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1// SPDX-FileCopyrightText: 2025 The Project Pterodactyl Developers
2//
3// SPDX-License-Identifier: MPL-2.0
4
5import Foundation
6import TSCBasic
7import llbuild2fx
8
9extension Keys {
10 /// Narrows a source tree to just the transitive dependencies of a given unit
11 struct NarrowSourceTree: BuildKey {
12 typealias ValueType = LLBDataID
13
14 let sourceTreeId: LLBDataID
15 let unitName: UnitName
16
17 static let versionDependencies: [any FXVersioning.Type] = [TransitiveDependencies.self, UnitMapOfSourceTree.self]
18
19 func computeValue(_ ctx: BuildContext<Self>) async throws -> ValueType {
20 let dependencies = try await ctx.request(TransitiveDependencies(sourceTreeId: sourceTreeId, unitName: unitName))
21 let unitMap = try await ctx.request(UnitMapOfSourceTree(sourceTreeId: sourceTreeId))
22
23 var sourceTree = try await LLBCASFileTree.load(id: sourceTreeId, in: ctx)
24 for (unitName, unitInfo) in unitMap.units {
25 if !dependencies.contains(unitName) {
26 sourceTree = try await sourceTree.remove(path: unitInfo.path, in: ctx)
27 }
28 }
29
30 return sourceTree.id
31 }
32 }
33}