CompletionDriver::Methods which currently only works on classnames

[p5sagit/Devel-REPL.git] / lib / Devel / REPL / Plugin / CompletionDriver / Methods.pm

diff --git a/lib/Devel/REPL/Plugin/CompletionDriver/Methods.pm b/lib/Devel/REPL/Plugin/CompletionDriver/Methods.pm
new file mode 100644 (file)
index 0000000..14e0fcc
--- /dev/null
+++ b/lib/Devel/REPL/Plugin/CompletionDriver/Methods.pm
@@ -0,0 +1,48 @@
+package Devel::REPL::Plugin::CompletionDriver::Methods;
+use Devel::REPL::Plugin;
+use namespace::clean -except => [ 'meta' ];
+
+around complete => sub {
+  my $orig = shift;
+  my ($self, $text, $document) = @_;
+
+  my $last = $self->last_ppi_element($document);
+  my $incomplete = '';
+
+  # handle an incomplete method name, and back up to the ->
+  if ($last->isa('PPI::Token::Word')) {
+      my $previous = $last->sprevious_sibling
+        or return $orig->(@_);
+      $previous->isa('PPI::Token::Operator') && $previous->content eq '->'
+        or return $orig->(@_);
+      $incomplete = $last->content;
+      $last = $previous;
+  }
+
+  # require a -> here
+  return $orig->(@_)
+    unless $last->isa('PPI::Token::Operator')
+        && $last->content eq '->';
+
+  # ..which is preceded by a word (class name)
+  my $previous = $last->sprevious_sibling
+    or return $orig->(@_);
+  $previous->isa('PPI::Token::Word')
+    or return $orig->(@_);
+  my $class = $previous->content;
+
+  # now we have $class->$incomplete
+
+  my $metaclass = Class::MOP::Class->initialize($class);
+
+  my $re = qr/^\Q$incomplete/;
+
+  return $orig->(@_),
+         grep { $_ =~ $re }
+         map  { $_->{name} }
+         $metaclass->compute_all_applicable_methods;
+};
+
+1;
+
+