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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 struct ValueType: Codable, FXValue {
13 let sourceTreeId: LLBDataID
14 }
15
16 let sourceTreeId: LLBDataID
17 let unitName: UnitName
18
19 static let versionDependencies: [any FXVersioning.Type] = [TransitiveDependencies.self, UnitMapOfSourceTree.self]
20
21 func computeValue(_ ctx: BuildContext<Self>) async throws -> ValueType {
22 let dependencies = try await ctx.request(TransitiveDependencies(sourceTreeId: sourceTreeId, unitName: unitName)).dependencies
23 let unitMap = try await ctx.request(UnitMapOfSourceTree(sourceTreeId: sourceTreeId))
24
25 var sourceTree = try await LLBCASFileTree.load(id: sourceTreeId, in: ctx)
26 for (unitName, unitInfo) in unitMap.units {
27 if !dependencies.contains(unitName) {
28 sourceTree = try await sourceTree.remove(path: unitInfo.path, in: ctx)
29 }
30 }
31
32 return ValueType(sourceTreeId: sourceTree.id)
33 }
34 }
35}