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