rustc: rename DefId::to_local to expect_local and use it instead of LocalDefId::from_def_id.

src/librustc/dep_graph/dep_node.rs

@@ -425,7 +425,7 @@ impl<'tcx> DepNodeParams<'tcx> for LocalDefId {
     }
 
     fn recover(tcx: TyCtxt<'tcx>, dep_node: &DepNode) -> Option<Self> {
-        dep_node.extract_def_id(tcx).map(|id| id.to_local())
+        dep_node.extract_def_id(tcx).map(|id| id.expect_local())
     }
 }
 

src/librustc/ty/query/on_disk_cache.rs

@@ -657,7 +657,7 @@ impl<'a, 'tcx> SpecializedDecoder<DefId> for CacheDecoder<'a, 'tcx> {
 impl<'a, 'tcx> SpecializedDecoder<LocalDefId> for CacheDecoder<'a, 'tcx> {
     #[inline]
     fn specialized_decode(&mut self) -> Result<LocalDefId, Self::Error> {
-        Ok(LocalDefId::from_def_id(DefId::decode(self)?))
+        Ok(DefId::decode(self)?.expect_local())
     }
 }
 

src/librustc_metadata/rmeta/decoder.rs

@@ -364,7 +364,7 @@ impl<'a, 'tcx> SpecializedDecoder<DefIndex> for DecodeContext<'a, 'tcx> {
 impl<'a, 'tcx> SpecializedDecoder<LocalDefId> for DecodeContext<'a, 'tcx> {
     #[inline]
     fn specialized_decode(&mut self) -> Result<LocalDefId, Self::Error> {
-        self.specialized_decode().map(|i| LocalDefId::from_def_id(i))
+        Ok(DefId::decode(self)?.expect_local())
     }
 }
 

src/librustc_mir/borrow_check/universal_regions.rs

@@ -774,7 +774,7 @@ fn for_each_late_bound_region_defined_on<'tcx>(
     fn_def_id: DefId,
     mut f: impl FnMut(ty::Region<'tcx>),
 ) {
-    if let Some(late_bounds) = tcx.is_late_bound_map(fn_def_id.to_local()) {
+    if let Some(late_bounds) = tcx.is_late_bound_map(fn_def_id.expect_local()) {
         for late_bound in late_bounds.iter() {
             let hir_id = HirId { owner: fn_def_id.index, local_id: *late_bound };
             let name = tcx.hir().name(hir_id);

src/librustc_mir/const_eval/fn_queries.rs

@@ -85,7 +85,7 @@ pub fn is_min_const_fn(tcx: TyCtxt<'_>, def_id: DefId) -> bool {
 pub fn is_parent_const_impl_raw(tcx: TyCtxt<'_>, hir_id: hir::HirId) -> bool {
     let parent_id = tcx.hir().get_parent_did(hir_id);
     if !parent_id.is_top_level_module() {
-        is_const_impl_raw(tcx, LocalDefId::from_def_id(parent_id))
+        is_const_impl_raw(tcx, parent_id.expect_local())
     } else {
         false
     }
@@ -171,7 +171,7 @@ fn const_fn_is_allowed_fn_ptr(tcx: TyCtxt<'_>, def_id: DefId) -> bool {
 pub fn provide(providers: &mut Providers<'_>) {
     *providers = Providers {
         is_const_fn_raw,
-        is_const_impl_raw: |tcx, def_id| is_const_impl_raw(tcx, LocalDefId::from_def_id(def_id)),
+        is_const_impl_raw: |tcx, def_id| is_const_impl_raw(tcx, def_id.expect_local()),
         is_promotable_const_fn,
         const_fn_is_allowed_fn_ptr,
         ..*providers

src/librustc_mir_build/hair/cx/expr.rs

@@ -10,7 +10,6 @@ use rustc::ty::subst::{InternalSubsts, SubstsRef};
 use rustc::ty::{self, AdtKind, Ty};
 use rustc_hir as hir;
 use rustc_hir::def::{CtorKind, CtorOf, DefKind, Res};
-use rustc_hir::def_id::LocalDefId;
 use rustc_index::vec::Idx;
 use rustc_span::Span;
 
@@ -812,7 +811,7 @@ fn convert_var<'tcx>(
             let closure_def_id = cx.body_owner;
             let upvar_id = ty::UpvarId {
                 var_path: ty::UpvarPath { hir_id: var_hir_id },
-                closure_expr_id: LocalDefId::from_def_id(closure_def_id),
+                closure_expr_id: closure_def_id.expect_local(),
             };
             let var_ty = cx.tables().node_type(var_hir_id);
 
@@ -987,7 +986,7 @@ fn capture_upvar<'tcx>(
 ) -> ExprRef<'tcx> {
     let upvar_id = ty::UpvarId {
         var_path: ty::UpvarPath { hir_id: var_hir_id },
-        closure_expr_id: cx.tcx.hir().local_def_id(closure_expr.hir_id).to_local(),
+        closure_expr_id: cx.tcx.hir().local_def_id(closure_expr.hir_id).expect_local(),
     };
     let upvar_capture = cx.tables().upvar_capture(upvar_id);
     let temp_lifetime = cx.region_scope_tree.temporary_scope(closure_expr.hir_id.local_id);

src/librustc_span/def_id.rs

@@ -164,8 +164,9 @@ impl DefId {
     }
 
     #[inline]
-    pub fn to_local(self) -> LocalDefId {
-        LocalDefId::from_def_id(self)
+    pub fn expect_local(self) -> LocalDefId {
+        assert!(self.is_local());
+        LocalDefId { local_def_index: self.index }
     }
 
     pub fn is_top_level_module(self) -> bool {
@@ -216,12 +217,6 @@ pub struct LocalDefId {
 }
 
 impl LocalDefId {
-    #[inline]
-    pub fn from_def_id(def_id: DefId) -> LocalDefId {
-        assert!(def_id.is_local());
-        LocalDefId { local_def_index: def_id.index }
-    }
-
     #[inline]
     pub fn to_def_id(self) -> DefId {
         DefId { krate: LOCAL_CRATE, index: self.local_def_index }

src/librustc_typeck/check/upvar.rs

@@ -118,7 +118,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             for (&var_hir_id, _) in upvars.iter() {
                 let upvar_id = ty::UpvarId {
                     var_path: ty::UpvarPath { hir_id: var_hir_id },
-                    closure_expr_id: LocalDefId::from_def_id(closure_def_id),
+                    closure_expr_id: closure_def_id.expect_local(),
                 };
                 debug!("seed upvar_id {:?}", upvar_id);
                 // Adding the upvar Id to the list of Upvars, which will be added
@@ -228,7 +228,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                     let upvar_ty = self.node_ty(var_hir_id);
                     let upvar_id = ty::UpvarId {
                         var_path: ty::UpvarPath { hir_id: var_hir_id },
-                        closure_expr_id: LocalDefId::from_def_id(closure_def_id),
+                        closure_expr_id: closure_def_id.expect_local(),
                     };
                     let capture = self.tables.borrow().upvar_capture(upvar_id);
 

src/librustc_typeck/expr_use_visitor.rs

@@ -519,7 +519,7 @@ impl<'a, 'tcx> ExprUseVisitor<'a, 'tcx> {
             for &var_id in upvars.keys() {
                 let upvar_id = ty::UpvarId {
                     var_path: ty::UpvarPath { hir_id: var_id },
-                    closure_expr_id: closure_def_id.to_local(),
+                    closure_expr_id: closure_def_id.expect_local(),
                 };
                 let upvar_capture = self.mc.tables.upvar_capture(upvar_id);
                 let captured_place = return_if_err!(self.cat_captured_var(

src/librustc_typeck/mem_categorization.rs

@@ -470,7 +470,7 @@ impl<'a, 'tcx> MemCategorizationContext<'a, 'tcx> {
 
         let upvar_id = ty::UpvarId {
             var_path: ty::UpvarPath { hir_id: var_id },
-            closure_expr_id: closure_expr_def_id.to_local(),
+            closure_expr_id: closure_expr_def_id.expect_local(),
         };
         let var_ty = self.node_ty(var_id)?;