[boost] Re: BOOST_TRY like macros: time to add them?

From: Pavel Vozenilek (pavel_vozenilek_at_[hidden])
Date: 2004-03-05 14:31:11

After discussion on this topic (very helpful), I suggest
to place following code into <boost/throw_exception.hpp>:

#include <boost/detail/workaround.hpp>
...

#if !(defined BOOST_NO_EXCEPTIONS)
#    define BOOST_TRY { try
#    define BOOST_CATCH(x) catch(x)
#    define BOOST_RETHROW throw
#    define BOOST_CATCH_END  }
#else
#    if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
#        define BOOST_TRY { if ("")
#        define BOOST_CATCH(x) else if (!"")
#    else
#        define BOOST_TRY if (true)
#        define BOOST_CATCH else if (false)
#    endif
#    define BOOST_RETHROW
#    define BOOST_CATCH_END }
#endif

These macros are NOT intended as recomended practice for users.
They exist only to avoid having similar macros in Circular Buffer,
Indexed Set and Serialization each.

These macros:
- do not produce warnings (VC/Intel/BCB) with or w/o exceptions enabled,
- work within if/else statement,
- are hopefully ugly enough so users will prefere RAII in application code,
- do not conflict within Boost (1.31).

As they are written for "internal purpose" only they do not need
to be oficially documented, IMO.

/Pavel