Issue #1971 - Part 2: Update ICU source to 63.2.

intl/icu/source/i18n/number_multiplier.cpp

@@ -0,0 +1,156 @@
+// © 2018 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_FORMATTING
+
+// Allow implicit conversion from char16_t* to UnicodeString for this file:
+// Helpful in toString methods and elsewhere.
+#define UNISTR_FROM_STRING_EXPLICIT
+
+#include "number_decnum.h"
+#include "number_types.h"
+#include "number_multiplier.h"
+#include "numparse_validators.h"
+#include "number_utils.h"
+#include "decNumber.h"
+
+using namespace icu;
+using namespace icu::number;
+using namespace icu::number::impl;
+using namespace icu::numparse::impl;
+
+
+Scale::Scale(int32_t magnitude, DecNum* arbitraryToAdopt)
+        : fMagnitude(magnitude), fArbitrary(arbitraryToAdopt), fError(U_ZERO_ERROR) {
+    if (fArbitrary != nullptr) {
+        // Attempt to convert the DecNum to a magnitude multiplier.
+        fArbitrary->normalize();
+        if (fArbitrary->getRawDecNumber()->digits == 1 && fArbitrary->getRawDecNumber()->lsu[0] == 1 &&
+            !fArbitrary->isNegative()) {
+            // Success!
+            fMagnitude += fArbitrary->getRawDecNumber()->exponent;
+            delete fArbitrary;
+            fArbitrary = nullptr;
+        }
+    }
+}
+
+Scale::Scale(const Scale& other)
+        : fMagnitude(other.fMagnitude), fArbitrary(nullptr), fError(other.fError) {
+    if (other.fArbitrary != nullptr) {
+        UErrorCode localStatus = U_ZERO_ERROR;
+        fArbitrary = new DecNum(*other.fArbitrary, localStatus);
+    }
+}
+
+Scale& Scale::operator=(const Scale& other) {
+    fMagnitude = other.fMagnitude;
+    if (other.fArbitrary != nullptr) {
+        UErrorCode localStatus = U_ZERO_ERROR;
+        fArbitrary = new DecNum(*other.fArbitrary, localStatus);
+    } else {
+        fArbitrary = nullptr;
+    }
+    fError = other.fError;
+    return *this;
+}
+
+Scale::Scale(Scale&& src) U_NOEXCEPT
+        : fMagnitude(src.fMagnitude), fArbitrary(src.fArbitrary), fError(src.fError) {
+    // Take ownership away from src if necessary
+    src.fArbitrary = nullptr;
+}
+
+Scale& Scale::operator=(Scale&& src) U_NOEXCEPT {
+    fMagnitude = src.fMagnitude;
+    fArbitrary = src.fArbitrary;
+    fError = src.fError;
+    // Take ownership away from src if necessary
+    src.fArbitrary = nullptr;
+    return *this;
+}
+
+Scale::~Scale() {
+    delete fArbitrary;
+}
+
+
+Scale Scale::none() {
+    return {0, nullptr};
+}
+
+Scale Scale::powerOfTen(int32_t power) {
+    return {power, nullptr};
+}
+
+Scale Scale::byDecimal(StringPiece multiplicand) {
+    UErrorCode localError = U_ZERO_ERROR;
+    LocalPointer<DecNum> decnum(new DecNum(), localError);
+    if (U_FAILURE(localError)) {
+        return {localError};
+    }
+    decnum->setTo(multiplicand, localError);
+    if (U_FAILURE(localError)) {
+        return {localError};
+    }
+    return {0, decnum.orphan()};
+}
+
+Scale Scale::byDouble(double multiplicand) {
+    UErrorCode localError = U_ZERO_ERROR;
+    LocalPointer<DecNum> decnum(new DecNum(), localError);
+    if (U_FAILURE(localError)) {
+        return {localError};
+    }
+    decnum->setTo(multiplicand, localError);
+    if (U_FAILURE(localError)) {
+        return {localError};
+    }
+    return {0, decnum.orphan()};
+}
+
+Scale Scale::byDoubleAndPowerOfTen(double multiplicand, int32_t power) {
+    UErrorCode localError = U_ZERO_ERROR;
+    LocalPointer<DecNum> decnum(new DecNum(), localError);
+    if (U_FAILURE(localError)) {
+        return {localError};
+    }
+    decnum->setTo(multiplicand, localError);
+    if (U_FAILURE(localError)) {
+        return {localError};
+    }
+    return {power, decnum.orphan()};
+}
+
+void Scale::applyTo(impl::DecimalQuantity& quantity) const {
+    quantity.adjustMagnitude(fMagnitude);
+    if (fArbitrary != nullptr) {
+        UErrorCode localStatus = U_ZERO_ERROR;
+        quantity.multiplyBy(*fArbitrary, localStatus);
+    }
+}
+
+void Scale::applyReciprocalTo(impl::DecimalQuantity& quantity) const {
+    quantity.adjustMagnitude(-fMagnitude);
+    if (fArbitrary != nullptr) {
+        UErrorCode localStatus = U_ZERO_ERROR;
+        quantity.divideBy(*fArbitrary, localStatus);
+    }
+}
+
+
+void
+MultiplierFormatHandler::setAndChain(const Scale& multiplier, const MicroPropsGenerator* parent) {
+    fMultiplier = multiplier;
+    fParent = parent;
+}
+
+void MultiplierFormatHandler::processQuantity(DecimalQuantity& quantity, MicroProps& micros,
+                                              UErrorCode& status) const {
+    fParent->processQuantity(quantity, micros, status);
+    fMultiplier.applyTo(quantity);
+}
+
+#endif /* #if !UCONFIG_NO_FORMATTING */