module Shaped

# File lib/shaped.rb, line 13
def self.Shape(*shape_descriptions)
  validation_options = shape_descriptions.extract_options!
  if shape_descriptions.size >= 2
    Shaped::Shapes::Any.new(*shape_descriptions, validation_options)
  else
    # If the shape_descriptions argument list was just one hash, then `extract_options!` would
    # have removed it, making `shape_descriptions` an empty array, so we need to "restore" the
    # "validation options" to their actual role of a Hash `shape_description` here.
    shape_description =
      case
      when shape_descriptions.empty? && validation_options.is_a?(Hash)
        validation_options
      else
        shape_descriptions.first
      end

    case shape_description
    when Shaped::Shape then shape_description
    when Hash then Shaped::Shapes::Hash.new(shape_description)
    when Array then Shaped::Shapes::Array.new(shape_description)
    when Symbol then Shaped::Shapes::Method.new(shape_description)
    when Class then Shaped::Shapes::Class.new(shape_description, validation_options)
    else
      if shape_description.respond_to?(:call)
        Shaped::Shapes::Callable.new(shape_description)
      else
        Shaped::Shapes::Equality.new(shape_description)
      end
    end
  end
end