summaryrefslogtreecommitdiff
path: root/Build/source/libs/icu/icu-xetex/i18n/unicode/choicfmt.h
diff options
context:
space:
mode:
Diffstat (limited to 'Build/source/libs/icu/icu-xetex/i18n/unicode/choicfmt.h')
-rw-r--r--Build/source/libs/icu/icu-xetex/i18n/unicode/choicfmt.h780
1 files changed, 780 insertions, 0 deletions
diff --git a/Build/source/libs/icu/icu-xetex/i18n/unicode/choicfmt.h b/Build/source/libs/icu/icu-xetex/i18n/unicode/choicfmt.h
new file mode 100644
index 00000000000..409966a4c8f
--- /dev/null
+++ b/Build/source/libs/icu/icu-xetex/i18n/unicode/choicfmt.h
@@ -0,0 +1,780 @@
+/*
+********************************************************************************
+* Copyright (C) 1997-2005, International Business Machines
+* Corporation and others. All Rights Reserved.
+********************************************************************************
+*
+* File CHOICFMT.H
+*
+* Modification History:
+*
+* Date Name Description
+* 02/19/97 aliu Converted from java.
+* 03/20/97 helena Finished first cut of implementation and got rid
+* of nextDouble/previousDouble and replaced with
+* boolean array.
+* 4/10/97 aliu Clean up. Modified to work on AIX.
+* 8/6/97 nos Removed overloaded constructor, member var 'buffer'.
+* 07/22/98 stephen Removed operator!= (implemented in Format)
+********************************************************************************
+*/
+
+#ifndef CHOICFMT_H
+#define CHOICFMT_H
+
+#include "unicode/utypes.h"
+
+/**
+ * \file
+ * \brief C++ API: Choice Format.
+ */
+
+#if !UCONFIG_NO_FORMATTING
+
+#include "unicode/unistr.h"
+#include "unicode/numfmt.h"
+#include "unicode/fieldpos.h"
+#include "unicode/format.h"
+
+U_NAMESPACE_BEGIN
+
+class MessageFormat;
+
+/**
+ * ChoiceFormat converts between ranges of numeric values
+ * and string names for those ranges. A <code>ChoiceFormat</code> splits
+ * the real number line <code>-Inf</code> to <code>+Inf</code> into two
+ * or more contiguous ranges. Each range is mapped to a
+ * string. <code>ChoiceFormat</code> is generally used in a
+ * <code>MessageFormat</code> for displaying grammatically correct
+ * plurals such as &quot;There are 2 files.&quot;</p>
+ *
+ * <p>There are two methods of defining a <code>ChoiceFormat</code>; both
+ * are equivalent. The first is by using a string pattern. This is the
+ * preferred method in most cases. The second method is through direct
+ * specification of the arrays that make up the
+ * <code>ChoiceFormat</code>.</p>
+ *
+ * <p><strong>Patterns</strong></p>
+ *
+ * <p>In most cases, the preferred way to define a
+ * <code>ChoiceFormat</code> is with a pattern. Here is an example of a
+ * <code>ChoiceFormat</code> pattern:</p>
+ *
+ * \htmlonly<pre> 0&#x2264;are no files|1&#x2264;is one file|1&lt;are many files</pre>\endhtmlonly
+ *
+ * <p>or equivalently,</p>
+ *
+ * \htmlonly<pre> 0#are no files|1#is one file|1&lt;are many files</pre>\endhtmlonly
+ *
+ * <p>The pattern consists of a number or <em>range specifiers</em>
+ * separated by vertical bars '|' (U+007C). There is no
+ * vertical bar after the last range. Each range specifier is of the
+ * form:</p>
+ *
+ * \htmlonly<blockquote><em>Number Separator String</em></blockquote>\endhtmlonly
+ *
+ * <p><em>Number</em> is a floating point number that can be parsed by a
+ * default <code>NumberFormat</code> for the US locale. It gives the
+ * lower limit of this range. The lower limit is either inclusive or
+ * exclusive, depending on the <em>separator</em>. The upper limit is
+ * given by the lower limit of the next range. The Unicode infinity
+ * sign \htmlonly&#x221E \endhtmlonly (U+221E) is recognized for positive infinity. It may be preceded by
+ * '-' (U+002D) to indicate negative infinity.</p>
+ *
+ * <p><em>String</em> is the format string for this range, with special
+ * characters enclosed in single quotes (<code>'The #
+ * sign'</code>). Single quotes themselves are indicated by two single
+ * quotes in a row (<code>'o''clock'</code>).</p>
+ *
+ * <p><em>Separator</em> is one of the following single characters:
+ *
+ * <ul>
+ * <li>\htmlonly'&#x2264;' \endhtmlonly (U+2264) or '#' (U+0023)
+ * indicates that the lower limit given by <em>Number</em> is
+ * inclusive. (The two characters are equivalent to ChoiceFormat.)
+ * This means that the limit value <em>Number</em> belongs to this
+ * range. Another way of saying this is that the corresponding
+ * closure is <code>FALSE</code>.</li>
+ *
+ * <li>'<' (U+003C) indicates that the lower limit given by
+ * <em>Number</em> is exclusive. This means that the value
+ * <em>Number</em> belongs to the prior range.</li> Another way of
+ * saying this is that the corresponding closure is
+ * <code>TRUE</code>.
+ * </ul>
+ *
+ * <p>See below for more information about closures.</p>
+ *
+ * <p><strong>Arrays</strong></p>
+ *
+ * <p>A <code>ChoiceFormat</code> defining <code>n</code> intervals
+ * (<code>n</code> &gt;= 2) is specified by three arrays of
+ * <code>n</code> items:
+ *
+ * <ul>
+ * <li><code>double limits[]</code> gives the start of each
+ * interval. This must be a non-decreasing list of values, none of
+ * which may be <code>NaN</code>.</li>
+ * <li><code>UBool closures[]</code> determines whether each limit
+ * value is contained in the interval below it or in the interval
+ * above it. If <code>closures[i]</code> is <code>FALSE</code>, then
+ * <code>limits[i]</code> is a member of interval
+ * <code>i</code>. Otherwise it is a member of interval
+ * <code>i+1</code>. If no closures array is specified, this is
+ * equivalent to having all closures be <code>FALSE</code>. Closures
+ * allow one to specify half-open, open, or closed intervals.</li>
+ * <li><code>UnicodeString formats[]</code> gives the string label
+ * associated with each interval.</li>
+ * </ul>
+ *
+ * <p><strong>Formatting and Parsing</strong></p>
+ *
+ * <p>During formatting, a number is converted to a
+ * string. <code>ChoiceFormat</code> accomplishes this by mapping the
+ * number to an interval using the following rule. Given a number
+ * <code>X</code> and and index value <code>j</code> in the range
+ * <code>0..n-1</code>, where <code>n</code> is the number of ranges:</p>
+ *
+ * \htmlonly<blockquote>\endhtmlonly<code>X</code> matches <code>j</code> if and only if
+ * <code>limit[j] &lt;= X &lt; limit[j+1]</code>
+ * \htmlonly</blockquote>\endhtmlonly
+ *
+ * <p>(This assumes that all closures are <code>FALSE</code>. If some
+ * closures are <code>TRUE</code> then the relations must be changed to
+ * <code>&lt;=</code> or <code>&lt;</code> as appropriate.) If there is
+ * no match, then either the first or last index is used, depending on
+ * whether the number is too low or too high. Once a number is mapped to
+ * an interval <code>j</code>, the string <code>formats[j]</code> is
+ * output.</p>
+ *
+ * <p>During parsing, a string is converted to a
+ * number. <code>ChoiceFormat</code> finds the element
+ * <code>formats[j]</code> equal to the string, and returns
+ * <code>limits[j]</code> as the parsed value.</p>
+ *
+ * <p><strong>Notes</strong></p>
+ *
+ * <p>The first limit value does not define a range boundary. For
+ * example, in the pattern \htmlonly&quot;<code>1.0#a|2.0#b</code>&quot;\endhtmlonly, the
+ * intervals are [-Inf, 2.0) and [2.0, +Inf]. It appears that the first
+ * interval should be [1.0, 2.0). However, since all values that are too
+ * small are mapped to range zero, the first interval is effectively
+ * [-Inf, 2.0). However, the first limit value <em>is</em> used during
+ * formatting. In this example, <code>parse(&quot;a&quot;)</code> returns
+ * 1.0.</p>
+ *
+ * <p>There are no gaps between intervals and the entire number line is
+ * covered. A <code>ChoiceFormat</code> maps <em>all</em> possible
+ * double values to a finite set of intervals.</p>
+ *
+ * <p>The non-number <code>NaN</code> is mapped to interval zero during
+ * formatting.</p>
+ *
+ * <p><strong>Examples</strong></p>
+ *
+ * <p>Here is an example of two arrays that map the number
+ * <code>1..7</code> to the English day of the week abbreviations
+ * <code>Sun..Sat</code>. No closures array is given; this is the same as
+ * specifying all closures to be <code>FALSE</code>.</p>
+ *
+ * <pre> {1,2,3,4,5,6,7},
+ * {&quot;Sun&quot;,&quot;Mon&quot;,&quot;Tue&quot;,&quot;Wed&quot;,&quot;Thur&quot;,&quot;Fri&quot;,&quot;Sat&quot;}</pre>
+ *
+ * <p>Here is an example that maps the ranges [-Inf, 1), [1, 1], and (1,
+ * +Inf] to three strings. That is, the number line is split into three
+ * ranges: x &lt; 1.0, x = 1.0, and x &gt; 1.0.</p>
+ *
+ * <pre> {0, 1, 1},
+ * {FALSE, FALSE, TRUE},
+ * {&quot;no files&quot;, &quot;one file&quot;, &quot;many files&quot;}</pre>
+ *
+ * <p>Here is a simple example that shows formatting and parsing: </p>
+ *
+ * \code
+ * #include <unicode/choicfmt.h>
+ * #include <unicode/unistr.h>
+ * #include <iostream.h>
+ *
+ * int main(int argc, char *argv[]) {
+ * double limits[] = {1,2,3,4,5,6,7};
+ * UnicodeString monthNames[] = {
+ * "Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
+ * ChoiceFormat fmt(limits, monthNames, 7);
+ * UnicodeString str;
+ * char buf[256];
+ * for (double x = 1.0; x <= 8.0; x += 1.0) {
+ * fmt.format(x, str);
+ * str.extract(0, str.length(), buf, 256, "");
+ * str.truncate(0);
+ * cout << x << " -> "
+ * << buf << endl;
+ * }
+ * cout << endl;
+ * return 0;
+ * }
+ * \endcode
+ *
+ * <p>Here is a more complex example using a <code>ChoiceFormat</code>
+ * constructed from a pattern together with a
+ * <code>MessageFormat</code>.</p>
+ *
+ * \code
+ * #include <unicode/choicfmt.h>
+ * #include <unicode/msgfmt.h>
+ * #include <unicode/unistr.h>
+ * #include <iostream.h>
+ *
+ * int main(int argc, char *argv[]) {
+ * UErrorCode status = U_ZERO_ERROR;
+ * double filelimits[] = {0,1,2};
+ * UnicodeString filepart[] =
+ * {"are no files","is one file","are {0} files"};
+ * ChoiceFormat* fileform = new ChoiceFormat(filelimits, filepart, 3 );
+ * Format* testFormats[] =
+ * {fileform, NULL, NumberFormat::createInstance(status)};
+ * MessageFormat pattform("There {0} on {1}", status );
+ * pattform.adoptFormats(testFormats, 3);
+ * Formattable testArgs[] = {0L, "Disk A"};
+ * FieldPosition fp(0);
+ * UnicodeString str;
+ * char buf[256];
+ * for (int32_t i = 0; i < 4; ++i) {
+ * Formattable fInt(i);
+ * testArgs[0] = fInt;
+ * pattform.format(testArgs, 2, str, fp, status );
+ * str.extract(0, str.length(), buf, "");
+ * str.truncate(0);
+ * cout << "Output for i=" << i << " : " << buf << endl;
+ * }
+ * cout << endl;
+ * return 0;
+ * }
+ * \endcode
+ *
+ * <p><em>User subclasses are not supported.</em> While clients may write
+ * subclasses, such code will not necessarily work and will not be
+ * guaranteed to work stably from release to release.
+ */
+class U_I18N_API ChoiceFormat: public NumberFormat {
+public:
+ /**
+ * Construct a new ChoiceFormat with the limits and the corresponding formats
+ * based on the pattern.
+ *
+ * @param pattern Pattern used to construct object.
+ * @param status Output param to receive success code. If the
+ * pattern cannot be parsed, set to failure code.
+ * @stable ICU 2.0
+ */
+ ChoiceFormat(const UnicodeString& pattern,
+ UErrorCode& status);
+
+
+ /**
+ * Construct a new ChoiceFormat with the given limits and formats. Copy
+ * the limits and formats instead of adopting them.
+ *
+ * @param limits Array of limit values.
+ * @param formats Array of formats.
+ * @param count Size of 'limits' and 'formats' arrays.
+ * @stable ICU 2.0
+ */
+
+ ChoiceFormat(const double* limits,
+ const UnicodeString* formats,
+ int32_t count );
+
+ /**
+ * Construct a new ChoiceFormat with the given limits and formats.
+ * Copy the limits and formats (instead of adopting them). By
+ * default, each limit in the array specifies the inclusive lower
+ * bound of its range, and the exclusive upper bound of the previous
+ * range. However, if the isLimitOpen element corresponding to a
+ * limit is TRUE, then the limit is the exclusive lower bound of its
+ * range, and the inclusive upper bound of the previous range.
+ * @param limits Array of limit values
+ * @param closures Array of booleans specifying whether each
+ * element of 'limits' is open or closed. If FALSE, then the
+ * corresponding limit is a member of the range above it. If TRUE,
+ * then the limit belongs to the range below it.
+ * @param formats Array of formats
+ * @param count Size of 'limits', 'closures', and 'formats' arrays
+ * @stable ICU 2.4
+ */
+ ChoiceFormat(const double* limits,
+ const UBool* closures,
+ const UnicodeString* formats,
+ int32_t count);
+
+ /**
+ * Copy constructor.
+ *
+ * @param that ChoiceFormat object to be copied from
+ * @stable ICU 2.0
+ */
+ ChoiceFormat(const ChoiceFormat& that);
+
+ /**
+ * Assignment operator.
+ *
+ * @param that ChoiceFormat object to be copied
+ * @stable ICU 2.0
+ */
+ const ChoiceFormat& operator=(const ChoiceFormat& that);
+
+ /**
+ * Destructor.
+ * @stable ICU 2.0
+ */
+ virtual ~ChoiceFormat();
+
+ /**
+ * Clone this Format object polymorphically. The caller owns the
+ * result and should delete it when done.
+ *
+ * @return a copy of this object
+ * @stable ICU 2.0
+ */
+ virtual Format* clone(void) const;
+
+ /**
+ * Return true if the given Format objects are semantically equal.
+ * Objects of different subclasses are considered unequal.
+ *
+ * @param other ChoiceFormat object to be compared
+ * @return true if other is the same as this.
+ * @stable ICU 2.0
+ */
+ virtual UBool operator==(const Format& other) const;
+
+ /**
+ * Sets the pattern.
+ * @param pattern The pattern to be applied.
+ * @param status Output param set to success/failure code on
+ * exit. If the pattern is invalid, this will be
+ * set to a failure result.
+ * @stable ICU 2.0
+ */
+ virtual void applyPattern(const UnicodeString& pattern,
+ UErrorCode& status);
+
+ /**
+ * Sets the pattern.
+ * @param pattern The pattern to be applied.
+ * @param parseError Struct to recieve information on position
+ * of error if an error is encountered
+ * @param status Output param set to success/failure code on
+ * exit. If the pattern is invalid, this will be
+ * set to a failure result.
+ * @stable ICU 2.0
+ */
+ virtual void applyPattern(const UnicodeString& pattern,
+ UParseError& parseError,
+ UErrorCode& status);
+ /**
+ * Gets the pattern.
+ *
+ * @param pattern Output param which will recieve the pattern
+ * Previous contents are deleted.
+ * @return A reference to 'pattern'
+ * @stable ICU 2.0
+ */
+ virtual UnicodeString& toPattern(UnicodeString &pattern) const;
+
+#ifdef U_USE_CHOICE_FORMAT_DEPRECATES
+ /**
+ * Set the choices to be used in formatting. The arrays are adopted and
+ * should not be deleted by the caller.
+ *
+ * @param limitsToAdopt Contains the top value that you want
+ * parsed with that format,and should be in
+ * ascending sorted order. When formatting X,
+ * the choice will be the i, where limit[i]
+ * &lt;= X &lt; limit[i+1].
+ * @param formatsToAdopt The format strings you want to use for each limit.
+ * @param count The size of the above arrays.
+ * @obsolete ICU 2.6. Use setChoices instead since this API will be removed in that release.
+ */
+ virtual void adoptChoices(double* limitsToAdopt,
+ UnicodeString* formatsToAdopt,
+ int32_t count );
+
+ /**
+ * Set the choices to be used in formatting. The arrays are adopted
+ * and should not be deleted by the caller. See class description
+ * for documenatation of the limits, closures, and formats arrays.
+ * @param limitsToAdopt Array of limits to adopt
+ * @param closuresToAdopt Array of limit booleans to adopt
+ * @param formatsToAdopt Array of format string to adopt
+ * @param count The size of the above arrays
+ * @obsolete ICU 2.6. Use setChoices instead since this API will be removed in that release.
+ */
+ virtual void adoptChoices(double* limitsToAdopt,
+ UBool* closuresToAdopt,
+ UnicodeString* formatsToAdopt,
+ int32_t count);
+#endif
+
+ /**
+ * Set the choices to be used in formatting.
+ *
+ * @param limitsToCopy Contains the top value that you want
+ * parsed with that format,and should be in
+ * ascending sorted order. When formatting X,
+ * the choice will be the i, where limit[i]
+ * &lt;= X &lt; limit[i+1].
+ * @param formatsToCopy The format strings you want to use for each limit.
+ * @param count The size of the above arrays.
+ * @stable ICU 2.0
+ */
+ virtual void setChoices(const double* limitsToCopy,
+ const UnicodeString* formatsToCopy,
+ int32_t count );
+
+ /**
+ * Set the choices to be used in formatting. See class description
+ * for documenatation of the limits, closures, and formats arrays.
+ * @param limits Array of limits
+ * @param closures Array of limit booleans
+ * @param formats Array of format string
+ * @param count The size of the above arrays
+ * @stable ICU 2.4
+ */
+ virtual void setChoices(const double* limits,
+ const UBool* closures,
+ const UnicodeString* formats,
+ int32_t count);
+
+ /**
+ * Get the limits passed in the constructor.
+ *
+ * @param count The size of the limits arrays
+ * @return the limits.
+ * @stable ICU 2.0
+ */
+ virtual const double* getLimits(int32_t& count) const;
+
+ /**
+ * Get the limit booleans passed in the constructor. The caller
+ * must not delete the result.
+ *
+ * @param count The size of the arrays
+ * @return the closures
+ * @stable ICU 2.4
+ */
+ virtual const UBool* getClosures(int32_t& count) const;
+
+ /**
+ * Get the formats passed in the constructor.
+ *
+ * @param count The size of the arrays
+ * @return the formats.
+ * @stable ICU 2.0
+ */
+ virtual const UnicodeString* getFormats(int32_t& count) const;
+
+ /**
+ * Format a double or long number using this object's choices.
+ *
+ * @param number The value to be formatted.
+ * @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.
+ * @return Reference to 'appendTo' parameter.
+ * @stable ICU 2.0
+ */
+ virtual UnicodeString& format(double number,
+ UnicodeString& appendTo,
+ FieldPosition& pos) const;
+ /**
+ * Format a int_32t number using this object's choices.
+ *
+ * @param number The value to be formatted.
+ * @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.
+ * @return Reference to 'appendTo' parameter.
+ * @stable ICU 2.0
+ */
+ virtual UnicodeString& format(int32_t number,
+ UnicodeString& appendTo,
+ FieldPosition& pos) const;
+
+ /**
+ * Format an int64_t number using this object's choices.
+ *
+ * @param number The value to be formatted.
+ * @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.
+ * @return Reference to 'appendTo' parameter.
+ * @stable ICU 2.8
+ */
+ virtual UnicodeString& format(int64_t number,
+ UnicodeString& appendTo,
+ FieldPosition& pos) const;
+
+ /**
+ * Format an array of objects using this object's choices.
+ *
+ * @param objs The array of objects to be formatted.
+ * @param cnt The size of objs.
+ * @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 success Output param set to success/failure code on
+ * exit.
+ * @return Reference to 'appendTo' parameter.
+ * @stable ICU 2.0
+ */
+ virtual UnicodeString& format(const Formattable* objs,
+ int32_t cnt,
+ UnicodeString& appendTo,
+ FieldPosition& pos,
+ UErrorCode& success) const;
+ /**
+ * Format an object using this object's choices.
+ *
+ *
+ * @param obj The object to be formatted.
+ * @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 set to success/failure code on
+ * exit.
+ * @return Reference to 'appendTo' parameter.
+ * @stable ICU 2.0
+ */
+ virtual UnicodeString& format(const Formattable& obj,
+ UnicodeString& appendTo,
+ FieldPosition& pos,
+ UErrorCode& status) const;
+
+ /**
+ * Redeclared NumberFormat method.
+ *
+ * @param obj The object to be formatted.
+ * @param appendTo Output parameter to receive result.
+ * Result is appended to existing contents.
+ * @param status Output param set to success/failure code on
+ * exit.
+ * @return Reference to 'appendTo' parameter.
+ * @stable ICU 2.0
+ */
+ UnicodeString& format(const Formattable& obj,
+ UnicodeString& appendTo,
+ UErrorCode& status) const;
+
+ /**
+ * Redeclared NumberFormat method.
+ * Format a double number. These methods call the NumberFormat
+ * pure virtual format() methods with the default FieldPosition.
+ *
+ * @param number The value to be formatted.
+ * @param appendTo Output parameter to receive result.
+ * Result is appended to existing contents.
+ * @return Reference to 'appendTo' parameter.
+ * @stable ICU 2.0
+ */
+ UnicodeString& format( double number,
+ UnicodeString& appendTo) const;
+
+ /**
+ * Redeclared NumberFormat method.
+ * Format a long number. These methods call the NumberFormat
+ * pure virtual format() methods with the default FieldPosition.
+ *
+ * @param number The value to be formatted.
+ * @param appendTo Output parameter to receive result.
+ * Result is appended to existing contents.
+ * @return Reference to 'appendTo' parameter.
+ * @stable ICU 2.0
+ */
+ UnicodeString& format( int32_t number,
+ UnicodeString& appendTo) const;
+
+ /**
+ * Return a long if possible (e.g. within range LONG_MAX,
+ * LONG_MAX], and with no decimals), otherwise a double. If
+ * IntegerOnly is set, will stop at a decimal point (or equivalent;
+ * e.g. for rational numbers "1 2/3", will stop after the 1).
+ * <P>
+ * If no object can be parsed, parsePosition is unchanged, and NULL is
+ * returned.
+ *
+ * @param text The text to be parsed.
+ * @param result Formattable to be set to the parse result.
+ * If parse fails, return contents are undefined.
+ * @param parsePosition The position to start parsing at on input.
+ * On output, moved to after the last successfully
+ * parse character. On parse failure, does not change.
+ * @see NumberFormat::isParseIntegerOnly
+ * @stable ICU 2.0
+ */
+ virtual void parse(const UnicodeString& text,
+ Formattable& result,
+ ParsePosition& parsePosition) const;
+
+ /**
+ * Return a long if possible (e.g. within range LONG_MAX,
+ * LONG_MAX], and with no decimals), otherwise a double. If
+ * IntegerOnly is set, will stop at a decimal point (or equivalent;
+ * e.g. for rational numbers "1 2/3", will stop after the 1).
+ * <P>
+ * If no object can be parsed, parsePosition is unchanged, and NULL is
+ * returned.
+ *
+ * @param text The text to be parsed.
+ * @param result Formattable to be set to the parse result.
+ * If parse fails, return contents are undefined.
+ * @param status Output param with the formatted string.
+ * @see NumberFormat::isParseIntegerOnly
+ * @stable ICU 2.0
+ */
+ virtual void parse(const UnicodeString& text,
+ Formattable& result,
+ UErrorCode& status) const;
+
+
+public:
+ /**
+ * Returns a unique class ID POLYMORPHICALLY. Pure virtual override.
+ * This method is to implement a simple version of RTTI, since not all
+ * C++ compilers support genuine RTTI. Polymorphic operator==() and
+ * clone() methods call this method.
+ *
+ * @return The class ID for this object. All objects of a
+ * given class have the same class ID. Objects of
+ * other classes have different class IDs.
+ * @stable ICU 2.0
+ */
+ virtual UClassID getDynamicClassID(void) const;
+
+ /**
+ * Return the class ID for this class. This is useful only for
+ * comparing to a return value from getDynamicClassID(). For example:
+ * <pre>
+ * . Base* polymorphic_pointer = createPolymorphicObject();
+ * . if (polymorphic_pointer->getDynamicClassID() ==
+ * . Derived::getStaticClassID()) ...
+ * </pre>
+ * @return The class ID for all objects of this class.
+ * @stable ICU 2.0
+ */
+ static UClassID U_EXPORT2 getStaticClassID(void);
+
+private:
+ // static cache management (thread-safe)
+ // static NumberFormat* getNumberFormat(UErrorCode &status); // call this function to 'check out' a numberformat from the cache.
+ // static void releaseNumberFormat(NumberFormat *adopt); // call this function to 'return' the number format to the cache.
+
+ /**
+ * Converts a string to a double value using a default NumberFormat object
+ * which is static (shared by all ChoiceFormat instances).
+ * @param string the string to be converted with.
+ * @return the converted double number.
+ */
+ static double stod(const UnicodeString& string);
+
+ /**
+ * Converts a double value to a string using a default NumberFormat object
+ * which is static (shared by all ChoiceFormat instances).
+ * @param value the double number to be converted with.
+ * @param string the result string.
+ * @return the converted string.
+ */
+ static UnicodeString& dtos(double value, UnicodeString& string);
+
+ ChoiceFormat(); // default constructor not implemented
+
+ /**
+ * Construct a new ChoiceFormat with the limits and the corresponding formats
+ * based on the pattern.
+ *
+ * @param newPattern Pattern used to construct object.
+ * @param parseError Struct to recieve information on position
+ * of error if an error is encountered.
+ * @param status Output param to receive success code. If the
+ * pattern cannot be parsed, set to failure code.
+ * @stable ICU 2.0
+ */
+ ChoiceFormat(const UnicodeString& newPattern,
+ UParseError& parseError,
+ UErrorCode& status);
+
+ friend class MessageFormat;
+ /**
+ * Each ChoiceFormat divides the range -Inf..+Inf into fCount
+ * intervals. The intervals are:
+ *
+ * 0: fChoiceLimits[0]..fChoiceLimits[1]
+ * 1: fChoiceLimits[1]..fChoiceLimits[2]
+ * ...
+ * fCount-2: fChoiceLimits[fCount-2]..fChoiceLimits[fCount-1]
+ * fCount-1: fChoiceLimits[fCount-1]..+Inf
+ *
+ * Interval 0 is special; during formatting (mapping numbers to
+ * strings), it also contains all numbers less than
+ * fChoiceLimits[0], as well as NaN values.
+ *
+ * Interval i maps to and from string fChoiceFormats[i]. When
+ * parsing (mapping strings to numbers), then intervals map to
+ * their lower limit, that is, interval i maps to fChoiceLimit[i].
+ *
+ * The intervals may be closed, half open, or open. This affects
+ * formatting but does not affect parsing. Interval i is affected
+ * by fClosures[i] and fClosures[i+1]. If fClosures[i]
+ * is FALSE, then the value fChoiceLimits[i] is in interval i.
+ * That is, intervals i and i are:
+ *
+ * i-1: ... x < fChoiceLimits[i]
+ * i: fChoiceLimits[i] <= x ...
+ *
+ * If fClosures[i] is TRUE, then the value fChoiceLimits[i] is
+ * in interval i-1. That is, intervals i-1 and i are:
+ *
+ * i-1: ... x <= fChoiceLimits[i]
+ * i: fChoiceLimits[i] < x ...
+ *
+ * Because of the nature of interval 0, fClosures[0] has no
+ * effect.
+
+ */
+ double* fChoiceLimits;
+ UBool* fClosures;
+ UnicodeString* fChoiceFormats;
+ int32_t fCount;
+};
+
+inline UnicodeString&
+ChoiceFormat::format(const Formattable& obj,
+ UnicodeString& appendTo,
+ UErrorCode& status) const {
+ // Don't use Format:: - use immediate base class only,
+ // in case immediate base modifies behavior later.
+ return NumberFormat::format(obj, appendTo, status);
+}
+
+inline UnicodeString&
+ChoiceFormat::format(double number,
+ UnicodeString& appendTo) const {
+ return NumberFormat::format(number, appendTo);
+}
+
+inline UnicodeString&
+ChoiceFormat::format(int32_t number,
+ UnicodeString& appendTo) const {
+ return NumberFormat::format(number, appendTo);
+}
+U_NAMESPACE_END
+
+#endif /* #if !UCONFIG_NO_FORMATTING */
+
+#endif // _CHOICFMT
+//eof