test return. remove some dead code

lib/virtual/compiler/function_expression.rb

@@ -31,51 +31,5 @@ module Virtual
       new_method.source.return_type = return_type
       Return.new(return_type)
     end
-    def scratch
-      args = []
-      locals = {}
-      expression.params.each_with_index do |param , index|
-        arg = param.name
-        register = Register::RegisterReference.new(RegisterMachine.instance.receiver_register).next_reg_use(index + 1)
-        arg_value = Integer.new(register)
-        locals[arg] = arg_value
-        args << arg_value
-      end
-      # class depends on receiver
-      me = Integer.new( RegisterMachine.instance.receiver_register )
-      if expression.receiver.nil?
-        clazz = context.current_class
-      else
-        c = context.object_space.get_class_by_name expression.receiver.name.to_sym
-        clazz = c.meta_class
-      end
-
-      function = Function.new(name , me , args )
-      clazz.add_code_function function
-
-      parent_locals = context.locals
-      parent_function = context.function
-      context.locals = locals
-      context.function = function
-
-      last_compiled = nil
-      expression.body.each do |b|
-        puts "compiling in function #{b}"
-        last_compiled = b.compile(context)
-        raise "alarm #{last_compiled} \n #{b}" unless last_compiled.is_a? Word
-      end
-
-      return_reg = Integer.new(RegisterMachine.instance.return_register)
-      if last_compiled.is_a?(IntegerConstant) or last_compiled.is_a?(ObjectConstant)
-        return_reg.load function , last_compiled if last_compiled.register_symbol != return_reg.register_symbol
-      else
-        return_reg.move( function, last_compiled ) if last_compiled.register_symbol != return_reg.register_symbol
-      end
-      function.set_return return_reg
-
-      context.locals = parent_locals
-      context.function = parent_function
-      function
-    end
   end
 end

lib/virtual/compiler/return_expression.rb

@@ -2,25 +2,8 @@ module Virtual
   module Compiler
 
 #    return attr_reader  :expression
-    def self.compile_return expression, scope ,method
+    def self.compile_return expression, method
-      Reference.new
+      return Compiler.compile(expression.expression , method)
-    end
-    def old
-      into = context.function
-      puts "compiling return expression #{expression}, now return in return_regsiter"
-      expression_value = expression.compile(context)
-      # copied from function expression: TODO make function
-
-      return_reg = Integer.new(RegisterMachine.instance.return_register)
-      if expression_value.is_a?(IntegerConstant) or expression_value.is_a?(ObjectConstant)
-        return_reg.load into , expression_value
-      else
-        if expression_value.register_symbol != return_reg.register_symbol
-          return_reg.move( into, expression_value )
-        end
-      end
-      #function.set_return return_reg
-      return return_reg
     end
   end
 end

test/fragments/test_if.rb

@@ -15,6 +15,15 @@ HERE
   check
   end
 
+  def test_return
+    @string_input = <<HERE
+return 5
+HERE
+  @expect =  [Virtual::Return ]
+  check
+  end
+
+
   def ttest_if_function
     @string_input = <<HERE
 def itest(n)