Auto merge of #47813 - kennytm:stable-incl-range, r=nrc

Stabilize inclusive range (`..=`)

Stabilize the followings:

* `inclusive_range` — The `std::ops::RangeInclusive` and `std::ops::RangeInclusiveTo` types, except its fields (tracked by #49022 separately).
* `inclusive_range_syntax` — The `a..=b` and `..=b` expression syntax
* `dotdoteq_in_patterns` — Using `a..=b` in a pattern

cc #28237
r? @rust-lang/lang

Author: bors

src/doc/unstable-book/src/language-features/inclusive-range-syntax.md

@@ -98,7 +98,6 @@
 #![feature(fundamental)]
 #![feature(generic_param_attrs)]
 #![feature(i128_type)]
-#![feature(inclusive_range)]
 #![feature(iter_rfold)]
 #![feature(lang_items)]
 #![feature(needs_allocator)]
@@ -125,6 +124,7 @@
 #![feature(on_unimplemented)]
 #![feature(exact_chunks)]
 #![feature(pointer_methods)]
+#![feature(inclusive_range_fields)]
 
 #![cfg_attr(not(test), feature(fn_traits, placement_new_protocol, swap_with_slice, i128))]
 #![cfg_attr(test, feature(test, box_heap))]

src/liballoc/lib.rs

@@ -103,7 +103,7 @@ impl<T> RangeArgument<T> for Range<T> {
     }
 }
 
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 impl<T> RangeArgument<T> for RangeInclusive<T> {
     fn start(&self) -> Bound<&T> {
         Included(&self.start)
@@ -113,7 +113,7 @@ impl<T> RangeArgument<T> for RangeInclusive<T> {
     }
 }
 
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 impl<T> RangeArgument<T> for RangeToInclusive<T> {
     fn start(&self) -> Bound<&T> {
         Unbounded

src/liballoc/range.rs

@@ -1950,7 +1950,7 @@ impl ops::Index<ops::RangeFull> for String {
         unsafe { str::from_utf8_unchecked(&self.vec) }
     }
 }
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 impl ops::Index<ops::RangeInclusive<usize>> for String {
     type Output = str;
 
@@ -1959,7 +1959,7 @@ impl ops::Index<ops::RangeInclusive<usize>> for String {
         Index::index(&**self, index)
     }
 }
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 impl ops::Index<ops::RangeToInclusive<usize>> for String {
     type Output = str;
 
@@ -1997,14 +1997,14 @@ impl ops::IndexMut<ops::RangeFull> for String {
         unsafe { str::from_utf8_unchecked_mut(&mut *self.vec) }
     }
 }
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 impl ops::IndexMut<ops::RangeInclusive<usize>> for String {
     #[inline]
     fn index_mut(&mut self, index: ops::RangeInclusive<usize>) -> &mut str {
         IndexMut::index_mut(&mut **self, index)
     }
 }
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 impl ops::IndexMut<ops::RangeToInclusive<usize>> for String {
     #[inline]
     fn index_mut(&mut self, index: ops::RangeToInclusive<usize>) -> &mut str {

src/liballoc/string.rs

@@ -14,7 +14,7 @@
 #![feature(alloc_system)]
 #![feature(attr_literals)]
 #![feature(box_syntax)]
-#![feature(inclusive_range_syntax)]
+#![cfg_attr(stage0, feature(inclusive_range_syntax))]
 #![feature(collection_placement)]
 #![feature(const_fn)]
 #![feature(drain_filter)]
@@ -30,6 +30,7 @@
 #![feature(unboxed_closures)]
 #![feature(unicode)]
 #![feature(exact_chunks)]
+#![feature(inclusive_range_fields)]
 
 extern crate alloc_system;
 extern crate std_unicode;

src/liballoc/tests/lib.rs

@@ -186,9 +186,7 @@ macro_rules! range_exact_iter_impl {
 
 macro_rules! range_incl_exact_iter_impl {
     ($($t:ty)*) => ($(
-        #[unstable(feature = "inclusive_range",
-                   reason = "recently added, follows RFC",
-                   issue = "28237")]
+        #[stable(feature = "inclusive_range", since = "1.26.0")]
         impl ExactSizeIterator for ops::RangeInclusive<$t> { }
     )*)
 }
@@ -202,9 +200,7 @@ macro_rules! range_trusted_len_impl {
 
 macro_rules! range_incl_trusted_len_impl {
     ($($t:ty)*) => ($(
-        #[unstable(feature = "inclusive_range",
-                   reason = "recently added, follows RFC",
-                   issue = "28237")]
+        #[stable(feature = "inclusive_range", since = "1.26.0")]
         unsafe impl TrustedLen for ops::RangeInclusive<$t> { }
     )*)
 }
@@ -328,7 +324,7 @@ impl<A: Step> FusedIterator for ops::RangeFrom<A> {}
 #[unstable(feature = "trusted_len", issue = "37572")]
 unsafe impl<A: Step> TrustedLen for ops::RangeFrom<A> {}
 
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 impl<A: Step> Iterator for ops::RangeInclusive<A> {
     type Item = A;
 
@@ -422,7 +418,7 @@ impl<A: Step> Iterator for ops::RangeInclusive<A> {
     }
 }
 
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 impl<A: Step> DoubleEndedIterator for ops::RangeInclusive<A> {
     #[inline]
     fn next_back(&mut self) -> Option<A> {

src/libcore/iter/range.rs

@@ -79,7 +79,7 @@
 #![feature(fn_must_use)]
 #![feature(fundamental)]
 #![feature(i128_type)]
-#![feature(inclusive_range_syntax)]
+#![cfg_attr(stage0, feature(inclusive_range_syntax))]
 #![feature(intrinsics)]
 #![feature(iterator_flatten)]
 #![feature(iterator_repeat_with)]

src/libcore/lib.rs

@@ -191,7 +191,7 @@ pub use self::index::{Index, IndexMut};
 #[stable(feature = "rust1", since = "1.0.0")]
 pub use self::range::{Range, RangeFrom, RangeFull, RangeTo};
 
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 pub use self::range::{RangeInclusive, RangeToInclusive};
 
 #[unstable(feature = "try_trait", issue = "42327")]

src/libcore/ops/mod.rs

@@ -128,7 +128,7 @@ impl<Idx: PartialOrd<Idx>> Range<Idx> {
     /// The range is empty if either side is incomparable:
     ///
     /// ```
-    /// #![feature(range_is_empty,inclusive_range_syntax)]
+    /// #![feature(range_is_empty)]
     ///
     /// use std::f32::NAN;
     /// assert!(!(3.0..5.0).is_empty());
@@ -283,7 +283,7 @@ impl<Idx: PartialOrd<Idx>> RangeTo<Idx> {
 /// # Examples
 ///
 /// ```
-/// #![feature(inclusive_range,inclusive_range_syntax)]
+/// #![feature(inclusive_range_fields)]
 ///
 /// assert_eq!((3..=5), std::ops::RangeInclusive { start: 3, end: 5 });
 /// assert_eq!(3 + 4 + 5, (3..=5).sum());
@@ -293,21 +293,17 @@ impl<Idx: PartialOrd<Idx>> RangeTo<Idx> {
 /// assert_eq!(arr[1..=2], [  1,2  ]);  // RangeInclusive
 /// ```
 #[derive(Clone, PartialEq, Eq, Hash)]  // not Copy -- see #27186
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 pub struct RangeInclusive<Idx> {
     /// The lower bound of the range (inclusive).
-    #[unstable(feature = "inclusive_range",
-               reason = "recently added, follows RFC",
-               issue = "28237")]
+    #[unstable(feature = "inclusive_range_fields", issue = "49022")]
     pub start: Idx,
     /// The upper bound of the range (inclusive).
-    #[unstable(feature = "inclusive_range",
-               reason = "recently added, follows RFC",
-               issue = "28237")]
+    #[unstable(feature = "inclusive_range_fields", issue = "49022")]
     pub end: Idx,
 }
 
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 impl<Idx: fmt::Debug> fmt::Debug for RangeInclusive<Idx> {
     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
         write!(fmt, "{:?}..={:?}", self.start, self.end)
@@ -320,7 +316,7 @@ impl<Idx: PartialOrd<Idx>> RangeInclusive<Idx> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(range_contains,inclusive_range_syntax)]
+    /// #![feature(range_contains)]
     ///
     /// assert!(!(3..=5).contains(2));
     /// assert!( (3..=5).contains(3));
@@ -341,7 +337,7 @@ impl<Idx: PartialOrd<Idx>> RangeInclusive<Idx> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(range_is_empty,inclusive_range_syntax)]
+    /// #![feature(range_is_empty)]
     ///
     /// assert!(!(3..=5).is_empty());
     /// assert!(!(3..=3).is_empty());
@@ -351,7 +347,7 @@ impl<Idx: PartialOrd<Idx>> RangeInclusive<Idx> {
     /// The range is empty if either side is incomparable:
     ///
     /// ```
-    /// #![feature(range_is_empty,inclusive_range_syntax)]
+    /// #![feature(range_is_empty)]
     ///
     /// use std::f32::NAN;
     /// assert!(!(3.0..=5.0).is_empty());
@@ -362,7 +358,7 @@ impl<Idx: PartialOrd<Idx>> RangeInclusive<Idx> {
     /// This method returns `true` after iteration has finished:
     ///
     /// ```
-    /// #![feature(range_is_empty,inclusive_range_syntax)]
+    /// #![feature(range_is_empty)]
     ///
     /// let mut r = 3..=5;
     /// for _ in r.by_ref() {}
@@ -385,16 +381,13 @@ impl<Idx: PartialOrd<Idx>> RangeInclusive<Idx> {
 /// The `..=end` syntax is a `RangeToInclusive`:
 ///
 /// ```
-/// #![feature(inclusive_range,inclusive_range_syntax)]
 /// assert_eq!((..=5), std::ops::RangeToInclusive{ end: 5 });
 /// ```
 ///
 /// It does not have an [`IntoIterator`] implementation, so you can't use it in a
 /// `for` loop directly. This won't compile:
 ///
 /// ```compile_fail,E0277
-/// #![feature(inclusive_range_syntax)]
-///
 /// // error[E0277]: the trait bound `std::ops::RangeToInclusive<{integer}>:
 /// // std::iter::Iterator` is not satisfied
 /// for i in ..=5 {
@@ -406,8 +399,6 @@ impl<Idx: PartialOrd<Idx>> RangeInclusive<Idx> {
 /// array elements up to and including the index indicated by `end`.
 ///
 /// ```
-/// #![feature(inclusive_range_syntax)]
-///
 /// let arr = [0, 1, 2, 3];
 /// assert_eq!(arr[ ..=2], [0,1,2  ]);  // RangeToInclusive
 /// assert_eq!(arr[1..=2], [  1,2  ]);
@@ -417,16 +408,14 @@ impl<Idx: PartialOrd<Idx>> RangeInclusive<Idx> {
 /// [`Iterator`]: ../iter/trait.IntoIterator.html
 /// [slicing index]: ../slice/trait.SliceIndex.html
 #[derive(Copy, Clone, PartialEq, Eq, Hash)]
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 pub struct RangeToInclusive<Idx> {
     /// The upper bound of the range (inclusive)
-    #[unstable(feature = "inclusive_range",
-               reason = "recently added, follows RFC",
-               issue = "28237")]
+    #[stable(feature = "inclusive_range", since = "1.26.0")]
     pub end: Idx,
 }
 
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 impl<Idx: fmt::Debug> fmt::Debug for RangeToInclusive<Idx> {
     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
         write!(fmt, "..={:?}", self.end)
@@ -440,7 +429,7 @@ impl<Idx: PartialOrd<Idx>> RangeToInclusive<Idx> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(range_contains,inclusive_range_syntax)]
+    /// #![feature(range_contains)]
     ///
     /// assert!( (..=5).contains(-1_000_000_000));
     /// assert!( (..=5).contains(5));

src/libcore/ops/range.rs

@@ -1039,7 +1039,7 @@ impl<T> SliceIndex<[T]> for ops::RangeFull {
 }
 
 
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 impl<T> SliceIndex<[T]> for ops::RangeInclusive<usize> {
     type Output = [T];
 
@@ -1080,7 +1080,7 @@ impl<T> SliceIndex<[T]> for ops::RangeInclusive<usize> {
     }
 }
 
-#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
+#[stable(feature = "inclusive_range", since = "1.26.0")]
 impl<T> SliceIndex<[T]> for ops::RangeToInclusive<usize> {
     type Output = [T];