[Modules] Introduce Module::TopHeaders which is a set of top-level headers

that are associated with a (sub)module.

llvm-svn: 165279

1 files changed, 17 insertions, 1 deletions

diff --git a/clang/lib/Serialization/ASTReader.cpp b/clang/lib/Serialization/ASTReader.cpp
index 79173f50c54..ff418caf9ef 100644
--- a/clang/lib/Serialization/ASTReader.cpp
+++ b/clang/lib/Serialization/ASTReader.cpp
@@ -3230,7 +3230,23 @@ ASTReader::ASTReadResult ASTReader::ReadSubmoduleBlock(ModuleFile &F) {
       }
       break;      
     }
-        
+
+    case SUBMODULE_TOPHEADER: {
+      if (First) {
+        Error("missing submodule metadata record at beginning of block");
+        return Failure;
+      }
+
+      if (!CurrentModule)
+        break;
+
+      // FIXME: Be more lazy about this!
+      StringRef FileName(BlobStart, BlobLen);
+      if (const FileEntry *File = PP.getFileManager().getFile(FileName))
+        CurrentModule->TopHeaders.insert(File);
+      break;
+    }
+
     case SUBMODULE_UMBRELLA_DIR: {
       if (First) {
         Error("missing submodule metadata record at beginning of block");