c34026b101
note: done using ```sh git grep -l "2010-2024 Google" | xargs sed -i 's/2010-2024 Google/2010-2025 Google/' ```
73 lines
3.2 KiB
C++
73 lines
3.2 KiB
C++
// Copyright 2010-2025 Google LLC
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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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// http://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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#ifndef OR_TOOLS_BASE_STATUS_MACROS_H_
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#define OR_TOOLS_BASE_STATUS_MACROS_H_
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#include "absl/status/status.h"
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#include "absl/status/statusor.h"
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#include "ortools/base/status_builder.h"
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// Run a command that returns a absl::Status. If the called code returns an
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// error status, return that status up out of this method too.
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//
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// Example:
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// RETURN_IF_ERROR(DoThings(4));
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// RETURN_IF_ERROR(DoThings(5)) << "Additional error context";
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#define RETURN_IF_ERROR(expr) \
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switch (0) \
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case 0: \
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default: \
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if (const ::absl::Status status_macro_internal_adaptor = (expr); \
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status_macro_internal_adaptor.ok()) { \
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} else /* NOLINT */ \
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return ::util::StatusBuilder(status_macro_internal_adaptor)
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// Executes an expression that returns an absl::StatusOr, extracting its value
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// into the variable defined by lhs (or returning on error).
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//
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// Example: Assigning to an existing value
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// ValueType value;
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// ASSIGN_OR_RETURN(value, MaybeGetValue(arg));
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// ASSIGN_OR_RETURN((auto [key, val]), MaybeGetValue(arg));
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//
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// WARNING: ASSIGN_OR_RETURN expands into multiple statements; it cannot be used
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// in a single statement (e.g. as the body of an if statement without {})!
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#define ASSIGN_OR_RETURN(lhs, rexpr) \
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STATUS_MACROS_IMPL_ASSIGN_OR_RETURN_( \
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STATUS_MACROS_IMPL_CONCAT_(_status_or_value, __COUNTER__), lhs, rexpr);
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#define STATUS_MACROS_IMPL_ASSIGN_OR_RETURN_(statusor, lhs, rexpr) \
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auto statusor = (rexpr); \
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RETURN_IF_ERROR(statusor.status()); \
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STATUS_MACROS_IMPL_UNPARENTHESIS(lhs) = std::move(statusor).value()
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// Internal helpers for macro expansion.
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#define STATUS_MACROS_IMPL_UNPARENTHESIS_INNER(...) \
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STATUS_MACROS_IMPL_UNPARENTHESIS_INNER_(__VA_ARGS__)
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#define STATUS_MACROS_IMPL_UNPARENTHESIS_INNER_(...) \
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STATUS_MACROS_IMPL_VAN##__VA_ARGS__
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#define ISH(...) ISH __VA_ARGS__
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#define STATUS_MACROS_IMPL_VANISH
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// If the input is parenthesized, removes the parentheses. Otherwise expands to
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// the input unchanged.
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#define STATUS_MACROS_IMPL_UNPARENTHESIS(...) \
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STATUS_MACROS_IMPL_UNPARENTHESIS_INNER(ISH __VA_ARGS__)
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// Internal helper for concatenating macro values.
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#define STATUS_MACROS_IMPL_CONCAT_INNER_(x, y) x##y
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#define STATUS_MACROS_IMPL_CONCAT_(x, y) STATUS_MACROS_IMPL_CONCAT_INNER_(x, y)
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#endif // OR_TOOLS_BASE_STATUS_MACROS_H_
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