--- /dev/null
+#
+# pry.rb
+#
+
+module Puppet::Parser::Functions
+ newfunction(:pry, :type => :statement, :doc => <<-EOS
+This function invokes a pry debugging session in the current scope object. This is useful for debugging manifest code at specific points during a compilation.
+
+*Examples:*
+
+ pry()
+ EOS
+ ) do |arguments|
+ begin
+ require 'pry'
+ rescue LoadError
+ raise(Puppet::Error, "pry(): Requires the 'pry' rubygem to use, but it was not found")
+ end
+ #
+ ## Run `catalog` to see the contents currently compiling catalog
+ ## Run `cd catalog` and `ls` to see catalog methods and instance variables
+ ## Run `@resource_table` to see the current catalog resource table
+ #
+ if $stdout.isatty
+ binding.pry # rubocop:disable Lint/Debugger
+ else
+ Puppet.warning 'pry(): cowardly refusing to start the debugger on a daemonized master'
+ end
+ end
+end