Class: ShapeOf::Array

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

Overview

Array denotes that it is an array of shapes. It checks every element in the array and verifies that the element is in the correct shape. This, along with Hash, are the core components of this module. Note that a ShapeOf::Array.shape_of?([]) will pass because it is vacuously true for an empty array.

Class Method Summary collapse

Methods inherited from Shape

#initialize, required?

Constructor Details

This class inherits a constructor from ShapeOf::Shape

Class Method Details

.[](shape) ⇒ Object 



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# File 'lib/shape_of.rb', line 141

def self.[](shape)
  Class.new(self) do
    @class_name = "#{superclass.name}[#{shape.inspect}]"
    @shape = shape
    @internal_class = superclass.instance_variable_get(:@internal_class)

    def self.name
      @class_name
    end

    def self.to_s
      @class_name
    end

    def self.inspect
      @class_name
    end

    def self.shape_of?(array)
      super && array.all? do |elem|
        if @shape.respond_to? :shape_of?
          @shape.shape_of? elem
        elsif @shape.is_a? ::Array
          Array[@shape.first].shape_of? elem
        elsif @shape.is_a? ::Hash
          Hash[@shape].shape_of? elem
        elsif @shape.is_a? Class
          elem.instance_of? @shape
        else
          elem == @shape
        end
      end
    end
  end
end

.shape_of?(object) ⇒ Boolean

Returns:



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# File 'lib/shape_of.rb', line 137

def self.shape_of?(object)
  object.instance_of? @internal_class
end