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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_RULE_CONJUNCTION_HPP
#define TAOCPP_PEGTL_INCLUDE_INTERNAL_RULE_CONJUNCTION_HPP
#include "../apply_mode.hpp"
#include "../config.hpp"
#include "../rewind_mode.hpp"
namespace tao
{
namespace TAOCPP_PEGTL_NAMESPACE
{
namespace internal
{
template< typename... Rules >
struct rule_conjunction;
template<>
struct rule_conjunction<>
{
template< apply_mode A,
rewind_mode M,
template< typename... > class Action,
template< typename... > class Control,
typename Input,
typename... States >
static bool match( Input&, States&&... )
{
return true;
}
};
template< typename... Rules >
struct rule_conjunction
{
template< apply_mode A,
rewind_mode M,
template< typename... > class Action,
template< typename... > class Control,
typename Input,
typename... States >
static bool match( Input& in, States&&... st )
{
#ifdef __cpp_fold_expressions
return ( Control< Rules >::template match< A, M, Action, Control >( in, st... ) && ... );
#else
bool result = true;
using swallow = bool[];
(void)swallow{ result = result && Control< Rules >::template match< A, M, Action, Control >( in, st... )... };
return result;
#endif
}
};
} // namespace internal
} // namespace TAOCPP_PEGTL_NAMESPACE
} // namespace tao
#endif
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