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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.25 by root, Fri Apr 6 20:37:22 2007 UTC vs.
Revision 1.59 by root, Mon Aug 13 16:14:20 2007 UTC

…		…
1	#include "EXTERN.h"	1	#include "EXTERN.h"
2	#include "perl.h"	2	#include "perl.h"
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>
		9	#include <float.h>
8		10
		11	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
		12	# define snprintf _snprintf // C compilers have this in stdio.h
		13	#endif
		14
		15	// some old perls do not have this, try to make it work, no
		16	// guarentees, though. if it breaks, you get to keep the pieces.
		17	#ifndef UTF8_MAXBYTES
		18	# define UTF8_MAXBYTES 13
		19	#endif
		20
9	#define F_ASCII 0x00000001UL	21	#define F_ASCII 0x00000001UL
		22	#define F_LATIN1 0x00000002UL
10	#define F_UTF8 0x00000002UL	23	#define F_UTF8 0x00000004UL
11	#define F_INDENT 0x00000004UL	24	#define F_INDENT 0x00000008UL
12	#define F_CANONICAL 0x00000008UL	25	#define F_CANONICAL 0x00000010UL
13	#define F_SPACE_BEFORE 0x00000010UL	26	#define F_SPACE_BEFORE 0x00000020UL
14	#define F_SPACE_AFTER 0x00000020UL	27	#define F_SPACE_AFTER 0x00000040UL
15	#define F_ALLOW_NONREF 0x00000080UL	28	#define F_ALLOW_NONREF 0x00000100UL
16	#define F_SHRINK 0x00000100UL	29	#define F_SHRINK 0x00000200UL
		30	#define F_ALLOW_BLESSED 0x00000400UL
		31	#define F_CONV_BLESSED 0x00000800UL
17	#define F_MAXDEPTH 0xf8000000UL	32	#define F_MAXDEPTH 0xf8000000UL
18	#define S_MAXDEPTH 27	33	#define S_MAXDEPTH 27
		34	#define F_MAXSIZE 0x01f00000UL
		35	#define S_MAXSIZE 20
		36	#define F_HOOK 0x00080000UL // some hooks exist, so slow-path processing
19		37
20	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))	38	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
21		39	#define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE ))
22	// F_SELFCONVERT? <=> to_json/toJson
23	// F_BLESSED? <=> { $__class__$ => }
24		40
25	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	41	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
26	#define F_DEFAULT (9UL << S_MAXDEPTH)	42	#define F_DEFAULT (9UL << S_MAXDEPTH)
27		43
28	#define INIT_SIZE 32 // initial scalar size to be allocated	44	#define INIT_SIZE 32 // initial scalar size to be allocated
29	#define INDENT_STEP 3 // spaces per indentation level	45	#define INDENT_STEP 3 // spaces per indentation level
30		46
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	47	#define SHORT_STRING_LEN 16384 // special-case strings of up to this size
33		48
34	#define SB do {	49	#define SB do {
35	#define SE } while (0)	50	#define SE } while (0)
36		51
		52	#if __GNUC__ >= 3
		53	# define expect(expr,value) __builtin_expect ((expr),(value))
		54	# define inline inline
		55	#else
		56	# define expect(expr,value) (expr)
		57	# define inline static
		58	#endif
		59
		60	#define expect_false(expr) expect ((expr) != 0, 0)
		61	#define expect_true(expr) expect ((expr) != 0, 1)
		62
		63	#ifdef USE_ITHREADS
		64	# define JSON_SLOW 1
		65	# define JSON_STASH (json_stash ? json_stash : gv_stashpv ("JSON::XS", 1))
		66	#else
		67	# define JSON_SLOW 0
		68	# define JSON_STASH json_stash
		69	#endif
		70
37	static HV *json_stash; // JSON::XS::	71	static HV json_stash, json_boolean_stash; // JSON::XS::
		72	static SV json_true, json_false;
		73
		74	typedef struct {
		75	U32 flags;
		76	SV *cb_object;
		77	HV *cb_sk_object;
		78	} JSON;
38		79
39	/////////////////////////////////////////////////////////////////////////////	80	/////////////////////////////////////////////////////////////////////////////
40	// utility functions	81	// utility functions
41		82
42	static UV *	83	inline void
43	SvJSON (SV *sv)
44	{
45	if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash))
46	croak ("object is not of type JSON::XS");
47
48	return &SvUVX (SvRV (sv));
49	}
50
51	static void
52	shrink (SV *sv)	84	shrink (SV *sv)
53	{	85	{
54	sv_utf8_downgrade (sv, 1);	86	sv_utf8_downgrade (sv, 1);
55	if (SvLEN (sv) > SvCUR (sv) + 1)	87	if (SvLEN (sv) > SvCUR (sv) + 1)
56	{	88	{
65	// decode an utf-8 character and return it, or (UV)-1 in	97	// decode an utf-8 character and return it, or (UV)-1 in
66	// case of an error.	98	// case of an error.
67	// we special-case "safe" characters from U+80 .. U+7FF,	99	// we special-case "safe" characters from U+80 .. U+7FF,
68	// but use the very good perl function to parse anything else.	100	// but use the very good perl function to parse anything else.
69	// note that we never call this function for a ascii codepoints	101	// note that we never call this function for a ascii codepoints
70	static UV	102	inline UV
71	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)	103	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)
72	{	104	{
73	if (s[0] > 0xdf \|\| s[0] < 0xc2)	105	if (expect_false (s[0] > 0xdf \|\| s[0] < 0xc2))
74	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);	106	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
75	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)	107	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)
76	{	108	{
77	*clen = 2;	109	*clen = 2;
78	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);	110	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);
…		…
91	typedef struct	123	typedef struct
92	{	124	{
93	char *cur; // SvPVX (sv) + current output position	125	char *cur; // SvPVX (sv) + current output position
94	char *end; // SvEND (sv)	126	char *end; // SvEND (sv)
95	SV *sv; // result scalar	127	SV *sv; // result scalar
96	U32 flags; // F_*	128	JSON json;
97	U32 indent; // indentation level	129	U32 indent; // indentation level
98	U32 maxdepth; // max. indentation/recursion level	130	U32 maxdepth; // max. indentation/recursion level
99	} enc_t;	131	} enc_t;
100		132
101	static void	133	inline void
102	need (enc_t *enc, STRLEN len)	134	need (enc_t *enc, STRLEN len)
103	{	135	{
104	if (enc->cur + len >= enc->end)	136	if (expect_false (enc->cur + len >= enc->end))
105	{	137	{
106	STRLEN cur = enc->cur - SvPVX (enc->sv);	138	STRLEN cur = enc->cur - SvPVX (enc->sv);
107	SvGROW (enc->sv, cur + len + 1);	139	SvGROW (enc->sv, cur + len + 1);
108	enc->cur = SvPVX (enc->sv) + cur;	140	enc->cur = SvPVX (enc->sv) + cur;
109	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv);	141	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
110	}	142	}
111	}	143	}
112		144
113	static void	145	inline void
114	encode_ch (enc_t *enc, char ch)	146	encode_ch (enc_t *enc, char ch)
115	{	147	{
116	need (enc, 1);	148	need (enc, 1);
117	*enc->cur++ = ch;	149	*enc->cur++ = ch;
118	}	150	}
…		…
126		158
127	while (str < end)	159	while (str < end)
128	{	160	{
129	unsigned char ch = (unsigned char )str;	161	unsigned char ch = (unsigned char )str;
130		162
131	if (ch >= 0x20 && ch < 0x80) // most common case	163	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
132	{	164	{
133	if (ch == '"') // but with slow exceptions	165	if (expect_false (ch == '"')) // but with slow exceptions
134	{	166	{
135	need (enc, len += 1);	167	need (enc, len += 1);
136	*enc->cur++ = '\\';	168	*enc->cur++ = '\\';
137	*enc->cur++ = '"';	169	*enc->cur++ = '"';
138	}	170	}
139	else if (ch == '\\')	171	else if (expect_false (ch == '\\'))
140	{	172	{
141	need (enc, len += 1);	173	need (enc, len += 1);
142	*enc->cur++ = '\\';	174	*enc->cur++ = '\\';
143	*enc->cur++ = '\\';	175	*enc->cur++ = '\\';
144	}	176	}
…		…
162	STRLEN clen;	194	STRLEN clen;
163	UV uch;	195	UV uch;
164		196
165	if (is_utf8)	197	if (is_utf8)
166	{	198	{
167	//uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
168	uch = decode_utf8 (str, end - str, &clen);	199	uch = decode_utf8 (str, end - str, &clen);
169	if (clen == (STRLEN)-1)	200	if (clen == (STRLEN)-1)
170	croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);	201	croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);
171	}	202	}
172	else	203	else
…		…
176	}	207	}
177		208
178	if (uch > 0x10FFFFUL)	209	if (uch > 0x10FFFFUL)
179	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);	210	croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
180		211
181	if (uch < 0x80 \|\| enc->flags & F_ASCII)	212	if (uch < 0x80 \|\| enc->json.flags & F_ASCII \|\| (enc->json.flags & F_LATIN1 && uch > 0xFF))
182	{	213	{
183	if (uch > 0xFFFFUL)	214	if (uch > 0xFFFFUL)
184	{	215	{
185	need (enc, len += 11);	216	need (enc, len += 11);
186	sprintf (enc->cur, "\\u%04x\\u%04x",	217	sprintf (enc->cur, "\\u%04x\\u%04x",
…		…
200	*enc->cur++ = hexdigit [(uch >> 0) & 15];	231	*enc->cur++ = hexdigit [(uch >> 0) & 15];
201	}	232	}
202		233
203	str += clen;	234	str += clen;
204	}	235	}
		236	else if (enc->json.flags & F_LATIN1)
		237	{
		238	*enc->cur++ = uch;
		239	str += clen;
		240	}
205	else if (is_utf8)	241	else if (is_utf8)
206	{	242	{
207	need (enc, len += clen);	243	need (enc, len += clen);
208	do	244	do
209	{	245	{
…		…
211	}	247	}
212	while (--clen);	248	while (--clen);
213	}	249	}
214	else	250	else
215	{	251	{
216	need (enc, len += UTF8_MAX_LEN - 1); // never more than 11 bytes needed	252	need (enc, len += UTF8_MAXBYTES - 1); // never more than 11 bytes needed
217	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);	253	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
218	++str;	254	++str;
219	}	255	}
220	}	256	}
221	}	257	}
…		…
223		259
224	--len;	260	--len;
225	}	261	}
226	}	262	}
227		263
228	static void	264	inline void
229	encode_indent (enc_t *enc)	265	encode_indent (enc_t *enc)
230	{	266	{
231	if (enc->flags & F_INDENT)	267	if (enc->json.flags & F_INDENT)
232	{	268	{
233	int spaces = enc->indent * INDENT_STEP;	269	int spaces = enc->indent * INDENT_STEP;
234		270
235	need (enc, spaces);	271	need (enc, spaces);
236	memset (enc->cur, ' ', spaces);	272	memset (enc->cur, ' ', spaces);
237	enc->cur += spaces;	273	enc->cur += spaces;
238	}	274	}
239	}	275	}
240		276
241	static void	277	inline void
242	encode_space (enc_t *enc)	278	encode_space (enc_t *enc)
243	{	279	{
244	need (enc, 1);	280	need (enc, 1);
245	encode_ch (enc, ' ');	281	encode_ch (enc, ' ');
246	}	282	}
247		283
248	static void	284	inline void
249	encode_nl (enc_t *enc)	285	encode_nl (enc_t *enc)
250	{	286	{
251	if (enc->flags & F_INDENT)	287	if (enc->json.flags & F_INDENT)
252	{	288	{
253	need (enc, 1);	289	need (enc, 1);
254	encode_ch (enc, '\n');	290	encode_ch (enc, '\n');
255	}	291	}
256	}	292	}
257		293
258	static void	294	inline void
259	encode_comma (enc_t *enc)	295	encode_comma (enc_t *enc)
260	{	296	{
261	encode_ch (enc, ',');	297	encode_ch (enc, ',');
262		298
263	if (enc->flags & F_INDENT)	299	if (enc->json.flags & F_INDENT)
264	encode_nl (enc);	300	encode_nl (enc);
265	else if (enc->flags & F_SPACE_AFTER)	301	else if (enc->json.flags & F_SPACE_AFTER)
266	encode_space (enc);	302	encode_space (enc);
267	}	303	}
268		304
269	static void encode_sv (enc_t enc, SV sv);	305	static void encode_sv (enc_t enc, SV sv);
270		306
…		…
279	encode_ch (enc, '['); encode_nl (enc);	315	encode_ch (enc, '['); encode_nl (enc);
280	++enc->indent;	316	++enc->indent;
281		317
282	for (i = 0; i <= len; ++i)	318	for (i = 0; i <= len; ++i)
283	{	319	{
		320	SV **svp = av_fetch (av, i, 0);
		321
284	encode_indent (enc);	322	encode_indent (enc);
285	encode_sv (enc, *av_fetch (av, i, 0));	323
		324	if (svp)
		325	encode_sv (enc, *svp);
		326	else
		327	encode_str (enc, "null", 4, 0);
286		328
287	if (i < len)	329	if (i < len)
288	encode_comma (enc);	330	encode_comma (enc);
289	}	331	}
290		332
…		…
313	else	355	else
314	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	356	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
315		357
316	encode_ch (enc, '"');	358	encode_ch (enc, '"');
317		359
318	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);	360	if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc);
319	encode_ch (enc, ':');	361	encode_ch (enc, ':');
320	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);	362	if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc);
321	encode_sv (enc, HeVAL (he));	363	encode_sv (enc, HeVAL (he));
322	}	364	}
323		365
324	// compare hash entries, used when all keys are bytestrings	366	// compare hash entries, used when all keys are bytestrings
325	static int	367	static int
…		…
360	{	402	{
361	// for canonical output we have to sort by keys first	403	// for canonical output we have to sort by keys first
362	// actually, this is mostly due to the stupid so-called	404	// actually, this is mostly due to the stupid so-called
363	// security workaround added somewhere in 5.8.x.	405	// security workaround added somewhere in 5.8.x.
364	// that randomises hash orderings	406	// that randomises hash orderings
365	if (enc->flags & F_CANONICAL)	407	if (enc->json.flags & F_CANONICAL)
366	{	408	{
367	HE he, hes [count]; // if your compiler dies here, you need to enable C99 mode
368	int fast = 1;	409	int fast = 1;
		410	HE *he;
		411	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
		412	HE *hes = _alloca (count sizeof (HE));
		413	#else
		414	HE *hes [count]; // if your compiler dies here, you need to enable C99 mode
		415	#endif
369		416
370	i = 0;	417	i = 0;
371	while ((he = hv_iternext (hv)))	418	while ((he = hv_iternext (hv)))
372	{	419	{
373	hes [i++] = he;	420	hes [i++] = he;
…		…
437	svtype svt;	484	svtype svt;
438		485
439	SvGETMAGIC (sv);	486	SvGETMAGIC (sv);
440	svt = SvTYPE (sv);	487	svt = SvTYPE (sv);
441		488
		489	if (expect_false (SvOBJECT (sv)))
		490	{
		491	HV *stash = !JSON_SLOW \|\| json_boolean_stash
		492	? json_boolean_stash
		493	: gv_stashpv ("JSON::XS::Boolean", 1);
		494
		495	if (SvSTASH (sv) == stash)
		496	{
		497	if (SvIV (sv))
		498	encode_str (enc, "true", 4, 0);
		499	else
		500	encode_str (enc, "false", 5, 0);
		501	}
		502	else
		503	{
		504	#if 0
		505	if (0 && sv_derived_from (rv, "JSON::Literal"))
		506	{
		507	// not yet
		508	}
		509	#endif
		510	if (enc->json.flags & F_CONV_BLESSED)
		511	{
		512	// we re-bless the reference to get overload and other niceties right
		513	GV *to_json = gv_fetchmethod_autoload (SvSTASH (sv), "TO_JSON", 0);
		514
		515	if (to_json)
		516	{
		517	dSP;
		518
		519	ENTER; SAVETMPS; PUSHMARK (SP);
		520	XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv)));
		521
		522	// calling with G_SCALAR ensures that we always get a 1 return value
		523	PUTBACK;
		524	call_sv ((SV *)GvCV (to_json), G_SCALAR);
		525	SPAGAIN;
		526
		527	// catch this surprisingly common error
		528	if (SvROK (TOPs) && SvRV (TOPs) == sv)
		529	croak ("%s::TO_JSON method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv)));
		530
		531	sv = POPs;
		532	PUTBACK;
		533
		534	encode_sv (enc, sv);
		535
		536	FREETMPS; LEAVE;
		537	}
		538	else if (enc->json.flags & F_ALLOW_BLESSED)
		539	encode_str (enc, "null", 4, 0);
		540	else
		541	croak ("encountered object '%s', but neither allow_blessed enabled nor TO_JSON method available on it",
		542	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		543	}
		544	else if (enc->json.flags & F_ALLOW_BLESSED)
		545	encode_str (enc, "null", 4, 0);
		546	else
		547	croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled",
		548	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
		549	}
		550	}
442	if (svt == SVt_PVHV)	551	else if (svt == SVt_PVHV)
443	encode_hv (enc, (HV *)sv);	552	encode_hv (enc, (HV *)sv);
444	else if (svt == SVt_PVAV)	553	else if (svt == SVt_PVAV)
445	encode_av (enc, (AV *)sv);	554	encode_av (enc, (AV *)sv);
446	else if (svt < SVt_PVAV)	555	else if (svt < SVt_PVAV)
447	{	556	{
448	if (SvNIOK (sv) && SvIV (sv) == 0)	557	STRLEN len = 0;
		558	char *pv = svt ? SvPV (sv, len) : 0;
		559
		560	if (len == 1 && *pv == '1')
		561	encode_str (enc, "true", 4, 0);
		562	else if (len == 1 && *pv == '0')
449	encode_str (enc, "false", 5, 0);	563	encode_str (enc, "false", 5, 0);
450	else if (SvNIOK (sv) && SvIV (sv) == 1)
451	encode_str (enc, "true", 4, 0);
452	else	564	else
453	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",	565	croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
454	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	566	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
455	}	567	}
456	else	568	else
…		…
471	encode_str (enc, str, len, SvUTF8 (sv));	583	encode_str (enc, str, len, SvUTF8 (sv));
472	encode_ch (enc, '"');	584	encode_ch (enc, '"');
473	}	585	}
474	else if (SvNOKp (sv))	586	else if (SvNOKp (sv))
475	{	587	{
		588	// trust that perl will do the right thing w.r.t. JSON syntax.
476	need (enc, NV_DIG + 32);	589	need (enc, NV_DIG + 32);
477	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);	590	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);
478	enc->cur += strlen (enc->cur);	591	enc->cur += strlen (enc->cur);
479	}	592	}
480	else if (SvIOKp (sv))	593	else if (SvIOKp (sv))
481	{	594	{
482	need (enc, 64);	595	// we assume we can always read an IV as a UV
		596	if (SvUV (sv) & ~(UV)0x7fff)
		597	{
		598	// large integer, use the (rather slow) snprintf way.
		599	need (enc, sizeof (UV) * 3);
483	enc->cur +=	600	enc->cur +=
484	SvIsUV(sv)	601	SvIsUV(sv)
485	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))	602	? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv))
486	: snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));	603	: snprintf (enc->cur, sizeof (UV) * 3, "%"IVdf, (IV)SvIVX (sv));
		604	}
		605	else
		606	{
		607	// optimise the "small number case"
		608	// code will likely be branchless and use only a single multiplication
		609	I32 i = SvIV (sv);
		610	U32 u;
		611	char digit, nz = 0;
		612
		613	need (enc, 6);
		614
		615	*enc->cur = '-'; enc->cur += i < 0 ? 1 : 0;
		616	u = i < 0 ? -i : i;
		617
		618	// convert to 4.28 fixed-point representation
		619	u = u * ((0xfffffff + 10000) / 10000); // 10**5, 5 fractional digits
		620
		621	// now output digit by digit, each time masking out the integer part
		622	// and multiplying by 5 while moving the decimal point one to the right,
		623	// resulting in a net multiplication by 10.
		624	// we always write the digit to memory but conditionally increment
		625	// the pointer, to ease the usage of conditional move instructions.
		626	digit = u >> 28; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0xfffffff) 5;
		627	digit = u >> 27; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x7ffffff) 5;
		628	digit = u >> 26; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x3ffffff) 5;
		629	digit = u >> 25; enc->cur = digit + '0'; enc->cur += (nz = nz \|\| digit); u = (u & 0x1ffffff) 5;
		630	digit = u >> 24; *enc->cur = digit + '0'; enc->cur += 1; // correctly generate '0'
		631	}
487	}	632	}
488	else if (SvROK (sv))	633	else if (SvROK (sv))
489	encode_rv (enc, SvRV (sv));	634	encode_rv (enc, SvRV (sv));
490	else if (!SvOK (sv))	635	else if (!SvOK (sv))
491	encode_str (enc, "null", 4, 0);	636	encode_str (enc, "null", 4, 0);
…		…
493	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",	638	croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
494	SvPV_nolen (sv), SvFLAGS (sv));	639	SvPV_nolen (sv), SvFLAGS (sv));
495	}	640	}
496		641
497	static SV *	642	static SV *
498	encode_json (SV *scalar, U32 flags)	643	encode_json (SV scalar, JSON json)
499	{	644	{
500	enc_t enc;	645	enc_t enc;
501		646
502	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))	647	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))
503	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");	648	croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
504		649
505	enc.flags = flags;	650	enc.json = *json;
506	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	651	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
507	enc.cur = SvPVX (enc.sv);	652	enc.cur = SvPVX (enc.sv);
508	enc.end = SvEND (enc.sv);	653	enc.end = SvEND (enc.sv);
509	enc.indent = 0;	654	enc.indent = 0;
510	enc.maxdepth = DEC_DEPTH (flags);	655	enc.maxdepth = DEC_DEPTH (enc.json.flags);
511		656
512	SvPOK_only (enc.sv);	657	SvPOK_only (enc.sv);
513	encode_sv (&enc, scalar);	658	encode_sv (&enc, scalar);
514		659
		660	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
		661	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
		662
515	if (!(flags & (F_ASCII \| F_UTF8)))	663	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
516	SvUTF8_on (enc.sv);	664	SvUTF8_on (enc.sv);
517		665
518	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
519
520	if (enc.flags & F_SHRINK)	666	if (enc.json.flags & F_SHRINK)
521	shrink (enc.sv);	667	shrink (enc.sv);
522		668
523	return enc.sv;	669	return enc.sv;
524	}	670	}
525		671
…		…
530	typedef struct	676	typedef struct
531	{	677	{
532	char *cur; // current parser pointer	678	char *cur; // current parser pointer
533	char *end; // end of input string	679	char *end; // end of input string
534	const char *err; // parse error, if != 0	680	const char *err; // parse error, if != 0
535	U32 flags; // F_*	681	JSON json;
536	U32 depth; // recursion depth	682	U32 depth; // recursion depth
537	U32 maxdepth; // recursion depth limit	683	U32 maxdepth; // recursion depth limit
538	} dec_t;	684	} dec_t;
539		685
540	static void	686	inline void
541	decode_ws (dec_t *dec)	687	decode_ws (dec_t *dec)
542	{	688	{
543	for (;;)	689	for (;;)
544	{	690	{
545	char ch = *dec->cur;	691	char ch = *dec->cur;
…		…
571	decode_4hex (dec_t *dec)	717	decode_4hex (dec_t *dec)
572	{	718	{
573	signed char d1, d2, d3, d4;	719	signed char d1, d2, d3, d4;
574	unsigned char cur = (unsigned char )dec->cur;	720	unsigned char cur = (unsigned char )dec->cur;
575		721
576	d1 = decode_hexdigit [cur [0]]; if (d1 < 0) ERR ("four hexadecimal digits expected");	722	d1 = decode_hexdigit [cur [0]]; if (expect_false (d1 < 0)) ERR ("exactly four hexadecimal digits expected");
577	d2 = decode_hexdigit [cur [1]]; if (d2 < 0) ERR ("four hexadecimal digits expected");	723	d2 = decode_hexdigit [cur [1]]; if (expect_false (d2 < 0)) ERR ("exactly four hexadecimal digits expected");
578	d3 = decode_hexdigit [cur [2]]; if (d3 < 0) ERR ("four hexadecimal digits expected");	724	d3 = decode_hexdigit [cur [2]]; if (expect_false (d3 < 0)) ERR ("exactly four hexadecimal digits expected");
579	d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected");	725	d4 = decode_hexdigit [cur [3]]; if (expect_false (d4 < 0)) ERR ("exactly four hexadecimal digits expected");
580		726
581	dec->cur += 4;	727	dec->cur += 4;
582		728
583	return ((UV)d1) << 12	729	return ((UV)d1) << 12
584	\| ((UV)d2) << 8	730	\| ((UV)d2) << 8
…		…
592	static SV *	738	static SV *
593	decode_str (dec_t *dec)	739	decode_str (dec_t *dec)
594	{	740	{
595	SV *sv = 0;	741	SV *sv = 0;
596	int utf8 = 0;	742	int utf8 = 0;
		743	char *dec_cur = dec->cur;
597		744
598	do	745	do
599	{	746	{
600	char buf [SHORT_STRING_LEN + UTF8_MAX_LEN];	747	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];
601	char *cur = buf;	748	char *cur = buf;
602		749
603	do	750	do
604	{	751	{
605	unsigned char ch = (unsigned char )dec->cur++;	752	unsigned char ch = (unsigned char )dec_cur++;
606		753
607	if (ch == '"')	754	if (expect_false (ch == '"'))
608	{	755	{
609	--dec->cur;	756	--dec_cur;
610	break;	757	break;
611	}	758	}
612	else if (ch == '\\')	759	else if (expect_false (ch == '\\'))
613	{	760	{
614	switch (*dec->cur)	761	switch (*dec_cur)
615	{	762	{
616	case '\\':	763	case '\\':
617	case '/':	764	case '/':
618	case '"': cur++ = dec->cur++; break;	765	case '"': cur++ = dec_cur++; break;
619		766
620	case 'b': ++dec->cur; *cur++ = '\010'; break;	767	case 'b': ++dec_cur; *cur++ = '\010'; break;
621	case 't': ++dec->cur; *cur++ = '\011'; break;	768	case 't': ++dec_cur; *cur++ = '\011'; break;
622	case 'n': ++dec->cur; *cur++ = '\012'; break;	769	case 'n': ++dec_cur; *cur++ = '\012'; break;
623	case 'f': ++dec->cur; *cur++ = '\014'; break;	770	case 'f': ++dec_cur; *cur++ = '\014'; break;
624	case 'r': ++dec->cur; *cur++ = '\015'; break;	771	case 'r': ++dec_cur; *cur++ = '\015'; break;
625		772
626	case 'u':	773	case 'u':
627	{	774	{
628	UV lo, hi;	775	UV lo, hi;
629	++dec->cur;	776	++dec_cur;
630		777
		778	dec->cur = dec_cur;
631	hi = decode_4hex (dec);	779	hi = decode_4hex (dec);
		780	dec_cur = dec->cur;
632	if (hi == (UV)-1)	781	if (hi == (UV)-1)
633	goto fail;	782	goto fail;
634		783
635	// possibly a surrogate pair	784	// possibly a surrogate pair
636	if (hi >= 0xd800)	785	if (hi >= 0xd800)
637	if (hi < 0xdc00)	786	if (hi < 0xdc00)
638	{	787	{
639	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')	788	if (dec_cur [0] != '\\' \|\| dec_cur [1] != 'u')
640	ERR ("missing low surrogate character in surrogate pair");	789	ERR ("missing low surrogate character in surrogate pair");
641		790
642	dec->cur += 2;	791	dec_cur += 2;
643		792
		793	dec->cur = dec_cur;
644	lo = decode_4hex (dec);	794	lo = decode_4hex (dec);
		795	dec_cur = dec->cur;
645	if (lo == (UV)-1)	796	if (lo == (UV)-1)
646	goto fail;	797	goto fail;
647		798
648	if (lo < 0xdc00 \|\| lo >= 0xe000)	799	if (lo < 0xdc00 \|\| lo >= 0xe000)
649	ERR ("surrogate pair expected");	800	ERR ("surrogate pair expected");
…		…
663	*cur++ = hi;	814	*cur++ = hi;
664	}	815	}
665	break;	816	break;
666		817
667	default:	818	default:
668	--dec->cur;	819	--dec_cur;
669	ERR ("illegal backslash escape sequence in string");	820	ERR ("illegal backslash escape sequence in string");
670	}	821	}
671	}	822	}
672	else if (ch >= 0x20 && ch <= 0x7f)	823	else if (expect_true (ch >= 0x20 && ch <= 0x7f))
673	*cur++ = ch;	824	*cur++ = ch;
674	else if (ch >= 0x80)	825	else if (ch >= 0x80)
675	{	826	{
676	STRLEN clen;	827	STRLEN clen;
677	UV uch;	828	UV uch;
678		829
679	--dec->cur;	830	--dec_cur;
680		831
681	uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen);	832	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
682	if (clen == (STRLEN)-1)	833	if (clen == (STRLEN)-1)
683	ERR ("malformed UTF-8 character in JSON string");	834	ERR ("malformed UTF-8 character in JSON string");
684		835
685	do	836	do
686	cur++ = dec->cur++;	837	cur++ = dec_cur++;
687	while (--clen);	838	while (--clen);
688		839
689	utf8 = 1;	840	utf8 = 1;
690	}	841	}
691	else	842	else
692	{	843	{
693	--dec->cur;	844	--dec_cur;
694		845
695	if (!ch)	846	if (!ch)
696	ERR ("unexpected end of string while parsing JSON string");	847	ERR ("unexpected end of string while parsing JSON string");
697	else	848	else
698	ERR ("invalid character encountered while parsing JSON string");	849	ERR ("invalid character encountered while parsing JSON string");
…		…
711	}	862	}
712	else	863	else
713	sv = newSVpvn (buf, len);	864	sv = newSVpvn (buf, len);
714	}	865	}
715	}	866	}
716	while (*dec->cur != '"');	867	while (*dec_cur != '"');
717		868
718	++dec->cur;	869	++dec_cur;
719		870
720	if (sv)	871	if (sv)
721	{	872	{
722	SvPOK_only (sv);	873	SvPOK_only (sv);
723	*SvEND (sv) = 0;	874	*SvEND (sv) = 0;
…		…
726	SvUTF8_on (sv);	877	SvUTF8_on (sv);
727	}	878	}
728	else	879	else
729	sv = newSVpvn ("", 0);	880	sv = newSVpvn ("", 0);
730		881
		882	dec->cur = dec_cur;
731	return sv;	883	return sv;
732		884
733	fail:	885	fail:
		886	dec->cur = dec_cur;
734	return 0;	887	return 0;
735	}	888	}
736		889
737	static SV *	890	static SV *
738	decode_num (dec_t *dec)	891	decode_num (dec_t *dec)
…		…
796	is_nv = 1;	949	is_nv = 1;
797	}	950	}
798		951
799	if (!is_nv)	952	if (!is_nv)
800	{	953	{
801	UV uv;	954	int len = dec->cur - start;
802	int numtype = grok_number (start, dec->cur - start, &uv);	955
803	if (numtype & IS_NUMBER_IN_UV)	956	// special case the rather common 1..4-digit-int case, assumes 32 bit ints or so
804	if (numtype & IS_NUMBER_NEG)	957	if (*start == '-')
		958	switch (len)
805	{	959	{
806	if (uv < (UV)IV_MIN)	960	case 2: return newSViv (-( start [1] - '0' * 1));
807	return newSViv (-(IV)uv);	961	case 3: return newSViv (-( start [1] * 10 + start [2] - '0' * 11));
		962	case 4: return newSViv (-( start [1] * 100 + start [2] * 10 + start [3] - '0' * 111));
		963	case 5: return newSViv (-(start [1] * 1000 + start [2] * 100 + start [3] * 10 + start [4] - '0' * 1111));
808	}	964	}
		965	else
		966	switch (len)
		967	{
		968	case 1: return newSViv ( start [0] - '0' * 1);
		969	case 2: return newSViv ( start [0] * 10 + start [1] - '0' * 11);
		970	case 3: return newSViv ( start [0] * 100 + start [1] * 10 + start [2] - '0' * 111);
		971	case 4: return newSViv ( start [0] * 1000 + start [1] * 100 + start [2] * 10 + start [3] - '0' * 1111);
		972	}
		973
		974	{
		975	UV uv;
		976	int numtype = grok_number (start, len, &uv);
		977	if (numtype & IS_NUMBER_IN_UV)
		978	if (numtype & IS_NUMBER_NEG)
		979	{
		980	if (uv < (UV)IV_MIN)
		981	return newSViv (-(IV)uv);
		982	}
809	else	983	else
810	return newSVuv (uv);	984	return newSVuv (uv);
811	}	985	}
812		986
		987	len -= *start == '-' ? 1 : 0;
		988
		989	// does not fit into IV or UV, try NV
		990	if ((sizeof (NV) == sizeof (double) && DBL_DIG >= len)
		991	#if defined (LDBL_DIG)
		992	\|\| (sizeof (NV) == sizeof (long double) && LDBL_DIG >= len)
		993	#endif
		994	)
		995	// fits into NV without loss of precision
		996	return newSVnv (Atof (start));
		997
		998	// everything else fails, convert it to a string
		999	return newSVpvn (start, dec->cur - start);
		1000	}
		1001
		1002	// loss of precision here
813	return newSVnv (Atof (start));	1003	return newSVnv (Atof (start));
814		1004
815	fail:	1005	fail:
816	return 0;	1006	return 0;
817	}	1007	}
…		…
861	}	1051	}
862		1052
863	static SV *	1053	static SV *
864	decode_hv (dec_t *dec)	1054	decode_hv (dec_t *dec)
865	{	1055	{
		1056	SV *sv;
866	HV *hv = newHV ();	1057	HV *hv = newHV ();
867		1058
868	DEC_INC_DEPTH;	1059	DEC_INC_DEPTH;
869	decode_ws (dec);	1060	decode_ws (dec);
870		1061
871	if (*dec->cur == '}')	1062	if (*dec->cur == '}')
872	++dec->cur;	1063	++dec->cur;
873	else	1064	else
874	for (;;)	1065	for (;;)
875	{	1066	{
876	SV key, value;
877
878	decode_ws (dec); EXPECT_CH ('"');	1067	decode_ws (dec); EXPECT_CH ('"');
879		1068
880	key = decode_str (dec);	1069	// heuristic: assume that
881	if (!key)	1070	// a) decode_str + hv_store_ent are abysmally slow.
882	goto fail;	1071	// b) most hash keys are short, simple ascii text.
		1072	// => try to "fast-match" such strings to avoid
		1073	// the overhead of decode_str + hv_store_ent.
		1074	{
		1075	SV *value;
		1076	char *p = dec->cur;
		1077	char *e = p + 24; // only try up to 24 bytes
883		1078
884	decode_ws (dec); EXPECT_CH (':');	1079	for (;;)
885
886	value = decode_sv (dec);
887	if (!value)
888	{	1080	{
		1081	// the >= 0x80 is true on most architectures
		1082	if (p == e \|\| p < 0x20 \|\| p >= 0x80 \|\| *p == '\\')
		1083	{
		1084	// slow path, back up and use decode_str
		1085	SV *key = decode_str (dec);
		1086	if (!key)
		1087	goto fail;
		1088
		1089	decode_ws (dec); EXPECT_CH (':');
		1090
		1091	value = decode_sv (dec);
		1092	if (!value)
		1093	{
		1094	SvREFCNT_dec (key);
		1095	goto fail;
		1096	}
		1097
		1098	hv_store_ent (hv, key, value, 0);
889	SvREFCNT_dec (key);	1099	SvREFCNT_dec (key);
		1100
		1101	break;
		1102	}
		1103	else if (*p == '"')
		1104	{
		1105	// fast path, got a simple key
		1106	char *key = dec->cur;
		1107	int len = p - key;
		1108	dec->cur = p + 1;
		1109
		1110	decode_ws (dec); EXPECT_CH (':');
		1111
		1112	value = decode_sv (dec);
		1113	if (!value)
890	goto fail;	1114	goto fail;
		1115
		1116	hv_store (hv, key, len, value, 0);
		1117
		1118	break;
		1119	}
		1120
		1121	++p;
891	}	1122	}
892		1123	}
893	hv_store_ent (hv, key, value, 0);
894	SvREFCNT_dec (key);
895		1124
896	decode_ws (dec);	1125	decode_ws (dec);
897		1126
898	if (*dec->cur == '}')	1127	if (*dec->cur == '}')
899	{	1128	{
…		…
906		1135
907	++dec->cur;	1136	++dec->cur;
908	}	1137	}
909		1138
910	DEC_DEC_DEPTH;	1139	DEC_DEC_DEPTH;
911	return newRV_noinc ((SV *)hv);	1140	sv = newRV_noinc ((SV *)hv);
		1141
		1142	// check filter callbacks
		1143	if (dec->json.flags & F_HOOK)
		1144	{
		1145	if (dec->json.cb_sk_object && HvKEYS (hv) == 1)
		1146	{
		1147	HE cb, he;
		1148
		1149	hv_iterinit (hv);
		1150	he = hv_iternext (hv);
		1151	hv_iterinit (hv);
		1152
		1153	// the next line creates a mortal sv each time its called.
		1154	// might want to optimise this for common cases.
		1155	cb = hv_fetch_ent (dec->json.cb_sk_object, hv_iterkeysv (he), 0, 0);
		1156
		1157	if (cb)
		1158	{
		1159	dSP;
		1160	int count;
		1161
		1162	ENTER; SAVETMPS; PUSHMARK (SP);
		1163	XPUSHs (HeVAL (he));
		1164
		1165	PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN;
		1166
		1167	if (count == 1)
		1168	{
		1169	sv = newSVsv (POPs);
		1170	FREETMPS; LEAVE;
		1171	return sv;
		1172	}
		1173
		1174	FREETMPS; LEAVE;
		1175	}
		1176	}
		1177
		1178	if (dec->json.cb_object)
		1179	{
		1180	dSP;
		1181	int count;
		1182
		1183	ENTER; SAVETMPS; PUSHMARK (SP);
		1184	XPUSHs (sv_2mortal (sv));
		1185
		1186	PUTBACK; count = call_sv (dec->json.cb_object, G_ARRAY); SPAGAIN;
		1187
		1188	if (count == 1)
		1189	{
		1190	sv = newSVsv (POPs);
		1191	FREETMPS; LEAVE;
		1192	return sv;
		1193	}
		1194
		1195	SvREFCNT_inc (sv);
		1196	FREETMPS; LEAVE;
		1197	}
		1198	}
		1199
		1200	return sv;
912		1201
913	fail:	1202	fail:
914	SvREFCNT_dec (hv);	1203	SvREFCNT_dec (hv);
915	DEC_DEC_DEPTH;	1204	DEC_DEC_DEPTH;
916	return 0;	1205	return 0;
…		…
918		1207
919	static SV *	1208	static SV *
920	decode_sv (dec_t *dec)	1209	decode_sv (dec_t *dec)
921	{	1210	{
922	decode_ws (dec);	1211	decode_ws (dec);
		1212
		1213	// the beauty of JSON: you need exactly one character lookahead
		1214	// to parse anything.
923	switch (*dec->cur)	1215	switch (*dec->cur)
924	{	1216	{
925	case '"': ++dec->cur; return decode_str (dec);	1217	case '"': ++dec->cur; return decode_str (dec);
926	case '[': ++dec->cur; return decode_av (dec);	1218	case '[': ++dec->cur; return decode_av (dec);
927	case '{': ++dec->cur; return decode_hv (dec);	1219	case '{': ++dec->cur; return decode_hv (dec);
…		…
933		1225
934	case 't':	1226	case 't':
935	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1227	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
936	{	1228	{
937	dec->cur += 4;	1229	dec->cur += 4;
938	return newSViv (1);	1230	return SvREFCNT_inc (json_true);
939	}	1231	}
940	else	1232	else
941	ERR ("'true' expected");	1233	ERR ("'true' expected");
942		1234
943	break;	1235	break;
944		1236
945	case 'f':	1237	case 'f':
946	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1238	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
947	{	1239	{
948	dec->cur += 5;	1240	dec->cur += 5;
949	return newSViv (0);	1241	return SvREFCNT_inc (json_false);
950	}	1242	}
951	else	1243	else
952	ERR ("'false' expected");	1244	ERR ("'false' expected");
953		1245
954	break;	1246	break;
…		…
972	fail:	1264	fail:
973	return 0;	1265	return 0;
974	}	1266	}
975		1267
976	static SV *	1268	static SV *
977	decode_json (SV *string, U32 flags)	1269	decode_json (SV string, JSON json, UV *offset_return)
978	{	1270	{
979	dec_t dec;	1271	dec_t dec;
		1272	UV offset;
980	SV *sv;	1273	SV *sv;
981		1274
		1275	SvGETMAGIC (string);
982	SvUPGRADE (string, SVt_PV);	1276	SvUPGRADE (string, SVt_PV);
983		1277
		1278	if (json->flags & F_MAXSIZE && SvCUR (string) > DEC_SIZE (json->flags))
		1279	croak ("attempted decode of JSON text of %lu bytes size, but max_size is set to %lu",
		1280	(unsigned long)SvCUR (string), (unsigned long)DEC_SIZE (json->flags));
		1281
984	if (flags & F_UTF8)	1282	if (json->flags & F_UTF8)
985	sv_utf8_downgrade (string, 0);	1283	sv_utf8_downgrade (string, 0);
986	else	1284	else
987	sv_utf8_upgrade (string);	1285	sv_utf8_upgrade (string);
988		1286
989	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1287	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
990		1288
991	dec.flags = flags;	1289	dec.json = *json;
992	dec.cur = SvPVX (string);	1290	dec.cur = SvPVX (string);
993	dec.end = SvEND (string);	1291	dec.end = SvEND (string);
994	dec.err = 0;	1292	dec.err = 0;
995	dec.depth = 0;	1293	dec.depth = 0;
996	dec.maxdepth = DEC_DEPTH (dec.flags);	1294	dec.maxdepth = DEC_DEPTH (dec.json.flags);
997		1295
		1296	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
		1297	dec.json.flags \|= F_HOOK;
		1298
998	*dec.end = 0; // this should basically be a nop, too, but make sure its there	1299	*dec.end = 0; // this should basically be a nop, too, but make sure it's there
999	sv = decode_sv (&dec);	1300	sv = decode_sv (&dec);
1000		1301
		1302	if (!(offset_return \|\| !sv))
		1303	{
		1304	// check for trailing garbage
		1305	decode_ws (&dec);
		1306
		1307	if (*dec.cur)
		1308	{
		1309	dec.err = "garbage after JSON object";
		1310	SvREFCNT_dec (sv);
		1311	sv = 0;
		1312	}
		1313	}
		1314
		1315	if (offset_return \|\| !sv)
		1316	{
		1317	offset = dec.json.flags & F_UTF8
		1318	? dec.cur - SvPVX (string)
		1319	: utf8_distance (dec.cur, SvPVX (string));
		1320
		1321	if (offset_return)
		1322	*offset_return = offset;
		1323	}
		1324
1001	if (!sv)	1325	if (!sv)
1002	{	1326	{
1003	IV offset = dec.flags & F_UTF8
1004	? dec.cur - SvPVX (string)
1005	: utf8_distance (dec.cur, SvPVX (string));
1006	SV *uni = sv_newmortal ();	1327	SV *uni = sv_newmortal ();
1007		1328
1008	// horrible hack to silence warning inside pv_uni_display	1329	// horrible hack to silence warning inside pv_uni_display
1009	COP cop = *PL_curcop;	1330	COP cop = *PL_curcop;
1010	cop.cop_warnings = pWARN_NONE;	1331	cop.cop_warnings = pWARN_NONE;
…		…
1020	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1341	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1021	}	1342	}
1022		1343
1023	sv = sv_2mortal (sv);	1344	sv = sv_2mortal (sv);
1024		1345
1025	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))	1346	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))
1026	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");	1347	croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1027		1348
1028	return sv;	1349	return sv;
1029	}	1350	}
1030		1351
…		…
1034	MODULE = JSON::XS PACKAGE = JSON::XS	1355	MODULE = JSON::XS PACKAGE = JSON::XS
1035		1356
1036	BOOT:	1357	BOOT:
1037	{	1358	{
1038	int i;	1359	int i;
1039
1040	memset (decode_hexdigit, 0xff, 256);
1041		1360
1042	for (i = 0; i < 256; ++i)	1361	for (i = 0; i < 256; ++i)
1043	decode_hexdigit [i] =	1362	decode_hexdigit [i] =
1044	i >= '0' && i <= '9' ? i - '0'	1363	i >= '0' && i <= '9' ? i - '0'
1045	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1364	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1046	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1365	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1047	: -1;	1366	: -1;
1048		1367
1049	json_stash = gv_stashpv ("JSON::XS", 1);	1368	json_stash = gv_stashpv ("JSON::XS" , 1);
		1369	json_boolean_stash = gv_stashpv ("JSON::XS::Boolean", 1);
		1370
		1371	json_true = get_sv ("JSON::XS::true" , 1); SvREADONLY_on (json_true );
		1372	json_false = get_sv ("JSON::XS::false", 1); SvREADONLY_on (json_false);
1050	}	1373	}
1051		1374
1052	PROTOTYPES: DISABLE	1375	PROTOTYPES: DISABLE
1053		1376
1054	SV new (char dummy)	1377	void CLONE (...)
1055	CODE:	1378	CODE:
1056	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);	1379	json_stash = 0;
1057	OUTPUT:	1380	json_boolean_stash = 0;
1058	RETVAL
1059		1381
		1382	void new (char *klass)
		1383	PPCODE:
		1384	{
		1385	SV *pv = NEWSV (0, sizeof (JSON));
		1386	SvPOK_only (pv);
		1387	Zero (SvPVX (pv), 1, JSON);
		1388	((JSON *)SvPVX (pv))->flags = F_DEFAULT;
		1389	XPUSHs (sv_2mortal (sv_bless (newRV_noinc (pv), JSON_STASH)));
		1390	}
		1391
1060	SV ascii (SV self, int enable = 1)	1392	void ascii (JSON *self, int enable = 1)
1061	ALIAS:	1393	ALIAS:
1062	ascii = F_ASCII	1394	ascii = F_ASCII
		1395	latin1 = F_LATIN1
1063	utf8 = F_UTF8	1396	utf8 = F_UTF8
1064	indent = F_INDENT	1397	indent = F_INDENT
1065	canonical = F_CANONICAL	1398	canonical = F_CANONICAL
1066	space_before = F_SPACE_BEFORE	1399	space_before = F_SPACE_BEFORE
1067	space_after = F_SPACE_AFTER	1400	space_after = F_SPACE_AFTER
1068	pretty = F_PRETTY	1401	pretty = F_PRETTY
1069	allow_nonref = F_ALLOW_NONREF	1402	allow_nonref = F_ALLOW_NONREF
1070	shrink = F_SHRINK	1403	shrink = F_SHRINK
		1404	allow_blessed = F_ALLOW_BLESSED
		1405	convert_blessed = F_CONV_BLESSED
1071	CODE:	1406	PPCODE:
1072	{	1407	{
1073	UV *uv = SvJSON (self);
1074	if (enable)	1408	if (enable)
1075	*uv \|= ix;	1409	self->flags \|= ix;
1076	else	1410	else
1077	*uv &= ~ix;	1411	self->flags &= ~ix;
1078		1412
1079	RETVAL = newSVsv (self);	1413	XPUSHs (ST (0));
1080	}	1414	}
1081	OUTPUT:
1082	RETVAL
1083		1415
1084	SV max_depth (SV self, UV max_depth = 0x80000000UL)	1416	void max_depth (JSON *self, UV max_depth = 0x80000000UL)
1085	CODE:	1417	PPCODE:
1086	{	1418	{
1087	UV *uv = SvJSON (self);
1088	UV log2 = 0;	1419	UV log2 = 0;
1089		1420
1090	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;	1421	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1091		1422
1092	while ((1UL << log2) < max_depth)	1423	while ((1UL << log2) < max_depth)
1093	++log2;	1424	++log2;
1094		1425
1095	uv = uv & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);	1426	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1096		1427
1097	RETVAL = newSVsv (self);	1428	XPUSHs (ST (0));
1098	}	1429	}
1099	OUTPUT:
1100	RETVAL
1101		1430
1102	void encode (SV self, SV scalar)	1431	void max_size (JSON *self, UV max_size = 0)
1103	PPCODE:	1432	PPCODE:
1104	XPUSHs (encode_json (scalar, *SvJSON (self)));	1433	{
		1434	UV log2 = 0;
1105		1435
1106	void decode (SV self, SV jsonstr)	1436	if (max_size > 0x80000000UL) max_size = 0x80000000UL;
		1437	if (max_size == 1) max_size = 2;
		1438
		1439	while ((1UL << log2) < max_size)
		1440	++log2;
		1441
		1442	self->flags = self->flags & ~F_MAXSIZE \| (log2 << S_MAXSIZE);
		1443
		1444	XPUSHs (ST (0));
		1445	}
		1446
		1447	void filter_json_object (JSON self, SV cb = &PL_sv_undef)
1107	PPCODE:	1448	PPCODE:
		1449	{
		1450	SvREFCNT_dec (self->cb_object);
		1451	self->cb_object = SvOK (cb) ? newSVsv (cb) : 0;
		1452
		1453	XPUSHs (ST (0));
		1454	}
		1455
		1456	void filter_json_single_key_object (JSON self, SV key, SV *cb = &PL_sv_undef)
		1457	PPCODE:
		1458	{
		1459	if (!self->cb_sk_object)
		1460	self->cb_sk_object = newHV ();
		1461
		1462	if (SvOK (cb))
		1463	hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0);
		1464	else
		1465	{
		1466	hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0);
		1467
		1468	if (!HvKEYS (self->cb_sk_object))
		1469	{
		1470	SvREFCNT_dec (self->cb_sk_object);
		1471	self->cb_sk_object = 0;
		1472	}
		1473	}
		1474
		1475	XPUSHs (ST (0));
		1476	}
		1477
		1478	void encode (JSON self, SV scalar)
		1479	PPCODE:
		1480	XPUSHs (encode_json (scalar, self));
		1481
		1482	void decode (JSON self, SV jsonstr)
		1483	PPCODE:
1108	XPUSHs (decode_json (jsonstr, *SvJSON (self)));	1484	XPUSHs (decode_json (jsonstr, self, 0));
		1485
		1486	void decode_prefix (JSON self, SV jsonstr)
		1487	PPCODE:
		1488	{
		1489	UV offset;
		1490	EXTEND (SP, 2);
		1491	PUSHs (decode_json (jsonstr, self, &offset));
		1492	PUSHs (sv_2mortal (newSVuv (offset)));
		1493	}
		1494
		1495	void DESTROY (JSON *self)
		1496	CODE:
		1497	SvREFCNT_dec (self->cb_sk_object);
		1498	SvREFCNT_dec (self->cb_object);
1109		1499
1110	PROTOTYPES: ENABLE	1500	PROTOTYPES: ENABLE
1111		1501
1112	void to_json (SV *scalar)	1502	void to_json (SV *scalar)
1113	ALIAS:
1114	objToJson = 0
1115	PPCODE:	1503	PPCODE:
		1504	{
		1505	JSON json = { F_DEFAULT \| F_UTF8 };
1116	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));	1506	XPUSHs (encode_json (scalar, &json));
		1507	}
1117		1508
1118	void from_json (SV *jsonstr)	1509	void from_json (SV *jsonstr)
1119	ALIAS:
1120	jsonToObj = 0
1121	PPCODE:	1510	PPCODE:
		1511	{
		1512	JSON json = { F_DEFAULT \| F_UTF8 };
1122	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8));	1513	XPUSHs (decode_json (jsonstr, &json, 0));
		1514	}
1123		1515

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+Removed lines
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Comparing JSON-XS/XS.xs (file contents): Revision 1.25 by root, Fri Apr 6 20:37:22 2007 UTC vs. Revision 1.59 by root, Mon Aug 13 16:14:20 2007 UTC

Diff Legend

Comparing JSON-XS/XS.xs (file contents):
Revision 1.25 by root, Fri Apr 6 20:37:22 2007 UTC vs.
Revision 1.59 by root, Mon Aug 13 16:14:20 2007 UTC