Add bin and edit workflow

bin/gems/io-event-1.9.0/lib/io/event/support.rb

@@ -0,0 +1,57 @@
+# frozen_string_literal: true
+
+# Released under the MIT License.
+# Copyright, 2022-2024, by Samuel Williams.
+
+class IO
+	module Event
+		# Helper methods for detecting support for various features.
+		module Support
+			# Some features are only availble if the IO::Buffer class is available.
+			#
+			# @returns [Boolean] Whether the IO::Buffer class is available.
+			def self.buffer?
+				IO.const_defined?(:Buffer)
+			end
+			
+			# The basic fiber scheduler was introduced along side the IO::Buffer class.
+			#
+			# @returns [Boolean] Whether the IO::Buffer class is available.
+			#
+			# To be removed on 31 Mar 2025.
+			def self.fiber_scheduler_v1?
+				IO.const_defined?(:Buffer)
+			end
+			
+			# More advanced read/write methods and blocking controls were introduced in Ruby 3.2.
+			#
+			# To be removed on 31 Mar 2026.
+			def self.fiber_scheduler_v2?
+				# Some interface changes were back-ported incorrectly:
+				# https://github.com/ruby/ruby/pull/10778
+				# Specifically "Improvements to IO::Buffer read/write/pread/pwrite."
+				# Missing correct size calculation.
+				return false if RUBY_VERSION >= "3.2.5"
+				
+				IO.const_defined?(:Buffer) and Fiber.respond_to?(:blocking) and IO::Buffer.instance_method(:read).arity == -1
+			end
+			
+			# Updated inferfaces for read/write and IO::Buffer were introduced in Ruby 3.3, including pread/pwrite.
+			#
+			# To become the default 31 Mar 2026.
+			def self.fiber_scheduler_v3?
+				if fiber_scheduler_v2?
+					return true if RUBY_VERSION >= "3.3"
+					
+					# Feature detection if required:
+					begin
+						IO::Buffer.new.slice(0, 0).write(STDOUT)
+						return true
+					rescue
+						return false
+					end
+				end
+			end
+		end
+	end
+end