No, because the program may not be able to actually understand the syntax of your favorite programming language. As I mentioned in another comment, FRACTRAN is Turing-complete and you cannot just shove a string of Rust code at it because it has no idea what a string is; the best you can do is implement the "compiler" as working on some numerically-encoded version of Rust and producing some encoded version of a native binary on the other side. So you've lost the syntax because you've had to do that additional encoding.
But your computer does understand the distinction between a string numerically encoded as consecutive bytes in memory, versus a string encoded as a arbitrary-precision integer equal to ( 2^(first ASCII value) * 3^(second ASCII value) * 5^(third '') * 7^(fourth '') * ... ).
