EventTypeCode.hpp

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/*
 * This file is part of the DUDS project. It is subject to the BSD-style
 * license terms in the LICENSE file found in the top-level directory of this
 * distribution and at https://github.com/jjackowski/duds/blob/master/LICENSE.
 * No part of DUDS, including this file, may be copied, modified, propagated,
 * or distributed except according to the terms contained in the LICENSE file.
 *
 * Copyright (C) 2020  Jeff Jackowski
 */
#ifndef EVENTTYPECODE_HPP
#define EVENTTYPECODE_HPP

#include <libevdev/libevdev.h>
#include <cstdint>
#include <string>

#ifdef linux
// !@?!#?!#?
#undef linux
#endif

namespace duds { namespace os { namespace linux {

union EventTypeCode {
    struct {
        std::uint16_t type;
        std::uint16_t code;
    };
    std::uint32_t typecode;
    EventTypeCode() = default;
    constexpr EventTypeCode(std::uint16_t t, std::uint16_t c) : type(t), code(c) { }
    std::string typeName() const noexcept;
    std::string typeName(const std::string &unknown) const noexcept;
    std::string codeName() const noexcept;
    std::string codeName(const std::string &unknown) const noexcept;
    constexpr bool operator < (EventTypeCode etc) const {
        return typecode < etc.typecode;
    }
    constexpr bool operator == (EventTypeCode etc) const {
        return typecode == etc.typecode;
    }
    constexpr bool operator != (EventTypeCode etc) const {
        return typecode != etc.typecode;
    }
};

} } }

// hash implementation
namespace std {
    template<> struct hash<duds::os::linux::EventTypeCode> {
        std::size_t operator()(const duds::os::linux::EventTypeCode &etc) const noexcept {
            return etc.typecode;
        }
    };
}

#endif        //  #ifndef EVENTTYPECODE_HPP