Add unversioned? method to Cask::URL.

Library/Homebrew/cask/dsl.rb

@@ -173,12 +173,14 @@ module Cask
       @language_blocks.keys.flatten
     end
 
-    def url(*args)
-      set_unique_stanza(:url, args.empty? && !block_given?) do
+    def url(*args, **options)
+      caller_location = caller_locations[0]
+
+      set_unique_stanza(:url, args.empty? && options.empty? && !block_given?) do
         if block_given?
-          LazyObject.new { URL.new(*yield) }
+          LazyObject.new { URL.new(*yield, caller_location: caller_location) }
         else
-          URL.new(*args)
+          URL.new(*args, **options, caller_location: caller_location)
         end
       end
     end

Library/Homebrew/cask/url.rb

@@ -31,6 +31,7 @@ class URL
       header:          T.nilable(String),
       user_agent:      T.nilable(T.any(Symbol, String)),
       data:            T.nilable(T::Hash[String, String]),
+      caller_location: Thread::Backtrace::Location,
     ).returns(T.untyped)
   end
   def initialize(
@@ -46,8 +47,10 @@ class URL
     referer: nil,
     header: nil,
     user_agent: nil,
-    data: nil
+    data: nil,
+    caller_location: T.must(caller_locations).fetch(0)
   )
+
     @uri = URI(uri)
 
     specs = {}
@@ -65,5 +68,29 @@ class URL
     specs[:data]       = @data       = data
 
     @specs = specs.compact
+
+    @caller_location = caller_location
+  end
+
+  sig { returns(T.nilable(String)) }
+  def raw_interpolated_url
+    return @raw_interpolated_url if defined?(@raw_interpolated_url)
+
+    @raw_interpolated_url =
+      Pathname(@caller_location.absolute_path)
+      .each_line.drop(@caller_location.lineno - 1)
+      .first&.yield_self { |line| line[/url\s+"([^"]+)"/, 1] }
+  end
+  private :raw_interpolated_url
+
+  sig { params(ignore_major_version: T::Boolean).returns(T::Boolean) }
+  def unversioned?(ignore_major_version: false)
+    interpolated_url = raw_interpolated_url
+
+    return false unless interpolated_url
+
+    interpolated_url = interpolated_url.gsub(/\#{\s*version\s*\.major\s*}/, "") if ignore_major_version
+
+    interpolated_url.exclude?('#{')
   end
 end