[Truffle] Do not cache Regexp#named_captures.

* It is not a fast-path operation, neither Regexp#names nor MatchData#names. * Caching still involves Hash#dup. * See #4436.
jruby · Jan 12, 2017 · 9de5fa0 · 9de5fa0
1 parent 6b656fc
commit 9de5fa0
Showing 1 changed file with 1 addition and 9 deletions.
diff --git a/truffle/src/main/ruby/core/regexp.rb b/truffle/src/main/ruby/core/regexp.rb
@@ -309,15 +309,7 @@ def option_to_string(option)
   #    #=> {}
   #
   def named_captures
-    if @named_captures
-      @named_captures.dup
-    else
-      named_captures = Hash[Truffle.invoke_primitive(:regexp_names, self)]
-      unless frozen?
-        @named_captures = named_captures.dup.freeze
-      end
-      named_captures
-    end
+    Hash[Truffle.invoke_primitive(:regexp_names, self)]
   end
 
   #