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Contents
// Copyright (c) 2014-2022 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
#ifndef TAO_PEGTL_INTERNAL_STRING_HPP
#define TAO_PEGTL_INTERNAL_STRING_HPP
#include <cstring>
#include <utility>
#include "../config.hpp"
#include "bump_help.hpp"
#include "enable_control.hpp"
#include "one.hpp"
#include "result_on_found.hpp"
#include "success.hpp"
#include "../type_list.hpp"
namespace TAO_PEGTL_NAMESPACE::internal
{
[[nodiscard]] inline bool unsafe_equals( const char* s, const std::initializer_list< char >& l ) noexcept
{
return std::memcmp( s, &*l.begin(), l.size() ) == 0;
}
template< char... Cs >
struct string;
template<>
struct string<>
: success
{};
// template< char C >
// struct string
// : one< C >
// {};
template< char... Cs >
struct string
{
using rule_t = string;
using subs_t = empty_list;
template< int Eol >
static constexpr bool can_match_eol = one< result_on_found::success, peek_char, Cs... >::template can_match_eol< Eol >;
template< typename ParseInput >
[[nodiscard]] static bool match( ParseInput& in ) noexcept( noexcept( in.size( 0 ) ) )
{
if( in.size( sizeof...( Cs ) ) >= sizeof...( Cs ) ) {
if( unsafe_equals( in.current(), { Cs... } ) ) {
bump_help< string >( in, sizeof...( Cs ) );
return true;
}
}
return false;
}
};
template< char... Cs >
inline constexpr bool enable_control< string< Cs... > > = false;
} // namespace TAO_PEGTL_NAMESPACE::internal
#endif
Version data entries
13 entries across 13 versions & 1 rubygems