Class: ShapeOf::Union

Inherits:
Shape
  • Object
show all
Defined in:
lib/shape_of.rb

Overview

Union[Shape1, Shape2, …] denotes that it can be of one the provided shapes

Class Method Summary collapse

Methods inherited from Shape

#initialize, required?, shape_of?

Constructor Details

This class inherits a constructor from ShapeOf::Shape

Class Method Details

.[](*shapes) ⇒ Object 



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# File 'lib/shape_of.rb', line 247

def self.[](*shapes)
  Class.new(self) do
    @class_name = "#{superclass.name}[#{shapes.map(&:inspect).join(", ")}]"
    @shapes = shapes

    def self.name
      @class_name
    end

    def self.to_s
      @class_name
    end

    def self.inspect
      @class_name
    end

    def self.shape_of?(object)
      @shapes.any? do |shape|
        if shape.respond_to? :shape_of?
          shape.shape_of? object
        elsif shape.is_a? ::Hash
          Hash[shape].shape_of? object
        elsif shape.is_a? ::Array
          Array[shape].shape_of? object
        elsif shape.is_a? Class
          object.instance_of? shape
        else
          object == shape
        end
      end
    end
  end
end