numparse_decimal.h (2492B)
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 14 namespace numparse::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 https://unicode-org.atlassian.net/browse/ICU-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> fLocalGroupingUniSet; 65 LocalPointer<const UnicodeSet> fLocalSeparatorSet; 66 LocalArray<const UnicodeString> fLocalDigitStrings; 67 68 bool validateGroup(int32_t sepType, int32_t count, bool isPrimary) const; 69 }; 70 71 } // namespace numparse::impl 72 U_NAMESPACE_END 73 74 #endif //__NUMPARSE_DECIMAL_H__ 75 #endif /* #if !UCONFIG_NO_FORMATTING */