}
	s, err := json.Marshal(p)
	if err != nil {
		panic(err) // This should be impossible because scanner.Error contains only strings and ints.
	}
	return string(s)
}

// parseErrorFromString converts a string produced by parseErrorToString back
// to an error.  An empty string is converted to a nil error, and all
// other strings are expected to be JSON-marshaled parseError structs.

			if error := tf.error(); error != "" {
				badGoFile(name, errors.New(tf.error()))
				continue
			} else if parseError := tf.parseError(); parseError != "" {
				badGoFile(name, parseErrorFromString(tf.parseError()))
				// Fall through: we still want to list files with parse errors.
			}
		}

		var shouldBuild = true
		if !ctxt.goodOSArchFile(name, allTags) && !ctxt.UseAllFiles {