Create a new ActivePageTable struct that derefs to Mapper

src/memory/paging/mod.rs

@@ -1,4 +1,6 @@
 pub use self::entry::*;
+pub use self::mapper::Mapper;
+use core::ops::{Deref, DerefMut};
 use core::ptr::Unique;
 use memory::{PAGE_SIZE, Frame, FrameAllocator};
 use self::table::{Table, Level4};
@@ -45,6 +47,32 @@ impl Page {
     }
 }
 
+pub struct ActivePageTable {
+    mapper: Mapper,
+}
+
+impl Deref for ActivePageTable {
+    type Target = Mapper;
+
+    fn deref(&self) -> &Mapper {
+        &self.mapper
+    }
+}
+
+impl DerefMut for ActivePageTable {
+    fn deref_mut(&mut self) -> &mut Mapper {
+        &mut self.mapper
+    }
+}
+
+impl ActivePageTable {
+    unsafe fn new() -> ActivePageTable {
+        ActivePageTable {
+            mapper: Mapper::new(),
+        }
+    }
+}
+
 pub struct InactivePageTable {
     p4_frame: Frame,
 }