module SimpleCommand

# File lib/simple_command.rb, line 13
def self.prepended(base)
  base.extend ClassMethods
end

# File lib/simple_command.rb, line 17
def call
  fail NotImplementedError unless defined?(super)

  @called = true
  @result = super

  self
end

# File lib/simple_command.rb, line 35
def errors
  return super if defined?(super)

  @errors ||= Errors.new
end

# File lib/simple_command.rb, line 31
def failure?
  called? && errors.any?
end

# File lib/simple_command.rb, line 26
def success?
  called? && !failure?
end

# File lib/simple_command.rb, line 43
def called?
  @called ||= false
end