Method reverse

classpath/java/util/regex/PikeVM.java:525–527

Reverses the program (effectively matching the reverse pattern). It is a well-known fact that any regular expression can be reordered trivially into an equivalent regular expression to be applied in backward direction (coming in real handy for look-behind expressions). Example: instead

()

   * </p>
   */
  public void reverse() {
    reverse(findPrefixLength, program.length);
  }

  /**
   * Reverses a specific part of the program (to match in reverse direction).