I find that Rust's syntax/ecosystem is much more modern and pleasant to use. Some examples are: pattern matching, immutable variable, better build and dependency system, and many more.<p>There are some concepts like lifetime that you have to learn. But you can always use unsafe pointer and look at Rust as a modern version of C.
I found a LALR grammar for Rust on GitHub, compatible with Bison.<p>But it does not closely track the published Rust Grammar nor syntax rules in the Rust Reference. (See Rust-lang DOT org site.)<p>Although perhaps a Rust grammar could be extracted from the syntax rules in the Reference doc, it may be incomplete.
For example, how do "as-yet-undocumented features" affect the current syntax rules in the Rust Reference?<p>So for now, it looks like C is easier to parse than Rust.