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mikhail_beris
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Implement to_upper transformer and basic transformation infrastructure.
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6 files changed

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‎boost/network/message.hpp

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@@ -80,5 +80,8 @@ namespace boost { namespace network {
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#include <boost/network/message/wrappers.hpp>
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// pull in wrappers header file
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#include <boost/network/message/transformers.hpp>
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// pull in transformer header file
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#endif // __NETWORK_MESSAGE_HPP__
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‎boost/network/message/transformers.hpp

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// Copyright Dean Michael Berris 2007.
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// Distributed under the Boost Software License, Version 1.0.
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// (See 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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#ifndef __NETWORK_MESSAGE_TRANSFORMERS_HPP__
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#define __NETWORK_MESSAGE_TRANSFORMERS_HPP__
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/** transformers.hpp
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*
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* Pulls in all the transformers files.
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*/
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#include <boost/network/message/transformers/selectors.hpp>
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#include <boost/network/message/transformers/to_upper.hpp>
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namespace boost { namespace network {
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namespace impl {
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template <class Algorithm, class Selector>
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struct get_real_algorithm {
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typedef typename Algorithm::type<Selector> type;
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};
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template <class Algorithm, class Selector>
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struct transform_impl : public get_real_algorithm<Algorithm, Selector>::type { };
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}; // namspace impl
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template <class Algorithm, class Selector>
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inline impl::transform_impl<Algorithm, Selector>
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transform(Algorithm, Selector) {
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return impl::transform_impl<Algorithm, Selector>();
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};
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template <class Tag, class Algorithm, class Selector>
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inline basic_message<Tag> &
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operator<< (basic_message<Tag> & msg_,
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impl::transform_impl<Algorithm, Selector>
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const & transformer) {
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transformer(msg_);
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return msg_;
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};
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}; // namespace network
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}; // namespace boost
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#endif // __NETWORK_MESSAGE_TRANSFORMERS_HPP__

‎boost/network/message/transformers/selectors.hpp

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// Copyright Dean Michael Berris 2007.
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// Distributed under the Boost Software License, Version 1.0.
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// (See 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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#ifndef __NETWORK_MESSAGE_TRANSFORMERS_SELECTORS_HPP__
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#define __NETWORK_MESSAGE_TRANSFORMERS_SELECTORS_HPP__
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namespace boost { namespace network {
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namespace selectors {
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struct source_selector { };
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struct destination_selector { };
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}; // namespace selectors
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extern selectors::source_selector source_;
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extern selectors::destination_selector destination_;
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}; // namespace network
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}; // namespace boost
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#endif // __NETWORK_MESSAGE_TRANSFORMERS_SELECTORS_HPP__
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‎boost/network/message/transformers/to_upper.hpp

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// Copyright Dean Michael Berris 2007.
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// Distributed under the Boost Software License, Version 1.0.
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// (See 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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#ifndef __NETWORK_MESSAGE_TRANSFORMERS_TO_UPPER_HPP__
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#define __NETWORK_MESSAGE_TRANSFORMERS_TO_UPPER_HPP__
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#include <boost/algorithm/string.hpp>
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/** to_upper.hpp
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*
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* Implements the to_upper transformer. This applies
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* the to_upper string algorithm to a string, which
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* is selected by the appropriate selector.
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*
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* This defines a type, to be applied using template
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* metaprogramming on the selected string target.
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*/
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namespace boost { namespace network {
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namespace impl {
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template <class Selector>
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struct to_upper_transformer { };
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template <>
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struct to_upper_transformer<selectors::source_selector> {
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template <class Tag>
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void operator() (basic_message<Tag> & message_) const {
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boost::to_upper(message_.source());
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};
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protected:
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~to_upper_transformer() { };
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};
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template <>
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struct to_upper_transformer<selectors::destination_selector> {
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template <class Tag>
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void operator() (basic_message<Tag> & message_) const {
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boost::to_upper(message_.destination());
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};
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protected:
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~to_upper_transformer() { };
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};
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}; // namespace impl
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struct to_upper_placeholder {
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template <class Selector>
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struct type : public impl::to_upper_transformer<Selector> { };
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} ;
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extern to_upper_placeholder to_upper_;
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}; // namespace network
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}; // namespace boost
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#endif // __NETWORK_MESSAGE_TRANSFORMERS_TO_UPPER_HPP__
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‎libs/network/test/Jamfile.v2

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;
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unit-test message_test : message_test.cpp ;
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unit-test message_transform_test : message_transform_test.cpp ;

‎libs/network/test/message_transform_test.cpp

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// Copyright Dean Michael Berris 2007.
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// Distributed under the Boost Software License, Version 1.0.
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// (See 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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#define BOOST_TEST_MODULE message test
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#include <boost/test/unit_test.hpp>
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#include <boost/network.hpp>
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#include <algorithm>
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BOOST_AUTO_TEST_CASE ( message_transform_tolower ) {
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using namespace boost::network;
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message msg;
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msg << source("me");
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BOOST_CHECK_EQUAL ( source(msg), "me" );
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msg << transform(to_upper_, source_);
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BOOST_CHECK_EQUAL ( source(msg), "ME" );
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};

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