Turn old drop blocks into Drop traits

src/test/auxiliary/moves_based_on_type_lib.rs

@@ -12,7 +12,10 @@
 
 pub struct S {
     x: int,
-    drop {
+}
+
+impl Drop for S {
+    fn finalize(&self) {
         io::println("goodbye");
     }
 }

src/test/compile-fail/use-after-move-self-based-on-type.rs

@@ -1,6 +1,9 @@
 struct S {
     x: int,
-    drop {}
+}
+
+impl Drop for S {
+    fn finalize(&self) {}
 }
 
 impl S {

src/test/run-fail/too-much-recursion-unwinding.rs

@@ -21,7 +21,10 @@ fn recurse() {
 
 struct r {
     recursed: *mut bool,
-    drop {
+}
+
+impl Drop for r {
+    fn finalize(&self) {
         unsafe {
             if !*(self.recursed) {
                 *(self.recursed) = true;

src/test/run-fail/unwind-resource-fail.rs

@@ -12,7 +12,10 @@
 
 struct r {
     i: int,
-    drop { fail!(~"squirrel") }
+}
+
+impl Drop for r {
+    fn finalize(&self) { fail!(~"squirrel") }
 }
 
 fn r(i: int) -> r { r { i: i } }

src/test/run-fail/unwind-resource-fail2.rs

@@ -13,7 +13,10 @@
 
 struct r {
     i: int,
-    drop { fail!(~"wombat") }
+}
+
+impl Drop for r {
+    fn finalize(&self) { fail!(~"wombat") }
 }
 
 fn r(i: int) -> r { r { i: i } }

src/test/run-pass/issue-3563-3.rs

@@ -54,7 +54,10 @@ struct AsciiArt
 
     // This struct can be quite large so we'll disable copying: developers need
     // to either pass these structs around via borrowed pointers or move them.
-    drop {}
+}
+
+impl Drop for AsciiArt {
+    fn finalize(&self) {}
 }
 
 // It's common to define a constructor sort of function to create struct instances.