source: NonGTP/Boost/boost/function_output_iterator.hpp @ 857

Revision 857, 1.6 KB checked in by igarcia, 19 years ago (diff)
RevLine 
[857]1// (C) Copyright Jeremy Siek 2001.
2// Distributed under the Boost Software License, Version 1.0. (See
3// accompanying file LICENSE_1_0.txt or copy at
4// http://www.boost.org/LICENSE_1_0.txt)
5
6// Revision History:
7
8// 27 Feb 2001   Jeremy Siek
9//      Initial checkin.
10
11#ifndef BOOST_FUNCTION_OUTPUT_ITERATOR_HPP
12#define BOOST_FUNCTION_OUTPUT_ITERATOR_HPP
13
14#include <iterator>
15
16namespace boost {
17
18  template <class UnaryFunction>
19  class function_output_iterator {
20    typedef function_output_iterator self;
21  public:
22    typedef std::output_iterator_tag iterator_category;
23    typedef void                value_type;
24    typedef void                difference_type;
25    typedef void                pointer;
26    typedef void                reference;
27
28    explicit function_output_iterator() {}
29
30    explicit function_output_iterator(const UnaryFunction& f)
31      : m_f(f) {}
32
33    struct output_proxy {
34      output_proxy(UnaryFunction& f) : m_f(f) { }
35      template <class T> output_proxy& operator=(const T& value) {
36        m_f(value);
37        return *this;
38      }
39      UnaryFunction& m_f;
40    };
41    output_proxy operator*() { return output_proxy(m_f); }
42    self& operator++() { return *this; }
43    self& operator++(int) { return *this; }
44  private:
45    UnaryFunction m_f;
46  };
47
48  template <class UnaryFunction>
49  inline function_output_iterator<UnaryFunction>
50  make_function_output_iterator(const UnaryFunction& f = UnaryFunction()) {
51    return function_output_iterator<UnaryFunction>(f);
52  }
53
54} // namespace boost
55
56#endif // BOOST_FUNCTION_OUTPUT_ITERATOR_HPP
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