From 41150862840af1ceb61eace883117ae72ead5941 Mon Sep 17 00:00:00 2001
From: Markus Reiter <me@reitermark.us>
Date: Sat, 21 Nov 2020 13:29:44 +0100
Subject: [PATCH] Add Sorbet plugin for `delegate`.

---
 Library/Homebrew/sorbet/plugins/delegate.rb | 21 +++++++++++++++++++++
 Library/Homebrew/sorbet/triggers.yml        |  1 +
 2 files changed, 22 insertions(+)
 create mode 100644 Library/Homebrew/sorbet/plugins/delegate.rb

diff --git a/Library/Homebrew/sorbet/plugins/delegate.rb b/Library/Homebrew/sorbet/plugins/delegate.rb
new file mode 100644
index 0000000000..2f308cc45d
--- /dev/null
+++ b/Library/Homebrew/sorbet/plugins/delegate.rb
@@ -0,0 +1,21 @@
+# typed: strict
+# frozen_string_literal: true
+
+source = ARGV[5]
+
+methods = if (single = source[/delegate\s+([^:]+):\s+/, 1])
+  [single]
+else
+  multiple = source[/delegate\s+\[(.*?)\]\s+=>\s+/m, 1]
+  non_comments = multiple.gsub(/\#.*$/, "")
+  non_comments.scan(/:([^:,\s]+)/).flatten
+end
+
+methods.each do |method|
+  puts <<~RUBY
+    # typed: strict
+
+    sig {params(arg0: T.untyped).returns(T.untyped)}
+    def #{method}(*arg0); end
+  RUBY
+end
diff --git a/Library/Homebrew/sorbet/triggers.yml b/Library/Homebrew/sorbet/triggers.yml
index 48a007d979..115f740ea8 100644
--- a/Library/Homebrew/sorbet/triggers.yml
+++ b/Library/Homebrew/sorbet/triggers.yml
@@ -4,3 +4,4 @@ ruby_extra_args:
 triggers:
   using: sorbet/plugins/unpack_strategy_magic.rb
   attr_predicate: sorbet/plugins/attr_predicate.rb
+  delegate: sorbet/plugins/delegate.rb