Add puppet absolute path resources

Author: Domenic Del Nano

lib/puppet/functions/is_absolute_path.rb

@@ -0,0 +1,15 @@
+Puppet::Functions.create_function(:is_absolute_path) do
+  dispatch :deprecation_gen do
+    param 'Any', :scope
+    repeated_param 'Any', :args
+  end
+  # Workaround PUP-4438 (fixed: https://github.com/puppetlabs/puppet/commit/e01c4dc924cd963ff6630008a5200fc6a2023b08#diff-c937cc584953271bb3d3b3c2cb141790R221) to support puppet < 4.1.0 and puppet < 3.8.1.
+  def call(scope, *args)
+    manipulated_args = [scope] + args
+    self.class.dispatcher.dispatch(self, scope, manipulated_args)
+  end
+  def deprecation_gen(scope, *args)
+    call_function('deprecation', 'is_absolute_path', "This method is deprecated, please use match expressions with Stdlib::Compat::Absolute_Path instead. They are described at https://docs.puppet.com/puppet/latest/reference/lang_data_type.html#match-expressions.")
+    scope.send("function_is_absolute_path", args)
+  end
+end

lib/puppet/functions/validate_absolute_path.rb

@@ -0,0 +1,15 @@
+Puppet::Functions.create_function(:validate_absolute_path) do
+  dispatch :deprecation_gen do
+    param 'Any', :scope
+    repeated_param 'Any', :args
+  end
+  # Workaround PUP-4438 (fixed: https://github.com/puppetlabs/puppet/commit/e01c4dc924cd963ff6630008a5200fc6a2023b08#diff-c937cc584953271bb3d3b3c2cb141790R221) to support puppet < 4.1.0 and puppet < 3.8.1.
+  def call(scope, *args)
+    manipulated_args = [scope] + args
+    self.class.dispatcher.dispatch(self, scope, manipulated_args)
+  end
+  def deprecation_gen(scope, *args)
+    call_function('deprecation', 'validate_absolute_path', "This method is deprecated, please use the stdlib validate_legacy function, with Stdlib::Compat::Absolute_Path. There is further documentation for validate_legacy function in the README.")
+    scope.send("function_validate_absolute_path", args)
+  end
+end

lib/puppet/parser/functions/is_absolute_path.rb

@@ -23,7 +23,7 @@ module Puppet::Parser::Functions
         is_absolute_path($undefined)
 
   ENDHEREDOC
-
+    function_deprecation([:is_absolute_path, 'This method is deprecated, please use the stdlib validate_legacy function, with Stdlib::Compat::Absolute_path. There is further documentation for validate_legacy function in the README.'])
     require 'puppet/util'
 
     path = args[0]
@@ -47,4 +47,4 @@ module Puppet::Parser::Functions
     end
     value
   end
-end
+end

lib/puppet/parser/functions/validate_absolute_path.rb

@@ -26,6 +26,9 @@ module Puppet::Parser::Functions
 
     ENDHEREDOC
 
+    # The deprecation function was being called twice, as validate_absolute_path calls is_absolute_path. I have removed it from here so it only calls deprecation once within is_absolute_path.
+    # function_deprecation([:validate_absolute_path, 'This method is deprecated, please use the stdlib validate_legacy function, with Stdlib::Compat::Absolute_path. There is further documentation for validate_legacy function in the README.'])
+
     require 'puppet/util'
 
     unless args.length > 0 then