1 files changed, 25 insertions, 2 deletions
diff --git a/clang-tools-extra/clangd/Headers.h b/clang-tools-extra/clangd/Headers.h
index 5a20ea268fd..33b6ff2eacb 100644
--- a/clang-tools-extra/clangd/Headers.h
+++ b/clang-tools-extra/clangd/Headers.h
@@ -62,8 +62,15 @@ llvm::raw_ostream &operator<<(llvm::raw_ostream &, const Inclusion &);
 // dependencies. Doesn't own the strings it references (IncludeGraph is
 // self-contained).
 struct IncludeGraphNode {
-  // True if current file is a main file rather than a header.
-  bool IsTU = false;
+  enum class SourceFlag : uint8_t {
+    None = 0,
+    // Whether current file is a main file rather than a header.
+    IsTU = 1 << 0,
+    // Whether current file had any uncompilable errors during indexing.
+    HadErrors = 1 << 1,
+  };
+
+  SourceFlag Flags = SourceFlag::None;
   llvm::StringRef URI;
   FileDigest Digest{{0}};
   std::vector<llvm::StringRef> DirectIncludes;
@@ -74,6 +81,22 @@ struct IncludeGraphNode {
 // edges and multi edges.
 using IncludeGraph = llvm::StringMap<IncludeGraphNode>;
 
+inline IncludeGraphNode::SourceFlag operator|(IncludeGraphNode::SourceFlag A,
+                                              IncludeGraphNode::SourceFlag B) {
+  return static_cast<IncludeGraphNode::SourceFlag>(static_cast<uint8_t>(A) |
+                                                   static_cast<uint8_t>(B));
+}
+
+inline bool operator&(IncludeGraphNode::SourceFlag A,
+                      IncludeGraphNode::SourceFlag B) {
+  return static_cast<uint8_t>(A) & static_cast<uint8_t>(B);
+}
+
+inline IncludeGraphNode::SourceFlag &
+operator|=(IncludeGraphNode::SourceFlag &A, IncludeGraphNode::SourceFlag B) {
+  return A = A | B;
+}
+
 // Information captured about the inclusion graph in a translation unit.
 // This includes detailed information about the direct #includes, and summary
 // information about all transitive includes.