move resource dsl creation to resource plugin

lib/inspec/profile_context.rb

@@ -25,9 +25,8 @@ module Inspec
     end
 
     def reload_dsl
-      dsl = create_inner_dsl(@backend)
-      outer_dsl = create_outer_dsl(dsl)
-      ctx = create_context(outer_dsl)
+      dsl = create_dsl
+      ctx = create_context(dsl)
       @profile_context = ctx.new
     end
 
@@ -66,36 +65,22 @@ module Inspec
 
     private
 
-    # Creates the inner DSL which includes all resources for
-    # creating tests. It is always connected to one target,
-    # which is specified via the backend argument.
-    #
-    # @param backend [BackendRunner] exposing the target to resources
-    # @return [InnerDSLModule]
-    def create_inner_dsl(backend)
-      Module.new do
-        Inspec::Resource.registry.each do |id, r|
-          define_method id.to_sym do |*args|
-            r.new(backend, id.to_s, *args)
-          end
-        end
-      end
-    end
-
     # Creates the outer DSL which includes all methods for creating
     # tests and control structures.
     #
-    # @param dsl [InnerDSLModule] which contains all resources
+    # @param backend [BackendRunner] exposing the target to resources
     # @return [OuterDSLClass]
-    def create_outer_dsl(dsl)
+    def create_dsl
+      resources_dsl = Inspec::Resource.create_dsl(@backend)
+
       rule_class = Class.new(Inspec::Rule) do
         include RSpec::Core::DSL
-        include dsl
+        include resources_dsl
       end
 
       # rubocop:disable Lint/NestedMethodDefinition
       Class.new do
-        include dsl
+        include resources_dsl
 
         define_method :control do |*args, &block|
           id = args[0]

lib/inspec/resource.rb

@@ -11,8 +11,31 @@ module Inspec
     def self.registry
       @registry ||= {}
     end
+
+    # Creates the inner DSL which includes all resources for
+    # creating tests. It is always connected to one target,
+    # which is specified via the backend argument.
+    #
+    # @param backend [BackendRunner] exposing the target to resources
+    # @return [ResourceDSLModule]
+    def self.create_dsl(backend)
+      # need the local name, to use it in the module creation further down
+      my_registry = registry
+      Module.new do
+        my_registry.each do |id, r|
+          define_method id.to_sym do |*args|
+            r.new(backend, id.to_s, *args)
+          end
+        end
+      end
+    end
   end
 
+  # Retrieve the base class for creating a new resource.
+  # Create classes that inherit from this class.
+  #
+  # @param [int] version the resource version to use
+  # @return [Resource] base class for creating a new resource
   def self.resource(version)
     if version != 1
       fail 'Only resource version 1 is supported!'