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5709b9ec14
Probably not significant in practice but I noticed that we don’t need to compute the prefix of `orLog` unless the closure threw an error. Make `prefix` an autoclosure to avoid its eager computation.
53 lines
1.5 KiB
Swift
53 lines
1.5 KiB
Swift
//===----------------------------------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2023 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#if canImport(os)
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import os
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#endif
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private func logError(prefix: String, error: Error, level: LogLevel = .error) {
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logger.log(
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level: level,
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"\(prefix, privacy: .public)\(prefix.isEmpty ? "" : ": ", privacy: .public)\(error.forLogging)"
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)
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}
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/// Like `try?`, but logs the error on failure.
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package func orLog<R>(
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_ prefix: @autoclosure () -> String,
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level: LogLevel = .error,
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_ block: () throws -> R?
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) -> R? {
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do {
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return try block()
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} catch {
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logError(prefix: prefix(), error: error, level: level)
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return nil
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}
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}
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/// Like ``orLog(_:level:_:)-66i2z`` but allows execution of an `async` body.
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///
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/// - SeeAlso: ``orLog(_:level:_:)-66i2z``
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package func orLog<R>(
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_ prefix: @autoclosure () -> String,
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level: LogLevel = .error,
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@_inheritActorContext _ block: @Sendable () async throws -> R?
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) async -> R? {
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do {
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return try await block()
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} catch {
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logError(prefix: prefix(), error: error, level: level)
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return nil
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}
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}
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