| Index: third_party/WebKit/JavaScriptCore/wtf/TypeTraits.h
|
| ===================================================================
|
| --- third_party/WebKit/JavaScriptCore/wtf/TypeTraits.h (revision 9310)
|
| +++ third_party/WebKit/JavaScriptCore/wtf/TypeTraits.h (working copy)
|
| @@ -1,224 +1,133 @@
|
| - /*
|
| - * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
|
| - * Copyright (C) 2009 Google Inc. All rights reserved.
|
| - *
|
| - * This library is free software; you can redistribute it and/or
|
| - * modify it under the terms of the GNU Library General Public
|
| - * License as published by the Free Software Foundation; either
|
| - * version 2 of the License, or (at your option) any later version.
|
| - *
|
| - * This library is distributed in the hope that it will be useful,
|
| - * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
| - * Library General Public License for more details.
|
| - *
|
| - * You should have received a copy of the GNU Library General Public License
|
| - * along with this library; see the file COPYING.LIB. If not, write to
|
| - * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
| - * Boston, MA 02110-1301, USA.
|
| - *
|
| - */
|
| -
|
| -#ifndef TypeTraits_h
|
| -#define TypeTraits_h
|
| -
|
| -#include "Assertions.h"
|
| -
|
| -namespace WTF {
|
| -
|
| - // The following are provided in this file:
|
| - //
|
| - // IsInteger<T>::value
|
| - // IsPod<T>::value, see the definition for a note about its limitations
|
| - // IsConvertibleToInteger<T>::value
|
| - //
|
| - // IsSameType<T, U>::value
|
| - //
|
| - // RemovePointer<T>::Type
|
| - // RemoveConst<T>::Type
|
| - // RemoveVolatile<T>::Type
|
| - // RemoveConstVolatile<T>::Type
|
| - //
|
| - // Each is followed by COMPILE_ASSERT's which illustrate their usage and what they do.
|
| -
|
| - template<typename T> struct IsInteger { static const bool value = false; };
|
| - template<> struct IsInteger<bool> { static const bool value = true; };
|
| - template<> struct IsInteger<char> { static const bool value = true; };
|
| - template<> struct IsInteger<signed char> { static const bool value = true; };
|
| - template<> struct IsInteger<unsigned char> { static const bool value = true; };
|
| - template<> struct IsInteger<short> { static const bool value = true; };
|
| - template<> struct IsInteger<unsigned short> { static const bool value = true; };
|
| - template<> struct IsInteger<int> { static const bool value = true; };
|
| - template<> struct IsInteger<unsigned int> { static const bool value = true; };
|
| - template<> struct IsInteger<long> { static const bool value = true; };
|
| - template<> struct IsInteger<unsigned long> { static const bool value = true; };
|
| - template<> struct IsInteger<long long> { static const bool value = true; };
|
| - template<> struct IsInteger<unsigned long long> { static const bool value = true; };
|
| -#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
|
| - template<> struct IsInteger<wchar_t> { static const bool value = true; };
|
| -#endif
|
| -
|
| - COMPILE_ASSERT(IsInteger<bool>::value, WTF_IsInteger_bool_true);
|
| - COMPILE_ASSERT(IsInteger<char>::value, WTF_IsInteger_char_true);
|
| - COMPILE_ASSERT(IsInteger<signed char>::value, WTF_IsInteger_signed_char_true);
|
| - COMPILE_ASSERT(IsInteger<unsigned char>::value, WTF_IsInteger_unsigned_char_true);
|
| - COMPILE_ASSERT(IsInteger<short>::value, WTF_IsInteger_short_true);
|
| - COMPILE_ASSERT(IsInteger<unsigned short>::value, WTF_IsInteger_unsigned_short_true);
|
| - COMPILE_ASSERT(IsInteger<int>::value, WTF_IsInteger_int_true);
|
| - COMPILE_ASSERT(IsInteger<unsigned int>::value, WTF_IsInteger_unsigned_int_true);
|
| - COMPILE_ASSERT(IsInteger<long>::value, WTF_IsInteger_long_true);
|
| - COMPILE_ASSERT(IsInteger<unsigned long>::value, WTF_IsInteger_unsigned_long_true);
|
| - COMPILE_ASSERT(IsInteger<long long>::value, WTF_IsInteger_long_long_true);
|
| - COMPILE_ASSERT(IsInteger<unsigned long long>::value, WTF_IsInteger_unsigned_long_long_true);
|
| -#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
|
| - COMPILE_ASSERT(IsInteger<wchar_t>::value, WTF_IsInteger_wchar_t_true);
|
| -#endif
|
| - COMPILE_ASSERT(!IsInteger<char*>::value, WTF_IsInteger_char_pointer_false);
|
| - COMPILE_ASSERT(!IsInteger<const char*>::value, WTF_IsInteger_const_char_pointer_false);
|
| - COMPILE_ASSERT(!IsInteger<volatile char*>::value, WTF_IsInteger_volatile_char_pointer_false);
|
| - COMPILE_ASSERT(!IsInteger<double>::value, WTF_IsInteger_double_false);
|
| - COMPILE_ASSERT(!IsInteger<float>::value, WTF_IsInteger_float_false);
|
| -
|
| - // IsPod is misnamed as it doesn't cover all plain old data (pod) types.
|
| - // Specifically, it doesn't allow for enums or for structs.
|
| - template <typename T> struct IsPod { static const bool value = IsInteger<T>::value; };
|
| - template <> struct IsPod<float> { static const bool value = true; };
|
| - template <> struct IsPod<double> { static const bool value = true; };
|
| - template <> struct IsPod<long double> { static const bool value = true; };
|
| - template <typename P> struct IsPod<P*> { static const bool value = true; };
|
| -
|
| - COMPILE_ASSERT(IsPod<bool>::value, WTF_IsPod_bool_true);
|
| - COMPILE_ASSERT(IsPod<char>::value, WTF_IsPod_char_true);
|
| - COMPILE_ASSERT(IsPod<signed char>::value, WTF_IsPod_signed_char_true);
|
| - COMPILE_ASSERT(IsPod<unsigned char>::value, WTF_IsPod_unsigned_char_true);
|
| - COMPILE_ASSERT(IsPod<short>::value, WTF_IsPod_short_true);
|
| - COMPILE_ASSERT(IsPod<unsigned short>::value, WTF_IsPod_unsigned_short_true);
|
| - COMPILE_ASSERT(IsPod<int>::value, WTF_IsPod_int_true);
|
| - COMPILE_ASSERT(IsPod<unsigned int>::value, WTF_IsPod_unsigned_int_true);
|
| - COMPILE_ASSERT(IsPod<long>::value, WTF_IsPod_long_true);
|
| - COMPILE_ASSERT(IsPod<unsigned long>::value, WTF_IsPod_unsigned_long_true);
|
| - COMPILE_ASSERT(IsPod<long long>::value, WTF_IsPod_long_long_true);
|
| - COMPILE_ASSERT(IsPod<unsigned long long>::value, WTF_IsPod_unsigned_long_long_true);
|
| -#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
|
| - COMPILE_ASSERT(IsPod<wchar_t>::value, WTF_IsPod_wchar_t_true);
|
| -#endif
|
| - COMPILE_ASSERT(IsPod<char*>::value, WTF_IsPod_char_pointer_true);
|
| - COMPILE_ASSERT(IsPod<const char*>::value, WTF_IsPod_const_char_pointer_true);
|
| - COMPILE_ASSERT(IsPod<volatile char*>::value, WTF_IsPod_volatile_char_pointer_true);
|
| - COMPILE_ASSERT(IsPod<double>::value, WTF_IsPod_double_true);
|
| - COMPILE_ASSERT(IsPod<long double>::value, WTF_IsPod_long_double_true);
|
| - COMPILE_ASSERT(IsPod<float>::value, WTF_IsPod_float_true);
|
| - COMPILE_ASSERT(!IsPod<IsPod<bool> >::value, WTF_IsPod_struct_false);
|
| -
|
| - template<typename T> class IsConvertibleToInteger {
|
| - // Avoid "possible loss of data" warning when using Microsoft's C++ compiler
|
| - // by not converting int's to doubles.
|
| - template<bool performCheck, typename U> class IsConvertibleToDouble;
|
| - template<typename U> class IsConvertibleToDouble<false, U> {
|
| - public:
|
| - static const bool value = false;
|
| - };
|
| -
|
| - template<typename U> class IsConvertibleToDouble<true, U> {
|
| - typedef char YesType;
|
| - struct NoType {
|
| - char padding[8];
|
| - };
|
| -
|
| - static YesType floatCheck(long double);
|
| - static NoType floatCheck(...);
|
| - static T& t;
|
| - public:
|
| - static const bool value = sizeof(floatCheck(t)) == sizeof(YesType);
|
| - };
|
| -
|
| - public:
|
| - static const bool value = IsInteger<T>::value || IsConvertibleToDouble<!IsInteger<T>::value, T>::value;
|
| - };
|
| -
|
| - enum IsConvertibleToIntegerCheck { };
|
| - COMPILE_ASSERT(IsConvertibleToInteger<IsConvertibleToIntegerCheck>::value, WTF_IsConvertibleToInteger_enum_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<bool>::value, WTF_IsConvertibleToInteger_bool_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<char>::value, WTF_IsConvertibleToInteger_char_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<signed char>::value, WTF_IsConvertibleToInteger_signed_char_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<unsigned char>::value, WTF_IsConvertibleToInteger_unsigned_char_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<short>::value, WTF_IsConvertibleToInteger_short_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<unsigned short>::value, WTF_IsConvertibleToInteger_unsigned_short_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<int>::value, WTF_IsConvertibleToInteger_int_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<unsigned int>::value, WTF_IsConvertibleToInteger_unsigned_int_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<long>::value, WTF_IsConvertibleToInteger_long_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<unsigned long>::value, WTF_IsConvertibleToInteger_unsigned_long_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<long long>::value, WTF_IsConvertibleToInteger_long_long_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<unsigned long long>::value, WTF_IsConvertibleToInteger_unsigned_long_long_true);
|
| -#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
|
| - COMPILE_ASSERT(IsConvertibleToInteger<wchar_t>::value, WTF_IsConvertibleToInteger_wchar_t_true);
|
| -#endif
|
| - COMPILE_ASSERT(IsConvertibleToInteger<double>::value, WTF_IsConvertibleToInteger_double_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<long double>::value, WTF_IsConvertibleToInteger_long_double_true);
|
| - COMPILE_ASSERT(IsConvertibleToInteger<float>::value, WTF_IsConvertibleToInteger_float_true);
|
| - COMPILE_ASSERT(!IsConvertibleToInteger<char*>::value, WTF_IsConvertibleToInteger_char_pointer_false);
|
| - COMPILE_ASSERT(!IsConvertibleToInteger<const char*>::value, WTF_IsConvertibleToInteger_const_char_pointer_false);
|
| - COMPILE_ASSERT(!IsConvertibleToInteger<volatile char*>::value, WTF_IsConvertibleToInteger_volatile_char_pointer_false);
|
| - COMPILE_ASSERT(!IsConvertibleToInteger<IsConvertibleToInteger<bool> >::value, WTF_IsConvertibleToInteger_struct_false);
|
| -
|
| - template <typename T, typename U> struct IsSameType {
|
| - static const bool value = false;
|
| - };
|
| -
|
| - template <typename T> struct IsSameType<T, T> {
|
| - static const bool value = true;
|
| - };
|
| -
|
| - COMPILE_ASSERT((IsSameType<bool, bool>::value), WTF_IsSameType_bool_true);
|
| - COMPILE_ASSERT((IsSameType<int*, int*>::value), WTF_IsSameType_int_pointer_true);
|
| - COMPILE_ASSERT((!IsSameType<int, int*>::value), WTF_IsSameType_int_int_pointer_false);
|
| - COMPILE_ASSERT((!IsSameType<bool, const bool>::value), WTF_IsSameType_const_change_false);
|
| - COMPILE_ASSERT((!IsSameType<bool, volatile bool>::value), WTF_IsSameType_volatile_change_false);
|
| -
|
| - template <typename T> struct RemoveConst {
|
| - typedef T Type;
|
| - };
|
| -
|
| - template <typename T> struct RemoveConst<const T> {
|
| - typedef T Type;
|
| - };
|
| -
|
| - COMPILE_ASSERT((IsSameType<bool, RemoveConst<const bool>::Type>::value), WTF_test_RemoveConst_const_bool);
|
| - COMPILE_ASSERT((!IsSameType<bool, RemoveConst<volatile bool>::Type>::value), WTF_test_RemoveConst_volatile_bool);
|
| -
|
| - template <typename T> struct RemoveVolatile {
|
| - typedef T Type;
|
| - };
|
| -
|
| - template <typename T> struct RemoveVolatile<volatile T> {
|
| - typedef T Type;
|
| - };
|
| -
|
| - COMPILE_ASSERT((IsSameType<bool, RemoveVolatile<bool>::Type>::value), WTF_test_RemoveVolatile_bool);
|
| - COMPILE_ASSERT((!IsSameType<bool, RemoveVolatile<const bool>::Type>::value), WTF_test_RemoveVolatile_const_bool);
|
| - COMPILE_ASSERT((IsSameType<bool, RemoveVolatile<volatile bool>::Type>::value), WTF_test_RemoveVolatile_volatile_bool);
|
| -
|
| - template <typename T> struct RemoveConstVolatile {
|
| - typedef typename RemoveVolatile<typename RemoveConst<T>::Type>::Type Type;
|
| - };
|
| -
|
| - COMPILE_ASSERT((IsSameType<bool, RemoveConstVolatile<bool>::Type>::value), WTF_test_RemoveConstVolatile_bool);
|
| - COMPILE_ASSERT((IsSameType<bool, RemoveConstVolatile<const bool>::Type>::value), WTF_test_RemoveConstVolatile_const_bool);
|
| - COMPILE_ASSERT((IsSameType<bool, RemoveConstVolatile<volatile bool>::Type>::value), WTF_test_RemoveConstVolatile_volatile_bool);
|
| - COMPILE_ASSERT((IsSameType<bool, RemoveConstVolatile<const volatile bool>::Type>::value), WTF_test_RemoveConstVolatile_const_volatile_bool);
|
| -
|
| - template <typename T> struct RemovePointer {
|
| - typedef T Type;
|
| - };
|
| -
|
| - template <typename T> struct RemovePointer<T*> {
|
| - typedef T Type;
|
| - };
|
| -
|
| - COMPILE_ASSERT((IsSameType<int, RemovePointer<int>::Type>::value), WTF_Test_RemovePointer_int);
|
| - COMPILE_ASSERT((IsSameType<int, RemovePointer<int*>::Type>::value), WTF_Test_RemovePointer_int_pointer);
|
| - COMPILE_ASSERT((!IsSameType<int, RemovePointer<int**>::Type>::value), WTF_Test_RemovePointer_int_pointer_pointer);
|
| -
|
| -} // namespace WTF
|
| -
|
| -#endif // TypeTraits_h
|
| + /*
|
| + * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
|
| + * Copyright (C) 2009 Google Inc. All rights reserved.
|
| + *
|
| + * This library is free software; you can redistribute it and/or
|
| + * modify it under the terms of the GNU Library General Public
|
| + * License as published by the Free Software Foundation; either
|
| + * version 2 of the License, or (at your option) any later version.
|
| + *
|
| + * This library is distributed in the hope that it will be useful,
|
| + * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
| + * Library General Public License for more details.
|
| + *
|
| + * You should have received a copy of the GNU Library General Public License
|
| + * along with this library; see the file COPYING.LIB. If not, write to
|
| + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
| + * Boston, MA 02110-1301, USA.
|
| + *
|
| + */
|
| +
|
| +#ifndef TypeTraits_h
|
| +#define TypeTraits_h
|
| +
|
| +#include "Platform.h"
|
| +
|
| +namespace WTF {
|
| +
|
| + // The following are provided in this file:
|
| + //
|
| + // IsInteger<T>::value
|
| + // IsPod<T>::value, see the definition for a note about its limitations
|
| + // IsConvertibleToInteger<T>::value
|
| + //
|
| + // IsSameType<T, U>::value
|
| + //
|
| + // RemovePointer<T>::Type
|
| + // RemoveConst<T>::Type
|
| + // RemoveVolatile<T>::Type
|
| + // RemoveConstVolatile<T>::Type
|
| + //
|
| + // COMPILE_ASSERT's in TypeTraits.cpp illustrate their usage and what they do.
|
| +
|
| + template<typename T> struct IsInteger { static const bool value = false; };
|
| + template<> struct IsInteger<bool> { static const bool value = true; };
|
| + template<> struct IsInteger<char> { static const bool value = true; };
|
| + template<> struct IsInteger<signed char> { static const bool value = true; };
|
| + template<> struct IsInteger<unsigned char> { static const bool value = true; };
|
| + template<> struct IsInteger<short> { static const bool value = true; };
|
| + template<> struct IsInteger<unsigned short> { static const bool value = true; };
|
| + template<> struct IsInteger<int> { static const bool value = true; };
|
| + template<> struct IsInteger<unsigned int> { static const bool value = true; };
|
| + template<> struct IsInteger<long> { static const bool value = true; };
|
| + template<> struct IsInteger<unsigned long> { static const bool value = true; };
|
| + template<> struct IsInteger<long long> { static const bool value = true; };
|
| + template<> struct IsInteger<unsigned long long> { static const bool value = true; };
|
| +#if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
|
| + template<> struct IsInteger<wchar_t> { static const bool value = true; };
|
| +#endif
|
| +
|
| + // IsPod is misnamed as it doesn't cover all plain old data (pod) types.
|
| + // Specifically, it doesn't allow for enums or for structs.
|
| + template <typename T> struct IsPod { static const bool value = IsInteger<T>::value; };
|
| + template <> struct IsPod<float> { static const bool value = true; };
|
| + template <> struct IsPod<double> { static const bool value = true; };
|
| + template <> struct IsPod<long double> { static const bool value = true; };
|
| + template <typename P> struct IsPod<P*> { static const bool value = true; };
|
| +
|
| + template<typename T> class IsConvertibleToInteger {
|
| + // Avoid "possible loss of data" warning when using Microsoft's C++ compiler
|
| + // by not converting int's to doubles.
|
| + template<bool performCheck, typename U> class IsConvertibleToDouble;
|
| + template<typename U> class IsConvertibleToDouble<false, U> {
|
| + public:
|
| + static const bool value = false;
|
| + };
|
| +
|
| + template<typename U> class IsConvertibleToDouble<true, U> {
|
| + typedef char YesType;
|
| + struct NoType {
|
| + char padding[8];
|
| + };
|
| +
|
| + static YesType floatCheck(long double);
|
| + static NoType floatCheck(...);
|
| + static T& t;
|
| + public:
|
| + static const bool value = sizeof(floatCheck(t)) == sizeof(YesType);
|
| + };
|
| +
|
| + public:
|
| + static const bool value = IsInteger<T>::value || IsConvertibleToDouble<!IsInteger<T>::value, T>::value;
|
| + };
|
| +
|
| + template <typename T, typename U> struct IsSameType {
|
| + static const bool value = false;
|
| + };
|
| +
|
| + template <typename T> struct IsSameType<T, T> {
|
| + static const bool value = true;
|
| + };
|
| +
|
| + template <typename T> struct RemoveConst {
|
| + typedef T Type;
|
| + };
|
| +
|
| + template <typename T> struct RemoveConst<const T> {
|
| + typedef T Type;
|
| + };
|
| +
|
| + template <typename T> struct RemoveVolatile {
|
| + typedef T Type;
|
| + };
|
| +
|
| + template <typename T> struct RemoveVolatile<volatile T> {
|
| + typedef T Type;
|
| + };
|
| +
|
| + template <typename T> struct RemoveConstVolatile {
|
| + typedef typename RemoveVolatile<typename RemoveConst<T>::Type>::Type Type;
|
| + };
|
| +
|
| + template <typename T> struct RemovePointer {
|
| + typedef T Type;
|
| + };
|
| +
|
| + template <typename T> struct RemovePointer<T*> {
|
| + typedef T Type;
|
| + };
|
| +
|
| +} // namespace WTF
|
| +
|
| +#endif // TypeTraits_h
|
|
|
Chromium Code Reviews
