cache methods and procs so that the same function is used for the same method.

lib/v8.rb

@@ -5,6 +5,7 @@ module V8
   VERSION = '0.7.6.pre'
   require 'v8/v8' #native glue
   require 'v8/portal'
+  require 'v8/portal/functions'
   require 'v8/context'
   require 'v8/object'
   require 'v8/array'

lib/v8/portal.rb

@@ -43,16 +43,7 @@ module V8
         h[obj] = @constructors[obj.class].GetFunction().NewInstance(args)
       end
 
-      @functions = Hash.new do |h, code|
-        template = C::FunctionTemplate::New() do |arguments|
-          rbargs = []
-          for i in 0..arguments.Length() - 1
-            rbargs << rb(arguments[i])
-          end
-          rubycall(code, *rbargs)
-        end
-        h[code] = template.GetFunction()
-      end
+      @functions = Functions.new(self)
 
       @embedded_constructors = Hash.new do |h, cls|
         template = @constructors[cls]

lib/v8/portal/functions.rb

@@ -0,0 +1,47 @@
+module V8
+  class Portal
+    class Functions
+      def initialize(portal)
+        @portal = portal
+        @procs, @methods = {},{}
+      end
+      
+      def [](code)
+        case code
+        when Proc
+          @procs[code] ||= begin
+            template = C::FunctionTemplate::New() do |arguments|
+              rbargs = []
+              for i in 0..arguments.Length() - 1
+                rbargs << @portal.rb(arguments[i])
+              end
+              @portal.rubycall(code, *rbargs)
+            end
+            template.GetFunction()
+          end
+        when Method
+          get_method(code)
+        end
+      end
+      
+      def get_method(method)
+        unbound = method.unbind
+        @methods[unbound.to_s] ||= begin
+          template = C::FunctionTemplate::New() do |arguments|
+            rbargs = []
+            for i in 0..arguments.Length() - 1
+              rbargs << @portal.rb(arguments[i])
+            end
+            this = @portal.rb(arguments.This())
+            begin
+              @portal.rubycall(unbound.bind(this), *rbargs)
+            rescue Exception => e
+              raise e
+            end
+          end
+          template.GetFunction()
+        end
+      end
+    end
+  end
+end