Move start of profiling to a Document#render_to_output_buffer patch

lib/liquid/document.rb

@@ -42,7 +42,7 @@ module Liquid
     end
 
     def render(context)
-      @body.render(context)
+      render_to_output_buffer(context, +'')
     end
 
     private

lib/liquid/profiler/hooks.rb

@@ -14,6 +14,14 @@ module Liquid
   end
   BlockBody.prepend(BlockBodyProfilingHook)
 
+  module DocumentProfilingHook
+    def render_to_output_buffer(context, output)
+      return super unless context.profiler
+      context.profiler.profile { super }
+    end
+  end
+  Document.prepend(DocumentProfilingHook)
+
   module ContextProfilingHook
     attr_accessor :profiler
 

lib/liquid/template.rb

@@ -199,9 +199,7 @@ module Liquid
 
       begin
         # render the nodelist.
-        with_profiling(context) do
+        @root.render_to_output_buffer(context, output || +'')
-          @root.render_to_output_buffer(context, output || +'')
-        end
       rescue Liquid::MemoryError => e
         context.handle_error(e)
       ensure
@@ -224,11 +222,6 @@ module Liquid
       Tokenizer.new(source, @line_numbers)
     end
 
-    def with_profiling(context)
-      return yield unless context.profiler
-      context.profiler.profile { yield }
-    end
-
     def apply_options_to_context(context, options)
       context.add_filters(options[:filters]) if options[:filters]
       context.global_filter      = options[:global_filter] if options[:global_filter]