Take string slices

Author: sanxiyn

src/librustc/driver/session.rs

@@ -175,16 +175,16 @@ pub struct Session_ {
 pub type Session = @Session_;
 
 pub impl Session_ {
-    fn span_fatal(@self, sp: span, msg: ~str) -> ! {
+    fn span_fatal(@self, sp: span, msg: &str) -> ! {
         self.span_diagnostic.span_fatal(sp, msg)
     }
-    fn fatal(@self, msg: ~str) -> ! {
+    fn fatal(@self, msg: &str) -> ! {
         self.span_diagnostic.handler().fatal(msg)
     }
-    fn span_err(@self, sp: span, msg: ~str) {
+    fn span_err(@self, sp: span, msg: &str) {
         self.span_diagnostic.span_err(sp, msg)
     }
-    fn err(@self, msg: ~str) {
+    fn err(@self, msg: &str) {
         self.span_diagnostic.handler().err(msg)
     }
     fn has_errors(@self) -> bool {
@@ -193,31 +193,31 @@ pub impl Session_ {
     fn abort_if_errors(@self) {
         self.span_diagnostic.handler().abort_if_errors()
     }
-    fn span_warn(@self, sp: span, msg: ~str) {
+    fn span_warn(@self, sp: span, msg: &str) {
         self.span_diagnostic.span_warn(sp, msg)
     }
-    fn warn(@self, msg: ~str) {
+    fn warn(@self, msg: &str) {
         self.span_diagnostic.handler().warn(msg)
     }
-    fn span_note(@self, sp: span, msg: ~str) {
+    fn span_note(@self, sp: span, msg: &str) {
         self.span_diagnostic.span_note(sp, msg)
     }
-    fn note(@self, msg: ~str) {
+    fn note(@self, msg: &str) {
         self.span_diagnostic.handler().note(msg)
     }
-    fn span_bug(@self, sp: span, msg: ~str) -> ! {
+    fn span_bug(@self, sp: span, msg: &str) -> ! {
         self.span_diagnostic.span_bug(sp, msg)
     }
-    fn bug(@self, msg: ~str) -> ! {
+    fn bug(@self, msg: &str) -> ! {
         self.span_diagnostic.handler().bug(msg)
     }
-    fn span_unimpl(@self, sp: span, msg: ~str) -> ! {
+    fn span_unimpl(@self, sp: span, msg: &str) -> ! {
         self.span_diagnostic.span_unimpl(sp, msg)
     }
-    fn unimpl(@self, msg: ~str) -> ! {
+    fn unimpl(@self, msg: &str) -> ! {
         self.span_diagnostic.handler().unimpl(msg)
     }
-    fn span_lint_level(@self, level: lint::level, sp: span, msg: ~str) {
+    fn span_lint_level(@self, level: lint::level, sp: span, msg: &str) {
         match level {
           lint::allow => { },
           lint::warn => self.span_warn(sp, msg),
@@ -230,7 +230,7 @@ pub impl Session_ {
                  expr_id: ast::node_id,
                  item_id: ast::node_id,
                  span: span,
-                 msg: ~str) {
+                 msg: &str) {
         let level = lint::get_lint_settings_level(
             self.lint_settings, lint_mode, expr_id, item_id);
         self.span_lint_level(level, span, msg);