geode/codegen/Broma/PEGTL-3.2.7/include/tao/pegtl/internal/at.hpp

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2022-07-30 12:24:03 -04:00
// 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_AT_HPP
#define TAO_PEGTL_INTERNAL_AT_HPP
#include "../config.hpp"
#include "enable_control.hpp"
#include "seq.hpp"
#include "success.hpp"
#include "../apply_mode.hpp"
#include "../rewind_mode.hpp"
#include "../type_list.hpp"
namespace TAO_PEGTL_NAMESPACE::internal
{
template< typename... Rules >
struct at
: at< seq< Rules... > >
{};
template<>
struct at<>
: success
{};
template< typename Rule >
struct at< Rule >
{
using rule_t = at;
using subs_t = type_list< Rule >;
template< apply_mode,
rewind_mode,
template< typename... >
class Action,
template< typename... >
class Control,
typename ParseInput,
typename... States >
[[nodiscard]] static bool match( ParseInput& in, States&&... st )
{
const auto m = in.template mark< rewind_mode::required >();
return Control< Rule >::template match< apply_mode::nothing, rewind_mode::active, Action, Control >( in, st... );
}
};
template< typename... Rules >
inline constexpr bool enable_control< at< Rules... > > = false;
} // namespace TAO_PEGTL_NAMESPACE::internal
#endif