<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Strict//EN' 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd'> <html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'> <head> <meta http-equiv='Content-Type' content='text/html; charset=utf-8'/> <title>errinfo_at_line</title> <link href='reno.css' type='text/css' rel='stylesheet'/> </head> <body> <div class="body-0"> <div class="body-1"> <div class="body-2"> <div> <div id="boost_logo"> <a href="http://www.boost.org"><img style="border:0" src="../../../boost.png" alt="Boost" width="277" height="86"/></a> </div> <h1>Boost Exception</h1> </div> <!-- Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc. --> <!-- Distributed under the Boost Software License, Version 1.0. (See accompanying --> <!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> <div class="RenoIncludeDIV"><div class="RenoAutoDIV"><h3>errinfo_at_line</h3> </div> <div class="RenoIncludeDIV"><p><span class="RenoEscape">#<!--<wiki>`#</wiki>--></span>include <<span class="RenoLink"><a href="boost_exception_errinfo_at_line_hpp.html">boost/exception/errinfo_at_line.hpp</a></span>></p> <div class="RenoIncludeDIV"><pre>#include <<span class="RenoLink"><a href="boost_exception_error_info_hpp.html">boost/exception/error_info.hpp</a></span>> namespace boost { <span class="RenoIncludeSPAN"> <span class="RenoIncludeSPAN">typedef <span class="RenoLink"><a href="error_info.html">error_info</a></span><struct errinfo_at_line_,int> <span class="RenoLink">errinfo_at_line</span>;</span></span> }</pre> </div></div><p>This type is designed to be used as a standard <span class="RenoLink"><a href="error_info.html">error_info</a></span> instance for transporting a relevant text file line number, for example in parse error exceptions deriving from boost::<span class="RenoLink"><a href="exception.html">exception</a></span>.</p> <h3>Example:</h3> <div class="RenoIncludeDIV"><pre>#include <<span class="RenoLink"><a href="boost_exception_errinfo_api_function_hpp.html">boost/exception/errinfo_api_function.hpp</a></span>> #include <<span class="RenoLink"><a href="boost_exception_errinfo_at_line_hpp.html">boost/exception/errinfo_at_line.hpp</a></span>> #include <<span class="RenoLink"><a href="boost_exception_errinfo_errno_hpp.html">boost/exception/errinfo_errno.hpp</a></span>> #include <<span class="RenoLink"><a href="boost_exception_errinfo_file_handle_hpp.html">boost/exception/errinfo_file_handle.hpp</a></span>> #include <<span class="RenoLink"><a href="boost_exception_errinfo_file_name_hpp.html">boost/exception/errinfo_file_name.hpp</a></span>> #include <<span class="RenoLink"><a href="boost_exception_errinfo_file_open_mode_hpp.html">boost/exception/errinfo_file_open_mode.hpp</a></span>> #include <<span class="RenoLink"><a href="boost_exception_info_hpp.html">boost/exception/info.hpp</a></span>> #include <<span class="RenoLink"><a href="boost_throw_exception_hpp.html">boost/throw_exception.hpp</a></span>> #include <boost/shared_ptr.hpp> #include <boost/weak_ptr.hpp> #include <stdio.h> #include <errno.h> #include <exception> struct error : virtual std::exception, virtual boost::<span class="RenoLink"><a href="exception.html">exception</a></span> { }; struct file_error : virtual error { }; struct file_open_error: virtual file_error { }; struct file_read_error: virtual file_error { }; boost::shared_ptr<FILE> open_file( char const * file, char const * mode ) { if( FILE * f=fopen(file,mode) ) return boost::shared_ptr<FILE>(f,fclose); else <span class="RenoLink"><a href="BOOST_THROW_EXCEPTION.html">BOOST_THROW_EXCEPTION</a></span>( file_open_error() << boost::<span class="RenoLink"><a href="errinfo_api_function.html">errinfo_api_function</a></span>("fopen") << boost::<span class="RenoLink"><a href="errinfo_errno.html">errinfo_errno</a></span>(errno) << boost::<span class="RenoLink"><a href="errinfo_file_name.html">errinfo_file_name</a></span>(file) << boost::<span class="RenoLink"><a href="errinfo_file_open_mode.html">errinfo_file_open_mode</a></span>(mode) ); } size_t read_file( boost::shared_ptr<FILE> const & f, void * buf, size_t size ) { size_t nr=fread(buf,1,size,f.get()); if( ferror(f.get()) ) <span class="RenoLink"><a href="BOOST_THROW_EXCEPTION.html">BOOST_THROW_EXCEPTION</a></span>( file_read_error() << boost::<span class="RenoLink"><a href="errinfo_api_function.html">errinfo_api_function</a></span>("fread") << boost::<span class="RenoLink"><a href="errinfo_errno.html">errinfo_errno</a></span>(errno) << boost::<span class="RenoLink"><a href="errinfo_file_handle.html">errinfo_file_handle</a></span>(f) ); return nr; }</pre> </div></div><div class="RenoAutoDIV"><div class="RenoHR"><hr/></div> See also: <span class="RenoPageList"><a href="boost_exception_errinfo_at_line_hpp.html">boost/exception/errinfo_at_line.hpp</a></span> </div> <!-- Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc. --> <!-- Distributed under the Boost Software License, Version 1.0. (See accompanying --> <!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> <div id="footer"> <p> <a class="logo" href="http://jigsaw.w3.org/css-validator/check/referer"><img class="logo_pic" src="valid-css.png" alt="Valid CSS" height="31" width="88"/></a> <a class="logo" href="http://validator.w3.org/check?uri=referer"><img class="logo_pic" src="valid-xhtml.png" alt="Valid XHTML 1.0" height="31" width="88"/></a> <small>Copyright (c) 2006-2009 by Emil Dotchevski and Reverge Studios, Inc.<br/> Distributed under the <a href="http://www.boost.org/LICENSE_1_0.txt">Boost Software License, Version 1.0</a>.</small> </p> </div> </div> </div> </div> </body> </html>