-
Notifications
You must be signed in to change notification settings - Fork 29
/
base.h
804 lines (667 loc) · 18.2 KB
/
base.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
// Copyright (c)2008-2012, Preferred Infrastructure Inc.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
//
// * Neither the name of Preferred Infrastructure nor the names of other
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef JUBATUS_UTIL_TEXT_JSON_BASE_H_
#define JUBATUS_UTIL_TEXT_JSON_BASE_H_
#include <stdint.h>
#include <cmath>
#include <iostream>
#include <iomanip>
#include <stdexcept>
#include <sstream>
#include <string>
#include <typeinfo>
#include <vector>
#include <memory>
#include "../../lang/shared_ptr.h"
#include "../../data/string/ustring.h"
#include "../../data/unordered_map.h"
namespace jubatus {
namespace util {
namespace text {
namespace json {
class json_bad_cast_any : public std::bad_cast {
public:
explicit json_bad_cast_any(const std::string& message)
: message_(message)
{}
~json_bad_cast_any() throw() {}
const char* what() const throw() {
return message_.c_str();
}
private:
std::string message_;
};
template <class T>
class json_bad_cast : public json_bad_cast_any {
public:
explicit json_bad_cast(const std::string& message)
: json_bad_cast_any(message)
{}
~json_bad_cast() throw() {}
};
class json_value;
class json {
public:
enum json_type_t {
Null,
Integer,
Float,
Bool,
String,
Array,
Object
};
struct iterator;
struct const_iterator;
json();
json(json_value* p): val(p) {}
json_type_t type() const;
json& operator[](const std::string& name);
json& operator[](size_t ix);
const json& operator[](const std::string& name) const;
const json& operator[](size_t ix) const;
size_t count(const std::string& name) const;
void add(const std::string& name, const json& v);
void add(const json& v);
template<typename F>
json merge_with(json& v, F f);
json merge(json& v);
size_t size() const;
iterator begin();
const_iterator begin() const;
iterator end();
const_iterator end() const;
json_value* get() const { return val.get(); }
void print(std::ostream& os, bool escape) const;
void pretty(std::ostream& os, bool escape) const;
json clone() const;
static const bool is_read = false;
private:
jubatus::util::lang::shared_ptr<json_value> val;
};
class json_value {
public:
virtual ~json_value() {}
virtual json::json_type_t type() const = 0;
virtual void print(std::ostream& os, bool escape) const = 0;
virtual void pretty(std::ostream& os, int /* level */, bool escape) const {
print(os, escape);
}
private:
virtual json_value* clone() const = 0;
friend class json;
};
class json_array : public json_value {
public:
json_array() {}
json::json_type_t type() const {
return json::Array;
}
size_t size() const {
return dat.size();
}
json &operator[](size_t ix) {
return dat[ix];
}
const json &operator[](size_t ix) const {
return dat[ix];
}
void add(const json& j){
dat.push_back(j);
}
void print(std::ostream& os, bool escape) const {
bool fst = true;
os << '[';
for (size_t i = 0; i < dat.size(); i++) {
if (fst)
fst = false;
else
os << ',';
dat[i].print(os, escape);
}
os << ']';
}
void pretty(std::ostream& os, int level, bool escape) const {
bool fst = true;
os << '[';
for (size_t i = 0; i < dat.size(); i++) {
if (fst) {
fst = false;
os << std::endl;
} else {
os << ',' << std::endl;
}
for (int j = 0; j < (level+1)*2; j++)
os << ' ';
dat[i].get()->pretty(os, level+1, escape);
}
os << std::endl;
for (int i=0; i<level*2; i++)
os << ' ';
os << ']';
}
private:
json_value* clone() const {
std::auto_ptr<json_array> arr(new json_array);
for (size_t i = 0; i < dat.size(); ++i)
arr->add(dat[i].clone());
return arr.release();
}
std::vector<json> dat;
};
class json_number : public json_value {};
class json_integer : public json_number{
public:
json_integer(int64_t n) : dat(n) {}
json::json_type_t type() const {
return json::Integer;
}
int64_t get() const { return dat; }
void print(std::ostream& os, bool /* escape */) const {
os << dat;
}
private:
json_value* clone() const {
return new json_integer(dat);
}
int64_t dat;
};
class json_float : public json_number{
public:
json_float(double d) : dat(d) {
if (!std::isfinite(d)) {
throw json_bad_cast<json_float>("value of json float must be finite");
}
}
json::json_type_t type() const {
return json::Float;
}
double get() const { return dat; }
void print(std::ostream& os, bool /* escape */) const {
const std::streamsize prec = os.precision();
try {
os << std::setprecision(12)
<< dat;
} catch (...) {
os << std::setprecision(prec);
throw;
}
os << std::setprecision(prec);
}
private:
json_value* clone() const {
return new json_float(dat);
}
double dat;
};
class json_string : public json_value{
public:
json_string(const std::string& s) : dat(s) {}
json::json_type_t type() const {
return json::String;
}
const std::string& get() const { return dat; }
void print(std::ostream& os, bool escape) const {
print(os, dat, escape);
}
static void print(std::ostream& os, const std::string& dat, bool escape) {
os << '"';
if (escape) {
const char* p = dat.c_str();
const char* end = p + dat.size();
while (*p) {
jubatus::util::data::string::uchar uc = jubatus::util::data::string::chars_to_uchar(p, end);
print_char(os, uc);
}
} else {
const char* p = dat.c_str();
while (*p) {
print_char_without_escape(os, *p++);
}
}
os << '"';
}
private:
json_value* clone() const {
return new json_string(dat);
}
static void print_char(std::ostream& os, jubatus::util::data::string::uchar u) {
static const char escs[] = {
'\x22', '\x5C', '\x2F', '\x08', '\x0C', '\x0A', '\x0D', '\x09'
};
static const char cnvs[] = {
'"', '\\', '/', 'b', 'f', 'n', 'r', 't'
};
static const int cnt = sizeof(escs) / sizeof(escs[0]);
if (u <= 0x7F){
char c = static_cast<char>(u);
for (int i = 0; i < cnt; i++){
if (escs[i] == c){
os << '\\' << cnvs[i];
return;
}
}
if (iscntrl(c)){
os << "\\u00" << tohex((c>>4) & 0xf) << tohex(c & 0xf);
return;
}
os << c;
} else {
os << "\\u"
<< tohex((u>>12) & 0xf)
<< tohex((u>>8) & 0xf)
<< tohex((u>>4) & 0xf)
<< tohex((u>>0) & 0xf);
}
}
static void print_char_without_escape(std::ostream& os, char c){
static const char escs[] = {
'\x22', '\x5C', '\x2F', '\x08', '\x0C', '\x0A', '\x0D', '\x09'
};
static const char cnvs[] = {
'"', '\\', '/', 'b', 'f', 'n', 'r', 't'
};
static const int cnt = sizeof(escs) / sizeof(escs[0]);
for (int i = 0; i < cnt; i++) {
if (escs[i] == c) {
os << '\\' << cnvs[i];
return;
}
}
if (iscntrl(c)) {
os << "\\u00" << tohex((c>>4) & 0xf) << tohex(c & 0xf);
return;
}
os << c;
}
static char tohex(int c){
if (c <= 9)
return '0' + c;
return 'A' + c - 10;
}
std::string dat;
};
class json_object : public json_value {
private:
struct return_second {
template <class T, class U>
U& operator()(const T&, U& x) const {
return x;
}
template <class T, class U>
const U& operator()(const T&, const U& x) const {
return x;
}
};
public:
typedef jubatus::util::data::unordered_map<std::string, json>::iterator iterator;
typedef jubatus::util::data::unordered_map<std::string, json>::const_iterator const_iterator;
typedef jubatus::util::data::unordered_map<std::string, json>::size_type size_type;
json_object() {}
json::json_type_t type() const {
return json::Object;
}
void add(const std::string& name, const json& j) {
member[name] = j;
}
template <class F>
json_object* merge_with(json_object* obj, F f) const {
std::auto_ptr<json_object> ret(new json_object);
for (const_iterator it = this->begin(); it != this->end(); ++it) {
ret->add(it->first,it->second);
}
for (const_iterator it = obj->begin(); it != obj->end(); ++it) {
if (ret->count(it->first) == 0){
ret->add(it->first,it->second);
} else {
json js = (*ret)[it->first];
ret->add(it->first,f(js,it->second));
}
}
return ret.release();
}
json_object* merge(json_object* obj) const {
return merge_with(obj, return_second());
}
json& operator[](const std::string& name) {
return member[name];
}
const json& operator[](const std::string& name) const {
const_iterator p = member.find(name);
if (p == member.end())
throw std::out_of_range("json_object::operator[]");
return p->second;
}
size_t count(const std::string& name) const {
return member.count(name);
}
iterator begin() { return member.begin(); }
const_iterator begin() const { return member.begin(); }
iterator end() { return member.end(); }
const_iterator end() const { return member.end(); }
size_type size() const { return member.size(); }
void print(std::ostream& os, bool escape) const {
bool fst = true;
os << '{';
for (const_iterator it = member.begin(), end = member.end(); it != end; ++it) {
if (fst)
fst = false;
else
os << ',';
json_string::print(os, it->first, escape);
os << ':';
it->second.print(os, escape);
}
os << '}';
}
void pretty(std::ostream& os, int level, bool escape) const {
bool fst = true;
os << '{';
for (const_iterator it = member.begin(), end = member.end(); it != end; ++it) {
if (fst) {
fst=false;
os << std::endl;
} else {
os << ',' << std::endl;
}
for (int i = 0; i < (level+1)*2; ++i)
os << ' ';
json_string::print(os, it->first, escape);
os << ": ";
it->second.get()->pretty(os, level+1, escape);
}
os << std::endl;
for (int i = 0; i < level*2; i++)
os << ' ';
os << '}';
}
private:
json_value* clone() const {
std::auto_ptr<json_object> obj(new json_object);
for (const_iterator it = member.begin(), end = member.end(); it != end; ++it)
obj->add(it->first, it->second.clone());
return obj.release();
}
jubatus::util::data::unordered_map<std::string, json> member;
};
class json_bool : public json_value {
public:
json_bool(bool b) : dat(b) {}
json::json_type_t type() const {
return json::Bool;
}
bool get() const { return dat; }
void print(std::ostream& os, bool /* escape */) const {
os << (dat ? "true" : "false");
}
private:
json_value* clone() const {
return new json_bool(dat);
}
bool dat;
};
class json_null : public json_value {
public:
json_null() {}
json::json_type_t type() const {
return json::Null;
}
void print(std::ostream& os, bool /* escape */) const {
os << "null";
}
private:
json_value* clone() const {
return new json_null();
}
};
template <class T>
inline bool is(const json &j)
{
return dynamic_cast<const T*>(j.get());
}
inline json::json() : val(new json_null())
{
}
inline json::json_type_t json::type() const
{
return val->type();
}
inline const json& json::operator[](const std::string& name) const
{
if (const json_object* p = dynamic_cast<const json_object*>(val.get()))
return (*p)[name];
else
throw json_bad_cast<json>("failed to use json as object.");
}
inline json& json::operator[](const std::string &name)
{
if (json_object* p = dynamic_cast<json_object*>(val.get()))
return (*p)[name];
else
throw json_bad_cast<json>("failed to use json as object.");
}
inline const json& json::operator[](size_t ix) const
{
if (const json_array*p = dynamic_cast<const json_array*>(val.get()))
return (*p)[ix];
else
throw json_bad_cast<json>("yailed to use json as array.");
}
inline json &json::operator[](size_t ix)
{
return const_cast<json&>(const_cast<json const&>(*this)[ix]);
}
inline size_t json::count(const std::string& name) const
{
if (const json_object* p = dynamic_cast<const json_object*>(val.get()))
return p->count(name);
else
throw json_bad_cast<size_t>("failed to use json as object.");
}
inline void json::add(const std::string& name, const json& v)
{
if (json_object* p = dynamic_cast<json_object*>(val.get()))
(*p)[name] = v;
else
throw json_bad_cast<void>("failed to use json as object.");
}
inline void json::add(const json& v)
{
if (json_array* p = dynamic_cast<json_array*>(val.get()))
p->add(v);
else
throw json_bad_cast<void>("failed to use json as array.");
}
template<typename F>
inline json json::merge_with(json& v, F f)
{
if (json_object* p = dynamic_cast<json_object*>(val.get()))
if (json_object* q = dynamic_cast<json_object*>(v.get()))
return json(p->merge_with(q, f));
else
throw json_bad_cast<json>("failed to use json as object.");
else
throw json_bad_cast<json>("failed to use json as object.");
}
inline json json::merge(json& v)
{
if (json_object* p = dynamic_cast<json_object*>(val.get()))
if (json_object* q = dynamic_cast<json_object*>(v.get()))
return json(p->merge(q));
else
throw json_bad_cast<json>("failed to use json as object.");
else
throw json_bad_cast<json>("failed to use json as object.");
}
inline size_t json::size() const
{
if (json_array* p = dynamic_cast<json_array*>(val.get()))
return p->size();
if (json_object* p = dynamic_cast<json_object*>(val.get()))
return p->size();
throw json_bad_cast<size_t>("You failed to use the json as an array or an object.");
}
struct json::iterator : json_object::iterator {
private:
typedef json_object::iterator base_;
public:
iterator() {}
iterator(const base_& it) : base_(it) {}
iterator& operator=(const base_& it) {
base_::operator=(it);
return *this;
}
};
struct json::const_iterator : json_object::const_iterator {
private:
typedef json_object::const_iterator base_;
public:
const_iterator() {}
template <class Other>
const_iterator(const Other& it) : base_(it) {}
template <class Other>
const_iterator& operator=(const Other& it) {
base_::operator=(it);
return *this;
}
};
inline json::iterator json::begin()
{
if (json_object* p = dynamic_cast<json_object*>(val.get()))
return p->begin();
else
throw json_bad_cast<iterator>("failed to use json as object.");
}
inline json::const_iterator json::begin() const
{
if (json_object* p = dynamic_cast<json_object*>(val.get()))
return p->begin();
else
throw json_bad_cast<const_iterator>("failed to use json as object.");
}
inline json::iterator json::end()
{
if (json_object* p = dynamic_cast<json_object*>(val.get()))
return p->end();
else
throw json_bad_cast<iterator>("failed to use json as object.");
}
inline json::const_iterator json::end() const
{
if (json_object* p = dynamic_cast<json_object*>(val.get()))
return p->end();
else
throw json_bad_cast<const_iterator>("failed to use json as object.");
}
inline void json::print(std::ostream& os, bool escape) const
{
val->print(os, escape);
}
inline void json::pretty(std::ostream& os, bool escape) const
{
val->pretty(os, 0, escape);
os << std::endl;
}
inline json json::clone() const
{
return json(val->clone());
}
template<typename F>
json merge_with(json js1, json js2, F f)
{
return js1.merge_with(js2, f);
}
inline json merge(json js1, json js2)
{
return js1.merge(js2);
}
template <class T>
class pretty_tag {
public:
pretty_tag(const T& dat) : dat(dat) {}
const T& dat;
};
template <class T>
pretty_tag<T> pretty(const T& v)
{
return pretty_tag<T>(v);
}
template <class T>
class without_escape_tag {
public:
without_escape_tag(const T& dat) : dat(dat) {}
const T& dat;
};
template <class T>
without_escape_tag<T> without_escape(const T& v)
{
return without_escape_tag<T>(v);
}
template <class T>
inline void gen_print(std::ostream& os, const T& js, bool pretty, bool escape)
{
if (pretty)
js.pretty(os, escape);
else
js.print(os, escape);
}
template <class T>
inline void gen_print(std::ostream& os, const pretty_tag<T>& js, bool /*pretty*/, bool escape)
{
gen_print(os, js.dat, true, escape);
}
template <class T>
inline void gen_print(std::ostream& os, const without_escape_tag<T>& js, bool pretty, bool /*escape*/)
{
gen_print(os, js.dat, pretty, false);
}
inline std::ostream& operator<<(std::ostream& os, const json& j)
{
gen_print(os, j, false, true);
return os;
}
template <class T>
inline std::ostream& operator<<(std::ostream& os, const pretty_tag<T>& j)
{
gen_print(os, j, false, true);
return os;
}
template <class T>
inline std::ostream& operator<<(std::ostream& os, const without_escape_tag<T>& j)
{
gen_print(os, j, false, true);
return os;
}
} // json
} // text
} // util
} // jubatus
#endif // #ifndef JUBATUS_UTIL_TEXT_JSON_BASE_H_