sbool ai_patternSwitch_debug;

static S ai_patternSwitch(S to, S s) {
  ret ai_patternSwitch(ai_getOperator(s), to, s);
}

static S ai_patternSwitch(S from, S to, S s) {
  ret ai_patternSwitch(javaTokC(from), to, s);
}

static S ai_patternSwitch(L<S> from, S to, S s) {
  L<S> tok = javaTokPlusBracketsC_unquote(s);
  L<S> tok1 = from, tok2 = javaTokC(to);
  /*S op = ai_getOperator(s);
  if (neq(from, op))
    fail("Different operator: " + renderStructs(+from, +to, +op, +s));*/
    
  L<S> operands = ai_operands(from, s);
  int iOperand = 0;
  new L<S> out;
  
  for (S t : tok2) {
    if (eq(t, "*"))
      out.add(operands.get(iOperand++));
    else
      out.add(t);
  }
  if (ai_patternSwitch_debug) printStruct(+out);
  ret joinWithSpace(out);
}