X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=p5sagit%2FDevel-REPL.git;a=blobdiff_plain;f=lib%2FDevel%2FREPL%2FPlugin%2FCompletion.pm;h=8fbe2bcb9dec2b1f672d6bf0a2a7b9d4c7efa988;hp=e9ac902e9c43b73b88115632870b1da5c02dd24f;hb=6d22063d380fc145987db58a1b6222a33a596c3e;hpb=314f229330cdc3be301a39eadb68ff8f2bf13043

diff --git a/lib/Devel/REPL/Plugin/Completion.pm b/lib/Devel/REPL/Plugin/Completion.pm
index e9ac902..8fbe2bc 100644
--- a/lib/Devel/REPL/Plugin/Completion.pm
+++ b/lib/Devel/REPL/Plugin/Completion.pm
@@ -18,6 +18,12 @@ has match_index => (
   default => sub { 0 },
 );
 
+has no_term_class_warning => (
+  isa => "Bool",
+  is  => "rw",
+  default => 0,
+);
+
 sub BEFORE_PLUGIN {
   my ($self) = @_;
 
@@ -29,6 +35,13 @@ sub BEFORE_PLUGIN {
   };
 }
 
+sub AFTER_PLUGIN {
+  my ($self) = @_;
+
+  warn "Term::ReadLine::Gnu is required for the Completion plugin to work"
+    unless $self->term->isa("Term::ReadLine::Gnu") and !$self->no_term_class_warning;
+}
+
 sub _completion {
   my ($self, $text, $line, $start, $end) = @_;
 
@@ -64,5 +77,16 @@ sub complete {
   return ();
 }
 
+# recursively find the last element
+sub last_ppi_element {
+  my ($self, $document, $type) = @_;
+  my $last = $document;
+  while ($last->can('last_element') && defined($last->last_element)) {
+    $last = $last->last_element;
+    return $last if $type && $last->isa($type);
+  }
+  return $last;
+}
+
 1;