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Contents
// Copyright (c) 2017-2020 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
#ifndef TAO_JSON_PEGTL_INTERNAL_IF_APPLY_HPP
#define TAO_JSON_PEGTL_INTERNAL_IF_APPLY_HPP
#include "../config.hpp"
#include "apply_single.hpp"
#include "skip_control.hpp"
#include "../analysis/counted.hpp"
#include "../apply_mode.hpp"
#include "../rewind_mode.hpp"
namespace TAO_JSON_PEGTL_NAMESPACE::internal
{
template< typename Rule, typename... Actions >
struct if_apply
{
using analyze_t = typename Rule::analyze_t;
template< apply_mode A,
rewind_mode M,
template< typename... >
class Action,
template< typename... >
class Control,
typename Input,
typename... States >
[[nodiscard]] static bool match( Input& in, States&&... st )
{
if constexpr( ( A == apply_mode::action ) && ( sizeof...( Actions ) != 0 ) ) {
using action_t = typename Input::action_t;
auto m = in.template mark< rewind_mode::required >();
if( Control< Rule >::template match< apply_mode::action, rewind_mode::active, Action, Control >( in, st... ) ) {
const action_t i2( m.iterator(), in );
return m( ( apply_single< Actions >::match( i2, st... ) && ... ) );
}
return false;
}
else {
return Control< Rule >::template match< A, M, Action, Control >( in, st... );
}
}
};
template< typename Rule, typename... Actions >
inline constexpr bool skip_control< if_apply< Rule, Actions... > > = true;
} // namespace TAO_JSON_PEGTL_NAMESPACE::internal
#endif
Version data entries
24 entries across 24 versions & 1 rubygems