1 files changed, 66 insertions, 0 deletions
diff --git a/include/llvm/DebugInfo/CodeView/DebugSubsectionVisitor.h b/include/llvm/DebugInfo/CodeView/DebugSubsectionVisitor.h
new file mode 100644
index 000000000000..55bef491c97e
--- /dev/null
+++ b/include/llvm/DebugInfo/CodeView/DebugSubsectionVisitor.h
@@ -0,0 +1,66 @@
+//===- DebugSubsectionVisitor.h -----------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_CODEVIEW_MODULEDEBUGFRAGMENTVISITOR_H
+#define LLVM_DEBUGINFO_CODEVIEW_MODULEDEBUGFRAGMENTVISITOR_H
+
+#include "llvm/Support/Error.h"
+#include <cstdint>
+
+namespace llvm {
+
+namespace codeview {
+
+class DebugChecksumsSubsectionRef;
+class DebugSubsectionRecord;
+class DebugInlineeLinesSubsectionRef;
+class DebugLinesSubsectionRef;
+class DebugUnknownSubsectionRef;
+
+class DebugSubsectionVisitor {
+public:
+  virtual ~DebugSubsectionVisitor() = default;
+
+  virtual Error visitUnknown(DebugUnknownSubsectionRef &Unknown) {
+    return Error::success();
+  }
+  virtual Error visitLines(DebugLinesSubsectionRef &Lines) {
+    return Error::success();
+  }
+
+  virtual Error visitFileChecksums(DebugChecksumsSubsectionRef &Checksums) {
+    return Error::success();
+  }
+
+  virtual Error visitInlineeLines(DebugInlineeLinesSubsectionRef &Inlinees) {
+    return Error::success();
+  }
+
+  virtual Error finished() { return Error::success(); }
+};
+
+Error visitDebugSubsection(const DebugSubsectionRecord &R,
+                           DebugSubsectionVisitor &V);
+
+template <typename T>
+Error visitDebugSubsections(T &&FragmentRange, DebugSubsectionVisitor &V) {
+  for (const auto &L : FragmentRange) {
+    if (auto EC = visitDebugSubsection(L, V))
+      return EC;
+  }
+  if (auto EC = V.finished())
+    return EC;
+  return Error::success();
+}
+
+} // end namespace codeview
+
+} // end namespace llvm
+
+#endif // LLVM_DEBUGINFO_CODEVIEW_MODULEDEBUGFRAGMENTVISITOR_H