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B::Terse(3pm)          Perl Programmers Reference Guide          B::Terse(3pm)




NAME

       B::Terse - Walk Perl syntax tree, printing terse info about ops


SYNOPSIS

               perl -MO=Terse[,OPTIONS] foo.pl


DESCRIPTION

       This module prints the contents of the parse tree, but without as much
       information as 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.


AUTHOR

       The original version of B::Terse was written by Malcolm Beattie,
       <mbeattie@sable.ox.ac.uk>. This wrapper was written by Stephen
       McCamant, <smcc@MIT.EDU>.



perl v5.24.0                      2015-10-14                     B::Terse(3pm)

perl 5.24 - Generated Thu Nov 3 16:05:44 CDT 2016
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