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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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+// Copyright (C) 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+*******************************************************************************
+* Copyright (C) 2015, International Business Machines
+* Corporation and others. All Rights Reserved.
+*******************************************************************************
+* pluralaffix.h
+*
+* created on: 2015jan06
+* created by: Travis Keep
+*/
+
+#ifndef __PLURALAFFIX_H__
+#define __PLURALAFFIX_H__
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_FORMATTING
+
+#include "unicode/unum.h"
+#include "unicode/uobject.h"
+
+#include "digitaffix.h"
+#include "pluralmap.h"
+
+U_NAMESPACE_BEGIN
+
+class FieldPositionHandler;
+
+// Export an explicit template instantiation.
+//
+// MSVC requires this, even though it should not be necessary.
+// No direct access leaks out of the i18n library.
+//
+// Macintosh produces duplicate definition linker errors with the explicit template
+// instantiation.
+//
+#if !U_PLATFORM_IS_DARWIN_BASED
+template class U_I18N_API PluralMap<DigitAffix>;
+#endif
+
+
+/**
+ * A plural aware prefix or suffix of a formatted number.
+ *
+ * PluralAffix is essentially a map of DigitAffix objects keyed by plural
+ * category. The 'other' category is the default and always has some
+ * value. The rest of the categories are optional. Querying for a category that
+ * is not set always returns the DigitAffix stored in the 'other' category.
+ *
+ * To use one of these objects, build it up first using append() and
+ * setVariant() methods. Once built, leave unchanged and let multiple threads
+ * safely access.
+ *
+ * The following code is sample code for building up:
+ * one: US Dollar -
+ * other: US Dollars -
+ *
+ * and storing it in "negativeCurrencyPrefix"
+ *
+ * UErrorCode status = U_ZERO_ERROR;
+ *
+ * PluralAffix negativeCurrencyPrefix;
+ *
+ * PluralAffix currencyName;
+ * currencyName.setVariant("one", "US Dollar", status);
+ * currencyName.setVariant("other", "US Dollars", status);
+ *
+ * negativeCurrencyPrefix.append(currencyName, UNUM_CURRENCY_FIELD, status);
+ * negativeCurrencyPrefix.append(" ");
+ * negativeCurrencyPrefix.append("-", UNUM_SIGN_FIELD, status);
+ */
+class U_I18N_API PluralAffix : public UMemory {
+public:
+
+ /**
+ * Create empty PluralAffix.
+ */
+ PluralAffix() : affixes() { }
+
+ /**
+ * Create a PluralAffix where the 'other' variant is otherVariant.
+ */
+ PluralAffix(const DigitAffix &otherVariant) : affixes(otherVariant) { }
+
+ /**
+ * Sets a particular variant for a plural category while overwriting
+ * anything that may have been previously stored for that plural
+ * category. The set value has no field annotations.
+ * @param category "one", "two", "few", ...
+ * @param variant the variant to store under the particular category
+ * @param status Any error returned here.
+ */
+ UBool setVariant(
+ const char *category,
+ const UnicodeString &variant,
+ UErrorCode &status);
+ /**
+ * Make the 'other' variant be the empty string with no field annotations
+ * and remove the variants for the rest of the plural categories.
+ */
+ void remove();
+
+ /**
+ * Append value to all set plural categories. If fieldId present, value
+ * is that field type.
+ */
+ void appendUChar(UChar value, int32_t fieldId=UNUM_FIELD_COUNT);
+
+ /**
+ * Append value to all set plural categories. If fieldId present, value
+ * is that field type.
+ */
+ void append(const UnicodeString &value, int32_t fieldId=UNUM_FIELD_COUNT);
+
+ /**
+ * Append value to all set plural categories. If fieldId present, value
+ * is that field type.
+ */
+ void append(const UChar *value, int32_t charCount, int32_t fieldId=UNUM_FIELD_COUNT);
+
+ /**
+ * Append the value for each plural category in rhs to the corresponding
+ * plural category in this instance. Each value appended from rhs is
+ * of type fieldId.
+ */
+ UBool append(
+ const PluralAffix &rhs,
+ int32_t fieldId,
+ UErrorCode &status);
+ /**
+ * Get the DigitAffix for a paricular category such as "zero", "one", ...
+ * If the particular category is not set, returns the 'other' category
+ * which is always set.
+ */
+ const DigitAffix &getByCategory(const char *category) const;
+
+ /**
+ * Get the DigitAffix for a paricular category such as "zero", "one", ...
+ * If the particular category is not set, returns the 'other' category
+ * which is always set.
+ */
+ const DigitAffix &getByCategory(const UnicodeString &category) const;
+
+ /**
+ * Get the DigitAffix for the other category which is always set.
+ */
+ const DigitAffix &getOtherVariant() const {
+ return affixes.getOther();
+ }
+
+ /**
+ * Returns TRUE if this instance has variants stored besides the "other"
+ * variant.
+ */
+ UBool hasMultipleVariants() const;
+
+ /**
+ * Returns TRUE if this instance equals rhs.
+ */
+ UBool equals(const PluralAffix &rhs) const {
+ return affixes.equals(rhs.affixes, &eq);
+ }
+
+private:
+ PluralMap<DigitAffix> affixes;
+
+ static UBool eq(const DigitAffix &x, const DigitAffix &y) {
+ return x.equals(y);
+ }
+};
+
+
+U_NAMESPACE_END
+#endif /* #if !UCONFIG_NO_FORMATTING */
+#endif // __PLURALAFFIX_H__