Chris@16: // (C) Copyright Jeremy Siek 2001.
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: // Revision History:
Chris@16: 
Chris@16: // 27 Feb 2001   Jeremy Siek
Chris@16: //      Initial checkin.
Chris@16: 
Chris@16: #ifndef BOOST_FUNCTION_OUTPUT_ITERATOR_HPP
Chris@16: #define BOOST_FUNCTION_OUTPUT_ITERATOR_HPP
Chris@16: 
Chris@16: #include <iterator>
Chris@16: 
Chris@16: namespace boost {
Chris@101: namespace iterators {
Chris@16: 
Chris@16:   template <class UnaryFunction>
Chris@16:   class function_output_iterator {
Chris@16:     typedef function_output_iterator self;
Chris@16:   public:
Chris@16:     typedef std::output_iterator_tag iterator_category;
Chris@16:     typedef void                value_type;
Chris@16:     typedef void                difference_type;
Chris@16:     typedef void                pointer;
Chris@16:     typedef void                reference;
Chris@16: 
Chris@16:     explicit function_output_iterator() {}
Chris@16: 
Chris@16:     explicit function_output_iterator(const UnaryFunction& f)
Chris@16:       : m_f(f) {}
Chris@16: 
Chris@16:     struct output_proxy {
Chris@16:       output_proxy(UnaryFunction& f) : m_f(f) { }
Chris@16:       template <class T> output_proxy& operator=(const T& value) {
Chris@101:         m_f(value);
Chris@101:         return *this;
Chris@16:       }
Chris@16:       UnaryFunction& m_f;
Chris@16:     };
Chris@16:     output_proxy operator*() { return output_proxy(m_f); }
Chris@101:     self& operator++() { return *this; }
Chris@16:     self& operator++(int) { return *this; }
Chris@16:   private:
Chris@16:     UnaryFunction m_f;
Chris@16:   };
Chris@16: 
Chris@16:   template <class UnaryFunction>
Chris@16:   inline function_output_iterator<UnaryFunction>
Chris@16:   make_function_output_iterator(const UnaryFunction& f = UnaryFunction()) {
Chris@16:     return function_output_iterator<UnaryFunction>(f);
Chris@16:   }
Chris@16: 
Chris@101: } // namespace iterators
Chris@101: 
Chris@101: using iterators::function_output_iterator;
Chris@101: using iterators::make_function_output_iterator;
Chris@101: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif // BOOST_FUNCTION_OUTPUT_ITERATOR_HPP