parsepson.rb

# frozen_string_literal: true

#
# parsepson.rb
#
module Puppet::Parser::Functions
  newfunction(:parsepson, type: :rvalue, doc: <<-DOC
    @summary
      This function accepts PSON, a Puppet variant of JSON, as a string and then converts it into the correct
      Puppet structure

    @return
      convert PSON into Puppet structure

    > *Note:*
      The optional second argument can be used to pass a default value that will
      be returned if the parsing of YAML string have failed.
      For more information on PSON please see the following link:
      https://puppet.com/docs/puppet/7/http_api/pson.html
  DOC
  ) do |arguments|
    raise ArgumentError, 'Wrong number of arguments. 1 or 2 arguments should be provided.' unless arguments.length >= 1

    begin
      PSON.load(arguments[0]) || arguments[1]
    rescue StandardError => e
      raise e unless arguments[1]
      arguments[1]
    end
  end
end

# vim: set ts=2 sw=2 et :