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realm / realm-core / 2426

17 Jun 2024 08:56PM UTC coverage: 90.971% (+0.01%) from 90.961%
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87.23
/src/realm/array_string.cpp
1
/*************************************************************************
2
 *
3
 * Copyright 2016 Realm Inc.
4
 *
5
 * Licensed under the Apache License, Version 2.0 (the "License");
6
 * you may not use this file except in compliance with the License.
7
 * You may obtain a copy of the License at
8
 *
9
 * http://www.apache.org/licenses/LICENSE-2.0
10
 *
11
 * Unless required by applicable law or agreed to in writing, software
12
 * distributed under the License is distributed on an "AS IS" BASIS,
13
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14
 * See the License for the specific language governing permissions and
15
 * limitations under the License.
16
 *
17
 **************************************************************************/
18

19
#include <realm/array_string.hpp>
20
#include <realm/spec.hpp>
21
#include <realm/mixed.hpp>
22

23
using namespace realm;
24

25
ArrayString::ArrayString(Allocator& a)
26
    : m_alloc(a)
6,393,174✔
27
{
12,911,070✔
28
    m_arr = new (&m_storage) ArrayStringShort(a, true);
12,911,070✔
29
}
12,911,070✔
30

31
void ArrayString::create()
32
{
259,047✔
33
    static_cast<ArrayStringShort*>(m_arr)->create();
259,047✔
34
}
259,047✔
35

36
void ArrayString::init_from_mem(MemRef mem) noexcept
37
{
11,312,274✔
38
    char* header = mem.get_addr();
11,312,274✔
39

40
    ArrayParent* parent = m_arr->get_parent();
11,312,274✔
41
    size_t ndx_in_parent = m_arr->get_ndx_in_parent();
11,312,274✔
42

43
    bool long_strings = Array::get_hasrefs_from_header(header);
11,312,274✔
44
    if (!long_strings) {
11,312,274✔
45
        // Small strings
46
        bool is_small = Array::get_wtype_from_header(header) == Array::wtype_Multiply;
8,522,433✔
47
        if (is_small) {
8,522,433✔
48
            auto arr = new (&m_storage) ArrayStringShort(m_alloc, m_nullable);
4,810,104✔
49
            arr->init_from_mem(mem);
4,810,104✔
50
            m_type = Type::small_strings;
4,810,104✔
51
        }
4,810,104✔
52
        else {
3,712,329✔
53
            auto arr = new (&m_storage) Array(m_alloc);
3,712,329✔
54
            arr->init_from_mem(mem);
3,712,329✔
55
            m_string_enum_values = std::make_unique<ArrayString>(m_alloc);
3,712,329✔
56
            ArrayParent* p;
3,712,329✔
57
            REALM_ASSERT(m_spec != nullptr);
3,712,329✔
58
            REALM_ASSERT(m_col_ndx != realm::npos);
3,712,329✔
59
            ref_type r = m_spec->get_enumkeys_ref(m_col_ndx, p);
3,712,329✔
60
            m_string_enum_values->init_from_ref(r);
3,712,329✔
61
            m_string_enum_values->set_parent(p, m_col_ndx);
3,712,329✔
62
            m_type = Type::enum_strings;
3,712,329✔
63
        }
3,712,329✔
64
    }
8,522,433✔
65
    else {
2,789,841✔
66
        bool is_big = Array::get_context_flag_from_header(header);
2,789,841✔
67
        if (!is_big) {
2,789,841✔
68
            auto arr = new (&m_storage) ArraySmallBlobs(m_alloc);
703,575✔
69
            arr->init_from_mem(mem);
703,575✔
70
            m_type = Type::medium_strings;
703,575✔
71
        }
703,575✔
72
        else {
2,086,266✔
73
            auto arr = new (&m_storage) ArrayBigBlobs(m_alloc, m_nullable);
2,086,266✔
74
            arr->init_from_mem(mem);
2,086,266✔
75
            m_type = Type::big_strings;
2,086,266✔
76
        }
2,086,266✔
77
    }
2,789,841✔
78
    m_arr->set_parent(parent, ndx_in_parent);
11,312,274✔
79
}
11,312,274✔
80

81
void ArrayString::init_from_parent()
82
{
5,135,001✔
83
    ref_type ref = m_arr->get_ref_from_parent();
5,135,001✔
84
    init_from_ref(ref);
5,135,001✔
85
}
5,135,001✔
86

87
void ArrayString::destroy() noexcept
88
{
1,020✔
89
    if (m_arr->is_attached()) {
1,020✔
90
        Array::destroy_deep(m_arr->get_ref(), m_alloc);
456✔
91
        detach();
456✔
92
    }
456✔
93
}
1,020✔
94

95
void ArrayString::detach() noexcept
96
{
494,058✔
97
    m_arr->detach();
494,058✔
98
    // Make sure the object is in a state like right after construction
99
    // Next call must be to create()
100
    m_arr = new (&m_storage) ArrayStringShort(m_alloc, true);
494,058✔
101
    m_type = Type::small_strings;
494,058✔
102
}
494,058✔
103

104
size_t ArrayString::size() const
105
{
13,718,553✔
106
    switch (m_type) {
13,718,553✔
107
        case Type::small_strings:
4,739,970✔
108
            return static_cast<ArrayStringShort*>(m_arr)->size();
4,739,970✔
109
        case Type::medium_strings:
461,811✔
110
            return static_cast<ArraySmallBlobs*>(m_arr)->size();
461,811✔
111
        case Type::big_strings:
8,534,232✔
112
            return static_cast<ArrayBigBlobs*>(m_arr)->size();
8,534,232✔
113
        case Type::enum_strings:
246✔
114
            return static_cast<Array*>(m_arr)->size();
246✔
115
    }
13,718,553✔
116
    return {};
×
117
}
13,718,553✔
118

119
void ArrayString::add(StringData value)
120
{
137,493✔
121
    switch (upgrade_leaf(value.size())) {
137,493✔
122
        case Type::small_strings:
81,366✔
123
            static_cast<ArrayStringShort*>(m_arr)->add(value);
81,366✔
124
            break;
81,366✔
125
        case Type::medium_strings:
28,026✔
126
            static_cast<ArraySmallBlobs*>(m_arr)->add_string(value);
28,026✔
127
            break;
28,026✔
128
        case Type::big_strings:
28,101✔
129
            static_cast<ArrayBigBlobs*>(m_arr)->add_string(value);
28,101✔
130
            break;
28,101✔
131
        case Type::enum_strings: {
✔
132
            auto a = static_cast<Array*>(m_arr);
×
133
            size_t ndx = a->size();
×
134
            a->add(0);
×
135
            set(ndx, value);
×
136
            break;
×
137
        }
×
138
    }
137,493✔
139
}
137,493✔
140

141
void ArrayString::set(size_t ndx, StringData value)
142
{
3,768,117✔
143
    switch (upgrade_leaf(value.size())) {
3,768,117✔
144
        case Type::small_strings:
509,784✔
145
            static_cast<ArrayStringShort*>(m_arr)->set(ndx, value);
509,784✔
146
            break;
509,784✔
147
        case Type::medium_strings:
249,399✔
148
            static_cast<ArraySmallBlobs*>(m_arr)->set_string(ndx, value);
249,399✔
149
            break;
249,399✔
150
        case Type::big_strings:
384,651✔
151
            static_cast<ArrayBigBlobs*>(m_arr)->set_string(ndx, value);
384,651✔
152
            break;
384,651✔
153
        case Type::enum_strings: {
2,626,143✔
154
            size_t sz = m_string_enum_values->size();
2,626,143✔
155
            size_t res = m_string_enum_values->find_first(value, 0, sz);
2,626,143✔
156
            if (res == realm::not_found) {
2,626,143✔
157
                m_string_enum_values->add(value);
9,657✔
158
                res = sz;
9,657✔
159
            }
9,657✔
160
            static_cast<Array*>(m_arr)->set(ndx, res);
2,626,143✔
161
            break;
2,626,143✔
162
        }
×
163
    }
3,768,117✔
164
}
3,768,117✔
165

166
void ArrayString::insert(size_t ndx, StringData value)
167
{
3,471,669✔
168
    switch (upgrade_leaf(value.size())) {
3,471,669✔
169
        case Type::small_strings:
1,059,468✔
170
            static_cast<ArrayStringShort*>(m_arr)->insert(ndx, value);
1,059,468✔
171
            break;
1,059,468✔
172
        case Type::medium_strings:
294,546✔
173
            static_cast<ArraySmallBlobs*>(m_arr)->insert_string(ndx, value);
294,546✔
174
            break;
294,546✔
175
        case Type::big_strings:
806,001✔
176
            static_cast<ArrayBigBlobs*>(m_arr)->insert_string(ndx, value);
806,001✔
177
            break;
806,001✔
178
        case Type::enum_strings: {
1,313,019✔
179
            static_cast<Array*>(m_arr)->insert(ndx, 0);
1,313,019✔
180
            set(ndx, value);
1,313,019✔
181
        }
1,313,019✔
182
    }
3,471,669✔
183
}
3,471,669✔
184

185
StringData ArrayString::get(size_t ndx) const
186
{
19,250,676✔
187
    switch (m_type) {
19,250,676✔
188
        case Type::small_strings:
9,632,553✔
189
            return static_cast<ArrayStringShort*>(m_arr)->get(ndx);
9,632,553✔
190
        case Type::medium_strings:
918,213✔
191
            return static_cast<ArraySmallBlobs*>(m_arr)->get_string(ndx);
918,213✔
192
        case Type::big_strings:
7,552,755✔
193
            return static_cast<ArrayBigBlobs*>(m_arr)->get_string(ndx);
7,552,755✔
194
        case Type::enum_strings: {
1,151,559✔
195
            size_t index = size_t(static_cast<Array*>(m_arr)->get(ndx));
1,151,559✔
196
            return m_string_enum_values->get(index);
1,151,559✔
197
        }
×
198
    }
19,250,676✔
199
    return {};
×
200
}
19,250,676✔
201

202
StringData ArrayString::get_legacy(size_t ndx) const
203
{
×
204
    switch (m_type) {
×
205
        case Type::small_strings:
×
206
            return static_cast<ArrayStringShort*>(m_arr)->get(ndx);
×
207
        case Type::medium_strings:
×
208
            return static_cast<ArraySmallBlobs*>(m_arr)->get_string_legacy(ndx);
×
209
        case Type::big_strings:
×
210
            return static_cast<ArrayBigBlobs*>(m_arr)->get_string(ndx);
×
211
        case Type::enum_strings: {
×
212
            size_t index = size_t(static_cast<Array*>(m_arr)->get(ndx));
×
213
            return m_string_enum_values->get(index);
×
214
        }
×
215
    }
×
216
    return {};
×
217
}
×
218

219
Mixed ArrayString::get_any(size_t ndx) const
220
{
132,912✔
221
    return Mixed(get(ndx));
132,912✔
222
}
132,912✔
223

224
bool ArrayString::is_null(size_t ndx) const
225
{
3,813,072✔
226
    switch (m_type) {
3,813,072✔
227
        case Type::small_strings:
573,987✔
228
            return static_cast<ArrayStringShort*>(m_arr)->is_null(ndx);
573,987✔
229
        case Type::medium_strings:
18,939✔
230
            return static_cast<ArraySmallBlobs*>(m_arr)->is_null(ndx);
18,939✔
231
        case Type::big_strings:
3,220,149✔
232
            return static_cast<ArrayBigBlobs*>(m_arr)->is_null(ndx);
3,220,149✔
233
        case Type::enum_strings: {
✔
234
            size_t index = size_t(static_cast<Array*>(m_arr)->get(ndx));
×
235
            return m_string_enum_values->is_null(index);
×
236
        }
×
237
    }
3,813,072✔
238
    return {};
×
239
}
3,813,072✔
240

241
void ArrayString::erase(size_t ndx)
242
{
128,148✔
243
    switch (m_type) {
128,148✔
244
        case Type::small_strings:
36,282✔
245
            static_cast<ArrayStringShort*>(m_arr)->erase(ndx);
36,282✔
246
            break;
36,282✔
247
        case Type::medium_strings:
57,231✔
248
            static_cast<ArraySmallBlobs*>(m_arr)->erase(ndx);
57,231✔
249
            break;
57,231✔
250
        case Type::big_strings:
26,259✔
251
            static_cast<ArrayBigBlobs*>(m_arr)->erase(ndx);
26,259✔
252
            break;
26,259✔
253
        case Type::enum_strings:
8,376✔
254
            static_cast<Array*>(m_arr)->erase(ndx);
8,376✔
255
            break;
8,376✔
256
    }
128,148✔
257
}
128,148✔
258

259
void ArrayString::move(ArrayString& dst, size_t ndx)
260
{
66✔
261
    size_t sz = size();
66✔
262
    for (size_t i = ndx; i < sz; i++) {
20,730✔
263
        dst.add(get(i));
20,664✔
264
    }
20,664✔
265

266
    switch (m_type) {
66✔
267
        case Type::small_strings:
✔
268
            static_cast<ArrayStringShort*>(m_arr)->truncate(ndx);
×
269
            break;
×
270
        case Type::medium_strings:
60✔
271
            static_cast<ArraySmallBlobs*>(m_arr)->truncate(ndx);
60✔
272
            break;
60✔
273
        case Type::big_strings:
6✔
274
            static_cast<ArrayBigBlobs*>(m_arr)->truncate(ndx);
6✔
275
            break;
6✔
276
        case Type::enum_strings:
✔
277
            // this operation will never be called for enumerated columns
278
            REALM_UNREACHABLE();
279
            break;
×
280
    }
66✔
281
}
66✔
282

283
void ArrayString::clear()
284
{
354✔
285
    switch (m_type) {
354✔
286
        case Type::small_strings:
300✔
287
            static_cast<ArrayStringShort*>(m_arr)->clear();
300✔
288
            break;
300✔
289
        case Type::medium_strings:
6✔
290
            static_cast<ArraySmallBlobs*>(m_arr)->clear();
6✔
291
            break;
6✔
292
        case Type::big_strings:
48✔
293
            static_cast<ArrayBigBlobs*>(m_arr)->clear();
48✔
294
            break;
48✔
295
        case Type::enum_strings:
✔
296
            static_cast<Array*>(m_arr)->clear();
×
297
            break;
×
298
    }
354✔
299
}
354✔
300

301
size_t ArrayString::find_first(StringData value, size_t begin, size_t end) const noexcept
302
{
4,102,023✔
303
    switch (m_type) {
4,102,023✔
304
        case Type::small_strings:
3,118,863✔
305
            return static_cast<ArrayStringShort*>(m_arr)->find_first(value, begin, end);
3,118,863✔
306
        case Type::medium_strings: {
129,810✔
307
            BinaryData as_binary(value.data(), value.size());
129,810✔
308
            return static_cast<ArraySmallBlobs*>(m_arr)->find_first(as_binary, true, begin, end);
129,810✔
309
            break;
×
310
        }
×
311
        case Type::big_strings: {
256,710✔
312
            BinaryData as_binary(value.data(), value.size());
256,710✔
313
            return static_cast<ArrayBigBlobs*>(m_arr)->find_first(as_binary, true, begin, end);
256,710✔
314
            break;
×
315
        }
×
316
        case Type::enum_strings: {
597,111✔
317
            size_t sz = m_string_enum_values->size();
597,111✔
318
            size_t res = m_string_enum_values->find_first(value, 0, sz);
597,111✔
319
            if (res != realm::not_found) {
597,111✔
320
                return static_cast<Array*>(m_arr)->find_first(res, begin, end);
597,111✔
321
            }
597,111✔
322
            break;
×
323
        }
597,111✔
324
    }
4,102,023✔
325
    return not_found;
×
326
}
4,102,023✔
327

328
namespace {
329

330
template <class T>
331
inline StringData get_string(const T* arr, size_t ndx)
332
{
437,337✔
333
    return arr->get_string(ndx);
437,337✔
334
}
437,337✔
335

336
template <>
337
inline StringData get_string(const ArrayStringShort* arr, size_t ndx)
338
{
93,666✔
339
    return arr->get(ndx);
93,666✔
340
}
93,666✔
341

342
template <class T, class U>
343
size_t lower_bound_string(const T* arr, U value)
344
{
234,912✔
345
    size_t i = 0;
234,912✔
346
    size_t sz = arr->size();
234,912✔
347
    while (0 < sz) {
765,915✔
348
        size_t half = sz / 2;
531,003✔
349
        size_t mid = i + half;
531,003✔
350
        auto probe = get_string(arr, mid);
531,003✔
351
        if (probe < value) {
531,003✔
352
            i = mid + 1;
191,013✔
353
            sz -= half + 1;
191,013✔
354
        }
191,013✔
355
        else {
339,990✔
356
            sz = half;
339,990✔
357
        }
339,990✔
358
    }
531,003✔
359
    return i;
234,912✔
360
}
234,912✔
361
} // namespace
362

363
size_t ArrayString::lower_bound(StringData value)
364
{
234,912✔
365
    switch (m_type) {
234,912✔
366
        case Type::small_strings:
58,434✔
367
            return lower_bound_string(static_cast<ArrayStringShort*>(m_arr), value);
58,434✔
368
        case Type::medium_strings:
68,418✔
369
            return lower_bound_string(static_cast<ArraySmallBlobs*>(m_arr), value);
68,418✔
370
        case Type::big_strings:
108,060✔
371
            return lower_bound_string(static_cast<ArrayBigBlobs*>(m_arr), value);
108,060✔
372
        case Type::enum_strings:
✔
373
            break;
×
374
    }
234,912✔
375
    return realm::npos;
×
376
}
234,912✔
377

378
ArrayString::Type ArrayString::upgrade_leaf(size_t value_size)
379
{
7,373,868✔
380
    if (m_type == Type::big_strings)
7,373,868✔
381
        return Type::big_strings;
1,198,329✔
382

383
    if (m_type == Type::enum_strings)
6,175,539✔
384
        return Type::enum_strings;
3,939,150✔
385

386
    if (m_type == Type::medium_strings) {
2,236,389✔
387
        if (value_size <= medium_string_max_size)
532,026✔
388
            return Type::medium_strings;
531,549✔
389

390
        // Upgrade root leaf from medium to big strings
391
        auto string_medium = static_cast<ArraySmallBlobs*>(m_arr);
477✔
392
        ArrayBigBlobs big_blobs(m_alloc, true);
477✔
393
        big_blobs.create(); // Throws
477✔
394

395
        size_t n = string_medium->size();
477✔
396
        for (size_t i = 0; i < n; i++) {
9,822✔
397
            big_blobs.add_string(string_medium->get_string(i)); // Throws
9,345✔
398
        }
9,345✔
399
        auto parent = string_medium->get_parent();
477✔
400
        auto ndx_in_parent = string_medium->get_ndx_in_parent();
477✔
401
        string_medium->destroy();
477✔
402

403
        auto arr = new (&m_storage) ArrayBigBlobs(m_alloc, true);
477✔
404
        arr->init_from_mem(big_blobs.get_mem());
477✔
405
        arr->set_parent(parent, ndx_in_parent);
477✔
406
        arr->update_parent();
477✔
407

408
        m_type = Type::big_strings;
477✔
409
        return Type::big_strings;
477✔
410
    }
532,026✔
411

412
    // m_type == Type::small
413
    if (value_size <= small_string_max_size)
1,704,363✔
414
        return Type::small_strings;
1,650,315✔
415

416
    if (value_size <= medium_string_max_size) {
54,048✔
417
        // Upgrade root leaf from small to medium strings
418
        auto string_short = static_cast<ArrayStringShort*>(m_arr);
40,347✔
419
        ArraySmallBlobs string_long(m_alloc);
40,347✔
420
        string_long.create(); // Throws
40,347✔
421

422
        size_t n = string_short->size();
40,347✔
423
        for (size_t i = 0; i < n; i++) {
73,743✔
424
            string_long.add_string(string_short->get(i)); // Throws
33,396✔
425
        }
33,396✔
426
        auto parent = string_short->get_parent();
40,347✔
427
        auto ndx_in_parent = string_short->get_ndx_in_parent();
40,347✔
428
        string_short->destroy();
40,347✔
429

430
        auto arr = new (&m_storage) ArraySmallBlobs(m_alloc);
40,347✔
431
        arr->init_from_mem(string_long.get_mem());
40,347✔
432
        arr->set_parent(parent, ndx_in_parent);
40,347✔
433
        arr->update_parent();
40,347✔
434

435
        m_type = Type::medium_strings;
40,347✔
436
    }
40,347✔
437
    else {
13,701✔
438
        // Upgrade root leaf from small to big strings
439
        auto string_short = static_cast<ArrayStringShort*>(m_arr);
13,701✔
440
        ArrayBigBlobs big_blobs(m_alloc, true);
13,701✔
441
        big_blobs.create(); // Throws
13,701✔
442

443
        size_t n = string_short->size();
13,701✔
444
        for (size_t i = 0; i < n; i++) {
34,158✔
445
            big_blobs.add_string(string_short->get(i)); // Throws
20,457✔
446
        }
20,457✔
447
        auto parent = string_short->get_parent();
13,701✔
448
        auto ndx_in_parent = string_short->get_ndx_in_parent();
13,701✔
449
        string_short->destroy();
13,701✔
450

451
        auto arr = new (&m_storage) ArrayBigBlobs(m_alloc, true);
13,701✔
452
        arr->init_from_mem(big_blobs.get_mem());
13,701✔
453
        arr->set_parent(parent, ndx_in_parent);
13,701✔
454
        arr->update_parent();
13,701✔
455

456
        m_type = Type::big_strings;
13,701✔
457
    }
13,701✔
458

459
    return m_type;
54,048✔
460
}
1,704,363✔
461

462
void ArrayString::verify() const
463
{
187,785✔
464
#ifdef REALM_DEBUG
187,785✔
465
    switch (m_type) {
187,785✔
466
        case Type::small_strings:
181,344✔
467
            static_cast<ArrayStringShort*>(m_arr)->verify();
181,344✔
468
            break;
181,344✔
469
        case Type::medium_strings:
798✔
470
            static_cast<ArraySmallBlobs*>(m_arr)->verify();
798✔
471
            break;
798✔
472
        case Type::big_strings:
5,397✔
473
            static_cast<ArrayBigBlobs*>(m_arr)->verify();
5,397✔
474
            break;
5,397✔
475
        case Type::enum_strings:
246✔
476
            static_cast<Array*>(m_arr)->verify();
246✔
477
            break;
246✔
478
    }
187,785✔
479
#endif
187,785✔
480
}
187,785✔
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