LocalRubygems source for local gem specs

This class (and only this class) knows about gems that are installed
locally or present in vendor/cache. Because we now have multiple source
objects, it's much more efficient to only load the installed and cached
specs into one of those sources rather than all Rubygems sources.

2 files changed, 20 insertions, 9 deletions

diff --git a/lib/bundler/source/local_rubygems.rb b/lib/bundler/source/local_rubygems.rb
new file mode 100644
index 00000000..40f072f3
--- /dev/null
+++ b/lib/bundler/source/local_rubygems.rb
@@ -0,0 +1,16 @@
+module Bundler
+  class Source
+    class LocalRubygems < Rubygems
+
+      def specs
+        @specs ||= begin
+          idx = super
+          idx.use(cached_specs, :override_dupes) if @allow_cached || @allow_remote
+          idx.use(installed_specs, :override_dupes)
+          idx
+        end
+      end
+
+    end
+  end
+end
diff --git a/lib/bundler/source/rubygems.rb b/lib/bundler/source/rubygems.rb
index b3bbe2c1..a769ee69 100644
--- a/lib/bundler/source/rubygems.rb
+++ b/lib/bundler/source/rubygems.rb
@@ -66,15 +66,10 @@ module Bundler
       alias_method :name, :to_s
 
       def specs
-        @specs ||= begin
-          # remote_specs usually generates a way larger Index than the other
-          # sources, and large_idx.use small_idx is way faster than
-          # small_idx.use large_idx.
-          idx = @allow_remote ? remote_specs.dup : Index.new
-          idx.use(cached_specs, :override_dupes) if @allow_cached || @allow_remote
-          idx.use(installed_specs, :override_dupes)
-          idx
-        end
+        # remote_specs usually generates a way larger Index than the other
+        # sources, and large_idx.use small_idx is way faster than
+        # small_idx.use large_idx.
+        @specs ||= @allow_remote ? remote_specs.dup : Index.new
       end
 
       def install(spec)