class PowerAssert::TraceContext

def initialize(binding)
  target_frame, *base = PowerAssert.app_caller_locations
  super(base.length)
  path = target_frame.path
  lineno = target_frame.lineno
  if File.exist?(path)
    line = File.open(path) {|fp| fp.each_line.drop(lineno - 1).first }
    @parser = Parser.new(line, path, lineno, binding)
  else
    @parser = Parser::DUMMY
  end
end