spirit/test/x3/plus.cpp

141 lines
3.7 KiB
C++

/*=============================================================================
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 <string>
#include <vector>
#include <boost/detail/lightweight_test.hpp>
#include <boost/spirit/home/x3.hpp>
#include <boost/fusion/include/vector.hpp>
#include <string>
#include <iostream>
#include "test.hpp"
#include "utils.hpp"
struct x_attr
{
};
namespace boost { namespace spirit { namespace x3 { namespace traits
{
template <>
struct container_value<x_attr>
{
typedef char type; // value type of container
};
template <>
struct push_back_container<x_attr>
{
static bool call(x_attr& /*c*/, char /*val*/)
{
// push back value type into container
return true;
}
};
}}}}
int
main()
{
using spirit_test::test;
using spirit_test::test_attr;
using boost::spirit::x3::char_;
using boost::spirit::x3::alpha;
using boost::spirit::x3::upper;
using boost::spirit::x3::space;
using boost::spirit::x3::digit;
//~ using boost::spirit::x3::no_case;
using boost::spirit::x3::int_;
using boost::spirit::x3::omit;
using boost::spirit::x3::lit;
//~ using boost::spirit::x3::_1;
using boost::spirit::x3::lexeme;
{
BOOST_TEST(test("aaaaaaaa", +char_));
BOOST_TEST(test("a", +char_));
BOOST_TEST(!test("", +char_));
BOOST_TEST(test("aaaaaaaa", +alpha));
BOOST_TEST(!test("aaaaaaaa", +upper));
}
{
BOOST_TEST(test(" a a aaa aa", +char_, space));
BOOST_TEST(test("12345 678 9 ", +digit, space));
}
//~ {
//~ BOOST_TEST(test("aBcdeFGH", no_case[+char_]));
//~ BOOST_TEST(test("a B cde FGH ", no_case[+char_], space));
//~ }
{
std::vector<int> v;
BOOST_TEST(test_attr("123 456 789 10", +int_, v, space) && 4 == v.size() &&
v[0] == 123 && v[1] == 456 && v[2] == 789 && v[3] == 10);
}
{
std::vector<std::string> v;
BOOST_TEST(test_attr("a b c d", +lexeme[+alpha], v, space) && 4 == v.size() &&
v[0] == "a" && v[1] == "b" && v[2] == "c" && v[3] == "d");
}
{
BOOST_TEST(test("Kim Kim Kim", +lit("Kim"), space));
}
// $$$ Fixme $$$
/*{
// The following 2 tests show that omit does not inhibit explicit attributes
std::string s;
BOOST_TEST(test_attr("bbbb", omit[+char_('b')], s) && s == "bbbb");
s.clear();
BOOST_TEST(test_attr("b b b b ", omit[+char_('b')], s, space) && s == "bbbb");
}*/
{ // actions
std::string v;
auto f = [&](auto& ctx){ v = _attr(ctx); };
BOOST_TEST(test("bbbb", (+char_)[f]) && 4 == v.size() &&
v[0] == 'b' && v[1] == 'b' && v[2] == 'b' && v[3] == 'b');
}
{ // more actions
std::vector<int> v;
auto f = [&](auto& ctx){ v = _attr(ctx); };
BOOST_TEST(test("1 2 3", (+int_)[f], space) && 3 == v.size() &&
v[0] == 1 && v[1] == 2 && v[2] == 3);
}
{ // attribute customization
x_attr x;
test_attr("abcde", +char_, x);
}
// single-element fusion vector tests
{
boost::fusion::vector<std::string> fs;
BOOST_TEST((test_attr("12345", +char_, fs))); // ok
BOOST_TEST(boost::fusion::at_c<0>(fs) == "12345");
}
{ // test move only types
std::vector<move_only> v;
BOOST_TEST(test_attr("sss", +synth_move_only, v));
BOOST_TEST_EQ(v.size(), 3);
}
return boost::report_errors();
}