Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: /// \file regex_error.hpp
Chris@16: /// Contains the definition of the regex_error exception class.
Chris@16: //
Chris@16: //  Copyright 2008 Eric Niebler. Distributed under the Boost
Chris@16: //  Software License, Version 1.0. (See accompanying file
Chris@16: //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #ifndef BOOST_XPRESSIVE_REGEX_ERROR_HPP_EAN_10_04_2005
Chris@16: #define BOOST_XPRESSIVE_REGEX_ERROR_HPP_EAN_10_04_2005
Chris@16: 
Chris@16: // MS compatible compilers support #pragma once
Chris@101: #if defined(_MSC_VER)
Chris@16: # pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <string>
Chris@16: #include <stdexcept>
Chris@16: #include <boost/throw_exception.hpp>
Chris@16: #include <boost/current_function.hpp>
Chris@16: #include <boost/exception/exception.hpp>
Chris@16: #include <boost/exception/info.hpp>
Chris@16: #include <boost/xpressive/regex_constants.hpp>
Chris@16: 
Chris@16: //{{AFX_DOC_COMMENT
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: // This is a hack to get Doxygen to show the inheritance relation between
Chris@16: // regex_error and std::runtime_error.
Chris@16: #ifdef BOOST_XPRESSIVE_DOXYGEN_INVOKED
Chris@16: /// INTERNAL ONLY
Chris@16: namespace std
Chris@16: {
Chris@16:     /// INTERNAL ONLY
Chris@16:     struct runtime_error {};
Chris@16: }
Chris@16: #endif
Chris@16: //}}AFX_DOC_COMMENT
Chris@16: 
Chris@16: namespace boost { namespace xpressive
Chris@16: {
Chris@16: 
Chris@16: ////////////////////////////////////////////////////////////////////////////////
Chris@16: //  regex_error
Chris@16: //
Chris@16: /// \brief The class regex_error defines the type of objects thrown as
Chris@16: /// exceptions to report errors during the conversion from a string representing
Chris@16: /// a regular expression to a finite state machine.
Chris@16: struct regex_error
Chris@16:   : std::runtime_error
Chris@16:   , boost::exception
Chris@16: {
Chris@16:     /// Constructs an object of class regex_error.
Chris@16:     /// \param code The error_type this regex_error represents.
Chris@16:     /// \param str The message string of this regex_error.
Chris@16:     /// \post code() == code
Chris@16:     explicit regex_error(regex_constants::error_type code, char const *str = "")
Chris@16:       : std::runtime_error(str)
Chris@16:       , boost::exception()
Chris@16:       , code_(code)
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16:     /// Accessor for the error_type value
Chris@16:     /// \return the error_type code passed to the constructor
Chris@16:     /// \throw nothrow
Chris@16:     regex_constants::error_type code() const
Chris@16:     {
Chris@16:         return this->code_;
Chris@16:     }
Chris@16: 
Chris@16:     /// Destructor for class regex_error
Chris@16:     /// \throw nothrow
Chris@16:     virtual ~regex_error() throw()
Chris@16:     {}
Chris@16: 
Chris@16: private:
Chris@16: 
Chris@16:     regex_constants::error_type code_;
Chris@16: };
Chris@16: 
Chris@16: namespace detail
Chris@16: {
Chris@16:     inline bool ensure_(
Chris@16:         bool cond
Chris@16:       , regex_constants::error_type code
Chris@16:       , char const *msg
Chris@16:       , char const *fun
Chris@16:       , char const *file
Chris@16:       , unsigned long line
Chris@16:     )
Chris@16:     {
Chris@16:         if(!cond)
Chris@16:         {
Chris@16:             #ifndef BOOST_EXCEPTION_DISABLE
Chris@16:             boost::throw_exception(
Chris@16:                 boost::xpressive::regex_error(code, msg)
Chris@16:                     << boost::throw_function(fun)
Chris@16:                     << boost::throw_file(file)
Chris@16:                     << boost::throw_line((int)line)
Chris@16:             );
Chris@16:             #else
Chris@16:             boost::throw_exception(boost::xpressive::regex_error(code, msg));
Chris@16:             #endif
Chris@16:         }
Chris@16:         return true;
Chris@16:     }
Chris@16: }
Chris@16: 
Chris@16: #define BOOST_XPR_ENSURE_(pred, code, msg)                                                          \
Chris@16:     boost::xpressive::detail::ensure_(!!(pred), code, msg, BOOST_CURRENT_FUNCTION, __FILE__, __LINE__)  \
Chris@16:     /**/
Chris@16: 
Chris@16: }} // namespace boost::xpressive
Chris@16: 
Chris@16: #endif