Add pry() function from hunner-pry

1 files changed, 30 insertions, 0 deletions

diff --git a/lib/puppet/parser/functions/pry.rb b/lib/puppet/parser/functions/pry.rb
new file mode 100644
index 0000000..c18ef7e
--- /dev/null
+++ b/lib/puppet/parser/functions/pry.rb
@@ -0,0 +1,30 @@
+#
+# 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