/src/Fast-DDS/thirdparty/taocpp-pegtl/pegtl/internal/at.hpp
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1 | | // Copyright (c) 2014-2020 Dr. Colin Hirsch and Daniel Frey |
2 | | // Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/ |
3 | | |
4 | | #ifndef TAO_PEGTL_INTERNAL_AT_HPP |
5 | | #define TAO_PEGTL_INTERNAL_AT_HPP |
6 | | |
7 | | #include "../config.hpp" |
8 | | |
9 | | #include "seq.hpp" |
10 | | #include "skip_control.hpp" |
11 | | #include "trivial.hpp" |
12 | | |
13 | | #include "../apply_mode.hpp" |
14 | | #include "../rewind_mode.hpp" |
15 | | |
16 | | #include "../analysis/generic.hpp" |
17 | | |
18 | | namespace tao |
19 | | { |
20 | | namespace TAO_PEGTL_NAMESPACE |
21 | | { |
22 | | namespace internal |
23 | | { |
24 | | template< typename... Rules > |
25 | | struct at |
26 | | : at< seq< Rules... > > |
27 | | { |
28 | | }; |
29 | | |
30 | | template<> |
31 | | struct at<> |
32 | | : trivial< true > |
33 | | { |
34 | | }; |
35 | | |
36 | | template< typename Rule > |
37 | | struct at< Rule > |
38 | | { |
39 | | using analyze_t = analysis::generic< analysis::rule_type::opt, Rule >; |
40 | | |
41 | | template< apply_mode, |
42 | | rewind_mode, |
43 | | template< typename... > |
44 | | class Action, |
45 | | template< typename... > |
46 | | class Control, |
47 | | typename Input, |
48 | | typename... States > |
49 | | static bool match( Input& in, States&&... st ) |
50 | 0 | { |
51 | 0 | const auto m = in.template mark< rewind_mode::required >(); |
52 | 0 | return Control< Rule >::template match< apply_mode::nothing, rewind_mode::active, Action, Control >( in, st... ); |
53 | 0 | } |
54 | | }; |
55 | | |
56 | | template< typename... Rules > |
57 | | struct skip_control< at< Rules... > > : std::true_type |
58 | | { |
59 | | }; |
60 | | |
61 | | } // namespace internal |
62 | | |
63 | | } // namespace TAO_PEGTL_NAMESPACE |
64 | | |
65 | | } // namespace tao |
66 | | |
67 | | #endif |