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89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
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// 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_INTERNAL_UNTIL_HPP
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#define TAO_PEGTL_INTERNAL_UNTIL_HPP
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#include "../config.hpp"
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#include "bytes.hpp"
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#include "enable_control.hpp"
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#include "eof.hpp"
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#include "not_at.hpp"
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#include "seq.hpp"
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#include "star.hpp"
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#include "../apply_mode.hpp"
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#include "../rewind_mode.hpp"
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#include "../type_list.hpp"
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namespace TAO_PEGTL_NAMESPACE::internal
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{
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template< typename Cond, typename... Rules >
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struct until
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: until< Cond, seq< Rules... > >
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{};
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template< typename Cond >
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struct until< Cond >
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{
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using rule_t = until;
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using subs_t = type_list< Cond >;
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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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auto m = in.template mark< M >();
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while( !Control< Cond >::template match< A, rewind_mode::required, Action, Control >( in, st... ) ) {
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if( in.empty() ) {
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return false;
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}
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in.bump();
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}
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return m( true );
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}
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};
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template< typename Cond, typename Rule >
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struct until< Cond, Rule >
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{
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using rule_t = until;
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using subs_t = type_list< Cond, Rule >;
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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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auto m = in.template mark< M >();
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using m_t = decltype( m );
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while( !Control< Cond >::template match< A, rewind_mode::required, Action, Control >( in, st... ) ) {
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if( !Control< Rule >::template match< A, m_t::next_rewind_mode, Action, Control >( in, st... ) ) {
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return false;
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}
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}
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return m( true );
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}
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};
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template< typename Cond, typename... Rules >
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inline constexpr bool enable_control< until< Cond, Rules... > > = false;
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} // namespace TAO_PEGTL_NAMESPACE::internal
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#endif
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