/src/icu/source/i18n/number_utils.h
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1 | | // © 2017 and later: Unicode, Inc. and others. |
2 | | // License & terms of use: http://www.unicode.org/copyright.html |
3 | | |
4 | | #include "unicode/utypes.h" |
5 | | |
6 | | #if !UCONFIG_NO_FORMATTING |
7 | | #ifndef __NUMBER_UTILS_H__ |
8 | | #define __NUMBER_UTILS_H__ |
9 | | |
10 | | #include "unicode/numberformatter.h" |
11 | | #include "number_types.h" |
12 | | #include "number_decimalquantity.h" |
13 | | #include "number_scientific.h" |
14 | | #include "number_patternstring.h" |
15 | | #include "number_modifiers.h" |
16 | | #include "number_multiplier.h" |
17 | | #include "number_roundingutils.h" |
18 | | #include "decNumber.h" |
19 | | #include "charstr.h" |
20 | | #include "formatted_string_builder.h" |
21 | | |
22 | | U_NAMESPACE_BEGIN |
23 | | |
24 | | namespace number { |
25 | | namespace impl { |
26 | | |
27 | | enum CldrPatternStyle { |
28 | | CLDR_PATTERN_STYLE_DECIMAL, |
29 | | CLDR_PATTERN_STYLE_CURRENCY, |
30 | | CLDR_PATTERN_STYLE_ACCOUNTING, |
31 | | CLDR_PATTERN_STYLE_PERCENT, |
32 | | CLDR_PATTERN_STYLE_SCIENTIFIC, |
33 | | CLDR_PATTERN_STYLE_COUNT, |
34 | | }; |
35 | | |
36 | | // Namespace for naked functions |
37 | | namespace utils { |
38 | | |
39 | | inline int32_t insertDigitFromSymbols(FormattedStringBuilder& output, int32_t index, int8_t digit, |
40 | | const DecimalFormatSymbols& symbols, Field field, |
41 | 0 | UErrorCode& status) { |
42 | 0 | if (symbols.getCodePointZero() != -1) { |
43 | 0 | return output.insertCodePoint(index, symbols.getCodePointZero() + digit, field, status); |
44 | 0 | } |
45 | 0 | return output.insert(index, symbols.getConstDigitSymbol(digit), field, status); |
46 | 0 | } |
47 | | |
48 | 0 | inline bool unitIsCurrency(const MeasureUnit& unit) { |
49 | 0 | return uprv_strcmp("currency", unit.getType()) == 0; |
50 | 0 | } |
51 | | |
52 | 0 | inline bool unitIsBaseUnit(const MeasureUnit& unit) { |
53 | 0 | return unit == MeasureUnit(); |
54 | 0 | } |
55 | | |
56 | 0 | inline bool unitIsPercent(const MeasureUnit& unit) { |
57 | 0 | return uprv_strcmp("percent", unit.getSubtype()) == 0; |
58 | 0 | } |
59 | | |
60 | 0 | inline bool unitIsPermille(const MeasureUnit& unit) { |
61 | 0 | return uprv_strcmp("permille", unit.getSubtype()) == 0; |
62 | 0 | } |
63 | | |
64 | | // NOTE: In Java, this method is in NumberFormat.java |
65 | | const char16_t* |
66 | | getPatternForStyle(const Locale& locale, const char* nsName, CldrPatternStyle style, UErrorCode& status); |
67 | | |
68 | | /** |
69 | | * Computes the plural form for this number based on the specified set of rules. |
70 | | * |
71 | | * @param rules A {@link PluralRules} object representing the set of rules. |
72 | | * @return The {@link StandardPlural} according to the PluralRules. If the plural form is not in |
73 | | * the set of standard plurals, {@link StandardPlural#OTHER} is returned instead. |
74 | | */ |
75 | | inline StandardPlural::Form getStandardPlural(const PluralRules *rules, |
76 | 0 | const IFixedDecimal &fdec) { |
77 | 0 | if (rules == nullptr) { |
78 | | // Fail gracefully if the user didn't provide a PluralRules |
79 | 0 | return StandardPlural::Form::OTHER; |
80 | 0 | } else { |
81 | 0 | UnicodeString ruleString = rules->select(fdec); |
82 | 0 | return StandardPlural::orOtherFromString(ruleString); |
83 | 0 | } |
84 | 0 | } |
85 | | |
86 | | /** |
87 | | * Computes the plural form after copying the number and applying rounding rules. |
88 | | */ |
89 | | inline StandardPlural::Form getPluralSafe( |
90 | | const RoundingImpl& rounder, |
91 | | const PluralRules* rules, |
92 | | const DecimalQuantity& dq, |
93 | 0 | UErrorCode& status) { |
94 | | // TODO(ICU-20500): Avoid the copy? |
95 | 0 | DecimalQuantity copy(dq); |
96 | 0 | rounder.apply(copy, status); |
97 | 0 | if (U_FAILURE(status)) { |
98 | 0 | return StandardPlural::Form::OTHER; |
99 | 0 | } |
100 | 0 | return getStandardPlural(rules, copy); |
101 | 0 | } |
102 | | |
103 | | } // namespace utils |
104 | | |
105 | | } // namespace impl |
106 | | } // namespace number |
107 | | |
108 | | U_NAMESPACE_END |
109 | | |
110 | | #endif //__NUMBER_UTILS_H__ |
111 | | |
112 | | #endif /* #if !UCONFIG_NO_FORMATTING */ |