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Handle cross-crate module ExpnIds consistently

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- Always use the ExpnId serialized to `tables`
- Use the Id for traits and enums from other crates in resolution.
This commit is contained in:
Matthew Jasper 2021-10-21 22:06:40 +01:00
parent 547a6ffee0
commit 4ecb49eba3
6 changed files with 13 additions and 12 deletions
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9
compiler/rustc_metadata/src/rmeta/decoder.rs
View File

@ -1219,10 +1219,11 @@ impl<'a, 'tcx> CrateMetadataRef<'a> {
}
fn module_expansion(&self, id: DefIndex, sess: &Session) -> ExpnId {
if let EntryKind::Mod(m) = self.kind(id) {
m.decode((self, sess)).expansion
} else {
panic!("Expected module, found {:?}", self.local_def_id(id))
match self.kind(id) {
EntryKind::Mod(_) | EntryKind::Enum(_) | EntryKind::Trait(_) => {
self.get_expn_that_defined(id, sess)
}
_ => panic!("Expected module, found {:?}", self.local_def_id(id)),
}
}

4
compiler/rustc_metadata/src/rmeta/encoder.rs
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@ -1086,11 +1086,13 @@ impl EncodeContext<'a, 'tcx> {
Lazy::empty()
};
let data = ModData { reexports, expansion: tcx.expn_that_defined(local_def_id) };
let data = ModData { reexports };
record!(self.tables.kind[def_id] <- EntryKind::Mod(self.lazy(data)));
if self.is_proc_macro {
record!(self.tables.children[def_id] <- &[]);
// Encode this here because we don't do it in encode_def_ids.
record!(self.tables.expn_that_defined[def_id] <- tcx.expn_that_defined(local_def_id));
} else {
record!(self.tables.children[def_id] <- md.item_ids.iter().map(|item_id| {
item_id.def_id.local_def_index

1
compiler/rustc_metadata/src/rmeta/mod.rs
View File

@ -367,7 +367,6 @@ struct RenderedConst(String);
#[derive(MetadataEncodable, MetadataDecodable)]
struct ModData {
reexports: Lazy<[Export]>,
expansion: ExpnId,
}
#[derive(MetadataEncodable, MetadataDecodable)]

7
compiler/rustc_resolve/src/build_reduced_graph.rs
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@ -145,12 +145,7 @@ impl<'a> Resolver<'a> {
} else {
def_key.disambiguated_data.data.get_opt_name().expect("module without name")
};
let expn_id = if def_kind == DefKind::Mod {
self.cstore().module_expansion_untracked(def_id, &self.session)
} else {
// FIXME: Parent expansions for enums and traits are not kept in metadata.
ExpnId::root()
};
let expn_id = self.cstore().module_expansion_untracked(def_id, &self.session);
Some(self.new_module(
parent,

2
src/test/ui/proc-macro/meta-macro-hygiene.stdout
View File

@ -49,6 +49,8 @@ crate0::{{expn1}}: parent: crate0::{{expn0}}, call_site_ctxt: #0, def_site_ctxt:
crate0::{{expn2}}: parent: crate0::{{expn0}}, call_site_ctxt: #0, def_site_ctxt: #0, kind: Macro(Bang, "produce_it")
crate0::{{expn3}}: parent: crate0::{{expn2}}, call_site_ctxt: #4, def_site_ctxt: #0, kind: Macro(Bang, "meta_macro::print_def_site")
crate0::{{expn4}}: parent: crate0::{{expn3}}, call_site_ctxt: #5, def_site_ctxt: #0, kind: Macro(Bang, "$crate::dummy")
crate1::{{expnNNN}}: parent: crate0::{{expn0}}, call_site_ctxt: #0, def_site_ctxt: #0, kind: Macro(Attr, "derive")
crate1::{{expnNNN}}: parent: crate0::{{expn0}}, call_site_ctxt: #0, def_site_ctxt: #0, kind: Macro(Attr, "derive")
crate1::{{expnNNN}}: parent: crate0::{{expn0}}, call_site_ctxt: #0, def_site_ctxt: #0, kind: Macro(Bang, "include")
crate2::{{expn1}}: parent: crate0::{{expn0}}, call_site_ctxt: #0, def_site_ctxt: #0, kind: AstPass(StdImports)

2
src/test/ui/proc-macro/nonterminal-token-hygiene.stdout
View File

@ -73,6 +73,8 @@ crate0::{{expn1}}: parent: crate0::{{expn0}}, call_site_ctxt: #0, def_site_ctxt:
crate0::{{expn2}}: parent: crate0::{{expn0}}, call_site_ctxt: #0, def_site_ctxt: #0, kind: Macro(Bang, "outer")
crate0::{{expn3}}: parent: crate0::{{expn2}}, call_site_ctxt: #4, def_site_ctxt: #4, kind: Macro(Bang, "inner")
crate0::{{expn4}}: parent: crate0::{{expn3}}, call_site_ctxt: #6, def_site_ctxt: #0, kind: Macro(Bang, "print_bang")
crate1::{{expnNNN}}: parent: crate0::{{expn0}}, call_site_ctxt: #0, def_site_ctxt: #0, kind: Macro(Attr, "derive")
crate1::{{expnNNN}}: parent: crate0::{{expn0}}, call_site_ctxt: #0, def_site_ctxt: #0, kind: Macro(Attr, "derive")
crate1::{{expnNNN}}: parent: crate0::{{expn0}}, call_site_ctxt: #0, def_site_ctxt: #0, kind: Macro(Bang, "include")
crate2::{{expn1}}: parent: crate0::{{expn0}}, call_site_ctxt: #0, def_site_ctxt: #0, kind: AstPass(StdImports)