1 files changed, 57 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/number_multiplier.h b/intl/icu/source/i18n/number_multiplier.h
new file mode 100644
index 0000000000..c752935b78
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+++ b/intl/icu/source/i18n/number_multiplier.h
@@ -0,0 +1,57 @@
+// © 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
+#ifndef __SOURCE_NUMBER_MULTIPLIER_H__
+#define __SOURCE_NUMBER_MULTIPLIER_H__
+
+#include "numparse_types.h"
+#include "number_decimfmtprops.h"
+
+U_NAMESPACE_BEGIN namespace number {
+namespace impl {
+
+
+/**
+ * Wraps a {@link Multiplier} for use in the number formatting pipeline.
+ */
+// Exported as U_I18N_API for tests
+class U_I18N_API MultiplierFormatHandler : public MicroPropsGenerator, public UMemory {
+  public:
+    MultiplierFormatHandler() = default; // WARNING: Leaves object in an unusable state; call setAndChain()
+
+    void setAndChain(const Scale& multiplier, const MicroPropsGenerator* parent);
+
+    void processQuantity(DecimalQuantity& quantity, MicroProps& micros,
+                         UErrorCode& status) const override;
+
+  private:
+    Scale fMultiplier;
+    const MicroPropsGenerator *fParent;
+};
+
+
+/** Gets a Scale from a DecimalFormatProperties. In Java, defined in RoundingUtils.java */
+static inline Scale scaleFromProperties(const DecimalFormatProperties& properties) {
+    int32_t magnitudeMultiplier = properties.magnitudeMultiplier + properties.multiplierScale;
+    int32_t arbitraryMultiplier = properties.multiplier;
+    if (magnitudeMultiplier != 0 && arbitraryMultiplier != 1) {
+        return Scale::byDoubleAndPowerOfTen(arbitraryMultiplier, magnitudeMultiplier);
+    } else if (magnitudeMultiplier != 0) {
+        return Scale::powerOfTen(magnitudeMultiplier);
+    } else if (arbitraryMultiplier != 1) {
+        return Scale::byDouble(arbitraryMultiplier);
+    } else {
+        return Scale::none();
+    }
+}
+
+
+} // namespace impl
+} // namespace number
+U_NAMESPACE_END
+
+#endif //__SOURCE_NUMBER_MULTIPLIER_H__
+#endif /* #if !UCONFIG_NO_FORMATTING */