Add bin and edit workflow

bin/gems/concurrent-ruby-1.3.5/lib/concurrent-ruby/concurrent/utility/engine.rb

@@ -0,0 +1,45 @@
+module Concurrent
+  # @!visibility private
+  module Utility
+
+    # @!visibility private
+    module EngineDetector
+      def on_cruby?
+        RUBY_ENGINE == 'ruby'
+      end
+
+      def on_jruby?
+        RUBY_ENGINE == 'jruby'
+      end
+
+      def on_truffleruby?
+        RUBY_ENGINE == 'truffleruby'
+      end
+
+      def on_windows?
+        !(RbConfig::CONFIG['host_os'] =~ /mswin|mingw|cygwin/).nil?
+      end
+
+      def on_osx?
+        !(RbConfig::CONFIG['host_os'] =~ /darwin|mac os/).nil?
+      end
+
+      def on_linux?
+        !(RbConfig::CONFIG['host_os'] =~ /linux/).nil?
+      end
+
+      def ruby_version(version = RUBY_VERSION, comparison, major, minor, patch)
+        result      = (version.split('.').map(&:to_i) <=> [major, minor, patch])
+        comparisons = { :== => [0],
+                        :>= => [1, 0],
+                        :<= => [-1, 0],
+                        :>  => [1],
+                        :<  => [-1] }
+        comparisons.fetch(comparison).include? result
+      end
+    end
+  end
+
+  # @!visibility private
+  extend Utility::EngineDetector
+end