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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2020 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 Basics
import PackageGraph
import protocol TSCBasic.OutputByteStream
/// An enum representing what subset of the package to build.
public enum BuildSubset {
/// Represents the subset of all products and non-test targets.
case allExcludingTests
/// Represents the subset of all products and targets.
case allIncludingTests
/// Represents a specific product. Allows to set a specific
/// destination if it's known.
case product(String, for: BuildParameters.Destination? = .none)
/// Represents a specific target. Allows to set a specific
/// destination if it's known.
case target(String, for: BuildParameters.Destination? = .none)
}
/// A protocol that represents a build system used by SwiftPM for all build operations. This allows factoring out the
/// implementation details between SwiftPM's `BuildOperation` and the XCBuild backed `XCBuildSystem`.
public protocol BuildSystem: Cancellable {
/// The delegate used by the build system.
var delegate: BuildSystemDelegate? { get }
/// The test products that this build system will build.
var builtTestProducts: [BuiltTestProduct] { get }
/// Returns the package graph used by the build system.
func getPackageGraph() throws -> ModulesGraph
/// Builds a subset of the package graph.
/// - Parameters:
/// - subset: The subset of the package graph to build.
func build(subset: BuildSubset) throws
var buildPlan: BuildPlan { get throws }
}
extension BuildSystem {
/// Builds the default subset: all targets excluding tests.
public func build() throws {
try build(subset: .allExcludingTests)
}
}
public protocol ProductBuildDescription {
/// The reference to the product.
var package: ResolvedPackage { get }
/// The reference to the product.
var product: ResolvedProduct { get }
/// The build parameters.
var buildParameters: BuildParameters { get }
}
extension ProductBuildDescription {
/// The path to the product binary produced.
public var binaryPath: AbsolutePath {
get throws {
try self.buildParameters.binaryPath(for: product)
}
}
}
public protocol BuildPlan {
/// Parameters used when building end products for the destination platform.
var destinationBuildParameters: BuildParameters { get }
/// Parameters used when building tools (macros and plugins).
var toolsBuildParameters: BuildParameters { get }
var buildProducts: AnySequence<ProductBuildDescription> { get }
func createAPIToolCommonArgs(includeLibrarySearchPaths: Bool) throws -> [String]
func createREPLArguments() throws -> [String]
/// Determines the arguments needed to run `swift-symbolgraph-extract` for
/// a particular module.
func symbolGraphExtractArguments(for module: ResolvedModule) throws -> [String]
}
public protocol BuildSystemFactory {
func makeBuildSystem(
explicitProduct: String?,
cacheBuildManifest: Bool,
productsBuildParameters: BuildParameters?,
toolsBuildParameters: BuildParameters?,
packageGraphLoader: (() throws -> ModulesGraph)?,
outputStream: OutputByteStream?,
logLevel: Diagnostic.Severity?,
observabilityScope: ObservabilityScope?
) throws -> any BuildSystem
}
public struct BuildSystemProvider {
// TODO: In the future, we may want this to be about specific capabilities of a build system rather than choosing a concrete one.
public enum Kind: String, CaseIterable {
case native
case xcode
}
public let providers: [Kind: any BuildSystemFactory]
public init(providers: [Kind: any BuildSystemFactory]) {
self.providers = providers
}
public func createBuildSystem(
kind: Kind,
explicitProduct: String? = .none,
cacheBuildManifest: Bool = true,
productsBuildParameters: BuildParameters? = .none,
toolsBuildParameters: BuildParameters? = .none,
packageGraphLoader: (() throws -> ModulesGraph)? = .none,
outputStream: OutputByteStream? = .none,
logLevel: Diagnostic.Severity? = .none,
observabilityScope: ObservabilityScope? = .none
) throws -> any BuildSystem {
guard let buildSystemFactory = self.providers[kind] else {
throw Errors.buildSystemProviderNotRegistered(kind: kind)
}
return try buildSystemFactory.makeBuildSystem(
explicitProduct: explicitProduct,
cacheBuildManifest: cacheBuildManifest,
productsBuildParameters: productsBuildParameters,
toolsBuildParameters: toolsBuildParameters,
packageGraphLoader: packageGraphLoader,
outputStream: outputStream,
logLevel: logLevel,
observabilityScope: observabilityScope
)
}
}
private enum Errors: Swift.Error {
case buildSystemProviderNotRegistered(kind: BuildSystemProvider.Kind)
}
public enum BuildSystemUtilities {
/// Returns the build path from the environment, if present.
public static func getEnvBuildPath(workingDir: AbsolutePath) throws -> AbsolutePath? {
// Don't rely on build path from env for SwiftPM's own tests.
guard Environment.current["SWIFTPM_TESTS_MODULECACHE"] == nil else { return nil }
guard let env = Environment.current["SWIFTPM_BUILD_DIR"] else { return nil }
return try AbsolutePath(validating: env, relativeTo: workingDir)
}
}
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