Generalize TyCtxt::item_name.

Author: cjgillot

compiler/rustc_hir_analysis/src/check/intrinsic.rs

@@ -59,7 +59,7 @@ fn equate_intrinsic_type<'tcx>(
 
 /// Returns the unsafety of the given intrinsic.
 fn intrinsic_operation_unsafety(tcx: TyCtxt<'_>, intrinsic_id: LocalDefId) -> hir::Safety {
-    let is_in_list = match tcx.item_name(intrinsic_id.into()) {
+    let is_in_list = match tcx.item_name(intrinsic_id) {
         // When adding a new intrinsic to this list,
         // it's usually worth updating that intrinsic's documentation
         // to note that it's safe to call, since
@@ -143,7 +143,7 @@ fn intrinsic_operation_unsafety(tcx: TyCtxt<'_>, intrinsic_id: LocalDefId) -> hi
             tcx.def_span(intrinsic_id),
             DiagMessage::from(format!(
                 "intrinsic safety mismatch between list of intrinsics within the compiler and core library intrinsics for intrinsic `{}`",
-                tcx.item_name(intrinsic_id.into())
+                tcx.item_name(intrinsic_id)
             )
         )).emit();
     }

compiler/rustc_middle/src/ty/mod.rs

@@ -1606,7 +1606,8 @@ impl<'tcx> TyCtxt<'tcx> {
     }
 
     /// Look up the name of a definition across crates. This does not look at HIR.
-    pub fn opt_item_name(self, def_id: DefId) -> Option<Symbol> {
+    pub fn opt_item_name(self, def_id: impl IntoQueryParam<DefId>) -> Option<Symbol> {
+        let def_id = def_id.into_query_param();
         if let Some(cnum) = def_id.as_crate_root() {
             Some(self.crate_name(cnum))
         } else {
@@ -1626,7 +1627,8 @@ impl<'tcx> TyCtxt<'tcx> {
     /// [`opt_item_name`] instead.
     ///
     /// [`opt_item_name`]: Self::opt_item_name
-    pub fn item_name(self, id: DefId) -> Symbol {
+    pub fn item_name(self, id: impl IntoQueryParam<DefId>) -> Symbol {
+        let id = id.into_query_param();
         self.opt_item_name(id).unwrap_or_else(|| {
             bug!("item_name: no name for {:?}", self.def_path(id));
         })
@@ -1635,7 +1637,8 @@ impl<'tcx> TyCtxt<'tcx> {
     /// Look up the name and span of a definition.
     ///
     /// See [`item_name`][Self::item_name] for more information.
-    pub fn opt_item_ident(self, def_id: DefId) -> Option<Ident> {
+    pub fn opt_item_ident(self, def_id: impl IntoQueryParam<DefId>) -> Option<Ident> {
+        let def_id = def_id.into_query_param();
         let def = self.opt_item_name(def_id)?;
         let span = self
             .def_ident_span(def_id)
@@ -1646,7 +1649,8 @@ impl<'tcx> TyCtxt<'tcx> {
     /// Look up the name and span of a definition.
     ///
     /// See [`item_name`][Self::item_name] for more information.
-    pub fn item_ident(self, def_id: DefId) -> Ident {
+    pub fn item_ident(self, def_id: impl IntoQueryParam<DefId>) -> Ident {
+        let def_id = def_id.into_query_param();
         self.opt_item_ident(def_id).unwrap_or_else(|| {
             bug!("item_ident: no name for {:?}", self.def_path(def_id));
         })

compiler/rustc_middle/src/ty/util.rs

@@ -1680,7 +1680,7 @@ pub fn intrinsic_raw(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Option<ty::Intrinsi
             _ => true,
         };
         Some(ty::IntrinsicDef {
-            name: tcx.item_name(def_id.into()),
+            name: tcx.item_name(def_id),
             must_be_overridden,
             const_stable: tcx.has_attr(def_id, sym::rustc_intrinsic_const_stable_indirect),
         })

compiler/rustc_mir_build/src/thir/pattern/check_match.rs

@@ -1069,7 +1069,7 @@ fn find_fallback_pattern_typo<'tcx>(
                 && infcx.can_eq(param_env, ty, cx.tcx.type_of(item.owner_id).instantiate_identity())
             {
                 // Look for local consts.
-                let item_name = cx.tcx.item_name(item.owner_id.into());
+                let item_name = cx.tcx.item_name(item.owner_id);
                 let vis = cx.tcx.visibility(item.owner_id);
                 if vis.is_accessible_from(parent, cx.tcx) {
                     accessible.push(item_name);

compiler/rustc_passes/src/abi_test.rs

@@ -79,7 +79,7 @@ fn dump_abi_of_fn_item(tcx: TyCtxt<'_>, item_def_id: LocalDefId, attr: &Attribut
     for meta_item in meta_items {
         match meta_item.name() {
             Some(sym::debug) => {
-                let fn_name = tcx.item_name(item_def_id.into());
+                let fn_name = tcx.item_name(item_def_id);
                 tcx.dcx().emit_err(AbiOf {
                     span: tcx.def_span(item_def_id),
                     fn_name,
@@ -135,7 +135,7 @@ fn dump_abi_of_fn_type(tcx: TyCtxt<'_>, item_def_id: LocalDefId, attr: &Attribut
                     item_def_id,
                 );
 
-                let fn_name = tcx.item_name(item_def_id.into());
+                let fn_name = tcx.item_name(item_def_id);
                 tcx.dcx().emit_err(AbiOf { span, fn_name, fn_abi: format!("{:#?}", abi) });
             }
             Some(sym::assert_eq) => {