mirror of
https://github.com/apple/swift-nio.git
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scottmarchant
5bf0267df4
### Motivation:
Packages that consume NIOPosix should be able to compile to WASI
platforms without special configurations. This change elides the
NIOPosix source from WASI platforms to simplify configuration.
Without this change:
```swift
dependencies: [
// Without this PR, downstream packages must maintain exhaustive platform list to exclude `.wasi`:
.product(
name: "NIOPosix",
package: "swift-nio",
condition: .when(platforms: [
.macOS,
.macCatalyst,
.iOS,
.tvOS,
.watchOS,
.visionOS,
.driverKit,
.linux,
.windows,
.android,
.openbsd,
// .wasi // <-- Need to exclude this, because there is no exclusion list api for SPM conditionals
])
),
]
```
With this change:
```swift
dependencies: [
// Without this PR, downstream packages can consume NIOPosix simply:
.product(name: "NIOPosix", package: "swift-nio"),
]
```
### Modifications:
- Add compiler directives (`#if !os(WASI)`) to all source files in
NIOPosix
### Result:
Downstream packages can compile to wasm without manually excluding the
NIOPosix dependency.
### Testing performed
- Verified `swift build --swift-sdk wasm32-unknown-wasip1 --target
NIOPosix` compiles, which demonstrates proper elision of source files in
NIOPosix that aren't wasm-ready.
- Confirmed GitHub [checks
pass](https://github.com/PassiveLogic/swift-nio/actions/runs/21151341738).
36 lines
1.2 KiB
Swift
36 lines
1.2 KiB
Swift
//===----------------------------------------------------------------------===//
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//
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// This source file is part of the SwiftNIO open source project
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//
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// Copyright (c) 2021-2022 Apple Inc. and the SwiftNIO project authors
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// Licensed under Apache License v2.0
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//
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// See LICENSE.txt for license information
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// See CONTRIBUTORS.txt for the list of SwiftNIO project authors
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//
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// SPDX-License-Identifier: Apache-2.0
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//
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//===----------------------------------------------------------------------===//
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#if !os(WASI)
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/// ``UnsafeTransfer`` can be used to make non-`Sendable` values `Sendable`.
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/// As the name implies, the usage of this is unsafe because it disables the sendable checking of the compiler.
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/// It can be used similar to `@unsafe Sendable` but for values instead of types.
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@usableFromInline
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struct UnsafeTransfer<Wrapped> {
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@usableFromInline
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var wrappedValue: Wrapped
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@inlinable
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init(_ wrappedValue: Wrapped) {
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self.wrappedValue = wrappedValue
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}
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}
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extension UnsafeTransfer: @unchecked Sendable {}
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extension UnsafeTransfer: Equatable where Wrapped: Equatable {}
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extension UnsafeTransfer: Hashable where Wrapped: Hashable {}
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#endif // !os(WASI)
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