//

// Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)

//

// Distributed under the Boost Software License, Version 1.0. (See accompanying

// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

//

// Official repository: https://github.com/boostorg/json

//

#ifndef BOOST_JSON_DETAIL_IMPL_STACK_IPP

#define BOOST_JSON_DETAIL_IMPL_STACK_IPP

#include <boost/json/detail/stack.hpp>

namespace boost {

namespace json {

namespace detail {

stack::

~stack()

{

    if(base_ != buf_)

        sp_->deallocate(

            base_, cap_);

}

stack::

stack(

    storage_ptr sp,

    unsigned char* buf,

    std::size_t buf_size) noexcept

    : sp_(std::move(sp))

    , cap_(buf_size)

    , base_(buf)

    , buf_(buf)

{

}

void

stack::

reserve(std::size_t n)

{

    if(cap_ >= n)

        return;

    auto const base = static_cast<

        unsigned char*>(sp_->allocate(n));

    if(base_)

    {

        if(size_ > 0)

            std::memcpy(base, base_, size_);

        if(base_ != buf_)

            sp_->deallocate(base_, cap_);

    }

    base_ = base;

    cap_ = n;

}

} // detail

} // namespace json

} // namespace boost

#endif