librustc: Implement explicit @self and ~self for objects. r=nmatsakis

src/test/run-pass/explicit-self-objects-box.rs

@@ -0,0 +1,24 @@
+trait Foo {
+    fn f(@self);
+}
+
+struct S {
+    x: int
+}
+
+impl S : Foo {
+    fn f(@self) {
+        assert self.x == 3;
+    }
+}
+
+fn main() {
+    let x = @S { x: 3 };
+    let y = x as @Foo;
+    y.f();
+    y.f();
+    y.f();
+    y.f();
+}
+
+

src/test/run-pass/explicit-self-objects-uniq.rs

@@ -0,0 +1,23 @@
+trait Foo {
+    fn f(~self);
+}
+
+struct S {
+    x: int
+}
+
+impl S : Foo {
+    fn f(~self) {
+        assert self.x == 3;
+    }
+}
+
+fn main() {
+    let x = ~S { x: 3 };
+    let y = x as ~Foo;
+    y.f();
+    y.f();
+    y.f();
+}
+
+