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Unified Diff: source/i18n/quantityformatter.h

Issue 845603002: Update ICU to 54.1 step 1 (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/icu.git@master
Patch Set: remove unusued directories Created 5 years, 11 months ago
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Index: source/i18n/quantityformatter.h
diff --git a/source/i18n/quantityformatter.h b/source/i18n/quantityformatter.h
new file mode 100644
index 0000000000000000000000000000000000000000..4e19085964e9a44a519e404f3eb00addc3b94db3
--- /dev/null
+++ b/source/i18n/quantityformatter.h
@@ -0,0 +1,119 @@
+/*
+******************************************************************************
+* Copyright (C) 2014, International Business Machines
+* Corporation and others. All Rights Reserved.
+******************************************************************************
+* quantityformatter.h
+*/
+
+#ifndef __QUANTITY_FORMATTER_H__
+#define __QUANTITY_FORMATTER_H__
+
+#include "unicode/utypes.h"
+#include "unicode/uobject.h"
+
+#if !UCONFIG_NO_FORMATTING
+
+U_NAMESPACE_BEGIN
+
+class SimplePatternFormatter;
+class UnicodeString;
+class PluralRules;
+class NumberFormat;
+class Formattable;
+class FieldPosition;
+
+/**
+ * A plural aware formatter that is good for expressing a single quantity and
+ * a unit.
+ * <p>
+ * First use the add() methods to add a pattern for each plural variant.
+ * There must be a pattern for the "other" variant.
+ * Then use the format() method.
+ * <p>
+ * Concurrent calls only to const methods on a QuantityFormatter object are
+ * safe, but concurrent const and non-const method calls on a QuantityFormatter
+ * object are not safe and require synchronization.
+ *
+ */
+class U_I18N_API QuantityFormatter : public UMemory {
+public:
+ /**
+ * Default constructor.
+ */
+ QuantityFormatter();
+
+ /**
+ * Copy constructor.
+ */
+ QuantityFormatter(const QuantityFormatter& other);
+
+ /**
+ * Assignment operator
+ */
+ QuantityFormatter &operator=(const QuantityFormatter& other);
+
+ /**
+ * Destructor.
+ */
+ ~QuantityFormatter();
+
+ /**
+ * Removes all variants from this object including the "other" variant.
+ */
+ void reset();
+
+ /**
+ * Adds a plural variant.
+ *
+ * @param variant "zero", "one", "two", "few", "many", "other"
+ * @param rawPattern the pattern for the variant e.g "{0} meters"
+ * @param status any error returned here.
+ * @return TRUE on success; FALSE if status was set to a non zero error.
+ */
+ UBool add(
+ const char *variant,
+ const UnicodeString &rawPattern,
+ UErrorCode &status);
+
+ /**
+ * returns TRUE if this object has at least the "other" variant.
+ */
+ UBool isValid() const;
+
+ /**
+ * Gets the pattern formatter that would be used for a particular variant.
+ * If isValid() returns TRUE, this method is guaranteed to return a
+ * non-NULL value.
+ */
+ const SimplePatternFormatter *getByVariant(const char *variant) const;
+
+ /**
+ * Formats a quantity with this object appending the result to appendTo.
+ * At least the "other" variant must be added to this object for this
+ * method to work.
+ *
+ * @param quantity the single quantity.
+ * @param fmt formats the quantity
+ * @param rules computes the plural variant to use.
+ * @param appendTo result appended here.
+ * @param status any error returned here.
+ * @return appendTo
+ */
+ UnicodeString &format(
+ const Formattable &quantity,
+ const NumberFormat &fmt,
+ const PluralRules &rules,
+ UnicodeString &appendTo,
+ FieldPosition &pos,
+ UErrorCode &status) const;
+
+private:
+ SimplePatternFormatter *formatters[6];
+};
+
+U_NAMESPACE_END
+
+#endif
+
+#endif
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