const_resolver.rb

# Given a constant's name of the form r = "One::Two::[...]::ThirtyFive",
# resolve its value.
sep = "::" # Doesn't appear that '::' is defined.
c = r.split(sep).inject(Object) { |memo, el| memo.const_get(el) }

# Usage:
module Foo
  module Bar
    Baz = 100
  end
end

r = "Foo::Bar::Baz"
c = r.split(sep).inject(Object) { |memo, el| memo.const_get(el) }
# => 100