Autofix Rubocop Lint/AmbiguousOperatorPrecedence (mastodon#23681)

.rubocop_todo.yml

@@ -183,17 +183,6 @@ Lint/AmbiguousBlockAssociation:
     - 'spec/services/unsuspend_account_service_spec.rb'
     - 'spec/workers/scheduler/accounts_statuses_cleanup_scheduler_spec.rb'
 
-# Offense count: 17
-# This cop supports safe autocorrection (--autocorrect).
-Lint/AmbiguousOperatorPrecedence:
-  Exclude:
-    - 'app/controllers/concerns/rate_limit_headers.rb'
-    - 'app/lib/rate_limiter.rb'
-    - 'app/models/system_key.rb'
-    - 'app/models/webauthn_credential.rb'
-    - 'app/workers/concerns/exponential_backoff.rb'
-    - 'lib/paperclip/color_extractor.rb'
-
 # Offense count: 15
 # Configuration parameters: AllowedMethods.
 # AllowedMethods: enums

app/controllers/concerns/rate_limit_headers.rb

@@ -67,6 +67,6 @@ def request_time
   end
 
   def reset_period_offset
-    api_throttle_data[:period] - request_time.to_i % api_throttle_data[:period]
+    api_throttle_data[:period] - (request_time.to_i % api_throttle_data[:period])
   end
 end

app/lib/rate_limiter.rb

@@ -48,7 +48,7 @@ def to_headers(now = Time.now.utc)
     {
       'X-RateLimit-Limit' => @limit.to_s,
       'X-RateLimit-Remaining' => (@limit - (redis.get(key) || 0).to_i).to_s,
-      'X-RateLimit-Reset' => (now + (@period - now.to_i % @period)).iso8601(6),
+      'X-RateLimit-Reset' => (now + (@period - (now.to_i % @period))).iso8601(6),
     }
   end
 

app/models/system_key.rb

@@ -14,7 +14,7 @@ class SystemKey < ApplicationRecord
 
   before_validation :set_key
 
-  scope :expired, ->(now = Time.now.utc) { where(arel_table[:created_at].lt(now - ROTATION_PERIOD * 3)) }
+  scope :expired, ->(now = Time.now.utc) { where(arel_table[:created_at].lt(now - (ROTATION_PERIOD * 3))) }
 
   class << self
     def current_key

app/models/webauthn_credential.rb

@@ -18,5 +18,5 @@ class WebauthnCredential < ApplicationRecord
   validates :external_id, uniqueness: true
   validates :nickname, uniqueness: { scope: :user_id }
   validates :sign_count,
-            numericality: { only_integer: true, greater_than_or_equal_to: 0, less_than_or_equal_to: 2**63 - 1 }
+            numericality: { only_integer: true, greater_than_or_equal_to: 0, less_than_or_equal_to: (2**63) - 1 }
 end

app/workers/concerns/exponential_backoff.rb

@@ -5,7 +5,7 @@ module ExponentialBackoff
 
   included do
     sidekiq_retry_in do |count|
-      15 + 10 * (count**4) + rand(10 * (count**4))
+      15 + (10 * (count**4)) + rand(10 * (count**4))
     end
   end
 end

lib/paperclip/color_extractor.rb

@@ -79,8 +79,8 @@ def make
     private
 
     def w3c_contrast(color1, color2)
-      luminance1 = color1.to_xyz.y * 0.01 + 0.05
-      luminance2 = color2.to_xyz.y * 0.01 + 0.05
+      luminance1 = (color1.to_xyz.y * 0.01) + 0.05
+      luminance2 = (color2.to_xyz.y * 0.01) + 0.05
 
       if luminance1 > luminance2
         luminance1 / luminance2
@@ -109,11 +109,11 @@ def rgb_to_hsl(r, g, b)
 
         case max
         when r
-          h = (g - b) / d + (g < b ? 6.0 : 0)
+          h = ((g - b) / d) + (g < b ? 6.0 : 0)
         when g
-          h = (b - r) / d + 2.0
+          h = ((b - r) / d) + 2.0
         when b
-          h = (r - g) / d + 4.0
+          h = ((r - g) / d) + 4.0
         end
 
         h /= 6.0
@@ -126,9 +126,9 @@ def hue_to_rgb(p, q, t)
       t += 1 if t.negative?
       t -= 1 if t > 1
 
-      return (p + (q - p) * 6 * t) if t < 1 / 6.0
+      return (p + ((q - p) * 6 * t)) if t < 1 / 6.0
       return q if t < 1 / 2.0
-      return (p + (q - p) * (2 / 3.0 - t) * 6) if t < 2 / 3.0
+      return (p + ((q - p) * ((2 / 3.0) - t) * 6)) if t < 2 / 3.0
 
       p
     end
@@ -147,11 +147,11 @@ def hsl_to_rgb(h, s, l)
         g = l.to_f
         b = l.to_f # achromatic
       else
-        q = l < 0.5 ? l * (s + 1) : l + s - l * s
-        p = 2 * l - q
-        r = hue_to_rgb(p, q, h + 1 / 3.0)
+        q = l < 0.5 ? l * (s + 1) : l + s - (l * s)
+        p = (2 * l) - q
+        r = hue_to_rgb(p, q, h + (1 / 3.0))
         g = hue_to_rgb(p, q, h)
-        b = hue_to_rgb(p, q, h - 1 / 3.0)
+        b = hue_to_rgb(p, q, h - (1 / 3.0))
       end
 
       [(r * 255).round, (g * 255).round, (b * 255).round]