better documentation

README.md

@@ -9,28 +9,35 @@ After some tryouts it ended up being an Opal application. That is ruby as javasc
 - next a view of the Virtual Instructions
 - last section, current block with current Register Instruction highlighted
 - step (next) button for single stepping
-- status: starting , running , exited
-- bottom row are the registers. If the register hold an object the variables are shown.
-    (also should have hover info) , the first letter indicates the class, the number is the address
+- state: starting , running , exited
+- bottom row are the registers. If the register holds an object the variables are shown.
 
-So lots to do, but a good start.
+## Register View
+
+The Register view is now greatly improved, especially in it's dynamic features:
+
+- when the contents update the register obviously updates
+- when the object that the register holds updates, the new value is shown immediately
+- hovering over a variable will **expand that variable** .
+- the hovering works recursively, so it is possible to drill pdown into objects for sevaral levels
 
 
+### Debugging the debugger
 
-I don't want to use gdb anymore, and it would be easier without using the qemu setup, so:
+Opal is pre 1.0 and is a wip. While current source map support is quite good, one only gets
+real lines when switching debug on. Debug make it load every single file seperately, slooows it
+down in other words. Set DEBUG environement to swithc it on.
 
-- single step debugging of the register machine level (as close to arm as need be)
-- visual transitions for steps
-- visualisation of data in registers (some kind of link to the object)
-- show the current instruction and a few around
-- show vm object (message etc)
-- show effect of register transitions on vm objects
-- visualize vm object content (again some links)
+I set the sprockets cache to mem-cache and that increase load time from 12s to 1 , so it's quite
+usable and restarting a debug is fine.
 
+## Todos
 
-# Space
+Currently only one source is supported. I change the code.rb file to debug a new problem.
 
-- Visualise the object space in some way
-- Visualise single object, bit like atoms
-- values immediate
-- objects as link
+Parsing (parslet) does not work in opal. So s-expressions are used. I use the parser or interpreter
+to spew those out. Having a dropdown would be nice, and not even so difficult, but it happens rarely.
+
+Breakpoints would be nice at some point. Both in step count and variable value.
+
+Seeing the source code should be possible, just have to keep it around.

lib/base/constant_view.rb

@@ -1,12 +1,17 @@
 require_relative "element_view"
 
+# A very simple ElementView with constant text and class. It uses the ElementView.div function
+# to generate the html, see there for details
+#
 class ConstantView < ElementView
 
+  # store the class and text
   def initialize class_or_id , text = nil
     @class_or_id = class_or_id
     @text = text
   end
 
+  # use ElementView.div to create html from the class and text 
   def draw
     @element = div(@class_or_id , @text)
   end

lib/base/element_view.rb

@@ -1,3 +1,12 @@
+# The basic idea is somewhat that of a shadow dom.
+#
+# ElementView wraps a single div with whatever content you want (derive to implement the view)
+#
+# It must have an element, which is drawn. Draw returns the div or whatever. An ElementView
+#  does not draw itself, but rather is drawn.
+#
+# Listviews provide structure
+#
 class ElementView
 
   def initialize

lib/base/list_view.rb

@@ -1,5 +1,14 @@
 require_relative "element_view"
 
+# Listviews hold an array of elements and are responsible for drawing (and re-drawing them)
+#
+# A ListView hold the elements, but also the drawn html divs. You can change the element
+# structure by adding/removing/replacing and the ListView will take care of redrawing the html
+#
+# A ListView is itself an ElementView so one can build recursive structures.
+#
+# Also one can easily change the root html element, or by deriving wrap or edit the resulting html
+#
 class ListView < ElementView
 
   def initialize children

lib/code.rb

@@ -1,8 +1,59 @@
 include AST::Sexp
-CODE = s(:expressions,
+CODE =
+s(:expressions,
   s(:class, :Integer,
     s(:derives, :Object),
     s(:expressions,
+      s(:function, :ref,
+        s(:name, :digit),
+        s(:parameters,
+          s(:parameter, :int, :rest)),
+        s(:expressions,
+          s(:if,
+            s(:condition,
+              s(:operator, "==",
+                s(:name, :rest),
+                s(:int, 5))),
+            s(:if_true,
+              s(:return,
+                s(:string, "5"))),
+            s(:if_false, nil)),
+          s(:if,
+            s(:condition,
+              s(:operator, "==",
+                s(:name, :rest),
+                s(:int, 1))),
+            s(:if_true,
+              s(:return,
+                s(:string, "1"))),
+            s(:if_false, nil)),
+          s(:if,
+            s(:condition,
+              s(:operator, "==",
+                s(:name, :rest),
+                s(:int, 2))),
+            s(:if_true,
+              s(:return,
+                s(:string, "2"))),
+            s(:if_false, nil)),
+          s(:if,
+            s(:condition,
+              s(:operator, "==",
+                s(:name, :rest),
+                s(:int, 3))),
+            s(:if_true,
+              s(:return,
+                s(:string, "3"))),
+            s(:if_false, nil)),
+          s(:if,
+            s(:condition,
+              s(:operator, "==",
+                s(:name, :rest),
+                s(:int, 4))),
+            s(:if_true,
+              s(:return,
+                s(:string, "4"))),
+            s(:if_false, nil)))),
       s(:function, :ref,
         s(:name, :add_string),
         s(:parameters,
@@ -55,4 +106,16 @@ CODE = s(:expressions,
             s(:call,
               s(:name, :add_string),
               s(:arguments,
-                s(:name, :start)))))))))
+                s(:name, :start)))))))),
+  s(:class, :Object,
+    s(:derives, nil),
+    s(:expressions,
+      s(:function, :int,
+        s(:name, :main),
+        s(:parameters),
+        s(:expressions,
+          s(:call,
+            s(:name, :to_string),
+            s(:arguments),
+            s(:receiver,
+              s(:int, 5))))))))

lib/debugger.rb

@@ -9,7 +9,9 @@ require "salama"
 require "salama-reader"
 require "ast"
 require "interpreter/interpreter"
+# the base, our own litle framework, allows for child and parent views and handles updates
 require "base/list_view"
+# each seperate view is in it's own class.
 require_relative "classes_view"
 require_relative "status_view"
 require_relative "file_view"