I don’t see what that has to with the IDE. Just grab a parser/ast library for your language.

I’ve written a few of my own refactorings for big design changes that might touch e.g. every view in a huge application in ways no series of regexes could cover.

It’s hard work. Definitely one of those tricky “cost of automation” decisions. You can do an awful lot of dumb grunt work in the time it takes to debug a refactoring.