DSL EXPRESSION:
1 == 2 <= 3


AST:
"block" [tt:block] [nt:StatementBlock]
    "==" [tt:op_eqeq] [nt:BareBoolean]
        "==" [tt:op_eqeq] [nt:Operator]
            "1" [tt:int_literal] [nt:int_literal]
            "<=" [tt:op_le] [nt:Operator]
                "2" [tt:int_literal] [nt:int_literal]
                "3" [tt:int_literal] [nt:int_literal]

