Add bin and edit workflow

bin/gems/sass-embedded-1.83.4-x86_64-linux-gnu/lib/sass/compiler/channel.rb

@@ -0,0 +1,68 @@
+# frozen_string_literal: true
+
+module Sass
+  class Compiler
+    # The {Channel} class.
+    #
+    # It manages the lifecycle of {Dispatcher}.
+    class Channel
+      def initialize(dispatcher_class)
+        @dispatcher_class = dispatcher_class
+        @dispatcher = @dispatcher_class.new
+        @mutex = Mutex.new
+      end
+
+      def close
+        @mutex.synchronize do
+          unless @dispatcher.nil?
+            @dispatcher.close
+            @dispatcher = nil
+          end
+        end
+      end
+
+      def closed?
+        @mutex.synchronize do
+          @dispatcher.nil?
+        end
+      end
+
+      def stream(host)
+        @mutex.synchronize do
+          raise IOError, 'closed compiler' if @dispatcher.nil?
+
+          Stream.new(@dispatcher, host)
+        rescue Errno::EBUSY
+          @dispatcher = @dispatcher_class.new
+          Stream.new(@dispatcher, host)
+        end
+      end
+
+      # The {Stream} between {Dispatcher} and {Host}.
+      class Stream
+        attr_reader :id
+
+        def initialize(dispatcher, host)
+          @dispatcher = dispatcher
+          @id = @dispatcher.subscribe(host)
+        end
+
+        def close
+          @dispatcher.unsubscribe(@id)
+        end
+
+        def error(...)
+          @dispatcher.error(...)
+        end
+
+        def send_proto(...)
+          @dispatcher.send_proto(...)
+        end
+      end
+
+      private_constant :Stream
+    end
+
+    private_constant :Channel
+  end
+end