//  boost/catch_exceptions.hpp -----------------------------------------------//

//  Copyright Beman Dawes 1995-2001.  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)

//  See http://www.boost.org/libs/test for documentation.

//  Revision History

//   13 Jun 01 report_exception() made inline. (John Maddock, Jesse Jones)

//   26 Feb 01 Numerous changes suggested during formal review. (Beman)

//   25 Jan 01 catch_exceptions.hpp code factored out of cpp_main.cpp.

//   22 Jan 01 Remove test_tools dependencies to reduce coupling.

//    5 Nov 00 Initial boost version (Beman Dawes)

#ifndef BOOST_CATCH_EXCEPTIONS_HPP

#define BOOST_CATCH_EXCEPTIONS_HPP

//  header dependencies are deliberately restricted to the standard library

//  to reduce coupling to other boost libraries.

#include <string>             // for string

#include <new>                // for bad_alloc

#include <typeinfo>           // for bad_cast, bad_typeid

#include <exception>          // for exception, bad_exception

#include <stdexcept>          // for std exception hierarchy

#include <boost/cstdlib.hpp>  // for exit codes

# if __GNUC__ != 2 || __GNUC_MINOR__ > 96

#   include <ostream>         // for ostream

# else

#   include <iostream> // workaround GNU missing ostream header

# endif

# if defined(__BORLANDC__) && (__BORLANDC__ <= 0x0551)

#   define BOOST_BUILT_IN_EXCEPTIONS_MISSING_WHAT 

# endif

#if defined(MPW_CPLUS) && (MPW_CPLUS <= 0x890)

#   define BOOST_BUILT_IN_EXCEPTIONS_MISSING_WHAT 

    namespace std { class bad_typeid { }; }

# endif

namespace boost

{

  namespace detail

  {

    //  A separate reporting function was requested during formal review.

    inline void report_exception( std::ostream & os, 

                                  const char * name, const char * info )

      { os << "\n** uncaught exception: " << name << " " << info << std::endl; }

  }

  //  catch_exceptions  ------------------------------------------------------//

  template< class Generator >  // Generator is function object returning int

  int catch_exceptions( Generator function_object,

                        std::ostream & out, std::ostream & err )

  {

    int result = 0;               // quiet compiler warnings

    bool exception_thrown = true; // avoid setting result for each excptn type

#ifndef BOOST_NO_EXCEPTIONS

    try

    {

#endif

      result = function_object();

      exception_thrown = false;

#ifndef BOOST_NO_EXCEPTIONS

    }

    //  As a result of hard experience with strangely interleaved output

    //  under some compilers, there is a lot of use of endl in the code below

    //  where a simple '\n' might appear to do.

    //  The rules for catch & arguments are a bit different from function 

    //  arguments (ISO 15.3 paragraphs 18 & 19). Apparently const isn't

    //  required, but it doesn't hurt and some programmers ask for it.

    catch ( const char * ex )

      { detail::report_exception( out, "", ex ); }

    catch ( const std::string & ex )

      { detail::report_exception( out, "", ex.c_str() ); }

    //  std:: exceptions

    catch ( const std::bad_alloc & ex )

      { detail::report_exception( out, "std::bad_alloc:", ex.what() ); }

# ifndef BOOST_BUILT_IN_EXCEPTIONS_MISSING_WHAT

    catch ( const std::bad_cast & ex )

      { detail::report_exception( out, "std::bad_cast:", ex.what() ); }

    catch ( const std::bad_typeid & ex )

      { detail::report_exception( out, "std::bad_typeid:", ex.what() ); }

# else

    catch ( const std::bad_cast & )

      { detail::report_exception( out, "std::bad_cast", "" ); }

    catch ( const std::bad_typeid & )

      { detail::report_exception( out, "std::bad_typeid", "" ); }

# endif

    catch ( const std::bad_exception & ex )

      { detail::report_exception( out, "std::bad_exception:", ex.what() ); }

    catch ( const std::domain_error & ex )

      { detail::report_exception( out, "std::domain_error:", ex.what() ); }

    catch ( const std::invalid_argument & ex )

      { detail::report_exception( out, "std::invalid_argument:", ex.what() ); }

    catch ( const std::length_error & ex )

      { detail::report_exception( out, "std::length_error:", ex.what() ); }

    catch ( const std::out_of_range & ex )

      { detail::report_exception( out, "std::out_of_range:", ex.what() ); }

    catch ( const std::range_error & ex )

      { detail::report_exception( out, "std::range_error:", ex.what() ); }

    catch ( const std::overflow_error & ex )

      { detail::report_exception( out, "std::overflow_error:", ex.what() ); }

    catch ( const std::underflow_error & ex )

      { detail::report_exception( out, "std::underflow_error:", ex.what() ); }

    catch ( const std::logic_error & ex )

      { detail::report_exception( out, "std::logic_error:", ex.what() ); }

    catch ( const std::runtime_error & ex )

      { detail::report_exception( out, "std::runtime_error:", ex.what() ); }

    catch ( const std::exception & ex )

      { detail::report_exception( out, "std::exception:", ex.what() ); }

    catch ( ... )

      { detail::report_exception( out, "unknown exception", "" ); }

#endif // BOOST_NO_EXCEPTIONS

    if ( exception_thrown ) result = boost::exit_exception_failure;

    if ( result != 0 && result != exit_success )

    {

      out << std::endl << "**** returning with error code "

                << result << std::endl;

      err

        << "**********  errors detected; see stdout for details  ***********"

        << std::endl;

    }

#if !defined(BOOST_NO_CPP_MAIN_SUCCESS_MESSAGE)

    else { out << std::flush << "no errors detected" << std::endl; }

#endif

    return result;

  } // catch_exceptions

} // boost

#endif  // BOOST_CATCH_EXCEPTIONS_HPP