icuSources/i18n/number_microprops.h

   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_MICROPROPS_H__
   8 #define __NUMBER_MICROPROPS_H__
   9
  10 // TODO: minimize includes
  11 #include "unicode/numberformatter.h"
  12 #include "number_types.h"
  13 #include "number_decimalquantity.h"
  14 #include "number_scientific.h"
  15 #include "number_patternstring.h"
  16 #include "number_modifiers.h"
  17 #include "number_multiplier.h"
  18 #include "number_roundingutils.h"
  19 #include "decNumber.h"
  20 #include "charstr.h"
  21
  22 U_NAMESPACE_BEGIN namespace number {
  23 namespace impl {
  24
  25 struct MicroProps : public MicroPropsGenerator {
  26
  27     // NOTE: All of these fields are properly initialized in NumberFormatterImpl.
  28     RoundingImpl rounder;
  29     Grouper grouping;
  30     Padder padding;
  31     IntegerWidth integerWidth;
  32     UNumberSignDisplay sign;
  33     UNumberDecimalSeparatorDisplay decimal;
  34     bool useCurrency;
  35
  36     // Note: This struct has no direct ownership of the following pointers.
  37     const DecimalFormatSymbols* symbols;
  38     const Modifier* modOuter;
  39     const Modifier* modMiddle;
  40     const Modifier* modInner;
  41
  42     // The following "helper" fields may optionally be used during the MicroPropsGenerator.
  43     // They live here to retain memory.
  44     struct {
  45         ScientificModifier scientificModifier;
  46         EmptyModifier emptyWeakModifier{false};
  47         EmptyModifier emptyStrongModifier{true};
  48         MultiplierFormatHandler multiplier;
  49     } helpers;
  50
  51
  52     MicroProps() = default;
  53
  54     MicroProps(const MicroProps& other) = default;
  55
  56     MicroProps& operator=(const MicroProps& other) = default;
  57
  58     void processQuantity(DecimalQuantity&, MicroProps& micros, UErrorCode& status) const U_OVERRIDE {
  59         (void) status;
  60         if (this == &micros) {
  61             // Unsafe path: no need to perform a copy.
  62             U_ASSERT(!exhausted);
  63             micros.exhausted = true;
  64             U_ASSERT(exhausted);
  65         } else {
  66             // Safe path: copy self into the output micros.
  67             micros = *this;
  68         }
  69     }
  70
  71   private:
  72     // Internal fields:
  73     bool exhausted = false;
  74 };
  75
  76 } // namespace impl
  77 } // namespace number
  78 U_NAMESPACE_END
  79
  80 #endif // __NUMBER_MICROPROPS_H__
  81
  82 #endif /* #if !UCONFIG_NO_FORMATTING */