Improve the code quality by using matches macro

Polkaverse · Polkaverse · commit 57b5f8cbb922 · 2020-12-22T20:52:38.000+05:30
diff --git a/compiler/rustc_middle/src/ty/sty.rs b/compiler/rustc_middle/src/ty/sty.rs
@@ -1628,17 +1628,11 @@ impl RegionKind {
     }
 
     pub fn is_late_bound(&self) -> bool {
-        match *self {
-            ty::ReLateBound(..) => true,
-            _ => false,
-        }
+        matches!(*self, ty::ReLateBound(..))
     }
 
     pub fn is_placeholder(&self) -> bool {
-        match *self {
-            ty::RePlaceholder(..) => true,
-            _ => false,
-        }
+        matches!(*self, ty::RePlaceholder(..))
     }
 
     pub fn bound_at_or_above_binder(&self, index: DebruijnIndex) -> bool {

Original file line number	Diff line number	Diff line change
`@@ -1628,17 +1628,11 @@ impl RegionKind {`
`1628`	`1628`	`}`
`1629`	`1629`
`1630`	`1630`	`pub fn is_late_bound(&self) -> bool {`
`1631`		`- match *self {`
`1632`		`- ty::ReLateBound(..) => true,`
`1633`		`- _ => false,`
`1634`		`- }`
	`1631`	`+ matches!(*self, ty::ReLateBound(..))`
`1635`	`1632`	`}`
`1636`	`1633`
`1637`	`1634`	`pub fn is_placeholder(&self) -> bool {`
`1638`		`- match *self {`
`1639`		`- ty::RePlaceholder(..) => true,`
`1640`		`- _ => false,`
`1641`		`- }`
	`1635`	`+ matches!(*self, ty::RePlaceholder(..))`
`1642`	`1636`	`}`
`1643`	`1637`
`1644`	`1638`	`pub fn bound_at_or_above_binder(&self, index: DebruijnIndex) -> bool {`