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// Copyright (c) 2014-2017 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
#ifndef TAOCPP_PEGTL_INCLUDE_INTERNAL_NOT_AT_HPP
#define TAOCPP_PEGTL_INCLUDE_INTERNAL_NOT_AT_HPP
#include "../config.hpp"
#include "rule_conjunction.hpp"
#include "skip_control.hpp"
#include "trivial.hpp"
#include "../apply_mode.hpp"
#include "../rewind_mode.hpp"
#include "../analysis/generic.hpp"
namespace tao
{
namespace TAOCPP_PEGTL_NAMESPACE
{
namespace internal
{
template< typename... Rules >
struct not_at;
template<>
struct not_at<>
: trivial< false >
{
};
template< typename... Rules >
struct not_at
{
using analyze_t = analysis::generic< analysis::rule_type::OPT, Rules... >;
template< apply_mode,
rewind_mode,
template< typename... > class Action,
template< typename... > class Control,
typename Input,
typename... States >
static bool match( Input& in, States&&... st )
{
const auto m = in.template mark< rewind_mode::REQUIRED >();
return !rule_conjunction< Rules... >::template match< apply_mode::NOTHING, rewind_mode::ACTIVE, Action, Control >( in, st... );
}
};
template< typename... Rules >
struct skip_control< not_at< Rules... > > : std::true_type
{
};
} // namespace internal
} // namespace TAOCPP_PEGTL_NAMESPACE
} // namespace tao
#endif
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