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

Comparing JSON-XS/XS.xs (file contents):
Revision 1.27 by root, Mon Apr 9 05:09:57 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"	8	#include <stdio.h>
		9	#include <float.h>
9		10
10	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)	11	#if defined(__BORLANDC__) \|\| defined(_MSC_VER)
11	# define snprintf _snprintf // C compilers have this in stdio.h	12	# define snprintf _snprintf // C compilers have this in stdio.h
12	#endif	13	#endif
13		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
14	#define F_ASCII 0x00000001UL	21	#define F_ASCII 0x00000001UL
		22	#define F_LATIN1 0x00000002UL
15	#define F_UTF8 0x00000002UL	23	#define F_UTF8 0x00000004UL
16	#define F_INDENT 0x00000004UL	24	#define F_INDENT 0x00000008UL
17	#define F_CANONICAL 0x00000008UL	25	#define F_CANONICAL 0x00000010UL
18	#define F_SPACE_BEFORE 0x00000010UL	26	#define F_SPACE_BEFORE 0x00000020UL
19	#define F_SPACE_AFTER 0x00000020UL	27	#define F_SPACE_AFTER 0x00000040UL
20	#define F_ALLOW_NONREF 0x00000080UL	28	#define F_ALLOW_NONREF 0x00000100UL
21	#define F_SHRINK 0x00000100UL	29	#define F_SHRINK 0x00000200UL
		30	#define F_ALLOW_BLESSED 0x00000400UL
		31	#define F_CONV_BLESSED 0x00000800UL
22	#define F_MAXDEPTH 0xf8000000UL	32	#define F_MAXDEPTH 0xf8000000UL
23	#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
24		37
25	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))	38	#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
26		39	#define DEC_SIZE(flags) (1UL << ((flags & F_MAXSIZE ) >> S_MAXSIZE ))
27	// F_SELFCONVERT? <=> to_json/toJson
28	// F_BLESSED? <=> { $__class__$ => }
29		40
30	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER	41	#define F_PRETTY F_INDENT \| F_SPACE_BEFORE \| F_SPACE_AFTER
31	#define F_DEFAULT (9UL << S_MAXDEPTH)	42	#define F_DEFAULT (9UL << S_MAXDEPTH)
32		43
33	#define INIT_SIZE 32 // initial scalar size to be allocated	44	#define INIT_SIZE 32 // initial scalar size to be allocated
34	#define INDENT_STEP 3 // spaces per indentation level	45	#define INDENT_STEP 3 // spaces per indentation level
35		46
36	#define UTF8_MAX_LEN 11 // for perls UTF-X: max. number of octets per character
37	#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
38		48
39	#define SB do {	49	#define SB do {
40	#define SE } while (0)	50	#define SE } while (0)
41		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
42	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;
43		79
44	/////////////////////////////////////////////////////////////////////////////	80	/////////////////////////////////////////////////////////////////////////////
45	// utility functions	81	// utility functions
46		82
47	static UV *	83	inline void
48	SvJSON (SV *sv)
49	{
50	if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash))
51	croak ("object is not of type JSON::XS");
52
53	return &SvUVX (SvRV (sv));
54	}
55
56	static void
57	shrink (SV *sv)	84	shrink (SV *sv)
58	{	85	{
59	sv_utf8_downgrade (sv, 1);	86	sv_utf8_downgrade (sv, 1);
60	if (SvLEN (sv) > SvCUR (sv) + 1)	87	if (SvLEN (sv) > SvCUR (sv) + 1)
61	{	88	{
70	// 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
71	// case of an error.	98	// case of an error.
72	// we special-case "safe" characters from U+80 .. U+7FF,	99	// we special-case "safe" characters from U+80 .. U+7FF,
73	// but use the very good perl function to parse anything else.	100	// but use the very good perl function to parse anything else.
74	// note that we never call this function for a ascii codepoints	101	// note that we never call this function for a ascii codepoints
75	static UV	102	inline UV
76	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)	103	decode_utf8 (unsigned char s, STRLEN len, STRLEN clen)
77	{	104	{
78	if (s[0] > 0xdf \|\| s[0] < 0xc2)	105	if (expect_false (s[0] > 0xdf \|\| s[0] < 0xc2))
79	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);	106	return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
80	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)	107	else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)
81	{	108	{
82	*clen = 2;	109	*clen = 2;
83	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);	110	return ((s[0] & 0x1f) << 6) \| (s[1] & 0x3f);
…		…
96	typedef struct	123	typedef struct
97	{	124	{
98	char *cur; // SvPVX (sv) + current output position	125	char *cur; // SvPVX (sv) + current output position
99	char *end; // SvEND (sv)	126	char *end; // SvEND (sv)
100	SV *sv; // result scalar	127	SV *sv; // result scalar
101	U32 flags; // F_*	128	JSON json;
102	U32 indent; // indentation level	129	U32 indent; // indentation level
103	U32 maxdepth; // max. indentation/recursion level	130	U32 maxdepth; // max. indentation/recursion level
104	} enc_t;	131	} enc_t;
105		132
106	static void	133	inline void
107	need (enc_t *enc, STRLEN len)	134	need (enc_t *enc, STRLEN len)
108	{	135	{
109	if (enc->cur + len >= enc->end)	136	if (expect_false (enc->cur + len >= enc->end))
110	{	137	{
111	STRLEN cur = enc->cur - SvPVX (enc->sv);	138	STRLEN cur = enc->cur - SvPVX (enc->sv);
112	SvGROW (enc->sv, cur + len + 1);	139	SvGROW (enc->sv, cur + len + 1);
113	enc->cur = SvPVX (enc->sv) + cur;	140	enc->cur = SvPVX (enc->sv) + cur;
114	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;	141	enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
115	}	142	}
116	}	143	}
117		144
118	static void	145	inline void
119	encode_ch (enc_t *enc, char ch)	146	encode_ch (enc_t *enc, char ch)
120	{	147	{
121	need (enc, 1);	148	need (enc, 1);
122	*enc->cur++ = ch;	149	*enc->cur++ = ch;
123	}	150	}
…		…
131		158
132	while (str < end)	159	while (str < end)
133	{	160	{
134	unsigned char ch = (unsigned char )str;	161	unsigned char ch = (unsigned char )str;
135		162
136	if (ch >= 0x20 && ch < 0x80) // most common case	163	if (expect_true (ch >= 0x20 && ch < 0x80)) // most common case
137	{	164	{
138	if (ch == '"') // but with slow exceptions	165	if (expect_false (ch == '"')) // but with slow exceptions
139	{	166	{
140	need (enc, len += 1);	167	need (enc, len += 1);
141	*enc->cur++ = '\\';	168	*enc->cur++ = '\\';
142	*enc->cur++ = '"';	169	*enc->cur++ = '"';
143	}	170	}
144	else if (ch == '\\')	171	else if (expect_false (ch == '\\'))
145	{	172	{
146	need (enc, len += 1);	173	need (enc, len += 1);
147	*enc->cur++ = '\\';	174	*enc->cur++ = '\\';
148	*enc->cur++ = '\\';	175	*enc->cur++ = '\\';
149	}	176	}
…		…
167	STRLEN clen;	194	STRLEN clen;
168	UV uch;	195	UV uch;
169		196
170	if (is_utf8)	197	if (is_utf8)
171	{	198	{
172	//uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
173	uch = decode_utf8 (str, end - str, &clen);	199	uch = decode_utf8 (str, end - str, &clen);
174	if (clen == (STRLEN)-1)	200	if (clen == (STRLEN)-1)
175	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);
176	}	202	}
177	else	203	else
…		…
181	}	207	}
182		208
183	if (uch > 0x10FFFFUL)	209	if (uch > 0x10FFFFUL)
184	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);
185		211
186	if (uch < 0x80 \|\| enc->flags & F_ASCII)	212	if (uch < 0x80 \|\| enc->json.flags & F_ASCII \|\| (enc->json.flags & F_LATIN1 && uch > 0xFF))
187	{	213	{
188	if (uch > 0xFFFFUL)	214	if (uch > 0xFFFFUL)
189	{	215	{
190	need (enc, len += 11);	216	need (enc, len += 11);
191	sprintf (enc->cur, "\\u%04x\\u%04x",	217	sprintf (enc->cur, "\\u%04x\\u%04x",
…		…
205	*enc->cur++ = hexdigit [(uch >> 0) & 15];	231	*enc->cur++ = hexdigit [(uch >> 0) & 15];
206	}	232	}
207		233
208	str += clen;	234	str += clen;
209	}	235	}
		236	else if (enc->json.flags & F_LATIN1)
		237	{
		238	*enc->cur++ = uch;
		239	str += clen;
		240	}
210	else if (is_utf8)	241	else if (is_utf8)
211	{	242	{
212	need (enc, len += clen);	243	need (enc, len += clen);
213	do	244	do
214	{	245	{
…		…
216	}	247	}
217	while (--clen);	248	while (--clen);
218	}	249	}
219	else	250	else
220	{	251	{
221	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
222	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);	253	enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
223	++str;	254	++str;
224	}	255	}
225	}	256	}
226	}	257	}
…		…
228		259
229	--len;	260	--len;
230	}	261	}
231	}	262	}
232		263
233	static void	264	inline void
234	encode_indent (enc_t *enc)	265	encode_indent (enc_t *enc)
235	{	266	{
236	if (enc->flags & F_INDENT)	267	if (enc->json.flags & F_INDENT)
237	{	268	{
238	int spaces = enc->indent * INDENT_STEP;	269	int spaces = enc->indent * INDENT_STEP;
239		270
240	need (enc, spaces);	271	need (enc, spaces);
241	memset (enc->cur, ' ', spaces);	272	memset (enc->cur, ' ', spaces);
242	enc->cur += spaces;	273	enc->cur += spaces;
243	}	274	}
244	}	275	}
245		276
246	static void	277	inline void
247	encode_space (enc_t *enc)	278	encode_space (enc_t *enc)
248	{	279	{
249	need (enc, 1);	280	need (enc, 1);
250	encode_ch (enc, ' ');	281	encode_ch (enc, ' ');
251	}	282	}
252		283
253	static void	284	inline void
254	encode_nl (enc_t *enc)	285	encode_nl (enc_t *enc)
255	{	286	{
256	if (enc->flags & F_INDENT)	287	if (enc->json.flags & F_INDENT)
257	{	288	{
258	need (enc, 1);	289	need (enc, 1);
259	encode_ch (enc, '\n');	290	encode_ch (enc, '\n');
260	}	291	}
261	}	292	}
262		293
263	static void	294	inline void
264	encode_comma (enc_t *enc)	295	encode_comma (enc_t *enc)
265	{	296	{
266	encode_ch (enc, ',');	297	encode_ch (enc, ',');
267		298
268	if (enc->flags & F_INDENT)	299	if (enc->json.flags & F_INDENT)
269	encode_nl (enc);	300	encode_nl (enc);
270	else if (enc->flags & F_SPACE_AFTER)	301	else if (enc->json.flags & F_SPACE_AFTER)
271	encode_space (enc);	302	encode_space (enc);
272	}	303	}
273		304
274	static void encode_sv (enc_t enc, SV sv);	305	static void encode_sv (enc_t enc, SV sv);
275		306
…		…
284	encode_ch (enc, '['); encode_nl (enc);	315	encode_ch (enc, '['); encode_nl (enc);
285	++enc->indent;	316	++enc->indent;
286		317
287	for (i = 0; i <= len; ++i)	318	for (i = 0; i <= len; ++i)
288	{	319	{
		320	SV **svp = av_fetch (av, i, 0);
		321
289	encode_indent (enc);	322	encode_indent (enc);
290	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);
291		328
292	if (i < len)	329	if (i < len)
293	encode_comma (enc);	330	encode_comma (enc);
294	}	331	}
295		332
…		…
318	else	355	else
319	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));	356	encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
320		357
321	encode_ch (enc, '"');	358	encode_ch (enc, '"');
322		359
323	if (enc->flags & F_SPACE_BEFORE) encode_space (enc);	360	if (enc->json.flags & F_SPACE_BEFORE) encode_space (enc);
324	encode_ch (enc, ':');	361	encode_ch (enc, ':');
325	if (enc->flags & F_SPACE_AFTER ) encode_space (enc);	362	if (enc->json.flags & F_SPACE_AFTER ) encode_space (enc);
326	encode_sv (enc, HeVAL (he));	363	encode_sv (enc, HeVAL (he));
327	}	364	}
328		365
329	// compare hash entries, used when all keys are bytestrings	366	// compare hash entries, used when all keys are bytestrings
330	static int	367	static int
…		…
365	{	402	{
366	// for canonical output we have to sort by keys first	403	// for canonical output we have to sort by keys first
367	// actually, this is mostly due to the stupid so-called	404	// actually, this is mostly due to the stupid so-called
368	// security workaround added somewhere in 5.8.x.	405	// security workaround added somewhere in 5.8.x.
369	// that randomises hash orderings	406	// that randomises hash orderings
370	if (enc->flags & F_CANONICAL)	407	if (enc->json.flags & F_CANONICAL)
371	{	408	{
372	HE he, hes [count]; // if your compiler dies here, you need to enable C99 mode
373	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
374		416
375	i = 0;	417	i = 0;
376	while ((he = hv_iternext (hv)))	418	while ((he = hv_iternext (hv)))
377	{	419	{
378	hes [i++] = he;	420	hes [i++] = he;
…		…
442	svtype svt;	484	svtype svt;
443		485
444	SvGETMAGIC (sv);	486	SvGETMAGIC (sv);
445	svt = SvTYPE (sv);	487	svt = SvTYPE (sv);
446		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	}
447	if (svt == SVt_PVHV)	551	else if (svt == SVt_PVHV)
448	encode_hv (enc, (HV *)sv);	552	encode_hv (enc, (HV *)sv);
449	else if (svt == SVt_PVAV)	553	else if (svt == SVt_PVAV)
450	encode_av (enc, (AV *)sv);	554	encode_av (enc, (AV *)sv);
451	else if (svt < SVt_PVAV)	555	else if (svt < SVt_PVAV)
452	{	556	{
453	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')
454	encode_str (enc, "false", 5, 0);	563	encode_str (enc, "false", 5, 0);
455	else if (SvNIOK (sv) && SvIV (sv) == 1)
456	encode_str (enc, "true", 4, 0);
457	else	564	else
458	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",
459	SvPV_nolen (sv_2mortal (newRV_inc (sv))));	566	SvPV_nolen (sv_2mortal (newRV_inc (sv))));
460	}	567	}
461	else	568	else
…		…
476	encode_str (enc, str, len, SvUTF8 (sv));	583	encode_str (enc, str, len, SvUTF8 (sv));
477	encode_ch (enc, '"');	584	encode_ch (enc, '"');
478	}	585	}
479	else if (SvNOKp (sv))	586	else if (SvNOKp (sv))
480	{	587	{
		588	// trust that perl will do the right thing w.r.t. JSON syntax.
481	need (enc, NV_DIG + 32);	589	need (enc, NV_DIG + 32);
482	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);	590	Gconvert (SvNVX (sv), NV_DIG, 0, enc->cur);
483	enc->cur += strlen (enc->cur);	591	enc->cur += strlen (enc->cur);
484	}	592	}
485	else if (SvIOKp (sv))	593	else if (SvIOKp (sv))
486	{	594	{
487	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);
488	enc->cur +=	600	enc->cur +=
489	SvIsUV(sv)	601	SvIsUV(sv)
490	? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))	602	? snprintf (enc->cur, sizeof (UV) * 3, "%"UVuf, (UV)SvUVX (sv))
491	: 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	}
492	}	632	}
493	else if (SvROK (sv))	633	else if (SvROK (sv))
494	encode_rv (enc, SvRV (sv));	634	encode_rv (enc, SvRV (sv));
495	else if (!SvOK (sv))	635	else if (!SvOK (sv))
496	encode_str (enc, "null", 4, 0);	636	encode_str (enc, "null", 4, 0);
…		…
498	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",
499	SvPV_nolen (sv), SvFLAGS (sv));	639	SvPV_nolen (sv), SvFLAGS (sv));
500	}	640	}
501		641
502	static SV *	642	static SV *
503	encode_json (SV *scalar, U32 flags)	643	encode_json (SV scalar, JSON json)
504	{	644	{
505	enc_t enc;	645	enc_t enc;
506		646
507	if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))	647	if (!(json->flags & F_ALLOW_NONREF) && !SvROK (scalar))
508	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)");
509		649
510	enc.flags = flags;	650	enc.json = *json;
511	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));	651	enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
512	enc.cur = SvPVX (enc.sv);	652	enc.cur = SvPVX (enc.sv);
513	enc.end = SvEND (enc.sv);	653	enc.end = SvEND (enc.sv);
514	enc.indent = 0;	654	enc.indent = 0;
515	enc.maxdepth = DEC_DEPTH (flags);	655	enc.maxdepth = DEC_DEPTH (enc.json.flags);
516		656
517	SvPOK_only (enc.sv);	657	SvPOK_only (enc.sv);
518	encode_sv (&enc, scalar);	658	encode_sv (&enc, scalar);
519		659
520	if (!(flags & (F_ASCII \| F_UTF8)))
521	SvUTF8_on (enc.sv);
522
523	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));	660	SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
524	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings	661	*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
525		662
		663	if (!(enc.json.flags & (F_ASCII \| F_LATIN1 \| F_UTF8)))
		664	SvUTF8_on (enc.sv);
		665
526	if (enc.flags & F_SHRINK)	666	if (enc.json.flags & F_SHRINK)
527	shrink (enc.sv);	667	shrink (enc.sv);
528		668
529	return enc.sv;	669	return enc.sv;
530	}	670	}
531		671
…		…
536	typedef struct	676	typedef struct
537	{	677	{
538	char *cur; // current parser pointer	678	char *cur; // current parser pointer
539	char *end; // end of input string	679	char *end; // end of input string
540	const char *err; // parse error, if != 0	680	const char *err; // parse error, if != 0
541	U32 flags; // F_*	681	JSON json;
542	U32 depth; // recursion depth	682	U32 depth; // recursion depth
543	U32 maxdepth; // recursion depth limit	683	U32 maxdepth; // recursion depth limit
544	} dec_t;	684	} dec_t;
545		685
546	static void	686	inline void
547	decode_ws (dec_t *dec)	687	decode_ws (dec_t *dec)
548	{	688	{
549	for (;;)	689	for (;;)
550	{	690	{
551	char ch = *dec->cur;	691	char ch = *dec->cur;
…		…
577	decode_4hex (dec_t *dec)	717	decode_4hex (dec_t *dec)
578	{	718	{
579	signed char d1, d2, d3, d4;	719	signed char d1, d2, d3, d4;
580	unsigned char cur = (unsigned char )dec->cur;	720	unsigned char cur = (unsigned char )dec->cur;
581		721
582	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");
583	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");
584	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");
585	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");
586		726
587	dec->cur += 4;	727	dec->cur += 4;
588		728
589	return ((UV)d1) << 12	729	return ((UV)d1) << 12
590	\| ((UV)d2) << 8	730	\| ((UV)d2) << 8
…		…
598	static SV *	738	static SV *
599	decode_str (dec_t *dec)	739	decode_str (dec_t *dec)
600	{	740	{
601	SV *sv = 0;	741	SV *sv = 0;
602	int utf8 = 0;	742	int utf8 = 0;
		743	char *dec_cur = dec->cur;
603		744
604	do	745	do
605	{	746	{
606	char buf [SHORT_STRING_LEN + UTF8_MAX_LEN];	747	char buf [SHORT_STRING_LEN + UTF8_MAXBYTES];
607	char *cur = buf;	748	char *cur = buf;
608		749
609	do	750	do
610	{	751	{
611	unsigned char ch = (unsigned char )dec->cur++;	752	unsigned char ch = (unsigned char )dec_cur++;
612		753
613	if (ch == '"')	754	if (expect_false (ch == '"'))
614	{	755	{
615	--dec->cur;	756	--dec_cur;
616	break;	757	break;
617	}	758	}
618	else if (ch == '\\')	759	else if (expect_false (ch == '\\'))
619	{	760	{
620	switch (*dec->cur)	761	switch (*dec_cur)
621	{	762	{
622	case '\\':	763	case '\\':
623	case '/':	764	case '/':
624	case '"': cur++ = dec->cur++; break;	765	case '"': cur++ = dec_cur++; break;
625		766
626	case 'b': ++dec->cur; *cur++ = '\010'; break;	767	case 'b': ++dec_cur; *cur++ = '\010'; break;
627	case 't': ++dec->cur; *cur++ = '\011'; break;	768	case 't': ++dec_cur; *cur++ = '\011'; break;
628	case 'n': ++dec->cur; *cur++ = '\012'; break;	769	case 'n': ++dec_cur; *cur++ = '\012'; break;
629	case 'f': ++dec->cur; *cur++ = '\014'; break;	770	case 'f': ++dec_cur; *cur++ = '\014'; break;
630	case 'r': ++dec->cur; *cur++ = '\015'; break;	771	case 'r': ++dec_cur; *cur++ = '\015'; break;
631		772
632	case 'u':	773	case 'u':
633	{	774	{
634	UV lo, hi;	775	UV lo, hi;
635	++dec->cur;	776	++dec_cur;
636		777
		778	dec->cur = dec_cur;
637	hi = decode_4hex (dec);	779	hi = decode_4hex (dec);
		780	dec_cur = dec->cur;
638	if (hi == (UV)-1)	781	if (hi == (UV)-1)
639	goto fail;	782	goto fail;
640		783
641	// possibly a surrogate pair	784	// possibly a surrogate pair
642	if (hi >= 0xd800)	785	if (hi >= 0xd800)
643	if (hi < 0xdc00)	786	if (hi < 0xdc00)
644	{	787	{
645	if (dec->cur [0] != '\\' \|\| dec->cur [1] != 'u')	788	if (dec_cur [0] != '\\' \|\| dec_cur [1] != 'u')
646	ERR ("missing low surrogate character in surrogate pair");	789	ERR ("missing low surrogate character in surrogate pair");
647		790
648	dec->cur += 2;	791	dec_cur += 2;
649		792
		793	dec->cur = dec_cur;
650	lo = decode_4hex (dec);	794	lo = decode_4hex (dec);
		795	dec_cur = dec->cur;
651	if (lo == (UV)-1)	796	if (lo == (UV)-1)
652	goto fail;	797	goto fail;
653		798
654	if (lo < 0xdc00 \|\| lo >= 0xe000)	799	if (lo < 0xdc00 \|\| lo >= 0xe000)
655	ERR ("surrogate pair expected");	800	ERR ("surrogate pair expected");
…		…
669	*cur++ = hi;	814	*cur++ = hi;
670	}	815	}
671	break;	816	break;
672		817
673	default:	818	default:
674	--dec->cur;	819	--dec_cur;
675	ERR ("illegal backslash escape sequence in string");	820	ERR ("illegal backslash escape sequence in string");
676	}	821	}
677	}	822	}
678	else if (ch >= 0x20 && ch <= 0x7f)	823	else if (expect_true (ch >= 0x20 && ch <= 0x7f))
679	*cur++ = ch;	824	*cur++ = ch;
680	else if (ch >= 0x80)	825	else if (ch >= 0x80)
681	{	826	{
682	STRLEN clen;	827	STRLEN clen;
683	UV uch;	828	UV uch;
684		829
685	--dec->cur;	830	--dec_cur;
686		831
687	uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen);	832	uch = decode_utf8 (dec_cur, dec->end - dec_cur, &clen);
688	if (clen == (STRLEN)-1)	833	if (clen == (STRLEN)-1)
689	ERR ("malformed UTF-8 character in JSON string");	834	ERR ("malformed UTF-8 character in JSON string");
690		835
691	do	836	do
692	cur++ = dec->cur++;	837	cur++ = dec_cur++;
693	while (--clen);	838	while (--clen);
694		839
695	utf8 = 1;	840	utf8 = 1;
696	}	841	}
697	else	842	else
698	{	843	{
699	--dec->cur;	844	--dec_cur;
700		845
701	if (!ch)	846	if (!ch)
702	ERR ("unexpected end of string while parsing JSON string");	847	ERR ("unexpected end of string while parsing JSON string");
703	else	848	else
704	ERR ("invalid character encountered while parsing JSON string");	849	ERR ("invalid character encountered while parsing JSON string");
…		…
717	}	862	}
718	else	863	else
719	sv = newSVpvn (buf, len);	864	sv = newSVpvn (buf, len);
720	}	865	}
721	}	866	}
722	while (*dec->cur != '"');	867	while (*dec_cur != '"');
723		868
724	++dec->cur;	869	++dec_cur;
725		870
726	if (sv)	871	if (sv)
727	{	872	{
728	SvPOK_only (sv);	873	SvPOK_only (sv);
729	*SvEND (sv) = 0;	874	*SvEND (sv) = 0;
…		…
732	SvUTF8_on (sv);	877	SvUTF8_on (sv);
733	}	878	}
734	else	879	else
735	sv = newSVpvn ("", 0);	880	sv = newSVpvn ("", 0);
736		881
		882	dec->cur = dec_cur;
737	return sv;	883	return sv;
738		884
739	fail:	885	fail:
		886	dec->cur = dec_cur;
740	return 0;	887	return 0;
741	}	888	}
742		889
743	static SV *	890	static SV *
744	decode_num (dec_t *dec)	891	decode_num (dec_t *dec)
…		…
802	is_nv = 1;	949	is_nv = 1;
803	}	950	}
804		951
805	if (!is_nv)	952	if (!is_nv)
806	{	953	{
807	UV uv;	954	int len = dec->cur - start;
808	int numtype = grok_number (start, dec->cur - start, &uv);	955
809	if (numtype & IS_NUMBER_IN_UV)	956	// special case the rather common 1..4-digit-int case, assumes 32 bit ints or so
810	if (numtype & IS_NUMBER_NEG)	957	if (*start == '-')
		958	switch (len)
811	{	959	{
812	if (uv < (UV)IV_MIN)	960	case 2: return newSViv (-( start [1] - '0' * 1));
813	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));
814	}	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	}
815	else	983	else
816	return newSVuv (uv);	984	return newSVuv (uv);
817	}	985	}
818		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
819	return newSVnv (Atof (start));	1003	return newSVnv (Atof (start));
820		1004
821	fail:	1005	fail:
822	return 0;	1006	return 0;
823	}	1007	}
…		…
867	}	1051	}
868		1052
869	static SV *	1053	static SV *
870	decode_hv (dec_t *dec)	1054	decode_hv (dec_t *dec)
871	{	1055	{
		1056	SV *sv;
872	HV *hv = newHV ();	1057	HV *hv = newHV ();
873		1058
874	DEC_INC_DEPTH;	1059	DEC_INC_DEPTH;
875	decode_ws (dec);	1060	decode_ws (dec);
876		1061
877	if (*dec->cur == '}')	1062	if (*dec->cur == '}')
878	++dec->cur;	1063	++dec->cur;
879	else	1064	else
880	for (;;)	1065	for (;;)
881	{	1066	{
882	SV key, value;
883
884	decode_ws (dec); EXPECT_CH ('"');	1067	decode_ws (dec); EXPECT_CH ('"');
885		1068
886	key = decode_str (dec);	1069	// heuristic: assume that
887	if (!key)	1070	// a) decode_str + hv_store_ent are abysmally slow.
888	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
889		1078
890	decode_ws (dec); EXPECT_CH (':');	1079	for (;;)
891
892	value = decode_sv (dec);
893	if (!value)
894	{	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);
895	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)
896	goto fail;	1114	goto fail;
		1115
		1116	hv_store (hv, key, len, value, 0);
		1117
		1118	break;
		1119	}
		1120
		1121	++p;
897	}	1122	}
898		1123	}
899	hv_store_ent (hv, key, value, 0);
900	SvREFCNT_dec (key);
901		1124
902	decode_ws (dec);	1125	decode_ws (dec);
903		1126
904	if (*dec->cur == '}')	1127	if (*dec->cur == '}')
905	{	1128	{
…		…
912		1135
913	++dec->cur;	1136	++dec->cur;
914	}	1137	}
915		1138
916	DEC_DEC_DEPTH;	1139	DEC_DEC_DEPTH;
917	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;
918		1201
919	fail:	1202	fail:
920	SvREFCNT_dec (hv);	1203	SvREFCNT_dec (hv);
921	DEC_DEC_DEPTH;	1204	DEC_DEC_DEPTH;
922	return 0;	1205	return 0;
…		…
924		1207
925	static SV *	1208	static SV *
926	decode_sv (dec_t *dec)	1209	decode_sv (dec_t *dec)
927	{	1210	{
928	decode_ws (dec);	1211	decode_ws (dec);
		1212
		1213	// the beauty of JSON: you need exactly one character lookahead
		1214	// to parse anything.
929	switch (*dec->cur)	1215	switch (*dec->cur)
930	{	1216	{
931	case '"': ++dec->cur; return decode_str (dec);	1217	case '"': ++dec->cur; return decode_str (dec);
932	case '[': ++dec->cur; return decode_av (dec);	1218	case '[': ++dec->cur; return decode_av (dec);
933	case '{': ++dec->cur; return decode_hv (dec);	1219	case '{': ++dec->cur; return decode_hv (dec);
…		…
939		1225
940	case 't':	1226	case 't':
941	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))	1227	if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4))
942	{	1228	{
943	dec->cur += 4;	1229	dec->cur += 4;
944	return newSViv (1);	1230	return SvREFCNT_inc (json_true);
945	}	1231	}
946	else	1232	else
947	ERR ("'true' expected");	1233	ERR ("'true' expected");
948		1234
949	break;	1235	break;
950		1236
951	case 'f':	1237	case 'f':
952	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))	1238	if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5))
953	{	1239	{
954	dec->cur += 5;	1240	dec->cur += 5;
955	return newSViv (0);	1241	return SvREFCNT_inc (json_false);
956	}	1242	}
957	else	1243	else
958	ERR ("'false' expected");	1244	ERR ("'false' expected");
959		1245
960	break;	1246	break;
…		…
978	fail:	1264	fail:
979	return 0;	1265	return 0;
980	}	1266	}
981		1267
982	static SV *	1268	static SV *
983	decode_json (SV *string, U32 flags)	1269	decode_json (SV string, JSON json, UV *offset_return)
984	{	1270	{
985	dec_t dec;	1271	dec_t dec;
		1272	UV offset;
986	SV *sv;	1273	SV *sv;
987		1274
		1275	SvGETMAGIC (string);
988	SvUPGRADE (string, SVt_PV);	1276	SvUPGRADE (string, SVt_PV);
989		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
990	if (flags & F_UTF8)	1282	if (json->flags & F_UTF8)
991	sv_utf8_downgrade (string, 0);	1283	sv_utf8_downgrade (string, 0);
992	else	1284	else
993	sv_utf8_upgrade (string);	1285	sv_utf8_upgrade (string);
994		1286
995	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP	1287	SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
996		1288
997	dec.flags = flags;	1289	dec.json = *json;
998	dec.cur = SvPVX (string);	1290	dec.cur = SvPVX (string);
999	dec.end = SvEND (string);	1291	dec.end = SvEND (string);
1000	dec.err = 0;	1292	dec.err = 0;
1001	dec.depth = 0;	1293	dec.depth = 0;
1002	dec.maxdepth = DEC_DEPTH (dec.flags);	1294	dec.maxdepth = DEC_DEPTH (dec.json.flags);
1003		1295
		1296	if (dec.json.cb_object \|\| dec.json.cb_sk_object)
		1297	dec.json.flags \|= F_HOOK;
		1298
1004	*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
1005	sv = decode_sv (&dec);	1300	sv = decode_sv (&dec);
1006		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
1007	if (!sv)	1325	if (!sv)
1008	{	1326	{
1009	IV offset = dec.flags & F_UTF8
1010	? dec.cur - SvPVX (string)
1011	: utf8_distance (dec.cur, SvPVX (string));
1012	SV *uni = sv_newmortal ();	1327	SV *uni = sv_newmortal ();
1013		1328
1014	// horrible hack to silence warning inside pv_uni_display	1329	// horrible hack to silence warning inside pv_uni_display
1015	COP cop = *PL_curcop;	1330	COP cop = *PL_curcop;
1016	cop.cop_warnings = pWARN_NONE;	1331	cop.cop_warnings = pWARN_NONE;
…		…
1026	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");	1341	dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
1027	}	1342	}
1028		1343
1029	sv = sv_2mortal (sv);	1344	sv = sv_2mortal (sv);
1030		1345
1031	if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))	1346	if (!(dec.json.flags & F_ALLOW_NONREF) && !SvROK (sv))
1032	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)");
1033		1348
1034	return sv;	1349	return sv;
1035	}	1350	}
1036		1351
…		…
1040	MODULE = JSON::XS PACKAGE = JSON::XS	1355	MODULE = JSON::XS PACKAGE = JSON::XS
1041		1356
1042	BOOT:	1357	BOOT:
1043	{	1358	{
1044	int i;	1359	int i;
1045
1046	memset (decode_hexdigit, 0xff, 256);
1047		1360
1048	for (i = 0; i < 256; ++i)	1361	for (i = 0; i < 256; ++i)
1049	decode_hexdigit [i] =	1362	decode_hexdigit [i] =
1050	i >= '0' && i <= '9' ? i - '0'	1363	i >= '0' && i <= '9' ? i - '0'
1051	: i >= 'a' && i <= 'f' ? i - 'a' + 10	1364	: i >= 'a' && i <= 'f' ? i - 'a' + 10
1052	: i >= 'A' && i <= 'F' ? i - 'A' + 10	1365	: i >= 'A' && i <= 'F' ? i - 'A' + 10
1053	: -1;	1366	: -1;
1054		1367
1055	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);
1056	}	1373	}
1057		1374
1058	PROTOTYPES: DISABLE	1375	PROTOTYPES: DISABLE
1059		1376
1060	SV new (char dummy)	1377	void CLONE (...)
1061	CODE:	1378	CODE:
1062	RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);	1379	json_stash = 0;
1063	OUTPUT:	1380	json_boolean_stash = 0;
1064	RETVAL
1065		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
1066	SV ascii (SV self, int enable = 1)	1392	void ascii (JSON *self, int enable = 1)
1067	ALIAS:	1393	ALIAS:
1068	ascii = F_ASCII	1394	ascii = F_ASCII
		1395	latin1 = F_LATIN1
1069	utf8 = F_UTF8	1396	utf8 = F_UTF8
1070	indent = F_INDENT	1397	indent = F_INDENT
1071	canonical = F_CANONICAL	1398	canonical = F_CANONICAL
1072	space_before = F_SPACE_BEFORE	1399	space_before = F_SPACE_BEFORE
1073	space_after = F_SPACE_AFTER	1400	space_after = F_SPACE_AFTER
1074	pretty = F_PRETTY	1401	pretty = F_PRETTY
1075	allow_nonref = F_ALLOW_NONREF	1402	allow_nonref = F_ALLOW_NONREF
1076	shrink = F_SHRINK	1403	shrink = F_SHRINK
		1404	allow_blessed = F_ALLOW_BLESSED
		1405	convert_blessed = F_CONV_BLESSED
1077	CODE:	1406	PPCODE:
1078	{	1407	{
1079	UV *uv = SvJSON (self);
1080	if (enable)	1408	if (enable)
1081	*uv \|= ix;	1409	self->flags \|= ix;
1082	else	1410	else
1083	*uv &= ~ix;	1411	self->flags &= ~ix;
1084		1412
1085	RETVAL = newSVsv (self);	1413	XPUSHs (ST (0));
1086	}	1414	}
1087	OUTPUT:
1088	RETVAL
1089		1415
1090	SV max_depth (SV self, UV max_depth = 0x80000000UL)	1416	void max_depth (JSON *self, UV max_depth = 0x80000000UL)
1091	CODE:	1417	PPCODE:
1092	{	1418	{
1093	UV *uv = SvJSON (self);
1094	UV log2 = 0;	1419	UV log2 = 0;
1095		1420
1096	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;	1421	if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1097		1422
1098	while ((1UL << log2) < max_depth)	1423	while ((1UL << log2) < max_depth)
1099	++log2;	1424	++log2;
1100		1425
1101	uv = uv & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);	1426	self->flags = self->flags & ~F_MAXDEPTH \| (log2 << S_MAXDEPTH);
1102		1427
1103	RETVAL = newSVsv (self);	1428	XPUSHs (ST (0));
1104	}	1429	}
1105	OUTPUT:
1106	RETVAL
1107		1430
1108	void encode (SV self, SV scalar)	1431	void max_size (JSON *self, UV max_size = 0)
1109	PPCODE:	1432	PPCODE:
1110	XPUSHs (encode_json (scalar, *SvJSON (self)));	1433	{
		1434	UV log2 = 0;
1111		1435
1112	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)
1113	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:
1114	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);
1115		1499
1116	PROTOTYPES: ENABLE	1500	PROTOTYPES: ENABLE
1117		1501
1118	void to_json (SV *scalar)	1502	void to_json (SV *scalar)
1119	ALIAS:
1120	objToJson = 0
1121	PPCODE:	1503	PPCODE:
		1504	{
		1505	JSON json = { F_DEFAULT \| F_UTF8 };
1122	XPUSHs (encode_json (scalar, F_DEFAULT \| F_UTF8));	1506	XPUSHs (encode_json (scalar, &json));
		1507	}
1123		1508
1124	void from_json (SV *jsonstr)	1509	void from_json (SV *jsonstr)
1125	ALIAS:
1126	jsonToObj = 0
1127	PPCODE:	1510	PPCODE:
		1511	{
		1512	JSON json = { F_DEFAULT \| F_UTF8 };
1128	XPUSHs (decode_json (jsonstr, F_DEFAULT \| F_UTF8));	1513	XPUSHs (decode_json (jsonstr, &json, 0));
		1514	}
1129		1515

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+Removed lines
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Comparing JSON-XS/XS.xs (file contents): Revision 1.27 by root, Mon Apr 9 05:09:57 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 1.27 by root, Mon Apr 9 05:09:57 2007 UTC vs.
Revision 1.59 by root, Mon Aug 13 16:14:20 2007 UTC