###################################################################### # Core extension library # class Module # 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 # def rake_extension(method) if method_defined?(method) $stderr.puts "WARNING: Possible conflict with Rake extension: " + "#{self}##{method} already exists" else yield end end end