Processing a complex syntax with Rust’s declarative macros

I am by no means a Rust expert, and I’m no expert on declarative macros. I was merely solving an issue I had: there was a lot of redundancy in the way my error types were coded. I didn’t want to repeat the same coding patterns all the time, yet the types also seemed too heterogenous for declarative macros. And going with procedural macros wasn’t worth the effort in this case.

After some experimentation I figured out how declarative macros …

case coding error expert issue macros patterns redundancy rust scenario types work