From f8ecb823a0705eda22f845abea38fc065ecc3ab9 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 28 Nov 2015 05:26:16 +0000
Subject: ripper/core.rb: dispatch alias

* ext/ripper/lib/ripper/core.rb: alias same methods instead of
  eval for each events.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52774 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/ripper/lib/ripper/core.rb | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

(limited to 'ext/ripper')

diff --git a/ext/ripper/lib/ripper/core.rb b/ext/ripper/lib/ripper/core.rb
index 637a72f4ad..de8042f444 100644
--- a/ext/ripper/lib/ripper/core.rb
+++ b/ext/ripper/lib/ripper/core.rb
@@ -29,16 +29,21 @@ class Ripper
 
   private
 
+  def _dispatch_0() nil end
+  def _dispatch_1(a) a end
+  def _dispatch_2(a, b) a end
+  def _dispatch_3(a, b, c) a end
+  def _dispatch_4(a, b, c, d) a end
+  def _dispatch_5(a, b, c, d, e) a end
+  def _dispatch_6(a, b, c, d, e, f) a end
+  def _dispatch_7(a, b, c, d, e, f, g) a end
+
   #
   # Parser Events
   #
 
   PARSER_EVENT_TABLE.each do |id, arity|
-    module_eval(<<-End, __FILE__, __LINE__ + 1)
-      def on_#{id}(#{ ('a'..'z').to_a[0, arity].join(', ') })
-        #{arity == 0 ? 'nil' : 'a'}
-      end
-    End
+    alias_method "on_#{id}", "_dispatch_#{arity}"
   end
 
   # This method is called when weak warning is produced by the parser.
@@ -60,11 +65,7 @@ class Ripper
   #
 
   SCANNER_EVENTS.each do |id|
-    module_eval(<<-End, __FILE__, __LINE__ + 1)
-      def on_#{id}(token)
-        token
-      end
-    End
+    alias_method "on_#{id}", :_dispatch_1
   end
 
 end
-- 
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