1 files changed, 117 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/number_asformat.cpp b/intl/icu/source/i18n/number_asformat.cpp
new file mode 100644
index 0000000000..8f2314d689
--- /dev/null
+++ b/intl/icu/source/i18n/number_asformat.cpp
@@ -0,0 +1,117 @@
+// © 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 <stdlib.h>
+#include <cmath>
+#include "number_asformat.h"
+#include "number_types.h"
+#include "number_utils.h"
+#include "fphdlimp.h"
+#include "number_utypes.h"
+
+using namespace icu;
+using namespace icu::number;
+using namespace icu::number::impl;
+
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(LocalizedNumberFormatterAsFormat)
+
+LocalizedNumberFormatterAsFormat::LocalizedNumberFormatterAsFormat(
+        const LocalizedNumberFormatter& formatter, const Locale& locale)
+        : fFormatter(formatter), fLocale(locale) {
+    const char* localeName = locale.getName();
+    setLocaleIDs(localeName, localeName);
+}
+
+LocalizedNumberFormatterAsFormat::~LocalizedNumberFormatterAsFormat() = default;
+
+bool LocalizedNumberFormatterAsFormat::operator==(const Format& other) const {
+    auto* _other = dynamic_cast<const LocalizedNumberFormatterAsFormat*>(&other);
+    if (_other == nullptr) {
+        return false;
+    }
+    // TODO: Change this to use LocalizedNumberFormatter::operator== if it is ever proposed.
+    // This implementation is fine, but not particularly efficient.
+    UErrorCode localStatus = U_ZERO_ERROR;
+    return fFormatter.toSkeleton(localStatus) == _other->fFormatter.toSkeleton(localStatus);
+}
+
+LocalizedNumberFormatterAsFormat* LocalizedNumberFormatterAsFormat::clone() const {
+    return new LocalizedNumberFormatterAsFormat(*this);
+}
+
+UnicodeString& LocalizedNumberFormatterAsFormat::format(const Formattable& obj, UnicodeString& appendTo,
+                                                        FieldPosition& pos, UErrorCode& status) const {
+    if (U_FAILURE(status)) { return appendTo; }
+    UFormattedNumberData data;
+    obj.populateDecimalQuantity(data.quantity, status);
+    if (U_FAILURE(status)) {
+        return appendTo;
+    }
+    fFormatter.formatImpl(&data, status);
+    if (U_FAILURE(status)) {
+        return appendTo;
+    }
+    // always return first occurrence:
+    pos.setBeginIndex(0);
+    pos.setEndIndex(0);
+    bool found = data.nextFieldPosition(pos, status);
+    if (found && appendTo.length() != 0) {
+        pos.setBeginIndex(pos.getBeginIndex() + appendTo.length());
+        pos.setEndIndex(pos.getEndIndex() + appendTo.length());
+    }
+    appendTo.append(data.toTempString(status));
+    return appendTo;
+}
+
+UnicodeString& LocalizedNumberFormatterAsFormat::format(const Formattable& obj, UnicodeString& appendTo,
+                                                        FieldPositionIterator* posIter,
+                                                        UErrorCode& status) const {
+    if (U_FAILURE(status)) { return appendTo; }
+    UFormattedNumberData data;
+    obj.populateDecimalQuantity(data.quantity, status);
+    if (U_FAILURE(status)) {
+        return appendTo;
+    }
+    fFormatter.formatImpl(&data, status);
+    if (U_FAILURE(status)) {
+        return appendTo;
+    }
+    appendTo.append(data.toTempString(status));
+    if (posIter != nullptr) {
+        FieldPositionIteratorHandler fpih(posIter, status);
+        data.getAllFieldPositions(fpih, status);
+    }
+    return appendTo;
+}
+
+void LocalizedNumberFormatterAsFormat::parseObject(const UnicodeString&, Formattable&,
+                                                   ParsePosition& parse_pos) const {
+    // Not supported.
+    parse_pos.setErrorIndex(0);
+}
+
+const LocalizedNumberFormatter& LocalizedNumberFormatterAsFormat::getNumberFormatter() const {
+    return fFormatter;
+}
+
+
+// Definitions of public API methods (put here for dependency disentanglement)
+
+Format* LocalizedNumberFormatter::toFormat(UErrorCode& status) const {
+    if (U_FAILURE(status)) {
+        return nullptr;
+    }
+    LocalPointer<LocalizedNumberFormatterAsFormat> retval(
+            new LocalizedNumberFormatterAsFormat(*this, fMacros.locale), status);
+    return retval.orphan();
+}
+
+#endif /* #if !UCONFIG_NO_FORMATTING */