Class
Module
In: lib/rake.rb
Parent: Object

Rake extensions to Module.

Methods

const_missing, rake_extension,
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 2014
2014:   def const_missing(const_name)
2015:     case const_name
2016:     when :Task
2017:       Rake.application.const_warning(const_name)
2018:       Rake::Task
2019:     when :FileTask
2020:       Rake.application.const_warning(const_name)
2021:       Rake::FileTask
2022:     when :FileCreationTask
2023:       Rake.application.const_warning(const_name)
2024:       Rake::FileCreationTask
2025:     when :RakeApp
2026:       Rake.application.const_warning(const_name)
2027:       Rake::Application
2028:     else
2029:       rake_original_const_missing(const_name)
2030:     end
2031:   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)
64:       $stderr.puts "WARNING: Possible conflict with Rake extension: #{self}##{method} already exists"
65:     else
66:       yield
67:     end
68:   end