110 lines
2.8 KiB
C++
110 lines
2.8 KiB
C++
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//
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// Copyright (c) 2019-2024 Ruben Perez Hidalgo (rubenperez038 at gmail dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef BOOST_MYSQL_DETAIL_NEXT_ACTION_HPP
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#define BOOST_MYSQL_DETAIL_NEXT_ACTION_HPP
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#include <boost/mysql/error_code.hpp>
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#include <boost/assert.hpp>
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#include <boost/core/span.hpp>
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#include <cstdint>
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namespace boost {
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namespace mysql {
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namespace detail {
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enum class next_action_type
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{
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none,
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write,
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read,
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ssl_handshake,
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ssl_shutdown,
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connect,
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close,
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};
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class next_action
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{
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public:
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struct read_args_t
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{
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span<std::uint8_t> buffer;
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bool use_ssl;
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};
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struct write_args_t
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{
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span<const std::uint8_t> buffer;
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bool use_ssl;
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};
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next_action(error_code ec = {}) noexcept : type_(next_action_type::none), data_(ec) {}
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// Type
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next_action_type type() const noexcept { return type_; }
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bool is_done() const noexcept { return type_ == next_action_type::none; }
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bool success() const noexcept { return is_done() && !data_.ec; }
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// Arguments
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error_code error() const noexcept
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{
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BOOST_ASSERT(is_done());
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return data_.ec;
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}
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read_args_t read_args() const noexcept
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{
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BOOST_ASSERT(type_ == next_action_type::read);
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return data_.read_args;
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}
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write_args_t write_args() const noexcept
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{
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BOOST_ASSERT(type_ == next_action_type::write);
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return data_.write_args;
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}
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static next_action connect() noexcept { return next_action(next_action_type::connect, data_t()); }
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static next_action read(read_args_t args) noexcept { return next_action(next_action_type::read, args); }
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static next_action write(write_args_t args) noexcept
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{
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return next_action(next_action_type::write, args);
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}
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static next_action ssl_handshake() noexcept
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{
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return next_action(next_action_type::ssl_handshake, data_t());
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}
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static next_action ssl_shutdown() noexcept
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{
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return next_action(next_action_type::ssl_shutdown, data_t());
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}
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static next_action close() noexcept { return next_action(next_action_type::close, data_t()); }
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private:
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next_action_type type_{next_action_type::none};
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union data_t
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{
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error_code ec;
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read_args_t read_args;
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write_args_t write_args;
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data_t() noexcept : ec(error_code()) {}
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data_t(error_code ec) noexcept : ec(ec) {}
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data_t(read_args_t args) noexcept : read_args(args) {}
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data_t(write_args_t args) noexcept : write_args(args) {}
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} data_;
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next_action(next_action_type t, data_t data) noexcept : type_(t), data_(data) {}
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};
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} // namespace detail
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} // namespace mysql
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} // namespace boost
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#endif
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