Victor Chang | 7322950 | 2020-09-17 13:39:19 +0100 | [diff] [blame] | 1 | // © 2018 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 __NUMPARSE_DECIMAL_H__ |
| 8 | #define __NUMPARSE_DECIMAL_H__ |
| 9 | |
| 10 | #include "unicode/uniset.h" |
| 11 | #include "numparse_types.h" |
| 12 | |
| 13 | U_NAMESPACE_BEGIN namespace numparse { |
| 14 | namespace impl { |
| 15 | |
| 16 | using ::icu::number::impl::Grouper; |
| 17 | |
| 18 | class DecimalMatcher : public NumberParseMatcher, public UMemory { |
| 19 | public: |
| 20 | DecimalMatcher() = default; // WARNING: Leaves the object in an unusable state |
| 21 | |
| 22 | DecimalMatcher(const DecimalFormatSymbols& symbols, const Grouper& grouper, |
| 23 | parse_flags_t parseFlags); |
| 24 | |
| 25 | bool match(StringSegment& segment, ParsedNumber& result, UErrorCode& status) const override; |
| 26 | |
| 27 | bool |
| 28 | match(StringSegment& segment, ParsedNumber& result, int8_t exponentSign, UErrorCode& status) const; |
| 29 | |
| 30 | bool smokeTest(const StringSegment& segment) const override; |
| 31 | |
| 32 | UnicodeString toString() const override; |
| 33 | |
| 34 | private: |
| 35 | /** If true, only accept strings whose grouping sizes match the locale */ |
| 36 | bool requireGroupingMatch; |
| 37 | |
| 38 | /** If true, do not accept grouping separators at all */ |
| 39 | bool groupingDisabled; |
| 40 | |
| 41 | // Fraction grouping parsing is disabled for now but could be enabled later. |
| 42 | // See http://bugs.icu-project.org/trac/ticket/10794 |
| 43 | // bool fractionGrouping; |
| 44 | |
| 45 | /** If true, do not accept numbers in the fraction */ |
| 46 | bool integerOnly; |
| 47 | |
| 48 | int16_t grouping1; |
| 49 | int16_t grouping2; |
| 50 | |
| 51 | UnicodeString groupingSeparator; |
| 52 | UnicodeString decimalSeparator; |
| 53 | |
| 54 | // Assumption: these sets all consist of single code points. If this assumption needs to be broken, |
| 55 | // fix getLeadCodePoints() as well as matching logic. Be careful of the performance impact. |
| 56 | const UnicodeSet* groupingUniSet; |
| 57 | const UnicodeSet* decimalUniSet; |
| 58 | const UnicodeSet* separatorSet; |
| 59 | const UnicodeSet* leadSet; |
| 60 | |
| 61 | // Make this class the owner of a few objects that could be allocated. |
| 62 | // The first three LocalPointers are used for assigning ownership only. |
| 63 | LocalPointer<const UnicodeSet> fLocalDecimalUniSet; |
| 64 | LocalPointer<const UnicodeSet> fLocalSeparatorSet; |
| 65 | LocalArray<const UnicodeString> fLocalDigitStrings; |
| 66 | |
| 67 | bool validateGroup(int32_t sepType, int32_t count, bool isPrimary) const; |
| 68 | }; |
| 69 | |
| 70 | |
| 71 | } // namespace impl |
| 72 | } // namespace numparse |
| 73 | U_NAMESPACE_END |
| 74 | |
| 75 | #endif //__NUMPARSE_DECIMAL_H__ |
| 76 | #endif /* #if !UCONFIG_NO_FORMATTING */ |