ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/CBOR-XS/XS.xs

Comparing CBOR-XS/XS.xs (file contents):
Revision 1.26 by root, Fri Nov 22 09:40:13 2013 UTC vs.
Revision 1.61 by root, Sat Nov 26 02:10:19 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
133	? idx > 0xffU	193	return idx <= 23 ? 3
134	? idx > 0xffffU	194	: idx <= 0xffU ? 4
		195	: idx <= 0xffffU ? 5
135	? idx > 0xffffffffU	196	: idx <= 0xffffffffU ? 7
136	? 7	197	: 11;
137	: 6
138	: 5
139	: 4
140	: 3;
141	}	198	}
142		199
143	/////////////////////////////////////////////////////////////////////////////	200	/////////////////////////////////////////////////////////////////////////////
144	// encoder	201	// encoder
145		202
…		…
158	} enc_t;	215	} enc_t;
159		216
160	ecb_inline void	217	ecb_inline void
161	need (enc_t *enc, STRLEN len)	218	need (enc_t *enc, STRLEN len)
162	{	219	{
163	if (ecb_expect_false (enc->cur + len >= enc->end))	220	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
164	{	221	{
165	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	222	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
166	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	223	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
167	enc->cur = SvPVX (enc->sv) + cur;	224	enc->cur = SvPVX (enc->sv) + cur;
168	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	225	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
179	static void	236	static void
180	encode_uint (enc_t *enc, int major, UV len)	237	encode_uint (enc_t *enc, int major, UV len)
181	{	238	{
182	need (enc, 9);	239	need (enc, 9);
183		240
184	if (len < 24)	241	if (ecb_expect_true (len < LENGTH_EXT1))
185	*enc->cur++ = major | len;	242	*enc->cur++ = major | len;
186	else if (len <= 0xff)	243	else if (ecb_expect_true (len <= 0xffU))
187	{	244	{
188	*enc->cur++ = major | 24;	245	*enc->cur++ = major | LENGTH_EXT1;
189	*enc->cur++ = len;	246	*enc->cur++ = len;
190	}	247	}
191	else if (len <= 0xffff)	248	else if (len <= 0xffffU)
192	{	249	{
193	*enc->cur++ = major | 25;	250	*enc->cur++ = major | LENGTH_EXT2;
194	*enc->cur++ = len >> 8;	251	*enc->cur++ = len >> 8;
195	*enc->cur++ = len;	252	*enc->cur++ = len;
196	}	253	}
197	else if (len <= 0xffffffff)	254	else if (len <= 0xffffffffU)
198	{	255	{
199	*enc->cur++ = major | 26;	256	*enc->cur++ = major | LENGTH_EXT4;
200	*enc->cur++ = len >> 24;	257	*enc->cur++ = len >> 24;
201	*enc->cur++ = len >> 16;	258	*enc->cur++ = len >> 16;
202	*enc->cur++ = len >> 8;	259	*enc->cur++ = len >> 8;
203	*enc->cur++ = len;	260	*enc->cur++ = len;
204	}	261	}
205	else	262	else
206	{	263	{
207	*enc->cur++ = major | 27;	264	*enc->cur++ = major | LENGTH_EXT8;
208	*enc->cur++ = len >> 56;	265	*enc->cur++ = len >> 56;
209	*enc->cur++ = len >> 48;	266	*enc->cur++ = len >> 48;
210	*enc->cur++ = len >> 40;	267	*enc->cur++ = len >> 40;
211	*enc->cur++ = len >> 32;	268	*enc->cur++ = len >> 32;
212	*enc->cur++ = len >> 24;	269	*enc->cur++ = len >> 24;
…		…
217	}	274	}
218		275
219	ecb_inline void	276	ecb_inline void
220	encode_tag (enc_t *enc, UV tag)	277	encode_tag (enc_t *enc, UV tag)
221	{	278	{
222	encode_uint (enc, 0xc0, tag);	279	encode_uint (enc, MAJOR_TAG, tag);
223	}	280	}
224		281
225	static void	282	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		283	ecb_noinline static void
226	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	284	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
227	{	285	{
		286	STRLEN ulen = len;
		287	U8 *p, *pend = (U8 *)str + len;
		288
		289	for (p = (U8 *)str; p < pend; ++p)
		290	ulen += *p >> 7; // count set high bits
		291
		292	encode_uint (enc, MAJOR_TEXT, ulen);
		293
		294	need (enc, ulen);
		295	for (p = (U8 *)str; p < pend; ++p)
		296	if (*p < 0x80)
		297	*enc->cur++ = *p;
		298	else
		299	{
		300	*enc->cur++ = 0xc0 + (*p >> 6);
		301	*enc->cur++ = 0x80 + (*p & 63);
		302	}
		303	}
		304
		305	ecb_inline void
		306	encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		307	{
		308	if (ecb_expect_false (upgrade_utf8))
		309	if (!utf8)
		310	{
		311	encode_str_utf8 (enc, utf8, str, len);
		312	return;
		313	}
		314
		315	encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len);
		316	need (enc, len);
		317	memcpy (enc->cur, str, len);
		318	enc->cur += len;
		319	}
		320
		321	ecb_inline void
		322	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		323	{
228	if (ecb_expect_false (enc->cbor.flags & F_ALLOW_STRINGREF))	324	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
229	{	325	{
230	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);	326	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
231		327
232	if (SvOK (*svp))	328	if (SvOK (*svp))
233	{	329	{
234	// already registered, use stringref	330	// already registered, use stringref
235	encode_tag (enc, CBOR_TAG_STRINGREF);	331	encode_tag (enc, CBOR_TAG_STRINGREF);
236	encode_uint (enc, 0x00, SvUV (*svp));	332	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
237	return;	333	return;
238	}	334	}
239	else if (len >= minimum_string_length (enc->stringref_idx))	335	else if (len >= minimum_string_length (enc->stringref_idx))
240	{	336	{
241	// register only	337	// register only
242	sv_setuv (*svp, enc->stringref_idx);	338	sv_setuv (*svp, enc->stringref_idx);
243	++enc->stringref_idx;	339	++enc->stringref_idx;
244	}	340	}
245	}	341	}
246		342
247	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	343	encode_str (enc, upgrade_utf8, utf8, str, len);
248	need (enc, len);
249	memcpy (enc->cur, str, len);
250	enc->cur += len;
251	}	344	}
252		345
253	static void encode_sv (enc_t *enc, SV *sv);	346	static void encode_sv (enc_t *enc, SV *sv);
254		347
255	static void	348	static void
…		…
260	if (enc->depth >= enc->cbor.max_depth)	353	if (enc->depth >= enc->cbor.max_depth)
261	croak (ERR_NESTING_EXCEEDED);	354	croak (ERR_NESTING_EXCEEDED);
262		355
263	++enc->depth;	356	++enc->depth;
264		357
265	encode_uint (enc, 0x80, len + 1);	358	encode_uint (enc, MAJOR_ARRAY, len + 1);
266		359
		360	if (SvMAGICAL (av))
267	for (i = 0; i <= len; ++i)	361	for (i = 0; i <= len; ++i)
268	{	362	{
269	SV **svp = av_fetch (av, i, 0);	363	SV **svp = av_fetch (av, i, 0);
270	encode_sv (enc, svp ? *svp : &PL_sv_undef);	364	encode_sv (enc, svp ? *svp : &PL_sv_undef);
271	}	365	}
		366	else
		367	for (i = 0; i <= len; ++i)
		368	{
		369	SV *sv = AvARRAY (av)[i];
		370	encode_sv (enc, sv ? sv : &PL_sv_undef);
		371	}
272		372
273	--enc->depth;	373	--enc->depth;
274	}	374	}
275		375
276	static void	376	static void
…		…
285		385
286	int pairs = hv_iterinit (hv);	386	int pairs = hv_iterinit (hv);
287	int mg = SvMAGICAL (hv);	387	int mg = SvMAGICAL (hv);
288		388
289	if (mg)	389	if (mg)
290	encode_ch (enc, 0xa0 | 31);	390	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
291	else	391	else
292	encode_uint (enc, 0xa0, pairs);	392	encode_uint (enc, MAJOR_MAP, pairs);
293		393
294	while ((he = hv_iternext (hv)))	394	while ((he = hv_iternext (hv)))
295	{	395	{
296	if (HeKLEN (he) == HEf_SVKEY)	396	if (HeKLEN (he) == HEf_SVKEY)
297	encode_sv (enc, HeSVKEY (he));	397	encode_sv (enc, HeSVKEY (he));
298	else	398	else
299	encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he));	399	encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he));
300		400
301	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));	401	encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he));
302	}	402	}
303		403
304	if (mg)	404	if (mg)
305	encode_ch (enc, 0xe0 | 31);	405	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
306		406
307	--enc->depth;	407	--enc->depth;
308	}	408	}
309		409
310	// encode objects, arrays and special \0=false and \1=true values.	410	// encode objects, arrays and special \0=false and \1=true values.
311	static void	411	static void
312	encode_rv (enc_t *enc, SV *sv)	412	encode_rv (enc_t *enc, SV *sv)
313	{	413	{
314	SvGETMAGIC (sv);	414	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		415
338	svtype svt = SvTYPE (sv);	416	svtype svt = SvTYPE (sv);
339		417
340	if (ecb_expect_false (SvOBJECT (sv)))	418	if (ecb_expect_false (SvOBJECT (sv)))
341	{	419	{
…		…
348	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	426	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
349	? cbor_tagged_stash	427	? cbor_tagged_stash
350	: gv_stashpv ("CBOR::XS::Tagged" , 1);	428	: gv_stashpv ("CBOR::XS::Tagged" , 1);
351		429
352	HV *stash = SvSTASH (sv);	430	HV *stash = SvSTASH (sv);
353	GV *method;
354		431
355	if (stash == boolean_stash)	432	if (stash == boolean_stash)
356	encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20);	433	{
		434	encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE);
		435	return;
		436	}
357	else if (stash == error_stash)	437	else if (stash == error_stash)
358	encode_ch (enc, 0xe0 | 23);	438	{
		439	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		440	return;
		441	}
359	else if (stash == tagged_stash)	442	else if (stash == tagged_stash)
360	{	443	{
361	if (svt != SVt_PVAV)	444	if (svt != SVt_PVAV)
362	croak ("encountered CBOR::XS::Tagged object that isn't an array");	445	croak ("encountered CBOR::XS::Tagged object that isn't an array");
363		446
364	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	447	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
365	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));	448	encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
		449
		450	return;
		451	}
		452	}
		453
		454	if (ecb_expect_false (SvREFCNT (sv) > 1)
		455	&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING))
		456	{
		457	if (!enc->shareable)
		458	enc->shareable = (HV *)sv_2mortal ((SV *)newHV ());
		459
		460	SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1);
		461
		462	if (SvOK (*svp))
366	}	463	{
		464	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		465	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		466	return;
		467	}
		468	else
		469	{
		470	sv_setuv (*svp, enc->shareable_idx);
		471	++enc->shareable_idx;
		472	encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE);
		473	}
		474	}
		475
		476	if (ecb_expect_false (SvOBJECT (sv)))
		477	{
		478	HV *stash = SvSTASH (sv);
		479	GV *method;
		480
		481	if (enc->cbor.flags & F_FORBID_OBJECTS)
		482	croak ("encountered object '%s', but forbid_objects is enabled",
		483	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
367	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	484	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
368	{	485	{
369	dSP;	486	dSP;
370		487
371	ENTER; SAVETMPS; PUSHMARK (SP);	488	ENTER; SAVETMPS;
		489	PUSHMARK (SP);
372	// we re-bless the reference to get overload and other niceties right	490	// we re-bless the reference to get overload and other niceties right
373	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	491	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
374		492
375	PUTBACK;	493	PUTBACK;
376	// G_SCALAR ensures that return value is 1	494	// G_SCALAR ensures that return value is 1
…		…
389	}	507	}
390	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	508	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
391	{	509	{
392	dSP;	510	dSP;
393		511
394	ENTER; SAVETMPS; PUSHMARK (SP);	512	ENTER; SAVETMPS;
		513	SAVESTACK_POS ();
		514	PUSHMARK (SP);
395	EXTEND (SP, 2);	515	EXTEND (SP, 2);
396	// we re-bless the reference to get overload and other niceties right	516	// we re-bless the reference to get overload and other niceties right
397	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	517	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
398	PUSHs (sv_cbor);	518	PUSHs (sv_cbor);
399		519
…		…
404	// catch this surprisingly common error	524	// catch this surprisingly common error
405	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	525	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));	526	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
407		527
408	encode_tag (enc, CBOR_TAG_PERL_OBJECT);	528	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
409	encode_uint (enc, 0x80, count + 1);	529	encode_uint (enc, MAJOR_ARRAY, count + 1);
410	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	530	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
411		531
412	while (count)	532	while (count)
413	encode_sv (enc, SP[1 - count--]);	533	encode_sv (enc, SP[1 - count--]);
414		534
415	PUTBACK;	535	PUTBACK;
…		…
436	{	556	{
437	double nv = SvNVX (sv);	557	double nv = SvNVX (sv);
438		558
439	need (enc, 9);	559	need (enc, 9);
440		560
441	if (ecb_expect_false (nv == (U32)nv))	561	if (ecb_expect_false (nv == (NV)(U32)nv))
442	encode_uint (enc, 0x00, (U32)nv);	562	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
443	//TODO: maybe I32?	563	//TODO: maybe I32?
444	else if (ecb_expect_false (nv == (float)nv))	564	else if (ecb_expect_false (nv == (float)nv))
445	{	565	{
446	uint32_t fp = ecb_float_to_binary32 (nv);	566	uint32_t fp = ecb_float_to_binary32 (nv);
447		567
448	*enc->cur++ = 0xe0 | 26;	568	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
449		569
450	if (!ecb_big_endian ())	570	if (!ecb_big_endian ())
451	fp = ecb_bswap32 (fp);	571	fp = ecb_bswap32 (fp);
452		572
453	memcpy (enc->cur, &fp, 4);	573	memcpy (enc->cur, &fp, 4);
…		…
455	}	575	}
456	else	576	else
457	{	577	{
458	uint64_t fp = ecb_double_to_binary64 (nv);	578	uint64_t fp = ecb_double_to_binary64 (nv);
459		579
460	*enc->cur++ = 0xe0 | 27;	580	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
461		581
462	if (!ecb_big_endian ())	582	if (!ecb_big_endian ())
463	fp = ecb_bswap64 (fp);	583	fp = ecb_bswap64 (fp);
464		584
465	memcpy (enc->cur, &fp, 8);	585	memcpy (enc->cur, &fp, 8);
…		…
474		594
475	if (SvPOKp (sv))	595	if (SvPOKp (sv))
476	{	596	{
477	STRLEN len;	597	STRLEN len;
478	char *str = SvPV (sv, len);	598	char *str = SvPV (sv, len);
479	encode_str (enc, SvUTF8 (sv), str, len);	599	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
480	}	600	}
481	else if (SvNOKp (sv))	601	else if (SvNOKp (sv))
482	encode_nv (enc, sv);	602	encode_nv (enc, sv);
483	else if (SvIOKp (sv))	603	else if (SvIOKp (sv))
484	{	604	{
485	if (SvIsUV (sv))	605	if (SvIsUV (sv))
486	encode_uint (enc, 0x00, SvUVX (sv));	606	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
487	else if (SvIVX (sv) >= 0)	607	else if (SvIVX (sv) >= 0)
488	encode_uint (enc, 0x00, SvIVX (sv));	608	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
489	else	609	else
490	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	610	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
491	}	611	}
492	else if (SvROK (sv))	612	else if (SvROK (sv))
493	encode_rv (enc, SvRV (sv));	613	encode_rv (enc, SvRV (sv));
494	else if (!SvOK (sv))	614	else if (!SvOK (sv))
495	encode_ch (enc, 0xe0 | 22);	615	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
496	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	616	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
497	encode_ch (enc, 0xe0 | 23);	617	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
498	else	618	else
499	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",	619	croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data",
500	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	620	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
501	}	621	}
502		622
503	static SV *	623	static SV *
504	encode_cbor (SV *scalar, CBOR *cbor)	624	encode_cbor (SV *scalar, CBOR *cbor)
505	{	625	{
506	enc_t enc = { };	626	enc_t enc = { 0 };
507		627
508	enc.cbor = *cbor;	628	enc.cbor = *cbor;
509	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	629	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
510	enc.cur = SvPVX (enc.sv);	630	enc.cur = SvPVX (enc.sv);
511	enc.end = SvEND (enc.sv);	631	enc.end = SvEND (enc.sv);
512		632
513	SvPOK_only (enc.sv);	633	SvPOK_only (enc.sv);
514		634
515	if (cbor->flags & F_ALLOW_STRINGREF)	635	if (cbor->flags & F_PACK_STRINGS)
516	{	636	{
517	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);	637	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
518	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());	638	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
519	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());	639	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
520	}	640	}
…		…
542	CBOR cbor;	662	CBOR cbor;
543	U32 depth; // recursion depth	663	U32 depth; // recursion depth
544	U32 maxdepth; // recursion depth limit	664	U32 maxdepth; // recursion depth limit
545	AV *shareable;	665	AV *shareable;
546	AV *stringref;	666	AV *stringref;
		667	SV *decode_tagged;
		668	SV *err_sv; // optional sv for error, needs to be freed
547	} dec_t;	669	} dec_t;
548		670
549	#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE	671	// set dec->err to ERRSV
		672	ecb_cold static void
		673	err_errsv (dec_t *dec)
		674	{
		675	if (!dec->err)
		676	{
		677	dec->err_sv = newSVsv (ERRSV);
550		678
551	#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data")	679	// chop off the trailing \n
		680	SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1);
		681	*SvEND (dec->err_sv) = 0;
552		682
		683	dec->err = SvPVutf8_nolen (dec->err_sv);
		684	}
		685	}
		686
		687	// the following functions are used to reduce code size and help the compiler to optimise
		688	ecb_cold static void
		689	err_set (dec_t *dec, const char *reason)
		690	{
		691	if (!dec->err)
		692	dec->err = reason;
		693	}
		694
		695	ecb_cold static void
		696	err_unexpected_end (dec_t *dec)
		697	{
		698	err_set (dec, "unexpected end of CBOR data");
		699	}
		700
		701	ecb_cold static void
		702	err_nesting_exceeded (dec_t *dec)
		703	{
		704	err_set (dec, ERR_NESTING_EXCEEDED);
		705	}
		706
		707	#define ERR_DO(do) SB do; goto fail; SE
		708	#define ERR(reason) ERR_DO (err_set (dec, reason))
		709	#define ERR_ERRSV ERR_DO (err_errsv (dec))
		710
		711	#define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec))
		712
553	#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED)	713	#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	714	#define DEC_DEC_DEPTH --dec->depth
555		715
556	static UV	716	static UV
557	decode_uint (dec_t *dec)	717	decode_uint (dec_t *dec)
558	{	718	{
559	switch (*dec->cur & 31)	719	U8 m = *dec->cur & MINOR_MASK;
560	{	720	++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		721
566	case 24:	722	if (ecb_expect_true (m < LENGTH_EXT1))
		723	return m;
		724	else if (ecb_expect_true (m == LENGTH_EXT1))
		725	{
567	WANT (2);	726	WANT (1);
568	dec->cur += 2;	727	dec->cur += 1;
569	return dec->cur[-1];	728	return dec->cur[-1];
570		729	}
571	case 25:	730	else if (ecb_expect_true (m == LENGTH_EXT2))
		731	{
572	WANT (3);	732	WANT (2);
573	dec->cur += 3;	733	dec->cur += 2;
574	return (((UV)dec->cur[-2]) << 8)	734	return (((UV)dec->cur[-2]) << 8)
575	| ((UV)dec->cur[-1]);	735	| ((UV)dec->cur[-1]);
576		736	}
577	case 26:	737	else if (ecb_expect_true (m == LENGTH_EXT4))
		738	{
578	WANT (5);	739	WANT (4);
579	dec->cur += 5;	740	dec->cur += 4;
580	return (((UV)dec->cur[-4]) << 24)	741	return (((UV)dec->cur[-4]) << 24)
581	| (((UV)dec->cur[-3]) << 16)	742	| (((UV)dec->cur[-3]) << 16)
582	| (((UV)dec->cur[-2]) << 8)	743	| (((UV)dec->cur[-2]) << 8)
583	| ((UV)dec->cur[-1]);	744	| ((UV)dec->cur[-1]);
584		745	}
585	case 27:	746	else if (ecb_expect_true (m == LENGTH_EXT8))
		747	{
586	WANT (9);	748	WANT (8);
587	dec->cur += 9;	749	dec->cur += 8;
		750
		751	return
		752	#if UVSIZE < 8
		753	0
		754	#else
588	return (((UV)dec->cur[-8]) << 56)	755	(((UV)dec->cur[-8]) << 56)
589	| (((UV)dec->cur[-7]) << 48)	756	| (((UV)dec->cur[-7]) << 48)
590	| (((UV)dec->cur[-6]) << 40)	757	| (((UV)dec->cur[-6]) << 40)
591	| (((UV)dec->cur[-5]) << 32)	758	| (((UV)dec->cur[-5]) << 32)
		759	#endif
592	| (((UV)dec->cur[-4]) << 24)	760	| (((UV)dec->cur[-4]) << 24)
593	| (((UV)dec->cur[-3]) << 16)	761	| (((UV)dec->cur[-3]) << 16)
594	| (((UV)dec->cur[-2]) << 8)	762	| (((UV)dec->cur[-2]) << 8)
595	| ((UV)dec->cur[-1]);	763	| ((UV)dec->cur[-1]);
596		764	}
597	default:	765	else
598	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	766	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
599	}
600		767
601	fail:	768	fail:
602	return 0;	769	return 0;
603	}	770	}
604		771
…		…
609	{	776	{
610	AV *av = newAV ();	777	AV *av = newAV ();
611		778
612	DEC_INC_DEPTH;	779	DEC_INC_DEPTH;
613		780
614	if ((*dec->cur & 31) == 31)	781	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
615	{	782	{
616	++dec->cur;	783	++dec->cur;
617		784
618	for (;;)	785	for (;;)
619	{	786	{
620	WANT (1);	787	WANT (1);
621		788
622	if (*dec->cur == (0xe0 | 31))	789	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
623	{	790	{
624	++dec->cur;	791	++dec->cur;
625	break;	792	break;
626	}	793	}
627		794
628	av_push (av, decode_sv (dec));	795	av_push (av, decode_sv (dec));
629	}	796	}
630	}	797	}
631	else	798	else
632	{	799	{
633	int i, len = decode_uint (dec);	800	UV i, len = decode_uint (dec);
634		801
		802	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);	803	av_fill (av, len - 1);
636		804
637	for (i = 0; i < len; ++i)	805	for (i = 0; i < len; ++i)
638	AvARRAY (av)[i] = decode_sv (dec);	806	AvARRAY (av)[i] = decode_sv (dec);
639	}	807	}
…		…
652	{	820	{
653	// for speed reasons, we specialcase single-string	821	// for speed reasons, we specialcase single-string
654	// byte or utf-8 strings as keys, but only when !stringref	822	// byte or utf-8 strings as keys, but only when !stringref
655		823
656	if (ecb_expect_true (!dec->stringref))	824	if (ecb_expect_true (!dec->stringref))
657	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	825	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
658	{	826	{
659	I32 len = decode_uint (dec);	827	STRLEN len = decode_uint (dec);
660	char *key = (char *)dec->cur;	828	char *key = (char *)dec->cur;
661		829
		830	WANT (len);
662	dec->cur += len;	831	dec->cur += len;
663		832
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);	833	hv_store (hv, key, len, decode_sv (dec), 0);
668		834
669	return;	835	return;
670	}	836	}
671	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	837	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
672	{	838	{
673	I32 len = decode_uint (dec);	839	STRLEN len = decode_uint (dec);
674	char *key = (char *)dec->cur;	840	char *key = (char *)dec->cur;
675		841
		842	WANT (len);
676	dec->cur += len;	843	dec->cur += len;
677		844
678	if (ecb_expect_false (dec->stringref))	845	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
679	av_push (dec->stringref, newSVpvn_utf8 (key, len, 1));	846	if (!is_utf8_string (key, len))
		847	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
680		848
681	hv_store (hv, key, -len, decode_sv (dec), 0);	849	hv_store (hv, key, -len, decode_sv (dec), 0);
682		850
683	return;	851	return;
684	}	852	}
685		853
686	SV *k = decode_sv (dec);	854	SV *k = decode_sv (dec);
687	SV *v = decode_sv (dec);	855	SV *v = decode_sv (dec);
688		856
		857	// we leak memory if uncaught exceptions are thrown by random magical
		858	// methods, and this is hopefully the only place where it can happen,
		859	// so if there is a chance of an exception, take the very slow path.
		860	// since catching exceptions is "undocumented/internal/forbidden" by
		861	// the new p5p powers, we need to call out to a perl function :/
		862	if (ecb_expect_false (SvAMAGIC (k)))
		863	{
		864	dSP;
		865
		866	ENTER; SAVETMPS;
		867	PUSHMARK (SP);
		868	EXTEND (SP, 3);
		869	PUSHs (sv_2mortal (newRV_inc ((SV *)hv)));
		870	PUSHs (sv_2mortal (k));
		871	PUSHs (sv_2mortal (v));
		872
		873	PUTBACK;
		874	call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL);
		875	SPAGAIN;
		876
		877	FREETMPS; LEAVE;
		878
		879	if (SvTRUE (ERRSV))
		880	ERR_ERRSV;
		881
		882	return;
		883	}
		884
689	hv_store_ent (hv, k, v, 0);	885	hv_store_ent (hv, k, v, 0);
690	SvREFCNT_dec (k);	886	SvREFCNT_dec (k);
		887
		888	fail:
		889	;
691	}	890	}
692		891
693	static SV *	892	static SV *
694	decode_hv (dec_t *dec)	893	decode_hv (dec_t *dec)
695	{	894	{
696	HV *hv = newHV ();	895	HV *hv = newHV ();
697		896
698	DEC_INC_DEPTH;	897	DEC_INC_DEPTH;
699		898
700	if ((*dec->cur & 31) == 31)	899	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
701	{	900	{
702	++dec->cur;	901	++dec->cur;
703		902
704	for (;;)	903	for (;;)
705	{	904	{
706	WANT (1);	905	WANT (1);
707		906
708	if (*dec->cur == (0xe0 | 31))	907	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
709	{	908	{
710	++dec->cur;	909	++dec->cur;
711	break;	910	break;
712	}	911	}
713		912
714	decode_he (dec, hv);	913	decode_he (dec, hv);
715	}	914	}
716	}	915	}
717	else	916	else
718	{	917	{
719	int pairs = decode_uint (dec);	918	UV pairs = decode_uint (dec);
		919
		920	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
720		921
721	while (pairs--)	922	while (pairs--)
722	decode_he (dec, hv);	923	decode_he (dec, hv);
723	}	924	}
724		925
…		…
734	static SV *	935	static SV *
735	decode_str (dec_t *dec, int utf8)	936	decode_str (dec_t *dec, int utf8)
736	{	937	{
737	SV *sv = 0;	938	SV *sv = 0;
738		939
739	if ((*dec->cur & 31) == 31)	940	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
740	{	941	{
		942	// indefinite length strings
741	++dec->cur;	943	++dec->cur;
742		944
		945	U8 major = *dec->cur & MAJOR_MISC;
		946
743	sv = newSVpvn ("", 0);	947	sv = newSVpvn ("", 0);
744		948
745	// not very fast, and certainly not robust against illegal input
746	for (;;)	949	for (;;)
747	{	950	{
748	WANT (1);	951	WANT (1);
749		952
750	if (*dec->cur == (0xe0 | 31))	953	if ((*dec->cur - major) > LENGTH_EXT8)
		954	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
751	{	955	{
752	++dec->cur;	956	++dec->cur;
753	break;	957	break;
754	}	958	}
		959	else
		960	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
755		961
756	sv_catsv (sv, decode_sv (dec));	962	STRLEN len = decode_uint (dec);
		963
		964	WANT (len);
		965	sv_catpvn (sv, dec->cur, len);
		966	dec->cur += len;
757	}	967	}
758	}	968	}
759	else	969	else
760	{	970	{
761	STRLEN len = decode_uint (dec);	971	STRLEN len = decode_uint (dec);
…		…
768	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))	978	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
769	av_push (dec->stringref, SvREFCNT_inc_NN (sv));	979	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
770	}	980	}
771		981
772	if (utf8)	982	if (utf8)
		983	{
		984	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		985	if (!is_utf8_string (SvPVX (sv), SvCUR (sv)))
		986	ERR ("corrupted CBOR data (invalid UTF-8 in text string)");
		987
773	SvUTF8_on (sv);	988	SvUTF8_on (sv);
		989	}
774		990
775	return sv;	991	return sv;
776		992
777	fail:	993	fail:
778	SvREFCNT_dec (sv);	994	SvREFCNT_dec (sv);
…		…
797	sv = newRV_noinc (decode_sv (dec));	1013	sv = newRV_noinc (decode_sv (dec));
798	break;	1014	break;
799		1015
800	case CBOR_TAG_STRINGREF_NAMESPACE:	1016	case CBOR_TAG_STRINGREF_NAMESPACE:
801	{	1017	{
		1018	// do nmot use SAVETMPS/FREETMPS, as these will
		1019	// erase mortalised caches, e.g. "shareable"
802	ENTER; SAVETMPS;	1020	ENTER;
803		1021
804	SAVESPTR (dec->stringref);	1022	SAVESPTR (dec->stringref);
805	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());	1023	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
806		1024
807	sv = decode_sv (dec);	1025	sv = decode_sv (dec);
808		1026
809	FREETMPS; LEAVE;	1027	LEAVE;
810	}	1028	}
811	break;	1029	break;
812		1030
813	case CBOR_TAG_STRINGREF:	1031	case CBOR_TAG_STRINGREF:
814	{	1032	{
815	if ((*dec->cur >> 5) != 0)	1033	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
816	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");	1034	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
817		1035
818	UV idx = decode_uint (dec);	1036	UV idx = decode_uint (dec);
819		1037
820	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))	1038	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
…		…
827	case CBOR_TAG_VALUE_SHAREABLE:	1045	case CBOR_TAG_VALUE_SHAREABLE:
828	{	1046	{
829	if (ecb_expect_false (!dec->shareable))	1047	if (ecb_expect_false (!dec->shareable))
830	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());	1048	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
831		1049
		1050	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1051	{
832	sv = newSV (0);	1052	sv = newSV (0);
833	av_push (dec->shareable, SvREFCNT_inc_NN (sv));	1053	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
834		1054
835	SV *osv = decode_sv (dec);	1055	SV *osv = decode_sv (dec);
836	sv_setsv (sv, osv);	1056	sv_setsv (sv, osv);
837	SvREFCNT_dec_NN (osv);	1057	SvREFCNT_dec_NN (osv);
		1058	}
		1059	else
		1060	{
		1061	av_push (dec->shareable, &PL_sv_undef);
		1062	int idx = AvFILLp (dec->shareable);
		1063	sv = decode_sv (dec);
		1064	av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv));
		1065	}
838	}	1066	}
839	break;	1067	break;
840		1068
841	case CBOR_TAG_VALUE_SHAREDREF:	1069	case CBOR_TAG_VALUE_SHAREDREF:
842	{	1070	{
843	if ((*dec->cur >> 5) != 0)	1071	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
844	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");	1072	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
845		1073
846	UV idx = decode_uint (dec);	1074	UV idx = decode_uint (dec);
847		1075
848	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))	1076	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
849	ERR ("corrupted CBOR data (sharedref index out of bounds)");	1077	ERR ("corrupted CBOR data (sharedref index out of bounds)");
850		1078
851	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);	1079	sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]);
		1080
		1081	if (sv == &PL_sv_undef)
		1082	ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled");
852	}	1083	}
853	break;	1084	break;
854		1085
855	case CBOR_TAG_PERL_OBJECT:	1086	case CBOR_TAG_PERL_OBJECT:
856	{	1087	{
		1088	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1089	goto filter;
		1090
857	sv = decode_sv (dec);	1091	sv = decode_sv (dec);
858		1092
859	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1093	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
860	ERR ("corrupted CBOR data (non-array perl object)");	1094	ERR ("corrupted CBOR data (non-array perl object)");
861		1095
…		…
871	if (!method)	1105	if (!method)
872	ERR ("cannot decode perl-object (package does not have a THAW method)");	1106	ERR ("cannot decode perl-object (package does not have a THAW method)");
873		1107
874	dSP;	1108	dSP;
875		1109
876	ENTER; SAVETMPS; PUSHMARK (SP);	1110	ENTER; SAVETMPS;
		1111	PUSHMARK (SP);
877	EXTEND (SP, len + 1);	1112	EXTEND (SP, len + 1);
878	// we re-bless the reference to get overload and other niceties right	1113	// we re-bless the reference to get overload and other niceties right
879	PUSHs (*av_fetch (av, 0, 1));	1114	PUSHs (*av_fetch (av, 0, 1));
880	PUSHs (sv_cbor);	1115	PUSHs (sv_cbor);
881		1116
…		…
889	SPAGAIN;	1124	SPAGAIN;
890		1125
891	if (SvTRUE (ERRSV))	1126	if (SvTRUE (ERRSV))
892	{	1127	{
893	FREETMPS; LEAVE;	1128	FREETMPS; LEAVE;
894	ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV))));	1129	ERR_ERRSV;
895	}	1130	}
896		1131
897	SvREFCNT_dec (sv);	1132	SvREFCNT_dec (sv);
898	sv = SvREFCNT_inc (POPs);	1133	sv = SvREFCNT_inc (POPs);
899		1134
…		…
902	FREETMPS; LEAVE;	1137	FREETMPS; LEAVE;
903	}	1138	}
904	break;	1139	break;
905		1140
906	default:	1141	default:
		1142	filter:
907	{	1143	{
		1144	SV *tag_sv = newSVuv (tag);
		1145
908	sv = decode_sv (dec);	1146	sv = decode_sv (dec);
909		1147
		1148	dSP;
		1149	ENTER; SAVETMPS;
		1150	SAVESTACK_POS ();
		1151	PUSHMARK (SP);
		1152	EXTEND (SP, 2);
		1153	PUSHs (tag_sv);
		1154	PUSHs (sv);
		1155
		1156	PUTBACK;
		1157	int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL);
		1158	SPAGAIN;
		1159
		1160	if (SvTRUE (ERRSV))
		1161	{
		1162	SvREFCNT_dec (tag_sv);
		1163	FREETMPS; LEAVE;
		1164	ERR_ERRSV;
		1165	}
		1166
		1167	if (count)
		1168	{
		1169	SvREFCNT_dec (tag_sv);
		1170	SvREFCNT_dec (sv);
		1171	sv = SvREFCNT_inc (POPs);
		1172	}
		1173	else
		1174	{
910	AV *av = newAV ();	1175	AV *av = newAV ();
911	av_push (av, newSVuv (tag));	1176	av_push (av, tag_sv);
912	av_push (av, sv);	1177	av_push (av, sv);
913		1178
914	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1179	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
915	? cbor_tagged_stash	1180	? cbor_tagged_stash
916	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1181	: gv_stashpv ("CBOR::XS::Tagged" , 1);
917
918	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);	1182	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1183	}
		1184
		1185	PUTBACK;
		1186
		1187	FREETMPS; LEAVE;
919	}	1188	}
920	break;	1189	break;
921	}	1190	}
922		1191
923	return sv;	1192	return sv;
…		…
930	static SV *	1199	static SV *
931	decode_sv (dec_t *dec)	1200	decode_sv (dec_t *dec)
932	{	1201	{
933	WANT (1);	1202	WANT (1);
934		1203
935	switch (*dec->cur >> 5)	1204	switch (*dec->cur >> MAJOR_SHIFT)
936	{	1205	{
937	case 0: // unsigned int	1206	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
938	return newSVuv (decode_uint (dec));	1207	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
939	case 1: // negative int	1208	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
940	return newSViv (-1 - (IV)decode_uint (dec));	1209	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
941	case 2: // octet string	1210	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
942	return decode_str (dec, 0);	1211	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
943	case 3: // utf-8 string	1212	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
944	return decode_str (dec, 1);	1213
945	case 4: // array	1214	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)	1215	switch (*dec->cur++ & MINOR_MASK)
953	{	1216	{
954	case 20:	1217	case SIMPLE_FALSE:
955	#if CBOR_SLOW	1218	#if CBOR_SLOW
956	types_false = get_bool ("Types::Serialiser::false");	1219	types_false = get_bool ("Types::Serialiser::false");
957	#endif	1220	#endif
958	return newSVsv (types_false);	1221	return newSVsv (types_false);
959	case 21:	1222	case SIMPLE_TRUE:
960	#if CBOR_SLOW	1223	#if CBOR_SLOW
961	types_true = get_bool ("Types::Serialiser::true");	1224	types_true = get_bool ("Types::Serialiser::true");
962	#endif	1225	#endif
963	return newSVsv (types_true);	1226	return newSVsv (types_true);
964	case 22:	1227	case SIMPLE_NULL:
965	return newSVsv (&PL_sv_undef);	1228	return newSVsv (&PL_sv_undef);
966	case 23:	1229	case SIMPLE_UNDEF:
967	#if CBOR_SLOW	1230	#if CBOR_SLOW
968	types_error = get_bool ("Types::Serialiser::error");	1231	types_error = get_bool ("Types::Serialiser::error");
969	#endif	1232	#endif
970	return newSVsv (types_error);	1233	return newSVsv (types_error);
971		1234
972	case 25:	1235	case MISC_FLOAT16:
973	{	1236	{
974	WANT (2);	1237	WANT (2);
975		1238
976	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1239	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
977	dec->cur += 2;	1240	dec->cur += 2;
978		1241
979	return newSVnv (ecb_binary16_to_float (fp));	1242	return newSVnv (ecb_binary16_to_float (fp));
980	}	1243	}
981		1244
982	case 26:	1245	case MISC_FLOAT32:
983	{	1246	{
984	uint32_t fp;	1247	uint32_t fp;
985	WANT (4);	1248	WANT (4);
986	memcpy (&fp, dec->cur, 4);	1249	memcpy (&fp, dec->cur, 4);
987	dec->cur += 4;	1250	dec->cur += 4;
…		…
990	fp = ecb_bswap32 (fp);	1253	fp = ecb_bswap32 (fp);
991		1254
992	return newSVnv (ecb_binary32_to_float (fp));	1255	return newSVnv (ecb_binary32_to_float (fp));
993	}	1256	}
994		1257
995	case 27:	1258	case MISC_FLOAT64:
996	{	1259	{
997	uint64_t fp;	1260	uint64_t fp;
998	WANT (8);	1261	WANT (8);
999	memcpy (&fp, dec->cur, 8);	1262	memcpy (&fp, dec->cur, 8);
1000	dec->cur += 8;	1263	dec->cur += 8;
…		…
1003	fp = ecb_bswap64 (fp);	1266	fp = ecb_bswap64 (fp);
1004		1267
1005	return newSVnv (ecb_binary64_to_double (fp));	1268	return newSVnv (ecb_binary64_to_double (fp));
1006	}	1269	}
1007		1270
1008	// 0..19 unassigned	1271	// 0..19 unassigned simple
1009	// 24 reserved + unassigned (reserved values are not encodable)	1272	// 24 reserved + unassigned simple (reserved values are not encodable)
		1273	// 28-30 unassigned misc
		1274	// 31 break code
1010	default:	1275	default:
1011	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1276	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
1012	}	1277	}
1013		1278
1014	break;	1279	break;
1015	}	1280	}
1016		1281
…		…
1019	}	1284	}
1020		1285
1021	static SV *	1286	static SV *
1022	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1287	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
1023	{	1288	{
1024	dec_t dec = { };	1289	dec_t dec = { 0 };
1025	SV *sv;	1290	SV *sv;
1026	STRLEN len;	1291	STRLEN len;
1027	char *data = SvPVbyte (string, len);	1292	char *data = SvPVbyte (string, len);
1028		1293
1029	if (len > cbor->max_size && cbor->max_size)	1294	if (len > cbor->max_size && cbor->max_size)
…		…
1043	if (dec.cur != dec.end && !dec.err)	1308	if (dec.cur != dec.end && !dec.err)
1044	dec.err = "garbage after CBOR object";	1309	dec.err = "garbage after CBOR object";
1045		1310
1046	if (dec.err)	1311	if (dec.err)
1047	{	1312	{
		1313	if (dec.shareable)
		1314	{
		1315	// need to break cyclic links, which would all be in shareable
		1316	int i;
		1317	SV **svp;
		1318
		1319	for (i = av_len (dec.shareable) + 1; i--; )
		1320	if ((svp = av_fetch (dec.shareable, i, 0)))
		1321	sv_setsv (*svp, &PL_sv_undef);
		1322	}
		1323
1048	SvREFCNT_dec (sv);	1324	SvREFCNT_dec (sv);
		1325
		1326	if (dec.err_sv)
		1327	sv_2mortal (dec.err_sv);
		1328
1049	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);	1329	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur);
1050	}	1330	}
1051		1331
1052	sv = sv_2mortal (sv);	1332	sv = sv_2mortal (sv);
1053		1333
1054	return sv;	1334	return sv;
1055	}	1335	}
1056		1336
		1337	/////////////////////////////////////////////////////////////////////////////
		1338	// incremental parser
		1339
		1340	#define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0)
		1341
		1342	// returns 0 for notyet, 1 for success or error
		1343	static int
		1344	incr_parse (CBOR *self, SV *cborstr)
		1345	{
		1346	STRLEN cur;
		1347	SvPV (cborstr, cur);
		1348
		1349	while (ecb_expect_true (self->incr_need <= cur))
		1350	{
		1351	// table of integer count bytes
		1352	static I8 incr_len[MINOR_MASK + 1] = {
		1353	0, 0, 0, 0, 0, 0, 0, 0,
		1354	0, 0, 0, 0, 0, 0, 0, 0,
		1355	0, 0, 0, 0, 0, 0, 0, 0,
		1356	1, 2, 4, 8,-1,-1,-1,-2
		1357	};
		1358
		1359	const U8 *p = SvPVX (cborstr) + self->incr_pos;
		1360	U8 m = *p & MINOR_MASK;
		1361	IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1362	I8 ilen = incr_len[m];
		1363
		1364	self->incr_need = self->incr_pos + 1;
		1365
		1366	if (ecb_expect_false (ilen < 0))
		1367	{
		1368	if (m != MINOR_INDEF)
		1369	return 1; // error
		1370
		1371	if (*p == (MAJOR_MISC | MINOR_INDEF))
		1372	{
		1373	if (count >= 0)
		1374	return 1; // error
		1375
		1376	count = 1;
		1377	}
		1378	else
		1379	{
		1380	av_push (self->incr_count, newSViv (-1)); //TODO: nest
		1381	count = -1;
		1382	}
		1383	}
		1384	else
		1385	{
		1386	self->incr_need += ilen;
		1387	if (ecb_expect_false (self->incr_need > cur))
		1388	return 0;
		1389
		1390	int major = *p >> MAJOR_SHIFT;
		1391
		1392	switch (major)
		1393	{
		1394	case MAJOR_TAG >> MAJOR_SHIFT:
		1395	++count; // tags merely prefix another value
		1396	break;
		1397
		1398	case MAJOR_BYTES >> MAJOR_SHIFT:
		1399	case MAJOR_TEXT >> MAJOR_SHIFT:
		1400	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1401	case MAJOR_MAP >> MAJOR_SHIFT:
		1402	{
		1403	UV len;
		1404
		1405	if (ecb_expect_false (ilen))
		1406	{
		1407	len = 0;
		1408
		1409	do {
		1410	len = (len << 8) | *++p;
		1411	} while (--ilen);
		1412	}
		1413	else
		1414	len = m;
		1415
		1416	switch (major)
		1417	{
		1418	case MAJOR_BYTES >> MAJOR_SHIFT:
		1419	case MAJOR_TEXT >> MAJOR_SHIFT:
		1420	self->incr_need += len;
		1421	if (ecb_expect_false (self->incr_need > cur))
		1422	return 0;
		1423
		1424	break;
		1425
		1426	case MAJOR_MAP >> MAJOR_SHIFT:
		1427	len <<= 1;
		1428	case MAJOR_ARRAY >> MAJOR_SHIFT:
		1429	if (len)
		1430	{
		1431	av_push (self->incr_count, newSViv (len + 1)); //TODO: nest
		1432	count = len + 1;
		1433	}
		1434	break;
		1435	}
		1436	}
		1437	}
		1438	}
		1439
		1440	self->incr_pos = self->incr_need;
		1441
		1442	if (count > 0)
		1443	{
		1444	while (!--count)
		1445	{
		1446	if (!AvFILLp (self->incr_count))
		1447	return 1; // done
		1448
		1449	SvREFCNT_dec_NN (av_pop (self->incr_count));
		1450	count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]);
		1451	}
		1452
		1453	SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count;
		1454	}
		1455	}
		1456
		1457	return 0;
		1458	}
		1459
		1460
1057	/////////////////////////////////////////////////////////////////////////////	1461	/////////////////////////////////////////////////////////////////////////////
1058	// XS interface functions	1462	// XS interface functions
1059		1463
1060	MODULE = CBOR::XS PACKAGE = CBOR::XS	1464	MODULE = CBOR::XS PACKAGE = CBOR::XS
1061		1465
…		…
1069		1473
1070	types_true = get_bool ("Types::Serialiser::true" );	1474	types_true = get_bool ("Types::Serialiser::true" );
1071	types_false = get_bool ("Types::Serialiser::false");	1475	types_false = get_bool ("Types::Serialiser::false");
1072	types_error = get_bool ("Types::Serialiser::error");	1476	types_error = get_bool ("Types::Serialiser::error");
1073		1477
		1478	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1479
1074	sv_cbor = newSVpv ("CBOR", 0);	1480	sv_cbor = newSVpv ("CBOR", 0);
1075	SvREADONLY_on (sv_cbor);	1481	SvREADONLY_on (sv_cbor);
		1482
		1483	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
1076	}	1484	}
1077		1485
1078	PROTOTYPES: DISABLE	1486	PROTOTYPES: DISABLE
1079		1487
1080	void CLONE (...)	1488	void CLONE (...)
…		…
1099	void shrink (CBOR *self, int enable = 1)	1507	void shrink (CBOR *self, int enable = 1)
1100	ALIAS:	1508	ALIAS:
1101	shrink = F_SHRINK	1509	shrink = F_SHRINK
1102	allow_unknown = F_ALLOW_UNKNOWN	1510	allow_unknown = F_ALLOW_UNKNOWN
1103	allow_sharing = F_ALLOW_SHARING	1511	allow_sharing = F_ALLOW_SHARING
1104	allow_stringref = F_ALLOW_STRINGREF	1512	allow_cycles = F_ALLOW_CYCLES
		1513	forbid_objects = F_FORBID_OBJECTS
		1514	pack_strings = F_PACK_STRINGS
		1515	text_keys = F_TEXT_KEYS
		1516	text_strings = F_TEXT_STRINGS
		1517	validate_utf8 = F_VALIDATE_UTF8
1105	PPCODE:	1518	PPCODE:
1106	{	1519	{
1107	if (enable)	1520	if (enable)
1108	self->flags |= ix;	1521	self->flags |= ix;
1109	else	1522	else
…		…
1115	void get_shrink (CBOR *self)	1528	void get_shrink (CBOR *self)
1116	ALIAS:	1529	ALIAS:
1117	get_shrink = F_SHRINK	1530	get_shrink = F_SHRINK
1118	get_allow_unknown = F_ALLOW_UNKNOWN	1531	get_allow_unknown = F_ALLOW_UNKNOWN
1119	get_allow_sharing = F_ALLOW_SHARING	1532	get_allow_sharing = F_ALLOW_SHARING
1120	get_allow_stringref = F_ALLOW_STRINGREF	1533	get_allow_cycles = F_ALLOW_CYCLES
		1534	get_forbid_objects = F_FORBID_OBJECTS
		1535	get_pack_strings = F_PACK_STRINGS
		1536	get_text_keys = F_TEXT_KEYS
		1537	get_text_strings = F_TEXT_STRINGS
		1538	get_validate_utf8 = F_VALIDATE_UTF8
1121	PPCODE:	1539	PPCODE:
1122	XPUSHs (boolSV (self->flags & ix));	1540	XPUSHs (boolSV (self->flags & ix));
1123		1541
1124	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1542	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
1125	PPCODE:	1543	PPCODE:
…		…
1138	XPUSHs (ST (0));	1556	XPUSHs (ST (0));
1139		1557
1140	int get_max_size (CBOR *self)	1558	int get_max_size (CBOR *self)
1141	CODE:	1559	CODE:
1142	RETVAL = self->max_size;	1560	RETVAL = self->max_size;
		1561	OUTPUT:
		1562	RETVAL
		1563
		1564	void filter (CBOR *self, SV *filter = 0)
		1565	PPCODE:
		1566	SvREFCNT_dec (self->filter);
		1567	self->filter = filter ? newSVsv (filter) : filter;
		1568	XPUSHs (ST (0));
		1569
		1570	SV *get_filter (CBOR *self)
		1571	CODE:
		1572	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
1143	OUTPUT:	1573	OUTPUT:
1144	RETVAL	1574	RETVAL
1145		1575
1146	void encode (CBOR *self, SV *scalar)	1576	void encode (CBOR *self, SV *scalar)
1147	PPCODE:	1577	PPCODE:
…		…
1162	EXTEND (SP, 2);	1592	EXTEND (SP, 2);
1163	PUSHs (sv);	1593	PUSHs (sv);
1164	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1594	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1165	}	1595	}
1166		1596
		1597	void incr_parse (CBOR *self, SV *cborstr)
		1598	ALIAS:
		1599	incr_parse_multiple = 1
		1600	PPCODE:
		1601	{
		1602	if (SvUTF8 (cborstr))
		1603	sv_utf8_downgrade (cborstr, 0);
		1604
		1605	if (!self->incr_count)
		1606	{
		1607	self->incr_count = newAV ();
		1608	self->incr_pos = 0;
		1609	self->incr_need = 1;
		1610
		1611	av_push (self->incr_count, newSViv (1));
		1612	}
		1613
		1614	do
		1615	{
		1616	if (!incr_parse (self, cborstr))
		1617	{
		1618	if (self->incr_need > self->max_size && self->max_size)
		1619	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
		1620	(unsigned long)self->incr_need, (unsigned long)self->max_size);
		1621
		1622	break;
		1623	}
		1624
		1625	SV *sv;
		1626	char *offset;
		1627
		1628	PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN;
		1629	XPUSHs (sv);
		1630
		1631	sv_chop (cborstr, offset);
		1632
		1633	av_clear (self->incr_count);
		1634	av_push (self->incr_count, newSViv (1));
		1635
		1636	self->incr_pos = 0;
		1637	self->incr_need = self->incr_pos + 1;
		1638	}
		1639	while (ix);
		1640	}
		1641
		1642	void incr_reset (CBOR *self)
		1643	CODE:
		1644	{
		1645	SvREFCNT_dec (self->incr_count);
		1646	self->incr_count = 0;
		1647	}
		1648
		1649	void DESTROY (CBOR *self)
		1650	PPCODE:
		1651	cbor_free (self);
		1652
1167	PROTOTYPES: ENABLE	1653	PROTOTYPES: ENABLE
1168		1654
1169	void encode_cbor (SV *scalar)	1655	void encode_cbor (SV *scalar)
		1656	ALIAS:
		1657	encode_cbor = 0
		1658	encode_cbor_sharing = F_ALLOW_SHARING
1170	PPCODE:	1659	PPCODE:
1171	{	1660	{
1172	CBOR cbor;	1661	CBOR cbor;
1173	cbor_init (&cbor);	1662	cbor_init (&cbor);
		1663	cbor.flags |= ix;
1174	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1664	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1175	XPUSHs (scalar);	1665	XPUSHs (scalar);
1176	}	1666	}
1177		1667
1178	void decode_cbor (SV *cborstr)	1668	void decode_cbor (SV *cborstr)

Diff Legend

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