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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/Assertions.h"
#include "mozilla/EnumTypeTraits.h"
#include <cstdint>
using namespace mozilla;
/* Feature check for EnumTypeFitsWithin. */
#define MAKE_FIXED_EMUM_FOR_TYPE(IntType) \
enum FixedEnumFor_##IntType : IntType{ \
A_##IntType, \
B_##IntType, \
C_##IntType, \
};
template <typename EnumType, typename IntType>
static void TestShouldFit() {
static_assert(EnumTypeFitsWithin<EnumType, IntType>::value,
"Should fit within exact/promoted integral type");
}
template <typename EnumType, typename IntType>
static void TestShouldNotFit() {
static_assert(!EnumTypeFitsWithin<EnumType, IntType>::value,
"Should not fit within");
}
void TestFitForTypes() {
// check for int8_t
MAKE_FIXED_EMUM_FOR_TYPE(int8_t);
TestShouldFit<FixedEnumFor_int8_t, int8_t>();
TestShouldFit<FixedEnumFor_int8_t, int16_t>();
TestShouldFit<FixedEnumFor_int8_t, int32_t>();
TestShouldFit<FixedEnumFor_int8_t, int64_t>();
TestShouldNotFit<FixedEnumFor_int8_t, uint8_t>();
TestShouldNotFit<FixedEnumFor_int8_t, uint16_t>();
TestShouldNotFit<FixedEnumFor_int8_t, uint32_t>();
TestShouldNotFit<FixedEnumFor_int8_t, uint64_t>();
// check for uint8_t
MAKE_FIXED_EMUM_FOR_TYPE(uint8_t);
TestShouldFit<FixedEnumFor_uint8_t, uint8_t>();
TestShouldFit<FixedEnumFor_uint8_t, uint16_t>();
TestShouldFit<FixedEnumFor_uint8_t, uint32_t>();
TestShouldFit<FixedEnumFor_uint8_t, uint64_t>();
TestShouldNotFit<FixedEnumFor_uint8_t, int8_t>();
TestShouldFit<FixedEnumFor_uint8_t, int16_t>();
TestShouldFit<FixedEnumFor_uint8_t, int32_t>();
TestShouldFit<FixedEnumFor_uint8_t, int64_t>();
// check for int16_t
MAKE_FIXED_EMUM_FOR_TYPE(int16_t);
TestShouldNotFit<FixedEnumFor_int16_t, int8_t>();
TestShouldFit<FixedEnumFor_int16_t, int16_t>();
TestShouldFit<FixedEnumFor_int16_t, int32_t>();
TestShouldFit<FixedEnumFor_int16_t, int64_t>();
TestShouldNotFit<FixedEnumFor_int16_t, uint8_t>();
TestShouldNotFit<FixedEnumFor_int16_t, uint16_t>();
TestShouldNotFit<FixedEnumFor_int16_t, uint32_t>();
TestShouldNotFit<FixedEnumFor_int16_t, uint64_t>();
// check for uint16_t
MAKE_FIXED_EMUM_FOR_TYPE(uint16_t);
TestShouldNotFit<FixedEnumFor_uint16_t, uint8_t>();
TestShouldFit<FixedEnumFor_uint16_t, uint16_t>();
TestShouldFit<FixedEnumFor_uint16_t, uint32_t>();
TestShouldFit<FixedEnumFor_uint16_t, uint64_t>();
TestShouldNotFit<FixedEnumFor_uint16_t, int8_t>();
TestShouldNotFit<FixedEnumFor_uint16_t, int16_t>();
TestShouldFit<FixedEnumFor_uint16_t, int32_t>();
TestShouldFit<FixedEnumFor_uint16_t, int64_t>();
// check for int32_t
MAKE_FIXED_EMUM_FOR_TYPE(int32_t);
TestShouldNotFit<FixedEnumFor_int32_t, int8_t>();
TestShouldNotFit<FixedEnumFor_int32_t, int16_t>();
TestShouldFit<FixedEnumFor_int32_t, int32_t>();
TestShouldFit<FixedEnumFor_int32_t, int64_t>();
TestShouldNotFit<FixedEnumFor_int32_t, uint8_t>();
TestShouldNotFit<FixedEnumFor_int32_t, uint16_t>();
TestShouldNotFit<FixedEnumFor_int32_t, uint32_t>();
TestShouldNotFit<FixedEnumFor_int32_t, uint64_t>();
// check for uint32_t
MAKE_FIXED_EMUM_FOR_TYPE(uint32_t);
TestShouldNotFit<FixedEnumFor_uint32_t, uint8_t>();
TestShouldNotFit<FixedEnumFor_uint32_t, uint16_t>();
TestShouldFit<FixedEnumFor_uint32_t, uint32_t>();
TestShouldFit<FixedEnumFor_uint32_t, uint64_t>();
TestShouldNotFit<FixedEnumFor_uint32_t, int8_t>();
TestShouldNotFit<FixedEnumFor_uint32_t, int16_t>();
TestShouldNotFit<FixedEnumFor_uint32_t, int32_t>();
TestShouldFit<FixedEnumFor_uint32_t, int64_t>();
// check for int64_t
MAKE_FIXED_EMUM_FOR_TYPE(int64_t);
TestShouldNotFit<FixedEnumFor_int64_t, int8_t>();
TestShouldNotFit<FixedEnumFor_int64_t, int16_t>();
TestShouldNotFit<FixedEnumFor_int64_t, int32_t>();
TestShouldFit<FixedEnumFor_int64_t, int64_t>();
TestShouldNotFit<FixedEnumFor_int64_t, uint8_t>();
TestShouldNotFit<FixedEnumFor_int64_t, uint16_t>();
TestShouldNotFit<FixedEnumFor_int64_t, uint32_t>();
TestShouldNotFit<FixedEnumFor_int64_t, uint64_t>();
// check for uint64_t
MAKE_FIXED_EMUM_FOR_TYPE(uint64_t);
TestShouldNotFit<FixedEnumFor_uint64_t, uint8_t>();
TestShouldNotFit<FixedEnumFor_uint64_t, uint16_t>();
TestShouldNotFit<FixedEnumFor_uint64_t, uint32_t>();
TestShouldFit<FixedEnumFor_uint64_t, uint64_t>();
TestShouldNotFit<FixedEnumFor_uint64_t, int8_t>();
TestShouldNotFit<FixedEnumFor_uint64_t, int16_t>();
TestShouldNotFit<FixedEnumFor_uint64_t, int32_t>();
TestShouldNotFit<FixedEnumFor_uint64_t, int64_t>();
}
// -
template <typename T, typename U>
static constexpr void AssertSameTypeAndValue(T a, U b) {
static_assert(std::is_same_v<T, U>);
MOZ_ASSERT(a == b);
}
void TestUnderlyingValue() {
enum class Pet : int16_t { Cat, Dog, Fish };
enum class Plant { Flower, Tree, Vine };
AssertSameTypeAndValue(UnderlyingValue(Pet::Cat), int16_t(0));
AssertSameTypeAndValue(UnderlyingValue(Pet::Dog), int16_t(1));
AssertSameTypeAndValue(UnderlyingValue(Pet::Fish), int16_t(2));
AssertSameTypeAndValue(UnderlyingValue(Plant::Flower), int(0));
AssertSameTypeAndValue(UnderlyingValue(Plant::Tree), int(1));
AssertSameTypeAndValue(UnderlyingValue(Plant::Vine), int(2));
}
// -
int main() {
TestFitForTypes();
TestUnderlyingValue();
return 0;
}
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