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src/stl/_incrementable_iterator.hpp

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#ifndef _INSTIGATE_OPEN_SOURCE_INTERNAL_HEADER_IN_CONCEPT
#error This is an internal header file used to implement Instigate STL.\
        It should never be included directly by a program.
#endif

#ifndef INSTIGATE_STL_INCREMENTABLE_ITERATOR_HPP
#define INSTIGATE_STL_INCREMENTABLE_ITERATOR_HPP

// Headers from this project
#include "iterator_interface.hpp"

// Headers from other project
#include <generic/_assignable.hpp>

// Headers from standard project

// Forward declarations
namespace instigate {
        namespace stl {
                namespace incrementable_iterator {
                        struct tag;
                        template<typename T> struct interface;
                        template<typename T> struct requirements;
                }
        } 
}

struct instigate::stl::incrementable_iterator::tag
        : instigate::generic::assignable::tag
{
};

namespace instigate {
        namespace stl {
                template <typename T>  struct category_mapping;
        }
}

template<typename T> 
struct instigate::stl::incrementable_iterator::interface 
        : instigate::generic::assignable::interface<T>
{      
        typedef typename instigate::stl::category_mapping<T>::category 
                iterator_category;

        static void increment(T& a)
        {
                instigate::stl::interface<T>::increment(a);
        }
};
 
template<typename T>
struct instigate::stl::incrementable_iterator::requirements 
        : instigate::generic::assignable::requirements<T>
{      
        static void require_nested_typename_iterator_category()
        {
                typedef typename instigate::stl::incrementable_iterator::
                        interface<T>::iterator_category d;
        }

        static void require_increment(T& a)
        {
                instigate::stl::incrementable_iterator::interface<T>::
			increment(a);
        }

        requirements()
        {
                (void)require_nested_typename_iterator_category;
                (void)require_increment;                
        }
};
 
// vim:et:tabstop=8:shiftwidth=8:cindent:fo=croq:textwidth=80:

#endif // INSTIGATE_STL_INCREMENTABLE_ITERATOR_HPP

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