[Modules] Add Darwin-specific compatibility module map parsing hacks
This preserves backwards compatibility for two hacks in the Darwin
system module map files:
1. The use of 'requires excluded' to make headers non-modular, which
should really be mapped to 'textual' now that we have this feature.
2. Silently removes a bogus cplusplus requirement from IOKit.avc.
Once we start diagnosing missing requirements and headers on
auto-imports these would have broken compatibility with existing Darwin
SDKs.
llvm-svn: 244912
diff --git a/clang/lib/Basic/Module.cpp b/clang/lib/Basic/Module.cpp
index 4314b41..4188cef 100644
--- a/clang/lib/Basic/Module.cpp
+++ b/clang/lib/Basic/Module.cpp
@@ -139,6 +139,15 @@
return Result;
}
+bool Module::fullModuleNameIs(ArrayRef<StringRef> nameParts) const {
+ for (const Module *M = this; M; M = M->Parent) {
+ if (nameParts.empty() || M->Name != nameParts.back())
+ return false;
+ nameParts = nameParts.drop_back();
+ }
+ return nameParts.empty();
+}
+
Module::DirectoryName Module::getUmbrellaDir() const {
if (Header U = getUmbrellaHeader())
return {"", U.Entry->getDir()};