Implement recipe evaluation feature

lib/producer/core.rb

@@ -2,6 +2,7 @@ require 'producer/core/version'
 
 module Producer
   module Core
-    autoload :CLI, 'producer/core/cli'
+    autoload :CLI,    'producer/core/cli'
+    autoload :Recipe, 'producer/core/recipe'
   end
 end

lib/producer/core/cli.rb

@@ -12,6 +12,8 @@ module Producer
 
       def run!
         print_usage_and_exit(64) unless @arguments.length == 2
+
+        Recipe.from_file(@arguments[1]).evaluate
       end
 
 

lib/producer/core/recipe.rb

@@ -0,0 +1,19 @@
+module Producer
+  module Core
+    class Recipe
+      attr_reader :code
+
+      def self.from_file(filepath)
+        new(File.read(filepath))
+      end
+
+      def initialize(code)
+        @code = code
+      end
+
+      def evaluate
+        Object.new.instance_eval @code
+      end
+    end
+  end
+end