1 files changed, 48 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/include/llvm/DebugInfo/PDB/IPDBEnumChildren.h b/contrib/llvm-project/llvm/include/llvm/DebugInfo/PDB/IPDBEnumChildren.h
new file mode 100644
index 000000000000..bfa67d39bc76
--- /dev/null
+++ b/contrib/llvm-project/llvm/include/llvm/DebugInfo/PDB/IPDBEnumChildren.h
@@ -0,0 +1,48 @@
+//===- IPDBEnumChildren.h - base interface for child enumerator -*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_PDB_IPDBENUMCHILDREN_H
+#define LLVM_DEBUGINFO_PDB_IPDBENUMCHILDREN_H
+
+#include <cassert>
+#include <cstdint>
+#include <memory>
+
+namespace llvm {
+namespace pdb {
+
+template <typename ChildType> class IPDBEnumChildren {
+public:
+  using ChildTypePtr = std::unique_ptr<ChildType>;
+  using MyType = IPDBEnumChildren<ChildType>;
+
+  virtual ~IPDBEnumChildren() = default;
+
+  virtual uint32_t getChildCount() const = 0;
+  virtual ChildTypePtr getChildAtIndex(uint32_t Index) const = 0;
+  virtual ChildTypePtr getNext() = 0;
+  virtual void reset() = 0;
+};
+
+template <typename ChildType>
+class NullEnumerator : public IPDBEnumChildren<ChildType> {
+  virtual uint32_t getChildCount() const override { return 0; }
+  virtual std::unique_ptr<ChildType>
+  getChildAtIndex(uint32_t Index) const override {
+    return nullptr;
+  }
+  virtual std::unique_ptr<ChildType> getNext() override {
+    return nullptr;
+  }
+  virtual void reset() override {}
+};
+
+} // end namespace pdb
+} // end namespace llvm
+
+#endif // LLVM_DEBUGINFO_PDB_IPDBENUMCHILDREN_H