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1 /* | 1 /* |
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. | 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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163 } | 163 } |
164 #define reinterpret_cast_ptr reinterpret_cast | 164 #define reinterpret_cast_ptr reinterpret_cast |
165 #endif | 165 #endif |
166 | 166 |
167 namespace WTF { | 167 namespace WTF { |
168 | 168 |
169 /* | 169 /* |
170 * C++'s idea of a reinterpret_cast lacks sufficient cojones. | 170 * C++'s idea of a reinterpret_cast lacks sufficient cojones. |
171 */ | 171 */ |
172 template<typename TO, typename FROM> | 172 template<typename TO, typename FROM> |
173 inline TO bitwise_cast(FROM from) | 173 inline TO bitwiseCast(FROM from) |
174 { | 174 { |
175 static_assert(sizeof(TO) == sizeof(FROM), "WTF::bitwise_cast sizeof casted t
ypes should be equal"); | 175 static_assert(sizeof(TO) == sizeof(FROM), "WTF::bitwiseCast sizeof casted ty
pes should be equal"); |
176 union { | 176 union { |
177 FROM from; | 177 FROM from; |
178 TO to; | 178 TO to; |
179 } u; | 179 } u; |
180 u.from = from; | 180 u.from = from; |
181 return u.to; | 181 return u.to; |
182 } | 182 } |
183 | 183 |
184 template<typename To, typename From> | 184 template<typename To, typename From> |
185 inline To safeCast(From value) | 185 inline To safeCast(From value) |
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228 } // namespace WTF | 228 } // namespace WTF |
229 | 229 |
230 // This version of placement new omits a 0 check. | 230 // This version of placement new omits a 0 check. |
231 enum NotNullTag { NotNull }; | 231 enum NotNullTag { NotNull }; |
232 inline void* operator new(size_t, NotNullTag, void* location) | 232 inline void* operator new(size_t, NotNullTag, void* location) |
233 { | 233 { |
234 ASSERT(location); | 234 ASSERT(location); |
235 return location; | 235 return location; |
236 } | 236 } |
237 | 237 |
238 using WTF::bitwise_cast; | 238 using WTF::bitwiseCast; |
239 using WTF::safeCast; | 239 using WTF::safeCast; |
240 | 240 |
241 #endif // WTF_StdLibExtras_h | 241 #endif // WTF_StdLibExtras_h |
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