backtrace.rb in sentry-raven-3.0.1

- old
+ new

@@ -1,22 +1,24 @@
+# frozen_string_literal: true
+
 ## Inspired by Rails' and Airbrake's backtrace parsers.
 
 module Raven
   # Front end to parsing the backtrace for each notice
   class Backtrace
     # Handles backtrace parsing line by line
     class Line
-      RB_EXTENSION = ".rb".freeze
+      RB_EXTENSION = ".rb"
       # regexp (optional leading X: on windows, or JRuby9000 class-prefix)
       RUBY_INPUT_FORMAT = /
         ^ \s* (?: [a-zA-Z]: | uri:classloader: )? ([^:]+ | <.*>):
         (\d+)
         (?: :in \s `([^']+)')?$
-      /x
+      /x.freeze
 
       # org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:170)
-      JAVA_INPUT_FORMAT = /^(.+)\.([^\.]+)\(([^\:]+)\:(\d+)\)$/
+      JAVA_INPUT_FORMAT = /^(.+)\.([^\.]+)\(([^\:]+)\:(\d+)\)$/.freeze
 
       # The file portion of the line (such as app/models/user.rb)
       attr_reader :file
 
       # The line number portion of the line
@@ -72,20 +74,20 @@
         "<Line:#{self}>"
       end
 
       def self.in_app_pattern
         @in_app_pattern ||= begin
-          project_root = Raven.configuration.project_root && Raven.configuration.project_root.to_s
+          project_root = Raven.configuration.project_root&.to_s
           Regexp.new("^(#{project_root}/)?#{Raven.configuration.app_dirs_pattern || APP_DIRS_PATTERN}")
         end
       end
 
       private
 
       attr_writer :file, :number, :method, :module_name
     end
 
-    APP_DIRS_PATTERN = /(bin|exe|app|config|lib|test)/
+    APP_DIRS_PATTERN = /(bin|exe|app|config|lib|test)/.freeze
 
     # holder for an Array of Backtrace::Line instances
     attr_reader :lines
 
     def self.parse(backtrace, opts = {})