Essentially yes. Macros in Rust are very powerful, similar to Lisp macros (although they are naturally clunkier).

As you would expect, you will find macros for HTML, JSON etc. in libraries, but there are also quite a bunch of smaller, frequent macros that simply reduce common boilerplate.

rust allows for procedural macros (basically a function that takes a token stream and returns a token stream, and yes you can do parsing in this funciton

https://doc.rust-lang.org/reference/procedural-macros.html