Class: Module

Inherits:
Object
  • Object
show all
Defined in:
lib/rake/ext/core.rb

Instance Method Summary collapse

Instance Method Details

#rake_extension(method) ⇒ Object

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



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# File 'lib/rake/ext/core.rb', line 18

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