mirror of https://github.com/djcb/mu.git
67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
/*
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** Copyright (C) 2023 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
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**
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** This program is free software; you can redistribute it and/or modify it
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** under the terms of the GNU General Public License as published by the
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** Free Software Foundation; either version 3, or (at your option) any
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** later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software Foundation,
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** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**
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*/
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#ifndef MU_OPTION__
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#define MU_OPTION__
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#include "thirdparty/optional.hpp"
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#include <string>
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namespace Mu {
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/// Either a value of type T, or None
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template <typename T> using Option = tl::optional<T>;
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template <typename T>
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Option<T>
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Some(T&& t)
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{
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return std::move(t);
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}
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constexpr auto Nothing = tl::nullopt; // 'None' is already taken.
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/**
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* Maybe create a string from a const char pointer.
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*
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* @param str a char pointer or NULL
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*
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* @return option with either the string or nothing if str was NULL.
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*/
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Option<std::string>
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static inline to_string_opt(const char* str) {
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if (str)
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return std::string{str};
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else
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return Nothing;
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}
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/**
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* Like maybe_string that takes a const char*, but additionally,
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* g_free() the string.
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*
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* @param str char pointer or NULL (consumed)
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*
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* @return option with either the string or nothing if str was NULL.
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*/
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Option<std::string> to_string_opt_gchar(char*&& str);
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} // namespace Mu
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#endif /*MU_OPTION__*/
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