ion out last changes from grammar update

surprisingly painless, considering it was more or less a rewrite

test/compiler/test_methods.rb

@@ -49,9 +49,9 @@ HERE
     def test_int_function
       @string_input    = <<HERE
 class Integer < Object
-int times(int x)
-  self * x
-end
+  int times(int x)
+    return x
+  end
 end
 HERE
       @output = [[Virtual::MethodEnter] , [Virtual::MethodReturn]]

test/fragments/test_class.rb

@@ -5,11 +5,9 @@ class TestBasicClass < MiniTest::Test
 
   def test_class_basic
     @string_input = <<HERE
-module Foo
-  class Bar
-    int buh()
-      return 1
-    end
+class Bar
+  int buh()
+    return 1
   end
 end
 HERE

test/fragments/test_if.rb

@@ -9,9 +9,9 @@ class Object
   int main()
     int n = 10
     if( n < 12)
-      3
+      return 3
     else
-      4
+      return 4
     end
   end
 end

test/interpreter/test_puti.rb

@@ -30,7 +30,8 @@ class Integer < Object
     int rest
     rest = self - div
     if( rest < 0)
-      str = str + digit( rest )
+      rest = self.digit( rest )
+      str = str + rest
     else
       str = div.add_string(str)
     end