57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
// Copyright (c) 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_CONTRIB_CHECK_BYTES_HPP
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#define TAO_PEGTL_CONTRIB_CHECK_BYTES_HPP
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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 "../nothing.hpp"
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#include "../rewind_mode.hpp"
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#if defined( __cpp_exceptions )
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#include "../parse_error.hpp"
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#else
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#include <cstdio>
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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< std::size_t Maximum >
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struct check_bytes
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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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static bool match( ParseInput& in, States&&... st )
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{
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const auto* start = in.current();
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if( TAO_PEGTL_NAMESPACE::match< Rule, A, M, Action, Control >( in, st... ) ) {
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if( std::size_t( in.current() - start ) > Maximum ) {
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#if defined( __cpp_exceptions )
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throw TAO_PEGTL_NAMESPACE::parse_error( "maximum allowed rule consumption exceeded", in );
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#else
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std::fputs( "maximum allowed rule consumption exceeded\n", stderr );
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std::terminate();
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#endif
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}
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return true;
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}
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return false;
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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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