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