| // © 2018 and later: Unicode, Inc. and others. |
| // License & terms of use: http://www.unicode.org/copyright.html |
| |
| #include "unicode/utypes.h" |
| |
| #if !UCONFIG_NO_FORMATTING |
| #ifndef __SOURCE_NUMPARSE_COMPOSITIONS__ |
| #define __SOURCE_NUMPARSE_COMPOSITIONS__ |
| |
| #include "numparse_types.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| // Export an explicit template instantiation of the MaybeStackArray that is used as a data member of ArraySeriesMatcher. |
| // When building DLLs for Windows this is required even though no direct access to the MaybeStackArray leaks out of the i18n library. |
| // (See digitlst.h, pluralaffix.h, datefmt.h, and others for similar examples.) |
| #if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN |
| template class U_I18N_API MaybeStackArray<const numparse::impl::NumberParseMatcher*, 3>; |
| #endif |
| |
| namespace numparse { |
| namespace impl { |
| |
| /** |
| * Base class for AnyMatcher and SeriesMatcher. |
| */ |
| // Exported as U_I18N_API for tests |
| class U_I18N_API CompositionMatcher : public NumberParseMatcher { |
| protected: |
| // No construction except by subclasses! |
| CompositionMatcher() = default; |
| |
| // To be overridden by subclasses (used for iteration): |
| virtual const NumberParseMatcher* const* begin() const = 0; |
| |
| // To be overridden by subclasses (used for iteration): |
| virtual const NumberParseMatcher* const* end() const = 0; |
| }; |
| |
| |
| // NOTE: AnyMatcher is no longer being used. The previous definition is shown below. |
| // The implementation can be found in SVN source control, deleted around March 30, 2018. |
| ///** |
| // * Composes a number of matchers, and succeeds if any of the matchers succeed. Always greedily chooses |
| // * the first matcher in the list to succeed. |
| // * |
| // * NOTE: In C++, this is a base class, unlike ICU4J, which uses a factory-style interface. |
| // * |
| // * @author sffc |
| // * @see SeriesMatcher |
| // */ |
| //class AnyMatcher : public CompositionMatcher { |
| // public: |
| // bool match(StringSegment& segment, ParsedNumber& result, UErrorCode& status) const override; |
| // |
| // bool smokeTest(const StringSegment& segment) const override; |
| // |
| // void postProcess(ParsedNumber& result) const override; |
| // |
| // protected: |
| // // No construction except by subclasses! |
| // AnyMatcher() = default; |
| //}; |
| |
| |
| /** |
| * Composes a number of matchers, running one after another. Matches the input string only if all of the |
| * matchers in the series succeed. Performs greedy matches within the context of the series. |
| * |
| * @author sffc |
| * @see AnyMatcher |
| */ |
| // Exported as U_I18N_API for tests |
| class U_I18N_API SeriesMatcher : public CompositionMatcher { |
| public: |
| bool match(StringSegment& segment, ParsedNumber& result, UErrorCode& status) const override; |
| |
| bool smokeTest(const StringSegment& segment) const override; |
| |
| void postProcess(ParsedNumber& result) const override; |
| |
| virtual int32_t length() const = 0; |
| |
| protected: |
| // No construction except by subclasses! |
| SeriesMatcher() = default; |
| }; |
| |
| /** |
| * An implementation of SeriesMatcher that references an array of matchers. |
| * |
| * The object adopts the array, but NOT the matchers contained inside the array. |
| */ |
| // Exported as U_I18N_API for tests |
| class U_I18N_API ArraySeriesMatcher : public SeriesMatcher { |
| public: |
| ArraySeriesMatcher(); // WARNING: Leaves the object in an unusable state |
| |
| typedef MaybeStackArray<const NumberParseMatcher*, 3> MatcherArray; |
| |
| /** The array is std::move'd */ |
| ArraySeriesMatcher(MatcherArray& matchers, int32_t matchersLen); |
| |
| UnicodeString toString() const override; |
| |
| int32_t length() const override; |
| |
| protected: |
| const NumberParseMatcher* const* begin() const override; |
| |
| const NumberParseMatcher* const* end() const override; |
| |
| private: |
| MatcherArray fMatchers; |
| int32_t fMatchersLen; |
| }; |
| |
| |
| } // namespace impl |
| } // namespace numparse |
| U_NAMESPACE_END |
| |
| #endif //__SOURCE_NUMPARSE_COMPOSITIONS__ |
| #endif /* #if !UCONFIG_NO_FORMATTING */ |