Move DepKind to rustc_query_system and define it as u16

compiler/rustc_interface/src/callbacks.rs

@@ -10,8 +10,10 @@
 //! origin crate when the `TyCtxt` is not present in TLS.
 
 use rustc_errors::{Diagnostic, TRACK_DIAGNOSTICS};
-use rustc_middle::dep_graph::TaskDepsRef;
+use rustc_middle::dep_graph::{DepNodeExt, TaskDepsRef};
 use rustc_middle::ty::tls;
+use rustc_query_system::dep_graph::dep_node::default_dep_kind_debug;
+use rustc_query_system::dep_graph::{DepContext, DepKind, DepNode};
 use std::fmt;
 
 fn track_span_parent(def_id: rustc_span::def_id::LocalDefId) {
@@ -59,10 +61,49 @@ fn def_id_debug(def_id: rustc_hir::def_id::DefId, f: &mut fmt::Formatter<'_>) ->
     write!(f, ")")
 }
 
+/// This is a callback from `rustc_query_system` as it cannot access the implicit state
+/// in `rustc_middle` otherwise.
+pub fn dep_kind_debug(kind: DepKind, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    tls::with_opt(|opt_tcx| {
+        if let Some(tcx) = opt_tcx {
+            write!(f, "{}", tcx.dep_kind_info(kind).name)
+        } else {
+            default_dep_kind_debug(kind, f)
+        }
+    })
+}
+
+/// This is a callback from `rustc_query_system` as it cannot access the implicit state
+/// in `rustc_middle` otherwise.
+pub fn dep_node_debug(node: DepNode, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    write!(f, "{:?}(", node.kind)?;
+
+    tls::with_opt(|opt_tcx| {
+        if let Some(tcx) = opt_tcx {
+            if let Some(def_id) = node.extract_def_id(tcx) {
+                write!(f, "{}", tcx.def_path_debug_str(def_id))?;
+            } else if let Some(ref s) = tcx.dep_graph.dep_node_debug_str(node) {
+                write!(f, "{s}")?;
+            } else {
+                write!(f, "{}", node.hash)?;
+            }
+        } else {
+            write!(f, "{}", node.hash)?;
+        }
+        Ok(())
+    })?;
+
+    write!(f, ")")
+}
+
 /// Sets up the callbacks in prior crates which we want to refer to the
 /// TyCtxt in.
 pub fn setup_callbacks() {
     rustc_span::SPAN_TRACK.swap(&(track_span_parent as fn(_)));
     rustc_hir::def_id::DEF_ID_DEBUG.swap(&(def_id_debug as fn(_, &mut fmt::Formatter<'_>) -> _));
+    rustc_query_system::dep_graph::dep_node::DEP_KIND_DEBUG
+        .swap(&(dep_kind_debug as fn(_, &mut fmt::Formatter<'_>) -> _));
+    rustc_query_system::dep_graph::dep_node::DEP_NODE_DEBUG
+        .swap(&(dep_node_debug as fn(_, &mut fmt::Formatter<'_>) -> _));
     TRACK_DIAGNOSTICS.swap(&(track_diagnostic as _));
 }