span.hpp

Go to the documentation of this file.

#pragma once
 
/// @file userver/storages/postgres/io/span.hpp
/// @brief std::span I/O support
/// @ingroup userver_postgres_parse_and_format
 
#include <span>
 
#include <userver/storages/postgres/io/array_types.hpp>
 
USERVER_NAMESPACE_BEGIN
 
namespace storages::postgres::io::traits {
 
template <typename T, std::size_t Extent>
struct IsCompatibleContainer<std::span<T, Extent>> : std::true_type {};
 
namespace detail {
 
struct SpanHasNoParser;
 
}  // namespace detail
 
/// Override the array Input<T> = ArrayBinaryParser<T> that would otherwise be
/// auto-selected via IsCompatibleContainer.
template <typename T, std::size_t Extent>
struct Input<std::span<T, Extent>> {
    using type = detail::SpanHasNoParser;
};
 
}  // namespace storages::postgres::io::traits
 
USERVER_NAMESPACE_END