Razor2::Errorhandler(3)                    User Contributed Perl Documentation


NAME
       Razor::Errorhandler - Error handling mechanism for Razor.

SYNOPSIS
           package Foo;

           use Razor::Errorhandler;
           @ISA = qw(Razor::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! ... "

DESCRIPTION
       Razor::Errorhandler encapsulates the error handling mechanism used by
       the modules in Razor bundle. Razor::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.

       When a method of the derived module fails, it calls $self->error() and
       returns  to the caller. The error message passed to error() is made
       available to the caller through the errstr() accessor. error() also
       accepts a list of sensitive data that it wipes out (undef'es) before
       returning.

       The caller should never call errstr() to check for errors. errstr()
       should be called only when a method indicates (usually through an undef
       return value) that an error has occured. This is because errstr() is
       never overwritten and will always contain a value after the occurance
       of first error.

METHODS
       error($mesage, ($wipeme, $wipemetoo))
           The first argument to error() is $message which is placed in
           $self->{errstr} and the remaining arguments are interpretted as
           variables containing sensitive data that are wiped out from the
           memory. error() always returns undef.

       errstr()
           errstr() is an accessor method for $self->{errstr}.

AUTHOR
       Vipul Ved Prakash, <mail@vipul.net>

SEE ALSO
       Razor::Client(3)

perl v5.40.0                      2024-09-01           Razor2::Errorhandler(3)