1 // Copyright (C) 2019 Google LLC 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 15 #ifndef ICING_UTIL_STATUS_MACROS_H_ 16 #define ICING_UTIL_STATUS_MACROS_H_ 17 18 #include "icing/text_classifier/lib3/utils/base/status_macros.h" 19 #include "icing/text_classifier/lib3/utils/base/statusor.h" 20 #include "icing/absl_ports/canonical_errors.h" 21 22 #define ICING_RETURN_ERROR_IF_NULL(var) \ 23 do { \ 24 if ((var) == nullptr) { \ 25 return absl_ports::FailedPreconditionError(#var " is null."); \ 26 } \ 27 } while (false) 28 29 #define ICING_RETURN_IF_ERROR(expr) TC3_RETURN_IF_ERROR(expr) 30 31 #define ICING_ASSIGN_OR_RETURN(...) \ 32 TC_STATUS_MACROS_IMPL_GET_VARIADIC_( \ 33 (__VA_ARGS__, TC_STATUS_MACROS_IMPL_ASSIGN_OR_RETURN_3_, \ 34 TC_STATUS_MACROS_IMPL_ASSIGN_OR_RETURN_2_)) \ 35 (__VA_ARGS__) 36 37 #endif // ICING_UTIL_STATUS_MACROS_H_ 38