IgnoreInvalid.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/Assert.h"
#include "comms/ErrorStatus.h"
 
namespace comms
{
 
namespace field
{
 
namespace adapter
{
 
template <typename TBase>
class IgnoreInvalid : public TBase
{
    using BaseImpl = TBase;
public:
 
    using ValueType = typename BaseImpl::ValueType;
 
    IgnoreInvalid() = default;
 
    explicit IgnoreInvalid(const ValueType& val)
      : BaseImpl(val)
    {
    }
 
    explicit IgnoreInvalid(ValueType&& val)
      : BaseImpl(std::move(val))
    {
    }
 
    IgnoreInvalid(const IgnoreInvalid&) = default;
    IgnoreInvalid(IgnoreInvalid&&) = default;
    IgnoreInvalid& operator=(const IgnoreInvalid&) = default;
    IgnoreInvalid& operator=(IgnoreInvalid&&) = default;
 
    template <typename TIter>
    comms::ErrorStatus read(TIter& iter, std::size_t len)
    {
        BaseImpl tmp;
        auto es = tmp.read(iter, len);
        if (es != comms::ErrorStatus::Success) {
            return es;
        }
 
        if (tmp.valid()) {
            static_cast<BaseImpl&>(*this) = std::move(tmp);
        }
 
        return comms::ErrorStatus::Success;
    }
 
    template <typename TIter>
    void readNoStatus(TIter& iter)
    {
        BaseImpl tmp;
        tmp.readNoStatus(iter);
 
        if (tmp.valid()) {
            static_cast<BaseImpl&>(*this) = std::move(tmp);
        }
    }
};
 
}  // namespace adapter
 
}  // namespace field
 
}  // namespace comms