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Contents
// Copyright (c) 2014-2022 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
#ifndef TAO_PEGTL_INTERNAL_TRY_CATCH_TYPE_HPP
#define TAO_PEGTL_INTERNAL_TRY_CATCH_TYPE_HPP
#if !defined( __cpp_exceptions )
#error "Exception support required for tao/pegtl/internal/try_catch_type.hpp"
#else
#include <type_traits>
#include "../config.hpp"
#include "enable_control.hpp"
#include "seq.hpp"
#include "success.hpp"
#include "../apply_mode.hpp"
#include "../rewind_mode.hpp"
#include "../type_list.hpp"
namespace TAO_PEGTL_NAMESPACE::internal
{
template< typename Exception, typename... Rules >
struct try_catch_type
: try_catch_type< Exception, seq< Rules... > >
{};
template< typename Exception >
struct try_catch_type< Exception >
: success
{};
template< typename Exception, typename Rule >
struct try_catch_type< Exception, Rule >
{
using rule_t = try_catch_type;
using subs_t = type_list< Rule >;
template< apply_mode A,
rewind_mode M,
template< typename... >
class Action,
template< typename... >
class Control,
typename ParseInput,
typename... States >
[[nodiscard]] static bool match( ParseInput& in, States&&... st )
{
auto m = in.template mark< M >();
using m_t = decltype( m );
try {
return m( Control< Rule >::template match< A, m_t::next_rewind_mode, Action, Control >( in, st... ) );
}
catch( const Exception& ) {
return false;
}
}
};
template< typename Exception, typename... Rules >
inline constexpr bool enable_control< try_catch_type< Exception, Rules... > > = false;
} // namespace TAO_PEGTL_NAMESPACE::internal
#endif
#endif
Version data entries
13 entries across 13 versions & 1 rubygems