1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
/*=============================================================================
Copyright (c) 2019 Nikita Kniazev
Use, modification and distribution is subject to 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>
// Check that `BOOST_SPIRIT_INSTANTIATE` instantiates `parse_rule` with proper
// types when a rule has no attribute.
namespace unused_attr {
namespace x3 = boost::spirit::x3;
// skipper must has no attribute, checks `parse` and `skip_over`
using skipper_type = x3::rule<class skipper_r>;
const skipper_type skipper;
BOOST_SPIRIT_DECLARE(skipper_type)
// the `unused_type const` must have the same effect as no attribute
using skipper2_type = x3::rule<class skipper2_r, x3::unused_type const>;
const skipper2_type skipper2;
BOOST_SPIRIT_DECLARE(skipper2_type)
// grammar must has no attribute, checks `parse` and `phrase_parse`
using grammar_type = x3::rule<class grammar_r>;
const grammar_type grammar;
BOOST_SPIRIT_DECLARE(grammar_type)
}
// Check instantiation when rule has an attribute.
namespace used_attr {
namespace x3 = boost::spirit::x3;
using skipper_type = x3::rule<class skipper_r>;
const skipper_type skipper;
BOOST_SPIRIT_DECLARE(skipper_type)
using grammar_type = x3::rule<class grammar_r, int, true>;
const grammar_type grammar;
BOOST_SPIRIT_DECLARE(grammar_type)
}
|
