Function recursive_directory_iterator_construct

src/directory.cpp:1332–1376

//--------------------------------------------------------------------------------------//

BOOST_FILESYSTEM_DECL
void recursive_directory_iterator_construct(recursive_directory_iterator& it, path const& dir_path, directory_options opts, system::error_code* ec)
{
    // At most one of the two options may be specified
    BOOST_ASSERT((opts & (directory_options::follow_directory_symlink | directory_options::_detail_no_follow)) != (directory_options::follow_directory_symlink | directory_options::_detail_no_follow));

    if (ec)
        ec->clear();

    directory_iterator dir_it;
    detail::directory_iterator_construct(dir_it, dir_path, opts, nullptr, ec);
    if ((ec && *ec) || dir_it == directory_iterator())
        return;

    boost::intrusive_ptr< detail::recur_dir_itr_imp > imp;
    if (!ec)
    {
        imp = new detail::recur_dir_itr_imp(opts);
    }
    else
    {
        imp = new (std::nothrow) detail::recur_dir_itr_imp(opts);
        if (BOOST_UNLIKELY(!imp))
        {
            *ec = make_error_code(system::errc::not_enough_memory);
            return;
        }
    }

    try
    {
        imp->m_stack.push_back(std::move(dir_it));
        it.m_imp.swap(imp);
    }
    catch (std::bad_alloc&)
    {
        if (ec)
        {
            *ec = make_error_code(system::errc::not_enough_memory);
            return;
        }

        throw;
    }
}

namespace {