Move the windows-specific scoped_* stuff from base to base/win and in the bas...

base/scoped_variant_win.cc

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/scoped_variant_win.h"
-#include "base/logging.h"
-
-// Global, const instance of an empty variant.
-const VARIANT ScopedVariant::kEmptyVariant = { VT_EMPTY };
-
-ScopedVariant::~ScopedVariant() {
-  COMPILE_ASSERT(sizeof(ScopedVariant) == sizeof(VARIANT), ScopedVariantSize);
-  ::VariantClear(&var_);
-}
-
-ScopedVariant::ScopedVariant(const wchar_t* str) {
-  var_.vt = VT_EMPTY;
-  Set(str);
-}
-
-ScopedVariant::ScopedVariant(const wchar_t* str, UINT length) {
-  var_.vt = VT_BSTR;
-  var_.bstrVal = ::SysAllocStringLen(str, length);
-}
-
-ScopedVariant::ScopedVariant(int value, VARTYPE vt) {
-  var_.vt = vt;
-  var_.lVal = value;
-}
-
-ScopedVariant::ScopedVariant(double value, VARTYPE vt) {
-  DCHECK(vt == VT_R8 || vt == VT_DATE);
-  var_.vt = vt;
-  var_.dblVal = value;
-}
-
-ScopedVariant::ScopedVariant(IDispatch* dispatch) {
-  var_.vt = VT_EMPTY;
-  Set(dispatch);
-}
-
-ScopedVariant::ScopedVariant(IUnknown* unknown) {
-  var_.vt = VT_EMPTY;
-  Set(unknown);
-}
-
-ScopedVariant::ScopedVariant(SAFEARRAY* safearray) {
-  var_.vt = VT_EMPTY;
-  Set(safearray);
-}
-
-ScopedVariant::ScopedVariant(const VARIANT& var) {
-  var_.vt = VT_EMPTY;
-  Set(var);
-}
-
-void ScopedVariant::Reset(const VARIANT& var) {
-  if (&var != &var_) {
-    ::VariantClear(&var_);
-    var_ = var;
-  }
-}
-
-VARIANT ScopedVariant::Release() {
-  VARIANT var = var_;
-  var_.vt = VT_EMPTY;
-  return var;
-}
-
-void ScopedVariant::Swap(ScopedVariant& var) {
-  VARIANT tmp = var_;
-  var_ = var.var_;
-  var.var_ = tmp;
-}
-
-VARIANT* ScopedVariant::Receive() {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "variant leak. type: " << var_.vt;
-  return &var_;
-}
-
-VARIANT ScopedVariant::Copy() const {
-  VARIANT ret = { VT_EMPTY };
-  ::VariantCopy(&ret, &var_);
-  return ret;
-}
-
-int ScopedVariant::Compare(const VARIANT& var, bool ignore_case) const {
-  ULONG flags = ignore_case ? NORM_IGNORECASE : 0;
-  HRESULT hr = ::VarCmp(const_cast<VARIANT*>(&var_), const_cast<VARIANT*>(&var),
-                        LOCALE_USER_DEFAULT, flags);
-  int ret = 0;
-
-  switch (hr) {
-    case VARCMP_LT:
-      ret = -1;
-      break;
-
-    case VARCMP_GT:
-    case VARCMP_NULL:
-      ret = 1;
-      break;
-
-    default:
-      // Equal.
-      break;
-  }
-
-  return ret;
-}
-
-void ScopedVariant::Set(const wchar_t* str) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_BSTR;
-  var_.bstrVal = ::SysAllocString(str);
-}
-
-void ScopedVariant::Set(int8 i8) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_I1;
-  var_.cVal = i8;
-}
-
-void ScopedVariant::Set(uint8 ui8) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_UI1;
-  var_.bVal = ui8;
-}
-
-void ScopedVariant::Set(int16 i16) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_I2;
-  var_.iVal = i16;
-}
-
-void ScopedVariant::Set(uint16 ui16) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_UI2;
-  var_.uiVal = ui16;
-}
-
-void ScopedVariant::Set(int32 i32) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_I4;
-  var_.lVal = i32;
-}
-
-void ScopedVariant::Set(uint32 ui32) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_UI4;
-  var_.ulVal = ui32;
-}
-
-void ScopedVariant::Set(int64 i64) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_I8;
-  var_.llVal = i64;
-}
-
-void ScopedVariant::Set(uint64 ui64) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_UI8;
-  var_.ullVal = ui64;
-}
-
-void ScopedVariant::Set(float r32) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_R4;
-  var_.fltVal = r32;
-}
-
-void ScopedVariant::Set(double r64) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_R8;
-  var_.dblVal = r64;
-}
-
-void ScopedVariant::SetDate(DATE date) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_DATE;
-  var_.date = date;
-}
-
-void ScopedVariant::Set(IDispatch* disp) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_DISPATCH;
-  var_.pdispVal = disp;
-  if (disp)
-    disp->AddRef();
-}
-
-void ScopedVariant::Set(bool b) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_BOOL;
-  var_.boolVal = b ? VARIANT_TRUE : VARIANT_FALSE;
-}
-
-void ScopedVariant::Set(IUnknown* unk) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  var_.vt = VT_UNKNOWN;
-  var_.punkVal = unk;
-  if (unk)
-    unk->AddRef();
-}
-
-void ScopedVariant::Set(SAFEARRAY* array) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  if (SUCCEEDED(::SafeArrayGetVartype(array, &var_.vt))) {
-    var_.vt |= VT_ARRAY;
-    var_.parray = array;
-  } else {
-    DCHECK(array == NULL) << "Unable to determine safearray vartype";
-    var_.vt = VT_EMPTY;
-  }
-}
-
-void ScopedVariant::Set(const VARIANT& var) {
-  DCHECK(!IsLeakableVarType(var_.vt)) << "leaking variant: " << var_.vt;
-  if (FAILED(::VariantCopy(&var_, &var))) {
-    DLOG(ERROR) << "VariantCopy failed";
-    var_.vt = VT_EMPTY;
-  }
-}
-
-ScopedVariant& ScopedVariant::operator=(const VARIANT& var) {
-  if (&var != &var_) {
-    VariantClear(&var_);
-    Set(var);
-  }
-  return *this;
-}
-
-bool ScopedVariant::IsLeakableVarType(VARTYPE vt) {
-  bool leakable = false;
-  switch (vt & VT_TYPEMASK) {
-    case VT_BSTR:
-    case VT_DISPATCH:
-    // we treat VT_VARIANT as leakable to err on the safe side.
-    case VT_VARIANT:
-    case VT_UNKNOWN:
-    case VT_SAFEARRAY:
-
-    // very rarely used stuff (if ever):
-    case VT_VOID:
-    case VT_PTR:
-    case VT_CARRAY:
-    case VT_USERDEFINED:
-    case VT_LPSTR:
-    case VT_LPWSTR:
-    case VT_RECORD:
-    case VT_INT_PTR:
-    case VT_UINT_PTR:
-    case VT_FILETIME:
-    case VT_BLOB:
-    case VT_STREAM:
-    case VT_STORAGE:
-    case VT_STREAMED_OBJECT:
-    case VT_STORED_OBJECT:
-    case VT_BLOB_OBJECT:
-    case VT_VERSIONED_STREAM:
-    case VT_BSTR_BLOB:
-      leakable = true;
-      break;
-  }
-
-  if (!leakable && (vt & VT_ARRAY) != 0) {
-    leakable = true;
-  }
-
-  return leakable;
-}