gecko-dev/mfbt/tests/TestTypeTraits.cpp

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C++

/* -*- 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/Assertions.h"
#include "mozilla/TypeTraits.h"
#define TEST_CV_QUALIFIERS(test, type, ...) \
test(type, __VA_ARGS__) \
test(const type, __VA_ARGS__) \
test(volatile type, __VA_ARGS__) \
test(const volatile type, __VA_ARGS__)
using mozilla::AddLvalueReference;
using mozilla::AddPointer;
using mozilla::AddRvalueReference;
using mozilla::Decay;
using mozilla::DeclVal;
using mozilla::IsFunction;
using mozilla::IsArray;
using mozilla::IsBaseOf;
using mozilla::IsClass;
using mozilla::IsConvertible;
using mozilla::IsDefaultConstructible;
using mozilla::IsDestructible;
using mozilla::IsEmpty;
using mozilla::IsLvalueReference;
using mozilla::IsPointer;
using mozilla::IsReference;
using mozilla::IsRvalueReference;
using mozilla::IsSame;
using mozilla::IsSigned;
using mozilla::IsUnsigned;
using mozilla::MakeSigned;
using mozilla::MakeUnsigned;
using mozilla::RemoveExtent;
using mozilla::RemovePointer;
static_assert(!IsFunction<int>::value,
"int is not a function type");
static_assert(IsFunction<void(int)>::value,
"void(int) is a function type");
static_assert(!IsFunction<void(*)(int)>::value,
"void(*)(int) is not a function type");
static_assert(!IsArray<bool>::value,
"bool not an array");
static_assert(IsArray<bool[]>::value,
"bool[] is an array");
static_assert(IsArray<bool[5]>::value,
"bool[5] is an array");
static_assert(!IsPointer<bool>::value,
"bool not a pointer");
static_assert(IsPointer<bool*>::value,
"bool* is a pointer");
static_assert(IsPointer<bool* const>::value,
"bool* const is a pointer");
static_assert(IsPointer<bool* volatile>::value,
"bool* volatile is a pointer");
static_assert(IsPointer<bool* const volatile>::value,
"bool* const volatile is a pointer");
static_assert(IsPointer<bool**>::value,
"bool** is a pointer");
static_assert(IsPointer<void (*)(void)>::value,
"void (*)(void) is a pointer");
struct IsPointerTest { bool m; void f(); };
static_assert(!IsPointer<IsPointerTest>::value,
"IsPointerTest not a pointer");
static_assert(IsPointer<IsPointerTest*>::value,
"IsPointerTest* is a pointer");
static_assert(!IsPointer<bool(IsPointerTest::*)>::value,
"bool(IsPointerTest::*) not a pointer");
static_assert(!IsPointer<void(IsPointerTest::*)(void)>::value,
"void(IsPointerTest::*)(void) not a pointer");
static_assert(!IsLvalueReference<bool>::value,
"bool not an lvalue reference");
static_assert(!IsLvalueReference<bool*>::value,
"bool* not an lvalue reference");
static_assert(IsLvalueReference<bool&>::value,
"bool& is an lvalue reference");
static_assert(!IsLvalueReference<bool&&>::value,
"bool&& not an lvalue reference");
static_assert(!IsLvalueReference<void>::value,
"void not an lvalue reference");
static_assert(!IsLvalueReference<void*>::value,
"void* not an lvalue reference");
static_assert(!IsLvalueReference<int>::value,
"int not an lvalue reference");
static_assert(!IsLvalueReference<int*>::value,
"int* not an lvalue reference");
static_assert(IsLvalueReference<int&>::value,
"int& is an lvalue reference");
static_assert(!IsLvalueReference<int&&>::value,
"int&& not an lvalue reference");
static_assert(!IsRvalueReference<bool>::value,
"bool not an rvalue reference");
static_assert(!IsRvalueReference<bool*>::value,
"bool* not an rvalue reference");
static_assert(!IsRvalueReference<bool&>::value,
"bool& not an rvalue reference");
static_assert(IsRvalueReference<bool&&>::value,
"bool&& is an rvalue reference");
static_assert(!IsRvalueReference<void>::value,
"void not an rvalue reference");
static_assert(!IsRvalueReference<void*>::value,
"void* not an rvalue reference");
static_assert(!IsRvalueReference<int>::value,
"int not an rvalue reference");
static_assert(!IsRvalueReference<int*>::value,
"int* not an rvalue reference");
static_assert(!IsRvalueReference<int&>::value,
"int& not an rvalue reference");
static_assert(IsRvalueReference<int&&>::value,
"int&& is an rvalue reference");
static_assert(!IsReference<bool>::value,
"bool not a reference");
static_assert(!IsReference<bool*>::value,
"bool* not a reference");
static_assert(IsReference<bool&>::value,
"bool& is a reference");
static_assert(IsReference<bool&&>::value,
"bool&& is a reference");
static_assert(!IsReference<void>::value,
"void not a reference");
static_assert(!IsReference<void*>::value,
"void* not a reference");
static_assert(!IsReference<int>::value,
"int not a reference");
static_assert(!IsReference<int*>::value,
"int* not a reference");
static_assert(IsReference<int&>::value,
"int& is a reference");
static_assert(IsReference<int&&>::value,
"int&& is a reference");
namespace CPlusPlus11IsMemberPointer {
using mozilla::IsMemberPointer;
struct S {};
union U {};
#define ASSERT_IS_MEMBER_POINTER(type, msg) \
static_assert(IsMemberPointer<type>::value, #type msg);
#define TEST_IS_MEMBER_POINTER(type) \
TEST_CV_QUALIFIERS(ASSERT_IS_MEMBER_POINTER, type, \
" is a member pointer type")
TEST_IS_MEMBER_POINTER(int S::*)
TEST_IS_MEMBER_POINTER(int U::*)
#undef TEST_IS_MEMBER_POINTER
#undef ASSERT_IS_MEMBER_POINTER
#define ASSERT_IS_NOT_MEMBER_POINTER(type, msg) \
static_assert(!IsMemberPointer<type>::value, #type msg);
#define TEST_IS_NOT_MEMBER_POINTER(type) \
TEST_CV_QUALIFIERS(ASSERT_IS_NOT_MEMBER_POINTER, type, \
" is not a member pointer type")
TEST_IS_NOT_MEMBER_POINTER(int*)
#undef TEST_IS_NOT_MEMBER_POINTER
#undef ASSERT_IS_NOT_MEMBER_POINTER
} // CPlusPlus11IsMemberPointer
namespace CPlusPlus11IsScalar {
using mozilla::IsScalar;
enum E {};
enum class EC {};
class C {};
struct S {};
union U {};
#define ASSERT_IS_SCALAR(type, msg) \
static_assert(IsScalar<type>::value, #type msg);
#define TEST_IS_SCALAR(type) \
TEST_CV_QUALIFIERS(ASSERT_IS_SCALAR, type, " is a scalar type")
TEST_IS_SCALAR(int)
TEST_IS_SCALAR(float)
TEST_IS_SCALAR(E)
TEST_IS_SCALAR(EC)
TEST_IS_SCALAR(S*)
TEST_IS_SCALAR(int S::*)
#undef TEST_IS_SCALAR
#undef ASSERT_IS_SCALAR
#define ASSERT_IS_NOT_SCALAR(type, msg) \
static_assert(!IsScalar<type>::value, #type msg);
#define TEST_IS_NOT_SCALAR(type) \
TEST_CV_QUALIFIERS(ASSERT_IS_NOT_SCALAR, type, " is not a scalar type")
TEST_IS_NOT_SCALAR(C)
TEST_IS_NOT_SCALAR(S)
TEST_IS_NOT_SCALAR(U)
#undef TEST_IS_NOT_SCALAR
#undef ASSERT_IS_NOT_SCALAR
} // CPlusPlus11IsScalar
struct S1 {};
union U1 { int mX; };
static_assert(!IsClass<int>::value,
"int isn't a class");
static_assert(IsClass<const S1>::value,
"S is a class");
static_assert(!IsClass<U1>::value,
"U isn't a class");
static_assert(!mozilla::IsEmpty<int>::value,
"not a class => not empty");
static_assert(!mozilla::IsEmpty<bool[5]>::value,
"not a class => not empty");
static_assert(!mozilla::IsEmpty<U1>::value,
"not a class => not empty");
struct E1 {};
struct E2 { int : 0; };
struct E3 : E1 {};
struct E4 : E2 {};
static_assert(IsEmpty<const volatile S1>::value,
"S should be empty");
static_assert(mozilla::IsEmpty<E1>::value &&
mozilla::IsEmpty<E2>::value &&
mozilla::IsEmpty<E3>::value &&
mozilla::IsEmpty<E4>::value,
"all empty");
union U2 { E1 e1; };
static_assert(!mozilla::IsEmpty<U2>::value,
"not a class => not empty");
struct NE1 { int mX; };
struct NE2 : virtual E1 {};
struct NE3 : E2 { virtual ~NE3() {} };
struct NE4 { virtual void f() {} };
static_assert(!mozilla::IsEmpty<NE1>::value &&
!mozilla::IsEmpty<NE2>::value &&
!mozilla::IsEmpty<NE3>::value &&
!mozilla::IsEmpty<NE4>::value,
"all empty");
static_assert(!IsSigned<bool>::value,
"bool shouldn't be signed");
static_assert(IsUnsigned<bool>::value,
"bool should be unsigned");
static_assert(!IsSigned<const bool>::value,
"const bool shouldn't be signed");
static_assert(IsUnsigned<const bool>::value,
"const bool should be unsigned");
static_assert(!IsSigned<volatile bool>::value,
"volatile bool shouldn't be signed");
static_assert(IsUnsigned<volatile bool>::value,
"volatile bool should be unsigned");
static_assert(!IsSigned<unsigned char>::value,
"unsigned char shouldn't be signed");
static_assert(IsUnsigned<unsigned char>::value,
"unsigned char should be unsigned");
static_assert(IsSigned<signed char>::value,
"signed char should be signed");
static_assert(!IsUnsigned<signed char>::value,
"signed char shouldn't be unsigned");
static_assert(!IsSigned<unsigned short>::value,
"unsigned short shouldn't be signed");
static_assert(IsUnsigned<unsigned short>::value,
"unsigned short should be unsigned");
static_assert(IsSigned<short>::value,
"short should be signed");
static_assert(!IsUnsigned<short>::value,
"short shouldn't be unsigned");
static_assert(!IsSigned<unsigned int>::value,
"unsigned int shouldn't be signed");
static_assert(IsUnsigned<unsigned int>::value,
"unsigned int should be unsigned");
static_assert(IsSigned<int>::value,
"int should be signed");
static_assert(!IsUnsigned<int>::value,
"int shouldn't be unsigned");
static_assert(!IsSigned<unsigned long>::value,
"unsigned long shouldn't be signed");
static_assert(IsUnsigned<unsigned long>::value,
"unsigned long should be unsigned");
static_assert(IsSigned<long>::value,
"long should be signed");
static_assert(!IsUnsigned<long>::value,
"long shouldn't be unsigned");
static_assert(IsSigned<float>::value,
"float should be signed");
static_assert(!IsUnsigned<float>::value,
"float shouldn't be unsigned");
static_assert(IsSigned<const float>::value,
"const float should be signed");
static_assert(!IsUnsigned<const float>::value,
"const float shouldn't be unsigned");
static_assert(IsSigned<double>::value,
"double should be signed");
static_assert(!IsUnsigned<double>::value,
"double shouldn't be unsigned");
static_assert(IsSigned<volatile double>::value,
"volatile double should be signed");
static_assert(!IsUnsigned<volatile double>::value,
"volatile double shouldn't be unsigned");
static_assert(IsSigned<long double>::value,
"long double should be signed");
static_assert(!IsUnsigned<long double>::value,
"long double shouldn't be unsigned");
static_assert(IsSigned<const volatile long double>::value,
"const volatile long double should be signed");
static_assert(!IsUnsigned<const volatile long double>::value,
"const volatile long double shouldn't be unsigned");
class NotIntConstructible
{
NotIntConstructible(int) = delete;
};
static_assert(!IsSigned<NotIntConstructible>::value,
"non-arithmetic types are not signed");
static_assert(!IsUnsigned<NotIntConstructible>::value,
"non-arithmetic types are not unsigned");
struct TrivialCtor0 {};
struct TrivialCtor1 { int mX; };
struct DefaultCtor0 { DefaultCtor0() {} };
struct DefaultCtor1 { DefaultCtor1() = default; };
struct DefaultCtor2 { DefaultCtor2() {} explicit DefaultCtor2(int) {} };
struct NoDefaultCtor0 { explicit NoDefaultCtor0(int) {} };
struct NoDefaultCtor1 { NoDefaultCtor1() = delete; };
class PrivateCtor0 { PrivateCtor0() {} };
class PrivateCtor1 { PrivateCtor1() = default; };
enum EnumCtor0 {};
enum EnumCtor1 : int {};
enum class EnumClassCtor0 {};
enum class EnumClassCtor1 : int {};
union UnionCtor0 {};
union UnionCtor1 { int mX; };
union UnionCustomCtor0 { explicit UnionCustomCtor0(int) {} };
union UnionCustomCtor1
{
int mX;
explicit UnionCustomCtor1(int aX) : mX(aX) {}
};
static_assert(IsDefaultConstructible<int>::value,
"integral type is default-constructible");
static_assert(IsDefaultConstructible<TrivialCtor0>::value,
"trivial constructor class 0 is default-constructible");
static_assert(IsDefaultConstructible<TrivialCtor1>::value,
"trivial constructor class 1 is default-constructible");
static_assert(IsDefaultConstructible<DefaultCtor0>::value,
"default constructor class 0 is default-constructible");
static_assert(IsDefaultConstructible<DefaultCtor1>::value,
"default constructor class 1 is default-constructible");
static_assert(IsDefaultConstructible<DefaultCtor2>::value,
"default constructor class 2 is default-constructible");
static_assert(!IsDefaultConstructible<NoDefaultCtor0>::value,
"no default constructor class is not default-constructible");
static_assert(!IsDefaultConstructible<NoDefaultCtor1>::value,
"deleted default constructor class is not default-constructible");
static_assert(!IsDefaultConstructible<PrivateCtor0>::value,
"private default constructor class 0 is not default-constructible");
static_assert(!IsDefaultConstructible<PrivateCtor1>::value,
"private default constructor class 1 is not default-constructible");
static_assert(IsDefaultConstructible<EnumCtor0>::value,
"enum constructor 0 is default-constructible");
static_assert(IsDefaultConstructible<EnumCtor1>::value,
"enum constructor 1 is default-constructible");
static_assert(IsDefaultConstructible<EnumClassCtor0>::value,
"enum class constructor 0 is default-constructible");
static_assert(IsDefaultConstructible<EnumClassCtor1>::value,
"enum class constructor 1 is default-constructible");
static_assert(IsDefaultConstructible<UnionCtor0>::value,
"union constructor 0 is default-constructible");
static_assert(IsDefaultConstructible<UnionCtor1>::value,
"union constructor 1 is default-constructible");
static_assert(!IsDefaultConstructible<UnionCustomCtor0>::value,
"union with custom 1-arg constructor 0 is not default-constructible");
static_assert(!IsDefaultConstructible<UnionCustomCtor1>::value,
"union with custom 1-arg constructor 1 is not default-constructible");
class PublicDestructible
{
public:
~PublicDestructible();
};
class PrivateDestructible
{
private:
~PrivateDestructible();
};
class TrivialDestructible
{
};
static_assert(IsDestructible<PublicDestructible>::value,
"public destructible class is destructible");
static_assert(!IsDestructible<PrivateDestructible>::value,
"private destructible class is not destructible");
static_assert(IsDestructible<TrivialDestructible>::value,
"trivial destructible class is destructible");
namespace CPlusPlus11IsBaseOf {
// Adapted from C++11 § 20.9.6.
struct B {};
struct B1 : B {};
struct B2 : B {};
struct D : private B1, private B2 {};
static void
StandardIsBaseOfTests()
{
static_assert((IsBaseOf<B, D>::value) == true,
"IsBaseOf fails on diamond");
static_assert((IsBaseOf<const B, D>::value) == true,
"IsBaseOf fails on diamond plus constness change");
static_assert((IsBaseOf<B, const D>::value) == true,
"IsBaseOf fails on diamond plus constness change");
static_assert((IsBaseOf<B, const B>::value) == true,
"IsBaseOf fails on constness change");
static_assert((IsBaseOf<D, B>::value) == false,
"IsBaseOf got the direction of inheritance wrong");
static_assert((IsBaseOf<B&, D&>::value) == false,
"IsBaseOf should return false on references");
static_assert((IsBaseOf<B[3], D[3]>::value) == false,
"IsBaseOf should return false on arrays");
// We fail at the following test. To fix it, we need to specialize IsBaseOf
// for all built-in types.
// static_assert((IsBaseOf<int, int>::value) == false);
}
} /* namespace CPlusPlus11IsBaseOf */
class A { };
class B : public A { };
class C : private A { };
class D { };
class E : public A { };
class F : public B, public E { };
static void
TestIsBaseOf()
{
static_assert((IsBaseOf<A, B>::value),
"A is a base of B");
static_assert((!IsBaseOf<B, A>::value),
"B is not a base of A");
static_assert((IsBaseOf<A, C>::value),
"A is a base of C");
static_assert((!IsBaseOf<C, A>::value),
"C is not a base of A");
static_assert((IsBaseOf<A, F>::value),
"A is a base of F");
static_assert((!IsBaseOf<F, A>::value),
"F is not a base of A");
static_assert((!IsBaseOf<A, D>::value),
"A is not a base of D");
static_assert((!IsBaseOf<D, A>::value),
"D is not a base of A");
static_assert((IsBaseOf<B, B>::value),
"B is the same as B (and therefore, a base of B)");
}
class ExplicitCopyConstructor {
explicit ExplicitCopyConstructor(const ExplicitCopyConstructor&) = default;
};
static void
TestIsConvertible()
{
// Pointer type convertibility
static_assert((IsConvertible<A*, A*>::value),
"A* should convert to A*");
static_assert((IsConvertible<B*, A*>::value),
"B* should convert to A*");
static_assert((!IsConvertible<A*, B*>::value),
"A* shouldn't convert to B*");
static_assert((!IsConvertible<A*, C*>::value),
"A* shouldn't convert to C*");
static_assert((!IsConvertible<A*, D*>::value),
"A* shouldn't convert to unrelated D*");
static_assert((!IsConvertible<D*, A*>::value),
"D* shouldn't convert to unrelated A*");
// Instance type convertibility
static_assert((IsConvertible<A, A>::value),
"A is A");
static_assert((IsConvertible<B, A>::value),
"B converts to A");
static_assert((!IsConvertible<D, A>::value),
"D and A are unrelated");
static_assert((!IsConvertible<A, D>::value),
"A and D are unrelated");
static_assert(IsConvertible<void, void>::value, "void is void");
static_assert(!IsConvertible<A, void>::value, "A shouldn't convert to void");
static_assert(!IsConvertible<void, B>::value, "void shouldn't convert to B");
static_assert(!IsConvertible<const ExplicitCopyConstructor&,
ExplicitCopyConstructor>::value,
"IsConvertible should test for implicit convertibility");
// These cases seem to require C++11 support to properly implement them, so
// for now just disable them.
//static_assert((!IsConvertible<C*, A*>::value),
// "C* shouldn't convert to A* (private inheritance)");
//static_assert((!IsConvertible<C, A>::value),
// "C doesn't convert to A (private inheritance)");
}
static_assert(IsSame<AddLvalueReference<int>::Type, int&>::value,
"not adding & to int correctly");
static_assert(IsSame<AddLvalueReference<volatile int&>::Type, volatile int&>::value,
"not adding & to volatile int& correctly");
static_assert(IsSame<AddLvalueReference<void*>::Type, void*&>::value,
"not adding & to void* correctly");
static_assert(IsSame<AddLvalueReference<void>::Type, void>::value,
"void shouldn't be transformed by AddLvalueReference");
static_assert(IsSame<AddLvalueReference<struct S1&&>::Type, struct S1&>::value,
"not reference-collapsing struct S1&& & to struct S1& correctly");
static_assert(IsSame<AddRvalueReference<int>::Type, int&&>::value,
"not adding && to int correctly");
static_assert(IsSame<AddRvalueReference<volatile int&>::Type, volatile int&>::value,
"not adding && to volatile int& correctly");
static_assert(IsSame<AddRvalueReference<const int&&>::Type, const int&&>::value,
"not adding && to volatile int& correctly");
static_assert(IsSame<AddRvalueReference<void*>::Type, void*&&>::value,
"not adding && to void* correctly");
static_assert(IsSame<AddRvalueReference<void>::Type, void>::value,
"void shouldn't be transformed by AddRvalueReference");
static_assert(IsSame<AddRvalueReference<struct S1&>::Type, struct S1&>::value,
"not reference-collapsing struct S1& && to struct S1& correctly");
struct TestWithDefaultConstructor
{
int foo() const { return 0; }
};
struct TestWithNoDefaultConstructor
{
explicit TestWithNoDefaultConstructor(int) {}
int foo() const { return 1; }
};
static_assert(IsSame<decltype(TestWithDefaultConstructor().foo()), int>::value,
"decltype should work using a struct with a default constructor");
static_assert(IsSame<decltype(DeclVal<TestWithDefaultConstructor>().foo()), int>::value,
"decltype should work using a DeclVal'd struct with a default constructor");
static_assert(IsSame<decltype(DeclVal<TestWithNoDefaultConstructor>().foo()), int>::value,
"decltype should work using a DeclVal'd struct without a default constructor");
static_assert(IsSame<MakeSigned<const unsigned char>::Type, const signed char>::value,
"const unsigned char won't signify correctly");
static_assert(IsSame<MakeSigned<volatile unsigned short>::Type, volatile signed short>::value,
"volatile unsigned short won't signify correctly");
static_assert(IsSame<MakeSigned<const volatile unsigned int>::Type, const volatile signed int>::value,
"const volatile unsigned int won't signify correctly");
static_assert(IsSame<MakeSigned<unsigned long>::Type, signed long>::value,
"unsigned long won't signify correctly");
static_assert(IsSame<MakeSigned<const signed char>::Type, const signed char>::value,
"const signed char won't signify correctly");
static_assert(IsSame<MakeSigned<volatile signed short>::Type, volatile signed short>::value,
"volatile signed short won't signify correctly");
static_assert(IsSame<MakeSigned<const volatile signed int>::Type, const volatile signed int>::value,
"const volatile signed int won't signify correctly");
static_assert(IsSame<MakeSigned<signed long>::Type, signed long>::value,
"signed long won't signify correctly");
static_assert(IsSame<MakeSigned<char>::Type, signed char>::value,
"char won't signify correctly");
static_assert(IsSame<MakeSigned<volatile char>::Type, volatile signed char>::value,
"volatile char won't signify correctly");
static_assert(IsSame<MakeSigned<const char>::Type, const signed char>::value,
"const char won't signify correctly");
static_assert(IsSame<MakeUnsigned<const signed char>::Type, const unsigned char>::value,
"const signed char won't unsignify correctly");
static_assert(IsSame<MakeUnsigned<volatile signed short>::Type, volatile unsigned short>::value,
"volatile signed short won't unsignify correctly");
static_assert(IsSame<MakeUnsigned<const volatile signed int>::Type, const volatile unsigned int>::value,
"const volatile signed int won't unsignify correctly");
static_assert(IsSame<MakeUnsigned<signed long>::Type, unsigned long>::value,
"signed long won't unsignify correctly");
static_assert(IsSame<MakeUnsigned<const unsigned char>::Type, const unsigned char>::value,
"const unsigned char won't unsignify correctly");
static_assert(IsSame<MakeUnsigned<volatile unsigned short>::Type, volatile unsigned short>::value,
"volatile unsigned short won't unsignify correctly");
static_assert(IsSame<MakeUnsigned<const volatile unsigned int>::Type, const volatile unsigned int>::value,
"const volatile unsigned int won't unsignify correctly");
static_assert(IsSame<MakeUnsigned<unsigned long>::Type, unsigned long>::value,
"signed long won't unsignify correctly");
static_assert(IsSame<MakeUnsigned<char>::Type, unsigned char>::value,
"char won't unsignify correctly");
static_assert(IsSame<MakeUnsigned<volatile char>::Type, volatile unsigned char>::value,
"volatile char won't unsignify correctly");
static_assert(IsSame<MakeUnsigned<const char>::Type, const unsigned char>::value,
"const char won't unsignify correctly");
static_assert(IsSame<RemoveExtent<int>::Type, int>::value,
"removing extent from non-array must return the non-array");
static_assert(IsSame<RemoveExtent<const int[]>::Type, const int>::value,
"removing extent from unknown-bound array must return element type");
static_assert(IsSame<RemoveExtent<volatile int[5]>::Type, volatile int>::value,
"removing extent from known-bound array must return element type");
static_assert(IsSame<RemoveExtent<long[][17]>::Type, long[17]>::value,
"removing extent from multidimensional array must return element type");
struct TestRemovePointer { bool m; void f(); };
static_assert(IsSame<RemovePointer<int>::Type, int>::value,
"removing pointer from int must return int");
static_assert(IsSame<RemovePointer<int*>::Type, int>::value,
"removing pointer from int* must return int");
static_assert(IsSame<RemovePointer<int* const>::Type, int>::value,
"removing pointer from int* const must return int");
static_assert(IsSame<RemovePointer<int* volatile>::Type, int>::value,
"removing pointer from int* volatile must return int");
static_assert(IsSame<RemovePointer<const long*>::Type, const long>::value,
"removing pointer from const long* must return const long");
static_assert(IsSame<RemovePointer<void* const>::Type, void>::value,
"removing pointer from void* const must return void");
static_assert(IsSame<RemovePointer<void (TestRemovePointer::*)()>::Type,
void (TestRemovePointer::*)()>::value,
"removing pointer from void (S::*)() must return void (S::*)()");
static_assert(IsSame<RemovePointer<void (*)()>::Type, void()>::value,
"removing pointer from void (*)() must return void()");
static_assert(IsSame<RemovePointer<bool TestRemovePointer::*>::Type,
bool TestRemovePointer::*>::value,
"removing pointer from bool S::* must return bool S::*");
static_assert(IsSame<AddPointer<int>::Type, int*>::value,
"adding pointer to int must return int*");
static_assert(IsSame<AddPointer<int*>::Type, int**>::value,
"adding pointer to int* must return int**");
static_assert(IsSame<AddPointer<int&>::Type, int*>::value,
"adding pointer to int& must return int*");
static_assert(IsSame<AddPointer<int* const>::Type, int* const*>::value,
"adding pointer to int* const must return int* const*");
static_assert(IsSame<AddPointer<int* volatile>::Type, int* volatile*>::value,
"adding pointer to int* volatile must return int* volatile*");
static_assert(IsSame<Decay<int>::Type, int>::value,
"decaying int must return int");
static_assert(IsSame<Decay<int*>::Type, int*>::value,
"decaying int* must return int*");
static_assert(IsSame<Decay<int* const>::Type, int*>::value,
"decaying int* const must return int*");
static_assert(IsSame<Decay<int* volatile>::Type, int*>::value,
"decaying int* volatile must return int*");
static_assert(IsSame<Decay<int&>::Type, int>::value,
"decaying int& must return int");
static_assert(IsSame<Decay<const int&>::Type, int>::value,
"decaying const int& must return int");
static_assert(IsSame<Decay<int&&>::Type, int>::value,
"decaying int&& must return int");
static_assert(IsSame<Decay<int[1]>::Type, int*>::value,
"decaying int[1] must return int*");
static_assert(IsSame<Decay<void(int)>::Type, void(*)(int)>::value,
"decaying void(int) must return void(*)(int)");
/*
* Android's broken [u]intptr_t inttype macros are broken because its PRI*PTR
* macros are defined as "ld", but sizeof(long) is 8 and sizeof(intptr_t)
* is 4 on 32-bit Android. We redefine Android's PRI*PTR macros in
* IntegerPrintfMacros.h and assert here that our new definitions match the
* actual type sizes seen at compile time.
*/
#if defined(ANDROID) && !defined(__LP64__)
static_assert(mozilla::IsSame<int, intptr_t>::value,
"emulated PRI[di]PTR definitions will be wrong");
static_assert(mozilla::IsSame<unsigned int, uintptr_t>::value,
"emulated PRI[ouxX]PTR definitions will be wrong");
#endif
int
main()
{
CPlusPlus11IsBaseOf::StandardIsBaseOfTests();
TestIsBaseOf();
TestIsConvertible();
return 0;
}