Method pop

java/com/google/re2j/Parser.java:751–755

()

    // Returns the rune at the cursor position, and advances the cursor
    // past it.  Precondition: |more()|.
    int pop() {
      int r = str.codePointAt(pos);
      pos += Character.charCount(r);
      return r;
    }

    // Equivalent to both peek() == c but more efficient because we
    // don't support surrogates.  Precondition: |more()|.