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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.16 by root, Tue Oct 29 20:59:16 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
29	CBOR_TAG_PERL_OBJECT = 256,	71	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
30	CBOR_TAG_GENERIC_OBJECT = 257,	72	CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object
		73	CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object
		74	CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing
		75	CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing
		76	CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref
		77	CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection
31		78
32	// rfc7049	79	// rfc7049
33	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8	80	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
34	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any	81	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
35	CBOR_TAG_POS_BIGNUM = 2, // byte string	82	CBOR_TAG_POS_BIGNUM = 2, // byte string
36	CBOR_TAG_NEG_BIGNUM = 3, // byte string	83	CBOR_TAG_NEG_BIGNUM = 3, // byte string
37	CBOR_TAG_DECIMAL = 4, // decimal fraction, array	84	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
38	CBOR_TAG_BIGFLOAT = 5, // array	85	CBOR_TAG_BIGFLOAT = 5, // array
39		86
40	CBOR_TAG_CONV_B64U = 21, // base64url, any	87	CBOR_TAG_CONV_B64U = 21, // base64url, any
41	CBOR_TAG_CONV_B64 = 22, // base64, any	88	CBOR_TAG_CONV_B64 = 22, // base64, any
42	CBOR_TAG_CONV_HEX = 23, // base16, any	89	CBOR_TAG_CONV_HEX = 23, // base16, any
43	CBOR_TAG_CBOR = 24, // embedded cbor, byte string	90	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
44		91
45	CBOR_TAG_URI = 32, // URI rfc3986, utf-8	92	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
46	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8	93	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
47	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8	94	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
48	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8	95	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
49	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8	96	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
50		97
51	CBOR_TAG_MAGIC = 55799 // self-describe cbor	98	CBOR_TAG_MAGIC = 55799, // self-describe cbor
52	};	99	};
53		100
54	#define F_SHRINK 0x00000200UL	101	#define F_SHRINK 0x00000001UL
55	#define F_ALLOW_UNKNOWN 0x00002000UL	102	#define F_ALLOW_UNKNOWN 0x00000002UL
		103	#define F_ALLOW_SHARING 0x00000004UL
		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
56		110
57	#define INIT_SIZE 32 // initial scalar size to be allocated	111	#define INIT_SIZE 32 // initial scalar size to be allocated
58		112
59	#define SB do {	113	#define SB do {
60	#define SE } while (0)	114	#define SE } while (0)
…		…
72	# define CBOR_SLOW 0	126	# define CBOR_SLOW 0
73	# define CBOR_STASH cbor_stash	127	# define CBOR_STASH cbor_stash
74	#endif	128	#endif
75		129
76	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::
77	static SV *types_true, *types_false, *types_error, *sv_cbor;	131	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
78		132
79	typedef struct {	133	typedef struct {
80	U32 flags;	134	U32 flags;
81	U32 max_depth;	135	U32 max_depth;
82	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.
83	} CBOR;	143	} CBOR;
84		144
85	ecb_inline void	145	ecb_inline void
86	cbor_init (CBOR *cbor)	146	cbor_init (CBOR *cbor)
87	{	147	{
88	Zero (cbor, 1, CBOR);	148	Zero (cbor, 1, CBOR);
89	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);
90	}	157	}
91		158
92	/////////////////////////////////////////////////////////////////////////////	159	/////////////////////////////////////////////////////////////////////////////
93	// utility functions	160	// utility functions
94		161
…		…
116	SvPV_renew (sv, SvCUR (sv) + 1);	183	SvPV_renew (sv, SvCUR (sv) + 1);
117	#endif	184	#endif
118	}	185	}
119	}	186	}
120		187
121	/////////////////////////////////////////////////////////////////////////////	188	// minimum length of a string to be registered for stringref
122	// fp hell	189	ecb_inline int
123		190	minimum_string_length (UV idx)
124	//TODO	191	{
		192	return idx <= 23 ? 3
		193	: idx <= 0xffU ? 4
		194	: idx <= 0xffffU ? 5
		195	: idx <= 0xffffffffU ? 7
		196	: 11;
		197	}
125		198
126	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
127	// encoder	200	// encoder
128		201
129	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
132	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
133	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
134	SV *sv; // result scalar	207	SV *sv; // result scalar
135	CBOR cbor;	208	CBOR cbor;
136	U32 depth; // recursion level	209	U32 depth; // recursion level
		210	HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8)
		211	UV stringref_idx;
		212	HV *shareable; // ptr => index, or 0
		213	UV shareable_idx;
137	} enc_t;	214	} enc_t;
138		215
139	ecb_inline void	216	ecb_inline void
140	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
141	{	218	{
142	if (ecb_expect_false (enc->cur + len >= enc->end))	219	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
143	{	220	{
144	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	221	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
145	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	222	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
146	enc->cur = SvPVX (enc->sv) + cur;	223	enc->cur = SvPVX (enc->sv) + cur;
147	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	224	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
158	static void	235	static void
159	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
160	{	237	{
161	need (enc, 9);	238	need (enc, 9);
162		239
163	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
164	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
165	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
166	{	243	{
167	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
168	*enc->cur++ = len;	245	*enc->cur++ = len;
169	}	246	}
170	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
171	{	248	{
172	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
173	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
174	*enc->cur++ = len;	251	*enc->cur++ = len;
175	}	252	}
176	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
177	{	254	{
178	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
179	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
180	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
181	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
182	*enc->cur++ = len;	259	*enc->cur++ = len;
183	}	260	}
184	else	261	else
185	{	262	{
186	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
187	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
188	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
189	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
190	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
191	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
193	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
194	*enc->cur++ = len;	271	*enc->cur++ = len;
195	}	272	}
196	}	273	}
197		274
198	static void	275	ecb_inline void
		276	encode_tag (enc_t *enc, UV tag)
		277	{
		278	encode_uint (enc, MAJOR_TAG, tag);
		279	}
		280
		281	// exceptional (hopefully) slow path for byte strings that need to be utf8-encoded
		282	ecb_noinline static void
199	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
200	{	284	{
201	encode_uint (enc, utf8 ? 0x60 : 0x40, len);	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);
202	need (enc, len);	315	need (enc, len);
203	memcpy (enc->cur, str, len);	316	memcpy (enc->cur, str, len);
204	enc->cur += len;	317	enc->cur += len;
205	}	318	}
206		319
		320	ecb_inline void
		321	encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len)
		322	{
		323	if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS))
		324	{
		325	SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1);
		326
		327	if (SvOK (*svp))
		328	{
		329	// already registered, use stringref
		330	encode_tag (enc, CBOR_TAG_STRINGREF);
		331	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		332	return;
		333	}
		334	else if (len >= minimum_string_length (enc->stringref_idx))
		335	{
		336	// register only
		337	sv_setuv (*svp, enc->stringref_idx);
		338	++enc->stringref_idx;
		339	}
		340	}
		341
		342	encode_str (enc, upgrade_utf8, utf8, str, len);
		343	}
		344
207	static void encode_sv (enc_t *enc, SV *sv);	345	static void encode_sv (enc_t *enc, SV *sv);
208		346
209	static void	347	static void
210	encode_av (enc_t *enc, AV *av)	348	encode_av (enc_t *enc, AV *av)
211	{	349	{
…		…
214	if (enc->depth >= enc->cbor.max_depth)	352	if (enc->depth >= enc->cbor.max_depth)
215	croak (ERR_NESTING_EXCEEDED);	353	croak (ERR_NESTING_EXCEEDED);
216		354
217	++enc->depth;	355	++enc->depth;
218		356
219	encode_uint (enc, 0x80, len + 1);	357	encode_uint (enc, MAJOR_ARRAY, len + 1);
220		358
		359	if (SvMAGICAL (av))
221	for (i = 0; i <= len; ++i)	360	for (i = 0; i <= len; ++i)
222	{	361	{
223	SV **svp = av_fetch (av, i, 0);	362	SV **svp = av_fetch (av, i, 0);
224	encode_sv (enc, svp ? *svp : &PL_sv_undef);	363	encode_sv (enc, svp ? *svp : &PL_sv_undef);
225	}	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	}
226		371
227	--enc->depth;	372	--enc->depth;
228	}	373	}
229		374
230	static void	375	static void
…		…
239		384
240	int pairs = hv_iterinit (hv);	385	int pairs = hv_iterinit (hv);
241	int mg = SvMAGICAL (hv);	386	int mg = SvMAGICAL (hv);
242		387
243	if (mg)	388	if (mg)
244	encode_ch (enc, 0xa0 | 31);	389	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
245	else	390	else
246	encode_uint (enc, 0xa0, pairs);	391	encode_uint (enc, MAJOR_MAP, pairs);
247		392
248	while ((he = hv_iternext (hv)))	393	while ((he = hv_iternext (hv)))
249	{	394	{
250	if (HeKLEN (he) == HEf_SVKEY)	395	if (HeKLEN (he) == HEf_SVKEY)
251	encode_sv (enc, HeSVKEY (he));	396	encode_sv (enc, HeSVKEY (he));
252	else	397	else
253	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));
254		399
255	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));
256	}	401	}
257		402
258	if (mg)	403	if (mg)
259	encode_ch (enc, 0xe0 | 31);	404	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
260		405
261	--enc->depth;	406	--enc->depth;
262	}	407	}
263		408
264	// encode objects, arrays and special \0=false and \1=true values.	409	// encode objects, arrays and special \0=false and \1=true values.
265	static void	410	static void
266	encode_rv (enc_t *enc, SV *sv)	411	encode_rv (enc_t *enc, SV *sv)
267	{	412	{
268	svtype svt;
269
270	SvGETMAGIC (sv);	413	SvGETMAGIC (sv);
		414
271	svt = SvTYPE (sv);	415	svtype svt = SvTYPE (sv);
272		416
273	if (ecb_expect_false (SvOBJECT (sv)))	417	if (ecb_expect_false (SvOBJECT (sv)))
274	{	418	{
275	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash	419	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
276	? types_boolean_stash	420	? types_boolean_stash
…		…
281	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	425	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
282	? cbor_tagged_stash	426	? cbor_tagged_stash
283	: gv_stashpv ("CBOR::XS::Tagged" , 1);	427	: gv_stashpv ("CBOR::XS::Tagged" , 1);
284		428
285	HV *stash = SvSTASH (sv);	429	HV *stash = SvSTASH (sv);
286	GV *method;
287		430
288	if (stash == boolean_stash)	431	if (stash == boolean_stash)
289	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	}
290	else if (stash == error_stash)	436	else if (stash == error_stash)
291	encode_ch (enc, 0xe0 | 23);	437	{
		438	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		439	return;
		440	}
292	else if (stash == tagged_stash)	441	else if (stash == tagged_stash)
293	{	442	{
294	if (svt != SVt_PVAV)	443	if (svt != SVt_PVAV)
295	croak ("encountered CBOR::XS::Tagged object that isn't an array");	444	croak ("encountered CBOR::XS::Tagged object that isn't an array");
296		445
297	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	446	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
298	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))
299	}	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))));
300	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))	483	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
301	{	484	{
302	dSP;	485	dSP;
303		486
304	ENTER; SAVETMPS; PUSHMARK (SP);	487	ENTER; SAVETMPS;
		488	PUSHMARK (SP);
305	// 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
306	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	490	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
307		491
308	PUTBACK;	492	PUTBACK;
309	// G_SCALAR ensures that return value is 1	493	// G_SCALAR ensures that return value is 1
…		…
322	}	506	}
323	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)	507	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
324	{	508	{
325	dSP;	509	dSP;
326		510
327	ENTER; SAVETMPS; PUSHMARK (SP);	511	ENTER; SAVETMPS;
		512	SAVESTACK_POS ();
		513	PUSHMARK (SP);
328	EXTEND (SP, 2);	514	EXTEND (SP, 2);
329	// 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
330	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));	516	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
331	PUSHs (sv_cbor);	517	PUSHs (sv_cbor);
332		518
…		…
336		522
337	// catch this surprisingly common error	523	// catch this surprisingly common error
338	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)	524	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
339	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));	525	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
340		526
341	encode_uint (enc, 0xc0, CBOR_TAG_PERL_OBJECT);	527	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
342	encode_uint (enc, 0x80, count + 1);	528	encode_uint (enc, MAJOR_ARRAY, count + 1);
343	encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));	529	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
344		530
345	while (count)	531	while (count)
346	encode_sv (enc, SP[1 - count--]);	532	encode_sv (enc, SP[1 - count--]);
347		533
348	PUTBACK;	534	PUTBACK;
…		…
355	}	541	}
356	else if (svt == SVt_PVHV)	542	else if (svt == SVt_PVHV)
357	encode_hv (enc, (HV *)sv);	543	encode_hv (enc, (HV *)sv);
358	else if (svt == SVt_PVAV)	544	else if (svt == SVt_PVAV)
359	encode_av (enc, (AV *)sv);	545	encode_av (enc, (AV *)sv);
360	else if (svt < SVt_PVAV)
361	{
362	STRLEN len = 0;
363	char *pv = svt ? SvPV (sv, len) : 0;
364
365	if (len == 1 && *pv == '1')
366	encode_ch (enc, 0xe0 | 21);
367	else if (len == 1 && *pv == '0')
368	encode_ch (enc, 0xe0 | 20);
369	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
370	encode_ch (enc, 0xe0 | 23);
371	else
372	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
373	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
374	}
375	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
376	encode_ch (enc, 0xe0 | 23);
377	else	546	else
378	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	547	{
379	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	548	encode_tag (enc, CBOR_TAG_INDIRECTION);
		549	encode_sv (enc, sv);
		550	}
380	}	551	}
381		552
382	static void	553	static void
383	encode_nv (enc_t *enc, SV *sv)	554	encode_nv (enc_t *enc, SV *sv)
384	{	555	{
385	double nv = SvNVX (sv);	556	double nv = SvNVX (sv);
386		557
387	need (enc, 9);	558	need (enc, 9);
388		559
389	if (ecb_expect_false (nv == (U32)nv))	560	if (ecb_expect_false (nv == (NV)(U32)nv))
390	encode_uint (enc, 0x00, (U32)nv);	561	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
391	//TODO: maybe I32?	562	//TODO: maybe I32?
392	else if (ecb_expect_false (nv == (float)nv))	563	else if (ecb_expect_false (nv == (float)nv))
393	{	564	{
394	uint32_t fp = ecb_float_to_binary32 (nv);	565	uint32_t fp = ecb_float_to_binary32 (nv);
395		566
396	*enc->cur++ = 0xe0 | 26;	567	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
397		568
398	if (!ecb_big_endian ())	569	if (!ecb_big_endian ())
399	fp = ecb_bswap32 (fp);	570	fp = ecb_bswap32 (fp);
400		571
401	memcpy (enc->cur, &fp, 4);	572	memcpy (enc->cur, &fp, 4);
…		…
403	}	574	}
404	else	575	else
405	{	576	{
406	uint64_t fp = ecb_double_to_binary64 (nv);	577	uint64_t fp = ecb_double_to_binary64 (nv);
407		578
408	*enc->cur++ = 0xe0 | 27;	579	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
409		580
410	if (!ecb_big_endian ())	581	if (!ecb_big_endian ())
411	fp = ecb_bswap64 (fp);	582	fp = ecb_bswap64 (fp);
412		583
413	memcpy (enc->cur, &fp, 8);	584	memcpy (enc->cur, &fp, 8);
…		…
422		593
423	if (SvPOKp (sv))	594	if (SvPOKp (sv))
424	{	595	{
425	STRLEN len;	596	STRLEN len;
426	char *str = SvPV (sv, len);	597	char *str = SvPV (sv, len);
427	encode_str (enc, SvUTF8 (sv), str, len);	598	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
428	}	599	}
429	else if (SvNOKp (sv))	600	else if (SvNOKp (sv))
430	encode_nv (enc, sv);	601	encode_nv (enc, sv);
431	else if (SvIOKp (sv))	602	else if (SvIOKp (sv))
432	{	603	{
433	if (SvIsUV (sv))	604	if (SvIsUV (sv))
434	encode_uint (enc, 0x00, SvUVX (sv));	605	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
435	else if (SvIVX (sv) >= 0)	606	else if (SvIVX (sv) >= 0)
436	encode_uint (enc, 0x00, SvIVX (sv));	607	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
437	else	608	else
438	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	609	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
439	}	610	}
440	else if (SvROK (sv))	611	else if (SvROK (sv))
441	encode_rv (enc, SvRV (sv));	612	encode_rv (enc, SvRV (sv));
442	else if (!SvOK (sv))	613	else if (!SvOK (sv))
443	encode_ch (enc, 0xe0 | 22);	614	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
444	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	615	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
445	encode_ch (enc, 0xe0 | 23);	616	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
446	else	617	else
447	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",
448	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	619	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
449	}	620	}
450		621
451	static SV *	622	static SV *
452	encode_cbor (SV *scalar, CBOR *cbor)	623	encode_cbor (SV *scalar, CBOR *cbor)
453	{	624	{
454	enc_t enc;	625	enc_t enc = { 0 };
455		626
456	enc.cbor = *cbor;	627	enc.cbor = *cbor;
457	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	628	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
458	enc.cur = SvPVX (enc.sv);	629	enc.cur = SvPVX (enc.sv);
459	enc.end = SvEND (enc.sv);	630	enc.end = SvEND (enc.sv);
460	enc.depth = 0;
461		631
462	SvPOK_only (enc.sv);	632	SvPOK_only (enc.sv);
		633
		634	if (cbor->flags & F_PACK_STRINGS)
		635	{
		636	encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE);
		637	enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ());
		638	enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ());
		639	}
		640
463	encode_sv (&enc, scalar);	641	encode_sv (&enc, scalar);
464		642
465	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	643	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
466	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	644	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
467		645
…		…
481	U8 *end; // end of input string	659	U8 *end; // end of input string
482	const char *err; // parse error, if != 0	660	const char *err; // parse error, if != 0
483	CBOR cbor;	661	CBOR cbor;
484	U32 depth; // recursion depth	662	U32 depth; // recursion depth
485	U32 maxdepth; // recursion depth limit	663	U32 maxdepth; // recursion depth limit
		664	AV *shareable;
		665	AV *stringref;
		666	SV *decode_tagged;
		667	SV *err_sv; // optional sv for error, needs to be freed
486	} dec_t;	668	} dec_t;
487		669
488	#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);
489		677
490	#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;
491		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
492	#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)
493	#define DEC_DEC_DEPTH --dec->depth	713	#define DEC_DEC_DEPTH --dec->depth
494		714
495	static UV	715	static UV
496	decode_uint (dec_t *dec)	716	decode_uint (dec_t *dec)
497	{	717	{
498	switch (*dec->cur & 31)	718	U8 m = *dec->cur & MINOR_MASK;
499	{	719	++dec->cur;
500	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
501	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
502	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
503	return *dec->cur++ & 31;
504		720
505	case 24:	721	if (ecb_expect_true (m < LENGTH_EXT1))
		722	return m;
		723	else if (ecb_expect_true (m == LENGTH_EXT1))
		724	{
506	WANT (2);	725	WANT (1);
507	dec->cur += 2;	726	dec->cur += 1;
508	return dec->cur[-1];	727	return dec->cur[-1];
509		728	}
510	case 25:	729	else if (ecb_expect_true (m == LENGTH_EXT2))
		730	{
511	WANT (3);	731	WANT (2);
512	dec->cur += 3;	732	dec->cur += 2;
513	return (((UV)dec->cur[-2]) << 8)	733	return (((UV)dec->cur[-2]) << 8)
514	| ((UV)dec->cur[-1]);	734	| ((UV)dec->cur[-1]);
515		735	}
516	case 26:	736	else if (ecb_expect_true (m == LENGTH_EXT4))
		737	{
517	WANT (5);	738	WANT (4);
518	dec->cur += 5;	739	dec->cur += 4;
519	return (((UV)dec->cur[-4]) << 24)	740	return (((UV)dec->cur[-4]) << 24)
520	| (((UV)dec->cur[-3]) << 16)	741	| (((UV)dec->cur[-3]) << 16)
521	| (((UV)dec->cur[-2]) << 8)	742	| (((UV)dec->cur[-2]) << 8)
522	| ((UV)dec->cur[-1]);	743	| ((UV)dec->cur[-1]);
523		744	}
524	case 27:	745	else if (ecb_expect_true (m == LENGTH_EXT8))
		746	{
525	WANT (9);	747	WANT (8);
526	dec->cur += 9;	748	dec->cur += 8;
		749
		750	return
		751	#if UVSIZE < 8
		752	0
		753	#else
527	return (((UV)dec->cur[-8]) << 56)	754	(((UV)dec->cur[-8]) << 56)
528	| (((UV)dec->cur[-7]) << 48)	755	| (((UV)dec->cur[-7]) << 48)
529	| (((UV)dec->cur[-6]) << 40)	756	| (((UV)dec->cur[-6]) << 40)
530	| (((UV)dec->cur[-5]) << 32)	757	| (((UV)dec->cur[-5]) << 32)
		758	#endif
531	| (((UV)dec->cur[-4]) << 24)	759	| (((UV)dec->cur[-4]) << 24)
532	| (((UV)dec->cur[-3]) << 16)	760	| (((UV)dec->cur[-3]) << 16)
533	| (((UV)dec->cur[-2]) << 8)	761	| (((UV)dec->cur[-2]) << 8)
534	| ((UV)dec->cur[-1]);	762	| ((UV)dec->cur[-1]);
535		763	}
536	default:	764	else
537	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	765	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
538	}
539		766
540	fail:	767	fail:
541	return 0;	768	return 0;
542	}	769	}
543		770
…		…
548	{	775	{
549	AV *av = newAV ();	776	AV *av = newAV ();
550		777
551	DEC_INC_DEPTH;	778	DEC_INC_DEPTH;
552		779
553	if ((*dec->cur & 31) == 31)	780	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
554	{	781	{
555	++dec->cur;	782	++dec->cur;
556		783
557	for (;;)	784	for (;;)
558	{	785	{
559	WANT (1);	786	WANT (1);
560		787
561	if (*dec->cur == (0xe0 | 31))	788	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
562	{	789	{
563	++dec->cur;	790	++dec->cur;
564	break;	791	break;
565	}	792	}
566		793
567	av_push (av, decode_sv (dec));	794	av_push (av, decode_sv (dec));
568	}	795	}
569	}	796	}
570	else	797	else
571	{	798	{
572	int i, len = decode_uint (dec);	799	UV i, len = decode_uint (dec);
573		800
		801	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
574	av_fill (av, len - 1);	802	av_fill (av, len - 1);
575		803
576	for (i = 0; i < len; ++i)	804	for (i = 0; i < len; ++i)
577	AvARRAY (av)[i] = decode_sv (dec);	805	AvARRAY (av)[i] = decode_sv (dec);
578	}	806	}
…		…
588		816
589	static void	817	static void
590	decode_he (dec_t *dec, HV *hv)	818	decode_he (dec_t *dec, HV *hv)
591	{	819	{
592	// for speed reasons, we specialcase single-string	820	// for speed reasons, we specialcase single-string
593	// byte or utf-8 strings as keys.	821	// byte or utf-8 strings as keys, but only when !stringref
594		822
595	if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27)	823	if (ecb_expect_true (!dec->stringref))
		824	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
596	{	825	{
597	I32 len = decode_uint (dec);	826	STRLEN len = decode_uint (dec);
598	char *key = (char *)dec->cur;	827	char *key = (char *)dec->cur;
599		828
		829	WANT (len);
600	dec->cur += len;	830	dec->cur += len;
601		831
602	hv_store (hv, key, len, decode_sv (dec), 0);	832	hv_store (hv, key, len, decode_sv (dec), 0);
		833
		834	return;
603	}	835	}
604	else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27)	836	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
605	{	837	{
606	I32 len = decode_uint (dec);	838	STRLEN len = decode_uint (dec);
607	char *key = (char *)dec->cur;	839	char *key = (char *)dec->cur;
608		840
		841	WANT (len);
609	dec->cur += len;	842	dec->cur += len;
610		843
		844	if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8))
		845	if (!is_utf8_string (key, len))
		846	ERR ("corrupted CBOR data (invalid UTF-8 in map key)");
		847
611	hv_store (hv, key, -len, decode_sv (dec), 0);	848	hv_store (hv, key, -len, decode_sv (dec), 0);
		849
		850	return;
612	}	851	}
613	else	852
614	{
615	SV *k = decode_sv (dec);	853	SV *k = decode_sv (dec);
616	SV *v = decode_sv (dec);	854	SV *v = decode_sv (dec);
617		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
618	hv_store_ent (hv, k, v, 0);	884	hv_store_ent (hv, k, v, 0);
619	SvREFCNT_dec (k);	885	SvREFCNT_dec (k);
620	}	886
		887	fail:
		888	;
621	}	889	}
622		890
623	static SV *	891	static SV *
624	decode_hv (dec_t *dec)	892	decode_hv (dec_t *dec)
625	{	893	{
626	HV *hv = newHV ();	894	HV *hv = newHV ();
627		895
628	DEC_INC_DEPTH;	896	DEC_INC_DEPTH;
629		897
630	if ((*dec->cur & 31) == 31)	898	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
631	{	899	{
632	++dec->cur;	900	++dec->cur;
633		901
634	for (;;)	902	for (;;)
635	{	903	{
636	WANT (1);	904	WANT (1);
637		905
638	if (*dec->cur == (0xe0 | 31))	906	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
639	{	907	{
640	++dec->cur;	908	++dec->cur;
641	break;	909	break;
642	}	910	}
643		911
644	decode_he (dec, hv);	912	decode_he (dec, hv);
645	}	913	}
646	}	914	}
647	else	915	else
648	{	916	{
649	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
650		920
651	while (pairs--)	921	while (pairs--)
652	decode_he (dec, hv);	922	decode_he (dec, hv);
653	}	923	}
654		924
…		…
664	static SV *	934	static SV *
665	decode_str (dec_t *dec, int utf8)	935	decode_str (dec_t *dec, int utf8)
666	{	936	{
667	SV *sv = 0;	937	SV *sv = 0;
668		938
669	if ((*dec->cur & 31) == 31)	939	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
670	{	940	{
		941	// indefinite length strings
671	++dec->cur;	942	++dec->cur;
672		943
		944	U8 major = *dec->cur & MAJOR_MISC;
		945
673	sv = newSVpvn ("", 0);	946	sv = newSVpvn ("", 0);
674		947
675	// not very fast, and certainly not robust against illegal input
676	for (;;)	948	for (;;)
677	{	949	{
678	WANT (1);	950	WANT (1);
679		951
680	if (*dec->cur == (0xe0 | 31))	952	if ((*dec->cur - major) > LENGTH_EXT8)
		953	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
681	{	954	{
682	++dec->cur;	955	++dec->cur;
683	break;	956	break;
684	}	957	}
		958	else
		959	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
685		960
686	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;
687	}	966	}
688	}	967	}
689	else	968	else
690	{	969	{
691	STRLEN len = decode_uint (dec);	970	STRLEN len = decode_uint (dec);
692		971
693	WANT (len);	972	WANT (len);
694	sv = newSVpvn (dec->cur, len);	973	sv = newSVpvn (dec->cur, len);
695	dec->cur += len;	974	dec->cur += len;
		975
		976	if (ecb_expect_false (dec->stringref)
		977	&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1))
		978	av_push (dec->stringref, SvREFCNT_inc_NN (sv));
696	}	979	}
697		980
698	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
699	SvUTF8_on (sv);	987	SvUTF8_on (sv);
		988	}
700		989
701	return sv;	990	return sv;
702		991
703	fail:	992	fail:
704	SvREFCNT_dec (sv);	993	SvREFCNT_dec (sv);
…		…
706	}	995	}
707		996
708	static SV *	997	static SV *
709	decode_tagged (dec_t *dec)	998	decode_tagged (dec_t *dec)
710	{	999	{
		1000	SV *sv = 0;
711	UV tag = decode_uint (dec);	1001	UV tag = decode_uint (dec);
		1002
		1003	WANT (1);
		1004
		1005	switch (tag)
		1006	{
		1007	case CBOR_TAG_MAGIC:
712	SV *sv = decode_sv (dec);	1008	sv = decode_sv (dec);
		1009	break;
713		1010
714	if (tag == CBOR_TAG_MAGIC)	1011	case CBOR_TAG_INDIRECTION:
715	return sv;	1012	sv = newRV_noinc (decode_sv (dec));
716	else if (tag == CBOR_TAG_PERL_OBJECT)	1013	break;
717	{	1014
		1015	case CBOR_TAG_STRINGREF_NAMESPACE:
		1016	{
		1017	// do nmot use SAVETMPS/FREETMPS, as these will
		1018	// erase mortalised caches, e.g. "shareable"
		1019	ENTER;
		1020
		1021	SAVESPTR (dec->stringref);
		1022	dec->stringref = (AV *)sv_2mortal ((SV *)newAV ());
		1023
		1024	sv = decode_sv (dec);
		1025
		1026	LEAVE;
		1027	}
		1028	break;
		1029
		1030	case CBOR_TAG_STRINGREF:
		1031	{
		1032	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1033	ERR ("corrupted CBOR data (stringref index not an unsigned integer)");
		1034
		1035	UV idx = decode_uint (dec);
		1036
		1037	if (!dec->stringref || (int)idx > AvFILLp (dec->stringref))
		1038	ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)");
		1039
		1040	sv = newSVsv (AvARRAY (dec->stringref)[idx]);
		1041	}
		1042	break;
		1043
		1044	case CBOR_TAG_VALUE_SHAREABLE:
		1045	{
		1046	if (ecb_expect_false (!dec->shareable))
		1047	dec->shareable = (AV *)sv_2mortal ((SV *)newAV ());
		1048
		1049	if (dec->cbor.flags & F_ALLOW_CYCLES)
		1050	{
		1051	sv = newSV (0);
		1052	av_push (dec->shareable, SvREFCNT_inc_NN (sv));
		1053
		1054	SV *osv = decode_sv (dec);
		1055	sv_setsv (sv, 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	}
		1065	}
		1066	break;
		1067
		1068	case CBOR_TAG_VALUE_SHAREDREF:
		1069	{
		1070	if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT))
		1071	ERR ("corrupted CBOR data (sharedref index not an unsigned integer)");
		1072
		1073	UV idx = decode_uint (dec);
		1074
		1075	if (!dec->shareable || (int)idx > AvFILLp (dec->shareable))
		1076	ERR ("corrupted CBOR data (sharedref index out of bounds)");
		1077
		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");
		1082	}
		1083	break;
		1084
		1085	case CBOR_TAG_PERL_OBJECT:
		1086	{
		1087	if (dec->cbor.flags & F_FORBID_OBJECTS)
		1088	goto filter;
		1089
		1090	sv = decode_sv (dec);
		1091
718	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)	1092	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
719	ERR ("corrupted CBOR data (non-array perl object)");	1093	ERR ("corrupted CBOR data (non-array perl object)");
720		1094
721	AV *av = (AV *)SvRV (sv);	1095	AV *av = (AV *)SvRV (sv);
722	int len = av_len (av) + 1;	1096	int len = av_len (av) + 1;
723	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);	1097	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
724		1098
725	if (!stash)	1099	if (!stash)
726	ERR ("cannot decode perl-object (package does not exist)");	1100	ERR ("cannot decode perl-object (package does not exist)");
727		1101
728	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);	1102	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
729		1103
730	if (!method)	1104	if (!method)
731	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)");
732		1106
733	dSP;	1107	dSP;
734		1108
735	ENTER; SAVETMPS; PUSHMARK (SP);	1109	ENTER; SAVETMPS;
		1110	PUSHMARK (SP);
736	EXTEND (SP, len + 1);	1111	EXTEND (SP, len + 1);
737	// 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
738	PUSHs (*av_fetch (av, 0, 1));	1113	PUSHs (*av_fetch (av, 0, 1));
739	PUSHs (sv_cbor);	1114	PUSHs (sv_cbor);
740		1115
741	int i;	1116	int i;
742		1117
743	for (i = 1; i < len; ++i)	1118	for (i = 1; i < len; ++i)
744	PUSHs (*av_fetch (av, i, 1));	1119	PUSHs (*av_fetch (av, i, 1));
745		1120
746	PUTBACK;	1121	PUTBACK;
747	call_sv ((SV *)GvCV (method), G_SCALAR);	1122	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
748	SPAGAIN;	1123	SPAGAIN;
749		1124
		1125	if (SvTRUE (ERRSV))
		1126	{
		1127	FREETMPS; LEAVE;
		1128	ERR_ERRSV;
		1129	}
		1130
750	SvREFCNT_dec (sv);	1131	SvREFCNT_dec (sv);
751	sv = SvREFCNT_inc (POPs);	1132	sv = SvREFCNT_inc (POPs);
752		1133
753	PUTBACK;	1134	PUTBACK;
754		1135
755	FREETMPS; LEAVE;	1136	FREETMPS; LEAVE;
		1137	}
		1138	break;
756		1139
757	return sv;	1140	default:
758	}	1141	filter:
759	else	1142	{
760	{	1143	SV *tag_sv = newSVuv (tag);
		1144
		1145	sv = decode_sv (dec);
		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	{
761	AV *av = newAV ();	1174	AV *av = newAV ();
762	av_push (av, newSVuv (tag));	1175	av_push (av, tag_sv);
763	av_push (av, sv);	1176	av_push (av, sv);
764		1177
765	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	1178	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
766	? cbor_tagged_stash	1179	? cbor_tagged_stash
767	: gv_stashpv ("CBOR::XS::Tagged" , 1);	1180	: gv_stashpv ("CBOR::XS::Tagged" , 1);
768
769	return 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;
		1187	}
		1188	break;
770	}	1189	}
		1190
		1191	return sv;
771		1192
772	fail:	1193	fail:
773	SvREFCNT_dec (sv);	1194	SvREFCNT_dec (sv);
774	return &PL_sv_undef;	1195	return &PL_sv_undef;
775	}	1196	}
…		…
777	static SV *	1198	static SV *
778	decode_sv (dec_t *dec)	1199	decode_sv (dec_t *dec)
779	{	1200	{
780	WANT (1);	1201	WANT (1);
781		1202
782	switch (*dec->cur >> 5)	1203	switch (*dec->cur >> MAJOR_SHIFT)
783	{	1204	{
784	case 0: // unsigned int	1205	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
785	return newSVuv (decode_uint (dec));	1206	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
786	case 1: // negative int	1207	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
787	return newSViv (-1 - (IV)decode_uint (dec));	1208	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
788	case 2: // octet string	1209	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
789	return decode_str (dec, 0);	1210	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
790	case 3: // utf-8 string	1211	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
791	return decode_str (dec, 1);	1212
792	case 4: // array	1213	case MAJOR_MISC >> MAJOR_SHIFT:
793	return decode_av (dec);
794	case 5: // map
795	return decode_hv (dec);
796	case 6: // tag
797	return decode_tagged (dec);
798	case 7: // misc
799	switch (*dec->cur++ & 31)	1214	switch (*dec->cur++ & MINOR_MASK)
800	{	1215	{
801	case 20:	1216	case SIMPLE_FALSE:
802	#if CBOR_SLOW	1217	#if CBOR_SLOW
803	types_false = get_bool ("Types::Serialiser::false");	1218	types_false = get_bool ("Types::Serialiser::false");
804	#endif	1219	#endif
805	return newSVsv (types_false);	1220	return newSVsv (types_false);
806	case 21:	1221	case SIMPLE_TRUE:
807	#if CBOR_SLOW	1222	#if CBOR_SLOW
808	types_true = get_bool ("Types::Serialiser::true");	1223	types_true = get_bool ("Types::Serialiser::true");
809	#endif	1224	#endif
810	return newSVsv (types_true);	1225	return newSVsv (types_true);
811	case 22:	1226	case SIMPLE_NULL:
812	return newSVsv (&PL_sv_undef);	1227	return newSVsv (&PL_sv_undef);
813	case 23:	1228	case SIMPLE_UNDEF:
814	#if CBOR_SLOW	1229	#if CBOR_SLOW
815	types_error = get_bool ("Types::Serialiser::error");	1230	types_error = get_bool ("Types::Serialiser::error");
816	#endif	1231	#endif
817	return newSVsv (types_error);	1232	return newSVsv (types_error);
818		1233
819	case 25:	1234	case MISC_FLOAT16:
820	{	1235	{
821	WANT (2);	1236	WANT (2);
822		1237
823	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1238	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
824	dec->cur += 2;	1239	dec->cur += 2;
825		1240
826	return newSVnv (ecb_binary16_to_float (fp));	1241	return newSVnv (ecb_binary16_to_float (fp));
827	}	1242	}
828		1243
829	case 26:	1244	case MISC_FLOAT32:
830	{	1245	{
831	uint32_t fp;	1246	uint32_t fp;
832	WANT (4);	1247	WANT (4);
833	memcpy (&fp, dec->cur, 4);	1248	memcpy (&fp, dec->cur, 4);
834	dec->cur += 4;	1249	dec->cur += 4;
…		…
837	fp = ecb_bswap32 (fp);	1252	fp = ecb_bswap32 (fp);
838		1253
839	return newSVnv (ecb_binary32_to_float (fp));	1254	return newSVnv (ecb_binary32_to_float (fp));
840	}	1255	}
841		1256
842	case 27:	1257	case MISC_FLOAT64:
843	{	1258	{
844	uint64_t fp;	1259	uint64_t fp;
845	WANT (8);	1260	WANT (8);
846	memcpy (&fp, dec->cur, 8);	1261	memcpy (&fp, dec->cur, 8);
847	dec->cur += 8;	1262	dec->cur += 8;
…		…
850	fp = ecb_bswap64 (fp);	1265	fp = ecb_bswap64 (fp);
851		1266
852	return newSVnv (ecb_binary64_to_double (fp));	1267	return newSVnv (ecb_binary64_to_double (fp));
853	}	1268	}
854		1269
855	// 0..19 unassigned	1270	// 0..19 unassigned simple
856	// 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
857	default:	1274	default:
858	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1275	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
859	}	1276	}
860		1277
861	break;	1278	break;
862	}	1279	}
863		1280
…		…
866	}	1283	}
867		1284
868	static SV *	1285	static SV *
869	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1286	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
870	{	1287	{
871	dec_t dec;	1288	dec_t dec = { 0 };
872	SV *sv;	1289	SV *sv;
873	STRLEN len;	1290	STRLEN len;
874	char *data = SvPVbyte (string, len);	1291	char *data = SvPVbyte (string, len);
875		1292
876	if (len > cbor->max_size && cbor->max_size)	1293	if (len > cbor->max_size && cbor->max_size)
…		…
878	(unsigned long)len, (unsigned long)cbor->max_size);	1295	(unsigned long)len, (unsigned long)cbor->max_size);
879		1296
880	dec.cbor = *cbor;	1297	dec.cbor = *cbor;
881	dec.cur = (U8 *)data;	1298	dec.cur = (U8 *)data;
882	dec.end = (U8 *)data + len;	1299	dec.end = (U8 *)data + len;
883	dec.err = 0;
884	dec.depth = 0;
885		1300
886	sv = decode_sv (&dec);	1301	sv = decode_sv (&dec);
887		1302
888	if (offset_return)	1303	if (offset_return)
889	*offset_return = dec.cur;	1304	*offset_return = dec.cur;
…		…
892	if (dec.cur != dec.end && !dec.err)	1307	if (dec.cur != dec.end && !dec.err)
893	dec.err = "garbage after CBOR object";	1308	dec.err = "garbage after CBOR object";
894		1309
895	if (dec.err)	1310	if (dec.err)
896	{	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
897	SvREFCNT_dec (sv);	1323	SvREFCNT_dec (sv);
		1324
		1325	if (dec.err_sv)
		1326	sv_2mortal (dec.err_sv);
		1327
898	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);
899	}	1329	}
900		1330
901	sv = sv_2mortal (sv);	1331	sv = sv_2mortal (sv);
902		1332
903	return sv;	1333	return sv;
904	}	1334	}
905		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
906	/////////////////////////////////////////////////////////////////////////////	1460	/////////////////////////////////////////////////////////////////////////////
907	// XS interface functions	1461	// XS interface functions
908		1462
909	MODULE = CBOR::XS PACKAGE = CBOR::XS	1463	MODULE = CBOR::XS PACKAGE = CBOR::XS
910		1464
…		…
918		1472
919	types_true = get_bool ("Types::Serialiser::true" );	1473	types_true = get_bool ("Types::Serialiser::true" );
920	types_false = get_bool ("Types::Serialiser::false");	1474	types_false = get_bool ("Types::Serialiser::false");
921	types_error = get_bool ("Types::Serialiser::error");	1475	types_error = get_bool ("Types::Serialiser::error");
922		1476
		1477	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1478
923	sv_cbor = newSVpv ("CBOR", 0);	1479	sv_cbor = newSVpv ("CBOR", 0);
924	SvREADONLY_on (sv_cbor);	1480	SvREADONLY_on (sv_cbor);
		1481
		1482	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
925	}	1483	}
926		1484
927	PROTOTYPES: DISABLE	1485	PROTOTYPES: DISABLE
928		1486
929	void CLONE (...)	1487	void CLONE (...)
…		…
947		1505
948	void shrink (CBOR *self, int enable = 1)	1506	void shrink (CBOR *self, int enable = 1)
949	ALIAS:	1507	ALIAS:
950	shrink = F_SHRINK	1508	shrink = F_SHRINK
951	allow_unknown = F_ALLOW_UNKNOWN	1509	allow_unknown = F_ALLOW_UNKNOWN
		1510	allow_sharing = F_ALLOW_SHARING
		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
952	PPCODE:	1517	PPCODE:
953	{	1518	{
954	if (enable)	1519	if (enable)
955	self->flags |= ix;	1520	self->flags |= ix;
956	else	1521	else
…		…
961		1526
962	void get_shrink (CBOR *self)	1527	void get_shrink (CBOR *self)
963	ALIAS:	1528	ALIAS:
964	get_shrink = F_SHRINK	1529	get_shrink = F_SHRINK
965	get_allow_unknown = F_ALLOW_UNKNOWN	1530	get_allow_unknown = F_ALLOW_UNKNOWN
		1531	get_allow_sharing = F_ALLOW_SHARING
		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
966	PPCODE:	1538	PPCODE:
967	XPUSHs (boolSV (self->flags & ix));	1539	XPUSHs (boolSV (self->flags & ix));
968		1540
969	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1541	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
970	PPCODE:	1542	PPCODE:
…		…
983	XPUSHs (ST (0));	1555	XPUSHs (ST (0));
984		1556
985	int get_max_size (CBOR *self)	1557	int get_max_size (CBOR *self)
986	CODE:	1558	CODE:
987	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);
988	OUTPUT:	1572	OUTPUT:
989	RETVAL	1573	RETVAL
990		1574
991	void encode (CBOR *self, SV *scalar)	1575	void encode (CBOR *self, SV *scalar)
992	PPCODE:	1576	PPCODE:
…		…
1007	EXTEND (SP, 2);	1591	EXTEND (SP, 2);
1008	PUSHs (sv);	1592	PUSHs (sv);
1009	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1593	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
1010	}	1594	}
1011		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
1012	PROTOTYPES: ENABLE	1652	PROTOTYPES: ENABLE
1013		1653
1014	void encode_cbor (SV *scalar)	1654	void encode_cbor (SV *scalar)
		1655	ALIAS:
		1656	encode_cbor = 0
		1657	encode_cbor_sharing = F_ALLOW_SHARING
1015	PPCODE:	1658	PPCODE:
1016	{	1659	{
1017	CBOR cbor;	1660	CBOR cbor;
1018	cbor_init (&cbor);	1661	cbor_init (&cbor);
		1662	cbor.flags |= ix;
1019	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1663	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
1020	XPUSHs (scalar);	1664	XPUSHs (scalar);
1021	}	1665	}
1022		1666
1023	void decode_cbor (SV *cborstr)	1667	void decode_cbor (SV *cborstr)

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