MessageInterfaceBuilder.h

//
// Copyright 2015 - 2024 (C). Alex Robenko. All rights reserved.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
#pragma once
 
#include "comms/details/MessageInterfaceOptionsParser.h"
 
namespace comms
{
 
namespace details
{
 
template <typename... TOptions>
class MessageInterfaceBuilder
{
    using ParsedOptions = MessageInterfaceOptionsParser<TOptions...>;
 
    static_assert((!ParsedOptions::HasVersionInExtraTransportFields) || ParsedOptions::HasExtraTransportFields,
        "comms::option::def::VersionInExtraTransportFields option should not be used "
        "without comms::option::def::ExtraTransportFields.");
 
    static constexpr bool MustHaveVirtualDestructor = 
        (!ParsedOptions::HasNoVirtualDestructor) && 
        (
            ParsedOptions::HasReadIterator ||
            ParsedOptions::HasWriteIterator ||
            ParsedOptions::HasMsgIdInfo ||
            ParsedOptions::HasHandler ||
            ParsedOptions::HasValid ||
            ParsedOptions::HasLength ||
            ParsedOptions::HasRefresh ||
            ParsedOptions::HasName          
        );
 
    using EndianBase = typename ParsedOptions::template BuildEndian<>;
 
    using IdTypeBase = 
        typename ParsedOptions::template BuildMsgIdType<EndianBase>;
 
    using TransportFieldsBase = 
        typename ParsedOptions::template BuildExtraTransportFields<IdTypeBase>;
 
    using VersionInTransportFieldsBase = 
        typename ParsedOptions::template BuildVersionInExtraTransportFields<TransportFieldsBase>;
 
    using IdInfoBase = 
        typename ParsedOptions::template BuildMsgIdInfo<VersionInTransportFieldsBase>;
 
    using ReadBase = 
        typename ParsedOptions::template BuildReadBase<IdInfoBase>;        
 
    using WriteBase = 
        typename ParsedOptions::template BuildWriteBase<ReadBase>;           
    
    using ValidBase = 
        typename ParsedOptions::template BuildValid<WriteBase>;           
 
    using LengthBase = 
        typename ParsedOptions::template BuildLength<ValidBase>;     
            
    using HandlerBase = 
        typename ParsedOptions::template BuildHandler<LengthBase>;     
 
    using RefreshBase = 
        typename ParsedOptions::template BuildRefresh<HandlerBase>;     
 
    using NameBase = 
        typename ParsedOptions::template BuildName<RefreshBase>;     
 
    using VirtDestructorBase = 
        typename comms::util::LazyShallowDeepConditional<
            MustHaveVirtualDestructor
        >::template Type<
            MessageInterfaceVirtDestructorBase,
            comms::util::TypeDeepWrap,
            NameBase
        >;    
public:
    using Options = ParsedOptions;
    using Type = VirtDestructorBase;
};
 
template <typename... TOptions>
using MessageInterfaceBuilderT =
    typename MessageInterfaceBuilder<TOptions...>::Type;
 
}  // namespace details
 
}  // namespace comms