add examples board, JSON ready

1 files changed, 21 insertions, 3 deletions

diff --git a/examples/board.rb b/examples/board.rb
index b76679f..7ba7310 100644
--- a/examples/board.rb
+++ b/examples/board.rb
@@ -6,16 +6,29 @@
 # run this script which builds the example system and spin it untill it's empty:
 #   $ ruby -Ilib examples/links.rb
 #
+# or load the system from a JSON specification ( created with dom0.hibernate! )
+#   $ ruby -Ilib bin/edoors.rb -r examples/board.rb examples/board.json
+#
+#
 require 'edoors'
 #
 class FileReader < Edoors::Door
     #
-    def initialize n, p, path
+    def initialize n, p, path=nil
         super n, p
-        @file = File.open(path,'r')
+        @filepath = path unless path.nil?
+    end
+    #
+    def hibernate!
+        {'filepath'=>@filepath}
+    end
+    #
+    def resume! o
+        @filepath = o['filepath']
     end
     #
     def start!
+        @file = File.open(@filepath,'r')
         # stimulate myself on system boot up
         send_p require_p(Edoors::Particle), Edoors::ACT_GET
     end
@@ -32,7 +45,7 @@ class FileReader < Edoors::Door
                 # see Room#_send and Room#_try_links
                 send_p p
                 # stimulate myself
-                start!
+                send_p require_p(Edoors::Particle), Edoors::ACT_GET
             end
         end
     end
@@ -110,6 +123,11 @@ if $0 == __FILE__
     # schedule the spinning particles untill the system cools down
     dom0.spin!
     #
+    # you can save the system state after it's run,
+    # but to be able to use it to bootstrap, the hibernation attribute must be set to false
+    # otherwise start! method is not called
+    # dom0.hibernate! 'board.json'
+    #
 end
 #
 # EOF