auto merge of #8802 : pcwalton/rust/compile-speed, r=brson

r? @brson

doc/rust.md

@@ -2230,7 +2230,7 @@ Some examples of call expressions:
 # fn add(x: int, y: int) -> int { 0 }
 
 let x: int = add(1, 2);
-let pi = FromStr::from_str::<f32>("3.14");
+let pi: Option<f32> = FromStr::from_str("3.14");
 ~~~~
 
 ### Lambda expressions

src/libextra/crypto/cryptoutil.rs

@@ -420,6 +420,7 @@ mod test {
     #[test]
     #[should_fail]
     fn test_add_bytes_to_bits_tuple_overflow2() {
-        add_bytes_to_bits_tuple::<u64>((Bounded::max_value::<u64>() - 1, 0), 0x8000000000000000);
+        let value: u64 = Bounded::max_value();
+        add_bytes_to_bits_tuple::<u64>((value - 1, 0), 0x8000000000000000);
     }
 }

src/libextra/dlist.rs

@@ -661,7 +661,7 @@ mod tests {
 
     #[test]
     fn test_basic() {
-        let mut m = DList::new::<~int>();
+        let mut m: DList<~int> = DList::new();
         assert_eq!(m.pop_front(), None);
         assert_eq!(m.pop_back(), None);
         assert_eq!(m.pop_front(), None);
@@ -768,7 +768,7 @@ mod tests {
 
     #[test]
     fn test_rotate() {
-        let mut n = DList::new::<int>();
+        let mut n: DList<int> = DList::new();
         n.rotate_backward(); check_links(&n);
         assert_eq!(n.len(), 0);
         n.rotate_forward(); check_links(&n);
@@ -1033,7 +1033,7 @@ mod tests {
 
     #[cfg(test)]
     fn fuzz_test(sz: int) {
-        let mut m = DList::new::<int>();
+        let mut m: DList<int> = DList::new();
         let mut v = ~[];
         for i in range(0, sz) {
             check_links(&m);
@@ -1078,23 +1078,23 @@ mod tests {
 
     #[bench]
     fn bench_push_front(b: &mut test::BenchHarness) {
-        let mut m = DList::new::<int>();
+        let mut m: DList<int> = DList::new();
         do b.iter {
             m.push_front(0);
         }
     }
 
     #[bench]
     fn bench_push_back(b: &mut test::BenchHarness) {
-        let mut m = DList::new::<int>();
+        let mut m: DList<int> = DList::new();
         do b.iter {
             m.push_back(0);
         }
     }
 
     #[bench]
     fn bench_push_back_pop_back(b: &mut test::BenchHarness) {
-        let mut m = DList::new::<int>();
+        let mut m: DList<int> = DList::new();
         do b.iter {
             m.push_back(0);
             m.pop_back();
@@ -1103,7 +1103,7 @@ mod tests {
 
     #[bench]
     fn bench_push_front_pop_front(b: &mut test::BenchHarness) {
-        let mut m = DList::new::<int>();
+        let mut m: DList<int> = DList::new();
         do b.iter {
             m.push_front(0);
             m.pop_front();
@@ -1112,7 +1112,7 @@ mod tests {
 
     #[bench]
     fn bench_rotate_forward(b: &mut test::BenchHarness) {
-        let mut m = DList::new::<int>();
+        let mut m: DList<int> = DList::new();
         m.push_front(0);
         m.push_front(1);
         do b.iter {
@@ -1122,7 +1122,7 @@ mod tests {
 
     #[bench]
     fn bench_rotate_backward(b: &mut test::BenchHarness) {
-        let mut m = DList::new::<int>();
+        let mut m: DList<int> = DList::new();
         m.push_front(0);
         m.push_front(1);
         do b.iter {

src/libextra/flate.rs

@@ -25,13 +25,13 @@ pub mod rustrt {
 
     #[link_name = "rustrt"]
     extern {
-        pub fn tdefl_compress_mem_to_heap(psrc_buf: *const c_void,
+        pub fn tdefl_compress_mem_to_heap(psrc_buf: *c_void,
                                           src_buf_len: size_t,
                                           pout_len: *mut size_t,
                                           flags: c_int)
                                           -> *c_void;
 
-        pub fn tinfl_decompress_mem_to_heap(psrc_buf: *const c_void,
+        pub fn tinfl_decompress_mem_to_heap(psrc_buf: *c_void,
                                             src_buf_len: size_t,
                                             pout_len: *mut size_t,
                                             flags: c_int)

src/libextra/num/bigint.rs

@@ -359,7 +359,7 @@ impl Integer for BigUint {
 
         fn div_mod_floor_inner(a: BigUint, b: BigUint) -> (BigUint, BigUint) {
             let mut m = a;
-            let mut d = Zero::zero::<BigUint>();
+            let mut d: BigUint = Zero::zero();
             let mut n = 1;
             while m >= b {
                 let (d0, d_unit, b_unit) = div_estimate(&m, &b, n);
@@ -411,8 +411,9 @@ impl Integer for BigUint {
             if shift == 0 {
                 return (BigUint::new(d), One::one(), (*b).clone());
             }
+            let one: BigUint = One::one();
             return (BigUint::from_slice(d).shl_unit(shift),
-                    One::one::<BigUint>().shl_unit(shift),
+                    one.shl_unit(shift),
                     b.shl_unit(shift));
         }
     }
@@ -1168,8 +1169,8 @@ mod biguint_tests {
     #[test]
     fn test_shl() {
         fn check(s: &str, shift: uint, ans: &str) {
-            let bu = (FromStrRadix::from_str_radix::<BigUint>(s, 16).unwrap() << shift)
-                .to_str_radix(16);
+            let opt_biguint: Option<BigUint> = FromStrRadix::from_str_radix(s, 16);
+            let bu = (opt_biguint.unwrap() << shift).to_str_radix(16);
             assert_eq!(bu.as_slice(), ans);
         }
 
@@ -1206,8 +1207,9 @@ mod biguint_tests {
     #[test]
     fn test_shr() {
         fn check(s: &str, shift: uint, ans: &str) {
-            let bu = (FromStrRadix::from_str_radix::<BigUint>(s, 16).unwrap() >> shift)
-                .to_str_radix(16);
+            let opt_biguint: Option<BigUint> =
+                FromStrRadix::from_str_radix(s, 16);
+            let bu = (opt_biguint.unwrap() >> shift).to_str_radix(16);
             assert_eq!(bu.as_slice(), ans);
         }
 
@@ -1445,11 +1447,18 @@ mod biguint_tests {
 
     #[test]
     fn test_is_even() {
-        assert!(FromStr::from_str::<BigUint>("1").unwrap().is_odd());
-        assert!(FromStr::from_str::<BigUint>("2").unwrap().is_even());
-        assert!(FromStr::from_str::<BigUint>("1000").unwrap().is_even());
-        assert!(FromStr::from_str::<BigUint>("1000000000000000000000").unwrap().is_even());
-        assert!(FromStr::from_str::<BigUint>("1000000000000000000001").unwrap().is_odd());
+        let one: Option<BigUint> = FromStr::from_str("1");
+        let two: Option<BigUint> = FromStr::from_str("2");
+        let thousand: Option<BigUint> = FromStr::from_str("1000");
+        let big: Option<BigUint> =
+            FromStr::from_str("1000000000000000000000");
+        let bigger: Option<BigUint> =
+            FromStr::from_str("1000000000000000000001");
+        assert!(one.unwrap().is_odd());
+        assert!(two.unwrap().is_even());
+        assert!(thousand.unwrap().is_even());
+        assert!(big.unwrap().is_even());
+        assert!(bigger.unwrap().is_odd());
         assert!((BigUint::from_uint(1) << 64).is_even());
         assert!(((BigUint::from_uint(1) << 64) + BigUint::from_uint(1)).is_odd());
     }
@@ -1534,15 +1543,19 @@ mod biguint_tests {
             }
         }
 
-        assert_eq!(FromStrRadix::from_str_radix::<BigUint>("Z", 10), None);
-        assert_eq!(FromStrRadix::from_str_radix::<BigUint>("_", 2), None);
-        assert_eq!(FromStrRadix::from_str_radix::<BigUint>("-1", 10), None);
+        let zed: Option<BigUint> = FromStrRadix::from_str_radix("Z", 10);
+        assert_eq!(zed, None);
+        let blank: Option<BigUint> = FromStrRadix::from_str_radix("_", 2);
+        assert_eq!(blank, None);
+        let minus_one: Option<BigUint> = FromStrRadix::from_str_radix("-1",
+                                                                      10);
+        assert_eq!(minus_one, None);
     }
 
     #[test]
     fn test_factor() {
         fn factor(n: uint) -> BigUint {
-            let mut f= One::one::<BigUint>();
+            let mut f: BigUint = One::one();
             for i in range(2, n + 1) {
                 // FIXME(#6102): Assignment operator for BigInt causes ICE
                 // f *= BigUint::from_uint(i);
@@ -1939,17 +1952,24 @@ mod bigint_tests {
 
     #[test]
     fn test_abs_sub() {
-        assert_eq!((-One::one::<BigInt>()).abs_sub(&One::one()), Zero::zero());
-        assert_eq!(One::one::<BigInt>().abs_sub(&One::one()), Zero::zero());
-        assert_eq!(One::one::<BigInt>().abs_sub(&Zero::zero()), One::one());
-        assert_eq!(One::one::<BigInt>().abs_sub(&-One::one::<BigInt>()),
-                   IntConvertible::from_int(2));
+        let zero: BigInt = Zero::zero();
+        let one: BigInt = One::one();
+        assert_eq!((-one).abs_sub(&one), zero);
+        let one: BigInt = One::one();
+        let zero: BigInt = Zero::zero();
+        assert_eq!(one.abs_sub(&one), zero);
+        let one: BigInt = One::one();
+        let zero: BigInt = Zero::zero();
+        assert_eq!(one.abs_sub(&zero), one);
+        let one: BigInt = One::one();
+        assert_eq!(one.abs_sub(&-one), IntConvertible::from_int(2));
     }
 
     #[test]
     fn test_to_str_radix() {
         fn check(n: int, ans: &str) {
-            assert!(ans == IntConvertible::from_int::<BigInt>(n).to_str_radix(10));
+            let n: BigInt = IntConvertible::from_int(n);
+            assert!(ans == n.to_str_radix(10));
         }
         check(10, "10");
         check(1, "1");
@@ -1962,7 +1982,10 @@ mod bigint_tests {
     #[test]
     fn test_from_str_radix() {
         fn check(s: &str, ans: Option<int>) {
-            let ans = ans.map_move(|n| IntConvertible::from_int::<BigInt>(n));
+            let ans = ans.map_move(|n| {
+                let x: BigInt = IntConvertible::from_int(n);
+                x
+            });
             assert_eq!(FromStrRadix::from_str_radix(s, 10), ans);
         }
         check("10", Some(10));
@@ -1980,7 +2003,8 @@ mod bigint_tests {
             BigInt::new(Minus, ~[1, 1, 1]));
         assert!(-BigInt::new(Minus, ~[1, 1, 1]) ==
             BigInt::new(Plus,  ~[1, 1, 1]));
-        assert_eq!(-Zero::zero::<BigInt>(), Zero::zero::<BigInt>());
+        let zero: BigInt = Zero::zero();
+        assert_eq!(-zero, zero);
     }
 }
 
@@ -1992,16 +2016,16 @@ mod bench {
     use extra::test::BenchHarness;
 
     fn factorial(n: uint) -> BigUint {
-        let mut f = One::one::<BigUint>();
+        let mut f: BigUint = One::one();
         for i in iterator::range_inclusive(1, n) {
             f = f * BigUint::from_uint(i);
         }
         f
     }
 
     fn fib(n: uint) -> BigUint {
-        let mut f0 = Zero::zero::<BigUint>();
-        let mut f1 = One::one::<BigUint>();
+        let mut f0: BigUint = Zero::zero();
+        let mut f1: BigUint = One::one();
         for _ in range(0, n) {
             let f2 = f0 + f1;
             f0 = util::replace(&mut f1, f2);

src/libextra/num/rational.rs

@@ -269,9 +269,13 @@ impl<T: FromStr + Clone + Integer + Ord>
     /// Parses `numer/denom`.
     fn from_str(s: &str) -> Option<Ratio<T>> {
         let split: ~[&str] = s.splitn_iter('/', 1).collect();
-        if split.len() < 2 { return None; }
-        do FromStr::from_str::<T>(split[0]).chain |a| {
-            do FromStr::from_str::<T>(split[1]).chain |b| {
+        if split.len() < 2 {
+            return None
+        }
+        let a_option: Option<T> = FromStr::from_str(split[0]);
+        do a_option.chain |a| {
+            let b_option: Option<T> = FromStr::from_str(split[1]);
+            do b_option.chain |b| {
                 Some(Ratio::new(a.clone(), b.clone()))
             }
         }
@@ -282,10 +286,15 @@ impl<T: FromStrRadix + Clone + Integer + Ord>
     /// Parses `numer/denom` where the numbers are in base `radix`.
     fn from_str_radix(s: &str, radix: uint) -> Option<Ratio<T>> {
         let split: ~[&str] = s.splitn_iter('/', 1).collect();
-        if split.len() < 2 { None }
-        else {
-            do FromStrRadix::from_str_radix::<T>(split[0], radix).chain |a| {
-                do FromStrRadix::from_str_radix::<T>(split[1], radix).chain |b| {
+        if split.len() < 2 {
+            None
+        } else {
+            let a_option: Option<T> = FromStrRadix::from_str_radix(split[0],
+                                                                   radix);
+            do a_option.chain |a| {
+                let b_option: Option<T> =
+                    FromStrRadix::from_str_radix(split[1], radix);
+                do b_option.chain |b| {
                     Some(Ratio::new(a.clone(), b.clone()))
                 }
             }
@@ -496,7 +505,8 @@ mod test {
     #[test]
     fn test_from_str_fail() {
         fn test(s: &str) {
-            assert_eq!(FromStr::from_str::<Rational>(s), None);
+            let rational: Option<Rational> = FromStr::from_str(s);
+            assert_eq!(rational, None);
         }
 
         let xs = ["0 /1", "abc", "", "1/", "--1/2","3/2/1"];
@@ -536,7 +546,8 @@ mod test {
     #[test]
     fn test_from_str_radix_fail() {
         fn test(s: &str) {
-            assert_eq!(FromStrRadix::from_str_radix::<Rational>(s, 3), None);
+            let radix: Option<Rational> = FromStrRadix::from_str_radix(s, 3);
+            assert_eq!(radix, None);
         }
 
         let xs = ["0 /1", "abc", "", "1/", "--1/2","3/2/1", "3/2"];

src/libextra/priority_queue.rs

@@ -338,27 +338,36 @@ mod tests {
 
     #[test]
     #[should_fail]
-    fn test_empty_pop() { let mut heap = PriorityQueue::new::<int>(); heap.pop(); }
+    fn test_empty_pop() {
+        let mut heap: PriorityQueue<int> = PriorityQueue::new();
+        heap.pop();
+    }
 
     #[test]
     fn test_empty_maybe_pop() {
-        let mut heap = PriorityQueue::new::<int>();
+        let mut heap: PriorityQueue<int> = PriorityQueue::new();
         assert!(heap.maybe_pop().is_none());
     }
 
     #[test]
     #[should_fail]
-    fn test_empty_top() { let empty = PriorityQueue::new::<int>(); empty.top(); }
+    fn test_empty_top() {
+        let empty: PriorityQueue<int> = PriorityQueue::new();
+        empty.top();
+    }
 
     #[test]
     fn test_empty_maybe_top() {
-        let empty = PriorityQueue::new::<int>();
+        let empty: PriorityQueue<int> = PriorityQueue::new();
         assert!(empty.maybe_top().is_none());
     }
 
     #[test]
     #[should_fail]
-    fn test_empty_replace() { let mut heap = PriorityQueue::new(); heap.replace(5); }
+    fn test_empty_replace() {
+        let mut heap: PriorityQueue<int> = PriorityQueue::new();
+        heap.replace(5);
+    }
 
     #[test]
     fn test_from_iter() {

src/libextra/ringbuf.rs

@@ -483,7 +483,7 @@ mod tests {
     #[bench]
     fn bench_new(b: &mut test::BenchHarness) {
         do b.iter {
-            let _ = RingBuf::new::<u64>();
+            let _: RingBuf<u64> = RingBuf::new();
         }
     }
 

src/libextra/stats.rs

@@ -368,7 +368,7 @@ pub fn write_boxplot(w: @io::Writer, s: &Summary, width_hint: uint) {
 /// Returns a HashMap with the number of occurrences of every element in the
 /// sequence that the iterator exposes.
 pub fn freq_count<T: Iterator<U>, U: Eq+Hash>(mut iter: T) -> hashmap::HashMap<U, uint> {
-    let mut map = hashmap::HashMap::new::<U, uint>();
+    let mut map: hashmap::HashMap<U,uint> = hashmap::HashMap::new();
     for elem in iter {
         map.insert_or_update_with(elem, 1, |_, count| *count += 1);
     }