X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FCatalyst%2FUtils.pm;h=ac20a70e2e89ec924e159ff40235b35be4c0def1;hb=f365983bb5c7fb67e1b5095edbb5166396bbc556;hp=3a0974b2088c414aa43cdab0cdb873e3fea8efd7;hpb=a88c7ec8a3a92fdf966dce0026d06082a10c7714;p=catagits%2FCatalyst-Runtime.git

diff --git a/lib/Catalyst/Utils.pm b/lib/Catalyst/Utils.pm
index 3a0974b..ac20a70 100644
--- a/lib/Catalyst/Utils.pm
+++ b/lib/Catalyst/Utils.pm
@@ -6,6 +6,7 @@ use File::Spec;
 use HTTP::Request;
 use Path::Class;
 use URI;
+use Class::Inspector;
 
 =head1 NAME
 
@@ -210,9 +211,37 @@ sub request {
     return $request;
 }
 
+=head2 ensure_class_loaded($class_name)
+
+Loads the class unless it already has been loaded.
+
+=cut
+
+sub ensure_class_loaded {
+    my $class = shift;
+
+    return if Class::Inspector->loaded( $class ); # if a symbol entry exists we don't load again
+
+    # this hack is so we don't overwrite $@ if the load did not generate an error
+    my $error;
+    {
+        local $@;
+        eval "require $class";
+        $error = $@;
+    }
+
+    die $error if $error;
+    die "require $class was successful but the package is not defined"
+        unless Class::Inspector->loaded($class);
+
+    return 1;
+}
+
+
 =head1 AUTHOR
 
 Sebastian Riedel, C<sri@cpan.org>
+Yuval Kogman, C<nothingmuch@woobling.org>
 
 =head1 COPYRIGHT