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#
# union.rb
#
module Puppet::Parser::Functions
newfunction(:union, :type => :rvalue, :doc => <<-EOS
This function returns a union of two or more arrays.
*Examples:*
union(["a","b","c"],["b","c","d"])
Would return: ["a","b","c","d"]
EOS
) do |arguments|
# Check that 2 or more arguments have been given ...
raise(Puppet::ParseError, "union(): Wrong number of arguments " +
"given (#{arguments.size} for < 2)") if arguments.size < 2
arguments.each do |argument|
raise(Puppet::ParseError, 'union(): Every parameter must be an array') unless argument.is_a?(Array)
end
arguments.reduce(:|)
end
end
# vim: set ts=2 sw=2 et :
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