Sha256: 9e569a35b8386a5694160c09b6e6e074402743736948fc6fc0cbe474f54ec963
Contents?: true
Size: 1.21 KB
Versions: 13
Compression:
Stored size: 1.21 KB
Contents
// Copyright (c) 2016-2022 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
#ifndef TAO_PEGTL_INTERNAL_ISTREAM_READER_HPP
#define TAO_PEGTL_INTERNAL_ISTREAM_READER_HPP
#include <istream>
#if defined( __cpp_exceptions )
#include <system_error>
#else
#include <cstdio>
#include <exception>
#endif
#include "../config.hpp"
namespace TAO_PEGTL_NAMESPACE::internal
{
struct istream_reader
{
explicit istream_reader( std::istream& s ) noexcept
: m_istream( s )
{}
[[nodiscard]] std::size_t operator()( char* buffer, const std::size_t length )
{
m_istream.read( buffer, std::streamsize( length ) );
if( const auto r = m_istream.gcount() ) {
return std::size_t( r );
}
if( m_istream.eof() ) {
return 0;
}
#if defined( __cpp_exceptions )
const auto ec = errno;
throw std::system_error( ec, std::system_category(), "std::istream::read() failed" );
#else
std::fputs( "std::istream::read() failed\n", stderr );
std::terminate();
#endif
}
std::istream& m_istream;
};
} // namespace TAO_PEGTL_NAMESPACE::internal
#endif
Version data entries
13 entries across 13 versions & 1 rubygems