HirIdification: remove all NodeIds from typeck

src/librustc_typeck/check/method/mod.rs

@@ -196,7 +196,7 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
         )?;
 
         if let Some(import_id) = pick.import_id {
-            let import_def_id = self.tcx.hir().local_def_id(import_id);
+            let import_def_id = self.tcx.hir().local_def_id_from_hir_id(import_id);
             debug!("used_trait_import: {:?}", import_def_id);
             Lrc::get_mut(&mut self.tables.borrow_mut().used_trait_imports)
                 .unwrap().insert(import_def_id);
@@ -428,7 +428,7 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
                                        self_ty, expr_id, ProbeScope::TraitsInScope)?;
         debug!("resolve_ufcs: pick={:?}", pick);
         if let Some(import_id) = pick.import_id {
-            let import_def_id = tcx.hir().local_def_id(import_id);
+            let import_def_id = tcx.hir().local_def_id_from_hir_id(import_id);
             debug!("resolve_ufcs: used_trait_import: {:?}", import_def_id);
             Lrc::get_mut(&mut self.tables.borrow_mut().used_trait_imports)
                 .unwrap().insert(import_def_id);

src/librustc_typeck/check/method/probe.rs

@@ -120,7 +120,7 @@ struct Candidate<'tcx> {
     xform_ret_ty: Option<Ty<'tcx>>,
     item: ty::AssociatedItem,
     kind: CandidateKind<'tcx>,
-    import_id: Option<ast::NodeId>,
+    import_id: Option<hir::HirId>,
 }
 
 #[derive(Debug)]
@@ -145,7 +145,7 @@ enum ProbeResult {
 pub struct Pick<'tcx> {
     pub item: ty::AssociatedItem,
     pub kind: PickKind<'tcx>,
-    pub import_id: Option<ast::NodeId>,
+    pub import_id: Option<hir::HirId>,
 
     // Indicates that the source expression should be autoderef'd N times
     //
@@ -836,7 +836,8 @@ impl<'a, 'gcx, 'tcx> ProbeContext<'a, 'gcx, 'tcx> {
             for trait_candidate in applicable_traits.iter() {
                 let trait_did = trait_candidate.def_id;
                 if duplicates.insert(trait_did) {
-                    let import_id = trait_candidate.import_id;
+                    let import_id = trait_candidate.import_id.map(|node_id|
+                        self.fcx.tcx.hir().node_to_hir_id(node_id));
                     let result = self.assemble_extension_candidates_for_trait(import_id, trait_did);
                     result?;
                 }
@@ -887,7 +888,7 @@ impl<'a, 'gcx, 'tcx> ProbeContext<'a, 'gcx, 'tcx> {
     }
 
     fn assemble_extension_candidates_for_trait(&mut self,
-                                               import_id: Option<ast::NodeId>,
+                                               import_id: Option<hir::HirId>,
                                                trait_def_id: DefId)
                                                -> Result<(), MethodError<'tcx>> {
         debug!("assemble_extension_candidates_for_trait(trait_def_id={:?})",

src/librustc_typeck/check/mod.rs

@@ -4966,10 +4966,9 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
                     // that highlight errors inline.
                     let mut sp = blk.span;
                     let mut fn_span = None;
-                    let blk_node_id = self.tcx.hir().hir_to_node_id(blk.hir_id);
-                    if let Some((decl, ident)) = self.get_parent_fn_decl(blk_node_id) {
+                    if let Some((decl, ident)) = self.get_parent_fn_decl(blk.hir_id) {
                         let ret_sp = decl.output.span();
-                        if let Some(block_sp) = self.parent_item_span(blk_node_id) {
+                        if let Some(block_sp) = self.parent_item_span(blk.hir_id) {
                             // HACK: on some cases (`ui/liveness/liveness-issue-2163.rs`) the
                             // output would otherwise be incorrect and even misleading. Make sure
                             // the span we're aiming at correspond to a `fn` body.
@@ -5009,8 +5008,8 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
         ty
     }
 
-    fn parent_item_span(&self, id: ast::NodeId) -> Option<Span> {
-        let node = self.tcx.hir().get(self.tcx.hir().get_parent(id));
+    fn parent_item_span(&self, id: hir::HirId) -> Option<Span> {
+        let node = self.tcx.hir().get_by_hir_id(self.tcx.hir().get_parent_item(id));
         match node {
             Node::Item(&hir::Item {
                 node: hir::ItemKind::Fn(_, _, _, body_id), ..
@@ -5028,9 +5027,9 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
         None
     }
 
-    /// Given a function block's `NodeId`, returns its `FnDecl` if it exists, or `None` otherwise.
-    fn get_parent_fn_decl(&self, blk_id: ast::NodeId) -> Option<(hir::FnDecl, ast::Ident)> {
-        let parent = self.tcx.hir().get(self.tcx.hir().get_parent(blk_id));
+    /// Given a function block's `HirId`, returns its `FnDecl` if it exists, or `None` otherwise.
+    fn get_parent_fn_decl(&self, blk_id: hir::HirId) -> Option<(hir::FnDecl, ast::Ident)> {
+        let parent = self.tcx.hir().get_by_hir_id(self.tcx.hir().get_parent_item(blk_id));
         self.get_node_fn_decl(parent).map(|(fn_decl, ident, _)| (fn_decl, ident))
     }
 

src/librustc_typeck/check/writeback.rs

@@ -15,7 +15,6 @@ use rustc::ty::{self, Ty, TyCtxt};
 use rustc::util::nodemap::DefIdSet;
 use rustc_data_structures::sync::Lrc;
 use std::mem;
-use syntax::ast;
 use syntax_pos::Span;
 
 ///////////////////////////////////////////////////////////////////////////
@@ -444,8 +443,8 @@ impl<'cx, 'gcx, 'tcx> WritebackCx<'cx, 'gcx, 'tcx> {
 
     fn visit_opaque_types(&mut self, span: Span) {
         for (&def_id, opaque_defn) in self.fcx.opaque_types.borrow().iter() {
-            let node_id = self.tcx().hir().as_local_node_id(def_id).unwrap();
-            let instantiated_ty = self.resolve(&opaque_defn.concrete_ty, &node_id);
+            let hir_id = self.tcx().hir().as_local_hir_id(def_id).unwrap();
+            let instantiated_ty = self.resolve(&opaque_defn.concrete_ty, &hir_id);
 
             let generics = self.tcx().generics_of(def_id);
 
@@ -731,12 +730,6 @@ impl Locatable for Span {
     }
 }
 
-impl Locatable for ast::NodeId {
-    fn to_span(&self, tcx: &TyCtxt<'_, '_, '_>) -> Span {
-        tcx.hir().span(*self)
-    }
-}
-
 impl Locatable for DefIndex {
     fn to_span(&self, tcx: &TyCtxt<'_, '_, '_>) -> Span {
         let hir_id = tcx.hir().def_index_to_hir_id(*self);