Class: NxtSupport::HashTranslator::HashTranslationService

Inherits:
Object
  • Object
show all
Includes:
NxtInit
Defined in:
lib/nxt_support/util/hash_translator.rb

Defined Under Namespace

Classes: InvalidTranslationArgument

Instance Method Summary collapse

Instance Method Details

#call ⇒ Object 



11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
# File 'lib/nxt_support/util/hash_translator.rb', line 11

def call
  tuples.inject(hash.with_indifferent_access) do |acc, (old_key, new_key)|
    if new_key.is_a?(Hash)
      raise InvalidTranslationArgument.new("#{new_key} hash must contain only 1 key-value pair!") if new_key.size > 1
      key, value = new_key.shift
      raise InvalidTranslationArgument.new("#{value} must be a callable block!") unless value.respond_to?(:call)
      acc[key] = value.call(acc.delete(old_key))
    elsif new_key.is_a?(Array)
      value = acc.delete(old_key)
      new_key.each { |key| acc[key] = value }
    else
      acc[new_key] = acc.delete(old_key)
    end

    acc
  end
end