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 2223
2223:   def const_missing(const_name)
2224:     case const_name
2225:     when :Task
2226:       Rake.application.const_warning(const_name)
2227:       Rake::Task
2228:     when :FileTask
2229:       Rake.application.const_warning(const_name)
2230:       Rake::FileTask
2231:     when :FileCreationTask
2232:       Rake.application.const_warning(const_name)
2233:       Rake::FileCreationTask
2234:     when :RakeApp
2235:       Rake.application.const_warning(const_name)
2236:       Rake::Application
2237:     else
2238:       rake_original_const_missing(const_name)
2239:     end
2240:   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 60
60:   def rake_extension(method)
61:     if instance_methods.include?(method.to_s) || instance_methods.include?(method.to_sym)
62:       $stderr.puts "WARNING: Possible conflict with Rake extension: #{self}##{method} already exists"
63:     else
64:       yield
65:     end
66:   end