module Kalculator::Transform

Public Class Methods

is_terminal?(node) click to toggle source
# File lib/kalculator/transform.rb, line 15
def self.is_terminal?(node)
  return false if node.is_a?(Array)
  true
end
run(node) { |node| ... } click to toggle source
# File lib/kalculator/transform.rb, line 3
def self.run(node, &block)
  new_node = yield node
  if is_terminal?(new_node)
    new_node
  elsif new_node.first.is_a?(Symbol)
    args = new_node[1..-1].map{ |arg| run(arg, &block) }
    args.unshift(new_node.first)
  else
    new_node.map{|node| run(node, &block) }
  end
end