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65 lines
2.7 KiB
65 lines
2.7 KiB
// Copyright 2024 The Centipede Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Convenience macros for dealing with absl::Status and friends.
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#ifndef FUZZTEST_COMMON_STATUS_MACROS_H_
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#define FUZZTEST_COMMON_STATUS_MACROS_H_
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#include <cstdint>
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#include "absl/base/attributes.h"
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#include "absl/base/optimization.h"
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#include "absl/log/log.h"
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// If `status_expr` (an expression of type `absl::Status`) is not OK then return
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// it from the current function. Otherwise, do nothing.
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#define RETURN_IF_NOT_OK(status_expr) \
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do { \
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const absl::Status status_value = (status_expr); \
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if (ABSL_PREDICT_FALSE(!status_value.ok())) { \
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return status_value; \
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} \
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} while (false)
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// Assigns `dest` to the value contained within the `absl::StatusOr<T> src` if
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// `src.ok()`, otherwise, returns `src.status()` from the current function.
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#define ASSIGN_OR_RETURN_IF_NOT_OK(dest, src) \
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ASSIGN_OR_RETURN_IF_NOT_OK_IMPL_( \
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CHECKS_INTERNAL_CONCAT_(value_or_, __LINE__), dest, src)
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#define ASSIGN_OR_RETURN_IF_NOT_OK_IMPL_(value_or, dest, src) \
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auto value_or = (src); \
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if (ABSL_PREDICT_FALSE(!value_or.ok())) { \
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return std::move(value_or).status(); \
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} \
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dest = std::move(value_or).value()
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// Internal helper for concatenating macro values.
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#define CHECKS_INTERNAL_CONCAT_IMPL_(x, y) x##y
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#define CHECKS_INTERNAL_CONCAT_(x, y) CHECKS_INTERNAL_CONCAT_IMPL_(x, y)
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namespace fuzztest::internal {
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template <typename T>
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decltype(auto) ValueOrDie(T&& value ABSL_ATTRIBUTE_LIFETIME_BOUND,
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std::uint_least32_t line = __builtin_LINE(),
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const char* file_name = __builtin_FILE()) {
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if (ABSL_PREDICT_FALSE(!value.ok())) {
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LOG(FATAL) << file_name << ":" << line
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<< ": ValueOrDie on non-OK status: " << value.status();
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}
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return *std::forward<T>(value);
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}
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} // namespace fuzztest::internal
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#endif // FUZZTEST_COMMON_STATUS_MACROS_H_
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