static ALQLLine agiBlue_parseQueryLine(S s) {
  LS tok = javaTokWithBrackets(s);
  
  // TODO: improve jmatch and use here
  if (eqGet(tok, 1, "return") && isIdentifier(get(tok, 3))) {
    LS l = tok_splitAtComma(subList(tok, 2));
    if (l(l) == 1)
      ret ALQLReturn(first(l));
    else
      ret ALQLReturnTuple(l);
  }
    
  T3S t = agiBlue_parseTriple(tok);
  if (t != null)
    ret ALQLTriple(t);
    
  if (lCodeTokens(tok) == 2 && eqGet(tok, 1, "lock")) {
    t = agiBlue_parseTriple(uncurly(tok.get(3)));
    if (t == null) fail("Bad lock statement: " + s);
    ret ALQLLockStatement(t);
  }
    
  if (lCodeTokens(tok) == 2 && eqGet(tok, 1, "page")) {
    S page = uncurly(tok.get(3));
    S method = containsDollarVars(page) ? "flexMatchDollarVarsIC_first" : "eqic";
    ret ALQLPage(page, method);
  }
    
  if (lCodeTokens(tok) == 3 && eqGet(tok, 1, "slice")) {
    S slice = unquote(tok.get(3));
    S contents = uncurly(tok.get(5));
    ret ALQLSlice(slice, agiBlue_parseQueryScript(print(+contents)));
  }
  
  fail("Can't parse ALQL line: " + s);
}

Began life as a copy of #1024260