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99 lines
3.3 KiB
C++
Executable file
99 lines
3.3 KiB
C++
Executable file
// Copyright (c) 2014-2022 Dr. Colin Hirsch and Daniel Frey
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// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
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#ifndef TAO_PEGTL_NORMAL_HPP
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#define TAO_PEGTL_NORMAL_HPP
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#include <string>
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#include <type_traits>
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#include <utility>
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#include "apply_mode.hpp"
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#include "config.hpp"
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#include "match.hpp"
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#include "parse_error.hpp"
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#include "rewind_mode.hpp"
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#include "internal/enable_control.hpp"
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#include "internal/has_match.hpp"
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#if defined( __cpp_exceptions )
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#include "demangle.hpp"
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#else
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#include "internal/dependent_false.hpp"
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#include <exception>
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#endif
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namespace TAO_PEGTL_NAMESPACE
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{
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template< typename Rule >
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struct normal
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{
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static constexpr bool enable = internal::enable_control< Rule >;
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template< typename ParseInput, typename... States >
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static void start( const ParseInput& /*unused*/, States&&... /*unused*/ ) noexcept
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{}
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template< typename ParseInput, typename... States >
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static void success( const ParseInput& /*unused*/, States&&... /*unused*/ ) noexcept
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{}
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template< typename ParseInput, typename... States >
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static void failure( const ParseInput& /*unused*/, States&&... /*unused*/ ) noexcept
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{}
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template< typename ParseInput, typename... States >
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[[noreturn]] static void raise( const ParseInput& in, States&&... /*unused*/ )
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{
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#if defined( __cpp_exceptions )
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throw parse_error( "parse error matching " + std::string( demangle< Rule >() ), in );
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#else
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static_assert( internal::dependent_false< Rule >, "exception support required for normal< Rule >::raise()" );
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(void)in;
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std::terminate();
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#endif
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}
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template< template< typename... > class Action,
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typename Iterator,
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typename ParseInput,
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typename... States >
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static auto apply( const Iterator& begin, const ParseInput& in, States&&... st ) noexcept( noexcept( Action< Rule >::apply( std::declval< const typename ParseInput::action_t& >(), st... ) ) )
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-> decltype( Action< Rule >::apply( std::declval< const typename ParseInput::action_t& >(), st... ) )
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{
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const typename ParseInput::action_t action_input( begin, in );
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return Action< Rule >::apply( action_input, st... );
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}
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template< template< typename... > class Action,
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typename ParseInput,
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typename... States >
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static auto apply0( const ParseInput& /*unused*/, States&&... st ) noexcept( noexcept( Action< Rule >::apply0( st... ) ) )
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-> decltype( Action< Rule >::apply0( st... ) )
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{
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return Action< Rule >::apply0( st... );
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}
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template< 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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if constexpr( internal::has_match< bool, Rule, A, M, Action, Control, ParseInput, States... > ) {
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return Action< Rule >::template match< Rule, A, M, Action, Control >( in, st... );
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}
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else {
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return TAO_PEGTL_NAMESPACE::match< Rule, A, M, Action, Control >( in, st... );
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}
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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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