1 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "base/win/scoped_bstr.h"
7 #include "base/logging.h"
12 ScopedBstr::ScopedBstr(const char16* non_bstr)
13 : bstr_(SysAllocString(non_bstr)) {
16 ScopedBstr::~ScopedBstr() {
17 COMPILE_ASSERT(sizeof(ScopedBstr) == sizeof(BSTR), ScopedBstrSize);
21 void ScopedBstr::Reset(BSTR bstr) {
23 // if |bstr_| is NULL, SysFreeString does nothing.
29 BSTR ScopedBstr::Release() {
35 void ScopedBstr::Swap(ScopedBstr& bstr2) {
41 BSTR* ScopedBstr::Receive() {
42 DCHECK(!bstr_) << "BSTR leak.";
46 BSTR ScopedBstr::Allocate(const char16* str) {
47 Reset(SysAllocString(str));
51 BSTR ScopedBstr::AllocateBytes(size_t bytes) {
52 Reset(SysAllocStringByteLen(NULL, static_cast<UINT>(bytes)));
56 void ScopedBstr::SetByteLen(size_t bytes) {
57 DCHECK(bstr_ != NULL) << "attempting to modify a NULL bstr";
58 uint32* data = reinterpret_cast<uint32*>(bstr_);
59 data[-1] = static_cast<uint32>(bytes);
62 size_t ScopedBstr::Length() const {
63 return SysStringLen(bstr_);
66 size_t ScopedBstr::ByteLength() const {
67 return SysStringByteLen(bstr_);