Hello everyone! Just wanted to announce a neat project I've been working on: Resyntax <https://github.com/jackfirth/resyntax/>, a tool for refactoring racket code. Currently the tool is able to replace various uses of `let` forms with `define`, as can be seen in this pull request <https://github.com/racket/scribble/pull/289>.
The tool works by hooking in to the racket macro expander and applying *refactoring rules* to the code as it's being expanded, where a refactoring rule is a syntax-parse macro that says how to rewrite some code pattern. You can see all of the refactoring rules I've implemented so far in the resyntax/refactoring-rule <https://github.com/jackfirth/resyntax/blob/master/refactoring-rule.rkt> module. Resyntax is in the early stages. It works well enough when run manually on single files, and it has some nice features already: - Output is correctly indented - Rules are hygienic, so Resyntax's rules for replacing `let` with `define` won't run on code where `let` is bound to something other than the `let` from `racket/base`. - If a rule leaves a subform untouched, the formatting of that form is left completely unchanged by the tool. But it's got some issues that need to be worked out: - No public API for running it. - No documentation on how to create your own refactoring rules. - Deletes comments sometimes. - Doesn't enforce that code produced by a refactoring rule actually compiles. - Current rules are not all that robust yet and may sometimes produce buggy or badly formatted code. If you're interested in following along with Resyntax's development, see the github repository <https://github.com/jackfirth/resyntax/>. If you've got some suggestions for rules, follow the guidance in this github issue <https://github.com/jackfirth/resyntax/issues/8> to tell me all about your ideas. And, as usual, I can be reached by email and in the racket Slack and Discord servers. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/93f92eb3-00ad-4b59-818a-7848e984f7ecn%40googlegroups.com.
