/* * Copyright (c) 2016 Apple Inc. All Rights Reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #ifndef casts_h #define casts_h #include <stdexcept> #include <security_utilities/debugging.h> #include <syslog.h> template<typename TSource, typename TResult> static inline TResult int_cast(TSource value) { // TODO: if we're using C++11, we should do some static_asserts on the signedness of these types TResult result = static_cast<TResult>(value); if (static_cast<TSource>(result) != value) { #ifndef NDEBUG syslog(LOG_ERR, "%s: casted value out of range", __PRETTY_FUNCTION__); #endif secnotice("int_cast", "casted value out of range"); throw std::out_of_range("int_cast: casted value out of range"); } return result; } #endif /* casts_h */