diff --git a/lib/awesome_print/formatter.rb b/lib/awesome_print/formatter.rb
index 531cc63..7dd8297 100644
--- a/lib/awesome_print/formatter.rb
+++ b/lib/awesome_print/formatter.rb
@@ -6,10 +6,7 @@ require 'awesome_print/type_discover'
 module AwesomePrint
   class Formatter
 
-    CORE = [ :array, :bigdecimal, :class, :dir, :file, :hash, :method, :rational, :set, :struct, :unboundmethod ]
-    DEFAULT_LIMIT_SIZE = 7
-
-    attr_reader :options, :inspector, :indentation, :type
+    attr_reader :options, :inspector, :indentation, :type, :object
 
     def initialize(inspector)
       @inspector   = inspector
@@ -19,17 +16,10 @@ module AwesomePrint
 
     # Main entry point to format an object.
     #------------------------------------------------------------------------------
-    def format(object, type = nil)
-      @type = type
-      core_class = cast(object, type)
-      AwesomePrint::FormatterFactory.new(core_class, self, object).call
-    end
-
-    # Hook this when adding custom formatters. Check out lib/awesome_print/ext
-    # directory for custom formatters that ship with awesome_print.
-    #------------------------------------------------------------------------------
-    def cast(object, type)
-      AwesomePrint::TypeDiscover.new(object).call || CORE.grep(type)[0] || :self
+    def format(object)
+      @type = printable(object)
+      @object = object
+      AwesomePrint::FormatterFactory.new(self, object).call
     end
 
     # Pick the color and apply it to the given string as necessary.
@@ -85,5 +75,39 @@ module AwesomePrint
     ensure
       @options[:indent] = current
     end
+
+    # Format nested data, for example:
+    #   arr = [1, 2]; arr << arr
+    #   => [1,2, [...]]
+    #   hash = { :a => 1 }; hash[:b] = hash
+    #   => { :a => 1, :b => {...} }
+    #------------------------------------------------------------------------------
+    def nested(object)
+      case printable(object)
+        when :array  then colorize("[...]", :array)
+        when :hash   then colorize("{...}", :hash)
+        when :struct then colorize("{...}", :struct)
+        else colorize("...#{object.class}...", :class)
+      end
+    end
+
+    #------------------------------------------------------------------------------
+    def unnested(object)
+      format(object)
+    end
+
+    # Turn class name into symbol, ex: Hello::World => :hello_world. Classes that
+    # inherit from Array, Hash, File, Dir, and Struct are treated as the base class.
+    #------------------------------------------------------------------------------
+    def printable(object)
+      case object
+      when Array  then :array
+      when Hash   then :hash
+      when File   then :file
+      when Dir    then :dir
+      when Struct then :struct
+      else object.class.to_s.gsub(/:+/, "_").downcase.to_sym
+      end
+    end
   end
 end
diff --git a/lib/awesome_print/formatter_factory.rb b/lib/awesome_print/formatter_factory.rb
index 29d5fd6..98e6346 100644
--- a/lib/awesome_print/formatter_factory.rb
+++ b/lib/awesome_print/formatter_factory.rb
@@ -3,8 +3,9 @@ require 'awesome_print/formatters'
 module AwesomePrint
   class FormatterFactory
 
-    def initialize(class_name, formatter, object)
-      @class_name = class_name.to_s.split('_').map(&:capitalize).join('')
+    def initialize(formatter, object)
+      @type = AwesomePrint::TypeDiscover.new(formatter).call
+      @class_name = @type.to_s.split('_').map(&:capitalize).join('')
       @formatter = formatter
       @object = object
     end
diff --git a/lib/awesome_print/formatters/enumerable.rb b/lib/awesome_print/formatters/enumerable.rb
index a5c9633..a31601e 100644
--- a/lib/awesome_print/formatters/enumerable.rb
+++ b/lib/awesome_print/formatters/enumerable.rb
@@ -2,6 +2,8 @@ module AwesomePrint
   module Formatters
     module Enumerable
 
+      DEFAULT_LIMIT_SIZE = 7
+
       # To support limited output, for example:
       #
       # ap ('a'..'z').to_a, :limit => 3
@@ -51,7 +53,7 @@ module AwesomePrint
       end
 
       def get_limit_size
-        options[:limit] == true ? AwesomePrint::Formatter::DEFAULT_LIMIT_SIZE : options[:limit]
+        options[:limit] == true ? DEFAULT_LIMIT_SIZE : options[:limit]
       end
     end
   end
diff --git a/lib/awesome_print/inspector.rb b/lib/awesome_print/inspector.rb
index e887618..dc3d257 100644
--- a/lib/awesome_print/inspector.rb
+++ b/lib/awesome_print/inspector.rb
@@ -49,11 +49,11 @@ module AwesomePrint
     #------------------------------------------------------------------------------
     def awesome(object)
       if Thread.current[AP].include?(object.object_id)
-        nested(object)
+        @formatter.nested(object)
       else
         begin
           Thread.current[AP] << object.object_id
-          unnested(object)
+          @formatter.unnested(object)
         ensure
           Thread.current[AP].pop
         end
@@ -69,40 +69,6 @@ module AwesomePrint
 
     private
 
-    # Format nested data, for example:
-    #   arr = [1, 2]; arr << arr
-    #   => [1,2, [...]]
-    #   hash = { :a => 1 }; hash[:b] = hash
-    #   => { :a => 1, :b => {...} }
-    #------------------------------------------------------------------------------
-    def nested(object)
-      case printable(object)
-        when :array  then @formatter.colorize("[...]", :array)
-        when :hash   then @formatter.colorize("{...}", :hash)
-        when :struct then @formatter.colorize("{...}", :struct)
-        else @formatter.colorize("...#{object.class}...", :class)
-      end
-    end
-
-    #------------------------------------------------------------------------------
-    def unnested(object)
-      @formatter.format(object, printable(object))
-    end
-
-    # Turn class name into symbol, ex: Hello::World => :hello_world. Classes that
-    # inherit from Array, Hash, File, Dir, and Struct are treated as the base class.
-    #------------------------------------------------------------------------------
-    def printable(object)
-      case object
-      when Array  then :array
-      when Hash   then :hash
-      when File   then :file
-      when Dir    then :dir
-      when Struct then :struct
-      else object.class.to_s.gsub(/:+/, "_").downcase.to_sym
-      end
-    end
-
     # Update @options by first merging the :color hash and then the remaining keys.
     #------------------------------------------------------------------------------
     def merge_options!(options = {})
diff --git a/lib/awesome_print/type_discover.rb b/lib/awesome_print/type_discover.rb
index d408400..6723a7c 100644
--- a/lib/awesome_print/type_discover.rb
+++ b/lib/awesome_print/type_discover.rb
@@ -3,26 +3,36 @@ require 'awesome_print/types'
 module AwesomePrint
   class TypeDiscover
 
-    TYPES = %w(ActiveRecord ActiveSupport Mongoid MongoMapper NoBrainer Nokogiri
+    BUILT_IN_TYPES = [ :array, :bigdecimal, :class, :dir, :file, :hash, :method, :rational, :set, :struct, :unboundmethod ]
+    CUSTOM_TYPES = %w(ActiveRecord ActiveSupport Mongoid MongoMapper NoBrainer Nokogiri
                OpenStruct Ripple Sequel)
 
-    def initialize(object)
-      @object = object
+    def initialize(formatter)
+      @type = formatter.type
+      @object = formatter.object
     end
 
     def call
-      TYPES.map do |type|
-        begin
-          klass = AwesomePrint::Support.constantize("AwesomePrint::Types::#{type}")
-          klass.new(object).call
-        rescue NameError
-          nil
-        end
-      end.detect { |type| !type.nil? }
+      custom_type || built_in_type || :self
     end
 
     private
 
-      attr_reader :object
+      attr_reader :object, :type
+
+      def custom_type
+        CUSTOM_TYPES.map do |type|
+          begin
+            klass = AwesomePrint::Support.constantize("AwesomePrint::Types::#{type}")
+            klass.new(object).call
+          rescue NameError
+            nil
+          end
+        end.detect { |type| !type.nil? }
+      end
+
+      def built_in_type
+        BUILT_IN_TYPES.grep(type)[0]
+      end
   end
 end