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Handle instantiating an imported class/vtable (#7792)

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Usual LoadImportRef, plus some generalization of importing entities.
This commit is contained in:
David Blaikie
2026-09-17 23:50:28 +00:00
committed by GitHub
parent 994bad5143
commit 094742740a
4 changed files with 48 additions and 22 deletions
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toolchain/check/cpp/import.cpp
+6 -21
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@@ -362,28 +362,13 @@ auto ImportCppConstantFromFile(Context& context, SemIR::LocId loc_id,
return SemIR::ErrorInst::ConstantId;
}
auto const_inst_id = file.constant_values().GetConstantInstId(inst_id);
CARBON_KIND_SWITCH(file.insts().Get(const_inst_id)) {
case CARBON_KIND(SemIR::ClassType class_type): {
const auto& class_info = file.classes().Get(class_type.class_id);
CARBON_CHECK(class_info.scope_id.has_value());
return ImportCppDeclFromFile(
context, loc_id, file,
file.name_scopes().Get(class_info.scope_id).clang_decl_context_id());
}
case CARBON_KIND(SemIR::Namespace namespace_decl): {
return ImportCppDeclFromFile(context, loc_id, file,
file.name_scopes()
.Get(namespace_decl.name_scope_id)
.clang_decl_context_id());
}
default: {
context.TODO(loc_id, "indirect import of unsupported C++ declaration");
return SemIR::ErrorInst::ConstantId;
}
if (const auto* clang_decl = file.clang_decls().Lookup(inst_id)) {
auto clang_decl_id = file.clang_decls().LookupId(clang_decl->key);
return ImportCppDeclFromFile(context, loc_id, file, clang_decl_id);
}
context.TODO(loc_id, "indirect import of unsupported C++ declaration");
return SemIR::ErrorInst::ConstantId;
}
// Returns the Clang `DeclContext` for the given name scope. Return the