59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
//
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// Copyright (c) 2004 Joao Abecasis
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//
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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/include/classic_core.hpp>
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#include <boost/detail/lightweight_test.hpp>
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using namespace BOOST_SPIRIT_CLASSIC_NS;
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void shortest_alternative_parser_test()
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{
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typedef
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shortest_alternative<
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shortest_alternative<
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shortest_alternative<
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strlit<>,
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strlit<> >,
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strlit<> >,
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strlit<> >
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parser_t;
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parser_t short_rule =
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shortest_d[
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str_p("a")
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| str_p("aa")
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| str_p("aaa")
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| str_p("aaaa")
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];
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BOOST_TEST(parse("a", short_rule).full);
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BOOST_TEST(parse("aa", short_rule).length == 1);
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BOOST_TEST(parse("aaa", short_rule).length == 1);
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BOOST_TEST(parse("aaaa", short_rule).length == 1);
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short_rule =
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shortest_d[
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str_p("d")
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| str_p("cd")
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| str_p("bcd")
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| str_p("abcd")
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];
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BOOST_TEST(parse("d", short_rule).full);
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BOOST_TEST(parse("cd", short_rule).full);
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BOOST_TEST(parse("bcd", short_rule).full);
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BOOST_TEST(parse("abcd", short_rule).full);
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}
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int
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main()
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{
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shortest_alternative_parser_test();
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return boost::report_errors();
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}
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