Class: ObjectMembersValidation

Inherits:
Object
  • Object
show all
Includes:
HashInitialized, Inspectable
Defined in:
lib/json_patterns.rb

Constant Summary

Constants included from Inspectable

Inspectable::INSPECTING_KEY

Class Method Summary collapse

Methods included from HashInitialized

#initialize

Methods included from Inspectable

#inspect

Class Method Details

.memoized_new_from_pattern(translation, pattern) ⇒ Object 



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# File 'lib/json_patterns.rb', line 518

def self.memoized_new_from_pattern(translation, pattern)
  case pattern
  when Hash
    validation = pattern.to_a.reverse.reduce(EmptyObjectMembersValidation.new) do |es, e|
      (name, value) = e
      name = name.to_s if name.is_a? Symbol
      case name
      when String
        value_validation = Validation.memoized_new_from_pattern(translation, value)
        v = SingleObjectMemberValidation.new(name: name, value_validation: value_validation)
      when DisjunctionKey
        unless value.is_a?(Array)
          raise "one_of should only be used with an array"
        end
        vals = value.map { |pat|
          ObjectMembersFromObjectValidation.new(object_validation:
            Validation.memoized_new_from_pattern(translation, pat)
          )
        }
        v = ObjectMembersDisjunctionValidation.new(alternatives: vals)
      when OptionalKey
        v = OptionalObjectMembersValidation.new(members:
          ObjectMembersFromObjectValidation.new(object_validation:
            Validation.memoized_new_from_pattern(translation, value)
          )
        )
      when ManyKey
        v = ManyObjectMembersValidation.new(
          value_validation: Validation.memoized_new_from_pattern(translation, value)
        )
      when MembersKey
        v = ObjectMembersFromObjectValidation.new(
          object_validation: Validation.memoized_new_from_pattern(translation, value)
        )
      else
        raise "unrecognized key type in pattern: #{name.class}"
      end
      SequencedObjectMembersValidation.new(left: v, right: es)
    end
  else
    raise "cannot create object members validation from a #{pattern.class}"
  end
end