// set flag JSONSpecialIntegral_debug.

svoid test_JSONSpecialIntegral() {
  new JSONSpecialIntegral integral;
  integral.analyze([[{"abcdefghijklmnop": "abcdefghijklmnopq", "abcdefghijklmnopq": "abcdefghijklmnop"}]]);
  print(integral.stats()); 
  print(sfuWithIndent(1, integral));
  int n = integral.n();
  
  embedded void descend(int i, int iEnd) {
    printVars descend(i, iEnd);
    if (i >= iEnd) ret;
    int lvl = integral.bracketLevel(iEnd-1);
    if (lvl != 0)
      fail("Bad brackets: level at end is " + lvl);
    print("Brackets in range " + i + " to " + iEnd + ": "
      + (integral.bracketCount(iEnd-1)-integral.bracketCount(i-1)));
  }
  
  descend(0, n);
}