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lib/Crypt/RSA/Errorhandler.pm  view on Meta::CPAN

Crypt::RSA::Errorhandler - Error handling mechanism for Crypt::RSA.

=head1 SYNOPSIS

    package Foo;

    use Crypt::RSA::Errorhandler;
    @ISA = qw(Crypt::RSA::Errorhandler);
    
    sub alive { 
        ..
        ..
        return 
        $self->error ("Awake, awake! Ring the alarum bell. \
                       Murther and treason!", $dagger) 
            if $self->murdered($king);
    }


    package main; 

    use Foo;
    my $foo = new Foo;
    $foo->alive($king) or print $foo->errstr(); 
        # prints "Awake, awake! ... "

=head1 DESCRIPTION 

Crypt::RSA::Errorhandler encapsulates the error handling mechanism used
by the modules in Crypt::RSA bundle. Crypt::RSA::Errorhandler doesn't
have a constructor and is meant to be inherited. The derived modules use
its two methods, error() and errstr(), to communicate error messages to
the caller.