Contents

# frozen_string_literal: true

module Dry
  module Transformer
    # Composition of two functions
    #
    # @api private
    class Composite
      # @return [Proc]
      #
      # @api private
      attr_reader :left

      # @return [Proc]
      #
      # @api private
      attr_reader :right

      # @api private
      def initialize(left, right)
        @left = left
        @right = right
      end

      # Call right side with the result from the left side
      #
      # @param [Object] value The input value
      #
      # @return [Object]
      #
      # @api public
      def call(value)
        right.call(left.call(value))
      end
      alias_method :[], :call

      # @see Function#compose
      #
      # @api public
      def compose(other)
        self.class.new(self, other)
      end
      alias_method :+, :compose
      alias_method :>>, :compose

      # @see Function#to_ast
      #
      # @api public
      def to_ast
        left.to_ast << right.to_ast
      end
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
dry-transformer-1.0.1	lib/dry/transformer/composite.rb
dry-transformer-1.0.0	lib/dry/transformer/composite.rb
dry-transformer-0.1.1	lib/dry/transformer/composite.rb
dry-transformer-0.1.0	lib/dry/transformer/composite.rb