1 // Copyright 2023 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 // https://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 THIRD_PARTY_ANONYMOUS_TOKENS_CPP_SHARED_STATUS_UTILS_H_ 16 #define THIRD_PARTY_ANONYMOUS_TOKENS_CPP_SHARED_STATUS_UTILS_H_ 17 18 #include "absl/base/optimization.h" 19 #include "absl/status/status.h" 20 21 namespace private_membership { 22 namespace anonymous_tokens { 23 24 #define _ANON_TOKENS_STATUS_MACROS_CONCAT_NAME(x, y) \ 25 _ANON_TOKENS_STATUS_MACROS_CONCAT_IMPL(x, y) 26 #define _ANON_TOKENS_STATUS_MACROS_CONCAT_IMPL(x, y) x##y 27 28 #define ANON_TOKENS_ASSIGN_OR_RETURN(lhs, rexpr) \ 29 _ANON_TOKENS_ASSIGN_OR_RETURN_IMPL( \ 30 _ANON_TOKENS_STATUS_MACROS_CONCAT_NAME(_status_or_val, __LINE__), lhs, \ 31 rexpr) 32 33 #define _ANON_TOKENS_ASSIGN_OR_RETURN_IMPL(statusor, lhs, rexpr) \ 34 auto statusor = (rexpr); \ 35 if (ABSL_PREDICT_FALSE(!statusor.ok())) { \ 36 return statusor.status(); \ 37 } \ 38 lhs = *std::move(statusor) 39 40 #define ANON_TOKENS_RETURN_IF_ERROR(expr) \ 41 do { \ 42 auto _status = (expr); \ 43 if (ABSL_PREDICT_FALSE(!_status.ok())) return _status; \ 44 } while (0) 45 46 } // namespace anonymous_tokens 47 } // namespace private_membership 48 49 #endif // THIRD_PARTY_ANONYMOUS_TOKENS_CPP_SHARED_STATUS_UTILS_H_ 50