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author | initial.commit <initial.commit@0039d316-1c4b-4281-b951-d872f2087c98> | 2008-07-26 21:49:38 +0000 |
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committer | initial.commit <initial.commit@0039d316-1c4b-4281-b951-d872f2087c98> | 2008-07-26 21:49:38 +0000 |
commit | d7cae12696b96500c05dd2d430f6238922c20c96 (patch) | |
tree | ecff27b367735535b2a66477f8cd89d3c462a6c0 /base/scoped_cftyperef.h | |
parent | ee2815e28d408216cf94e874825b6bcf76c69083 (diff) | |
download | chromium_src-d7cae12696b96500c05dd2d430f6238922c20c96.zip chromium_src-d7cae12696b96500c05dd2d430f6238922c20c96.tar.gz chromium_src-d7cae12696b96500c05dd2d430f6238922c20c96.tar.bz2 |
Add base to the repository.
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@8 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'base/scoped_cftyperef.h')
-rw-r--r-- | base/scoped_cftyperef.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/base/scoped_cftyperef.h b/base/scoped_cftyperef.h new file mode 100644 index 0000000..f4623fe --- /dev/null +++ b/base/scoped_cftyperef.h @@ -0,0 +1,97 @@ +// Copyright 2008, Google Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#ifndef BASE_SCOPED_CFTYPEREF_H__ +#define BASE_SCOPED_CFTYPEREF_H__ + +#include <CoreFoundation/CoreFoundation.h> + +// scoped_cftyperef<> is patterned after scoped_ptr<>, but maintains ownership +// of a CoreFoundation object: any object that can be represented as a +// CFTypeRef. Style deviations here are solely for compatibility with +// scoped_ptr<>'s interface, with which everyone is already familiar. +template<typename CFT> +class scoped_cftyperef { + public: + typedef CFT element_type; + + explicit scoped_cftyperef(CFT object = NULL) + : object_(object) { + } + + ~scoped_cftyperef() { + if (object_) + CFRelease(object_); + } + + void reset(CFT object = NULL) { + if (object_ && object_ != object) { + CFRelease(object_); + object_ = object; + } + } + + bool operator==(CFT that) const { + return object_ == that; + } + + bool operator!=(CFT that) const { + return object_ != that; + } + + operator CFT() const { + return object_; + } + + CFT get() const { + return object_; + } + + void swap(scoped_cftyperef& that) { + CFT temp = that.object_; + that.object_ = object_; + object_ = temp; + } + + // scoped_cftyperef<>::release() is like scoped_ptr<>::release. It is NOT + // a wrapper for CFRelease(). To force a scoped_cftyperef<> object to call + // CFRelease(), use scoped_cftyperef<>::reset(). + CFT release() { + CFT temp = object_; + object_ = NULL; + return temp; + } + + private: + CFT object_; + + DISALLOW_EVIL_CONSTRUCTORS(scoped_cftyperef); +}; + +#endif // BASE_SCOPED_CFTYPEREF_H__ |