1 /*
2 * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
3 * Copyright (C) 2009, 2010 Google Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB.  If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 *
20 */
21
22#include "config.h"
23#include "TypeTraits.h"
24
25#include "Assertions.h"
26
27namespace WTF {
28
29COMPILE_ASSERT(IsInteger<bool>::value, WTF_IsInteger_bool_true);
30COMPILE_ASSERT(IsInteger<char>::value, WTF_IsInteger_char_true);
31COMPILE_ASSERT(IsInteger<signed char>::value, WTF_IsInteger_signed_char_true);
32COMPILE_ASSERT(IsInteger<unsigned char>::value, WTF_IsInteger_unsigned_char_true);
33COMPILE_ASSERT(IsInteger<short>::value, WTF_IsInteger_short_true);
34COMPILE_ASSERT(IsInteger<unsigned short>::value, WTF_IsInteger_unsigned_short_true);
35COMPILE_ASSERT(IsInteger<int>::value, WTF_IsInteger_int_true);
36COMPILE_ASSERT(IsInteger<unsigned int>::value, WTF_IsInteger_unsigned_int_true);
37COMPILE_ASSERT(IsInteger<long>::value, WTF_IsInteger_long_true);
38COMPILE_ASSERT(IsInteger<unsigned long>::value, WTF_IsInteger_unsigned_long_true);
39COMPILE_ASSERT(IsInteger<long long>::value, WTF_IsInteger_long_long_true);
40COMPILE_ASSERT(IsInteger<unsigned long long>::value, WTF_IsInteger_unsigned_long_long_true);
41#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
42COMPILE_ASSERT(IsInteger<wchar_t>::value, WTF_IsInteger_wchar_t_true);
43#endif
44COMPILE_ASSERT(!IsInteger<char*>::value, WTF_IsInteger_char_pointer_false);
45COMPILE_ASSERT(!IsInteger<const char*>::value, WTF_IsInteger_const_char_pointer_false);
46COMPILE_ASSERT(!IsInteger<volatile char*>::value, WTF_IsInteger_volatile_char_pointer_false);
47COMPILE_ASSERT(!IsInteger<double>::value, WTF_IsInteger_double_false);
48COMPILE_ASSERT(!IsInteger<float>::value, WTF_IsInteger_float_false);
49
50COMPILE_ASSERT(IsFloatingPoint<float>::value, WTF_IsFloatingPoint_float_true);
51COMPILE_ASSERT(IsFloatingPoint<double>::value, WTF_IsFloatingPoint_double_true);
52COMPILE_ASSERT(IsFloatingPoint<long double>::value, WTF_IsFloatingPoint_long_double_true);
53COMPILE_ASSERT(!IsFloatingPoint<int>::value, WTF_IsFloatingPoint_int_false);
54
55COMPILE_ASSERT(IsPod<bool>::value, WTF_IsPod_bool_true);
56COMPILE_ASSERT(IsPod<char>::value, WTF_IsPod_char_true);
57COMPILE_ASSERT(IsPod<signed char>::value, WTF_IsPod_signed_char_true);
58COMPILE_ASSERT(IsPod<unsigned char>::value, WTF_IsPod_unsigned_char_true);
59COMPILE_ASSERT(IsPod<short>::value, WTF_IsPod_short_true);
60COMPILE_ASSERT(IsPod<unsigned short>::value, WTF_IsPod_unsigned_short_true);
61COMPILE_ASSERT(IsPod<int>::value, WTF_IsPod_int_true);
62COMPILE_ASSERT(IsPod<unsigned int>::value, WTF_IsPod_unsigned_int_true);
63COMPILE_ASSERT(IsPod<long>::value, WTF_IsPod_long_true);
64COMPILE_ASSERT(IsPod<unsigned long>::value, WTF_IsPod_unsigned_long_true);
65COMPILE_ASSERT(IsPod<long long>::value, WTF_IsPod_long_long_true);
66COMPILE_ASSERT(IsPod<unsigned long long>::value, WTF_IsPod_unsigned_long_long_true);
67#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
68COMPILE_ASSERT(IsPod<wchar_t>::value, WTF_IsPod_wchar_t_true);
69#endif
70COMPILE_ASSERT(IsPod<char*>::value, WTF_IsPod_char_pointer_true);
71COMPILE_ASSERT(IsPod<const char*>::value, WTF_IsPod_const_char_pointer_true);
72COMPILE_ASSERT(IsPod<volatile char*>::value, WTF_IsPod_volatile_char_pointer_true);
73COMPILE_ASSERT(IsPod<double>::value, WTF_IsPod_double_true);
74COMPILE_ASSERT(IsPod<long double>::value, WTF_IsPod_long_double_true);
75COMPILE_ASSERT(IsPod<float>::value, WTF_IsPod_float_true);
76COMPILE_ASSERT(!IsPod<IsPod<bool> >::value, WTF_IsPod_struct_false);
77
78enum IsConvertibleToIntegerCheck { };
79COMPILE_ASSERT(IsConvertibleToInteger<IsConvertibleToIntegerCheck>::value, WTF_IsConvertibleToInteger_enum_true);
80COMPILE_ASSERT(IsConvertibleToInteger<bool>::value, WTF_IsConvertibleToInteger_bool_true);
81COMPILE_ASSERT(IsConvertibleToInteger<char>::value, WTF_IsConvertibleToInteger_char_true);
82COMPILE_ASSERT(IsConvertibleToInteger<signed char>::value, WTF_IsConvertibleToInteger_signed_char_true);
83COMPILE_ASSERT(IsConvertibleToInteger<unsigned char>::value, WTF_IsConvertibleToInteger_unsigned_char_true);
84COMPILE_ASSERT(IsConvertibleToInteger<short>::value, WTF_IsConvertibleToInteger_short_true);
85COMPILE_ASSERT(IsConvertibleToInteger<unsigned short>::value, WTF_IsConvertibleToInteger_unsigned_short_true);
86COMPILE_ASSERT(IsConvertibleToInteger<int>::value, WTF_IsConvertibleToInteger_int_true);
87COMPILE_ASSERT(IsConvertibleToInteger<unsigned int>::value, WTF_IsConvertibleToInteger_unsigned_int_true);
88COMPILE_ASSERT(IsConvertibleToInteger<long>::value, WTF_IsConvertibleToInteger_long_true);
89COMPILE_ASSERT(IsConvertibleToInteger<unsigned long>::value, WTF_IsConvertibleToInteger_unsigned_long_true);
90COMPILE_ASSERT(IsConvertibleToInteger<long long>::value, WTF_IsConvertibleToInteger_long_long_true);
91COMPILE_ASSERT(IsConvertibleToInteger<unsigned long long>::value, WTF_IsConvertibleToInteger_unsigned_long_long_true);
92#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
93COMPILE_ASSERT(IsConvertibleToInteger<wchar_t>::value, WTF_IsConvertibleToInteger_wchar_t_true);
94#endif
95COMPILE_ASSERT(IsConvertibleToInteger<double>::value, WTF_IsConvertibleToInteger_double_true);
96COMPILE_ASSERT(IsConvertibleToInteger<long double>::value, WTF_IsConvertibleToInteger_long_double_true);
97COMPILE_ASSERT(IsConvertibleToInteger<float>::value, WTF_IsConvertibleToInteger_float_true);
98COMPILE_ASSERT(!IsConvertibleToInteger<char*>::value, WTF_IsConvertibleToInteger_char_pointer_false);
99COMPILE_ASSERT(!IsConvertibleToInteger<const char*>::value, WTF_IsConvertibleToInteger_const_char_pointer_false);
100COMPILE_ASSERT(!IsConvertibleToInteger<volatile char*>::value, WTF_IsConvertibleToInteger_volatile_char_pointer_false);
101COMPILE_ASSERT(!IsConvertibleToInteger<IsConvertibleToInteger<bool> >::value, WTF_IsConvertibleToInteger_struct_false);
102
103COMPILE_ASSERT((IsPointerConvertible<int, int>::Value), WTF_IsPointerConvertible_same_type_true);
104COMPILE_ASSERT((!IsPointerConvertible<int, unsigned>::Value), WTF_IsPointerConvertible_int_to_unsigned_false);
105COMPILE_ASSERT((IsPointerConvertible<int, const int>::Value), WTF_IsPointerConvertible_int_to_const_int_true);
106COMPILE_ASSERT((!IsPointerConvertible<const int, int>::Value), WTF_IsPointerConvertible_const_int_to_int_false);
107COMPILE_ASSERT((IsPointerConvertible<int, volatile int>::Value), WTF_IsPointerConvertible_int_to_volatile_int_true);
108
109COMPILE_ASSERT((IsSameType<bool, bool>::value), WTF_IsSameType_bool_true);
110COMPILE_ASSERT((IsSameType<int*, int*>::value), WTF_IsSameType_int_pointer_true);
111COMPILE_ASSERT((!IsSameType<int, int*>::value), WTF_IsSameType_int_int_pointer_false);
112COMPILE_ASSERT((!IsSameType<bool, const bool>::value), WTF_IsSameType_const_change_false);
113COMPILE_ASSERT((!IsSameType<bool, volatile bool>::value), WTF_IsSameType_volatile_change_false);
114
115template <typename T>
116class TestBaseClass {
117};
118
119class TestDerivedClass : public TestBaseClass<int> {
120};
121
122COMPILE_ASSERT((IsSubclass<TestDerivedClass, TestBaseClass<int> >::value), WTF_Test_IsSubclass_Derived_From_Base);
123COMPILE_ASSERT((!IsSubclass<TestBaseClass<int>, TestDerivedClass>::value), WTF_Test_IsSubclass_Base_From_Derived);
124COMPILE_ASSERT((IsSubclassOfTemplate<TestDerivedClass, TestBaseClass>::value), WTF_Test_IsSubclassOfTemplate_Base_From_Derived);
125COMPILE_ASSERT((IsSameType<RemoveTemplate<TestBaseClass<int>, TestBaseClass>::Type, int>::value), WTF_Test_RemoveTemplate);
126COMPILE_ASSERT((IsSameType<RemoveTemplate<int, TestBaseClass>::Type, int>::value), WTF_Test_RemoveTemplate_WithoutTemplate);
127COMPILE_ASSERT((IsPointerConvertible<TestDerivedClass, TestBaseClass<int> >::Value), WTF_Test_IsPointerConvertible_Derived_To_Base);
128COMPILE_ASSERT((!IsPointerConvertible<TestBaseClass<int>, TestDerivedClass>::Value), WTF_Test_IsPointerConvertible_Base_To_Derived);
129
130COMPILE_ASSERT((IsSameType<bool, RemoveConst<const bool>::Type>::value), WTF_test_RemoveConst_const_bool);
131COMPILE_ASSERT((!IsSameType<bool, RemoveConst<volatile bool>::Type>::value), WTF_test_RemoveConst_volatile_bool);
132
133COMPILE_ASSERT((IsSameType<bool, RemoveVolatile<bool>::Type>::value), WTF_test_RemoveVolatile_bool);
134COMPILE_ASSERT((!IsSameType<bool, RemoveVolatile<const bool>::Type>::value), WTF_test_RemoveVolatile_const_bool);
135COMPILE_ASSERT((IsSameType<bool, RemoveVolatile<volatile bool>::Type>::value), WTF_test_RemoveVolatile_volatile_bool);
136
137COMPILE_ASSERT((IsSameType<bool, RemoveConstVolatile<bool>::Type>::value), WTF_test_RemoveConstVolatile_bool);
138COMPILE_ASSERT((IsSameType<bool, RemoveConstVolatile<const bool>::Type>::value), WTF_test_RemoveConstVolatile_const_bool);
139COMPILE_ASSERT((IsSameType<bool, RemoveConstVolatile<volatile bool>::Type>::value), WTF_test_RemoveConstVolatile_volatile_bool);
140COMPILE_ASSERT((IsSameType<bool, RemoveConstVolatile<const volatile bool>::Type>::value), WTF_test_RemoveConstVolatile_const_volatile_bool);
141
142COMPILE_ASSERT((IsSameType<int, RemovePointer<int>::Type>::value), WTF_Test_RemovePointer_int);
143COMPILE_ASSERT((IsSameType<int, RemovePointer<int*>::Type>::value), WTF_Test_RemovePointer_int_pointer);
144COMPILE_ASSERT((!IsSameType<int, RemovePointer<int**>::Type>::value), WTF_Test_RemovePointer_int_pointer_pointer);
145
146COMPILE_ASSERT((IsSameType<int, RemoveReference<int>::Type>::value), WTF_Test_RemoveReference_int);
147COMPILE_ASSERT((IsSameType<int, RemoveReference<int&>::Type>::value), WTF_Test_RemoveReference_int_reference);
148
149
150typedef int IntArray[];
151typedef int IntArraySized[4];
152
153COMPILE_ASSERT((IsArray<IntArray>::value), WTF_Test_IsArray_int_array);
154COMPILE_ASSERT((IsArray<IntArraySized>::value), WTF_Test_IsArray_int_sized_array);
155
156COMPILE_ASSERT((IsSameType<int, RemoveExtent<IntArray>::Type>::value), WTF_Test_RemoveExtent_int_array);
157COMPILE_ASSERT((IsSameType<int, RemoveExtent<IntArraySized>::Type>::value), WTF_Test_RemoveReference_int_sized_array);
158
159} // namespace WTF
160