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Comparing JSON-XS/XS.xs (file contents):
Revision 1.1 by root, Thu Mar 22 16:40:16 2007 UTC vs.
Revision 1.21 by root, Thu Mar 29 02:45:49 2007 UTC

… …
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 8
9#define F_ASCII 0x00000001 9#define F_ASCII 0x00000001UL
10#define F_UTF8 0x00000002 10#define F_UTF8 0x00000002UL
11#define F_INDENT 0x00000004 11#define F_INDENT 0x00000004UL
12#define F_CANONICAL 0x00000008 12#define F_CANONICAL 0x00000008UL
13#define F_SPACE_BEFORE 0x00000010 13#define F_SPACE_BEFORE 0x00000010UL
14#define F_SPACE_AFTER 0x00000020 14#define F_SPACE_AFTER 0x00000020UL
15#define F_ALLOW_NONREF 0x00000080UL
15#define F_JSON_RPC 0x00000040 16#define F_SHRINK 0x00000100UL
17#define F_MAXDEPTH 0xf8000000UL
18#define S_MAXDEPTH 27
16 19
17#define F_DEFAULT 0 20#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
21
22// F_SELFCONVERT? <=> to_json/toJson
23// F_BLESSED? <=> { $__class__$ => }
24
25#define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER
26#define F_DEFAULT (12UL << S_MAXDEPTH)
18 27
19#define INIT_SIZE 32 // initial scalar size to be allocated 28#define INIT_SIZE 32 // initial scalar size to be allocated
29#define INDENT_STEP 3 // spaces per indentation level
30
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
20 33
21#define SB do { 34#define SB do {
22#define SE } while (0) 35#define SE } while (0)
23 36
24static HV *json_stash; 37static HV *json_stash; // JSON::XS::
38
39/////////////////////////////////////////////////////////////////////////////
40// utility functions
41
42static UV *
43SvJSON (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
51static void
52shrink (SV *sv)
53{
54 sv_utf8_downgrade (sv, 1);
55 if (SvLEN (sv) > SvCUR (sv) + 1)
56 {
57#ifdef SvPV_shrink_to_cur
58 SvPV_shrink_to_cur (sv);
59#elif defined (SvPV_renew)
60 SvPV_renew (sv, SvCUR (sv) + 1);
61#endif
62 }
63}
64
65// decode an utf-8 character and return it, or (UV)-1 in
66// case of an error.
67// we special-case "safe" characters from U+80 .. U+7FF,
68// but use the very good perl function to parse anything else.
69// note that we never call this function for a ascii codepoints
70static UV
71decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen)
72{
73 if (s[0] > 0xdf || s[0] < 0xc2)
74 return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
75 else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)
76 {
77 *clen = 2;
78 return ((s[0] & 0x1f) << 6) | (s[1] & 0x3f);
79 }
80 else
81 return (UV)-1;
82}
83
84/////////////////////////////////////////////////////////////////////////////
85// encoder
25 86
26// structure used for encoding JSON 87// structure used for encoding JSON
27typedef struct 88typedef struct
28{ 89{
29 char *cur; 90 char *cur; // SvPVX (sv) + current output position
30 STRLEN len; // SvLEN (sv)
31 char *end; // SvEND (sv) 91 char *end; // SvEND (sv)
32 SV *sv; 92 SV *sv; // result scalar
33 UV flags; 93 U32 flags; // F_*
34 int max_recurse; 94 U32 indent; // indentation level
35 int indent; 95 U32 maxdepth; // max. indentation/recursion level
36} enc_t; 96} enc_t;
37
38// structure used for decoding JSON
39typedef struct
40{
41 char *cur;
42 char *end;
43 char *err;
44 UV flags;
45} dec_t;
46
47static UV *
48SvJSON (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/////////////////////////////////////////////////////////////////////////////
57 97
58static void 98static void
59need (enc_t *enc, STRLEN len) 99need (enc_t *enc, STRLEN len)
60{ 100{
61 if (enc->cur + len >= enc->end) 101 if (enc->cur + len >= enc->end)
62 { 102 {
63 STRLEN cur = enc->cur - SvPVX (enc->sv); 103 STRLEN cur = enc->cur - SvPVX (enc->sv);
64 SvGROW (enc->sv, cur + len + 1); 104 SvGROW (enc->sv, cur + len + 1);
65 enc->cur = SvPVX (enc->sv) + cur; 105 enc->cur = SvPVX (enc->sv) + cur;
66 enc->end = SvEND (enc->sv); 106 enc->end = SvPVX (enc->sv) + SvLEN (enc->sv);
67 } 107 }
68} 108}
69 109
70static void 110static void
71encode_ch (enc_t *enc, char ch) 111encode_ch (enc_t *enc, char ch)
… …
77static void 117static void
78encode_str (enc_t *enc, char *str, STRLEN len, int is_utf8) 118encode_str (enc_t *enc, char *str, STRLEN len, int is_utf8)
79{ 119{
80 char *end = str + len; 120 char *end = str + len;
81 121
122 need (enc, len);
123
82 while (str < end) 124 while (str < end)
83 { 125 {
84 unsigned char ch = *(unsigned char *)str; 126 unsigned char ch = *(unsigned char *)str;
127
85 if (ch >= 0x20 && ch < 0x80) // most common case 128 if (ch >= 0x20 && ch < 0x80) // most common case
86 { 129 {
130 if (ch == '"') // but with slow exceptions
131 {
132 need (enc, len += 1);
133 *enc->cur++ = '\\';
134 *enc->cur++ = '"';
135 }
136 else if (ch == '\\')
137 {
138 need (enc, len += 1);
139 *enc->cur++ = '\\';
140 *enc->cur++ = '\\';
141 }
142 else
87 *enc->cur++ = ch; 143 *enc->cur++ = ch;
144
88 str++; 145 ++str;
89 } 146 }
90 else 147 else
91 { 148 {
92 STRLEN clen; 149 switch (ch)
93 UV uch;
94
95 if (is_utf8)
96 { 150 {
97 uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY); 151 case '\010': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break;
98 if (clen < 0) 152 case '\011': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break;
99 croak ("malformed UTF-8 character in string, cannot convert to JSON"); 153 case '\012': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break;
100 } 154 case '\014': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break;
101 else 155 case '\015': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break;
102 {
103 uch = ch;
104 clen = 1;
105 }
106 156
107 need (enc, len += 6); 157 default:
108
109 if (uch < 0xa0 || enc->flags & F_ASCII)
110 {
111 if (uch > 0xFFFFUL)
112 { 158 {
159 STRLEN clen;
160 UV uch;
161
162 if (is_utf8)
163 {
164 //uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
165 uch = decode_utf8 (str, end - str, &clen);
166 if (clen == (STRLEN)-1)
167 croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);
168 }
169 else
170 {
171 uch = ch;
113 len += 6; 172 clen = 1;
173 }
174
175 if (uch > 0x10FFFFUL)
176 croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
177
178 if (uch < 0x80 || enc->flags & F_ASCII)
179 {
180 if (uch > 0xFFFFUL)
181 {
114 need (enc, len += 6); 182 need (enc, len += 11);
115 sprintf (enc->cur, "\\u%04x\\u%04x", 183 sprintf (enc->cur, "\\u%04x\\u%04x",
116 (uch - 0x10000) / 0x400 + 0xD800, 184 (int)((uch - 0x10000) / 0x400 + 0xD800),
117 (uch - 0x10000) % 0x400 + 0xDC00); 185 (int)((uch - 0x10000) % 0x400 + 0xDC00));
118 enc->cur += 12; 186 enc->cur += 12;
187 }
188 else
189 {
190 static char hexdigit [16] = "0123456789abcdef";
191 need (enc, len += 5);
192 *enc->cur++ = '\\';
193 *enc->cur++ = 'u';
194 *enc->cur++ = hexdigit [ uch >> 12 ];
195 *enc->cur++ = hexdigit [(uch >> 8) & 15];
196 *enc->cur++ = hexdigit [(uch >> 4) & 15];
197 *enc->cur++ = hexdigit [(uch >> 0) & 15];
198 }
199
200 str += clen;
119 } 201 }
202 else if (is_utf8)
203 {
204 need (enc, len += clen);
205 do
206 {
207 *enc->cur++ = *str++;
208 }
209 while (--clen);
210 }
120 else 211 else
121 { 212 {
122 sprintf (enc->cur, "\\u%04x", uch); 213 need (enc, len += UTF8_MAX_LEN - 1); // never more than 11 bytes needed
123 enc->cur += 6; 214 enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
215 ++str;
216 }
124 } 217 }
125 } 218 }
126 else if (is_utf8)
127 {
128 memcpy (enc->cur, str, clen);
129 enc->cur += clen;
130 }
131 else
132 enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
133
134 str += clen;
135 } 219 }
136 220
137 --len; 221 --len;
138 } 222 }
139} 223}
140 224
141#define INDENT SB \ 225static void
226encode_indent (enc_t *enc)
227{
142 if (enc->flags & F_INDENT) \ 228 if (enc->flags & F_INDENT)
143 { \ 229 {
144 int i_; \ 230 int spaces = enc->indent * INDENT_STEP;
145 need (enc, enc->indent); \
146 for (i_ = enc->indent * 3; i_--; )\
147 encode_ch (enc, ' '); \
148 } \
149 SE
150 231
151#define SPACE SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, ' '); } SE 232 need (enc, spaces);
152#define NL SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, '\n'); } SE 233 memset (enc->cur, ' ', spaces);
153#define COMMA SB \ 234 enc->cur += spaces;
235 }
236}
237
238static void
239encode_space (enc_t *enc)
240{
241 need (enc, 1);
154 encode_ch (enc, ','); \ 242 encode_ch (enc, ' ');
243}
244
245static void
246encode_nl (enc_t *enc)
247{
155 if (enc->flags & F_INDENT) \ 248 if (enc->flags & F_INDENT)
156 NL; \ 249 {
250 need (enc, 1);
251 encode_ch (enc, '\n');
252 }
253}
254
255static void
256encode_comma (enc_t *enc)
257{
258 encode_ch (enc, ',');
259
260 if (enc->flags & F_INDENT)
261 encode_nl (enc);
157 else if (enc->flags & F_SPACE_AFTER) \ 262 else if (enc->flags & F_SPACE_AFTER)
158 SPACE; \ 263 encode_space (enc);
159 SE 264}
160 265
161static void encode_sv (enc_t *enc, SV *sv); 266static void encode_sv (enc_t *enc, SV *sv);
162 267
163static void 268static void
164encode_av (enc_t *enc, AV *av) 269encode_av (enc_t *enc, AV *av)
165{ 270{
166 int i, len = av_len (av); 271 int i, len = av_len (av);
167 272
168 encode_ch (enc, '['); NL; 273 if (enc->indent >= enc->maxdepth)
274 croak ("data structure too deep (hit recursion limit)");
275
276 encode_ch (enc, '['); encode_nl (enc);
169 ++enc->indent; 277 ++enc->indent;
170 278
171 for (i = 0; i <= len; ++i) 279 for (i = 0; i <= len; ++i)
172 { 280 {
173 INDENT; 281 encode_indent (enc);
174 encode_sv (enc, *av_fetch (av, i, 0)); 282 encode_sv (enc, *av_fetch (av, i, 0));
175 283
176 if (i < len) 284 if (i < len)
177 COMMA; 285 encode_comma (enc);
178 } 286 }
179 287
180 NL; 288 encode_nl (enc);
181 289
182 --enc->indent; 290 --enc->indent;
183 INDENT; encode_ch (enc, ']'); 291 encode_indent (enc); encode_ch (enc, ']');
184} 292}
185 293
186static void 294static void
187encode_he (enc_t *enc, HE *he) 295encode_he (enc_t *enc, HE *he)
188{ 296{
… …
190 298
191 if (HeKLEN (he) == HEf_SVKEY) 299 if (HeKLEN (he) == HEf_SVKEY)
192 { 300 {
193 SV *sv = HeSVKEY (he); 301 SV *sv = HeSVKEY (he);
194 STRLEN len; 302 STRLEN len;
303 char *str;
304
305 SvGETMAGIC (sv);
195 char *str = SvPV (sv, len); 306 str = SvPV (sv, len);
196 307
197 encode_str (enc, str, len, SvUTF8 (sv)); 308 encode_str (enc, str, len, SvUTF8 (sv));
198 } 309 }
199 else 310 else
200 encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); 311 encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
201 312
202 encode_ch (enc, '"'); 313 encode_ch (enc, '"');
203 314
204 if (enc->flags & F_SPACE_BEFORE) SPACE; 315 if (enc->flags & F_SPACE_BEFORE) encode_space (enc);
205 encode_ch (enc, ':'); 316 encode_ch (enc, ':');
206 if (enc->flags & F_SPACE_AFTER ) SPACE; 317 if (enc->flags & F_SPACE_AFTER ) encode_space (enc);
207 encode_sv (enc, HeVAL (he)); 318 encode_sv (enc, HeVAL (he));
208} 319}
209 320
210// compare hash entries, used when all keys are bytestrings 321// compare hash entries, used when all keys are bytestrings
211static int 322static int
… …
217 HE *b = *(HE **)b_; 328 HE *b = *(HE **)b_;
218 329
219 STRLEN la = HeKLEN (a); 330 STRLEN la = HeKLEN (a);
220 STRLEN lb = HeKLEN (b); 331 STRLEN lb = HeKLEN (b);
221 332
222 if (!(cmp == memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) 333 if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))
223 cmp = la < lb ? -1 : la == lb ? 0 : 1; 334 cmp = la - lb;
224 335
225 return cmp; 336 return cmp;
226} 337}
227 338
228// compare hash entries, used when some keys are sv's or utf-x 339// compare hash entries, used when some keys are sv's or utf-x
… …
235static void 346static void
236encode_hv (enc_t *enc, HV *hv) 347encode_hv (enc_t *enc, HV *hv)
237{ 348{
238 int count, i; 349 int count, i;
239 350
351 if (enc->indent >= enc->maxdepth)
352 croak ("data structure too deep (hit recursion limit)");
353
240 encode_ch (enc, '{'); NL; ++enc->indent; 354 encode_ch (enc, '{'); encode_nl (enc); ++enc->indent;
241 355
242 if ((count = hv_iterinit (hv))) 356 if ((count = hv_iterinit (hv)))
243 { 357 {
244 // for canonical output we have to sort by keys first 358 // for canonical output we have to sort by keys first
245 // actually, this is mostly due to the stupid so-called 359 // actually, this is mostly due to the stupid so-called
246 // security workaround added somewhere in 5.8.x. 360 // security workaround added somewhere in 5.8.x.
247 // that randomises hash orderings 361 // that randomises hash orderings
248 if (enc->flags & F_CANONICAL) 362 if (enc->flags & F_CANONICAL)
249 { 363 {
250 HE *he, *hes [count]; 364 HE *he, *hes [count]; // if your compiler dies here, you need to enable C99 mode
251 int fast = 1; 365 int fast = 1;
252 366
253 i = 0; 367 i = 0;
254 while ((he = hv_iternext (hv))) 368 while ((he = hv_iternext (hv)))
255 { 369 {
… …
262 376
263 if (fast) 377 if (fast)
264 qsort (hes, count, sizeof (HE *), he_cmp_fast); 378 qsort (hes, count, sizeof (HE *), he_cmp_fast);
265 else 379 else
266 { 380 {
267 // hack to disable "use bytes" 381 // hack to forcefully disable "use bytes"
268 COP *oldcop = PL_curcop, cop; 382 COP cop = *PL_curcop;
269 cop.op_private = 0; 383 cop.op_private = 0;
384
385 ENTER;
386 SAVETMPS;
387
388 SAVEVPTR (PL_curcop);
270 PL_curcop = &cop; 389 PL_curcop = &cop;
271 390
272 SAVETMPS;
273 qsort (hes, count, sizeof (HE *), he_cmp_slow); 391 qsort (hes, count, sizeof (HE *), he_cmp_slow);
392
274 FREETMPS; 393 FREETMPS;
275 394 LEAVE;
276 PL_curcop = oldcop;
277 } 395 }
278 396
279 for (i = 0; i < count; ++i) 397 for (i = 0; i < count; ++i)
280 { 398 {
281 INDENT; 399 encode_indent (enc);
282 encode_he (enc, hes [i]); 400 encode_he (enc, hes [i]);
283 401
284 if (i < count - 1) 402 if (i < count - 1)
285 COMMA; 403 encode_comma (enc);
286 } 404 }
287 405
288 NL; 406 encode_nl (enc);
289 } 407 }
290 else 408 else
291 { 409 {
292 SV *sv; 410 SV *sv;
293 HE *he = hv_iternext (hv); 411 HE *he = hv_iternext (hv);
294 412
295 for (;;) 413 for (;;)
296 { 414 {
297 INDENT; 415 encode_indent (enc);
298 encode_he (enc, he); 416 encode_he (enc, he);
299 417
300 if (!(he = hv_iternext (hv))) 418 if (!(he = hv_iternext (hv)))
301 break; 419 break;
302 420
303 COMMA; 421 encode_comma (enc);
304 } 422 }
305 423
306 NL; 424 encode_nl (enc);
307 } 425 }
308 } 426 }
309 427
310 --enc->indent; INDENT; encode_ch (enc, '}'); 428 --enc->indent; encode_indent (enc); encode_ch (enc, '}');
429}
430
431// encode objects, arrays and special \0=false and \1=true values.
432static void
433encode_rv (enc_t *enc, SV *sv)
434{
435 SvGETMAGIC (sv);
436
437 svtype svt = SvTYPE (sv);
438
439 if (svt == SVt_PVHV)
440 encode_hv (enc, (HV *)sv);
441 else if (svt == SVt_PVAV)
442 encode_av (enc, (AV *)sv);
443 else if (svt < SVt_PVAV)
444 {
445 if (SvNIOK (sv) && SvIV (sv) == 0)
446 encode_str (enc, "false", 5, 0);
447 else if (SvNIOK (sv) && SvIV (sv) == 1)
448 encode_str (enc, "true", 4, 0);
449 else
450 croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
451 SvPV_nolen (sv_2mortal (newRV_inc (sv))));
452 }
453 else
454 croak ("encountered %s, but JSON can only represent references to arrays or hashes",
455 SvPV_nolen (sv_2mortal (newRV_inc (sv))));
311} 456}
312 457
313static void 458static void
314encode_sv (enc_t *enc, SV *sv) 459encode_sv (enc_t *enc, SV *sv)
315{ 460{
461 SvGETMAGIC (sv);
462
316 if (SvPOKp (sv)) 463 if (SvPOKp (sv))
317 { 464 {
318 STRLEN len; 465 STRLEN len;
319 char *str = SvPV (sv, len); 466 char *str = SvPV (sv, len);
320 encode_ch (enc, '"'); 467 encode_ch (enc, '"');
… …
334 SvIsUV(sv) 481 SvIsUV(sv)
335 ? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv)) 482 ? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))
336 : snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv)); 483 : snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));
337 } 484 }
338 else if (SvROK (sv)) 485 else if (SvROK (sv))
339 { 486 encode_rv (enc, SvRV (sv));
340 if (!--enc->max_recurse)
341 croak ("data structure too deep (hit recursion limit)");
342
343 sv = SvRV (sv);
344
345 switch (SvTYPE (sv))
346 {
347 case SVt_PVAV: encode_av (enc, (AV *)sv); break;
348 case SVt_PVHV: encode_hv (enc, (HV *)sv); break;
349
350 default:
351 croak ("JSON can only represent references to arrays or hashes");
352 }
353 }
354 else if (!SvOK (sv)) 487 else if (!SvOK (sv))
355 encode_str (enc, "null", 4, 0); 488 encode_str (enc, "null", 4, 0);
356 else 489 else
357 croak ("encountered perl type that JSON cannot handle"); 490 croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
491 SvPV_nolen (sv), SvFLAGS (sv));
358} 492}
359 493
360static SV * 494static SV *
361encode_json (SV *scalar, UV flags) 495encode_json (SV *scalar, U32 flags)
362{ 496{
497 if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))
498 croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
499
363 enc_t enc; 500 enc_t enc;
364 enc.flags = flags; 501 enc.flags = flags;
365 enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); 502 enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
366 enc.cur = SvPVX (enc.sv); 503 enc.cur = SvPVX (enc.sv);
367 enc.end = SvEND (enc.sv); 504 enc.end = SvEND (enc.sv);
368 enc.max_recurse = 0;
369 enc.indent = 0; 505 enc.indent = 0;
506 enc.maxdepth = DEC_DEPTH (flags);
370 507
371 SvPOK_only (enc.sv); 508 SvPOK_only (enc.sv);
372 encode_sv (&enc, scalar); 509 encode_sv (&enc, scalar);
373 510
374 if (!(flags & (F_ASCII | F_UTF8))) 511 if (!(flags & (F_ASCII | F_UTF8)))
375 SvUTF8_on (enc.sv); 512 SvUTF8_on (enc.sv);
376 513
377 SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); 514 SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
515
516 if (enc.flags & F_SHRINK)
517 shrink (enc.sv);
518
378 return enc.sv; 519 return enc.sv;
379} 520}
380 521
381///////////////////////////////////////////////////////////////////////////// 522/////////////////////////////////////////////////////////////////////////////
523// decoder
382 524
383#define WS \ 525// structure used for decoding JSON
526typedef struct
527{
528 char *cur; // current parser pointer
529 char *end; // end of input string
530 const char *err; // parse error, if != 0
531 U32 flags; // F_*
532 U32 depth; // recursion depth
533 U32 maxdepth; // recursion depth limit
534} dec_t;
535
536static void
537decode_ws (dec_t *dec)
538{
384 for (;;) \ 539 for (;;)
385 { \ 540 {
386 char ch = *dec->cur; \ 541 char ch = *dec->cur;
542
387 if (ch > 0x20 \ 543 if (ch > 0x20
388 || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) \ 544 || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09))
389 break; \ 545 break;
546
390 ++dec->cur; \ 547 ++dec->cur;
391 } 548 }
549}
392 550
393#define ERR(reason) SB dec->err = reason; goto fail; SE 551#define ERR(reason) SB dec->err = reason; goto fail; SE
552
394#define EXPECT_CH(ch) SB \ 553#define EXPECT_CH(ch) SB \
395 if (*dec->cur != ch) \ 554 if (*dec->cur != ch) \
396 ERR (# ch " expected"); \ 555 ERR (# ch " expected"); \
397 ++dec->cur; \ 556 ++dec->cur; \
398 SE 557 SE
399 558
559#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")
560#define DEC_DEC_DEPTH --dec->depth
561
400static SV *decode_sv (dec_t *dec); 562static SV *decode_sv (dec_t *dec);
401
402#define APPEND_CH(ch) SB \
403 SvGROW (sv, cur + 1 + 1); \
404 SvPVX (sv)[cur++] = (ch); \
405 SE
406 563
407static signed char decode_hexdigit[256]; 564static signed char decode_hexdigit[256];
408 565
409static UV 566static UV
410decode_4hex (dec_t *dec) 567decode_4hex (dec_t *dec)
411{ 568{
412 signed char d1, d2, d3, d4; 569 signed char d1, d2, d3, d4;
570 unsigned char *cur = (unsigned char *)dec->cur;
413 571
414 d1 = decode_hexdigit [((unsigned char *)dec->cur) [0]];
415 if (d1 < 0) ERR ("four hexadecimal digits expected"); 572 d1 = decode_hexdigit [cur [0]]; if (d1 < 0) ERR ("four hexadecimal digits expected");
416 d2 = decode_hexdigit [((unsigned char *)dec->cur) [1]];
417 if (d2 < 0) ERR ("four hexadecimal digits expected"); 573 d2 = decode_hexdigit [cur [1]]; if (d2 < 0) ERR ("four hexadecimal digits expected");
418 d3 = decode_hexdigit [((unsigned char *)dec->cur) [2]];
419 if (d3 < 0) ERR ("four hexadecimal digits expected"); 574 d3 = decode_hexdigit [cur [2]]; if (d3 < 0) ERR ("four hexadecimal digits expected");
420 d4 = decode_hexdigit [((unsigned char *)dec->cur) [3]];
421 if (d4 < 0) ERR ("four hexadecimal digits expected"); 575 d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected");
422 576
423 dec->cur += 4; 577 dec->cur += 4;
424 578
425 return ((UV)d1) << 12 579 return ((UV)d1) << 12
426 | ((UV)d2) << 8 580 | ((UV)d2) << 8
… …
432} 586}
433 587
434static SV * 588static SV *
435decode_str (dec_t *dec) 589decode_str (dec_t *dec)
436{ 590{
437 SV *sv = NEWSV (0,2); 591 SV *sv = 0;
438 STRLEN cur = 0;
439 int utf8 = 0; 592 int utf8 = 0;
440 593
441 for (;;) 594 do
442 { 595 {
443 unsigned char ch = *(unsigned char *)dec->cur; 596 char buf [SHORT_STRING_LEN + UTF8_MAX_LEN];
597 char *cur = buf;
444 598
445 if (ch == '"') 599 do
446 break;
447 else if (ch == '\\')
448 { 600 {
449 switch (*++dec->cur) 601 unsigned char ch = *(unsigned char *)dec->cur++;
602
603 if (ch == '"')
450 { 604 {
451 case '\\': 605 --dec->cur;
452 case '/': 606 break;
453 case '"': APPEND_CH (*dec->cur++); break; 607 }
454 608 else if (ch == '\\')
455 case 'b': APPEND_CH ('\010'); ++dec->cur; break; 609 {
456 case 't': APPEND_CH ('\011'); ++dec->cur; break; 610 switch (*dec->cur)
457 case 'n': APPEND_CH ('\012'); ++dec->cur; break;
458 case 'f': APPEND_CH ('\014'); ++dec->cur; break;
459 case 'r': APPEND_CH ('\015'); ++dec->cur; break;
460
461 case 'u':
462 { 611 {
463 UV lo, hi; 612 case '\\':
464 ++dec->cur; 613 case '/':
614 case '"': *cur++ = *dec->cur++; break;
465 615
466 hi = decode_4hex (dec); 616 case 'b': ++dec->cur; *cur++ = '\010'; break;
467 if (hi == (UV)-1) 617 case 't': ++dec->cur; *cur++ = '\011'; break;
468 goto fail; 618 case 'n': ++dec->cur; *cur++ = '\012'; break;
619 case 'f': ++dec->cur; *cur++ = '\014'; break;
620 case 'r': ++dec->cur; *cur++ = '\015'; break;
469 621
470 // possibly a surrogate pair 622 case 'u':
471 if (hi >= 0xd800 && hi < 0xdc00)
472 { 623 {
473 if (dec->cur [0] != '\\' || dec->cur [1] != 'u') 624 UV lo, hi;
474 ERR ("illegal surrogate character");
475
476 dec->cur += 2; 625 ++dec->cur;
477 626
478 lo = decode_4hex (dec); 627 hi = decode_4hex (dec);
479 if (lo == (UV)-1) 628 if (hi == (UV)-1)
480 goto fail; 629 goto fail;
481 630
631 // possibly a surrogate pair
632 if (hi >= 0xd800)
633 if (hi < 0xdc00)
634 {
635 if (dec->cur [0] != '\\' || dec->cur [1] != 'u')
636 ERR ("missing low surrogate character in surrogate pair");
637
638 dec->cur += 2;
639
640 lo = decode_4hex (dec);
641 if (lo == (UV)-1)
642 goto fail;
643
482 if (lo < 0xdc00 || lo >= 0xe000) 644 if (lo < 0xdc00 || lo >= 0xe000)
483 ERR ("surrogate pair expected"); 645 ERR ("surrogate pair expected");
484 646
485 hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000; 647 hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000;
648 }
649 else if (hi < 0xe000)
650 ERR ("missing high surrogate character in surrogate pair");
651
652 if (hi >= 0x80)
653 {
654 utf8 = 1;
655
656 cur = (char *)uvuni_to_utf8_flags (cur, hi, 0);
657 }
658 else
659 *cur++ = hi;
486 } 660 }
487 else if (lo >= 0xdc00 && lo < 0xe000)
488 ERR ("illegal surrogate character");
489
490 if (hi >= 0x80)
491 { 661 break;
492 utf8 = 1;
493 662
494 SvGROW (sv, cur + 4 + 1); // at most 4 bytes for 21 bits
495 cur = (char *)uvuni_to_utf8_flags (SvPVX (sv) + cur, hi, 0) - SvPVX (sv);
496 }
497 else 663 default:
498 APPEND_CH (hi); 664 --dec->cur;
665 ERR ("illegal backslash escape sequence in string");
499 } 666 }
500 break;
501 } 667 }
668 else if (ch >= 0x20 && ch <= 0x7f)
669 *cur++ = ch;
670 else if (ch >= 0x80)
671 {
672 --dec->cur;
673
674 STRLEN clen;
675 UV uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen);
676 if (clen == (STRLEN)-1)
677 ERR ("malformed UTF-8 character in JSON string");
678
679 do
680 {
681 *cur++ = *dec->cur++;
682 }
683 while (--clen);
684
685 utf8 = 1;
686 }
687 else if (!ch)
688 ERR ("unexpected end of string while parsing json string");
689 else
690 ERR ("invalid character encountered");
691
502 } 692 }
503 else if (ch >= 0x20 && ch <= 0x7f) 693 while (cur < buf + SHORT_STRING_LEN);
504 APPEND_CH (*dec->cur++); 694
505 else if (ch >= 0x80) 695 STRLEN len = cur - buf;
696
697 if (sv)
506 { 698 {
507 STRLEN clen; 699 SvGROW (sv, SvCUR (sv) + len + 1);
508 UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY); 700 memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
509 if (clen < 0) 701 SvCUR_set (sv, SvCUR (sv) + len);
510 ERR ("malformed UTF-8 character in string, cannot convert to JSON");
511
512 SvGROW (sv, cur + clen + 1); // at most 4 bytes for 21 bits
513 memcpy (SvPVX (sv) + cur, dec->cur, clen);
514 dec->cur += clen;
515 } 702 }
516 else 703 else
517 ERR ("invalid character encountered"); 704 sv = newSVpvn (buf, len);
518 } 705 }
706 while (*dec->cur != '"');
519 707
520 ++dec->cur; 708 ++dec->cur;
521 709
710 if (sv)
711 {
522 SvPOK_only (sv); 712 SvPOK_only (sv);
523
524 SvCUR_set (sv, cur);
525 *SvEND (sv) = 0; 713 *SvEND (sv) = 0;
526 714
527 if (utf8) 715 if (utf8)
528 SvUTF8_on (sv); 716 SvUTF8_on (sv);
717 }
718 else
719 sv = newSVpvn ("", 0);
529 720
530 return sv; 721 return sv;
531 722
532fail: 723fail:
533 SvREFCNT_dec (sv);
534 return 0; 724 return 0;
535} 725}
536 726
537static SV * 727static SV *
538decode_num (dec_t *dec) 728decode_num (dec_t *dec)
… …
548 { 738 {
549 ++dec->cur; 739 ++dec->cur;
550 if (*dec->cur >= '0' && *dec->cur <= '9') 740 if (*dec->cur >= '0' && *dec->cur <= '9')
551 ERR ("malformed number (leading zero must not be followed by another digit)"); 741 ERR ("malformed number (leading zero must not be followed by another digit)");
552 } 742 }
553 743 else if (*dec->cur < '0' || *dec->cur > '9')
554 // int 744 ERR ("malformed number (no digits after initial minus)");
745 else
746 do
747 {
748 ++dec->cur;
749 }
555 while (*dec->cur >= '0' && *dec->cur <= '9') 750 while (*dec->cur >= '0' && *dec->cur <= '9');
556 ++dec->cur;
557 751
558 // [frac] 752 // [frac]
559 if (*dec->cur == '.') 753 if (*dec->cur == '.')
560 { 754 {
561 is_nv = 1; 755 ++dec->cur;
756
757 if (*dec->cur < '0' || *dec->cur > '9')
758 ERR ("malformed number (no digits after decimal point)");
562 759
563 do 760 do
564 { 761 {
565 ++dec->cur; 762 ++dec->cur;
566 } 763 }
567 while (*dec->cur >= '0' && *dec->cur <= '9'); 764 while (*dec->cur >= '0' && *dec->cur <= '9');
765
766 is_nv = 1;
568 } 767 }
569 768
570 // [exp] 769 // [exp]
571 if (*dec->cur == 'e' || *dec->cur == 'E') 770 if (*dec->cur == 'e' || *dec->cur == 'E')
572 { 771 {
573 is_nv = 1;
574
575 ++dec->cur; 772 ++dec->cur;
773
576 if (*dec->cur == '-' || *dec->cur == '+') 774 if (*dec->cur == '-' || *dec->cur == '+')
577 ++dec->cur; 775 ++dec->cur;
578 776
777 if (*dec->cur < '0' || *dec->cur > '9')
778 ERR ("malformed number (no digits after exp sign)");
779
780 do
781 {
782 ++dec->cur;
783 }
579 while (*dec->cur >= '0' && *dec->cur <= '9') 784 while (*dec->cur >= '0' && *dec->cur <= '9');
580 ++dec->cur; 785
786 is_nv = 1;
581 } 787 }
582 788
583 if (!is_nv) 789 if (!is_nv)
584 { 790 {
585 UV uv; 791 UV uv;
… …
603static SV * 809static SV *
604decode_av (dec_t *dec) 810decode_av (dec_t *dec)
605{ 811{
606 AV *av = newAV (); 812 AV *av = newAV ();
607 813
814 DEC_INC_DEPTH;
815 decode_ws (dec);
816
817 if (*dec->cur == ']')
818 ++dec->cur;
819 else
608 for (;;) 820 for (;;)
609 { 821 {
610 SV *value; 822 SV *value;
611 823
612 value = decode_sv (dec); 824 value = decode_sv (dec);
613 if (!value) 825 if (!value)
614 goto fail; 826 goto fail;
615 827
616 av_push (av, value); 828 av_push (av, value);
617 829
618 WS; 830 decode_ws (dec);
619 831
620 if (*dec->cur == ']') 832 if (*dec->cur == ']')
621 { 833 {
622 ++dec->cur; 834 ++dec->cur;
623 break; 835 break;
836 }
624 } 837
625
626 if (*dec->cur != ',') 838 if (*dec->cur != ',')
627 ERR (", or ] expected while parsing array"); 839 ERR (", or ] expected while parsing array");
628 840
629 ++dec->cur; 841 ++dec->cur;
630 } 842 }
631 843
844 DEC_DEC_DEPTH;
632 return newRV_noinc ((SV *)av); 845 return newRV_noinc ((SV *)av);
633 846
634fail: 847fail:
635 SvREFCNT_dec (av); 848 SvREFCNT_dec (av);
849 DEC_DEC_DEPTH;
636 return 0; 850 return 0;
637} 851}
638 852
639static SV * 853static SV *
640decode_hv (dec_t *dec) 854decode_hv (dec_t *dec)
641{ 855{
642 HV *hv = newHV (); 856 HV *hv = newHV ();
643 857
858 DEC_INC_DEPTH;
859 decode_ws (dec);
860
861 if (*dec->cur == '}')
862 ++dec->cur;
863 else
644 for (;;) 864 for (;;)
645 { 865 {
646 SV *key, *value; 866 SV *key, *value;
647 867
648 WS; EXPECT_CH ('"'); 868 decode_ws (dec); EXPECT_CH ('"');
649 869
650 key = decode_str (dec); 870 key = decode_str (dec);
651 if (!key) 871 if (!key)
652 goto fail;
653
654 WS; EXPECT_CH (':');
655
656 value = decode_sv (dec);
657 if (!value)
658 {
659 SvREFCNT_dec (key);
660 goto fail; 872 goto fail;
873
874 decode_ws (dec); EXPECT_CH (':');
875
876 value = decode_sv (dec);
877 if (!value)
878 {
879 SvREFCNT_dec (key);
880 goto fail;
661 } 881 }
662 882
663 //TODO: optimise
664 hv_store_ent (hv, key, value, 0); 883 hv_store_ent (hv, key, value, 0);
884 SvREFCNT_dec (key);
665 885
666 WS; 886 decode_ws (dec);
667 887
668 if (*dec->cur == '}') 888 if (*dec->cur == '}')
669 { 889 {
670 ++dec->cur; 890 ++dec->cur;
671 break; 891 break;
672 } 892 }
673 893
674 if (*dec->cur != ',') 894 if (*dec->cur != ',')
675 ERR (", or } expected while parsing object/hash"); 895 ERR (", or } expected while parsing object/hash");
676 896
677 ++dec->cur; 897 ++dec->cur;
678 } 898 }
679 899
900 DEC_DEC_DEPTH;
680 return newRV_noinc ((SV *)hv); 901 return newRV_noinc ((SV *)hv);
681 902
682fail: 903fail:
683 SvREFCNT_dec (hv); 904 SvREFCNT_dec (hv);
905 DEC_DEC_DEPTH;
684 return 0; 906 return 0;
685} 907}
686 908
687static SV * 909static SV *
688decode_sv (dec_t *dec) 910decode_sv (dec_t *dec)
689{ 911{
690 WS; 912 decode_ws (dec);
691 switch (*dec->cur) 913 switch (*dec->cur)
692 { 914 {
693 case '"': ++dec->cur; return decode_str (dec); 915 case '"': ++dec->cur; return decode_str (dec);
694 case '[': ++dec->cur; return decode_av (dec); 916 case '[': ++dec->cur; return decode_av (dec);
695 case '{': ++dec->cur; return decode_hv (dec); 917 case '{': ++dec->cur; return decode_hv (dec);
… …
723 945
724 case 'n': 946 case 'n':
725 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) 947 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
726 { 948 {
727 dec->cur += 4; 949 dec->cur += 4;
728 return newSViv (1); 950 return newSVsv (&PL_sv_undef);
729 } 951 }
730 else 952 else
731 ERR ("'null' expected"); 953 ERR ("'null' expected");
732 954
733 break; 955 break;
734 956
735 default: 957 default:
736 ERR ("malformed json string"); 958 ERR ("malformed json string, neither array, object, number, string or atom");
737 break; 959 break;
738 } 960 }
739 961
740fail: 962fail:
741 return 0; 963 return 0;
742} 964}
743 965
744static SV * 966static SV *
745decode_json (SV *string, UV flags) 967decode_json (SV *string, U32 flags)
746{ 968{
747 SV *sv; 969 SV *sv;
748 970
749 if (!(flags & F_UTF8)) 971 if (flags & F_UTF8)
972 sv_utf8_downgrade (string, 0);
973 else
750 sv_utf8_upgrade (string); 974 sv_utf8_upgrade (string);
751 975
752 SvGROW (string, SvCUR (string) + 1); // should basically be a NOP 976 SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
753 977
754 dec_t dec; 978 dec_t dec;
755 dec.flags = flags; 979 dec.flags = flags;
756 dec.cur = SvPVX (string); 980 dec.cur = SvPVX (string);
757 dec.end = SvEND (string); 981 dec.end = SvEND (string);
758 dec.err = 0; 982 dec.err = 0;
983 dec.depth = 0;
984 dec.maxdepth = DEC_DEPTH (dec.flags);
759 985
760 *dec.end = 1; // invalid anywhere 986 *dec.end = 0; // this should basically be a nop, too, but make sure its there
761 sv = decode_sv (&dec); 987 sv = decode_sv (&dec);
762 *dec.end = 0;
763 988
764 if (!sv) 989 if (!sv)
765 { 990 {
991 IV offset = dec.flags & F_UTF8
992 ? dec.cur - SvPVX (string)
766 IV offset = utf8_distance (dec.cur, SvPVX (string)); 993 : utf8_distance (dec.cur, SvPVX (string));
767 SV *uni = sv_newmortal (); 994 SV *uni = sv_newmortal ();
768 995
996 // horrible hack to silence warning inside pv_uni_display
997 COP cop = *PL_curcop;
998 cop.cop_warnings = pWARN_NONE;
999 ENTER;
1000 SAVEVPTR (PL_curcop);
1001 PL_curcop = &cop;
769 pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); 1002 pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1003 LEAVE;
1004
770 croak ("%s, at character %d (%s)", 1005 croak ("%s, at character offset %d (%s)",
771 dec.err, 1006 dec.err,
772 (int)offset, 1007 (int)offset,
773 dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); 1008 dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
774 } 1009 }
775 1010
776 sv_dump (sv);//D
777 return sv_2mortal (sv); 1011 sv = sv_2mortal (sv);
1012
1013 if (!(dec.flags & F_ALLOW_NONREF) && !SvROK (sv))
1014 croak ("JSON text must be an object or array (but found number, string, true, false or null, use allow_nonref to allow this)");
1015
1016 return sv;
778} 1017}
1018
1019/////////////////////////////////////////////////////////////////////////////
1020// XS interface functions
779 1021
780MODULE = JSON::XS PACKAGE = JSON::XS 1022MODULE = JSON::XS PACKAGE = JSON::XS
781 1023
782BOOT: 1024BOOT:
783{ 1025{
784 int i; 1026 int i;
785 1027
786 memset (decode_hexdigit, 0xff, 256); 1028 memset (decode_hexdigit, 0xff, 256);
1029
787 for (i = 10; i--; ) 1030 for (i = 0; i < 256; ++i)
788 decode_hexdigit ['0' + i] = i; 1031 decode_hexdigit [i] =
789 1032 i >= '0' && i <= '9' ? i - '0'
790 for (i = 6; --i; ) 1033 : i >= 'a' && i <= 'f' ? i - 'a' + 10
791 { 1034 : i >= 'A' && i <= 'F' ? i - 'A' + 10
792 decode_hexdigit ['a' + i] = 10 + i; 1035 : -1;
793 decode_hexdigit ['A' + i] = 10 + i;
794 }
795 1036
796 json_stash = gv_stashpv ("JSON::XS", 1); 1037 json_stash = gv_stashpv ("JSON::XS", 1);
797} 1038}
1039
1040PROTOTYPES: DISABLE
798 1041
799SV *new (char *dummy) 1042SV *new (char *dummy)
800 CODE: 1043 CODE:
801 RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash); 1044 RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);
802 OUTPUT: 1045 OUTPUT:
803 RETVAL 1046 RETVAL
804 1047
805SV *ascii (SV *self, int enable) 1048SV *ascii (SV *self, int enable = 1)
806 ALIAS: 1049 ALIAS:
807 ascii = F_ASCII 1050 ascii = F_ASCII
808 utf8 = F_UTF8 1051 utf8 = F_UTF8
809 indent = F_INDENT 1052 indent = F_INDENT
810 canonical = F_CANONICAL 1053 canonical = F_CANONICAL
811 space_before = F_SPACE_BEFORE 1054 space_before = F_SPACE_BEFORE
812 space_after = F_SPACE_AFTER 1055 space_after = F_SPACE_AFTER
813 json_rpc = F_JSON_RPC 1056 pretty = F_PRETTY
1057 allow_nonref = F_ALLOW_NONREF
1058 shrink = F_SHRINK
814 CODE: 1059 CODE:
815{ 1060{
816 UV *uv = SvJSON (self); 1061 UV *uv = SvJSON (self);
817 if (enable) 1062 if (enable)
818 *uv |= ix; 1063 *uv |= ix;
… …
822 RETVAL = newSVsv (self); 1067 RETVAL = newSVsv (self);
823} 1068}
824 OUTPUT: 1069 OUTPUT:
825 RETVAL 1070 RETVAL
826 1071
1072SV *max_depth (SV *self, int max_depth = 0x80000000UL)
1073 CODE:
1074{
1075 UV *uv = SvJSON (self);
1076 UV log2 = 0;
1077
1078 if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1079
1080 while ((1UL << log2) < max_depth)
1081 ++log2;
1082
1083 *uv = *uv & ~F_MAXDEPTH | (log2 << S_MAXDEPTH);
1084
1085 RETVAL = newSVsv (self);
1086}
1087 OUTPUT:
1088 RETVAL
1089
827void encode (SV *self, SV *scalar) 1090void encode (SV *self, SV *scalar)
828 PPCODE: 1091 PPCODE:
829 XPUSHs (encode_json (scalar, *SvJSON (self))); 1092 XPUSHs (encode_json (scalar, *SvJSON (self)));
830 1093
831void decode (SV *self, SV *jsondata) 1094void decode (SV *self, SV *jsonstr)
832 PPCODE: 1095 PPCODE:
833 XPUSHs (decode_json (jsondata, *SvJSON (self))); 1096 XPUSHs (decode_json (jsonstr, *SvJSON (self)));
834 1097
1098PROTOTYPES: ENABLE
1099
1100void to_json (SV *scalar)
1101 ALIAS:
1102 objToJson = 0
1103 PPCODE:
1104 XPUSHs (encode_json (scalar, F_DEFAULT | F_UTF8));
1105
1106void from_json (SV *jsonstr)
1107 ALIAS:
1108 jsonToObj = 0
1109 PPCODE:
1110 XPUSHs (decode_json (jsonstr, F_DEFAULT | F_UTF8));
1111

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