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/*=============================================================================
Copyright (c) 2001-2015 Joel de Guzman
Copyright (c) 2013-2014 Agustin Berge
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/spirit/home/x3.hpp>
#include <string>
#include <cstring>
#include <iostream>
#include "test.hpp"
int
main()
{
using spirit_test::test_attr;
using spirit_test::test;
using namespace boost::spirit::x3::ascii;
using boost::spirit::x3::any_parser;
using boost::spirit::x3::make_context;
using boost::spirit::x3::lit;
using boost::spirit::x3::unused_type;
using boost::spirit::x3::phrase_parse;
using boost::spirit::x3::skip_flag;
using boost::spirit::x3::skipper_tag;
using boost::spirit::x3::_attr;
typedef char const* iterator_type;
typedef decltype(make_context<skipper_tag>(space)) context_type;
{ // basic tests
auto a = lit('a');
auto b = lit('b');
auto c = lit('c');
{
any_parser<iterator_type> start =
*(a | b | c);
BOOST_TEST(test("abcabcacb", start));
}
}
{ // basic tests w/ skipper
auto a = lit('a');
auto b = lit('b');
auto c = lit('c');
{
any_parser<iterator_type, unused_type, context_type> start =
*(a | b | c);
BOOST_TEST(test(" a b c a b c a c b ", start, space));
}
}
{ // basic tests w/ skipper but no final post-skip
any_parser<iterator_type, unused_type, context_type> a = lit('a');
any_parser<iterator_type, unused_type, context_type> b = lit('b');
any_parser<iterator_type, unused_type, context_type> c = lit('c');
{
any_parser<iterator_type, unused_type, context_type> start = *(a | b) >> c;
char const *s1 = " a b a a b b a c ... "
, *const e1 = s1 + std::strlen(s1);
BOOST_TEST(phrase_parse(s1, e1, start, space, skip_flag::dont_post_skip)
&& s1 == e1 - 5);
}
}
{ // context tests
char ch;
any_parser<iterator_type, char> a = alpha;
// this semantic action requires both the context and attribute
//!!auto f = [&](auto&, char attr){ ch = attr; };
//!!BOOST_TEST(test("x", a[f]));
//!!BOOST_TEST(ch == 'x');
// the semantic action may have the context passed
auto f2 = [&](auto&){ ch = 'y'; };
BOOST_TEST(test("x", a[f2]));
BOOST_TEST(ch == 'y');
// the semantic action may optionally not have any arguments at all
auto f3 = [&]{ ch = 'z'; };
BOOST_TEST(test("x", a[f3]));
BOOST_TEST(ch == 'z');
BOOST_TEST(test_attr("z", a, ch)); // attribute is given.
BOOST_TEST(ch == 'z');
}
{ // auto rules tests
char ch = '\0';
any_parser<iterator_type, char> a = alpha;
auto f = [&](auto& ctx){ ch = _attr(ctx); };
BOOST_TEST(test("x", a[f]));
BOOST_TEST(ch == 'x');
ch = '\0';
BOOST_TEST(test_attr("z", a, ch)); // attribute is given.
BOOST_TEST(ch == 'z');
ch = '\0';
BOOST_TEST(test("x", a[f]));
BOOST_TEST(ch == 'x');
ch = '\0';
BOOST_TEST(test_attr("z", a, ch)); // attribute is given.
BOOST_TEST(ch == 'z');
}
{ // auto rules tests: allow stl containers as attributes to
// sequences (in cases where attributes of the elements
// are convertible to the value_type of the container or if
// the element itself is an stl container with value_type
// that is convertible to the value_type of the attribute).
std::string s;
auto f = [&](auto& ctx){ s = _attr(ctx); };
{
any_parser<iterator_type, std::string> r
= char_ >> *(',' >> char_)
;
BOOST_TEST(test("a,b,c,d,e,f", r[f]));
BOOST_TEST(s == "abcdef");
}
{
any_parser<iterator_type, std::string> r
= char_ >> *(',' >> char_);
s.clear();
BOOST_TEST(test("a,b,c,d,e,f", r[f]));
BOOST_TEST(s == "abcdef");
}
{
any_parser<iterator_type, std::string> r
= char_ >> char_ >> char_ >> char_ >> char_ >> char_;
s.clear();
BOOST_TEST(test("abcdef", r[f]));
BOOST_TEST(s == "abcdef");
}
}
return boost::report_errors();
}
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