1 files changed, 26 insertions, 0 deletions
diff --git a/compiler/rustc_middle/src/metadata.rs b/compiler/rustc_middle/src/metadata.rs
new file mode 100644
index 000000000..c8e78747d
--- /dev/null
+++ b/compiler/rustc_middle/src/metadata.rs
@@ -0,0 +1,26 @@
+use crate::ty;
+
+use rustc_hir::def::Res;
+use rustc_macros::HashStable;
+use rustc_span::symbol::Ident;
+use rustc_span::Span;
+
+/// This structure is supposed to keep enough data to re-create `NameBinding`s for other crates
+/// during name resolution. Right now the bindings are not recreated entirely precisely so we may
+/// need to add more data in the future to correctly support macros 2.0, for example.
+/// Module child can be either a proper item or a reexport (including private imports).
+/// In case of reexport all the fields describe the reexport item itself, not what it refers to.
+#[derive(Copy, Clone, Debug, TyEncodable, TyDecodable, HashStable)]
+pub struct ModChild {
+    /// Name of the item.
+    pub ident: Ident,
+    /// Resolution result corresponding to the item.
+    /// Local variables cannot be exported, so this `Res` doesn't need the ID parameter.
+    pub res: Res<!>,
+    /// Visibility of the item.
+    pub vis: ty::Visibility,
+    /// Span of the item.
+    pub span: Span,
+    /// A proper `macro_rules` item (not a reexport).
+    pub macro_rules: bool,
+}