1 files changed, 0 insertions, 113 deletions
diff --git a/activerecord/lib/active_record/attribute_set.rb b/activerecord/lib/active_record/attribute_set.rb
deleted file mode 100644
index 66b278219a..0000000000
--- a/activerecord/lib/active_record/attribute_set.rb
+++ /dev/null
@@ -1,113 +0,0 @@
-require "active_record/attribute_set/builder"
-require "active_record/attribute_set/yaml_encoder"
-
-module ActiveRecord
-  class AttributeSet # :nodoc:
-    delegate :each_value, :fetch, to: :attributes
-
-    def initialize(attributes)
-      @attributes = attributes
-    end
-
-    def [](name)
-      attributes[name] || Attribute.null(name)
-    end
-
-    def []=(name, value)
-      attributes[name] = value
-    end
-
-    def values_before_type_cast
-      attributes.transform_values(&:value_before_type_cast)
-    end
-
-    def to_hash
-      initialized_attributes.transform_values(&:value)
-    end
-    alias_method :to_h, :to_hash
-
-    def key?(name)
-      attributes.key?(name) && self[name].initialized?
-    end
-
-    def keys
-      attributes.each_key.select { |name| self[name].initialized? }
-    end
-
-    if defined?(JRUBY_VERSION)
-      # This form is significantly faster on JRuby, and this is one of our biggest hotspots.
-      # https://github.com/jruby/jruby/pull/2562
-      def fetch_value(name, &block)
-        self[name].value(&block)
-      end
-    else
-      def fetch_value(name)
-        self[name].value { |n| yield n if block_given? }
-      end
-    end
-
-    def write_from_database(name, value)
-      attributes[name] = self[name].with_value_from_database(value)
-    end
-
-    def write_from_user(name, value)
-      attributes[name] = self[name].with_value_from_user(value)
-    end
-
-    def write_cast_value(name, value)
-      attributes[name] = self[name].with_cast_value(value)
-    end
-
-    def freeze
-      @attributes.freeze
-      super
-    end
-
-    def deep_dup
-      dup.tap do |copy|
-        copy.instance_variable_set(:@attributes, attributes.deep_dup)
-      end
-    end
-
-    def initialize_dup(_)
-      @attributes = attributes.dup
-      super
-    end
-
-    def initialize_clone(_)
-      @attributes = attributes.clone
-      super
-    end
-
-    def reset(key)
-      if key?(key)
-        write_from_database(key, nil)
-      end
-    end
-
-    def accessed
-      attributes.select { |_, attr| attr.has_been_read? }.keys
-    end
-
-    def map(&block)
-      new_attributes = attributes.transform_values(&block)
-      AttributeSet.new(new_attributes)
-    end
-
-    def ==(other)
-      attributes == other.attributes
-    end
-
-    # TODO Change this to private once we've dropped Ruby 2.2 support.
-    # Workaround for Ruby 2.2 "private attribute?" warning.
-    protected
-
-      attr_reader :attributes
-
-    private
-
-      def initialized_attributes
-        attributes.select { |_, attr| attr.initialized? }
-      end
-  end
-end