Class: Monolens::Object::Rename

Inherits:
Object
  • Object
show all
Includes:
Lens
Defined in:
lib/monolens/stdlib/object/rename.rb

Instance Attribute Summary

Attributes included from Lens

#options

Instance Method Summary collapse

Methods included from Lens

#fail!, included, #initialize

Methods included from Lens::FetchSupport

#fetch_on

Instance Method Details

#call(arg, world = {}) ⇒ Object 



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# File 'lib/monolens/stdlib/object/rename.rb', line 10

def call(arg, world = {})
  is_hash!(arg, world)

  dup = arg.dup
  option(:defn, {}).each_pair do |oldname, newname|
    actual_name, value = fetch_on(oldname, arg)
    newname = actual_name.is_a?(Symbol) ? newname.to_sym : newname.to_s
    dup.delete(actual_name)
    dup[newname] = value
  end
  dup
end