Rake extensions to Module.

Methods
Public Instance methods
const_missing(const_name)

Check for deprecated uses of top level (i.e. in Object) uses of Rake class names. If someone tries to reference the constant name, display a warning and return the proper object. Using the —classic-namespace command line option will define these constants in Object and avoid this handler.

      # File lib/rake.rb, line 2454
2454:   def const_missing(const_name)
2455:     case const_name
2456:     when :Task
2457:       Rake.application.const_warning(const_name)
2458:       Rake::Task
2459:     when :FileTask
2460:       Rake.application.const_warning(const_name)
2461:       Rake::FileTask
2462:     when :FileCreationTask
2463:       Rake.application.const_warning(const_name)
2464:       Rake::FileCreationTask
2465:     when :RakeApp
2466:       Rake.application.const_warning(const_name)
2467:       Rake::Application
2468:     else
2469:       rake_original_const_missing(const_name)
2470:     end
2471:   end
rake_extension(method) {|| ...}

Check for an existing method in the current class before extending. IF the method already exists, then a warning is printed and the extension is not added. Otherwise the block is yielded and any definitions in the block will take effect.

Usage:

  class String
    rake_extension("xyz") do
      def xyz
        ...
      end
    end
  end
    # File lib/rake.rb, line 62
62:   def rake_extension(method)
63:     if instance_methods.include?(method.to_s) || instance_methods.include?(method.to_sym)
64:       $stderr.puts "WARNING: Possible conflict with Rake extension: #{self}##{method} already exists"
65:     else
66:       yield
67:     end
68:   end