public Stmt lookupIfStmtNULL(CTX ctx) {
		int i;
		List<Stmt> bka = this.parentNULL.blocks;
		Stmt prevIfStmt = null;
		for(i = 0; bka.size() != 0; i++) {
			Stmt s = bka.get(i);
			if(s == this) {
				if(prevIfStmt != null) {
					return prevIfStmt.lookupIfStmtWithoutElse(ctx);
				}
				return null;
			}
			if(s.syntax == null) continue;  // this is done
			prevIfStmt = (s.syntax.kw.equals(KW._if)) ? s : null;
		}
		return null;
	}