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Comparing JSON-XS/XS.xs (file contents):
Revision 1.2 by root, Thu Mar 22 17:28:50 2007 UTC vs.
Revision 1.27 by root, Mon Apr 9 05:09:57 2007 UTC

… …
3#include "XSUB.h" 3#include "XSUB.h"
4 4
5#include "assert.h" 5#include "assert.h"
6#include "string.h" 6#include "string.h"
7#include "stdlib.h" 7#include "stdlib.h"
8#include "stdio.h"
8 9
10#if defined(__BORLANDC__) || defined(_MSC_VER)
11# define snprintf _snprintf // C compilers have this in stdio.h
12#endif
13
9#define F_ASCII 0x00000001 14#define F_ASCII 0x00000001UL
10#define F_UTF8 0x00000002 15#define F_UTF8 0x00000002UL
11#define F_INDENT 0x00000004 16#define F_INDENT 0x00000004UL
12#define F_CANONICAL 0x00000008 17#define F_CANONICAL 0x00000008UL
13#define F_SPACE_BEFORE 0x00000010 18#define F_SPACE_BEFORE 0x00000010UL
14#define F_SPACE_AFTER 0x00000020 19#define F_SPACE_AFTER 0x00000020UL
20#define F_ALLOW_NONREF 0x00000080UL
15#define F_JSON_RPC 0x00000040 21#define F_SHRINK 0x00000100UL
22#define F_MAXDEPTH 0xf8000000UL
23#define S_MAXDEPTH 27
24
25#define DEC_DEPTH(flags) (1UL << ((flags & F_MAXDEPTH) >> S_MAXDEPTH))
26
27// F_SELFCONVERT? <=> to_json/toJson
28// F_BLESSED? <=> { $__class__$ => }
16 29
17#define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER 30#define F_PRETTY F_INDENT | F_SPACE_BEFORE | F_SPACE_AFTER
18#define F_DEFAULT 0 31#define F_DEFAULT (9UL << S_MAXDEPTH)
19 32
20#define INIT_SIZE 32 // initial scalar size to be allocated 33#define INIT_SIZE 32 // initial scalar size to be allocated
34#define INDENT_STEP 3 // spaces per indentation level
35
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
21 38
22#define SB do { 39#define SB do {
23#define SE } while (0) 40#define SE } while (0)
24 41
25static HV *json_stash; 42static HV *json_stash; // JSON::XS::
43
44/////////////////////////////////////////////////////////////////////////////
45// utility functions
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
56static void
57shrink (SV *sv)
58{
59 sv_utf8_downgrade (sv, 1);
60 if (SvLEN (sv) > SvCUR (sv) + 1)
61 {
62#ifdef SvPV_shrink_to_cur
63 SvPV_shrink_to_cur (sv);
64#elif defined (SvPV_renew)
65 SvPV_renew (sv, SvCUR (sv) + 1);
66#endif
67 }
68}
69
70// decode an utf-8 character and return it, or (UV)-1 in
71// case of an error.
72// we special-case "safe" characters from U+80 .. U+7FF,
73// but use the very good perl function to parse anything else.
74// note that we never call this function for a ascii codepoints
75static UV
76decode_utf8 (unsigned char *s, STRLEN len, STRLEN *clen)
77{
78 if (s[0] > 0xdf || s[0] < 0xc2)
79 return utf8n_to_uvuni (s, len, clen, UTF8_CHECK_ONLY);
80 else if (len > 1 && s[1] >= 0x80 && s[1] <= 0xbf)
81 {
82 *clen = 2;
83 return ((s[0] & 0x1f) << 6) | (s[1] & 0x3f);
84 }
85 else
86 {
87 *clen = (STRLEN)-1;
88 return (UV)-1;
89 }
90}
91
92/////////////////////////////////////////////////////////////////////////////
93// encoder
26 94
27// structure used for encoding JSON 95// structure used for encoding JSON
28typedef struct 96typedef struct
29{ 97{
30 char *cur; 98 char *cur; // SvPVX (sv) + current output position
31 STRLEN len; // SvLEN (sv)
32 char *end; // SvEND (sv) 99 char *end; // SvEND (sv)
33 SV *sv; 100 SV *sv; // result scalar
34 UV flags; 101 U32 flags; // F_*
35 int max_recurse; 102 U32 indent; // indentation level
36 int indent; 103 U32 maxdepth; // max. indentation/recursion level
37} enc_t; 104} enc_t;
38
39// structure used for decoding JSON
40typedef struct
41{
42 char *cur;
43 char *end;
44 char *err;
45 UV flags;
46} dec_t;
47
48static UV *
49SvJSON (SV *sv)
50{
51 if (!(SvROK (sv) && SvOBJECT (SvRV (sv)) && SvSTASH (SvRV (sv)) == json_stash))
52 croak ("object is not of type JSON::XS");
53
54 return &SvUVX (SvRV (sv));
55}
56
57/////////////////////////////////////////////////////////////////////////////
58 105
59static void 106static void
60need (enc_t *enc, STRLEN len) 107need (enc_t *enc, STRLEN len)
61{ 108{
62 if (enc->cur + len >= enc->end) 109 if (enc->cur + len >= enc->end)
63 { 110 {
64 STRLEN cur = enc->cur - SvPVX (enc->sv); 111 STRLEN cur = enc->cur - SvPVX (enc->sv);
65 SvGROW (enc->sv, cur + len + 1); 112 SvGROW (enc->sv, cur + len + 1);
66 enc->cur = SvPVX (enc->sv) + cur; 113 enc->cur = SvPVX (enc->sv) + cur;
67 enc->end = SvEND (enc->sv); 114 enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1;
68 } 115 }
69} 116}
70 117
71static void 118static void
72encode_ch (enc_t *enc, char ch) 119encode_ch (enc_t *enc, char ch)
… …
78static void 125static void
79encode_str (enc_t *enc, char *str, STRLEN len, int is_utf8) 126encode_str (enc_t *enc, char *str, STRLEN len, int is_utf8)
80{ 127{
81 char *end = str + len; 128 char *end = str + len;
82 129
130 need (enc, len);
131
83 while (str < end) 132 while (str < end)
84 { 133 {
85 unsigned char ch = *(unsigned char *)str; 134 unsigned char ch = *(unsigned char *)str;
135
86 if (ch >= 0x20 && ch < 0x80) // most common case 136 if (ch >= 0x20 && ch < 0x80) // most common case
87 { 137 {
138 if (ch == '"') // but with slow exceptions
139 {
140 need (enc, len += 1);
141 *enc->cur++ = '\\';
142 *enc->cur++ = '"';
143 }
144 else if (ch == '\\')
145 {
146 need (enc, len += 1);
147 *enc->cur++ = '\\';
148 *enc->cur++ = '\\';
149 }
150 else
88 *enc->cur++ = ch; 151 *enc->cur++ = ch;
152
89 str++; 153 ++str;
90 } 154 }
91 else 155 else
92 { 156 {
93 STRLEN clen; 157 switch (ch)
94 UV uch;
95
96 if (is_utf8)
97 { 158 {
98 uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY); 159 case '\010': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'b'; ++str; break;
99 if (clen < 0) 160 case '\011': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 't'; ++str; break;
100 croak ("malformed UTF-8 character in string, cannot convert to JSON"); 161 case '\012': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'n'; ++str; break;
101 } 162 case '\014': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'f'; ++str; break;
102 else 163 case '\015': need (enc, len += 1); *enc->cur++ = '\\'; *enc->cur++ = 'r'; ++str; break;
103 {
104 uch = ch;
105 clen = 1;
106 }
107 164
108 need (enc, len += 6); 165 default:
109
110 if (uch < 0xa0 || enc->flags & F_ASCII)
111 {
112 if (uch > 0xFFFFUL)
113 { 166 {
167 STRLEN clen;
168 UV uch;
169
170 if (is_utf8)
171 {
172 //uch = utf8n_to_uvuni (str, end - str, &clen, UTF8_CHECK_ONLY);
173 uch = decode_utf8 (str, end - str, &clen);
174 if (clen == (STRLEN)-1)
175 croak ("malformed or illegal unicode character in string [%.11s], cannot convert to JSON", str);
176 }
177 else
178 {
179 uch = ch;
114 len += 6; 180 clen = 1;
181 }
182
183 if (uch > 0x10FFFFUL)
184 croak ("out of range codepoint (0x%lx) encountered, unrepresentable in JSON", (unsigned long)uch);
185
186 if (uch < 0x80 || enc->flags & F_ASCII)
187 {
188 if (uch > 0xFFFFUL)
189 {
115 need (enc, len += 6); 190 need (enc, len += 11);
116 sprintf (enc->cur, "\\u%04x\\u%04x", 191 sprintf (enc->cur, "\\u%04x\\u%04x",
117 (uch - 0x10000) / 0x400 + 0xD800, 192 (int)((uch - 0x10000) / 0x400 + 0xD800),
118 (uch - 0x10000) % 0x400 + 0xDC00); 193 (int)((uch - 0x10000) % 0x400 + 0xDC00));
119 enc->cur += 12; 194 enc->cur += 12;
195 }
196 else
197 {
198 static char hexdigit [16] = "0123456789abcdef";
199 need (enc, len += 5);
200 *enc->cur++ = '\\';
201 *enc->cur++ = 'u';
202 *enc->cur++ = hexdigit [ uch >> 12 ];
203 *enc->cur++ = hexdigit [(uch >> 8) & 15];
204 *enc->cur++ = hexdigit [(uch >> 4) & 15];
205 *enc->cur++ = hexdigit [(uch >> 0) & 15];
206 }
207
208 str += clen;
120 } 209 }
210 else if (is_utf8)
211 {
212 need (enc, len += clen);
213 do
214 {
215 *enc->cur++ = *str++;
216 }
217 while (--clen);
218 }
121 else 219 else
122 { 220 {
123 sprintf (enc->cur, "\\u%04x", uch); 221 need (enc, len += UTF8_MAX_LEN - 1); // never more than 11 bytes needed
124 enc->cur += 6; 222 enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
223 ++str;
224 }
125 } 225 }
126 } 226 }
127 else if (is_utf8)
128 {
129 memcpy (enc->cur, str, clen);
130 enc->cur += clen;
131 }
132 else
133 enc->cur = uvuni_to_utf8_flags (enc->cur, uch, 0);
134
135 str += clen;
136 } 227 }
137 228
138 --len; 229 --len;
139 } 230 }
140} 231}
141 232
142#define INDENT SB \ 233static void
234encode_indent (enc_t *enc)
235{
143 if (enc->flags & F_INDENT) \ 236 if (enc->flags & F_INDENT)
144 { \ 237 {
145 int i_; \ 238 int spaces = enc->indent * INDENT_STEP;
146 need (enc, enc->indent); \
147 for (i_ = enc->indent * 3; i_--; )\
148 encode_ch (enc, ' '); \
149 } \
150 SE
151 239
152#define SPACE SB need (enc, 1); encode_ch (enc, ' '); SE 240 need (enc, spaces);
153#define NL SB if (enc->flags & F_INDENT) { need (enc, 1); encode_ch (enc, '\n'); } SE 241 memset (enc->cur, ' ', spaces);
154#define COMMA SB \ 242 enc->cur += spaces;
243 }
244}
245
246static void
247encode_space (enc_t *enc)
248{
249 need (enc, 1);
155 encode_ch (enc, ','); \ 250 encode_ch (enc, ' ');
251}
252
253static void
254encode_nl (enc_t *enc)
255{
156 if (enc->flags & F_INDENT) \ 256 if (enc->flags & F_INDENT)
157 NL; \ 257 {
258 need (enc, 1);
259 encode_ch (enc, '\n');
260 }
261}
262
263static void
264encode_comma (enc_t *enc)
265{
266 encode_ch (enc, ',');
267
268 if (enc->flags & F_INDENT)
269 encode_nl (enc);
158 else if (enc->flags & F_SPACE_AFTER) \ 270 else if (enc->flags & F_SPACE_AFTER)
159 SPACE; \ 271 encode_space (enc);
160 SE 272}
161 273
162static void encode_sv (enc_t *enc, SV *sv); 274static void encode_sv (enc_t *enc, SV *sv);
163 275
164static void 276static void
165encode_av (enc_t *enc, AV *av) 277encode_av (enc_t *enc, AV *av)
166{ 278{
167 int i, len = av_len (av); 279 int i, len = av_len (av);
168 280
169 encode_ch (enc, '['); NL; 281 if (enc->indent >= enc->maxdepth)
282 croak ("data structure too deep (hit recursion limit)");
283
284 encode_ch (enc, '['); encode_nl (enc);
170 ++enc->indent; 285 ++enc->indent;
171 286
172 for (i = 0; i <= len; ++i) 287 for (i = 0; i <= len; ++i)
173 { 288 {
174 INDENT; 289 encode_indent (enc);
175 encode_sv (enc, *av_fetch (av, i, 0)); 290 encode_sv (enc, *av_fetch (av, i, 0));
176 291
177 if (i < len) 292 if (i < len)
178 COMMA; 293 encode_comma (enc);
179 } 294 }
180 295
181 NL; 296 encode_nl (enc);
182 297
183 --enc->indent; 298 --enc->indent;
184 INDENT; encode_ch (enc, ']'); 299 encode_indent (enc); encode_ch (enc, ']');
185} 300}
186 301
187static void 302static void
188encode_he (enc_t *enc, HE *he) 303encode_he (enc_t *enc, HE *he)
189{ 304{
… …
191 306
192 if (HeKLEN (he) == HEf_SVKEY) 307 if (HeKLEN (he) == HEf_SVKEY)
193 { 308 {
194 SV *sv = HeSVKEY (he); 309 SV *sv = HeSVKEY (he);
195 STRLEN len; 310 STRLEN len;
311 char *str;
312
313 SvGETMAGIC (sv);
196 char *str = SvPV (sv, len); 314 str = SvPV (sv, len);
197 315
198 encode_str (enc, str, len, SvUTF8 (sv)); 316 encode_str (enc, str, len, SvUTF8 (sv));
199 } 317 }
200 else 318 else
201 encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he)); 319 encode_str (enc, HeKEY (he), HeKLEN (he), HeKUTF8 (he));
202 320
203 encode_ch (enc, '"'); 321 encode_ch (enc, '"');
204 322
205 if (enc->flags & F_SPACE_BEFORE) SPACE; 323 if (enc->flags & F_SPACE_BEFORE) encode_space (enc);
206 encode_ch (enc, ':'); 324 encode_ch (enc, ':');
207 if (enc->flags & F_SPACE_AFTER ) SPACE; 325 if (enc->flags & F_SPACE_AFTER ) encode_space (enc);
208 encode_sv (enc, HeVAL (he)); 326 encode_sv (enc, HeVAL (he));
209} 327}
210 328
211// compare hash entries, used when all keys are bytestrings 329// compare hash entries, used when all keys are bytestrings
212static int 330static int
… …
218 HE *b = *(HE **)b_; 336 HE *b = *(HE **)b_;
219 337
220 STRLEN la = HeKLEN (a); 338 STRLEN la = HeKLEN (a);
221 STRLEN lb = HeKLEN (b); 339 STRLEN lb = HeKLEN (b);
222 340
223 if (!(cmp == memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb))) 341 if (!(cmp = memcmp (HeKEY (a), HeKEY (b), la < lb ? la : lb)))
224 cmp = la < lb ? -1 : la == lb ? 0 : 1; 342 cmp = la - lb;
225 343
226 return cmp; 344 return cmp;
227} 345}
228 346
229// compare hash entries, used when some keys are sv's or utf-x 347// compare hash entries, used when some keys are sv's or utf-x
… …
236static void 354static void
237encode_hv (enc_t *enc, HV *hv) 355encode_hv (enc_t *enc, HV *hv)
238{ 356{
239 int count, i; 357 int count, i;
240 358
359 if (enc->indent >= enc->maxdepth)
360 croak ("data structure too deep (hit recursion limit)");
361
241 encode_ch (enc, '{'); NL; ++enc->indent; 362 encode_ch (enc, '{'); encode_nl (enc); ++enc->indent;
242 363
243 if ((count = hv_iterinit (hv))) 364 if ((count = hv_iterinit (hv)))
244 { 365 {
245 // for canonical output we have to sort by keys first 366 // for canonical output we have to sort by keys first
246 // actually, this is mostly due to the stupid so-called 367 // actually, this is mostly due to the stupid so-called
247 // security workaround added somewhere in 5.8.x. 368 // security workaround added somewhere in 5.8.x.
248 // that randomises hash orderings 369 // that randomises hash orderings
249 if (enc->flags & F_CANONICAL) 370 if (enc->flags & F_CANONICAL)
250 { 371 {
251 HE *he, *hes [count]; 372 HE *he, *hes [count]; // if your compiler dies here, you need to enable C99 mode
252 int fast = 1; 373 int fast = 1;
253 374
254 i = 0; 375 i = 0;
255 while ((he = hv_iternext (hv))) 376 while ((he = hv_iternext (hv)))
256 { 377 {
… …
263 384
264 if (fast) 385 if (fast)
265 qsort (hes, count, sizeof (HE *), he_cmp_fast); 386 qsort (hes, count, sizeof (HE *), he_cmp_fast);
266 else 387 else
267 { 388 {
268 // hack to disable "use bytes" 389 // hack to forcefully disable "use bytes"
269 COP *oldcop = PL_curcop, cop; 390 COP cop = *PL_curcop;
270 cop.op_private = 0; 391 cop.op_private = 0;
392
393 ENTER;
394 SAVETMPS;
395
396 SAVEVPTR (PL_curcop);
271 PL_curcop = &cop; 397 PL_curcop = &cop;
272 398
273 SAVETMPS;
274 qsort (hes, count, sizeof (HE *), he_cmp_slow); 399 qsort (hes, count, sizeof (HE *), he_cmp_slow);
400
275 FREETMPS; 401 FREETMPS;
276 402 LEAVE;
277 PL_curcop = oldcop;
278 } 403 }
279 404
280 for (i = 0; i < count; ++i) 405 for (i = 0; i < count; ++i)
281 { 406 {
282 INDENT; 407 encode_indent (enc);
283 encode_he (enc, hes [i]); 408 encode_he (enc, hes [i]);
284 409
285 if (i < count - 1) 410 if (i < count - 1)
286 COMMA; 411 encode_comma (enc);
287 } 412 }
288 413
289 NL; 414 encode_nl (enc);
290 } 415 }
291 else 416 else
292 { 417 {
293 SV *sv;
294 HE *he = hv_iternext (hv); 418 HE *he = hv_iternext (hv);
295 419
296 for (;;) 420 for (;;)
297 { 421 {
298 INDENT; 422 encode_indent (enc);
299 encode_he (enc, he); 423 encode_he (enc, he);
300 424
301 if (!(he = hv_iternext (hv))) 425 if (!(he = hv_iternext (hv)))
302 break; 426 break;
303 427
304 COMMA; 428 encode_comma (enc);
305 } 429 }
306 430
307 NL; 431 encode_nl (enc);
308 } 432 }
309 } 433 }
310 434
311 --enc->indent; INDENT; encode_ch (enc, '}'); 435 --enc->indent; encode_indent (enc); encode_ch (enc, '}');
436}
437
438// encode objects, arrays and special \0=false and \1=true values.
439static void
440encode_rv (enc_t *enc, SV *sv)
441{
442 svtype svt;
443
444 SvGETMAGIC (sv);
445 svt = SvTYPE (sv);
446
447 if (svt == SVt_PVHV)
448 encode_hv (enc, (HV *)sv);
449 else if (svt == SVt_PVAV)
450 encode_av (enc, (AV *)sv);
451 else if (svt < SVt_PVAV)
452 {
453 if (SvNIOK (sv) && SvIV (sv) == 0)
454 encode_str (enc, "false", 5, 0);
455 else if (SvNIOK (sv) && SvIV (sv) == 1)
456 encode_str (enc, "true", 4, 0);
457 else
458 croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1",
459 SvPV_nolen (sv_2mortal (newRV_inc (sv))));
460 }
461 else
462 croak ("encountered %s, but JSON can only represent references to arrays or hashes",
463 SvPV_nolen (sv_2mortal (newRV_inc (sv))));
312} 464}
313 465
314static void 466static void
315encode_sv (enc_t *enc, SV *sv) 467encode_sv (enc_t *enc, SV *sv)
316{ 468{
469 SvGETMAGIC (sv);
470
317 if (SvPOKp (sv)) 471 if (SvPOKp (sv))
318 { 472 {
319 STRLEN len; 473 STRLEN len;
320 char *str = SvPV (sv, len); 474 char *str = SvPV (sv, len);
321 encode_ch (enc, '"'); 475 encode_ch (enc, '"');
… …
335 SvIsUV(sv) 489 SvIsUV(sv)
336 ? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv)) 490 ? snprintf (enc->cur, 64, "%"UVuf, (UV)SvUVX (sv))
337 : snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv)); 491 : snprintf (enc->cur, 64, "%"IVdf, (IV)SvIVX (sv));
338 } 492 }
339 else if (SvROK (sv)) 493 else if (SvROK (sv))
340 { 494 encode_rv (enc, SvRV (sv));
341 if (!--enc->max_recurse)
342 croak ("data structure too deep (hit recursion limit)");
343
344 sv = SvRV (sv);
345
346 switch (SvTYPE (sv))
347 {
348 case SVt_PVAV: encode_av (enc, (AV *)sv); break;
349 case SVt_PVHV: encode_hv (enc, (HV *)sv); break;
350
351 default:
352 croak ("JSON can only represent references to arrays or hashes");
353 }
354 }
355 else if (!SvOK (sv)) 495 else if (!SvOK (sv))
356 encode_str (enc, "null", 4, 0); 496 encode_str (enc, "null", 4, 0);
357 else 497 else
358 croak ("encountered perl type that JSON cannot handle"); 498 croak ("encountered perl type (%s,0x%x) that JSON cannot handle, you might want to report this",
499 SvPV_nolen (sv), SvFLAGS (sv));
359} 500}
360 501
361static SV * 502static SV *
362encode_json (SV *scalar, UV flags) 503encode_json (SV *scalar, U32 flags)
363{ 504{
364 enc_t enc; 505 enc_t enc;
506
507 if (!(flags & F_ALLOW_NONREF) && !SvROK (scalar))
508 croak ("hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)");
509
365 enc.flags = flags; 510 enc.flags = flags;
366 enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); 511 enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE));
367 enc.cur = SvPVX (enc.sv); 512 enc.cur = SvPVX (enc.sv);
368 enc.end = SvEND (enc.sv); 513 enc.end = SvEND (enc.sv);
369 enc.max_recurse = 0;
370 enc.indent = 0; 514 enc.indent = 0;
515 enc.maxdepth = DEC_DEPTH (flags);
371 516
372 SvPOK_only (enc.sv); 517 SvPOK_only (enc.sv);
373 encode_sv (&enc, scalar); 518 encode_sv (&enc, scalar);
374 519
375 if (!(flags & (F_ASCII | F_UTF8))) 520 if (!(flags & (F_ASCII | F_UTF8)))
376 SvUTF8_on (enc.sv); 521 SvUTF8_on (enc.sv);
377 522
378 SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); 523 SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv));
524 *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings
525
526 if (enc.flags & F_SHRINK)
527 shrink (enc.sv);
528
379 return enc.sv; 529 return enc.sv;
380} 530}
381 531
382///////////////////////////////////////////////////////////////////////////// 532/////////////////////////////////////////////////////////////////////////////
533// decoder
383 534
384#define WS \ 535// structure used for decoding JSON
536typedef struct
537{
538 char *cur; // current parser pointer
539 char *end; // end of input string
540 const char *err; // parse error, if != 0
541 U32 flags; // F_*
542 U32 depth; // recursion depth
543 U32 maxdepth; // recursion depth limit
544} dec_t;
545
546static void
547decode_ws (dec_t *dec)
548{
385 for (;;) \ 549 for (;;)
386 { \ 550 {
387 char ch = *dec->cur; \ 551 char ch = *dec->cur;
552
388 if (ch > 0x20 \ 553 if (ch > 0x20
389 || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09)) \ 554 || (ch != 0x20 && ch != 0x0a && ch != 0x0d && ch != 0x09))
390 break; \ 555 break;
556
391 ++dec->cur; \ 557 ++dec->cur;
392 } 558 }
559}
393 560
394#define ERR(reason) SB dec->err = reason; goto fail; SE 561#define ERR(reason) SB dec->err = reason; goto fail; SE
562
395#define EXPECT_CH(ch) SB \ 563#define EXPECT_CH(ch) SB \
396 if (*dec->cur != ch) \ 564 if (*dec->cur != ch) \
397 ERR (# ch " expected"); \ 565 ERR (# ch " expected"); \
398 ++dec->cur; \ 566 ++dec->cur; \
399 SE 567 SE
400 568
569#define DEC_INC_DEPTH if (++dec->depth > dec->maxdepth) ERR ("json datastructure exceeds maximum nesting level (set a higher max_depth)")
570#define DEC_DEC_DEPTH --dec->depth
571
401static SV *decode_sv (dec_t *dec); 572static SV *decode_sv (dec_t *dec);
402
403#define APPEND_CH(ch) SB \
404 SvGROW (sv, cur + 1 + 1); \
405 SvPVX (sv)[cur++] = (ch); \
406 SE
407 573
408static signed char decode_hexdigit[256]; 574static signed char decode_hexdigit[256];
409 575
410static UV 576static UV
411decode_4hex (dec_t *dec) 577decode_4hex (dec_t *dec)
412{ 578{
413 signed char d1, d2, d3, d4; 579 signed char d1, d2, d3, d4;
580 unsigned char *cur = (unsigned char *)dec->cur;
414 581
415 d1 = decode_hexdigit [((unsigned char *)dec->cur) [0]];
416 if (d1 < 0) ERR ("four hexadecimal digits expected"); 582 d1 = decode_hexdigit [cur [0]]; if (d1 < 0) ERR ("four hexadecimal digits expected");
417 d2 = decode_hexdigit [((unsigned char *)dec->cur) [1]];
418 if (d2 < 0) ERR ("four hexadecimal digits expected"); 583 d2 = decode_hexdigit [cur [1]]; if (d2 < 0) ERR ("four hexadecimal digits expected");
419 d3 = decode_hexdigit [((unsigned char *)dec->cur) [2]];
420 if (d3 < 0) ERR ("four hexadecimal digits expected"); 584 d3 = decode_hexdigit [cur [2]]; if (d3 < 0) ERR ("four hexadecimal digits expected");
421 d4 = decode_hexdigit [((unsigned char *)dec->cur) [3]];
422 if (d4 < 0) ERR ("four hexadecimal digits expected"); 585 d4 = decode_hexdigit [cur [3]]; if (d4 < 0) ERR ("four hexadecimal digits expected");
423 586
424 dec->cur += 4; 587 dec->cur += 4;
425 588
426 return ((UV)d1) << 12 589 return ((UV)d1) << 12
427 | ((UV)d2) << 8 590 | ((UV)d2) << 8
… …
433} 596}
434 597
435static SV * 598static SV *
436decode_str (dec_t *dec) 599decode_str (dec_t *dec)
437{ 600{
438 SV *sv = NEWSV (0,2); 601 SV *sv = 0;
439 STRLEN cur = 0;
440 int utf8 = 0; 602 int utf8 = 0;
441 603
442 for (;;) 604 do
443 { 605 {
444 unsigned char ch = *(unsigned char *)dec->cur; 606 char buf [SHORT_STRING_LEN + UTF8_MAX_LEN];
607 char *cur = buf;
445 608
446 if (ch == '"') 609 do
447 break;
448 else if (ch == '\\')
449 { 610 {
450 switch (*++dec->cur) 611 unsigned char ch = *(unsigned char *)dec->cur++;
612
613 if (ch == '"')
451 { 614 {
452 case '\\': 615 --dec->cur;
453 case '/': 616 break;
454 case '"': APPEND_CH (*dec->cur++); break; 617 }
455 618 else if (ch == '\\')
456 case 'b': APPEND_CH ('\010'); ++dec->cur; break; 619 {
457 case 't': APPEND_CH ('\011'); ++dec->cur; break; 620 switch (*dec->cur)
458 case 'n': APPEND_CH ('\012'); ++dec->cur; break;
459 case 'f': APPEND_CH ('\014'); ++dec->cur; break;
460 case 'r': APPEND_CH ('\015'); ++dec->cur; break;
461
462 case 'u':
463 { 621 {
464 UV lo, hi; 622 case '\\':
465 ++dec->cur; 623 case '/':
624 case '"': *cur++ = *dec->cur++; break;
466 625
467 hi = decode_4hex (dec); 626 case 'b': ++dec->cur; *cur++ = '\010'; break;
468 if (hi == (UV)-1) 627 case 't': ++dec->cur; *cur++ = '\011'; break;
469 goto fail; 628 case 'n': ++dec->cur; *cur++ = '\012'; break;
629 case 'f': ++dec->cur; *cur++ = '\014'; break;
630 case 'r': ++dec->cur; *cur++ = '\015'; break;
470 631
471 // possibly a surrogate pair 632 case 'u':
472 if (hi >= 0xd800 && hi < 0xdc00)
473 { 633 {
474 if (dec->cur [0] != '\\' || dec->cur [1] != 'u') 634 UV lo, hi;
475 ERR ("illegal surrogate character");
476
477 dec->cur += 2; 635 ++dec->cur;
478 636
479 lo = decode_4hex (dec); 637 hi = decode_4hex (dec);
480 if (lo == (UV)-1) 638 if (hi == (UV)-1)
481 goto fail; 639 goto fail;
482 640
641 // possibly a surrogate pair
642 if (hi >= 0xd800)
643 if (hi < 0xdc00)
644 {
645 if (dec->cur [0] != '\\' || dec->cur [1] != 'u')
646 ERR ("missing low surrogate character in surrogate pair");
647
648 dec->cur += 2;
649
650 lo = decode_4hex (dec);
651 if (lo == (UV)-1)
652 goto fail;
653
483 if (lo < 0xdc00 || lo >= 0xe000) 654 if (lo < 0xdc00 || lo >= 0xe000)
484 ERR ("surrogate pair expected"); 655 ERR ("surrogate pair expected");
485 656
486 hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000; 657 hi = (hi - 0xD800) * 0x400 + (lo - 0xDC00) + 0x10000;
658 }
659 else if (hi < 0xe000)
660 ERR ("missing high surrogate character in surrogate pair");
661
662 if (hi >= 0x80)
663 {
664 utf8 = 1;
665
666 cur = (char *)uvuni_to_utf8_flags (cur, hi, 0);
667 }
668 else
669 *cur++ = hi;
487 } 670 }
488 else if (lo >= 0xdc00 && lo < 0xe000)
489 ERR ("illegal surrogate character");
490
491 if (hi >= 0x80)
492 { 671 break;
493 utf8 = 1;
494 672
495 SvGROW (sv, cur + 4 + 1); // at most 4 bytes for 21 bits
496 cur = (char *)uvuni_to_utf8_flags (SvPVX (sv) + cur, hi, 0) - SvPVX (sv);
497 }
498 else 673 default:
499 APPEND_CH (hi); 674 --dec->cur;
675 ERR ("illegal backslash escape sequence in string");
500 } 676 }
677 }
678 else if (ch >= 0x20 && ch <= 0x7f)
679 *cur++ = ch;
680 else if (ch >= 0x80)
681 {
682 STRLEN clen;
683 UV uch;
684
685 --dec->cur;
686
687 uch = decode_utf8 (dec->cur, dec->end - dec->cur, &clen);
688 if (clen == (STRLEN)-1)
689 ERR ("malformed UTF-8 character in JSON string");
690
691 do
692 *cur++ = *dec->cur++;
693 while (--clen);
694
695 utf8 = 1;
696 }
697 else
698 {
699 --dec->cur;
700
701 if (!ch)
702 ERR ("unexpected end of string while parsing JSON string");
501 break; 703 else
704 ERR ("invalid character encountered while parsing JSON string");
502 } 705 }
503 } 706 }
504 else if (ch >= 0x20 && ch <= 0x7f) 707 while (cur < buf + SHORT_STRING_LEN);
505 APPEND_CH (*dec->cur++); 708
506 else if (ch >= 0x80) 709 {
710 STRLEN len = cur - buf;
711
712 if (sv)
507 { 713 {
508 STRLEN clen; 714 SvGROW (sv, SvCUR (sv) + len + 1);
509 UV uch = utf8n_to_uvuni (dec->cur, dec->end - dec->cur, &clen, UTF8_CHECK_ONLY); 715 memcpy (SvPVX (sv) + SvCUR (sv), buf, len);
510 if (clen < 0) 716 SvCUR_set (sv, SvCUR (sv) + len);
511 ERR ("malformed UTF-8 character in string, cannot convert to JSON");
512
513 SvGROW (sv, cur + clen + 1); // at most 4 bytes for 21 bits
514 memcpy (SvPVX (sv) + cur, dec->cur, clen);
515 dec->cur += clen;
516 } 717 }
517 else 718 else
518 ERR ("invalid character encountered"); 719 sv = newSVpvn (buf, len);
519 } 720 }
721 }
722 while (*dec->cur != '"');
520 723
521 ++dec->cur; 724 ++dec->cur;
522 725
726 if (sv)
727 {
523 SvPOK_only (sv); 728 SvPOK_only (sv);
524
525 SvCUR_set (sv, cur);
526 *SvEND (sv) = 0; 729 *SvEND (sv) = 0;
527 730
528 if (utf8) 731 if (utf8)
529 SvUTF8_on (sv); 732 SvUTF8_on (sv);
733 }
734 else
735 sv = newSVpvn ("", 0);
530 736
531 return sv; 737 return sv;
532 738
533fail: 739fail:
534 SvREFCNT_dec (sv);
535 return 0; 740 return 0;
536} 741}
537 742
538static SV * 743static SV *
539decode_num (dec_t *dec) 744decode_num (dec_t *dec)
… …
549 { 754 {
550 ++dec->cur; 755 ++dec->cur;
551 if (*dec->cur >= '0' && *dec->cur <= '9') 756 if (*dec->cur >= '0' && *dec->cur <= '9')
552 ERR ("malformed number (leading zero must not be followed by another digit)"); 757 ERR ("malformed number (leading zero must not be followed by another digit)");
553 } 758 }
554 759 else if (*dec->cur < '0' || *dec->cur > '9')
555 // int 760 ERR ("malformed number (no digits after initial minus)");
761 else
762 do
763 {
764 ++dec->cur;
765 }
556 while (*dec->cur >= '0' && *dec->cur <= '9') 766 while (*dec->cur >= '0' && *dec->cur <= '9');
557 ++dec->cur;
558 767
559 // [frac] 768 // [frac]
560 if (*dec->cur == '.') 769 if (*dec->cur == '.')
561 { 770 {
562 is_nv = 1; 771 ++dec->cur;
772
773 if (*dec->cur < '0' || *dec->cur > '9')
774 ERR ("malformed number (no digits after decimal point)");
563 775
564 do 776 do
565 { 777 {
566 ++dec->cur; 778 ++dec->cur;
567 } 779 }
568 while (*dec->cur >= '0' && *dec->cur <= '9'); 780 while (*dec->cur >= '0' && *dec->cur <= '9');
781
782 is_nv = 1;
569 } 783 }
570 784
571 // [exp] 785 // [exp]
572 if (*dec->cur == 'e' || *dec->cur == 'E') 786 if (*dec->cur == 'e' || *dec->cur == 'E')
573 { 787 {
574 is_nv = 1;
575
576 ++dec->cur; 788 ++dec->cur;
789
577 if (*dec->cur == '-' || *dec->cur == '+') 790 if (*dec->cur == '-' || *dec->cur == '+')
578 ++dec->cur; 791 ++dec->cur;
579 792
793 if (*dec->cur < '0' || *dec->cur > '9')
794 ERR ("malformed number (no digits after exp sign)");
795
796 do
797 {
798 ++dec->cur;
799 }
580 while (*dec->cur >= '0' && *dec->cur <= '9') 800 while (*dec->cur >= '0' && *dec->cur <= '9');
581 ++dec->cur; 801
802 is_nv = 1;
582 } 803 }
583 804
584 if (!is_nv) 805 if (!is_nv)
585 { 806 {
586 UV uv; 807 UV uv;
… …
604static SV * 825static SV *
605decode_av (dec_t *dec) 826decode_av (dec_t *dec)
606{ 827{
607 AV *av = newAV (); 828 AV *av = newAV ();
608 829
830 DEC_INC_DEPTH;
831 decode_ws (dec);
832
833 if (*dec->cur == ']')
834 ++dec->cur;
835 else
609 for (;;) 836 for (;;)
610 { 837 {
611 SV *value; 838 SV *value;
612 839
613 value = decode_sv (dec); 840 value = decode_sv (dec);
614 if (!value) 841 if (!value)
615 goto fail; 842 goto fail;
616 843
617 av_push (av, value); 844 av_push (av, value);
618 845
619 WS; 846 decode_ws (dec);
620 847
621 if (*dec->cur == ']') 848 if (*dec->cur == ']')
622 { 849 {
623 ++dec->cur; 850 ++dec->cur;
624 break; 851 break;
852 }
625 } 853
626
627 if (*dec->cur != ',') 854 if (*dec->cur != ',')
628 ERR (", or ] expected while parsing array"); 855 ERR (", or ] expected while parsing array");
629 856
630 ++dec->cur; 857 ++dec->cur;
631 } 858 }
632 859
860 DEC_DEC_DEPTH;
633 return newRV_noinc ((SV *)av); 861 return newRV_noinc ((SV *)av);
634 862
635fail: 863fail:
636 SvREFCNT_dec (av); 864 SvREFCNT_dec (av);
865 DEC_DEC_DEPTH;
637 return 0; 866 return 0;
638} 867}
639 868
640static SV * 869static SV *
641decode_hv (dec_t *dec) 870decode_hv (dec_t *dec)
642{ 871{
643 HV *hv = newHV (); 872 HV *hv = newHV ();
644 873
874 DEC_INC_DEPTH;
875 decode_ws (dec);
876
877 if (*dec->cur == '}')
878 ++dec->cur;
879 else
645 for (;;) 880 for (;;)
646 { 881 {
647 SV *key, *value; 882 SV *key, *value;
648 883
649 WS; EXPECT_CH ('"'); 884 decode_ws (dec); EXPECT_CH ('"');
650 885
651 key = decode_str (dec); 886 key = decode_str (dec);
652 if (!key) 887 if (!key)
653 goto fail;
654
655 WS; EXPECT_CH (':');
656
657 value = decode_sv (dec);
658 if (!value)
659 {
660 SvREFCNT_dec (key);
661 goto fail; 888 goto fail;
889
890 decode_ws (dec); EXPECT_CH (':');
891
892 value = decode_sv (dec);
893 if (!value)
894 {
895 SvREFCNT_dec (key);
896 goto fail;
662 } 897 }
663 898
664 //TODO: optimise
665 hv_store_ent (hv, key, value, 0); 899 hv_store_ent (hv, key, value, 0);
900 SvREFCNT_dec (key);
666 901
667 WS; 902 decode_ws (dec);
668 903
669 if (*dec->cur == '}') 904 if (*dec->cur == '}')
670 { 905 {
671 ++dec->cur; 906 ++dec->cur;
672 break; 907 break;
673 } 908 }
674 909
675 if (*dec->cur != ',') 910 if (*dec->cur != ',')
676 ERR (", or } expected while parsing object/hash"); 911 ERR (", or } expected while parsing object/hash");
677 912
678 ++dec->cur; 913 ++dec->cur;
679 } 914 }
680 915
916 DEC_DEC_DEPTH;
681 return newRV_noinc ((SV *)hv); 917 return newRV_noinc ((SV *)hv);
682 918
683fail: 919fail:
684 SvREFCNT_dec (hv); 920 SvREFCNT_dec (hv);
921 DEC_DEC_DEPTH;
685 return 0; 922 return 0;
686} 923}
687 924
688static SV * 925static SV *
689decode_sv (dec_t *dec) 926decode_sv (dec_t *dec)
690{ 927{
691 WS; 928 decode_ws (dec);
692 switch (*dec->cur) 929 switch (*dec->cur)
693 { 930 {
694 case '"': ++dec->cur; return decode_str (dec); 931 case '"': ++dec->cur; return decode_str (dec);
695 case '[': ++dec->cur; return decode_av (dec); 932 case '[': ++dec->cur; return decode_av (dec);
696 case '{': ++dec->cur; return decode_hv (dec); 933 case '{': ++dec->cur; return decode_hv (dec);
… …
724 961
725 case 'n': 962 case 'n':
726 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) 963 if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4))
727 { 964 {
728 dec->cur += 4; 965 dec->cur += 4;
729 return newSViv (1); 966 return newSVsv (&PL_sv_undef);
730 } 967 }
731 else 968 else
732 ERR ("'null' expected"); 969 ERR ("'null' expected");
733 970
734 break; 971 break;
735 972
736 default: 973 default:
737 ERR ("malformed json string"); 974 ERR ("malformed JSON string, neither array, object, number, string or atom");
738 break; 975 break;
739 } 976 }
740 977
741fail: 978fail:
742 return 0; 979 return 0;
743} 980}
744 981
745static SV * 982static SV *
746decode_json (SV *string, UV flags) 983decode_json (SV *string, U32 flags)
747{ 984{
985 dec_t dec;
748 SV *sv; 986 SV *sv;
749 987
988 SvUPGRADE (string, SVt_PV);
989
750 if (!(flags & F_UTF8)) 990 if (flags & F_UTF8)
991 sv_utf8_downgrade (string, 0);
992 else
751 sv_utf8_upgrade (string); 993 sv_utf8_upgrade (string);
752 994
753 SvGROW (string, SvCUR (string) + 1); // should basically be a NOP 995 SvGROW (string, SvCUR (string) + 1); // should basically be a NOP
754 996
755 dec_t dec;
756 dec.flags = flags; 997 dec.flags = flags;
757 dec.cur = SvPVX (string); 998 dec.cur = SvPVX (string);
758 dec.end = SvEND (string); 999 dec.end = SvEND (string);
759 dec.err = 0; 1000 dec.err = 0;
1001 dec.depth = 0;
1002 dec.maxdepth = DEC_DEPTH (dec.flags);
760 1003
761 *dec.end = 1; // invalid anywhere 1004 *dec.end = 0; // this should basically be a nop, too, but make sure its there
762 sv = decode_sv (&dec); 1005 sv = decode_sv (&dec);
763 *dec.end = 0;
764 1006
765 if (!sv) 1007 if (!sv)
766 { 1008 {
1009 IV offset = dec.flags & F_UTF8
1010 ? dec.cur - SvPVX (string)
767 IV offset = utf8_distance (dec.cur, SvPVX (string)); 1011 : utf8_distance (dec.cur, SvPVX (string));
768 SV *uni = sv_newmortal (); 1012 SV *uni = sv_newmortal ();
769 1013
1014 // horrible hack to silence warning inside pv_uni_display
1015 COP cop = *PL_curcop;
1016 cop.cop_warnings = pWARN_NONE;
1017 ENTER;
1018 SAVEVPTR (PL_curcop);
1019 PL_curcop = &cop;
770 pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ); 1020 pv_uni_display (uni, dec.cur, dec.end - dec.cur, 20, UNI_DISPLAY_QQ);
1021 LEAVE;
1022
771 croak ("%s, at character %d (%s)", 1023 croak ("%s, at character offset %d [\"%s\"]",
772 dec.err, 1024 dec.err,
773 (int)offset, 1025 (int)offset,
774 dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)"); 1026 dec.cur != dec.end ? SvPV_nolen (uni) : "(end of string)");
775 } 1027 }
776 1028
777 sv_dump (sv);//D
778 return sv_2mortal (sv); 1029 sv = sv_2mortal (sv);
1030
1031 if (!(dec.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)");
1033
1034 return sv;
779} 1035}
1036
1037/////////////////////////////////////////////////////////////////////////////
1038// XS interface functions
780 1039
781MODULE = JSON::XS PACKAGE = JSON::XS 1040MODULE = JSON::XS PACKAGE = JSON::XS
782 1041
783BOOT: 1042BOOT:
784{ 1043{
785 int i; 1044 int i;
786 1045
787 memset (decode_hexdigit, 0xff, 256); 1046 memset (decode_hexdigit, 0xff, 256);
1047
788 for (i = 10; i--; ) 1048 for (i = 0; i < 256; ++i)
789 decode_hexdigit ['0' + i] = i; 1049 decode_hexdigit [i] =
790 1050 i >= '0' && i <= '9' ? i - '0'
791 for (i = 6; --i; ) 1051 : i >= 'a' && i <= 'f' ? i - 'a' + 10
792 { 1052 : i >= 'A' && i <= 'F' ? i - 'A' + 10
793 decode_hexdigit ['a' + i] = 10 + i; 1053 : -1;
794 decode_hexdigit ['A' + i] = 10 + i;
795 }
796 1054
797 json_stash = gv_stashpv ("JSON::XS", 1); 1055 json_stash = gv_stashpv ("JSON::XS", 1);
798} 1056}
1057
1058PROTOTYPES: DISABLE
799 1059
800SV *new (char *dummy) 1060SV *new (char *dummy)
801 CODE: 1061 CODE:
802 RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash); 1062 RETVAL = sv_bless (newRV_noinc (newSVuv (F_DEFAULT)), json_stash);
803 OUTPUT: 1063 OUTPUT:
804 RETVAL 1064 RETVAL
805 1065
806SV *ascii (SV *self, int enable) 1066SV *ascii (SV *self, int enable = 1)
807 ALIAS: 1067 ALIAS:
808 ascii = F_ASCII 1068 ascii = F_ASCII
809 utf8 = F_UTF8 1069 utf8 = F_UTF8
810 indent = F_INDENT 1070 indent = F_INDENT
811 canonical = F_CANONICAL 1071 canonical = F_CANONICAL
812 space_before = F_SPACE_BEFORE 1072 space_before = F_SPACE_BEFORE
813 space_after = F_SPACE_AFTER 1073 space_after = F_SPACE_AFTER
814 json_rpc = F_JSON_RPC
815 pretty = F_PRETTY 1074 pretty = F_PRETTY
1075 allow_nonref = F_ALLOW_NONREF
1076 shrink = F_SHRINK
816 CODE: 1077 CODE:
817{ 1078{
818 UV *uv = SvJSON (self); 1079 UV *uv = SvJSON (self);
819 if (enable) 1080 if (enable)
820 *uv |= ix; 1081 *uv |= ix;
… …
824 RETVAL = newSVsv (self); 1085 RETVAL = newSVsv (self);
825} 1086}
826 OUTPUT: 1087 OUTPUT:
827 RETVAL 1088 RETVAL
828 1089
1090SV *max_depth (SV *self, UV max_depth = 0x80000000UL)
1091 CODE:
1092{
1093 UV *uv = SvJSON (self);
1094 UV log2 = 0;
1095
1096 if (max_depth > 0x80000000UL) max_depth = 0x80000000UL;
1097
1098 while ((1UL << log2) < max_depth)
1099 ++log2;
1100
1101 *uv = *uv & ~F_MAXDEPTH | (log2 << S_MAXDEPTH);
1102
1103 RETVAL = newSVsv (self);
1104}
1105 OUTPUT:
1106 RETVAL
1107
829void encode (SV *self, SV *scalar) 1108void encode (SV *self, SV *scalar)
830 PPCODE: 1109 PPCODE:
831 XPUSHs (encode_json (scalar, *SvJSON (self))); 1110 XPUSHs (encode_json (scalar, *SvJSON (self)));
832 1111
833void decode (SV *self, SV *jsonstr) 1112void decode (SV *self, SV *jsonstr)
834 PPCODE: 1113 PPCODE:
835 XPUSHs (decode_json (jsonstr, *SvJSON (self))); 1114 XPUSHs (decode_json (jsonstr, *SvJSON (self)));
836 1115
1116PROTOTYPES: ENABLE
1117
837void to_json (SV *scalar) 1118void to_json (SV *scalar)
1119 ALIAS:
1120 objToJson = 0
838 PPCODE: 1121 PPCODE:
839 XPUSHs (encode_json (scalar, F_UTF8)); 1122 XPUSHs (encode_json (scalar, F_DEFAULT | F_UTF8));
840 1123
841void from_json (SV *jsonstr) 1124void from_json (SV *jsonstr)
1125 ALIAS:
1126 jsonToObj = 0
842 PPCODE: 1127 PPCODE:
843 XPUSHs (decode_json (jsonstr, F_UTF8)); 1128 XPUSHs (decode_json (jsonstr, F_DEFAULT | F_UTF8));
844 1129

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