From 0d6e8edc2a47a4b4c6824936632bfb83850db343 Mon Sep 17 00:00:00 2001
From: Piotr Sarnacki <drogus@gmail.com>
Date: Sat, 4 May 2013 15:09:22 +0200
Subject: Move actionpack/lib/action_view* into actionview/lib

---
 .../renderer/streaming_template_renderer.rb        | 103 ---------------------
 1 file changed, 103 deletions(-)
 delete mode 100644 actionpack/lib/action_view/renderer/streaming_template_renderer.rb

(limited to 'actionpack/lib/action_view/renderer/streaming_template_renderer.rb')

diff --git a/actionpack/lib/action_view/renderer/streaming_template_renderer.rb b/actionpack/lib/action_view/renderer/streaming_template_renderer.rb
deleted file mode 100644
index 9cf6eb0c65..0000000000
--- a/actionpack/lib/action_view/renderer/streaming_template_renderer.rb
+++ /dev/null
@@ -1,103 +0,0 @@
-require 'fiber'
-
-module ActionView
-  # == TODO
-  #
-  # * Support streaming from child templates, partials and so on.
-  # * Integrate exceptions with exceptron
-  # * Rack::Cache needs to support streaming bodies
-  class StreamingTemplateRenderer < TemplateRenderer #:nodoc:
-    # A valid Rack::Body (i.e. it responds to each).
-    # It is initialized with a block that, when called, starts
-    # rendering the template.
-    class Body #:nodoc:
-      def initialize(&start)
-        @start = start
-      end
-
-      def each(&block)
-        begin
-          @start.call(block)
-        rescue Exception => exception
-          log_error(exception)
-          block.call ActionView::Base.streaming_completion_on_exception
-        end
-        self
-      end
-
-      private
-
-      # This is the same logging logic as in ShowExceptions middleware.
-      # TODO Once "exceptron" is in, refactor this piece to simply re-use exceptron.
-      def log_error(exception) #:nodoc:
-        logger = ActionView::Base.logger
-        return unless logger
-
-        message = "\n#{exception.class} (#{exception.message}):\n"
-        message << exception.annoted_source_code.to_s if exception.respond_to?(:annoted_source_code)
-        message << "  " << exception.backtrace.join("\n  ")
-        logger.fatal("#{message}\n\n")
-      end
-    end
-
-    # For streaming, instead of rendering a given a template, we return a Body
-    # object that responds to each. This object is initialized with a block
-    # that knows how to render the template.
-    def render_template(template, layout_name = nil, locals = {}) #:nodoc:
-      return [super] unless layout_name && template.supports_streaming?
-
-      locals ||= {}
-      layout   = layout_name && find_layout(layout_name, locals.keys)
-
-      Body.new do |buffer|
-        delayed_render(buffer, template, layout, @view, locals)
-      end
-    end
-
-    private
-
-    def delayed_render(buffer, template, layout, view, locals)
-      # Wrap the given buffer in the StreamingBuffer and pass it to the
-      # underlying template handler. Now, everytime something is concatenated
-      # to the buffer, it is not appended to an array, but streamed straight
-      # to the client.
-      output  = ActionView::StreamingBuffer.new(buffer)
-      yielder = lambda { |*name| view._layout_for(*name) }
-
-      instrument(:template, :identifier => template.identifier, :layout => layout.try(:virtual_path)) do
-        fiber = Fiber.new do
-          if layout
-            layout.render(view, locals, output, &yielder)
-          else
-            # If you don't have a layout, just render the thing
-            # and concatenate the final result. This is the same
-            # as a layout with just <%= yield %>
-            output.safe_concat view._layout_for
-          end
-        end
-
-        # Set the view flow to support streaming. It will be aware
-        # when to stop rendering the layout because it needs to search
-        # something in the template and vice-versa.
-        view.view_flow = StreamingFlow.new(view, fiber)
-
-        # Yo! Start the fiber!
-        fiber.resume
-
-        # If the fiber is still alive, it means we need something
-        # from the template, so start rendering it. If not, it means
-        # the layout exited without requiring anything from the template.
-        if fiber.alive?
-          content = template.render(view, locals, &yielder)
-
-          # Once rendering the template is done, sets its content in the :layout key.
-          view.view_flow.set(:layout, content)
-
-          # In case the layout continues yielding, we need to resume
-          # the fiber until all yields are handled.
-          fiber.resume while fiber.alive?
-        end
-      end
-    end
-  end
-end
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