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75 lines
1.7 KiB
C++
Executable file
75 lines
1.7 KiB
C++
Executable file
// Copyright (c) 2020-2022 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_CONTRIB_PRINT_HPP
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#define TAO_PEGTL_CONTRIB_PRINT_HPP
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#include <ostream>
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#include "../config.hpp"
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#include "../demangle.hpp"
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#include "../type_list.hpp"
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#include "../visit.hpp"
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namespace TAO_PEGTL_NAMESPACE
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{
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namespace internal
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{
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template< typename Name >
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struct print_names
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{
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static void visit( std::ostream& os )
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{
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os << demangle< Name >() << '\n';
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}
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};
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template< typename Name >
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struct print_debug
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{
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static void visit( std::ostream& os )
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{
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const auto first = demangle< Name >();
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os << first << '\n';
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const auto second = demangle< typename Name::rule_t >();
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if( first != second ) {
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os << " (aka) " << second << '\n';
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}
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print_subs( os, typename Name::subs_t() );
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os << '\n';
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}
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private:
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template< typename... Rules >
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static void print_subs( std::ostream& os, type_list< Rules... > /*unused*/ )
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{
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( print_sub< Rules >( os ), ... );
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}
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template< typename Rule >
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static void print_sub( std::ostream& os )
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{
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os << " (sub) " << demangle< Rule >() << '\n';
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}
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};
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} // namespace internal
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template< typename Grammar >
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void print_names( std::ostream& os )
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{
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visit< Grammar, internal::print_names >( os );
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}
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template< typename Grammar >
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void print_debug( std::ostream& os )
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{
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visit< Grammar, internal::print_debug >( os );
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}
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} // namespace TAO_PEGTL_NAMESPACE
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#endif
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