# a class with no superclass specified class Foo end # a class where the superclass is a constant class Bar < BaseClass end # a class where the superclass is a call expression class Baz < superclass_for(:baz) end # a class where the name is a scope resolution module MyModule; end class MyModule::MyClass end # a class with various expressions class Wibble def method_a puts 'a' end def method_b puts 'b' end some_method_call() $global_var = 123 class ClassInWibble end module ModuleInWibble end end # a singleton class with some methods and some other arbitrary expressions x = 'hello' class << x def length 100 * super end def wibble puts 'wibble' end another_method_call $global_var2 = 456 end # a class where the name is a scope resolution using the global scope class ::MyClassInGlobalScope end