/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this file, * You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "mozilla/Casting.h" #include <stdint.h> using mozilla::BitwiseCast; using mozilla::detail::IsInBounds; template<typename Uint, typename Ulong, bool = (sizeof(Uint) == sizeof(Ulong))> struct UintUlongBitwiseCast; template<typename Uint, typename Ulong> struct UintUlongBitwiseCast<Uint, Ulong, true> { static void test() { MOZ_RELEASE_ASSERT(BitwiseCast<Ulong>(Uint(8675309)) == Ulong(8675309)); } }; template<typename Uint, typename Ulong> struct UintUlongBitwiseCast<Uint, Ulong, false> { static void test() { } }; static void TestBitwiseCast() { MOZ_RELEASE_ASSERT(BitwiseCast<int>(int(8675309)) == int(8675309)); UintUlongBitwiseCast<unsigned int, unsigned long>::test(); } static void TestSameSize() { MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int16_t>(int16_t(0)))); MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int16_t>(int16_t(INT16_MIN)))); MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int16_t>(int16_t(INT16_MAX)))); MOZ_RELEASE_ASSERT((IsInBounds<uint16_t, uint16_t>(uint16_t(UINT16_MAX)))); MOZ_RELEASE_ASSERT((IsInBounds<uint16_t, int16_t>(uint16_t(0)))); MOZ_RELEASE_ASSERT((!IsInBounds<uint16_t, int16_t>(uint16_t(-1)))); MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint16_t>(int16_t(-1)))); MOZ_RELEASE_ASSERT((IsInBounds<int16_t, uint16_t>(int16_t(INT16_MAX)))); MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint16_t>(int16_t(INT16_MIN)))); MOZ_RELEASE_ASSERT((IsInBounds<int32_t, uint32_t>(int32_t(INT32_MAX)))); MOZ_RELEASE_ASSERT((!IsInBounds<int32_t, uint32_t>(int32_t(INT32_MIN)))); } static void TestToBiggerSize() { MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int32_t>(int16_t(0)))); MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int32_t>(int16_t(INT16_MIN)))); MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int32_t>(int16_t(INT16_MAX)))); MOZ_RELEASE_ASSERT((IsInBounds<uint16_t, uint32_t>(uint16_t(UINT16_MAX)))); MOZ_RELEASE_ASSERT((IsInBounds<uint16_t, int32_t>(uint16_t(0)))); MOZ_RELEASE_ASSERT((IsInBounds<uint16_t, int32_t>(uint16_t(-1)))); MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint32_t>(int16_t(-1)))); MOZ_RELEASE_ASSERT((IsInBounds<int16_t, uint32_t>(int16_t(INT16_MAX)))); MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint32_t>(int16_t(INT16_MIN)))); MOZ_RELEASE_ASSERT((IsInBounds<int32_t, uint64_t>(int32_t(INT32_MAX)))); MOZ_RELEASE_ASSERT((!IsInBounds<int32_t, uint64_t>(int32_t(INT32_MIN)))); } static void TestToSmallerSize() { MOZ_RELEASE_ASSERT((IsInBounds<int16_t, int8_t>(int16_t(0)))); MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, int8_t>(int16_t(INT16_MIN)))); MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, int8_t>(int16_t(INT16_MAX)))); MOZ_RELEASE_ASSERT((!IsInBounds<uint16_t, uint8_t>(uint16_t(UINT16_MAX)))); MOZ_RELEASE_ASSERT((IsInBounds<uint16_t, int8_t>(uint16_t(0)))); MOZ_RELEASE_ASSERT((!IsInBounds<uint16_t, int8_t>(uint16_t(-1)))); MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint8_t>(int16_t(-1)))); MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint8_t>(int16_t(INT16_MAX)))); MOZ_RELEASE_ASSERT((!IsInBounds<int16_t, uint8_t>(int16_t(INT16_MIN)))); MOZ_RELEASE_ASSERT((!IsInBounds<int32_t, uint16_t>(int32_t(INT32_MAX)))); MOZ_RELEASE_ASSERT((!IsInBounds<int32_t, uint16_t>(int32_t(INT32_MIN)))); // Boundary cases MOZ_RELEASE_ASSERT((!IsInBounds<int64_t, int32_t>(int64_t(INT32_MIN) - 1))); MOZ_RELEASE_ASSERT((IsInBounds<int64_t, int32_t>(int64_t(INT32_MIN)))); MOZ_RELEASE_ASSERT((IsInBounds<int64_t, int32_t>(int64_t(INT32_MIN) + 1))); MOZ_RELEASE_ASSERT((IsInBounds<int64_t, int32_t>(int64_t(INT32_MAX) - 1))); MOZ_RELEASE_ASSERT((IsInBounds<int64_t, int32_t>(int64_t(INT32_MAX)))); MOZ_RELEASE_ASSERT((!IsInBounds<int64_t, int32_t>(int64_t(INT32_MAX) + 1))); MOZ_RELEASE_ASSERT((!IsInBounds<int64_t, uint32_t>(int64_t(-1)))); MOZ_RELEASE_ASSERT((IsInBounds<int64_t, uint32_t>(int64_t(0)))); MOZ_RELEASE_ASSERT((IsInBounds<int64_t, uint32_t>(int64_t(1)))); MOZ_RELEASE_ASSERT((IsInBounds<int64_t, uint32_t>(int64_t(UINT32_MAX) - 1))); MOZ_RELEASE_ASSERT((IsInBounds<int64_t, uint32_t>(int64_t(UINT32_MAX)))); MOZ_RELEASE_ASSERT((!IsInBounds<int64_t, uint32_t>(int64_t(UINT32_MAX) + 1))); } int main() { TestBitwiseCast(); TestSameSize(); TestToBiggerSize(); TestToSmallerSize(); return 0; }