================
@@ -222,6 +230,41 @@ struct ModuleAttributes {
NoUndeclaredIncludes(false) {}
};
+/// A reference to either a fully materialized Module object, or
+/// a yet-to-be-deserialized submodule in an AST file.
+class ModuleRef {
+ mutable Module *Existing = nullptr;
+ mutable ExternalSubmoduleSource *ExternalSource = nullptr;
----------------
jansvoboda11 wrote:
I don't this so, because I want `ModuleRef` to represent either the
materialized `Module *`, or the external submodule in `ASTReader`, or _both_.
This will become useful in a later patch, where even if a `Module *` gets
deserialized/materialized from an AST file, the `ExternalSubmoduleSource` is
still able to give me some information for `SubmoduleID` more efficiently than
the `Module *` object can. (More specifically - get me the set of _exported_
`ModuleRef`s without fully deserializing imports, submodules, etc. that `Module
*` would trigger.)
https://github.com/llvm/llvm-project/pull/194968
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