concepts.hpp

Go to the documentation of this file.

#ifndef STLAB_ITERATOR_CONCEPTS_HPP
#define STLAB_ITERATOR_CONCEPTS_HPP

 
#define STLAB_CONCEPT(x) STLAB_PRIVATE_CONCEPT_##x
 
#if __cpp_has_concepts
 
#include <iterator>
 
#include <stlab/config.hpp>
#include <stlab/iterator/set_next.hpp>
 
namespace stlab {
STLAB_VERSION_NAMESPACE_BEGIN()
 

 
template <class I>
concept forward_node_iterator = std::forward_iterator<I> && requires(I i) {
    { stlab::unsafe::set_next(i, i) };
};

 
STLAB_VERSION_NAMESPACE_END()
} // namespace stlab
 
#define STLAB_PRIVATE_CONCEPT_FORWARD_NODE_ITERATOR stlab::forward_node_iterator
 
#else
 
#define STLAB_PRIVATE_CONCEPT_FORWARD_NODE_ITERATOR typename
 
#endif
 
#endif