string_pool.hpp

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
#ifndef INCLUDED_ORCUS_STRING_POOL_HPP
#define INCLUDED_ORCUS_STRING_POOL_HPP
 
#include "env.hpp"
 
#include <string>
#include <memory>
#include <vector>
 
namespace orcus {

class ORCUS_PSR_DLLPUBLIC string_pool
{
public:
    string_pool(const string_pool&) = delete;
    string_pool& operator=(const string_pool&) = delete;
 
    string_pool();
    string_pool(string_pool&& other);
    ~string_pool();

    std::pair<std::string_view, bool> intern(std::string_view str);

    std::vector<std::string_view> get_interned_strings() const;

    void dump() const;

    void clear();

    size_t size() const;

    void swap(string_pool& other);

    void merge(string_pool& other);
 
private:
    struct impl;
    std::unique_ptr<impl> mp_impl;
};
 
}
 
#endif
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