# File lib/extlib/module.rb, line 2
2:   def find_const(const_name)
3:     if const_name[0..1] == '::'
4:       Object.full_const_get(const_name[2..-1])
5:     else
6:       nested_const_lookup(const_name)
7:     end
8:   end

    # File lib/extlib/module.rb, line 10
10:   def try_dup
11:     self
12:   end

    # File lib/extlib/module.rb, line 17
17:   def nested_const_lookup(const_name)
18:     unless equal?(Object)
19:       constants = []
20: 
21:       name.split('::').each do |part|
22:         const = constants.last || Object
23:         constants << const.const_get(part)
24:       end
25: 
26:       parts = const_name.split('::')
27: 
28:       # from most to least specific constant, use each as a base and try
29:       # to find a constant with the name const_name within them
30:       constants.reverse_each do |const|
31:         # return the nested constant if available
32:         return const if parts.all? do |part|
33:           const = if RUBY_VERSION >= '1.9.0'
34:             const.const_defined?(part, false) ? const.const_get(part, false) : nil
35:           else
36:             const.const_defined?(part) ? const.const_get(part) : nil
37:           end
38:         end
39:       end
40:     end
41: 
42:     # no relative constant found, fallback to an absolute lookup and
43:     # use const_missing if not found
44:     Object.full_const_get(const_name)
45:   end