Method index

java/com/google/re2j/MachineInput.java:134–139

(RE2 re2, int pos)

    }

    @Override
    int index(RE2 re2, int pos) {
      pos += start;
      int i = Utils.indexOf(b, re2.prefixUTF8, pos);
      return i < 0 ? i : i - pos;
    }

    @Override
    int context(int pos) {