Rollup merge of rust-lang#58137 - ljedrz:cleanup_node_id_to_type, r=estebank

Cleanup: rename node_id_to_type(_opt)

Renames `node_id_to_type(_opt)` to `hir_id_to_type(_opt)`; this makes it clear we are dealing with HIR nodes and their IDs here.

In addition, a drive-by commit removing `ty::item_path::hir_path_str` (as requested by @eddyb).

Author: Centril

src/librustc/infer/error_reporting/need_type_info.rs

@@ -16,9 +16,9 @@ struct FindLocalByTypeVisitor<'a, 'gcx: 'a + 'tcx, 'tcx: 'a> {
 }
 
 impl<'a, 'gcx, 'tcx> FindLocalByTypeVisitor<'a, 'gcx, 'tcx> {
-    fn node_matches_type(&mut self, node_id: HirId) -> bool {
+    fn node_matches_type(&mut self, hir_id: HirId) -> bool {
         let ty_opt = self.infcx.in_progress_tables.and_then(|tables| {
-            tables.borrow().node_id_to_type_opt(node_id)
+            tables.borrow().node_type_opt(hir_id)
         });
         match ty_opt {
             Some(ty) => {

src/librustc/infer/error_reporting/nice_region_error/util.rs

@@ -64,7 +64,7 @@ impl<'a, 'gcx, 'tcx> NiceRegionError<'a, 'gcx, 'tcx> {
                             // May return None; sometimes the tables are not yet populated.
                             let ty_hir_id = fn_decl.inputs[index].hir_id;
                             let arg_ty_span = hir.span(hir.hir_to_node_id(ty_hir_id));
-                            let ty = tables.node_id_to_type_opt(arg.hir_id)?;
+                            let ty = tables.node_type_opt(arg.hir_id)?;
                             let mut found_anon_region = false;
                             let new_arg_ty = self.tcx().fold_regions(&ty, &mut false, |r, _| {
                                 if *r == *anon_region {

src/librustc/middle/dead.rs

@@ -112,7 +112,7 @@ impl<'a, 'tcx> MarkSymbolVisitor<'a, 'tcx> {
 
     fn handle_field_pattern_match(&mut self, lhs: &hir::Pat, def: Def,
                                   pats: &[source_map::Spanned<hir::FieldPat>]) {
-        let variant = match self.tables.node_id_to_type(lhs.hir_id).sty {
+        let variant = match self.tables.node_type(lhs.hir_id).sty {
             ty::Adt(adt, _) => adt.variant_of_def(def),
             _ => span_bug!(lhs.span, "non-ADT in struct pattern")
         };

src/librustc/middle/intrinsicck.rs

@@ -165,7 +165,7 @@ impl<'a, 'tcx> Visitor<'tcx> for ExprVisitor<'a, 'tcx> {
         };
         if let Def::Fn(did) = def {
             if self.def_id_is_transmute(did) {
-                let typ = self.tables.node_id_to_type(expr.hir_id);
+                let typ = self.tables.node_type(expr.hir_id);
                 let sig = typ.fn_sig(self.tcx);
                 let from = sig.inputs().skip_binder()[0];
                 let to = *sig.output().skip_binder();

src/librustc/middle/mem_categorization.rs

@@ -174,7 +174,7 @@ pub enum Note {
 // which the value is stored.
 //
 // *WARNING* The field `cmt.type` is NOT necessarily the same as the
-// result of `node_id_to_type(cmt.id)`.
+// result of `node_type(cmt.id)`.
 //
 // (FIXME: rewrite the following comment given that `@x` managed
 // pointers have been obsolete for quite some time.)
@@ -497,7 +497,7 @@ impl<'a, 'gcx, 'tcx> MemCategorizationContext<'a, 'gcx, 'tcx> {
                    hir_id: hir::HirId)
                    -> McResult<Ty<'tcx>> {
         self.resolve_type_vars_or_error(hir_id,
-                                        self.tables.node_id_to_type_opt(hir_id))
+                                        self.tables.node_type_opt(hir_id))
     }
 
     pub fn expr_ty(&self, expr: &hir::Expr) -> McResult<Ty<'tcx>> {

src/librustc/ty/context.rs

@@ -525,17 +525,14 @@ impl<'tcx> TypeckTables<'tcx> {
         }
     }
 
-    pub fn node_id_to_type(&self, id: hir::HirId) -> Ty<'tcx> {
-        self.node_id_to_type_opt(id).unwrap_or_else(||
-            bug!("node_id_to_type: no type for node `{}`",
-                 tls::with(|tcx| {
-                     let id = tcx.hir().hir_to_node_id(id);
-                     tcx.hir().node_to_string(id)
-                 }))
+    pub fn node_type(&self, id: hir::HirId) -> Ty<'tcx> {
+        self.node_type_opt(id).unwrap_or_else(||
+            bug!("node_type: no type for node `{}`",
+                 tls::with(|tcx| tcx.hir().hir_to_string(id)))
         )
     }
 
-    pub fn node_id_to_type_opt(&self, id: hir::HirId) -> Option<Ty<'tcx>> {
+    pub fn node_type_opt(&self, id: hir::HirId) -> Option<Ty<'tcx>> {
         validate_hir_id_for_typeck_tables(self.local_id_root, id, false);
         self.node_types.get(&id.local_id).cloned()
     }
@@ -560,11 +557,11 @@ impl<'tcx> TypeckTables<'tcx> {
     // Returns the type of a pattern as a monotype. Like @expr_ty, this function
     // doesn't provide type parameter substitutions.
     pub fn pat_ty(&self, pat: &hir::Pat) -> Ty<'tcx> {
-        self.node_id_to_type(pat.hir_id)
+        self.node_type(pat.hir_id)
     }
 
     pub fn pat_ty_opt(&self, pat: &hir::Pat) -> Option<Ty<'tcx>> {
-        self.node_id_to_type_opt(pat.hir_id)
+        self.node_type_opt(pat.hir_id)
     }
 
     // Returns the type of an expression as a monotype.
@@ -578,11 +575,11 @@ impl<'tcx> TypeckTables<'tcx> {
     // ask for the type of "id" in "id(3)", it will return "fn(&isize) -> isize"
     // instead of "fn(ty) -> T with T = isize".
     pub fn expr_ty(&self, expr: &hir::Expr) -> Ty<'tcx> {
-        self.node_id_to_type(expr.hir_id)
+        self.node_type(expr.hir_id)
     }
 
     pub fn expr_ty_opt(&self, expr: &hir::Expr) -> Option<Ty<'tcx>> {
-        self.node_id_to_type_opt(expr.hir_id)
+        self.node_type_opt(expr.hir_id)
     }
 
     pub fn adjustments(&self) -> LocalTableInContext<'_, Vec<ty::adjustment::Adjustment<'tcx>>> {

src/librustc/ty/item_path.rs

@@ -1,4 +1,3 @@
-use crate::hir;
 use crate::hir::map::DefPathData;
 use crate::hir::def_id::{CrateNum, DefId, CRATE_DEF_INDEX, LOCAL_CRATE};
 use crate::ty::{self, DefIdTree, Ty, TyCtxt};
@@ -77,11 +76,6 @@ impl<'a, 'gcx, 'tcx> TyCtxt<'a, 'gcx, 'tcx> {
         self.item_path_str(self.hir().local_def_id(id))
     }
 
-    // FIXME(@ljedrz): replace the NodeId variant
-    pub fn hir_path_str(self, id: hir::HirId) -> String {
-        self.item_path_str(self.hir().local_def_id_from_hir_id(id))
-    }
-
     /// Returns a string identifying this def-id. This string is
     /// suitable for user output. It always begins with a crate identifier.
     pub fn absolute_item_path_str(self, def_id: DefId) -> String {

src/librustc_borrowck/borrowck/gather_loans/mod.rs

@@ -149,7 +149,7 @@ impl<'a, 'tcx> euv::Delegate<'tcx> for GatherLoanCtxt<'a, 'tcx> {
     fn decl_without_init(&mut self, id: ast::NodeId, _span: Span) {
         let ty = self.bccx
                      .tables
-                     .node_id_to_type(self.bccx.tcx.hir().node_to_hir_id(id));
+                     .node_type(self.bccx.tcx.hir().node_to_hir_id(id));
         gather_moves::gather_decl(self.bccx, &self.move_data, id, ty);
     }
 }

src/librustc_lint/builtin.rs

@@ -158,7 +158,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for BoxPointers {
     }
 
     fn check_expr(&mut self, cx: &LateContext<'_, '_>, e: &hir::Expr) {
-        let ty = cx.tables.node_id_to_type(e.hir_id);
+        let ty = cx.tables.node_type(e.hir_id);
         self.check_heap_type(cx, e.span, ty);
     }
 }
@@ -1002,7 +1002,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for MutableTransmutes {
                 if !def_id_is_transmute(cx, did) {
                     return None;
                 }
-                let sig = cx.tables.node_id_to_type(expr.hir_id).fn_sig(cx.tcx);
+                let sig = cx.tables.node_type(expr.hir_id).fn_sig(cx.tcx);
                 let from = sig.inputs().skip_binder()[0];
                 let to = *sig.output().skip_binder();
                 return Some((&from.sty, &to.sty));

src/librustc_lint/types.rs

@@ -85,7 +85,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for TypeLimits {
                 }
             }
             hir::ExprKind::Lit(ref lit) => {
-                match cx.tables.node_id_to_type(e.hir_id).sty {
+                match cx.tables.node_type(e.hir_id).sty {
                     ty::Int(t) => {
                         match lit.node {
                             ast::LitKind::Int(v, ast::LitIntType::Signed(_)) |
@@ -257,7 +257,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for TypeLimits {
             // Normalize the binop so that the literal is always on the RHS in
             // the comparison
             let norm_binop = if swap { rev_binop(binop) } else { binop };
-            match cx.tables.node_id_to_type(expr.hir_id).sty {
+            match cx.tables.node_type(expr.hir_id).sty {
                 ty::Int(int_ty) => {
                     let (min, max) = int_ty_range(int_ty);
                     let lit_val: i128 = match lit.node {
@@ -400,7 +400,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for TypeLimits {
                 repr_str, val, t, actually, t
             ));
             if let Some(sugg_ty) =
-                get_type_suggestion(&cx.tables.node_id_to_type(expr.hir_id).sty, val, negative)
+                get_type_suggestion(&cx.tables.node_type(expr.hir_id).sty, val, negative)
             {
                 if let Some(pos) = repr_str.chars().position(|c| c == 'i' || c == 'u') {
                     let (sans_suffix, _) = repr_str.split_at(pos);

src/librustc_metadata/encoder.rs

@@ -1338,7 +1338,7 @@ impl<'a, 'b: 'a, 'tcx: 'b> IsolatedEncoder<'a, 'b, 'tcx> {
         let tables = self.tcx.typeck_tables_of(def_id);
         let node_id = self.tcx.hir().as_local_node_id(def_id).unwrap();
         let hir_id = self.tcx.hir().node_to_hir_id(node_id);
-        let kind = match tables.node_id_to_type(hir_id).sty {
+        let kind = match tables.node_type(hir_id).sty {
             ty::Generator(def_id, ..) => {
                 let layout = self.tcx.generator_layout(def_id);
                 let data = GeneratorData {

src/librustc_mir/borrow_check/error_reporting.rs

@@ -1178,7 +1178,7 @@ impl<'cx, 'gcx, 'tcx> MirBorrowckCtxt<'cx, 'gcx, 'tcx> {
         let escapes_from = if tcx.is_closure(self.mir_def_id) {
             let tables = tcx.typeck_tables_of(self.mir_def_id);
             let mir_hir_id = tcx.hir().def_index_to_hir_id(self.mir_def_id.index);
-            match tables.node_id_to_type(mir_hir_id).sty {
+            match tables.node_type(mir_hir_id).sty {
                 ty::Closure(..) => "closure",
                 ty::Generator(..) => "generator",
                 _ => bug!("Closure body doesn't have a closure or generator type"),

src/librustc_mir/borrow_check/nll/universal_regions.rs

@@ -482,7 +482,7 @@ impl<'cx, 'gcx, 'tcx> UniversalRegionsBuilder<'cx, 'gcx, 'tcx> {
                     tcx.type_of(closure_base_def_id)
                 } else {
                     let tables = tcx.typeck_tables_of(self.mir_def_id);
-                    tables.node_id_to_type(self.mir_hir_id)
+                    tables.node_type(self.mir_hir_id)
                 };
 
                 debug!("defining_ty (pre-replacement): {:?}", defining_ty);

src/librustc_mir/build/mod.rs

@@ -92,7 +92,7 @@ pub fn mir_build<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>, def_id: DefId) -> Mir<'t
                     Some(ArgInfo(liberated_closure_env_ty(tcx, id, body_id), None, None, None))
                 }
                 ty::Generator(..) => {
-                    let gen_ty = tcx.body_tables(body_id).node_id_to_type(fn_hir_id);
+                    let gen_ty = tcx.body_tables(body_id).node_type(fn_hir_id);
                     Some(ArgInfo(gen_ty, None, None, None))
                 }
                 _ => None,
@@ -263,7 +263,7 @@ fn liberated_closure_env_ty<'a, 'gcx, 'tcx>(tcx: TyCtxt<'a, 'gcx, 'tcx>,
                                             body_id: hir::BodyId)
                                             -> Ty<'tcx> {
     let closure_expr_hir_id = tcx.hir().node_to_hir_id(closure_expr_id);
-    let closure_ty = tcx.body_tables(body_id).node_id_to_type(closure_expr_hir_id);
+    let closure_ty = tcx.body_tables(body_id).node_type(closure_expr_hir_id);
 
     let (closure_def_id, closure_substs) = match closure_ty.sty {
         ty::Closure(closure_def_id, closure_substs) => (closure_def_id, closure_substs),

src/librustc_mir/hair/cx/block.rs

@@ -115,7 +115,7 @@ fn mirror_stmts<'a, 'gcx, 'tcx>(cx: &mut Cx<'a, 'gcx, 'tcx>,
 pub fn to_expr_ref<'a, 'gcx, 'tcx>(cx: &mut Cx<'a, 'gcx, 'tcx>,
                                    block: &'tcx hir::Block)
                                    -> ExprRef<'tcx> {
-    let block_ty = cx.tables().node_id_to_type(block.hir_id);
+    let block_ty = cx.tables().node_type(block.hir_id);
     let temp_lifetime = cx.region_scope_tree.temporary_scope(block.hir_id.local_id);
     let expr = Expr {
         ty: block_ty,

src/librustc_mir/hair/cx/expr.rs

@@ -304,7 +304,7 @@ fn make_mirror_unadjusted<'a, 'gcx, 'tcx>(cx: &mut Cx<'a, 'gcx, 'tcx>,
                     }
                 } else {
                     ExprKind::Call {
-                        ty: cx.tables().node_id_to_type(fun.hir_id),
+                        ty: cx.tables().node_type(fun.hir_id),
                         fun: fun.to_ref(),
                         args: args.to_ref(),
                         from_hir_call: true,
@@ -677,7 +677,7 @@ fn make_mirror_unadjusted<'a, 'gcx, 'tcx>(cx: &mut Cx<'a, 'gcx, 'tcx>,
                     let def = cx.tables().qpath_def(qpath, source.hir_id);
                     cx
                         .tables()
-                        .node_id_to_type(source.hir_id)
+                        .node_type(source.hir_id)
                         .ty_adt_def()
                         .and_then(|adt_def| {
                         match def {
@@ -919,7 +919,7 @@ fn convert_path_expr<'a, 'gcx, 'tcx>(cx: &mut Cx<'a, 'gcx, 'tcx>,
             debug!("convert_path_expr: user_ty={:?}", user_ty);
             ExprKind::Literal {
                 literal: cx.tcx.mk_lazy_const(ty::LazyConst::Evaluated(ty::Const::zero_sized(
-                    cx.tables().node_id_to_type(expr.hir_id),
+                    cx.tables().node_type(expr.hir_id),
                 ))),
                 user_ty,
             }
@@ -940,7 +940,7 @@ fn convert_path_expr<'a, 'gcx, 'tcx>(cx: &mut Cx<'a, 'gcx, 'tcx>,
             let user_provided_types = cx.tables.user_provided_types();
             let user_provided_type = user_provided_types.get(expr.hir_id).map(|u_ty| *u_ty);
             debug!("convert_path_expr: user_provided_type={:?}", user_provided_type);
-            match cx.tables().node_id_to_type(expr.hir_id).sty {
+            match cx.tables().node_type(expr.hir_id).sty {
                 // A unit struct/variant which is used as a value.
                 // We return a completely different ExprKind here to account for this special case.
                 ty::Adt(adt_def, substs) => {
@@ -980,11 +980,11 @@ fn convert_var<'a, 'gcx, 'tcx>(cx: &mut Cx<'a, 'gcx, 'tcx>,
                    index,
                    closure_expr_id);
             let var_hir_id = cx.tcx.hir().node_to_hir_id(var_id);
-            let var_ty = cx.tables().node_id_to_type(var_hir_id);
+            let var_ty = cx.tables().node_type(var_hir_id);
 
             // FIXME free regions in closures are not right
             let closure_ty = cx.tables()
-                               .node_id_to_type(cx.tcx.hir().node_to_hir_id(closure_expr_id));
+                               .node_type(cx.tcx.hir().node_to_hir_id(closure_expr_id));
 
             // FIXME we're just hard-coding the idea that the
             // signature will be &self or &mut self and hence will
@@ -1188,7 +1188,7 @@ fn capture_freevar<'a, 'gcx, 'tcx>(cx: &mut Cx<'a, 'gcx, 'tcx>,
     };
     let upvar_capture = cx.tables().upvar_capture(upvar_id);
     let temp_lifetime = cx.region_scope_tree.temporary_scope(closure_expr.hir_id.local_id);
-    let var_ty = cx.tables().node_id_to_type(var_hir_id);
+    let var_ty = cx.tables().node_type(var_hir_id);
     let captured_var = Expr {
         temp_lifetime,
         ty: var_ty,

src/librustc_mir/hair/pattern/check_match.rs

@@ -202,7 +202,7 @@ impl<'a, 'tcx> MatchVisitor<'a, 'tcx> {
 
             // Then, if the match has no arms, check whether the scrutinee
             // is uninhabited.
-            let pat_ty = self.tables.node_id_to_type(scrut.hir_id);
+            let pat_ty = self.tables.node_type(scrut.hir_id);
             let module = self.tcx.hir().get_module_parent(scrut.id);
             if inlined_arms.is_empty() {
                 let scrutinee_is_uninhabited = if self.tcx.features().exhaustive_patterns {
@@ -235,7 +235,7 @@ impl<'a, 'tcx> MatchVisitor<'a, 'tcx> {
                 .flat_map(|arm| &arm.0)
                 .map(|pat| smallvec![pat.0])
                 .collect();
-            let scrut_ty = self.tables.node_id_to_type(scrut.hir_id);
+            let scrut_ty = self.tables.node_type(scrut.hir_id);
             check_exhaustive(cx, scrut_ty, scrut.span, &matrix);
         })
     }
@@ -507,7 +507,7 @@ fn check_legality_of_move_bindings(cx: &MatchVisitor<'_, '_>,
                 if let Some(&bm) = cx.tables.pat_binding_modes().get(p.hir_id) {
                     match bm {
                         ty::BindByValue(..) => {
-                            let pat_ty = cx.tables.node_id_to_type(p.hir_id);
+                            let pat_ty = cx.tables.node_type(p.hir_id);
                             if !pat_ty.is_copy_modulo_regions(cx.tcx, cx.param_env, pat.span) {
                                 check_move(p, sub.as_ref().map(|p| &**p), span_vec);
                             }

src/librustc_mir/hair/pattern/mod.rs

@@ -408,7 +408,7 @@ impl<'a, 'tcx> PatternContext<'a, 'tcx> {
     }
 
     fn lower_pattern_unadjusted(&mut self, pat: &'tcx hir::Pat) -> Pattern<'tcx> {
-        let mut ty = self.tables.node_id_to_type(pat.hir_id);
+        let mut ty = self.tables.node_type(pat.hir_id);
 
         let kind = match pat.node {
             PatKind::Wild => PatternKind::Wild,
@@ -541,7 +541,7 @@ impl<'a, 'tcx> PatternContext<'a, 'tcx> {
             }
 
             PatKind::Binding(_, id, _, ident, ref sub) => {
-                let var_ty = self.tables.node_id_to_type(pat.hir_id);
+                let var_ty = self.tables.node_type(pat.hir_id);
                 if let ty::Error = var_ty.sty {
                     // Avoid ICE
                     return Pattern { span: pat.span, ty, kind: Box::new(PatternKind::Wild) };
@@ -775,7 +775,7 @@ impl<'a, 'tcx> PatternContext<'a, 'tcx> {
                   id: hir::HirId,
                   span: Span)
                   -> Pattern<'tcx> {
-        let ty = self.tables.node_id_to_type(id);
+        let ty = self.tables.node_type(id);
         let def = self.tables.qpath_def(qpath, id);
         let is_associated_const = match def {
             Def::AssociatedConst(_) => true,

src/librustc_mir/hair/util.rs

@@ -16,7 +16,7 @@ crate trait UserAnnotatedTyHelpers<'gcx: 'tcx, 'tcx> {
         let user_provided_types = self.tables().user_provided_types();
         let mut user_ty = *user_provided_types.get(hir_id)?;
         debug!("user_subts_applied_to_ty_of_hir_id: user_ty={:?}", user_ty);
-        match &self.tables().node_id_to_type(hir_id).sty {
+        match &self.tables().node_type(hir_id).sty {
             ty::Adt(adt_def, ..) => {
                 if let UserType::TypeOf(ref mut did, _) = &mut user_ty.value {
                     *did = adt_def.did;

src/librustc_passes/rvalue_promotion.rs

@@ -244,7 +244,7 @@ impl<'a, 'tcx> CheckCrateVisitor<'a, 'tcx> {
     }
 
     fn check_expr(&mut self, ex: &'tcx hir::Expr) -> Promotability {
-        let node_ty = self.tables.node_id_to_type(ex.hir_id);
+        let node_ty = self.tables.node_type(ex.hir_id);
         let mut outer = check_expr_kind(self, ex, node_ty);
         outer &= check_adjustments(self, ex);
 
@@ -306,7 +306,7 @@ fn check_expr_kind<'a, 'tcx>(
             if v.tables.is_method_call(e) {
                 return NotPromotable;
             }
-            match v.tables.node_id_to_type(lhs.hir_id).sty {
+            match v.tables.node_type(lhs.hir_id).sty {
                 ty::RawPtr(_) | ty::FnPtr(..) => {
                     assert!(op.node == hir::BinOpKind::Eq || op.node == hir::BinOpKind::Ne ||
                             op.node == hir::BinOpKind::Le || op.node == hir::BinOpKind::Lt ||

src/librustc_privacy/lib.rs

@@ -933,7 +933,7 @@ impl<'a, 'tcx> TypePrivacyVisitor<'a, 'tcx> {
     // Take node-id of an expression or pattern and check its type for privacy.
     fn check_expr_pat_type(&mut self, id: hir::HirId, span: Span) -> bool {
         self.span = span;
-        if self.visit(self.tables.node_id_to_type(id)) || self.visit(self.tables.node_substs(id)) {
+        if self.visit(self.tables.node_type(id)) || self.visit(self.tables.node_substs(id)) {
             return true;
         }
         if let Some(adjustments) = self.tables.adjustments().get(id) {
@@ -980,7 +980,7 @@ impl<'a, 'tcx> Visitor<'tcx> for TypePrivacyVisitor<'a, 'tcx> {
         self.span = hir_ty.span;
         if self.in_body {
             // Types in bodies.
-            if self.visit(self.tables.node_id_to_type(hir_ty.hir_id)) {
+            if self.visit(self.tables.node_type(hir_ty.hir_id)) {
                 return;
             }
         } else {