NAME
Pony::Object::Throwable - A base throwable object.
OVERVIEW
Pony::Object::Throwable objects has throw
method which throws an exception.
Exceptions
Do you want to use Pony exceptions in your code? There is nothing easier! Use block try
to wrap code with possible exceptions, block catch
to catch exceptions and finally
to define code, which should be runned after all.
When we talk about exceptions we mean special type of Perl's die
. Base class for all pony-exceptions is Pony::Object::Throwable. It has one method throw
. It should be used on exceptions in the program.
Use :exceptions
(or :try
) param to enable try/catch/finally blocks. Use :noexceptions
(or notry
) param to disable them.
Nested try works for perl-5.14 or higher.
SYNOPSIS
package MyFile {
use Pony::Object qw/:exceptions/;
protected 'file';
protected 'data' => undef;
sub init : Public($this, $file) {
$this->file = $file;
}
sub read : Public($this) {
$this->data = try {
open F, $this->file or
throw Pony::Object::Throwable("Can't find $file.");
local $/;
my $data = <F>;
close F;
return $data;
} catch {
my $e = shift; # get exception object
say "Exception catched!";
say $e->dump();
return undef;
};
}
}
1;
COPYRIGHT AND LICENSE
Copyright (C) 2011 - 2017, Georgy Bazhukov.
This program is free software, you can redistribute it and/or modify it under the terms of the Artistic License version 2.0.