Class: Typed::Coercion::TypedHashCoercer

Inherits:
Coercer
  • Object
show all
Extended by:
T::Generic
Defined in:
lib/typed/coercion/typed_hash_coercer.rb

Constant Summary collapse

Target = 
type_member { {fixed: T::Hash[T.untyped, T.untyped]} }

Instance Method Summary collapse

Instance Method Details

#coerce(type:, value:) ⇒ Object 



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# File 'lib/typed/coercion/typed_hash_coercer.rb', line 16

def coerce(type:, value:)
  return Failure.new(CoercionError.new("Field type must be a T::Hash.")) unless used_for_type?(type)
  return Failure.new(CoercionError.new("Value must be a Hash.")) unless value.is_a?(Hash)

  return Success.new(value) if type.recursively_valid?(value)

  coerced_hash = {}
  errors = []

  value.each do |k, v|
    key_result = Coercion.coerce(type: T::Utils.coerce(T.cast(type, T::Types::TypedHash).type.types.first), value: k)
    value_result = Coercion.coerce(type: T::Utils.coerce(T.cast(type, T::Types::TypedHash).type.types.last), value: v)

    if key_result.success? && value_result.success?
      coerced_hash[key_result.payload] = value_result.payload
    else
      if key_result.failure?
        errors << key_result.error
      end

      if value_result.failure?
        errors << value_result.error
      end
    end
  end

  if errors.empty?
    Success.new(coerced_hash)
  else
    Failure.new(CoercionError.new(errors.map(&:message).join(" | ")))
  end
end

#used_for_type?(type) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/typed/coercion/typed_hash_coercer.rb', line 11

def used_for_type?(type)
  type.is_a?(T::Types::TypedHash)
end