Keep only base/extractor.[cc|h].

base/marshal_by_value.h

-// Copyright 2010 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// ========================================================================
-//
-// This is an implementation of IMarshal that always marshals by value. class T
-// needs to derive from MarshalByValue, and expose IMarshal through
-// QueryInterface. class T also needs to expose the IPersistStream-style methods
-// GetSizeMax(), Save(), and Load().
-
-#ifndef OMAHA_BASE_MARSHAL_BY_VALUE_H_
-#define OMAHA_BASE_MARSHAL_BY_VALUE_H_
-
-#include <atlbase.h>
-#include "omaha/base/debug.h"
-
-namespace omaha {
-
-template <class T>
-class ATL_NO_VTABLE MarshalByValue : public IMarshal {
- public:
-  STDMETHOD(GetUnmarshalClass)(REFIID, void*, DWORD, void*, DWORD,
-                               CLSID* clsid) {
-    ASSERT1(clsid);
-    *clsid = T::GetObjectCLSID();
-    return S_OK;
-  }
-
-  STDMETHOD(ReleaseMarshalData)(IStream* stream) {
-    UNREFERENCED_PARAMETER(stream);
-    return S_OK;
-  }
-
-  STDMETHOD(DisconnectObject)(DWORD) {
-    return S_OK;
-  }
-
-  STDMETHOD(GetMarshalSizeMax)(REFIID, void*, DWORD, void*, DWORD,
-                               DWORD* size) {
-    ASSERT1(size);
-
-    T* persist = static_cast<T*>(this);
-    ULARGE_INTEGER size_max = {0};
-    HRESULT hr = persist->GetSizeMax(&size_max);
-    if (FAILED(hr)) {
-      return hr;
-    }
-
-    *size = size_max.LowPart;
-    return S_OK;
-  }
-
-  STDMETHOD(MarshalInterface)(IStream* stream, REFIID, void*, DWORD, void*,
-                              DWORD) {
-    ASSERT1(stream);
-
-    T* persist = static_cast<T*>(this);
-    return persist->Save(stream, FALSE);
-  }
-
-  STDMETHOD(UnmarshalInterface)(IStream* stream, REFIID iid, void** ptr) {
-    ASSERT1(stream);
-    ASSERT1(ptr);
-
-    T* persist = static_cast<T*>(this);
-    HRESULT hr = persist->Load(stream);
-    if (FAILED(hr)) {
-      return hr;
-    }
-
-    return persist->QueryInterface(iid, ptr);
-  }
-};
-
-}  // namespace omaha
-
-#endif  // OMAHA_BASE_MARSHAL_BY_VALUE_H_
-