Is there any way to collect method chains?

[callanchen]

I'm writing a lint, but I want to get the names of all function calls in a chain.

How should I do this?

Such as:

let _ = S::build()
     .fun1()
     .fun2()
     .fun3();

I can get the Expr of "S::build()", but I can not find a good way to collect other function names in the chain.

[callanchen]

I find a help function in clippy_utils. I close the issue.