rustc: async fn drop order lowering in HIR

[rust.git] / src / librustc / hir / map / mod.rs

diff --git a/src/librustc/hir/map/mod.rs b/src/librustc/hir/map/mod.rs
index fd42c6f469e1eec2bb91f70e64f6b8dc1d6be44e..2d3de5af9927fe76786ce01b712be051a5135771 100644 (file)
--- a/src/librustc/hir/map/mod.rs
+++ b/src/librustc/hir/map/mod.rs
@@ -26,7 +26,7 @@
 
 use std::io;
 use std::result::Result::Err;
-use crate::ty::TyCtxt;
+use crate::ty::query::Providers;
 
 pub mod blocks;
 mod collector;
@@ -628,10 +628,6 @@ pub fn get_generics(&self, id: DefId) -> Option<&'hir Generics> {
         })
     }
 
-    pub fn get_generics_span(&self, id: DefId) -> Option<Span> {
-        self.get_generics(id).map(|generics| generics.span).filter(|sp| *sp != DUMMY_SP)
-    }
-
     /// Retrieves the `Node` corresponding to `id`, returning `None` if cannot be found.
     pub fn find(&self, id: NodeId) -> Option<Node<'hir>> {
         let hir_id = self.node_to_hir_id(id);
@@ -703,6 +699,19 @@ pub fn is_argument(&self, id: NodeId) -> bool {
         }
     }
 
+    /// Returns the `HirId` of this pattern, or, if this is an `async fn` desugaring, the `HirId`
+    /// of the original pattern that the user wrote.
+    pub fn original_pat_of_argument(&self, arg: &'hir Arg) -> &'hir Pat {
+        match &arg.source {
+            ArgSource::Normal => &*arg.pat,
+            ArgSource::AsyncFn(hir_id) => match self.find_by_hir_id(*hir_id) {
+                Some(Node::Pat(pat)) | Some(Node::Binding(pat)) => &pat,
+                Some(Node::Local(local)) => &*local.pat,
+                x => bug!("ArgSource::AsyncFn HirId not a pattern/binding/local: {:?}", x),
+            },
+        }
+    }
+
     pub fn is_const_scope(&self, hir_id: HirId) -> bool {
         self.walk_parent_nodes(hir_id, |node| match *node {
             Node::Item(Item { node: ItemKind::Const(_, _), .. }) => true,
@@ -1450,11 +1459,13 @@ fn hir_id_to_string(map: &Map<'_>, id: HirId, include_id: bool) -> String {
     }
 }
 
-pub fn def_kind(tcx: TyCtxt<'_, '_, '_>, def_id: DefId) -> Option<DefKind> {
-    if let Some(node_id) = tcx.hir().as_local_node_id(def_id) {
-        tcx.hir().def_kind(node_id)
-    } else {
-        bug!("Calling local def_kind query provider for upstream DefId: {:?}",
-             def_id)
-    }
+pub fn provide(providers: &mut Providers<'_>) {
+    providers.def_kind = |tcx, def_id| {
+        if let Some(node_id) = tcx.hir().as_local_node_id(def_id) {
+            tcx.hir().def_kind(node_id)
+        } else {
+            bug!("Calling local def_kind query provider for upstream DefId: {:?}",
+                def_id)
+        }
+    };
 }