Replace deref with as_deref

Author: JohnTitor

Diff for: src/librustc/hir/print.rs

@@ -941,7 +941,7 @@ impl<'a> State<'a> {
         self.maybe_print_comment(st.span.lo());
         match st.node {
             hir::StmtKind::Local(ref loc) => {
-                self.print_local(loc.init.deref(), |this| this.print_local_decl(&loc));
+                self.print_local(loc.init.as_deref(), |this| this.print_local_decl(&loc));
             }
             hir::StmtKind::Item(item) => {
                 self.ann.nested(self, Nested::Item(item))

Diff for: src/librustc_typeck/check/expr.rs

@@ -226,7 +226,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                 tcx.mk_unit()
             }
             ExprKind::Break(destination, ref expr_opt) => {
-                self.check_expr_break(destination, expr_opt.deref(), expr)
+                self.check_expr_break(destination, expr_opt.as_deref(), expr)
             }
             ExprKind::Continue(destination) => {
                 if destination.target_id.is_ok() {
@@ -237,7 +237,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                 }
             }
             ExprKind::Ret(ref expr_opt) => {
-                self.check_expr_return(expr_opt.deref(), expr)
+                self.check_expr_return(expr_opt.as_deref(), expr)
             }
             ExprKind::Assign(ref lhs, ref rhs) => {
                 self.check_expr_assign(expr, expected, lhs, rhs)

Diff for: src/librustdoc/html/render.rs

@@ -2137,7 +2137,7 @@ impl Context {
         self.shared.fs.write(&final_file, &v)?;
 
         // Generating settings page.
-        let settings = Settings::new(self.shared.static_root_path.deref().unwrap_or("./"),
+        let settings = Settings::new(self.shared.static_root_path.as_deref().unwrap_or("./"),
                                      &self.shared.resource_suffix);
         page.title = "Rustdoc settings";
         page.description = "Settings of Rustdoc";

Diff for: src/test/ui/issues/issue-50264-inner-deref-trait/option-as_deref.stderr

@@ -2,7 +2,7 @@ error[E0599]: no method named `as_deref` found for type `std::option::Option<{in
   --> $DIR/option-as_deref.rs:4:29
    |
 LL |     let _result = &Some(42).as_deref();
-   |                             ^^^^^^^^ help: did you mean: `as_ref`
+   |                             ^^^^^^^^ help: there is a method with a similar name: `as_ref`
    |
    = note: the method `as_deref` exists but the following trait bounds were not satisfied:
            `{integer} : std::ops::Deref`

Diff for: src/test/ui/issues/issue-50264-inner-deref-trait/result-as_deref.stderr

@@ -2,7 +2,7 @@ error[E0599]: no method named `as_deref` found for type `std::result::Result<{in
   --> $DIR/result-as_deref.rs:4:27
    |
 LL |     let _result = &Ok(42).as_deref();
-   |                           ^^^^^^^^ help: did you mean: `as_ref`
+   |                           ^^^^^^^^ help: there is a method with a similar name: `as_ref`
    |
    = note: the method `as_deref` exists but the following trait bounds were not satisfied:
            `{integer} : std::ops::Deref`

Diff for: src/test/ui/issues/issue-50264-inner-deref-trait/result-as_deref_err.stderr

@@ -2,7 +2,7 @@ error[E0599]: no method named `as_deref_err` found for type `std::result::Result
   --> $DIR/result-as_deref_err.rs:4:28
    |
 LL |     let _result = &Err(41).as_deref_err();
-   |                            ^^^^^^^^^^^^ help: did you mean: `as_deref_ok`
+   |                            ^^^^^^^^^^^^ help: there is a method with a similar name: `as_deref_ok`
    |
    = note: the method `as_deref_err` exists but the following trait bounds were not satisfied:
            `{integer} : std::ops::Deref`

Diff for: src/test/ui/issues/issue-50264-inner-deref-trait/result-as_deref_mut.stderr

@@ -2,7 +2,7 @@ error[E0599]: no method named `as_deref_mut` found for type `std::result::Result
   --> $DIR/result-as_deref_mut.rs:4:31
    |
 LL |     let _result = &mut Ok(42).as_deref_mut();
-   |                               ^^^^^^^^^^^^ help: did you mean: `as_deref_err`
+   |                               ^^^^^^^^^^^^ help: there is a method with a similar name: `as_deref_err`
    |
    = note: the method `as_deref_mut` exists but the following trait bounds were not satisfied:
            `{integer} : std::ops::DerefMut`

Diff for: src/test/ui/issues/issue-50264-inner-deref-trait/result-as_deref_mut_err.stderr

@@ -2,7 +2,7 @@ error[E0599]: no method named `as_deref_mut_err` found for type `std::result::Re
   --> $DIR/result-as_deref_mut_err.rs:4:32
    |
 LL |     let _result = &mut Err(41).as_deref_mut_err();
-   |                                ^^^^^^^^^^^^^^^^ help: did you mean: `as_deref_mut_ok`
+   |                                ^^^^^^^^^^^^^^^^ help: there is a method with a similar name: `as_deref_mut_ok`
    |
    = note: the method `as_deref_mut_err` exists but the following trait bounds were not satisfied:
            `{integer} : std::ops::DerefMut`

Diff for: src/test/ui/issues/issue-50264-inner-deref-trait/result-as_deref_mut_ok.stderr

@@ -2,7 +2,7 @@ error[E0599]: no method named `as_deref_mut_ok` found for type `std::result::Res
   --> $DIR/result-as_deref_mut_ok.rs:4:31
    |
 LL |     let _result = &mut Ok(42).as_deref_mut_ok();
-   |                               ^^^^^^^^^^^^^^^ help: did you mean: `as_deref_mut_err`
+   |                               ^^^^^^^^^^^^^^^ help: there is a method with a similar name: `as_deref_mut_err`
    |
    = note: the method `as_deref_mut_ok` exists but the following trait bounds were not satisfied:
            `{integer} : std::ops::DerefMut`

Diff for: src/test/ui/issues/issue-50264-inner-deref-trait/result-as_deref_ok.stderr

@@ -2,7 +2,7 @@ error[E0599]: no method named `as_deref_ok` found for type `std::result::Result<
   --> $DIR/result-as_deref_ok.rs:4:27
    |
 LL |     let _result = &Ok(42).as_deref_ok();
-   |                           ^^^^^^^^^^^ help: did you mean: `as_deref_err`
+   |                           ^^^^^^^^^^^ help: there is a method with a similar name: `as_deref_err`
    |
    = note: the method `as_deref_ok` exists but the following trait bounds were not satisfied:
            `{integer} : std::ops::Deref`