B::Terse - Walk Perl syntax tree, printing terse info about ops
perl -MO=Terse[,OPTIONS] foo.pl
This module prints the contents of the parse tree, but without as much
information as CPAN module B::Debug. For comparison, "print "Hello,
world."" produced 96 lines of output from B::Debug, but only 6 from
B::Terse.
This module is useful for people who are writing their own back end, or who are
learning about the Perl internals. It's not useful to the average programmer.
This version of B::Terse is really just a wrapper that calls B::Concise with the
-terse option. It is provided for compatibility with old scripts (and
habits) but using B::Concise directly is now recommended instead.
For compatibility with the old B::Terse, this module also adds a method named
"terse" to B::OP and B::SV objects. The B::SV method is largely
compatible with the old one, though authors of new software might be advised
to choose a more user-friendly output format. The B::OP "terse"
method, however, doesn't work well. Since B::Terse was first written, much
more information in OPs has migrated to the scratchpad datastructure, but the
"terse" interface doesn't have any way of getting to the correct
pad. As a kludge, the new version will always use the pad for the main
program, but for OPs in subroutines this will give the wrong answer or crash.
The original version of B::Terse was written by Malcolm Beattie,
<
[email protected]>. This wrapper was written by Stephen McCamant,
<
[email protected]>.