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# frozen_string_literal: true
require "active_support/core_ext/object/deep_dup"
require "active_model/attribute_set/builder"
require "active_model/attribute_set/yaml_encoder"
module ActiveModel
class AttributeSet # :nodoc:
delegate :each_value, :fetch, :except, 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
def fetch_value(name, &block)
self[name].value(&block)
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
self.class.allocate.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
protected
attr_reader :attributes
private
def initialized_attributes
attributes.select { |_, attr| attr.initialized? }
end
end
end
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