When an import statement fails to find a module in the module cache,

but there is a corresponding umbrella header in a framework, build the
module on-the-fly so it can be immediately loaded at the import
statement. This is very much proof-of-concept code, with details to be
fleshed out over time.

llvm-svn: 139558

1 files changed, 4 insertions, 0 deletions

diff --git a/clang/lib/Basic/FileManager.cpp b/clang/lib/Basic/FileManager.cpp
index 4ac8e4da1d8..adc9705405b 100644
--- a/clang/lib/Basic/FileManager.cpp
+++ b/clang/lib/Basic/FileManager.cpp
@@ -380,6 +380,10 @@ const FileEntry *FileManager::getFile(StringRef Filename, bool openFile) {
   return &UFE;
 }
 
+void FileManager::forgetFile(StringRef Filename) {
+  SeenFileEntries.erase(Filename);
+}
+
 const FileEntry *
 FileManager::getVirtualFile(StringRef Filename, off_t Size,
                             time_t ModificationTime) {