[ViewVC] Diff of: cvs/JSON-XS/XS.xs

Comparing JSON-XS/XS.xs (file contents):
Revision 1.23 by root, Tue Apr 3 23:34:17 2007 UTC vs.
Revision 1.47 by root, Sun Jul 1 14:08:03 2007 UTC

…		…
3	#include "XSUB.h"	3	#include "XSUB.h"
4		4
5	#include "assert.h"	5	#include "assert.h"
6	#include "string.h"	6	#include "string.h"
7	#include "stdlib.h"	7	#include "stdlib.h"
		8	#include "stdio.h"
8		9
		10	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
		11	# define snprintf _snprintf // C compilers have this in stdio.h
		12	#endif
		13
		14	// some old perls do not have this, try to make it work, no
		15	// guarentees, though. if it breaks, you get to keep the pieces.
		16	#ifndef UTF8_MAXBYTES
		17	# define UTF8_MAXBYTES 13
		18	#endif
		19
9	#define F_ASCII 0x00000001UL	20	#define F_ASCII 0x00000001UL
		21	#define F_LATIN1 0x00000002UL
10	#define F_UTF8 0x00000002UL	22	#define F_UTF8 0x00000004UL
11	#define F_INDENT 0x00000004UL	23	#define F_INDENT 0x00000008UL
12	#define F_CANONICAL 0x00000008UL	24	#define F_CANONICAL 0x00000010UL
13	#define F_SPACE_BEFORE 0x00000010UL	25	#define F_SPACE_BEFORE 0x00000020UL
14	#define F_SPACE_AFTER 0x00000020UL	26	#define F_SPACE_AFTER 0x00000040UL
15	#define F_ALLOW_NONREF 0x00000080UL	27	#define F_ALLOW_NONREF 0x00000100UL
16	#define F_SHRINK 0x00000100UL	28	#define F_SHRINK 0x00000200UL
		29	#define F_ALLOW_BLESSED 0x00000400UL
		30	#define F_CONV_BLESSED 0x00000800UL // NYI
17	#define F_MAXDEPTH 0xf8000000UL	31	#define F_MAXDEPTH 0xf8000000UL
18	#define S_MAXDEPTH 27	32	#define S_MAXDEPTH 27
		33	#define F_MAXSIZE 0x01f00000UL
		34	#define S_MAXSIZE 20
19		35
20	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))	36	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
21		37	#define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE ))
22	// F_SELFCONVERT? <=> to_json/toJson
23	// F_BLESSED? <=> { $__class__$ => }
24		38
25	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	39	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
26	#define F_DEFAULT (12UL << S_MAXDEPTH)	40	#define F_DEFAULT (9UL << S_MAXDEPTH)
27		41
28	#define INIT_SIZE 32 // initial scalar size to be allocated	42	#define INIT_SIZE 32 // initial scalar size to be allocated
29	#define INDENT_STEP 3 // spaces per indentation level	43	#define INDENT_STEP 3 // spaces per indentation level
30		44
31	#define UTF8_MAX_LEN 11 // for perls UTF-X: max. number of octets per character
32	#define SHORT_STRING_LEN 512 // special-case strings of up to this size	45	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
33		46
34	#define SB do {	47	#define SB do {
35	#define SE } while (0)	48	#define SE } while (0)
36		49
		50	#if __GNUC__ >= 3
		51	# define expect(expr,value) __builtin_expect ((expr),(value))
		52	# define inline inline
		53	#else
		54	# define expect(expr,value) (expr)
		55	# define inline static
		56	#endif
		57
		58	#define expect_false(expr) expect ((expr) != 0, 0)
		59	#define expect_true(expr) expect ((expr) != 0, 1)
		60
37	static HV *json_stash; // JSON::XS::	61	static HV json_stash, json_boolean_stash; // JSON::XS::
		62	static SV json_true, json_false;
		63
		64	typedef struct json {
		65	U32 flags;
		66	} JSON__XS;
38		67
39	/////////////////////////////////////////////////////////////////////////////	68	/////////////////////////////////////////////////////////////////////////////
40	// utility functions	69	// utility functions
41		70
42	static UV *	71	static UV *
…		…
65	// decode an utf-8 character and return it, or (UV)-1 in	94	// decode an utf-8 character and return it, or (UV)-1 in
66	// case of an error.	95	// case of an error.
67	// we special-case "safe" characters from U+80 .. U+7FF,	96	// we special-case "safe" characters from U+80 .. U+7FF,
68	// but use the very good perl function to parse anything else.	97	// but use the very good perl function to parse anything else.
69	// note that we never call this function for a ascii codepoints	98	// note that we never call this function for a ascii codepoints
70	static UV	99	inline UV
71	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)	100	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)
72	{	101	{
73	if (s[0] > 0xdf \|\| s[0] < 0xc2)	102	if (expect_false (s[0] > 0xdf \|\| s[0] < 0xc2))
74	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);	103	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
75	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)	104	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)
76	{	105	{
77	*clen = 2;	106	*clen = 2;
78	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);	107	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);
…		…
91	typedef struct	120	typedef struct
92	{	121	{
93	char *cur; // SvPVX (sv) + current output position	122	char *cur; // SvPVX (sv) + current output position
94	char *end; // SvEND (sv)	123	char *end; // SvEND (sv)
95	SV *sv; // result scalar	124	SV *sv; // result scalar
96	U32 flags; // F_*	125	struct json json;
97	U32 indent; // indentation level	126	U32 indent; // indentation level
98	U32 maxdepth; // max. indentation/recursion level	127	U32 maxdepth; // max. indentation/recursion level
99	} enc_t;	128	} enc_t;
100		129
101	static void	130	inline void
102	need (enc_t *enc, STRLEN len)	131	need (enc_t *enc, STRLEN len)
103	{	132	{
104	if (enc->cur + len >= enc->end)	133	if (expect_false (enc->cur + len >= enc->end))
105	{	134	{
106	STRLEN cur = enc->cur - SvPVX (enc->sv);	135	STRLEN cur = enc->cur - SvPVX (enc->sv);
107	SvGROW (enc->sv, cur + len + 1);	136	SvGROW (enc->sv, cur + len + 1);
108	enc->cur = SvPVX (enc->sv) + cur;	137	enc->cur = SvPVX (enc->sv) + cur;
109	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv);	138	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
110	}	139	}
111	}	140	}
112		141
113	static void	142	inline void
114	encode_ch (enc_t *enc, char ch)	143	encode_ch (enc_t *enc, char ch)
115	{	144	{
116	need (enc, 1);	145	need (enc, 1);
117	*enc->cur++ = ch;	146	*enc->cur++ = ch;
118	}	147	}
…		…
126		155
127	while (str < end)	156	while (str < end)
128	{	157	{
129	unsigned char ch = (unsigned char )str;	158	unsigned char ch = (unsigned char )str;
130		159
131	if (ch >= 0x20 && ch < 0x80) // most common case	160	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
132	{	161	{
133	if (ch == '"') // but with slow exceptions	162	if (expect_false (ch == '"')) // but with slow exceptions
134	{	163	{
135	need (enc, len += 1);	164	need (enc, len += 1);
136	*enc->cur++ = '\\';	165	*enc->cur++ = '\\';
137	*enc->cur++ = '"';	166	*enc->cur++ = '"';
138	}	167	}
139	else if (ch == '\\')	168	else if (expect_false (ch == '\\'))
140	{	169	{
141	need (enc, len += 1);	170	need (enc, len += 1);
142	*enc->cur++ = '\\';	171	*enc->cur++ = '\\';
143	*enc->cur++ = '\\';	172	*enc->cur++ = '\\';
144	}	173	}
…		…
162	STRLEN clen;	191	STRLEN clen;
163	UV uch;	192	UV uch;
164		193
165	if (is_utf8)	194	if (is_utf8)
166	{	195	{
167	//uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
168	uch = decode_utf8 (str, end - str, &clen);	196	uch = decode_utf8 (str, end - str, &clen);
169	if (clen == (STRLEN)-1)	197	if (clen == (STRLEN)-1)
170	croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);	198	croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);
171	}	199	}
172	else	200	else
…		…
176	}	204	}
177		205
178	if (uch > 0x10FFFFUL)	206	if (uch > 0x10FFFFUL)
179	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);	207	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
180		208
181	if (uch < 0x80 \|\| enc->flags & F_ASCII)	209	if (uch < 0x80 \|\| enc->json.flags & F_ASCII \|\| (enc->json.flags & F_LATIN1 && uch > 0xFF))
182	{	210	{
183	if (uch > 0xFFFFUL)	211	if (uch > 0xFFFFUL)
184	{	212	{
185	need (enc, len += 11);	213	need (enc, len += 11);
186	sprintf (enc->cur, "\\u%04x\\u%04x",	214	sprintf (enc->cur, "\\u%04x\\u%04x",
…		…
200	*enc->cur++ = hexdigit [(uch >> 0) & 15];	228	*enc->cur++ = hexdigit [(uch >> 0) & 15];
201	}	229	}
202		230
203	str += clen;	231	str += clen;
204	}	232	}
		233	else if (enc->json.flags & F_LATIN1)
		234	{
		235	*enc->cur++ = uch;
		236	str += clen;
		237	}
205	else if (is_utf8)	238	else if (is_utf8)
206	{	239	{
207	need (enc, len += clen);	240	need (enc, len += clen);
208	do	241	do
209	{	242	{
…		…
211	}	244	}
212	while (--clen);	245	while (--clen);
213	}	246	}
214	else	247	else
215	{	248	{
216	need (enc, len += UTF8_MAX_LEN - 1); // never more than 11 bytes needed	249	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed
217	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);	250	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
218	++str;	251	++str;
219	}	252	}
220	}	253	}
221	}	254	}
…		…
223		256
224	--len;	257	--len;
225	}	258	}
226	}	259	}
227		260
228	static void	261	inline void
229	encode_indent (enc_t *enc)	262	encode_indent (enc_t *enc)
230	{	263	{
231	if (enc->flags & F_INDENT)	264	if (enc->json.flags & F_INDENT)
232	{	265	{
233	int spaces = enc->indent * INDENT_STEP;	266	int spaces = enc->indent * INDENT_STEP;
234		267
235	need (enc, spaces);	268	need (enc, spaces);
236	memset (enc->cur, ' ', spaces);	269	memset (enc->cur, ' ', spaces);
237	enc->cur += spaces;	270	enc->cur += spaces;
238	}	271	}
239	}	272	}
240		273
241	static void	274	inline void
242	encode_space (enc_t *enc)	275	encode_space (enc_t *enc)
243	{	276	{
244	need (enc, 1);	277	need (enc, 1);
245	encode_ch (enc, ' ');	278	encode_ch (enc, ' ');
246	}	279	}
247		280
248	static void	281	inline void
249	encode_nl (enc_t *enc)	282	encode_nl (enc_t *enc)
250	{	283	{
251	if (enc->flags & F_INDENT)	284	if (enc->json.flags & F_INDENT)
252	{	285	{
253	need (enc, 1);	286	need (enc, 1);
254	encode_ch (enc, '\n');	287	encode_ch (enc, '\n');
255	}	288	}
256	}	289	}
257		290
258	static void	291	inline void
259	encode_comma (enc_t *enc)	292	encode_comma (enc_t *enc)
260	{	293	{
261	encode_ch (enc, ',');	294	encode_ch (enc, ',');
262		295
263	if (enc->flags & F_INDENT)	296	if (enc->json.flags & F_INDENT)
264	encode_nl (enc);	297	encode_nl (enc);
265	else if (enc->flags & F_SPACE_AFTER)	298	else if (enc->json.flags & F_SPACE_AFTER)
266	encode_space (enc);	299	encode_space (enc);
267	}	300	}
268		301
269	static void encode_sv (enc_t enc, SV sv);	302	static void encode_sv (enc_t enc, SV sv);
270		303
…		…
313	else	346	else
314	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	347	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
315		348
316	encode_ch (enc, '"');	349	encode_ch (enc, '"');
317		350
318	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);	351	if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc);
319	encode_ch (enc, ':');	352	encode_ch (enc, ':');
320	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);	353	if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc);
321	encode_sv (enc, HeVAL (he));	354	encode_sv (enc, HeVAL (he));
322	}	355	}
323		356
324	// compare hash entries, used when all keys are bytestrings	357	// compare hash entries, used when all keys are bytestrings
325	static int	358	static int
…		…
360	{	393	{
361	// for canonical output we have to sort by keys first	394	// for canonical output we have to sort by keys first
362	// actually, this is mostly due to the stupid so-called	395	// actually, this is mostly due to the stupid so-called
363	// security workaround added somewhere in 5.8.x.	396	// security workaround added somewhere in 5.8.x.
364	// that randomises hash orderings	397	// that randomises hash orderings
365	if (enc->flags & F_CANONICAL)	398	if (enc->json.flags & F_CANONICAL)
366	{	399	{
367	HE he, hes [count]; // if your compiler dies here, you need to enable C99 mode
368	int fast = 1;	400	int fast = 1;
		401	HE *he;
		402	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
		403	HE *hes = _alloca (count sizeof (HE));
		404	#else
		405	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode
		406	#endif
369		407
370	i = 0;	408	i = 0;
371	while ((he = hv_iternext (hv)))	409	while ((he = hv_iternext (hv)))
372	{	410	{
373	hes [i++] = he;	411	hes [i++] = he;
…		…
408		446
409	encode_nl (enc);	447	encode_nl (enc);
410	}	448	}
411	else	449	else
412	{	450	{
413	SV *sv;
414	HE *he = hv_iternext (hv);	451	HE *he = hv_iternext (hv);
415		452
416	for (;;)	453	for (;;)
417	{	454	{
418	encode_indent (enc);	455	encode_indent (enc);
…		…
433		470
434	// encode objects, arrays and special \0=false and \1=true values.	471	// encode objects, arrays and special \0=false and \1=true values.
435	static void	472	static void
436	encode_rv (enc_t enc, SV sv)	473	encode_rv (enc_t enc, SV sv)
437	{	474	{
		475	svtype svt;
		476
438	SvGETMAGIC (sv);	477	SvGETMAGIC (sv);
439
440	svtype svt = SvTYPE (sv);	478	svt = SvTYPE (sv);
441		479
		480	if (expect_false (SvOBJECT (sv)))
		481	{
		482	if (SvSTASH (sv) == json_boolean_stash)
		483	{
		484	if (SvIV (sv) == 0)
		485	encode_str (enc, "false", 5, 0);
		486	else
		487	encode_str (enc, "true", 4, 0);
		488	}
		489	else
		490	{
		491	#if 0
		492	if (0 && sv_derived_from (rv, "JSON::Literal"))
		493	{
		494	// not yet
		495	}
		496	#endif
		497	if (enc->json.flags & F_CONV_BLESSED)
		498	{
		499	// we re-bless the reference to get overload and other niceties right
		500	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 1);
		501
		502	if (to_json)
		503	{
		504	dSP;
		505	ENTER;
		506	SAVETMPS;
		507	PUSHMARK (SP);
		508	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
		509
		510	// calling with G_SCALAR ensures that we always get a 1 reutrn value
		511	// check anyways.
		512	PUTBACK;
		513	assert (1 == call_sv ((SV *)GvCV (to_json), G_SCALAR));
		514	SPAGAIN;
		515
		516	encode_sv (enc, POPs);
		517
		518	FREETMPS;
		519	LEAVE;
		520	}
		521	else if (enc->json.flags & F_ALLOW_BLESSED)
		522	encode_str (enc, "null", 4, 0);
		523	else
		524	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
		525	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		526	}
		527	else if (enc->json.flags & F_ALLOW_BLESSED)
		528	encode_str (enc, "null", 4, 0);
		529	else
		530	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",
		531	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		532	}
		533	}
442	if (svt == SVt_PVHV)	534	else if (svt == SVt_PVHV)
443	encode_hv (enc, (HV *)sv);	535	encode_hv (enc, (HV *)sv);
444	else if (svt == SVt_PVAV)	536	else if (svt == SVt_PVAV)
445	encode_av (enc, (AV *)sv);	537	encode_av (enc, (AV *)sv);
446	else if (svt < SVt_PVAV)	538	else if (svt < SVt_PVAV)
447	{	539	{
…		…
471	encode_str (enc, str, len, SvUTF8 (sv));	563	encode_str (enc, str, len, SvUTF8 (sv));
472	encode_ch (enc, '"');	564	encode_ch (enc, '"');
473	}	565	}
474	else if (SvNOKp (sv))	566	else if (SvNOKp (sv))
475	{	567	{
		568	// trust that perl will do the right thing w.r.t. JSON syntax.
476	need (enc, NV_DIG + 32);	569	need (enc, NV_DIG + 32);
477	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);	570	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);
478	enc->cur += strlen (enc->cur);	571	enc->cur += strlen (enc->cur);
479	}	572	}
480	else if (SvIOKp (sv))	573	else if (SvIOKp (sv))
481	{	574	{
482	need (enc, 64);	575	// we assume we can always read an IV as a UV
		576	if (SvUV (sv) & ~(UV)0x7fff)
		577	{
		578	// large integer, use the (rather slow) snprintf way.
		579	need (enc, sizeof (UV) * 3);
483	enc->cur +=	580	enc->cur +=
484	SvIsUV(sv)	581	SvIsUV(sv)
485	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))	582	? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv))
486	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));	583	: snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv));
		584	}
		585	else
		586	{
		587	// optimise the "small number case"
		588	// code will likely be branchless and use only a single multiplication
		589	I32 i = SvIV (sv);
		590	U32 u;
		591	char digit, nz = 0;
		592
		593	need (enc, 6);
		594
		595	*enc->cur = '-'; enc->cur += i < 0 ? 1 : 0;
		596	u = i < 0 ? -i : i;
		597
		598	// convert to 4.28 fixed-point representation
		599	u = u * ((0xfffffff + 10000) / 10000); // 10**5, 5 fractional digits
		600
		601	// now output digit by digit, each time masking out the integer part
		602	// and multiplying by 5 while moving the decimal point one to the right,
		603	// resulting in a net multiplication by 10.
		604	// we always write the digit to memory but conditionally increment
		605	// the pointer, to ease the usage of conditional move instructions.
		606	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffff) 5;
		607	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffff) 5;
		608	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffff) 5;
		609	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffff) 5;
		610	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'
		611	}
487	}	612	}
488	else if (SvROK (sv))	613	else if (SvROK (sv))
489	encode_rv (enc, SvRV (sv));	614	encode_rv (enc, SvRV (sv));
490	else if (!SvOK (sv))	615	else if (!SvOK (sv))
491	encode_str (enc, "null", 4, 0);	616	encode_str (enc, "null", 4, 0);
…		…
493	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	618	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
494	SvPV_nolen (sv), SvFLAGS (sv));	619	SvPV_nolen (sv), SvFLAGS (sv));
495	}	620	}
496		621
497	static SV *	622	static SV *
498	encode_json (SV *scalar, U32 flags)	623	encode_json (SV scalar, struct json json)
499	{	624	{
		625	enc_t enc;
		626
500	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))	627	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))
501	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	628	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
502		629
503	enc_t enc;	630	enc.json = *json;
504	enc.flags = flags;
505	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	631	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
506	enc.cur = SvPVX (enc.sv);	632	enc.cur = SvPVX (enc.sv);
507	enc.end = SvEND (enc.sv);	633	enc.end = SvEND (enc.sv);
508	enc.indent = 0;	634	enc.indent = 0;
509	enc.maxdepth = DEC_DEPTH (flags);	635	enc.maxdepth = DEC_DEPTH (enc.json.flags);
510		636
511	SvPOK_only (enc.sv);	637	SvPOK_only (enc.sv);
512	encode_sv (&enc, scalar);	638	encode_sv (&enc, scalar);
513		639
		640	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
		641	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
		642
514	if (!(flags & (F_ASCII \| F_UTF8)))	643	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
515	SvUTF8_on (enc.sv);	644	SvUTF8_on (enc.sv);
516		645
517	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
518
519	if (enc.flags & F_SHRINK)	646	if (enc.json.flags & F_SHRINK)
520	shrink (enc.sv);	647	shrink (enc.sv);
521		648
522	return enc.sv;	649	return enc.sv;
523	}	650	}
524		651
…		…
529	typedef struct	656	typedef struct
530	{	657	{
531	char *cur; // current parser pointer	658	char *cur; // current parser pointer
532	char *end; // end of input string	659	char *end; // end of input string
533	const char *err; // parse error, if != 0	660	const char *err; // parse error, if != 0
534	U32 flags; // F_*	661	struct json json;
535	U32 depth; // recursion depth	662	U32 depth; // recursion depth
536	U32 maxdepth; // recursion depth limit	663	U32 maxdepth; // recursion depth limit
537	} dec_t;	664	} dec_t;
538		665
539	static void	666	inline void
540	decode_ws (dec_t *dec)	667	decode_ws (dec_t *dec)
541	{	668	{
542	for (;;)	669	for (;;)
543	{	670	{
544	char ch = *dec->cur;	671	char ch = *dec->cur;
…		…
570	decode_4hex (dec_t *dec)	697	decode_4hex (dec_t *dec)
571	{	698	{
572	signed char d1, d2, d3, d4;	699	signed char d1, d2, d3, d4;
573	unsigned char cur = (unsigned char )dec->cur;	700	unsigned char cur = (unsigned char )dec->cur;
574		701
575	d1 = decode_hexdigit [cur [0]]; if (d1 < 0) ERR ("four hexadecimal digits expected");	702	d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("exactly four hexadecimal digits expected");
576	d2 = decode_hexdigit [cur [1]]; if (d2 < 0) ERR ("four hexadecimal digits expected");	703	d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("exactly four hexadecimal digits expected");
577	d3 = decode_hexdigit [cur [2]]; if (d3 < 0) ERR ("four hexadecimal digits expected");	704	d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("exactly four hexadecimal digits expected");
578	d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected");	705	d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("exactly four hexadecimal digits expected");
579		706
580	dec->cur += 4;	707	dec->cur += 4;
581		708
582	return ((UV)d1) << 12	709	return ((UV)d1) << 12
583	\| ((UV)d2) << 8	710	\| ((UV)d2) << 8
…		…
591	static SV *	718	static SV *
592	decode_str (dec_t *dec)	719	decode_str (dec_t *dec)
593	{	720	{
594	SV *sv = 0;	721	SV *sv = 0;
595	int utf8 = 0;	722	int utf8 = 0;
		723	char *dec_cur = dec->cur;
596		724
597	do	725	do
598	{	726	{
599	char buf [SHORT_STRING_LEN + UTF8_MAX_LEN];	727	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];
600	char *cur = buf;	728	char *cur = buf;
601		729
602	do	730	do
603	{	731	{
604	unsigned char ch = (unsigned char )dec->cur++;	732	unsigned char ch = (unsigned char )dec_cur++;
605		733
606	if (ch == '"')	734	if (expect_false (ch == '"'))
607	{	735	{
608	--dec->cur;	736	--dec_cur;
609	break;	737	break;
610	}	738	}
611	else if (ch == '\\')	739	else if (expect_false (ch == '\\'))
612	{	740	{
613	switch (*dec->cur)	741	switch (*dec_cur)
614	{	742	{
615	case '\\':	743	case '\\':
616	case '/':	744	case '/':
617	case '"': cur++ = dec->cur++; break;	745	case '"': cur++ = dec_cur++; break;
618		746
619	case 'b': ++dec->cur; *cur++ = '\010'; break;	747	case 'b': ++dec_cur; *cur++ = '\010'; break;
620	case 't': ++dec->cur; *cur++ = '\011'; break;	748	case 't': ++dec_cur; *cur++ = '\011'; break;
621	case 'n': ++dec->cur; *cur++ = '\012'; break;	749	case 'n': ++dec_cur; *cur++ = '\012'; break;
622	case 'f': ++dec->cur; *cur++ = '\014'; break;	750	case 'f': ++dec_cur; *cur++ = '\014'; break;
623	case 'r': ++dec->cur; *cur++ = '\015'; break;	751	case 'r': ++dec_cur; *cur++ = '\015'; break;
624		752
625	case 'u':	753	case 'u':
626	{	754	{
627	UV lo, hi;	755	UV lo, hi;
628	++dec->cur;	756	++dec_cur;
629		757
		758	dec->cur = dec_cur;
630	hi = decode_4hex (dec);	759	hi = decode_4hex (dec);
		760	dec_cur = dec->cur;
631	if (hi == (UV)-1)	761	if (hi == (UV)-1)
632	goto fail;	762	goto fail;
633		763
634	// possibly a surrogate pair	764	// possibly a surrogate pair
635	if (hi >= 0xd800)	765	if (hi >= 0xd800)
636	if (hi < 0xdc00)	766	if (hi < 0xdc00)
637	{	767	{
638	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')	768	if (dec_cur [0] != '\\' \|\| dec_cur [1] != 'u')
639	ERR ("missing low surrogate character in surrogate pair");	769	ERR ("missing low surrogate character in surrogate pair");
640		770
641	dec->cur += 2;	771	dec_cur += 2;
642		772
		773	dec->cur = dec_cur;
643	lo = decode_4hex (dec);	774	lo = decode_4hex (dec);
		775	dec_cur = dec->cur;
644	if (lo == (UV)-1)	776	if (lo == (UV)-1)
645	goto fail;	777	goto fail;
646		778
647	if (lo < 0xdc00 \|\| lo >= 0xe000)	779	if (lo < 0xdc00 \|\| lo >= 0xe000)
648	ERR ("surrogate pair expected");	780	ERR ("surrogate pair expected");
…		…
662	*cur++ = hi;	794	*cur++ = hi;
663	}	795	}
664	break;	796	break;
665		797
666	default:	798	default:
667	--dec->cur;	799	--dec_cur;
668	ERR ("illegal backslash escape sequence in string");	800	ERR ("illegal backslash escape sequence in string");
669	}	801	}
670	}	802	}
671	else if (ch >= 0x20 && ch <= 0x7f)	803	else if (expect_true (ch >= 0x20 && ch <= 0x7f))
672	*cur++ = ch;	804	*cur++ = ch;
673	else if (ch >= 0x80)	805	else if (ch >= 0x80)
674	{	806	{
675	--dec->cur;
676
677	STRLEN clen;	807	STRLEN clen;
		808	UV uch;
		809
		810	--dec_cur;
		811
678	UV uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen);	812	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
679	if (clen == (STRLEN)-1)	813	if (clen == (STRLEN)-1)
680	ERR ("malformed UTF-8 character in JSON string");	814	ERR ("malformed UTF-8 character in JSON string");
681		815
682	do	816	do
683	cur++ = dec->cur++;	817	cur++ = dec_cur++;
684	while (--clen);	818	while (--clen);
685		819
686	utf8 = 1;	820	utf8 = 1;
687	}	821	}
688	else	822	else
689	{	823	{
690	--dec->cur;	824	--dec_cur;
691		825
692	if (!ch)	826	if (!ch)
693	ERR ("unexpected end of string while parsing json string");	827	ERR ("unexpected end of string while parsing JSON string");
694	else	828	else
695	ERR ("invalid character encountered while parsing json string");	829	ERR ("invalid character encountered while parsing JSON string");
696	}	830	}
697	}	831	}
698	while (cur < buf + SHORT_STRING_LEN);	832	while (cur < buf + SHORT_STRING_LEN);
699		833
		834	{
700	STRLEN len = cur - buf;	835	STRLEN len = cur - buf;
701		836
702	if (sv)	837	if (sv)
703	{	838	{
704	SvGROW (sv, SvCUR (sv) + len + 1);	839	SvGROW (sv, SvCUR (sv) + len + 1);
705	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);	840	memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
706	SvCUR_set (sv, SvCUR (sv) + len);	841	SvCUR_set (sv, SvCUR (sv) + len);
707	}	842	}
708	else	843	else
709	sv = newSVpvn (buf, len);	844	sv = newSVpvn (buf, len);
710	}	845	}
		846	}
711	while (*dec->cur != '"');	847	while (*dec_cur != '"');
712		848
713	++dec->cur;	849	++dec_cur;
714		850
715	if (sv)	851	if (sv)
716	{	852	{
717	SvPOK_only (sv);	853	SvPOK_only (sv);
718	*SvEND (sv) = 0;	854	*SvEND (sv) = 0;
…		…
721	SvUTF8_on (sv);	857	SvUTF8_on (sv);
722	}	858	}
723	else	859	else
724	sv = newSVpvn ("", 0);	860	sv = newSVpvn ("", 0);
725		861
		862	dec->cur = dec_cur;
726	return sv;	863	return sv;
727		864
728	fail:	865	fail:
		866	dec->cur = dec_cur;
729	return 0;	867	return 0;
730	}	868	}
731		869
732	static SV *	870	static SV *
733	decode_num (dec_t *dec)	871	decode_num (dec_t *dec)
…		…
791	is_nv = 1;	929	is_nv = 1;
792	}	930	}
793		931
794	if (!is_nv)	932	if (!is_nv)
795	{	933	{
796	UV uv;	934	// special case the rather common 1..4-digit-int case, assumes 32 bit ints or so
797	int numtype = grok_number (start, dec->cur - start, &uv);	935	if (*start == '-')
798	if (numtype & IS_NUMBER_IN_UV)	936	switch (dec->cur - start)
799	if (numtype & IS_NUMBER_NEG)
800	{	937	{
801	if (uv < (UV)IV_MIN)	938	case 2: return newSViv (-( start [1] - '0' * 1));
802	return newSViv (-(IV)uv);	939	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));
		940	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
		941	case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
803	}	942	}
		943	else
		944	switch (dec->cur - start)
		945	{
		946	case 1: return newSViv ( start [0] - '0' * 1);
		947	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
		948	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
		949	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
		950	}
		951
		952	{
		953	UV uv;
		954	int numtype = grok_number (start, dec->cur - start, &uv);
		955	if (numtype & IS_NUMBER_IN_UV)
		956	if (numtype & IS_NUMBER_NEG)
		957	{
		958	if (uv < (UV)IV_MIN)
		959	return newSViv (-(IV)uv);
		960	}
804	else	961	else
805	return newSVuv (uv);	962	return newSVuv (uv);
		963
		964	// here would likely be the place for bigint support
806	}	965	}
		966	}
807		967
		968	// if we ever support bigint or bigfloat, this is the place for bigfloat
808	return newSVnv (Atof (start));	969	return newSVnv (Atof (start));
809		970
810	fail:	971	fail:
811	return 0;	972	return 0;
812	}	973	}
…		…
866	if (*dec->cur == '}')	1027	if (*dec->cur == '}')
867	++dec->cur;	1028	++dec->cur;
868	else	1029	else
869	for (;;)	1030	for (;;)
870	{	1031	{
871	SV key, value;
872
873	decode_ws (dec); EXPECT_CH ('"');	1032	decode_ws (dec); EXPECT_CH ('"');
874		1033
875	key = decode_str (dec);	1034	// heuristic: assume that
876	if (!key)	1035	// a) decode_str + hv_store_ent are abysmally slow.
877	goto fail;	1036	// b) most hash keys are short, simple ascii text.
		1037	// => try to "fast-match" such strings to avoid
		1038	// the overhead of decode_str + hv_store_ent.
		1039	{
		1040	SV *value;
		1041	char *p = dec->cur;
		1042	char *e = p + 24; // only try up to 24 bytes
878		1043
879	decode_ws (dec); EXPECT_CH (':');	1044	for (;;)
880
881	value = decode_sv (dec);
882	if (!value)
883	{	1045	{
		1046	// the >= 0x80 is true on most architectures
		1047	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')
		1048	{
		1049	// slow path, back up and use decode_str
		1050	SV *key = decode_str (dec);
		1051	if (!key)
		1052	goto fail;
		1053
		1054	decode_ws (dec); EXPECT_CH (':');
		1055
		1056	value = decode_sv (dec);
		1057	if (!value)
		1058	{
		1059	SvREFCNT_dec (key);
		1060	goto fail;
		1061	}
		1062
		1063	hv_store_ent (hv, key, value, 0);
884	SvREFCNT_dec (key);	1064	SvREFCNT_dec (key);
		1065
		1066	break;
		1067	}
		1068	else if (*p == '"')
		1069	{
		1070	// fast path, got a simple key
		1071	char *key = dec->cur;
		1072	int len = p - key;
		1073	dec->cur = p + 1;
		1074
		1075	decode_ws (dec); EXPECT_CH (':');
		1076
		1077	value = decode_sv (dec);
		1078	if (!value)
885	goto fail;	1079	goto fail;
		1080
		1081	hv_store (hv, key, len, value, 0);
		1082
		1083	break;
		1084	}
		1085
		1086	++p;
886	}	1087	}
887		1088	}
888	hv_store_ent (hv, key, value, 0);
889	SvREFCNT_dec (key);
890		1089
891	decode_ws (dec);	1090	decode_ws (dec);
892		1091
893	if (*dec->cur == '}')	1092	if (*dec->cur == '}')
894	{	1093	{
…		…
913		1112
914	static SV *	1113	static SV *
915	decode_sv (dec_t *dec)	1114	decode_sv (dec_t *dec)
916	{	1115	{
917	decode_ws (dec);	1116	decode_ws (dec);
		1117
		1118	// the beauty of JSON: you need exactly one character lookahead
		1119	// to parse anything.
918	switch (*dec->cur)	1120	switch (*dec->cur)
919	{	1121	{
920	case '"': ++dec->cur; return decode_str (dec);	1122	case '"': ++dec->cur; return decode_str (dec);
921	case '[': ++dec->cur; return decode_av (dec);	1123	case '[': ++dec->cur; return decode_av (dec);
922	case '{': ++dec->cur; return decode_hv (dec);	1124	case '{': ++dec->cur; return decode_hv (dec);
…		…
928		1130
929	case 't':	1131	case 't':
930	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1132	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
931	{	1133	{
932	dec->cur += 4;	1134	dec->cur += 4;
933	return newSViv (1);	1135	return SvREFCNT_inc (json_true);
934	}	1136	}
935	else	1137	else
936	ERR ("'true' expected");	1138	ERR ("'true' expected");
937		1139
938	break;	1140	break;
939		1141
940	case 'f':	1142	case 'f':
941	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1143	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
942	{	1144	{
943	dec->cur += 5;	1145	dec->cur += 5;
944	return newSViv (0);	1146	return SvREFCNT_inc (json_false);
945	}	1147	}
946	else	1148	else
947	ERR ("'false' expected");	1149	ERR ("'false' expected");
948		1150
949	break;	1151	break;
…		…
958	ERR ("'null' expected");	1160	ERR ("'null' expected");
959		1161
960	break;	1162	break;
961		1163
962	default:	1164	default:
963	ERR ("malformed json string, neither array, object, number, string or atom");	1165	ERR ("malformed JSON string, neither array, object, number, string or atom");
964	break;	1166	break;
965	}	1167	}
966		1168
967	fail:	1169	fail:
968	return 0;	1170	return 0;
969	}	1171	}
970		1172
971	static SV *	1173	static SV *
972	decode_json (SV *string, U32 flags)	1174	decode_json (SV string, struct json json, UV *offset_return)
973	{	1175	{
		1176	dec_t dec;
		1177	UV offset;
974	SV *sv;	1178	SV *sv;
975		1179
		1180	SvGETMAGIC (string);
976	SvUPGRADE (string, SVt_PV);	1181	SvUPGRADE (string, SVt_PV);
977		1182
		1183	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))
		1184	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		1185	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));
		1186
978	if (flags & F_UTF8)	1187	if (json->flags & F_UTF8)
979	sv_utf8_downgrade (string, 0);	1188	sv_utf8_downgrade (string, 0);
980	else	1189	else
981	sv_utf8_upgrade (string);	1190	sv_utf8_upgrade (string);
982		1191
983	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1192	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
984		1193
985	dec_t dec;	1194	dec.json = *json;
986	dec.flags = flags;
987	dec.cur = SvPVX (string);	1195	dec.cur = SvPVX (string);
988	dec.end = SvEND (string);	1196	dec.end = SvEND (string);
989	dec.err = 0;	1197	dec.err = 0;
990	dec.depth = 0;	1198	dec.depth = 0;
991	dec.maxdepth = DEC_DEPTH (dec.flags);	1199	dec.maxdepth = DEC_DEPTH (dec.json.flags);
992		1200
993	*dec.end = 0; // this should basically be a nop, too, but make sure its there	1201	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
994	sv = decode_sv (&dec);	1202	sv = decode_sv (&dec);
995		1203
		1204	if (!(offset_return \|\| !sv))
		1205	{
		1206	// check for trailing garbage
		1207	decode_ws (&dec);
		1208
		1209	if (*dec.cur)
		1210	{
		1211	dec.err = "garbage after JSON object";
		1212	SvREFCNT_dec (sv);
		1213	sv = 0;
		1214	}
		1215	}
		1216
		1217	if (offset_return \|\| !sv)
		1218	{
		1219	offset = dec.json.flags & F_UTF8
		1220	? dec.cur - SvPVX (string)
		1221	: utf8_distance (dec.cur, SvPVX (string));
		1222
		1223	if (offset_return)
		1224	*offset_return = offset;
		1225	}
		1226
996	if (!sv)	1227	if (!sv)
997	{	1228	{
998	IV offset = dec.flags & F_UTF8
999	? dec.cur - SvPVX (string)
1000	: utf8_distance (dec.cur, SvPVX (string));
1001	SV *uni = sv_newmortal ();	1229	SV *uni = sv_newmortal ();
1002		1230
1003	// horrible hack to silence warning inside pv_uni_display	1231	// horrible hack to silence warning inside pv_uni_display
1004	COP cop = *PL_curcop;	1232	COP cop = *PL_curcop;
1005	cop.cop_warnings = pWARN_NONE;	1233	cop.cop_warnings = pWARN_NONE;
…		…
1015	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1243	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1016	}	1244	}
1017		1245
1018	sv = sv_2mortal (sv);	1246	sv = sv_2mortal (sv);
1019		1247
1020	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))	1248	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))
1021	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1249	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1022		1250
1023	return sv;	1251	return sv;
1024	}	1252	}
1025		1253
…		…
1029	MODULE = JSON::XS PACKAGE = JSON::XS	1257	MODULE = JSON::XS PACKAGE = JSON::XS
1030		1258
1031	BOOT:	1259	BOOT:
1032	{	1260	{
1033	int i;	1261	int i;
1034
1035	memset (decode_hexdigit, 0xff, 256);
1036		1262
1037	for (i = 0; i < 256; ++i)	1263	for (i = 0; i < 256; ++i)
1038	decode_hexdigit [i] =	1264	decode_hexdigit [i] =
1039	i >= '0' && i <= '9' ? i - '0'	1265	i >= '0' && i <= '9' ? i - '0'
1040	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1266	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1041	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1267	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1042	: -1;	1268	: -1;
1043		1269
1044	json_stash = gv_stashpv ("JSON::XS", 1);	1270	json_stash = gv_stashpv ("JSON::XS" , 1);
		1271	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);
		1272
		1273	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );
		1274	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);
1045	}	1275	}
1046		1276
1047	PROTOTYPES: DISABLE	1277	PROTOTYPES: DISABLE
1048		1278
1049	SV new (char dummy)	1279	SV new (char dummy)
…		…
1052	OUTPUT:	1282	OUTPUT:
1053	RETVAL	1283	RETVAL
1054		1284
1055	SV ascii (SV self, int enable = 1)	1285	SV ascii (SV self, int enable = 1)
1056	ALIAS:	1286	ALIAS:
1057	ascii = F_ASCII	1287	ascii = F_ASCII
		1288	latin1 = F_LATIN1
1058	utf8 = F_UTF8	1289	utf8 = F_UTF8
1059	indent = F_INDENT	1290	indent = F_INDENT
1060	canonical = F_CANONICAL	1291	canonical = F_CANONICAL
1061	space_before = F_SPACE_BEFORE	1292	space_before = F_SPACE_BEFORE
1062	space_after = F_SPACE_AFTER	1293	space_after = F_SPACE_AFTER
1063	pretty = F_PRETTY	1294	pretty = F_PRETTY
1064	allow_nonref = F_ALLOW_NONREF	1295	allow_nonref = F_ALLOW_NONREF
1065	shrink = F_SHRINK	1296	shrink = F_SHRINK
		1297	allow_blessed = F_ALLOW_BLESSED
		1298	convert_blessed = F_CONV_BLESSED
1066	CODE:	1299	CODE:
1067	{	1300	{
1068	UV *uv = SvJSON (self);	1301	UV *uv = SvJSON (self);
1069	if (enable)	1302	if (enable)
1070	*uv \|= ix;	1303	*uv \|= ix;
…		…
1074	RETVAL = newSVsv (self);	1307	RETVAL = newSVsv (self);
1075	}	1308	}
1076	OUTPUT:	1309	OUTPUT:
1077	RETVAL	1310	RETVAL
1078		1311
1079	SV max_depth (SV self, int max_depth = 0x80000000UL)	1312	SV max_depth (SV self, UV max_depth = 0x80000000UL)
1080	CODE:	1313	CODE:
1081	{	1314	{
1082	UV *uv = SvJSON (self);	1315	UV *uv = SvJSON (self);
1083	UV log2 = 0;	1316	UV log2 = 0;
1084		1317
…		…
1092	RETVAL = newSVsv (self);	1325	RETVAL = newSVsv (self);
1093	}	1326	}
1094	OUTPUT:	1327	OUTPUT:
1095	RETVAL	1328	RETVAL
1096		1329
		1330	SV max_size (SV self, UV max_size = 0)
		1331	CODE:
		1332	{
		1333	UV *uv = SvJSON (self);
		1334	UV log2 = 0;
		1335
		1336	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
		1337	if (max_size == 1) max_size = 2;
		1338
		1339	while ((1UL << log2) < max_size)
		1340	++log2;
		1341
		1342	uv = uv & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
		1343
		1344	RETVAL = newSVsv (self);
		1345	}
		1346	OUTPUT:
		1347	RETVAL
		1348
1097	void encode (SV self, SV scalar)	1349	void encode (SV self, SV scalar)
1098	PPCODE:	1350	PPCODE:
		1351	{
		1352	struct json json = { *SvJSON (self) };
1099	XPUSHs (encode_json (scalar, *SvJSON (self)));	1353	XPUSHs (encode_json (scalar, &json));
		1354	}
1100		1355
1101	void decode (SV self, SV jsonstr)	1356	void decode (SV self, SV jsonstr)
1102	PPCODE:	1357	PPCODE:
		1358	{
		1359	struct json json = { *SvJSON (self) };
1103	XPUSHs (decode_json (jsonstr, *SvJSON (self)));	1360	XPUSHs (decode_json (jsonstr, &json, 0));
		1361	}
		1362
		1363	void decode_prefix (SV self, SV jsonstr)
		1364	PPCODE:
		1365	{
		1366	UV offset;
		1367	struct json json = { *SvJSON (self) };
		1368	EXTEND (SP, 2);
		1369	PUSHs (decode_json (jsonstr, &json, &offset));
		1370	PUSHs (sv_2mortal (newSVuv (offset)));
		1371	}
1104		1372
1105	PROTOTYPES: ENABLE	1373	PROTOTYPES: ENABLE
1106		1374
1107	void to_json (SV *scalar)	1375	void to_json (SV *scalar)
1108	ALIAS:
1109	objToJson = 0
1110	PPCODE:	1376	PPCODE:
		1377	{
		1378	struct json json = { F_DEFAULT \| F_UTF8 };
1111	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));	1379	XPUSHs (encode_json (scalar, &json));
		1380	}
1112		1381
1113	void from_json (SV *jsonstr)	1382	void from_json (SV *jsonstr)
1114	ALIAS:
1115	jsonToObj = 0
1116	PPCODE:	1383	PPCODE:
		1384	{
		1385	struct json json = { F_DEFAULT \| F_UTF8 };
1117	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8));	1386	XPUSHs (decode_json (jsonstr, &json, 0));
		1387	}
1118		1388

Diff Legend

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

Comparing JSON-XS/XS.xs (file contents): Revision 1.23 by root, Tue Apr 3 23:34:17 2007 UTC vs. Revision 1.47 by root, Sun Jul 1 14:08:03 2007 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.23 by root, Tue Apr 3 23:34:17 2007 UTC vs.
Revision 1.47 by root, Sun Jul 1 14:08:03 2007 UTC