Method: Puppet::Functions::Function3x.from_to_names

Defined in:
lib/puppet/functions.rb

.from_to_names(func_info) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Compute min and max number of arguments and a list of constructed parameter names p0 - pn (since there are no parameter names in 3x functions).



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# File 'lib/puppet/functions.rb', line 781

def self.from_to_names(func_info)
  arity = func_info[:arity]
  if arity.nil?
    arity = -1
  end
  if arity < 0
    from = -arity - 1 # arity -1 is 0 min param, -2 is min 1 param
    to = :default     # infinite range
    count = -arity    # the number of named parameters
  else
    count = from = to = arity
  end
  # Names of parameters, up to 5 are optimized and use frozen version
  # Note that (0..count-1) produces expected empty array for count == 0, 0-n for count >= 1
  names = count <= 5 ? PARAM_NAMES[count] : (0..count - 1).map { |n| "p#{n}" }
  [from, to, names]
end