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NAME

TPath::TypeCheck - applies type constraint on nodes

VERSION

version 1.001

DESCRIPTION

Role of an object that checks the class of a node against the class it knows it can handle.

METHODS

_typecheck

Expects a node. Confesses if the node is of the wrong type.

ATTRIBUTES

node_type

If set on object construction, all nodes handled by the TPath::TypeCheck will have to be of this class or an error will be thrown. Can be used to enforce type safety. The test is only performed on certain gateway methods -- TPath::Expression::select() and TPath::Index::index() -- so little overhead is incurred.

AUTHOR

David F. Houghton <dfhoughton@gmail.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2013 by David F. Houghton.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.