[rubygems/rubygems] Consolidated the Ruby version list:

- We keep 2 list of supported ruby versions and each time a new ruby
  version is released we need to maintain both list. Forgetting
  to update one would prevent users from adding gem for a specific
  plaftorm (i.e. ruby/rubygems@7cd19d824d17 and ruby/rubygems@5462322f8f0c).

  Extracted the list from the Dependency class and moved it to the
  CurrentRuby class (which I believe was originally added for that
  reason).

ruby/rubygems@a91edd6c1f

Author: Edouard-chin

lib/bundler/current_ruby.rb

@@ -9,26 +9,9 @@ def self.current_ruby
   end
 
   class CurrentRuby
-    KNOWN_MINOR_VERSIONS = %w[
-      1.8
-      1.9
-      2.0
-      2.1
-      2.2
-      2.3
-      2.4
-      2.5
-      2.6
-      2.7
-      3.0
-      3.1
-      3.2
-      3.3
-      3.4
-      3.5
-    ].freeze
-
-    KNOWN_MAJOR_VERSIONS = KNOWN_MINOR_VERSIONS.map {|v| v.split(".", 2).first }.uniq.freeze
+    ALL_RUBY_VERSIONS = (18..27).to_a.concat((30..35).to_a).freeze
+    KNOWN_MINOR_VERSIONS = ALL_RUBY_VERSIONS.map {|v| v.digits.reverse.join(".") }.freeze
+    KNOWN_MAJOR_VERSIONS = ALL_RUBY_VERSIONS.map {|v| v.digits.last.to_s }.uniq.freeze
 
     KNOWN_PLATFORMS = %w[
       jruby

lib/bundler/dependency.rb

@@ -9,19 +9,18 @@ class Dependency < Gem::Dependency
     attr_reader :autorequire
     attr_reader :groups, :platforms, :gemfile, :path, :git, :github, :branch, :ref, :glob
 
-    ALL_RUBY_VERSIONS = (18..27).to_a.concat((30..35).to_a).freeze
     PLATFORM_MAP = {
-      ruby: [Gem::Platform::RUBY, ALL_RUBY_VERSIONS],
-      mri: [Gem::Platform::RUBY, ALL_RUBY_VERSIONS],
+      ruby: [Gem::Platform::RUBY, CurrentRuby::ALL_RUBY_VERSIONS],
+      mri: [Gem::Platform::RUBY, CurrentRuby::ALL_RUBY_VERSIONS],
       rbx: [Gem::Platform::RUBY],
       truffleruby: [Gem::Platform::RUBY],
       jruby: [Gem::Platform::JAVA, [18, 19]],
-      windows: [Gem::Platform::WINDOWS, ALL_RUBY_VERSIONS],
+      windows: [Gem::Platform::WINDOWS, CurrentRuby::ALL_RUBY_VERSIONS],
       # deprecated
-      mswin: [Gem::Platform::MSWIN, ALL_RUBY_VERSIONS],
-      mswin64: [Gem::Platform::MSWIN64, ALL_RUBY_VERSIONS - [18]],
-      mingw: [Gem::Platform::MINGW, ALL_RUBY_VERSIONS],
-      x64_mingw: [Gem::Platform::X64_MINGW, ALL_RUBY_VERSIONS - [18, 19]],
+      mswin: [Gem::Platform::MSWIN, CurrentRuby::ALL_RUBY_VERSIONS],
+      mswin64: [Gem::Platform::MSWIN64, CurrentRuby::ALL_RUBY_VERSIONS - [18]],
+      mingw: [Gem::Platform::MINGW, CurrentRuby::ALL_RUBY_VERSIONS],
+      x64_mingw: [Gem::Platform::X64_MINGW, CurrentRuby::ALL_RUBY_VERSIONS - [18, 19]],
     }.each_with_object({}) do |(platform, spec), hash|
       hash[platform] = spec[0]
       spec[1]&.each {|version| hash[:"#{platform}_#{version}"] = spec[0] }