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/*=============================================================================
Copyright (c) 2001-2015 Joel de Guzman
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/detail/lightweight_test.hpp>
#include <boost/spirit/home/x3.hpp>
#include <boost/fusion/include/vector.hpp>
#include <boost/fusion/include/at.hpp>
#include <string>
#include <cstring>
#include <iostream>
#include "test.hpp"
namespace x3 = boost::spirit::x3;
int got_it = 0;
struct my_rule_class
{
template <typename Iterator, typename Exception, typename Context>
x3::error_handler_result
on_error(Iterator&, Iterator const& last, Exception const& x, Context const&)
{
std::cout
<< "Error! Expecting: "
<< x.which()
<< ", got: \""
<< std::string(x.where(), last)
<< "\""
<< std::endl
;
return x3::error_handler_result::fail;
}
template <typename Iterator, typename Attribute, typename Context>
inline void
on_success(Iterator const&, Iterator const&, Attribute&, Context const&)
{
++got_it;
}
};
int
main()
{
using spirit_test::test_attr;
using spirit_test::test;
using namespace boost::spirit::x3::ascii;
using boost::spirit::x3::rule;
using boost::spirit::x3::int_;
using boost::spirit::x3::lit;
{ // show that ra = rb and ra %= rb works as expected
rule<class a, int> ra;
rule<class b, int> rb;
int attr;
auto ra_def = (ra %= int_);
BOOST_TEST(test_attr("123", ra_def, attr));
BOOST_TEST(attr == 123);
auto rb_def = (rb %= ra_def);
BOOST_TEST(test_attr("123", rb_def, attr));
BOOST_TEST(attr == 123);
auto rb_def2 = (rb = ra_def);
BOOST_TEST(test_attr("123", rb_def2, attr));
BOOST_TEST(attr == 123);
}
{ // show that ra %= rb works as expected with semantic actions
rule<class a, int> ra;
rule<class b, int> rb;
int attr;
auto f = [](auto&){};
auto ra_def = (ra %= int_[f]);
BOOST_TEST(test_attr("123", ra_def, attr));
BOOST_TEST(attr == 123);
auto ra_def2 = (rb = (ra %= int_[f]));
BOOST_TEST(test_attr("123", ra_def2, attr));
BOOST_TEST(attr == 123);
}
{ // std::string as container attribute with auto rules
std::string attr;
// test deduced auto rule behavior
auto text = rule<class text, std::string>()
= +(!char_(')') >> !char_('>') >> char_);
attr.clear();
BOOST_TEST(test_attr("x", text, attr));
BOOST_TEST(attr == "x");
}
{ // error handling
auto r = rule<my_rule_class, char const*>()
= '(' > int_ > ',' > int_ > ')';
BOOST_TEST(test("(123,456)", r));
BOOST_TEST(!test("(abc,def)", r));
BOOST_TEST(!test("(123,456]", r));
BOOST_TEST(!test("(123;456)", r));
BOOST_TEST(!test("[123,456]", r));
BOOST_TEST(got_it == 1);
}
{
typedef boost::variant<double, int> v_type;
auto r1 = rule<class r1, v_type>()
= int_;
v_type v;
BOOST_TEST(test_attr("1", r1, v) && v.which() == 1 &&
boost::get<int>(v) == 1);
typedef boost::optional<int> ov_type;
auto r2 = rule<class r2, ov_type>()
= int_;
ov_type ov;
BOOST_TEST(test_attr("1", r2, ov) && ov && boost::get<int>(ov) == 1);
}
// test handling of single element fusion sequences
{
using boost::fusion::vector;
using boost::fusion::at_c;
auto r = rule<class r, vector<int>>()
= int_;
vector<int> v(0);
BOOST_TEST(test_attr("1", r, v) && at_c<0>(v) == 1);
}
{ // attribute compatibility test
using boost::spirit::x3::rule;
using boost::spirit::x3::int_;
auto const expr = int_;
short i;
BOOST_TEST(test_attr("1", expr, i) && i == 1); // ok
const rule< class int_rule, int > int_rule( "int_rule" );
auto const int_rule_def = int_;
auto const start = int_rule = int_rule_def;
short j;
BOOST_TEST(test_attr("1", start, j) && j == 1); // error
}
return boost::report_errors();
}
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