40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
// Copyright (c) 2019-2021 Dr. Colin Hirsch and Daniel Frey
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
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#ifndef TAO_PEGTL_CHANGE_ACTION_HPP
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#define TAO_PEGTL_CHANGE_ACTION_HPP
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#include <type_traits>
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#include "apply_mode.hpp"
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#include "config.hpp"
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#include "nothing.hpp"
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#include "rewind_mode.hpp"
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namespace TAO_PEGTL_NAMESPACE
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{
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template< template< typename... > class NewAction >
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struct change_action
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: maybe_nothing
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{
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template< typename Rule,
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apply_mode A,
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rewind_mode M,
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template< typename... >
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class Action,
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template< typename... >
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class Control,
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typename ParseInput,
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typename... States >
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[[nodiscard]] static bool match( ParseInput& in, States&&... st )
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{
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static_assert( !std::is_same_v< Action< void >, NewAction< void > >, "old and new action class templates are identical" );
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return Control< Rule >::template match< A, M, NewAction, Control >( in, st... );
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}
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};
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} // namespace TAO_PEGTL_NAMESPACE
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#endif
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