icuSources/i18n/number_integerwidth.cpp

   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
   8 #include "unicode/numberformatter.h"
   9 #include "number_types.h"
  10 #include "number_decimalquantity.h"
  11
  12 using namespace icu;
  13 using namespace icu::number;
  14 using namespace icu::number::impl;
  15
  16 IntegerWidth::IntegerWidth(digits_t minInt, digits_t maxInt, bool formatFailIfMoreThanMaxDigits) {
  17     fUnion.minMaxInt.fMinInt = minInt;
  18     fUnion.minMaxInt.fMaxInt = maxInt;
  19     fUnion.minMaxInt.fFormatFailIfMoreThanMaxDigits = formatFailIfMoreThanMaxDigits;
  20 }
  21
  22 IntegerWidth IntegerWidth::zeroFillTo(int32_t minInt) {
  23     if (minInt >= 0 && minInt <= kMaxIntFracSig) {
  24         return {static_cast<digits_t>(minInt), -1, false};
  25     } else {
  26         return {U_NUMBER_ARG_OUTOFBOUNDS_ERROR};
  27     }
  28 }
  29
  30 IntegerWidth IntegerWidth::truncateAt(int32_t maxInt) {
  31     if (fHasError) { return *this; }  // No-op on error
  32     digits_t minInt = fUnion.minMaxInt.fMinInt;
  33     if (maxInt >= 0 && maxInt <= kMaxIntFracSig && minInt <= maxInt) {
  34         return {minInt, static_cast<digits_t>(maxInt), false};
  35     } else if (maxInt == -1) {
  36         return {minInt, -1, false};
  37     } else {
  38         return {U_NUMBER_ARG_OUTOFBOUNDS_ERROR};
  39     }
  40 }
  41
  42 void IntegerWidth::apply(impl::DecimalQuantity& quantity, UErrorCode& status) const {
  43     if (fHasError) {
  44         status = U_ILLEGAL_ARGUMENT_ERROR;
  45     } else if (fUnion.minMaxInt.fMaxInt == -1) {
  46         quantity.setMinInteger(fUnion.minMaxInt.fMinInt);
  47     } else {
  48         // Enforce the backwards-compatibility feature "FormatFailIfMoreThanMaxDigits"
  49         if (fUnion.minMaxInt.fFormatFailIfMoreThanMaxDigits &&
  50             fUnion.minMaxInt.fMaxInt < quantity.getMagnitude()) {
  51             status = U_ILLEGAL_ARGUMENT_ERROR;
  52         }
  53         quantity.setMinInteger(fUnion.minMaxInt.fMinInt);
  54         quantity.applyMaxInteger(fUnion.minMaxInt.fMaxInt);
  55     }
  56 }
  57
  58 bool IntegerWidth::operator==(const IntegerWidth& other) const {
  59     // Private operator==; do error and bogus checking first!
  60     U_ASSERT(!fHasError);
  61     U_ASSERT(!other.fHasError);
  62     U_ASSERT(!isBogus());
  63     U_ASSERT(!other.isBogus());
  64     return fUnion.minMaxInt.fMinInt == other.fUnion.minMaxInt.fMinInt &&
  65            fUnion.minMaxInt.fMaxInt == other.fUnion.minMaxInt.fMaxInt;
  66 }
  67
  68 #endif /* #if !UCONFIG_NO_FORMATTING */