Add RBS type signatures

.github/workflows/sig.yml

@@ -0,0 +1,18 @@
+name: sig
+
+on: [push, pull_request]
+
+jobs:
+  sig:
+    runs-on: ubuntu-latest
+    env:
+      BUNDLE_WITH: sig
+    steps:
+    - uses: actions/checkout@v6
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: "4.0"
+        bundler-cache: true
+    - name: Run RBS test
+      run: bundle exec rake rbs:test

.github/workflows/typecheck.yml

@@ -0,0 +1,16 @@
+name: typecheck
+
+on: [push, pull_request]
+
+jobs:
+  steep:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v6
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: "4.0"
+        bundler-cache: true
+    - name: Type check
+      run: bundle exec rake steep

Gemfile

@@ -3,5 +3,11 @@ source "https://rubygems.org"
 gemspec
 
 gem "rake"
+gem "steep"
 gem "test-unit"
 gem "test-unit-ruby-core"
+
+group :sig do
+  gem "rbs"
+  gem "rdoc"
+end

Rakefile

@@ -1,10 +1,33 @@
 require "bundler/gem_tasks"
 require "rake/testtask"
+require "tmpdir"
 
 Rake::TestTask.new(:test) do |t|
   t.libs << "test/lib"
   t.ruby_opts << "-rhelper"
   t.test_files = FileList["test/**/test_*.rb"]
 end
 
+desc "Type check with Steep"
+task :steep do
+  sh "steep check"
+end
+
+namespace :rbs do
+  Rake::TestTask.new(:test) do |t|
+    t.libs << "test_sig"
+    t.ruby_opts << "-rtest_helper"
+    t.test_files = FileList["test_sig/test_*.rb"]
+  end
+
+  desc "Update public RBS comments from local RDoc"
+  task :annotate do
+    Dir.mktmpdir do |tmpdir|
+      sh "rdoc", "--ri", "--output", "#{tmpdir}/doc", "--root=.", "lib", "doc"
+      sh "rbs", "annotate", "--no-system", "--no-gems", "--no-site", "--no-home",
+         "-d", "#{tmpdir}/doc", "sig/net-http.rbs"
+    end
+  end
+end
+
 task :default => :test

Steepfile

@@ -0,0 +1,17 @@
+target :lib do
+  check "lib"
+  signature "sig"
+
+  library "cgi"
+  library "open-uri"
+  library "net-protocol"
+  library "openssl"
+  library "resolv"
+  library "securerandom"
+  library "socket"
+  library "strscan"
+  library "tempfile"
+  library "timeout"
+  library "uri"
+  library "zlib"
+end