Method positions

src/test/java/net/starlark/java/syntax/LexerTest.java:151–160

Returns a string containing just the half-open position intervals of each token. e.g. "[3,4) [4,9)".

(Token[] tokens)

   * token. e.g. "[3,4) [4,9)".
   */
  private static String positions(Token[] tokens) {
    StringBuilder buf = new StringBuilder();
    for (Token tok : tokens) {
      if (buf.length() > 0) {
        buf.append(' ');
      }
      buf.append('[').append(tok.start).append(',').append(tok.end).append(')');
    }
    return buf.toString();
  }

  @Test
  public void testBasics1() throws Exception {