module Origami::CompoundObject

def copy


This method can be quite expensive as nested objects are copied too.
Creates a deep copy of the compound object.
def copy
    obj = self.update_values(&:copy)
    transfer_attributes(obj)
end

def delete(item)


Removes the item from the compound object if present.
def delete(item)
    obj = super(item.to_o)
    unlink_object(obj) unless obj.nil?
end

def include?(item)


Returns true if the item is present in the compound object.
def include?(item)
    super(item.to_o)
end

def link_object(item) 

def link_object(item)
    obj = item.to_o
    obj.parent = self unless obj.indirect?
    cache_object(obj)
end

def unlink_object(obj) 

def unlink_object(obj)
    obj.parent = nil 
    obj
end

def update_values(&b)


Returns a new compound object with updated values based on the provided block.
def update_values(&b)
    return enum_for(__method__) unless block_given?
    return self.class.new self.transform_values(&b) if self.respond_to?(:transform_values)
    return self.class.new self.map(&b) if self.respond_to?(:map)
    raise NotImplementedError, "This object does not implement this method"
end

def update_values!(&b)


Modifies the compound object's values based on the provided block.
def update_values!(&b)
    return enum_for(__method__) unless block_given?
    return self.transform_values!(&b) if self.respond_to?(:transform_values!)
    return self.map!(&b) if self.respond_to?(:map!)
    raise NotImplementedError, "This object does not implement this method"
end