1 files changed, 59 insertions, 0 deletions
diff --git a/src/md/datasource/datatargetreader.h b/src/md/datasource/datatargetreader.h
new file mode 100644
index 0000000000..18c94a7576
--- /dev/null
+++ b/src/md/datasource/datatargetreader.h
@@ -0,0 +1,59 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information. 
+//
+
+#ifndef _MD_DATA_TARGET_READER_
+#define _MD_DATA_TARGET_READER_
+
+#include "cor.h"
+#include "cordebug.h"
+
+class DataTargetReader;
+
+class TargetObject
+{
+public:
+    virtual HRESULT ReadFrom(DataTargetReader & reader) = 0;
+};
+
+class DataTargetReader
+{
+public:
+    DataTargetReader(CORDB_ADDRESS remoteAddressCursor, ICorDebugDataTarget* pDataTarget, DWORD targetDefines, DWORD mdStructuresVersion);
+    DataTargetReader(const DataTargetReader & otherReader);
+    DataTargetReader & operator=(const DataTargetReader & rhs);
+    ~DataTargetReader();
+
+    HRESULT Read(TargetObject* pTargetObjectValue);
+    HRESULT ReadPointer(TargetObject* pTargetObjectValue);
+    HRESULT ReadPointer(CORDB_ADDRESS* pPointerValue);
+    HRESULT SkipPointer();
+    HRESULT Read8(BYTE* pByteValue);
+    HRESULT Skip8();
+    HRESULT Read32(ULONG32* pUlong32Value);
+    HRESULT Skip32();
+    HRESULT Read64(ULONG64* pUlong64Value);
+    HRESULT Skip64();
+    HRESULT ReadBytes(BYTE* pBuffer, DWORD cbBuffer);
+    HRESULT SkipBytes(DWORD cbBuffer);
+    void Align(DWORD alignmentBytes);
+    void AlignBase();
+
+    DataTargetReader CreateReaderAt(CORDB_ADDRESS remoteAddressCursor);
+
+    DWORD GetMDStructuresVersion();
+    BOOL IsDefined(DWORD define);
+
+
+private:
+    HRESULT GetRemotePointerSize(ULONG32* pPointerSize);
+    ICorDebugDataTarget* m_pDataTarget;
+    ULONG32 m_remotePointerSize;
+    CORDB_ADDRESS m_remoteAddressCursor;
+    ULONG32 m_currentStructureAlign;
+    DWORD m_targetDefines;
+    DWORD m_mdStructuresVersion;
+};
+
+#endif // _MD_DATA_TARGET_READER_