Add natvis for Range types

Author: wesleywiser

src/etc/natvis/libcore.natvis

@@ -75,6 +75,22 @@
     <DisplayString>{__0}</DisplayString>
   </Type>
 
+  <Type Name="core::ops::range::Range&lt;*&gt;">
+    <DisplayString>({start}..{end})</DisplayString>
+  </Type>
+  <Type Name="core::ops::range::RangeFrom&lt;*&gt;">
+    <DisplayString>({start}..)</DisplayString>
+  </Type>
+  <Type Name="core::ops::range::RangeInclusive&lt;*&gt;">
+    <DisplayString>({start}..={end})</DisplayString>
+  </Type>
+  <Type Name="core::ops::range::RangeTo&lt;*&gt;">
+    <DisplayString>(..{end})</DisplayString>
+  </Type>
+  <Type Name="core::ops::range::RangeToInclusive&lt;*&gt;">
+    <DisplayString>(..={end})</DisplayString>
+  </Type>
+
   <Type Name="core::ptr::non_null::NonNull&lt;*&gt;">
     <DisplayString>NonNull({(void*) pointer}: {pointer})</DisplayString>
     <Expand>

src/test/debuginfo/range-types.rs

@@ -9,38 +9,40 @@
 // cdb-command: g
 
 // cdb-command: dx r1,d
-// cdb-check:r1,d             [Type: core::ops::range::Range<i32>]
-// cdb-check:    [...] start            : 3 [Type: int]
-// cdb-check:    [...] end              : 5 [Type: int]
+// cdb-check:r1,d             : (3..5) [Type: core::ops::range::Range<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::ops::range::Range<i32>]
 
 // cdb-command: dx r2,d
-// cdb-check:r2,d             [Type: core::ops::range::RangeFrom<i32>]
-// cdb-check:    [...] start            : 2 [Type: int]
+// cdb-check:r2,d             : (2..) [Type: core::ops::range::RangeFrom<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::ops::range::RangeFrom<i32>]
 
 // cdb-command: dx r3,d
-// cdb-check:r3,d             [Type: core::ops::range::RangeInclusive<i32>]
-// cdb-check:    [...] start            : 1 [Type: int]
-// cdb-check:    [...] end              : 4 [Type: int]
-// cdb-check:    [...] exhausted        : false [Type: bool]
+// cdb-check:r3,d             : (1..=4) [Type: core::ops::range::RangeInclusive<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::ops::range::RangeInclusive<i32>]
 
 // cdb-command: dx r4,d
-// cdb-check:r4,d             [Type: core::ops::range::RangeToInclusive<i32>]
-// cdb-check:    [...] end              : 3 [Type: int]
+// cdb-check:r4,d             : (..10) [Type: core::ops::range::RangeTo<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::ops::range::RangeTo<i32>]
 
 // cdb-command: dx r5,d
-// cdb-check:r5,d             [Type: core::ops::range::RangeFull]
+// cdb-check:r5,d             : (..=3) [Type: core::ops::range::RangeToInclusive<i32>]
+// cdb-check:    [<Raw View>]     [Type: core::ops::range::RangeToInclusive<i32>]
+
+// cdb-command: dx r6,d
+// cdb-check:r6,d             [Type: core::ops::range::RangeFull]
 
 #[allow(unused_variables)]
 
 use std::ops::{Range, RangeFrom, RangeFull, RangeInclusive, RangeToInclusive};
 
 fn main()
 {
-    let r1 = Range{start: 3, end: 5};
-    let r2 = RangeFrom{start: 2};
-    let r3 = RangeInclusive::new(1, 4);
-    let r4 = RangeToInclusive{end: 3};
-    let r5 = RangeFull{};
+    let r1 = (3..5);
+    let r2 = (2..);
+    let r3 = (1..=4);
+    let r4 = (..10);
+    let r5 = (..=3);
+    let r6 = (..);
     zzz(); // #break
 }