module Chervil::AST
  class Conditional
    attr_reader :predicate
    attr_reader :true_branch
    attr_reader :false_branch

    def initialize(predicate, true_branch, false_branch)
      @predicate = predicate
      @true_branch = true_branch
      @false_branch = false_branch
    end

    def ==(other)
      @predicate == other.predicate && @true_branch == other.true_branch && @false_branch == other.false_branch
    end

    def evaluate(env)
      if @predicate.evaluate(env) == false
        @false_branch.evaluate(env)
      else
        @true_branch.evaluate(env)
      end
    end
  end
end