Ruby 2.7.0p0(2019-12-25revision647ee6f091eafcce70ffb75ddf7e121e192ab217)

generator.c
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1 #include "../fbuffer/fbuffer.h"
2 #include "generator.h"
3
4 #ifdef HAVE_RUBY_ENCODING_H
5 static VALUE CEncoding_UTF_8;
6 static ID i_encoding, i_encode;
7 #endif
8
9 static VALUE mJSON, mExt, mGenerator, cState, mGeneratorMethods, mObject,
10 mHash, mArray,
11 #ifdef RUBY_INTEGER_UNIFICATION
12 mInteger,
13 #else
14 mFixnum, mBignum,
15 #endif
16 mFloat, mString, mString_Extend,
17 mTrueClass, mFalseClass, mNilClass, eGeneratorError,
18 eNestingError,
19 i_SAFE_STATE_PROTOTYPE;
20
21 static ID i_to_s, i_to_json, i_new, i_indent, i_space, i_space_before,
22 i_object_nl, i_array_nl, i_max_nesting, i_allow_nan, i_ascii_only,
23 i_pack, i_unpack, i_create_id, i_extend, i_key_p,
24 i_aref, i_send, i_respond_to_p, i_match, i_keys, i_depth,
25 i_buffer_initial_length, i_dup;
26
27 /*
28 * Copyright 2001-2004 Unicode, Inc.
29 *
30 * Disclaimer
31 *
32 * This source code is provided as is by Unicode, Inc. No claims are
33 * made as to fitness for any particular purpose. No warranties of any
34 * kind are expressed or implied. The recipient agrees to determine
35 * applicability of information provided. If this file has been
36 * purchased on magnetic or optical media from Unicode, Inc., the
37 * sole remedy for any claim will be exchange of defective media
38 * within 90 days of receipt.
39 *
40 * Limitations on Rights to Redistribute This Code
41 *
42 * Unicode, Inc. hereby grants the right to freely use the information
43 * supplied in this file in the creation of products supporting the
44 * Unicode Standard, and to make copies of this file in any form
45 * for internal or external distribution as long as this notice
46 * remains attached.
47 */
48
49 /*
50 * Index into the table below with the first byte of a UTF-8 sequence to
51 * get the number of trailing bytes that are supposed to follow it.
52 * Note that *legal* UTF-8 values can't have 4 or 5-bytes. The table is
53 * left as-is for anyone who may want to do such conversion, which was
54 * allowed in earlier algorithms.
55 */
56 static const char trailingBytesForUTF8[256] = {
57 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
58 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
59 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
60 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
61 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
62 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
63 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
64 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5
65 };
66
67 /*
68 * Magic values subtracted from a buffer value during UTF8 conversion.
69 * This table contains as many values as there might be trailing bytes
70 * in a UTF-8 sequence.
71 */
72 static const UTF32 offsetsFromUTF8[6] = { 0x00000000UL, 0x00003080UL, 0x000E2080UL,
73 0x03C82080UL, 0xFA082080UL, 0x82082080UL };
74
75 /*
76 * Utility routine to tell whether a sequence of bytes is legal UTF-8.
77 * This must be called with the length pre-determined by the first byte.
78 * If not calling this from ConvertUTF8to*, then the length can be set by:
79 * length = trailingBytesForUTF8[*source]+1;
80 * and the sequence is illegal right away if there aren't that many bytes
81 * available.
82 * If presented with a length > 4, this returns 0. The Unicode
83 * definition of UTF-8 goes up to 4-byte sequences.
84 */
85 static unsigned char isLegalUTF8(const UTF8 *source, unsigned long length)
86 {
87 UTF8 a;
88 const UTF8 *srcptr = source+length;
89 switch (length) {
90 default: return 0;
91 /* Everything else falls through when "1"... */
92 case 4: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return 0;
93 case 3: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return 0;
94 case 2: if ((a = (*--srcptr)) > 0xBF) return 0;
95
96 switch (*source) {
97 /* no fall-through in this inner switch */
98 case 0xE0: if (a < 0xA0) return 0; break;
99 case 0xED: if (a > 0x9F) return 0; break;
100 case 0xF0: if (a < 0x90) return 0; break;
101 case 0xF4: if (a > 0x8F) return 0; break;
102 default: if (a < 0x80) return 0;
103 }
104
105 case 1: if (*source >= 0x80 && *source < 0xC2) return 0;
106 }
107 if (*source > 0xF4) return 0;
108 return 1;
109 }
110
111 /* Escapes the UTF16 character and stores the result in the buffer buf. */
112 static void unicode_escape(char *buf, UTF16 character)
113 {
114 const char *digits = "0123456789abcdef";
115
116 buf[2] = digits[character >> 12];
117 buf[3] = digits[(character >> 8) & 0xf];
118 buf[4] = digits[(character >> 4) & 0xf];
119 buf[5] = digits[character & 0xf];
120 }
121
122 /* Escapes the UTF16 character and stores the result in the buffer buf, then
123 * the buffer buf is appended to the FBuffer buffer. */
124 static void unicode_escape_to_buffer(FBuffer *buffer, char buf[6], UTF16
125 character)
126 {
127 unicode_escape(buf, character);
128 fbuffer_append(buffer, buf, 6);
129 }
130
131 /* Converts string to a JSON string in FBuffer buffer, where all but the ASCII
132 * and control characters are JSON escaped. */
133 static void convert_UTF8_to_JSON_ASCII(FBuffer *buffer, VALUE string)
134 {
135 const UTF8 *source = (UTF8 *) RSTRING_PTR(string);
136 const UTF8 *sourceEnd = source + RSTRING_LEN(string);
137 char buf[6] = { '\\', 'u' };
138
139 while (source < sourceEnd) {
140 UTF32 ch = 0;
141 unsigned short extraBytesToRead = trailingBytesForUTF8[*source];
142 if (source + extraBytesToRead >= sourceEnd) {
143 rb_raise(rb_path2class("JSON::GeneratorError"),
144 "partial character in source, but hit end");
145 }
146 if (!isLegalUTF8(source, extraBytesToRead+1)) {
147 rb_raise(rb_path2class("JSON::GeneratorError"),
148 "source sequence is illegal/malformed utf-8");
149 }
150 /*
151 * The cases all fall through. See "Note A" below.
152 */
153 switch (extraBytesToRead) {
154 case 5: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
155 case 4: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
156 case 3: ch += *source++; ch <<= 6;
157 case 2: ch += *source++; ch <<= 6;
158 case 1: ch += *source++; ch <<= 6;
159 case 0: ch += *source++;
160 }
161 ch -= offsetsFromUTF8[extraBytesToRead];
162
163 if (ch <= UNI_MAX_BMP) { /* Target is a character <= 0xFFFF */
164 /* UTF-16 surrogate values are illegal in UTF-32 */
165 if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
166 #if UNI_STRICT_CONVERSION
167 source -= (extraBytesToRead+1); /* return to the illegal value itself */
168 rb_raise(rb_path2class("JSON::GeneratorError"),
169 "source sequence is illegal/malformed utf-8");
170 #else
171 unicode_escape_to_buffer(buffer, buf, UNI_REPLACEMENT_CHAR);
172 #endif
173 } else {
174 /* normal case */
175 if (ch >= 0x20 && ch <= 0x7f) {
176 switch (ch) {
177 case '\\':
178 fbuffer_append(buffer, "\\\\", 2);
179 break;
180 case '"':
181 fbuffer_append(buffer, "\\\"", 2);
182 break;
183 default:
184 fbuffer_append_char(buffer, (char)ch);
185 break;
186 }
187 } else {
188 switch (ch) {
189 case '\n':
190 fbuffer_append(buffer, "\\n", 2);
191 break;
192 case '\r':
193 fbuffer_append(buffer, "\\r", 2);
194 break;
195 case '\t':
196 fbuffer_append(buffer, "\\t", 2);
197 break;
198 case '\f':
199 fbuffer_append(buffer, "\\f", 2);
200 break;
201 case '\b':
202 fbuffer_append(buffer, "\\b", 2);
203 break;
204 default:
205 unicode_escape_to_buffer(buffer, buf, (UTF16) ch);
206 break;
207 }
208 }
209 }
210 } else if (ch > UNI_MAX_UTF16) {
211 #if UNI_STRICT_CONVERSION
212 source -= (extraBytesToRead+1); /* return to the start */
213 rb_raise(rb_path2class("JSON::GeneratorError"),
214 "source sequence is illegal/malformed utf8");
215 #else
216 unicode_escape_to_buffer(buffer, buf, UNI_REPLACEMENT_CHAR);
217 #endif
218 } else {
219 /* target is a character in range 0xFFFF - 0x10FFFF. */
220 ch -= halfBase;
221 unicode_escape_to_buffer(buffer, buf, (UTF16)((ch >> halfShift) + UNI_SUR_HIGH_START));
222 unicode_escape_to_buffer(buffer, buf, (UTF16)((ch & halfMask) + UNI_SUR_LOW_START));
223 }
224 }
225 RB_GC_GUARD(string);
226 }
227
228 /* Converts string to a JSON string in FBuffer buffer, where only the
229 * characters required by the JSON standard are JSON escaped. The remaining
230 * characters (should be UTF8) are just passed through and appended to the
231 * result. */
232 static void convert_UTF8_to_JSON(FBuffer *buffer, VALUE string)
233 {
234 const char *ptr = RSTRING_PTR(string), *p;
235 unsigned long len = RSTRING_LEN(string), start = 0, end = 0;
236 const char *escape = NULL;
237 int escape_len;
238 unsigned char c;
239 char buf[6] = { '\\', 'u' };
240 int ascii_only = rb_enc_str_asciionly_p(string);
241
242 for (start = 0, end = 0; end < len;) {
243 p = ptr + end;
244 c = (unsigned char) *p;
245 if (c < 0x20) {
246 switch (c) {
247 case '\n':
248 escape = "\\n";
249 escape_len = 2;
250 break;
251 case '\r':
252 escape = "\\r";
253 escape_len = 2;
254 break;
255 case '\t':
256 escape = "\\t";
257 escape_len = 2;
258 break;
259 case '\f':
260 escape = "\\f";
261 escape_len = 2;
262 break;
263 case '\b':
264 escape = "\\b";
265 escape_len = 2;
266 break;
267 default:
268 unicode_escape(buf, (UTF16) *p);
269 escape = buf;
270 escape_len = 6;
271 break;
272 }
273 } else {
274 switch (c) {
275 case '\\':
276 escape = "\\\\";
277 escape_len = 2;
278 break;
279 case '"':
280 escape = "\\\"";
281 escape_len = 2;
282 break;
283 default:
284 {
285 unsigned short clen = 1;
286 if (!ascii_only) {
287 clen += trailingBytesForUTF8[c];
288 if (end + clen > len) {
289 rb_raise(rb_path2class("JSON::GeneratorError"),
290 "partial character in source, but hit end");
291 }
292 if (!isLegalUTF8((UTF8 *) p, clen)) {
293 rb_raise(rb_path2class("JSON::GeneratorError"),
294 "source sequence is illegal/malformed utf-8");
295 }
296 }
297 end += clen;
298 }
299 continue;
300 break;
301 }
302 }
303 fbuffer_append(buffer, ptr + start, end - start);
304 fbuffer_append(buffer, escape, escape_len);
305 start = ++end;
306 escape = NULL;
307 }
308 fbuffer_append(buffer, ptr + start, end - start);
309 }
310
311 static char *fstrndup(const char *ptr, unsigned long len) {
312 char *result;
313 if (len <= 0) return NULL;
314 result = ALLOC_N(char, len);
315 memcpy(result, ptr, len);
316 return result;
317 }
318
319 /*
320 * Document-module: JSON::Ext::Generator
321 *
322 * This is the JSON generator implemented as a C extension. It can be
323 * configured to be used by setting
324 *
325 * JSON.generator = JSON::Ext::Generator
326 *
327 * with the method generator= in JSON.
328 *
329 */
330
331 /*
332 * call-seq: to_json(state = nil)
333 *
334 * Returns a JSON string containing a JSON object, that is generated from
335 * this Hash instance.
336 * _state_ is a JSON::State object, that can also be used to configure the
337 * produced JSON string output further.
338 */
339 static VALUE mHash_to_json(int argc, VALUE *argv, VALUE self)
340 {
341 GENERATE_JSON(object);
342 }
343
344 /*
345 * call-seq: to_json(state = nil)
346 *
347 * Returns a JSON string containing a JSON array, that is generated from
348 * this Array instance.
349 * _state_ is a JSON::State object, that can also be used to configure the
350 * produced JSON string output further.
351 */
352 static VALUE mArray_to_json(int argc, VALUE *argv, VALUE self) {
353 GENERATE_JSON(array);
354 }
355
356 #ifdef RUBY_INTEGER_UNIFICATION
357 /*
358 * call-seq: to_json(*)
359 *
360 * Returns a JSON string representation for this Integer number.
361 */
362 static VALUE mInteger_to_json(int argc, VALUE *argv, VALUE self)
363 {
364 GENERATE_JSON(integer);
365 }
366
367 #else
368 /*
369 * call-seq: to_json(*)
370 *
371 * Returns a JSON string representation for this Integer number.
372 */
373 static VALUE mFixnum_to_json(int argc, VALUE *argv, VALUE self)
374 {
375 GENERATE_JSON(fixnum);
376 }
377
378 /*
379 * call-seq: to_json(*)
380 *
381 * Returns a JSON string representation for this Integer number.
382 */
383 static VALUE mBignum_to_json(int argc, VALUE *argv, VALUE self)
384 {
385 GENERATE_JSON(bignum);
386 }
387 #endif
388
389 /*
390 * call-seq: to_json(*)
391 *
392 * Returns a JSON string representation for this Float number.
393 */
394 static VALUE mFloat_to_json(int argc, VALUE *argv, VALUE self)
395 {
396 GENERATE_JSON(float);
397 }
398
399 /*
400 * call-seq: String.included(modul)
401 *
402 * Extends _modul_ with the String::Extend module.
403 */
404 static VALUE mString_included_s(VALUE self, VALUE modul) {
405 VALUE result = rb_funcall(modul, i_extend, 1, mString_Extend);
406 return result;
407 }
408
409 /*
410 * call-seq: to_json(*)
411 *
412 * This string should be encoded with UTF-8 A call to this method
413 * returns a JSON string encoded with UTF16 big endian characters as
414 * \u????.
415 */
416 static VALUE mString_to_json(int argc, VALUE *argv, VALUE self)
417 {
418 GENERATE_JSON(string);
419 }
420
421 /*
422 * call-seq: to_json_raw_object()
423 *
424 * This method creates a raw object hash, that can be nested into
425 * other data structures and will be generated as a raw string. This
426 * method should be used, if you want to convert raw strings to JSON
427 * instead of UTF-8 strings, e. g. binary data.
428 */
429 static VALUE mString_to_json_raw_object(VALUE self)
430 {
431 VALUE ary;
432 VALUE result = rb_hash_new();
433 rb_hash_aset(result, rb_funcall(mJSON, i_create_id, 0), rb_class_name(rb_obj_class(self)));
434 ary = rb_funcall(self, i_unpack, 1, rb_str_new2("C*"));
435 rb_hash_aset(result, rb_str_new2("raw"), ary);
436 return result;
437 }
438
439 /*
440 * call-seq: to_json_raw(*args)
441 *
442 * This method creates a JSON text from the result of a call to
443 * to_json_raw_object of this String.
444 */
445 static VALUE mString_to_json_raw(int argc, VALUE *argv, VALUE self)
446 {
447 VALUE obj = mString_to_json_raw_object(self);
448 Check_Type(obj, T_HASH);
449 return mHash_to_json(argc, argv, obj);
450 }
451
452 /*
453 * call-seq: json_create(o)
454 *
455 * Raw Strings are JSON Objects (the raw bytes are stored in an array for the
456 * key "raw"). The Ruby String can be created by this module method.
457 */
458 static VALUE mString_Extend_json_create(VALUE self, VALUE o)
459 {
460 VALUE ary;
461 Check_Type(o, T_HASH);
462 ary = rb_hash_aref(o, rb_str_new2("raw"));
463 return rb_funcall(ary, i_pack, 1, rb_str_new2("C*"));
464 }
465
466 /*
467 * call-seq: to_json(*)
468 *
469 * Returns a JSON string for true: 'true'.
470 */
471 static VALUE mTrueClass_to_json(int argc, VALUE *argv, VALUE self)
472 {
473 GENERATE_JSON(true);
474 }
475
476 /*
477 * call-seq: to_json(*)
478 *
479 * Returns a JSON string for false: 'false'.
480 */
481 static VALUE mFalseClass_to_json(int argc, VALUE *argv, VALUE self)
482 {
483 GENERATE_JSON(false);
484 }
485
486 /*
487 * call-seq: to_json(*)
488 *
489 * Returns a JSON string for nil: 'null'.
490 */
491 static VALUE mNilClass_to_json(int argc, VALUE *argv, VALUE self)
492 {
493 GENERATE_JSON(null);
494 }
495
496 /*
497 * call-seq: to_json(*)
498 *
499 * Converts this object to a string (calling #to_s), converts
500 * it to a JSON string, and returns the result. This is a fallback, if no
501 * special method #to_json was defined for some object.
502 */
503 static VALUE mObject_to_json(int argc, VALUE *argv, VALUE self)
504 {
505 VALUE state;
506 VALUE string = rb_funcall(self, i_to_s, 0);
507 rb_scan_args(argc, argv, "01", &state);
508 Check_Type(string, T_STRING);
509 state = cState_from_state_s(cState, state);
510 return cState_partial_generate(state, string);
511 }
512
513 static void State_free(void *ptr)
514 {
515 JSON_Generator_State *state = ptr;
516 if (state->indent) ruby_xfree(state->indent);
517 if (state->space) ruby_xfree(state->space);
518 if (state->space_before) ruby_xfree(state->space_before);
519 if (state->object_nl) ruby_xfree(state->object_nl);
520 if (state->array_nl) ruby_xfree(state->array_nl);
521 if (state->array_delim) fbuffer_free(state->array_delim);
522 if (state->object_delim) fbuffer_free(state->object_delim);
523 if (state->object_delim2) fbuffer_free(state->object_delim2);
524 ruby_xfree(state);
525 }
526
527 static size_t State_memsize(const void *ptr)
528 {
529 const JSON_Generator_State *state = ptr;
530 size_t size = sizeof(*state);
531 if (state->indent) size += state->indent_len + 1;
532 if (state->space) size += state->space_len + 1;
533 if (state->space_before) size += state->space_before_len + 1;
534 if (state->object_nl) size += state->object_nl_len + 1;
535 if (state->array_nl) size += state->array_nl_len + 1;
536 if (state->array_delim) size += FBUFFER_CAPA(state->array_delim);
537 if (state->object_delim) size += FBUFFER_CAPA(state->object_delim);
538 if (state->object_delim2) size += FBUFFER_CAPA(state->object_delim2);
539 return size;
540 }
541
542 #ifdef NEW_TYPEDDATA_WRAPPER
543 static const rb_data_type_t JSON_Generator_State_type = {
544 "JSON/Generator/State",
545 {NULL, State_free, State_memsize,},
546 #ifdef RUBY_TYPED_FREE_IMMEDIATELY
547 0, 0,
548 RUBY_TYPED_FREE_IMMEDIATELY,
549 #endif
550 };
551 #endif
552
553 static VALUE cState_s_allocate(VALUE klass)
554 {
555 JSON_Generator_State *state;
556 return TypedData_Make_Struct(klass, JSON_Generator_State,
557 &JSON_Generator_State_type, state);
558 }
559
560 /*
561 * call-seq: configure(opts)
562 *
563 * Configure this State instance with the Hash _opts_, and return
564 * itself.
565 */
566 static VALUE cState_configure(VALUE self, VALUE opts)
567 {
568 VALUE tmp;
569 GET_STATE(self);
570 tmp = rb_check_convert_type(opts, T_HASH, "Hash", "to_hash");
571 if (NIL_P(tmp)) tmp = rb_convert_type(opts, T_HASH, "Hash", "to_h");
572 opts = tmp;
573 tmp = rb_hash_aref(opts, ID2SYM(i_indent));
574 if (RTEST(tmp)) {
575 unsigned long len;
576 Check_Type(tmp, T_STRING);
577 len = RSTRING_LEN(tmp);
578 state->indent = fstrndup(RSTRING_PTR(tmp), len + 1);
579 state->indent_len = len;
580 }
581 tmp = rb_hash_aref(opts, ID2SYM(i_space));
582 if (RTEST(tmp)) {
583 unsigned long len;
584 Check_Type(tmp, T_STRING);
585 len = RSTRING_LEN(tmp);
586 state->space = fstrndup(RSTRING_PTR(tmp), len + 1);
587 state->space_len = len;
588 }
589 tmp = rb_hash_aref(opts, ID2SYM(i_space_before));
590 if (RTEST(tmp)) {
591 unsigned long len;
592 Check_Type(tmp, T_STRING);
593 len = RSTRING_LEN(tmp);
594 state->space_before = fstrndup(RSTRING_PTR(tmp), len + 1);
595 state->space_before_len = len;
596 }
597 tmp = rb_hash_aref(opts, ID2SYM(i_array_nl));
598 if (RTEST(tmp)) {
599 unsigned long len;
600 Check_Type(tmp, T_STRING);
601 len = RSTRING_LEN(tmp);
602 state->array_nl = fstrndup(RSTRING_PTR(tmp), len + 1);
603 state->array_nl_len = len;
604 }
605 tmp = rb_hash_aref(opts, ID2SYM(i_object_nl));
606 if (RTEST(tmp)) {
607 unsigned long len;
608 Check_Type(tmp, T_STRING);
609 len = RSTRING_LEN(tmp);
610 state->object_nl = fstrndup(RSTRING_PTR(tmp), len + 1);
611 state->object_nl_len = len;
612 }
613 tmp = ID2SYM(i_max_nesting);
614 state->max_nesting = 100;
615 if (option_given_p(opts, tmp)) {
616 VALUE max_nesting = rb_hash_aref(opts, tmp);
617 if (RTEST(max_nesting)) {
618 Check_Type(max_nesting, T_FIXNUM);
619 state->max_nesting = FIX2LONG(max_nesting);
620 } else {
621 state->max_nesting = 0;
622 }
623 }
624 tmp = ID2SYM(i_depth);
625 state->depth = 0;
626 if (option_given_p(opts, tmp)) {
627 VALUE depth = rb_hash_aref(opts, tmp);
628 if (RTEST(depth)) {
629 Check_Type(depth, T_FIXNUM);
630 state->depth = FIX2LONG(depth);
631 } else {
632 state->depth = 0;
633 }
634 }
635 tmp = ID2SYM(i_buffer_initial_length);
636 if (option_given_p(opts, tmp)) {
637 VALUE buffer_initial_length = rb_hash_aref(opts, tmp);
638 if (RTEST(buffer_initial_length)) {
639 long initial_length;
640 Check_Type(buffer_initial_length, T_FIXNUM);
641 initial_length = FIX2LONG(buffer_initial_length);
642 if (initial_length > 0) state->buffer_initial_length = initial_length;
643 }
644 }
645 tmp = rb_hash_aref(opts, ID2SYM(i_allow_nan));
646 state->allow_nan = RTEST(tmp);
647 tmp = rb_hash_aref(opts, ID2SYM(i_ascii_only));
648 state->ascii_only = RTEST(tmp);
649 return self;
650 }
651
652 static void set_state_ivars(VALUE hash, VALUE state)
653 {
654 VALUE ivars = rb_obj_instance_variables(state);
655 int i = 0;
656 for (i = 0; i < RARRAY_LEN(ivars); i++) {
657 VALUE key = rb_funcall(rb_ary_entry(ivars, i), i_to_s, 0);
658 long key_len = RSTRING_LEN(key);
659 VALUE value = rb_iv_get(state, StringValueCStr(key));
660 rb_hash_aset(hash, rb_str_intern(rb_str_substr(key, 1, key_len - 1)), value);
661 }
662 }
663
664 /*
665 * call-seq: to_h
666 *
667 * Returns the configuration instance variables as a hash, that can be
668 * passed to the configure method.
669 */
670 static VALUE cState_to_h(VALUE self)
671 {
672 VALUE result = rb_hash_new();
673 GET_STATE(self);
674 set_state_ivars(result, self);
675 rb_hash_aset(result, ID2SYM(i_indent), rb_str_new(state->indent, state->indent_len));
676 rb_hash_aset(result, ID2SYM(i_space), rb_str_new(state->space, state->space_len));
677 rb_hash_aset(result, ID2SYM(i_space_before), rb_str_new(state->space_before, state->space_before_len));
678 rb_hash_aset(result, ID2SYM(i_object_nl), rb_str_new(state->object_nl, state->object_nl_len));
679 rb_hash_aset(result, ID2SYM(i_array_nl), rb_str_new(state->array_nl, state->array_nl_len));
680 rb_hash_aset(result, ID2SYM(i_allow_nan), state->allow_nan ? Qtrue : Qfalse);
681 rb_hash_aset(result, ID2SYM(i_ascii_only), state->ascii_only ? Qtrue : Qfalse);
682 rb_hash_aset(result, ID2SYM(i_max_nesting), LONG2FIX(state->max_nesting));
683 rb_hash_aset(result, ID2SYM(i_depth), LONG2FIX(state->depth));
684 rb_hash_aset(result, ID2SYM(i_buffer_initial_length), LONG2FIX(state->buffer_initial_length));
685 return result;
686 }
687
688 /*
689 * call-seq: [](name)
690 *
691 * Returns the value returned by method +name+.
692 */
693 static VALUE cState_aref(VALUE self, VALUE name)
694 {
695 name = rb_funcall(name, i_to_s, 0);
696 if (RTEST(rb_funcall(self, i_respond_to_p, 1, name))) {
697 return rb_funcall(self, i_send, 1, name);
698 } else {
699 return rb_attr_get(self, rb_intern_str(rb_str_concat(rb_str_new2("@"), name)));
700 }
701 }
702
703 /*
704 * call-seq: []=(name, value)
705 *
706 * Sets the attribute name to value.
707 */
708 static VALUE cState_aset(VALUE self, VALUE name, VALUE value)
709 {
710 VALUE name_writer;
711
712 name = rb_funcall(name, i_to_s, 0);
713 name_writer = rb_str_cat2(rb_str_dup(name), "=");
714 if (RTEST(rb_funcall(self, i_respond_to_p, 1, name_writer))) {
715 return rb_funcall(self, i_send, 2, name_writer, value);
716 } else {
717 rb_ivar_set(self, rb_intern_str(rb_str_concat(rb_str_new2("@"), name)), value);
718 }
719 return Qnil;
720 }
721
722 struct hash_foreach_arg {
723 FBuffer *buffer;
724 JSON_Generator_State *state;
725 VALUE Vstate;
726 int iter;
727 };
728
729 static int
730 json_object_i(VALUE key, VALUE val, VALUE _arg)
731 {
732 struct hash_foreach_arg *arg = (struct hash_foreach_arg *)_arg;
733 FBuffer *buffer = arg->buffer;
734 JSON_Generator_State *state = arg->state;
735 VALUE Vstate = arg->Vstate;
736
737 char *object_nl = state->object_nl;
738 long object_nl_len = state->object_nl_len;
739 char *indent = state->indent;
740 long indent_len = state->indent_len;
741 char *delim = FBUFFER_PTR(state->object_delim);
742 long delim_len = FBUFFER_LEN(state->object_delim);
743 char *delim2 = FBUFFER_PTR(state->object_delim2);
744 long delim2_len = FBUFFER_LEN(state->object_delim2);
745 long depth = state->depth;
746 int j;
747 VALUE klass, key_to_s;
748
749 if (arg->iter > 0) fbuffer_append(buffer, delim, delim_len);
750 if (object_nl) {
751 fbuffer_append(buffer, object_nl, object_nl_len);
752 }
753 if (indent) {
754 for (j = 0; j < depth; j++) {
755 fbuffer_append(buffer, indent, indent_len);
756 }
757 }
758
759 klass = CLASS_OF(key);
760 if (klass == rb_cString) {
761 key_to_s = key;
762 } else if (klass == rb_cSymbol) {
763 key_to_s = rb_id2str(SYM2ID(key));
764 } else {
765 key_to_s = rb_funcall(key, i_to_s, 0);
766 }
767 Check_Type(key_to_s, T_STRING);
768 generate_json(buffer, Vstate, state, key_to_s);
769 fbuffer_append(buffer, delim2, delim2_len);
770 generate_json(buffer, Vstate, state, val);
771
772 arg->iter++;
773 return ST_CONTINUE;
774 }
775
776 static void generate_json_object(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj)
777 {
778 char *object_nl = state->object_nl;
779 long object_nl_len = state->object_nl_len;
780 char *indent = state->indent;
781 long indent_len = state->indent_len;
782 long max_nesting = state->max_nesting;
783 long depth = ++state->depth;
784 int j;
785 struct hash_foreach_arg arg;
786
787 if (max_nesting != 0 && depth > max_nesting) {
788 fbuffer_free(buffer);
789 rb_raise(eNestingError, "nesting of %ld is too deep", --state->depth);
790 }
791 fbuffer_append_char(buffer, '{');
792
793 arg.buffer = buffer;
794 arg.state = state;
795 arg.Vstate = Vstate;
796 arg.iter = 0;
797 rb_hash_foreach(obj, json_object_i, (VALUE)&arg);
798
799 depth = --state->depth;
800 if (object_nl) {
801 fbuffer_append(buffer, object_nl, object_nl_len);
802 if (indent) {
803 for (j = 0; j < depth; j++) {
804 fbuffer_append(buffer, indent, indent_len);
805 }
806 }
807 }
808 fbuffer_append_char(buffer, '}');
809 }
810
811 static void generate_json_array(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj)
812 {
813 char *array_nl = state->array_nl;
814 long array_nl_len = state->array_nl_len;
815 char *indent = state->indent;
816 long indent_len = state->indent_len;
817 long max_nesting = state->max_nesting;
818 char *delim = FBUFFER_PTR(state->array_delim);
819 long delim_len = FBUFFER_LEN(state->array_delim);
820 long depth = ++state->depth;
821 int i, j;
822 if (max_nesting != 0 && depth > max_nesting) {
823 fbuffer_free(buffer);
824 rb_raise(eNestingError, "nesting of %ld is too deep", --state->depth);
825 }
826 fbuffer_append_char(buffer, '[');
827 if (array_nl) fbuffer_append(buffer, array_nl, array_nl_len);
828 for(i = 0; i < RARRAY_LEN(obj); i++) {
829 if (i > 0) fbuffer_append(buffer, delim, delim_len);
830 if (indent) {
831 for (j = 0; j < depth; j++) {
832 fbuffer_append(buffer, indent, indent_len);
833 }
834 }
835 generate_json(buffer, Vstate, state, rb_ary_entry(obj, i));
836 }
837 state->depth = --depth;
838 if (array_nl) {
839 fbuffer_append(buffer, array_nl, array_nl_len);
840 if (indent) {
841 for (j = 0; j < depth; j++) {
842 fbuffer_append(buffer, indent, indent_len);
843 }
844 }
845 }
846 fbuffer_append_char(buffer, ']');
847 }
848
849 #ifdef HAVE_RUBY_ENCODING_H
850 static int enc_utf8_compatible_p(rb_encoding *enc)
851 {
852 if (enc == rb_usascii_encoding()) return 1;
853 if (enc == rb_utf8_encoding()) return 1;
854 return 0;
855 }
856 #endif
857
858 static void generate_json_string(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj)
859 {
860 fbuffer_append_char(buffer, '"');
861 #ifdef HAVE_RUBY_ENCODING_H
862 if (!enc_utf8_compatible_p(rb_enc_get(obj))) {
863 obj = rb_str_encode(obj, CEncoding_UTF_8, 0, Qnil);
864 }
865 #endif
866 if (state->ascii_only) {
867 convert_UTF8_to_JSON_ASCII(buffer, obj);
868 } else {
869 convert_UTF8_to_JSON(buffer, obj);
870 }
871 fbuffer_append_char(buffer, '"');
872 }
873
874 static void generate_json_null(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj)
875 {
876 fbuffer_append(buffer, "null", 4);
877 }
878
879 static void generate_json_false(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj)
880 {
881 fbuffer_append(buffer, "false", 5);
882 }
883
884 static void generate_json_true(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj)
885 {
886 fbuffer_append(buffer, "true", 4);
887 }
888
889 static void generate_json_fixnum(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj)
890 {
891 fbuffer_append_long(buffer, FIX2LONG(obj));
892 }
893
894 static void generate_json_bignum(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj)
895 {
896 VALUE tmp = rb_funcall(obj, i_to_s, 0);
897 fbuffer_append_str(buffer, tmp);
898 }
899
900 #ifdef RUBY_INTEGER_UNIFICATION
901 static void generate_json_integer(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj)
902 {
903 if (FIXNUM_P(obj))
904 generate_json_fixnum(buffer, Vstate, state, obj);
905 else
906 generate_json_bignum(buffer, Vstate, state, obj);
907 }
908 #endif
909 static void generate_json_float(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj)
910 {
911 double value = RFLOAT_VALUE(obj);
912 char allow_nan = state->allow_nan;
913 VALUE tmp = rb_funcall(obj, i_to_s, 0);
914 if (!allow_nan) {
915 if (isinf(value)) {
916 fbuffer_free(buffer);
917 rb_raise(eGeneratorError, "%u: %"PRIsVALUE" not allowed in JSON", __LINE__, RB_OBJ_STRING(tmp));
918 } else if (isnan(value)) {
919 fbuffer_free(buffer);
920 rb_raise(eGeneratorError, "%u: %"PRIsVALUE" not allowed in JSON", __LINE__, RB_OBJ_STRING(tmp));
921 }
922 }
923 fbuffer_append_str(buffer, tmp);
924 }
925
926 static void generate_json(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj)
927 {
928 VALUE tmp;
929 VALUE klass = CLASS_OF(obj);
930 if (klass == rb_cHash) {
931 generate_json_object(buffer, Vstate, state, obj);
932 } else if (klass == rb_cArray) {
933 generate_json_array(buffer, Vstate, state, obj);
934 } else if (klass == rb_cString) {
935 generate_json_string(buffer, Vstate, state, obj);
936 } else if (obj == Qnil) {
937 generate_json_null(buffer, Vstate, state, obj);
938 } else if (obj == Qfalse) {
939 generate_json_false(buffer, Vstate, state, obj);
940 } else if (obj == Qtrue) {
941 generate_json_true(buffer, Vstate, state, obj);
942 } else if (FIXNUM_P(obj)) {
943 generate_json_fixnum(buffer, Vstate, state, obj);
944 } else if (RB_TYPE_P(obj, T_BIGNUM)) {
945 generate_json_bignum(buffer, Vstate, state, obj);
946 } else if (klass == rb_cFloat) {
947 generate_json_float(buffer, Vstate, state, obj);
948 } else if (rb_respond_to(obj, i_to_json)) {
949 tmp = rb_funcall(obj, i_to_json, 1, Vstate);
950 Check_Type(tmp, T_STRING);
951 fbuffer_append_str(buffer, tmp);
952 } else {
953 tmp = rb_funcall(obj, i_to_s, 0);
954 Check_Type(tmp, T_STRING);
955 generate_json_string(buffer, Vstate, state, tmp);
956 }
957 }
958
959 static FBuffer *cState_prepare_buffer(VALUE self)
960 {
961 FBuffer *buffer;
962 GET_STATE(self);
963 buffer = fbuffer_alloc(state->buffer_initial_length);
964
965 if (state->object_delim) {
966 fbuffer_clear(state->object_delim);
967 } else {
968 state->object_delim = fbuffer_alloc(16);
969 }
970 fbuffer_append_char(state->object_delim, ',');
971 if (state->object_delim2) {
972 fbuffer_clear(state->object_delim2);
973 } else {
974 state->object_delim2 = fbuffer_alloc(16);
975 }
976 if (state->space_before) fbuffer_append(state->object_delim2, state->space_before, state->space_before_len);
977 fbuffer_append_char(state->object_delim2, ':');
978 if (state->space) fbuffer_append(state->object_delim2, state->space, state->space_len);
979
980 if (state->array_delim) {
981 fbuffer_clear(state->array_delim);
982 } else {
983 state->array_delim = fbuffer_alloc(16);
984 }
985 fbuffer_append_char(state->array_delim, ',');
986 if (state->array_nl) fbuffer_append(state->array_delim, state->array_nl, state->array_nl_len);
987 return buffer;
988 }
989
990 static VALUE cState_partial_generate(VALUE self, VALUE obj)
991 {
992 FBuffer *buffer = cState_prepare_buffer(self);
993 GET_STATE(self);
994 generate_json(buffer, self, state, obj);
995 return fbuffer_to_s(buffer);
996 }
997
998 /*
999 * call-seq: generate(obj)
1000 *
1001 * Generates a valid JSON document from object +obj+ and returns the
1002 * result. If no valid JSON document can be created this method raises a
1003 * GeneratorError exception.
1004 */
1005 static VALUE cState_generate(VALUE self, VALUE obj)
1006 {
1007 VALUE result = cState_partial_generate(self, obj);
1008 GET_STATE(self);
1009 (void)state;
1010 return result;
1011 }
1012
1013 /*
1014 * call-seq: new(opts = {})
1015 *
1016 * Instantiates a new State object, configured by _opts_.
1017 *
1018 * _opts_ can have the following keys:
1019 *
1020 * * *indent*: a string used to indent levels (default: ''),
1021 * * *space*: a string that is put after, a : or , delimiter (default: ''),
1022 * * *space_before*: a string that is put before a : pair delimiter (default: ''),
1023 * * *object_nl*: a string that is put at the end of a JSON object (default: ''),
1024 * * *array_nl*: a string that is put at the end of a JSON array (default: ''),
1025 * * *allow_nan*: true if NaN, Infinity, and -Infinity should be
1026 * generated, otherwise an exception is thrown, if these values are
1027 * encountered. This options defaults to false.
1028 * * *ascii_only*: true if only ASCII characters should be generated. This
1029 * ontions defaults to false.
1030 * * *buffer_initial_length*: sets the initial length of the generator's
1031 * internal buffer.
1032 */
1033 static VALUE cState_initialize(int argc, VALUE *argv, VALUE self)
1034 {
1035 VALUE opts;
1036 GET_STATE(self);
1037 state->max_nesting = 100;
1038 state->buffer_initial_length = FBUFFER_INITIAL_LENGTH_DEFAULT;
1039 rb_scan_args(argc, argv, "01", &opts);
1040 if (!NIL_P(opts)) cState_configure(self, opts);
1041 return self;
1042 }
1043
1044 /*
1045 * call-seq: initialize_copy(orig)
1046 *
1047 * Initializes this object from orig if it can be duplicated/cloned and returns
1048 * it.
1049 */
1050 static VALUE cState_init_copy(VALUE obj, VALUE orig)
1051 {
1052 JSON_Generator_State *objState, *origState;
1053
1054 if (obj == orig) return obj;
1055 GET_STATE_TO(obj, objState);
1056 GET_STATE_TO(orig, origState);
1057 if (!objState) rb_raise(rb_eArgError, "unallocated JSON::State");
1058
1059 MEMCPY(objState, origState, JSON_Generator_State, 1);
1060 objState->indent = fstrndup(origState->indent, origState->indent_len);
1061 objState->space = fstrndup(origState->space, origState->space_len);
1062 objState->space_before = fstrndup(origState->space_before, origState->space_before_len);
1063 objState->object_nl = fstrndup(origState->object_nl, origState->object_nl_len);
1064 objState->array_nl = fstrndup(origState->array_nl, origState->array_nl_len);
1065 if (origState->array_delim) objState->array_delim = fbuffer_dup(origState->array_delim);
1066 if (origState->object_delim) objState->object_delim = fbuffer_dup(origState->object_delim);
1067 if (origState->object_delim2) objState->object_delim2 = fbuffer_dup(origState->object_delim2);
1068 return obj;
1069 }
1070
1071 /*
1072 * call-seq: from_state(opts)
1073 *
1074 * Creates a State object from _opts_, which ought to be Hash to create a
1075 * new State instance configured by _opts_, something else to create an
1076 * unconfigured instance. If _opts_ is a State object, it is just returned.
1077 */
1078 static VALUE cState_from_state_s(VALUE self, VALUE opts)
1079 {
1080 if (rb_obj_is_kind_of(opts, self)) {
1081 return opts;
1082 } else if (rb_obj_is_kind_of(opts, rb_cHash)) {
1083 return rb_funcall(self, i_new, 1, opts);
1084 } else {
1085 VALUE prototype = rb_const_get(mJSON, i_SAFE_STATE_PROTOTYPE);
1086 return rb_funcall(prototype, i_dup, 0);
1087 }
1088 }
1089
1090 /*
1091 * call-seq: indent()
1092 *
1093 * Returns the string that is used to indent levels in the JSON text.
1094 */
1095 static VALUE cState_indent(VALUE self)
1096 {
1097 GET_STATE(self);
1098 return state->indent ? rb_str_new(state->indent, state->indent_len) : rb_str_new2("");
1099 }
1100
1101 /*
1102 * call-seq: indent=(indent)
1103 *
1104 * Sets the string that is used to indent levels in the JSON text.
1105 */
1106 static VALUE cState_indent_set(VALUE self, VALUE indent)
1107 {
1108 unsigned long len;
1109 GET_STATE(self);
1110 Check_Type(indent, T_STRING);
1111 len = RSTRING_LEN(indent);
1112 if (len == 0) {
1113 if (state->indent) {
1114 ruby_xfree(state->indent);
1115 state->indent = NULL;
1116 state->indent_len = 0;
1117 }
1118 } else {
1119 if (state->indent) ruby_xfree(state->indent);
1120 state->indent = fstrndup(RSTRING_PTR(indent), len);
1121 state->indent_len = len;
1122 }
1123 return Qnil;
1124 }
1125
1126 /*
1127 * call-seq: space()
1128 *
1129 * Returns the string that is used to insert a space between the tokens in a JSON
1130 * string.
1131 */
1132 static VALUE cState_space(VALUE self)
1133 {
1134 GET_STATE(self);
1135 return state->space ? rb_str_new(state->space, state->space_len) : rb_str_new2("");
1136 }
1137
1138 /*
1139 * call-seq: space=(space)
1140 *
1141 * Sets _space_ to the string that is used to insert a space between the tokens in a JSON
1142 * string.
1143 */
1144 static VALUE cState_space_set(VALUE self, VALUE space)
1145 {
1146 unsigned long len;
1147 GET_STATE(self);
1148 Check_Type(space, T_STRING);
1149 len = RSTRING_LEN(space);
1150 if (len == 0) {
1151 if (state->space) {
1152 ruby_xfree(state->space);
1153 state->space = NULL;
1154 state->space_len = 0;
1155 }
1156 } else {
1157 if (state->space) ruby_xfree(state->space);
1158 state->space = fstrndup(RSTRING_PTR(space), len);
1159 state->space_len = len;
1160 }
1161 return Qnil;
1162 }
1163
1164 /*
1165 * call-seq: space_before()
1166 *
1167 * Returns the string that is used to insert a space before the ':' in JSON objects.
1168 */
1169 static VALUE cState_space_before(VALUE self)
1170 {
1171 GET_STATE(self);
1172 return state->space_before ? rb_str_new(state->space_before, state->space_before_len) : rb_str_new2("");
1173 }
1174
1175 /*
1176 * call-seq: space_before=(space_before)
1177 *
1178 * Sets the string that is used to insert a space before the ':' in JSON objects.
1179 */
1180 static VALUE cState_space_before_set(VALUE self, VALUE space_before)
1181 {
1182 unsigned long len;
1183 GET_STATE(self);
1184 Check_Type(space_before, T_STRING);
1185 len = RSTRING_LEN(space_before);
1186 if (len == 0) {
1187 if (state->space_before) {
1188 ruby_xfree(state->space_before);
1189 state->space_before = NULL;
1190 state->space_before_len = 0;
1191 }
1192 } else {
1193 if (state->space_before) ruby_xfree(state->space_before);
1194 state->space_before = fstrndup(RSTRING_PTR(space_before), len);
1195 state->space_before_len = len;
1196 }
1197 return Qnil;
1198 }
1199
1200 /*
1201 * call-seq: object_nl()
1202 *
1203 * This string is put at the end of a line that holds a JSON object (or
1204 * Hash).
1205 */
1206 static VALUE cState_object_nl(VALUE self)
1207 {
1208 GET_STATE(self);
1209 return state->object_nl ? rb_str_new(state->object_nl, state->object_nl_len) : rb_str_new2("");
1210 }
1211
1212 /*
1213 * call-seq: object_nl=(object_nl)
1214 *
1215 * This string is put at the end of a line that holds a JSON object (or
1216 * Hash).
1217 */
1218 static VALUE cState_object_nl_set(VALUE self, VALUE object_nl)
1219 {
1220 unsigned long len;
1221 GET_STATE(self);
1222 Check_Type(object_nl, T_STRING);
1223 len = RSTRING_LEN(object_nl);
1224 if (len == 0) {
1225 if (state->object_nl) {
1226 ruby_xfree(state->object_nl);
1227 state->object_nl = NULL;
1228 }
1229 } else {
1230 if (state->object_nl) ruby_xfree(state->object_nl);
1231 state->object_nl = fstrndup(RSTRING_PTR(object_nl), len);
1232 state->object_nl_len = len;
1233 }
1234 return Qnil;
1235 }
1236
1237 /*
1238 * call-seq: array_nl()
1239 *
1240 * This string is put at the end of a line that holds a JSON array.
1241 */
1242 static VALUE cState_array_nl(VALUE self)
1243 {
1244 GET_STATE(self);
1245 return state->array_nl ? rb_str_new(state->array_nl, state->array_nl_len) : rb_str_new2("");
1246 }
1247
1248 /*
1249 * call-seq: array_nl=(array_nl)
1250 *
1251 * This string is put at the end of a line that holds a JSON array.
1252 */
1253 static VALUE cState_array_nl_set(VALUE self, VALUE array_nl)
1254 {
1255 unsigned long len;
1256 GET_STATE(self);
1257 Check_Type(array_nl, T_STRING);
1258 len = RSTRING_LEN(array_nl);
1259 if (len == 0) {
1260 if (state->array_nl) {
1261 ruby_xfree(state->array_nl);
1262 state->array_nl = NULL;
1263 }
1264 } else {
1265 if (state->array_nl) ruby_xfree(state->array_nl);
1266 state->array_nl = fstrndup(RSTRING_PTR(array_nl), len);
1267 state->array_nl_len = len;
1268 }
1269 return Qnil;
1270 }
1271
1272
1273 /*
1274 * call-seq: check_circular?
1275 *
1276 * Returns true, if circular data structures should be checked,
1277 * otherwise returns false.
1278 */
1279 static VALUE cState_check_circular_p(VALUE self)
1280 {
1281 GET_STATE(self);
1282 return state->max_nesting ? Qtrue : Qfalse;
1283 }
1284
1285 /*
1286 * call-seq: max_nesting
1287 *
1288 * This integer returns the maximum level of data structure nesting in
1289 * the generated JSON, max_nesting = 0 if no maximum is checked.
1290 */
1291 static VALUE cState_max_nesting(VALUE self)
1292 {
1293 GET_STATE(self);
1294 return LONG2FIX(state->max_nesting);
1295 }
1296
1297 /*
1298 * call-seq: max_nesting=(depth)
1299 *
1300 * This sets the maximum level of data structure nesting in the generated JSON
1301 * to the integer depth, max_nesting = 0 if no maximum should be checked.
1302 */
1303 static VALUE cState_max_nesting_set(VALUE self, VALUE depth)
1304 {
1305 GET_STATE(self);
1306 Check_Type(depth, T_FIXNUM);
1307 return state->max_nesting = FIX2LONG(depth);
1308 }
1309
1310 /*
1311 * call-seq: allow_nan?
1312 *
1313 * Returns true, if NaN, Infinity, and -Infinity should be generated, otherwise
1314 * returns false.
1315 */
1316 static VALUE cState_allow_nan_p(VALUE self)
1317 {
1318 GET_STATE(self);
1319 return state->allow_nan ? Qtrue : Qfalse;
1320 }
1321
1322 /*
1323 * call-seq: ascii_only?
1324 *
1325 * Returns true, if only ASCII characters should be generated. Otherwise
1326 * returns false.
1327 */
1328 static VALUE cState_ascii_only_p(VALUE self)
1329 {
1330 GET_STATE(self);
1331 return state->ascii_only ? Qtrue : Qfalse;
1332 }
1333
1334 /*
1335 * call-seq: depth
1336 *
1337 * This integer returns the current depth of data structure nesting.
1338 */
1339 static VALUE cState_depth(VALUE self)
1340 {
1341 GET_STATE(self);
1342 return LONG2FIX(state->depth);
1343 }
1344
1345 /*
1346 * call-seq: depth=(depth)
1347 *
1348 * This sets the maximum level of data structure nesting in the generated JSON
1349 * to the integer depth, max_nesting = 0 if no maximum should be checked.
1350 */
1351 static VALUE cState_depth_set(VALUE self, VALUE depth)
1352 {
1353 GET_STATE(self);
1354 Check_Type(depth, T_FIXNUM);
1355 state->depth = FIX2LONG(depth);
1356 return Qnil;
1357 }
1358
1359 /*
1360 * call-seq: buffer_initial_length
1361 *
1362 * This integer returns the current initial length of the buffer.
1363 */
1364 static VALUE cState_buffer_initial_length(VALUE self)
1365 {
1366 GET_STATE(self);
1367 return LONG2FIX(state->buffer_initial_length);
1368 }
1369
1370 /*
1371 * call-seq: buffer_initial_length=(length)
1372 *
1373 * This sets the initial length of the buffer to +length+, if +length+ > 0,
1374 * otherwise its value isn't changed.
1375 */
1376 static VALUE cState_buffer_initial_length_set(VALUE self, VALUE buffer_initial_length)
1377 {
1378 long initial_length;
1379 GET_STATE(self);
1380 Check_Type(buffer_initial_length, T_FIXNUM);
1381 initial_length = FIX2LONG(buffer_initial_length);
1382 if (initial_length > 0) {
1383 state->buffer_initial_length = initial_length;
1384 }
1385 return Qnil;
1386 }
1387
1388 /*
1389 *
1390 */
1391 void Init_generator(void)
1392 {
1393 #undef rb_intern
1394 rb_require("json/common");
1395
1396 mJSON = rb_define_module("JSON");
1397 mExt = rb_define_module_under(mJSON, "Ext");
1398 mGenerator = rb_define_module_under(mExt, "Generator");
1399
1400 eGeneratorError = rb_path2class("JSON::GeneratorError");
1401 eNestingError = rb_path2class("JSON::NestingError");
1402 rb_gc_register_mark_object(eGeneratorError);
1403 rb_gc_register_mark_object(eNestingError);
1404
1405 cState = rb_define_class_under(mGenerator, "State", rb_cObject);
1406 rb_define_alloc_func(cState, cState_s_allocate);
1407 rb_define_singleton_method(cState, "from_state", cState_from_state_s, 1);
1408 rb_define_method(cState, "initialize", cState_initialize, -1);
1409 rb_define_method(cState, "initialize_copy", cState_init_copy, 1);
1410 rb_define_method(cState, "indent", cState_indent, 0);
1411 rb_define_method(cState, "indent=", cState_indent_set, 1);
1412 rb_define_method(cState, "space", cState_space, 0);
1413 rb_define_method(cState, "space=", cState_space_set, 1);
1414 rb_define_method(cState, "space_before", cState_space_before, 0);
1415 rb_define_method(cState, "space_before=", cState_space_before_set, 1);
1416 rb_define_method(cState, "object_nl", cState_object_nl, 0);
1417 rb_define_method(cState, "object_nl=", cState_object_nl_set, 1);
1418 rb_define_method(cState, "array_nl", cState_array_nl, 0);
1419 rb_define_method(cState, "array_nl=", cState_array_nl_set, 1);
1420 rb_define_method(cState, "max_nesting", cState_max_nesting, 0);
1421 rb_define_method(cState, "max_nesting=", cState_max_nesting_set, 1);
1422 rb_define_method(cState, "check_circular?", cState_check_circular_p, 0);
1423 rb_define_method(cState, "allow_nan?", cState_allow_nan_p, 0);
1424 rb_define_method(cState, "ascii_only?", cState_ascii_only_p, 0);
1425 rb_define_method(cState, "depth", cState_depth, 0);
1426 rb_define_method(cState, "depth=", cState_depth_set, 1);
1427 rb_define_method(cState, "buffer_initial_length", cState_buffer_initial_length, 0);
1428 rb_define_method(cState, "buffer_initial_length=", cState_buffer_initial_length_set, 1);
1429 rb_define_method(cState, "configure", cState_configure, 1);
1430 rb_define_alias(cState, "merge", "configure");
1431 rb_define_method(cState, "to_h", cState_to_h, 0);
1432 rb_define_alias(cState, "to_hash", "to_h");
1433 rb_define_method(cState, "[]", cState_aref, 1);
1434 rb_define_method(cState, "[]=", cState_aset, 2);
1435 rb_define_method(cState, "generate", cState_generate, 1);
1436
1437 mGeneratorMethods = rb_define_module_under(mGenerator, "GeneratorMethods");
1438 mObject = rb_define_module_under(mGeneratorMethods, "Object");
1439 rb_define_method(mObject, "to_json", mObject_to_json, -1);
1440 mHash = rb_define_module_under(mGeneratorMethods, "Hash");
1441 rb_define_method(mHash, "to_json", mHash_to_json, -1);
1442 mArray = rb_define_module_under(mGeneratorMethods, "Array");
1443 rb_define_method(mArray, "to_json", mArray_to_json, -1);
1444 #ifdef RUBY_INTEGER_UNIFICATION
1445 mInteger = rb_define_module_under(mGeneratorMethods, "Integer");
1446 rb_define_method(mInteger, "to_json", mInteger_to_json, -1);
1447 #else
1448 mFixnum = rb_define_module_under(mGeneratorMethods, "Fixnum");
1449 rb_define_method(mFixnum, "to_json", mFixnum_to_json, -1);
1450 mBignum = rb_define_module_under(mGeneratorMethods, "Bignum");
1451 rb_define_method(mBignum, "to_json", mBignum_to_json, -1);
1452 #endif
1453 mFloat = rb_define_module_under(mGeneratorMethods, "Float");
1454 rb_define_method(mFloat, "to_json", mFloat_to_json, -1);
1455 mString = rb_define_module_under(mGeneratorMethods, "String");
1456 rb_define_singleton_method(mString, "included", mString_included_s, 1);
1457 rb_define_method(mString, "to_json", mString_to_json, -1);
1458 rb_define_method(mString, "to_json_raw", mString_to_json_raw, -1);
1459 rb_define_method(mString, "to_json_raw_object", mString_to_json_raw_object, 0);
1460 mString_Extend = rb_define_module_under(mString, "Extend");
1461 rb_define_method(mString_Extend, "json_create", mString_Extend_json_create, 1);
1462 mTrueClass = rb_define_module_under(mGeneratorMethods, "TrueClass");
1463 rb_define_method(mTrueClass, "to_json", mTrueClass_to_json, -1);
1464 mFalseClass = rb_define_module_under(mGeneratorMethods, "FalseClass");
1465 rb_define_method(mFalseClass, "to_json", mFalseClass_to_json, -1);
1466 mNilClass = rb_define_module_under(mGeneratorMethods, "NilClass");
1467 rb_define_method(mNilClass, "to_json", mNilClass_to_json, -1);
1468
1469 i_to_s = rb_intern("to_s");
1470 i_to_json = rb_intern("to_json");
1471 i_new = rb_intern("new");
1472 i_indent = rb_intern("indent");
1473 i_space = rb_intern("space");
1474 i_space_before = rb_intern("space_before");
1475 i_object_nl = rb_intern("object_nl");
1476 i_array_nl = rb_intern("array_nl");
1477 i_max_nesting = rb_intern("max_nesting");
1478 i_allow_nan = rb_intern("allow_nan");
1479 i_ascii_only = rb_intern("ascii_only");
1480 i_depth = rb_intern("depth");
1481 i_buffer_initial_length = rb_intern("buffer_initial_length");
1482 i_pack = rb_intern("pack");
1483 i_unpack = rb_intern("unpack");
1484 i_create_id = rb_intern("create_id");
1485 i_extend = rb_intern("extend");
1486 i_key_p = rb_intern("key?");
1487 i_aref = rb_intern("[]");
1488 i_send = rb_intern("__send__");
1489 i_respond_to_p = rb_intern("respond_to?");
1490 i_match = rb_intern("match");
1491 i_keys = rb_intern("keys");
1492 i_dup = rb_intern("dup");
1493 #ifdef HAVE_RUBY_ENCODING_H
1494 CEncoding_UTF_8 = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("utf-8"));
1495 i_encoding = rb_intern("encoding");
1496 i_encode = rb_intern("encode");
1497 #endif
1498 i_SAFE_STATE_PROTOTYPE = rb_intern("SAFE_STATE_PROTOTYPE");
1499 }
rb_cArray
VALUE rb_cArray
Definition: array.c:27
JSON_Generator_StateStruct::object_nl
char * object_nl
Definition: generator.h:65
ID
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Definition: ruby.h:103
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Definition: gc.c:10150
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Definition: string.c:3065
void
void
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#define rb_str_new2
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Definition: generator.h:70
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Definition: gc.c:7063
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Definition: generator.h:66
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Definition: error.c:923
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Tries to convert an object into another type.
Definition: object.c:2941
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Definition: generator.h:75
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Defines a singleton method for obj.
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Definition: generator.h:58
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Definition: generator.h:82
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Defines an alias of a method.
Definition: class.c:1800
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Definition: vm_method.c:2190
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#define ALLOC_N(type, n)
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Definition: error.c:2669
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Definition: generator.h:69
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const VALUE VALUE obj
Definition: rb_mjit_min_header-2.7.0.h:5742
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Equivalent to Object#class in Ruby.
Definition: object.c:217
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UTF8
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Definition: encoding.h:115
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Definition: generator.h:73
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Definition: generator.h:59
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RUBY_EXTERN VALUE rb_cSymbol
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Definition: hash.c:92
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Definition: generator.h:63
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Definition: rb_mjit_min_header-2.7.0.h:5601
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@ ST_CONTINUE
Definition: st.h:99
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Definition: rb_mjit_min_header-2.7.0.h:13254
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Definition: encoding.c:1328
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Converts an object into another type.
Definition: object.c:2900
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Definition: generator.h:30
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Definition: ruby.h:2044
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Definition: ruby.h:482
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Definition: generator.h:74
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Definition: ruby.c:222
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Definition: generator.h:67
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Defines a class under the namespace of outer.
Definition: class.c:698
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Definition: ruby.h:1005
generator.h
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Definition: generator.c:725
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Definition: generator.h:60
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Definition: generator.h:61
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Determines if obj is a kind of c.
Definition: object.c:692
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void rb_define_alloc_func(VALUE, rb_alloc_func_t)
RTEST
#define RTEST(v)
Definition: ruby.h:481
SYM2ID
#define SYM2ID(x)
Definition: ruby.h:415
UNI_MAX_BMP
#define UNI_MAX_BMP
Definition: generator.h:34
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Definition: encoding.c:1340
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Definition: nkf.c:208
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Definition: variable.c:2387