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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.26 by root, Fri Nov 22 09:40:13 2013 UTC vs.
Revision 1.62 by root, Sat Nov 26 02:11:52 2016 UTC

…		…
6	#include <string.h>	6	#include <string.h>
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	#include <inttypes.h>
11		12
		13	#define ECB_NO_THREADS 1
12	#include "ecb.h"	14	#include "ecb.h"
13		15
14	// compatibility with perl <5.18	16	// compatibility with perl <5.18
15	#ifndef HvNAMELEN_get	17	#ifndef HvNAMELEN_get
16	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))	18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
…		…
19	# define HvNAMELEN(hv) HvNAMELEN_get (hv)	21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
20	#endif	22	#endif
21	#ifndef HvNAMEUTF8	23	#ifndef HvNAMEUTF8
22	# define HvNAMEUTF8(hv) 0	24	# define HvNAMEUTF8(hv) 0
23	#endif	25	#endif
		26	#ifndef SvREFCNT_dec_NN
		27	# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
		28	#endif
		29
		30	// known major and minor types
		31	enum cbor_type
		32	{
		33	MAJOR_SHIFT = 5,
		34	MINOR_MASK = 0x1f,
		35
		36	MAJOR_POS_INT = 0 << MAJOR_SHIFT,
		37	MAJOR_NEG_INT = 1 << MAJOR_SHIFT,
		38	MAJOR_BYTES = 2 << MAJOR_SHIFT,
		39	MAJOR_TEXT = 3 << MAJOR_SHIFT,
		40	MAJOR_ARRAY = 4 << MAJOR_SHIFT,
		41	MAJOR_MAP = 5 << MAJOR_SHIFT,
		42	MAJOR_TAG = 6 << MAJOR_SHIFT,
		43	MAJOR_MISC = 7 << MAJOR_SHIFT,
		44
		45	// INT/STRING/ARRAY/MAP subtypes
		46	LENGTH_EXT1 = 24,
		47	LENGTH_EXT2 = 25,
		48	LENGTH_EXT4 = 26,
		49	LENGTH_EXT8 = 27,
		50
		51	// SIMPLE types (effectively MISC subtypes)
		52	SIMPLE_FALSE = 20,
		53	SIMPLE_TRUE = 21,
		54	SIMPLE_NULL = 22,
		55	SIMPLE_UNDEF = 23,
		56
		57	// MISC subtype (unused)
		58	MISC_EXT1 = 24,
		59	MISC_FLOAT16 = 25,
		60	MISC_FLOAT32 = 26,
		61	MISC_FLOAT64 = 27,
		62
		63	// BYTES/TEXT/ARRAY/MAP
		64	MINOR_INDEF = 31,
		65	};
24		66
25	// known tags	67	// known tags
26	enum cbor_tag	68	enum cbor_tag
27	{	69	{
28	// inofficial extensions (pending iana registration)	70	// extensions
		71	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
29	CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object	72	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
30	CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object	73	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
31	CBOR_TAG_VALUE_SHAREABLE = 26, // http://cbor.schmorp.de/value-sharing	74	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
32	CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing	75	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
33	CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref	76	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
34	CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref
35	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection	77	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
36		78
37	// rfc7049	79	// rfc7049
38	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	80	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
39	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	81	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
40	CBOR_TAG_POS_BIGNUM = 2, // byte string	82	CBOR_TAG_POS_BIGNUM = 2, // byte string
41	CBOR_TAG_NEG_BIGNUM = 3, // byte string	83	CBOR_TAG_NEG_BIGNUM = 3, // byte string
42	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	84	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
43	CBOR_TAG_BIGFLOAT = 5, // array	85	CBOR_TAG_BIGFLOAT = 5, // array
44		86
45	CBOR_TAG_CONV_B64U = 21, // base64url, any	87	CBOR_TAG_CONV_B64U = 21, // base64url, any
46	CBOR_TAG_CONV_B64 = 22, // base64, any	88	CBOR_TAG_CONV_B64 = 22, // base64, any
47	CBOR_TAG_CONV_HEX = 23, // base16, any	89	CBOR_TAG_CONV_HEX = 23, // base16, any
48	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	90	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
49		91
50	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	92	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
51	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	93	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
52	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	94	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
53	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	95	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
54	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	96	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
55		97
56	CBOR_TAG_MAGIC = 55799 // self-describe cbor	98	CBOR_TAG_MAGIC = 55799, // self-describe cbor
57	};	99	};
58		100
59	#define F_SHRINK 0x00000001UL	101	#define F_SHRINK 0x00000001UL
60	#define F_ALLOW_UNKNOWN 0x00000002UL	102	#define F_ALLOW_UNKNOWN 0x00000002UL
61	#define F_ALLOW_SHARING 0x00000004UL //TODO	103	#define F_ALLOW_SHARING 0x00000004UL
62	#define F_ALLOW_STRINGREF 0x00000008UL //TODO	104	#define F_ALLOW_CYCLES 0x00000008UL
		105	#define F_FORBID_OBJECTS 0x00000010UL
		106	#define F_PACK_STRINGS 0x00000020UL
		107	#define F_TEXT_KEYS 0x00000040UL
		108	#define F_TEXT_STRINGS 0x00000080UL
		109	#define F_VALIDATE_UTF8 0x00000100UL
63		110
64	#define INIT_SIZE 32 // initial scalar size to be allocated	111	#define INIT_SIZE 32 // initial scalar size to be allocated
65		112
66	#define SB do {	113	#define SB do {
67	#define SE } while (0)	114	#define SE } while (0)
…		…
79	# define CBOR_SLOW 0	126	# define CBOR_SLOW 0
80	# define CBOR_STASH cbor_stash	127	# define CBOR_STASH cbor_stash
81	#endif	128	#endif
82		129
83	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::	130	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
84	static SV *types_true, *types_false, *types_error, *sv_cbor;	131	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
85		132
86	typedef struct {	133	typedef struct {
87	U32 flags;	134	U32 flags;
88	U32 max_depth;	135	U32 max_depth;
89	STRLEN max_size;	136	STRLEN max_size;
		137	SV *filter;
		138
		139	// for the incremental parser
		140	STRLEN incr_pos; // the current offset into the text
		141	STRLEN incr_need; // minimum bytes needed to decode
		142	AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef.
90	} CBOR;	143	} CBOR;
91		144
92	ecb_inline void	145	ecb_inline void
93	cbor_init (CBOR *cbor)	146	cbor_init (CBOR *cbor)
94	{	147	{
95	Zero (cbor, 1, CBOR);	148	Zero (cbor, 1, CBOR);
96	cbor->max_depth = 512;	149	cbor->max_depth = 512;
		150	}
		151
		152	ecb_inline void
		153	cbor_free (CBOR *cbor)
		154	{
		155	SvREFCNT_dec (cbor->filter);
		156	SvREFCNT_dec (cbor->incr_count);
97	}	157	}
98		158
99	/////////////////////////////////////////////////////////////////////////////	159	/////////////////////////////////////////////////////////////////////////////
100	// utility functions	160	// utility functions
101		161
…		…
127		187
128	// minimum length of a string to be registered for stringref	188	// minimum length of a string to be registered for stringref
129	ecb_inline int	189	ecb_inline int
130	minimum_string_length (UV idx)	190	minimum_string_length (UV idx)
131	{	191	{
132	return idx > 23	192	return idx <= 23 ? 3
133	? idx > 0xffU	193	: idx <= 0xffU ? 4
134	? idx > 0xffffU	194	: idx <= 0xffffU ? 5
135	? idx > 0xffffffffU	195	: idx <= 0xffffffffU ? 7
136	? 7	196	: 11;
137	: 6
138	: 5
139	: 4
140	: 3;
141	}	197	}
142		198
143	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
144	// encoder	200	// encoder
145		201
…		…
158	} enc_t;	214	} enc_t;
159		215
160	ecb_inline void	216	ecb_inline void
161	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
162	{	218	{
163	if (ecb_expect_false (enc->cur + len >= enc->end))	219	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
164	{	220	{
165	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	221	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
166	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	222	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
167	enc->cur = SvPVX (enc->sv) + cur;	223	enc->cur = SvPVX (enc->sv) + cur;
168	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	224	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
179	static void	235	static void
180	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
181	{	237	{
182	need (enc, 9);	238	need (enc, 9);
183		239
184	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
185	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
186	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
187	{	243	{
188	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
189	*enc->cur++ = len;	245	*enc->cur++ = len;
190	}	246	}
191	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
192	{	248	{
193	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
194	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
195	*enc->cur++ = len;	251	*enc->cur++ = len;
196	}	252	}
197	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
198	{	254	{
199	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
200	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
201	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
202	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
203	*enc->cur++ = len;	259	*enc->cur++ = len;
204	}	260	}
205	else	261	else
206	{	262	{
207	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
208	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
209	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
210	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
211	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
212	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
217	}	273	}
218		274
219	ecb_inline void	275	ecb_inline void
220	encode_tag (enc_t *enc, UV tag)	276	encode_tag (enc_t *enc, UV tag)
221	{	277	{
222	encode_uint (enc, 0xc0, tag);	278	encode_uint (enc, MAJOR_TAG, tag);
223	}	279	}
224		280
225	static void	281	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		282	ecb_noinline static void
226	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
227	{	284	{
		285	STRLEN ulen = len;
		286	U8 *p, *pend = (U8 *)str + len;
		287
		288	for (p = (U8 *)str; p < pend; ++p)
		289	ulen += *p >> 7; // count set high bits
		290
		291	encode_uint (enc, MAJOR_TEXT, ulen);
		292
		293	need (enc, ulen);
		294	for (p = (U8 *)str; p < pend; ++p)
		295	if (*p < 0x80)
		296	*enc->cur++ = *p;
		297	else
		298	{
		299	*enc->cur++ = 0xc0 + (*p >> 6);
		300	*enc->cur++ = 0x80 + (*p & 63);
		301	}
		302	}
		303
		304	ecb_inline void
		305	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		306	{
		307	if (ecb_expect_false (upgrade_utf8))
		308	if (!utf8)
		309	{
		310	encode_str_utf8 (enc, utf8, str, len);
		311	return;
		312	}
		313
		314	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
		315	need (enc, len);
		316	memcpy (enc->cur, str, len);
		317	enc->cur += len;
		318	}
		319
		320	ecb_inline void
		321	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		322	{
228	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_STRINGREF))	323	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
229	{	324	{
230	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	325	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
231		326
232	if (SvOK (*svp))	327	if (SvOK (*svp))
233	{	328	{
234	// already registered, use stringref	329	// already registered, use stringref
235	encode_tag (enc, CBOR_TAG_STRINGREF);	330	encode_tag (enc, CBOR_TAG_STRINGREF);
236	encode_uint (enc, 0x00, SvUV (*svp));	331	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
237	return;	332	return;
238	}	333	}
239	else if (len >= minimum_string_length (enc->stringref_idx))	334	else if (len >= minimum_string_length (enc->stringref_idx))
240	{	335	{
241	// register only	336	// register only
242	sv_setuv (*svp, enc->stringref_idx);	337	sv_setuv (*svp, enc->stringref_idx);
243	++enc->stringref_idx;	338	++enc->stringref_idx;
244	}	339	}
245	}	340	}
246		341
247	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	342	encode_str (enc, upgrade_utf8, utf8, str, len);
248	need (enc, len);
249	memcpy (enc->cur, str, len);
250	enc->cur += len;
251	}	343	}
252		344
253	static void encode_sv (enc_t *enc, SV *sv);	345	static void encode_sv (enc_t *enc, SV *sv);
254		346
255	static void	347	static void
…		…
260	if (enc->depth >= enc->cbor.max_depth)	352	if (enc->depth >= enc->cbor.max_depth)
261	croak (ERR_NESTING_EXCEEDED);	353	croak (ERR_NESTING_EXCEEDED);
262		354
263	++enc->depth;	355	++enc->depth;
264		356
265	encode_uint (enc, 0x80, len + 1);	357	encode_uint (enc, MAJOR_ARRAY, len + 1);
266		358
		359	if (SvMAGICAL (av))
267	for (i = 0; i <= len; ++i)	360	for (i = 0; i <= len; ++i)
268	{	361	{
269	SV **svp = av_fetch (av, i, 0);	362	SV **svp = av_fetch (av, i, 0);
270	encode_sv (enc, svp ? *svp : &PL_sv_undef);	363	encode_sv (enc, svp ? *svp : &PL_sv_undef);
271	}	364	}
		365	else
		366	for (i = 0; i <= len; ++i)
		367	{
		368	SV *sv = AvARRAY (av)[i];
		369	encode_sv (enc, sv ? sv : &PL_sv_undef);
		370	}
272		371
273	--enc->depth;	372	--enc->depth;
274	}	373	}
275		374
276	static void	375	static void
…		…
285		384
286	int pairs = hv_iterinit (hv);	385	int pairs = hv_iterinit (hv);
287	int mg = SvMAGICAL (hv);	386	int mg = SvMAGICAL (hv);
288		387
289	if (mg)	388	if (mg)
290	encode_ch (enc, 0xa0 | 31);	389	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
291	else	390	else
292	encode_uint (enc, 0xa0, pairs);	391	encode_uint (enc, MAJOR_MAP, pairs);
293		392
294	while ((he = hv_iternext (hv)))	393	while ((he = hv_iternext (hv)))
295	{	394	{
296	if (HeKLEN (he) == HEf_SVKEY)	395	if (HeKLEN (he) == HEf_SVKEY)
297	encode_sv (enc, HeSVKEY (he));	396	encode_sv (enc, HeSVKEY (he));
298	else	397	else
299	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	398	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
300		399
301	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	400	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
302	}	401	}
303		402
304	if (mg)	403	if (mg)
305	encode_ch (enc, 0xe0 | 31);	404	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
306		405
307	--enc->depth;	406	--enc->depth;
308	}	407	}
309		408
310	// encode objects, arrays and special \0=false and \1=true values.	409	// encode objects, arrays and special \0=false and \1=true values.
311	static void	410	static void
312	encode_rv (enc_t *enc, SV *sv)	411	encode_rv (enc_t *enc, SV *sv)
313	{	412	{
314	SvGETMAGIC (sv);	413	SvGETMAGIC (sv);
315
316	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)
317	&& ecb_expect_false (SvREFCNT (sv) > 1))
318	{
319	if (!enc->shareable)
320	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
321
322	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
323
324	if (SvOK (*svp))
325	{
326	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
327	encode_uint (enc, 0x00, SvUV (*svp));
328	return;
329	}
330	else
331	{
332	sv_setuv (*svp, enc->shareable_idx);
333	++enc->shareable_idx;
334	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
335	}
336	}
337		414
338	svtype svt = SvTYPE (sv);	415	svtype svt = SvTYPE (sv);
339		416
340	if (ecb_expect_false (SvOBJECT (sv)))	417	if (ecb_expect_false (SvOBJECT (sv)))
341	{	418	{
…		…
348	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	425	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
349	? cbor_tagged_stash	426	? cbor_tagged_stash
350	: gv_stashpv ("CBOR::XS::Tagged" , 1);	427	: gv_stashpv ("CBOR::XS::Tagged" , 1);
351		428
352	HV *stash = SvSTASH (sv);	429	HV *stash = SvSTASH (sv);
353	GV *method;
354		430
355	if (stash == boolean_stash)	431	if (stash == boolean_stash)
356	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	432	{
		433	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		434	return;
		435	}
357	else if (stash == error_stash)	436	else if (stash == error_stash)
358	encode_ch (enc, 0xe0 | 23);	437	{
		438	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		439	return;
		440	}
359	else if (stash == tagged_stash)	441	else if (stash == tagged_stash)
360	{	442	{
361	if (svt != SVt_PVAV)	443	if (svt != SVt_PVAV)
362	croak ("encountered CBOR::XS::Tagged object that isn't an array");	444	croak ("encountered CBOR::XS::Tagged object that isn't an array");
363		445
364	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	446	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
365	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	447	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		448
		449	return;
		450	}
		451	}
		452
		453	if (ecb_expect_false (SvREFCNT (sv) > 1)
		454	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		455	{
		456	if (!enc->shareable)
		457	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		458
		459	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		460
		461	if (SvOK (*svp))
366	}	462	{
		463	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		464	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		465	return;
		466	}
		467	else
		468	{
		469	sv_setuv (*svp, enc->shareable_idx);
		470	++enc->shareable_idx;
		471	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		472	}
		473	}
		474
		475	if (ecb_expect_false (SvOBJECT (sv)))
		476	{
		477	HV *stash = SvSTASH (sv);
		478	GV *method;
		479
		480	if (enc->cbor.flags & F_FORBID_OBJECTS)
		481	croak ("encountered object '%s', but forbid_objects is enabled",
		482	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
367	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	483	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
368	{	484	{
369	dSP;	485	dSP;
370		486
371	ENTER; SAVETMPS; PUSHMARK (SP);	487	ENTER; SAVETMPS;
		488	PUSHMARK (SP);
372	// we re-bless the reference to get overload and other niceties right	489	// we re-bless the reference to get overload and other niceties right
373	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	490	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
374		491
375	PUTBACK;	492	PUTBACK;
376	// G_SCALAR ensures that return value is 1	493	// G_SCALAR ensures that return value is 1
…		…
389	}	506	}
390	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	507	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
391	{	508	{
392	dSP;	509	dSP;
393		510
394	ENTER; SAVETMPS; PUSHMARK (SP);	511	ENTER; SAVETMPS;
		512	SAVESTACK_POS ();
		513	PUSHMARK (SP);
395	EXTEND (SP, 2);	514	EXTEND (SP, 2);
396	// we re-bless the reference to get overload and other niceties right	515	// we re-bless the reference to get overload and other niceties right
397	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	516	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
398	PUSHs (sv_cbor);	517	PUSHs (sv_cbor);
399		518
…		…
404	// catch this surprisingly common error	523	// catch this surprisingly common error
405	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	524	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
406	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	525	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
407		526
408	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	527	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
409	encode_uint (enc, 0x80, count + 1);	528	encode_uint (enc, MAJOR_ARRAY, count + 1);
410	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	529	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
411		530
412	while (count)	531	while (count)
413	encode_sv (enc, SP[1 - count--]);	532	encode_sv (enc, SP[1 - count--]);
414		533
415	PUTBACK;	534	PUTBACK;
…		…
436	{	555	{
437	double nv = SvNVX (sv);	556	double nv = SvNVX (sv);
438		557
439	need (enc, 9);	558	need (enc, 9);
440		559
441	if (ecb_expect_false (nv == (U32)nv))	560	if (ecb_expect_false (nv == (NV)(U32)nv))
442	encode_uint (enc, 0x00, (U32)nv);	561	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
443	//TODO: maybe I32?	562	//TODO: maybe I32?
444	else if (ecb_expect_false (nv == (float)nv))	563	else if (ecb_expect_false (nv == (float)nv))
445	{	564	{
446	uint32_t fp = ecb_float_to_binary32 (nv);	565	uint32_t fp = ecb_float_to_binary32 (nv);
447		566
448	*enc->cur++ = 0xe0 | 26;	567	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
449		568
450	if (!ecb_big_endian ())	569	if (!ecb_big_endian ())
451	fp = ecb_bswap32 (fp);	570	fp = ecb_bswap32 (fp);
452		571
453	memcpy (enc->cur, &fp, 4);	572	memcpy (enc->cur, &fp, 4);
…		…
455	}	574	}
456	else	575	else
457	{	576	{
458	uint64_t fp = ecb_double_to_binary64 (nv);	577	uint64_t fp = ecb_double_to_binary64 (nv);
459		578
460	*enc->cur++ = 0xe0 | 27;	579	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
461		580
462	if (!ecb_big_endian ())	581	if (!ecb_big_endian ())
463	fp = ecb_bswap64 (fp);	582	fp = ecb_bswap64 (fp);
464		583
465	memcpy (enc->cur, &fp, 8);	584	memcpy (enc->cur, &fp, 8);
…		…
474		593
475	if (SvPOKp (sv))	594	if (SvPOKp (sv))
476	{	595	{
477	STRLEN len;	596	STRLEN len;
478	char *str = SvPV (sv, len);	597	char *str = SvPV (sv, len);
479	encode_str (enc, SvUTF8 (sv), str, len);	598	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
480	}	599	}
481	else if (SvNOKp (sv))	600	else if (SvNOKp (sv))
482	encode_nv (enc, sv);	601	encode_nv (enc, sv);
483	else if (SvIOKp (sv))	602	else if (SvIOKp (sv))
484	{	603	{
485	if (SvIsUV (sv))	604	if (SvIsUV (sv))
486	encode_uint (enc, 0x00, SvUVX (sv));	605	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
487	else if (SvIVX (sv) >= 0)	606	else if (SvIVX (sv) >= 0)
488	encode_uint (enc, 0x00, SvIVX (sv));	607	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
489	else	608	else
490	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	609	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
491	}	610	}
492	else if (SvROK (sv))	611	else if (SvROK (sv))
493	encode_rv (enc, SvRV (sv));	612	encode_rv (enc, SvRV (sv));
494	else if (!SvOK (sv))	613	else if (!SvOK (sv))
495	encode_ch (enc, 0xe0 | 22);	614	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
496	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	615	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
497	encode_ch (enc, 0xe0 | 23);	616	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
498	else	617	else
499	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	618	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
500	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	619	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
501	}	620	}
502		621
503	static SV *	622	static SV *
504	encode_cbor (SV *scalar, CBOR *cbor)	623	encode_cbor (SV *scalar, CBOR *cbor)
505	{	624	{
506	enc_t enc = { };	625	enc_t enc = { 0 };
507		626
508	enc.cbor = *cbor;	627	enc.cbor = *cbor;
509	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	628	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
510	enc.cur = SvPVX (enc.sv);	629	enc.cur = SvPVX (enc.sv);
511	enc.end = SvEND (enc.sv);	630	enc.end = SvEND (enc.sv);
512		631
513	SvPOK_only (enc.sv);	632	SvPOK_only (enc.sv);
514		633
515	if (cbor->flags & F_ALLOW_STRINGREF)	634	if (cbor->flags & F_PACK_STRINGS)
516	{	635	{
517	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	636	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
518	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	637	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
519	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	638	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
520	}	639	}
…		…
542	CBOR cbor;	661	CBOR cbor;
543	U32 depth; // recursion depth	662	U32 depth; // recursion depth
544	U32 maxdepth; // recursion depth limit	663	U32 maxdepth; // recursion depth limit
545	AV *shareable;	664	AV *shareable;
546	AV *stringref;	665	AV *stringref;
		666	SV *decode_tagged;
		667	SV *err_sv; // optional sv for error, needs to be freed
547	} dec_t;	668	} dec_t;
548		669
549	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	670	// set dec->err to ERRSV
		671	ecb_cold static void
		672	err_errsv (dec_t *dec)
		673	{
		674	if (!dec->err)
		675	{
		676	dec->err_sv = newSVsv (ERRSV);
550		677
551	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	678	// chop off the trailing \n
		679	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		680	*SvEND (dec->err_sv) = 0;
552		681
		682	dec->err = SvPVutf8_nolen (dec->err_sv);
		683	}
		684	}
		685
		686	// the following functions are used to reduce code size and help the compiler to optimise
		687	ecb_cold static void
		688	err_set (dec_t *dec, const char *reason)
		689	{
		690	if (!dec->err)
		691	dec->err = reason;
		692	}
		693
		694	ecb_cold static void
		695	err_unexpected_end (dec_t *dec)
		696	{
		697	err_set (dec, "unexpected end of CBOR data");
		698	}
		699
		700	ecb_cold static void
		701	err_nesting_exceeded (dec_t *dec)
		702	{
		703	err_set (dec, ERR_NESTING_EXCEEDED);
		704	}
		705
		706	#define ERR_DO(do) SB do; goto fail; SE
		707	#define ERR(reason) ERR_DO (err_set (dec, reason))
		708	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		709
		710	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		711
553	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	712	#define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED)
554	#define DEC_DEC_DEPTH --dec->depth	713	#define DEC_DEC_DEPTH --dec->depth
555		714
556	static UV	715	static UV
557	decode_uint (dec_t *dec)	716	decode_uint (dec_t *dec)
558	{	717	{
559	switch (*dec->cur & 31)	718	U8 m = *dec->cur & MINOR_MASK;
560	{	719	++dec->cur;
561	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
562	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
563	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
564	return *dec->cur++ & 31;
565		720
566	case 24:	721	if (ecb_expect_true (m < LENGTH_EXT1))
		722	return m;
		723	else if (ecb_expect_true (m == LENGTH_EXT1))
		724	{
567	WANT (2);	725	WANT (1);
568	dec->cur += 2;	726	dec->cur += 1;
569	return dec->cur[-1];	727	return dec->cur[-1];
570		728	}
571	case 25:	729	else if (ecb_expect_true (m == LENGTH_EXT2))
		730	{
572	WANT (3);	731	WANT (2);
573	dec->cur += 3;	732	dec->cur += 2;
574	return (((UV)dec->cur[-2]) << 8)	733	return (((UV)dec->cur[-2]) << 8)
575	| ((UV)dec->cur[-1]);	734	| ((UV)dec->cur[-1]);
576		735	}
577	case 26:	736	else if (ecb_expect_true (m == LENGTH_EXT4))
		737	{
578	WANT (5);	738	WANT (4);
579	dec->cur += 5;	739	dec->cur += 4;
580	return (((UV)dec->cur[-4]) << 24)	740	return (((UV)dec->cur[-4]) << 24)
581	| (((UV)dec->cur[-3]) << 16)	741	| (((UV)dec->cur[-3]) << 16)
582	| (((UV)dec->cur[-2]) << 8)	742	| (((UV)dec->cur[-2]) << 8)
583	| ((UV)dec->cur[-1]);	743	| ((UV)dec->cur[-1]);
584		744	}
585	case 27:	745	else if (ecb_expect_true (m == LENGTH_EXT8))
		746	{
586	WANT (9);	747	WANT (8);
587	dec->cur += 9;	748	dec->cur += 8;
		749
		750	return
		751	#if UVSIZE < 8
		752	0
		753	#else
588	return (((UV)dec->cur[-8]) << 56)	754	(((UV)dec->cur[-8]) << 56)
589	| (((UV)dec->cur[-7]) << 48)	755	| (((UV)dec->cur[-7]) << 48)
590	| (((UV)dec->cur[-6]) << 40)	756	| (((UV)dec->cur[-6]) << 40)
591	| (((UV)dec->cur[-5]) << 32)	757	| (((UV)dec->cur[-5]) << 32)
		758	#endif
592	| (((UV)dec->cur[-4]) << 24)	759	| (((UV)dec->cur[-4]) << 24)
593	| (((UV)dec->cur[-3]) << 16)	760	| (((UV)dec->cur[-3]) << 16)
594	| (((UV)dec->cur[-2]) << 8)	761	| (((UV)dec->cur[-2]) << 8)
595	| ((UV)dec->cur[-1]);	762	| ((UV)dec->cur[-1]);
596		763	}
597	default:	764	else
598	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	765	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
599	}
600		766
601	fail:	767	fail:
602	return 0;	768	return 0;
603	}	769	}
604		770
…		…
609	{	775	{
610	AV *av = newAV ();	776	AV *av = newAV ();
611		777
612	DEC_INC_DEPTH;	778	DEC_INC_DEPTH;
613		779
614	if ((*dec->cur & 31) == 31)	780	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
615	{	781	{
616	++dec->cur;	782	++dec->cur;
617		783
618	for (;;)	784	for (;;)
619	{	785	{
620	WANT (1);	786	WANT (1);
621		787
622	if (*dec->cur == (0xe0 | 31))	788	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
623	{	789	{
624	++dec->cur;	790	++dec->cur;
625	break;	791	break;
626	}	792	}
627		793
628	av_push (av, decode_sv (dec));	794	av_push (av, decode_sv (dec));
629	}	795	}
630	}	796	}
631	else	797	else
632	{	798	{
633	int i, len = decode_uint (dec);	799	UV i, len = decode_uint (dec);
634		800
		801	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
635	av_fill (av, len - 1);	802	av_fill (av, len - 1);
636		803
637	for (i = 0; i < len; ++i)	804	for (i = 0; i < len; ++i)
638	AvARRAY (av)[i] = decode_sv (dec);	805	AvARRAY (av)[i] = decode_sv (dec);
639	}	806	}
…		…
652	{	819	{
653	// for speed reasons, we specialcase single-string	820	// for speed reasons, we specialcase single-string
654	// byte or utf-8 strings as keys, but only when !stringref	821	// byte or utf-8 strings as keys, but only when !stringref
655		822
656	if (ecb_expect_true (!dec->stringref))	823	if (ecb_expect_true (!dec->stringref))
657	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	824	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
658	{	825	{
659	I32 len = decode_uint (dec);	826	STRLEN len = decode_uint (dec);
660	char *key = (char *)dec->cur;	827	char *key = (char *)dec->cur;
661		828
		829	WANT (len);
662	dec->cur += len;	830	dec->cur += len;
663		831
664	if (ecb_expect_false (dec->stringref))
665	av_push (dec->stringref, newSVpvn (key, len));
666
667	hv_store (hv, key, len, decode_sv (dec), 0);	832	hv_store (hv, key, len, decode_sv (dec), 0);
668		833
669	return;	834	return;
670	}	835	}
671	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	836	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
672	{	837	{
673	I32 len = decode_uint (dec);	838	STRLEN len = decode_uint (dec);
674	char *key = (char *)dec->cur;	839	char *key = (char *)dec->cur;
675		840
		841	WANT (len);
676	dec->cur += len;	842	dec->cur += len;
677		843
678	if (ecb_expect_false (dec->stringref))	844	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
679	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	845	if (!is_utf8_string (key, len))
		846	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
680		847
681	hv_store (hv, key, -len, decode_sv (dec), 0);	848	hv_store (hv, key, -len, decode_sv (dec), 0);
682		849
683	return;	850	return;
684	}	851	}
685		852
686	SV *k = decode_sv (dec);	853	SV *k = decode_sv (dec);
687	SV *v = decode_sv (dec);	854	SV *v = decode_sv (dec);
688		855
		856	// we leak memory if uncaught exceptions are thrown by random magical
		857	// methods, and this is hopefully the only place where it can happen,
		858	// so if there is a chance of an exception, take the very slow path.
		859	// since catching exceptions is "undocumented/internal/forbidden" by
		860	// the new p5p powers, we need to call out to a perl function :/
		861	if (ecb_expect_false (SvAMAGIC (k)))
		862	{
		863	dSP;
		864
		865	ENTER; SAVETMPS;
		866	PUSHMARK (SP);
		867	EXTEND (SP, 3);
		868	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		869	PUSHs (sv_2mortal (k));
		870	PUSHs (sv_2mortal (v));
		871
		872	PUTBACK;
		873	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		874	SPAGAIN;
		875
		876	FREETMPS; LEAVE;
		877
		878	if (SvTRUE (ERRSV))
		879	ERR_ERRSV;
		880
		881	return;
		882	}
		883
689	hv_store_ent (hv, k, v, 0);	884	hv_store_ent (hv, k, v, 0);
690	SvREFCNT_dec (k);	885	SvREFCNT_dec (k);
		886
		887	fail:
		888	;
691	}	889	}
692		890
693	static SV *	891	static SV *
694	decode_hv (dec_t *dec)	892	decode_hv (dec_t *dec)
695	{	893	{
696	HV *hv = newHV ();	894	HV *hv = newHV ();
697		895
698	DEC_INC_DEPTH;	896	DEC_INC_DEPTH;
699		897
700	if ((*dec->cur & 31) == 31)	898	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
701	{	899	{
702	++dec->cur;	900	++dec->cur;
703		901
704	for (;;)	902	for (;;)
705	{	903	{
706	WANT (1);	904	WANT (1);
707		905
708	if (*dec->cur == (0xe0 | 31))	906	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
709	{	907	{
710	++dec->cur;	908	++dec->cur;
711	break;	909	break;
712	}	910	}
713		911
714	decode_he (dec, hv);	912	decode_he (dec, hv);
715	}	913	}
716	}	914	}
717	else	915	else
718	{	916	{
719	int pairs = decode_uint (dec);	917	UV pairs = decode_uint (dec);
		918
		919	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
720		920
721	while (pairs--)	921	while (pairs--)
722	decode_he (dec, hv);	922	decode_he (dec, hv);
723	}	923	}
724		924
…		…
734	static SV *	934	static SV *
735	decode_str (dec_t *dec, int utf8)	935	decode_str (dec_t *dec, int utf8)
736	{	936	{
737	SV *sv = 0;	937	SV *sv = 0;
738		938
739	if ((*dec->cur & 31) == 31)	939	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
740	{	940	{
		941	// indefinite length strings
741	++dec->cur;	942	++dec->cur;
742		943
		944	U8 major = *dec->cur & MAJOR_MISC;
		945
743	sv = newSVpvn ("", 0);	946	sv = newSVpvn ("", 0);
744		947
745	// not very fast, and certainly not robust against illegal input
746	for (;;)	948	for (;;)
747	{	949	{
748	WANT (1);	950	WANT (1);
749		951
750	if (*dec->cur == (0xe0 | 31))	952	if ((*dec->cur - major) > LENGTH_EXT8)
		953	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
751	{	954	{
752	++dec->cur;	955	++dec->cur;
753	break;	956	break;
754	}	957	}
		958	else
		959	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
755		960
756	sv_catsv (sv, decode_sv (dec));	961	STRLEN len = decode_uint (dec);
		962
		963	WANT (len);
		964	sv_catpvn (sv, dec->cur, len);
		965	dec->cur += len;
757	}	966	}
758	}	967	}
759	else	968	else
760	{	969	{
761	STRLEN len = decode_uint (dec);	970	STRLEN len = decode_uint (dec);
…		…
768	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))	977	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
769	av_push (dec->stringref, SvREFCNT_inc_NN (sv));	978	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
770	}	979	}
771		980
772	if (utf8)	981	if (utf8)
		982	{
		983	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		984	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		985	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		986
773	SvUTF8_on (sv);	987	SvUTF8_on (sv);
		988	}
774		989
775	return sv;	990	return sv;
776		991
777	fail:	992	fail:
778	SvREFCNT_dec (sv);	993	SvREFCNT_dec (sv);
…		…
797	sv = newRV_noinc (decode_sv (dec));	1012	sv = newRV_noinc (decode_sv (dec));
798	break;	1013	break;
799		1014
800	case CBOR_TAG_STRINGREF_NAMESPACE:	1015	case CBOR_TAG_STRINGREF_NAMESPACE:
801	{	1016	{
		1017	// do nmot use SAVETMPS/FREETMPS, as these will
		1018	// erase mortalised caches, e.g. "shareable"
802	ENTER; SAVETMPS;	1019	ENTER;
803		1020
804	SAVESPTR (dec->stringref);	1021	SAVESPTR (dec->stringref);
805	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1022	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
806		1023
807	sv = decode_sv (dec);	1024	sv = decode_sv (dec);
808		1025
809	FREETMPS; LEAVE;	1026	LEAVE;
810	}	1027	}
811	break;	1028	break;
812		1029
813	case CBOR_TAG_STRINGREF:	1030	case CBOR_TAG_STRINGREF:
814	{	1031	{
815	if ((*dec->cur >> 5) != 0)	1032	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
816	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1033	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
817		1034
818	UV idx = decode_uint (dec);	1035	UV idx = decode_uint (dec);
819		1036
820	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1037	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
…		…
827	case CBOR_TAG_VALUE_SHAREABLE:	1044	case CBOR_TAG_VALUE_SHAREABLE:
828	{	1045	{
829	if (ecb_expect_false (!dec->shareable))	1046	if (ecb_expect_false (!dec->shareable))
830	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1047	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
831		1048
		1049	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1050	{
832	sv = newSV (0);	1051	sv = newSV (0);
833	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1052	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
834		1053
835	SV *osv = decode_sv (dec);	1054	SV *osv = decode_sv (dec);
836	sv_setsv (sv, osv);	1055	sv_setsv (sv, osv);
837	SvREFCNT_dec_NN (osv);	1056	SvREFCNT_dec_NN (osv);
		1057	}
		1058	else
		1059	{
		1060	av_push (dec->shareable, &PL_sv_undef);
		1061	int idx = AvFILLp (dec->shareable);
		1062	sv = decode_sv (dec);
		1063	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1064	}
838	}	1065	}
839	break;	1066	break;
840		1067
841	case CBOR_TAG_VALUE_SHAREDREF:	1068	case CBOR_TAG_VALUE_SHAREDREF:
842	{	1069	{
843	if ((*dec->cur >> 5) != 0)	1070	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
844	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1071	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
845		1072
846	UV idx = decode_uint (dec);	1073	UV idx = decode_uint (dec);
847		1074
848	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1075	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
849	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1076	ERR ("corrupted CBOR data (sharedref index out of bounds)");
850		1077
851	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1078	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1079
		1080	if (sv == &PL_sv_undef)
		1081	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
852	}	1082	}
853	break;	1083	break;
854		1084
855	case CBOR_TAG_PERL_OBJECT:	1085	case CBOR_TAG_PERL_OBJECT:
856	{	1086	{
		1087	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1088	goto filter;
		1089
857	sv = decode_sv (dec);	1090	sv = decode_sv (dec);
858		1091
859	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1092	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
860	ERR ("corrupted CBOR data (non-array perl object)");	1093	ERR ("corrupted CBOR data (non-array perl object)");
861		1094
…		…
871	if (!method)	1104	if (!method)
872	ERR ("cannot decode perl-object (package does not have a THAW method)");	1105	ERR ("cannot decode perl-object (package does not have a THAW method)");
873		1106
874	dSP;	1107	dSP;
875		1108
876	ENTER; SAVETMPS; PUSHMARK (SP);	1109	ENTER; SAVETMPS;
		1110	PUSHMARK (SP);
877	EXTEND (SP, len + 1);	1111	EXTEND (SP, len + 1);
878	// we re-bless the reference to get overload and other niceties right	1112	// we re-bless the reference to get overload and other niceties right
879	PUSHs (*av_fetch (av, 0, 1));	1113	PUSHs (*av_fetch (av, 0, 1));
880	PUSHs (sv_cbor);	1114	PUSHs (sv_cbor);
881		1115
…		…
889	SPAGAIN;	1123	SPAGAIN;
890		1124
891	if (SvTRUE (ERRSV))	1125	if (SvTRUE (ERRSV))
892	{	1126	{
893	FREETMPS; LEAVE;	1127	FREETMPS; LEAVE;
894	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1128	ERR_ERRSV;
895	}	1129	}
896		1130
897	SvREFCNT_dec (sv);	1131	SvREFCNT_dec (sv);
898	sv = SvREFCNT_inc (POPs);	1132	sv = SvREFCNT_inc (POPs);
899		1133
…		…
902	FREETMPS; LEAVE;	1136	FREETMPS; LEAVE;
903	}	1137	}
904	break;	1138	break;
905		1139
906	default:	1140	default:
		1141	filter:
907	{	1142	{
		1143	SV *tag_sv = newSVuv (tag);
		1144
908	sv = decode_sv (dec);	1145	sv = decode_sv (dec);
909		1146
		1147	dSP;
		1148	ENTER; SAVETMPS;
		1149	SAVESTACK_POS ();
		1150	PUSHMARK (SP);
		1151	EXTEND (SP, 2);
		1152	PUSHs (tag_sv);
		1153	PUSHs (sv);
		1154
		1155	PUTBACK;
		1156	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1157	SPAGAIN;
		1158
		1159	if (SvTRUE (ERRSV))
		1160	{
		1161	SvREFCNT_dec (tag_sv);
		1162	FREETMPS; LEAVE;
		1163	ERR_ERRSV;
		1164	}
		1165
		1166	if (count)
		1167	{
		1168	SvREFCNT_dec (tag_sv);
		1169	SvREFCNT_dec (sv);
		1170	sv = SvREFCNT_inc (POPs);
		1171	}
		1172	else
		1173	{
910	AV *av = newAV ();	1174	AV *av = newAV ();
911	av_push (av, newSVuv (tag));	1175	av_push (av, tag_sv);
912	av_push (av, sv);	1176	av_push (av, sv);
913		1177
914	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1178	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
915	? cbor_tagged_stash	1179	? cbor_tagged_stash
916	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1180	: gv_stashpv ("CBOR::XS::Tagged" , 1);
917
918	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1181	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1182	}
		1183
		1184	PUTBACK;
		1185
		1186	FREETMPS; LEAVE;
919	}	1187	}
920	break;	1188	break;
921	}	1189	}
922		1190
923	return sv;	1191	return sv;
…		…
930	static SV *	1198	static SV *
931	decode_sv (dec_t *dec)	1199	decode_sv (dec_t *dec)
932	{	1200	{
933	WANT (1);	1201	WANT (1);
934		1202
935	switch (*dec->cur >> 5)	1203	switch (*dec->cur >> MAJOR_SHIFT)
936	{	1204	{
937	case 0: // unsigned int	1205	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
938	return newSVuv (decode_uint (dec));	1206	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
939	case 1: // negative int	1207	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
940	return newSViv (-1 - (IV)decode_uint (dec));	1208	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
941	case 2: // octet string	1209	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
942	return decode_str (dec, 0);	1210	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
943	case 3: // utf-8 string	1211	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
944	return decode_str (dec, 1);	1212
945	case 4: // array	1213	case MAJOR_MISC >> MAJOR_SHIFT:
946	return decode_av (dec);
947	case 5: // map
948	return decode_hv (dec);
949	case 6: // tag
950	return decode_tagged (dec);
951	case 7: // misc
952	switch (*dec->cur++ & 31)	1214	switch (*dec->cur++ & MINOR_MASK)
953	{	1215	{
954	case 20:	1216	case SIMPLE_FALSE:
955	#if CBOR_SLOW	1217	#if CBOR_SLOW
956	types_false = get_bool ("Types::Serialiser::false");	1218	types_false = get_bool ("Types::Serialiser::false");
957	#endif	1219	#endif
958	return newSVsv (types_false);	1220	return newSVsv (types_false);
959	case 21:	1221	case SIMPLE_TRUE:
960	#if CBOR_SLOW	1222	#if CBOR_SLOW
961	types_true = get_bool ("Types::Serialiser::true");	1223	types_true = get_bool ("Types::Serialiser::true");
962	#endif	1224	#endif
963	return newSVsv (types_true);	1225	return newSVsv (types_true);
964	case 22:	1226	case SIMPLE_NULL:
965	return newSVsv (&PL_sv_undef);	1227	return newSVsv (&PL_sv_undef);
966	case 23:	1228	case SIMPLE_UNDEF:
967	#if CBOR_SLOW	1229	#if CBOR_SLOW
968	types_error = get_bool ("Types::Serialiser::error");	1230	types_error = get_bool ("Types::Serialiser::error");
969	#endif	1231	#endif
970	return newSVsv (types_error);	1232	return newSVsv (types_error);
971		1233
972	case 25:	1234	case MISC_FLOAT16:
973	{	1235	{
974	WANT (2);	1236	WANT (2);
975		1237
976	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1238	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
977	dec->cur += 2;	1239	dec->cur += 2;
978		1240
979	return newSVnv (ecb_binary16_to_float (fp));	1241	return newSVnv (ecb_binary16_to_float (fp));
980	}	1242	}
981		1243
982	case 26:	1244	case MISC_FLOAT32:
983	{	1245	{
984	uint32_t fp;	1246	uint32_t fp;
985	WANT (4);	1247	WANT (4);
986	memcpy (&fp, dec->cur, 4);	1248	memcpy (&fp, dec->cur, 4);
987	dec->cur += 4;	1249	dec->cur += 4;
…		…
990	fp = ecb_bswap32 (fp);	1252	fp = ecb_bswap32 (fp);
991		1253
992	return newSVnv (ecb_binary32_to_float (fp));	1254	return newSVnv (ecb_binary32_to_float (fp));
993	}	1255	}
994		1256
995	case 27:	1257	case MISC_FLOAT64:
996	{	1258	{
997	uint64_t fp;	1259	uint64_t fp;
998	WANT (8);	1260	WANT (8);
999	memcpy (&fp, dec->cur, 8);	1261	memcpy (&fp, dec->cur, 8);
1000	dec->cur += 8;	1262	dec->cur += 8;
…		…
1003	fp = ecb_bswap64 (fp);	1265	fp = ecb_bswap64 (fp);
1004		1266
1005	return newSVnv (ecb_binary64_to_double (fp));	1267	return newSVnv (ecb_binary64_to_double (fp));
1006	}	1268	}
1007		1269
1008	// 0..19 unassigned	1270	// 0..19 unassigned simple
1009	// 24 reserved + unassigned (reserved values are not encodable)	1271	// 24 reserved + unassigned simple (reserved values are not encodable)
		1272	// 28-30 unassigned misc
		1273	// 31 break code
1010	default:	1274	default:
1011	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1275	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1012	}	1276	}
1013		1277
1014	break;	1278	break;
1015	}	1279	}
1016		1280
…		…
1019	}	1283	}
1020		1284
1021	static SV *	1285	static SV *
1022	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1286	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1023	{	1287	{
1024	dec_t dec = { };	1288	dec_t dec = { 0 };
1025	SV *sv;	1289	SV *sv;
1026	STRLEN len;	1290	STRLEN len;
1027	char *data = SvPVbyte (string, len);	1291	char *data = SvPVbyte (string, len);
1028		1292
1029	if (len > cbor->max_size && cbor->max_size)	1293	if (len > cbor->max_size && cbor->max_size)
…		…
1043	if (dec.cur != dec.end && !dec.err)	1307	if (dec.cur != dec.end && !dec.err)
1044	dec.err = "garbage after CBOR object";	1308	dec.err = "garbage after CBOR object";
1045		1309
1046	if (dec.err)	1310	if (dec.err)
1047	{	1311	{
		1312	if (dec.shareable)
		1313	{
		1314	// need to break cyclic links, which would all be in shareable
		1315	int i;
		1316	SV **svp;
		1317
		1318	for (i = av_len (dec.shareable) + 1; i--; )
		1319	if ((svp = av_fetch (dec.shareable, i, 0)))
		1320	sv_setsv (*svp, &PL_sv_undef);
		1321	}
		1322
1048	SvREFCNT_dec (sv);	1323	SvREFCNT_dec (sv);
		1324
		1325	if (dec.err_sv)
		1326	sv_2mortal (dec.err_sv);
		1327
1049	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1328	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1050	}	1329	}
1051		1330
1052	sv = sv_2mortal (sv);	1331	sv = sv_2mortal (sv);
1053		1332
1054	return sv;	1333	return sv;
1055	}	1334	}
1056		1335
		1336	/////////////////////////////////////////////////////////////////////////////
		1337	// incremental parser
		1338
		1339	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1340
		1341	// returns 0 for notyet, 1 for success or error
		1342	static int
		1343	incr_parse (CBOR *self, SV *cborstr)
		1344	{
		1345	STRLEN cur;
		1346	SvPV (cborstr, cur);
		1347
		1348	while (ecb_expect_true (self->incr_need <= cur))
		1349	{
		1350	// table of integer count bytes
		1351	static I8 incr_len[MINOR_MASK + 1] = {
		1352	0, 0, 0, 0, 0, 0, 0, 0,
		1353	0, 0, 0, 0, 0, 0, 0, 0,
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	1, 2, 4, 8,-1,-1,-1,-2
		1356	};
		1357
		1358	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1359	U8 m = *p & MINOR_MASK;
		1360	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1361	I8 ilen = incr_len[m];
		1362
		1363	self->incr_need = self->incr_pos + 1;
		1364
		1365	if (ecb_expect_false (ilen < 0))
		1366	{
		1367	if (m != MINOR_INDEF)
		1368	return 1; // error
		1369
		1370	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1371	{
		1372	if (count >= 0)
		1373	return 1; // error
		1374
		1375	count = 1;
		1376	}
		1377	else
		1378	{
		1379	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1380	count = -1;
		1381	}
		1382	}
		1383	else
		1384	{
		1385	self->incr_need += ilen;
		1386	if (ecb_expect_false (self->incr_need > cur))
		1387	return 0;
		1388
		1389	int major = *p >> MAJOR_SHIFT;
		1390
		1391	switch (major)
		1392	{
		1393	case MAJOR_TAG >> MAJOR_SHIFT:
		1394	++count; // tags merely prefix another value
		1395	break;
		1396
		1397	case MAJOR_BYTES >> MAJOR_SHIFT:
		1398	case MAJOR_TEXT >> MAJOR_SHIFT:
		1399	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1400	case MAJOR_MAP >> MAJOR_SHIFT:
		1401	{
		1402	UV len;
		1403
		1404	if (ecb_expect_false (ilen))
		1405	{
		1406	len = 0;
		1407
		1408	do {
		1409	len = (len << 8) | *++p;
		1410	} while (--ilen);
		1411	}
		1412	else
		1413	len = m;
		1414
		1415	switch (major)
		1416	{
		1417	case MAJOR_BYTES >> MAJOR_SHIFT:
		1418	case MAJOR_TEXT >> MAJOR_SHIFT:
		1419	self->incr_need += len;
		1420	if (ecb_expect_false (self->incr_need > cur))
		1421	return 0;
		1422
		1423	break;
		1424
		1425	case MAJOR_MAP >> MAJOR_SHIFT:
		1426	len <<= 1;
		1427	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1428	if (len)
		1429	{
		1430	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1431	count = len + 1;
		1432	}
		1433	break;
		1434	}
		1435	}
		1436	}
		1437	}
		1438
		1439	self->incr_pos = self->incr_need;
		1440
		1441	if (count > 0)
		1442	{
		1443	while (!--count)
		1444	{
		1445	if (!AvFILLp (self->incr_count))
		1446	return 1; // done
		1447
		1448	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1449	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1450	}
		1451
		1452	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1453	}
		1454	}
		1455
		1456	return 0;
		1457	}
		1458
		1459
1057	/////////////////////////////////////////////////////////////////////////////	1460	/////////////////////////////////////////////////////////////////////////////
1058	// XS interface functions	1461	// XS interface functions
1059		1462
1060	MODULE = CBOR::XS PACKAGE = CBOR::XS	1463	MODULE = CBOR::XS PACKAGE = CBOR::XS
1061		1464
…		…
1069		1472
1070	types_true = get_bool ("Types::Serialiser::true" );	1473	types_true = get_bool ("Types::Serialiser::true" );
1071	types_false = get_bool ("Types::Serialiser::false");	1474	types_false = get_bool ("Types::Serialiser::false");
1072	types_error = get_bool ("Types::Serialiser::error");	1475	types_error = get_bool ("Types::Serialiser::error");
1073		1476
		1477	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1478
1074	sv_cbor = newSVpv ("CBOR", 0);	1479	sv_cbor = newSVpv ("CBOR", 0);
1075	SvREADONLY_on (sv_cbor);	1480	SvREADONLY_on (sv_cbor);
		1481
		1482	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1076	}	1483	}
1077		1484
1078	PROTOTYPES: DISABLE	1485	PROTOTYPES: DISABLE
1079		1486
1080	void CLONE (...)	1487	void CLONE (...)
…		…
1099	void shrink (CBOR *self, int enable = 1)	1506	void shrink (CBOR *self, int enable = 1)
1100	ALIAS:	1507	ALIAS:
1101	shrink = F_SHRINK	1508	shrink = F_SHRINK
1102	allow_unknown = F_ALLOW_UNKNOWN	1509	allow_unknown = F_ALLOW_UNKNOWN
1103	allow_sharing = F_ALLOW_SHARING	1510	allow_sharing = F_ALLOW_SHARING
1104	allow_stringref = F_ALLOW_STRINGREF	1511	allow_cycles = F_ALLOW_CYCLES
		1512	forbid_objects = F_FORBID_OBJECTS
		1513	pack_strings = F_PACK_STRINGS
		1514	text_keys = F_TEXT_KEYS
		1515	text_strings = F_TEXT_STRINGS
		1516	validate_utf8 = F_VALIDATE_UTF8
1105	PPCODE:	1517	PPCODE:
1106	{	1518	{
1107	if (enable)	1519	if (enable)
1108	self->flags |= ix;	1520	self->flags |= ix;
1109	else	1521	else
…		…
1115	void get_shrink (CBOR *self)	1527	void get_shrink (CBOR *self)
1116	ALIAS:	1528	ALIAS:
1117	get_shrink = F_SHRINK	1529	get_shrink = F_SHRINK
1118	get_allow_unknown = F_ALLOW_UNKNOWN	1530	get_allow_unknown = F_ALLOW_UNKNOWN
1119	get_allow_sharing = F_ALLOW_SHARING	1531	get_allow_sharing = F_ALLOW_SHARING
1120	get_allow_stringref = F_ALLOW_STRINGREF	1532	get_allow_cycles = F_ALLOW_CYCLES
		1533	get_forbid_objects = F_FORBID_OBJECTS
		1534	get_pack_strings = F_PACK_STRINGS
		1535	get_text_keys = F_TEXT_KEYS
		1536	get_text_strings = F_TEXT_STRINGS
		1537	get_validate_utf8 = F_VALIDATE_UTF8
1121	PPCODE:	1538	PPCODE:
1122	XPUSHs (boolSV (self->flags & ix));	1539	XPUSHs (boolSV (self->flags & ix));
1123		1540
1124	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1541	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1125	PPCODE:	1542	PPCODE:
…		…
1138	XPUSHs (ST (0));	1555	XPUSHs (ST (0));
1139		1556
1140	int get_max_size (CBOR *self)	1557	int get_max_size (CBOR *self)
1141	CODE:	1558	CODE:
1142	RETVAL = self->max_size;	1559	RETVAL = self->max_size;
		1560	OUTPUT:
		1561	RETVAL
		1562
		1563	void filter (CBOR *self, SV *filter = 0)
		1564	PPCODE:
		1565	SvREFCNT_dec (self->filter);
		1566	self->filter = filter ? newSVsv (filter) : filter;
		1567	XPUSHs (ST (0));
		1568
		1569	SV *get_filter (CBOR *self)
		1570	CODE:
		1571	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1143	OUTPUT:	1572	OUTPUT:
1144	RETVAL	1573	RETVAL
1145		1574
1146	void encode (CBOR *self, SV *scalar)	1575	void encode (CBOR *self, SV *scalar)
1147	PPCODE:	1576	PPCODE:
…		…
1162	EXTEND (SP, 2);	1591	EXTEND (SP, 2);
1163	PUSHs (sv);	1592	PUSHs (sv);
1164	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1593	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1165	}	1594	}
1166		1595
		1596	void incr_parse (CBOR *self, SV *cborstr)
		1597	ALIAS:
		1598	incr_parse_multiple = 1
		1599	PPCODE:
		1600	{
		1601	if (SvUTF8 (cborstr))
		1602	sv_utf8_downgrade (cborstr, 0);
		1603
		1604	if (!self->incr_count)
		1605	{
		1606	self->incr_count = newAV ();
		1607	self->incr_pos = 0;
		1608	self->incr_need = 1;
		1609
		1610	av_push (self->incr_count, newSViv (1));
		1611	}
		1612
		1613	do
		1614	{
		1615	if (!incr_parse (self, cborstr))
		1616	{
		1617	if (self->incr_need > self->max_size && self->max_size)
		1618	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1619	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1620
		1621	break;
		1622	}
		1623
		1624	SV *sv;
		1625	char *offset;
		1626
		1627	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1628	XPUSHs (sv);
		1629
		1630	sv_chop (cborstr, offset);
		1631
		1632	av_clear (self->incr_count);
		1633	av_push (self->incr_count, newSViv (1));
		1634
		1635	self->incr_pos = 0;
		1636	self->incr_need = self->incr_pos + 1;
		1637	}
		1638	while (ix);
		1639	}
		1640
		1641	void incr_reset (CBOR *self)
		1642	CODE:
		1643	{
		1644	SvREFCNT_dec (self->incr_count);
		1645	self->incr_count = 0;
		1646	}
		1647
		1648	void DESTROY (CBOR *self)
		1649	PPCODE:
		1650	cbor_free (self);
		1651
1167	PROTOTYPES: ENABLE	1652	PROTOTYPES: ENABLE
1168		1653
1169	void encode_cbor (SV *scalar)	1654	void encode_cbor (SV *scalar)
		1655	ALIAS:
		1656	encode_cbor = 0
		1657	encode_cbor_sharing = F_ALLOW_SHARING
1170	PPCODE:	1658	PPCODE:
1171	{	1659	{
1172	CBOR cbor;	1660	CBOR cbor;
1173	cbor_init (&cbor);	1661	cbor_init (&cbor);
		1662	cbor.flags |= ix;
1174	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1663	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1175	XPUSHs (scalar);	1664	XPUSHs (scalar);
1176	}	1665	}
1177		1666
1178	void decode_cbor (SV *cborstr)	1667	void decode_cbor (SV *cborstr)

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