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