aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libs/icu/i18n/number_modifiers.cpp
blob: b74bfd06fc8e76bd9fdc070f804190ac7814bb4d (plain) (blame)
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
// © 2017 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html

#include "unicode/utypes.h"

#if !UCONFIG_NO_FORMATTING

#include "umutex.h"
#include "ucln_cmn.h"
#include "ucln_in.h"
#include "number_modifiers.h"

using namespace icu;
using namespace icu::number;
using namespace icu::number::impl;

namespace {

// TODO: This is copied from simpleformatter.cpp
const int32_t ARG_NUM_LIMIT = 0x100;

// These are the default currency spacing UnicodeSets in CLDR.
// Pre-compute them for performance.
// The Java unit test testCurrencySpacingPatternStability() will start failing if these change in CLDR.
icu::UInitOnce gDefaultCurrencySpacingInitOnce = U_INITONCE_INITIALIZER;

UnicodeSet *UNISET_DIGIT = nullptr;
UnicodeSet *UNISET_NOTSZ = nullptr;

UBool U_CALLCONV cleanupDefaultCurrencySpacing() {
    delete UNISET_DIGIT;
    UNISET_DIGIT = nullptr;
    delete UNISET_NOTSZ;
    UNISET_NOTSZ = nullptr;
    gDefaultCurrencySpacingInitOnce.reset();
    return TRUE;
}

void U_CALLCONV initDefaultCurrencySpacing(UErrorCode &status) {
    ucln_i18n_registerCleanup(UCLN_I18N_CURRENCY_SPACING, cleanupDefaultCurrencySpacing);
    UNISET_DIGIT = new UnicodeSet(UnicodeString(u"[:digit:]"), status);
    UNISET_NOTSZ = new UnicodeSet(UnicodeString(u"[[:^S:]&[:^Z:]]"), status);
    if (UNISET_DIGIT == nullptr || UNISET_NOTSZ == nullptr) {
        status = U_MEMORY_ALLOCATION_ERROR;
        return;
    }
    UNISET_DIGIT->freeze();
    UNISET_NOTSZ->freeze();
}

}  // namespace


Modifier::~Modifier() = default;

Modifier::Parameters::Parameters()
        : obj(nullptr) {}

Modifier::Parameters::Parameters(
    const ModifierStore* _obj, Signum _signum, StandardPlural::Form _plural)
        : obj(_obj), signum(_signum), plural(_plural) {}

ModifierStore::~ModifierStore() = default;

AdoptingModifierStore::~AdoptingModifierStore()  {
    for (const Modifier *mod : mods) {
        delete mod;
    }
}


int32_t ConstantAffixModifier::apply(FormattedStringBuilder &output, int leftIndex, int rightIndex,
                                     UErrorCode &status) const {
    // Insert the suffix first since inserting the prefix will change the rightIndex
    int length = output.insert(rightIndex, fSuffix, fField, status);
    length += output.insert(leftIndex, fPrefix, fField, status);
    return length;
}

int32_t ConstantAffixModifier::getPrefixLength() const {
    return fPrefix.length();
}

int32_t ConstantAffixModifier::getCodePointCount() const {
    return fPrefix.countChar32() + fSuffix.countChar32();
}

bool ConstantAffixModifier::isStrong() const {
    return fStrong;
}

bool ConstantAffixModifier::containsField(Field field) const {
    (void)field;
    // This method is not currently used.
    UPRV_UNREACHABLE_EXIT;
}

void ConstantAffixModifier::getParameters(Parameters& output) const {
    (void)output;
    // This method is not currently used.
    UPRV_UNREACHABLE_EXIT;
}

bool ConstantAffixModifier::semanticallyEquivalent(const Modifier& other) const {
    auto* _other = dynamic_cast<const ConstantAffixModifier*>(&other);
    if (_other == nullptr) {
        return false;
    }
    return fPrefix == _other->fPrefix
        && fSuffix == _other->fSuffix
        && fField == _other->fField
        && fStrong == _other->fStrong;
}


SimpleModifier::SimpleModifier(const SimpleFormatter &simpleFormatter, Field field, bool strong)
        : SimpleModifier(simpleFormatter, field, strong, {}) {}

SimpleModifier::SimpleModifier(const SimpleFormatter &simpleFormatter, Field field, bool strong,
                               const Modifier::Parameters parameters)
        : fCompiledPattern(simpleFormatter.compiledPattern), fField(field), fStrong(strong),
          fParameters(parameters) {
    int32_t argLimit = SimpleFormatter::getArgumentLimit(
            fCompiledPattern.getBuffer(), fCompiledPattern.length());
    if (argLimit == 0) {
        // No arguments in compiled pattern
        fPrefixLength = fCompiledPattern.charAt(1) - ARG_NUM_LIMIT;
        U_ASSERT(2 + fPrefixLength == fCompiledPattern.length());
        // Set suffixOffset = -1 to indicate no arguments in compiled pattern.
        fSuffixOffset = -1;
        fSuffixLength = 0;
    } else {
        U_ASSERT(argLimit == 1);
        if (fCompiledPattern.charAt(1) != 0) {
            // Found prefix
            fPrefixLength = fCompiledPattern.charAt(1) - ARG_NUM_LIMIT;
            fSuffixOffset = 3 + fPrefixLength;
        } else {
            // No prefix
            fPrefixLength = 0;
            fSuffixOffset = 2;
        }
        if (3 + fPrefixLength < fCompiledPattern.length()) {
            // Found suffix
            fSuffixLength = fCompiledPattern.charAt(fSuffixOffset) - ARG_NUM_LIMIT;
        } else {
            // No suffix
            fSuffixLength = 0;
        }
    }
}

SimpleModifier::SimpleModifier()
        : fField(kUndefinedField), fStrong(false), fPrefixLength(0), fSuffixLength(0) {
}

int32_t SimpleModifier::apply(FormattedStringBuilder &output, int leftIndex, int rightIndex,
                              UErrorCode &status) const {
    return formatAsPrefixSuffix(output, leftIndex, rightIndex, status);
}

int32_t SimpleModifier::getPrefixLength() const {
    return fPrefixLength;
}

int32_t SimpleModifier::getCodePointCount() const {
    int32_t count = 0;
    if (fPrefixLength > 0) {
        count += fCompiledPattern.countChar32(2, fPrefixLength);
    }
    if (fSuffixLength > 0) {
        count += fCompiledPattern.countChar32(1 + fSuffixOffset, fSuffixLength);
    }
    return count;
}

bool SimpleModifier::isStrong() const {
    return fStrong;
}

bool SimpleModifier::containsField(Field field) const {
    (void)field;
    // This method is not currently used.
    UPRV_UNREACHABLE_EXIT;
}

void SimpleModifier::getParameters(Parameters& output) const {
    output = fParameters;
}

bool SimpleModifier::semanticallyEquivalent(const Modifier& other) const {
    auto* _other = dynamic_cast<const SimpleModifier*>(&other);
    if (_other == nullptr) {
        return false;
    }
    if (fParameters.obj != nullptr) {
        return fParameters.obj == _other->fParameters.obj;
    }
    return fCompiledPattern == _other->fCompiledPattern
        && fField == _other->fField
        && fStrong == _other->fStrong;
}


int32_t
SimpleModifier::formatAsPrefixSuffix(FormattedStringBuilder &result, int32_t startIndex, int32_t endIndex,
                                     UErrorCode &status) const {
    if (fSuffixOffset == -1 && fPrefixLength + fSuffixLength > 0) {
        // There is no argument for the inner number; overwrite the entire segment with our string.
        return result.splice(startIndex, endIndex, fCompiledPattern, 2, 2 + fPrefixLength, fField, status);
    } else {
        if (fPrefixLength > 0) {
            result.insert(startIndex, fCompiledPattern, 2, 2 + fPrefixLength, fField, status);
        }
        if (fSuffixLength > 0) {
            result.insert(
                    endIndex + fPrefixLength,
                    fCompiledPattern,
                    1 + fSuffixOffset,
                    1 + fSuffixOffset + fSuffixLength,
                    fField,
                    status);
        }
        return fPrefixLength + fSuffixLength;
    }
}


int32_t
SimpleModifier::formatTwoArgPattern(const SimpleFormatter& compiled, FormattedStringBuilder& result,
                                    int32_t index, int32_t* outPrefixLength, int32_t* outSuffixLength,
                                    Field field, UErrorCode& status) {
    const UnicodeString& compiledPattern = compiled.compiledPattern;
    int32_t argLimit = SimpleFormatter::getArgumentLimit(
            compiledPattern.getBuffer(), compiledPattern.length());
    if (argLimit != 2) {
        status = U_INTERNAL_PROGRAM_ERROR;
        return 0;
    }
    int32_t offset = 1; // offset into compiledPattern
    int32_t length = 0; // chars added to result

    int32_t prefixLength = compiledPattern.charAt(offset);
    offset++;
    if (prefixLength < ARG_NUM_LIMIT) {
        // No prefix
        prefixLength = 0;
    } else {
        prefixLength -= ARG_NUM_LIMIT;
        result.insert(index + length, compiledPattern, offset, offset + prefixLength, field, status);
        offset += prefixLength;
        length += prefixLength;
        offset++;
    }

    int32_t infixLength = compiledPattern.charAt(offset);
    offset++;
    if (infixLength < ARG_NUM_LIMIT) {
        // No infix
        infixLength = 0;
    } else {
        infixLength -= ARG_NUM_LIMIT;
        result.insert(index + length, compiledPattern, offset, offset + infixLength, field, status);
        offset += infixLength;
        length += infixLength;
        offset++;
    }

    int32_t suffixLength;
    if (offset == compiledPattern.length()) {
        // No suffix
        suffixLength = 0;
    } else {
        suffixLength = compiledPattern.charAt(offset) -  ARG_NUM_LIMIT;
        offset++;
        result.insert(index + length, compiledPattern, offset, offset + suffixLength, field, status);
        length += suffixLength;
    }

    *outPrefixLength = prefixLength;
    *outSuffixLength = suffixLength;

    return length;
}


int32_t ConstantMultiFieldModifier::apply(FormattedStringBuilder &output, int leftIndex, int rightIndex,
                                          UErrorCode &status) const {
    int32_t length = output.insert(leftIndex, fPrefix, status);
    if (fOverwrite) {
        length += output.splice(
            leftIndex + length,
            rightIndex + length,
            UnicodeString(), 0, 0,
            kUndefinedField, status);
    }
    length += output.insert(rightIndex + length, fSuffix, status);
    return length;
}

int32_t ConstantMultiFieldModifier::getPrefixLength() const {
    return fPrefix.length();
}

int32_t ConstantMultiFieldModifier::getCodePointCount() const {
    return fPrefix.codePointCount() + fSuffix.codePointCount();
}

bool ConstantMultiFieldModifier::isStrong() const {
    return fStrong;
}

bool ConstantMultiFieldModifier::containsField(Field field) const {
    return fPrefix.containsField(field) || fSuffix.containsField(field);
}

void ConstantMultiFieldModifier::getParameters(Parameters& output) const {
    output = fParameters;
}

bool ConstantMultiFieldModifier::semanticallyEquivalent(const Modifier& other) const {
    auto* _other = dynamic_cast<const ConstantMultiFieldModifier*>(&other);
    if (_other == nullptr) {
        return false;
    }
    if (fParameters.obj != nullptr) {
        return fParameters.obj == _other->fParameters.obj;
    }
    return fPrefix.contentEquals(_other->fPrefix)
        && fSuffix.contentEquals(_other->fSuffix)
        && fOverwrite == _other->fOverwrite
        && fStrong == _other->fStrong;
}


CurrencySpacingEnabledModifier::CurrencySpacingEnabledModifier(const FormattedStringBuilder &prefix,
                                                               const FormattedStringBuilder &suffix,
                                                               bool overwrite,
                                                               bool strong,
                                                               const DecimalFormatSymbols &symbols,
                                                               UErrorCode &status)
        : ConstantMultiFieldModifier(prefix, suffix, overwrite, strong) {
    // Check for currency spacing. Do not build the UnicodeSets unless there is
    // a currency code point at a boundary.
    if (prefix.length() > 0 && prefix.fieldAt(prefix.length() - 1) == Field(UFIELD_CATEGORY_NUMBER, UNUM_CURRENCY_FIELD)) {
        int prefixCp = prefix.getLastCodePoint();
        UnicodeSet prefixUnicodeSet = getUnicodeSet(symbols, IN_CURRENCY, PREFIX, status);
        if (prefixUnicodeSet.contains(prefixCp)) {
            fAfterPrefixUnicodeSet = getUnicodeSet(symbols, IN_NUMBER, PREFIX, status);
            fAfterPrefixUnicodeSet.freeze();
            fAfterPrefixInsert = getInsertString(symbols, PREFIX, status);
        } else {
            fAfterPrefixUnicodeSet.setToBogus();
            fAfterPrefixInsert.setToBogus();
        }
    } else {
        fAfterPrefixUnicodeSet.setToBogus();
        fAfterPrefixInsert.setToBogus();
    }
    if (suffix.length() > 0 && suffix.fieldAt(0) == Field(UFIELD_CATEGORY_NUMBER, UNUM_CURRENCY_FIELD)) {
        int suffixCp = suffix.getFirstCodePoint();
        UnicodeSet suffixUnicodeSet = getUnicodeSet(symbols, IN_CURRENCY, SUFFIX, status);
        if (suffixUnicodeSet.contains(suffixCp)) {
            fBeforeSuffixUnicodeSet = getUnicodeSet(symbols, IN_NUMBER, SUFFIX, status);
            fBeforeSuffixUnicodeSet.freeze();
            fBeforeSuffixInsert = getInsertString(symbols, SUFFIX, status);
        } else {
            fBeforeSuffixUnicodeSet.setToBogus();
            fBeforeSuffixInsert.setToBogus();
        }
    } else {
        fBeforeSuffixUnicodeSet.setToBogus();
        fBeforeSuffixInsert.setToBogus();
    }
}

int32_t CurrencySpacingEnabledModifier::apply(FormattedStringBuilder &output, int leftIndex, int rightIndex,
                                              UErrorCode &status) const {
    // Currency spacing logic
    int length = 0;
    if (rightIndex - leftIndex > 0 && !fAfterPrefixUnicodeSet.isBogus() &&
        fAfterPrefixUnicodeSet.contains(output.codePointAt(leftIndex))) {
        // TODO: Should we use the CURRENCY field here?
        length += output.insert(
            leftIndex,
            fAfterPrefixInsert,
            kUndefinedField,
            status);
    }
    if (rightIndex - leftIndex > 0 && !fBeforeSuffixUnicodeSet.isBogus() &&
        fBeforeSuffixUnicodeSet.contains(output.codePointBefore(rightIndex))) {
        // TODO: Should we use the CURRENCY field here?
        length += output.insert(
            rightIndex + length,
            fBeforeSuffixInsert,
            kUndefinedField,
            status);
    }

    // Call super for the remaining logic
    length += ConstantMultiFieldModifier::apply(output, leftIndex, rightIndex + length, status);
    return length;
}

int32_t
CurrencySpacingEnabledModifier::applyCurrencySpacing(FormattedStringBuilder &output, int32_t prefixStart,
                                                     int32_t prefixLen, int32_t suffixStart,
                                                     int32_t suffixLen,
                                                     const DecimalFormatSymbols &symbols,
                                                     UErrorCode &status) {
    int length = 0;
    bool hasPrefix = (prefixLen > 0);
    bool hasSuffix = (suffixLen > 0);
    bool hasNumber = (suffixStart - prefixStart - prefixLen > 0); // could be empty string
    if (hasPrefix && hasNumber) {
        length += applyCurrencySpacingAffix(output, prefixStart + prefixLen, PREFIX, symbols, status);
    }
    if (hasSuffix && hasNumber) {
        length += applyCurrencySpacingAffix(output, suffixStart + length, SUFFIX, symbols, status);
    }
    return length;
}

int32_t
CurrencySpacingEnabledModifier::applyCurrencySpacingAffix(FormattedStringBuilder &output, int32_t index,
                                                          EAffix affix,
                                                          const DecimalFormatSymbols &symbols,
                                                          UErrorCode &status) {
    // NOTE: For prefix, output.fieldAt(index-1) gets the last field type in the prefix.
    // This works even if the last code point in the prefix is 2 code units because the
    // field value gets populated to both indices in the field array.
    Field affixField = (affix == PREFIX) ? output.fieldAt(index - 1) : output.fieldAt(index);
    if (affixField != Field(UFIELD_CATEGORY_NUMBER, UNUM_CURRENCY_FIELD)) {
        return 0;
    }
    int affixCp = (affix == PREFIX) ? output.codePointBefore(index) : output.codePointAt(index);
    UnicodeSet affixUniset = getUnicodeSet(symbols, IN_CURRENCY, affix, status);
    if (!affixUniset.contains(affixCp)) {
        return 0;
    }
    int numberCp = (affix == PREFIX) ? output.codePointAt(index) : output.codePointBefore(index);
    UnicodeSet numberUniset = getUnicodeSet(symbols, IN_NUMBER, affix, status);
    if (!numberUniset.contains(numberCp)) {
        return 0;
    }
    UnicodeString spacingString = getInsertString(symbols, affix, status);

    // NOTE: This next line *inserts* the spacing string, triggering an arraycopy.
    // It would be more efficient if this could be done before affixes were attached,
    // so that it could be prepended/appended instead of inserted.
    // However, the build code path is more efficient, and this is the most natural
    // place to put currency spacing in the non-build code path.
    // TODO: Should we use the CURRENCY field here?
    return output.insert(index, spacingString, kUndefinedField, status);
}

UnicodeSet
CurrencySpacingEnabledModifier::getUnicodeSet(const DecimalFormatSymbols &symbols, EPosition position,
                                              EAffix affix, UErrorCode &status) {
    // Ensure the static defaults are initialized:
    umtx_initOnce(gDefaultCurrencySpacingInitOnce, &initDefaultCurrencySpacing, status);
    if (U_FAILURE(status)) {
        return UnicodeSet();
    }

    const UnicodeString& pattern = symbols.getPatternForCurrencySpacing(
            position == IN_CURRENCY ? UNUM_CURRENCY_MATCH : UNUM_CURRENCY_SURROUNDING_MATCH,
            affix == SUFFIX,
            status);
    if (pattern.compare(u"[:digit:]", -1) == 0) {
        return *UNISET_DIGIT;
    } else if (pattern.compare(u"[[:^S:]&[:^Z:]]", -1) == 0) {
        return *UNISET_NOTSZ;
    } else {
        return UnicodeSet(pattern, status);
    }
}

UnicodeString
CurrencySpacingEnabledModifier::getInsertString(const DecimalFormatSymbols &symbols, EAffix affix,
                                                UErrorCode &status) {
    return symbols.getPatternForCurrencySpacing(UNUM_CURRENCY_INSERT, affix == SUFFIX, status);
}

#endif /* #if !UCONFIG_NO_FORMATTING */