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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2024 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 PackageLoading
import PackageModel
import SwiftParser
import SwiftSyntax
import SwiftSyntaxBuilder
/// Add a target dependency to a manifest's source code.
public struct AddTargetDependency {
/// The set of argument labels that can occur after the "dependencies"
/// argument in the various target initializers.
///
/// TODO: Could we generate this from the the PackageDescription module, so
/// we don't have keep it up-to-date manually?
private static let argumentLabelsAfterDependencies: Set<String> = [
"path",
"exclude",
"sources",
"resources",
"publicHeadersPath",
"packageAccess",
"cSettings",
"cxxSettings",
"swiftSettings",
"linkerSettings",
"plugins",
]
/// Produce the set of source edits needed to add the given target
/// dependency to the given manifest file.
public static func addTargetDependency(
_ dependency: TargetDescription.Dependency,
targetName: String,
to manifest: SourceFileSyntax
) throws -> PackageEditResult {
// Make sure we have a suitable tools version in the manifest.
try manifest.checkEditManifestToolsVersion()
guard let packageCall = manifest.findCall(calleeName: "Package") else {
throw ManifestEditError.cannotFindPackage
}
// Dig out the array of targets.
guard let targetsArgument = packageCall.findArgument(labeled: "targets"),
let targetArray = targetsArgument.expression.findArrayArgument() else {
throw ManifestEditError.cannotFindTargets
}
// Look for a call whose name is a string literal matching the
// requested target name.
func matchesTargetCall(call: FunctionCallExprSyntax) -> Bool {
guard let nameArgument = call.findArgument(labeled: "name") else {
return false
}
guard let stringLiteral = nameArgument.expression.as(StringLiteralExprSyntax.self),
let literalValue = stringLiteral.representedLiteralValue else {
return false
}
return literalValue == targetName
}
guard let targetCall = FunctionCallExprSyntax.findFirst(in: targetArray, matching: matchesTargetCall) else {
throw ManifestEditError.cannotFindTarget(targetName: targetName)
}
let newTargetCall = try addTargetDependencyLocal(
dependency, to: targetCall
)
return PackageEditResult(
manifestEdits: [
.replace(targetCall, with: newTargetCall.description)
]
)
}
/// Implementation of adding a target dependency to an existing call.
static func addTargetDependencyLocal(
_ dependency: TargetDescription.Dependency,
to targetCall: FunctionCallExprSyntax
) throws -> FunctionCallExprSyntax {
try targetCall.appendingToArrayArgument(
label: "dependencies",
trailingLabels: Self.argumentLabelsAfterDependencies,
newElement: dependency.asSyntax()
)
}
}
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