brew/Library/Homebrew/rubocops/no_fileutils_rmrf.rb
Issy Long 45978435e7
rubocop: Use Sorbet/StrictSigil as it's better than comments
- Previously I thought that comments were fine to discourage people from
  wasting their time trying to bump things that used `undef` that Sorbet
  didn't support. But RuboCop is better at this since it'll complain if
  the comments are unnecessary.

- Suggested in https://github.com/Homebrew/brew/pull/18018#issuecomment-2283369501.

- I've gone for a mixture of `rubocop:disable` for the files that can't
  be `typed: strict` (use of undef, required before everything else, etc)
  and `rubocop:todo` for everything else that should be tried to make
  strictly typed. There's no functional difference between the two as
  `rubocop:todo` is `rubocop:disable` with a different name.

- And I entirely disabled the cop for the docs/ directory since
  `typed: strict` isn't going to gain us anything for some Markdown
  linting config files.

- This means that now it's easier to track what needs to be done rather
  than relying on checklists of files in our big Sorbet issue:

```shell
$ git grep 'typed: true # rubocop:todo Sorbet/StrictSigil' | wc -l
    268
```

- And this is confirmed working for new files:

```shell
$ git status
On branch use-rubocop-for-sorbet-strict-sigils
Untracked files:
  (use "git add <file>..." to include in what will be committed)
        Library/Homebrew/bad.rb
        Library/Homebrew/good.rb

nothing added to commit but untracked files present (use "git add" to track)

$ brew style
Offenses:

bad.rb:1:1: C: Sorbet/StrictSigil: Sorbet sigil should be at least strict got true.
^^^^^^^^^^^^^

1340 files inspected, 1 offense detected
```
2024-08-12 15:24:27 +01:00

62 lines
1.9 KiB
Ruby

# typed: true # rubocop:todo Sorbet/StrictSigil
# frozen_string_literal: true
module RuboCop
module Cop
module Homebrew
# This cop checks for the use of `FileUtils.rm_f`, `FileUtils.rm_rf`, or `{FileUtils,instance}.rmtree`
# and recommends the safer versions.
class NoFileutilsRmrf < Base
extend AutoCorrector
MSG = "Use `rm` or `rm_r` instead of `rm_rf`, `rm_f`, or `rmtree`."
def_node_matcher :any_receiver_rm_r_f?, <<~PATTERN
(send
{(const {nil? cbase} :FileUtils) (self)}
{:rm_rf :rm_f}
...)
PATTERN
def_node_matcher :no_receiver_rm_r_f?, <<~PATTERN
(send nil? {:rm_rf :rm_f} ...)
PATTERN
def_node_matcher :no_receiver_rmtree?, <<~PATTERN
(send nil? :rmtree ...)
PATTERN
def_node_matcher :any_receiver_rmtree?, <<~PATTERN
(send !nil? :rmtree ...)
PATTERN
def on_send(node)
return if neither_rm_rf_nor_rmtree?(node)
add_offense(node) do |corrector|
class_name = "FileUtils." if any_receiver_rm_r_f?(node) || any_receiver_rmtree?(node)
new_method = if node.method?(:rm_rf) || node.method?(:rmtree)
"rm_r"
else
"rm"
end
args = if any_receiver_rmtree?(node)
node.receiver&.source || node.arguments.first&.source
else
node.arguments.first.source
end
args = "(#{args})" unless args.start_with?("(")
corrector.replace(node.loc.expression, "#{class_name}#{new_method}#{args}")
end
end
def neither_rm_rf_nor_rmtree?(node)
!any_receiver_rm_r_f?(node) && !no_receiver_rm_r_f?(node) &&
!any_receiver_rmtree?(node) && !no_receiver_rmtree?(node)
end
end
end
end
end