| /* |
| * Copyright (C) 2011 Apple 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: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 CheckedBoolean_h |
| #define CheckedBoolean_h |
| |
| #include <wtf/Assertions.h> |
| |
| #if defined(__LB_SHELL__) || OS(STARBOARD) |
| // This class assumes the compiler doesn't make a copy of the object when |
| // returning it. |
| typedef bool CheckedBoolean; |
| #else |
| |
| class CheckedBoolean { |
| public: |
| CheckedBoolean(bool value) |
| : m_value(value) |
| #if !ASSERT_DISABLED |
| , m_checked(false) |
| #endif |
| { |
| } |
| |
| ~CheckedBoolean() |
| { |
| ASSERT(m_checked); |
| } |
| |
| operator bool() |
| { |
| #if !ASSERT_DISABLED |
| m_checked = true; |
| #endif |
| return m_value; |
| } |
| |
| private: |
| bool m_value; |
| #if !ASSERT_DISABLED |
| bool m_checked; |
| #endif |
| }; |
| #endif |
| |
| #endif |