Devel::REPL::Plugin::B::Concise

git-svn-id: http://dev.catalyst.perl.org/repos/bast/trunk/Devel-REPL@4327 bd8105ee-0ff8-0310-8827-fb3f25b6796d

diff --git a/lib/Devel/REPL/Plugin/B/Concise.pm b/lib/Devel/REPL/Plugin/B/Concise.pm
new file mode 100644 (file)
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+++ b/lib/Devel/REPL/Plugin/B/Concise.pm
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+#!/usr/bin/perl
+
+package Devel::REPL::Plugin::B::Concise;
+use Devel::REPL::Plugin;
+
+use B::Concise ();
+
+B::Concise::compileOpts(qw(-nobanner));
+
+use namespace::clean -except => [ 'meta' ];
+
+with qw(Devel::REPL::Plugin::Turtles);
+
+sub AFTER_PLUGIN {
+  my $self = shift;
+
+  my $prefix = $self->default_command_prefix; 
+
+  $self->add_turtles_matcher(qr/^
+    \#(concise) \s+
+    ( (?:\-\w+\s+)* ) # options for concise
+    (.*) # the code
+    /x);
+}
+
+sub expr_command_concise {
+  my ( $self, $eval, $opts, $code ) = @_;
+
+  die unless $code;
+
+  my $sub = $self->compile($code, no_mangling => 1);
+
+  open my $fh, ">", \my $out;
+  {
+    local *STDOUT = $fh;
+    B::Concise::compile((split /\s+/, $opts), $sub)->();
+  }
+
+  return $out;
+}
+
+__PACKAGE__
+
+__END__
+
+=pod
+
+=head1 NAME
+
+Devel::REPL::Plugin::B::Concise - B::Concise dumping of expression optrees
+
+=head1 SYNOPSIS
+
+  repl> #concise -exec -terse {
+  > foo => foo(),
+  > }
+  COP (0x138b1e0) nextstate 
+  OP (0x13bd280) pushmark 
+  SVOP (0x138c6a0) const  PV (0xbbab50) "foo" 
+  OP (0x13bbae0) pushmark 
+  SVOP (0x13bcee0) gv  GV (0xbbb250) *Devel::REPL::Plugin::B::Concise::foo 
+  UNOP (0x13890a0) entersub [1] 
+  LISTOP (0x13ba020) anonhash 
+  UNOP (0x5983d0) leavesub [1] 
+
+=head1 DESCRIPTION
+
+This plugin provides a C<concise> command that uses L<B::Concise> to dump
+optrees of expressions.
+
+The code is not actually executed, which means that when used with
+L<Deve::REPL::Plugin::OutputCache> there is .
+
+The command takes the same options as L<B::Concise/compile>, e.g. C<-basic> or
+C<-exec> to determine the dump order, C<-debug>, C<-concise> and C<-terse> to
+determine the formatting, etc.
+
+=head1 AUTHOR
+
+Yuval Kogman E<lt>nothingmuch@woobling.orgE<gt>
+
+=cut
+
+