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- package B::Terse;
-
- our $VERSION = '1.02';
-
- use strict;
- use B qw(class);
- use B::Asmdata qw(@specialsv_name);
- use B::Concise qw(concise_subref set_style_standard);
- use Carp;
-
- sub terse {
- my ($order, $subref) = @_;
- set_style_standard("terse");
- if ($order eq "exec") {
- concise_subref('exec', $subref);
- } else {
- concise_subref('basic', $subref);
- }
-
- }
-
- sub compile {
- my @args = @_;
- my $order = @args ? shift(@args) : "";
- $order = "-exec" if $order eq "exec";
- unshift @args, $order if $order ne "";
- B::Concise::compile("-terse", @args);
- }
-
- sub indent {
- my $level = @_ ? shift : 0;
- return " " x $level;
- }
-
- # Don't use this, at least on OPs in subroutines: it has no way of
- # getting to the pad, and will give wrong answers or crash.
- sub B::OP::terse {
- carp "B::OP::terse is deprecated; use B::Concise instead";
- B::Concise::b_terse(@_);
- }
-
- sub B::SV::terse {
- my($sv, $level) = (@_, 0);
- my %info;
- B::Concise::concise_sv($sv, \%info);
- my $s = B::Concise::fmt_line(\%info, "#svclass~(?((#svaddr))?)~#svval", 0);
- print indent($level), $s, "\n";
- }
-
- sub B::NULL::terse {
- my ($sv, $level) = @_;
- print indent($level);
- printf "%s (0x%lx)\n", class($sv), $$sv;
- }
-
- sub B::SPECIAL::terse {
- my ($sv, $level) = @_;
- print indent($level);
- printf "%s #%d %s\n", class($sv), $$sv, $specialsv_name[$$sv];
- }
-
- 1;
-
- __END__
-
- =head1 NAME
-
- B::Terse - Walk Perl syntax tree, printing terse info about ops
-
- =head1 SYNOPSIS
-
- perl -MO=Terse[,OPTIONS] foo.pl
-
- =head1 DESCRIPTION
-
- This version of B::Terse is really just a wrapper that calls B::Concise
- with the B<-terse> option. It is provided for compatibility with old scripts
- (and habits) but using B::Concise directly is now recommended instead.
-
- For compatiblilty with the old B::Terse, this module also adds a
- method named C<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 C<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 C<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.
-
- =head1 AUTHOR
-
- The original version of B::Terse was written by Malcolm Beattie,
- E<lt>mbeattie@sable.ox.ac.ukE<gt>. This wrapper was written by Stephen
- McCamant, E<lt>smcc@MIT.EDUE<gt>.
-
- =cut
-