Avoid repeatedly calling File.basename in TopLevel

Author: st0012

lib/rdoc/code_object/top_level.rb

@@ -16,6 +16,11 @@ class RDoc::TopLevel < RDoc::Context
 
   attr_accessor :absolute_name
 
+  ##
+  # Base name of this file
+
+  attr_reader :base_name
+
   ##
   # All the classes or modules that were declared in
   # this file. These are assigned to either +#classes_hash+
@@ -38,6 +43,7 @@ def initialize(absolute_name, relative_name = absolute_name)
     @name = nil
     @absolute_name = absolute_name
     @relative_name = relative_name
+    @base_name     = File.basename relative_name
     @parser        = nil
 
     @classes_or_modules = []
@@ -105,13 +111,6 @@ def add_to_classes_or_modules(mod)
     @classes_or_modules << mod
   end
 
-  ##
-  # Base name of this file
-
-  def base_name
-    File.basename @relative_name
-  end
-
   alias name base_name
 
   ##
@@ -208,10 +207,8 @@ def object_class
   # Base name of this file without the extension
 
   def page_name
-    basename = File.basename @relative_name
-    basename =~ /\.(rb|rdoc|txt|md)$/i
-
-    $` || basename
+    @basename =~ /\.(rb|rdoc|txt|md)$/i
+    $` || @base_name
   end
 
   ##