1 // Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 #ifndef __ESP_ASSERT_H__ 15 #define __ESP_ASSERT_H__ 16 17 #include "assert.h" 18 19 #ifndef __cplusplus 20 #define ESP_STATIC_ASSERT _Static_assert 21 #else // __cplusplus 22 #define ESP_STATIC_ASSERT static_assert 23 #endif // __cplusplus 24 25 /* Assert at compile time if possible, runtime otherwise */ 26 #ifndef __cplusplus 27 /* __builtin_choose_expr() is only in C, makes this a lot cleaner */ 28 #define TRY_STATIC_ASSERT(CONDITION, MSG) do { \ 29 ESP_STATIC_ASSERT(__builtin_choose_expr(__builtin_constant_p(CONDITION), (CONDITION), 1), #MSG); \ 30 assert(#MSG && (CONDITION)); \ 31 } while(0) 32 #else 33 /* for C++, use __attribute__((error)) - works almost as well as ESP_STATIC_ASSERT */ 34 #define TRY_STATIC_ASSERT(CONDITION, MSG) do { \ 35 if (__builtin_constant_p(CONDITION) && !(CONDITION)) { \ 36 extern __attribute__((error(#MSG))) void failed_compile_time_assert(void); \ 37 failed_compile_time_assert(); \ 38 } \ 39 assert(#MSG && (CONDITION)); \ 40 } while(0) 41 #endif /* __cplusplus */ 42 43 #endif /* __ESP_ASSERT_H__ */ 44
