std.hpp

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// Copyright (C) 2020-2023 Jonathan Müller and lexy contributors
// SPDX-License-Identifier: BSL-1.0
 
#ifndef LEXY_DETAIL_STD_HPP_INCLUDED
#define LEXY_DETAIL_STD_HPP_INCLUDED
 
#include <lexy/_detail/config.hpp>
 
#if defined(__GLIBCXX__)
 
namespace std
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
struct forward_iterator_tag;
struct bidirectional_iterator_tag;
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
 
#elif defined(_LIBCPP_VERSION)
 
_LIBCPP_BEGIN_NAMESPACE_STD
struct forward_iterator_tag;
struct bidirectional_iterator_tag;
_LIBCPP_END_NAMESPACE_STD
 
#else
 
// Forward declaring things in std is not allowed, but I'm willing to take the risk.
 
namespace std
{
struct forward_iterator_tag;
struct bidirectional_iterator_tag;
} // namespace std
 
#endif
 
#endif // LEXY_DETAIL_STD_HPP_INCLUDED