41 lines
1.2 KiB
C++
41 lines
1.2 KiB
C++
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// Copyright (c) 2009-2016 Vladimir Batov.
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
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#ifndef BOOST_CONVERT_LEXICAL_CAST_HPP
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#define BOOST_CONVERT_LEXICAL_CAST_HPP
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#include <boost/lexical_cast.hpp>
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namespace boost { namespace cnv
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{
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struct lexical_cast;
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}}
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/// @brief boost::lexical_cast-based converter
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/// @details The purpose of the converter is to
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/// * Make use of the boost::lexical_cast functionality and performance that many people have become
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/// accustomed to and comfortable with;
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/// * Demonstrate how existing independent conversion/transformation-related facilities might be
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// incorporated in to the Boost.Convert framework.
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///
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/// The converter can easily replace boost::lexical_cast, adding flexibility and convenience.
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struct boost::cnv::lexical_cast
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{
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template<typename TypeOut, typename TypeIn>
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void
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operator()(TypeIn const& value_in, boost::optional<TypeOut>& result_out) const
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{
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try
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{
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result_out = boost::lexical_cast<TypeOut>(value_in);
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}
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catch (boost::bad_lexical_cast const&)
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{
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}
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}
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};
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#endif // BOOST_CONVERT_LEXICAL_CAST_HPP
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