Add Options class and switch Application to use it instead of anonymous Struct

lib/rake.rb

@@ -43,6 +43,7 @@ module Rake; end
 require_relative "rake/rake_module"
 require_relative "rake/trace_output"
 require_relative "rake/pseudo_status"
+require_relative "rake/options"
 require_relative "rake/task_arguments"
 require_relative "rake/invocation_chain"
 require_relative "rake/task"

lib/rake/application.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 require "optparse"
 
+require_relative "options"
 require_relative "task_manager"
 require_relative "file_list"
 require_relative "thread_pool"
@@ -165,13 +166,7 @@ def add_loader(ext, loader)
 
     # Application options from the command line
     def options
-      @options ||= Struct.new(
-        :always_multitask, :backtrace, :build_all, :dryrun,
-        :ignore_deprecate, :ignore_system, :job_stats, :load_system,
-        :nosearch, :rakelib, :show_all_tasks, :show_prereqs,
-        :show_task_pattern, :show_tasks, :silent, :suppress_backtrace_pattern,
-        :thread_pool_size, :trace, :trace_output, :trace_rules
-      ).new
+      @options ||= Options.new
     end
 
     # Return the thread pool used for multithreaded processing.

lib/rake/options.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module Rake
+
+  ##
+  # Options used by the Rake command line application.
+  #
+  class Options
+    attr_accessor :always_multitask
+    attr_accessor :backtrace
+    attr_accessor :build_all
+    attr_accessor :dryrun
+    attr_accessor :ignore_deprecate
+    attr_accessor :ignore_system
+    attr_accessor :job_stats
+    attr_accessor :load_system
+    attr_accessor :nosearch
+    attr_accessor :rakelib
+    attr_accessor :show_all_tasks
+    attr_accessor :show_prereqs
+    attr_accessor :show_task_pattern
+    attr_accessor :show_tasks
+    attr_accessor :silent
+    attr_accessor :suppress_backtrace_pattern
+    attr_accessor :thread_pool_size
+    attr_accessor :trace
+    attr_accessor :trace_output
+    attr_accessor :trace_rules
+  end
+
+end