Rollup merge of #84466 - jyn514:prim-str, r=GuillaumeGomez

rustdoc: Remove `PrimitiveType::{to_url_str, as_str}`

These can easily be rewritten in terms of `as_sym`, and this avoids bugs where the two get out of sync.

I don't expect this to have a perf impact, but I'll start a perf run just in case.

src/librustdoc/clean/types.rs

@@ -1767,37 +1767,6 @@ impl PrimitiveType {
         }
     }
 
-    crate fn as_str(&self) -> &'static str {
-        use self::PrimitiveType::*;
-        match *self {
-            Isize => "isize",
-            I8 => "i8",
-            I16 => "i16",
-            I32 => "i32",
-            I64 => "i64",
-            I128 => "i128",
-            Usize => "usize",
-            U8 => "u8",
-            U16 => "u16",
-            U32 => "u32",
-            U64 => "u64",
-            U128 => "u128",
-            F32 => "f32",
-            F64 => "f64",
-            Str => "str",
-            Bool => "bool",
-            Char => "char",
-            Array => "array",
-            Slice => "slice",
-            Tuple => "tuple",
-            Unit => "unit",
-            RawPointer => "pointer",
-            Reference => "reference",
-            Fn => "fn",
-            Never => "never",
-        }
-    }
-
     crate fn impls(&self, tcx: TyCtxt<'_>) -> &'static ArrayVec<DefId, 4> {
         Self::all_impls(tcx).get(self).expect("missing impl for primitive type")
     }
@@ -1860,10 +1829,6 @@ impl PrimitiveType {
         })
     }
 
-    crate fn to_url_str(&self) -> &'static str {
-        self.as_str()
-    }
-
     crate fn as_sym(&self) -> Symbol {
         use PrimitiveType::*;
         match self {

src/librustdoc/html/format.rs

@@ -574,7 +574,7 @@ fn primitive_link(
                     f,
                     "<a class=\"primitive\" href=\"{}primitive.{}.html\">",
                     "../".repeat(len),
-                    prim.to_url_str()
+                    prim.as_sym()
                 )?;
                 needs_termination = true;
             }
@@ -603,7 +603,7 @@ fn primitive_link(
                         f,
                         "<a class=\"primitive\" href=\"{}/primitive.{}.html\">",
                         loc.join("/"),
-                        prim.to_url_str()
+                        prim.as_sym()
                     )?;
                     needs_termination = true;
                 }
@@ -677,7 +677,7 @@ fn fmt_type<'cx>(
             fmt::Display::fmt(&tybounds(param_names, cx), f)
         }
         clean::Infer => write!(f, "_"),
-        clean::Primitive(prim) => primitive_link(f, prim, prim.as_str(), cx),
+        clean::Primitive(prim) => primitive_link(f, prim, &*prim.as_sym().as_str(), cx),
         clean::BareFunction(ref decl) => {
             if f.alternate() {
                 write!(

src/librustdoc/json/conversions.rs

@@ -379,7 +379,7 @@ impl FromWithTcx<clean::Type> for Type {
                     .unwrap_or_default(),
             },
             Generic(s) => Type::Generic(s.to_string()),
-            Primitive(p) => Type::Primitive(p.as_str().to_string()),
+            Primitive(p) => Type::Primitive(p.as_sym().to_string()),
             BareFunction(f) => Type::FunctionPointer(Box::new((*f).into_tcx(tcx))),
             Tuple(t) => Type::Tuple(t.into_iter().map(|x| x.into_tcx(tcx)).collect()),
             Slice(t) => Type::Slice(Box::new((*t).into_tcx(tcx))),

src/librustdoc/passes/collect_intra_doc_links.rs

@@ -91,10 +91,10 @@ impl Res {
         }
     }
 
-    fn name(self, tcx: TyCtxt<'_>) -> String {
+    fn name(self, tcx: TyCtxt<'_>) -> Symbol {
         match self {
-            Res::Def(_, id) => tcx.item_name(id).to_string(),
-            Res::Primitive(prim) => prim.as_str().to_string(),
+            Res::Def(_, id) => tcx.item_name(id),
+            Res::Primitive(prim) => prim.as_sym(),
         }
     }
 
@@ -388,7 +388,7 @@ impl<'a, 'tcx> LinkCollector<'a, 'tcx> {
                         ty::AssocKind::Const => "associatedconstant",
                         ty::AssocKind::Type => "associatedtype",
                     };
-                    let fragment = format!("{}#{}.{}", prim_ty.as_str(), out, item_name);
+                    let fragment = format!("{}#{}.{}", prim_ty.as_sym(), out, item_name);
                     (Res::Primitive(prim_ty), fragment, Some((kind.as_def_kind(), item.def_id)))
                 })
         })
@@ -481,7 +481,7 @@ impl<'a, 'tcx> LinkCollector<'a, 'tcx> {
                             AnchorFailure::RustdocAnchorConflict(res),
                         ));
                     }
-                    return Ok((res, Some(ty.as_str().to_owned())));
+                    return Ok((res, Some(ty.as_sym().to_string())));
                 }
                 _ => return Ok((res, extra_fragment.clone())),
             }
@@ -1148,7 +1148,7 @@ impl LinkCollector<'_, '_> {
                         return None;
                     }
                     res = prim;
-                    fragment = Some(prim.name(self.cx.tcx));
+                    fragment = Some(prim.name(self.cx.tcx).to_string());
                 } else {
                     // `[char]` when a `char` module is in scope
                     let candidates = vec![res, prim];