Dear Rust community,
As a library author, one of my goals is to have the library be usable by many consumers. Concretely, the library should be written in a language that can be executed on many different runtimes, such as the web, the JVM, the CLR (.NET), and also on small runtimes like those of Rust, C and C++. Ideally, libraries that don’t do any IO, for example a maths library, can be compiled to any runtime.
I’m wondering whether (safe) Rust is the ideal candidate for a ‘library language’, which can compile to many runtimes and run on them directly.
I feel like a big differentiator between runtimes is in whether or not there is a GC. Targeting a GC runtime requires that the source language does not do any pointer arithmetic, which, correct me if I’m wrong, safe Rust does not, while targeting a non-GC runtime means the source language must explicitly deallocate memory, which Rust can do. These two parts give me the impression that Rust could target most runtimes. Does that make sense?
Concretely, would it be feasible to compile safe Rust to JVM byte-code? Looking at samples of safe-Rust code, this seems to map well to GC language, but looking at the Rust compiler’s MIR language, it seems quite a bit farther away. What are your thoughts?
Thanks a lot for sharing your thoughts,