File: Return inner contents as references, not cloned

src/storage/file/mod.rs

@@ -32,20 +32,20 @@ pub struct File<'a> {
 
 impl<'a> File<'a> {
 
-    pub fn header(&self) -> FileHeaderData {
-        self.header.clone()
+    pub fn header(&self) -> &FileHeaderData {
+        &self.header
     }
 
-    pub fn data(&self) -> String {
-        self.data.clone()
+    pub fn data(&self) -> &String {
+        &self.data
     }
 
-    pub fn contents(&self) -> (FileHeaderData, String) {
+    pub fn contents(&self) -> (&FileHeaderData, &String) {
         (self.header(), self.data())
     }
 
-    pub fn id(&self) -> FileID {
-        self.id.clone()
+    pub fn id(&self) -> &FileID {
+        &self.id
     }
 
     pub fn owner(&self) -> &'a Module<'a> {

src/ui/file.rs

@@ -105,7 +105,7 @@ impl FilePrinter for TablePrinter {
             let cell_i  = Cell::new(&format!("{}", i)[..]);
             let cell_o  = Cell::new(&format!("{}", file.owner().name())[..]);
 
-            let id : String = file.id().into();
+            let id : String = file.id().clone().into();
             let cell_id = Cell::new(&id[..]);
             let row = Row::new(vec![cell_i, cell_o, cell_id]);
             tab.add_row(row);