How can I look at the final code generated by the macros in Parity Substrate?

Question

Substrate uses a lot of macros to make it easier to write runtime modules:

construct_runtime!

decl_module!

decl_storage!

decl_event!

etc...

However, it is hard to understand what these macros actually do and what the final code looks like. How can I dig deeper into these macros and expansions?

Answer 1

Hi, try doing the following

cargo install cargo-expand

then just call it from your crate

cargo expand