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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.6 by root, Sat Oct 26 22:25:47 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
		16	// compatibility with perl <5.18
		17	#ifndef HvNAMELEN_get
		18	# define HvNAMELEN_get(hv) strlen (HvNAME (hv))
		19	#endif
		20	#ifndef HvNAMELEN
		21	# define HvNAMELEN(hv) HvNAMELEN_get (hv)
		22	#endif
		23	#ifndef HvNAMEUTF8
		24	# define HvNAMEUTF8(hv) 0
		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	};
		66
		67	// known tags
		68	enum cbor_tag
		69	{
		70	// extensions
		71	CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref
		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
		78
		79	// rfc7049
		80	CBOR_TAG_DATETIME = 0, // rfc4287, utf-8
		81	CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any
		82	CBOR_TAG_POS_BIGNUM = 2, // byte string
		83	CBOR_TAG_NEG_BIGNUM = 3, // byte string
		84	CBOR_TAG_DECIMAL = 4, // decimal fraction, array
		85	CBOR_TAG_BIGFLOAT = 5, // array
		86
		87	CBOR_TAG_CONV_B64U = 21, // base64url, any
		88	CBOR_TAG_CONV_B64 = 22, // base64, any
		89	CBOR_TAG_CONV_HEX = 23, // base16, any
		90	CBOR_TAG_CBOR = 24, // embedded cbor, byte string
		91
		92	CBOR_TAG_URI = 32, // URI rfc3986, utf-8
		93	CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8
		94	CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8
		95	CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8
		96	CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
		97
		98	CBOR_TAG_MAGIC = 55799, // self-describe cbor
		99	};
		100
14	#define F_SHRINK 0x00000200UL	101	#define F_SHRINK 0x00000001UL
15	#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
16		110
17	#define INIT_SIZE 32 // initial scalar size to be allocated	111	#define INIT_SIZE 32 // initial scalar size to be allocated
18		112
19	#define SB do {	113	#define SB do {
20	#define SE } while (0)	114	#define SE } while (0)
…		…
31	#else	125	#else
32	# define CBOR_SLOW 0	126	# define CBOR_SLOW 0
33	# define CBOR_STASH cbor_stash	127	# define CBOR_STASH cbor_stash
34	#endif	128	#endif
35		129
36	static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS::	130	static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS::
37	static SV *cbor_true, *cbor_false;	131	static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter;
38		132
39	typedef struct {	133	typedef struct {
40	U32 flags;	134	U32 flags;
41	U32 max_depth;	135	U32 max_depth;
42	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.
43	} CBOR;	143	} CBOR;
44		144
45	ecb_inline void	145	ecb_inline void
46	cbor_init (CBOR *cbor)	146	cbor_init (CBOR *cbor)
47	{	147	{
48	Zero (cbor, 1, CBOR);	148	Zero (cbor, 1, CBOR);
49	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);
50	}	157	}
51		158
52	/////////////////////////////////////////////////////////////////////////////	159	/////////////////////////////////////////////////////////////////////////////
53	// utility functions	160	// utility functions
54		161
…		…
76	SvPV_renew (sv, SvCUR (sv) + 1);	183	SvPV_renew (sv, SvCUR (sv) + 1);
77	#endif	184	#endif
78	}	185	}
79	}	186	}
80		187
81	/////////////////////////////////////////////////////////////////////////////	188	// minimum length of a string to be registered for stringref
82	// fp hell	189	ecb_inline int
83		190	minimum_string_length (UV idx)
84	//TODO	191	{
		192	return idx <= 23 ? 3
		193	: idx <= 0xffU ? 4
		194	: idx <= 0xffffU ? 5
		195	: idx <= 0xffffffffU ? 7
		196	: 11;
		197	}
85		198
86	/////////////////////////////////////////////////////////////////////////////	199	/////////////////////////////////////////////////////////////////////////////
87	// encoder	200	// encoder
88		201
89	// structure used for encoding CBOR	202	// structure used for encoding CBOR
…		…
92	char *cur; // SvPVX (sv) + current output position	205	char *cur; // SvPVX (sv) + current output position
93	char *end; // SvEND (sv)	206	char *end; // SvEND (sv)
94	SV *sv; // result scalar	207	SV *sv; // result scalar
95	CBOR cbor;	208	CBOR cbor;
96	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;
97	} enc_t;	214	} enc_t;
98		215
99	ecb_inline void	216	ecb_inline void
100	need (enc_t *enc, STRLEN len)	217	need (enc_t *enc, STRLEN len)
101	{	218	{
102	if (ecb_expect_false (enc->cur + len >= enc->end))	219	if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len))
103	{	220	{
104	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);	221	STRLEN cur = enc->cur - (char *)SvPVX (enc->sv);
105	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);	222	SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1);
106	enc->cur = SvPVX (enc->sv) + cur;	223	enc->cur = SvPVX (enc->sv) + cur;
107	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	224	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
…		…
118	static void	235	static void
119	encode_uint (enc_t *enc, int major, UV len)	236	encode_uint (enc_t *enc, int major, UV len)
120	{	237	{
121	need (enc, 9);	238	need (enc, 9);
122		239
123	if (len < 24)	240	if (ecb_expect_true (len < LENGTH_EXT1))
124	*enc->cur++ = major | len;	241	*enc->cur++ = major | len;
125	else if (len <= 0xff)	242	else if (ecb_expect_true (len <= 0xffU))
126	{	243	{
127	*enc->cur++ = major | 24;	244	*enc->cur++ = major | LENGTH_EXT1;
128	*enc->cur++ = len;	245	*enc->cur++ = len;
129	}	246	}
130	else if (len <= 0xffff)	247	else if (len <= 0xffffU)
131	{	248	{
132	*enc->cur++ = major | 25;	249	*enc->cur++ = major | LENGTH_EXT2;
133	*enc->cur++ = len >> 8;	250	*enc->cur++ = len >> 8;
134	*enc->cur++ = len;	251	*enc->cur++ = len;
135	}	252	}
136	else if (len <= 0xffffffff)	253	else if (len <= 0xffffffffU)
137	{	254	{
138	*enc->cur++ = major | 26;	255	*enc->cur++ = major | LENGTH_EXT4;
139	*enc->cur++ = len >> 24;	256	*enc->cur++ = len >> 24;
140	*enc->cur++ = len >> 16;	257	*enc->cur++ = len >> 16;
141	*enc->cur++ = len >> 8;	258	*enc->cur++ = len >> 8;
142	*enc->cur++ = len;	259	*enc->cur++ = len;
143	}	260	}
144	else	261	else
145	{	262	{
146	*enc->cur++ = major | 27;	263	*enc->cur++ = major | LENGTH_EXT8;
147	*enc->cur++ = len >> 56;	264	*enc->cur++ = len >> 56;
148	*enc->cur++ = len >> 48;	265	*enc->cur++ = len >> 48;
149	*enc->cur++ = len >> 40;	266	*enc->cur++ = len >> 40;
150	*enc->cur++ = len >> 32;	267	*enc->cur++ = len >> 32;
151	*enc->cur++ = len >> 24;	268	*enc->cur++ = len >> 24;
…		…
153	*enc->cur++ = len >> 8;	270	*enc->cur++ = len >> 8;
154	*enc->cur++ = len;	271	*enc->cur++ = len;
155	}	272	}
156	}	273	}
157		274
158	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
159	encode_str (enc_t *enc, int utf8, char *str, STRLEN len)	283	encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len)
160	{	284	{
161	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);
162	need (enc, len);	315	need (enc, len);
163	memcpy (enc->cur, str, len);	316	memcpy (enc->cur, str, len);
164	enc->cur += len;	317	enc->cur += len;
165	}	318	}
166		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
167	static void encode_sv (enc_t *enc, SV *sv);	345	static void encode_sv (enc_t *enc, SV *sv);
168		346
169	static void	347	static void
170	encode_av (enc_t *enc, AV *av)	348	encode_av (enc_t *enc, AV *av)
171	{	349	{
…		…
174	if (enc->depth >= enc->cbor.max_depth)	352	if (enc->depth >= enc->cbor.max_depth)
175	croak (ERR_NESTING_EXCEEDED);	353	croak (ERR_NESTING_EXCEEDED);
176		354
177	++enc->depth;	355	++enc->depth;
178		356
179	encode_uint (enc, 0x80, len + 1);	357	encode_uint (enc, MAJOR_ARRAY, len + 1);
180		358
		359	if (SvMAGICAL (av))
181	for (i = 0; i <= len; ++i)	360	for (i = 0; i <= len; ++i)
182	{	361	{
183	SV **svp = av_fetch (av, i, 0);	362	SV **svp = av_fetch (av, i, 0);
184	encode_sv (enc, svp ? *svp : &PL_sv_undef);	363	encode_sv (enc, svp ? *svp : &PL_sv_undef);
185	}	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	}
186		371
187	--enc->depth;	372	--enc->depth;
188	}	373	}
189		374
190	static void	375	static void
…		…
199		384
200	int pairs = hv_iterinit (hv);	385	int pairs = hv_iterinit (hv);
201	int mg = SvMAGICAL (hv);	386	int mg = SvMAGICAL (hv);
202		387
203	if (mg)	388	if (mg)
204	encode_ch (enc, 0xa0 | 31);	389	encode_ch (enc, MAJOR_MAP | MINOR_INDEF);
205	else	390	else
206	encode_uint (enc, 0xa0, pairs);	391	encode_uint (enc, MAJOR_MAP, pairs);
207		392
208	while ((he = hv_iternext (hv)))	393	while ((he = hv_iternext (hv)))
209	{	394	{
210	if (HeKLEN (he) == HEf_SVKEY)	395	if (HeKLEN (he) == HEf_SVKEY)
211	encode_sv (enc, HeSVKEY (he));	396	encode_sv (enc, HeSVKEY (he));
212	else	397	else
213	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));
214		399
215	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));
216	}	401	}
217		402
218	if (mg)	403	if (mg)
219	encode_ch (enc, 0xe0 | 31);	404	encode_ch (enc, MAJOR_MISC | MINOR_INDEF);
220		405
221	--enc->depth;	406	--enc->depth;
222	}	407	}
223		408
224	// encode objects, arrays and special \0=false and \1=true values.	409	// encode objects, arrays and special \0=false and \1=true values.
225	static void	410	static void
226	encode_rv (enc_t *enc, SV *sv)	411	encode_rv (enc_t *enc, SV *sv)
227	{	412	{
228	svtype svt;
229
230	SvGETMAGIC (sv);	413	SvGETMAGIC (sv);
		414
231	svt = SvTYPE (sv);	415	svtype svt = SvTYPE (sv);
232		416
233	if (ecb_expect_false (SvOBJECT (sv)))	417	if (ecb_expect_false (SvOBJECT (sv)))
234	{	418	{
235	HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash	419	HV *boolean_stash = !CBOR_SLOW || types_boolean_stash
236	? cbor_boolean_stash	420	? types_boolean_stash
237	: gv_stashpv ("CBOR::XS::Boolean", 1);	421	: gv_stashpv ("Types::Serialiser::Boolean", 1);
		422	HV *error_stash = !CBOR_SLOW || types_error_stash
		423	? types_error_stash
		424	: gv_stashpv ("Types::Serialiser::Error", 1);
238	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash	425	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
239	? cbor_tagged_stash	426	? cbor_tagged_stash
240	: gv_stashpv ("CBOR::XS::Tagged" , 1);	427	: gv_stashpv ("CBOR::XS::Tagged" , 1);
241		428
		429	HV *stash = SvSTASH (sv);
		430
242	if (SvSTASH (sv) == boolean_stash)	431	if (stash == boolean_stash)
243	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	}
		436	else if (stash == error_stash)
		437	{
		438	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
		439	return;
		440	}
244	else if (SvSTASH (sv) == tagged_stash)	441	else if (stash == tagged_stash)
245	{	442	{
246	if (svt != SVt_PVAV)	443	if (svt != SVt_PVAV)
247	croak ("encountered CBOR::XS::Tagged object that isn't an array");	444	croak ("encountered CBOR::XS::Tagged object that isn't an array");
248		445
249	encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1)));	446	encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
250	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))
		462	{
		463	encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF);
		464	encode_uint (enc, MAJOR_POS_INT, SvUV (*svp));
		465	return;
251	}	466	}
252	else	467	else
253	{	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))));
		483	else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0)))
		484	{
		485	dSP;
		486
		487	ENTER; SAVETMPS;
		488	PUSHMARK (SP);
254	// 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
255	GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0);
256
257	if (to_cbor)
258	{
259	dSP;
260
261	ENTER; SAVETMPS; PUSHMARK (SP);
262	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));	490	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
263		491
264	// calling with G_SCALAR ensures that we always get a 1 return value
265	PUTBACK;	492	PUTBACK;
		493	// G_SCALAR ensures that return value is 1
266	call_sv ((SV *)GvCV (to_cbor), G_SCALAR);	494	call_sv ((SV *)GvCV (method), G_SCALAR);
267	SPAGAIN;	495	SPAGAIN;
268		496
269	// catch this surprisingly common error	497	// catch this surprisingly common error
270	if (SvROK (TOPs) && SvRV (TOPs) == sv)	498	if (SvROK (TOPs) && SvRV (TOPs) == sv)
271	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));	499	croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash));
272		500
273	sv = POPs;	501	encode_sv (enc, POPs);
		502
274	PUTBACK;	503	PUTBACK;
275		504
276	encode_sv (enc, sv);
277
278	FREETMPS; LEAVE;	505	FREETMPS; LEAVE;
279	}	506	}
		507	else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0)
		508	{
		509	dSP;
		510
		511	ENTER; SAVETMPS;
		512	SAVESTACK_POS ();
		513	PUSHMARK (SP);
		514	EXTEND (SP, 2);
		515	// we re-bless the reference to get overload and other niceties right
		516	PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash));
		517	PUSHs (sv_cbor);
		518
		519	PUTBACK;
		520	int count = call_sv ((SV *)GvCV (method), G_ARRAY);
		521	SPAGAIN;
		522
		523	// catch this surprisingly common error
		524	if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv)
		525	croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash));
		526
		527	encode_tag (enc, CBOR_TAG_PERL_OBJECT);
		528	encode_uint (enc, MAJOR_ARRAY, count + 1);
		529	encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash));
		530
		531	while (count)
		532	encode_sv (enc, SP[1 - count--]);
		533
		534	PUTBACK;
		535
		536	FREETMPS; LEAVE;
		537	}
280	else	538	else
281	croak ("encountered object '%s', but no TO_CBOR method available on it",	539	croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it",
282	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	540	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
283	}
284	}	541	}
285	else if (svt == SVt_PVHV)	542	else if (svt == SVt_PVHV)
286	encode_hv (enc, (HV *)sv);	543	encode_hv (enc, (HV *)sv);
287	else if (svt == SVt_PVAV)	544	else if (svt == SVt_PVAV)
288	encode_av (enc, (AV *)sv);	545	encode_av (enc, (AV *)sv);
289	else if (svt < SVt_PVAV)
290	{
291	STRLEN len = 0;
292	char *pv = svt ? SvPV (sv, len) : 0;
293
294	if (len == 1 && *pv == '1')
295	encode_ch (enc, 0xe0 | 21);
296	else if (len == 1 && *pv == '0')
297	encode_ch (enc, 0xe0 | 20);
298	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
299	encode_ch (enc, 0xe0 | 23);
300	else
301	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
302	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
303	}
304	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
305	encode_ch (enc, 0xe0 | 23);
306	else	546	else
307	croak ("encountered %s, but CBOR can only represent references to arrays or hashes",	547	{
308	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	548	encode_tag (enc, CBOR_TAG_INDIRECTION);
		549	encode_sv (enc, sv);
		550	}
309	}	551	}
310		552
311	static void	553	static void
312	encode_nv (enc_t *enc, SV *sv)	554	encode_nv (enc_t *enc, SV *sv)
313	{	555	{
314	double nv = SvNVX (sv);	556	double nv = SvNVX (sv);
315		557
316	need (enc, 9);	558	need (enc, 9);
317		559
318	if (ecb_expect_false (nv == (U32)nv))	560	if (ecb_expect_false (nv == (NV)(U32)nv))
319	encode_uint (enc, 0x00, (U32)nv);	561	encode_uint (enc, MAJOR_POS_INT, (U32)nv);
320	//TODO: maybe I32?	562	//TODO: maybe I32?
321	else if (ecb_expect_false (nv == (float)nv))	563	else if (ecb_expect_false (nv == (float)nv))
322	{	564	{
323	uint32_t fp = ecb_float_to_binary32 (nv);	565	uint32_t fp = ecb_float_to_binary32 (nv);
324		566
325	*enc->cur++ = 0xe0 | 26;	567	*enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
326		568
327	if (!ecb_big_endian ())	569	if (!ecb_big_endian ())
328	fp = ecb_bswap32 (fp);	570	fp = ecb_bswap32 (fp);
329		571
330	memcpy (enc->cur, &fp, 4);	572	memcpy (enc->cur, &fp, 4);
…		…
332	}	574	}
333	else	575	else
334	{	576	{
335	uint64_t fp = ecb_double_to_binary64 (nv);	577	uint64_t fp = ecb_double_to_binary64 (nv);
336		578
337	*enc->cur++ = 0xe0 | 27;	579	*enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
338		580
339	if (!ecb_big_endian ())	581	if (!ecb_big_endian ())
340	fp = ecb_bswap64 (fp);	582	fp = ecb_bswap64 (fp);
341		583
342	memcpy (enc->cur, &fp, 8);	584	memcpy (enc->cur, &fp, 8);
…		…
351		593
352	if (SvPOKp (sv))	594	if (SvPOKp (sv))
353	{	595	{
354	STRLEN len;	596	STRLEN len;
355	char *str = SvPV (sv, len);	597	char *str = SvPV (sv, len);
356	encode_str (enc, SvUTF8 (sv), str, len);	598	encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
357	}	599	}
358	else if (SvNOKp (sv))	600	else if (SvNOKp (sv))
359	encode_nv (enc, sv);	601	encode_nv (enc, sv);
360	else if (SvIOKp (sv))	602	else if (SvIOKp (sv))
361	{	603	{
362	if (SvIsUV (sv))	604	if (SvIsUV (sv))
363	encode_uint (enc, 0x00, SvUVX (sv));	605	encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
364	else if (SvIVX (sv) >= 0)	606	else if (SvIVX (sv) >= 0)
365	encode_uint (enc, 0x00, SvIVX (sv));	607	encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
366	else	608	else
367	encode_uint (enc, 0x20, -(SvIVX (sv) + 1));	609	encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
368	}	610	}
369	else if (SvROK (sv))	611	else if (SvROK (sv))
370	encode_rv (enc, SvRV (sv));	612	encode_rv (enc, SvRV (sv));
371	else if (!SvOK (sv))	613	else if (!SvOK (sv))
372	encode_ch (enc, 0xe0 | 22);	614	encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
373	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)	615	else if (enc->cbor.flags & F_ALLOW_UNKNOWN)
374	encode_ch (enc, 0xe0 | 23);	616	encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF);
375	else	617	else
376	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",
377	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));	619	SvPV_nolen (sv), (unsigned int)SvFLAGS (sv));
378	}	620	}
379		621
380	static SV *	622	static SV *
381	encode_cbor (SV *scalar, CBOR *cbor)	623	encode_cbor (SV *scalar, CBOR *cbor)
382	{	624	{
383	enc_t enc;	625	enc_t enc = { 0 };
384		626
385	enc.cbor = *cbor;	627	enc.cbor = *cbor;
386	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	628	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
387	enc.cur = SvPVX (enc.sv);	629	enc.cur = SvPVX (enc.sv);
388	enc.end = SvEND (enc.sv);	630	enc.end = SvEND (enc.sv);
389	enc.depth = 0;
390		631
391	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
392	encode_sv (&enc, scalar);	641	encode_sv (&enc, scalar);
393		642
394	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	643	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
395	*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
396		645
…		…
410	U8 *end; // end of input string	659	U8 *end; // end of input string
411	const char *err; // parse error, if != 0	660	const char *err; // parse error, if != 0
412	CBOR cbor;	661	CBOR cbor;
413	U32 depth; // recursion depth	662	U32 depth; // recursion depth
414	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
415	} dec_t;	668	} dec_t;
416		669
417	#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);
418		677
419	#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;
420		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
421	#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)
422	#define DEC_DEC_DEPTH --dec->depth	713	#define DEC_DEC_DEPTH --dec->depth
423		714
424	static UV	715	static UV
425	decode_uint (dec_t *dec)	716	decode_uint (dec_t *dec)
426	{	717	{
427	switch (*dec->cur & 31)	718	U8 m = *dec->cur & MINOR_MASK;
428	{	719	++dec->cur;
429	case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
430	case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
431	case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23:
432	return *dec->cur++ & 31;
433		720
434	case 24:	721	if (ecb_expect_true (m < LENGTH_EXT1))
		722	return m;
		723	else if (ecb_expect_true (m == LENGTH_EXT1))
		724	{
435	WANT (2);	725	WANT (1);
436	dec->cur += 2;	726	dec->cur += 1;
437	return dec->cur[-1];	727	return dec->cur[-1];
438		728	}
439	case 25:	729	else if (ecb_expect_true (m == LENGTH_EXT2))
		730	{
440	WANT (3);	731	WANT (2);
441	dec->cur += 3;	732	dec->cur += 2;
442	return (((UV)dec->cur[-2]) << 8)	733	return (((UV)dec->cur[-2]) << 8)
443	| ((UV)dec->cur[-1]);	734	| ((UV)dec->cur[-1]);
444		735	}
445	case 26:	736	else if (ecb_expect_true (m == LENGTH_EXT4))
		737	{
446	WANT (5);	738	WANT (4);
447	dec->cur += 5;	739	dec->cur += 4;
448	return (((UV)dec->cur[-4]) << 24)	740	return (((UV)dec->cur[-4]) << 24)
449	| (((UV)dec->cur[-3]) << 16)	741	| (((UV)dec->cur[-3]) << 16)
450	| (((UV)dec->cur[-2]) << 8)	742	| (((UV)dec->cur[-2]) << 8)
451	| ((UV)dec->cur[-1]);	743	| ((UV)dec->cur[-1]);
452		744	}
453	case 27:	745	else if (ecb_expect_true (m == LENGTH_EXT8))
		746	{
454	WANT (9);	747	WANT (8);
455	dec->cur += 9;	748	dec->cur += 8;
		749
		750	return
		751	#if UVSIZE < 8
		752	0
		753	#else
456	return (((UV)dec->cur[-8]) << 56)	754	(((UV)dec->cur[-8]) << 56)
457	| (((UV)dec->cur[-7]) << 48)	755	| (((UV)dec->cur[-7]) << 48)
458	| (((UV)dec->cur[-6]) << 40)	756	| (((UV)dec->cur[-6]) << 40)
459	| (((UV)dec->cur[-5]) << 32)	757	| (((UV)dec->cur[-5]) << 32)
		758	#endif
460	| (((UV)dec->cur[-4]) << 24)	759	| (((UV)dec->cur[-4]) << 24)
461	| (((UV)dec->cur[-3]) << 16)	760	| (((UV)dec->cur[-3]) << 16)
462	| (((UV)dec->cur[-2]) << 8)	761	| (((UV)dec->cur[-2]) << 8)
463	| ((UV)dec->cur[-1]);	762	| ((UV)dec->cur[-1]);
464		763	}
465	default:	764	else
466	ERR ("corrupted CBOR data (unsupported integer minor encoding)");	765	ERR ("corrupted CBOR data (unsupported integer minor encoding)");
467	}
468		766
469	fail:	767	fail:
470	return 0;	768	return 0;
471	}	769	}
472		770
…		…
477	{	775	{
478	AV *av = newAV ();	776	AV *av = newAV ();
479		777
480	DEC_INC_DEPTH;	778	DEC_INC_DEPTH;
481		779
482	if ((*dec->cur & 31) == 31)	780	if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF))
483	{	781	{
484	++dec->cur;	782	++dec->cur;
485		783
486	for (;;)	784	for (;;)
487	{	785	{
488	WANT (1);	786	WANT (1);
489		787
490	if (*dec->cur == (0xe0 | 31))	788	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
491	{	789	{
492	++dec->cur;	790	++dec->cur;
493	break;	791	break;
494	}	792	}
495		793
496	av_push (av, decode_sv (dec));	794	av_push (av, decode_sv (dec));
497	}	795	}
498	}	796	}
499	else	797	else
500	{	798	{
501	int i, len = decode_uint (dec);	799	UV i, len = decode_uint (dec);
502		800
		801	WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays
503	av_fill (av, len - 1);	802	av_fill (av, len - 1);
504		803
505	for (i = 0; i < len; ++i)	804	for (i = 0; i < len; ++i)
506	AvARRAY (av)[i] = decode_sv (dec);	805	AvARRAY (av)[i] = decode_sv (dec);
507	}	806	}
…		…
513	SvREFCNT_dec (av);	812	SvREFCNT_dec (av);
514	DEC_DEC_DEPTH;	813	DEC_DEC_DEPTH;
515	return &PL_sv_undef;	814	return &PL_sv_undef;
516	}	815	}
517		816
		817	static void
		818	decode_he (dec_t *dec, HV *hv)
		819	{
		820	// for speed reasons, we specialcase single-string
		821	// byte or utf-8 strings as keys, but only when !stringref
		822
		823	if (ecb_expect_true (!dec->stringref))
		824	if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8))
		825	{
		826	STRLEN len = decode_uint (dec);
		827	char *key = (char *)dec->cur;
		828
		829	WANT (len);
		830	dec->cur += len;
		831
		832	hv_store (hv, key, len, decode_sv (dec), 0);
		833
		834	return;
		835	}
		836	else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8))
		837	{
		838	STRLEN len = decode_uint (dec);
		839	char *key = (char *)dec->cur;
		840
		841	WANT (len);
		842	dec->cur += len;
		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
		848	hv_store (hv, key, -len, decode_sv (dec), 0);
		849
		850	return;
		851	}
		852
		853	SV *k = decode_sv (dec);
		854	SV *v = decode_sv (dec);
		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
		884	hv_store_ent (hv, k, v, 0);
		885	SvREFCNT_dec (k);
		886
		887	fail:
		888	;
		889	}
		890
518	static SV *	891	static SV *
519	decode_hv (dec_t *dec)	892	decode_hv (dec_t *dec)
520	{	893	{
521	HV *hv = newHV ();	894	HV *hv = newHV ();
522		895
523	DEC_INC_DEPTH;	896	DEC_INC_DEPTH;
524		897
525	if ((*dec->cur & 31) == 31)	898	if (*dec->cur == (MAJOR_MAP | MINOR_INDEF))
526	{	899	{
527	++dec->cur;	900	++dec->cur;
528		901
529	for (;;)	902	for (;;)
530	{	903	{
531	WANT (1);	904	WANT (1);
532		905
533	if (*dec->cur == (0xe0 | 31))	906	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
534	{	907	{
535	++dec->cur;	908	++dec->cur;
536	break;	909	break;
537	}	910	}
538		911
539	SV *k = decode_sv (dec);	912	decode_he (dec, hv);
540	SV *v = decode_sv (dec);
541
542	hv_store_ent (hv, k, v, 0);
543	}	913	}
544	}	914	}
545	else	915	else
546	{	916	{
547	int len = decode_uint (dec);	917	UV pairs = decode_uint (dec);
548		918
		919	WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes
		920
549	while (len--)	921	while (pairs--)
550	{	922	decode_he (dec, hv);
551	SV *k = decode_sv (dec);
552	SV *v = decode_sv (dec);
553
554	hv_store_ent (hv, k, v, 0);
555	}
556	}	923	}
557		924
558	DEC_DEC_DEPTH;	925	DEC_DEC_DEPTH;
559	return newRV_noinc ((SV *)hv);	926	return newRV_noinc ((SV *)hv);
560		927
…		…
567	static SV *	934	static SV *
568	decode_str (dec_t *dec, int utf8)	935	decode_str (dec_t *dec, int utf8)
569	{	936	{
570	SV *sv = 0;	937	SV *sv = 0;
571		938
572	if ((*dec->cur & 31) == 31)	939	if ((*dec->cur & MINOR_MASK) == MINOR_INDEF)
573	{	940	{
		941	// indefinite length strings
574	++dec->cur;	942	++dec->cur;
575		943
		944	U8 major = *dec->cur & MAJOR_MISC;
		945
576	sv = newSVpvn ("", 0);	946	sv = newSVpvn ("", 0);
577		947
578	// not very fast, and certainly not robust against illegal input
579	for (;;)	948	for (;;)
580	{	949	{
581	WANT (1);	950	WANT (1);
582		951
583	if (*dec->cur == (0xe0 | 31))	952	if ((*dec->cur - major) > LENGTH_EXT8)
		953	if (*dec->cur == (MAJOR_MISC | MINOR_INDEF))
584	{	954	{
585	++dec->cur;	955	++dec->cur;
586	break;	956	break;
587	}	957	}
		958	else
		959	ERR ("corrupted CBOR data (invalid chunks in indefinite length string)");
588		960
589	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;
590	}	966	}
591	}	967	}
592	else	968	else
593	{	969	{
594	STRLEN len = decode_uint (dec);	970	STRLEN len = decode_uint (dec);
595		971
596	WANT (len);	972	WANT (len);
597	sv = newSVpvn (dec->cur, len);	973	sv = newSVpvn (dec->cur, len);
598	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));
599	}	979	}
600		980
601	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
602	SvUTF8_on (sv);	987	SvUTF8_on (sv);
		988	}
603		989
604	return sv;	990	return sv;
605		991
606	fail:	992	fail:
607	SvREFCNT_dec (sv);	993	SvREFCNT_dec (sv);
…		…
609	}	995	}
610		996
611	static SV *	997	static SV *
612	decode_tagged (dec_t *dec)	998	decode_tagged (dec_t *dec)
613	{	999	{
		1000	SV *sv = 0;
614	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:
615	SV *sv = decode_sv (dec);	1008	sv = decode_sv (dec);
		1009	break;
616		1010
617	if (tag == 55799) // 2.4.5 Self-Describe CBOR	1011	case CBOR_TAG_INDIRECTION:
		1012	sv = newRV_noinc (decode_sv (dec));
		1013	break;
		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
		1092	if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV)
		1093	ERR ("corrupted CBOR data (non-array perl object)");
		1094
		1095	AV *av = (AV *)SvRV (sv);
		1096	int len = av_len (av) + 1;
		1097	HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0);
		1098
		1099	if (!stash)
		1100	ERR ("cannot decode perl-object (package does not exist)");
		1101
		1102	GV *method = gv_fetchmethod_autoload (stash, "THAW", 0);
		1103
		1104	if (!method)
		1105	ERR ("cannot decode perl-object (package does not have a THAW method)");
		1106
		1107	dSP;
		1108
		1109	ENTER; SAVETMPS;
		1110	PUSHMARK (SP);
		1111	EXTEND (SP, len + 1);
		1112	// we re-bless the reference to get overload and other niceties right
		1113	PUSHs (*av_fetch (av, 0, 1));
		1114	PUSHs (sv_cbor);
		1115
		1116	int i;
		1117
		1118	for (i = 1; i < len; ++i)
		1119	PUSHs (*av_fetch (av, i, 1));
		1120
		1121	PUTBACK;
		1122	call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL);
		1123	SPAGAIN;
		1124
		1125	if (SvTRUE (ERRSV))
		1126	{
		1127	FREETMPS; LEAVE;
		1128	ERR_ERRSV;
		1129	}
		1130
		1131	SvREFCNT_dec (sv);
		1132	sv = SvREFCNT_inc (POPs);
		1133
		1134	PUTBACK;
		1135
		1136	FREETMPS; LEAVE;
		1137	}
		1138	break;
		1139
		1140	default:
		1141	filter:
		1142	{
		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	{
		1174	AV *av = newAV ();
		1175	av_push (av, tag_sv);
		1176	av_push (av, sv);
		1177
		1178	HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash
		1179	? cbor_tagged_stash
		1180	: gv_stashpv ("CBOR::XS::Tagged" , 1);
		1181	sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash);
		1182	}
		1183
		1184	PUTBACK;
		1185
		1186	FREETMPS; LEAVE;
		1187	}
		1188	break;
		1189	}
		1190
618	return sv;	1191	return sv;
619		1192
620	AV *av = newAV ();	1193	fail:
621	av_push (av, newSVuv (tag));	1194	SvREFCNT_dec (sv);
622	av_push (av, sv);	1195	return &PL_sv_undef;
623	return newRV_noinc ((SV *)av);
624	}	1196	}
625		1197
626	static SV *	1198	static SV *
627	decode_sv (dec_t *dec)	1199	decode_sv (dec_t *dec)
628	{	1200	{
629	WANT (1);	1201	WANT (1);
630		1202
631	switch (*dec->cur >> 5)	1203	switch (*dec->cur >> MAJOR_SHIFT)
632	{	1204	{
633	case 0: // unsigned int	1205	case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec));
634	return newSVuv (decode_uint (dec));	1206	case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec));
635	case 1: // negative int	1207	case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0);
636	return newSViv (-1 - (IV)decode_uint (dec));	1208	case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1);
637	case 2: // octet string	1209	case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec);
638	return decode_str (dec, 0);	1210	case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec);
639	case 3: // utf-8 string	1211	case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec);
640	return decode_str (dec, 1);	1212
641	case 4: // array	1213	case MAJOR_MISC >> MAJOR_SHIFT:
642	return decode_av (dec);
643	case 5: // map
644	return decode_hv (dec);
645	case 6: // tag
646	return decode_tagged (dec);
647	case 7: // misc
648	switch (*dec->cur++ & 31)	1214	switch (*dec->cur++ & MINOR_MASK)
649	{	1215	{
650	case 20:	1216	case SIMPLE_FALSE:
651	#if CBOR_SLOW	1217	#if CBOR_SLOW
652	cbor_false = get_bool ("CBOR::XS::false");	1218	types_false = get_bool ("Types::Serialiser::false");
653	#endif	1219	#endif
654	return newSVsv (cbor_false);	1220	return newSVsv (types_false);
655	case 21:	1221	case SIMPLE_TRUE:
656	#if CBOR_SLOW	1222	#if CBOR_SLOW
657	cbor_true = get_bool ("CBOR::XS::true");	1223	types_true = get_bool ("Types::Serialiser::true");
658	#endif	1224	#endif
659	return newSVsv (cbor_true);	1225	return newSVsv (types_true);
660	case 22:	1226	case SIMPLE_NULL:
661	return newSVsv (&PL_sv_undef);	1227	return newSVsv (&PL_sv_undef);
		1228	case SIMPLE_UNDEF:
		1229	#if CBOR_SLOW
		1230	types_error = get_bool ("Types::Serialiser::error");
		1231	#endif
		1232	return newSVsv (types_error);
662		1233
663	case 25:	1234	case MISC_FLOAT16:
664	{	1235	{
665	WANT (2);	1236	WANT (2);
666		1237
667	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];	1238	uint16_t fp = (dec->cur[0] << 8) | dec->cur[1];
668	dec->cur += 2;	1239	dec->cur += 2;
669		1240
670	return newSVnv (ecb_binary16_to_float (fp));	1241	return newSVnv (ecb_binary16_to_float (fp));
671	}	1242	}
672		1243
673	case 26:	1244	case MISC_FLOAT32:
674	{	1245	{
675	uint32_t fp;	1246	uint32_t fp;
676	WANT (4);	1247	WANT (4);
677	memcpy (&fp, dec->cur, 4);	1248	memcpy (&fp, dec->cur, 4);
678	dec->cur += 4;	1249	dec->cur += 4;
…		…
681	fp = ecb_bswap32 (fp);	1252	fp = ecb_bswap32 (fp);
682		1253
683	return newSVnv (ecb_binary32_to_float (fp));	1254	return newSVnv (ecb_binary32_to_float (fp));
684	}	1255	}
685		1256
686	case 27:	1257	case MISC_FLOAT64:
687	{	1258	{
688	uint64_t fp;	1259	uint64_t fp;
689	WANT (8);	1260	WANT (8);
690	memcpy (&fp, dec->cur, 8);	1261	memcpy (&fp, dec->cur, 8);
691	dec->cur += 8;	1262	dec->cur += 8;
…		…
694	fp = ecb_bswap64 (fp);	1265	fp = ecb_bswap64 (fp);
695		1266
696	return newSVnv (ecb_binary64_to_double (fp));	1267	return newSVnv (ecb_binary64_to_double (fp));
697	}	1268	}
698		1269
699	// 0..19 unassigned	1270	// 0..19 unassigned simple
700	// 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
701	default:	1274	default:
702	ERR ("corrupted CBOR data (reserved/unassigned major 7 value)");	1275	ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)");
703	}	1276	}
704		1277
705	break;	1278	break;
706	}	1279	}
707		1280
…		…
710	}	1283	}
711		1284
712	static SV *	1285	static SV *
713	decode_cbor (SV *string, CBOR *cbor, char **offset_return)	1286	decode_cbor (SV *string, CBOR *cbor, char **offset_return)
714	{	1287	{
715	dec_t dec;	1288	dec_t dec = { 0 };
716	SV *sv;	1289	SV *sv;
		1290	STRLEN len;
		1291	char *data = SvPVbyte (string, len);
717		1292
718	/* work around bugs in 5.10 where manipulating magic values
719	* makes perl ignore the magic in subsequent accesses.
720	* also make a copy of non-PV values, to get them into a clean
721	* state (SvPV should do that, but it's buggy, see below).
722	*/
723	/*SvGETMAGIC (string);*/
724	if (SvMAGICAL (string) || !SvPOK (string))
725	string = sv_2mortal (newSVsv (string));
726
727	SvUPGRADE (string, SVt_PV);
728
729	/* work around a bug in perl 5.10, which causes SvCUR to fail an
730	* assertion with -DDEBUGGING, although SvCUR is documented to
731	* return the xpv_cur field which certainly exists after upgrading.
732	* according to nicholas clark, calling SvPOK fixes this.
733	* But it doesn't fix it, so try another workaround, call SvPV_nolen
734	* and hope for the best.
735	* Damnit, SvPV_nolen still trips over yet another assertion. This
736	* assertion business is seriously broken, try yet another workaround
737	* for the broken -DDEBUGGING.
738	*/
739	{
740	#ifdef DEBUGGING
741	STRLEN offset = SvOK (string) ? sv_len (string) : 0;
742	#else
743	STRLEN offset = SvCUR (string);
744	#endif
745
746	if (offset > cbor->max_size && cbor->max_size)	1293	if (len > cbor->max_size && cbor->max_size)
747	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",	1294	croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu",
748	(unsigned long)SvCUR (string), (unsigned long)cbor->max_size);	1295	(unsigned long)len, (unsigned long)cbor->max_size);
749	}
750
751	sv_utf8_downgrade (string, 0);
752		1296
753	dec.cbor = *cbor;	1297	dec.cbor = *cbor;
754	dec.cur = (U8 *)SvPVX (string);	1298	dec.cur = (U8 *)data;
755	dec.end = (U8 *)SvEND (string);	1299	dec.end = (U8 *)data + len;
756	dec.err = 0;
757	dec.depth = 0;
758		1300
759	sv = decode_sv (&dec);	1301	sv = decode_sv (&dec);
760		1302
761	if (offset_return)	1303	if (offset_return)
762	*offset_return = dec.cur;	1304	*offset_return = dec.cur;
…		…
765	if (dec.cur != dec.end && !dec.err)	1307	if (dec.cur != dec.end && !dec.err)
766	dec.err = "garbage after CBOR object";	1308	dec.err = "garbage after CBOR object";
767		1309
768	if (dec.err)	1310	if (dec.err)
769	{	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
770	SvREFCNT_dec (sv);	1323	SvREFCNT_dec (sv);
		1324
		1325	if (dec.err_sv)
		1326	sv_2mortal (dec.err_sv);
		1327
771	croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (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);
772	}	1329	}
773		1330
774	sv = sv_2mortal (sv);	1331	sv = sv_2mortal (sv);
775		1332
776	return sv;	1333	return sv;
777	}	1334	}
778		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
779	/////////////////////////////////////////////////////////////////////////////	1460	/////////////////////////////////////////////////////////////////////////////
780	// XS interface functions	1461	// XS interface functions
781		1462
782	MODULE = CBOR::XS PACKAGE = CBOR::XS	1463	MODULE = CBOR::XS PACKAGE = CBOR::XS
783		1464
784	BOOT:	1465	BOOT:
785	{	1466	{
786	cbor_stash = gv_stashpv ("CBOR::XS" , 1);	1467	cbor_stash = gv_stashpv ("CBOR::XS" , 1);
787	cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1);
788	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);	1468	cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1);
789		1469
790	cbor_true = get_bool ("CBOR::XS::true");	1470	types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1);
791	cbor_false = get_bool ("CBOR::XS::false");	1471	types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1);
		1472
		1473	types_true = get_bool ("Types::Serialiser::true" );
		1474	types_false = get_bool ("Types::Serialiser::false");
		1475	types_error = get_bool ("Types::Serialiser::error");
		1476
		1477	default_filter = newSVpv ("CBOR::XS::default_filter", 0);
		1478
		1479	sv_cbor = newSVpv ("CBOR", 0);
		1480	SvREADONLY_on (sv_cbor);
		1481
		1482	assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1));
792	}	1483	}
793		1484
794	PROTOTYPES: DISABLE	1485	PROTOTYPES: DISABLE
795		1486
796	void CLONE (...)	1487	void CLONE (...)
797	CODE:	1488	CODE:
798	cbor_stash = 0;	1489	cbor_stash = 0;
799	cbor_boolean_stash = 0;
800	cbor_tagged_stash = 0;	1490	cbor_tagged_stash = 0;
		1491	types_error_stash = 0;
		1492	types_boolean_stash = 0;
801		1493
802	void new (char *klass)	1494	void new (char *klass)
803	PPCODE:	1495	PPCODE:
804	{	1496	{
805	SV *pv = NEWSV (0, sizeof (CBOR));	1497	SV *pv = NEWSV (0, sizeof (CBOR));
…		…
813		1505
814	void shrink (CBOR *self, int enable = 1)	1506	void shrink (CBOR *self, int enable = 1)
815	ALIAS:	1507	ALIAS:
816	shrink = F_SHRINK	1508	shrink = F_SHRINK
817	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
818	PPCODE:	1517	PPCODE:
819	{	1518	{
820	if (enable)	1519	if (enable)
821	self->flags |= ix;	1520	self->flags |= ix;
822	else	1521	else
…		…
827		1526
828	void get_shrink (CBOR *self)	1527	void get_shrink (CBOR *self)
829	ALIAS:	1528	ALIAS:
830	get_shrink = F_SHRINK	1529	get_shrink = F_SHRINK
831	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
832	PPCODE:	1538	PPCODE:
833	XPUSHs (boolSV (self->flags & ix));	1539	XPUSHs (boolSV (self->flags & ix));
834		1540
835	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)	1541	void max_depth (CBOR *self, U32 max_depth = 0x80000000UL)
836	PPCODE:	1542	PPCODE:
…		…
852	CODE:	1558	CODE:
853	RETVAL = self->max_size;	1559	RETVAL = self->max_size;
854	OUTPUT:	1560	OUTPUT:
855	RETVAL	1561	RETVAL
856		1562
857	#if 0 //TODO	1563	void filter (CBOR *self, SV *filter = 0)
858
859	void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef)
860	PPCODE:	1564	PPCODE:
861	{
862	SvREFCNT_dec (self->cb_object);	1565	SvREFCNT_dec (self->filter);
863	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;	1566	self->filter = filter ? newSVsv (filter) : filter;
864
865	XPUSHs (ST (0));	1567	XPUSHs (ST (0));
866	}
867		1568
868	void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef)	1569	SV *get_filter (CBOR *self)
869	PPCODE:	1570	CODE:
870	{	1571	RETVAL = self->filter ? self->filter : NEWSV (0, 0);
871	if (!self->cb_sk_object)	1572	OUTPUT:
872	self->cb_sk_object = newHV ();	1573	RETVAL
873
874	if (SvOK (cb))
875	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
876	else
877	{
878	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
879
880	if (!HvKEYS (self->cb_sk_object))
881	{
882	SvREFCNT_dec (self->cb_sk_object);
883	self->cb_sk_object = 0;
884	}
885	}
886
887	XPUSHs (ST (0));
888	}
889
890	#endif
891		1574
892	void encode (CBOR *self, SV *scalar)	1575	void encode (CBOR *self, SV *scalar)
893	PPCODE:	1576	PPCODE:
894	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;	1577	PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN;
895	XPUSHs (scalar);	1578	XPUSHs (scalar);
…		…
908	EXTEND (SP, 2);	1591	EXTEND (SP, 2);
909	PUSHs (sv);	1592	PUSHs (sv);
910	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));	1593	PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr))));
911	}	1594	}
912		1595
913	#if 0	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	}
914		1647
915	void DESTROY (CBOR *self)	1648	void DESTROY (CBOR *self)
916	CODE:	1649	PPCODE:
917	SvREFCNT_dec (self->cb_sk_object);	1650	cbor_free (self);
918	SvREFCNT_dec (self->cb_object);
919
920	#endif
921		1651
922	PROTOTYPES: ENABLE	1652	PROTOTYPES: ENABLE
923		1653
924	void encode_cbor (SV *scalar)	1654	void encode_cbor (SV *scalar)
		1655	ALIAS:
		1656	encode_cbor = 0
		1657	encode_cbor_sharing = F_ALLOW_SHARING
925	PPCODE:	1658	PPCODE:
926	{	1659	{
927	CBOR cbor;	1660	CBOR cbor;
928	cbor_init (&cbor);	1661	cbor_init (&cbor);
		1662	cbor.flags |= ix;
929	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;	1663	PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN;
930	XPUSHs (scalar);	1664	XPUSHs (scalar);
931	}	1665	}
932		1666
933	void decode_cbor (SV *cborstr)	1667	void decode_cbor (SV *cborstr)

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