Re: Proposal: A block between "try" and "catch".

From:

Carl Barron <cbarron413@adelphia.net>

Newsgroups:

comp.lang.c++.moderated

Date:

Fri, 6 Jun 2008 09:57:43 CST

Message-ID:

<060620080203550057%cbarron413@adelphia.net>

In article
<24ebd49b-e871-47ae-b9e9-1a41c1b7035a@m45g2000hsb.googlegroups.com>,
Lucian Radu Teodorescu <Luc.Teodorescu@gmail.com> wrote:

Now, to solve this problem (let exceptions from do_something_else() be
thrown outside f), I need to make a real complex logic:

void f()
{
     bool rethrowRangeError = false;
     try {
         Object ob("data"); // May throw range_error

         try {
             // This may also throw range_error,
             // but I don't want to catch this one
             do_something_else(ob, "other data"); // Ooops, "ob"
doesn't exist!!!
         } catch (range_error e) {
             rethrowRangeError = true;
             throw;
         }
     } catch (range_error e)
     {
         if ( rethrowRangeError ) throw;
         else {...}
     }
}

    well lets get smaller:
    bool do_rethrow = false;
    try
    {

       Object obj("data");
       do_rethrow = true; // ct0r did not throw
       do_something_else(ob,"something");
    }
    catch (range_error &e)
    {
       if(do_rethrow)
          throw;
       else
       {
          ....
       }
    }

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