chromium/third_party/icu/source/i18n/transreg.h

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
**********************************************************************
*   Copyright (c) 2001-2014, International Business Machines
*   Corporation and others.  All Rights Reserved.
**********************************************************************
*   Date        Name        Description
*   08/10/2001  aliu        Creation.
**********************************************************************
*/
#ifndef _TRANSREG_H
#define _TRANSREG_H

#include "unicode/utypes.h"

#if !UCONFIG_NO_TRANSLITERATION

#include "unicode/uobject.h"
#include "unicode/translit.h"
#include "hash.h"
#include "uvector.h"

U_NAMESPACE_BEGIN

class TransliteratorEntry;
class TransliteratorSpec;
class UnicodeString;

//------------------------------------------------------------------
// TransliteratorAlias
//------------------------------------------------------------------

/**
 * A TransliteratorAlias object is returned by get() if the given ID
 * actually translates into something else.  The caller then invokes
 * the create() method on the alias to create the actual
 * transliterator, and deletes the alias.
 *
 * Why all the shenanigans?  To prevent circular calls between
 * the registry code and the transliterator code that deadlocks.
 */
class TransliteratorAlias : public UMemory { … };


/**
 * A registry of system transliterators.  This is the data structure
 * that implements the mapping between transliterator IDs and the data
 * or function pointers used to create the corresponding
 * transliterators.  There is one instance of the registry that is
 * created statically.
 *
 * The registry consists of a dynamic component -- a hashtable -- and
 * a static component -- locale resource bundles.  The dynamic store
 * is semantically overlaid on the static store, so the static mapping
 * can be dynamically overridden.
 *
 * This is an internal class that is only used by Transliterator.
 * Transliterator maintains one static instance of this class and
 * delegates all registry-related operations to it.
 *
 * @author Alan Liu
 */
class TransliteratorRegistry : public UMemory { … };

U_NAMESPACE_END

U_CFUNC UBool utrans_transliterator_cleanup();

#endif /* #if !UCONFIG_NO_TRANSLITERATION */

#endif
//eof