change target source from String to Source struct

Sources/ProjectSpec/Source.swift

@@ -0,0 +1,47 @@
+//
+//  Source.swift
+//  ProjectSpec
+//
+//  Created by Yonas Kolb on 31/10/17.
+//
+
+import Foundation
+import JSONUtilities
+
+public struct Source {
+
+    public var path: String
+
+    public init(path: String) {
+        self.path = path
+    }
+}
+
+extension Source: ExpressibleByStringLiteral {
+
+    public init(stringLiteral value: String) {
+        self = Source(path: value)
+    }
+
+    public init(extendedGraphemeClusterLiteral value: String) {
+        self = Source(path: value)
+    }
+
+    public init(unicodeScalarLiteral value: String) {
+        self = Source(path: value)
+    }
+}
+
+extension Source: JSONObjectConvertible {
+
+    public init(jsonDictionary: JSONDictionary) throws {
+        path = try jsonDictionary.json(atKeyPath: "path")
+    }
+}
+
+extension Source: Equatable {
+
+    public static func == (lhs: Source, rhs: Source) -> Bool {
+        return lhs.path == rhs.path
+    }
+}

Sources/ProjectSpec/SpecValidation.swift

@@ -69,7 +69,7 @@ extension ProjectSpec {
             }
 
             for source in target.sources {
-                let sourcePath = basePath + source
+                let sourcePath = basePath + source.path
                 if !sourcePath.exists {
                     errors.append(.invalidTargetSource(target: target.name, source: sourcePath.string))
                 }

Sources/ProjectSpec/Target.swift

@@ -15,7 +15,7 @@ public struct Target {
     public var type: PBXProductType
     public var platform: Platform
     public var settings: Settings
-    public var sources: [String]
+    public var sources: [Source]
     public var dependencies: [Dependency]
     public var prebuildScripts: [BuildScript]
     public var postbuildScripts: [BuildScript]
@@ -30,7 +30,7 @@ public struct Target {
         return name
     }
 
-    public init(name: String, type: PBXProductType, platform: Platform, settings: Settings = .empty, configFiles: [String: String] = [:], sources: [String] = [], dependencies: [Dependency] = [], prebuildScripts: [BuildScript] = [], postbuildScripts: [BuildScript] = [], scheme: TargetScheme? = nil) {
+    public init(name: String, type: PBXProductType, platform: Platform, settings: Settings = .empty, configFiles: [String: String] = [:], sources: [Source] = [], dependencies: [Dependency] = [], prebuildScripts: [BuildScript] = [], postbuildScripts: [BuildScript] = [], scheme: TargetScheme? = nil) {
         self.name = name
         self.type = type
         self.platform = platform
@@ -179,9 +179,19 @@ extension Target: NamedJSONDictionaryConvertible {
         settings = jsonDictionary.json(atKeyPath: "settings") ?? .empty
         configFiles = jsonDictionary.json(atKeyPath: "configFiles") ?? [:]
         if let source: String = jsonDictionary.json(atKeyPath: "sources") {
-            sources = [source]
+            sources = [Source(path: source)]
+        } else if let array = jsonDictionary["sources"] as? [Any] {
+            sources = try array.flatMap { source in
+                if let string = source as? String {
+                    return Source(path: string)
+                } else if let dictionary = source as? [String: Any] {
+                    return try Source(jsonDictionary: dictionary)
+                } else {
+                    return nil
+                }
+            }
         } else {
-            sources = jsonDictionary.json(atKeyPath: "sources") ?? []
+            sources = []
         }
         if jsonDictionary["dependencies"] == nil {
             dependencies = []

Tests/XcodeGenKitTests/SpecLoadingTests.swift

@@ -68,6 +68,22 @@ func specLoadingTests() {
             try expectTargetError(target, .invalidDependency([invalid: "name"]))
         }
 
+        $0.it("parses sources") {
+            var targetDictionary1 = validTarget
+            targetDictionary1["sources"] = [
+                "source1",
+                ["path": "source2"],
+            ]
+            var targetDictionary2 = validTarget
+            targetDictionary2["sources"] = "source3"
+
+            let target1 = try Target(name: "test", jsonDictionary: targetDictionary1)
+            let target2 = try Target(name: "test", jsonDictionary: targetDictionary2)
+
+            try expect(target1.sources) == [Source(path: "source1"), Source(path: "source2")]
+            try expect(target2.sources) == [Source(path: "source3")]
+        }
+
         $0.it("parses target dependencies") {
             var targetDictionary = validTarget
             targetDictionary["dependencies"] = [