X-Git-Url: https://git.saurik.com/apple/icu.git/blobdiff_plain/b331163bffd790ced0e88b73f44f86d49ccc48a5..38fbf2fd31f5cd99b500914d6037b1d06b608645:/icuSources/i18n/unicode/rbnf.h

diff --git a/icuSources/i18n/unicode/rbnf.h b/icuSources/i18n/unicode/rbnf.h
index 7058c967..5f9510f3 100644
--- a/icuSources/i18n/unicode/rbnf.h
+++ b/icuSources/i18n/unicode/rbnf.h
@@ -1,3 +1,5 @@
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
 /*
 *******************************************************************************
 * Copyright (C) 1997-2015, International Business Machines Corporation and others.
@@ -36,8 +38,10 @@
 #include "unicode/brkiter.h"
 #include "unicode/upluralrules.h"
 
+#if U_SHOW_CPLUSPLUS_API
 U_NAMESPACE_BEGIN
 
+class NFRule;
 class NFRuleSet;
 class LocalizationInfo;
 class PluralFormat;
@@ -53,7 +57,13 @@ enum URBNFRuleSetTag {
     URBNF_ORDINAL,
     URBNF_DURATION,
     URBNF_NUMBERING_SYSTEM,
+#ifndef U_HIDE_DEPRECATED_API
+    /**
+     * One more than the highest normal URBNFRuleSetTag value.
+     * @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
+     */
     URBNF_COUNT
+#endif  // U_HIDE_DEPRECATED_API
 };
 
 /**
@@ -264,17 +274,47 @@ enum URBNFRuleSetTag {
  *   </tr>
  *   <tr>
  *     <td>x.x:</td>
- *     <td>The rule is an <em>improper fraction rule.</em></td>
+ *     <td>The rule is an <em>improper fraction rule</em>. If the full stop in
+ *     the middle of the rule name is replaced with the decimal point
+ *     that is used in the language or DecimalFormatSymbols, then that rule will
+ *     have precedence when formatting and parsing this rule. For example, some
+ *     languages use the comma, and can thus be written as x,x instead. For example,
+ *     you can use "x.x: &lt;&lt; point &gt;&gt;;x,x: &lt;&lt; comma &gt;&gt;;" to
+ *     handle the decimal point that matches the language's natural spelling of
+ *     the punctuation of either the full stop or comma.</td>
  *   </tr>
  *   <tr>
  *     <td>0.x:</td>
- *     <td>The rule is a <em>proper fraction rule.</em></td>
+ *     <td>The rule is a <em>proper fraction rule</em>. If the full stop in
+ *     the middle of the rule name is replaced with the decimal point
+ *     that is used in the language or DecimalFormatSymbols, then that rule will
+ *     have precedence when formatting and parsing this rule. For example, some
+ *     languages use the comma, and can thus be written as 0,x instead. For example,
+ *     you can use "0.x: point &gt;&gt;;0,x: comma &gt;&gt;;" to
+ *     handle the decimal point that matches the language's natural spelling of
+ *     the punctuation of either the full stop or comma.</td>
  *   </tr>
  *   <tr>
  *     <td>x.0:</td>
- *     <td>The rule is a <em>master rule.</em></td>
+ *     <td>The rule is a <em>master rule</em>. If the full stop in
+ *     the middle of the rule name is replaced with the decimal point
+ *     that is used in the language or DecimalFormatSymbols, then that rule will
+ *     have precedence when formatting and parsing this rule. For example, some
+ *     languages use the comma, and can thus be written as x,0 instead. For example,
+ *     you can use "x.0: &lt;&lt; point;x,0: &lt;&lt; comma;" to
+ *     handle the decimal point that matches the language's natural spelling of
+ *     the punctuation of either the full stop or comma.</td>
+ *   </tr>
+ *   <tr>
+ *     <td>Inf:</td>
+ *     <td>The rule for infinity.</td>
  *   </tr>
  *   <tr>
+ *     <td>NaN:</td>
+ *     <td>The rule for an IEEE 754 NaN (not a number).</td>
+ *   </tr>
+ *   <tr>
+ *   <tr>
  *     <td><em>nothing</em></td>
  *     <td>If the rule's rule descriptor is left out, the base value is one plus the
  *     preceding rule's base value (or zero if this is the first rule in the list) in a normal
@@ -827,6 +867,52 @@ public:
                                 FieldPosition& pos,
                                 UErrorCode& status) const;
 
+protected:
+    /**
+     * Format a decimal number.
+     * The number is a DigitList wrapper onto a floating point decimal number.
+     * The default implementation in NumberFormat converts the decimal number
+     * to a double and formats that.  Subclasses of NumberFormat that want
+     * to specifically handle big decimal numbers must override this method.
+     * class DecimalFormat does so.
+     *
+     * @param number    The number, a DigitList format Decimal Floating Point.
+     * @param appendTo  Output parameter to receive result.
+     *                  Result is appended to existing contents.
+     * @param posIter   On return, can be used to iterate over positions
+     *                  of fields generated by this format call.
+     * @param status    Output param filled with success/failure status.
+     * @return          Reference to 'appendTo' parameter.
+     * @internal
+     */
+    virtual UnicodeString& format(const DigitList &number,
+                                  UnicodeString& appendTo,
+                                  FieldPositionIterator* posIter,
+                                  UErrorCode& status) const;
+
+    /**
+     * Format a decimal number.
+     * The number is a DigitList wrapper onto a floating point decimal number.
+     * The default implementation in NumberFormat converts the decimal number
+     * to a double and formats that.  Subclasses of NumberFormat that want
+     * to specifically handle big decimal numbers must override this method.
+     * class DecimalFormat does so.
+     *
+     * @param number    The number, a DigitList format Decimal Floating Point.
+     * @param appendTo  Output parameter to receive result.
+     *                  Result is appended to existing contents.
+     * @param pos       On input: an alignment field, if desired.
+     *                  On output: the offsets of the alignment field.
+     * @param status    Output param filled with success/failure status.
+     * @return          Reference to 'appendTo' parameter.
+     * @internal
+     */
+    virtual UnicodeString& format(const DigitList &number,
+                                  UnicodeString& appendTo,
+                                  FieldPosition& pos,
+                                  UErrorCode& status) const;
+public:
+
   using NumberFormat::parse;
 
   /**
@@ -980,13 +1066,20 @@ private:
     /* friend access */
     friend class NFSubstitution;
     friend class NFRule;
+    friend class NFRuleSet;
     friend class FractionalPartSubstitution;
 
     inline NFRuleSet * getDefaultRuleSet() const;
     const RuleBasedCollator * getCollator() const;
-    DecimalFormatSymbols * getDecimalFormatSymbols() const;
+    DecimalFormatSymbols * initializeDecimalFormatSymbols(UErrorCode &status);
+    const DecimalFormatSymbols * getDecimalFormatSymbols() const;
+    NFRule * initializeDefaultInfinityRule(UErrorCode &status);
+    const NFRule * getDefaultInfinityRule() const;
+    NFRule * initializeDefaultNaNRule(UErrorCode &status);
+    const NFRule * getDefaultNaNRule() const;
     PluralFormat *createPluralFormat(UPluralType pluralType, const UnicodeString &pattern, UErrorCode& status) const;
-    UnicodeString& adjustForCapitalizationContext(int32_t startPos, UnicodeString& currentResult) const;
+    UnicodeString& adjustForCapitalizationContext(int32_t startPos, UnicodeString& currentResult, UErrorCode& status) const;
+    UnicodeString& format(int64_t number, NFRuleSet *ruleSet, UnicodeString& toAppendTo, UErrorCode& status) const;
 
 private:
     NFRuleSet **ruleSets;
@@ -996,6 +1089,8 @@ private:
     Locale locale;
     RuleBasedCollator* collator;
     DecimalFormatSymbols* decimalFormatSymbols;
+    NFRule *defaultInfinityRule;
+    NFRule *defaultNaNRule;
     UBool lenient;
     UnicodeString* lenientParseRules;
     LocalizationInfo* localizations;
@@ -1023,6 +1118,7 @@ RuleBasedNumberFormat::getDefaultRuleSet() const {
 }
 
 U_NAMESPACE_END
+#endif // U_SHOW_CPLUSPLUS_API
 
 /* U_HAVE_RBNF */
 #endif