Method Matcher

java/com/google/re2j/Matcher.java:74–84

(Pattern pattern)

  private int anchorFlag;

  private Matcher(Pattern pattern) {
    if (pattern == null) {
      throw new NullPointerException("pattern is null");
    }
    this.pattern = pattern;
    RE2 re2 = pattern.re2();
    groupCount = re2.numberOfCapturingGroups();
    groups = new int[2 + 2 * groupCount];
    namedGroups = re2.namedGroups;
    numberOfInstructions = re2.numberOfInstructions();
  }

  /** Creates a new {@code Matcher} with the given pattern and input. */
  Matcher(Pattern pattern, CharSequence input) {