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     char nsName[9];
  36
  37     // Note: This struct has no direct ownership of the following pointers.
  38     const DecimalFormatSymbols* symbols;
  39     const Modifier* modOuter;
  40     const Modifier* modMiddle;
  41     const Modifier* modInner;
  42
  43     // The following "helper" fields may optionally be used during the MicroPropsGenerator.
  44     // They live here to retain memory.
  45     struct {
  46         ScientificModifier scientificModifier;
  47         EmptyModifier emptyWeakModifier{false};
  48         EmptyModifier emptyStrongModifier{true};
  49         MultiplierFormatHandler multiplier;
  50     } helpers;
  51
  52
  53     MicroProps() = default;
  54
  55     MicroProps(const MicroProps& other) = default;
  56
  57     MicroProps& operator=(const MicroProps& other) = default;
  58
  59     void processQuantity(DecimalQuantity&, MicroProps& micros, UErrorCode& status) const U_OVERRIDE {
  60         (void) status;
  61         if (this == &micros) {
  62             // Unsafe path: no need to perform a copy.
  63             U_ASSERT(!exhausted);
  64             micros.exhausted = true;
  65             U_ASSERT(exhausted);
  66         } else {
  67             // Safe path: copy self into the output micros.
  68             micros = *this;
  69         }
  70     }
  71
  72   private:
  73     // Internal fields:
  74     bool exhausted = false;
  75 };
  76
  77 } // namespace impl
  78 } // namespace number
  79 U_NAMESPACE_END
  80
  81 #endif // __NUMBER_MICROPROPS_H__
  82
  83 #endif /* #if !UCONFIG_NO_FORMATTING */