--- /dev/null
+#
+# empty.rb
+#
+
+module Puppet::Parser::Functions
+ newfunction(:empty, :type => :rvalue, :doc => <<-EOS
+Returns true if the variable is empty.
+ EOS
+ ) do |arguments|
+
+ raise(Puppet::ParseError, "empty(): Wrong number of arguments " +
+ "given (#{arguments.size} for 1)") if arguments.size < 1
+
+ value = arguments[0]
+
+ unless value.is_a?(Array) || value.is_a?(Hash) || value.is_a?(String)
+ raise(Puppet::ParseError, 'empty(): Requires either ' +
+ 'array, hash or string to work with')
+ end
+
+ result = value.empty?
+
+ return result
+ end
+end
+
+# vim: set ts=2 sw=2 et :