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Fix cyclical target dependencies #147

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Nov 12, 2017
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16 changes: 13 additions & 3 deletions Sources/XcodeGenKit/PBXProjGenerator.swift
Original file line number Diff line number Diff line change
Expand Up @@ -456,15 +456,25 @@ public class PBXProjGenerator {
return "\(carthagePath)/\(platformName)"
}

func getAllCarthageDependencies(target: Target) -> [Dependency] {
func getAllCarthageDependencies(target: Target, visitedTargets: [String: Bool] = [:]) -> [Dependency] {

// this is used to resolve cyclical target dependencies
var visitedTargets = visitedTargets
visitedTargets[target.name] = true

var frameworks: [Dependency] = []

for dependency in target.dependencies {
switch dependency.type {
case .carthage:
frameworks.append(dependency)
case .target:
if let target = spec.getTarget(dependency.reference) {
frameworks += getAllCarthageDependencies(target: target)
let targetName = dependency.reference
if visitedTargets[targetName] == true {
return []
}
if let target = spec.getTarget(targetName) {
frameworks += getAllCarthageDependencies(target: target, visitedTargets: visitedTargets)
}
default: break
}
Expand Down
9 changes: 8 additions & 1 deletion Tests/XcodeGenKitTests/ProjectGeneratorTests.swift
Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,6 @@ func projectGeneratorTests() {
}

func getPbxProj(_ spec: ProjectSpec) throws -> PBXProj {
try spec.validate()
let project = try getProject(spec).pbxproj
try project.validate()
return project
Expand Down Expand Up @@ -171,6 +170,14 @@ func projectGeneratorTests() {
try expect(script1.shellScript) == "script1"
try expect(script2.shellScript) == "script2"
}

$0.it("generates targets with cylical dependencies") {
let target1 = Target(name: "target1", type: .framework, platform: .iOS, dependencies: [Dependency(type: .target, reference: "target2")])
let target2 = Target(name: "target2", type: .framework, platform: .iOS, dependencies: [Dependency(type: .target, reference: "target1")])
let spec = ProjectSpec(basePath: "", name: "test", targets: [target1, target2])

_ = try getPbxProj(spec)
}
}

$0.describe("Schemes") {
Expand Down