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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2023 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import Foundation
import Basics
import PackageGraph
internal import PackageLoading
import PackageModel
struct PluginTargetBuildDescription: BuildTarget {
private let target: ResolvedModule
private let toolsVersion: ToolsVersion
private let toolchain: any Toolchain
let isPartOfRootPackage: Bool
var isTestTarget: Bool { false }
init(target: ResolvedModule, toolsVersion: ToolsVersion, toolchain: any Toolchain, isPartOfRootPackage: Bool) {
assert(target.type == .plugin)
self.target = target
self.toolsVersion = toolsVersion
self.toolchain = toolchain
self.isPartOfRootPackage = isPartOfRootPackage
}
var sources: [SourceItem] {
return target.sources.paths.map {
SourceItem(sourceFile: $0.asURL, outputFile: nil)
}
}
var headers: [URL] { [] }
var resources: [URL] {
return target.underlying.resources.map(\.path.asURL)
}
var ignored: [URL] {
return target.underlying.ignored.map(\.asURL)
}
var others: [URL] {
return target.underlying.others.map(\.asURL)
}
var name: String {
return target.name
}
var compiler: BuildTargetCompiler { .swift }
var destination: BuildDestination {
// Plugins are always built for the host.
.host
}
var outputPaths: [URL] {
get throws {
struct NotSupportedError: Error, CustomStringConvertible {
var description: String { "Getting output paths for a plugin target is not supported" }
}
throw NotSupportedError()
}
}
func compileArguments(for fileURL: URL) throws -> [String] {
// FIXME: This is very odd and we should clean this up by merging `ManifestLoader` and `DefaultPluginScriptRunner` again.
var args = ManifestLoader.interpreterFlags(for: self.toolsVersion, toolchain: toolchain)
// Note: we ignore the `fileURL` here as the expectation is that we get a commandline for the entire target in case of Swift. Plugins are always assumed to only consist of Swift files.
args += try sources.map { try $0.sourceFile.filePath }
return args
}
}
fileprivate enum FilePathError: Error, CustomStringConvertible {
case noFileSystemRepresentation(URL)
case noFileURL(URL)
var description: String {
switch self {
case .noFileSystemRepresentation(let url):
return "\(url.description) cannot be represented as a file system path"
case .noFileURL(let url):
return "\(url.description) is not a file URL"
}
}
}
fileprivate extension URL {
/// Assuming that this is a file URL, the path with which the file system refers to the file. This is similar to
/// `path` but has two differences:
/// - It uses backslashes as the path separator on Windows instead of forward slashes
/// - It throws an error when called on a non-file URL.
///
/// `filePath` should generally be preferred over `path` when dealing with file URLs.
var filePath: String {
get throws {
guard self.isFileURL else {
throw FilePathError.noFileURL(self)
}
return try self.withUnsafeFileSystemRepresentation { buffer in
guard let buffer else {
throw FilePathError.noFileSystemRepresentation(self)
}
return String(cString: buffer)
}
}
}
}
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