pprust: use as_deref

Centril · Centril · commit 7962ccb216e9 · 2020-01-22T01:38:05.000+01:00
diff --git a/src/libsyntax/print/pprust.rs b/src/libsyntax/print/pprust.rs
@@ -1643,7 +1643,7 @@ impl<'a> State<'a> {
                     self.print_expr_as_cond(i);
                     self.s.space();
                     self.print_block(then);
-                    self.print_else(e.as_ref().map(|e| &**e))
+                    self.print_else(e.as_deref())
                 }
                 // Final `else` block.
                 ast::ExprKind::Block(ref b, _) => {
@@ -1947,7 +1947,7 @@ impl<'a> State<'a> {
                 self.print_let(pat, scrutinee);
             }
             ast::ExprKind::If(ref test, ref blk, ref elseopt) => {
-                self.print_if(test, blk, elseopt.as_ref().map(|e| &**e));
+                self.print_if(test, blk, elseopt.as_deref())
             }
             ast::ExprKind::While(ref test, ref blk, opt_label) => {
                 if let Some(label) = opt_label {

Original file line number	Diff line number	Diff line change
`@@ -1643,7 +1643,7 @@ impl<'a> State<'a> {`
`1643`	`1643`	`self.print_expr_as_cond(i);`
`1644`	`1644`	`self.s.space();`
`1645`	`1645`	`self.print_block(then);`
`1646`		`- self.print_else(e.as_ref().map(\|e\| &**e))`
	`1646`	`+ self.print_else(e.as_deref())`
`1647`	`1647`	`}`
`1648`	`1648`	// Final `else` block.
`1649`	`1649`	`ast::ExprKind::Block(ref b, _) => {`
`@@ -1947,7 +1947,7 @@ impl<'a> State<'a> {`
`1947`	`1947`	`self.print_let(pat, scrutinee);`
`1948`	`1948`	`}`
`1949`	`1949`	`ast::ExprKind::If(ref test, ref blk, ref elseopt) => {`
`1950`		`- self.print_if(test, blk, elseopt.as_ref().map(\|e\| &**e));`
	`1950`	`+ self.print_if(test, blk, elseopt.as_deref())`
`1951`	`1951`	`}`
`1952`	`1952`	`ast::ExprKind::While(ref test, ref blk, opt_label) => {`
`1953`	`1953`	`if let Some(label) = opt_label {`