class Erubis::PI::TinyEruby

def evaluate(_context=Object.new)

def evaluate(_context=Object.new)
  if _context.is_a?(Hash)
    _obj = Object.new
    _context.each do |k, v| _obj.instance_variable_set("@#{k}", v) end
    _context = _obj
  end
  _context.instance_eval @src
end