88 lines
1.8 KiB
C++
88 lines
1.8 KiB
C++
//
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// immer: immutable data structures for C++
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// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
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//
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// This software is distributed under the Boost Software License, Version 1.0.
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// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
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//
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#pragma once
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#include <scm/detail/define.hpp>
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#include <string>
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namespace scm {
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namespace detail {
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template <typename Tag, int Seq=0>
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struct definer
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{
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using this_t = definer;
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using next_t = definer<Tag, Seq + 1>;
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std::string group_name_ = {};
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definer() = default;
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definer(definer&&) = default;
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template <int Seq2,
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typename Enable=std::enable_if_t<Seq2 + 1 == Seq>>
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definer(definer<Tag, Seq2>)
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{}
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template <typename Fn>
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next_t define(std::string name, Fn fn) &&
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{
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define_impl<this_t>(name, fn);
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return { std::move(*this) };
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}
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template <typename Fn>
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next_t maker(Fn fn) &&
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{
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define_impl<this_t>("make", fn);
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return { std::move(*this) };
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}
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};
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template <typename Tag, int Seq=0>
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struct group_definer
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{
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using this_t = group_definer;
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using next_t = group_definer<Tag, Seq + 1>;
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std::string group_name_ = {};
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group_definer(std::string name)
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: group_name_{std::move(name)} {}
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group_definer(group_definer&&) = default;
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template <int Seq2,
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typename Enable=std::enable_if_t<Seq2 + 1 == Seq>>
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group_definer(group_definer<Tag, Seq2>)
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{}
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template <typename Fn>
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next_t define(std::string name, Fn fn) &&
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{
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define_impl<this_t>(group_name_ + "-" + name, fn);
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return { std::move(*this) };
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}
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};
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} // namespace detail
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template <typename Tag=void>
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detail::definer<Tag> group()
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{
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return {};
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}
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template <typename Tag=void>
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detail::group_definer<Tag> group(std::string name)
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{
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return { std::move(name) };
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}
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} // namespace scm
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