DSL EXPRESSION:
1  << 2  >> 3


AST:
"block" [tt:block] [nt:StatementBlock]
    ">>" [tt:op_shift_right] [nt:BareBoolean]
        ">>" [tt:op_shift_right] [nt:Operator]
            "<<" [tt:op_shift_left] [nt:Operator]
                "1" [tt:int_literal] [nt:int_literal]
                "2" [tt:int_literal] [nt:int_literal]
            "3" [tt:int_literal] [nt:int_literal]

