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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*
* Copyright (C) 2002-2006, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: uenumimp.h
* encoding: UTF-8
* tab size: 8 (not used)
* indentation:2
*
* created on: 2002jul08
* created by: Vladimir Weinstein
*/
#ifndef __UENUMIMP_H
#define __UENUMIMP_H
#include "unicode/uenum.h"
U_CDECL_BEGIN
/**
* following are the type declarations for
* implementations of APIs. If any of these
* functions are NULL, U_UNSUPPORTED_ERROR
* is returned. If close is NULL, the enumeration
* object is going to be released.
* Initial error checking is done in the body
* of API function, so the implementations
* need not to check the initial error condition.
*/
/**
* Function type declaration for uenum_close().
*
* This function should cleanup the enumerator object
*
* @param en enumeration to be closed
*/
typedef void U_CALLCONV
UEnumClose(UEnumeration *en);
/**
* Function type declaration for uenum_count().
*
* This function should count the number of elements
* in this enumeration
*
* @param en enumeration to be counted
* @param status pointer to UErrorCode variable
* @return number of elements in enumeration
*/
typedef int32_t U_CALLCONV
UEnumCount(UEnumeration *en, UErrorCode *status);
/**
* Function type declaration for uenum_unext().
*
* This function returns the next element as a UChar *,
* or NULL after all elements haven been enumerated.
*
* @param en enumeration
* @param resultLength pointer to result length
* @param status pointer to UErrorCode variable
* @return next element as UChar *,
* or NULL after all elements haven been enumerated
*/
typedef const UChar* U_CALLCONV
UEnumUNext(UEnumeration* en,
int32_t* resultLength,
UErrorCode* status);
/**
* Function type declaration for uenum_next().
*
* This function returns the next element as a char *,
* or NULL after all elements haven been enumerated.
*
* @param en enumeration
* @param resultLength pointer to result length
* @param status pointer to UErrorCode variable
* @return next element as char *,
* or NULL after all elements haven been enumerated
*/
typedef const char* U_CALLCONV
UEnumNext(UEnumeration* en,
int32_t* resultLength,
UErrorCode* status);
/**
* Function type declaration for uenum_reset().
*
* This function should reset the enumeration
* object
*
* @param en enumeration
* @param status pointer to UErrorCode variable
*/
typedef void U_CALLCONV
UEnumReset(UEnumeration* en,
UErrorCode* status);
struct UEnumeration {
/* baseContext. For the base class only. Don't touch! */
void *baseContext;
/* context. Use it for what you need */
void *context;
/**
* these are functions that will
* be used for APIs
*/
/* called from uenum_close */
UEnumClose *close;
/* called from uenum_count */
UEnumCount *count;
/* called from uenum_unext */
UEnumUNext *uNext;
/* called from uenum_next */
UEnumNext *next;
/* called from uenum_reset */
UEnumReset *reset;
};
U_CDECL_END
/* This is the default implementation for uenum_unext().
* It automatically converts the char * string to UChar *.
* Don't call this directly. This is called internally by uenum_unext
* when a UEnumeration is defined with 'uNext' pointing to this
* function.
*/
U_CAPI const UChar* U_EXPORT2
uenum_unextDefault(UEnumeration* en,
int32_t* resultLength,
UErrorCode* status);
/* This is the default implementation for uenum_next().
* It automatically converts the UChar * string to char *.
* Don't call this directly. This is called internally by uenum_next
* when a UEnumeration is defined with 'next' pointing to this
* function.
*/
U_CAPI const char* U_EXPORT2
uenum_nextDefault(UEnumeration* en,
int32_t* resultLength,
UErrorCode* status);
#endif