DSL EXPRESSION:
$a==1 ? $b == 2 : $c == 3


AST:
"block" [tt:block] [nt:StatementBlock]
    "?" [tt:op_ternary] [nt:BareBoolean]
        "?" [tt:op_ternary] [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]
                "2" [tt:int_literal] [nt:int_literal]
            "==" [tt:op_eqeq] [nt:Operator]
                "$c" [tt:field_name] [nt:DirectFieldValue]
                "3" [tt:int_literal] [nt:int_literal]

