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-rw-r--r--MoonParser/pegtl/internal/string.hpp68
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1// Copyright (c) 2014-2017 Dr. Colin Hirsch and Daniel Frey
2// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
3
4#ifndef TAOCPP_PEGTL_INCLUDE_INTERNAL_STRING_HPP
5#define TAOCPP_PEGTL_INCLUDE_INTERNAL_STRING_HPP
6
7#include <cstring>
8#include <utility>
9
10#include "../config.hpp"
11
12#include "bump_help.hpp"
13#include "result_on_found.hpp"
14#include "skip_control.hpp"
15#include "trivial.hpp"
16
17#include "../analysis/counted.hpp"
18
19namespace tao
20{
21 namespace TAOCPP_PEGTL_NAMESPACE
22 {
23 namespace internal
24 {
25 inline bool unsafe_equals( const char* s, const std::initializer_list< char >& l ) noexcept
26 {
27 return std::memcmp( s, &*l.begin(), l.size() ) == 0;
28 }
29
30 template< char... Cs >
31 struct string;
32
33 template<>
34 struct string<>
35 : trivial< true >
36 {
37 };
38
39 template< char... Cs >
40 struct string
41 {
42 using analyze_t = analysis::counted< analysis::rule_type::ANY, sizeof...( Cs ) >;
43
44 template< typename Input >
45 static bool match( Input& in )
46 {
47 if( in.size( sizeof...( Cs ) ) >= sizeof...( Cs ) ) {
48 if( unsafe_equals( in.current(), { Cs... } ) ) {
49 bump_help< result_on_found::SUCCESS, Input, char, Cs... >( in, sizeof...( Cs ) );
50 return true;
51 }
52 }
53 return false;
54 }
55 };
56
57 template< char... Cs >
58 struct skip_control< string< Cs... > > : std::true_type
59 {
60 };
61
62 } // namespace internal
63
64 } // namespace TAOCPP_PEGTL_NAMESPACE
65
66} // namespace tao
67
68#endif