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  #   %ˆl–äY>””†»€jà€¦-ÿÐƒu—^ÏÀÍ Ò    %// Â© 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*   Copyright (C) 2010-2016, International Business Machines
*   Corporation and others.  All Rights Reserved.
*******************************************************************************
*   file name:  ucharstriebuilder.h
*   encoding:   UTF-8
*   tab size:   8 (not used)
*   indentation:4
*
*   created on: 2010nov14
*   created by: Markus W. Scherer
*/

#ifndef __UCHARSTRIEBUILDER_H__
#define __UCHARSTRIEBUILDER_H__

#include "unicode/utypes.h"

#if U_SHOW_CPLUSPLUS_API

#include "unicode/stringtriebuilder.h"
#include "unicode/ucharstrie.h"
#include "unicode/unistr.h"

/**
 * \file
 * \brief C++ API: Builder for icu::UCharsTrie
 */

U_NAMESPACE_BEGIN

class UCharsTrieElement;

/**
 * Builder class for UCharsTrie.
 *
 * This class is not intended for public subclassing.
 * @stable ICU 4.8
 */
class U_COMMON_API UCharsTrieBuilder : public StringTrieBuilder {
public:
    /**
     * Constructs an empty builder.
     * @param errorCode Standard ICU error code.
     * @stable ICU 4.8
     */
    UCharsTrieBuilder(UErrorCode &errorCode);

    /**
     * Destructor.
     * @stable ICU 4.8
     */
    virtual ~UCharsTrieBuilder();

    /**
     * Adds a (string, value) pair.
     * The string must be unique.
     * The string contents will be copied; the builder does not keep
     * a reference to the input UnicodeString or its buffer.
     * @param s The input string.
     * @param value The value associated with this string.
     * @param errorCode Standard ICU error code. Its input value must
     *                  pass the U_SUCCESS() test, or else the function returns
     *                  immediately. Check for U_FAILURE() on output or use with
     *                  function chaining. (See User Guide for details.)
     * @return *this
     * @stable ICU 4.8
     */
    UCharsTrieBuilder &add(const UnicodeString &s, int32_t value, UErrorCode &errorCode);

    /**
     * Builds a UCharsTrie for the add()ed data.
     * Once built, no further data can be add()ed until clear() is called.
     *
     * A UCharsTrie cannot be empty. At least one (string, value) pair
     * must have been add()ed.
     *
     * This method passes ownership of the builder's internal result array to the new trie object.
     * Another call to any build() variant will re-serialize the trie.
     * After clear() has been called, a new array will be used as well.
     * @param buildOption Build option, see UStringTrieBuildOption.
     * @param errorCode Standard ICU error code. Its input value must
     *                  pass the U_SUCCESS() test, or else the function returns
     *                  immediately. Check for U_FAILURE() on output or use with
     *                  function chaining. (See User Guide for details.)
     * @return A new UCharsTrie for the add()ed data.
     * @stable ICU 4.8
     */
    UCharsTrie *build(UStringTrieBuildOption buildOption, UErrorCode &errorCode);

    /**
     * Builds a UCharsTrie for the add()ed data and char16_t-serializes it.
     * Once built, no further data can be add()ed until clear() is called.
     *
     * A UCharsTrie cannot be empty. At least one (string, value) pair
     * must have been add()ed.
     *
     * Multiple calls to buildUnicodeString() set the UnicodeStrings to the
     * builder's same char16_t array, without rebuilding.
     * If buildUnicodeString() is called after build(), the trie will be
     * re-serialized into a new array.
     * If build() is called after buildUnicodeString(), the trie object will become
     * the owner of the previously returned array.
     * After clear() has been called, a new array will be used as well.
     * @param buildOption Build option, see UStringTrieBuildOption.
     * @param result A UnicodeString which will be set to the char16_t-serialized
     *               UCharsTrie f