icuSources/i18n/numparse_impl.h

   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_IMPL_H__
   8 #define __NUMPARSE_IMPL_H__
   9
  10 #include "numparse_types.h"
  11 #include "numparse_decimal.h"
  12 #include "numparse_symbols.h"
  13 #include "numparse_scientific.h"
  14 #include "unicode/uniset.h"
  15 #include "numparse_currency.h"
  16 #include "numparse_affixes.h"
  17 #include "number_decimfmtprops.h"
  18 #include "unicode/localpointer.h"
  19 #include "numparse_validators.h"
  20 #include "number_multiplier.h"
  21
  22 U_NAMESPACE_BEGIN
  23
  24 // Export an explicit template instantiation of the MaybeStackArray that is used as a data member of NumberParserImpl.
  25 // When building DLLs for Windows this is required even though no direct access to the MaybeStackArray leaks out of the i18n library.
  26 // (See numparse_compositions.h, numparse_affixes.h, datefmt.h, and others for similar examples.)
  27 #if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
  28 template class U_I18N_API MaybeStackArray<const numparse::impl::NumberParseMatcher*, 10>;
  29 #endif
  30
  31 namespace numparse {
  32 namespace impl {
  33
  34 // Exported as U_I18N_API for tests
  35 class U_I18N_API NumberParserImpl : public MutableMatcherCollection, public UMemory {
  36   public:
  37     virtual ~NumberParserImpl();
  38
  39     static NumberParserImpl* createSimpleParser(const Locale& locale, const UnicodeString& patternString,
  40                                                 parse_flags_t parseFlags, UErrorCode& status);
  41
  42     static NumberParserImpl* createParserFromProperties(
  43             const number::impl::DecimalFormatProperties& properties, const DecimalFormatSymbols& symbols,
  44             bool parseCurrency, UErrorCode& status);
  45
  46     /**
  47      * Does NOT take ownership of the matcher. The matcher MUST remain valid for the lifespan of the
  48      * NumberParserImpl.
  49      * @param matcher The matcher to reference.
  50      */
  51     void addMatcher(NumberParseMatcher& matcher) override;
  52
  53     void freeze();
  54
  55     parse_flags_t getParseFlags() const;
  56
  57     void parse(const UnicodeString& input, bool greedy, ParsedNumber& result, UErrorCode& status) const;
  58
  59     void parse(const UnicodeString& input, int32_t start, bool greedy, ParsedNumber& result,
  60                UErrorCode& status) const;
  61
  62     UnicodeString toString() const;
  63
  64   private:
  65     parse_flags_t fParseFlags;
  66     int32_t fNumMatchers = 0;
  67     // NOTE: The stack capacity for fMatchers and fLeads should be the same
  68     MaybeStackArray<const NumberParseMatcher*, 10> fMatchers;
  69     bool fFrozen = false;
  70
  71     // WARNING: All of these matchers start in an undefined state (default-constructed).
  72     // You must use an assignment operator on them before using.
  73     struct {
  74         IgnorablesMatcher ignorables;
  75         InfinityMatcher infinity;
  76         MinusSignMatcher minusSign;
  77         NanMatcher nan;
  78         PaddingMatcher padding;
  79         PercentMatcher percent;
  80         PermilleMatcher permille;
  81         PlusSignMatcher plusSign;
  82         DecimalMatcher decimal;
  83         ScientificMatcher scientific;
  84         CombinedCurrencyMatcher currency;
  85         AffixMatcherWarehouse affixMatcherWarehouse;
  86         AffixTokenMatcherWarehouse affixTokenMatcherWarehouse;
  87     } fLocalMatchers;
  88     struct {
  89         RequireAffixValidator affix;
  90         RequireCurrencyValidator currency;
  91         RequireDecimalSeparatorValidator decimalSeparator;
  92         RequireNumberValidator number;
  93         MultiplierParseHandler multiplier;
  94     } fLocalValidators;
  95
  96     explicit NumberParserImpl(parse_flags_t parseFlags);
  97
  98     void parseGreedy(StringSegment& segment, ParsedNumber& result, UErrorCode& status) const;
  99
 100     void parseLongestRecursive(
 101         StringSegment& segment, ParsedNumber& result, int32_t recursionLevels, UErrorCode& status) const;
 102 };
 103
 104
 105 } // namespace impl
 106 } // namespace numparse
 107 U_NAMESPACE_END
 108
 109 #endif //__NUMPARSE_IMPL_H__
 110 #endif /* #if !UCONFIG_NO_FORMATTING */