66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
// Copyright Abel Sinkovics (abel@sinkovics.hu) 2015.
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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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#include <boost/metaparse/transform_error.hpp>
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#include <boost/metaparse/start.hpp>
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#include <boost/metaparse/string.hpp>
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#include <boost/metaparse/reject.hpp>
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#include <boost/metaparse/lit_c.hpp>
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#include <boost/metaparse/get_position.hpp>
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#include <boost/mpl/assert.hpp>
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#include <boost/type_traits.hpp>
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#include "test_case.hpp"
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using boost::metaparse::reject;
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using boost::metaparse::get_position;
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namespace
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{
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struct new_message
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{
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typedef new_message type;
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};
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struct change_message
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{
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typedef change_message type;
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template <class E>
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struct apply : reject<new_message, get_position<E> > {};
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};
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}
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BOOST_METAPARSE_TEST_CASE(transform_error)
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{
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using boost::metaparse::transform_error;
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using boost::metaparse::start;
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using boost::metaparse::string;
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using boost::metaparse::lit_c;
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using boost::is_same;
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typedef string<'H','e','l','l','o'> s;
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// test_transform_error_does_not_change_accept
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BOOST_MPL_ASSERT((
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is_same<
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lit_c<'H'>::apply<s, start>::type,
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transform_error<lit_c<'H'>, change_message>::apply<s, start>::type
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>
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));
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// test_transform_is_called
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BOOST_MPL_ASSERT((
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is_same<
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reject<new_message, start>,
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transform_error<lit_c<'x'>, change_message>::apply<s, start>::type
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>
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));
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}
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