1 files changed, 46 insertions, 0 deletions
diff --git a/llvm/lib/DebugInfo/PDB/DIA/DIAEnumDebugStreams.cpp b/llvm/lib/DebugInfo/PDB/DIA/DIAEnumDebugStreams.cpp
new file mode 100644
index 0000000000000..e4cb4daf94b14
--- /dev/null
+++ b/llvm/lib/DebugInfo/PDB/DIA/DIAEnumDebugStreams.cpp
@@ -0,0 +1,46 @@
+//==- DIAEnumDebugStreams.cpp - DIA Debug Stream Enumerator impl -*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/PDB/DIA/DIAEnumDebugStreams.h"
+#include "llvm/DebugInfo/PDB/DIA/DIADataStream.h"
+#include "llvm/DebugInfo/PDB/PDBSymbol.h"
+
+using namespace llvm;
+using namespace llvm::pdb;
+
+DIAEnumDebugStreams::DIAEnumDebugStreams(
+    CComPtr<IDiaEnumDebugStreams> DiaEnumerator)
+    : Enumerator(DiaEnumerator) {}
+
+uint32_t DIAEnumDebugStreams::getChildCount() const {
+  LONG Count = 0;
+  return (S_OK == Enumerator->get_Count(&Count)) ? Count : 0;
+}
+
+std::unique_ptr<IPDBDataStream>
+DIAEnumDebugStreams::getChildAtIndex(uint32_t Index) const {
+  CComPtr<IDiaEnumDebugStreamData> Item;
+  VARIANT VarIndex;
+  VarIndex.vt = VT_I4;
+  VarIndex.lVal = Index;
+  if (S_OK != Enumerator->Item(VarIndex, &Item))
+    return nullptr;
+
+  return std::unique_ptr<IPDBDataStream>(new DIADataStream(Item));
+}
+
+std::unique_ptr<IPDBDataStream> DIAEnumDebugStreams::getNext() {
+  CComPtr<IDiaEnumDebugStreamData> Item;
+  ULONG NumFetched = 0;
+  if (S_OK != Enumerator->Next(1, &Item, &NumFetched))
+    return nullptr;
+
+  return std::unique_ptr<IPDBDataStream>(new DIADataStream(Item));
+}
+
+void DIAEnumDebugStreams::reset() { Enumerator->Reset(); }