1 #ifndef __DALI_COMPILE_TIME_ASSERT_H__
2 #define __DALI_COMPILE_TIME_ASSERT_H__
5 * Copyright (c) 2015 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <dali/public-api/common/dali-common.h>
30 * @addtogroup dali-core-common
34 template <bool x> struct CompileTimeAssertBool; ///< Bool Template to test condition
35 template <> struct CompileTimeAssertBool<true> {}; ///< Specialize for true, but not for false
37 template<int x> struct CompileTimeAssertInt {}; ///< Template to wrap conditional template CompileTimeAsserBool
40 * @brief Use DALI_COMPILE_TIME_ASSERT to test expressions at compile time.
42 * If x is false, then 'sizeof' will be attempted with incomplete type.
44 #define DALI_COMPILE_TIME_ASSERT( x ) typedef CompileTimeAssertInt< sizeof( CompileTimeAssertBool< ( x ) > ) > CompileTimeAssertType __attribute__((__unused__))
51 #endif // __DALI_COMPILE_TIME_ASSERT_H__