Add bin and edit workflow

bin/gems/async-2.23.0/lib/async/variable.rb

@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+# Released under the MIT License.
+# Copyright, 2021-2024, by Samuel Williams.
+
+require_relative "condition"
+
+module Async
+	# A synchronization primitive that allows one task to wait for another task to resolve a value.
+	class Variable
+		# Create a new variable.
+		#
+		# @parameter condition [Condition] The condition to use for synchronization.
+		def initialize(condition = Condition.new)
+			@condition = condition
+			@value = nil
+		end
+		
+		# Resolve the value.
+		#
+		# Signals all waiting tasks.
+		#
+		# @parameter value [Object] The value to resolve.
+		def resolve(value = true)
+			@value = value
+			condition = @condition
+			@condition = nil
+			
+			self.freeze
+			
+			condition.signal(value)
+		end
+		
+		# Alias for {#resolve}.
+		def value=(value)
+			self.resolve(value)
+		end
+		
+		# Whether the value has been resolved.
+		#
+		# @returns [Boolean] Whether the value has been resolved.
+		def resolved?
+			@condition.nil?
+		end
+		
+		# Wait for the value to be resolved.
+		#
+		# @returns [Object] The resolved value.
+		def wait
+			@condition&.wait
+			return @value
+		end
+		
+		# Alias for {#wait}.
+		def value
+			self.wait
+		end
+	end
+end