brew/Library/Homebrew/context.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

83 lines
1.5 KiB
Ruby

# typed: true # rubocop:todo Sorbet/StrictSigil
# frozen_string_literal: true
require "monitor"
# Module for querying the current execution context.
module Context
extend MonitorMixin
def self.current=(context)
synchronize do
@current = context
end
end
def self.current
if (current_context = Thread.current[:context])
return current_context
end
synchronize do
@current ||= ContextStruct.new
end
end
# Struct describing the current execution context.
class ContextStruct
def initialize(debug: nil, quiet: nil, verbose: nil)
@debug = debug
@quiet = quiet
@verbose = verbose
end
sig { returns(T::Boolean) }
def debug?
@debug == true
end
sig { returns(T::Boolean) }
def quiet?
@quiet == true
end
sig { returns(T::Boolean) }
def verbose?
@verbose == true
end
end
sig { returns(T::Boolean) }
def debug?
Context.current.debug?
end
sig { returns(T::Boolean) }
def quiet?
Context.current.quiet?
end
sig { returns(T::Boolean) }
def verbose?
Context.current.verbose?
end
def with_context(**options)
old_context = Context.current
new_context = ContextStruct.new(
debug: options.fetch(:debug, old_context&.debug?),
quiet: options.fetch(:quiet, old_context&.quiet?),
verbose: options.fetch(:verbose, old_context&.verbose?),
)
Thread.current[:context] = new_context
begin
yield
ensure
Thread.current[:context] = old_context
end
end
end