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/**
* Copyright (C) 2024 T. Zachary Laine
*
* Distributed under the Boost Software License, Version 1.0. (See
* accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*/
#include <boost/parser/parser.hpp>
#include <boost/core/lightweight_test.hpp>
namespace bp = boost::parser;
bp::rule<struct seq1_tag, bp::tuple<int, char>> seq1 = "";
bp::rule<struct seq2_tag, bp::tuple<int, char>> seq2 = "";
auto const seq1_def = bp::int_ >> bp::char_('a');
auto const seq2_def = bp::int_ >> bp::char_('b');
BOOST_PARSER_DEFINE_RULES(seq1, seq2);
int main()
{
// These are just some assorted cases that have, or seemed likely to,
// cause problems when an internal failure in an alternative wipes out an
// existing result. This covers all the cases where "if (!success)"
// causes the attribute to be overwritten with a default-constructed
// value.
{
auto const parser =
bp::string("FOO") >> -(bp::string("bar") | bp::string("foo"));
auto result = bp::parse("FOOfoo", parser);
BOOST_TEST(result);
BOOST_TEST(bp::get(*result, bp::llong<0>{}) == std::string("FOO"));
BOOST_TEST(bp::get(*result, bp::llong<1>{}) == std::string("foo"));
}
{
auto const parser = bp::merge
[bp::string("FOO") >> (bp::string("bar") | bp::string("foo"))];
auto result = bp::parse("FOOfoo", parser);
BOOST_TEST(result);
BOOST_TEST(*result == std::string("FOOfoo"));
}
{
auto const parser = bp::merge
[(bp::attr(std::vector<std::string>({"FOO"})) | bp::eps) >>
(bp::repeat(1)[bp::string("foo")] | bp::eps)];
auto result = bp::parse("", parser);
BOOST_TEST(result);
BOOST_TEST(*result);
BOOST_TEST(*result == std::vector<std::string>({"FOO"}));
}
{
auto const parser = bp::merge[seq1 >> (seq2 | seq1)];
auto result = bp::parse("7a9a", parser);
BOOST_TEST(result);
BOOST_TEST(*result == (bp::tuple<int, char>(9, 'a')));
}
return boost::report_errors();
}
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