chromium/third_party/icu/source/i18n/unicode/format.h

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
********************************************************************************
* Copyright (C) 1997-2011, International Business Machines Corporation and others.
* All Rights Reserved.
********************************************************************************
*
* File FORMAT.H
*
* Modification History:
*
*   Date        Name        Description
*   02/19/97    aliu        Converted from java.
*   03/17/97    clhuang     Updated per C++ implementation.
*   03/27/97    helena      Updated to pass the simple test after code review.
********************************************************************************
*/
// *****************************************************************************
// This file was generated from the java source file Format.java
// *****************************************************************************

#ifndef FORMAT_H
#define FORMAT_H


#include "unicode/utypes.h"

#if U_SHOW_CPLUSPLUS_API

/**
 * \file 
 * \brief C++ API: Base class for all formats. 
 */

#if !UCONFIG_NO_FORMATTING

#include "unicode/unistr.h"
#include "unicode/fmtable.h"
#include "unicode/fieldpos.h"
#include "unicode/fpositer.h"
#include "unicode/parsepos.h"
#include "unicode/parseerr.h" 
#include "unicode/locid.h"

U_NAMESPACE_BEGIN

/**
 * Base class for all formats.  This is an abstract base class which
 * specifies the protocol for classes which convert other objects or
 * values, such as numeric values and dates, and their string
 * representations.  In some cases these representations may be
 * localized or contain localized characters or strings.  For example,
 * a numeric formatter such as DecimalFormat may convert a numeric
 * value such as 12345 to the string "$12,345".  It may also parse
 * the string back into a numeric value.  A date and time formatter
 * like SimpleDateFormat may represent a specific date, encoded
 * numerically, as a string such as "Wednesday, February 26, 1997 AD".
 * <P>
 * Many of the concrete subclasses of Format employ the notion of
 * a pattern.  A pattern is a string representation of the rules which
 * govern the interconversion between values and strings.  For example,
 * a DecimalFormat object may be associated with the pattern
 * "$#,##0.00;($#,##0.00)", which is a common US English format for
 * currency values, yielding strings such as "$1,234.45" for 1234.45,
 * and "($987.65)" for 987.6543.  The specific syntax of a pattern
 * is defined by each subclass.
 * <P>
 * Even though many subclasses use patterns, the notion of a pattern
 * is not inherent to Format classes in general, and is not part of
 * the explicit base class protocol.
 * <P>
 * Two complex formatting classes bear mentioning.  These are
 * MessageFormat and ChoiceFormat.  ChoiceFormat is a subclass of
 * NumberFormat which allows the user to format different number ranges
 * as strings.  For instance, 0 may be represented as "no files", 1 as
 * "one file", and any number greater than 1 as "many files".
 * MessageFormat is a formatter which utilizes other Format objects to
 * format a string containing with multiple values.  For instance,
 * A MessageFormat object might produce the string "There are no files
 * on the disk MyDisk on February 27, 1997." given the arguments 0,
 * "MyDisk", and the date value of 2/27/97.  See the ChoiceFormat
 * and MessageFormat headers for further information.
 * <P>
 * If formatting is unsuccessful, a failing UErrorCode is returned when
 * the Format cannot format the type of object, otherwise if there is
 * something illformed about the the Unicode replacement character
 * 0xFFFD is returned.
 * <P>
 * If there is no match when parsing, a parse failure UErrorCode is
 * returned for methods which take no ParsePosition.  For the method
 * that takes a ParsePosition, the index parameter is left unchanged.
 * <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 Format : public UObject { … };

U_NAMESPACE_END

#endif /* #if !UCONFIG_NO_FORMATTING */

#endif /* U_SHOW_CPLUSPLUS_API */

#endif // _FORMAT
//eof