test: De-@mut the test suite

Author: pcwalton

src/test/auxiliary/cci_nested_lib.rs

@@ -10,18 +10,21 @@
 
 #[feature(managed_boxes)];
 
+use std::cell::RefCell;
+
 pub struct Entry<A,B> {
     key: A,
     value: B
 }
 
 pub struct alist<A,B> {
     eq_fn: extern "Rust" fn(A,A) -> bool,
-    data: @mut ~[Entry<A,B>]
+    data: @RefCell<~[Entry<A,B>]>,
 }
 
 pub fn alist_add<A:'static,B:'static>(lst: &alist<A,B>, k: A, v: B) {
-    lst.data.push(Entry{key:k, value:v});
+    let mut data = lst.data.borrow_mut();
+    data.get().push(Entry{key:k, value:v});
 }
 
 pub fn alist_get<A:Clone + 'static,
@@ -30,7 +33,8 @@ pub fn alist_get<A:Clone + 'static,
                  k: A)
                  -> B {
     let eq_fn = lst.eq_fn;
-    for entry in lst.data.iter() {
+    let data = lst.data.borrow();
+    for entry in data.get().iter() {
         if eq_fn(entry.key.clone(), k.clone()) {
             return entry.value.clone();
         }
@@ -41,12 +45,18 @@ pub fn alist_get<A:Clone + 'static,
 #[inline]
 pub fn new_int_alist<B:'static>() -> alist<int, B> {
     fn eq_int(a: int, b: int) -> bool { a == b }
-    return alist {eq_fn: eq_int, data: @mut ~[]};
+    return alist {
+        eq_fn: eq_int,
+        data: @RefCell::new(~[]),
+    };
 }
 
 #[inline]
 pub fn new_int_alist_2<B:'static>() -> alist<int, B> {
     #[inline]
     fn eq_int(a: int, b: int) -> bool { a == b }
-    return alist {eq_fn: eq_int, data: @mut ~[]};
+    return alist {
+        eq_fn: eq_int,
+        data: @RefCell::new(~[]),
+    };
 }

src/test/auxiliary/issue-2631-a.rs

@@ -14,11 +14,12 @@
 
 extern mod extra;
 
+use std::cell::RefCell;
 use std::hashmap::HashMap;
 
-pub type header_map = HashMap<~str, @mut ~[@~str]>;
+pub type header_map = HashMap<~str, @RefCell<~[@~str]>>;
 
 // the unused ty param is necessary so this gets monomorphized
 pub fn request<T>(req: &header_map) {
-  let _x = (*((**req.get(&~"METHOD")).clone())[0u]).clone();
+  let _x = (*((**req.get(&~"METHOD")).clone()).get()[0u]).clone();
 }

src/test/bench/sudoku.rs

@@ -86,7 +86,7 @@ impl Sudoku {
         return Sudoku::new(g)
     }
 
-    pub fn write(&self, writer: @mut io::Writer) {
+    pub fn write(&self, writer: &mut io::Writer) {
         for row in range(0u8, 9u8) {
             write!(writer, "{}", self.grid[row][0]);
             for col in range(1u8, 9u8) {
@@ -280,5 +280,5 @@ fn main() {
         Sudoku::read(BufferedReader::new(io::stdin()))
     };
     sudoku.solve();
-    sudoku.write(@mut io::stdout() as @mut io::Writer);
+    sudoku.write(&mut io::stdout());
 }

src/test/compile-fail/cast-immutable-mutable-trait.rs

@@ -8,19 +8,18 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[feature(managed_boxes)];
+fn takes_imm(x: &int) { }
 
-fn takes_mut(x: @mut int) { }
-fn takes_imm(x: @int) { }
+fn takes_mut(x: &mut int) { }
 
 fn apply<T>(t: T, f: |T|) {
     f(t)
 }
 
 fn main() {
-    apply(@3, takes_mut); //~ ERROR (values differ in mutability)
-    apply(@3, takes_imm);
+    apply(&3, takes_mut); //~ ERROR (values differ in mutability)
+    apply(&3, takes_imm);
 
-    apply(@mut 3, takes_mut);
-    apply(@mut 3, takes_imm); //~ ERROR (values differ in mutability)
+    apply(&mut 3, takes_mut);
+    apply(&mut 3, takes_imm); //~ ERROR (values differ in mutability)
 }

src/test/compile-fail/fn-variance-1.rs

@@ -12,6 +12,5 @@
 
 static x: ~[int] = ~[123, 456]; //~ ERROR: cannot allocate vectors in constant expressions
 static y: @[int] = @[123, 456]; //~ ERROR: cannot allocate vectors in constant expressions
-static z: @mut [int] = @mut [123, 456]; //~ ERROR: cannot allocate vectors in constant expressions
 
 fn main() {}

src/test/compile-fail/issue-10487.rs

@@ -12,28 +12,28 @@
 
 // A test case for #2548.
 
-struct foo {
-    x: @mut int,
-
+use std::cell::Cell;
 
+struct foo {
+    x: @Cell<int>,
 }
 
 #[unsafe_destructor]
 impl Drop for foo {
     fn drop(&mut self) {
         unsafe {
             println("Goodbye, World!");
-            *self.x += 1;
+            self.x.set(self.x.get() + 1);
         }
     }
 }
 
-fn foo(x: @mut int) -> foo {
+fn foo(x: @Cell<int>) -> foo {
     foo { x: x }
 }
 
 fn main() {
-    let x = @mut 0;
+    let x = @Cell::new(0);
 
     {
         let mut res = foo(x);
@@ -43,5 +43,5 @@ fn main() {
         assert_eq!(v.len(), 2);
     }
 
-    assert_eq!(*x, 1);
+    assert_eq!(x.get(), 1);
 }

src/test/compile-fail/issue-2548.rs

@@ -10,7 +10,7 @@
 
 #[feature(managed_boxes)];
 
-struct P { child: Option<@mut P> }
+struct P { child: Option<@P> }
 trait PTrait {
    fn getChildOption(&self) -> Option<@P>;
 }

src/test/compile-fail/issue-3668.rs

@@ -1,12 +1,11 @@
 #[feature(managed_boxes)];
 
 struct Foo {
-    f: @mut int,
+    f: @int,
 }
 
 impl Drop for Foo { //~ ERROR cannot implement a destructor on a structure that does not satisfy Send
     fn drop(&mut self) {
-        *self.f = 10;
     }
 }