Perl represents programs internally as a tree of opcodes. To execute a
program, it walks this tree, performing each operation as it encounters
it. The B family of modules allows you to examine (and in some cases,
manipulate) this optree on programs *even as they run*.
B::XPath allows you to use XPath syntax to select ops in the optree.
Perl 5.6 or greater (maybe 5.8; I don't know)
Class::XPath
Scalar::Util
Test::Simple (for testing only)
A working knowledge of XPath and courage to read B.pm
COPYRIGHT
---------
Copyright 2006 chromatic. You may use, distribute, and modify this code
under the same terms as Perl 5.8.x itself.
