Dynamic member lookup added

README.md

@@ -27,6 +27,21 @@ Define injected properties:
 @Injected var storage: StorageService
 ```
 
+Iterate over all dependencies:
+
+```swift
+for service in dependencies {
+    service.start()
+}
+```
+
+Access using dynamic member lookup:
+
+```swift
+let location: LocationProtocol? = dependencies.locationService // Erase type to protocol
+let storage: StorageService = dependencies.storageService! // Force unwarp if needed
+```
+
 More details on implementation and usage is [here](https://grigory.nl/posts/swift-property-wrappers/)
 
 ### How to add it to Xcode project?

Sources/Injected/Injected.swift

@@ -6,6 +6,8 @@
 //  Copyright © 2020 Grigory Avdyushin. All rights reserved.
 //
 
+import Foundation
+
 public struct Dependency {
 
     public typealias ResolveBlock<T> = () -> T
@@ -24,6 +26,7 @@ public struct Dependency {
     }
 }
 
+@dynamicMemberLookup
 open class Dependencies: Sequence {
 
     static private(set) var shared = Dependencies()
@@ -43,6 +46,7 @@ open class Dependencies: Sequence {
         register(dependency())
     }
 
+    /// Builds (resolves) all dependencies graph
     open func build() {
         // We assuming that at this point all needed dependencies are registered
         for index in dependencies.startIndex..<dependencies.endIndex {
@@ -51,11 +55,18 @@ open class Dependencies: Sequence {
         Self.shared = self
     }
 
+    /// Returns iterator for all registered dependencies
     public func makeIterator() -> AnyIterator<Any> {
         var iter = dependencies.makeIterator()
         return AnyIterator { iter.next()?.value }
     }
 
+    /// Return dependency by given camelCase name of the object type
+    /// For example: if dependency registered as `MyService` name should be `myService`
+    public subscript<T>(dynamicMember name: String) -> T? {
+        dependencies.first { $0.name == name.prefix(1).capitalized + name.dropFirst() }?.value as? T
+    }
+
     // MARK: - Private
 
     fileprivate init() { }

Tests/InjectedTests/InjectedTests.swift

@@ -40,6 +40,19 @@ final class InjectedTests: XCTestCase {
         XCTAssertEqual(serviceB.fetch().first, "Foo")
     }
 
+    func testIterator() {
+        for service in deps {
+            XCTAssertTrue(service is ServiceA || service is ServiceB)
+        }
+    }
+
+    func testMemberLookup() {
+        let serviceA: ServiceA = deps.serviceAImpl!
+        XCTAssertTrue(serviceA.run())
+        let serviceB: ServiceB = deps.serviceBImpl!
+        XCTAssertEqual(serviceB.fetch().first, "Foo")
+    }
+
     static var allTests = [
         ("testExample", testExample),
     ]