wehub-resource-sync
74 lines
3.0 KiB
C++
74 lines
3.0 KiB
C++
/* Copyright 2021 The TensorFlow Authors. All Rights Reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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==============================================================================*/
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#ifndef TENSORFLOW_LITE_KERNELS_SHIM_STATUS_MACROS_H_
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#define TENSORFLOW_LITE_KERNELS_SHIM_STATUS_MACROS_H_
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#include "absl/status/status.h"
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#include "absl/strings/str_cat.h"
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// A few macros to help with propagating status.
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// They are mainly adapted from the ones in tensorflow/core/platform/errors.h
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// and tensorflow/core/platform/statusor.h but these files come with many
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// transitive deps which can be too much for TFLite use cases. If these type of
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// macros end up in `absl` we can replace them with those.
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// The macros are prefixed with SH_ to avoid name collision.
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namespace tflite {
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namespace shim {
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template <typename... Args>
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void AppendToMessage(::absl::Status* status, Args... args) {
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*status = ::absl::Status(status->code(),
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::absl::StrCat(status->message(), "\n\t", args...));
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}
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} // namespace shim
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} // namespace tflite
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// Propagates error up the stack and appends to the error message.
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#define SH_RETURN_WITH_CONTEXT_IF_ERROR(expr, ...) \
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do { \
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::absl::Status _status = (expr); \
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if (!_status.ok()) { \
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::tflite::shim::AppendToMessage(&_status, __VA_ARGS__); \
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return _status; \
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} \
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} while (0)
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// Propages the error up the stack.
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// This can't be merged with the SH_RETURN_WITH_CONTEXT_IF_ERROR unless some
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// overly clever/unreadable macro magic is used.
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#define SH_RETURN_IF_ERROR(...) \
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do { \
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::absl::Status _status = (__VA_ARGS__); \
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if (!_status.ok()) return _status; \
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} while (0)
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// Internal helper for concatenating macro values.
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#define SH_STATUS_MACROS_CONCAT_NAME_INNER(x, y) x##y
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#define SH_STATUS_MACROS_CONCAT_NAME(x, y) \
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SH_STATUS_MACROS_CONCAT_NAME_INNER(x, y)
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// Assigns an expression to lhs or propagates the error up.
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#define SH_ASSIGN_OR_RETURN(lhs, rexpr) \
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SH_ASSIGN_OR_RETURN_IMPL( \
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SH_STATUS_MACROS_CONCAT_NAME(statusor, __COUNTER__), lhs, rexpr)
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#define SH_ASSIGN_OR_RETURN_IMPL(statusor, lhs, rexpr) \
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auto statusor = (rexpr); \
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if (!statusor.ok()) return statusor.status(); \
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lhs = std::move(statusor.value())
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#endif // TENSORFLOW_LITE_KERNELS_SHIM_STATUS_MACROS_H_
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