copies of the old code to start the new layer

lib/ast/while_expression.rb

@@ -0,0 +1,31 @@
+module Ast
+  class WhileExpression < Expression
+#    attr_reader  :condition, :body
+    def compile context
+      into = context.function
+      ret = into.new_block "while_end"
+      while_block = into.new_block "while_start"
+      into.insert_at while_block
+      
+      puts "compiling while condition #{condition}"
+      cond_val = condition.compile(context)
+      into.b ret , condition_code: cond_val.not_operator
+      into.insertion_point.branch = ret
+
+      last = nil
+
+      body.each do |part|
+        puts "compiling in while #{part}"
+        last = part.compile(context)
+      end
+      into.b while_block
+      into.insertion_point.branch = while_block
+      
+      puts "compile while end"
+      into.insert_at ret
+      return last
+    end
+  end
+
+  
+end