84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* Copyright:
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* 2014-2018 Danny Robson <danny@nerdcruft.net>
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* 2022 Danny Robson <danny@nerdcruft.net>
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*/
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#pragma once
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#include "view.hpp"
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#include <map>
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#include <string>
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namespace cruft {
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class stringid {
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public:
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typedef size_t id_t;
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///////////////////////////////////////////////////////////////////////
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/// Returns the ID for the supplied string, or creates and returns a
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/// new ID if the string is not present.
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id_t operator[] (std::string_view const&);
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// provided for symmetry with std member names
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id_t at (std::string_view const &name) const { return find (name); }
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///////////////////////////////////////////////////////////////////////
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id_t add (std::string);
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//---------------------------------------------------------------------
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template <typename T>
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id_t add (cruft::view<T> key)
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{
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return add (
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std::string{
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std::cbegin (key),
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std::cend (key)
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}
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);
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}
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///////////////////////////////////////////////////////////////////////
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id_t find (std::string_view const&) const;
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//---------------------------------------------------------------------
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template <typename T>
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id_t find (cruft::view<T> key) const
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{
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return find (
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std::string_view {
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std::cbegin (key),
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std::cend (key)
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}
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);
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}
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///////////////////////////////////////////////////////////////////////
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/// Returns the underlying string that an id maps to.
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///
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/// If there is no such id then a std::out_of_range exception is
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/// thrown.
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std::string const&
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key (id_t id) const&;
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///////////////////////////////////////////////////////////////////////
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void clear (void) noexcept;
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std::size_t size (void) const noexcept;
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private:
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std::map<std::string const, id_t, std::less<>> m_map;
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};
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} |