[bundler/bundler] Extract `expanded_platforms`

https://github.com/bundler/bundler/commit/60d720eb06

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/bundler/dependency.rb b/lib/bundler/dependency.rb
index 55ffea02b6..6c2642163e 100644
--- a/lib/bundler/dependency.rb
+++ b/lib/bundler/dependency.rb
@@ -105,11 +105,15 @@ module Bundler
     def gem_platforms(valid_platforms)
       return valid_platforms if @platforms.empty?
 
-      @gem_platforms ||= @platforms.map {|pl| PLATFORM_MAP[pl] }.compact.uniq
+      @gem_platforms ||= expanded_platforms.compact.uniq
 
       valid_platforms & @gem_platforms
     end
 
+    def expanded_platforms
+      @platforms.map {|pl| PLATFORM_MAP[pl] }
+    end
+
     def should_include?
       @should_include && current_env? && current_platform?
     end