Class: Camille::Types::Object

Inherits:
BasicType show all
Defined in:
lib/camille/types/object.rb

Defined Under Namespace

Classes: ArgumentError

Instance Attribute Summary collapse

Attributes inherited from BasicType

#fingerprint

Instance Method Summary collapse

Methods inherited from BasicType

&, #&, #[], [], directly_instantiable?, inherited, instance, #transform, #|, |

Constructor Details

#initialize(fields) ⇒ Object

Returns a new instance of Object.



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# File 'lib/camille/types/object.rb', line 7

def initialize fields
  @optional_keys = []
  @fields = normalize_fields fields
  @fingerprint = generate_fingerprint
end

Instance Attribute Details

#fields ⇒ Object (readonly)

Returns the value of attribute fields.



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# File 'lib/camille/types/object.rb', line 5

def fields
  @fields
end

#optional_keys ⇒ Object (readonly)

Returns the value of attribute optional_keys.



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# File 'lib/camille/types/object.rb', line 5

def optional_keys
  @optional_keys
end

Instance Method Details

#check(value) ⇒ Object 



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# File 'lib/camille/types/object.rb', line 13

def check value
  if value.is_a? Hash
    keys = (@fields.keys + value.keys).uniq
    keys_to_check, keys_to_skip = keys.partition{|key| @fields[key]}

    results = keys_to_check.map do |key|
      type = @fields[key]
      if @optional_keys.include?(key) && value[key].nil?
        nil
      else
        [key, type.check(value[key])]
      end
    end.compact

    errors = results.map do |key, result|
      if result.type_error?
        [key.to_s, result]
      else
        nil
      end
    end.compact

    skipped_pairs = keys_to_skip.map do |key|
      [key, value[key]]
    end

    if errors.empty?
      object = Camille::ObjectHash[results.map{|key, checked| [key, checked.value]}.concat(skipped_pairs).to_h]
      Camille::Checked.new(fingerprint, object)
    else
      Camille::TypeError.new(**errors.to_h)
    end
  else
    Camille::TypeError.new("Expected hash, got #{value.inspect}.")
  end
end

#literal ⇒ Object 



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# File 'lib/camille/types/object.rb', line 50

def literal
  "{#{@fields.map{|k,v| "#{literal_key k}: #{v.literal}"}.join(', ')}}"
end