Name

Unexpected::TraitFor::Throwing - Detects and throws exceptions

Synopsis

   use Moo;

   with 'Unexpected::TraitFor::Throwing';

Description

Detects and throws exceptions

Configuration and Environment

Modifies BUILD in the consuming class. Caches the new exception for use by the previous_exception attribute in the next exception thrown

Requires the consuming class to have the class method is_one_of_us

Defines the following list of attributes;

previous_exception

May hold a reference to the previous exception in this thread

Subroutines/Methods

BUILD

After construction the current exception is cached so that it can become the previous exception the next time an exception is thrown

caught

   $exception_object_ref = Unexpected->caught( @optional_args );

Catches and returns a thrown exception or generates a new exception if $EVAL_ERROR has been set. Returns either an exception object or undefined

clone

   $cloned_exception_object_ref = $exception_object_ref->clone( $args );

Returns a clone of the invocant. The optional $args hash reference mutates the returned clone

throw

   Unexpected->throw 'Path [_1] not found', args => [ 'pathname' ];

Create (or re-throw) an exception. If the passed parameter is a blessed reference it is re-thrown. If a single scalar is passed it is taken to be an error message, a new exception is created with all other parameters taking their default values. If more than one parameter is passed the it is treated as a list and used to instantiate the new exception. The 'error' parameter must be provided in this case

throw_on_error

   Unexpected->throw_on_error( @optional_args );

Calls "caught" passing in the options @args and if there was an exception "throw"s it otherwise returns undefined

Diagnostics

None

Dependencies

namespace::autoclean

Moo::Role

Unexpected::Types

Incompatibilities

There are no known incompatibilities in this module

Bugs and Limitations

There are no known bugs in this module. Please report problems to the address below. Patches are welcome

Acknowledgements

Larry Wall - For the Perl programming language

Author

Peter Flanigan, <pjfl@cpan.org>

License and Copyright

Copyright (c) 2017 Peter Flanigan. All rights reserved

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic

This program is distributed in the hope that it will be useful, but WITHOUT WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE

cpanm Unexpected

perl -MCPAN -e shell
install Unexpected