The Letlang Abstract Syntax Tree MUST be translated to Rust code.
Once the AST has been validated by a semantic walk, the generated code SHOULD be valid and not produce compilation errors.
If for some reason, the previous requirement cannot be satisfied, the generated code SHOULD include comments that will appear in the Rust compiler’s error report.
Those comments SHOULD be used to pin-point the error back to the Letlang source file.
foo(); // file="example/foo.let" line=8 column=4