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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_ONE_HPP
#define TAO_PEGTL_INTERNAL_ONE_HPP
#include <cstddef>
#include "../config.hpp"
#include "any.hpp"
#include "bump_help.hpp"
#include "enable_control.hpp"
#include "failure.hpp"
#include "result_on_found.hpp"
#include "../type_list.hpp"
namespace TAO_PEGTL_NAMESPACE::internal
{
template< result_on_found R, typename Peek, typename Peek::data_t... Cs >
struct one
{
using peek_t = Peek;
using data_t = typename Peek::data_t;
using rule_t = one;
using subs_t = empty_list;
[[nodiscard]] static constexpr bool test( const data_t c ) noexcept
{
return ( ( c == Cs ) || ... ) == bool( R );
}
template< int Eol >
static constexpr bool can_match_eol = test( Eol );
template< typename ParseInput >
[[nodiscard]] static bool match( ParseInput& in ) noexcept( noexcept( Peek::peek( in ) ) )
{
if( const auto t = Peek::peek( in ) ) {
if( test( t.data ) ) {
bump_help< one >( in, t.size );
return true;
}
}
return false;
}
};
template< typename Peek >
struct one< result_on_found::success, Peek >
: failure
{};
template< typename Peek >
struct one< result_on_found::failure, Peek >
: any< Peek >
{};
template< result_on_found R, typename Peek, typename Peek::data_t... Cs >
inline constexpr bool enable_control< one< R, Peek, Cs... > > = false;
} // namespace TAO_PEGTL_NAMESPACE::internal
#endif
Version data entries
11 entries across 11 versions & 1 rubygems