Class: Thy::Types::Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/thy/types/hash.rb

Instance Method Summary collapse

Constructor Details

#initialize(schema) ⇒ Hash

Returns a new instance of Hash.



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# File 'lib/thy/types/hash.rb', line 6

def initialize(schema)
  @schema = schema
  @schema_length = schema.length
  @schema_keys = schema.keys
end

Instance Method Details

#check(value) ⇒ Object 



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# File 'lib/thy/types/hash.rb', line 12

def check(value)
  unless value.is_a?(::Hash)
    return Result::Failure.new("Expected a Hash, but got: #{value.inspect}")
  end
  if @schema_length != value.length
    return Result::Failure.new("Expected #{value.inspect} to contain #{@schema_length} keys")
  end
  if @schema_keys & value.keys != @schema_keys
    return Result::Failure.new(
      "Expected #{value.inspect} to contain keys: #{@schema_keys.inspect}",
    )
  end

  @schema.each do |k, t|
    v = value.fetch(k)

    if t.check(v).failure?
      return Result::Failure.new("Expected #{v.inspect} to be of type #{t.inspect}")
    end
  end

  Result::Success
end