Remove extensions and fully deprecate the gem

.gitignore

@@ -3,7 +3,6 @@
 /_yardoc/
 /coverage/
 /doc/
-/lib/
 /logs/
 /pkg/
 /spec/reports/

Gemfile

@@ -5,8 +5,6 @@ gemspec
 
 group :development do
   gem "rake"
-  gem "rake-compiler"
   gem "test-unit"
   gem "test-unit-ruby-core"
-  gem 'ruby-maven', :platforms => :jruby
 end

README.md

@@ -2,6 +2,8 @@
 
 This gem provides the feature for waiting until IO is readable or writable without blocking.
 
+**Note:** This gem is empty and deprecated. All functionality was moved into core Ruby as of version 3.2.
+
 ## Installation
 
 Add this line to your application's Gemfile:

Rakefile

@@ -1,37 +1,11 @@
 require "bundler/gem_tasks"
 require "rake/testtask"
 
-name = "io/wait"
-
-case
-when RUBY_ENGINE == "jruby"
-  require 'rake/javaextensiontask'
-  Rake::JavaExtensionTask.new("wait") do |ext|
-    require 'maven/ruby/maven'
-    ext.source_version = '1.8'
-    ext.target_version = '1.8'
-    ext.ext_dir = 'ext/java'
-    ext.lib_dir = 'lib/io'
-  end
-  task "build" => "lib/io/wait.jar"
-  task "lib/io/wait.jar" => "compile"
-  libs = ["ext/java/lib", "lib"]
-else
-  require 'rake/extensiontask'
-  extask = Rake::ExtensionTask.new(name) do |x|
-    x.lib_dir.sub!(%r[(?=/|\z)], "/#{RUBY_VERSION}/#{x.platform}")
-  end
-  libs = ["lib/#{RUBY_VERSION}/#{extask.platform}"]
-end
-
 Rake::TestTask.new(:test) do |t|
-  t.libs = libs
-  t.libs << "test/lib"
+  t.libs = ["lib", "test/lib"]
   t.ruby_opts << "-rhelper"
   t.options = "--ignore-name=/ungetc_in_text/"
   t.test_files = FileList["test/**/test_*.rb"]
 end
 
-task :test => :compile
-
 task :default => :test

io-wait.gemspec

@@ -6,20 +6,18 @@ Gem::Specification.new do |spec|
   spec.authors       = ["Nobu Nakada", "Charles Oliver Nutter"]
   spec.email         = ["nobu@ruby-lang.org", "headius@headius.com"]
 
-  spec.summary       = %q{Waits until IO is readable or writable without blocking.}
-  spec.description   = %q{Waits until IO is readable or writable without blocking.}
+  spec.summary       = %q{Deprecated: All functionality ships with Ruby 3.2 and higher.}
+  spec.description   = %q{Deprecated: All functionality ships with Ruby 3.2 and higher.}
   spec.homepage      = "https://github.com/ruby/io-wait"
   spec.licenses      = ["Ruby", "BSD-2-Clause"]
   spec.required_ruby_version = Gem::Requirement.new(">= 3.2")
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage
 
-  jruby = true if Gem::Platform.new('java') =~ spec.platform or RUBY_ENGINE == 'jruby'
   dir, gemspec = File.split(__FILE__)
   excludes = [
-    *%w[:^/.git* :^/Gemfile* :^/Rakefile* :^/bin/ :^/test/ :^/rakelib/ :^*.java],
-    *(jruby ? %w[:^/ext/io] : %w[:^/ext/java]),
+    *%w[:^/.git* :^/Gemfile* :^/Rakefile* :^/bin/ :^/test/ :^/rakelib/],
     ":(exclude,literal,top)#{gemspec}"
   ]
   files = IO.popen(%w[git ls-files -z --] + excludes, chdir: dir, &:read).split("\x0")
@@ -28,12 +26,4 @@ Gem::Specification.new do |spec|
   spec.bindir        = "exe"
   spec.executables   = []
   spec.require_paths = ["lib"]
-
-  if jruby
-    spec.platform = 'java'
-    spec.files << "lib/io/wait.jar"
-    spec.require_paths += ["ext/java/lib"]
-  else
-    spec.extensions    = %w[ext/io/wait/extconf.rb]
-  end
 end

lib/io/wait.rb

@@ -0,0 +1 @@
+warn "The io-wait gem is deprecated; all functionality ships with Ruby 3.2 and higher."