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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
**********************************************************************
* Copyright (c) 2002-2014, International Business Machines
* Corporation and others. All Rights Reserved.
**********************************************************************
* Author: Alan Liu
* Created: November 11 2002
* Since: ICU 2.4
**********************************************************************
*/
#ifndef _USTRENUM_H_
#define _USTRENUM_H_
#include "unicode/uenum.h"
#include "unicode/strenum.h"
//----------------------------------------------------------------------
U_NAMESPACE_BEGIN
/**
* A wrapper to make a UEnumeration into a StringEnumeration. The
* wrapper adopts the UEnumeration is wraps.
*/
class U_COMMON_API UStringEnumeration : public StringEnumeration {
public:
/**
* Constructor. This constructor adopts its UEnumeration
* argument.
* @param uenum a UEnumeration object. This object takes
* ownership of 'uenum' and will close it in its destructor. The
* caller must not call uenum_close on 'uenum' after calling this
* constructor.
*/
UStringEnumeration(UEnumeration* uenum);
/**
* Destructor. This closes the UEnumeration passed in to the
* constructor.
*/
virtual ~UStringEnumeration();
/**
* Return the number of elements that the iterator traverses.
* @param status the error code.
* @return number of elements in the iterator.
*/
virtual int32_t count(UErrorCode& status) const override;
virtual const char* next(int32_t *resultLength, UErrorCode& status) override;
/**
* Returns the next element a UnicodeString*. If there are no
* more elements, returns nullptr.
* @param status the error code.
* @return a pointer to the string, or nullptr.
*/
virtual const UnicodeString* snext(UErrorCode& status) override;
/**
* Resets the iterator.
* @param status the error code.
*/
virtual void reset(UErrorCode& status) override;
/**
* ICU4C "poor man's RTTI", returns a UClassID for the actual ICU class.
*/
virtual UClassID getDynamicClassID() const override;
/**
* ICU4C "poor man's RTTI", returns a UClassID for this ICU class.
*/
static UClassID U_EXPORT2 getStaticClassID();
static UStringEnumeration * U_EXPORT2 fromUEnumeration(
UEnumeration *enumToAdopt, UErrorCode &status);
private:
UEnumeration *uenum; // owned
};
U_NAMESPACE_END
#endif
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