Rollup merge of #22157 - tbu-:pr_debug_collections, r=alexcrichton

r? @Gankro

src/libcollections/bit.rs

@@ -978,7 +978,7 @@ fn cmp(&self, other: &BitVec) -> Ordering {
 impl fmt::Debug for BitVec {
     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
         for bit in self {
-            try!(write!(fmt, "{}", if bit { 1u32 } else { 0u32 }));
+            try!(write!(fmt, "{}", if bit { 1 } else { 0 }));
         }
         Ok(())
     }
@@ -1752,7 +1752,7 @@ pub fn remove(&mut self, value: &usize) -> bool {
 #[stable(feature = "rust1", since = "1.0.0")]
 impl fmt::Debug for BitSet {
     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
-        try!(write!(fmt, "BitSet {{"));
+        try!(write!(fmt, "{{"));
         let mut first = true;
         for n in self {
             if !first {
@@ -2655,7 +2655,7 @@ fn test_bit_set_show() {
         s.insert(10);
         s.insert(50);
         s.insert(2);
-        assert_eq!("BitSet {1, 2, 10, 50}", format!("{:?}", s));
+        assert_eq!("{1, 2, 10, 50}", format!("{:?}", s));
     }
 
     #[test]

src/libcollections/btree/map.rs

@@ -899,7 +899,7 @@ fn cmp(&self, other: &BTreeMap<K, V>) -> Ordering {
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<K: Debug, V: Debug> Debug for BTreeMap<K, V> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        try!(write!(f, "BTreeMap {{"));
+        try!(write!(f, "{{"));
 
         for (i, (k, v)) in self.iter().enumerate() {
             if i != 0 { try!(write!(f, ", ")); }

src/libcollections/btree/set.rs

@@ -613,7 +613,7 @@ fn bitor(self, rhs: &BTreeSet<T>) -> BTreeSet<T> {
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<T: Debug> Debug for BTreeSet<T> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        try!(write!(f, "BTreeSet {{"));
+        try!(write!(f, "{{"));
 
         for (i, x) in self.iter().enumerate() {
             if i != 0 { try!(write!(f, ", ")); }
@@ -911,7 +911,7 @@ fn test_show() {
 
         let set_str = format!("{:?}", set);
 
-        assert_eq!(set_str, "BTreeSet {1, 2}");
-        assert_eq!(format!("{:?}", empty), "BTreeSet {}");
+        assert_eq!(set_str, "{1, 2}");
+        assert_eq!(format!("{:?}", empty), "{}");
     }
 }

src/libcollections/enum_set.rs

@@ -36,7 +36,7 @@ impl<E> Copy for EnumSet<E> {}
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<E:CLike + fmt::Debug> fmt::Debug for EnumSet<E> {
     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
-        try!(write!(fmt, "EnumSet {{"));
+        try!(write!(fmt, "{{"));
         let mut first = true;
         for e in self {
             if !first {
@@ -314,11 +314,11 @@ fn test_new() {
     #[test]
     fn test_show() {
         let mut e = EnumSet::new();
-        assert!(format!("{:?}", e) == "EnumSet {}");
+        assert!(format!("{:?}", e) == "{}");
         e.insert(A);
-        assert!(format!("{:?}", e) == "EnumSet {A}");
+        assert!(format!("{:?}", e) == "{A}");
         e.insert(C);
-        assert!(format!("{:?}", e) == "EnumSet {A, C}");
+        assert!(format!("{:?}", e) == "{A, C}");
     }
 
     #[test]

src/libcollections/linked_list.rs

@@ -918,7 +918,7 @@ fn clone(&self) -> LinkedList<A> {
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<A: fmt::Debug> fmt::Debug for LinkedList<A> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        try!(write!(f, "LinkedList ["));
+        try!(write!(f, "["));
 
         for (i, e) in self.iter().enumerate() {
             if i != 0 { try!(write!(f, ", ")); }
@@ -1387,10 +1387,10 @@ fn test_fuzz() {
     #[test]
     fn test_show() {
         let list: LinkedList<_> = (0..10).collect();
-        assert_eq!(format!("{:?}", list), "LinkedList [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]");
+        assert_eq!(format!("{:?}", list), "[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]");
 
         let list: LinkedList<_> = vec!["just", "one", "test", "more"].iter().cloned().collect();
-        assert_eq!(format!("{:?}", list), "LinkedList [\"just\", \"one\", \"test\", \"more\"]");
+        assert_eq!(format!("{:?}", list), "[\"just\", \"one\", \"test\", \"more\"]");
     }
 
     #[cfg(test)]

src/libcollections/vec_deque.rs

@@ -1754,7 +1754,7 @@ fn extend<T: IntoIterator<Item=A>>(&mut self, iter: T) {
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<T: fmt::Debug> fmt::Debug for VecDeque<T> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        try!(write!(f, "VecDeque ["));
+        try!(write!(f, "["));
 
         for (i, e) in self.iter().enumerate() {
             if i != 0 { try!(write!(f, ", ")); }
@@ -2435,12 +2435,12 @@ fn test_ord() {
     #[test]
     fn test_show() {
         let ringbuf: VecDeque<_> = (0..10).collect();
-        assert_eq!(format!("{:?}", ringbuf), "VecDeque [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]");
+        assert_eq!(format!("{:?}", ringbuf), "[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]");
 
         let ringbuf: VecDeque<_> = vec!["just", "one", "test", "more"].iter()
                                                                         .cloned()
                                                                         .collect();
-        assert_eq!(format!("{:?}", ringbuf), "VecDeque [\"just\", \"one\", \"test\", \"more\"]");
+        assert_eq!(format!("{:?}", ringbuf), "[\"just\", \"one\", \"test\", \"more\"]");
     }
 
     #[test]

src/libcollections/vec_map.rs

@@ -739,7 +739,7 @@ fn cmp(&self, other: &VecMap<V>) -> Ordering {
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<V: fmt::Debug> fmt::Debug for VecMap<V> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        try!(write!(f, "VecMap {{"));
+        try!(write!(f, "{{"));
 
         for (i, (k, v)) in self.iter().enumerate() {
             if i != 0 { try!(write!(f, ", ")); }
@@ -1318,8 +1318,8 @@ fn test_show() {
         map.insert(3, 4);
 
         let map_str = format!("{:?}", map);
-        assert!(map_str == "VecMap {1: 2, 3: 4}" || map_str == "{3: 4, 1: 2}");
-        assert_eq!(format!("{:?}", empty), "VecMap {}");
+        assert!(map_str == "{1: 2, 3: 4}" || map_str == "{3: 4, 1: 2}");
+        assert_eq!(format!("{:?}", empty), "{}");
     }
 
     #[test]

src/libstd/collections/hash/map.rs

@@ -1212,7 +1212,7 @@ impl<K, V, S> Debug for HashMap<K, V, S>
     where K: Eq + Hash + Debug, V: Debug, S: HashState
 {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        try!(write!(f, "HashMap {{"));
+        try!(write!(f, "{{"));
 
         for (i, (k, v)) in self.iter().enumerate() {
             if i != 0 { try!(write!(f, ", ")); }
@@ -1999,9 +1999,9 @@ fn test_show() {
 
         let map_str = format!("{:?}", map);
 
-        assert!(map_str == "HashMap {1: 2, 3: 4}" ||
-                map_str == "HashMap {3: 4, 1: 2}");
-        assert_eq!(format!("{:?}", empty), "HashMap {}");
+        assert!(map_str == "{1: 2, 3: 4}" ||
+                map_str == "{3: 4, 1: 2}");
+        assert_eq!(format!("{:?}", empty), "{}");
     }
 
     #[test]

src/libstd/collections/hash/set.rs

@@ -598,7 +598,7 @@ impl<T, S> fmt::Debug for HashSet<T, S>
           S: HashState
 {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        try!(write!(f, "HashSet {{"));
+        try!(write!(f, "{{"));
 
         for (i, x) in self.iter().enumerate() {
             if i != 0 { try!(write!(f, ", ")); }
@@ -1186,8 +1186,8 @@ fn test_show() {
 
         let set_str = format!("{:?}", set);
 
-        assert!(set_str == "HashSet {1, 2}" || set_str == "HashSet {2, 1}");
-        assert_eq!(format!("{:?}", empty), "HashSet {}");
+        assert!(set_str == "{1, 2}" || set_str == "{2, 1}");
+        assert_eq!(format!("{:?}", empty), "{}");
     }
 
     #[test]

src/test/run-pass/issue-3559.rs

@@ -24,6 +24,6 @@ pub fn main() {
     let mut table = HashMap::new();
     table.insert("one".to_string(), 1);
     table.insert("two".to_string(), 2);
-    assert!(check_strs(&format!("{:?}", table), "HashMap {\"one\": 1, \"two\": 2}") ||
-            check_strs(&format!("{:?}", table), "HashMap {\"two\": 2, \"one\": 1}"));
+    assert!(check_strs(&format!("{:?}", table), "{\"one\": 1, \"two\": 2}") ||
+            check_strs(&format!("{:?}", table), "{\"two\": 2, \"one\": 1}"));
 }