	SvREFCNT_dec (k);
628	}
629	}	855	}
630		856
631	DEC_DEC_DEPTH;	857	DEC_DEC_DEPTH;
632	return newRV_noinc ((SV *)hv);	858	return newRV_noinc ((SV *)hv);
633		859
…		…
640	static SV *	866	static SV *
641	decode_str (dec_t *dec, int utf8)	867	decode_str (dec_t *dec, int utf8)
642	{	868	{
643	SV *sv = 0;	869	SV *sv = 0;
644		870
645	if ((*dec->cur & 31) == 31)	871	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
646	{	872	{
		873	// indefinite length strings
647	++dec->cur;	874	++dec->cur;
648		875
		876	U8 major = *dec->cur & MAJOR_MISC;
		877
649	sv = newSVpvn ("", 0);	878	sv = newSVpvn ("", 0);
650		879
651	// not very fast, and certainly not robust against illegal input
652	for (;;)	880	for (;;)
653	{	881	{
654	WANT (1);	882	WANT (1);
655		883
656	if (*dec->cur == (0xe0 | 31))	884	if ((*dec->cur - major) > LENGTH_EXT8)
		885	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
657	{	886	{
658	++dec->cur;	887	++dec->cur;
659	break;	888	break;
660	}	889	}
		890	else
		891	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
661		892
662	sv_catsv (sv, decode_sv (dec));	893	STRLEN len = decode_uint (dec);
		894
		895	WANT (len);
		896	sv_catpvn (sv, dec->cur, len);
		897	dec->cur += len;
663	}	898	}
664	}	899	}
665	else	900	else
666	{	901	{
667	STRLEN len = decode_uint (dec);	902	STRLEN len = decode_uint (dec);
668		903
669	WANT (len);	904	WANT (len);
670	sv = newSVpvn (dec->cur, len);	905	sv = newSVpvn (dec->cur, len);
671	dec->cur += len;	906	dec->cur += len;
		907
		908	if (ecb_expect_false (dec->stringref)
		909	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		910	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
672	}	911	}
673		912
674	if (utf8)	913	if (utf8)
		914	{
		915	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		916	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		917	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		918
675	SvUTF8_on (sv);	919	SvUTF8_on (sv);
		920	}
676		921
677	return sv;	922	return sv;
678		923
679	fail:	924	fail:
680	SvREFCNT_dec (sv);	925	SvREFCNT_dec (sv);
…		…
682	}	927	}
683		928
684	static SV *	929	static SV *
685	decode_tagged (dec_t *dec)	930	decode_tagged (dec_t *dec)
686	{	931	{
		932	SV *sv = 0;
687	UV tag = decode_uint (dec);	933	UV tag = decode_uint (dec);
		934
		935	WANT (1);
		936
		937	switch (tag)
		938	{
		939	case CBOR_TAG_MAGIC:
688	SV *sv = decode_sv (dec);	940	sv = decode_sv (dec);
		941	break;
689		942
690	if (tag == CBOR_TAG_MAGIC)	943	case CBOR_TAG_INDIRECTION:
691	return sv;	944	sv = newRV_noinc (decode_sv (dec));
692	else if (tag == CBOR_TAG_PERL_OBJECT)	945	break;
693	{	946
		947	case CBOR_TAG_STRINGREF_NAMESPACE:
		948	{
		949	// do nmot use SAVETMPS/FREETMPS, as these will
		950	// erase mortalised caches, e.g. "shareable"
		951	ENTER;
		952
		953	SAVESPTR (dec->stringref);
		954	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		955
		956	sv = decode_sv (dec);
		957
		958	LEAVE;
		959	}
		960	break;
		961
		962	case CBOR_TAG_STRINGREF:
		963	{
		964	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		965	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		966
		967	UV idx = decode_uint (dec);
		968
		969	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		970	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		971
		972	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		973	}
		974	break;
		975
		976	case CBOR_TAG_VALUE_SHAREABLE:
		977	{
		978	if (ecb_expect_false (!dec->shareable))
		979	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		980
		981	if (dec->cbor.flags & F_ALLOW_CYCLES)
		982	{
		983	sv = newSV (0);
		984	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		985
		986	SV *osv = decode_sv (dec);
		987	sv_setsv (sv, osv);
		988	SvREFCNT_dec_NN (osv);
		989	}
		990	else
		991	{
		992	av_push (dec->shareable, &PL_sv_undef);
		993	int idx = AvFILLp (dec->shareable);
		994	sv = decode_sv (dec);
		995	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		996	}
		997	}
		998	break;
		999
		1000	case CBOR_TAG_VALUE_SHAREDREF:
		1001	{
		1002	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1003	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1004
		1005	UV idx = decode_uint (dec);
		1006
		1007	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1008	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1009
		1010	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1011
		1012	if (sv == &PL_sv_undef)
		1013	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
		1014	}
		1015	break;
		1016
		1017	case CBOR_TAG_PERL_OBJECT:
		1018	{
		1019	sv = decode_sv (dec);
		1020
694	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1021	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
695	ERR ("corrupted CBOR data (non-array perl object)");	1022	ERR ("corrupted CBOR data (non-array perl object)");
696		1023
697	AV *av = (AV *)SvRV (sv);	1024	AV *av = (AV *)SvRV (sv);
698	int len = av_len (av) + 1;	1025	int len = av_len (av) + 1;
699	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);	1026	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
700		1027
701	if (!stash)	1028	if (!stash)
702	ERR ("cannot decode perl-object (package does not exist)");	1029	ERR ("cannot decode perl-object (package does not exist)");
703		1030
704	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	1031	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
705		1032
706	if (!method)	1033	if (!method)
707	ERR ("cannot decode perl-object (package does not have a THAW method)");	1034	ERR ("cannot decode perl-object (package does not have a THAW method)");
708		1035
709	dSP;	1036	dSP;
710		1037
711	ENTER; SAVETMPS; PUSHMARK (SP);	1038	ENTER; SAVETMPS;
		1039	PUSHMARK (SP);
712	EXTEND (SP, len + 1);	1040	EXTEND (SP, len + 1);
713	// we re-bless the reference to get overload and other niceties right	1041	// we re-bless the reference to get overload and other niceties right
714	PUSHs (*av_fetch (av, 0, 1));	1042	PUSHs (*av_fetch (av, 0, 1));
715	PUSHs (sv_cbor);	1043	PUSHs (sv_cbor);
716		1044
717	int i;	1045	int i;
718		1046
719	for (i = 1; i < len; ++i)	1047	for (i = 1; i < len; ++i)
720	PUSHs (*av_fetch (av, i, 1));	1048	PUSHs (*av_fetch (av, i, 1));
721		1049
722	PUTBACK;	1050	PUTBACK;
723	call_sv ((SV *)GvCV (method), G_SCALAR);	1051	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
724	SPAGAIN;	1052	SPAGAIN;
725		1053
		1054	if (SvTRUE (ERRSV))
		1055	{
		1056	FREETMPS; LEAVE;
		1057	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1058	}
		1059
726	SvREFCNT_dec (sv);	1060	SvREFCNT_dec (sv);
727	sv = SvREFCNT_inc (POPs);	1061	sv = SvREFCNT_inc (POPs);
728		1062
729	PUTBACK;	1063	PUTBACK;
730		1064
731	FREETMPS; LEAVE;	1065	FREETMPS; LEAVE;
		1066	}
		1067	break;
732		1068
733	return sv;	1069	default:
734	}	1070	{
735	else	1071	sv = decode_sv (dec);
736	{	1072
		1073	dSP;
		1074	ENTER; SAVETMPS;
		1075	SAVESTACK_POS ();
		1076	PUSHMARK (SP);
		1077	EXTEND (SP, 2);
		1078	PUSHs (newSVuv (tag));
		1079	PUSHs (sv);
		1080
		1081	PUTBACK;
		1082	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1083	SPAGAIN;
		1084
		1085	if (SvTRUE (ERRSV))
		1086	{
		1087	FREETMPS; LEAVE;
		1088	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));
		1089	}
		1090
		1091	if (count)
		1092	{
		1093	SvREFCNT_dec (sv);
		1094	sv = SvREFCNT_inc (POPs);
		1095	}
		1096	else
		1097	{
737	AV *av = newAV ();	1098	AV *av = newAV ();
738	av_push (av, newSVuv (tag));	1099	av_push (av, newSVuv (tag));
739	av_push (av, sv);	1100	av_push (av, sv);
740		1101
741	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1102	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
742	? cbor_tagged_stash	1103	? cbor_tagged_stash
743	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1104	: gv_stashpv ("CBOR::XS::Tagged" , 1);
744
745	return sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1105	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1106	}
		1107
		1108	PUTBACK;
		1109
		1110	FREETMPS; LEAVE;
		1111	}
		1112	break;
746	}	1113	}
		1114
		1115	return sv;
747		1116
748	fail:	1117	fail:
749	SvREFCNT_dec (sv);	1118	SvREFCNT_dec (sv);
750	return &PL_sv_undef;	1119	return &PL_sv_undef;
751	}	1120	}
…		…
753	static SV *	1122	static SV *
754	decode_sv (dec_t *dec)	1123	decode_sv (dec_t *dec)
755	{	1124	{
756	WANT (1);	1125	WANT (1);
757		1126
758	switch (*dec->cur >> 5)	1127	switch (*dec->cur >> MAJOR_SHIFT)
759	{	1128	{
760	case 0: // unsigned int	1129	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
761	return newSVuv (decode_uint (dec));	1130	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
762	case 1: // negative int	1131	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
763	return newSViv (-1 - (IV)decode_uint (dec));	1132	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
764	case 2: // octet string	1133	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
765	return decode_str (dec, 0);	1134	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
766	case 3: // utf-8 string	1135	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
767	return decode_str (dec, 1);	1136
768	case 4: // array	1137	case MAJOR_MISC >> MAJOR_SHIFT:
769	return decode_av (dec);
770	case 5: // map
771	return decode_hv (dec);
772	case 6: // tag
773	return decode_tagged (dec);
774	case 7: // misc
775	switch (*dec->cur++ & 31)	1138	switch (*dec->cur++ & MINOR_MASK)
776	{	1139	{
777	case 20:	1140	case SIMPLE_FALSE:
778	#if CBOR_SLOW	1141	#if CBOR_SLOW
779	types_false = get_bool ("Types::Serialiser::false");	1142	types_false = get_bool ("Types::Serialiser::false");
780	#endif	1143	#endif
781	return newSVsv (types_false);	1144	return newSVsv (types_false);
782	case 21:	1145	case SIMPLE_TRUE:
783	#if CBOR_SLOW	1146	#if CBOR_SLOW
784	types_true = get_bool ("Types::Serialiser::true");	1147	types_true = get_bool ("Types::Serialiser::true");
785	#endif	1148	#endif
786	return newSVsv (types_true);	1149	return newSVsv (types_true);
787	case 22:	1150	case SIMPLE_NULL:
788	return newSVsv (&PL_sv_undef);	1151	return newSVsv (&PL_sv_undef);
789	case 23:	1152	case SIMPLE_UNDEF:
790	#if CBOR_SLOW	1153	#if CBOR_SLOW
791	types_error = get_bool ("Types::Serialiser::error");	1154	types_error = get_bool ("Types::Serialiser::error");
792	#endif	1155	#endif
793	return newSVsv (types_error);	1156	return newSVsv (types_error);
794		1157
795	case 25:	1158	case MISC_FLOAT16:
796	{	1159	{
797	WANT (2);	1160	WANT (2);
798		1161
799	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1162	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
800	dec->cur += 2;	1163	dec->cur += 2;
801		1164
802	return newSVnv (ecb_binary16_to_float (fp));	1165	return newSVnv (ecb_binary16_to_float (fp));
803	}	1166	}
804		1167
805	case 26:	1168	case MISC_FLOAT32:
806	{	1169	{
807	uint32_t fp;	1170	uint32_t fp;
808	WANT (4);	1171	WANT (4);
809	memcpy (&fp, dec->cur, 4);	1172	memcpy (&fp, dec->cur, 4);
810	dec->cur += 4;	1173	dec->cur += 4;
…		…
813	fp = ecb_bswap32 (fp);	1176	fp = ecb_bswap32 (fp);
814		1177
815	return newSVnv (ecb_binary32_to_float (fp));	1178	return newSVnv (ecb_binary32_to_float (fp));
816	}	1179	}
817		1180
818	case 27:	1181	case MISC_FLOAT64:
819	{	1182	{
820	uint64_t fp;	1183	uint64_t fp;
821	WANT (8);	1184	WANT (8);
822	memcpy (&fp, dec->cur, 8);	1185	memcpy (&fp, dec->cur, 8);
823	dec->cur += 8;	1186	dec->cur += 8;
…		…
826	fp = ecb_bswap64 (fp);	1189	fp = ecb_bswap64 (fp);
827		1190
828	return newSVnv (ecb_binary64_to_double (fp));	1191	return newSVnv (ecb_binary64_to_double (fp));
829	}	1192	}
830		1193
831	// 0..19 unassigned	1194	// 0..19 unassigned simple
832	// 24 reserved + unassigned (reserved values are not encodable)	1195	// 24 reserved + unassigned simple (reserved values are not encodable)
		1196	// 28-30 unassigned misc
		1197	// 31 break code
833	default:	1198	default:
834	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1199	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
835	}	1200	}
836		1201
837	break;	1202	break;
838	}	1203	}
839		1204
…		…
842	}	1207	}
843		1208
844	static SV *	1209	static SV *
845	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1210	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
846	{	1211	{
847	dec_t dec;	1212	dec_t dec = { 0 };
848	SV *sv;	1213	SV *sv;
		1214	STRLEN len;
		1215	char *data = SvPVbyte (string, len);
849		1216
850	/* work around bugs in 5.10 where manipulating magic values
851	* makes perl ignore the magic in subsequent accesses.
852	* also make a copy of non-PV values, to get them into a clean
853	* state (SvPV should do that, but it's buggy, see below).
854	*/
855	/*SvGETMAGIC (string);*/
856	if (SvMAGICAL (string) || !SvPOK (string))
857	string = sv_2mortal (newSVsv (string));
858
859	SvUPGRADE (string, SVt_PV);
860
861	/* work around a bug in perl 5.10, which causes SvCUR to fail an
862	* assertion with -DDEBUGGING, although SvCUR is documented to
863	* return the xpv_cur field which certainly exists after upgrading.
864	* according to nicholas clark, calling SvPOK fixes this.
865	* But it doesn't fix it, so try another workaround, call SvPV_nolen
866	* and hope for the best.
867	* Damnit, SvPV_nolen still trips over yet another assertion. This
868	* assertion business is seriously broken, try yet another workaround
869	* for the broken -DDEBUGGING.
870	*/
871	{
872	#ifdef DEBUGGING
873	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
874	#else
875	STRLEN offset = SvCUR (string);
876	#endif
877
878	if (offset > cbor->max_size && cbor->max_size)	1217	if (len > cbor->max_size && cbor->max_size)
879	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1218	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
880	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1219	(unsigned long)len, (unsigned long)cbor->max_size);
881	}
882
883	sv_utf8_downgrade (string, 0);
884		1220
885	dec.cbor = *cbor;	1221	dec.cbor = *cbor;
886	dec.cur = (U8 *)SvPVX (string);	1222	dec.cur = (U8 *)data;
887	dec.end = (U8 *)SvEND (string);	1223	dec.end = (U8 *)data + len;
888	dec.err = 0;
889	dec.depth = 0;
890		1224
891	sv = decode_sv (&dec);	1225	sv = decode_sv (&dec);
892		1226
893	if (offset_return)	1227	if (offset_return)
894	*offset_return = dec.cur;	1228	*offset_return = dec.cur;
…		…
897	if (dec.cur != dec.end && !dec.err)	1231	if (dec.cur != dec.end && !dec.err)
898	dec.err = "garbage after CBOR object";	1232	dec.err = "garbage after CBOR object";
899		1233
900	if (dec.err)	1234	if (dec.err)
901	{	1235	{
		1236	if (dec.shareable)
		1237	{
		1238	// need to break cyclic links, which whould all be in shareable
		1239	int i;
		1240	SV **svp;
		1241
		1242	for (i = av_len (dec.shareable) + 1; i--; )
		1243	if ((svp = av_fetch (dec.shareable, i, 0)))
		1244	sv_setsv (*svp, &PL_sv_undef);
		1245	}
		1246
902	SvREFCNT_dec (sv);	1247	SvREFCNT_dec (sv);
903	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur);	1248	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
904	}	1249	}
905		1250
906	sv = sv_2mortal (sv);	1251	sv = sv_2mortal (sv);
907		1252
908	return sv;	1253	return sv;
909	}	1254	}
910		1255
		1256	/////////////////////////////////////////////////////////////////////////////
		1257	// incremental parser
		1258
		1259	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1260
		1261	// returns 0 for notyet, 1 for success or error
		1262	static int
		1263	incr_parse (CBOR *self, SV *cborstr)
		1264	{
		1265	STRLEN cur;
		1266	SvPV (cborstr, cur);
		1267
		1268	while (ecb_expect_true (self->incr_need <= cur))
		1269	{
		1270	// table of integer count bytes
		1271	static I8 incr_len[MINOR_MASK + 1] = {
		1272	0, 0, 0, 0, 0, 0, 0, 0,
		1273	0, 0, 0, 0, 0, 0, 0, 0,
		1274	0, 0, 0, 0, 0, 0, 0, 0,
		1275	1, 2, 4, 8,-1,-1,-1,-2
		1276	};
		1277
		1278	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1279	U8 m = *p & MINOR_MASK;
		1280	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1281	I8 ilen = incr_len[m];
		1282
		1283	self->incr_need = self->incr_pos + 1;
		1284
		1285	if (ecb_expect_false (ilen < 0))
		1286	{
		1287	if (m != MINOR_INDEF)
		1288	return 1; // error
		1289
		1290	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1291	{
		1292	if (count >= 0)
		1293	return 1; // error
		1294
		1295	count = 1;
		1296	}
		1297	else
		1298	{
		1299	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1300	count = -1;
		1301	}
		1302	}
		1303	else
		1304	{
		1305	self->incr_need += ilen;
		1306	if (ecb_expect_false (self->incr_need > cur))
		1307	return 0;
		1308
		1309	int major = *p >> MAJOR_SHIFT;
		1310
		1311	switch (major)
		1312	{
		1313	case MAJOR_TAG >> MAJOR_SHIFT:
		1314	++count; // tags merely prefix another value
		1315	break;
		1316
		1317	case MAJOR_BYTES >> MAJOR_SHIFT:
		1318	case MAJOR_TEXT >> MAJOR_SHIFT:
		1319	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1320	case MAJOR_MAP >> MAJOR_SHIFT:
		1321	{
		1322	UV len;
		1323
		1324	if (ecb_expect_false (ilen))
		1325	{
		1326	len = 0;
		1327
		1328	do {
		1329	len = (len << 8) | *++p;
		1330	} while (--ilen);
		1331	}
		1332	else
		1333	len = m;
		1334
		1335	switch (major)
		1336	{
		1337	case MAJOR_BYTES >> MAJOR_SHIFT:
		1338	case MAJOR_TEXT >> MAJOR_SHIFT:
		1339	self->incr_need += len;
		1340	if (ecb_expect_false (self->incr_need > cur))
		1341	return 0;
		1342
		1343	break;
		1344
		1345	case MAJOR_MAP >> MAJOR_SHIFT:
		1346	len <<= 1;
		1347	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1348	if (len)
		1349	{
		1350	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1351	count = len + 1;
		1352	}
		1353	break;
		1354	}
		1355	}
		1356	}
		1357	}
		1358
		1359	self->incr_pos = self->incr_need;
		1360
		1361	if (count > 0)
		1362	{
		1363	while (!--count)
		1364	{
		1365	if (!AvFILLp (self->incr_count))
		1366	return 1; // done
		1367
		1368	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1369	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1370	}
		1371
		1372	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1373	}
		1374	}
		1375
		1376	return 0;
		1377	}
		1378
		1379
911	/////////////////////////////////////////////////////////////////////////////	1380	/////////////////////////////////////////////////////////////////////////////
912	// XS interface functions	1381	// XS interface functions
913		1382
914	MODULE = CBOR::XS PACKAGE = CBOR::XS	1383	MODULE = CBOR::XS PACKAGE = CBOR::XS
915		1384
…		…
923		1392
924	types_true = get_bool ("Types::Serialiser::true" );	1393	types_true = get_bool ("Types::Serialiser::true" );
925	types_false = get_bool ("Types::Serialiser::false");	1394	types_false = get_bool ("Types::Serialiser::false");
926	types_error = get_bool ("Types::Serialiser::error");	1395	types_error = get_bool ("Types::Serialiser::error");
927		1396
		1397	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1398
928	sv_cbor = newSVpv ("CBOR", 0);	1399	sv_cbor = newSVpv ("CBOR", 0);
929	SvREADONLY_on (sv_cbor);	1400	SvREADONLY_on (sv_cbor);
		1401
		1402	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
930	}	1403	}
931		1404
932	PROTOTYPES: DISABLE	1405	PROTOTYPES: DISABLE
933		1406
934	void CLONE (...)	1407	void CLONE (...)
…		…
952		1425
953	void shrink (CBOR *self, int enable = 1)	1426	void shrink (CBOR *self, int enable = 1)
954	ALIAS:	1427	ALIAS:
955	shrink = F_SHRINK	1428	shrink = F_SHRINK
956	allow_unknown = F_ALLOW_UNKNOWN	1429	allow_unknown = F_ALLOW_UNKNOWN
		1430	allow_sharing = F_ALLOW_SHARING
		1431	allow_cycles = F_ALLOW_CYCLES
		1432	pack_strings = F_PACK_STRINGS
		1433	text_keys = F_TEXT_KEYS
		1434	text_strings = F_TEXT_STRINGS
		1435	validate_utf8 = F_VALIDATE_UTF8
957	PPCODE:	1436	PPCODE:
958	{	1437	{
959	if (enable)	1438	if (enable)
960	self->flags |= ix;	1439	self->flags |= ix;
961	else	1440	else
…		…
966		1445
967	void get_shrink (CBOR *self)	1446	void get_shrink (CBOR *self)
968	ALIAS:	1447	ALIAS:
969	get_shrink = F_SHRINK	1448	get_shrink = F_SHRINK
970	get_allow_unknown = F_ALLOW_UNKNOWN	1449	get_allow_unknown = F_ALLOW_UNKNOWN
		1450	get_allow_sharing = F_ALLOW_SHARING
		1451	get_allow_cycles = F_ALLOW_CYCLES
		1452	get_pack_strings = F_PACK_STRINGS
		1453	get_text_keys = F_TEXT_KEYS
		1454	get_text_strings = F_TEXT_STRINGS
		1455	get_validate_utf8 = F_VALIDATE_UTF8
971	PPCODE:	1456	PPCODE:
972	XPUSHs (boolSV (self->flags & ix));	1457	XPUSHs (boolSV (self->flags & ix));
973		1458
974	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1459	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
975	PPCODE:	1460	PPCODE:
…		…
988	XPUSHs (ST (0));	1473	XPUSHs (ST (0));
989		1474
990	int get_max_size (CBOR *self)	1475	int get_max_size (CBOR *self)
991	CODE:	1476	CODE:
992	RETVAL = self->max_size;	1477	RETVAL = self->max_size;
		1478	OUTPUT:
		1479	RETVAL
		1480
		1481	void filter (CBOR *self, SV *filter = 0)
		1482	PPCODE:
		1483	SvREFCNT_dec (self->filter);
		1484	self->filter = filter ? newSVsv (filter) : filter;
		1485	XPUSHs (ST (0));
		1486
		1487	SV *get_filter (CBOR *self)
		1488	CODE:
		1489	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
993	OUTPUT:	1490	OUTPUT:
994	RETVAL	1491	RETVAL
995		1492
996	void encode (CBOR *self, SV *scalar)	1493	void encode (CBOR *self, SV *scalar)
997	PPCODE:	1494	PPCODE:
…		…
1012	EXTEND (SP, 2);	1509	EXTEND (SP, 2);
1013	PUSHs (sv);	1510	PUSHs (sv);
1014	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1511	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1015	}	1512	}
1016		1513
		1514	void incr_parse (CBOR *self, SV *cborstr)
		1515	ALIAS:
		1516	incr_parse_multiple = 1
		1517	PPCODE:
		1518	{
		1519	if (SvUTF8 (cborstr))
		1520	sv_utf8_downgrade (cborstr, 0);
		1521
		1522	if (!self->incr_count)
		1523	{
		1524	self->incr_count = newAV ();
		1525	self->incr_pos = 0;
		1526	self->incr_need = 1;
		1527
		1528	av_push (self->incr_count, newSViv (1));
		1529	}
		1530
		1531	do
		1532	{
		1533	if (!incr_parse (self, cborstr))
		1534	{
		1535	if (self->incr_need > self->max_size && self->max_size)
		1536	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1537	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1538
		1539	break;
		1540	}
		1541
		1542	SV *sv;
		1543	char *offset;
		1544
		1545	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1546	XPUSHs (sv);
		1547
		1548	sv_chop (cborstr, offset);
		1549
		1550	av_clear (self->incr_count);
		1551	av_push (self->incr_count, newSViv (1));
		1552
		1553	self->incr_pos = 0;
		1554	self->incr_need = self->incr_pos + 1;
		1555	}
		1556	while (ix);
		1557	}
		1558
		1559	void incr_reset (CBOR *self)
		1560	CODE:
		1561	{
		1562	SvREFCNT_dec (self->incr_count);
		1563	self->incr_count = 0;
		1564	}
		1565
		1566	void DESTROY (CBOR *self)
		1567	PPCODE:
		1568	cbor_free (self);
		1569
1017	PROTOTYPES: ENABLE	1570	PROTOTYPES: ENABLE
1018		1571
1019	void encode_cbor (SV *scalar)	1572	void encode_cbor (SV *scalar)
		1573	ALIAS:
		1574	encode_cbor = 0
		1575	encode_cbor_sharing = F_ALLOW_SHARING
1020	PPCODE:	1576	PPCODE:
1021	{	1577	{
1022	CBOR cbor;	1578	CBOR cbor;
1023	cbor_init (&cbor);	1579	cbor_init (&cbor);
		1580	cbor.flags |= ix;
1024	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1581	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1025	XPUSHs (scalar);	1582	XPUSHs (scalar);
1026	}	1583	}
1027		1584
1028	void decode_cbor (SV *cborstr)	1585	void decode_cbor (SV *cborstr)

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