50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
/*=============================================================================
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Copyright (c) 2019 Nikita Kniazev
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (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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=============================================================================*/
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#include <boost/spirit/home/x3.hpp>
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// Check that `BOOST_SPIRIT_INSTANTIATE` instantiates `parse_rule` with proper
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// types when a rule has no attribute.
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namespace unused_attr {
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namespace x3 = boost::spirit::x3;
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// skipper must has no attribute, checks `parse` and `skip_over`
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using skipper_type = x3::rule<class skipper_r>;
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const skipper_type skipper;
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BOOST_SPIRIT_DECLARE(skipper_type)
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// the `unused_type const` must have the same effect as no attribute
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using skipper2_type = x3::rule<class skipper2_r, x3::unused_type const>;
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const skipper2_type skipper2;
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BOOST_SPIRIT_DECLARE(skipper2_type)
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// grammar must has no attribute, checks `parse` and `phrase_parse`
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using grammar_type = x3::rule<class grammar_r>;
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const grammar_type grammar;
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BOOST_SPIRIT_DECLARE(grammar_type)
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}
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// Check instantiation when rule has an attribute.
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namespace used_attr {
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namespace x3 = boost::spirit::x3;
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using skipper_type = x3::rule<class skipper_r>;
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const skipper_type skipper;
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BOOST_SPIRIT_DECLARE(skipper_type)
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using grammar_type = x3::rule<class grammar_r, int>;
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const grammar_type grammar;
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BOOST_SPIRIT_DECLARE(grammar_type)
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}
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