| /* | |
| * Copyright (c) 2008 The Hewlett-Packard Development Company | |
| * 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 the copyright holders 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. | |
| * | |
| * Authors: Nathan Binkert | |
| */ | |
| #ifndef __BASE_CAST_HH__ | |
| #define __BASE_CAST_HH__ | |
| #include <cassert> | |
| // This is designed for situations where we have a pointer to a base | |
| // type, but in all cases when we cast it to a derived type, we know | |
| // by construction that it should work correctly. | |
| #if defined(DEBUG) | |
| // In debug builds, do the dynamic cast and assert the result is good | |
| template <class T, class U> | |
| inline T | |
| safe_cast(U ptr) | |
| { | |
| T ret = dynamic_cast<T>(ptr); | |
| assert(ret); | |
| return ret; | |
| } | |
| #else | |
| // In non debug builds statically cast the result to the pointer we | |
| // want to use. This is technically unsafe, but this is only for | |
| // cases where we know that this should work by construction. | |
| template <class T, class U> | |
| inline T | |
| safe_cast(U ptr) | |
| { | |
| return static_cast<T>(ptr); | |
| } | |
| #endif | |
| #endif // __BASE_CAST_HH__ |