class YARP::LibRubyParser::YPString

def self.with(filepath, &block)
  pointer = FFI::MemoryPointer.new(SIZEOF)
  begin
    raise unless LibRubyParser.yp_string_mapped_init(pointer, filepath)
    yield new(pointer)
  ensure
    LibRubyParser.yp_string_free(pointer)
    pointer.free
  end
end