DSL EXPRESSION:
$a==1 && $b == 1 || $c == 1


AST:
"block" [tt:block] [nt:StatementBlock]
    "||" [tt:op_logical_or] [nt:BareBoolean]
        "||" [tt:op_logical_or] [nt:Operator]
            "&&" [tt:op_logical_and] [nt:Operator]
                "==" [tt:op_eqeq] [nt:Operator]
                    "$a" [tt:field_name] [nt:DirectFieldValue]
                    "1" [tt:int_literal] [nt:int_literal]
                "==" [tt:op_eqeq] [nt:Operator]
                    "$b" [tt:field_name] [nt:DirectFieldValue]
                    "1" [tt:int_literal] [nt:int_literal]
            "==" [tt:op_eqeq] [nt:Operator]
                "$c" [tt:field_name] [nt:DirectFieldValue]
                "1" [tt:int_literal] [nt:int_literal]

