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number_integerwidth.cpp (2456B)

      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 (U_FAILURE(status)) {
     44        return;
     45    }
     46    if (fHasError) {
     47        status = U_ILLEGAL_ARGUMENT_ERROR;
     48    } else if (fUnion.minMaxInt.fMaxInt == -1) {
     49        quantity.increaseMinIntegerTo(fUnion.minMaxInt.fMinInt);
     50    } else {
     51        // Enforce the backwards-compatibility feature "FormatFailIfMoreThanMaxDigits"
     52        if (fUnion.minMaxInt.fFormatFailIfMoreThanMaxDigits &&
     53            fUnion.minMaxInt.fMaxInt < quantity.getMagnitude()) {
     54            status = U_ILLEGAL_ARGUMENT_ERROR;
     55        }
     56        quantity.increaseMinIntegerTo(fUnion.minMaxInt.fMinInt);
     57        quantity.applyMaxInteger(fUnion.minMaxInt.fMaxInt);
     58    }
     59 }
     60 
     61 bool IntegerWidth::operator==(const IntegerWidth& other) const {
     62    // Private operator==; do error and bogus checking first!
     63    U_ASSERT(!fHasError);
     64    U_ASSERT(!other.fHasError);
     65    U_ASSERT(!isBogus());
     66    U_ASSERT(!other.isBogus());
     67    return fUnion.minMaxInt.fMinInt == other.fUnion.minMaxInt.fMinInt &&
     68           fUnion.minMaxInt.fMaxInt == other.fUnion.minMaxInt.fMaxInt;
     69 }
     70 
     71 #endif /* #if !UCONFIG_NO_FORMATTING */