Version final app

Trolley App/Base.lproj/Main.storyboard

@@ -1,66 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="15400" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
-    <device id="retina6_1" orientation="portrait" appearance="light"/>
-    <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15404"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="tne-QT-ifu">
-            <objects>
-                <viewController id="BYZ-38-t0r" customClass="ViewController" customModule="Trolley_App" customModuleProvider="target" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
-                        <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <subviews>
-                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Trolley IUPI" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="5sx-mb-Vhu">
-                                <rect key="frame" x="108" y="90" width="201" height="47"/>
-                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
-                                <fontDescription key="fontDescription" name="HelveticaNeue" family="Helvetica Neue" pointSize="40"/>
-                                <nil key="textColor"/>
-                                <nil key="highlightedColor"/>
-                            </label>
-                            <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFit" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" image="map" translatesAutoresizingMaskIntoConstraints="NO" id="KQC-gY-9mQ">
-                                <rect key="frame" x="7" y="248" width="400" height="400"/>
-                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
-                            </imageView>
-                            <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="OCY-3M-KE5">
-                                <rect key="frame" x="71" y="706" width="111" height="47"/>
-                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
-                                <color key="backgroundColor" systemColor="systemPinkColor" red="1" green="0.1764705882" blue="0.33333333329999998" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                                <fontDescription key="fontDescription" name="HelveticaNeue" family="Helvetica Neue" pointSize="30"/>
-                                <state key="normal" title="Paradas">
-                                    <color key="titleColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                </state>
-                                <connections>
-                                    <action selector="paradasButton:" destination="BYZ-38-t0r" eventType="touchUpInside" id="esp-QM-yT5"/>
-                                </connections>
-                            </button>
-                            <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="2cl-Ch-09v">
-                                <rect key="frame" x="246" y="706" width="113" height="47"/>
-                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
-                                <color key="backgroundColor" systemColor="systemPinkColor" red="1" green="0.1764705882" blue="0.33333333329999998" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                                <fontDescription key="fontDescription" name="HelveticaNeue" family="Helvetica Neue" pointSize="30"/>
-                                <state key="normal" title="Tracking">
-                                    <color key="titleColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                </state>
-                                <connections>
-                                    <action selector="trackingButton:" destination="BYZ-38-t0r" eventType="touchUpInside" id="bj2-2c-F73"/>
-                                </connections>
-                            </button>
-                        </subviews>
-                        <color key="backgroundColor" systemColor="secondarySystemGroupedBackgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="137.68115942028987" y="133.92857142857142"/>
-        </scene>
-    </scenes>
-    <resources>
-        <image name="map" width="520.5" height="431"/>
-    </resources>
-</document>

Trolley App/ViewController.swift

@@ -1,60 +0,0 @@
-//
-//  ViewController.swift
-//  Trolley App
-//
-//  Created by Kendrick Morales on 10/21/19.
-//  Copyright © 2019 Kendrick Morales. All rights reserved.
-//
-
-import UIKit
-import CoreLocation
-import MapKit
-class ViewController: UIViewController,  CLLocationManagerDelegate {
-
-    var estado = false
-    let locationManager = CLLocationManager()
-    
-   
-    
-    
-    override func viewDidLoad() {
-        super.viewDidLoad()
-        locationManager.requestAlwaysAuthorization()
-        if CLLocationManager.locationServicesEnabled() {
-            locationManager.delegate = self
-            locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
-        }
-
-        // Do any additional setup after loading the view.
-    }
-    
-    //funcion para poder extraer latitud y longitud
-    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
-        guard let locValue: CLLocationCoordinate2D = manager.location?.coordinate
-            else { return }
-        print("locations = \(locValue.latitude) \(locValue.longitude)")
-    }
- 
-    
-    //botton de las paradas
-    @IBAction func trackingButton(_ sender: UIButton) {
-        
-        // si el estado esta en falso
-        if estado != true{
-         sender.setTitle("Stop", for: .normal) // cambia el texto del boton
-         estado = true // cambiamos el estado a activado
-         locationManager.startUpdatingLocation() // activamos el metodo de capturacion de localizacion
-        }
-        else{ // si el estado esta en cierto
-             sender.setTitle("Tracking", for: .normal) // cambiamos el texto del boton
-            locationManager.stopUpdatingLocation() // paramos el metodo de capturacion de localizacion
-            
-            estado = false // se cambia estado de nuevo a falso
-        }
-    }
-    
-   
-    
-    
-}
-

trolley/Podfile

@@ -0,0 +1,13 @@
+# Uncomment the next line to define a global platform for your project
+#source 'https://github.com/CocoaPods/Specs.git' 
+platform :ios, '10.0'
+
+target 'Trolley App' do
+  # Comment the next line if you don't want to use dynamic frameworks
+  use_frameworks!
+
+  # Pods for Trolley App
+  pod 'Alamofire', '~> 5.0.0-rc.3'
+  pod 'SwiftyJSON', '~> 4.0'
+
+end

trolley/Podfile.lock

@@ -0,0 +1,20 @@
+PODS:
+  - Alamofire (5.0.0-rc.3)
+  - SwiftyJSON (4.3.0)
+
+DEPENDENCIES:
+  - Alamofire (~> 5.0.0-rc.3)
+  - SwiftyJSON (~> 4.0)
+
+SPEC REPOS:
+  trunk:
+    - Alamofire
+    - SwiftyJSON
+
+SPEC CHECKSUMS:
+  Alamofire: ca8c0de6906873be89d6deec5c8de279e00bf872
+  SwiftyJSON: 6faa0040f8b59dead0ee07436cbf76b73c08fd08
+
+PODFILE CHECKSUM: bbeb87e6f37761e96d8e2b35e3bf81e6aa0f8a7f
+
+COCOAPODS: 1.8.4

trolley/Pods/Alamofire/LICENSE

@@ -0,0 +1,19 @@
+Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

trolley/Pods/Alamofire/README.md

@@ -0,0 +1,202 @@
+![Alamofire: Elegant Networking in Swift](https://raw.githubusercontent.com/Alamofire/Alamofire/master/alamofire.png)
+
+[![Build Status](https://travis-ci.org/Alamofire/Alamofire.svg?branch=master)](https://travis-ci.org/Alamofire/Alamofire)
+[![CocoaPods Compatible](https://img.shields.io/cocoapods/v/Alamofire.svg)](https://img.shields.io/cocoapods/v/Alamofire.svg)
+[![Carthage Compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
+[![Platform](https://img.shields.io/cocoapods/p/Alamofire.svg?style=flat)](https://alamofire.github.io/Alamofire)
+[![Twitter](https://img.shields.io/badge/twitter-@AlamofireSF-blue.svg?style=flat)](https://twitter.com/AlamofireSF)
+[![Gitter](https://badges.gitter.im/Alamofire/Alamofire.svg)](https://gitter.im/Alamofire/Alamofire?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
+[![Open Source Helpers](https://www.codetriage.com/alamofire/alamofire/badges/users.svg)](https://www.codetriage.com/alamofire/alamofire)
+
+Alamofire is an HTTP networking library written in Swift.
+
+**⚠️⚠️⚠️ WARNING ⚠️⚠️⚠️** This documentation is out of date during the Alamofire 5 beta process.
+
+- [Features](#features)
+- [Component Libraries](#component-libraries)
+- [Requirements](#requirements)
+- [Migration Guides](#migration-guides)
+- [Communication](#communication)
+- [Installation](#installation)
+- [Usage](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md#using-alamofire)
+    - [**Introduction -**](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md#introduction) [Making Requests](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md#making-requests), [Response Handling](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md#response-handling), [Response Validation](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md#response-validation), [Response Caching](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md#response-caching)
+	- **HTTP -** [HTTP Methods](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md#http-methods), [Parameters and Parameter Encoder](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md##request-parameters-and-parameter-encoders), [HTTP Headers](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md#http-headers), [Authentication](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md#authentication)
+	- **Large Data -** [Downloading Data to a File](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md#downloading-data-to-a-file), [Uploading Data to a Server](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md#uploading-data-to-a-server)
+	- **Tools -** [Statistical Metrics](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md#statistical-metrics), [cURL Command Output](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Usage.md#curl-command-output)
+- [Advanced Usage](https://github.com/Alamofire/Alamofire/blob/master/Documentation/AdvancedUsage.md)
+	- **URL Session -** [Session Manager](https://github.com/Alamofire/Alamofire/blob/master/Documentation/AdvancedUsage.md#session-manager), [Session Delegate](https://github.com/Alamofire/Alamofire/blob/master/Documentation/AdvancedUsage.md#session-delegate), [Request](https://github.com/Alamofire/Alamofire/blob/master/Documentation/AdvancedUsage.md#request)
+	- **Routing -** [Routing Requests](https://github.com/Alamofire/Alamofire/blob/master/Documentation/AdvancedUsage.md#routing-requests), [Adapting and Retrying Requests](https://github.com/Alamofire/Alamofire/blob/master/Documentation/AdvancedUsage.md#adapting-and-retrying-requests)
+	- **Model Objects -** [Custom Response Serialization](https://github.com/Alamofire/Alamofire/blob/master/Documentation/AdvancedUsage.md#custom-response-serialization)
+	- **Connection -** [Security](https://github.com/Alamofire/Alamofire/blob/master/Documentation/AdvancedUsage.md#security), [Network Reachability](https://github.com/Alamofire/Alamofire/blob/master/Documentation/AdvancedUsage.md#network-reachability)
+- [Open Radars](#open-radars)
+- [FAQ](#faq)
+- [Credits](#credits)
+- [Donations](#donations)
+- [License](#license)
+
+## Features
+
+- [x] Chainable Request / Response Methods
+- [x] URL / JSON / plist Parameter Encoding
+- [x] Upload File / Data / Stream / MultipartFormData
+- [x] Download File using Request or Resume Data
+- [x] Authentication with URLCredential
+- [x] HTTP Response Validation
+- [x] Upload and Download Progress Closures with Progress
+- [x] cURL Command Output
+- [x] Dynamically Adapt and Retry Requests
+- [x] TLS Certificate and Public Key Pinning
+- [x] Network Reachability
+- [x] Comprehensive Unit and Integration Test Coverage
+- [x] [Complete Documentation](https://alamofire.github.io/Alamofire)
+
+## Component Libraries
+
+In order to keep Alamofire focused specifically on core networking implementations, additional component libraries have been created by the [Alamofire Software Foundation](https://github.com/Alamofire/Foundation) to bring additional functionality to the Alamofire ecosystem.
+
+- [AlamofireImage](https://github.com/Alamofire/AlamofireImage) - An image library including image response serializers, `UIImage` and `UIImageView` extensions, custom image filters, an auto-purging in-memory cache and a priority-based image downloading system.
+- [AlamofireNetworkActivityIndicator](https://github.com/Alamofire/AlamofireNetworkActivityIndicator) - Controls the visibility of the network activity indicator on iOS using Alamofire. It contains configurable delay timers to help mitigate flicker and can support `URLSession` instances not managed by Alamofire.
+
+## Requirements
+
+- iOS 10.0+ / macOS 10.12+ / tvOS 10.0+ / watchOS 3.0+
+- Xcode 10.2+
+- Swift 5+
+
+## Migration Guides
+
+- Alamofire 5.0 Migration Guide: To be written!
+- [Alamofire 4.0 Migration Guide](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Alamofire%204.0%20Migration%20Guide.md)
+- [Alamofire 3.0 Migration Guide](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Alamofire%203.0%20Migration%20Guide.md)
+- [Alamofire 2.0 Migration Guide](https://github.com/Alamofire/Alamofire/blob/master/Documentation/Alamofire%202.0%20Migration%20Guide.md)
+
+## Communication
+- If you **need help with making network requests** using Alamofire, use [Stack Overflow](https://stackoverflow.com/questions/tagged/alamofire) and tag `alamofire`.
+- If you need to **find or understand an API**, check [our documentation](http://alamofire.github.io/Alamofire/) or [Apple's documentation for `URLSession`](https://developer.apple.com/documentation/foundation/url_loading_system), on top of which Alamofire is built.
+- If you need **help with an Alamofire feature**, use [our forum on swift.org](https://forums.swift.org/c/related-projects/alamofire).
+- If you'd like to **discuss Alamofire best practices**, use [our forum on swift.org](https://forums.swift.org/c/related-projects/alamofire).
+- If you'd like to **discuss a feature request**, use [our forum on swift.org](https://forums.swift.org/c/related-projects/alamofire). 
+- If you **found a bug**, open an issue here on GitHub and follow the guide. The more detail the better!
+- If you **want to contribute**, submit a pull request.
+
+## Installation
+
+### CocoaPods
+
+[CocoaPods](https://cocoapods.org) is a dependency manager for Cocoa projects. For usage and installation instructions, visit their website. To integrate Alamofire into your Xcode project using CocoaPods, specify it in your `Podfile`:
+
+```ruby
+pod 'Alamofire', '~> 5.0.0-rc.3'
+```
+
+### Carthage
+
+[Carthage](https://github.com/Carthage/Carthage) is a decentralized dependency manager that builds your dependencies and provides you with binary frameworks. To integrate Alamofire into your Xcode project using Carthage, specify it in your `Cartfile`:
+
+```ogdl
+github "Alamofire/Alamofire" "5.0.0-rc.3"
+```
+
+### Swift Package Manager
+
+The [Swift Package Manager](https://swift.org/package-manager/) is a tool for automating the distribution of Swift code and is integrated into the `swift` compiler. It is in early development, but Alamofire does support its use on supported platforms.
+
+Once you have your Swift package set up, adding Alamofire as a dependency is as easy as adding it to the `dependencies` value of your `Package.swift`.
+
+```swift
+dependencies: [
+    .package(url: "https://github.com/Alamofire/Alamofire.git", from: "5.0.0-rc.3")
+]
+```
+
+### Manually
+
+If you prefer not to use any of the aforementioned dependency managers, you can integrate Alamofire into your project manually.
+
+#### Embedded Framework
+
+- Open up Terminal, `cd` into your top-level project directory, and run the following command "if" your project is not initialized as a git repository:
+
+  ```bash
+  $ git init
+  ```
+
+- Add Alamofire as a git [submodule](https://git-scm.com/docs/git-submodule) by running the following command:
+
+  ```bash
+  $ git submodule add https://github.com/Alamofire/Alamofire.git
+  ```
+
+- Open the new `Alamofire` folder, and drag the `Alamofire.xcodeproj` into the Project Navigator of your application's Xcode project.
+
+    > It should appear nested underneath your application's blue project icon. Whether it is above or below all the other Xcode groups does not matter.
+
+- Select the `Alamofire.xcodeproj` in the Project Navigator and verify the deployment target matches that of your application target.
+- Next, select your application project in the Project Navigator (blue project icon) to navigate to the target configuration window and select the application target under the "Targets" heading in the sidebar.
+- In the tab bar at the top of that window, open the "General" panel.
+- Click on the `+` button under the "Embedded Binaries" section.
+- You will see two different `Alamofire.xcodeproj` folders each with two different versions of the `Alamofire.framework` nested inside a `Products` folder.
+
+    > It does not matter which `Products` folder you choose from, but it does matter whether you choose the top or bottom `Alamofire.framework`.
+
+- Select the top `Alamofire.framework` for iOS and the bottom one for macOS.
+
+    > You can verify which one you selected by inspecting the build log for your project. The build target for `Alamofire` will be listed as either `Alamofire iOS`, `Alamofire macOS`, `Alamofire tvOS` or `Alamofire watchOS`.
+
+- And that's it!
+
+  > The `Alamofire.framework` is automagically added as a target dependency, linked framework and embedded framework in a copy files build phase which is all you need to build on the simulator and a device.
+
+## Open Radars
+
+The following radars have some effect on the current implementation of Alamofire.
+
+- [`rdar://21349340`](http://www.openradar.me/radar?id=5517037090635776) - Compiler throwing warning due to toll-free bridging issue in test case
+- `rdar://26870455` - Background URL Session Configurations do not work in the simulator
+- `rdar://26849668` - Some URLProtocol APIs do not properly handle `URLRequest`
+
+## Resolved Radars
+
+The following radars have been resolved over time after being filed against the Alamofire project.
+
+- [`rdar://26761490`](http://www.openradar.me/radar?id=5010235949318144) - Swift string interpolation causing memory leak with common usage.
+  - (Resolved): 9/1/17 in Xcode 9 beta 6.
+- [`rdar://36082113`](http://openradar.appspot.com/radar?id=4942308441063424) - `URLSessionTaskMetrics` failing to link on watchOS 3.0+
+  - (Resolved): Just add `CFNetwork` to your linked frameworks.
+  
+## FAQ
+
+### What's the origin of the name Alamofire?
+
+Alamofire is named after the [Alamo Fire flower](https://aggie-horticulture.tamu.edu/wildseed/alamofire.html), a hybrid variant of the Bluebonnet, the official state flower of Texas.
+
+## Credits
+
+Alamofire is owned and maintained by the [Alamofire Software Foundation](http://alamofire.org). You can follow them on Twitter at [@AlamofireSF](https://twitter.com/AlamofireSF) for project updates and releases.
+
+### Security Disclosure
+
+If you believe you have identified a security vulnerability with Alamofire, you should report it as soon as possible via email to security@alamofire.org. Please do not post it to a public issue tracker.
+
+## Donations
+
+The [ASF](https://github.com/Alamofire/Foundation#members) is looking to raise money to officially stay registered as a federal non-profit organization.
+Registering will allow us members to gain some legal protections and also allow us to put donations to use, tax free.
+Donating to the ASF will enable us to:
+
+- Pay our yearly legal fees to keep the non-profit in good status
+- Pay for our mail servers to help us stay on top of all questions and security issues
+- Potentially fund test servers to make it easier for us to test the edge cases
+- Potentially fund developers to work on one of our projects full-time
+
+The community adoption of the ASF libraries has been amazing.
+We are greatly humbled by your enthusiasm around the projects, and want to continue to do everything we can to move the needle forward.
+With your continued support, the ASF will be able to improve its reach and also provide better legal safety for the core members.
+If you use any of our libraries for work, see if your employers would be interested in donating.
+Any amount you can donate today to help us reach our goal would be greatly appreciated.
+
+[![paypal](https://www.paypalobjects.com/en_US/i/btn/btn_donateCC_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W34WPEE74APJQ)
+
+## License
+
+Alamofire is released under the MIT license. [See LICENSE](https://github.com/Alamofire/Alamofire/blob/master/LICENSE) for details.

trolley/Pods/Alamofire/Source/AFError.swift

@@ -0,0 +1,840 @@
+//
+//  AFError.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// `AFError` is the error type returned by Alamofire. It encompasses a few different types of errors, each with
+/// their own associated reasons.
+public enum AFError: Error {
+    /// The underlying reason the `.multipartEncodingFailed` error occurred.
+    public enum MultipartEncodingFailureReason {
+        /// The `fileURL` provided for reading an encodable body part isn't a file `URL`.
+        case bodyPartURLInvalid(url: URL)
+        /// The filename of the `fileURL` provided has either an empty `lastPathComponent` or `pathExtension.
+        case bodyPartFilenameInvalid(in: URL)
+        /// The file at the `fileURL` provided was not reachable.
+        case bodyPartFileNotReachable(at: URL)
+        /// Attempting to check the reachability of the `fileURL` provided threw an error.
+        case bodyPartFileNotReachableWithError(atURL: URL, error: Error)
+        /// The file at the `fileURL` provided is actually a directory.
+        case bodyPartFileIsDirectory(at: URL)
+        /// The size of the file at the `fileURL` provided was not returned by the system.
+        case bodyPartFileSizeNotAvailable(at: URL)
+        /// The attempt to find the size of the file at the `fileURL` provided threw an error.
+        case bodyPartFileSizeQueryFailedWithError(forURL: URL, error: Error)
+        /// An `InputStream` could not be created for the provided `fileURL`.
+        case bodyPartInputStreamCreationFailed(for: URL)
+        /// An `OutputStream` could not be created when attempting to write the encoded data to disk.
+        case outputStreamCreationFailed(for: URL)
+        /// The encoded body data could not be written to disk because a file already exists at the provided `fileURL`.
+        case outputStreamFileAlreadyExists(at: URL)
+        /// The `fileURL` provided for writing the encoded body data to disk is not a file `URL`.
+        case outputStreamURLInvalid(url: URL)
+        /// The attempt to write the encoded body data to disk failed with an underlying error.
+        case outputStreamWriteFailed(error: Error)
+        /// The attempt to read an encoded body part `InputStream` failed with underlying system error.
+        case inputStreamReadFailed(error: Error)
+    }
+
+    /// The underlying reason the `.parameterEncodingFailed` error occurred.
+    public enum ParameterEncodingFailureReason {
+        /// The `URLRequest` did not have a `URL` to encode.
+        case missingURL
+        /// JSON serialization failed with an underlying system error during the encoding process.
+        case jsonEncodingFailed(error: Error)
+        /// Custom parameter encoding failed due to the associated `Error`.
+        case customEncodingFailed(error: Error)
+    }
+
+    /// The underlying reason the `.parameterEncoderFailed` error occurred.
+    public enum ParameterEncoderFailureReason {
+        /// Possible missing components.
+        public enum RequiredComponent {
+            /// The `URL` was missing or unable to be extracted from the passed `URLRequest` or during encoding.
+            case url
+            /// The `HTTPMethod` could not be extracted from the passed `URLRequest`.
+            case httpMethod(rawValue: String)
+        }
+
+        /// A `RequiredComponent` was missing during encoding.
+        case missingRequiredComponent(RequiredComponent)
+        /// The underlying encoder failed with the associated error.
+        case encoderFailed(error: Error)
+    }
+
+    /// The underlying reason the `.responseValidationFailed` error occurred.
+    public enum ResponseValidationFailureReason {
+        /// The data file containing the server response did not exist.
+        case dataFileNil
+        /// The data file containing the server response at the associated `URL` could not be read.
+        case dataFileReadFailed(at: URL)
+        /// The response did not contain a `Content-Type` and the `acceptableContentTypes` provided did not contain a
+        /// wildcard type.
+        case missingContentType(acceptableContentTypes: [String])
+        /// The response `Content-Type` did not match any type in the provided `acceptableContentTypes`.
+        case unacceptableContentType(acceptableContentTypes: [String], responseContentType: String)
+        /// The response status code was not acceptable.
+        case unacceptableStatusCode(code: Int)
+        /// Custom response validation failed due to the associated `Error`.
+        case customValidationFailed(error: Error)
+    }
+
+    /// The underlying reason the response serialization error occurred.
+    public enum ResponseSerializationFailureReason {
+        /// The server response contained no data or the data was zero length.
+        case inputDataNilOrZeroLength
+        /// The file containing the server response did not exist.
+        case inputFileNil
+        /// The file containing the server response could not be read from the associated `URL`.
+        case inputFileReadFailed(at: URL)
+        /// String serialization failed using the provided `String.Encoding`.
+        case stringSerializationFailed(encoding: String.Encoding)
+        /// JSON serialization failed with an underlying system error.
+        case jsonSerializationFailed(error: Error)
+        /// A `DataDecoder` failed to decode the response due to the associated `Error`.
+        case decodingFailed(error: Error)
+        /// A custom response serializer failed due to the associated `Error`.
+        case customSerializationFailed(error: Error)
+        /// Generic serialization failed for an empty response that wasn't type `Empty` but instead the associated type.
+        case invalidEmptyResponse(type: String)
+    }
+
+    /// Underlying reason a server trust evaluation error occurred.
+    public enum ServerTrustFailureReason {
+        /// The output of a server trust evaluation.
+        public struct Output {
+            /// The host for which the evaluation was performed.
+            public let host: String
+            /// The `SecTrust` value which was evaluated.
+            public let trust: SecTrust
+            /// The `OSStatus` of evaluation operation.
+            public let status: OSStatus
+            /// The result of the evaluation operation.
+            public let result: SecTrustResultType
+
+            /// Creates an `Output` value from the provided values.
+            init(_ host: String, _ trust: SecTrust, _ status: OSStatus, _ result: SecTrustResultType) {
+                self.host = host
+                self.trust = trust
+                self.status = status
+                self.result = result
+            }
+        }
+
+        /// No `ServerTrustEvaluator` was found for the associated host.
+        case noRequiredEvaluator(host: String)
+        /// No certificates were found with which to perform the trust evaluation.
+        case noCertificatesFound
+        /// No public keys were found with which to perform the trust evaluation.
+        case noPublicKeysFound
+        /// During evaluation, application of the associated `SecPolicy` failed.
+        case policyApplicationFailed(trust: SecTrust, policy: SecPolicy, status: OSStatus)
+        /// During evaluation, setting the associated anchor certificates failed.
+        case settingAnchorCertificatesFailed(status: OSStatus, certificates: [SecCertificate])
+        /// During evaluation, creation of the revocation policy failed.
+        case revocationPolicyCreationFailed
+        /// `SecTrust` evaluation failed with the associated `Error`, if one was produced.
+        case trustEvaluationFailed(error: Error?)
+        /// Default evaluation failed with the associated `Output`.
+        case defaultEvaluationFailed(output: Output)
+        /// Host validation failed with the associated `Output`.
+        case hostValidationFailed(output: Output)
+        /// Revocation check failed with the associated `Output` and options.
+        case revocationCheckFailed(output: Output, options: RevocationTrustEvaluator.Options)
+        /// Certificate pinning failed.
+        case certificatePinningFailed(host: String, trust: SecTrust, pinnedCertificates: [SecCertificate], serverCertificates: [SecCertificate])
+        /// Public key pinning failed.
+        case publicKeyPinningFailed(host: String, trust: SecTrust, pinnedKeys: [SecKey], serverKeys: [SecKey])
+        /// Custom server trust evaluation failed due to the associated `Error`.
+        case customEvaluationFailed(error: Error)
+    }
+
+    /// The underlying reason the `.urlRequestValidationFailed`
+    public enum URLRequestValidationFailureReason {
+        /// URLRequest with GET method had body data.
+        case bodyDataInGETRequest(Data)
+    }
+
+    ///  `UploadableConvertible` threw an error in `createUploadable()`.
+    case createUploadableFailed(error: Error)
+    ///  `URLRequestConvertible` threw an error in `asURLRequest()`.
+    case createURLRequestFailed(error: Error)
+    /// `SessionDelegate` threw an error while attempting to move downloaded file to destination URL.
+    case downloadedFileMoveFailed(error: Error, source: URL, destination: URL)
+    /// `Request` was explicitly cancelled.
+    case explicitlyCancelled
+    /// `URLConvertible` type failed to create a valid `URL`.
+    case invalidURL(url: URLConvertible)
+    /// Multipart form encoding failed.
+    case multipartEncodingFailed(reason: MultipartEncodingFailureReason)
+    /// `ParameterEncoding` threw an error during the encoding process.
+    case parameterEncodingFailed(reason: ParameterEncodingFailureReason)
+    /// `ParameterEncoder` threw an error while running the encoder.
+    case parameterEncoderFailed(reason: ParameterEncoderFailureReason)
+    /// `RequestAdapter` threw an error during adaptation.
+    case requestAdaptationFailed(error: Error)
+    /// `RequestRetrier` threw an error during the request retry process.
+    case requestRetryFailed(retryError: Error, originalError: Error)
+    /// Response validation failed.
+    case responseValidationFailed(reason: ResponseValidationFailureReason)
+    /// Response serialization failed.
+    case responseSerializationFailed(reason: ResponseSerializationFailureReason)
+    /// `ServerTrustEvaluating` instance threw an error during trust evaluation.
+    case serverTrustEvaluationFailed(reason: ServerTrustFailureReason)
+    /// `Session` which issued the `Request` was deinitialized, most likely because its reference went out of scope.
+    case sessionDeinitialized
+    /// `Session` was explicitly invalidated, possibly with the `Error` produced by the underlying `URLSession`.
+    case sessionInvalidated(error: Error?)
+    /// `URLSessionTask` completed with error.
+    case sessionTaskFailed(error: Error)
+    /// `URLRequest` failed validation.
+    case urlRequestValidationFailed(reason: URLRequestValidationFailureReason)
+}
+
+extension Error {
+    /// Returns the instance cast as an `AFError`.
+    public var asAFError: AFError? {
+        return self as? AFError
+    }
+
+    /// Returns the instance cast as an `AFError`. If casting fails, a `fatalError` with the specified `message` is thrown.
+    public func asAFError(orFailWith message: @autoclosure () -> String, file: StaticString = #file, line: UInt = #line) -> AFError {
+        guard let afError = self as? AFError else {
+            fatalError(message(), file: file, line: line)
+        }
+        return afError
+    }
+
+    /// Casts the instance as `AFError` or returns `defaultAFError`
+    func asAFError(or defaultAFError: @autoclosure () -> AFError) -> AFError {
+        return self as? AFError ?? defaultAFError()
+    }
+}
+
+// MARK: - Error Booleans
+
+extension AFError {
+    /// Returns whether the instance is `.sessionDeinitialized`.
+    public var isSessionDeinitializedError: Bool {
+        if case .sessionDeinitialized = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `.sessionInvalidated`.
+    public var isSessionInvalidatedError: Bool {
+        if case .sessionInvalidated = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `.explicitlyCancelled`.
+    public var isExplicitlyCancelledError: Bool {
+        if case .explicitlyCancelled = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `.invalidURL`.
+    public var isInvalidURLError: Bool {
+        if case .invalidURL = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `.parameterEncodingFailed`. When `true`, the `underlyingError` property will
+    /// contain the associated value.
+    public var isParameterEncodingError: Bool {
+        if case .parameterEncodingFailed = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `.parameterEncoderFailed`. When `true`, the `underlyingError` property will
+    /// contain the associated value.
+    public var isParameterEncoderError: Bool {
+        if case .parameterEncoderFailed = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `.multipartEncodingFailed`. When `true`, the `url` and `underlyingError`
+    /// properties will contain the associated values.
+    public var isMultipartEncodingError: Bool {
+        if case .multipartEncodingFailed = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `.requestAdaptationFailed`. When `true`, the `underlyingError` property will
+    /// contain the associated value.
+    public var isRequestAdaptationError: Bool {
+        if case .requestAdaptationFailed = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `.responseValidationFailed`. When `true`, the `acceptableContentTypes`,
+    /// `responseContentType`,  `responseCode`, and `underlyingError` properties will contain the associated values.
+    public var isResponseValidationError: Bool {
+        if case .responseValidationFailed = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `.responseSerializationFailed`. When `true`, the `failedStringEncoding` and
+    /// `underlyingError` properties will contain the associated values.
+    public var isResponseSerializationError: Bool {
+        if case .responseSerializationFailed = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `.serverTrustEvaluationFailed`. When `true`, the `underlyingError` property will
+    /// contain the associated value.
+    public var isServerTrustEvaluationError: Bool {
+        if case .serverTrustEvaluationFailed = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `requestRetryFailed`. When `true`, the `underlyingError` property will
+    /// contain the associated value.
+    public var isRequestRetryError: Bool {
+        if case .requestRetryFailed = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `createUploadableFailed`. When `true`, the `underlyingError` property will
+    /// contain the associated value.
+    public var isCreateUploadableError: Bool {
+        if case .createUploadableFailed = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `createURLRequestFailed`. When `true`, the `underlyingError` property will
+    /// contain the associated value.
+    public var isCreateURLRequestError: Bool {
+        if case .createURLRequestFailed = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `downloadedFileMoveFailed`. When `true`, the `destination` and `underlyingError` properties will
+    /// contain the associated values.
+    public var isDownloadedFileMoveError: Bool {
+        if case .downloadedFileMoveFailed = self { return true }
+        return false
+    }
+
+    /// Returns whether the instance is `createURLRequestFailed`. When `true`, the `underlyingError` property will
+    /// contain the associated value.
+    public var isSessionTaskError: Bool {
+        if case .sessionTaskFailed = self { return true }
+        return false
+    }
+}
+
+// MARK: - Convenience Properties
+
+extension AFError {
+    /// The `URLConvertible` associated with the error.
+    public var urlConvertible: URLConvertible? {
+        guard case let .invalidURL(url) = self else { return nil }
+        return url
+    }
+
+    /// The `URL` associated with the error.
+    public var url: URL? {
+        guard case let .multipartEncodingFailed(reason) = self else { return nil }
+        return reason.url
+    }
+
+    /// The underlying `Error` responsible for generating the failure associated with `.sessionInvalidated`,
+    /// `.parameterEncodingFailed`, `.parameterEncoderFailed`, `.multipartEncodingFailed`, `.requestAdaptationFailed`,
+    /// `.responseSerializationFailed`, `.requestRetryFailed` errors.
+    public var underlyingError: Error? {
+        switch self {
+        case let .multipartEncodingFailed(reason):
+            return reason.underlyingError
+        case let .parameterEncodingFailed(reason):
+            return reason.underlyingError
+        case let .parameterEncoderFailed(reason):
+            return reason.underlyingError
+        case let .requestAdaptationFailed(error):
+            return error
+        case let .requestRetryFailed(retryError, _):
+            return retryError
+        case let .responseValidationFailed(reason):
+            return reason.underlyingError
+        case let .responseSerializationFailed(reason):
+            return reason.underlyingError
+        case let .serverTrustEvaluationFailed(reason):
+            return reason.underlyingError
+        case let .sessionInvalidated(error):
+            return error
+        case let .createUploadableFailed(error):
+            return error
+        case let .createURLRequestFailed(error):
+            return error
+        case let .downloadedFileMoveFailed(error, _, _):
+            return error
+        case let .sessionTaskFailed(error):
+            return error
+        case .explicitlyCancelled,
+             .invalidURL,
+             .sessionDeinitialized,
+             .urlRequestValidationFailed:
+            return nil
+        }
+    }
+
+    /// The acceptable `Content-Type`s of a `.responseValidationFailed` error.
+    public var acceptableContentTypes: [String]? {
+        guard case let .responseValidationFailed(reason) = self else { return nil }
+        return reason.acceptableContentTypes
+    }
+
+    /// The response `Content-Type` of a `.responseValidationFailed` error.
+    public var responseContentType: String? {
+        guard case let .responseValidationFailed(reason) = self else { return nil }
+        return reason.responseContentType
+    }
+
+    /// The response code of a `.responseValidationFailed` error.
+    public var responseCode: Int? {
+        guard case let .responseValidationFailed(reason) = self else { return nil }
+        return reason.responseCode
+    }
+
+    /// The `String.Encoding` associated with a failed `.stringResponse()` call.
+    public var failedStringEncoding: String.Encoding? {
+        guard case let .responseSerializationFailed(reason) = self else { return nil }
+        return reason.failedStringEncoding
+    }
+
+    /// The `source` URL of a `.downloadedFileMoveFailed` error.
+    public var sourceURL: URL? {
+        guard case let .downloadedFileMoveFailed(_, source, _) = self else { return nil }
+        return source
+    }
+
+    /// The `destination` URL of a `.downloadedFileMoveFailed` error.
+    public var destinationURL: URL? {
+        guard case let .downloadedFileMoveFailed(_, _, destination) = self else { return nil }
+        return destination
+    }
+}
+
+extension AFError.ParameterEncodingFailureReason {
+    var underlyingError: Error? {
+        switch self {
+        case let .jsonEncodingFailed(error),
+             let .customEncodingFailed(error):
+            return error
+        case .missingURL:
+            return nil
+        }
+    }
+}
+
+extension AFError.ParameterEncoderFailureReason {
+    var underlyingError: Error? {
+        switch self {
+        case let .encoderFailed(error):
+            return error
+        case .missingRequiredComponent:
+            return nil
+        }
+    }
+}
+
+extension AFError.MultipartEncodingFailureReason {
+    var url: URL? {
+        switch self {
+        case let .bodyPartURLInvalid(url),
+             let .bodyPartFilenameInvalid(url),
+             let .bodyPartFileNotReachable(url),
+             let .bodyPartFileIsDirectory(url),
+             let .bodyPartFileSizeNotAvailable(url),
+             let .bodyPartInputStreamCreationFailed(url),
+             let .outputStreamCreationFailed(url),
+             let .outputStreamFileAlreadyExists(url),
+             let .outputStreamURLInvalid(url),
+             let .bodyPartFileNotReachableWithError(url, _),
+             let .bodyPartFileSizeQueryFailedWithError(url, _):
+            return url
+        case .outputStreamWriteFailed,
+             .inputStreamReadFailed:
+            return nil
+        }
+    }
+
+    var underlyingError: Error? {
+        switch self {
+        case let .bodyPartFileNotReachableWithError(_, error),
+             let .bodyPartFileSizeQueryFailedWithError(_, error),
+             let .outputStreamWriteFailed(error),
+             let .inputStreamReadFailed(error):
+            return error
+        case .bodyPartURLInvalid,
+             .bodyPartFilenameInvalid,
+             .bodyPartFileNotReachable,
+             .bodyPartFileIsDirectory,
+             .bodyPartFileSizeNotAvailable,
+             .bodyPartInputStreamCreationFailed,
+             .outputStreamCreationFailed,
+             .outputStreamFileAlreadyExists,
+             .outputStreamURLInvalid:
+            return nil
+        }
+    }
+}
+
+extension AFError.ResponseValidationFailureReason {
+    var acceptableContentTypes: [String]? {
+        switch self {
+        case let .missingContentType(types),
+             let .unacceptableContentType(types, _):
+            return types
+        case .dataFileNil,
+             .dataFileReadFailed,
+             .unacceptableStatusCode,
+             .customValidationFailed:
+            return nil
+        }
+    }
+
+    var responseContentType: String? {
+        switch self {
+        case let .unacceptableContentType(_, responseType):
+            return responseType
+        case .dataFileNil,
+             .dataFileReadFailed,
+             .missingContentType,
+             .unacceptableStatusCode,
+             .customValidationFailed:
+            return nil
+        }
+    }
+
+    var responseCode: Int? {
+        switch self {
+        case let .unacceptableStatusCode(code):
+            return code
+        case .dataFileNil,
+             .dataFileReadFailed,
+             .missingContentType,
+             .unacceptableContentType,
+             .customValidationFailed:
+            return nil
+        }
+    }
+
+    var underlyingError: Error? {
+        switch self {
+        case let .customValidationFailed(error):
+            return error
+        case .dataFileNil,
+             .dataFileReadFailed,
+             .missingContentType,
+             .unacceptableContentType,
+             .unacceptableStatusCode:
+            return nil
+        }
+    }
+}
+
+extension AFError.ResponseSerializationFailureReason {
+    var failedStringEncoding: String.Encoding? {
+        switch self {
+        case let .stringSerializationFailed(encoding):
+            return encoding
+        case .inputDataNilOrZeroLength,
+             .inputFileNil,
+             .inputFileReadFailed(_),
+             .jsonSerializationFailed(_),
+             .decodingFailed(_),
+             .customSerializationFailed(_),
+             .invalidEmptyResponse:
+            return nil
+        }
+    }
+
+    var underlyingError: Error? {
+        switch self {
+        case let .jsonSerializationFailed(error),
+             let .decodingFailed(error),
+             let .customSerializationFailed(error):
+            return error
+        case .inputDataNilOrZeroLength,
+             .inputFileNil,
+             .inputFileReadFailed,
+             .stringSerializationFailed,
+             .invalidEmptyResponse:
+            return nil
+        }
+    }
+}
+
+extension AFError.ServerTrustFailureReason {
+    var output: AFError.ServerTrustFailureReason.Output? {
+        switch self {
+        case let .defaultEvaluationFailed(output),
+             let .hostValidationFailed(output),
+             let .revocationCheckFailed(output, _):
+            return output
+        case .noRequiredEvaluator,
+             .noCertificatesFound,
+             .noPublicKeysFound,
+             .policyApplicationFailed,
+             .settingAnchorCertificatesFailed,
+             .revocationPolicyCreationFailed,
+             .trustEvaluationFailed,
+             .certificatePinningFailed,
+             .publicKeyPinningFailed,
+             .customEvaluationFailed:
+            return nil
+        }
+    }
+
+    var underlyingError: Error? {
+        switch self {
+        case let .customEvaluationFailed(error):
+            return error
+        case let .trustEvaluationFailed(error):
+            return error
+        case .noRequiredEvaluator,
+             .noCertificatesFound,
+             .noPublicKeysFound,
+             .policyApplicationFailed,
+             .settingAnchorCertificatesFailed,
+             .revocationPolicyCreationFailed,
+             .defaultEvaluationFailed,
+             .hostValidationFailed,
+             .revocationCheckFailed,
+             .certificatePinningFailed,
+             .publicKeyPinningFailed:
+            return nil
+        }
+    }
+}
+
+// MARK: - Error Descriptions
+
+extension AFError: LocalizedError {
+    public var errorDescription: String? {
+        switch self {
+        case .explicitlyCancelled:
+            return "Request explicitly cancelled."
+        case let .invalidURL(url):
+            return "URL is not valid: \(url)"
+        case let .parameterEncodingFailed(reason):
+            return reason.localizedDescription
+        case let .parameterEncoderFailed(reason):
+            return reason.localizedDescription
+        case let .multipartEncodingFailed(reason):
+            return reason.localizedDescription
+        case let .requestAdaptationFailed(error):
+            return "Request adaption failed with error: \(error.localizedDescription)"
+        case let .responseValidationFailed(reason):
+            return reason.localizedDescription
+        case let .responseSerializationFailed(reason):
+            return reason.localizedDescription
+        case let .requestRetryFailed(retryError, originalError):
+            return """
+            Request retry failed with retry error: \(retryError.localizedDescription), \
+            original error: \(originalError.localizedDescription)
+            """
+        case .sessionDeinitialized:
+            return """
+            Session was invalidated without error, so it was likely deinitialized unexpectedly. \
+            Be sure to retain a reference to your Session for the duration of your requests.
+            """
+        case let .sessionInvalidated(error):
+            return "Session was invalidated with error: \(error?.localizedDescription ?? "No description.")"
+        case let .serverTrustEvaluationFailed(reason):
+            return "Server trust evaluation failed due to reason: \(reason.localizedDescription)"
+        case let .urlRequestValidationFailed(reason):
+            return "URLRequest validation failed due to reason: \(reason.localizedDescription)"
+        case let .createUploadableFailed(error):
+            return "Uploadable creation failed with error: \(error.localizedDescription)"
+        case let .createURLRequestFailed(error):
+            return "URLRequest creation failed with error: \(error.localizedDescription)"
+        case let .downloadedFileMoveFailed(error, source, destination):
+            return "Moving downloaded file from: \(source) to: \(destination) failed with error: \(error.localizedDescription)"
+        case let .sessionTaskFailed(error):
+            return "URLSessionTask failed with error: \(error.localizedDescription)"
+        }
+    }
+}
+
+extension AFError.ParameterEncodingFailureReason {
+    var localizedDescription: String {
+        switch self {
+        case .missingURL:
+            return "URL request to encode was missing a URL"
+        case let .jsonEncodingFailed(error):
+            return "JSON could not be encoded because of error:\n\(error.localizedDescription)"
+        case let .customEncodingFailed(error):
+            return "Custom parameter encoder failed with error: \(error.localizedDescription)"
+        }
+    }
+}
+
+extension AFError.ParameterEncoderFailureReason {
+    var localizedDescription: String {
+        switch self {
+        case let .missingRequiredComponent(component):
+            return "Encoding failed due to a missing request component: \(component)"
+        case let .encoderFailed(error):
+            return "The underlying encoder failed with the error: \(error)"
+        }
+    }
+}
+
+extension AFError.MultipartEncodingFailureReason {
+    var localizedDescription: String {
+        switch self {
+        case let .bodyPartURLInvalid(url):
+            return "The URL provided is not a file URL: \(url)"
+        case let .bodyPartFilenameInvalid(url):
+            return "The URL provided does not have a valid filename: \(url)"
+        case let .bodyPartFileNotReachable(url):
+            return "The URL provided is not reachable: \(url)"
+        case let .bodyPartFileNotReachableWithError(url, error):
+            return """
+            The system returned an error while checking the provided URL for reachability.
+            URL: \(url)
+            Error: \(error)
+            """
+        case let .bodyPartFileIsDirectory(url):
+            return "The URL provided is a directory: \(url)"
+        case let .bodyPartFileSizeNotAvailable(url):
+            return "Could not fetch the file size from the provided URL: \(url)"
+        case let .bodyPartFileSizeQueryFailedWithError(url, error):
+            return """
+            The system returned an error while attempting to fetch the file size from the provided URL.
+            URL: \(url)
+            Error: \(error)
+            """
+        case let .bodyPartInputStreamCreationFailed(url):
+            return "Failed to create an InputStream for the provided URL: \(url)"
+        case let .outputStreamCreationFailed(url):
+            return "Failed to create an OutputStream for URL: \(url)"
+        case let .outputStreamFileAlreadyExists(url):
+            return "A file already exists at the provided URL: \(url)"
+        case let .outputStreamURLInvalid(url):
+            return "The provided OutputStream URL is invalid: \(url)"
+        case let .outputStreamWriteFailed(error):
+            return "OutputStream write failed with error: \(error)"
+        case let .inputStreamReadFailed(error):
+            return "InputStream read failed with error: \(error)"
+        }
+    }
+}
+
+extension AFError.ResponseSerializationFailureReason {
+    var localizedDescription: String {
+        switch self {
+        case .inputDataNilOrZeroLength:
+            return "Response could not be serialized, input data was nil or zero length."
+        case .inputFileNil:
+            return "Response could not be serialized, input file was nil."
+        case let .inputFileReadFailed(url):
+            return "Response could not be serialized, input file could not be read: \(url)."
+        case let .stringSerializationFailed(encoding):
+            return "String could not be serialized with encoding: \(encoding)."
+        case let .jsonSerializationFailed(error):
+            return "JSON could not be serialized because of error:\n\(error.localizedDescription)"
+        case let .invalidEmptyResponse(type):
+            return """
+            Empty response could not be serialized to type: \(type). \
+            Use Empty as the expected type for such responses.
+            """
+        case let .decodingFailed(error):
+            return "Response could not be decoded because of error:\n\(error.localizedDescription)"
+        case let .customSerializationFailed(error):
+            return "Custom response serializer failed with error:\n\(error.localizedDescription)"
+        }
+    }
+}
+
+extension AFError.ResponseValidationFailureReason {
+    var localizedDescription: String {
+        switch self {
+        case .dataFileNil:
+            return "Response could not be validated, data file was nil."
+        case let .dataFileReadFailed(url):
+            return "Response could not be validated, data file could not be read: \(url)."
+        case let .missingContentType(types):
+            return """
+            Response Content-Type was missing and acceptable content types \
+            (\(types.joined(separator: ","))) do not match "*/*".
+            """
+        case let .unacceptableContentType(acceptableTypes, responseType):
+            return """
+            Response Content-Type "\(responseType)" does not match any acceptable types: \
+            \(acceptableTypes.joined(separator: ",")).
+            """
+        case let .unacceptableStatusCode(code):
+            return "Response status code was unacceptable: \(code)."
+        case let .customValidationFailed(error):
+            return "Custom response validation failed with error: \(error.localizedDescription)"
+        }
+    }
+}
+
+extension AFError.ServerTrustFailureReason {
+    var localizedDescription: String {
+        switch self {
+        case let .noRequiredEvaluator(host):
+            return "A ServerTrustEvaluating value is required for host \(host) but none was found."
+        case .noCertificatesFound:
+            return "No certificates were found or provided for evaluation."
+        case .noPublicKeysFound:
+            return "No public keys were found or provided for evaluation."
+        case .policyApplicationFailed:
+            return "Attempting to set a SecPolicy failed."
+        case .settingAnchorCertificatesFailed:
+            return "Attempting to set the provided certificates as anchor certificates failed."
+        case .revocationPolicyCreationFailed:
+            return "Attempting to create a revocation policy failed."
+        case let .trustEvaluationFailed(error):
+            return "SecTrust evaluation failed with error: \(error?.localizedDescription ?? "None")"
+        case let .defaultEvaluationFailed(output):
+            return "Default evaluation failed for host \(output.host)."
+        case let .hostValidationFailed(output):
+            return "Host validation failed for host \(output.host)."
+        case let .revocationCheckFailed(output, _):
+            return "Revocation check failed for host \(output.host)."
+        case let .certificatePinningFailed(host, _, _, _):
+            return "Certificate pinning failed for host \(host)."
+        case let .publicKeyPinningFailed(host, _, _, _):
+            return "Public key pinning failed for host \(host)."
+        case let .customEvaluationFailed(error):
+            return "Custom trust evaluation failed with error: \(error.localizedDescription)"
+        }
+    }
+}
+
+extension AFError.URLRequestValidationFailureReason {
+    var localizedDescription: String {
+        switch self {
+        case let .bodyDataInGETRequest(data):
+            return """
+            Invalid URLRequest: Requests with GET method cannot have body data:
+            \(String(decoding: data, as: UTF8.self))
+            """
+        }
+    }
+}

trolley/Pods/Alamofire/Source/Alamofire.swift

@@ -0,0 +1,520 @@
+//
+//  Alamofire.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// Global namespace containing API for the `default` `Session` instance.
+public enum AF {
+    /// Current Alamofire version. Necessary since SPM doesn't use dynamic libraries. Plus this will be more accurate.
+    static let version = "5.0.0-rc.3"
+
+    // MARK: - Data Request
+
+    /// Creates a `DataRequest` using `Session.default` to retrieve the contents of the specified `url` using the
+    /// `method`, `parameters`, `encoding`, and `headers` provided.
+    ///
+    /// - Parameters:
+    ///   - url:           The `URLConvertible` value.
+    ///   - method:        The `HTTPMethod`, `.get` by default.
+    ///   - parameters:    The `Parameters`, `nil` by default.
+    ///   - encoding:      The `ParameterEncoding`, `URLEncoding.default` by default.
+    ///   - headers:       The `HTTPHeaders`, `nil` by default.
+    ///   - interceptor:   The `RequestInterceptor`, `nil` by default.
+    ///
+    /// - Returns: The created `DataRequest`.
+    public static func request(_ url: URLConvertible,
+                               method: HTTPMethod = .get,
+                               parameters: Parameters? = nil,
+                               encoding: ParameterEncoding = URLEncoding.default,
+                               headers: HTTPHeaders? = nil,
+                               interceptor: RequestInterceptor? = nil) -> DataRequest {
+        return Session.default.request(url,
+                                       method: method,
+                                       parameters: parameters,
+                                       encoding: encoding,
+                                       headers: headers,
+                                       interceptor: interceptor)
+    }
+
+    /// Creates a `DataRequest` using `Session.default` to retrieve the contents of the specified `url` using the
+    /// `method`, `parameters`, `encoding`, and `headers` provided.
+    ///
+    /// - Parameters:
+    ///   - url:           The `URLConvertible` value.
+    ///   - method:        The `HTTPMethod`, `.get` by default.
+    ///   - parameters:    The `Encodable` parameters, `nil` by default.
+    ///   - encoding:      The `ParameterEncoder`, `URLEncodedFormParameterEncoder.default` by default.
+    ///   - headers:       The `HTTPHeaders`, `nil` by default.
+    ///   - interceptor:   The `RequestInterceptor`, `nil` by default.
+    ///
+    /// - Returns: The created `DataRequest`.
+    public static func request<Parameters: Encodable>(_ url: URLConvertible,
+                                                      method: HTTPMethod = .get,
+                                                      parameters: Parameters? = nil,
+                                                      encoder: ParameterEncoder = URLEncodedFormParameterEncoder.default,
+                                                      headers: HTTPHeaders? = nil,
+                                                      interceptor: RequestInterceptor? = nil) -> DataRequest {
+        return Session.default.request(url,
+                                       method: method,
+                                       parameters: parameters,
+                                       encoder: encoder,
+                                       headers: headers,
+                                       interceptor: interceptor)
+    }
+
+    /// Creates a `DataRequest` using `Session.default` to execute the specified `urlRequest`.
+    ///
+    /// - Parameters:
+    ///   - urlRequest:    The `URLRequestConvertible` value.
+    ///   - interceptor:   The `RequestInterceptor`, `nil` by default.
+    ///
+    /// - Returns: The created `DataRequest`.
+    public static func request(_ urlRequest: URLRequestConvertible, interceptor: RequestInterceptor? = nil) -> DataRequest {
+        return Session.default.request(urlRequest, interceptor: interceptor)
+    }
+
+    // MARK: - Download Request
+
+    /// Creates a `DownloadRequest` using `Session.default` to download the contents of the specified `url` to
+    /// the provided `destination` using the `method`, `parameters`, `encoding`, and `headers` provided.
+    ///
+    /// If `destination` is not specified, the download will be moved to a temporary location determined by Alamofire.
+    ///
+    /// - Parameters:
+    ///   - url:           The `URLConvertible` value.
+    ///   - method:        The `HTTPMethod`, `.get` by default.
+    ///   - parameters:    The `Parameters`, `nil` by default.
+    ///   - encoding:      The `ParameterEncoding`, `URLEncoding.default` by default.
+    ///   - headers:       The `HTTPHeaders`, `nil` by default.
+    ///   - interceptor:   The `RequestInterceptor`, `nil` by default.
+    ///   - destination:   The `DownloadRequest.Destination` closure used the determine the destination of the
+    ///                    downloaded file. `nil` by default.
+    ///
+    /// - Returns: The created `DownloadRequest`.
+    public static func download(_ url: URLConvertible,
+                                method: HTTPMethod = .get,
+                                parameters: Parameters? = nil,
+                                encoding: ParameterEncoding = URLEncoding.default,
+                                headers: HTTPHeaders? = nil,
+                                interceptor: RequestInterceptor? = nil,
+                                to destination: DownloadRequest.Destination? = nil) -> DownloadRequest {
+        return Session.default.download(url,
+                                        method: method,
+                                        parameters: parameters,
+                                        encoding: encoding,
+                                        headers: headers,
+                                        interceptor: interceptor,
+                                        to: destination)
+    }
+
+    /// Creates a `DownloadRequest` using `Session.default` to download the contents of the specified `url` to the
+    /// provided `destination` using the `method`, encodable `parameters`, `encoder`, and `headers` provided.
+    ///
+    /// - Note: If `destination` is not specified, the download will be moved to a temporary location determined by
+    ///         Alamofire.
+    ///
+    /// - Parameters:
+    ///   - url:           The `URLConvertible` value.
+    ///   - method:        The `HTTPMethod`, `.get` by default.
+    ///   - parameters:    The `Encodable` parameters, `nil` by default.
+    ///   - encoder:       The `ParameterEncoder`, `URLEncodedFormParameterEncoder.default` by default.
+    ///   - headers:       The `HTTPHeaders`, `nil` by default.
+    ///   - interceptor:   The `RequestInterceptor`, `nil` by default.
+    ///   - destination:   The `DownloadRequest.Destination` closure used the determine the destination of the
+    ///                    downloaded file. `nil` by default.
+    ///
+    /// - Returns: The created `DownloadRequest`.
+    public static func download<Parameters: Encodable>(_ url: URLConvertible,
+                                                       method: HTTPMethod = .get,
+                                                       parameters: Parameters? = nil,
+                                                       encoder: ParameterEncoder = URLEncodedFormParameterEncoder.default,
+                                                       headers: HTTPHeaders? = nil,
+                                                       interceptor: RequestInterceptor? = nil,
+                                                       to destination: DownloadRequest.Destination? = nil) -> DownloadRequest {
+        return Session.default.download(url,
+                                        method: method,
+                                        parameters: parameters,
+                                        encoder: encoder,
+                                        headers: headers,
+                                        interceptor: interceptor,
+                                        to: destination)
+    }
+
+    // MARK: URLRequest
+
+    /// Creates a `DownloadRequest` using `Session.default` to execute the specified `urlRequest` and download
+    /// the result to the provided `destination`.
+    ///
+    /// - Parameters:
+    ///   - urlRequest:    The `URLRequestConvertible` value.
+    ///   - interceptor:   The `RequestInterceptor`, `nil` by default.
+    ///   - destination:   The `DownloadRequest.Destination` closure used the determine the destination of the
+    ///                    downloaded file. `nil` by default.
+    ///
+    /// - Returns: The created `DownloadRequest`.
+    public static func download(_ urlRequest: URLRequestConvertible,
+                                interceptor: RequestInterceptor? = nil,
+                                to destination: DownloadRequest.Destination? = nil) -> DownloadRequest {
+        return Session.default.download(urlRequest, interceptor: interceptor, to: destination)
+    }
+
+    // MARK: Resume Data
+
+    /// Creates a `DownloadRequest` using the `Session.default` from the `resumeData` produced from a previous
+    /// `DownloadRequest` cancellation to retrieve the contents of the original request and save them to the `destination`.
+    ///
+    /// - Note: If `destination` is not specified, the download will be moved to a temporary location determined by
+    ///         Alamofire.
+    ///
+    /// - Note: On some versions of all Apple platforms (iOS 10 - 10.2, macOS 10.12 - 10.12.2, tvOS 10 - 10.1, watchOS 3 - 3.1.1),
+    /// `resumeData` is broken on background URL session configurations. There's an underlying bug in the `resumeData`
+    /// generation logic where the data is written incorrectly and will always fail to resume the download. For more
+    /// information about the bug and possible workarounds, please refer to the [this Stack Overflow post](http://stackoverflow.com/a/39347461/1342462).
+    ///
+    /// - Parameters:
+    ///   - resumeData:    The resume `Data`. This is an opaque blob produced by `URLSessionDownloadTask` when a task is
+    ///                    cancelled. See [Apple's documentation](https://developer.apple.com/documentation/foundation/urlsessiondownloadtask/1411634-cancel)
+    ///                    for more information.
+    ///   - interceptor:   The `RequestInterceptor`, `nil` by default.
+    ///   - destination:   The `DownloadRequest.Destination` closure used to determine the destination of the downloaded
+    ///                    file. `nil` by default.
+    ///
+    /// - Returns:         The created `DownloadRequest`.
+    public static func download(resumingWith resumeData: Data,
+                                interceptor: RequestInterceptor? = nil,
+                                to destination: DownloadRequest.Destination? = nil) -> DownloadRequest {
+        return Session.default.download(resumingWith: resumeData, interceptor: interceptor, to: destination)
+    }
+
+    // MARK: - Upload Request
+
+    // MARK: Data
+
+    /// Creates an `UploadRequest` for the given `Data`, `URLRequest` components, and `RequestInterceptor`.
+    ///
+    /// - Parameters:
+    ///   - data:        The `Data` to upload.
+    ///   - convertible: `URLConvertible` value to be used as the `URLRequest`'s `URL`.
+    ///   - method:      `HTTPMethod` for the `URLRequest`. `.post` by default.
+    ///   - headers:     `HTTPHeaders` value to be added to the `URLRequest`. `nil` by default.
+    ///   - interceptor: `RequestInterceptor` value to be used by the returned `DataRequest`. `nil` by default.
+    ///   - fileManager: `FileManager` instance to be used by the returned `UploadRequest`. `.default` instance by
+    ///                  default.
+    ///
+    /// - Returns:       The created `UploadRequest`.
+    public static func upload(_ data: Data,
+                              to convertible: URLConvertible,
+                              method: HTTPMethod = .post,
+                              headers: HTTPHeaders? = nil,
+                              interceptor: RequestInterceptor? = nil,
+                              fileManager: FileManager = .default) -> UploadRequest {
+        return Session.default.upload(data,
+                                      to: convertible,
+                                      method: method,
+                                      headers: headers,
+                                      interceptor: interceptor,
+                                      fileManager: fileManager)
+    }
+
+    /// Creates an `UploadRequest` for the given `Data` using the `URLRequestConvertible` value and `RequestInterceptor`.
+    ///
+    /// - Parameters:
+    ///   - data:        The `Data` to upload.
+    ///   - convertible: `URLRequestConvertible` value to be used to create the `URLRequest`.
+    ///   - interceptor: `RequestInterceptor` value to be used by the returned `DataRequest`. `nil` by default.
+    ///   - fileManager: `FileManager` instance to be used by the returned `UploadRequest`. `.default` instance by
+    ///                  default.
+    ///
+    /// - Returns:       The created `UploadRequest`.
+    public static func upload(_ data: Data,
+                              with convertible: URLRequestConvertible,
+                              interceptor: RequestInterceptor? = nil,
+                              fileManager: FileManager = .default) -> UploadRequest {
+        return Session.default.upload(data, with: convertible, interceptor: interceptor, fileManager: fileManager)
+    }
+
+    // MARK: File
+
+    /// Creates an `UploadRequest` for the file at the given file `URL`, using a `URLRequest` from the provided
+    /// components and `RequestInterceptor`.
+    ///
+    /// - Parameters:
+    ///   - fileURL:     The `URL` of the file to upload.
+    ///   - convertible: `URLConvertible` value to be used as the `URLRequest`'s `URL`.
+    ///   - method:      `HTTPMethod` for the `URLRequest`. `.post` by default.
+    ///   - headers:     `HTTPHeaders` value to be added to the `URLRequest`. `nil` by default.
+    ///   - interceptor: `RequestInterceptor` value to be used by the returned `UploadRequest`. `nil` by default.
+    ///   - fileManager: `FileManager` instance to be used by the returned `UploadRequest`. `.default` instance by
+    ///                  default.
+    ///
+    /// - Returns:       The created `UploadRequest`.
+    public static func upload(_ fileURL: URL,
+                              to convertible: URLConvertible,
+                              method: HTTPMethod = .post,
+                              headers: HTTPHeaders? = nil,
+                              interceptor: RequestInterceptor? = nil,
+                              fileManager: FileManager = .default) -> UploadRequest {
+        return Session.default.upload(fileURL,
+                                      to: convertible,
+                                      method: method,
+                                      headers: headers,
+                                      interceptor: interceptor,
+                                      fileManager: fileManager)
+    }
+
+    /// Creates an `UploadRequest` for the file at the given file `URL` using the `URLRequestConvertible` value and
+    /// `RequestInterceptor`.
+    ///
+    /// - Parameters:
+    ///   - fileURL:     The `URL` of the file to upload.
+    ///   - convertible: `URLRequestConvertible` value to be used to create the `URLRequest`.
+    ///   - interceptor: `RequestInterceptor` value to be used by the returned `DataRequest`. `nil` by default.
+    ///   - fileManager: `FileManager` instance to be used by the returned `UploadRequest`. `.default` instance by
+    ///                  default.
+    ///
+    /// - Returns:       The created `UploadRequest`.
+    public static func upload(_ fileURL: URL,
+                              with convertible: URLRequestConvertible,
+                              interceptor: RequestInterceptor? = nil,
+                              fileManager: FileManager = .default) -> UploadRequest {
+        return Session.default.upload(fileURL, with: convertible, interceptor: interceptor, fileManager: fileManager)
+    }
+
+    // MARK: InputStream
+
+    /// Creates an `UploadRequest` from the `InputStream` provided using a `URLRequest` from the provided components and
+    /// `RequestInterceptor`.
+    ///
+    /// - Parameters:
+    ///   - stream:      The `InputStream` that provides the data to upload.
+    ///   - convertible: `URLConvertible` value to be used as the `URLRequest`'s `URL`.
+    ///   - method:      `HTTPMethod` for the `URLRequest`. `.post` by default.
+    ///   - headers:     `HTTPHeaders` value to be added to the `URLRequest`. `nil` by default.
+    ///   - interceptor: `RequestInterceptor` value to be used by the returned `DataRequest`. `nil` by default.
+    ///   - fileManager: `FileManager` instance to be used by the returned `UploadRequest`. `.default` instance by
+    ///                  default.
+    ///
+    /// - Returns:       The created `UploadRequest`.
+    public static func upload(_ stream: InputStream,
+                              to convertible: URLConvertible,
+                              method: HTTPMethod = .post,
+                              headers: HTTPHeaders? = nil,
+                              interceptor: RequestInterceptor? = nil,
+                              fileManager: FileManager = .default) -> UploadRequest {
+        return Session.default.upload(stream,
+                                      to: convertible,
+                                      method: method,
+                                      headers: headers,
+                                      interceptor: interceptor,
+                                      fileManager: fileManager)
+    }
+
+    /// Creates an `UploadRequest` from the provided `InputStream` using the `URLRequestConvertible` value and
+    /// `RequestInterceptor`.
+    ///
+    /// - Parameters:
+    ///   - stream:      The `InputStream` that provides the data to upload.
+    ///   - convertible: `URLRequestConvertible` value to be used to create the `URLRequest`.
+    ///   - interceptor: `RequestInterceptor` value to be used by the returned `DataRequest`. `nil` by default.
+    ///   - fileManager: `FileManager` instance to be used by the returned `UploadRequest`. `.default` instance by
+    ///                  default.
+    ///
+    /// - Returns:       The created `UploadRequest`.
+    public static func upload(_ stream: InputStream,
+                              with convertible: URLRequestConvertible,
+                              interceptor: RequestInterceptor? = nil,
+                              fileManager: FileManager = .default) -> UploadRequest {
+        return Session.default.upload(stream, with: convertible, interceptor: interceptor, fileManager: fileManager)
+    }
+
+    // MARK: MultipartFormData
+
+    /// Creates an `UploadRequest` for the multipart form data built using a closure and sent using the provided
+    /// `URLRequest` components and `RequestInterceptor`.
+    ///
+    /// It is important to understand the memory implications of uploading `MultipartFormData`. If the cumulative
+    /// payload is small, encoding the data in-memory and directly uploading to a server is the by far the most
+    /// efficient approach. However, if the payload is too large, encoding the data in-memory could cause your app to
+    /// be terminated. Larger payloads must first be written to disk using input and output streams to keep the memory
+    /// footprint low, then the data can be uploaded as a stream from the resulting file. Streaming from disk MUST be
+    /// used for larger payloads such as video content.
+    ///
+    /// The `encodingMemoryThreshold` parameter allows Alamofire to automatically determine whether to encode in-memory
+    /// or stream from disk. If the content length of the `MultipartFormData` is below the `encodingMemoryThreshold`,
+    /// encoding takes place in-memory. If the content length exceeds the threshold, the data is streamed to disk
+    /// during the encoding process. Then the result is uploaded as data or as a stream depending on which encoding
+    /// technique was used.
+    ///
+    /// - Parameters:
+    ///   - multipartFormData:       `MultipartFormData` building closure.
+    ///   - convertible:             `URLConvertible` value to be used as the `URLRequest`'s `URL`.
+    ///   - encodingMemoryThreshold: Byte threshold used to determine whether the form data is encoded into memory or
+    ///                              onto disk before being uploaded. `MultipartFormData.encodingMemoryThreshold` by
+    ///                              default.
+    ///   - method:                  `HTTPMethod` for the `URLRequest`. `.post` by default.
+    ///   - headers:                 `HTTPHeaders` value to be added to the `URLRequest`. `nil` by default.
+    ///   - interceptor:             `RequestInterceptor` value to be used by the returned `DataRequest`. `nil` by default.
+    ///   - fileManager:             `FileManager` to be used if the form data exceeds the memory threshold and is
+    ///                              written to disk before being uploaded. `.default` instance by default.
+    ///
+    /// - Returns:                   The created `UploadRequest`.
+    public static func upload(multipartFormData: @escaping (MultipartFormData) -> Void,
+                              to url: URLConvertible,
+                              usingThreshold encodingMemoryThreshold: UInt64 = MultipartFormData.encodingMemoryThreshold,
+                              method: HTTPMethod = .post,
+                              headers: HTTPHeaders? = nil,
+                              interceptor: RequestInterceptor? = nil,
+                              fileManager: FileManager = .default) -> UploadRequest {
+        return Session.default.upload(multipartFormData: multipartFormData,
+                                      to: url,
+                                      usingThreshold: encodingMemoryThreshold,
+                                      method: method,
+                                      headers: headers,
+                                      interceptor: interceptor,
+                                      fileManager: fileManager)
+    }
+
+    /// Creates an `UploadRequest` using a `MultipartFormData` building closure, the provided `URLRequestConvertible`
+    /// value, and a `RequestInterceptor`.
+    ///
+    /// It is important to understand the memory implications of uploading `MultipartFormData`. If the cumulative
+    /// payload is small, encoding the data in-memory and directly uploading to a server is the by far the most
+    /// efficient approach. However, if the payload is too large, encoding the data in-memory could cause your app to
+    /// be terminated. Larger payloads must first be written to disk using input and output streams to keep the memory
+    /// footprint low, then the data can be uploaded as a stream from the resulting file. Streaming from disk MUST be
+    /// used for larger payloads such as video content.
+    ///
+    /// The `encodingMemoryThreshold` parameter allows Alamofire to automatically determine whether to encode in-memory
+    /// or stream from disk. If the content length of the `MultipartFormData` is below the `encodingMemoryThreshold`,
+    /// encoding takes place in-memory. If the content length exceeds the threshold, the data is streamed to disk
+    /// during the encoding process. Then the result is uploaded as data or as a stream depending on which encoding
+    /// technique was used.
+    ///
+    /// - Parameters:
+    ///   - multipartFormData:       `MultipartFormData` building closure.
+    ///   - request:                 `URLRequestConvertible` value to be used to create the `URLRequest`.
+    ///   - encodingMemoryThreshold: Byte threshold used to determine whether the form data is encoded into memory or
+    ///                              onto disk before being uploaded. `MultipartFormData.encodingMemoryThreshold` by
+    ///                              default.
+    ///   - interceptor:             `RequestInterceptor` value to be used by the returned `DataRequest`. `nil` by default.
+    ///   - fileManager:             `FileManager` to be used if the form data exceeds the memory threshold and is
+    ///                              written to disk before being uploaded. `.default` instance by default.
+    ///
+    /// - Returns:                   The created `UploadRequest`.
+    public static func upload(multipartFormData: @escaping (MultipartFormData) -> Void,
+                              with request: URLRequestConvertible,
+                              usingThreshold encodingMemoryThreshold: UInt64 = MultipartFormData.encodingMemoryThreshold,
+                              interceptor: RequestInterceptor? = nil,
+                              fileManager: FileManager = .default) -> UploadRequest {
+        return Session.default.upload(multipartFormData: multipartFormData,
+                                      with: request,
+                                      usingThreshold: encodingMemoryThreshold,
+                                      interceptor: interceptor,
+                                      fileManager: fileManager)
+    }
+
+    /// Creates an `UploadRequest` for the prebuilt `MultipartFormData` value using the provided `URLRequest` components
+    /// and `RequestInterceptor`.
+    ///
+    /// It is important to understand the memory implications of uploading `MultipartFormData`. If the cumulative
+    /// payload is small, encoding the data in-memory and directly uploading to a server is the by far the most
+    /// efficient approach. However, if the payload is too large, encoding the data in-memory could cause your app to
+    /// be terminated. Larger payloads must first be written to disk using input and output streams to keep the memory
+    /// footprint low, then the data can be uploaded as a stream from the resulting file. Streaming from disk MUST be
+    /// used for larger payloads such as video content.
+    ///
+    /// The `encodingMemoryThreshold` parameter allows Alamofire to automatically determine whether to encode in-memory
+    /// or stream from disk. If the content length of the `MultipartFormData` is below the `encodingMemoryThreshold`,
+    /// encoding takes place in-memory. If the content length exceeds the threshold, the data is streamed to disk
+    /// during the encoding process. Then the result is uploaded as data or as a stream depending on which encoding
+    /// technique was used.
+    ///
+    /// - Parameters:
+    ///   - multipartFormData:       `MultipartFormData` instance to upload.
+    ///   - url:                     `URLConvertible` value to be used as the `URLRequest`'s `URL`.
+    ///   - encodingMemoryThreshold: Byte threshold used to determine whether the form data is encoded into memory or
+    ///                              onto disk before being uploaded. `MultipartFormData.encodingMemoryThreshold` by
+    ///                              default.
+    ///   - method:                  `HTTPMethod` for the `URLRequest`. `.post` by default.
+    ///   - headers:                 `HTTPHeaders` value to be added to the `URLRequest`. `nil` by default.
+    ///   - interceptor:             `RequestInterceptor` value to be used by the returned `DataRequest`. `nil` by default.
+    ///   - fileManager:             `FileManager` to be used if the form data exceeds the memory threshold and is
+    ///                              written to disk before being uploaded. `.default` instance by default.
+    ///
+    /// - Returns:                   The created `UploadRequest`.
+    public static func upload(multipartFormData: MultipartFormData,
+                              to url: URLConvertible,
+                              usingThreshold encodingMemoryThreshold: UInt64 = MultipartFormData.encodingMemoryThreshold,
+                              method: HTTPMethod = .post,
+                              headers: HTTPHeaders? = nil,
+                              interceptor: RequestInterceptor? = nil,
+                              fileManager: FileManager = .default) -> UploadRequest {
+        return Session.default.upload(multipartFormData: multipartFormData,
+                                      to: url,
+                                      usingThreshold: encodingMemoryThreshold,
+                                      method: method,
+                                      headers: headers,
+                                      interceptor: interceptor,
+                                      fileManager: fileManager)
+    }
+
+    /// Creates an `UploadRequest` for the prebuilt `MultipartFormData` value using the providing `URLRequestConvertible`
+    /// value and `RequestInterceptor`.
+    ///
+    /// It is important to understand the memory implications of uploading `MultipartFormData`. If the cumulative
+    /// payload is small, encoding the data in-memory and directly uploading to a server is the by far the most
+    /// efficient approach. However, if the payload is too large, encoding the data in-memory could cause your app to
+    /// be terminated. Larger payloads must first be written to disk using input and output streams to keep the memory
+    /// footprint low, then the data can be uploaded as a stream from the resulting file. Streaming from disk MUST be
+    /// used for larger payloads such as video content.
+    ///
+    /// The `encodingMemoryThreshold` parameter allows Alamofire to automatically determine whether to encode in-memory
+    /// or stream from disk. If the content length of the `MultipartFormData` is below the `encodingMemoryThreshold`,
+    /// encoding takes place in-memory. If the content length exceeds the threshold, the data is streamed to disk
+    /// during the encoding process. Then the result is uploaded as data or as a stream depending on which encoding
+    /// technique was used.
+    ///
+    /// - Parameters:
+    ///   - multipartFormData:       `MultipartFormData` instance to upload.
+    ///   - request:                 `URLRequestConvertible` value to be used to create the `URLRequest`.
+    ///   - encodingMemoryThreshold: Byte threshold used to determine whether the form data is encoded into memory or
+    ///                              onto disk before being uploaded. `MultipartFormData.encodingMemoryThreshold` by
+    ///                              default.
+    ///   - interceptor:             `RequestInterceptor` value to be used by the returned `DataRequest`. `nil` by default.
+    ///   - fileManager:             `FileManager` instance to be used by the returned `UploadRequest`. `.default` instance by
+    ///                              default.
+    ///
+    /// - Returns:                   The created `UploadRequest`.
+    public static func upload(multipartFormData: MultipartFormData,
+                              with request: URLRequestConvertible,
+                              usingThreshold encodingMemoryThreshold: UInt64 = MultipartFormData.encodingMemoryThreshold,
+                              interceptor: RequestInterceptor? = nil,
+                              fileManager: FileManager = .default) -> UploadRequest {
+        return Session.default.upload(multipartFormData: multipartFormData,
+                                      with: request,
+                                      usingThreshold: encodingMemoryThreshold,
+                                      interceptor: interceptor,
+                                      fileManager: fileManager)
+    }
+}

trolley/Pods/Alamofire/Source/AlamofireExtended.swift

@@ -0,0 +1,58 @@
+//
+//  AlamofireExtended.swift
+//
+//  Copyright (c) 2019 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+/// Type that acts as a generic extension point for all `AlamofireExtended` types.
+public struct AlamofireExtension<ExtendedType> {
+    /// Stores the type or metatype of any extended type.
+    let type: ExtendedType
+
+    init(_ type: ExtendedType) {
+        self.type = type
+    }
+}
+
+/// Protocol describing the `af` extension points for Alamofire extended types.
+public protocol AlamofireExtended {
+    /// Type being extended.
+    associatedtype ExtendedType
+
+    /// Static Alamofire extension point.
+    static var af: AlamofireExtension<ExtendedType>.Type { get set }
+    /// Instance Alamofire extension point.
+    var af: AlamofireExtension<ExtendedType> { get set }
+}
+
+public extension AlamofireExtended {
+    /// Static Alamofire extension point.
+    static var af: AlamofireExtension<Self>.Type {
+        get { return AlamofireExtension<Self>.self }
+        set {}
+    }
+
+    /// Instance Alamofire extension point.
+    var af: AlamofireExtension<Self> {
+        get { return AlamofireExtension(self) }
+        set {}
+    }
+}

trolley/Pods/Alamofire/Source/CachedResponseHandler.swift

@@ -0,0 +1,91 @@
+//
+//  CachedResponseHandler.swift
+//
+//  Copyright (c) 2019 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// A type that handles whether the data task should store the HTTP response in the cache.
+public protocol CachedResponseHandler {
+    /// Determines whether the HTTP response should be stored in the cache.
+    ///
+    /// The `completion` closure should be passed one of three possible options:
+    ///
+    ///   1. The cached response provided by the server (this is the most common use case).
+    ///   2. A modified version of the cached response (you may want to modify it in some way before caching).
+    ///   3. A `nil` value to prevent the cached response from being stored in the cache.
+    ///
+    /// - Parameters:
+    ///   - task:       The data task whose request resulted in the cached response.
+    ///   - response:   The cached response to potentially store in the cache.
+    ///   - completion: The closure to execute containing cached response, a modified response, or `nil`.
+    func dataTask(_ task: URLSessionDataTask,
+                  willCacheResponse response: CachedURLResponse,
+                  completion: @escaping (CachedURLResponse?) -> Void)
+}
+
+// MARK: -
+
+/// `ResponseCacher` is a convenience `CachedResponseHandler` making it easy to cache, not cache, or modify a cached
+/// response.
+public struct ResponseCacher {
+    /// Defines the behavior of the `ResponseCacher` type.
+    public enum Behavior {
+        /// Stores the cached response in the cache.
+        case cache
+        /// Prevents the cached response from being stored in the cache.
+        case doNotCache
+        /// Modifies the cached response before storing it in the cache.
+        case modify((URLSessionDataTask, CachedURLResponse) -> CachedURLResponse?)
+    }
+
+    /// Returns a `ResponseCacher` with a follow `Behavior`.
+    public static let cache = ResponseCacher(behavior: .cache)
+    /// Returns a `ResponseCacher` with a do not follow `Behavior`.
+    public static let doNotCache = ResponseCacher(behavior: .doNotCache)
+
+    /// The `Behavior` of the `ResponseCacher`.
+    public let behavior: Behavior
+
+    /// Creates a `ResponseCacher` instance from the `Behavior`.
+    ///
+    /// - Parameter behavior: The `Behavior`.
+    public init(behavior: Behavior) {
+        self.behavior = behavior
+    }
+}
+
+extension ResponseCacher: CachedResponseHandler {
+    public func dataTask(_ task: URLSessionDataTask,
+                         willCacheResponse response: CachedURLResponse,
+                         completion: @escaping (CachedURLResponse?) -> Void) {
+        switch behavior {
+        case .cache:
+            completion(response)
+        case .doNotCache:
+            completion(nil)
+        case let .modify(closure):
+            let response = closure(task, response)
+            completion(response)
+        }
+    }
+}

trolley/Pods/Alamofire/Source/DispatchQueue+Alamofire.swift

@@ -0,0 +1,37 @@
+//
+//  DispatchQueue+Alamofire.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Dispatch
+import Foundation
+
+extension DispatchQueue {
+    /// Execute the provided closure after a `TimeInterval`.
+    ///
+    /// - Parameters:
+    ///   - delay:   `TimeInterval` to delay execution.
+    ///   - closure: Closure to execute.
+    func after(_ delay: TimeInterval, execute closure: @escaping () -> Void) {
+        asyncAfter(deadline: .now() + delay, execute: closure)
+    }
+}

trolley/Pods/Alamofire/Source/EventMonitor.swift

@@ -0,0 +1,844 @@
+//
+//  EventMonitor.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// Protocol outlining the lifetime events inside Alamofire. It includes both events received from the various
+/// `URLSession` delegate protocols as well as various events from the lifetime of `Request` and its subclasses.
+public protocol EventMonitor {
+    /// The `DispatchQueue` onto which Alamofire's root `CompositeEventMonitor` will dispatch events. `.main` by default.
+    var queue: DispatchQueue { get }
+
+    // MARK: - URLSession Events
+
+    // MARK: URLSessionDelegate Events
+
+    /// Event called during `URLSessionDelegate`'s `urlSession(_:didBecomeInvalidWithError:)` method.
+    func urlSession(_ session: URLSession, didBecomeInvalidWithError error: Error?)
+
+    // MARK: URLSessionTaskDelegate Events
+
+    /// Event called during `URLSessionTaskDelegate`'s `urlSession(_:task:didReceive:completionHandler:)` method.
+    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge)
+
+    /// Event called during `URLSessionTaskDelegate`'s `urlSession(_:task:didSendBodyData:totalBytesSent:totalBytesExpectedToSend:)` method.
+    func urlSession(_ session: URLSession,
+                    task: URLSessionTask,
+                    didSendBodyData bytesSent: Int64,
+                    totalBytesSent: Int64,
+                    totalBytesExpectedToSend: Int64)
+
+    /// Event called during `URLSessionTaskDelegate`'s `urlSession(_:task:needNewBodyStream:)` method.
+    func urlSession(_ session: URLSession, taskNeedsNewBodyStream task: URLSessionTask)
+
+    /// Event called during `URLSessionTaskDelegate`'s `urlSession(_:task:willPerformHTTPRedirection:newRequest:completionHandler:)` method.
+    func urlSession(_ session: URLSession,
+                    task: URLSessionTask,
+                    willPerformHTTPRedirection response: HTTPURLResponse,
+                    newRequest request: URLRequest)
+
+    /// Event called during `URLSessionTaskDelegate`'s `urlSession(_:task:didFinishCollecting:)` method.
+    func urlSession(_ session: URLSession, task: URLSessionTask, didFinishCollecting metrics: URLSessionTaskMetrics)
+
+    /// Event called during `URLSessionTaskDelegate`'s `urlSession(_:task:didCompleteWithError:)` method.
+    func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?)
+
+    /// Event called during `URLSessionTaskDelegate`'s `urlSession(_:taskIsWaitingForConnectivity:)` method.
+    @available(macOS 10.13, iOS 11.0, tvOS 11.0, watchOS 4.0, *)
+    func urlSession(_ session: URLSession, taskIsWaitingForConnectivity task: URLSessionTask)
+
+    // MARK: URLSessionDataDelegate Events
+
+    /// Event called during `URLSessionDataDelegate`'s `urlSession(_:dataTask:didReceive:)` method.
+    func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, didReceive data: Data)
+
+    /// Event called during `URLSessionDataDelegate`'s `urlSession(_:dataTask:willCacheResponse:completionHandler:)` method.
+    func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, willCacheResponse proposedResponse: CachedURLResponse)
+
+    // MARK: URLSessionDownloadDelegate Events
+
+    /// Event called during `URLSessionDownloadDelegate`'s `urlSession(_:downloadTask:didResumeAtOffset:expectedTotalBytes:)` method.
+    func urlSession(_ session: URLSession,
+                    downloadTask: URLSessionDownloadTask,
+                    didResumeAtOffset fileOffset: Int64,
+                    expectedTotalBytes: Int64)
+
+    /// Event called during `URLSessionDownloadDelegate`'s `urlSession(_:downloadTask:didWriteData:totalBytesWritten:totalBytesExpectedToWrite:)` method.
+    func urlSession(_ session: URLSession,
+                    downloadTask: URLSessionDownloadTask,
+                    didWriteData bytesWritten: Int64,
+                    totalBytesWritten: Int64,
+                    totalBytesExpectedToWrite: Int64)
+
+    /// Event called during `URLSessionDownloadDelegate`'s `urlSession(_:downloadTask:didFinishDownloadingTo:)` method.
+    func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL)
+
+    // MARK: - Request Events
+
+    /// Event called when a `URLRequest` is first created for a `Request`. If a `RequestAdapter` is active, the
+    /// `URLRequest` will be adapted before being issued.
+    func request(_ request: Request, didCreateInitialURLRequest urlRequest: URLRequest)
+
+    /// Event called when the attempt to create a `URLRequest` from a `Request`'s original `URLRequestConvertible` value fails.
+    func request(_ request: Request, didFailToCreateURLRequestWithError error: AFError)
+
+    /// Event called when a `RequestAdapter` adapts the `Request`'s initial `URLRequest`.
+    func request(_ request: Request, didAdaptInitialRequest initialRequest: URLRequest, to adaptedRequest: URLRequest)
+
+    /// Event called when a `RequestAdapter` fails to adapt the `Request`'s initial `URLRequest`.
+    func request(_ request: Request, didFailToAdaptURLRequest initialRequest: URLRequest, withError error: AFError)
+
+    /// Event called when a final `URLRequest` is created for a `Request`.
+    func request(_ request: Request, didCreateURLRequest urlRequest: URLRequest)
+
+    /// Event called when a `URLSessionTask` subclass instance is created for a `Request`.
+    func request(_ request: Request, didCreateTask task: URLSessionTask)
+
+    /// Event called when a `Request` receives a `URLSessionTaskMetrics` value.
+    func request(_ request: Request, didGatherMetrics metrics: URLSessionTaskMetrics)
+
+    /// Event called when a `Request` fails due to an error created by Alamofire. e.g. When certificate pinning fails.
+    func request(_ request: Request, didFailTask task: URLSessionTask, earlyWithError error: AFError)
+
+    /// Event called when a `Request`'s task completes, possibly with an error. A `Request` may receive this event
+    /// multiple times if it is retried.
+    func request(_ request: Request, didCompleteTask task: URLSessionTask, with error: AFError?)
+
+    /// Event called when a `Request` is about to be retried.
+    func requestIsRetrying(_ request: Request)
+
+    /// Event called when a `Request` finishes and response serializers are being called.
+    func requestDidFinish(_ request: Request)
+
+    /// Event called when a `Request` receives a `resume` call.
+    func requestDidResume(_ request: Request)
+
+    /// Event called when a `Request`'s associated `URLSessionTask` is resumed.
+    func request(_ request: Request, didResumeTask task: URLSessionTask)
+
+    /// Event called when a `Request` receives a `suspend` call.
+    func requestDidSuspend(_ request: Request)
+
+    /// Event called when a `Request`'s associated `URLSessionTask` is suspended.
+    func request(_ request: Request, didSuspendTask task: URLSessionTask)
+
+    /// Event called when a `Request` receives a `cancel` call.
+    func requestDidCancel(_ request: Request)
+
+    /// Event called when a `Request`'s associated `URLSessionTask` is cancelled.
+    func request(_ request: Request, didCancelTask task: URLSessionTask)
+
+    // MARK: DataRequest Events
+
+    /// Event called when a `DataRequest` calls a `Validation`.
+    func request(_ request: DataRequest,
+                 didValidateRequest urlRequest: URLRequest?,
+                 response: HTTPURLResponse,
+                 data: Data?,
+                 withResult result: Request.ValidationResult)
+
+    /// Event called when a `DataRequest` creates a `DataResponse<Data?>` value without calling a `ResponseSerializer`.
+    func request(_ request: DataRequest, didParseResponse response: DataResponse<Data?, AFError>)
+
+    /// Event called when a `DataRequest` calls a `ResponseSerializer` and creates a generic `DataResponse<Value, AFError>`.
+    func request<Value>(_ request: DataRequest, didParseResponse response: DataResponse<Value, AFError>)
+
+    // MARK: UploadRequest Events
+
+    /// Event called when an `UploadRequest` creates its `Uploadable` value, indicating the type of upload it represents.
+    func request(_ request: UploadRequest, didCreateUploadable uploadable: UploadRequest.Uploadable)
+
+    /// Event called when an `UploadRequest` failed to create its `Uploadable` value due to an error.
+    func request(_ request: UploadRequest, didFailToCreateUploadableWithError error: AFError)
+
+    /// Event called when an `UploadRequest` provides the `InputStream` from its `Uploadable` value. This only occurs if
+    /// the `InputStream` does not wrap a `Data` value or file `URL`.
+    func request(_ request: UploadRequest, didProvideInputStream stream: InputStream)
+
+    // MARK: DownloadRequest Events
+
+    /// Event called when a `DownloadRequest`'s `URLSessionDownloadTask` finishes and the temporary file has been moved.
+    func request(_ request: DownloadRequest, didFinishDownloadingUsing task: URLSessionTask, with result: Result<URL, AFError>)
+
+    /// Event called when a `DownloadRequest`'s `Destination` closure is called and creates the destination URL the
+    /// downloaded file will be moved to.
+    func request(_ request: DownloadRequest, didCreateDestinationURL url: URL)
+
+    /// Event called when a `DownloadRequest` calls a `Validation`.
+    func request(_ request: DownloadRequest,
+                 didValidateRequest urlRequest: URLRequest?,
+                 response: HTTPURLResponse,
+                 fileURL: URL?,
+                 withResult result: Request.ValidationResult)
+
+    /// Event called when a `DownloadRequest` creates a `DownloadResponse<URL?, AFError>` without calling a `ResponseSerializer`.
+    func request(_ request: DownloadRequest, didParseResponse response: DownloadResponse<URL?, AFError>)
+
+    /// Event called when a `DownloadRequest` calls a `DownloadResponseSerializer` and creates a generic `DownloadResponse<Value, AFError>`
+    func request<Value>(_ request: DownloadRequest, didParseResponse response: DownloadResponse<Value, AFError>)
+}
+
+extension EventMonitor {
+    /// The default queue on which `CompositeEventMonitor`s will call the `EventMonitor` methods. `.main` by default.
+    public var queue: DispatchQueue { return .main }
+
+    // MARK: Default Implementations
+
+    public func urlSession(_ session: URLSession, didBecomeInvalidWithError error: Error?) {}
+    public func urlSession(_ session: URLSession,
+                           task: URLSessionTask,
+                           didReceive challenge: URLAuthenticationChallenge) {}
+    public func urlSession(_ session: URLSession,
+                           task: URLSessionTask,
+                           didSendBodyData bytesSent: Int64,
+                           totalBytesSent: Int64,
+                           totalBytesExpectedToSend: Int64) {}
+    public func urlSession(_ session: URLSession, taskNeedsNewBodyStream task: URLSessionTask) {}
+    public func urlSession(_ session: URLSession,
+                           task: URLSessionTask,
+                           willPerformHTTPRedirection response: HTTPURLResponse,
+                           newRequest request: URLRequest) {}
+    public func urlSession(_ session: URLSession,
+                           task: URLSessionTask,
+                           didFinishCollecting metrics: URLSessionTaskMetrics) {}
+    public func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {}
+    public func urlSession(_ session: URLSession, taskIsWaitingForConnectivity task: URLSessionTask) {}
+    public func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, didReceive data: Data) {}
+    public func urlSession(_ session: URLSession,
+                           dataTask: URLSessionDataTask,
+                           willCacheResponse proposedResponse: CachedURLResponse) {}
+    public func urlSession(_ session: URLSession,
+                           downloadTask: URLSessionDownloadTask,
+                           didResumeAtOffset fileOffset: Int64,
+                           expectedTotalBytes: Int64) {}
+    public func urlSession(_ session: URLSession,
+                           downloadTask: URLSessionDownloadTask,
+                           didWriteData bytesWritten: Int64,
+                           totalBytesWritten: Int64,
+                           totalBytesExpectedToWrite: Int64) {}
+    public func urlSession(_ session: URLSession,
+                           downloadTask: URLSessionDownloadTask,
+                           didFinishDownloadingTo location: URL) {}
+    public func request(_ request: Request, didCreateInitialURLRequest urlRequest: URLRequest) {}
+    public func request(_ request: Request, didFailToCreateURLRequestWithError error: AFError) {}
+    public func request(_ request: Request,
+                        didAdaptInitialRequest initialRequest: URLRequest,
+                        to adaptedRequest: URLRequest) {}
+    public func request(_ request: Request,
+                        didFailToAdaptURLRequest initialRequest: URLRequest,
+                        withError error: AFError) {}
+    public func request(_ request: Request, didCreateURLRequest urlRequest: URLRequest) {}
+    public func request(_ request: Request, didCreateTask task: URLSessionTask) {}
+    public func request(_ request: Request, didGatherMetrics metrics: URLSessionTaskMetrics) {}
+    public func request(_ request: Request, didFailTask task: URLSessionTask, earlyWithError error: AFError) {}
+    public func request(_ request: Request, didCompleteTask task: URLSessionTask, with error: AFError?) {}
+    public func requestIsRetrying(_ request: Request) {}
+    public func requestDidFinish(_ request: Request) {}
+    public func requestDidResume(_ request: Request) {}
+    public func request(_ request: Request, didResumeTask task: URLSessionTask) {}
+    public func requestDidSuspend(_ request: Request) {}
+    public func request(_ request: Request, didSuspendTask task: URLSessionTask) {}
+    public func requestDidCancel(_ request: Request) {}
+    public func request(_ request: Request, didCancelTask task: URLSessionTask) {}
+    public func request(_ request: DataRequest,
+                        didValidateRequest urlRequest: URLRequest?,
+                        response: HTTPURLResponse,
+                        data: Data?,
+                        withResult result: Request.ValidationResult) {}
+    public func request(_ request: DataRequest, didParseResponse response: DataResponse<Data?, AFError>) {}
+    public func request<Value>(_ request: DataRequest, didParseResponse response: DataResponse<Value, AFError>) {}
+    public func request(_ request: UploadRequest, didCreateUploadable uploadable: UploadRequest.Uploadable) {}
+    public func request(_ request: UploadRequest, didFailToCreateUploadableWithError error: AFError) {}
+    public func request(_ request: UploadRequest, didProvideInputStream stream: InputStream) {}
+    public func request(_ request: DownloadRequest, didFinishDownloadingUsing task: URLSessionTask, with result: Result<URL, AFError>) {}
+    public func request(_ request: DownloadRequest, didCreateDestinationURL url: URL) {}
+    public func request(_ request: DownloadRequest,
+                        didValidateRequest urlRequest: URLRequest?,
+                        response: HTTPURLResponse,
+                        fileURL: URL?,
+                        withResult result: Request.ValidationResult) {}
+    public func request(_ request: DownloadRequest, didParseResponse response: DownloadResponse<URL?, AFError>) {}
+    public func request<Value>(_ request: DownloadRequest, didParseResponse response: DownloadResponse<Value, AFError>) {}
+}
+
+/// An `EventMonitor` which can contain multiple `EventMonitor`s and calls their methods on their queues.
+public final class CompositeEventMonitor: EventMonitor {
+    public let queue = DispatchQueue(label: "org.alamofire.compositeEventMonitor", qos: .background)
+
+    let monitors: [EventMonitor]
+
+    init(monitors: [EventMonitor]) {
+        self.monitors = monitors
+    }
+
+    func performEvent(_ event: @escaping (EventMonitor) -> Void) {
+        queue.async {
+            for monitor in self.monitors {
+                monitor.queue.async { event(monitor) }
+            }
+        }
+    }
+
+    public func urlSession(_ session: URLSession, didBecomeInvalidWithError error: Error?) {
+        performEvent { $0.urlSession(session, didBecomeInvalidWithError: error) }
+    }
+
+    public func urlSession(_ session: URLSession,
+                           task: URLSessionTask,
+                           didReceive challenge: URLAuthenticationChallenge) {
+        performEvent { $0.urlSession(session, task: task, didReceive: challenge) }
+    }
+
+    public func urlSession(_ session: URLSession,
+                           task: URLSessionTask,
+                           didSendBodyData bytesSent: Int64,
+                           totalBytesSent: Int64,
+                           totalBytesExpectedToSend: Int64) {
+        performEvent {
+            $0.urlSession(session,
+                          task: task,
+                          didSendBodyData: bytesSent,
+                          totalBytesSent: totalBytesSent,
+                          totalBytesExpectedToSend: totalBytesExpectedToSend)
+        }
+    }
+
+    public func urlSession(_ session: URLSession, taskNeedsNewBodyStream task: URLSessionTask) {
+        performEvent {
+            $0.urlSession(session, taskNeedsNewBodyStream: task)
+        }
+    }
+
+    public func urlSession(_ session: URLSession,
+                           task: URLSessionTask,
+                           willPerformHTTPRedirection response: HTTPURLResponse,
+                           newRequest request: URLRequest) {
+        performEvent {
+            $0.urlSession(session,
+                          task: task,
+                          willPerformHTTPRedirection: response,
+                          newRequest: request)
+        }
+    }
+
+    public func urlSession(_ session: URLSession, task: URLSessionTask, didFinishCollecting metrics: URLSessionTaskMetrics) {
+        performEvent { $0.urlSession(session, task: task, didFinishCollecting: metrics) }
+    }
+
+    public func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
+        performEvent { $0.urlSession(session, task: task, didCompleteWithError: error) }
+    }
+
+    @available(macOS 10.13, iOS 11.0, tvOS 11.0, watchOS 4.0, *)
+    public func urlSession(_ session: URLSession, taskIsWaitingForConnectivity task: URLSessionTask) {
+        performEvent { $0.urlSession(session, taskIsWaitingForConnectivity: task) }
+    }
+
+    public func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, didReceive data: Data) {
+        performEvent { $0.urlSession(session, dataTask: dataTask, didReceive: data) }
+    }
+
+    public func urlSession(_ session: URLSession,
+                           dataTask: URLSessionDataTask,
+                           willCacheResponse proposedResponse: CachedURLResponse) {
+        performEvent { $0.urlSession(session, dataTask: dataTask, willCacheResponse: proposedResponse) }
+    }
+
+    public func urlSession(_ session: URLSession,
+                           downloadTask: URLSessionDownloadTask,
+                           didResumeAtOffset fileOffset: Int64,
+                           expectedTotalBytes: Int64) {
+        performEvent {
+            $0.urlSession(session,
+                          downloadTask: downloadTask,
+                          didResumeAtOffset: fileOffset,
+                          expectedTotalBytes: expectedTotalBytes)
+        }
+    }
+
+    public func urlSession(_ session: URLSession,
+                           downloadTask: URLSessionDownloadTask,
+                           didWriteData bytesWritten: Int64,
+                           totalBytesWritten: Int64,
+                           totalBytesExpectedToWrite: Int64) {
+        performEvent {
+            $0.urlSession(session,
+                          downloadTask: downloadTask,
+                          didWriteData: bytesWritten,
+                          totalBytesWritten: totalBytesWritten,
+                          totalBytesExpectedToWrite: totalBytesExpectedToWrite)
+        }
+    }
+
+    public func urlSession(_ session: URLSession,
+                           downloadTask: URLSessionDownloadTask,
+                           didFinishDownloadingTo location: URL) {
+        performEvent { $0.urlSession(session, downloadTask: downloadTask, didFinishDownloadingTo: location) }
+    }
+
+    public func request(_ request: Request, didCreateInitialURLRequest urlRequest: URLRequest) {
+        performEvent { $0.request(request, didCreateInitialURLRequest: urlRequest) }
+    }
+
+    public func request(_ request: Request, didFailToCreateURLRequestWithError error: AFError) {
+        performEvent { $0.request(request, didFailToCreateURLRequestWithError: error) }
+    }
+
+    public func request(_ request: Request, didAdaptInitialRequest initialRequest: URLRequest, to adaptedRequest: URLRequest) {
+        performEvent { $0.request(request, didAdaptInitialRequest: initialRequest, to: adaptedRequest) }
+    }
+
+    public func request(_ request: Request, didFailToAdaptURLRequest initialRequest: URLRequest, withError error: AFError) {
+        performEvent { $0.request(request, didFailToAdaptURLRequest: initialRequest, withError: error) }
+    }
+
+    public func request(_ request: Request, didCreateURLRequest urlRequest: URLRequest) {
+        performEvent { $0.request(request, didCreateURLRequest: urlRequest) }
+    }
+
+    public func request(_ request: Request, didCreateTask task: URLSessionTask) {
+        performEvent { $0.request(request, didCreateTask: task) }
+    }
+
+    public func request(_ request: Request, didGatherMetrics metrics: URLSessionTaskMetrics) {
+        performEvent { $0.request(request, didGatherMetrics: metrics) }
+    }
+
+    public func request(_ request: Request, didFailTask task: URLSessionTask, earlyWithError error: AFError) {
+        performEvent { $0.request(request, didFailTask: task, earlyWithError: error) }
+    }
+
+    public func request(_ request: Request, didCompleteTask task: URLSessionTask, with error: AFError?) {
+        performEvent { $0.request(request, didCompleteTask: task, with: error) }
+    }
+
+    public func requestIsRetrying(_ request: Request) {
+        performEvent { $0.requestIsRetrying(request) }
+    }
+
+    public func requestDidFinish(_ request: Request) {
+        performEvent { $0.requestDidFinish(request) }
+    }
+
+    public func requestDidResume(_ request: Request) {
+        performEvent { $0.requestDidResume(request) }
+    }
+
+    public func request(_ request: Request, didResumeTask task: URLSessionTask) {
+        performEvent { $0.request(request, didResumeTask: task) }
+    }
+
+    public func requestDidSuspend(_ request: Request) {
+        performEvent { $0.requestDidSuspend(request) }
+    }
+
+    public func request(_ request: Request, didSuspendTask task: URLSessionTask) {
+        performEvent { $0.request(request, didSuspendTask: task) }
+    }
+
+    public func requestDidCancel(_ request: Request) {
+        performEvent { $0.requestDidCancel(request) }
+    }
+
+    public func request(_ request: Request, didCancelTask task: URLSessionTask) {
+        performEvent { $0.request(request, didCancelTask: task) }
+    }
+
+    public func request(_ request: DataRequest,
+                        didValidateRequest urlRequest: URLRequest?,
+                        response: HTTPURLResponse,
+                        data: Data?,
+                        withResult result: Request.ValidationResult) {
+        performEvent { $0.request(request,
+                                  didValidateRequest: urlRequest,
+                                  response: response,
+                                  data: data,
+                                  withResult: result)
+        }
+    }
+
+    public func request(_ request: DataRequest, didParseResponse response: DataResponse<Data?, AFError>) {
+        performEvent { $0.request(request, didParseResponse: response) }
+    }
+
+    public func request<Value>(_ request: DataRequest, didParseResponse response: DataResponse<Value, AFError>) {
+        performEvent { $0.request(request, didParseResponse: response) }
+    }
+
+    public func request(_ request: UploadRequest, didCreateUploadable uploadable: UploadRequest.Uploadable) {
+        performEvent { $0.request(request, didCreateUploadable: uploadable) }
+    }
+
+    public func request(_ request: UploadRequest, didFailToCreateUploadableWithError error: AFError) {
+        performEvent { $0.request(request, didFailToCreateUploadableWithError: error) }
+    }
+
+    public func request(_ request: UploadRequest, didProvideInputStream stream: InputStream) {
+        performEvent { $0.request(request, didProvideInputStream: stream) }
+    }
+
+    public func request(_ request: DownloadRequest, didFinishDownloadingUsing task: URLSessionTask, with result: Result<URL, AFError>) {
+        performEvent { $0.request(request, didFinishDownloadingUsing: task, with: result) }
+    }
+
+    public func request(_ request: DownloadRequest, didCreateDestinationURL url: URL) {
+        performEvent { $0.request(request, didCreateDestinationURL: url) }
+    }
+
+    public func request(_ request: DownloadRequest,
+                        didValidateRequest urlRequest: URLRequest?,
+                        response: HTTPURLResponse,
+                        fileURL: URL?,
+                        withResult result: Request.ValidationResult) {
+        performEvent { $0.request(request,
+                                  didValidateRequest: urlRequest,
+                                  response: response,
+                                  fileURL: fileURL,
+                                  withResult: result) }
+    }
+
+    public func request(_ request: DownloadRequest, didParseResponse response: DownloadResponse<URL?, AFError>) {
+        performEvent { $0.request(request, didParseResponse: response) }
+    }
+
+    public func request<Value>(_ request: DownloadRequest, didParseResponse response: DownloadResponse<Value, AFError>) {
+        performEvent { $0.request(request, didParseResponse: response) }
+    }
+}
+
+/// `EventMonitor` that allows optional closures to be set to receive events.
+open class ClosureEventMonitor: EventMonitor {
+    /// Closure called on the `urlSession(_:didBecomeInvalidWithError:)` event.
+    open var sessionDidBecomeInvalidWithError: ((URLSession, Error?) -> Void)?
+
+    /// Closure called on the `urlSession(_:task:didReceive:completionHandler:)`.
+    open var taskDidReceiveChallenge: ((URLSession, URLSessionTask, URLAuthenticationChallenge) -> Void)?
+
+    /// Closure that receives `urlSession(_:task:didSendBodyData:totalBytesSent:totalBytesExpectedToSend:)` event.
+    open var taskDidSendBodyData: ((URLSession, URLSessionTask, Int64, Int64, Int64) -> Void)?
+
+    /// Closure called on the `urlSession(_:task:needNewBodyStream:)` event.
+    open var taskNeedNewBodyStream: ((URLSession, URLSessionTask) -> Void)?
+
+    /// Closure called on the `urlSession(_:task:willPerformHTTPRedirection:newRequest:completionHandler:)` event.
+    open var taskWillPerformHTTPRedirection: ((URLSession, URLSessionTask, HTTPURLResponse, URLRequest) -> Void)?
+
+    /// Closure called on the `urlSession(_:task:didFinishCollecting:)` event.
+    open var taskDidFinishCollectingMetrics: ((URLSession, URLSessionTask, URLSessionTaskMetrics) -> Void)?
+
+    /// Closure called on the `urlSession(_:task:didCompleteWithError:)` event.
+    open var taskDidComplete: ((URLSession, URLSessionTask, Error?) -> Void)?
+
+    /// Closure called on the `urlSession(_:taskIsWaitingForConnectivity:)` event.
+    open var taskIsWaitingForConnectivity: ((URLSession, URLSessionTask) -> Void)?
+
+    /// Closure that receives the `urlSession(_:dataTask:didReceive:)` event.
+    open var dataTaskDidReceiveData: ((URLSession, URLSessionDataTask, Data) -> Void)?
+
+    /// Closure called on the `urlSession(_:dataTask:willCacheResponse:completionHandler:)` event.
+    open var dataTaskWillCacheResponse: ((URLSession, URLSessionDataTask, CachedURLResponse) -> Void)?
+
+    /// Closure called on the `urlSession(_:downloadTask:didFinishDownloadingTo:)` event.
+    open var downloadTaskDidFinishDownloadingToURL: ((URLSession, URLSessionDownloadTask, URL) -> Void)?
+
+    /// Closure called on the `urlSession(_:downloadTask:didWriteData:totalBytesWritten:totalBytesExpectedToWrite:)`
+    /// event.
+    open var downloadTaskDidWriteData: ((URLSession, URLSessionDownloadTask, Int64, Int64, Int64) -> Void)?
+
+    /// Closure called on the `urlSession(_:downloadTask:didResumeAtOffset:expectedTotalBytes:)` event.
+    open var downloadTaskDidResumeAtOffset: ((URLSession, URLSessionDownloadTask, Int64, Int64) -> Void)?
+
+    // MARK: - Request Events
+
+    /// Closure called on the `request(_:didCreateInitialURLRequest:)` event.
+    open var requestDidCreateInitialURLRequest: ((Request, URLRequest) -> Void)?
+
+    /// Closure called on the `request(_:didFailToCreateURLRequestWithError:)` event.
+    open var requestDidFailToCreateURLRequestWithError: ((Request, AFError) -> Void)?
+
+    /// Closure called on the `request(_:didAdaptInitialRequest:to:)` event.
+    open var requestDidAdaptInitialRequestToAdaptedRequest: ((Request, URLRequest, URLRequest) -> Void)?
+
+    /// Closure called on the `request(_:didFailToAdaptURLRequest:withError:)` event.
+    open var requestDidFailToAdaptURLRequestWithError: ((Request, URLRequest, AFError) -> Void)?
+
+    /// Closure called on the `request(_:didCreateURLRequest:)` event.
+    open var requestDidCreateURLRequest: ((Request, URLRequest) -> Void)?
+
+    /// Closure called on the `request(_:didCreateTask:)` event.
+    open var requestDidCreateTask: ((Request, URLSessionTask) -> Void)?
+
+    /// Closure called on the `request(_:didGatherMetrics:)` event.
+    open var requestDidGatherMetrics: ((Request, URLSessionTaskMetrics) -> Void)?
+
+    /// Closure called on the `request(_:didFailTask:earlyWithError:)` event.
+    open var requestDidFailTaskEarlyWithError: ((Request, URLSessionTask, AFError) -> Void)?
+
+    /// Closure called on the `request(_:didCompleteTask:with:)` event.
+    open var requestDidCompleteTaskWithError: ((Request, URLSessionTask, AFError?) -> Void)?
+
+    /// Closure called on the `requestIsRetrying(_:)` event.
+    open var requestIsRetrying: ((Request) -> Void)?
+
+    /// Closure called on the `requestDidFinish(_:)` event.
+    open var requestDidFinish: ((Request) -> Void)?
+
+    /// Closure called on the `requestDidResume(_:)` event.
+    open var requestDidResume: ((Request) -> Void)?
+
+    /// Closure called on the `request(_:didResumeTask:)` event.
+    open var requestDidResumeTask: ((Request, URLSessionTask) -> Void)?
+
+    /// Closure called on the `requestDidSuspend(_:)` event.
+    open var requestDidSuspend: ((Request) -> Void)?
+
+    /// Closure called on the `request(_:didSuspendTask:)` event.
+    open var requestDidSuspendTask: ((Request, URLSessionTask) -> Void)?
+
+    /// Closure called on the `requestDidCancel(_:)` event.
+    open var requestDidCancel: ((Request) -> Void)?
+
+    /// Closure called on the `request(_:didCancelTask:)` event.
+    open var requestDidCancelTask: ((Request, URLSessionTask) -> Void)?
+
+    /// Closure called on the `request(_:didValidateRequest:response:data:withResult:)` event.
+    open var requestDidValidateRequestResponseDataWithResult: ((DataRequest, URLRequest?, HTTPURLResponse, Data?, Request.ValidationResult) -> Void)?
+
+    /// Closure called on the `request(_:didParseResponse:)` event.
+    open var requestDidParseResponse: ((DataRequest, DataResponse<Data?, AFError>) -> Void)?
+
+    /// Closure called on the `request(_:didCreateUploadable:)` event.
+    open var requestDidCreateUploadable: ((UploadRequest, UploadRequest.Uploadable) -> Void)?
+
+    /// Closure called on the `request(_:didFailToCreateUploadableWithError:)` event.
+    open var requestDidFailToCreateUploadableWithError: ((UploadRequest, AFError) -> Void)?
+
+    /// Closure called on the `request(_:didProvideInputStream:)` event.
+    open var requestDidProvideInputStream: ((UploadRequest, InputStream) -> Void)?
+
+    /// Closure called on the `request(_:didFinishDownloadingUsing:with:)` event.
+    open var requestDidFinishDownloadingUsingTaskWithResult: ((DownloadRequest, URLSessionTask, Result<URL, AFError>) -> Void)?
+
+    /// Closure called on the `request(_:didCreateDestinationURL:)` event.
+    open var requestDidCreateDestinationURL: ((DownloadRequest, URL) -> Void)?
+
+    /// Closure called on the `request(_:didValidateRequest:response:temporaryURL:destinationURL:withResult:)` event.
+    open var requestDidValidateRequestResponseFileURLWithResult: ((DownloadRequest, URLRequest?, HTTPURLResponse, URL?, Request.ValidationResult) -> Void)?
+
+    /// Closure called on the `request(_:didParseResponse:)` event.
+    open var requestDidParseDownloadResponse: ((DownloadRequest, DownloadResponse<URL?, AFError>) -> Void)?
+
+    public let queue: DispatchQueue
+
+    /// Creates an instance using the provided queue.
+    ///
+    /// - Parameter queue: `DispatchQueue` on which events will fired. `.main` by default.
+    public init(queue: DispatchQueue = .main) {
+        self.queue = queue
+    }
+
+    open func urlSession(_ session: URLSession, didBecomeInvalidWithError error: Error?) {
+        sessionDidBecomeInvalidWithError?(session, error)
+    }
+
+    open func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge) {
+        taskDidReceiveChallenge?(session, task, challenge)
+    }
+
+    open func urlSession(_ session: URLSession,
+                         task: URLSessionTask,
+                         didSendBodyData bytesSent: Int64,
+                         totalBytesSent: Int64,
+                         totalBytesExpectedToSend: Int64) {
+        taskDidSendBodyData?(session, task, bytesSent, totalBytesSent, totalBytesExpectedToSend)
+    }
+
+    open func urlSession(_ session: URLSession, taskNeedsNewBodyStream task: URLSessionTask) {
+        taskNeedNewBodyStream?(session, task)
+    }
+
+    open func urlSession(_ session: URLSession,
+                         task: URLSessionTask,
+                         willPerformHTTPRedirection response: HTTPURLResponse,
+                         newRequest request: URLRequest) {
+        taskWillPerformHTTPRedirection?(session, task, response, request)
+    }
+
+    open func urlSession(_ session: URLSession, task: URLSessionTask, didFinishCollecting metrics: URLSessionTaskMetrics) {
+        taskDidFinishCollectingMetrics?(session, task, metrics)
+    }
+
+    open func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
+        taskDidComplete?(session, task, error)
+    }
+
+    open func urlSession(_ session: URLSession, taskIsWaitingForConnectivity task: URLSessionTask) {
+        taskIsWaitingForConnectivity?(session, task)
+    }
+
+    open func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, didReceive data: Data) {
+        dataTaskDidReceiveData?(session, dataTask, data)
+    }
+
+    open func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, willCacheResponse proposedResponse: CachedURLResponse) {
+        dataTaskWillCacheResponse?(session, dataTask, proposedResponse)
+    }
+
+    open func urlSession(_ session: URLSession,
+                         downloadTask: URLSessionDownloadTask,
+                         didResumeAtOffset fileOffset: Int64,
+                         expectedTotalBytes: Int64) {
+        downloadTaskDidResumeAtOffset?(session, downloadTask, fileOffset, expectedTotalBytes)
+    }
+
+    open func urlSession(_ session: URLSession,
+                         downloadTask: URLSessionDownloadTask,
+                         didWriteData bytesWritten: Int64,
+                         totalBytesWritten: Int64,
+                         totalBytesExpectedToWrite: Int64) {
+        downloadTaskDidWriteData?(session, downloadTask, bytesWritten, totalBytesWritten, totalBytesExpectedToWrite)
+    }
+
+    open func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL) {
+        downloadTaskDidFinishDownloadingToURL?(session, downloadTask, location)
+    }
+
+    // MARK: Request Events
+
+    open func request(_ request: Request, didCreateInitialURLRequest urlRequest: URLRequest) {
+        requestDidCreateInitialURLRequest?(request, urlRequest)
+    }
+
+    open func request(_ request: Request, didFailToCreateURLRequestWithError error: AFError) {
+        requestDidFailToCreateURLRequestWithError?(request, error)
+    }
+
+    open func request(_ request: Request, didAdaptInitialRequest initialRequest: URLRequest, to adaptedRequest: URLRequest) {
+        requestDidAdaptInitialRequestToAdaptedRequest?(request, initialRequest, adaptedRequest)
+    }
+
+    open func request(_ request: Request, didFailToAdaptURLRequest initialRequest: URLRequest, withError error: AFError) {
+        requestDidFailToAdaptURLRequestWithError?(request, initialRequest, error)
+    }
+
+    open func request(_ request: Request, didCreateURLRequest urlRequest: URLRequest) {
+        requestDidCreateURLRequest?(request, urlRequest)
+    }
+
+    open func request(_ request: Request, didCreateTask task: URLSessionTask) {
+        requestDidCreateTask?(request, task)
+    }
+
+    open func request(_ request: Request, didGatherMetrics metrics: URLSessionTaskMetrics) {
+        requestDidGatherMetrics?(request, metrics)
+    }
+
+    open func request(_ request: Request, didFailTask task: URLSessionTask, earlyWithError error: AFError) {
+        requestDidFailTaskEarlyWithError?(request, task, error)
+    }
+
+    open func request(_ request: Request, didCompleteTask task: URLSessionTask, with error: AFError?) {
+        requestDidCompleteTaskWithError?(request, task, error)
+    }
+
+    open func requestIsRetrying(_ request: Request) {
+        requestIsRetrying?(request)
+    }
+
+    open func requestDidFinish(_ request: Request) {
+        requestDidFinish?(request)
+    }
+
+    open func requestDidResume(_ request: Request) {
+        requestDidResume?(request)
+    }
+
+    public func request(_ request: Request, didResumeTask task: URLSessionTask) {
+        requestDidResumeTask?(request, task)
+    }
+
+    open func requestDidSuspend(_ request: Request) {
+        requestDidSuspend?(request)
+    }
+
+    public func request(_ request: Request, didSuspendTask task: URLSessionTask) {
+        requestDidSuspendTask?(request, task)
+    }
+
+    open func requestDidCancel(_ request: Request) {
+        requestDidCancel?(request)
+    }
+
+    public func request(_ request: Request, didCancelTask task: URLSessionTask) {
+        requestDidCancelTask?(request, task)
+    }
+
+    open func request(_ request: DataRequest,
+                      didValidateRequest urlRequest: URLRequest?,
+                      response: HTTPURLResponse,
+                      data: Data?,
+                      withResult result: Request.ValidationResult) {
+        requestDidValidateRequestResponseDataWithResult?(request, urlRequest, response, data, result)
+    }
+
+    open func request(_ request: DataRequest, didParseResponse response: DataResponse<Data?, AFError>) {
+        requestDidParseResponse?(request, response)
+    }
+
+    open func request(_ request: UploadRequest, didCreateUploadable uploadable: UploadRequest.Uploadable) {
+        requestDidCreateUploadable?(request, uploadable)
+    }
+
+    open func request(_ request: UploadRequest, didFailToCreateUploadableWithError error: AFError) {
+        requestDidFailToCreateUploadableWithError?(request, error)
+    }
+
+    open func request(_ request: UploadRequest, didProvideInputStream stream: InputStream) {
+        requestDidProvideInputStream?(request, stream)
+    }
+
+    open func request(_ request: DownloadRequest, didFinishDownloadingUsing task: URLSessionTask, with result: Result<URL, AFError>) {
+        requestDidFinishDownloadingUsingTaskWithResult?(request, task, result)
+    }
+
+    open func request(_ request: DownloadRequest, didCreateDestinationURL url: URL) {
+        requestDidCreateDestinationURL?(request, url)
+    }
+
+    open func request(_ request: DownloadRequest,
+                      didValidateRequest urlRequest: URLRequest?,
+                      response: HTTPURLResponse,
+                      fileURL: URL?,
+                      withResult result: Request.ValidationResult) {
+        requestDidValidateRequestResponseFileURLWithResult?(request,
+                                                            urlRequest,
+                                                            response,
+                                                            fileURL,
+                                                            result)
+    }
+
+    open func request(_ request: DownloadRequest, didParseResponse response: DownloadResponse<URL?, AFError>) {
+        requestDidParseDownloadResponse?(request, response)
+    }
+}

trolley/Pods/Alamofire/Source/HTTPHeaders.swift

@@ -0,0 +1,445 @@
+//
+//  HTTPHeaders.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// An order-preserving and case-insensitive representation of HTTP headers.
+public struct HTTPHeaders {
+    private var headers: [HTTPHeader] = []
+
+    /// Creates an empty instance.
+    public init() {}
+
+    /// Creates an instance from an array of `HTTPHeader`s. Duplicate case-insensitive names are collapsed into the last
+    /// name and value encountered.
+    public init(_ headers: [HTTPHeader]) {
+        self.init()
+
+        headers.forEach { update($0) }
+    }
+
+    /// Creates an instance from a `[String: String]`. Duplicate case-insensitive names are collapsed into the last name
+    /// and value encountered.
+    public init(_ dictionary: [String: String]) {
+        self.init()
+
+        dictionary.forEach { update(HTTPHeader(name: $0.key, value: $0.value)) }
+    }
+
+    /// Case-insensitively updates or appends an `HTTPHeader` into the instance using the provided `name` and `value`.
+    ///
+    /// - Parameters:
+    ///   - name:  The `HTTPHeader` name.
+    ///   - value: The `HTTPHeader value.
+    public mutating func add(name: String, value: String) {
+        update(HTTPHeader(name: name, value: value))
+    }
+
+    /// Case-insensitively updates or appends the provided `HTTPHeader` into the instance.
+    ///
+    /// - Parameter header: The `HTTPHeader` to update or append.
+    public mutating func add(_ header: HTTPHeader) {
+        update(header)
+    }
+
+    /// Case-insensitively updates or appends an `HTTPHeader` into the instance using the provided `name` and `value`.
+    ///
+    /// - Parameters:
+    ///   - name:  The `HTTPHeader` name.
+    ///   - value: The `HTTPHeader value.
+    public mutating func update(name: String, value: String) {
+        update(HTTPHeader(name: name, value: value))
+    }
+
+    /// Case-insensitively updates or appends the provided `HTTPHeader` into the instance.
+    ///
+    /// - Parameter header: The `HTTPHeader` to update or append.
+    public mutating func update(_ header: HTTPHeader) {
+        guard let index = headers.index(of: header.name) else {
+            headers.append(header)
+            return
+        }
+
+        headers.replaceSubrange(index...index, with: [header])
+    }
+
+    /// Case-insensitively removes an `HTTPHeader`, if it exists, from the instance.
+    ///
+    /// - Parameter name: The name of the `HTTPHeader` to remove.
+    public mutating func remove(name: String) {
+        guard let index = headers.index(of: name) else { return }
+
+        headers.remove(at: index)
+    }
+
+    /// Sort the current instance by header name.
+    public mutating func sort() {
+        headers.sort { $0.name < $1.name }
+    }
+
+    /// Returns an instance sorted by header name.
+    ///
+    /// - Returns: A copy of the current instance sorted by name.
+    public func sorted() -> HTTPHeaders {
+        return HTTPHeaders(headers.sorted { $0.name < $1.name })
+    }
+
+    /// Case-insensitively find a header's value by name.
+    ///
+    /// - Parameter name: The name of the header to search for, case-insensitively.
+    ///
+    /// - Returns:        The value of header, if it exists.
+    public func value(for name: String) -> String? {
+        guard let index = headers.index(of: name) else { return nil }
+
+        return headers[index].value
+    }
+
+    /// Case-insensitively access the header with the given name.
+    ///
+    /// - Parameter name: The name of the header.
+    public subscript(_ name: String) -> String? {
+        get { return value(for: name) }
+        set {
+            if let value = newValue {
+                update(name: name, value: value)
+            } else {
+                remove(name: name)
+            }
+        }
+    }
+
+    /// The dictionary representation of all headers.
+    ///
+    /// This representation does not preserve the current order of the instance.
+    public var dictionary: [String: String] {
+        let namesAndValues = headers.map { ($0.name, $0.value) }
+
+        return Dictionary(namesAndValues, uniquingKeysWith: { _, last in last })
+    }
+}
+
+extension HTTPHeaders: ExpressibleByDictionaryLiteral {
+    public init(dictionaryLiteral elements: (String, String)...) {
+        self.init()
+
+        elements.forEach { update(name: $0.0, value: $0.1) }
+    }
+}
+
+extension HTTPHeaders: ExpressibleByArrayLiteral {
+    public init(arrayLiteral elements: HTTPHeader...) {
+        self.init(elements)
+    }
+}
+
+extension HTTPHeaders: Sequence {
+    public func makeIterator() -> IndexingIterator<[HTTPHeader]> {
+        return headers.makeIterator()
+    }
+}
+
+extension HTTPHeaders: Collection {
+    public var startIndex: Int {
+        return headers.startIndex
+    }
+
+    public var endIndex: Int {
+        return headers.endIndex
+    }
+
+    public subscript(position: Int) -> HTTPHeader {
+        return headers[position]
+    }
+
+    public func index(after i: Int) -> Int {
+        return headers.index(after: i)
+    }
+}
+
+extension HTTPHeaders: CustomStringConvertible {
+    public var description: String {
+        return headers.map { $0.description }
+            .joined(separator: "\n")
+    }
+}
+
+// MARK: - HTTPHeader
+
+/// A representation of a single HTTP header's name / value pair.
+public struct HTTPHeader: Hashable {
+    /// Name of the header.
+    public let name: String
+
+    /// Value of the header.
+    public let value: String
+
+    /// Creates an instance from the given `name` and `value`.
+    ///
+    /// - Parameters:
+    ///   - name:  The name of the header.
+    ///   - value: The value of the header.
+    public init(name: String, value: String) {
+        self.name = name
+        self.value = value
+    }
+}
+
+extension HTTPHeader: CustomStringConvertible {
+    public var description: String {
+        return "\(name): \(value)"
+    }
+}
+
+extension HTTPHeader {
+    /// Returns an `Accept` header.
+    ///
+    /// - Parameter value: The `Accept` value.
+    /// - Returns:         The header.
+    public static func accept(_ value: String) -> HTTPHeader {
+        return HTTPHeader(name: "Accept", value: value)
+    }
+
+    /// Returns an `Accept-Charset` header.
+    ///
+    /// - Parameter value: The `Accept-Charset` value.
+    /// - Returns:         The header.
+    public static func acceptCharset(_ value: String) -> HTTPHeader {
+        return HTTPHeader(name: "Accept-Charset", value: value)
+    }
+
+    /// Returns an `Accept-Language` header.
+    ///
+    /// Alamofire offers a default Accept-Language header that accumulates and encodes the system's preferred languages.
+    /// Use `HTTPHeader.defaultAcceptLanguage`.
+    ///
+    /// - Parameter value: The `Accept-Language` value.
+    ///
+    /// - Returns:         The header.
+    public static func acceptLanguage(_ value: String) -> HTTPHeader {
+        return HTTPHeader(name: "Accept-Language", value: value)
+    }
+
+    /// Returns an `Accept-Encoding` header.
+    ///
+    /// Alamofire offers a default accept encoding value that provides the most common values. Use
+    /// `HTTPHeader.defaultAcceptEncoding`.
+    ///
+    /// - Parameter value: The `Accept-Encoding` value.
+    ///
+    /// - Returns:         The header
+    public static func acceptEncoding(_ value: String) -> HTTPHeader {
+        return HTTPHeader(name: "Accept-Encoding", value: value)
+    }
+
+    /// Returns a `Basic` `Authorization` header using the `username` and `password` provided.
+    ///
+    /// - Parameters:
+    ///   - username: The username of the header.
+    ///   - password: The password of the header.
+    ///
+    /// - Returns:    The header.
+    public static func authorization(username: String, password: String) -> HTTPHeader {
+        let credential = Data("\(username):\(password)".utf8).base64EncodedString()
+
+        return authorization("Basic \(credential)")
+    }
+
+    /// Returns a `Bearer` `Authorization` header using the `bearerToken` provided
+    ///
+    /// - Parameter bearerToken: The bearer token.
+    ///
+    /// - Returns:               The header.
+    public static func authorization(bearerToken: String) -> HTTPHeader {
+        return authorization("Bearer \(bearerToken)")
+    }
+
+    /// Returns an `Authorization` header.
+    ///
+    /// Alamofire provides built-in methods to produce `Authorization` headers. For a Basic `Authorization` header use
+    /// `HTTPHeader.authorization(username:password:)`. For a Bearer `Authorization` header, use
+    /// `HTTPHeader.authorization(bearerToken:)`.
+    ///
+    /// - Parameter value: The `Authorization` value.
+    ///
+    /// - Returns:         The header.
+    public static func authorization(_ value: String) -> HTTPHeader {
+        return HTTPHeader(name: "Authorization", value: value)
+    }
+
+    /// Returns a `Content-Disposition` header.
+    ///
+    /// - Parameter value: The `Content-Disposition` value.
+    ///
+    /// - Returns:         The header.
+    public static func contentDisposition(_ value: String) -> HTTPHeader {
+        return HTTPHeader(name: "Content-Disposition", value: value)
+    }
+
+    /// Returns a `Content-Type` header.
+    ///
+    /// All Alamofire `ParameterEncoding`s and `ParameterEncoder`s set the `Content-Type` of the request, so it may not be necessary to manually
+    /// set this value.
+    ///
+    /// - Parameter value: The `Content-Type` value.
+    ///
+    /// - Returns:         The header.
+    public static func contentType(_ value: String) -> HTTPHeader {
+        return HTTPHeader(name: "Content-Type", value: value)
+    }
+
+    /// Returns a `User-Agent` header.
+    ///
+    /// - Parameter value: The `User-Agent` value.
+    ///
+    /// - Returns:         The header.
+    public static func userAgent(_ value: String) -> HTTPHeader {
+        return HTTPHeader(name: "User-Agent", value: value)
+    }
+}
+
+extension Array where Element == HTTPHeader {
+    /// Case-insensitively finds the index of an `HTTPHeader` with the provided name, if it exists.
+    func index(of name: String) -> Int? {
+        let lowercasedName = name.lowercased()
+        return firstIndex { $0.name.lowercased() == lowercasedName }
+    }
+}
+
+// MARK: - Defaults
+
+public extension HTTPHeaders {
+    /// The default set of `HTTPHeaders` used by Alamofire. Includes `Accept-Encoding`, `Accept-Language`, and
+    /// `User-Agent`.
+    static let `default`: HTTPHeaders = [.defaultAcceptEncoding,
+                                         .defaultAcceptLanguage,
+                                         .defaultUserAgent]
+}
+
+extension HTTPHeader {
+    /// Returns Alamofire's default `Accept-Encoding` header, appropriate for the encodings supported by particular OS
+    /// versions.
+    ///
+    /// See the [Accept-Encoding HTTP header documentation](https://tools.ietf.org/html/rfc7230#section-4.2.3) .
+    public static let defaultAcceptEncoding: HTTPHeader = {
+        let encodings: [String]
+        if #available(iOS 11.0, macOS 10.13, tvOS 11.0, watchOS 4.0, *) {
+            encodings = ["br", "gzip", "deflate"]
+        } else {
+            encodings = ["gzip", "deflate"]
+        }
+
+        return .acceptEncoding(encodings.qualityEncoded())
+    }()
+
+    /// Returns Alamofire's default `Accept-Language` header, generated by querying `Locale` for the user's
+    /// `preferredLanguages`.
+    ///
+    /// See the [Accept-Language HTTP header documentation](https://tools.ietf.org/html/rfc7231#section-5.3.5).
+    public static let defaultAcceptLanguage: HTTPHeader = {
+        .acceptLanguage(Locale.preferredLanguages.prefix(6).qualityEncoded())
+    }()
+
+    /// Returns Alamofire's default `User-Agent` header.
+    ///
+    /// See the [User-Agent header documentation](https://tools.ietf.org/html/rfc7231#section-5.5.3).
+    ///
+    /// Example: `iOS Example/1.0 (org.alamofire.iOS-Example; build:1; iOS 13.0.0) Alamofire/5.0.0`
+    public static let defaultUserAgent: HTTPHeader = {
+        let userAgent: String = {
+            if let info = Bundle.main.infoDictionary {
+                let executable = info[kCFBundleExecutableKey as String] as? String ?? "Unknown"
+                let bundle = info[kCFBundleIdentifierKey as String] as? String ?? "Unknown"
+                let appVersion = info["CFBundleShortVersionString"] as? String ?? "Unknown"
+                let appBuild = info[kCFBundleVersionKey as String] as? String ?? "Unknown"
+
+                let osNameVersion: String = {
+                    let version = ProcessInfo.processInfo.operatingSystemVersion
+                    let versionString = "\(version.majorVersion).\(version.minorVersion).\(version.patchVersion)"
+                    // swiftformat:disable indent
+                    let osName: String = {
+                    #if os(iOS)
+                        return "iOS"
+                    #elseif os(watchOS)
+                        return "watchOS"
+                    #elseif os(tvOS)
+                        return "tvOS"
+                    #elseif os(macOS)
+                        return "macOS"
+                    #elseif os(Linux)
+                        return "Linux"
+                    #else
+                        return "Unknown"
+                    #endif
+                    }()
+                    // swiftformat:enable indent
+
+                    return "\(osName) \(versionString)"
+                }()
+
+                let alamofireVersion = "Alamofire/\(AF.version)"
+
+                return "\(executable)/\(appVersion) (\(bundle); build:\(appBuild); \(osNameVersion)) \(alamofireVersion)"
+            }
+
+            return "Alamofire"
+        }()
+
+        return .userAgent(userAgent)
+    }()
+}
+
+extension Collection where Element == String {
+    func qualityEncoded() -> String {
+        return enumerated().map { index, encoding in
+            let quality = 1.0 - (Double(index) * 0.1)
+            return "\(encoding);q=\(quality)"
+        }.joined(separator: ", ")
+    }
+}
+
+// MARK: - System Type Extensions
+
+extension URLRequest {
+    /// Returns `allHTTPHeaderFields` as `HTTPHeaders`.
+    public var headers: HTTPHeaders {
+        get { return allHTTPHeaderFields.map(HTTPHeaders.init) ?? HTTPHeaders() }
+        set { allHTTPHeaderFields = newValue.dictionary }
+    }
+}
+
+extension HTTPURLResponse {
+    /// Returns `allHeaderFields` as `HTTPHeaders`.
+    public var headers: HTTPHeaders {
+        return (allHeaderFields as? [String: String]).map(HTTPHeaders.init) ?? HTTPHeaders()
+    }
+}
+
+public extension URLSessionConfiguration {
+    /// Returns `httpAdditionalHeaders` as `HTTPHeaders`.
+    var headers: HTTPHeaders {
+        get { return (httpAdditionalHeaders as? [String: String]).map(HTTPHeaders.init) ?? HTTPHeaders() }
+        set { httpAdditionalHeaders = newValue.dictionary }
+    }
+}

trolley/Pods/Alamofire/Source/HTTPMethod.swift

@@ -0,0 +1,54 @@
+//
+//  HTTPMethod.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+/// Type representing HTTP methods. Raw `String` value is stored and compared case-sensitively, so
+/// `HTTPMethod.get != HTTPMethod(rawValue: "get")`.
+///
+/// See https://tools.ietf.org/html/rfc7231#section-4.3
+public struct HTTPMethod: RawRepresentable, Equatable, Hashable {
+    /// `CONNECT` method.
+    public static let connect = HTTPMethod(rawValue: "CONNECT")
+    /// `DELETE` method.
+    public static let delete = HTTPMethod(rawValue: "DELETE")
+    /// `GET` method.
+    public static let get = HTTPMethod(rawValue: "GET")
+    /// `HEAD` method.
+    public static let head = HTTPMethod(rawValue: "HEAD")
+    /// `OPTIONS` method.
+    public static let options = HTTPMethod(rawValue: "OPTIONS")
+    /// `PATCH` method.
+    public static let patch = HTTPMethod(rawValue: "PATCH")
+    /// `POST` method.
+    public static let post = HTTPMethod(rawValue: "POST")
+    /// `PUT` method.
+    public static let put = HTTPMethod(rawValue: "PUT")
+    /// `TRACE` method.
+    public static let trace = HTTPMethod(rawValue: "TRACE")
+
+    public let rawValue: String
+
+    public init(rawValue: String) {
+        self.rawValue = rawValue
+    }
+}

trolley/Pods/Alamofire/Source/MultipartFormData.swift

@@ -0,0 +1,544 @@
+//
+//  MultipartFormData.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+#if os(iOS) || os(watchOS) || os(tvOS)
+import MobileCoreServices
+#elseif os(macOS)
+import CoreServices
+#endif
+
+/// Constructs `multipart/form-data` for uploads within an HTTP or HTTPS body. There are currently two ways to encode
+/// multipart form data. The first way is to encode the data directly in memory. This is very efficient, but can lead
+/// to memory issues if the dataset is too large. The second way is designed for larger datasets and will write all the
+/// data to a single file on disk with all the proper boundary segmentation. The second approach MUST be used for
+/// larger datasets such as video content, otherwise your app may run out of memory when trying to encode the dataset.
+///
+/// For more information on `multipart/form-data` in general, please refer to the RFC-2388 and RFC-2045 specs as well
+/// and the w3 form documentation.
+///
+/// - https://www.ietf.org/rfc/rfc2388.txt
+/// - https://www.ietf.org/rfc/rfc2045.txt
+/// - https://www.w3.org/TR/html401/interact/forms.html#h-17.13
+open class MultipartFormData {
+    // MARK: - Helper Types
+
+    struct EncodingCharacters {
+        static let crlf = "\r\n"
+    }
+
+    struct BoundaryGenerator {
+        enum BoundaryType {
+            case initial, encapsulated, final
+        }
+
+        static func randomBoundary() -> String {
+            return String(format: "alamofire.boundary.%08x%08x", arc4random(), arc4random())
+        }
+
+        static func boundaryData(forBoundaryType boundaryType: BoundaryType, boundary: String) -> Data {
+            let boundaryText: String
+
+            switch boundaryType {
+            case .initial:
+                boundaryText = "--\(boundary)\(EncodingCharacters.crlf)"
+            case .encapsulated:
+                boundaryText = "\(EncodingCharacters.crlf)--\(boundary)\(EncodingCharacters.crlf)"
+            case .final:
+                boundaryText = "\(EncodingCharacters.crlf)--\(boundary)--\(EncodingCharacters.crlf)"
+            }
+
+            return Data(boundaryText.utf8)
+        }
+    }
+
+    class BodyPart {
+        let headers: HTTPHeaders
+        let bodyStream: InputStream
+        let bodyContentLength: UInt64
+        var hasInitialBoundary = false
+        var hasFinalBoundary = false
+
+        init(headers: HTTPHeaders, bodyStream: InputStream, bodyContentLength: UInt64) {
+            self.headers = headers
+            self.bodyStream = bodyStream
+            self.bodyContentLength = bodyContentLength
+        }
+    }
+
+    // MARK: - Properties
+
+    /// Default memory threshold used when encoding `MultipartFormData`, in bytes.
+    public static let encodingMemoryThreshold: UInt64 = 10_000_000
+
+    /// The `Content-Type` header value containing the boundary used to generate the `multipart/form-data`.
+    open lazy var contentType: String = "multipart/form-data; boundary=\(self.boundary)"
+
+    /// The content length of all body parts used to generate the `multipart/form-data` not including the boundaries.
+    public var contentLength: UInt64 { return bodyParts.reduce(0) { $0 + $1.bodyContentLength } }
+
+    /// The boundary used to separate the body parts in the encoded form data.
+    public let boundary: String
+
+    let fileManager: FileManager
+
+    private var bodyParts: [BodyPart]
+    private var bodyPartError: AFError?
+    private let streamBufferSize: Int
+
+    // MARK: - Lifecycle
+
+    /// Creates an instance.
+    ///
+    /// - Parameters:
+    ///   - fileManager: `FileManager` to use for file operations, if needed.
+    ///   - boundary: Boundary `String` used to separate body parts.
+    public init(fileManager: FileManager = .default, boundary: String? = nil) {
+        self.fileManager = fileManager
+        self.boundary = boundary ?? BoundaryGenerator.randomBoundary()
+        bodyParts = []
+
+        //
+        // The optimal read/write buffer size in bytes for input and output streams is 1024 (1KB). For more
+        // information, please refer to the following article:
+        //   - https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/Streams/Articles/ReadingInputStreams.html
+        //
+        streamBufferSize = 1024
+    }
+
+    // MARK: - Body Parts
+
+    /// Creates a body part from the data and appends it to the instance.
+    ///
+    /// The body part data will be encoded using the following format:
+    ///
+    /// - `Content-Disposition: form-data; name=#{name}; filename=#{filename}` (HTTP Header)
+    /// - `Content-Type: #{mimeType}` (HTTP Header)
+    /// - Encoded file data
+    /// - Multipart form boundary
+    ///
+    /// - Parameters:
+    ///   - data:     `Data` to encoding into the instance.
+    ///   - name:     Name to associate with the `Data` in the `Content-Disposition` HTTP header.
+    ///   - fileName: Filename to associate with the `Data` in the `Content-Disposition` HTTP header.
+    ///   - mimeType: MIME type to associate with the data in the `Content-Type` HTTP header.
+    public func append(_ data: Data, withName name: String, fileName: String? = nil, mimeType: String? = nil) {
+        let headers = contentHeaders(withName: name, fileName: fileName, mimeType: mimeType)
+        let stream = InputStream(data: data)
+        let length = UInt64(data.count)
+
+        append(stream, withLength: length, headers: headers)
+    }
+
+    /// Creates a body part from the file and appends it to the instance.
+    ///
+    /// The body part data will be encoded using the following format:
+    ///
+    /// - `Content-Disposition: form-data; name=#{name}; filename=#{generated filename}` (HTTP Header)
+    /// - `Content-Type: #{generated mimeType}` (HTTP Header)
+    /// - Encoded file data
+    /// - Multipart form boundary
+    ///
+    /// The filename in the `Content-Disposition` HTTP header is generated from the last path component of the
+    /// `fileURL`. The `Content-Type` HTTP header MIME type is generated by mapping the `fileURL` extension to the
+    /// system associated MIME type.
+    ///
+    /// - Parameters:
+    ///   - fileURL: `URL` of the file whose content will be encoded into the instance.
+    ///   - name:    Name to associate with the file content in the `Content-Disposition` HTTP header.
+    public func append(_ fileURL: URL, withName name: String) {
+        let fileName = fileURL.lastPathComponent
+        let pathExtension = fileURL.pathExtension
+
+        if !fileName.isEmpty && !pathExtension.isEmpty {
+            let mime = mimeType(forPathExtension: pathExtension)
+            append(fileURL, withName: name, fileName: fileName, mimeType: mime)
+        } else {
+            setBodyPartError(withReason: .bodyPartFilenameInvalid(in: fileURL))
+        }
+    }
+
+    /// Creates a body part from the file and appends it to the instance.
+    ///
+    /// The body part data will be encoded using the following format:
+    ///
+    /// - Content-Disposition: form-data; name=#{name}; filename=#{filename} (HTTP Header)
+    /// - Content-Type: #{mimeType} (HTTP Header)
+    /// - Encoded file data
+    /// - Multipart form boundary
+    ///
+    /// - Parameters:
+    ///   - fileURL:  `URL` of the file whose content will be encoded into the instance.
+    ///   - name:     Name to associate with the file content in the `Content-Disposition` HTTP header.
+    ///   - fileName: Filename to associate with the file content in the `Content-Disposition` HTTP header.
+    ///   - mimeType: MIME type to associate with the file content in the `Content-Type` HTTP header.
+    public func append(_ fileURL: URL, withName name: String, fileName: String, mimeType: String) {
+        let headers = contentHeaders(withName: name, fileName: fileName, mimeType: mimeType)
+
+        //============================================================
+        //                 Check 1 - is file URL?
+        //============================================================
+
+        guard fileURL.isFileURL else {
+            setBodyPartError(withReason: .bodyPartURLInvalid(url: fileURL))
+            return
+        }
+
+        //============================================================
+        //              Check 2 - is file URL reachable?
+        //============================================================
+
+        do {
+            let isReachable = try fileURL.checkPromisedItemIsReachable()
+            guard isReachable else {
+                setBodyPartError(withReason: .bodyPartFileNotReachable(at: fileURL))
+                return
+            }
+        } catch {
+            setBodyPartError(withReason: .bodyPartFileNotReachableWithError(atURL: fileURL, error: error))
+            return
+        }
+
+        //============================================================
+        //            Check 3 - is file URL a directory?
+        //============================================================
+
+        var isDirectory: ObjCBool = false
+        let path = fileURL.path
+
+        guard fileManager.fileExists(atPath: path, isDirectory: &isDirectory) && !isDirectory.boolValue else {
+            setBodyPartError(withReason: .bodyPartFileIsDirectory(at: fileURL))
+            return
+        }
+
+        //============================================================
+        //          Check 4 - can the file size be extracted?
+        //============================================================
+
+        let bodyContentLength: UInt64
+
+        do {
+            guard let fileSize = try fileManager.attributesOfItem(atPath: path)[.size] as? NSNumber else {
+                setBodyPartError(withReason: .bodyPartFileSizeNotAvailable(at: fileURL))
+                return
+            }
+
+            bodyContentLength = fileSize.uint64Value
+        } catch {
+            setBodyPartError(withReason: .bodyPartFileSizeQueryFailedWithError(forURL: fileURL, error: error))
+            return
+        }
+
+        //============================================================
+        //       Check 5 - can a stream be created from file URL?
+        //============================================================
+
+        guard let stream = InputStream(url: fileURL) else {
+            setBodyPartError(withReason: .bodyPartInputStreamCreationFailed(for: fileURL))
+            return
+        }
+
+        append(stream, withLength: bodyContentLength, headers: headers)
+    }
+
+    /// Creates a body part from the stream and appends it to the instance.
+    ///
+    /// The body part data will be encoded using the following format:
+    ///
+    /// - `Content-Disposition: form-data; name=#{name}; filename=#{filename}` (HTTP Header)
+    /// - `Content-Type: #{mimeType}` (HTTP Header)
+    /// - Encoded stream data
+    /// - Multipart form boundary
+    ///
+    /// - Parameters:
+    ///   - stream:   `InputStream` to encode into the instance.
+    ///   - length:   Length, in bytes, of the stream.
+    ///   - name:     Name to associate with the stream content in the `Content-Disposition` HTTP header.
+    ///   - fileName: Filename to associate with the stream content in the `Content-Disposition` HTTP header.
+    ///   - mimeType: MIME type to associate with the stream content in the `Content-Type` HTTP header.
+    public func append(_ stream: InputStream,
+                       withLength length: UInt64,
+                       name: String,
+                       fileName: String,
+                       mimeType: String) {
+        let headers = contentHeaders(withName: name, fileName: fileName, mimeType: mimeType)
+        append(stream, withLength: length, headers: headers)
+    }
+
+    /// Creates a body part with the stream, length, and headers and appends it to the instance.
+    ///
+    /// The body part data will be encoded using the following format:
+    ///
+    /// - HTTP headers
+    /// - Encoded stream data
+    /// - Multipart form boundary
+    ///
+    /// - Parameters:
+    ///   - stream:  `InputStream` to encode into the instance.
+    ///   - length:  Length, in bytes, of the stream.
+    ///   - headers: `HTTPHeaders` for the body part.
+    public func append(_ stream: InputStream, withLength length: UInt64, headers: HTTPHeaders) {
+        let bodyPart = BodyPart(headers: headers, bodyStream: stream, bodyContentLength: length)
+        bodyParts.append(bodyPart)
+    }
+
+    // MARK: - Data Encoding
+
+    /// Encodes all appended body parts into a single `Data` value.
+    ///
+    /// - Note: This method will load all the appended body parts into memory all at the same time. This method should
+    ///         only be used when the encoded data will have a small memory footprint. For large data cases, please use
+    ///         the `writeEncodedData(to:))` method.
+    ///
+    /// - Returns: The encoded `Data`, if encoding is successful.
+    /// - Throws:  An `AFError` if encoding encounters an error.
+    public func encode() throws -> Data {
+        if let bodyPartError = bodyPartError {
+            throw bodyPartError
+        }
+
+        var encoded = Data()
+
+        bodyParts.first?.hasInitialBoundary = true
+        bodyParts.last?.hasFinalBoundary = true
+
+        for bodyPart in bodyParts {
+            let encodedData = try encode(bodyPart)
+            encoded.append(encodedData)
+        }
+
+        return encoded
+    }
+
+    /// Writes all appended body parts to the given file `URL`.
+    ///
+    /// This process is facilitated by reading and writing with input and output streams, respectively. Thus,
+    /// this approach is very memory efficient and should be used for large body part data.
+    ///
+    /// - Parameter fileURL: File `URL` to which to write the form data.
+    /// - Throws:            An `AFError` if encoding encounters an error.
+    public func writeEncodedData(to fileURL: URL) throws {
+        if let bodyPartError = bodyPartError {
+            throw bodyPartError
+        }
+
+        if fileManager.fileExists(atPath: fileURL.path) {
+            throw AFError.multipartEncodingFailed(reason: .outputStreamFileAlreadyExists(at: fileURL))
+        } else if !fileURL.isFileURL {
+            throw AFError.multipartEncodingFailed(reason: .outputStreamURLInvalid(url: fileURL))
+        }
+
+        guard let outputStream = OutputStream(url: fileURL, append: false) else {
+            throw AFError.multipartEncodingFailed(reason: .outputStreamCreationFailed(for: fileURL))
+        }
+
+        outputStream.open()
+        defer { outputStream.close() }
+
+        bodyParts.first?.hasInitialBoundary = true
+        bodyParts.last?.hasFinalBoundary = true
+
+        for bodyPart in bodyParts {
+            try write(bodyPart, to: outputStream)
+        }
+    }
+
+    // MARK: - Private - Body Part Encoding
+
+    private func encode(_ bodyPart: BodyPart) throws -> Data {
+        var encoded = Data()
+
+        let initialData = bodyPart.hasInitialBoundary ? initialBoundaryData() : encapsulatedBoundaryData()
+        encoded.append(initialData)
+
+        let headerData = encodeHeaders(for: bodyPart)
+        encoded.append(headerData)
+
+        let bodyStreamData = try encodeBodyStream(for: bodyPart)
+        encoded.append(bodyStreamData)
+
+        if bodyPart.hasFinalBoundary {
+            encoded.append(finalBoundaryData())
+        }
+
+        return encoded
+    }
+
+    private func encodeHeaders(for bodyPart: BodyPart) -> Data {
+        let headerText = bodyPart.headers.map { "\($0.name): \($0.value)\(EncodingCharacters.crlf)" }
+            .joined()
+            + EncodingCharacters.crlf
+
+        return Data(headerText.utf8)
+    }
+
+    private func encodeBodyStream(for bodyPart: BodyPart) throws -> Data {
+        let inputStream = bodyPart.bodyStream
+        inputStream.open()
+        defer { inputStream.close() }
+
+        var encoded = Data()
+
+        while inputStream.hasBytesAvailable {
+            var buffer = [UInt8](repeating: 0, count: streamBufferSize)
+            let bytesRead = inputStream.read(&buffer, maxLength: streamBufferSize)
+
+            if let error = inputStream.streamError {
+                throw AFError.multipartEncodingFailed(reason: .inputStreamReadFailed(error: error))
+            }
+
+            if bytesRead > 0 {
+                encoded.append(buffer, count: bytesRead)
+            } else {
+                break
+            }
+        }
+
+        return encoded
+    }
+
+    // MARK: - Private - Writing Body Part to Output Stream
+
+    private func write(_ bodyPart: BodyPart, to outputStream: OutputStream) throws {
+        try writeInitialBoundaryData(for: bodyPart, to: outputStream)
+        try writeHeaderData(for: bodyPart, to: outputStream)
+        try writeBodyStream(for: bodyPart, to: outputStream)
+        try writeFinalBoundaryData(for: bodyPart, to: outputStream)
+    }
+
+    private func writeInitialBoundaryData(for bodyPart: BodyPart, to outputStream: OutputStream) throws {
+        let initialData = bodyPart.hasInitialBoundary ? initialBoundaryData() : encapsulatedBoundaryData()
+        return try write(initialData, to: outputStream)
+    }
+
+    private func writeHeaderData(for bodyPart: BodyPart, to outputStream: OutputStream) throws {
+        let headerData = encodeHeaders(for: bodyPart)
+        return try write(headerData, to: outputStream)
+    }
+
+    private func writeBodyStream(for bodyPart: BodyPart, to outputStream: OutputStream) throws {
+        let inputStream = bodyPart.bodyStream
+
+        inputStream.open()
+        defer { inputStream.close() }
+
+        while inputStream.hasBytesAvailable {
+            var buffer = [UInt8](repeating: 0, count: streamBufferSize)
+            let bytesRead = inputStream.read(&buffer, maxLength: streamBufferSize)
+
+            if let streamError = inputStream.streamError {
+                throw AFError.multipartEncodingFailed(reason: .inputStreamReadFailed(error: streamError))
+            }
+
+            if bytesRead > 0 {
+                if buffer.count != bytesRead {
+                    buffer = Array(buffer[0..<bytesRead])
+                }
+
+                try write(&buffer, to: outputStream)
+            } else {
+                break
+            }
+        }
+    }
+
+    private func writeFinalBoundaryData(for bodyPart: BodyPart, to outputStream: OutputStream) throws {
+        if bodyPart.hasFinalBoundary {
+            return try write(finalBoundaryData(), to: outputStream)
+        }
+    }
+
+    // MARK: - Private - Writing Buffered Data to Output Stream
+
+    private func write(_ data: Data, to outputStream: OutputStream) throws {
+        var buffer = [UInt8](repeating: 0, count: data.count)
+        data.copyBytes(to: &buffer, count: data.count)
+
+        return try write(&buffer, to: outputStream)
+    }
+
+    private func write(_ buffer: inout [UInt8], to outputStream: OutputStream) throws {
+        var bytesToWrite = buffer.count
+
+        while bytesToWrite > 0, outputStream.hasSpaceAvailable {
+            let bytesWritten = outputStream.write(buffer, maxLength: bytesToWrite)
+
+            if let error = outputStream.streamError {
+                throw AFError.multipartEncodingFailed(reason: .outputStreamWriteFailed(error: error))
+            }
+
+            bytesToWrite -= bytesWritten
+
+            if bytesToWrite > 0 {
+                buffer = Array(buffer[bytesWritten..<buffer.count])
+            }
+        }
+    }
+
+    // MARK: - Private - Mime Type
+
+    private func mimeType(forPathExtension pathExtension: String) -> String {
+        if
+            let id = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, pathExtension as CFString, nil)?.takeRetainedValue(),
+            let contentType = UTTypeCopyPreferredTagWithClass(id, kUTTagClassMIMEType)?.takeRetainedValue() {
+            return contentType as String
+        }
+
+        return "application/octet-stream"
+    }
+
+    // MARK: - Private - Content Headers
+
+    private func contentHeaders(withName name: String, fileName: String? = nil, mimeType: String? = nil) -> HTTPHeaders {
+        var disposition = "form-data; name=\"\(name)\""
+        if let fileName = fileName { disposition += "; filename=\"\(fileName)\"" }
+
+        var headers: HTTPHeaders = [.contentDisposition(disposition)]
+        if let mimeType = mimeType { headers.add(.contentType(mimeType)) }
+
+        return headers
+    }
+
+    // MARK: - Private - Boundary Encoding
+
+    private func initialBoundaryData() -> Data {
+        return BoundaryGenerator.boundaryData(forBoundaryType: .initial, boundary: boundary)
+    }
+
+    private func encapsulatedBoundaryData() -> Data {
+        return BoundaryGenerator.boundaryData(forBoundaryType: .encapsulated, boundary: boundary)
+    }
+
+    private func finalBoundaryData() -> Data {
+        return BoundaryGenerator.boundaryData(forBoundaryType: .final, boundary: boundary)
+    }
+
+    // MARK: - Private - Errors
+
+    private func setBodyPartError(withReason reason: AFError.MultipartEncodingFailureReason) {
+        guard bodyPartError == nil else { return }
+        bodyPartError = AFError.multipartEncodingFailed(reason: reason)
+    }
+}

trolley/Pods/Alamofire/Source/MultipartUpload.swift

@@ -0,0 +1,87 @@
+//
+//  MultipartUpload.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// Internal type which encapsulates a `MultipartFormData` upload.
+final class MultipartUpload {
+    lazy var result = Result { try build() }
+
+    let isInBackgroundSession: Bool
+    let multipartFormData: MultipartFormData
+    let encodingMemoryThreshold: UInt64
+    let request: URLRequestConvertible
+    let fileManager: FileManager
+
+    init(isInBackgroundSession: Bool,
+         encodingMemoryThreshold: UInt64,
+         request: URLRequestConvertible,
+         multipartFormData: MultipartFormData) {
+        self.isInBackgroundSession = isInBackgroundSession
+        self.encodingMemoryThreshold = encodingMemoryThreshold
+        self.request = request
+        fileManager = multipartFormData.fileManager
+        self.multipartFormData = multipartFormData
+    }
+
+    func build() throws -> (request: URLRequest, uploadable: UploadRequest.Uploadable) {
+        var urlRequest = try request.asURLRequest()
+        urlRequest.setValue(multipartFormData.contentType, forHTTPHeaderField: "Content-Type")
+
+        let uploadable: UploadRequest.Uploadable
+        if multipartFormData.contentLength < encodingMemoryThreshold && !isInBackgroundSession {
+            let data = try multipartFormData.encode()
+
+            uploadable = .data(data)
+        } else {
+            let tempDirectoryURL = fileManager.temporaryDirectory
+            let directoryURL = tempDirectoryURL.appendingPathComponent("org.alamofire.manager/multipart.form.data")
+            let fileName = UUID().uuidString
+            let fileURL = directoryURL.appendingPathComponent(fileName)
+
+            try fileManager.createDirectory(at: directoryURL, withIntermediateDirectories: true, attributes: nil)
+
+            do {
+                try multipartFormData.writeEncodedData(to: fileURL)
+            } catch {
+                // Cleanup after attempted write if it fails.
+                try? fileManager.removeItem(at: fileURL)
+            }
+
+            uploadable = .file(fileURL, shouldRemove: true)
+        }
+
+        return (request: urlRequest, uploadable: uploadable)
+    }
+}
+
+extension MultipartUpload: UploadConvertible {
+    func asURLRequest() throws -> URLRequest {
+        return try result.get().request
+    }
+
+    func createUploadable() throws -> UploadRequest.Uploadable {
+        return try result.get().uploadable
+    }
+}

trolley/Pods/Alamofire/Source/NetworkReachabilityManager.swift

@@ -0,0 +1,266 @@
+//
+//  NetworkReachabilityManager.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+#if !(os(watchOS) || os(Linux))
+
+import Foundation
+import SystemConfiguration
+
+/// The `NetworkReachabilityManager` class listens for reachability changes of hosts and addresses for both cellular and
+/// WiFi network interfaces.
+///
+/// Reachability can be used to determine background information about why a network operation failed, or to retry
+/// network requests when a connection is established. It should not be used to prevent a user from initiating a network
+/// request, as it's possible that an initial request may be required to establish reachability.
+open class NetworkReachabilityManager {
+    /// Defines the various states of network reachability.
+    public enum NetworkReachabilityStatus {
+        /// It is unknown whether the network is reachable.
+        case unknown
+        /// The network is not reachable.
+        case notReachable
+        /// The network is reachable on the associated `ConnectionType`.
+        case reachable(ConnectionType)
+
+        init(_ flags: SCNetworkReachabilityFlags) {
+            guard flags.isActuallyReachable else { self = .notReachable; return }
+
+            var networkStatus: NetworkReachabilityStatus = .reachable(.ethernetOrWiFi)
+
+            if flags.isCellular { networkStatus = .reachable(.cellular) }
+
+            self = networkStatus
+        }
+
+        /// Defines the various connection types detected by reachability flags.
+        public enum ConnectionType {
+            /// The connection type is either over Ethernet or WiFi.
+            case ethernetOrWiFi
+            /// The connection type is a cellular connection.
+            case cellular
+        }
+    }
+
+    /// A closure executed when the network reachability status changes. The closure takes a single argument: the
+    /// network reachability status.
+    public typealias Listener = (NetworkReachabilityStatus) -> Void
+
+    /// Default `NetworkReachabilityManager` for the zero address and a `listenerQueue` of `.main`.
+    public static let `default` = NetworkReachabilityManager()
+
+    // MARK: - Properties
+
+    /// Whether the network is currently reachable.
+    open var isReachable: Bool { return isReachableOnCellular || isReachableOnEthernetOrWiFi }
+
+    /// Whether the network is currently reachable over the cellular interface.
+    ///
+    /// - Note: Using this property to decide whether to make a high or low bandwidth request is not recommended.
+    ///         Instead, set the `allowsCellularAccess` on any `URLRequest`s being issued.
+    ///
+    open var isReachableOnCellular: Bool { return status == .reachable(.cellular) }
+
+    /// Whether the network is currently reachable over Ethernet or WiFi interface.
+    open var isReachableOnEthernetOrWiFi: Bool { return status == .reachable(.ethernetOrWiFi) }
+
+    /// `DispatchQueue` on which reachability will update.
+    public let reachabilityQueue = DispatchQueue(label: "org.alamofire.reachabilityQueue")
+
+    /// Flags of the current reachability type, if any.
+    open var flags: SCNetworkReachabilityFlags? {
+        var flags = SCNetworkReachabilityFlags()
+
+        return (SCNetworkReachabilityGetFlags(reachability, &flags)) ? flags : nil
+    }
+
+    /// The current network reachability status.
+    open var status: NetworkReachabilityStatus {
+        return flags.map(NetworkReachabilityStatus.init) ?? .unknown
+    }
+
+    /// Mutable state storage.
+    struct MutableState {
+        /// A closure executed when the network reachability status changes.
+        var listener: Listener?
+        /// `DispatchQueue` on which listeners will be called.
+        var listenerQueue: DispatchQueue?
+        /// Previously calculated status.
+        var previousStatus: NetworkReachabilityStatus?
+    }
+
+    /// `SCNetworkReachability` instance providing notifications.
+    private let reachability: SCNetworkReachability
+
+    /// Protected storage for mutable state.
+    private let mutableState = Protector(MutableState())
+
+    // MARK: - Initialization
+
+    /// Creates an instance with the specified host.
+    ///
+    /// - Note: The `host` value must *not* contain a scheme, just the hostname.
+    ///
+    /// - Parameters:
+    ///   - host:          Host used to evaluate network reachability. Must *not* include the scheme (e.g. `https`).
+    public convenience init?(host: String) {
+        guard let reachability = SCNetworkReachabilityCreateWithName(nil, host) else { return nil }
+
+        self.init(reachability: reachability)
+    }
+
+    /// Creates an instance that monitors the address 0.0.0.0.
+    ///
+    /// Reachability treats the 0.0.0.0 address as a special token that causes it to monitor the general routing
+    /// status of the device, both IPv4 and IPv6.
+    public convenience init?() {
+        var zero = sockaddr()
+        zero.sa_len = UInt8(MemoryLayout<sockaddr>.size)
+        zero.sa_family = sa_family_t(AF_INET)
+
+        guard let reachability = SCNetworkReachabilityCreateWithAddress(nil, &zero) else { return nil }
+
+        self.init(reachability: reachability)
+    }
+
+    private init(reachability: SCNetworkReachability) {
+        self.reachability = reachability
+    }
+
+    deinit {
+        stopListening()
+    }
+
+    // MARK: - Listening
+
+    /// Starts listening for changes in network reachability status.
+    ///
+    /// - Note: Stops and removes any existing listener.
+    ///
+    /// - Parameters:
+    ///   - queue:    `DispatchQueue` on which to call the `listener` closure. `.main` by default.
+    ///   - listener: `Listener` closure called when reachability changes.
+    ///
+    /// - Returns: `true` if listening was started successfully, `false` otherwise.
+    @discardableResult
+    open func startListening(onQueue queue: DispatchQueue = .main,
+                             onUpdatePerforming listener: @escaping Listener) -> Bool {
+        stopListening()
+
+        mutableState.write { state in
+            state.listenerQueue = queue
+            state.listener = listener
+        }
+
+        var context = SCNetworkReachabilityContext(version: 0,
+                                                   info: Unmanaged.passRetained(self).toOpaque(),
+                                                   retain: nil,
+                                                   release: nil,
+                                                   copyDescription: nil)
+        let callback: SCNetworkReachabilityCallBack = { _, flags, info in
+            guard let info = info else { return }
+
+            let instance = Unmanaged<NetworkReachabilityManager>.fromOpaque(info).takeUnretainedValue()
+            instance.notifyListener(flags)
+        }
+
+        let queueAdded = SCNetworkReachabilitySetDispatchQueue(reachability, reachabilityQueue)
+        let callbackAdded = SCNetworkReachabilitySetCallback(reachability, callback, &context)
+
+        // Manually call listener to give initial state, since the framework may not.
+        if let currentFlags = flags {
+            reachabilityQueue.async {
+                self.notifyListener(currentFlags)
+            }
+        }
+
+        return callbackAdded && queueAdded
+    }
+
+    /// Stops listening for changes in network reachability status.
+    open func stopListening() {
+        SCNetworkReachabilitySetCallback(reachability, nil, nil)
+        SCNetworkReachabilitySetDispatchQueue(reachability, nil)
+        mutableState.write { state in
+            state.listener = nil
+            state.listenerQueue = nil
+            state.previousStatus = nil
+        }
+    }
+
+    // MARK: - Internal - Listener Notification
+
+    /// Calls the `listener` closure of the `listenerQueue` if the computed status hasn't changed.
+    ///
+    /// - Note: Should only be called from the `reachabilityQueue`.
+    ///
+    /// - Parameter flags: `SCNetworkReachabilityFlags` to use to calculate the status.
+    func notifyListener(_ flags: SCNetworkReachabilityFlags) {
+        let newStatus = NetworkReachabilityStatus(flags)
+
+        mutableState.write { state in
+            guard state.previousStatus != newStatus else { return }
+
+            state.previousStatus = newStatus
+
+            let listener = state.listener
+            state.listenerQueue?.async { listener?(newStatus) }
+        }
+    }
+}
+
+// MARK: -
+
+extension NetworkReachabilityManager.NetworkReachabilityStatus: Equatable {}
+
+extension SCNetworkReachabilityFlags {
+    var isReachable: Bool { return contains(.reachable) }
+    var isConnectionRequired: Bool { return contains(.connectionRequired) }
+    var canConnectAutomatically: Bool { return contains(.connectionOnDemand) || contains(.connectionOnTraffic) }
+    var canConnectWithoutUserInteraction: Bool { return canConnectAutomatically && !contains(.interventionRequired) }
+    var isActuallyReachable: Bool { return isReachable && (!isConnectionRequired || canConnectWithoutUserInteraction) }
+    var isCellular: Bool {
+#if os(iOS) || os(tvOS)
+        return contains(.isWWAN)
+#else
+        return false
+#endif
+    }
+
+    /// Human readable `String` for all states, to help with debugging.
+    var readableDescription: String {
+        let W = isCellular ? "W" : "-"
+        let R = isReachable ? "R" : "-"
+        let c = isConnectionRequired ? "c" : "-"
+        let t = contains(.transientConnection) ? "t" : "-"
+        let i = contains(.interventionRequired) ? "i" : "-"
+        let C = contains(.connectionOnTraffic) ? "C" : "-"
+        let D = contains(.connectionOnDemand) ? "D" : "-"
+        let l = contains(.isLocalAddress) ? "l" : "-"
+        let d = contains(.isDirect) ? "d" : "-"
+        let a = contains(.connectionAutomatic) ? "a" : "-"
+
+        return "\(W)\(R) \(c)\(t)\(i)\(C)\(D)\(l)\(d)\(a)"
+    }
+}
+#endif

trolley/Pods/Alamofire/Source/Notifications.swift

@@ -0,0 +1,115 @@
+//
+//  Notifications.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+public extension Request {
+    /// Posted when a `Request` is resumed. The `Notification` contains the resumed `Request`.
+    static let didResumeNotification = Notification.Name(rawValue: "org.alamofire.notification.name.request.didResume")
+    /// Posted when a `Request` is suspended. The `Notification` contains the suspended `Request`.
+    static let didSuspendNotification = Notification.Name(rawValue: "org.alamofire.notification.name.request.didSuspend")
+    /// Posted when a `Request` is cancelled. The `Notification` contains the cancelled `Request`.
+    static let didCancelNotification = Notification.Name(rawValue: "org.alamofire.notification.name.request.didCancel")
+    /// Posted when a `Request` is finished. The `Notification` contains the completed `Request`.
+    static let didFinishNotification = Notification.Name(rawValue: "org.alamofire.notification.name.request.didFinish")
+
+    /// Posted when a `URLSessionTask` is resumed. The `Notification` contains the `Request` associated with the `URLSessionTask`.
+    static let didResumeTaskNotification = Notification.Name(rawValue: "org.alamofire.notification.name.request.didResumeTask")
+    /// Posted when a `URLSessionTask` is suspended. The `Notification` contains the `Request` associated with the `URLSessionTask`.
+    static let didSuspendTaskNotification = Notification.Name(rawValue: "org.alamofire.notification.name.request.didSuspendTask")
+    /// Posted when a `URLSessionTask` is cancelled. The `Notification` contains the `Request` associated with the `URLSessionTask`.
+    static let didCancelTaskNotification = Notification.Name(rawValue: "org.alamofire.notification.name.request.didCancelTask")
+    /// Posted when a `URLSessionTask` is completed. The `Notification` contains the `Request` associated with the `URLSessionTask`.
+    static let didCompleteTaskNotification = Notification.Name(rawValue: "org.alamofire.notification.name.request.didCompleteTask")
+}
+
+// MARK: -
+
+extension Notification {
+    /// The `Request` contained by the instance's `userInfo`, `nil` otherwise.
+    public var request: Request? {
+        return userInfo?[String.requestKey] as? Request
+    }
+
+    /// Convenience initializer for a `Notification` containing a `Request` payload.
+    ///
+    /// - Parameters:
+    ///   - name:    The name of the notification.
+    ///   - request: The `Request` payload.
+    init(name: Notification.Name, request: Request) {
+        self.init(name: name, object: nil, userInfo: [String.requestKey: request])
+    }
+}
+
+extension NotificationCenter {
+    /// Convenience function for posting notifications with `Request` payloads.
+    ///
+    /// - Parameters:
+    ///   - name:    The name of the notification.
+    ///   - request: The `Request` payload.
+    func postNotification(named name: Notification.Name, with request: Request) {
+        let notification = Notification(name: name, request: request)
+        post(notification)
+    }
+}
+
+extension String {
+    /// User info dictionary key representing the `Request` associated with the notification.
+    fileprivate static let requestKey = "org.alamofire.notification.key.request"
+}
+
+/// `EventMonitor` that provides Alamofire's notifications.
+public final class AlamofireNotifications: EventMonitor {
+    public func requestDidResume(_ request: Request) {
+        NotificationCenter.default.postNotification(named: Request.didResumeNotification, with: request)
+    }
+
+    public func requestDidSuspend(_ request: Request) {
+        NotificationCenter.default.postNotification(named: Request.didSuspendNotification, with: request)
+    }
+
+    public func requestDidCancel(_ request: Request) {
+        NotificationCenter.default.postNotification(named: Request.didCancelNotification, with: request)
+    }
+
+    public func requestDidFinish(_ request: Request) {
+        NotificationCenter.default.postNotification(named: Request.didFinishNotification, with: request)
+    }
+
+    public func request(_ request: Request, didResumeTask task: URLSessionTask) {
+        NotificationCenter.default.postNotification(named: Request.didResumeTaskNotification, with: request)
+    }
+
+    public func request(_ request: Request, didSuspendTask task: URLSessionTask) {
+        NotificationCenter.default.postNotification(named: Request.didSuspendTaskNotification, with: request)
+    }
+
+    public func request(_ request: Request, didCancelTask task: URLSessionTask) {
+        NotificationCenter.default.postNotification(named: Request.didCancelTaskNotification, with: request)
+    }
+
+    public func request(_ request: Request, didCompleteTask task: URLSessionTask, with error: AFError?) {
+        NotificationCenter.default.postNotification(named: Request.didCompleteTaskNotification, with: request)
+    }
+}

trolley/Pods/Alamofire/Source/OperationQueue+Alamofire.swift

@@ -0,0 +1,49 @@
+//
+//  OperationQueue+Alamofire.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+extension OperationQueue {
+    /// Creates an instance using the provided parameters.
+    ///
+    /// - Parameters:
+    ///   - qualityOfService:            `QualityOfService` to be applied to the queue. `.default` by default.
+    ///   - maxConcurrentOperationCount: Maximum concurrent operations.
+    ///                                  `OperationQueue.defaultMaxConcurrentOperationCount` by default.
+    ///   - underlyingQueue: Underlying  `DispatchQueue`. `nil` by default.
+    ///   - name:                        Name for the queue. `nil` by default.
+    ///   - startSuspended:              Whether the queue starts suspended. `false` by default.
+    convenience init(qualityOfService: QualityOfService = .default,
+                     maxConcurrentOperationCount: Int = OperationQueue.defaultMaxConcurrentOperationCount,
+                     underlyingQueue: DispatchQueue? = nil,
+                     name: String? = nil,
+                     startSuspended: Bool = false) {
+        self.init()
+        self.qualityOfService = qualityOfService
+        self.maxConcurrentOperationCount = maxConcurrentOperationCount
+        self.underlyingQueue = underlyingQueue
+        self.name = name
+        isSuspended = startSuspended
+    }
+}

trolley/Pods/Alamofire/Source/ParameterEncoder.swift

@@ -0,0 +1,184 @@
+//
+//  ParameterEncoder.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// A type that can encode any `Encodable` type into a `URLRequest`.
+public protocol ParameterEncoder {
+    /// Encode the provided `Encodable` parameters into `request`.
+    ///
+    /// - Parameters:
+    ///   - parameters: The `Encodable` parameter value.
+    ///   - request:    The `URLRequest` into which to encode the parameters.
+    ///
+    /// - Returns:      A `URLRequest` with the result of the encoding.
+    /// - Throws:       An `Error` when encoding fails. For Alamofire provided encoders, this will be an instance of
+    ///                 `AFError.parameterEncoderFailed` with an associated `ParameterEncoderFailureReason`.
+    func encode<Parameters: Encodable>(_ parameters: Parameters?, into request: URLRequest) throws -> URLRequest
+}
+
+/// A `ParameterEncoder` that encodes types as JSON body data.
+///
+/// If no `Content-Type` header is already set on the provided `URLRequest`s, it's set to `application/json`.
+open class JSONParameterEncoder: ParameterEncoder {
+    /// Returns an encoder with default parameters.
+    public static var `default`: JSONParameterEncoder { return JSONParameterEncoder() }
+
+    /// Returns an encoder with `JSONEncoder.outputFormatting` set to `.prettyPrinted`.
+    public static var prettyPrinted: JSONParameterEncoder {
+        let encoder = JSONEncoder()
+        encoder.outputFormatting = .prettyPrinted
+
+        return JSONParameterEncoder(encoder: encoder)
+    }
+
+    /// Returns an encoder with `JSONEncoder.outputFormatting` set to `.sortedKeys`.
+    @available(macOS 10.13, iOS 11.0, tvOS 11.0, watchOS 4.0, *)
+    public static var sortedKeys: JSONParameterEncoder {
+        let encoder = JSONEncoder()
+        encoder.outputFormatting = .sortedKeys
+
+        return JSONParameterEncoder(encoder: encoder)
+    }
+
+    /// `JSONEncoder` used to encode parameters.
+    public let encoder: JSONEncoder
+
+    /// Creates an instance with the provided `JSONEncoder`.
+    ///
+    /// - Parameter encoder: The `JSONEncoder`. `JSONEncoder()` by default.
+    public init(encoder: JSONEncoder = JSONEncoder()) {
+        self.encoder = encoder
+    }
+
+    open func encode<Parameters: Encodable>(_ parameters: Parameters?,
+                                            into request: URLRequest) throws -> URLRequest {
+        guard let parameters = parameters else { return request }
+
+        var request = request
+
+        do {
+            let data = try encoder.encode(parameters)
+            request.httpBody = data
+            if request.headers["Content-Type"] == nil {
+                request.headers.update(.contentType("application/json"))
+            }
+        } catch {
+            throw AFError.parameterEncodingFailed(reason: .jsonEncodingFailed(error: error))
+        }
+
+        return request
+    }
+}
+
+/// A `ParameterEncoder` that encodes types as URL-encoded query strings to be set on the URL or as body data, depending
+/// on the `Destination` set.
+///
+/// If no `Content-Type` header is already set on the provided `URLRequest`s, it will be set to
+/// `application/x-www-form-urlencoded; charset=utf-8`.
+///
+/// Encoding behavior can be customized by passing an instance of `URLEncodedFormEncoder` to the initializer.
+open class URLEncodedFormParameterEncoder: ParameterEncoder {
+    /// Defines where the URL-encoded string should be set for each `URLRequest`.
+    public enum Destination {
+        /// Applies the encoded query string to any existing query string for `.get`, `.head`, and `.delete` request.
+        /// Sets it to the `httpBody` for all other methods.
+        case methodDependent
+        /// Applies the encoded query string to any existing query string from the `URLRequest`.
+        case queryString
+        /// Applies the encoded query string to the `httpBody` of the `URLRequest`.
+        case httpBody
+
+        /// Determines whether the URL-encoded string should be applied to the `URLRequest`'s `url`.
+        ///
+        /// - Parameter method: The `HTTPMethod`.
+        ///
+        /// - Returns:          Whether the URL-encoded string should be applied to a `URL`.
+        func encodesParametersInURL(for method: HTTPMethod) -> Bool {
+            switch self {
+            case .methodDependent: return [.get, .head, .delete].contains(method)
+            case .queryString: return true
+            case .httpBody: return false
+            }
+        }
+    }
+
+    /// Returns an encoder with default parameters.
+    public static var `default`: URLEncodedFormParameterEncoder { return URLEncodedFormParameterEncoder() }
+
+    /// The `URLEncodedFormEncoder` to use.
+    public let encoder: URLEncodedFormEncoder
+
+    /// The `Destination` for the URL-encoded string.
+    public let destination: Destination
+
+    /// Creates an instance with the provided `URLEncodedFormEncoder` instance and `Destination` value.
+    ///
+    /// - Parameters:
+    ///   - encoder:     The `URLEncodedFormEncoder`. `URLEncodedFormEncoder()` by default.
+    ///   - destination: The `Destination`. `.methodDependent` by default.
+    public init(encoder: URLEncodedFormEncoder = URLEncodedFormEncoder(), destination: Destination = .methodDependent) {
+        self.encoder = encoder
+        self.destination = destination
+    }
+
+    open func encode<Parameters: Encodable>(_ parameters: Parameters?,
+                                            into request: URLRequest) throws -> URLRequest {
+        guard let parameters = parameters else { return request }
+
+        var request = request
+
+        guard let url = request.url else {
+            throw AFError.parameterEncoderFailed(reason: .missingRequiredComponent(.url))
+        }
+
+        guard let method = request.method else {
+            let rawValue = request.method?.rawValue ?? "nil"
+            throw AFError.parameterEncoderFailed(reason: .missingRequiredComponent(.httpMethod(rawValue: rawValue)))
+        }
+
+        if destination.encodesParametersInURL(for: method),
+            var components = URLComponents(url: url, resolvingAgainstBaseURL: false) {
+            let query: String = try Result<String, Error> { try encoder.encode(parameters) }
+                .mapError { AFError.parameterEncoderFailed(reason: .encoderFailed(error: $0)) }.get()
+            let newQueryString = [components.percentEncodedQuery, query].compactMap { $0 }.joinedWithAmpersands()
+            components.percentEncodedQuery = newQueryString.isEmpty ? nil : newQueryString
+
+            guard let newURL = components.url else {
+                throw AFError.parameterEncoderFailed(reason: .missingRequiredComponent(.url))
+            }
+
+            request.url = newURL
+        } else {
+            if request.headers["Content-Type"] == nil {
+                request.headers.update(.contentType("application/x-www-form-urlencoded; charset=utf-8"))
+            }
+
+            request.httpBody = try Result<Data, Error> { try encoder.encode(parameters) }
+                .mapError { AFError.parameterEncoderFailed(reason: .encoderFailed(error: $0)) }.get()
+        }
+
+        return request
+    }
+}

trolley/Pods/Alamofire/Source/ParameterEncoding.swift

@@ -0,0 +1,314 @@
+//
+//  ParameterEncoding.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// A dictionary of parameters to apply to a `URLRequest`.
+public typealias Parameters = [String: Any]
+
+/// A type used to define how a set of parameters are applied to a `URLRequest`.
+public protocol ParameterEncoding {
+    /// Creates a `URLRequest` by encoding parameters and applying them on the passed request.
+    ///
+    /// - Parameters:
+    ///   - urlRequest: `URLRequestConvertible` value onto which parameters will be encoded.
+    ///   - parameters: `Parameters` to encode onto the request.
+    ///
+    /// - Returns:      The encoded `URLRequest`.
+    /// - Throws:       Any `Error` produced during parameter encoding.
+    func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest
+}
+
+// MARK: -
+
+/// Creates a url-encoded query string to be set as or appended to any existing URL query string or set as the HTTP
+/// body of the URL request. Whether the query string is set or appended to any existing URL query string or set as
+/// the HTTP body depends on the destination of the encoding.
+///
+/// The `Content-Type` HTTP header field of an encoded request with HTTP body is set to
+/// `application/x-www-form-urlencoded; charset=utf-8`.
+///
+/// There is no published specification for how to encode collection types. By default the convention of appending
+/// `[]` to the key for array values (`foo[]=1&foo[]=2`), and appending the key surrounded by square brackets for
+/// nested dictionary values (`foo[bar]=baz`) is used. Optionally, `ArrayEncoding` can be used to omit the
+/// square brackets appended to array keys.
+///
+/// `BoolEncoding` can be used to configure how boolean values are encoded. The default behavior is to encode
+/// `true` as 1 and `false` as 0.
+public struct URLEncoding: ParameterEncoding {
+    // MARK: Helper Types
+
+    /// Defines whether the url-encoded query string is applied to the existing query string or HTTP body of the
+    /// resulting URL request.
+    public enum Destination {
+        /// Applies encoded query string result to existing query string for `GET`, `HEAD` and `DELETE` requests and
+        /// sets as the HTTP body for requests with any other HTTP method.
+        case methodDependent
+        /// Sets or appends encoded query string result to existing query string.
+        case queryString
+        /// Sets encoded query string result as the HTTP body of the URL request.
+        case httpBody
+
+        func encodesParametersInURL(for method: HTTPMethod) -> Bool {
+            switch self {
+            case .methodDependent: return [.get, .head, .delete].contains(method)
+            case .queryString: return true
+            case .httpBody: return false
+            }
+        }
+    }
+
+    /// Configures how `Array` parameters are encoded.
+    public enum ArrayEncoding {
+        /// An empty set of square brackets is appended to the key for every value. This is the default behavior.
+        case brackets
+        /// No brackets are appended. The key is encoded as is.
+        case noBrackets
+
+        func encode(key: String) -> String {
+            switch self {
+            case .brackets:
+                return "\(key)[]"
+            case .noBrackets:
+                return key
+            }
+        }
+    }
+
+    /// Configures how `Bool` parameters are encoded.
+    public enum BoolEncoding {
+        /// Encode `true` as `1` and `false` as `0`. This is the default behavior.
+        case numeric
+        /// Encode `true` and `false` as string literals.
+        case literal
+
+        func encode(value: Bool) -> String {
+            switch self {
+            case .numeric:
+                return value ? "1" : "0"
+            case .literal:
+                return value ? "true" : "false"
+            }
+        }
+    }
+
+    // MARK: Properties
+
+    /// Returns a default `URLEncoding` instance with a `.methodDependent` destination.
+    public static var `default`: URLEncoding { return URLEncoding() }
+
+    /// Returns a `URLEncoding` instance with a `.queryString` destination.
+    public static var queryString: URLEncoding { return URLEncoding(destination: .queryString) }
+
+    /// Returns a `URLEncoding` instance with an `.httpBody` destination.
+    public static var httpBody: URLEncoding { return URLEncoding(destination: .httpBody) }
+
+    /// The destination defining where the encoded query string is to be applied to the URL request.
+    public let destination: Destination
+
+    /// The encoding to use for `Array` parameters.
+    public let arrayEncoding: ArrayEncoding
+
+    /// The encoding to use for `Bool` parameters.
+    public let boolEncoding: BoolEncoding
+
+    // MARK: Initialization
+
+    /// Creates an instance using the specified parameters.
+    ///
+    /// - Parameters:
+    ///   - destination:   `Destination` defining where the encoded query string will be applied. `.methodDependent` by
+    ///                    default.
+    ///   - arrayEncoding: `ArrayEncoding` to use. `.brackets` by default.
+    ///   - boolEncoding:  `BoolEncoding` to use. `.numeric` by default.
+    public init(destination: Destination = .methodDependent,
+                arrayEncoding: ArrayEncoding = .brackets,
+                boolEncoding: BoolEncoding = .numeric) {
+        self.destination = destination
+        self.arrayEncoding = arrayEncoding
+        self.boolEncoding = boolEncoding
+    }
+
+    // MARK: Encoding
+
+    public func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
+        var urlRequest = try urlRequest.asURLRequest()
+
+        guard let parameters = parameters else { return urlRequest }
+
+        if let method = urlRequest.method, destination.encodesParametersInURL(for: method) {
+            guard let url = urlRequest.url else {
+                throw AFError.parameterEncodingFailed(reason: .missingURL)
+            }
+
+            if var urlComponents = URLComponents(url: url, resolvingAgainstBaseURL: false), !parameters.isEmpty {
+                let percentEncodedQuery = (urlComponents.percentEncodedQuery.map { $0 + "&" } ?? "") + query(parameters)
+                urlComponents.percentEncodedQuery = percentEncodedQuery
+                urlRequest.url = urlComponents.url
+            }
+        } else {
+            if urlRequest.value(forHTTPHeaderField: "Content-Type") == nil {
+                urlRequest.setValue("application/x-www-form-urlencoded; charset=utf-8", forHTTPHeaderField: "Content-Type")
+            }
+
+            urlRequest.httpBody = Data(query(parameters).utf8)
+        }
+
+        return urlRequest
+    }
+
+    /// Creates a percent-escaped, URL encoded query string components from the given key-value pair recursively.
+    ///
+    /// - Parameters:
+    ///   - key:   Key of the query component.
+    ///   - value: Value of the query component.
+    ///
+    /// - Returns: The percent-escaped, URL encoded query string components.
+    public func queryComponents(fromKey key: String, value: Any) -> [(String, String)] {
+        var components: [(String, String)] = []
+
+        if let dictionary = value as? [String: Any] {
+            for (nestedKey, value) in dictionary {
+                components += queryComponents(fromKey: "\(key)[\(nestedKey)]", value: value)
+            }
+        } else if let array = value as? [Any] {
+            for value in array {
+                components += queryComponents(fromKey: arrayEncoding.encode(key: key), value: value)
+            }
+        } else if let value = value as? NSNumber {
+            if value.isBool {
+                components.append((escape(key), escape(boolEncoding.encode(value: value.boolValue))))
+            } else {
+                components.append((escape(key), escape("\(value)")))
+            }
+        } else if let bool = value as? Bool {
+            components.append((escape(key), escape(boolEncoding.encode(value: bool))))
+        } else {
+            components.append((escape(key), escape("\(value)")))
+        }
+
+        return components
+    }
+
+    /// Creates a percent-escaped string following RFC 3986 for a query string key or value.
+    ///
+    /// - Parameter string: `String` to be percent-escaped.
+    ///
+    /// - Returns:          The percent-escaped `String`.
+    public func escape(_ string: String) -> String {
+        return string.addingPercentEncoding(withAllowedCharacters: .afURLQueryAllowed) ?? string
+    }
+
+    private func query(_ parameters: [String: Any]) -> String {
+        var components: [(String, String)] = []
+
+        for key in parameters.keys.sorted(by: <) {
+            let value = parameters[key]!
+            components += queryComponents(fromKey: key, value: value)
+        }
+        return components.map { "\($0)=\($1)" }.joined(separator: "&")
+    }
+}
+
+// MARK: -
+
+/// Uses `JSONSerialization` to create a JSON representation of the parameters object, which is set as the body of the
+/// request. The `Content-Type` HTTP header field of an encoded request is set to `application/json`.
+public struct JSONEncoding: ParameterEncoding {
+    // MARK: Properties
+
+    /// Returns a `JSONEncoding` instance with default writing options.
+    public static var `default`: JSONEncoding { return JSONEncoding() }
+
+    /// Returns a `JSONEncoding` instance with `.prettyPrinted` writing options.
+    public static var prettyPrinted: JSONEncoding { return JSONEncoding(options: .prettyPrinted) }
+
+    /// The options for writing the parameters as JSON data.
+    public let options: JSONSerialization.WritingOptions
+
+    // MARK: Initialization
+
+    /// Creates an instance using the specified `WritingOptions`.
+    ///
+    /// - Parameter options: `JSONSerialization.WritingOptions` to use.
+    public init(options: JSONSerialization.WritingOptions = []) {
+        self.options = options
+    }
+
+    // MARK: Encoding
+
+    public func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
+        var urlRequest = try urlRequest.asURLRequest()
+
+        guard let parameters = parameters else { return urlRequest }
+
+        do {
+            let data = try JSONSerialization.data(withJSONObject: parameters, options: options)
+
+            if urlRequest.value(forHTTPHeaderField: "Content-Type") == nil {
+                urlRequest.setValue("application/json", forHTTPHeaderField: "Content-Type")
+            }
+
+            urlRequest.httpBody = data
+        } catch {
+            throw AFError.parameterEncodingFailed(reason: .jsonEncodingFailed(error: error))
+        }
+
+        return urlRequest
+    }
+
+    /// Encodes any JSON compatible object into a `URLRequest`.
+    ///
+    /// - Parameters:
+    ///   - urlRequest: `URLRequestConvertible` value into which the object will be encoded.
+    ///   - jsonObject: `Any` value (must be JSON compatible` to be encoded into the `URLRequest`. `nil` by default.
+    ///
+    /// - Returns:      The encoded `URLRequest`.
+    /// - Throws:       Any `Error` produced during encoding.
+    public func encode(_ urlRequest: URLRequestConvertible, withJSONObject jsonObject: Any? = nil) throws -> URLRequest {
+        var urlRequest = try urlRequest.asURLRequest()
+
+        guard let jsonObject = jsonObject else { return urlRequest }
+
+        do {
+            let data = try JSONSerialization.data(withJSONObject: jsonObject, options: options)
+
+            if urlRequest.value(forHTTPHeaderField: "Content-Type") == nil {
+                urlRequest.setValue("application/json", forHTTPHeaderField: "Content-Type")
+            }
+
+            urlRequest.httpBody = data
+        } catch {
+            throw AFError.parameterEncodingFailed(reason: .jsonEncodingFailed(error: error))
+        }
+
+        return urlRequest
+    }
+}
+
+// MARK: -
+
+extension NSNumber {
+    fileprivate var isBool: Bool { return CFBooleanGetTypeID() == CFGetTypeID(self) }
+}

trolley/Pods/Alamofire/Source/Protector.swift

@@ -0,0 +1,167 @@
+//
+//  Protector.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+// MARK: -
+
+/// An `os_unfair_lock` wrapper.
+final class UnfairLock {
+    private let unfairLock: os_unfair_lock_t
+
+    init() {
+        unfairLock = .allocate(capacity: 1)
+        unfairLock.initialize(to: os_unfair_lock())
+    }
+
+    deinit {
+        unfairLock.deinitialize(count: 1)
+        unfairLock.deallocate()
+    }
+
+    private func lock() {
+        os_unfair_lock_lock(unfairLock)
+    }
+
+    private func unlock() {
+        os_unfair_lock_unlock(unfairLock)
+    }
+
+    /// Executes a closure returning a value while acquiring the lock.
+    ///
+    /// - Parameter closure: The closure to run.
+    ///
+    /// - Returns:           The value the closure generated.
+    func around<T>(_ closure: () -> T) -> T {
+        lock(); defer { unlock() }
+        return closure()
+    }
+
+    /// Execute a closure while acquiring the lock.
+    ///
+    /// - Parameter closure: The closure to run.
+    func around(_ closure: () -> Void) {
+        lock(); defer { unlock() }
+        return closure()
+    }
+}
+
+/// A thread-safe wrapper around a value.
+final class Protector<T> {
+    private let lock = UnfairLock()
+    private var value: T
+
+    init(_ value: T) {
+        self.value = value
+    }
+
+    /// The contained value. Unsafe for anything more than direct read or write.
+    var directValue: T {
+        get { return lock.around { value } }
+        set { lock.around { value = newValue } }
+    }
+
+    /// Synchronously read or transform the contained value.
+    ///
+    /// - Parameter closure: The closure to execute.
+    ///
+    /// - Returns:           The return value of the closure passed.
+    func read<U>(_ closure: (T) -> U) -> U {
+        return lock.around { closure(self.value) }
+    }
+
+    /// Synchronously modify the protected value.
+    ///
+    /// - Parameter closure: The closure to execute.
+    ///
+    /// - Returns:           The modified value.
+    @discardableResult
+    func write<U>(_ closure: (inout T) -> U) -> U {
+        return lock.around { closure(&self.value) }
+    }
+}
+
+extension Protector where T: RangeReplaceableCollection {
+    /// Adds a new element to the end of this protected collection.
+    ///
+    /// - Parameter newElement: The `Element` to append.
+    func append(_ newElement: T.Element) {
+        write { (ward: inout T) in
+            ward.append(newElement)
+        }
+    }
+
+    /// Adds the elements of a sequence to the end of this protected collection.
+    ///
+    /// - Parameter newElements: The `Sequence` to append.
+    func append<S: Sequence>(contentsOf newElements: S) where S.Element == T.Element {
+        write { (ward: inout T) in
+            ward.append(contentsOf: newElements)
+        }
+    }
+
+    /// Add the elements of a collection to the end of the protected collection.
+    ///
+    /// - Parameter newElements: The `Collection` to append.
+    func append<C: Collection>(contentsOf newElements: C) where C.Element == T.Element {
+        write { (ward: inout T) in
+            ward.append(contentsOf: newElements)
+        }
+    }
+}
+
+extension Protector where T == Data? {
+    /// Adds the contents of a `Data` value to the end of the protected `Data`.
+    ///
+    /// - Parameter data: The `Data` to be appended.
+    func append(_ data: Data) {
+        write { (ward: inout T) in
+            ward?.append(data)
+        }
+    }
+}
+
+extension Protector where T == Request.MutableState {
+    /// Attempts to transition to the passed `State`.
+    ///
+    /// - Parameter state: The `State` to attempt transition to.
+    ///
+    /// - Returns:         Whether the transition occurred.
+    func attemptToTransitionTo(_ state: Request.State) -> Bool {
+        return lock.around {
+            guard value.state.canTransitionTo(state) else { return false }
+
+            value.state = state
+
+            return true
+        }
+    }
+
+    /// Perform a closure while locked with the provided `Request.State`.
+    ///
+    /// - Parameter perform: The closure to perform while locked.
+    func withState(perform: (Request.State) -> Void) {
+        lock.around { perform(value.state) }
+    }
+}

trolley/Pods/Alamofire/Source/RedirectHandler.swift

@@ -0,0 +1,95 @@
+//
+//  RedirectHandler.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// A type that handles how an HTTP redirect response from a remote server should be redirected to the new request.
+public protocol RedirectHandler {
+    /// Determines how the HTTP redirect response should be redirected to the new request.
+    ///
+    /// The `completion` closure should be passed one of three possible options:
+    ///
+    ///   1. The new request specified by the redirect (this is the most common use case).
+    ///   2. A modified version of the new request (you may want to route it somewhere else).
+    ///   3. A `nil` value to deny the redirect request and return the body of the redirect response.
+    ///
+    /// - Parameters:
+    ///   - task:       The task whose request resulted in a redirect.
+    ///   - request:    The URL request object to the new location specified by the redirect response.
+    ///   - response:   The response containing the server's response to the original request.
+    ///   - completion: The closure to execute containing the new request, a modified request, or `nil`.
+    func task(_ task: URLSessionTask,
+              willBeRedirectedTo request: URLRequest,
+              for response: HTTPURLResponse,
+              completion: @escaping (URLRequest?) -> Void)
+}
+
+// MARK: -
+
+/// `Redirector` is a convenience `RedirectHandler` making it easy to follow, not follow, or modify a redirect.
+public struct Redirector {
+    /// Defines the behavior of the `Redirector` type.
+    public enum Behavior {
+        /// Follow the redirect as defined in the response.
+        case follow
+        /// Do not follow the redirect defined in the response.
+        case doNotFollow
+        /// Modify the redirect request defined in the response.
+        case modify((URLSessionTask, URLRequest, HTTPURLResponse) -> URLRequest?)
+    }
+
+    /// Returns a `Redirector` with a `.follow` `Behavior`.
+    public static let follow = Redirector(behavior: .follow)
+    /// Returns a `Redirector` with a `.doNotFollow` `Behavior`.
+    public static let doNotFollow = Redirector(behavior: .doNotFollow)
+
+    /// The `Behavior` of the `Redirector`.
+    public let behavior: Behavior
+
+    /// Creates a `Redirector` instance from the `Behavior`.
+    ///
+    /// - Parameter behavior: The `Behavior`.
+    public init(behavior: Behavior) {
+        self.behavior = behavior
+    }
+}
+
+// MARK: -
+
+extension Redirector: RedirectHandler {
+    public func task(_ task: URLSessionTask,
+                     willBeRedirectedTo request: URLRequest,
+                     for response: HTTPURLResponse,
+                     completion: @escaping (URLRequest?) -> Void) {
+        switch behavior {
+        case .follow:
+            completion(request)
+        case .doNotFollow:
+            completion(nil)
+        case let .modify(closure):
+            let request = closure(task, request, response)
+            completion(request)
+        }
+    }
+}

trolley/Pods/Alamofire/Source/RequestInterceptor.swift

@@ -0,0 +1,243 @@
+//
+//  RequestInterceptor.swift
+//
+//  Copyright (c) 2019 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// A type that can inspect and optionally adapt a `URLRequest` in some manner if necessary.
+public protocol RequestAdapter {
+    /// Inspects and adapts the specified `URLRequest` in some manner and calls the completion handler with the Result.
+    ///
+    /// - Parameters:
+    ///   - urlRequest: The `URLRequest` to adapt.
+    ///   - session:    The `Session` that will execute the `URLRequest`.
+    ///   - completion: The completion handler that must be called when adaptation is complete.
+    func adapt(_ urlRequest: URLRequest, for session: Session, completion: @escaping (Result<URLRequest, Error>) -> Void)
+}
+
+// MARK: -
+
+/// Outcome of determination whether retry is necessary.
+public enum RetryResult {
+    /// Retry should be attempted immediately.
+    case retry
+    /// Retry should be attempted after the associated `TimeInterval`.
+    case retryWithDelay(TimeInterval)
+    /// Do not retry.
+    case doNotRetry
+    /// Do not retry due to the associated `AFError`.
+    case doNotRetryWithError(Error)
+}
+
+extension RetryResult {
+    var retryRequired: Bool {
+        switch self {
+        case .retry, .retryWithDelay: return true
+        default: return false
+        }
+    }
+
+    var delay: TimeInterval? {
+        switch self {
+        case let .retryWithDelay(delay): return delay
+        default: return nil
+        }
+    }
+
+    var error: Error? {
+        guard case let .doNotRetryWithError(error) = self else { return nil }
+        return error
+    }
+}
+
+/// A type that determines whether a request should be retried after being executed by the specified session manager
+/// and encountering an error.
+public protocol RequestRetrier {
+    /// Determines whether the `Request` should be retried by calling the `completion` closure.
+    ///
+    /// This operation is fully asynchronous. Any amount of time can be taken to determine whether the request needs
+    /// to be retried. The one requirement is that the completion closure is called to ensure the request is properly
+    /// cleaned up after.
+    ///
+    /// - Parameters:
+    ///   - request:    `Request` that failed due to the provided `Error`.
+    ///   - session:    `Session` that produced the `Request`.
+    ///   - error:      `Error` encountered while executing the `Request`.
+    ///   - completion: Completion closure to be executed when a retry decision has been determined.
+    func retry(_ request: Request, for session: Session, dueTo error: Error, completion: @escaping (RetryResult) -> Void)
+}
+
+// MARK: -
+
+/// Type that provides both `RequestAdapter` and `RequestRetrier` functionality.
+public protocol RequestInterceptor: RequestAdapter, RequestRetrier {}
+
+extension RequestInterceptor {
+    public func adapt(_ urlRequest: URLRequest, for session: Session, completion: @escaping (Result<URLRequest, Error>) -> Void) {
+        completion(.success(urlRequest))
+    }
+
+    public func retry(_ request: Request,
+                      for session: Session,
+                      dueTo error: Error,
+                      completion: @escaping (RetryResult) -> Void) {
+        completion(.doNotRetry)
+    }
+}
+
+/// `RequestAdapter` closure definition.
+public typealias AdaptHandler = (URLRequest, Session, _ completion: @escaping (Result<URLRequest, Error>) -> Void) -> Void
+/// `RequestRetrier` closure definition.
+public typealias RetryHandler = (Request, Session, Error, _ completion: @escaping (RetryResult) -> Void) -> Void
+
+// MARK: -
+
+/// Closure-based `RequestAdapter`.
+open class Adapter: RequestInterceptor {
+    private let adaptHandler: AdaptHandler
+
+    /// Creates an instance using the provided closure.
+    ///
+    /// - Parameter adaptHandler: `AdaptHandler` closure to be executed when handling request adaptation.
+    public init(_ adaptHandler: @escaping AdaptHandler) {
+        self.adaptHandler = adaptHandler
+    }
+
+    open func adapt(_ urlRequest: URLRequest, for session: Session, completion: @escaping (Result<URLRequest, Error>) -> Void) {
+        adaptHandler(urlRequest, session, completion)
+    }
+}
+
+// MARK: -
+
+/// Closure-based `RequestRetrier`.
+open class Retrier: RequestInterceptor {
+    private let retryHandler: RetryHandler
+
+    /// Creates an instance using the provided closure.
+    ///
+    /// - Parameter retryHandler: `RetryHandler` closure to be executed when handling request retry.
+    public init(_ retryHandler: @escaping RetryHandler) {
+        self.retryHandler = retryHandler
+    }
+
+    open func retry(_ request: Request,
+                    for session: Session,
+                    dueTo error: Error,
+                    completion: @escaping (RetryResult) -> Void) {
+        retryHandler(request, session, error, completion)
+    }
+}
+
+// MARK: -
+
+/// `RequestInterceptor` which can use multiple `RequestAdapter` and `RequestRetrier` values.
+open class Interceptor: RequestInterceptor {
+    /// All `RequestAdapter`s associated with the instance. These adapters will be run until one fails.
+    public let adapters: [RequestAdapter]
+    /// All `RequestRetrier`s associated with the instance. These retriers will be run one at a time until one triggers retry.
+    public let retriers: [RequestRetrier]
+
+    /// Creates an instance from `AdaptHandler` and `RetryHandler` closures.
+    ///
+    /// - Parameters:
+    ///   - adaptHandler: `AdaptHandler` closure to be used.
+    ///   - retryHandler: `RetryHandler` closure to be used.
+    public init(adaptHandler: @escaping AdaptHandler, retryHandler: @escaping RetryHandler) {
+        adapters = [Adapter(adaptHandler)]
+        retriers = [Retrier(retryHandler)]
+    }
+
+    /// Creates an instance from `RequestAdapter` and `RequestRetrier` values.
+    ///
+    /// - Parameters:
+    ///   - adapter: `RequestAdapter` value to be used.
+    ///   - retrier: `RequestRetrier` value to be used.
+    public init(adapter: RequestAdapter, retrier: RequestRetrier) {
+        adapters = [adapter]
+        retriers = [retrier]
+    }
+
+    /// Creates an instance from the arrays of `RequestAdapter` and `RequestRetrier` values.
+    ///
+    /// - Parameters:
+    ///   - adapters: `RequestAdapter` values to be used.
+    ///   - retriers: `RequestRetrier` values to be used.
+    public init(adapters: [RequestAdapter] = [], retriers: [RequestRetrier] = []) {
+        self.adapters = adapters
+        self.retriers = retriers
+    }
+
+    open func adapt(_ urlRequest: URLRequest, for session: Session, completion: @escaping (Result<URLRequest, Error>) -> Void) {
+        adapt(urlRequest, for: session, using: adapters, completion: completion)
+    }
+
+    private func adapt(_ urlRequest: URLRequest,
+                       for session: Session,
+                       using adapters: [RequestAdapter],
+                       completion: @escaping (Result<URLRequest, Error>) -> Void) {
+        var pendingAdapters = adapters
+
+        guard !pendingAdapters.isEmpty else { completion(.success(urlRequest)); return }
+
+        let adapter = pendingAdapters.removeFirst()
+
+        adapter.adapt(urlRequest, for: session) { result in
+            switch result {
+            case let .success(urlRequest):
+                self.adapt(urlRequest, for: session, using: pendingAdapters, completion: completion)
+            case .failure:
+                completion(result)
+            }
+        }
+    }
+
+    open func retry(_ request: Request,
+                    for session: Session,
+                    dueTo error: Error,
+                    completion: @escaping (RetryResult) -> Void) {
+        retry(request, for: session, dueTo: error, using: retriers, completion: completion)
+    }
+
+    private func retry(_ request: Request,
+                       for session: Session,
+                       dueTo error: Error,
+                       using retriers: [RequestRetrier],
+                       completion: @escaping (RetryResult) -> Void) {
+        var pendingRetriers = retriers
+
+        guard !pendingRetriers.isEmpty else { completion(.doNotRetry); return }
+
+        let retrier = pendingRetriers.removeFirst()
+
+        retrier.retry(request, for: session, dueTo: error) { result in
+            switch result {
+            case .retry, .retryWithDelay, .doNotRetryWithError:
+                completion(result)
+            case .doNotRetry:
+                // Only continue to the next retrier if retry was not triggered and no error was encountered
+                self.retry(request, for: session, dueTo: error, using: pendingRetriers, completion: completion)
+            }
+        }
+    }
+}

trolley/Pods/Alamofire/Source/RequestTaskMap.swift

@@ -0,0 +1,136 @@
+//
+//  RequestTaskMap.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// A type that maintains a two way, one to one map of `URLSessionTask`s to `Request`s.
+struct RequestTaskMap {
+    private var tasksToRequests: [URLSessionTask: Request]
+    private var requestsToTasks: [Request: URLSessionTask]
+    private var taskEvents: [URLSessionTask: (completed: Bool, metricsGathered: Bool)]
+
+    var requests: [Request] {
+        return Array(tasksToRequests.values)
+    }
+
+    init(tasksToRequests: [URLSessionTask: Request] = [:],
+         requestsToTasks: [Request: URLSessionTask] = [:],
+         taskEvents: [URLSessionTask: (completed: Bool, metricsGathered: Bool)] = [:]) {
+        self.tasksToRequests = tasksToRequests
+        self.requestsToTasks = requestsToTasks
+        self.taskEvents = taskEvents
+    }
+
+    subscript(_ request: Request) -> URLSessionTask? {
+        get { return requestsToTasks[request] }
+        set {
+            guard let newValue = newValue else {
+                guard let task = requestsToTasks[request] else {
+                    fatalError("RequestTaskMap consistency error: no task corresponding to request found.")
+                }
+
+                requestsToTasks.removeValue(forKey: request)
+                tasksToRequests.removeValue(forKey: task)
+                taskEvents.removeValue(forKey: task)
+
+                return
+            }
+
+            requestsToTasks[request] = newValue
+            tasksToRequests[newValue] = request
+            taskEvents[newValue] = (completed: false, metricsGathered: false)
+        }
+    }
+
+    subscript(_ task: URLSessionTask) -> Request? {
+        get { return tasksToRequests[task] }
+        set {
+            guard let newValue = newValue else {
+                guard let request = tasksToRequests[task] else {
+                    fatalError("RequestTaskMap consistency error: no request corresponding to task found.")
+                }
+
+                tasksToRequests.removeValue(forKey: task)
+                requestsToTasks.removeValue(forKey: request)
+                taskEvents.removeValue(forKey: task)
+
+                return
+            }
+
+            tasksToRequests[task] = newValue
+            requestsToTasks[newValue] = task
+            taskEvents[task] = (completed: false, metricsGathered: false)
+        }
+    }
+
+    var count: Int {
+        precondition(tasksToRequests.count == requestsToTasks.count,
+                     "RequestTaskMap.count invalid, requests.count: \(tasksToRequests.count) != tasks.count: \(requestsToTasks.count)")
+
+        return tasksToRequests.count
+    }
+
+    var eventCount: Int {
+        precondition(taskEvents.count == count, "RequestTaskMap.eventCount invalid, count: \(count) != taskEvents.count: \(taskEvents.count)")
+
+        return taskEvents.count
+    }
+
+    var isEmpty: Bool {
+        precondition(tasksToRequests.isEmpty == requestsToTasks.isEmpty,
+                     "RequestTaskMap.isEmpty invalid, requests.isEmpty: \(tasksToRequests.isEmpty) != tasks.isEmpty: \(requestsToTasks.isEmpty)")
+
+        return tasksToRequests.isEmpty
+    }
+
+    var isEventsEmpty: Bool {
+        precondition(taskEvents.isEmpty == isEmpty, "RequestTaskMap.isEventsEmpty invalid, isEmpty: \(isEmpty) != taskEvents.isEmpty: \(taskEvents.isEmpty)")
+
+        return taskEvents.isEmpty
+    }
+
+    mutating func disassociateIfNecessaryAfterGatheringMetricsForTask(_ task: URLSessionTask) {
+        guard let events = taskEvents[task] else {
+            fatalError("RequestTaskMap consistency error: no events corresponding to task found.")
+        }
+
+        switch (events.completed, events.metricsGathered) {
+        case (_, true): fatalError("RequestTaskMap consistency error: duplicate metricsGatheredForTask call.")
+        case (false, false): taskEvents[task] = (completed: false, metricsGathered: true)
+        case (true, false): self[task] = nil
+        }
+    }
+
+    mutating func disassociateIfNecessaryAfterCompletingTask(_ task: URLSessionTask) {
+        guard let events = taskEvents[task] else {
+            fatalError("RequestTaskMap consistency error: no events corresponding to task found.")
+        }
+
+        switch (events.completed, events.metricsGathered) {
+        case (true, _): fatalError("RequestTaskMap consistency error: duplicate completionReceivedForTask call.")
+        case (false, false): taskEvents[task] = (completed: true, metricsGathered: false)
+        case (false, true): self[task] = nil
+        }
+    }
+}

trolley/Pods/Alamofire/Source/Response.swift

@@ -0,0 +1,399 @@
+//
+//  Response.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// Default type of `DataResponse` returned by Alamofire, with an `AFError` `Failure` type.
+public typealias AFDataResponse<Success> = DataResponse<Success, AFError>
+/// Default type of `DownloadResponse` returned by Alamofire, with an `AFError` `Failure` type.
+public typealias AFDownloadResponse<Success> = DownloadResponse<Success, AFError>
+
+/// Type used to store all values associated with a serialized response of a `DataRequest` or `UploadRequest`.
+public struct DataResponse<Success, Failure: Error> {
+    /// The URL request sent to the server.
+    public let request: URLRequest?
+
+    /// The server's response to the URL request.
+    public let response: HTTPURLResponse?
+
+    /// The data returned by the server.
+    public let data: Data?
+
+    /// The final metrics of the response.
+    public let metrics: URLSessionTaskMetrics?
+
+    /// The time taken to serialize the response.
+    public let serializationDuration: TimeInterval
+
+    /// The result of response serialization.
+    public let result: Result<Success, Failure>
+
+    /// Returns the associated value of the result if it is a success, `nil` otherwise.
+    public var value: Success? { return result.success }
+
+    /// Returns the associated error value if the result if it is a failure, `nil` otherwise.
+    public var error: Failure? { return result.failure }
+
+    /// Creates a `DataResponse` instance with the specified parameters derived from the response serialization.
+    ///
+    /// - Parameters:
+    ///   - request:               The `URLRequest` sent to the server.
+    ///   - response:              The `HTTPURLResponse` from the server.
+    ///   - data:                  The `Data` returned by the server.
+    ///   - metrics:               The `URLSessionTaskMetrics` of the `DataRequest` or `UploadRequest`.
+    ///   - serializationDuration: The duration taken by serialization.
+    ///   - result:                The `Result` of response serialization.
+    public init(request: URLRequest?,
+                response: HTTPURLResponse?,
+                data: Data?,
+                metrics: URLSessionTaskMetrics?,
+                serializationDuration: TimeInterval,
+                result: Result<Success, Failure>) {
+        self.request = request
+        self.response = response
+        self.data = data
+        self.metrics = metrics
+        self.serializationDuration = serializationDuration
+        self.result = result
+    }
+}
+
+// MARK: -
+
+extension DataResponse: CustomStringConvertible, CustomDebugStringConvertible {
+    /// The textual representation used when written to an output stream, which includes whether the result was a
+    /// success or failure.
+    public var description: String {
+        return "\(result)"
+    }
+
+    /// The debug textual representation used when written to an output stream, which includes the URL request, the URL
+    /// response, the server data, the duration of the network and serialization actions, and the response serialization
+    /// result.
+    public var debugDescription: String {
+        let requestDescription = request.map { "\($0.httpMethod!) \($0)" } ?? "nil"
+        let requestBody = request?.httpBody.map { String(decoding: $0, as: UTF8.self) } ?? "None"
+        let responseDescription = response.map { response in
+            let sortedHeaders = response.headers.sorted()
+
+            return """
+            [Status Code]: \(response.statusCode)
+            [Headers]:
+            \(sortedHeaders)
+            """
+        } ?? "nil"
+        let responseBody = data.map { String(decoding: $0, as: UTF8.self) } ?? "None"
+        let metricsDescription = metrics.map { "\($0.taskInterval.duration)s" } ?? "None"
+
+        return """
+        [Request]: \(requestDescription)
+        [Request Body]: \n\(requestBody)
+        [Response]: \n\(responseDescription)
+        [Response Body]: \n\(responseBody)
+        [Data]: \(data?.description ?? "None")
+        [Network Duration]: \(metricsDescription)
+        [Serialization Duration]: \(serializationDuration)s
+        [Result]: \(result)
+        """
+    }
+}
+
+// MARK: -
+
+extension DataResponse {
+    /// Evaluates the specified closure when the result of this `DataResponse` is a success, passing the unwrapped
+    /// result value as a parameter.
+    ///
+    /// Use the `map` method with a closure that does not throw. For example:
+    ///
+    ///     let possibleData: DataResponse<Data> = ...
+    ///     let possibleInt = possibleData.map { $0.count }
+    ///
+    /// - parameter transform: A closure that takes the success value of the instance's result.
+    ///
+    /// - returns: A `DataResponse` whose result wraps the value returned by the given closure. If this instance's
+    ///            result is a failure, returns a response wrapping the same failure.
+    public func map<NewSuccess>(_ transform: (Success) -> NewSuccess) -> DataResponse<NewSuccess, Failure> {
+        return DataResponse<NewSuccess, Failure>(request: request,
+                                                 response: response,
+                                                 data: data,
+                                                 metrics: metrics,
+                                                 serializationDuration: serializationDuration,
+                                                 result: result.map(transform))
+    }
+
+    /// Evaluates the given closure when the result of this `DataResponse` is a success, passing the unwrapped result
+    /// value as a parameter.
+    ///
+    /// Use the `tryMap` method with a closure that may throw an error. For example:
+    ///
+    ///     let possibleData: DataResponse<Data> = ...
+    ///     let possibleObject = possibleData.tryMap {
+    ///         try JSONSerialization.jsonObject(with: $0)
+    ///     }
+    ///
+    /// - parameter transform: A closure that takes the success value of the instance's result.
+    ///
+    /// - returns: A success or failure `DataResponse` depending on the result of the given closure. If this instance's
+    ///            result is a failure, returns the same failure.
+    public func tryMap<NewSuccess>(_ transform: (Success) throws -> NewSuccess) -> DataResponse<NewSuccess, Error> {
+        return DataResponse<NewSuccess, Error>(request: request,
+                                               response: response,
+                                               data: data,
+                                               metrics: metrics,
+                                               serializationDuration: serializationDuration,
+                                               result: result.tryMap(transform))
+    }
+
+    /// Evaluates the specified closure when the `DataResponse` is a failure, passing the unwrapped error as a parameter.
+    ///
+    /// Use the `mapError` function with a closure that does not throw. For example:
+    ///
+    ///     let possibleData: DataResponse<Data> = ...
+    ///     let withMyError = possibleData.mapError { MyError.error($0) }
+    ///
+    /// - Parameter transform: A closure that takes the error of the instance.
+    ///
+    /// - Returns: A `DataResponse` instance containing the result of the transform.
+    public func mapError<NewFailure: Error>(_ transform: (Failure) -> NewFailure) -> DataResponse<Success, NewFailure> {
+        return DataResponse<Success, NewFailure>(request: request,
+                                                 response: response,
+                                                 data: data,
+                                                 metrics: metrics,
+                                                 serializationDuration: serializationDuration,
+                                                 result: result.mapError(transform))
+    }
+
+    /// Evaluates the specified closure when the `DataResponse` is a failure, passing the unwrapped error as a parameter.
+    ///
+    /// Use the `tryMapError` function with a closure that may throw an error. For example:
+    ///
+    ///     let possibleData: DataResponse<Data> = ...
+    ///     let possibleObject = possibleData.tryMapError {
+    ///         try someFailableFunction(taking: $0)
+    ///     }
+    ///
+    /// - Parameter transform: A throwing closure that takes the error of the instance.
+    ///
+    /// - Returns: A `DataResponse` instance containing the result of the transform.
+    public func tryMapError<NewFailure: Error>(_ transform: (Failure) throws -> NewFailure) -> DataResponse<Success, Error> {
+        return DataResponse<Success, Error>(request: request,
+                                            response: response,
+                                            data: data,
+                                            metrics: metrics,
+                                            serializationDuration: serializationDuration,
+                                            result: result.tryMapError(transform))
+    }
+}
+
+// MARK: -
+
+/// Used to store all data associated with a serialized response of a download request.
+public struct DownloadResponse<Success, Failure: Error> {
+    /// The URL request sent to the server.
+    public let request: URLRequest?
+
+    /// The server's response to the URL request.
+    public let response: HTTPURLResponse?
+
+    /// The final destination URL of the data returned from the server after it is moved.
+    public let fileURL: URL?
+
+    /// The resume data generated if the request was cancelled.
+    public let resumeData: Data?
+
+    /// The final metrics of the response.
+    public let metrics: URLSessionTaskMetrics?
+
+    /// The time taken to serialize the response.
+    public let serializationDuration: TimeInterval
+
+    /// The result of response serialization.
+    public let result: Result<Success, Failure>
+
+    /// Returns the associated value of the result if it is a success, `nil` otherwise.
+    public var value: Success? { return result.success }
+
+    /// Returns the associated error value if the result if it is a failure, `nil` otherwise.
+    public var error: Failure? { return result.failure }
+
+    /// Creates a `DownloadResponse` instance with the specified parameters derived from response serialization.
+    ///
+    /// - Parameters:
+    ///   - request:               The `URLRequest` sent to the server.
+    ///   - response:              The `HTTPURLResponse` from the server.
+    ///   - temporaryURL:          The temporary destination `URL` of the data returned from the server.
+    ///   - destinationURL:        The final destination `URL` of the data returned from the server, if it was moved.
+    ///   - resumeData:            The resume `Data` generated if the request was cancelled.
+    ///   - metrics:               The `URLSessionTaskMetrics` of the `DownloadRequest`.
+    ///   - serializationDuration: The duration taken by serialization.
+    ///   - result:                The `Result` of response serialization.
+    public init(request: URLRequest?,
+                response: HTTPURLResponse?,
+                fileURL: URL?,
+                resumeData: Data?,
+                metrics: URLSessionTaskMetrics?,
+                serializationDuration: TimeInterval,
+                result: Result<Success, Failure>) {
+        self.request = request
+        self.response = response
+        self.fileURL = fileURL
+        self.resumeData = resumeData
+        self.metrics = metrics
+        self.serializationDuration = serializationDuration
+        self.result = result
+    }
+}
+
+// MARK: -
+
+extension DownloadResponse: CustomStringConvertible, CustomDebugStringConvertible {
+    /// The textual representation used when written to an output stream, which includes whether the result was a
+    /// success or failure.
+    public var description: String {
+        return "\(result)"
+    }
+
+    /// The debug textual representation used when written to an output stream, which includes the URL request, the URL
+    /// response, the temporary and destination URLs, the resume data, the durations of the network and serialization
+    /// actions, and the response serialization result.
+    public var debugDescription: String {
+        let requestDescription = request.map { "\($0.httpMethod!) \($0)" } ?? "nil"
+        let requestBody = request?.httpBody.map { String(decoding: $0, as: UTF8.self) } ?? "None"
+        let responseDescription = response.map { response in
+            let sortedHeaders = response.headers.sorted()
+
+            return """
+            [Status Code]: \(response.statusCode)
+            [Headers]:
+            \(sortedHeaders)
+            """
+        } ?? "nil"
+        let metricsDescription = metrics.map { "\($0.taskInterval.duration)s" } ?? "None"
+        let resumeDataDescription = resumeData.map { "\($0)" } ?? "None"
+
+        return """
+        [Request]: \(requestDescription)
+        [Request Body]: \n\(requestBody)
+        [Response]: \n\(responseDescription)
+        [File URL]: \(fileURL?.path ?? "nil")
+        [ResumeData]: \(resumeDataDescription)
+        [Network Duration]: \(metricsDescription)
+        [Serialization Duration]: \(serializationDuration)s
+        [Result]: \(result)
+        """
+    }
+}
+
+// MARK: -
+
+extension DownloadResponse {
+    /// Evaluates the given closure when the result of this `DownloadResponse` is a success, passing the unwrapped
+    /// result value as a parameter.
+    ///
+    /// Use the `map` method with a closure that does not throw. For example:
+    ///
+    ///     let possibleData: DownloadResponse<Data> = ...
+    ///     let possibleInt = possibleData.map { $0.count }
+    ///
+    /// - parameter transform: A closure that takes the success value of the instance's result.
+    ///
+    /// - returns: A `DownloadResponse` whose result wraps the value returned by the given closure. If this instance's
+    ///            result is a failure, returns a response wrapping the same failure.
+    public func map<NewSuccess>(_ transform: (Success) -> NewSuccess) -> DownloadResponse<NewSuccess, Failure> {
+        return DownloadResponse<NewSuccess, Failure>(request: request,
+                                                     response: response,
+                                                     fileURL: fileURL,
+                                                     resumeData: resumeData,
+                                                     metrics: metrics,
+                                                     serializationDuration: serializationDuration,
+                                                     result: result.map(transform))
+    }
+
+    /// Evaluates the given closure when the result of this `DownloadResponse` is a success, passing the unwrapped
+    /// result value as a parameter.
+    ///
+    /// Use the `tryMap` method with a closure that may throw an error. For example:
+    ///
+    ///     let possibleData: DownloadResponse<Data> = ...
+    ///     let possibleObject = possibleData.tryMap {
+    ///         try JSONSerialization.jsonObject(with: $0)
+    ///     }
+    ///
+    /// - parameter transform: A closure that takes the success value of the instance's result.
+    ///
+    /// - returns: A success or failure `DownloadResponse` depending on the result of the given closure. If this
+    /// instance's result is a failure, returns the same failure.
+    public func tryMap<NewSuccess>(_ transform: (Success) throws -> NewSuccess) -> DownloadResponse<NewSuccess, Error> {
+        return DownloadResponse<NewSuccess, Error>(request: request,
+                                                   response: response,
+                                                   fileURL: fileURL,
+                                                   resumeData: resumeData,
+                                                   metrics: metrics,
+                                                   serializationDuration: serializationDuration,
+                                                   result: result.tryMap(transform))
+    }
+
+    /// Evaluates the specified closure when the `DownloadResponse` is a failure, passing the unwrapped error as a parameter.
+    ///
+    /// Use the `mapError` function with a closure that does not throw. For example:
+    ///
+    ///     let possibleData: DownloadResponse<Data> = ...
+    ///     let withMyError = possibleData.mapError { MyError.error($0) }
+    ///
+    /// - Parameter transform: A closure that takes the error of the instance.
+    ///
+    /// - Returns: A `DownloadResponse` instance containing the result of the transform.
+    public func mapError<NewFailure: Error>(_ transform: (Failure) -> NewFailure) -> DownloadResponse<Success, NewFailure> {
+        return DownloadResponse<Success, NewFailure>(request: request,
+                                                     response: response,
+                                                     fileURL: fileURL,
+                                                     resumeData: resumeData,
+                                                     metrics: metrics,
+                                                     serializationDuration: serializationDuration,
+                                                     result: result.mapError(transform))
+    }
+
+    /// Evaluates the specified closure when the `DownloadResponse` is a failure, passing the unwrapped error as a parameter.
+    ///
+    /// Use the `tryMapError` function with a closure that may throw an error. For example:
+    ///
+    ///     let possibleData: DownloadResponse<Data> = ...
+    ///     let possibleObject = possibleData.tryMapError {
+    ///         try someFailableFunction(taking: $0)
+    ///     }
+    ///
+    /// - Parameter transform: A throwing closure that takes the error of the instance.
+    ///
+    /// - Returns: A `DownloadResponse` instance containing the result of the transform.
+    public func tryMapError<NewFailure: Error>(_ transform: (Failure) throws -> NewFailure) -> DownloadResponse<Success, Error> {
+        return DownloadResponse<Success, Error>(request: request,
+                                                response: response,
+                                                fileURL: fileURL,
+                                                resumeData: resumeData,
+                                                metrics: metrics,
+                                                serializationDuration: serializationDuration,
+                                                result: result.tryMapError(transform))
+    }
+}

trolley/Pods/Alamofire/Source/ResponseSerialization.swift

@@ -0,0 +1,779 @@
+//
+//  ResponseSerialization.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+// MARK: Protocols
+
+/// The type to which all data response serializers must conform in order to serialize a response.
+public protocol DataResponseSerializerProtocol {
+    /// The type of serialized object to be created.
+    associatedtype SerializedObject
+
+    /// Serialize the response `Data` into the provided type..
+    ///
+    /// - Parameters:
+    ///   - request:  `URLRequest` which was used to perform the request, if any.
+    ///   - response: `HTTPURLResponse` received from the server, if any.
+    ///   - data:     `Data` returned from the server, if any.
+    ///   - error:    `Error` produced by Alamofire or the underlying `URLSession` during the request.
+    ///
+    /// - Returns:    The `SerializedObject`.
+    /// - Throws:     Any `Error` produced during serialization.
+    func serialize(request: URLRequest?, response: HTTPURLResponse?, data: Data?, error: Error?) throws -> SerializedObject
+}
+
+/// The type to which all download response serializers must conform in order to serialize a response.
+public protocol DownloadResponseSerializerProtocol {
+    /// The type of serialized object to be created.
+    associatedtype SerializedObject
+
+    /// Serialize the downloaded response `Data` from disk into the provided type..
+    ///
+    /// - Parameters:
+    ///   - request:  `URLRequest` which was used to perform the request, if any.
+    ///   - response: `HTTPURLResponse` received from the server, if any.
+    ///   - fileURL:  File `URL` to which the response data was downloaded.
+    ///   - error:    `Error` produced by Alamofire or the underlying `URLSession` during the request.
+    ///
+    /// - Returns:    The `SerializedObject`.
+    /// - Throws:     Any `Error` produced during serialization.
+    func serializeDownload(request: URLRequest?, response: HTTPURLResponse?, fileURL: URL?, error: Error?) throws -> SerializedObject
+}
+
+/// A serializer that can handle both data and download responses.
+public protocol ResponseSerializer: DataResponseSerializerProtocol & DownloadResponseSerializerProtocol {
+    /// `DataPreprocessor` used to prepare incoming `Data` for serialization.
+    var dataPreprocessor: DataPreprocessor { get }
+    /// `HTTPMethod`s for which empty response bodies are considered appropriate.
+    var emptyRequestMethods: Set<HTTPMethod> { get }
+    /// HTTP response codes for which empty response bodies are considered appropriate.
+    var emptyResponseCodes: Set<Int> { get }
+}
+
+/// Type used to preprocess `Data` before it handled by a serializer.
+public protocol DataPreprocessor {
+    /// Process           `Data` before it's handled by a serializer.
+    /// - Parameter data: The raw `Data` to process.
+    func preprocess(_ data: Data) throws -> Data
+}
+
+/// `DataPreprocessor` that returns passed `Data` without any transform.
+public struct PassthroughPreprocessor: DataPreprocessor {
+    public init() {}
+
+    public func preprocess(_ data: Data) throws -> Data { return data }
+}
+
+/// `DataPreprocessor` that trims Google's typical `)]}',\n` XSSI JSON header.
+public struct GoogleXSSIPreprocessor: DataPreprocessor {
+    public init() {}
+
+    public func preprocess(_ data: Data) throws -> Data {
+        return (data.prefix(6) == Data(")]}',\n".utf8)) ? data.dropFirst(6) : data
+    }
+}
+
+extension ResponseSerializer {
+    /// Default `DataPreprocessor`. `PassthroughPreprocessor` by default.
+    public static var defaultDataPreprocessor: DataPreprocessor { return PassthroughPreprocessor() }
+    /// Default `HTTPMethod`s for which empty response bodies are considered appropriate. `[.head]` by default.
+    public static var defaultEmptyRequestMethods: Set<HTTPMethod> { return [.head] }
+    /// HTTP response codes for which empty response bodies are considered appropriate. `[204, 205]` by default.
+    public static var defaultEmptyResponseCodes: Set<Int> { return [204, 205] }
+
+    public var dataPreprocessor: DataPreprocessor { return Self.defaultDataPreprocessor }
+    public var emptyRequestMethods: Set<HTTPMethod> { return Self.defaultEmptyRequestMethods }
+    public var emptyResponseCodes: Set<Int> { return Self.defaultEmptyResponseCodes }
+
+    /// Determines whether the `request` allows empty response bodies, if `request` exists.
+    ///
+    /// - Parameter request: `URLRequest` to evaluate.
+    ///
+    /// - Returns:           `Bool` representing the outcome of the evaluation, or `nil` if `request` was `nil`.
+    public func requestAllowsEmptyResponseData(_ request: URLRequest?) -> Bool? {
+        return request.flatMap { $0.httpMethod }
+            .flatMap(HTTPMethod.init)
+            .map { emptyRequestMethods.contains($0) }
+    }
+
+    /// Determines whether the `response` allows empty response bodies, if `response` exists`.
+    ///
+    /// - Parameter response: `HTTPURLResponse` to evaluate.
+    ///
+    /// - Returns:            `Bool` representing the outcome of the evaluation, or `nil` if `response` was `nil`.
+    public func responseAllowsEmptyResponseData(_ response: HTTPURLResponse?) -> Bool? {
+        return response.flatMap { $0.statusCode }
+            .map { emptyResponseCodes.contains($0) }
+    }
+
+    /// Determines whether `request` and `response` allow empty response bodies.
+    ///
+    /// - Parameters:
+    ///   - request:  `URLRequest` to evaluate.
+    ///   - response: `HTTPURLResponse` to evaluate.
+    ///
+    /// - Returns:    `true` if `request` or `response` allow empty bodies, `false` otherwise.
+    public func emptyResponseAllowed(forRequest request: URLRequest?, response: HTTPURLResponse?) -> Bool {
+        return (requestAllowsEmptyResponseData(request) == true) || (responseAllowsEmptyResponseData(response) == true)
+    }
+}
+
+/// By default, any serializer declared to conform to both types will get file serialization for free, as it just feeds
+/// the data read from disk into the data response serializer.
+public extension DownloadResponseSerializerProtocol where Self: DataResponseSerializerProtocol {
+    func serializeDownload(request: URLRequest?, response: HTTPURLResponse?, fileURL: URL?, error: Error?) throws -> Self.SerializedObject {
+        guard error == nil else { throw error! }
+
+        guard let fileURL = fileURL else {
+            throw AFError.responseSerializationFailed(reason: .inputFileNil)
+        }
+
+        let data: Data
+        do {
+            data = try Data(contentsOf: fileURL)
+        } catch {
+            throw AFError.responseSerializationFailed(reason: .inputFileReadFailed(at: fileURL))
+        }
+
+        do {
+            return try serialize(request: request, response: response, data: data, error: error)
+        } catch {
+            throw error
+        }
+    }
+}
+
+// MARK: - Default
+
+extension DataRequest {
+    /// Adds a handler to be called once the request has finished.
+    ///
+    /// - Parameters:
+    ///   - queue:             The queue on which the completion handler is dispatched. `.main` by default.
+    ///   - completionHandler: The code to be executed once the request has finished.
+    ///
+    /// - Returns:             The request.
+    @discardableResult
+    public func response(queue: DispatchQueue = .main, completionHandler: @escaping (AFDataResponse<Data?>) -> Void) -> Self {
+        appendResponseSerializer {
+            // Start work that should be on the serialization queue.
+            let result = AFResult<Data?>(value: self.data, error: self.error)
+            // End work that should be on the serialization queue.
+
+            self.underlyingQueue.async {
+                let response = DataResponse(request: self.request,
+                                            response: self.response,
+                                            data: self.data,
+                                            metrics: self.metrics,
+                                            serializationDuration: 0,
+                                            result: result)
+
+                self.eventMonitor?.request(self, didParseResponse: response)
+
+                self.responseSerializerDidComplete { queue.async { completionHandler(response) } }
+            }
+        }
+
+        return self
+    }
+
+    /// Adds a handler to be called once the request has finished.
+    ///
+    /// - Parameters:
+    ///   - queue:              The queue on which the completion handler is dispatched. `.main` by default
+    ///   - responseSerializer: The response serializer responsible for serializing the request, response, and data.
+    ///   - completionHandler:  The code to be executed once the request has finished.
+    ///
+    /// - Returns:              The request.
+    @discardableResult
+    public func response<Serializer: DataResponseSerializerProtocol>(queue: DispatchQueue = .main,
+                                                                     responseSerializer: Serializer,
+                                                                     completionHandler: @escaping (AFDataResponse<Serializer.SerializedObject>) -> Void)
+        -> Self {
+        appendResponseSerializer {
+            // Start work that should be on the serialization queue.
+            let start = CFAbsoluteTimeGetCurrent()
+            let result: AFResult<Serializer.SerializedObject> = Result {
+                try responseSerializer.serialize(request: self.request,
+                                                 response: self.response,
+                                                 data: self.data,
+                                                 error: self.error)
+            }.mapError { error in
+                error.asAFError(or: .responseSerializationFailed(reason: .customSerializationFailed(error: error)))
+            }
+
+            let end = CFAbsoluteTimeGetCurrent()
+            // End work that should be on the serialization queue.
+
+            self.underlyingQueue.async {
+                let response = DataResponse(request: self.request,
+                                            response: self.response,
+                                            data: self.data,
+                                            metrics: self.metrics,
+                                            serializationDuration: end - start,
+                                            result: result)
+
+                self.eventMonitor?.request(self, didParseResponse: response)
+
+                guard let serializerError = result.failure, let delegate = self.delegate else {
+                    self.responseSerializerDidComplete { queue.async { completionHandler(response) } }
+                    return
+                }
+
+                delegate.retryResult(for: self, dueTo: serializerError) { retryResult in
+                    var didComplete: (() -> Void)?
+
+                    defer {
+                        if let didComplete = didComplete {
+                            self.responseSerializerDidComplete { queue.async { didComplete() } }
+                        }
+                    }
+
+                    switch retryResult {
+                    case .doNotRetry:
+                        didComplete = { completionHandler(response) }
+
+                    case let .doNotRetryWithError(retryError):
+                        let result: AFResult<Serializer.SerializedObject> = .failure(retryError.asAFError(orFailWith: "Received retryError was not already AFError"))
+
+                        let response = DataResponse(request: self.request,
+                                                    response: self.response,
+                                                    data: self.data,
+                                                    metrics: self.metrics,
+                                                    serializationDuration: end - start,
+                                                    result: result)
+
+                        didComplete = { completionHandler(response) }
+
+                    case .retry, .retryWithDelay:
+                        delegate.retryRequest(self, withDelay: retryResult.delay)
+                    }
+                }
+            }
+        }
+
+        return self
+    }
+}
+
+extension DownloadRequest {
+    /// Adds a handler to be called once the request has finished.
+    ///
+    /// - Parameters:
+    ///   - queue:             The queue on which the completion handler is dispatched. `.main` by default.
+    ///   - completionHandler: The code to be executed once the request has finished.
+    ///
+    /// - Returns:             The request.
+    @discardableResult
+    public func response(queue: DispatchQueue = .main,
+                         completionHandler: @escaping (AFDownloadResponse<URL?>) -> Void)
+        -> Self {
+        appendResponseSerializer {
+            // Start work that should be on the serialization queue.
+            let result = AFResult<URL?>(value: self.fileURL, error: self.error)
+            // End work that should be on the serialization queue.
+
+            self.underlyingQueue.async {
+                let response = DownloadResponse(request: self.request,
+                                                response: self.response,
+                                                fileURL: self.fileURL,
+                                                resumeData: self.resumeData,
+                                                metrics: self.metrics,
+                                                serializationDuration: 0,
+                                                result: result)
+
+                self.eventMonitor?.request(self, didParseResponse: response)
+
+                self.responseSerializerDidComplete { queue.async { completionHandler(response) } }
+            }
+        }
+
+        return self
+    }
+
+    /// Adds a handler to be called once the request has finished.
+    ///
+    /// - Parameters:
+    ///   - queue:              The queue on which the completion handler is dispatched. `.main` by default.
+    ///   - responseSerializer: The response serializer responsible for serializing the request, response, and data
+    ///                         contained in the destination `URL`.
+    ///   - completionHandler:  The code to be executed once the request has finished.
+    ///
+    /// - Returns:              The request.
+    @discardableResult
+    public func response<T: DownloadResponseSerializerProtocol>(queue: DispatchQueue = .main,
+                                                                responseSerializer: T,
+                                                                completionHandler: @escaping (AFDownloadResponse<T.SerializedObject>) -> Void)
+        -> Self {
+        appendResponseSerializer {
+            // Start work that should be on the serialization queue.
+            let start = CFAbsoluteTimeGetCurrent()
+            let result: AFResult<T.SerializedObject> = Result {
+                try responseSerializer.serializeDownload(request: self.request,
+                                                         response: self.response,
+                                                         fileURL: self.fileURL,
+                                                         error: self.error)
+            }.mapError { error in
+                error.asAFError(or: .responseSerializationFailed(reason: .customSerializationFailed(error: error)))
+            }
+            let end = CFAbsoluteTimeGetCurrent()
+            // End work that should be on the serialization queue.
+
+            self.underlyingQueue.async {
+                let response = DownloadResponse(request: self.request,
+                                                response: self.response,
+                                                fileURL: self.fileURL,
+                                                resumeData: self.resumeData,
+                                                metrics: self.metrics,
+                                                serializationDuration: end - start,
+                                                result: result)
+
+                self.eventMonitor?.request(self, didParseResponse: response)
+
+                guard let serializerError = result.failure, let delegate = self.delegate else {
+                    self.responseSerializerDidComplete { queue.async { completionHandler(response) } }
+                    return
+                }
+
+                delegate.retryResult(for: self, dueTo: serializerError) { retryResult in
+                    var didComplete: (() -> Void)?
+
+                    defer {
+                        if let didComplete = didComplete {
+                            self.responseSerializerDidComplete { queue.async { didComplete() } }
+                        }
+                    }
+
+                    switch retryResult {
+                    case .doNotRetry:
+                        didComplete = { completionHandler(response) }
+
+                    case let .doNotRetryWithError(retryError):
+                        let result: AFResult<T.SerializedObject> = .failure(retryError.asAFError(orFailWith: "Received retryError was not already AFError"))
+
+                        let response = DownloadResponse(request: self.request,
+                                                        response: self.response,
+                                                        fileURL: self.fileURL,
+                                                        resumeData: self.resumeData,
+                                                        metrics: self.metrics,
+                                                        serializationDuration: end - start,
+                                                        result: result)
+
+                        didComplete = { completionHandler(response) }
+
+                    case .retry, .retryWithDelay:
+                        delegate.retryRequest(self, withDelay: retryResult.delay)
+                    }
+                }
+            }
+        }
+
+        return self
+    }
+}
+
+// MARK: - Data
+
+extension DataRequest {
+    /// Adds a handler to be called once the request has finished.
+    ///
+    /// - Parameters:
+    ///   - queue:             The queue on which the completion handler is dispatched. `.main` by default.
+    ///   - completionHandler: The code to be executed once the request has finished.
+    ///
+    /// - Returns:             The request.
+    @discardableResult
+    public func responseData(queue: DispatchQueue = .main,
+                             completionHandler: @escaping (AFDataResponse<Data>) -> Void)
+        -> Self {
+        return response(queue: queue,
+                        responseSerializer: DataResponseSerializer(),
+                        completionHandler: completionHandler)
+    }
+}
+
+/// A `ResponseSerializer` that performs minimal response checking and returns any response data as-is. By default, a
+/// request returning `nil` or no data is considered an error. However, if the response is has a status code valid for
+/// empty responses (`204`, `205`), then an empty `Data` value is returned.
+public final class DataResponseSerializer: ResponseSerializer {
+    public let dataPreprocessor: DataPreprocessor
+    public let emptyResponseCodes: Set<Int>
+    public let emptyRequestMethods: Set<HTTPMethod>
+
+    /// Creates an instance using the provided values.
+    ///
+    /// - Parameters:
+    ///   - dataPreprocessor:    `DataPreprocessor` used to prepare the received `Data` for serialization.
+    ///   - emptyResponseCodes:  The HTTP response codes for which empty responses are allowed. `[204, 205]` by default.
+    ///   - emptyRequestMethods: The HTTP request methods for which empty responses are allowed. `[.head]` by default.
+    public init(dataPreprocessor: DataPreprocessor = DataResponseSerializer.defaultDataPreprocessor,
+                emptyResponseCodes: Set<Int> = DataResponseSerializer.defaultEmptyResponseCodes,
+                emptyRequestMethods: Set<HTTPMethod> = DataResponseSerializer.defaultEmptyRequestMethods) {
+        self.dataPreprocessor = dataPreprocessor
+        self.emptyResponseCodes = emptyResponseCodes
+        self.emptyRequestMethods = emptyRequestMethods
+    }
+
+    public func serialize(request: URLRequest?, response: HTTPURLResponse?, data: Data?, error: Error?) throws -> Data {
+        guard error == nil else { throw error! }
+
+        guard var data = data, !data.isEmpty else {
+            guard emptyResponseAllowed(forRequest: request, response: response) else {
+                throw AFError.responseSerializationFailed(reason: .inputDataNilOrZeroLength)
+            }
+
+            return Data()
+        }
+
+        data = try dataPreprocessor.preprocess(data)
+
+        return data
+    }
+}
+
+extension DownloadRequest {
+    /// Adds a handler to be called once the request has finished.
+    ///
+    /// - Parameters:
+    ///   - queue:             The queue on which the completion handler is dispatched. `.main` by default.
+    ///   - completionHandler: The code to be executed once the request has finished.
+    ///
+    /// - Returns:             The request.
+    @discardableResult
+    public func responseData(queue: DispatchQueue = .main,
+                             completionHandler: @escaping (AFDownloadResponse<Data>) -> Void)
+        -> Self {
+        return response(queue: queue,
+                        responseSerializer: DataResponseSerializer(),
+                        completionHandler: completionHandler)
+    }
+}
+
+// MARK: - String
+
+/// A `ResponseSerializer` that decodes the response data as a `String`. By default, a request returning `nil` or no
+/// data is considered an error. However, if the response is has a status code valid for empty responses (`204`, `205`),
+/// then an empty `String` is returned.
+public final class StringResponseSerializer: ResponseSerializer {
+    public let dataPreprocessor: DataPreprocessor
+    /// Optional string encoding used to validate the response.
+    public let encoding: String.Encoding?
+    public let emptyResponseCodes: Set<Int>
+    public let emptyRequestMethods: Set<HTTPMethod>
+
+    /// Creates an instance with the provided values.
+    ///
+    /// - Parameters:
+    ///   - dataPreprocessor:    `DataPreprocessor` used to prepare the received `Data` for serialization.
+    ///   - encoding:            A string encoding. Defaults to `nil`, in which case the encoding will be determined
+    ///                          from the server response, falling back to the default HTTP character set, `ISO-8859-1`.
+    ///   - emptyResponseCodes:  The HTTP response codes for which empty responses are allowed. `[204, 205]` by default.
+    ///   - emptyRequestMethods: The HTTP request methods for which empty responses are allowed. `[.head]` by default.
+    public init(dataPreprocessor: DataPreprocessor = StringResponseSerializer.defaultDataPreprocessor,
+                encoding: String.Encoding? = nil,
+                emptyResponseCodes: Set<Int> = StringResponseSerializer.defaultEmptyResponseCodes,
+                emptyRequestMethods: Set<HTTPMethod> = StringResponseSerializer.defaultEmptyRequestMethods) {
+        self.dataPreprocessor = dataPreprocessor
+        self.encoding = encoding
+        self.emptyResponseCodes = emptyResponseCodes
+        self.emptyRequestMethods = emptyRequestMethods
+    }
+
+    public func serialize(request: URLRequest?, response: HTTPURLResponse?, data: Data?, error: Error?) throws -> String {
+        guard error == nil else { throw error! }
+
+        guard var data = data, !data.isEmpty else {
+            guard emptyResponseAllowed(forRequest: request, response: response) else {
+                throw AFError.responseSerializationFailed(reason: .inputDataNilOrZeroLength)
+            }
+
+            return ""
+        }
+
+        data = try dataPreprocessor.preprocess(data)
+
+        var convertedEncoding = encoding
+
+        if let encodingName = response?.textEncodingName as CFString?, convertedEncoding == nil {
+            let ianaCharSet = CFStringConvertIANACharSetNameToEncoding(encodingName)
+            let nsStringEncoding = CFStringConvertEncodingToNSStringEncoding(ianaCharSet)
+            convertedEncoding = String.Encoding(rawValue: nsStringEncoding)
+        }
+
+        let actualEncoding = convertedEncoding ?? .isoLatin1
+
+        guard let string = String(data: data, encoding: actualEncoding) else {
+            throw AFError.responseSerializationFailed(reason: .stringSerializationFailed(encoding: actualEncoding))
+        }
+
+        return string
+    }
+}
+
+extension DataRequest {
+    /// Adds a handler to be called once the request has finished.
+    ///
+    /// - Parameters:
+    ///   - queue:             The queue on which the completion handler is dispatched. `.main` by default.
+    ///   - encoding:          The string encoding. Defaults to `nil`, in which case the encoding will be determined from
+    ///                        the server response, falling back to the default HTTP character set, `ISO-8859-1`.
+    ///   - completionHandler: A closure to be executed once the request has finished.
+    ///
+    /// - Returns:             The request.
+    @discardableResult
+    public func responseString(queue: DispatchQueue = .main,
+                               encoding: String.Encoding? = nil,
+                               completionHandler: @escaping (AFDataResponse<String>) -> Void) -> Self {
+        return response(queue: queue,
+                        responseSerializer: StringResponseSerializer(encoding: encoding),
+                        completionHandler: completionHandler)
+    }
+}
+
+extension DownloadRequest {
+    /// Adds a handler to be called once the request has finished.
+    ///
+    /// - Parameters:
+    ///   - queue:             The queue on which the completion handler is dispatched. `.main` by default.
+    ///   - encoding:          The string encoding. Defaults to `nil`, in which case the encoding will be determined from
+    ///                        the server response, falling back to the default HTTP character set, `ISO-8859-1`.
+    ///   - completionHandler: A closure to be executed once the request has finished.
+    ///
+    /// - Returns:             The request.
+    @discardableResult
+    public func responseString(queue: DispatchQueue = .main,
+                               encoding: String.Encoding? = nil,
+                               completionHandler: @escaping (AFDownloadResponse<String>) -> Void)
+        -> Self {
+        return response(queue: queue,
+                        responseSerializer: StringResponseSerializer(encoding: encoding),
+                        completionHandler: completionHandler)
+    }
+}
+
+// MARK: - JSON
+
+/// A `ResponseSerializer` that decodes the response data using `JSONSerialization`. By default, a request returning
+/// `nil` or no data is considered an error. However, if the response is has a status code valid for empty responses
+/// (`204`, `205`), then an `NSNull`  value is returned.
+public final class JSONResponseSerializer: ResponseSerializer {
+    public let dataPreprocessor: DataPreprocessor
+    public let emptyResponseCodes: Set<Int>
+    public let emptyRequestMethods: Set<HTTPMethod>
+    /// `JSONSerialization.ReadingOptions` used when serializing a response.
+    public let options: JSONSerialization.ReadingOptions
+
+    /// Creates an instance with the provided values.
+    ///
+    /// - Parameters:
+    ///   - dataPreprocessor:    `DataPreprocessor` used to prepare the received `Data` for serialization.
+    ///   - emptyResponseCodes:  The HTTP response codes for which empty responses are allowed. `[204, 205]` by default.
+    ///   - emptyRequestMethods: The HTTP request methods for which empty responses are allowed. `[.head]` by default.
+    ///   - options:             The options to use. `.allowFragments` by default.
+    public init(dataPreprocessor: DataPreprocessor = JSONResponseSerializer.defaultDataPreprocessor,
+                emptyResponseCodes: Set<Int> = JSONResponseSerializer.defaultEmptyResponseCodes,
+                emptyRequestMethods: Set<HTTPMethod> = JSONResponseSerializer.defaultEmptyRequestMethods,
+                options: JSONSerialization.ReadingOptions = .allowFragments) {
+        self.dataPreprocessor = dataPreprocessor
+        self.emptyResponseCodes = emptyResponseCodes
+        self.emptyRequestMethods = emptyRequestMethods
+        self.options = options
+    }
+
+    public func serialize(request: URLRequest?, response: HTTPURLResponse?, data: Data?, error: Error?) throws -> Any {
+        guard error == nil else { throw error! }
+
+        guard var data = data, !data.isEmpty else {
+            guard emptyResponseAllowed(forRequest: request, response: response) else {
+                throw AFError.responseSerializationFailed(reason: .inputDataNilOrZeroLength)
+            }
+
+            return NSNull()
+        }
+
+        data = try dataPreprocessor.preprocess(data)
+
+        do {
+            return try JSONSerialization.jsonObject(with: data, options: options)
+        } catch {
+            throw AFError.responseSerializationFailed(reason: .jsonSerializationFailed(error: error))
+        }
+    }
+}
+
+extension DataRequest {
+    /// Adds a handler to be called once the request has finished.
+    ///
+    /// - Parameters:
+    ///   - queue:             The queue on which the completion handler is dispatched. `.main` by default.
+    ///   - options:           The JSON serialization reading options. `.allowFragments` by default.
+    ///   - completionHandler: A closure to be executed once the request has finished.
+    ///
+    /// - Returns:             The request.
+    @discardableResult
+    public func responseJSON(queue: DispatchQueue = .main,
+                             options: JSONSerialization.ReadingOptions = .allowFragments,
+                             completionHandler: @escaping (AFDataResponse<Any>) -> Void) -> Self {
+        return response(queue: queue,
+                        responseSerializer: JSONResponseSerializer(options: options),
+                        completionHandler: completionHandler)
+    }
+}
+
+extension DownloadRequest {
+    /// Adds a handler to be called once the request has finished.
+    ///
+    /// - Parameters:
+    ///   - queue:             The queue on which the completion handler is dispatched. `.main` by default.
+    ///   - options:           The JSON serialization reading options. `.allowFragments` by default.
+    ///   - completionHandler: A closure to be executed once the request has finished.
+    ///
+    /// - Returns:             The request.
+    @discardableResult
+    public func responseJSON(queue: DispatchQueue = .main,
+                             options: JSONSerialization.ReadingOptions = .allowFragments,
+                             completionHandler: @escaping (AFDownloadResponse<Any>) -> Void)
+        -> Self {
+        return response(queue: queue,
+                        responseSerializer: JSONResponseSerializer(options: options),
+                        completionHandler: completionHandler)
+    }
+}
+
+// MARK: - Empty
+
+/// Protocol representing an empty response. Use `T.emptyValue()` to get an instance.
+public protocol EmptyResponse {
+    /// Empty value for the conforming type.
+    ///
+    /// - Returns: Value of `Self` to use for empty values.
+    static func emptyValue() -> Self
+}
+
+/// Type representing an empty response. Use `Empty.value` to get the static instance.
+public struct Empty: Decodable {
+    /// Static `Empty` instance used for all `Empty` responses.
+    public static let value = Empty()
+}
+
+extension Empty: EmptyResponse {
+    public static func emptyValue() -> Empty {
+        return value
+    }
+}
+
+// MARK: - DataDecoder Protocol
+
+/// Any type which can decode `Data` into a `Decodable` type.
+public protocol DataDecoder {
+    /// Decode `Data` into the provided type.
+    ///
+    /// - Parameters:
+    ///   - type:  The `Type` to be decoded.
+    ///   - data:  The `Data` to be decoded.
+    ///
+    /// - Returns: The decoded value of type `D`.
+    /// - Throws:  Any error that occurs during decode.
+    func decode<D: Decodable>(_ type: D.Type, from data: Data) throws -> D
+}
+
+/// `JSONDecoder` automatically conforms to `DataDecoder`.
+extension JSONDecoder: DataDecoder {}
+
+// MARK: - Decodable
+
+/// A `ResponseSerializer` that decodes the response data as a generic value using any type that conforms to
+/// `DataDecoder`. By default, this is an instance of `JSONDecoder`. Additionally, a request returning `nil` or no data
+/// is considered an error. However, if the response is has a status code valid for empty responses (`204`, `205`), then
+/// the `Empty.value` value is returned.
+public final class DecodableResponseSerializer<T: Decodable>: ResponseSerializer {
+    public let dataPreprocessor: DataPreprocessor
+    /// The `DataDecoder` instance used to decode responses.
+    public let decoder: DataDecoder
+    public let emptyResponseCodes: Set<Int>
+    public let emptyRequestMethods: Set<HTTPMethod>
+
+    /// Creates an instance using the values provided.
+    ///
+    /// - Parameters:
+    ///   - dataPreprocessor:    `DataPreprocessor` used to prepare the received `Data` for serialization.
+    ///   - decoder:             The `DataDecoder`. `JSONDecoder()` by default.
+    ///   - emptyResponseCodes:  The HTTP response codes for which empty responses are allowed. `[204, 205]` by default.
+    ///   - emptyRequestMethods: The HTTP request methods for which empty responses are allowed. `[.head]` by default.
+    public init(dataPreprocessor: DataPreprocessor = DecodableResponseSerializer.defaultDataPreprocessor,
+                decoder: DataDecoder = JSONDecoder(),
+                emptyResponseCodes: Set<Int> = DecodableResponseSerializer.defaultEmptyResponseCodes,
+                emptyRequestMethods: Set<HTTPMethod> = DecodableResponseSerializer.defaultEmptyRequestMethods) {
+        self.dataPreprocessor = dataPreprocessor
+        self.decoder = decoder
+        self.emptyResponseCodes = emptyResponseCodes
+        self.emptyRequestMethods = emptyRequestMethods
+    }
+
+    public func serialize(request: URLRequest?, response: HTTPURLResponse?, data: Data?, error: Error?) throws -> T {
+        guard error == nil else { throw error! }
+
+        guard var data = data, !data.isEmpty else {
+            guard emptyResponseAllowed(forRequest: request, response: response) else {
+                throw AFError.responseSerializationFailed(reason: .inputDataNilOrZeroLength)
+            }
+
+            guard let emptyResponseType = T.self as? EmptyResponse.Type, let emptyValue = emptyResponseType.emptyValue() as? T else {
+                throw AFError.responseSerializationFailed(reason: .invalidEmptyResponse(type: "\(T.self)"))
+            }
+
+            return emptyValue
+        }
+
+        data = try dataPreprocessor.preprocess(data)
+
+        do {
+            return try decoder.decode(T.self, from: data)
+        } catch {
+            throw AFError.responseSerializationFailed(reason: .decodingFailed(error: error))
+        }
+    }
+}
+
+extension DataRequest {
+    /// Adds a handler to be called once the request has finished.
+    ///
+    /// - Parameters:
+    ///   - type:              `Decodable` type to decode from response data.
+    ///   - queue:             The queue on which the completion handler is dispatched. `.main` by default.
+    ///   - decoder:           `DataDecoder` to use to decode the response. `JSONDecoder()` by default.
+    ///   - completionHandler: A closure to be executed once the request has finished.
+    ///
+    /// - Returns:             The request.
+    @discardableResult
+    public func responseDecodable<T: Decodable>(of type: T.Type = T.self,
+                                                queue: DispatchQueue = .main,
+                                                decoder: DataDecoder = JSONDecoder(),
+                                                completionHandler: @escaping (AFDataResponse<T>) -> Void) -> Self {
+        return response(queue: queue,
+                        responseSerializer: DecodableResponseSerializer(decoder: decoder),
+                        completionHandler: completionHandler)
+    }
+}

trolley/Pods/Alamofire/Source/Result+Alamofire.swift

@@ -0,0 +1,109 @@
+//
+//  Result+Alamofire.swift
+//
+//  Copyright (c) 2019 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// Default type of `Result` returned by Alamofire, with an `AFError` `Failure` type.
+public typealias AFResult<Success> = Result<Success, AFError>
+
+// MARK: - Internal APIs
+
+extension Result {
+    /// Returns the associated value if the result is a success, `nil` otherwise.
+    var success: Success? {
+        guard case let .success(value) = self else { return nil }
+        return value
+    }
+
+    /// Returns the associated error value if the result is a failure, `nil` otherwise.
+    var failure: Failure? {
+        guard case let .failure(error) = self else { return nil }
+        return error
+    }
+
+    /// Initializes a `Result` from value or error. Returns `.failure` if the error is non-nil, `.success` otherwise.
+    ///
+    /// - Parameters:
+    ///   - value: A value.
+    ///   - error: An `Error`.
+    init(value: Success, error: Failure?) {
+        if let error = error {
+            self = .failure(error)
+        } else {
+            self = .success(value)
+        }
+    }
+
+    /// Evaluates the specified closure when the `Result` is a success, passing the unwrapped value as a parameter.
+    ///
+    /// Use the `tryMap` method with a closure that may throw an error. For example:
+    ///
+    ///     let possibleData: Result<Data, Error> = .success(Data(...))
+    ///     let possibleObject = possibleData.tryMap {
+    ///         try JSONSerialization.jsonObject(with: $0)
+    ///     }
+    ///
+    /// - parameter transform: A closure that takes the success value of the instance.
+    ///
+    /// - returns: A `Result` containing the result of the given closure. If this instance is a failure, returns the
+    ///            same failure.
+    func tryMap<NewSuccess>(_ transform: (Success) throws -> NewSuccess) -> Result<NewSuccess, Error> {
+        switch self {
+        case let .success(value):
+            do {
+                return try .success(transform(value))
+            } catch {
+                return .failure(error)
+            }
+        case let .failure(error):
+            return .failure(error)
+        }
+    }
+
+    /// Evaluates the specified closure when the `Result` is a failure, passing the unwrapped error as a parameter.
+    ///
+    /// Use the `tryMapError` function with a closure that may throw an error. For example:
+    ///
+    ///     let possibleData: Result<Data, Error> = .success(Data(...))
+    ///     let possibleObject = possibleData.tryMapError {
+    ///         try someFailableFunction(taking: $0)
+    ///     }
+    ///
+    /// - Parameter transform: A throwing closure that takes the error of the instance.
+    ///
+    /// - Returns: A `Result` instance containing the result of the transform. If this instance is a success, returns
+    ///            the same success.
+    func tryMapError<NewFailure: Error>(_ transform: (Failure) throws -> NewFailure) -> Result<Success, Error> {
+        switch self {
+        case let .failure(error):
+            do {
+                return try .failure(transform(error))
+            } catch {
+                return .failure(error)
+            }
+        case let .success(value):
+            return .success(value)
+        }
+    }
+}

trolley/Pods/Alamofire/Source/RetryPolicy.swift

@@ -0,0 +1,363 @@
+//
+//  RetryPolicy.swift
+//
+//  Copyright (c) 2019 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// A retry policy that retries requests using an exponential backoff for allowed HTTP methods and HTTP status codes
+/// as well as certain types of networking errors.
+open class RetryPolicy: RequestInterceptor {
+    /// The default retry limit for retry policies.
+    public static let defaultRetryLimit: UInt = 2
+
+    /// The default exponential backoff base for retry policies (must be a minimum of 2).
+    public static let defaultExponentialBackoffBase: UInt = 2
+
+    /// The default exponential backoff scale for retry policies.
+    public static let defaultExponentialBackoffScale: Double = 0.5
+
+    /// The default HTTP methods to retry.
+    /// See [RFC 2616 - Section 9.1.2](https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html) for more information.
+    public static let defaultRetryableHTTPMethods: Set<HTTPMethod> = [.delete, // [Delete](https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.7) - not always idempotent
+                                                                      .get, // [GET](https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.3) - generally idempotent
+                                                                      .head, // [HEAD](https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.4) - generally idempotent
+                                                                      .options, // [OPTIONS](https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.2) - inherently idempotent
+                                                                      .put, // [PUT](https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.6) - not always idempotent
+                                                                      .trace // [TRACE](https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.8) - inherently idempotent
+    ]
+
+    /// The default HTTP status codes to retry.
+    /// See [RFC 2616 - Section 10](https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10) for more information.
+    public static let defaultRetryableHTTPStatusCodes: Set<Int> = [408, // [Request Timeout](https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.9)
+                                                                   500, // [Internal Server Error](https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.1)
+                                                                   502, // [Bad Gateway](https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.3)
+                                                                   503, // [Service Unavailable](https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.4)
+                                                                   504 // [Gateway Timeout](https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.5)
+    ]
+
+    /// The default URL error codes to retry.
+    public static let defaultRetryableURLErrorCodes: Set<URLError.Code> = [// [Security] App Transport Security disallowed a connection because there is no secure network connection.
+        //   - [Disabled] ATS settings do not change at runtime.
+        // .appTransportSecurityRequiresSecureConnection,
+
+        // [System] An app or app extension attempted to connect to a background session that is already connected to a
+        // process.
+        //   - [Enabled] The other process could release the background session.
+        .backgroundSessionInUseByAnotherProcess,
+                                                                           
+        // [System] The shared container identifier of the URL session configuration is needed but has not been set.
+        //   - [Disabled] Cannot change at runtime.
+        // .backgroundSessionRequiresSharedContainer,
+
+        // [System] The app is suspended or exits while a background data task is processing.
+        //   - [Enabled] App can be foregrounded or launched to recover.
+        .backgroundSessionWasDisconnected,
+                                                                           
+        // [Network] The URL Loading system received bad data from the server.
+        //   - [Enabled] Server could return valid data when retrying.
+        .badServerResponse,
+                                                                           
+        // [Resource] A malformed URL prevented a URL request from being initiated.
+        //   - [Disabled] URL was most likely constructed incorrectly.
+        // .badURL,
+
+        // [System] A connection was attempted while a phone call is active on a network that does not support
+        // simultaneous phone and data communication (EDGE or GPRS).
+        //   - [Enabled] Phone call could be ended to allow request to recover.
+        .callIsActive,
+                                                                           
+        // [Client] An asynchronous load has been canceled.
+        //   - [Disabled] Request was cancelled by the client.
+        // .cancelled,
+
+        // [File System] A download task couldn’t close the downloaded file on disk.
+        //   - [Disabled] File system error is unlikely to recover with retry.
+        // .cannotCloseFile,
+
+        // [Network] An attempt to connect to a host failed.
+        //   - [Enabled] Server or DNS lookup could recover during retry.
+        .cannotConnectToHost,
+                                                                           
+        // [File System] A download task couldn’t create the downloaded file on disk because of an I/O failure.
+        //   - [Disabled] File system error is unlikely to recover with retry.
+        // .cannotCreateFile,
+
+        // [Data] Content data received during a connection request had an unknown content encoding.
+        //   - [Disabled] Server is unlikely to modify the content encoding during a retry.
+        // .cannotDecodeContentData,
+
+        // [Data] Content data received during a connection request could not be decoded for a known content encoding.
+        //   - [Disabled] Server is unlikely to modify the content encoding during a retry.
+        // .cannotDecodeRawData,
+
+        // [Network] The host name for a URL could not be resolved.
+        //   - [Enabled] Server or DNS lookup could recover during retry.
+        .cannotFindHost,
+                                                                           
+        // [Network] A request to load an item only from the cache could not be satisfied.
+        //   - [Enabled] Cache could be populated during a retry.
+        .cannotLoadFromNetwork,
+                                                                           
+        // [File System] A download task was unable to move a downloaded file on disk.
+        //   - [Disabled] File system error is unlikely to recover with retry.
+        // .cannotMoveFile,
+
+        // [File System] A download task was unable to open the downloaded file on disk.
+        //   - [Disabled] File system error is unlikely to recover with retry.
+        // .cannotOpenFile,
+
+        // [Data] A task could not parse a response.
+        //   - [Disabled] Invalid response is unlikely to recover with retry.
+        // .cannotParseResponse,
+
+        // [File System] A download task was unable to remove a downloaded file from disk.
+        //   - [Disabled] File system error is unlikely to recover with retry.
+        // .cannotRemoveFile,
+
+        // [File System] A download task was unable to write to the downloaded file on disk.
+        //   - [Disabled] File system error is unlikely to recover with retry.
+        // .cannotWriteToFile,
+
+        // [Security] A client certificate was rejected.
+        //   - [Disabled] Client certificate is unlikely to change with retry.
+        // .clientCertificateRejected,
+
+        // [Security] A client certificate was required to authenticate an SSL connection during a request.
+        //   - [Disabled] Client certificate is unlikely to be provided with retry.
+        // .clientCertificateRequired,
+
+        // [Data] The length of the resource data exceeds the maximum allowed.
+        //   - [Disabled] Resource will likely still exceed the length maximum on retry.
+        // .dataLengthExceedsMaximum,
+
+        // [System] The cellular network disallowed a connection.
+        //   - [Enabled] WiFi connection could be established during retry.
+        .dataNotAllowed,
+                                                                           
+        // [Network] The host address could not be found via DNS lookup.
+        //   - [Enabled] DNS lookup could succeed during retry.
+        .dnsLookupFailed,
+                                                                           
+        // [Data] A download task failed to decode an encoded file during the download.
+        //   - [Enabled] Server could correct the decoding issue with retry.
+        .downloadDecodingFailedMidStream,
+                                                                           
+        // [Data] A download task failed to decode an encoded file after downloading.
+        //   - [Enabled] Server could correct the decoding issue with retry.
+        .downloadDecodingFailedToComplete,
+                                                                           
+        // [File System] A file does not exist.
+        //   - [Disabled] File system error is unlikely to recover with retry.
+        // .fileDoesNotExist,
+
+        // [File System] A request for an FTP file resulted in the server responding that the file is not a plain file,
+        // but a directory.
+        //   - [Disabled] FTP directory is not likely to change to a file during a retry.
+        // .fileIsDirectory,
+
+        // [Network] A redirect loop has been detected or the threshold for number of allowable redirects has been
+        // exceeded (currently 16).
+        //   - [Disabled] The redirect loop is unlikely to be resolved within the retry window.
+        // .httpTooManyRedirects,
+
+        // [System] The attempted connection required activating a data context while roaming, but international roaming
+        // is disabled.
+        //   - [Enabled] WiFi connection could be established during retry.
+        .internationalRoamingOff,
+                                                                           
+        // [Connectivity] A client or server connection was severed in the middle of an in-progress load.
+        //   - [Enabled] A network connection could be established during retry.
+        .networkConnectionLost,
+                                                                           
+        // [File System] A resource couldn’t be read because of insufficient permissions.
+        //   - [Disabled] Permissions are unlikely to be granted during retry.
+        // .noPermissionsToReadFile,
+
+        // [Connectivity] A network resource was requested, but an internet connection has not been established and
+        // cannot be established automatically.
+        //   - [Enabled] A network connection could be established during retry.
+        .notConnectedToInternet,
+                                                                           
+        // [Resource] A redirect was specified by way of server response code, but the server did not accompany this
+        // code with a redirect URL.
+        //   - [Disabled] The redirect URL is unlikely to be supplied during a retry.
+        // .redirectToNonExistentLocation,
+
+        // [Client] A body stream is needed but the client did not provide one.
+        //   - [Disabled] The client will be unlikely to supply a body stream during retry.
+        // .requestBodyStreamExhausted,
+
+        // [Resource] A requested resource couldn’t be retrieved.
+        //   - [Disabled] The resource is unlikely to become available during the retry window.
+        // .resourceUnavailable,
+
+        // [Security] An attempt to establish a secure connection failed for reasons that can’t be expressed more
+        // specifically.
+        //   - [Enabled] The secure connection could be established during a retry given the lack of specificity
+        //     provided by the error.
+        .secureConnectionFailed,
+                                                                           
+        // [Security] A server certificate had a date which indicates it has expired, or is not yet valid.
+        //   - [Enabled] The server certificate could become valid within the retry window.
+        .serverCertificateHasBadDate,
+                                                                           
+        // [Security] A server certificate was not signed by any root server.
+        //   - [Disabled] The server certificate is unlikely to change during the retry window.
+        // .serverCertificateHasUnknownRoot,
+
+        // [Security] A server certificate is not yet valid.
+        //   - [Enabled] The server certificate could become valid within the retry window.
+        .serverCertificateNotYetValid,
+                                                                           
+        // [Security] A server certificate was signed by a root server that isn’t trusted.
+        //   - [Disabled] The server certificate is unlikely to become trusted within the retry window.
+        // .serverCertificateUntrusted,
+
+        // [Network] An asynchronous operation timed out.
+        //   - [Enabled] The request timed out for an unknown reason and should be retried.
+        .timedOut
+
+        // [System] The URL Loading System encountered an error that it can’t interpret.
+        //   - [Disabled] The error could not be interpreted and is unlikely to be recovered from during a retry.
+        // .unknown,
+
+        // [Resource] A properly formed URL couldn’t be handled by the framework.
+        //   - [Disabled] The URL is unlikely to change during a retry.
+        // .unsupportedURL,
+
+        // [Client] Authentication is required to access a resource.
+        //   - [Disabled] The user authentication is unlikely to be provided by retrying.
+        // .userAuthenticationRequired,
+
+        // [Client] An asynchronous request for authentication has been canceled by the user.
+        //   - [Disabled] The user cancelled authentication and explicitly took action to not retry.
+        // .userCancelledAuthentication,
+
+        // [Resource] A server reported that a URL has a non-zero content length, but terminated the network connection
+        // gracefully without sending any data.
+        //   - [Disabled] The server is unlikely to provide data during the retry window.
+        // .zeroByteResource,
+    ]
+
+    /// The total number of times the request is allowed to be retried.
+    public let retryLimit: UInt
+
+    /// The base of the exponential backoff policy (should always be greater than or equal to 2).
+    public let exponentialBackoffBase: UInt
+
+    /// The scale of the exponential backoff.
+    public let exponentialBackoffScale: Double
+
+    /// The HTTP methods that are allowed to be retried.
+    public let retryableHTTPMethods: Set<HTTPMethod>
+
+    /// The HTTP status codes that are automatically retried by the policy.
+    public let retryableHTTPStatusCodes: Set<Int>
+
+    /// The URL error codes that are automatically retried by the policy.
+    public let retryableURLErrorCodes: Set<URLError.Code>
+
+    /// Creates an `ExponentialBackoffRetryPolicy` from the specified parameters.
+    ///
+    /// - Parameters:
+    ///   - retryLimit:               The total number of times the request is allowed to be retried. `2` by default.
+    ///   - exponentialBackoffBase:   The base of the exponential backoff policy. `2` by default.
+    ///   - exponentialBackoffScale:  The scale of the exponential backoff. `0.5` by default.
+    ///   - retryableHTTPMethods:     The HTTP methods that are allowed to be retried.
+    ///                               `RetryPolicy.defaultRetryableHTTPMethods` by default.
+    ///   - retryableHTTPStatusCodes: The HTTP status codes that are automatically retried by the policy.
+    ///                               `RetryPolicy.defaultRetryableHTTPStatusCodes` by default.
+    ///   - retryableURLErrorCodes:   The URL error codes that are automatically retried by the policy.
+    ///                               `RetryPolicy.defaultRetryableURLErrorCodes` by default.
+    public init(retryLimit: UInt = RetryPolicy.defaultRetryLimit,
+                exponentialBackoffBase: UInt = RetryPolicy.defaultExponentialBackoffBase,
+                exponentialBackoffScale: Double = RetryPolicy.defaultExponentialBackoffScale,
+                retryableHTTPMethods: Set<HTTPMethod> = RetryPolicy.defaultRetryableHTTPMethods,
+                retryableHTTPStatusCodes: Set<Int> = RetryPolicy.defaultRetryableHTTPStatusCodes,
+                retryableURLErrorCodes: Set<URLError.Code> = RetryPolicy.defaultRetryableURLErrorCodes) {
+        precondition(exponentialBackoffBase >= 2, "The `exponentialBackoffBase` must be a minimum of 2.")
+
+        self.retryLimit = retryLimit
+        self.exponentialBackoffBase = exponentialBackoffBase
+        self.exponentialBackoffScale = exponentialBackoffScale
+        self.retryableHTTPMethods = retryableHTTPMethods
+        self.retryableHTTPStatusCodes = retryableHTTPStatusCodes
+        self.retryableURLErrorCodes = retryableURLErrorCodes
+    }
+
+    open func retry(_ request: Request,
+                    for session: Session,
+                    dueTo error: Error,
+                    completion: @escaping (RetryResult) -> Void) {
+        if
+            request.retryCount < retryLimit,
+            let httpMethod = request.request?.method,
+            retryableHTTPMethods.contains(httpMethod),
+            shouldRetry(response: request.response, error: error) {
+            let timeDelay = pow(Double(exponentialBackoffBase), Double(request.retryCount)) * exponentialBackoffScale
+            completion(.retryWithDelay(timeDelay))
+        } else {
+            completion(.doNotRetry)
+        }
+    }
+
+    private func shouldRetry(response: HTTPURLResponse?, error: Error) -> Bool {
+        if let statusCode = response?.statusCode, retryableHTTPStatusCodes.contains(statusCode) {
+            return true
+        } else if let errorCode = (error as? URLError)?.code, retryableURLErrorCodes.contains(errorCode) {
+            return true
+        }
+
+        return false
+    }
+}
+
+// MARK: -
+
+/// A retry policy that automatically retries idempotent requests for network connection lost errors. For more
+/// information about retrying network connection lost errors, please refer to Apple's
+/// [technical document](https://developer.apple.com/library/content/qa/qa1941/_index.html).
+open class ConnectionLostRetryPolicy: RetryPolicy {
+    /// Creates a `ConnectionLostRetryPolicy` instance from the specified parameters.
+    ///
+    /// - Parameters:
+    ///   - retryLimit:              The total number of times the request is allowed to be retried.
+    ///                              `RetryPolicy.defaultRetryLimit` by default.
+    ///   - exponentialBackoffBase:  The base of the exponential backoff policy.
+    ///                              `RetryPolicy.defaultExponentialBackoffBase` by default.
+    ///   - exponentialBackoffScale: The scale of the exponential backoff.
+    ///                              `RetryPolicy.defaultExponentialBackoffScale` by default.
+    ///   - retryableHTTPMethods:    The idempotent http methods to retry.
+    ///                              `RetryPolicy.defaultRetryableHTTPMethods` by default.
+    public init(retryLimit: UInt = RetryPolicy.defaultRetryLimit,
+                exponentialBackoffBase: UInt = RetryPolicy.defaultExponentialBackoffBase,
+                exponentialBackoffScale: Double = RetryPolicy.defaultExponentialBackoffScale,
+                retryableHTTPMethods: Set<HTTPMethod> = RetryPolicy.defaultRetryableHTTPMethods) {
+        super.init(retryLimit: retryLimit,
+                   exponentialBackoffBase: exponentialBackoffBase,
+                   exponentialBackoffScale: exponentialBackoffScale,
+                   retryableHTTPMethods: retryableHTTPMethods,
+                   retryableHTTPStatusCodes: [],
+                   retryableURLErrorCodes: [.networkConnectionLost])
+    }
+}

trolley/Pods/Alamofire/Source/ServerTrustEvaluation.swift

@@ -0,0 +1,606 @@
+//
+//  ServerTrustPolicy.swift
+//
+//  Copyright (c) 2014-2016 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// Responsible for managing the mapping of `ServerTrustEvaluating` values to given hosts.
+open class ServerTrustManager {
+    /// Determines whether all hosts for this `ServerTrustManager` must be evaluated. `true` by default.
+    public let allHostsMustBeEvaluated: Bool
+
+    /// The dictionary of policies mapped to a particular host.
+    public let evaluators: [String: ServerTrustEvaluating]
+
+    /// Initializes the `ServerTrustManager` instance with the given evaluators.
+    ///
+    /// Since different servers and web services can have different leaf certificates, intermediate and even root
+    /// certificates, it is important to have the flexibility to specify evaluation policies on a per host basis. This
+    /// allows for scenarios such as using default evaluation for host1, certificate pinning for host2, public key
+    /// pinning for host3 and disabling evaluation for host4.
+    ///
+    /// - Parameters:
+    ///   - allHostsMustBeEvaluated: The value determining whether all hosts for this instance must be evaluated. `true`
+    ///                              by default.
+    ///   - evaluators:              A dictionary of evaluators mapped to hosts.
+    public init(allHostsMustBeEvaluated: Bool = true, evaluators: [String: ServerTrustEvaluating]) {
+        self.allHostsMustBeEvaluated = allHostsMustBeEvaluated
+        self.evaluators = evaluators
+    }
+
+    /// Returns the `ServerTrustEvaluating` value for the given host, if one is set.
+    ///
+    /// By default, this method will return the policy that perfectly matches the given host. Subclasses could override
+    /// this method and implement more complex mapping implementations such as wildcards.
+    ///
+    /// - Parameter host: The host to use when searching for a matching policy.
+    ///
+    /// - Returns:        The `ServerTrustEvaluating` value for the given host if found, `nil` otherwise.
+    /// - Throws:         `AFError.serverTrustEvaluationFailed` if `allHostsMustBeEvaluated` is `true` and no matching
+    ///                   evaluators are found.
+    open func serverTrustEvaluator(forHost host: String) throws -> ServerTrustEvaluating? {
+        guard let evaluator = evaluators[host] else {
+            if allHostsMustBeEvaluated {
+                throw AFError.serverTrustEvaluationFailed(reason: .noRequiredEvaluator(host: host))
+            }
+
+            return nil
+        }
+
+        return evaluator
+    }
+}
+
+/// A protocol describing the API used to evaluate server trusts.
+public protocol ServerTrustEvaluating {
+#if os(Linux)
+// Implement this once Linux has API for evaluating server trusts.
+#else
+    /// Evaluates the given `SecTrust` value for the given `host`.
+    ///
+    /// - Parameters:
+    ///   - trust: The `SecTrust` value to evaluate.
+    ///   - host:  The host for which to evaluate the `SecTrust` value.
+    ///
+    /// - Returns: A `Bool` indicating whether the evaluator considers the `SecTrust` value valid for `host`.
+    func evaluate(_ trust: SecTrust, forHost host: String) throws
+#endif
+}
+
+// MARK: - Server Trust Evaluators
+
+/// An evaluator which uses the default server trust evaluation while allowing you to control whether to validate the
+/// host provided by the challenge. Applications are encouraged to always validate the host in production environments
+/// to guarantee the validity of the server's certificate chain.
+public final class DefaultTrustEvaluator: ServerTrustEvaluating {
+    private let validateHost: Bool
+
+    /// Creates a `DefaultTrustEvaluator`.
+    ///
+    /// - Parameter validateHost: Determines whether or not the evaluator should validate the host. `true` by default.
+    public init(validateHost: Bool = true) {
+        self.validateHost = validateHost
+    }
+
+    public func evaluate(_ trust: SecTrust, forHost host: String) throws {
+        if validateHost {
+            try trust.af.performValidation(forHost: host)
+        }
+
+        try trust.af.performDefaultValidation(forHost: host)
+    }
+}
+
+/// An evaluator which Uses the default and revoked server trust evaluations allowing you to control whether to validate
+/// the host provided by the challenge as well as specify the revocation flags for testing for revoked certificates.
+/// Apple platforms did not start testing for revoked certificates automatically until iOS 10.1, macOS 10.12 and tvOS
+/// 10.1 which is demonstrated in our TLS tests. Applications are encouraged to always validate the host in production
+/// environments to guarantee the validity of the server's certificate chain.
+public final class RevocationTrustEvaluator: ServerTrustEvaluating {
+    /// Represents the options to be use when evaluating the status of a certificate.
+    /// Only Revocation Policy Constants are valid, and can be found in [Apple's documentation](https://developer.apple.com/documentation/security/certificate_key_and_trust_services/policies/1563600-revocation_policy_constants).
+    public struct Options: OptionSet {
+        /// Perform revocation checking using the CRL (Certification Revocation List) method.
+        public static let crl = Options(rawValue: kSecRevocationCRLMethod)
+        /// Consult only locally cached replies; do not use network access.
+        public static let networkAccessDisabled = Options(rawValue: kSecRevocationNetworkAccessDisabled)
+        /// Perform revocation checking using OCSP (Online Certificate Status Protocol).
+        public static let ocsp = Options(rawValue: kSecRevocationOCSPMethod)
+        /// Prefer CRL revocation checking over OCSP; by default, OCSP is preferred.
+        public static let preferCRL = Options(rawValue: kSecRevocationPreferCRL)
+        /// Require a positive response to pass the policy. If the flag is not set, revocation checking is done on a
+        /// "best attempt" basis, where failure to reach the server is not considered fatal.
+        public static let requirePositiveResponse = Options(rawValue: kSecRevocationRequirePositiveResponse)
+        /// Perform either OCSP or CRL checking. The checking is performed according to the method(s) specified in the
+        /// certificate and the value of `preferCRL`.
+        public static let any = Options(rawValue: kSecRevocationUseAnyAvailableMethod)
+
+        /// The raw value of the option.
+        public let rawValue: CFOptionFlags
+
+        /// Creates an `Options` value with the given `CFOptionFlags`.
+        ///
+        /// - Parameter rawValue: The `CFOptionFlags` value to initialize with.
+        public init(rawValue: CFOptionFlags) {
+            self.rawValue = rawValue
+        }
+    }
+
+    private let performDefaultValidation: Bool
+    private let validateHost: Bool
+    private let options: Options
+
+    /// Creates a `RevocationTrustEvaluator`.
+    ///
+    /// - Note: Default and host validation will fail when using this evaluator with self-signed certificates. Use
+    ///         `PinnedCertificatesTrustEvaluator` if you need to use self-signed certificates.
+    ///
+    /// - Parameters:
+    ///   - performDefaultValidation:     Determines whether default validation should be performed in addition to
+    ///                                   evaluating the pinned certificates. `true` by default.
+    ///   - validateHost:                 Determines whether or not the evaluator should validate the host, in addition
+    ///                                   to performing the default evaluation, even if `performDefaultValidation` is
+    ///                                   `false`. `true` by default.
+    ///   - options:                      The `Options` to use to check the revocation status of the certificate. `.any`
+    ///                                   by default.
+    public init(performDefaultValidation: Bool = true, validateHost: Bool = true, options: Options = .any) {
+        self.performDefaultValidation = performDefaultValidation
+        self.validateHost = validateHost
+        self.options = options
+    }
+
+    public func evaluate(_ trust: SecTrust, forHost host: String) throws {
+        if performDefaultValidation {
+            try trust.af.performDefaultValidation(forHost: host)
+        }
+
+        if validateHost {
+            try trust.af.performValidation(forHost: host)
+        }
+
+        if #available(iOS 12, macOS 10.14, tvOS 12, watchOS 5, *) {
+            try trust.af.evaluate(afterApplying: SecPolicy.af.revocation(options: options))
+        } else {
+            try trust.af.validate(policy: SecPolicy.af.revocation(options: options)) { status, result in
+                AFError.serverTrustEvaluationFailed(reason: .revocationCheckFailed(output: .init(host, trust, status, result), options: options))
+            }
+        }
+    }
+}
+
+/// Uses the pinned certificates to validate the server trust. The server trust is considered valid if one of the pinned
+/// certificates match one of the server certificates. By validating both the certificate chain and host, certificate
+/// pinning provides a very secure form of server trust validation mitigating most, if not all, MITM attacks.
+/// Applications are encouraged to always validate the host and require a valid certificate chain in production
+/// environments.
+public final class PinnedCertificatesTrustEvaluator: ServerTrustEvaluating {
+    private let certificates: [SecCertificate]
+    private let acceptSelfSignedCertificates: Bool
+    private let performDefaultValidation: Bool
+    private let validateHost: Bool
+
+    /// Creates a `PinnedCertificatesTrustEvaluator`.
+    ///
+    /// - Parameters:
+    ///   - certificates:                 The certificates to use to evaluate the trust. All `cer`, `crt`, and `der`
+    ///                                   certificates in `Bundle.main` by default.
+    ///   - acceptSelfSignedCertificates: Adds the provided certificates as anchors for the trust evaluation, allowing
+    ///                                   self-signed certificates to pass. `false` by default. THIS SETTING SHOULD BE
+    ///                                   FALSE IN PRODUCTION!
+    ///   - performDefaultValidation:     Determines whether default validation should be performed in addition to
+    ///                                   evaluating the pinned certificates. `true` by default.
+    ///   - validateHost:                 Determines whether or not the evaluator should validate the host, in addition
+    ///                                   to performing the default evaluation, even if `performDefaultValidation` is
+    ///                                   `false`. `true` by default.
+    public init(certificates: [SecCertificate] = Bundle.main.af.certificates,
+                acceptSelfSignedCertificates: Bool = false,
+                performDefaultValidation: Bool = true,
+                validateHost: Bool = true) {
+        self.certificates = certificates
+        self.acceptSelfSignedCertificates = acceptSelfSignedCertificates
+        self.performDefaultValidation = performDefaultValidation
+        self.validateHost = validateHost
+    }
+
+    public func evaluate(_ trust: SecTrust, forHost host: String) throws {
+        guard !certificates.isEmpty else {
+            throw AFError.serverTrustEvaluationFailed(reason: .noCertificatesFound)
+        }
+
+        if acceptSelfSignedCertificates {
+            try trust.af.setAnchorCertificates(certificates)
+        }
+
+        if performDefaultValidation {
+            try trust.af.performDefaultValidation(forHost: host)
+        }
+
+        if validateHost {
+            try trust.af.performValidation(forHost: host)
+        }
+
+        let serverCertificatesData = Set(trust.af.certificateData)
+        let pinnedCertificatesData = Set(certificates.af.data)
+        let pinnedCertificatesInServerData = !serverCertificatesData.isDisjoint(with: pinnedCertificatesData)
+        if !pinnedCertificatesInServerData {
+            throw AFError.serverTrustEvaluationFailed(reason: .certificatePinningFailed(host: host,
+                                                                                        trust: trust,
+                                                                                        pinnedCertificates: certificates,
+                                                                                        serverCertificates: trust.af.certificates))
+        }
+    }
+}
+
+/// Uses the pinned public keys to validate the server trust. The server trust is considered valid if one of the pinned
+/// public keys match one of the server certificate public keys. By validating both the certificate chain and host,
+/// public key pinning provides a very secure form of server trust validation mitigating most, if not all, MITM attacks.
+/// Applications are encouraged to always validate the host and require a valid certificate chain in production
+/// environments.
+public final class PublicKeysTrustEvaluator: ServerTrustEvaluating {
+    private let keys: [SecKey]
+    private let performDefaultValidation: Bool
+    private let validateHost: Bool
+
+    /// Creates a `PublicKeysTrustEvaluator`.
+    ///
+    /// - Note: Default and host validation will fail when using this evaluator with self-signed certificates. Use
+    ///         `PinnedCertificatesTrustEvaluator` if you need to use self-signed certificates.
+    ///
+    /// - Parameters:
+    ///   - keys:                     The `SecKey`s to use to validate public keys. Defaults to the public keys of all
+    ///                               certificates included in the main bundle.
+    ///   - performDefaultValidation: Determines whether default validation should be performed in addition to
+    ///                               evaluating the pinned certificates. `true` by default.
+    ///   - validateHost:             Determines whether or not the evaluator should validate the host, in addition to
+    ///                               performing the default evaluation, even if `performDefaultValidation` is `false`.
+    ///                               `true` by default.
+    public init(keys: [SecKey] = Bundle.main.af.publicKeys,
+                performDefaultValidation: Bool = true,
+                validateHost: Bool = true) {
+        self.keys = keys
+        self.performDefaultValidation = performDefaultValidation
+        self.validateHost = validateHost
+    }
+
+    public func evaluate(_ trust: SecTrust, forHost host: String) throws {
+        guard !keys.isEmpty else {
+            throw AFError.serverTrustEvaluationFailed(reason: .noPublicKeysFound)
+        }
+
+        if performDefaultValidation {
+            try trust.af.performDefaultValidation(forHost: host)
+        }
+
+        if validateHost {
+            try trust.af.performValidation(forHost: host)
+        }
+
+        let pinnedKeysInServerKeys: Bool = {
+            for serverPublicKey in trust.af.publicKeys {
+                for pinnedPublicKey in keys {
+                    if serverPublicKey == pinnedPublicKey {
+                        return true
+                    }
+                }
+            }
+            return false
+        }()
+
+        if !pinnedKeysInServerKeys {
+            throw AFError.serverTrustEvaluationFailed(reason: .publicKeyPinningFailed(host: host,
+                                                                                      trust: trust,
+                                                                                      pinnedKeys: keys,
+                                                                                      serverKeys: trust.af.publicKeys))
+        }
+    }
+}
+
+/// Uses the provided evaluators to validate the server trust. The trust is only considered valid if all of the
+/// evaluators consider it valid.
+public final class CompositeTrustEvaluator: ServerTrustEvaluating {
+    private let evaluators: [ServerTrustEvaluating]
+
+    /// Creates a `CompositeTrustEvaluator`.
+    ///
+    /// - Parameter evaluators: The `ServerTrustEvaluating` values used to evaluate the server trust.
+    public init(evaluators: [ServerTrustEvaluating]) {
+        self.evaluators = evaluators
+    }
+
+    public func evaluate(_ trust: SecTrust, forHost host: String) throws {
+        try evaluators.evaluate(trust, forHost: host)
+    }
+}
+
+/// Disables all evaluation which in turn will always consider any server trust as valid.
+///
+/// **THIS EVALUATOR SHOULD NEVER BE USED IN PRODUCTION!**
+public final class DisabledEvaluator: ServerTrustEvaluating {
+    /// Creates an instance.
+    public init() {}
+
+    public func evaluate(_ trust: SecTrust, forHost host: String) throws {}
+}
+
+// MARK: - Extensions
+
+public extension Array where Element == ServerTrustEvaluating {
+#if os(Linux)
+// Add this same convenience method for Linux.
+#else
+    /// Evaluates the given `SecTrust` value for the given `host`.
+    ///
+    /// - Parameters:
+    ///   - trust: The `SecTrust` value to evaluate.
+    ///   - host:  The host for which to evaluate the `SecTrust` value.
+    ///
+    /// - Returns: Whether or not the evaluator considers the `SecTrust` value valid for `host`.
+    func evaluate(_ trust: SecTrust, forHost host: String) throws {
+        for evaluator in self {
+            try evaluator.evaluate(trust, forHost: host)
+        }
+    }
+#endif
+}
+
+extension Bundle: AlamofireExtended {}
+public extension AlamofireExtension where ExtendedType: Bundle {
+    /// Returns all valid `cer`, `crt`, and `der` certificates in the bundle.
+    var certificates: [SecCertificate] {
+        return paths(forResourcesOfTypes: [".cer", ".CER", ".crt", ".CRT", ".der", ".DER"]).compactMap { path in
+            guard
+                let certificateData = try? Data(contentsOf: URL(fileURLWithPath: path)) as CFData,
+                let certificate = SecCertificateCreateWithData(nil, certificateData) else { return nil }
+
+            return certificate
+        }
+    }
+
+    /// Returns all public keys for the valid certificates in the bundle.
+    var publicKeys: [SecKey] {
+        return certificates.af.publicKeys
+    }
+
+    /// Returns all pathnames for the resources identified by the provided file extensions.
+    ///
+    /// - Parameter types: The filename extensions locate.
+    ///
+    /// - Returns:         All pathnames for the given filename extensions.
+    func paths(forResourcesOfTypes types: [String]) -> [String] {
+        return Array(Set(types.flatMap { type.paths(forResourcesOfType: $0, inDirectory: nil) }))
+    }
+}
+
+extension SecTrust: AlamofireExtended {}
+public extension AlamofireExtension where ExtendedType == SecTrust {
+    /// Evaluates `self` after applying the `SecPolicy` value provided.
+    ///
+    /// - Parameter policy: The `SecPolicy` to apply to `self` before evaluation.
+    ///
+    /// - Throws:           Any `Error` from applying the `SecPolicy` or from evaluation.
+    @available(iOS 12, macOS 10.14, tvOS 12, watchOS 5, *)
+    func evaluate(afterApplying policy: SecPolicy) throws {
+        try apply(policy: policy).af.evaluate()
+    }
+
+    /// Attempts to validate `self` using the `SecPolicy` provided and transforming any error produced using the closure passed.
+    ///
+    /// - Parameters:
+    ///   - policy:        The `SecPolicy` used to evaluate `self`.
+    ///   - errorProducer: The closure used transform the failed `OSStatus` and `SecTrustResultType`.
+    /// - Throws:          Any `Error` from applying the `policy`, or the result of `errorProducer` if validation fails.
+    @available(iOS, introduced: 10, deprecated: 12, renamed: "evaluate(afterApplying:)")
+    @available(macOS, introduced: 10.12, deprecated: 10.14, renamed: "evaluate(afterApplying:)")
+    @available(tvOS, introduced: 10, deprecated: 12, renamed: "evaluate(afterApplying:)")
+    @available(watchOS, introduced: 3, deprecated: 5, renamed: "evaluate(afterApplying:)")
+    func validate(policy: SecPolicy, errorProducer: (_ status: OSStatus, _ result: SecTrustResultType) -> Error) throws {
+        try apply(policy: policy).af.validate(errorProducer: errorProducer)
+    }
+
+    /// Applies a `SecPolicy` to `self`, throwing if it fails.
+    ///
+    /// - Parameter policy: The `SecPolicy`.
+    ///
+    /// - Returns: `self`, with the policy applied.
+    /// - Throws: An `AFError.serverTrustEvaluationFailed` instance with a `.policyApplicationFailed` reason.
+    func apply(policy: SecPolicy) throws -> SecTrust {
+        let status = SecTrustSetPolicies(type, policy)
+
+        guard status.af.isSuccess else {
+            throw AFError.serverTrustEvaluationFailed(reason: .policyApplicationFailed(trust: type,
+                                                                                       policy: policy,
+                                                                                       status: status))
+        }
+
+        return type
+    }
+
+    /// Evaluate `self`, throwing an `Error` if evaluation fails.
+    ///
+    /// - Throws: `AFError.serverTrustEvaluationFailed` with reason `.trustValidationFailed` and associated error from
+    ///           the underlying evaluation.
+    @available(iOS 12, macOS 10.14, tvOS 12, watchOS 5, *)
+    func evaluate() throws {
+        var error: CFError?
+        let evaluationSucceeded = SecTrustEvaluateWithError(type, &error)
+
+        if !evaluationSucceeded {
+            throw AFError.serverTrustEvaluationFailed(reason: .trustEvaluationFailed(error: error))
+        }
+    }
+
+    /// Validate `self`, passing any failure values through `errorProducer`.
+    ///
+    /// - Parameter errorProducer: The closure used to transform the failed `OSStatus` and `SecTrustResultType` into an
+    ///                            `Error`.
+    /// - Throws:                  The `Error` produced by the `errorProducer` closure.
+    @available(iOS, introduced: 10, deprecated: 12, renamed: "evaluate()")
+    @available(macOS, introduced: 10.12, deprecated: 10.14, renamed: "evaluate()")
+    @available(tvOS, introduced: 10, deprecated: 12, renamed: "evaluate()")
+    @available(watchOS, introduced: 3, deprecated: 5, renamed: "evaluate()")
+    func validate(errorProducer: (_ status: OSStatus, _ result: SecTrustResultType) -> Error) throws {
+        var result = SecTrustResultType.invalid
+        let status = SecTrustEvaluate(type, &result)
+
+        guard status.af.isSuccess && result.af.isSuccess else {
+            throw errorProducer(status, result)
+        }
+    }
+
+    /// Sets a custom certificate chain on `self`, allowing full validation of a self-signed certificate and its chain.
+    ///
+    /// - Parameter certificates: The `SecCertificate`s to add to the chain.
+    /// - Throws:                 Any error produced when applying the new certificate chain.
+    func setAnchorCertificates(_ certificates: [SecCertificate]) throws {
+        // Add additional anchor certificates.
+        let status = SecTrustSetAnchorCertificates(type, certificates as CFArray)
+        guard status.af.isSuccess else {
+            throw AFError.serverTrustEvaluationFailed(reason: .settingAnchorCertificatesFailed(status: status,
+                                                                                               certificates: certificates))
+        }
+
+        // Reenable system anchor certificates.
+        let systemStatus = SecTrustSetAnchorCertificatesOnly(type, true)
+        guard systemStatus.af.isSuccess else {
+            throw AFError.serverTrustEvaluationFailed(reason: .settingAnchorCertificatesFailed(status: systemStatus,
+                                                                                               certificates: certificates))
+        }
+    }
+
+    /// The public keys contained in `self`.
+    var publicKeys: [SecKey] {
+        return certificates.af.publicKeys
+    }
+
+    /// The `SecCertificate`s contained i `self`.
+    var certificates: [SecCertificate] {
+        return (0..<SecTrustGetCertificateCount(type)).compactMap { index in
+            SecTrustGetCertificateAtIndex(type, index)
+        }
+    }
+
+    /// The `Data` values for all certificates contained in `self`.
+    var certificateData: [Data] {
+        return certificates.af.data
+    }
+
+    /// Validates `self` after applying `SecPolicy.af.default`. This evaluation does not validate the hostname.
+    ///
+    /// - Parameter host: The hostname, used only in the error output if validation fails.
+    /// - Throws: An `AFError.serverTrustEvaluationFailed` instance with a `.defaultEvaluationFailed` reason.
+    func performDefaultValidation(forHost host: String) throws {
+        if #available(iOS 12, macOS 10.14, tvOS 12, watchOS 5, *) {
+            try evaluate(afterApplying: SecPolicy.af.default)
+        } else {
+            try validate(policy: SecPolicy.af.default) { status, result in
+                AFError.serverTrustEvaluationFailed(reason: .defaultEvaluationFailed(output: .init(host, type, status, result)))
+            }
+        }
+    }
+
+    /// Validates `self` after applying `SecPolicy.af.hostname(host)`, which performs the default validation as well as
+    /// hostname validation.
+    ///
+    /// - Parameter host: The hostname to use in the validation.
+    /// - Throws:         An `AFError.serverTrustEvaluationFailed` instance with a `.defaultEvaluationFailed` reason.
+    func performValidation(forHost host: String) throws {
+        if #available(iOS 12, macOS 10.14, tvOS 12, watchOS 5, *) {
+            try evaluate(afterApplying: SecPolicy.af.hostname(host))
+        } else {
+            try validate(policy: SecPolicy.af.hostname(host)) { status, result in
+                AFError.serverTrustEvaluationFailed(reason: .hostValidationFailed(output: .init(host, type, status, result)))
+            }
+        }
+    }
+}
+
+extension SecPolicy: AlamofireExtended {}
+public extension AlamofireExtension where ExtendedType == SecPolicy {
+    /// Creates a `SecPolicy` instance which will validate server certificates but not require a host name match.
+    static let `default` = SecPolicyCreateSSL(true, nil)
+
+    /// Creates a `SecPolicy` instance which will validate server certificates and much match the provided hostname.
+    ///
+    /// - Parameter hostname: The hostname to validate against.
+    ///
+    /// - Returns:            The `SecPolicy`.
+    static func hostname(_ hostname: String) -> SecPolicy {
+        return SecPolicyCreateSSL(true, hostname as CFString)
+    }
+
+    /// Creates a `SecPolicy` which checks the revocation of certificates.
+    ///
+    /// - Parameter options: The `RevocationTrustEvaluator.Options` for evaluation.
+    ///
+    /// - Returns:           The `SecPolicy`.
+    /// - Throws:            An `AFError.serverTrustEvaluationFailed` error with reason `.revocationPolicyCreationFailed`
+    ///                      if the policy cannot be created.
+    static func revocation(options: RevocationTrustEvaluator.Options) throws -> SecPolicy {
+        guard let policy = SecPolicyCreateRevocation(options.rawValue) else {
+            throw AFError.serverTrustEvaluationFailed(reason: .revocationPolicyCreationFailed)
+        }
+
+        return policy
+    }
+}
+
+extension Array: AlamofireExtended {}
+public extension AlamofireExtension where ExtendedType == [SecCertificate] {
+    /// All `Data` values for the contained `SecCertificate`s.
+    var data: [Data] {
+        return type.map { SecCertificateCopyData($0) as Data }
+    }
+
+    /// All public `SecKey` values for the contained `SecCertificate`s.
+    var publicKeys: [SecKey] {
+        return type.compactMap { $0.af.publicKey }
+    }
+}
+
+extension SecCertificate: AlamofireExtended {}
+public extension AlamofireExtension where ExtendedType == SecCertificate {
+    /// The public key for `self`, if it can be extracted.
+    var publicKey: SecKey? {
+        let policy = SecPolicyCreateBasicX509()
+        var trust: SecTrust?
+        let trustCreationStatus = SecTrustCreateWithCertificates(type, policy, &trust)
+
+        guard let createdTrust = trust, trustCreationStatus == errSecSuccess else { return nil }
+
+        return SecTrustCopyPublicKey(createdTrust)
+    }
+}
+
+extension OSStatus: AlamofireExtended {}
+public extension AlamofireExtension where ExtendedType == OSStatus {
+    /// Returns whether `self` is `errSecSuccess`.
+    var isSuccess: Bool { return type == errSecSuccess }
+}
+
+extension SecTrustResultType: AlamofireExtended {}
+public extension AlamofireExtension where ExtendedType == SecTrustResultType {
+    /// Returns whether `self is `.unspecified` or `.proceed`.
+    var isSuccess: Bool {
+        return (type == .unspecified || type == .proceed)
+    }
+}

trolley/Pods/Alamofire/Source/SessionDelegate.swift

@@ -0,0 +1,305 @@
+//
+//  SessionDelegate.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// Class which implements the various `URLSessionDelegate` methods to connect various Alamofire features.
+open class SessionDelegate: NSObject {
+    private let fileManager: FileManager
+
+    weak var stateProvider: SessionStateProvider?
+    var eventMonitor: EventMonitor?
+
+    /// Creates an instance from the given `FileManager`.
+    ///
+    /// - Parameter fileManager: `FileManager` to use for underlying file management, such as moving downloaded files.
+    ///                          `.default` by default.
+    public init(fileManager: FileManager = .default) {
+        self.fileManager = fileManager
+    }
+}
+
+/// Type which provides various `Session` state values.
+protocol SessionStateProvider: AnyObject {
+    var serverTrustManager: ServerTrustManager? { get }
+    var redirectHandler: RedirectHandler? { get }
+    var cachedResponseHandler: CachedResponseHandler? { get }
+
+    func request(for task: URLSessionTask) -> Request?
+    func didGatherMetricsForTask(_ task: URLSessionTask)
+    func didCompleteTask(_ task: URLSessionTask)
+    func credential(for task: URLSessionTask, in protectionSpace: URLProtectionSpace) -> URLCredential?
+    func cancelRequestsForSessionInvalidation(with error: Error?)
+}
+
+// MARK: URLSessionDelegate
+
+extension SessionDelegate: URLSessionDelegate {
+    open func urlSession(_ session: URLSession, didBecomeInvalidWithError error: Error?) {
+        eventMonitor?.urlSession(session, didBecomeInvalidWithError: error)
+
+        stateProvider?.cancelRequestsForSessionInvalidation(with: error)
+    }
+}
+
+// MARK: URLSessionTaskDelegate
+
+extension SessionDelegate: URLSessionTaskDelegate {
+    /// Result of a `URLAuthenticationChallenge` evaluation.
+    typealias ChallengeEvaluation = (disposition: URLSession.AuthChallengeDisposition, credential: URLCredential?, error: AFError?)
+
+    open func urlSession(_ session: URLSession,
+                         task: URLSessionTask,
+                         didReceive challenge: URLAuthenticationChallenge,
+                         completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+        eventMonitor?.urlSession(session, task: task, didReceive: challenge)
+
+        let evaluation: ChallengeEvaluation
+        switch challenge.protectionSpace.authenticationMethod {
+        case NSURLAuthenticationMethodServerTrust:
+            evaluation = attemptServerTrustAuthentication(with: challenge)
+        case NSURLAuthenticationMethodHTTPBasic, NSURLAuthenticationMethodHTTPDigest, NSURLAuthenticationMethodNTLM, NSURLAuthenticationMethodNegotiate:
+            evaluation = attemptCredentialAuthentication(for: challenge, belongingTo: task)
+        // case NSURLAuthenticationMethodClientCertificate:
+        // Alamofire doesn't currently support client certificate validation.
+        default:
+            evaluation = (.performDefaultHandling, nil, nil)
+        }
+
+        if let error = evaluation.error {
+            stateProvider?.request(for: task)?.didFailTask(task, earlyWithError: error)
+        }
+
+        completionHandler(evaluation.disposition, evaluation.credential)
+    }
+
+    /// Evaluates the server trust `URLAuthenticationChallenge` received.
+    ///
+    /// - Parameter challenge: The `URLAuthenticationChallenge`.
+    ///
+    /// - Returns:             The `ChallengeEvaluation`.
+    func attemptServerTrustAuthentication(with challenge: URLAuthenticationChallenge) -> ChallengeEvaluation {
+        let host = challenge.protectionSpace.host
+
+        guard challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust,
+            let trust = challenge.protectionSpace.serverTrust
+        else {
+            return (.performDefaultHandling, nil, nil)
+        }
+
+        do {
+            guard let evaluator = try stateProvider?.serverTrustManager?.serverTrustEvaluator(forHost: host) else {
+                return (.performDefaultHandling, nil, nil)
+            }
+
+            try evaluator.evaluate(trust, forHost: host)
+
+            return (.useCredential, URLCredential(trust: trust), nil)
+        } catch {
+            return (.cancelAuthenticationChallenge, nil, error.asAFError(or: .serverTrustEvaluationFailed(reason: .customEvaluationFailed(error: error))))
+        }
+    }
+
+    /// Evaluates the credential-based authentication `URLAuthenticationChallenge` received for `task`.
+    ///
+    /// - Parameters:
+    ///   - challenge: The `URLAuthenticationChallenge`.
+    ///   - task:      The `URLSessionTask` which received the challenge.
+    ///
+    /// - Returns:     The `ChallengeEvaluation`.
+    func attemptCredentialAuthentication(for challenge: URLAuthenticationChallenge,
+                                         belongingTo task: URLSessionTask) -> ChallengeEvaluation {
+        guard challenge.previousFailureCount == 0 else {
+            return (.rejectProtectionSpace, nil, nil)
+        }
+
+        guard let credential = stateProvider?.credential(for: task, in: challenge.protectionSpace) else {
+            return (.performDefaultHandling, nil, nil)
+        }
+
+        return (.useCredential, credential, nil)
+    }
+
+    open func urlSession(_ session: URLSession,
+                         task: URLSessionTask,
+                         didSendBodyData bytesSent: Int64,
+                         totalBytesSent: Int64,
+                         totalBytesExpectedToSend: Int64) {
+        eventMonitor?.urlSession(session,
+                                 task: task,
+                                 didSendBodyData: bytesSent,
+                                 totalBytesSent: totalBytesSent,
+                                 totalBytesExpectedToSend: totalBytesExpectedToSend)
+
+        stateProvider?.request(for: task)?.updateUploadProgress(totalBytesSent: totalBytesSent,
+                                                                totalBytesExpectedToSend: totalBytesExpectedToSend)
+    }
+
+    open func urlSession(_ session: URLSession,
+                         task: URLSessionTask,
+                         needNewBodyStream completionHandler: @escaping (InputStream?) -> Void) {
+        eventMonitor?.urlSession(session, taskNeedsNewBodyStream: task)
+
+        guard let request = stateProvider?.request(for: task) as? UploadRequest else {
+            fatalError("needNewBodyStream for request that isn't UploadRequest.")
+        }
+
+        completionHandler(request.inputStream())
+    }
+
+    open func urlSession(_ session: URLSession,
+                         task: URLSessionTask,
+                         willPerformHTTPRedirection response: HTTPURLResponse,
+                         newRequest request: URLRequest,
+                         completionHandler: @escaping (URLRequest?) -> Void) {
+        eventMonitor?.urlSession(session, task: task, willPerformHTTPRedirection: response, newRequest: request)
+
+        if let redirectHandler = stateProvider?.request(for: task)?.redirectHandler ?? stateProvider?.redirectHandler {
+            redirectHandler.task(task, willBeRedirectedTo: request, for: response, completion: completionHandler)
+        } else {
+            completionHandler(request)
+        }
+    }
+
+    open func urlSession(_ session: URLSession, task: URLSessionTask, didFinishCollecting metrics: URLSessionTaskMetrics) {
+        eventMonitor?.urlSession(session, task: task, didFinishCollecting: metrics)
+
+        stateProvider?.request(for: task)?.didGatherMetrics(metrics)
+
+        stateProvider?.didGatherMetricsForTask(task)
+    }
+
+    open func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
+        eventMonitor?.urlSession(session, task: task, didCompleteWithError: error)
+
+        stateProvider?.request(for: task)?.didCompleteTask(task, with: error.map { $0.asAFError(or: .sessionTaskFailed(error: $0)) })
+
+        stateProvider?.didCompleteTask(task)
+    }
+
+    @available(macOS 10.13, iOS 11.0, tvOS 11.0, watchOS 4.0, *)
+    open func urlSession(_ session: URLSession, taskIsWaitingForConnectivity task: URLSessionTask) {
+        eventMonitor?.urlSession(session, taskIsWaitingForConnectivity: task)
+    }
+}
+
+// MARK: URLSessionDataDelegate
+
+extension SessionDelegate: URLSessionDataDelegate {
+    open func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, didReceive data: Data) {
+        eventMonitor?.urlSession(session, dataTask: dataTask, didReceive: data)
+
+        guard let request = stateProvider?.request(for: dataTask) as? DataRequest else {
+            fatalError("dataTask received data for incorrect Request subclass: \(String(describing: stateProvider?.request(for: dataTask)))")
+        }
+
+        request.didReceive(data: data)
+    }
+
+    open func urlSession(_ session: URLSession,
+                         dataTask: URLSessionDataTask,
+                         willCacheResponse proposedResponse: CachedURLResponse,
+                         completionHandler: @escaping (CachedURLResponse?) -> Void) {
+        eventMonitor?.urlSession(session, dataTask: dataTask, willCacheResponse: proposedResponse)
+
+        if let handler = stateProvider?.request(for: dataTask)?.cachedResponseHandler ?? stateProvider?.cachedResponseHandler {
+            handler.dataTask(dataTask, willCacheResponse: proposedResponse, completion: completionHandler)
+        } else {
+            completionHandler(proposedResponse)
+        }
+    }
+}
+
+// MARK: URLSessionDownloadDelegate
+
+extension SessionDelegate: URLSessionDownloadDelegate {
+    open func urlSession(_ session: URLSession,
+                         downloadTask: URLSessionDownloadTask,
+                         didResumeAtOffset fileOffset: Int64,
+                         expectedTotalBytes: Int64) {
+        eventMonitor?.urlSession(session,
+                                 downloadTask: downloadTask,
+                                 didResumeAtOffset: fileOffset,
+                                 expectedTotalBytes: expectedTotalBytes)
+
+        guard let downloadRequest = stateProvider?.request(for: downloadTask) as? DownloadRequest else {
+            fatalError("No DownloadRequest found for downloadTask: \(downloadTask)")
+        }
+
+        downloadRequest.updateDownloadProgress(bytesWritten: fileOffset,
+                                               totalBytesExpectedToWrite: expectedTotalBytes)
+    }
+
+    open func urlSession(_ session: URLSession,
+                         downloadTask: URLSessionDownloadTask,
+                         didWriteData bytesWritten: Int64,
+                         totalBytesWritten: Int64,
+                         totalBytesExpectedToWrite: Int64) {
+        eventMonitor?.urlSession(session,
+                                 downloadTask: downloadTask,
+                                 didWriteData: bytesWritten,
+                                 totalBytesWritten: totalBytesWritten,
+                                 totalBytesExpectedToWrite: totalBytesExpectedToWrite)
+
+        guard let downloadRequest = stateProvider?.request(for: downloadTask) as? DownloadRequest else {
+            fatalError("No DownloadRequest found for downloadTask: \(downloadTask)")
+        }
+
+        downloadRequest.updateDownloadProgress(bytesWritten: bytesWritten,
+                                               totalBytesExpectedToWrite: totalBytesExpectedToWrite)
+    }
+
+    open func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL) {
+        eventMonitor?.urlSession(session, downloadTask: downloadTask, didFinishDownloadingTo: location)
+
+        guard let request = stateProvider?.request(for: downloadTask) as? DownloadRequest else {
+            fatalError("Download finished but either no request found or request wasn't DownloadRequest")
+        }
+
+        guard let response = request.response else {
+            fatalError("URLSessionDownloadTask finished downloading with no response.")
+        }
+
+        let (destination, options) = (request.destination)(location, response)
+
+        eventMonitor?.request(request, didCreateDestinationURL: destination)
+
+        do {
+            if options.contains(.removePreviousFile), fileManager.fileExists(atPath: destination.path) {
+                try fileManager.removeItem(at: destination)
+            }
+
+            if options.contains(.createIntermediateDirectories) {
+                let directory = destination.deletingLastPathComponent()
+                try fileManager.createDirectory(at: directory, withIntermediateDirectories: true)
+            }
+
+            try fileManager.moveItem(at: location, to: destination)
+
+            request.didFinishDownloading(using: downloadTask, with: .success(destination))
+        } catch {
+            request.didFinishDownloading(using: downloadTask, with: .failure(.downloadedFileMoveFailed(error: error, source: location, destination: destination)))
+        }
+    }
+}

trolley/Pods/Alamofire/Source/URLConvertible+URLRequestConvertible.swift

@@ -0,0 +1,105 @@
+//
+//  URLConvertible+URLRequestConvertible.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// Types adopting the `URLConvertible` protocol can be used to construct `URL`s, which can then be used to construct
+/// `URLRequests`.
+public protocol URLConvertible {
+    /// Returns a `URL` from the conforming instance or throws.
+    ///
+    /// - Returns: The `URL` created from the instance.
+    /// - Throws:  Any error thrown while creating the `URL`.
+    func asURL() throws -> URL
+}
+
+extension String: URLConvertible {
+    /// Returns a `URL` if `self` can be used to initialize a `URL` instance, otherwise throws.
+    ///
+    /// - Returns: The `URL` initialized with `self`.
+    /// - Throws:  An `AFError.invalidURL` instance.
+    public func asURL() throws -> URL {
+        guard let url = URL(string: self) else { throw AFError.invalidURL(url: self) }
+
+        return url
+    }
+}
+
+extension URL: URLConvertible {
+    /// Returns `self`.
+    public func asURL() throws -> URL { return self }
+}
+
+extension URLComponents: URLConvertible {
+    /// Returns a `URL` if the `self`'s `url` is not nil, otherwise throws.
+    ///
+    /// - Returns: The `URL` from the `url` property.
+    /// - Throws:  An `AFError.invalidURL` instance.
+    public func asURL() throws -> URL {
+        guard let url = url else { throw AFError.invalidURL(url: self) }
+
+        return url
+    }
+}
+
+// MARK: -
+
+/// Types adopting the `URLRequestConvertible` protocol can be used to safely construct `URLRequest`s.
+public protocol URLRequestConvertible {
+    /// Returns a `URLRequest` or throws if an `Error` was encountered.
+    ///
+    /// - Returns: A `URLRequest`.
+    /// - Throws:  Any error thrown while constructing the `URLRequest`.
+    func asURLRequest() throws -> URLRequest
+}
+
+extension URLRequestConvertible {
+    /// The `URLRequest` returned by discarding any `Error` encountered.
+    public var urlRequest: URLRequest? { return try? asURLRequest() }
+}
+
+extension URLRequest: URLRequestConvertible {
+    /// Returns `self`.
+    public func asURLRequest() throws -> URLRequest { return self }
+}
+
+// MARK: -
+
+extension URLRequest {
+    /// Creates an instance with the specified `url`, `method`, and `headers`.
+    ///
+    /// - Parameters:
+    ///   - url:     The `URLConvertible` value.
+    ///   - method:  The `HTTPMethod`.
+    ///   - headers: The `HTTPHeaders`, `nil` by default.
+    /// - Throws:    Any error thrown while converting the `URLConvertible` to a `URL`.
+    public init(url: URLConvertible, method: HTTPMethod, headers: HTTPHeaders? = nil) throws {
+        let url = try url.asURL()
+
+        self.init(url: url)
+
+        httpMethod = method.rawValue
+        allHTTPHeaderFields = headers?.dictionary
+    }
+}

trolley/Pods/Alamofire/Source/URLEncodedFormEncoder.swift

@@ -0,0 +1,973 @@
+//
+//  URLEncodedFormEncoder.swift
+//
+//  Copyright (c) 2019 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+/// An object that encodes instances into URL-encoded query strings.
+///
+/// There is no published specification for how to encode collection types. By default, the convention of appending
+/// `[]` to the key for array values (`foo[]=1&foo[]=2`), and appending the key surrounded by square brackets for
+/// nested dictionary values (`foo[bar]=baz`) is used. Optionally, `ArrayEncoding` can be used to omit the
+/// square brackets appended to array keys.
+///
+/// `BoolEncoding` can be used to configure how `Bool` values are encoded. The default behavior is to encode
+/// `true` as 1 and `false` as 0.
+///
+/// `DateEncoding` can be used to configure how `Date` values are encoded. By default, the `.deferredToDate`
+/// strategy is used, which formats dates from their structure.
+///
+/// `SpaceEncoding` can be used to configure how spaces are encoded. Modern encodings use percent replacement (`%20`),
+/// while older encodings may expect spaces to be replaced with `+`.
+///
+/// This type is largely based on Vapor's [`url-encoded-form`](https://github.com/vapor/url-encoded-form) project.
+public final class URLEncodedFormEncoder {
+    /// Encoding to use for `Array` values.
+    public enum ArrayEncoding {
+        /// An empty set of square brackets ("[]") are appended to the key for every value. This is the default encoding.
+        case brackets
+        /// No brackets are appended to the key and the key is encoded as is.
+        case noBrackets
+
+        /// Encodes the key according to the encoding.
+        ///
+        /// - Parameter key: The `key` to encode.
+        /// - Returns:       The encoded key.
+        func encode(_ key: String) -> String {
+            switch self {
+            case .brackets: return "\(key)[]"
+            case .noBrackets: return key
+            }
+        }
+    }
+
+    /// Encoding to use for `Bool` values.
+    public enum BoolEncoding {
+        /// Encodes `true` as `1`, `false` as `0`.
+        case numeric
+        /// Encodes `true` as "true", `false` as "false". This is the default encoding.
+        case literal
+
+        /// Encodes the given `Bool` as a `String`.
+        ///
+        /// - Parameter value: The `Bool` to encode.
+        ///
+        /// - Returns:         The encoded `String`.
+        func encode(_ value: Bool) -> String {
+            switch self {
+            case .numeric: return value ? "1" : "0"
+            case .literal: return value ? "true" : "false"
+            }
+        }
+    }
+
+    /// Encoding to use for `Data` values.
+    public enum DataEncoding {
+        /// Defers encoding to the `Data` type.
+        case deferredToData
+        /// Encodes `Data` as a Base64-encoded string. This is the default encoding.
+        case base64
+        /// Encode the `Data` as a custom value encoded by the given closure.
+        case custom((Data) throws -> String)
+
+        /// Encodes `Data` according to the encoding.
+        ///
+        /// - Parameter data: The `Data` to encode.
+        ///
+        /// - Returns:        The encoded `String`, or `nil` if the `Data` should be encoded according to its
+        ///                   `Encodable` implementation.
+        func encode(_ data: Data) throws -> String? {
+            switch self {
+            case .deferredToData: return nil
+            case .base64: return data.base64EncodedString()
+            case let .custom(encoding): return try encoding(data)
+            }
+        }
+    }
+
+    /// Encoding to use for `Date` values.
+    public enum DateEncoding {
+        /// ISO8601 and RFC3339 formatter.
+        private static let iso8601Formatter: ISO8601DateFormatter = {
+            let formatter = ISO8601DateFormatter()
+            formatter.formatOptions = .withInternetDateTime
+            return formatter
+        }()
+
+        /// Defers encoding to the `Date` type. This is the default encoding.
+        case deferredToDate
+        /// Encodes `Date`s as seconds since midnight UTC on January 1, 1970.
+        case secondsSince1970
+        /// Encodes `Date`s as milliseconds since midnight UTC on January 1, 1970.
+        case millisecondsSince1970
+        /// Encodes `Date`s according to the ISO8601 and RFC3339 standards.
+        case iso8601
+        /// Encodes `Date`s using the given `DateFormatter`.
+        case formatted(DateFormatter)
+        /// Encodes `Date`s using the given closure.
+        case custom((Date) throws -> String)
+
+        /// Encodes the date according to the encoding.
+        ///
+        /// - Parameter date: The `Date` to encode.
+        ///
+        /// - Returns:        The encoded `String`, or `nil` if the `Date` should be encoded according to its
+        ///                   `Encodable` implementation.
+        func encode(_ date: Date) throws -> String? {
+            switch self {
+            case .deferredToDate:
+                return nil
+            case .secondsSince1970:
+                return String(date.timeIntervalSince1970)
+            case .millisecondsSince1970:
+                return String(date.timeIntervalSince1970 * 1000.0)
+            case .iso8601:
+                return DateEncoding.iso8601Formatter.string(from: date)
+            case let .formatted(formatter):
+                return formatter.string(from: date)
+            case let .custom(closure):
+                return try closure(date)
+            }
+        }
+    }
+
+    /// Encoding to use for keys.
+    ///
+    /// This type is derived from [`JSONEncoder`'s `KeyEncodingStrategy`](https://github.com/apple/swift/blob/6aa313b8dd5f05135f7f878eccc1db6f9fbe34ff/stdlib/public/Darwin/Foundation/JSONEncoder.swift#L128)
+    /// and [`XMLEncoder`s `KeyEncodingStrategy`](https://github.com/MaxDesiatov/XMLCoder/blob/master/Sources/XMLCoder/Encoder/XMLEncoder.swift#L102).
+    public enum KeyEncoding {
+        /// Use the keys specified by each type. This is the default encoding.
+        case useDefaultKeys
+        /// Convert from "camelCaseKeys" to "snake_case_keys" before writing a key.
+        ///
+        /// Capital characters are determined by testing membership in
+        /// `CharacterSet.uppercaseLetters` and `CharacterSet.lowercaseLetters`
+        /// (Unicode General Categories Lu and Lt).
+        /// The conversion to lower case uses `Locale.system`, also known as
+        /// the ICU "root" locale. This means the result is consistent
+        /// regardless of the current user's locale and language preferences.
+        ///
+        /// Converting from camel case to snake case:
+        /// 1. Splits words at the boundary of lower-case to upper-case
+        /// 2. Inserts `_` between words
+        /// 3. Lowercases the entire string
+        /// 4. Preserves starting and ending `_`.
+        ///
+        /// For example, `oneTwoThree` becomes `one_two_three`. `_oneTwoThree_` becomes `_one_two_three_`.
+        ///
+        /// - Note: Using a key encoding strategy has a nominal performance cost, as each string key has to be converted.
+        case convertToSnakeCase
+        /// Same as convertToSnakeCase, but using `-` instead of `_`.
+        /// For example `oneTwoThree` becomes `one-two-three`.
+        case convertToKebabCase
+        /// Capitalize the first letter only.
+        /// For example `oneTwoThree` becomes  `OneTwoThree`.
+        case capitalized
+        /// Uppercase all letters.
+        /// For example `oneTwoThree` becomes  `ONETWOTHREE`.
+        case uppercased
+        /// Lowercase all letters.
+        /// For example `oneTwoThree` becomes  `onetwothree`.
+        case lowercased
+        /// A custom encoding using the provided closure.
+        case custom((String) -> String)
+
+        func encode(_ key: String) -> String {
+            switch self {
+            case .useDefaultKeys: return key
+            case .convertToSnakeCase: return convertToSnakeCase(key)
+            case .convertToKebabCase: return convertToKebabCase(key)
+            case .capitalized: return String(key.prefix(1).uppercased() + key.dropFirst())
+            case .uppercased: return key.uppercased()
+            case .lowercased: return key.lowercased()
+            case let .custom(encoding): return encoding(key)
+            }
+        }
+
+        private func convertToSnakeCase(_ key: String) -> String {
+            return convert(key, usingSeparator: "_")
+        }
+
+        private func convertToKebabCase(_ key: String) -> String {
+            return convert(key, usingSeparator: "-")
+        }
+
+        private func convert(_ key: String, usingSeparator separator: String) -> String {
+            guard !key.isEmpty else { return key }
+
+            var words: [Range<String.Index>] = []
+            // The general idea of this algorithm is to split words on
+            // transition from lower to upper case, then on transition of >1
+            // upper case characters to lowercase
+            //
+            // myProperty -> my_property
+            // myURLProperty -> my_url_property
+            //
+            // It is assumed, per Swift naming conventions, that the first character of the key is lowercase.
+            var wordStart = key.startIndex
+            var searchRange = key.index(after: wordStart)..<key.endIndex
+
+            // Find next uppercase character
+            while let upperCaseRange = key.rangeOfCharacter(from: CharacterSet.uppercaseLetters, options: [], range: searchRange) {
+                let untilUpperCase = wordStart..<upperCaseRange.lowerBound
+                words.append(untilUpperCase)
+
+                // Find next lowercase character
+                searchRange = upperCaseRange.lowerBound..<searchRange.upperBound
+                guard let lowerCaseRange = key.rangeOfCharacter(from: CharacterSet.lowercaseLetters, options: [], range: searchRange) else {
+                    // There are no more lower case letters. Just end here.
+                    wordStart = searchRange.lowerBound
+                    break
+                }
+
+                // Is the next lowercase letter more than 1 after the uppercase?
+                // If so, we encountered a group of uppercase letters that we
+                // should treat as its own word
+                let nextCharacterAfterCapital = key.index(after: upperCaseRange.lowerBound)
+                if lowerCaseRange.lowerBound == nextCharacterAfterCapital {
+                    // The next character after capital is a lower case character and therefore not a word boundary.
+                    // Continue searching for the next upper case for the boundary.
+                    wordStart = upperCaseRange.lowerBound
+                } else {
+                    // There was a range of >1 capital letters. Turn those into a word, stopping at the capital before the lower case character.
+                    let beforeLowerIndex = key.index(before: lowerCaseRange.lowerBound)
+                    words.append(upperCaseRange.lowerBound..<beforeLowerIndex)
+
+                    // Next word starts at the capital before the lowercase we just found
+                    wordStart = beforeLowerIndex
+                }
+                searchRange = lowerCaseRange.upperBound..<searchRange.upperBound
+            }
+            words.append(wordStart..<searchRange.upperBound)
+            let result = words.map { range in
+                key[range].lowercased()
+            }.joined(separator: separator)
+
+            return result
+        }
+    }
+
+    /// Encoding to use for spaces.
+    public enum SpaceEncoding {
+        /// Encodes spaces according to normal percent escaping rules (%20).
+        case percentEscaped
+        /// Encodes spaces as `+`,
+        case plusReplaced
+
+        /// Encodes the string according to the encoding.
+        ///
+        /// - Parameter string: The `String` to encode.
+        ///
+        /// - Returns:          The encoded `String`.
+        func encode(_ string: String) -> String {
+            switch self {
+            case .percentEscaped: return string.replacingOccurrences(of: " ", with: "%20")
+            case .plusReplaced: return string.replacingOccurrences(of: " ", with: "+")
+            }
+        }
+    }
+
+    /// `URLEncodedFormEncoder` error.
+    public enum Error: Swift.Error {
+        /// An invalid root object was created by the encoder. Only keyed values are valid.
+        case invalidRootObject(String)
+
+        var localizedDescription: String {
+            switch self {
+            case let .invalidRootObject(object):
+                return "URLEncodedFormEncoder requires keyed root object. Received \(object) instead."
+            }
+        }
+    }
+
+    /// Whether or not to sort the encoded key value pairs.
+    ///
+    /// - Note: This setting ensures a consistent ordering for all encodings of the same parameters. When set to `false`,
+    ///         encoded `Dictionary` values may have a different encoded order each time they're encoded due to
+    ///       ` Dictionary`'s random storage order, but `Encodable` types will maintain their encoded order.
+    public let alphabetizeKeyValuePairs: Bool
+    /// The `ArrayEncoding` to use.
+    public let arrayEncoding: ArrayEncoding
+    /// The `BoolEncoding` to use.
+    public let boolEncoding: BoolEncoding
+    /// THe `DataEncoding` to use.
+    public let dataEncoding: DataEncoding
+    /// The `DateEncoding` to use.
+    public let dateEncoding: DateEncoding
+    /// The `KeyEncoding` to use.
+    public let keyEncoding: KeyEncoding
+    /// The `SpaceEncoding` to use.
+    public let spaceEncoding: SpaceEncoding
+    /// The `CharacterSet` of allowed (non-escaped) characters.
+    public var allowedCharacters: CharacterSet
+
+    /// Creates an instance from the supplied parameters.
+    ///
+    /// - Parameters:
+    ///   - alphabetizeKeyValuePairs: Whether or not to sort the encoded key value pairs. `true` by default.
+    ///   - arrayEncoding:            The `ArrayEncoding` to use. `.brackets` by default.
+    ///   - boolEncoding:             The `BoolEncoding` to use. `.numeric` by default.
+    ///   - dataEncoding:             The `DataEncoding` to use. `.base64` by default.
+    ///   - dateEncoding:             The `DateEncoding` to use. `.deferredToDate` by default.
+    ///   - keyEncoding:              The `KeyEncoding` to use. `.useDefaultKeys` by default.
+    ///   - spaceEncoding:            The `SpaceEncoding` to use. `.percentEscaped` by default.
+    ///   - allowedCharacters:        The `CharacterSet` of allowed (non-escaped) characters. `.afURLQueryAllowed` by
+    ///                               default.
+    public init(alphabetizeKeyValuePairs: Bool = true,
+                arrayEncoding: ArrayEncoding = .brackets,
+                boolEncoding: BoolEncoding = .numeric,
+                dataEncoding: DataEncoding = .base64,
+                dateEncoding: DateEncoding = .deferredToDate,
+                keyEncoding: KeyEncoding = .useDefaultKeys,
+                spaceEncoding: SpaceEncoding = .percentEscaped,
+                allowedCharacters: CharacterSet = .afURLQueryAllowed) {
+        self.alphabetizeKeyValuePairs = alphabetizeKeyValuePairs
+        self.arrayEncoding = arrayEncoding
+        self.boolEncoding = boolEncoding
+        self.dataEncoding = dataEncoding
+        self.dateEncoding = dateEncoding
+        self.keyEncoding = keyEncoding
+        self.spaceEncoding = spaceEncoding
+        self.allowedCharacters = allowedCharacters
+    }
+
+    func encode(_ value: Encodable) throws -> URLEncodedFormComponent {
+        let context = URLEncodedFormContext(.object([]))
+        let encoder = _URLEncodedFormEncoder(context: context,
+                                             boolEncoding: boolEncoding,
+                                             dataEncoding: dataEncoding,
+                                             dateEncoding: dateEncoding)
+        try value.encode(to: encoder)
+
+        return context.component
+    }
+
+    /// Encodes the `value` as a URL form encoded `String`.
+    ///
+    /// - Parameter value: The `Encodable` value.`
+    ///
+    /// - Returns:         The encoded `String`.
+    /// - Throws:          An `Error` or `EncodingError` instance if encoding fails.
+    public func encode(_ value: Encodable) throws -> String {
+        let component: URLEncodedFormComponent = try encode(value)
+
+        guard case let .object(object) = component else {
+            throw Error.invalidRootObject("\(component)")
+        }
+
+        let serializer = URLEncodedFormSerializer(alphabetizeKeyValuePairs: alphabetizeKeyValuePairs,
+                                                  arrayEncoding: arrayEncoding,
+                                                  keyEncoding: keyEncoding,
+                                                  spaceEncoding: spaceEncoding,
+                                                  allowedCharacters: allowedCharacters)
+        let query = serializer.serialize(object)
+
+        return query
+    }
+
+    /// Encodes the value as `Data`. This is performed by first creating an encoded `String` and then returning the
+    /// `.utf8` data.
+    ///
+    /// - Parameter value: The `Encodable` value.
+    ///
+    /// - Returns:         The encoded `Data`.
+    ///
+    /// - Throws:          An `Error` or `EncodingError` instance if encoding fails.
+    public func encode(_ value: Encodable) throws -> Data {
+        let string: String = try encode(value)
+
+        return Data(string.utf8)
+    }
+}
+
+final class _URLEncodedFormEncoder {
+    var codingPath: [CodingKey]
+    // Returns an empty dictionary, as this encoder doesn't support userInfo.
+    var userInfo: [CodingUserInfoKey: Any] { return [:] }
+
+    let context: URLEncodedFormContext
+
+    private let boolEncoding: URLEncodedFormEncoder.BoolEncoding
+    private let dataEncoding: URLEncodedFormEncoder.DataEncoding
+    private let dateEncoding: URLEncodedFormEncoder.DateEncoding
+
+    public init(context: URLEncodedFormContext,
+                codingPath: [CodingKey] = [],
+                boolEncoding: URLEncodedFormEncoder.BoolEncoding,
+                dataEncoding: URLEncodedFormEncoder.DataEncoding,
+                dateEncoding: URLEncodedFormEncoder.DateEncoding) {
+        self.context = context
+        self.codingPath = codingPath
+        self.boolEncoding = boolEncoding
+        self.dataEncoding = dataEncoding
+        self.dateEncoding = dateEncoding
+    }
+}
+
+extension _URLEncodedFormEncoder: Encoder {
+    func container<Key>(keyedBy type: Key.Type) -> KeyedEncodingContainer<Key> where Key: CodingKey {
+        let container = _URLEncodedFormEncoder.KeyedContainer<Key>(context: context,
+                                                                   codingPath: codingPath,
+                                                                   boolEncoding: boolEncoding,
+                                                                   dataEncoding: dataEncoding,
+                                                                   dateEncoding: dateEncoding)
+        return KeyedEncodingContainer(container)
+    }
+
+    func unkeyedContainer() -> UnkeyedEncodingContainer {
+        return _URLEncodedFormEncoder.UnkeyedContainer(context: context,
+                                                       codingPath: codingPath,
+                                                       boolEncoding: boolEncoding,
+                                                       dataEncoding: dataEncoding,
+                                                       dateEncoding: dateEncoding)
+    }
+
+    func singleValueContainer() -> SingleValueEncodingContainer {
+        return _URLEncodedFormEncoder.SingleValueContainer(context: context,
+                                                           codingPath: codingPath,
+                                                           boolEncoding: boolEncoding,
+                                                           dataEncoding: dataEncoding,
+                                                           dateEncoding: dateEncoding)
+    }
+}
+
+final class URLEncodedFormContext {
+    var component: URLEncodedFormComponent
+
+    init(_ component: URLEncodedFormComponent) {
+        self.component = component
+    }
+}
+
+enum URLEncodedFormComponent {
+    typealias Object = [(key: String, value: URLEncodedFormComponent)]
+
+    case string(String)
+    case array([URLEncodedFormComponent])
+    case object(Object)
+
+    /// Converts self to an `[URLEncodedFormData]` or returns `nil` if not convertible.
+    var array: [URLEncodedFormComponent]? {
+        switch self {
+        case let .array(array): return array
+        default: return nil
+        }
+    }
+
+    /// Converts self to an `Object` or returns `nil` if not convertible.
+    var object: Object? {
+        switch self {
+        case let .object(object): return object
+        default: return nil
+        }
+    }
+
+    /// Sets self to the supplied value at a given path.
+    ///
+    ///     data.set(to: "hello", at: ["path", "to", "value"])
+    ///
+    /// - parameters:
+    ///     - value: Value of `Self` to set at the supplied path.
+    ///     - path: `CodingKey` path to update with the supplied value.
+    public mutating func set(to value: URLEncodedFormComponent, at path: [CodingKey]) {
+        set(&self, to: value, at: path)
+    }
+
+    /// Recursive backing method to `set(to:at:)`.
+    private func set(_ context: inout URLEncodedFormComponent, to value: URLEncodedFormComponent, at path: [CodingKey]) {
+        guard path.count >= 1 else {
+            context = value
+            return
+        }
+
+        let end = path[0]
+        var child: URLEncodedFormComponent
+        switch path.count {
+        case 1:
+            child = value
+        case 2...:
+            if let index = end.intValue {
+                let array = context.array ?? []
+                if array.count > index {
+                    child = array[index]
+                } else {
+                    child = .array([])
+                }
+                set(&child, to: value, at: Array(path[1...]))
+            } else {
+                child = context.object?.first { $0.key == end.stringValue }?.value ?? .object(.init())
+                set(&child, to: value, at: Array(path[1...]))
+            }
+        default: fatalError("Unreachable")
+        }
+
+        if let index = end.intValue {
+            if var array = context.array {
+                if array.count > index {
+                    array[index] = child
+                } else {
+                    array.append(child)
+                }
+                context = .array(array)
+            } else {
+                context = .array([child])
+            }
+        } else {
+            if var object = context.object {
+                if let index = object.firstIndex(where: { $0.key == end.stringValue }) {
+                    object[index] = (key: end.stringValue, value: child)
+                } else {
+                    object.append((key: end.stringValue, value: child))
+                }
+                context = .object(object)
+            } else {
+                context = .object([(key: end.stringValue, value: child)])
+            }
+        }
+    }
+}
+
+struct AnyCodingKey: CodingKey, Hashable {
+    let stringValue: String
+    let intValue: Int?
+
+    init?(stringValue: String) {
+        self.stringValue = stringValue
+        intValue = nil
+    }
+
+    init?(intValue: Int) {
+        stringValue = "\(intValue)"
+        self.intValue = intValue
+    }
+
+    init<Key>(_ base: Key) where Key: CodingKey {
+        if let intValue = base.intValue {
+            self.init(intValue: intValue)!
+        } else {
+            self.init(stringValue: base.stringValue)!
+        }
+    }
+}
+
+extension _URLEncodedFormEncoder {
+    final class KeyedContainer<Key> where Key: CodingKey {
+        var codingPath: [CodingKey]
+
+        private let context: URLEncodedFormContext
+        private let boolEncoding: URLEncodedFormEncoder.BoolEncoding
+        private let dataEncoding: URLEncodedFormEncoder.DataEncoding
+        private let dateEncoding: URLEncodedFormEncoder.DateEncoding
+
+        init(context: URLEncodedFormContext,
+             codingPath: [CodingKey],
+             boolEncoding: URLEncodedFormEncoder.BoolEncoding,
+             dataEncoding: URLEncodedFormEncoder.DataEncoding,
+             dateEncoding: URLEncodedFormEncoder.DateEncoding) {
+            self.context = context
+            self.codingPath = codingPath
+            self.boolEncoding = boolEncoding
+            self.dataEncoding = dataEncoding
+            self.dateEncoding = dateEncoding
+        }
+
+        private func nestedCodingPath(for key: CodingKey) -> [CodingKey] {
+            return codingPath + [key]
+        }
+    }
+}
+
+extension _URLEncodedFormEncoder.KeyedContainer: KeyedEncodingContainerProtocol {
+    func encodeNil(forKey key: Key) throws {
+        let context = EncodingError.Context(codingPath: codingPath,
+                                            debugDescription: "URLEncodedFormEncoder cannot encode nil values.")
+        throw EncodingError.invalidValue("\(key): nil", context)
+    }
+
+    func encode<T>(_ value: T, forKey key: Key) throws where T: Encodable {
+        var container = nestedSingleValueEncoder(for: key)
+        try container.encode(value)
+    }
+
+    func nestedSingleValueEncoder(for key: Key) -> SingleValueEncodingContainer {
+        let container = _URLEncodedFormEncoder.SingleValueContainer(context: context,
+                                                                    codingPath: nestedCodingPath(for: key),
+                                                                    boolEncoding: boolEncoding,
+                                                                    dataEncoding: dataEncoding,
+                                                                    dateEncoding: dateEncoding)
+
+        return container
+    }
+
+    func nestedUnkeyedContainer(forKey key: Key) -> UnkeyedEncodingContainer {
+        let container = _URLEncodedFormEncoder.UnkeyedContainer(context: context,
+                                                                codingPath: nestedCodingPath(for: key),
+                                                                boolEncoding: boolEncoding,
+                                                                dataEncoding: dataEncoding,
+                                                                dateEncoding: dateEncoding)
+
+        return container
+    }
+
+    func nestedContainer<NestedKey>(keyedBy keyType: NestedKey.Type, forKey key: Key) -> KeyedEncodingContainer<NestedKey> where NestedKey: CodingKey {
+        let container = _URLEncodedFormEncoder.KeyedContainer<NestedKey>(context: context,
+                                                                         codingPath: nestedCodingPath(for: key),
+                                                                         boolEncoding: boolEncoding,
+                                                                         dataEncoding: dataEncoding,
+                                                                         dateEncoding: dateEncoding)
+
+        return KeyedEncodingContainer(container)
+    }
+
+    func superEncoder() -> Encoder {
+        return _URLEncodedFormEncoder(context: context,
+                                      codingPath: codingPath,
+                                      boolEncoding: boolEncoding,
+                                      dataEncoding: dataEncoding,
+                                      dateEncoding: dateEncoding)
+    }
+
+    func superEncoder(forKey key: Key) -> Encoder {
+        return _URLEncodedFormEncoder(context: context,
+                                      codingPath: nestedCodingPath(for: key),
+                                      boolEncoding: boolEncoding,
+                                      dataEncoding: dataEncoding,
+                                      dateEncoding: dateEncoding)
+    }
+}
+
+extension _URLEncodedFormEncoder {
+    final class SingleValueContainer {
+        var codingPath: [CodingKey]
+
+        private var canEncodeNewValue = true
+
+        private let context: URLEncodedFormContext
+        private let boolEncoding: URLEncodedFormEncoder.BoolEncoding
+        private let dataEncoding: URLEncodedFormEncoder.DataEncoding
+        private let dateEncoding: URLEncodedFormEncoder.DateEncoding
+
+        init(context: URLEncodedFormContext,
+             codingPath: [CodingKey],
+             boolEncoding: URLEncodedFormEncoder.BoolEncoding,
+             dataEncoding: URLEncodedFormEncoder.DataEncoding,
+             dateEncoding: URLEncodedFormEncoder.DateEncoding) {
+            self.context = context
+            self.codingPath = codingPath
+            self.boolEncoding = boolEncoding
+            self.dataEncoding = dataEncoding
+            self.dateEncoding = dateEncoding
+        }
+
+        private func checkCanEncode(value: Any?) throws {
+            guard canEncodeNewValue else {
+                let context = EncodingError.Context(codingPath: codingPath,
+                                                    debugDescription: "Attempt to encode value through single value container when previously value already encoded.")
+                throw EncodingError.invalidValue(value as Any, context)
+            }
+        }
+    }
+}
+
+extension _URLEncodedFormEncoder.SingleValueContainer: SingleValueEncodingContainer {
+    func encodeNil() throws {
+        try checkCanEncode(value: nil)
+        defer { canEncodeNewValue = false }
+
+        let context = EncodingError.Context(codingPath: codingPath,
+                                            debugDescription: "URLEncodedFormEncoder cannot encode nil values.")
+        throw EncodingError.invalidValue("nil", context)
+    }
+
+    func encode(_ value: Bool) throws {
+        try encode(value, as: String(boolEncoding.encode(value)))
+    }
+
+    func encode(_ value: String) throws {
+        try encode(value, as: value)
+    }
+
+    func encode(_ value: Double) throws {
+        try encode(value, as: String(value))
+    }
+
+    func encode(_ value: Float) throws {
+        try encode(value, as: String(value))
+    }
+
+    func encode(_ value: Int) throws {
+        try encode(value, as: String(value))
+    }
+
+    func encode(_ value: Int8) throws {
+        try encode(value, as: String(value))
+    }
+
+    func encode(_ value: Int16) throws {
+        try encode(value, as: String(value))
+    }
+
+    func encode(_ value: Int32) throws {
+        try encode(value, as: String(value))
+    }
+
+    func encode(_ value: Int64) throws {
+        try encode(value, as: String(value))
+    }
+
+    func encode(_ value: UInt) throws {
+        try encode(value, as: String(value))
+    }
+
+    func encode(_ value: UInt8) throws {
+        try encode(value, as: String(value))
+    }
+
+    func encode(_ value: UInt16) throws {
+        try encode(value, as: String(value))
+    }
+
+    func encode(_ value: UInt32) throws {
+        try encode(value, as: String(value))
+    }
+
+    func encode(_ value: UInt64) throws {
+        try encode(value, as: String(value))
+    }
+
+    private func encode<T>(_ value: T, as string: String) throws where T: Encodable {
+        try checkCanEncode(value: value)
+        defer { canEncodeNewValue = false }
+
+        context.component.set(to: .string(string), at: codingPath)
+    }
+
+    func encode<T>(_ value: T) throws where T: Encodable {
+        switch value {
+        case let date as Date:
+            guard let string = try dateEncoding.encode(date) else {
+                try attemptToEncode(value)
+                return
+            }
+
+            try encode(value, as: string)
+        case let data as Data:
+            guard let string = try dataEncoding.encode(data) else {
+                try attemptToEncode(value)
+                return
+            }
+
+            try encode(value, as: string)
+        default:
+            try attemptToEncode(value)
+        }
+    }
+
+    private func attemptToEncode<T>(_ value: T) throws where T: Encodable {
+        try checkCanEncode(value: value)
+        defer { canEncodeNewValue = false }
+
+        let encoder = _URLEncodedFormEncoder(context: context,
+                                             codingPath: codingPath,
+                                             boolEncoding: boolEncoding,
+                                             dataEncoding: dataEncoding,
+                                             dateEncoding: dateEncoding)
+        try value.encode(to: encoder)
+    }
+}
+
+extension _URLEncodedFormEncoder {
+    final class UnkeyedContainer {
+        var codingPath: [CodingKey]
+
+        var count = 0
+        var nestedCodingPath: [CodingKey] {
+            return codingPath + [AnyCodingKey(intValue: count)!]
+        }
+
+        private let context: URLEncodedFormContext
+        private let boolEncoding: URLEncodedFormEncoder.BoolEncoding
+        private let dataEncoding: URLEncodedFormEncoder.DataEncoding
+        private let dateEncoding: URLEncodedFormEncoder.DateEncoding
+
+        init(context: URLEncodedFormContext,
+             codingPath: [CodingKey],
+             boolEncoding: URLEncodedFormEncoder.BoolEncoding,
+             dataEncoding: URLEncodedFormEncoder.DataEncoding,
+             dateEncoding: URLEncodedFormEncoder.DateEncoding) {
+            self.context = context
+            self.codingPath = codingPath
+            self.boolEncoding = boolEncoding
+            self.dataEncoding = dataEncoding
+            self.dateEncoding = dateEncoding
+        }
+    }
+}
+
+extension _URLEncodedFormEncoder.UnkeyedContainer: UnkeyedEncodingContainer {
+    func encodeNil() throws {
+        let context = EncodingError.Context(codingPath: codingPath,
+                                            debugDescription: "URLEncodedFormEncoder cannot encode nil values.")
+        throw EncodingError.invalidValue("nil", context)
+    }
+
+    func encode<T>(_ value: T) throws where T: Encodable {
+        var container = nestedSingleValueContainer()
+        try container.encode(value)
+    }
+
+    func nestedSingleValueContainer() -> SingleValueEncodingContainer {
+        defer { count += 1 }
+
+        return _URLEncodedFormEncoder.SingleValueContainer(context: context,
+                                                           codingPath: nestedCodingPath,
+                                                           boolEncoding: boolEncoding,
+                                                           dataEncoding: dataEncoding,
+                                                           dateEncoding: dateEncoding)
+    }
+
+    func nestedContainer<NestedKey>(keyedBy keyType: NestedKey.Type) -> KeyedEncodingContainer<NestedKey> where NestedKey: CodingKey {
+        defer { count += 1 }
+        let container = _URLEncodedFormEncoder.KeyedContainer<NestedKey>(context: context,
+                                                                         codingPath: nestedCodingPath,
+                                                                         boolEncoding: boolEncoding,
+                                                                         dataEncoding: dataEncoding,
+                                                                         dateEncoding: dateEncoding)
+
+        return KeyedEncodingContainer(container)
+    }
+
+    func nestedUnkeyedContainer() -> UnkeyedEncodingContainer {
+        defer { count += 1 }
+
+        return _URLEncodedFormEncoder.UnkeyedContainer(context: context,
+                                                       codingPath: nestedCodingPath,
+                                                       boolEncoding: boolEncoding,
+                                                       dataEncoding: dataEncoding,
+                                                       dateEncoding: dateEncoding)
+    }
+
+    func superEncoder() -> Encoder {
+        defer { count += 1 }
+
+        return _URLEncodedFormEncoder(context: context,
+                                      codingPath: codingPath,
+                                      boolEncoding: boolEncoding,
+                                      dataEncoding: dataEncoding,
+                                      dateEncoding: dateEncoding)
+    }
+}
+
+final class URLEncodedFormSerializer {
+    private let alphabetizeKeyValuePairs: Bool
+    private let arrayEncoding: URLEncodedFormEncoder.ArrayEncoding
+    private let keyEncoding: URLEncodedFormEncoder.KeyEncoding
+    private let spaceEncoding: URLEncodedFormEncoder.SpaceEncoding
+    private let allowedCharacters: CharacterSet
+
+    init(alphabetizeKeyValuePairs: Bool,
+         arrayEncoding: URLEncodedFormEncoder.ArrayEncoding,
+         keyEncoding: URLEncodedFormEncoder.KeyEncoding,
+         spaceEncoding: URLEncodedFormEncoder.SpaceEncoding,
+         allowedCharacters: CharacterSet) {
+        self.alphabetizeKeyValuePairs = alphabetizeKeyValuePairs
+        self.arrayEncoding = arrayEncoding
+        self.keyEncoding = keyEncoding
+        self.spaceEncoding = spaceEncoding
+        self.allowedCharacters = allowedCharacters
+    }
+
+    func serialize(_ object: URLEncodedFormComponent.Object) -> String {
+        var output: [String] = []
+        for (key, component) in object {
+            let value = serialize(component, forKey: key)
+            output.append(value)
+        }
+        output = alphabetizeKeyValuePairs ? output.sorted() : output
+
+        return output.joinedWithAmpersands()
+    }
+
+    func serialize(_ component: URLEncodedFormComponent, forKey key: String) -> String {
+        switch component {
+        case let .string(string): return "\(escape(keyEncoding.encode(key)))=\(escape(string))"
+        case let .array(array): return serialize(array, forKey: key)
+        case let .object(object): return serialize(object, forKey: key)
+        }
+    }
+
+    func serialize(_ object: URLEncodedFormComponent.Object, forKey key: String) -> String {
+        var segments: [String] = object.map { subKey, value in
+            let keyPath = "[\(subKey)]"
+            return serialize(value, forKey: key + keyPath)
+        }
+        segments = alphabetizeKeyValuePairs ? segments.sorted() : segments
+
+        return segments.joinedWithAmpersands()
+    }
+
+    func serialize(_ array: [URLEncodedFormComponent], forKey key: String) -> String {
+        var segments: [String] = array.map { component in
+            let keyPath = arrayEncoding.encode(key)
+            return serialize(component, forKey: keyPath)
+        }
+        segments = alphabetizeKeyValuePairs ? segments.sorted() : segments
+
+        return segments.joinedWithAmpersands()
+    }
+
+    func escape(_ query: String) -> String {
+        var allowedCharactersWithSpace = allowedCharacters
+        allowedCharactersWithSpace.insert(charactersIn: " ")
+        let escapedQuery = query.addingPercentEncoding(withAllowedCharacters: allowedCharactersWithSpace) ?? query
+        let spaceEncodedQuery = spaceEncoding.encode(escapedQuery)
+
+        return spaceEncodedQuery
+    }
+}
+
+extension Array where Element == String {
+    func joinedWithAmpersands() -> String {
+        return joined(separator: "&")
+    }
+}
+
+public extension CharacterSet {
+    /// Creates a CharacterSet from RFC 3986 allowed characters.
+    ///
+    /// RFC 3986 states that the following characters are "reserved" characters.
+    ///
+    /// - General Delimiters: ":", "#", "[", "]", "@", "?", "/"
+    /// - Sub-Delimiters: "!", "$", "&", "'", "(", ")", "*", "+", ",", ";", "="
+    ///
+    /// In RFC 3986 - Section 3.4, it states that the "?" and "/" characters should not be escaped to allow
+    /// query strings to include a URL. Therefore, all "reserved" characters with the exception of "?" and "/"
+    /// should be percent-escaped in the query string.
+    static let afURLQueryAllowed: CharacterSet = {
+        let generalDelimitersToEncode = ":#[]@" // does not include "?" or "/" due to RFC 3986 - Section 3.4
+        let subDelimitersToEncode = "!$&'()*+,;="
+        let encodableDelimiters = CharacterSet(charactersIn: "\(generalDelimitersToEncode)\(subDelimitersToEncode)")
+
+        return CharacterSet.urlQueryAllowed.subtracting(encodableDelimiters)
+    }()
+}

trolley/Pods/Alamofire/Source/URLRequest+Alamofire.swift

@@ -0,0 +1,39 @@
+//
+//  URLRequest+Alamofire.swift
+//
+//  Copyright (c) 2019 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+public extension URLRequest {
+    /// Returns the `httpMethod` as Alamofire's `HTTPMethod` type.
+    var method: HTTPMethod? {
+        get { return httpMethod.flatMap(HTTPMethod.init) }
+        set { httpMethod = newValue?.rawValue }
+    }
+
+    func validate() throws {
+        if method == .get, let bodyData = httpBody {
+            throw AFError.urlRequestValidationFailed(reason: .bodyDataInGETRequest(bodyData))
+        }
+    }
+}

trolley/Pods/Alamofire/Source/URLSessionConfiguration+Alamofire.swift

@@ -0,0 +1,37 @@
+//
+//  URLSessionConfiguration+Alamofire.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+extension URLSessionConfiguration: AlamofireExtended {}
+extension AlamofireExtension where ExtendedType: URLSessionConfiguration {
+    /// Alamofire's default configuration. Same as `URLSessionConfiguration.default` but adds Alamofire default
+    /// `Accept-Language`, `Accept-Encoding`, and `User-Agent` headers.
+    public static var `default`: URLSessionConfiguration {
+        let configuration = URLSessionConfiguration.default
+        configuration.headers = .default
+
+        return configuration
+    }
+}

trolley/Pods/Alamofire/Source/Validation.swift

@@ -0,0 +1,247 @@
+//
+//  Validation.swift
+//
+//  Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+import Foundation
+
+extension Request {
+    // MARK: Helper Types
+
+    fileprivate typealias ErrorReason = AFError.ResponseValidationFailureReason
+
+    /// Used to represent whether a validation succeeded or failed.
+    public typealias ValidationResult = Result<Void, Error>
+
+    fileprivate struct MIMEType {
+        let type: String
+        let subtype: String
+
+        var isWildcard: Bool { return type == "*" && subtype == "*" }
+
+        init?(_ string: String) {
+            let components: [String] = {
+                let stripped = string.trimmingCharacters(in: .whitespacesAndNewlines)
+                let split = stripped[..<(stripped.range(of: ";")?.lowerBound ?? stripped.endIndex)]
+
+                return split.components(separatedBy: "/")
+            }()
+
+            if let type = components.first, let subtype = components.last {
+                self.type = type
+                self.subtype = subtype
+            } else {
+                return nil
+            }
+        }
+
+        func matches(_ mime: MIMEType) -> Bool {
+            switch (type, subtype) {
+            case (mime.type, mime.subtype), (mime.type, "*"), ("*", mime.subtype), ("*", "*"):
+                return true
+            default:
+                return false
+            }
+        }
+    }
+
+    // MARK: Properties
+
+    fileprivate var acceptableStatusCodes: Range<Int> { return 200..<300 }
+
+    fileprivate var acceptableContentTypes: [String] {
+        if let accept = request?.value(forHTTPHeaderField: "Accept") {
+            return accept.components(separatedBy: ",")
+        }
+
+        return ["*/*"]
+    }
+
+    // MARK: Status Code
+
+    fileprivate func validate<S: Sequence>(statusCode acceptableStatusCodes: S,
+                                           response: HTTPURLResponse)
+        -> ValidationResult
+        where S.Iterator.Element == Int {
+        if acceptableStatusCodes.contains(response.statusCode) {
+            return .success(Void())
+        } else {
+            let reason: ErrorReason = .unacceptableStatusCode(code: response.statusCode)
+            return .failure(AFError.responseValidationFailed(reason: reason))
+        }
+    }
+
+    // MARK: Content Type
+
+    fileprivate func validate<S: Sequence>(contentType acceptableContentTypes: S,
+                                           response: HTTPURLResponse,
+                                           data: Data?)
+        -> ValidationResult
+        where S.Iterator.Element == String {
+        guard let data = data, data.count > 0 else { return .success(Void()) }
+
+        guard
+            let responseContentType = response.mimeType,
+            let responseMIMEType = MIMEType(responseContentType)
+        else {
+            for contentType in acceptableContentTypes {
+                if let mimeType = MIMEType(contentType), mimeType.isWildcard {
+                    return .success(Void())
+                }
+            }
+
+            let error: AFError = {
+                let reason: ErrorReason = .missingContentType(acceptableContentTypes: Array(acceptableContentTypes))
+                return AFError.responseValidationFailed(reason: reason)
+            }()
+
+            return .failure(error)
+        }
+
+        for contentType in acceptableContentTypes {
+            if let acceptableMIMEType = MIMEType(contentType), acceptableMIMEType.matches(responseMIMEType) {
+                return .success(Void())
+            }
+        }
+
+        let error: AFError = {
+            let reason: ErrorReason = .unacceptableContentType(acceptableContentTypes: Array(acceptableContentTypes),
+                                                               responseContentType: responseContentType)
+
+            return AFError.responseValidationFailed(reason: reason)
+        }()
+
+        return .failure(error)
+    }
+}
+
+// MARK: -
+
+extension DataRequest {
+    /// A closure used to validate a request that takes a URL request, a URL response and data, and returns whether the
+    /// request was valid.
+    public typealias Validation = (URLRequest?, HTTPURLResponse, Data?) -> ValidationResult
+
+    /// Validates that the response has a status code in the specified sequence.
+    ///
+    /// If validation fails, subsequent calls to response handlers will have an associated error.
+    ///
+    /// - parameter range: The range of acceptable status codes.
+    ///
+    /// - returns: The request.
+    @discardableResult
+    public func validate<S: Sequence>(statusCode acceptableStatusCodes: S) -> Self where S.Iterator.Element == Int {
+        return validate { [unowned self] _, response, _ in
+            self.validate(statusCode: acceptableStatusCodes, response: response)
+        }
+    }
+
+    /// Validates that the response has a content type in the specified sequence.
+    ///
+    /// If validation fails, subsequent calls to response handlers will have an associated error.
+    ///
+    /// - parameter contentType: The acceptable content types, which may specify wildcard types and/or subtypes.
+    ///
+    /// - returns: The request.
+    @discardableResult
+    public func validate<S: Sequence>(contentType acceptableContentTypes: @escaping @autoclosure () -> S) -> Self where S.Iterator.Element == String {
+        return validate { [unowned self] _, response, data in
+            self.validate(contentType: acceptableContentTypes(), response: response, data: data)
+        }
+    }
+
+    /// Validates that the response has a status code in the default acceptable range of 200...299, and that the content
+    /// type matches any specified in the Accept HTTP header field.
+    ///
+    /// If validation fails, subsequent calls to response handlers will have an associated error.
+    ///
+    /// - returns: The request.
+    @discardableResult
+    public func validate() -> Self {
+        let contentTypes: () -> [String] = { [unowned self] in
+            self.acceptableContentTypes
+        }
+        return validate(statusCode: acceptableStatusCodes).validate(contentType: contentTypes())
+    }
+}
+
+// MARK: -
+
+extension DownloadRequest {
+    /// A closure used to validate a request that takes a URL request, a URL response, a temporary URL and a
+    /// destination URL, and returns whether the request was valid.
+    public typealias Validation = (_ request: URLRequest?,
+                                   _ response: HTTPURLResponse,
+                                   _ fileURL: URL?)
+        -> ValidationResult
+
+    /// Validates that the response has a status code in the specified sequence.
+    ///
+    /// If validation fails, subsequent calls to response handlers will have an associated error.
+    ///
+    /// - parameter range: The range of acceptable status codes.
+    ///
+    /// - returns: The request.
+    @discardableResult
+    public func validate<S: Sequence>(statusCode acceptableStatusCodes: S) -> Self where S.Iterator.Element == Int {
+        return validate { [unowned self] _, response, _ in
+            self.validate(statusCode: acceptableStatusCodes, response: response)
+        }
+    }
+
+    /// Validates that the response has a content type in the specified sequence.
+    ///
+    /// If validation fails, subsequent calls to response handlers will have an associated error.
+    ///
+    /// - parameter contentType: The acceptable content types, which may specify wildcard types and/or subtypes.
+    ///
+    /// - returns: The request.
+    @discardableResult
+    public func validate<S: Sequence>(contentType acceptableContentTypes: @escaping @autoclosure () -> S) -> Self where S.Iterator.Element == String {
+        return validate { [unowned self] _, response, fileURL in
+            guard let validFileURL = fileURL else {
+                return .failure(AFError.responseValidationFailed(reason: .dataFileNil))
+            }
+
+            do {
+                let data = try Data(contentsOf: validFileURL)
+                return self.validate(contentType: acceptableContentTypes(), response: response, data: data)
+            } catch {
+                return .failure(AFError.responseValidationFailed(reason: .dataFileReadFailed(at: validFileURL)))
+            }
+        }
+    }
+
+    /// Validates that the response has a status code in the default acceptable range of 200...299, and that the content
+    /// type matches any specified in the Accept HTTP header field.
+    ///
+    /// If validation fails, subsequent calls to response handlers will have an associated error.
+    ///
+    /// - returns: The request.
+    @discardableResult
+    public func validate() -> Self {
+        let contentTypes = { [unowned self] in
+            self.acceptableContentTypes
+        }
+        return validate(statusCode: acceptableStatusCodes).validate(contentType: contentTypes())
+    }
+}

trolley/Pods/Manifest.lock

@@ -0,0 +1,20 @@
+PODS:
+  - Alamofire (5.0.0-rc.3)
+  - SwiftyJSON (4.3.0)
+
+DEPENDENCIES:
+  - Alamofire (~> 5.0.0-rc.3)
+  - SwiftyJSON (~> 4.0)
+
+SPEC REPOS:
+  trunk:
+    - Alamofire
+    - SwiftyJSON
+
+SPEC CHECKSUMS:
+  Alamofire: ca8c0de6906873be89d6deec5c8de279e00bf872
+  SwiftyJSON: 6faa0040f8b59dead0ee07436cbf76b73c08fd08
+
+PODFILE CHECKSUM: bbeb87e6f37761e96d8e2b35e3bf81e6aa0f8a7f
+
+COCOAPODS: 1.8.4

trolley/Pods/Pods.xcodeproj/project.pbxproj

@@ -0,0 +1,917 @@
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trolley/Pods/Pods.xcodeproj/xcuserdata/stephanie.marie.xcuserdatad/xcschemes/Pods-Trolley App.xcscheme

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trolley/Pods/Pods.xcodeproj/xcuserdata/stephaniem.ramos.xcuserdatad/xcschemes/Pods-Trolley App.xcscheme

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trolley/Pods/SwiftyJSON/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2017 Ruoyu Fu
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

trolley/Pods/SwiftyJSON/README.md

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+# SwiftyJSON
+
+[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage) ![CocoaPods](https://img.shields.io/cocoapods/v/SwiftyJSON.svg) ![Platform](https://img.shields.io/badge/platforms-iOS%208.0%20%7C%20macOS%2010.10%20%7C%20tvOS%209.0%20%7C%20watchOS%203.0-F28D00.svg) [![Reviewed by Hound](https://img.shields.io/badge/Reviewed_by-Hound-8E64B0.svg)](https://houndci.com)
+
+SwiftyJSON makes it easy to deal with JSON data in Swift.
+
+Platform | Build Status
+---------| --------------| 
+*OS      | [![Travis CI](https://travis-ci.org/SwiftyJSON/SwiftyJSON.svg?branch=master)](https://travis-ci.org/SwiftyJSON/SwiftyJSON)    | 
+[Linux](https://github.com/IBM-Swift/SwiftyJSON)      | [![Build Status](https://travis-ci.org/IBM-Swift/SwiftyJSON.svg?branch=master)](https://travis-ci.org/IBM-Swift/SwiftyJSON)     | 
+
+
+1. [Why is the typical JSON handling in Swift NOT good](#why-is-the-typical-json-handling-in-swift-not-good)
+2. [Requirements](#requirements)
+3. [Integration](#integration)
+4. [Usage](#usage)
+   - [Initialization](#initialization)
+   - [Subscript](#subscript)
+   - [Loop](#loop)
+   - [Error](#error)
+   - [Optional getter](#optional-getter)
+   - [Non-optional getter](#non-optional-getter)
+   - [Setter](#setter)
+   - [Raw object](#raw-object)
+   - [Literal convertibles](#literal-convertibles)
+   - [Merging](#merging)
+5. [Work with Alamofire](#work-with-alamofire)
+6. [Work with Moya](#work-with-moya)
+7. [SwiftyJSON Model Generator](#swiftyjson-model-generator)
+
+> [中文介绍](http://tangplin.github.io/swiftyjson/)
+
+
+## Why is the typical JSON handling in Swift NOT good?
+
+Swift is very strict about types. But although explicit typing is good for saving us from mistakes, it becomes painful when dealing with JSON and other areas that are, by nature, implicit about types.
+
+Take the Twitter API for example. Say we want to retrieve a user's "name" value of some tweet in Swift (according to [Twitter's API](https://developer.twitter.com/en/docs/tweets/timelines/api-reference/get-statuses-home_timeline)).
+
+The code would look like this:
+
+```swift
+if let statusesArray = try? JSONSerialization.jsonObject(with: data, options: .allowFragments) as? [[String: Any]],
+    let user = statusesArray[0]["user"] as? [String: Any],
+    let username = user["name"] as? String {
+    // Finally we got the username
+}
+```
+
+It's not good.
+
+Even if we use optional chaining, it would be messy:
+
+```swift
+if let JSONObject = try JSONSerialization.jsonObject(with: data, options: .allowFragments) as? [[String: Any]],
+    let username = (JSONObject[0]["user"] as? [String: Any])?["name"] as? String {
+        // There's our username
+}
+```
+
+An unreadable mess--for something that should really be simple!
+
+With SwiftyJSON all you have to do is:
+
+```swift
+let json = JSON(data: dataFromNetworking)
+if let userName = json[0]["user"]["name"].string {
+  //Now you got your value
+}
+```
+
+And don't worry about the Optional Wrapping thing. It's done for you automatically.
+
+```swift
+let json = JSON(data: dataFromNetworking)
+let result = json[999999]["wrong_key"]["wrong_name"]
+if let userName = result.string {
+    //Calm down, take it easy, the ".string" property still produces the correct Optional String type with safety
+} else {
+    //Print the error
+    print(result.error)
+}
+```
+
+## Requirements
+
+- iOS 8.0+ | macOS 10.10+ | tvOS 9.0+ | watchOS 2.0+
+- Xcode 8
+
+## Integration
+
+#### CocoaPods (iOS 8+, OS X 10.9+)
+
+You can use [CocoaPods](http://cocoapods.org/) to install `SwiftyJSON` by adding it to your `Podfile`:
+
+```ruby
+platform :ios, '8.0'
+use_frameworks!
+
+target 'MyApp' do
+    pod 'SwiftyJSON', '~> 4.0'
+end
+```
+
+#### Carthage (iOS 8+, OS X 10.9+)
+
+You can use [Carthage](https://github.com/Carthage/Carthage) to install `SwiftyJSON` by adding it to your `Cartfile`:
+
+```
+github "SwiftyJSON/SwiftyJSON" ~> 4.0
+```
+
+If you use Carthage to build your dependencies, make sure you have added `SwiftyJSON.framework` to the "Linked Frameworks and Libraries" section of your target, and have included them in your Carthage framework copying build phase.
+
+#### Swift Package Manager
+
+You can use [The Swift Package Manager](https://swift.org/package-manager) to install `SwiftyJSON` by adding the proper description to your `Package.swift` file:
+
+```swift
+// swift-tools-version:4.0
+import PackageDescription
+
+let package = Package(
+    name: "YOUR_PROJECT_NAME",
+    dependencies: [
+        .package(url: "https://github.com/SwiftyJSON/SwiftyJSON.git", from: "4.0.0"),
+    ]
+)
+```
+Then run `swift build` whenever you get prepared.
+
+#### Manually (iOS 7+, OS X 10.9+)
+
+To use this library in your project manually you may:  
+
+1. for Projects, just drag SwiftyJSON.swift to the project tree
+2. for Workspaces, include the whole SwiftyJSON.xcodeproj
+
+## Usage
+
+#### Initialization
+
+```swift
+import SwiftyJSON
+```
+
+```swift
+let json = JSON(data: dataFromNetworking)
+```
+Or
+
+```swift
+let json = JSON(jsonObject)
+```
+Or
+
+```swift
+if let dataFromString = jsonString.data(using: .utf8, allowLossyConversion: false) {
+    let json = JSON(data: dataFromString)
+}
+```
+
+#### Subscript
+
+```swift
+// Getting a double from a JSON Array
+let name = json[0].double
+```
+
+```swift
+// Getting an array of string from a JSON Array
+let arrayNames =  json["users"].arrayValue.map {$0["name"].stringValue}
+```
+
+```swift
+// Getting a string from a JSON Dictionary
+let name = json["name"].stringValue
+```
+
+```swift
+// Getting a string using a path to the element
+let path: [JSONSubscriptType] = [1,"list",2,"name"]
+let name = json[path].string
+// Just the same
+let name = json[1]["list"][2]["name"].string
+// Alternatively
+let name = json[1,"list",2,"name"].string
+```
+
+```swift
+// With a hard way
+let name = json[].string
+```
+
+```swift
+// With a custom way
+let keys:[JSONSubscriptType] = [1,"list",2,"name"]
+let name = json[keys].string
+```
+
+#### Loop
+
+```swift
+// If json is .Dictionary
+for (key,subJson):(String, JSON) in json {
+   // Do something you want
+}
+```
+
+*The first element is always a String, even if the JSON is an Array*
+
+```swift
+// If json is .Array
+// The `index` is 0..<json.count's string value
+for (index,subJson):(String, JSON) in json {
+    // Do something you want
+}
+```
+
+#### Error
+
+##### SwiftyJSON 4.x
+
+SwiftyJSON 4.x introduces an enum type called `SwiftyJSONError`, which includes `unsupportedType`, `indexOutOfBounds`, `elementTooDeep`, `wrongType`, `notExist` and `invalidJSON`, at the same time, `ErrorDomain` are being replaced by `SwiftyJSONError.errorDomain`.
+Note: Those old error types are deprecated in SwiftyJSON 4.x and will be removed in the future release.
+
+##### SwiftyJSON 3.x
+
+Use a subscript to get/set a value in an Array or Dictionary
+
+If the JSON is:
+*  an array, the app may crash with "index out-of-bounds."
+*  a dictionary, it will be assigned to `nil` without a reason.
+*  not an array or a dictionary, the app may crash with an "unrecognised selector" exception.
+
+This will never happen in SwiftyJSON.
+
+```swift
+let json = JSON(["name", "age"])
+if let name = json[999].string {
+    // Do something you want
+} else {
+    print(json[999].error!) // "Array[999] is out of bounds"
+}
+```
+
+```swift
+let json = JSON(["name":"Jack", "age": 25])
+if let name = json["address"].string {
+    // Do something you want
+} else {
+    print(json["address"].error!) // "Dictionary["address"] does not exist"
+}
+```
+
+```swift
+let json = JSON(12345)
+if let age = json[0].string {
+    // Do something you want
+} else {
+    print(json[0])       // "Array[0] failure, It is not an array"
+    print(json[0].error!) // "Array[0] failure, It is not an array"
+}
+
+if let name = json["name"].string {
+    // Do something you want
+} else {
+    print(json["name"])       // "Dictionary[\"name"] failure, It is not an dictionary"
+    print(json["name"].error!) // "Dictionary[\"name"] failure, It is not an dictionary"
+}
+```
+
+#### Optional getter
+
+```swift
+// NSNumber
+if let id = json["user"]["favourites_count"].number {
+   // Do something you want
+} else {
+   // Print the error
+   print(json["user"]["favourites_count"].error!)
+}
+```
+
+```swift
+// String
+if let id = json["user"]["name"].string {
+   // Do something you want
+} else {
+   // Print the error
+   print(json["user"]["name"].error!)
+}
+```
+
+```swift
+// Bool
+if let id = json["user"]["is_translator"].bool {
+   // Do something you want
+} else {
+   // Print the error
+   print(json["user"]["is_translator"].error!)
+}
+```
+
+```swift
+// Int
+if let id = json["user"]["id"].int {
+   // Do something you want
+} else {
+   // Print the error
+   print(json["user"]["id"].error!)
+}
+...
+```
+
+#### Non-optional getter
+
+Non-optional getter is named `xxxValue`
+
+```swift
+// If not a Number or nil, return 0
+let id: Int = json["id"].intValue
+```
+
+```swift
+// If not a String or nil, return ""
+let name: String = json["name"].stringValue
+```
+
+```swift
+// If not an Array or nil, return []
+let list: Array<JSON> = json["list"].arrayValue
+```
+
+```swift
+// If not a Dictionary or nil, return [:]
+let user: Dictionary<String, JSON> = json["user"].dictionaryValue
+```
+
+#### Setter
+
+```swift
+json["name"] = JSON("new-name")
+json[0] = JSON(1)
+```
+
+```swift
+json["id"].int =  1234567890
+json["coordinate"].double =  8766.766
+json["name"].string =  "Jack"
+json.arrayObject = [1,2,3,4]
+json.dictionaryObject = ["name":"Jack", "age":25]
+```
+
+#### Raw object
+
+```swift
+let rawObject: Any = json.object
+```
+
+```swift
+let rawValue: Any = json.rawValue
+```
+
+```swift
+//convert the JSON to raw NSData
+do {
+	let rawData = try json.rawData()
+  //Do something you want
+} catch {
+	print("Error \(error)")
+}
+```
+
+```swift
+//convert the JSON to a raw String
+if let rawString = json.rawString() {
+  //Do something you want
+} else {
+	print("json.rawString is nil")
+}
+```
+
+#### Existence
+
+```swift
+// shows you whether value specified in JSON or not
+if json["name"].exists()
+```
+
+#### Literal convertibles
+
+For more info about literal convertibles: [Swift Literal Convertibles](http://nshipster.com/swift-literal-convertible/)
+
+```swift
+// StringLiteralConvertible
+let json: JSON = "I'm a json"
+```
+
+```swift
+/ /IntegerLiteralConvertible
+let json: JSON =  12345
+```
+
+```swift
+// BooleanLiteralConvertible
+let json: JSON =  true
+```
+
+```swift
+// FloatLiteralConvertible
+let json: JSON =  2.8765
+```
+
+```swift
+// DictionaryLiteralConvertible
+let json: JSON =  ["I":"am", "a":"json"]
+```
+
+```swift
+// ArrayLiteralConvertible
+let json: JSON =  ["I", "am", "a", "json"]
+```
+
+```swift
+// With subscript in array
+var json: JSON =  [1,2,3]
+json[0] = 100
+json[1] = 200
+json[2] = 300
+json[999] = 300 // Don't worry, nothing will happen
+```
+
+```swift
+// With subscript in dictionary
+var json: JSON =  ["name": "Jack", "age": 25]
+json["name"] = "Mike"
+json["age"] = "25" // It's OK to set String
+json["address"] = "L.A." // Add the "address": "L.A." in json
+```
+
+```swift
+// Array & Dictionary
+var json: JSON =  ["name": "Jack", "age": 25, "list": ["a", "b", "c", ["what": "this"]]]
+json["list"][3]["what"] = "that"
+json["list",3,"what"] = "that"
+let path: [JSONSubscriptType] = ["list",3,"what"]
+json[path] = "that"
+```
+
+```swift
+// With other JSON objects
+let user: JSON = ["username" : "Steve", "password": "supersecurepassword"]
+let auth: JSON = [
+  "user": user.object, // use user.object instead of just user
+  "apikey": "supersecretapitoken"
+]
+```
+
+#### Merging
+
+It is possible to merge one JSON into another JSON. Merging a JSON into another JSON adds all non existing values to the original JSON which are only present in the `other` JSON.
+
+If both JSONs contain a value for the same key, _mostly_ this value gets overwritten in the original JSON, but there are two cases where it provides some special treatment:
+
+- In case of both values being a `JSON.Type.array` the values form the array found in the `other` JSON getting appended to the original JSON's array value.
+- In case of both values being a `JSON.Type.dictionary` both JSON-values are getting merged the same way the encapsulating JSON is merged.
+
+In case, where two fields in a JSON have a different types, the value will get always overwritten.
+
+There are two different fashions for merging: `merge` modifies the original JSON, whereas `merged` works non-destructively on a copy.
+
+```swift
+let original: JSON = [
+    "first_name": "John",
+    "age": 20,
+    "skills": ["Coding", "Reading"],
+    "address": [
+        "street": "Front St",
+        "zip": "12345",
+    ]
+]
+
+let update: JSON = [
+    "last_name": "Doe",
+    "age": 21,
+    "skills": ["Writing"],
+    "address": [
+        "zip": "12342",
+        "city": "New York City"
+    ]
+]
+
+let updated = original.merge(with: update)
+// [
+//     "first_name": "John",
+//     "last_name": "Doe",
+//     "age": 21,
+//     "skills": ["Coding", "Reading", "Writing"],
+//     "address": [
+//         "street": "Front St",
+//         "zip": "12342",
+//         "city": "New York City"
+//     ]
+// ]
+```
+
+## String representation
+There are two options available:
+- use the default Swift one
+- use a custom one that will handle optionals well and represent `nil` as `"null"`:
+```swift
+let dict = ["1":2, "2":"two", "3": nil] as [String: Any?]
+let json = JSON(dict)
+let representation = json.rawString(options: [.castNilToNSNull: true])
+// representation is "{\"1\":2,\"2\":\"two\",\"3\":null}", which represents {"1":2,"2":"two","3":null}
+```
+
+## Work with [Alamofire](https://github.com/Alamofire/Alamofire)
+
+SwiftyJSON nicely wraps the result of the Alamofire JSON response handler:
+
+```swift
+Alamofire.request(url, method: .get).validate().responseJSON { response in
+    switch response.result {
+    case .success(let value):
+        let json = JSON(value)
+        print("JSON: \(json)")
+    case .failure(let error):
+        print(error)
+    }
+}
+```
+
+We also provide an extension of Alamofire for serializing NSData to SwiftyJSON's JSON.
+
+See: [Alamofire-SwiftyJSON](https://github.com/SwiftyJSON/Alamofire-SwiftyJSON)
+
+
+## Work with [Moya](https://github.com/Moya/Moya)
+
+SwiftyJSON parse data to JSON:
+
+```swift
+let provider = MoyaProvider<Backend>()
+provider.request(.showProducts) { result in
+    switch result {
+    case let .success(moyaResponse):
+        let data = moyaResponse.data
+        let json = JSON(data: data) // convert network data to json
+        print(json)
+    case let .failure(error):
+        print("error: \(error)")
+    }
+}
+
+```
+
+## SwiftyJSON Model Generator
+Tools to generate SwiftyJSON Models
+* [JSON Cafe](http://www.jsoncafe.com/)
+* [JSON Export](https://github.com/Ahmed-Ali/JSONExport)

trolley/Pods/Target Support Files/Alamofire/Alamofire-Info.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>5.0.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>

trolley/Pods/Target Support Files/Alamofire/Alamofire-dummy.m

@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_Alamofire : NSObject
+@end
+@implementation PodsDummy_Alamofire
+@end

trolley/Pods/Target Support Files/Alamofire/Alamofire-prefix.pch

@@ -0,0 +1,12 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+

trolley/Pods/Target Support Files/Alamofire/Alamofire-umbrella.h

@@ -0,0 +1,16 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+
+FOUNDATION_EXPORT double AlamofireVersionNumber;
+FOUNDATION_EXPORT const unsigned char AlamofireVersionString[];
+

trolley/Pods/Target Support Files/Alamofire/Alamofire.modulemap

@@ -0,0 +1,6 @@
+framework module Alamofire {
+  umbrella header "Alamofire-umbrella.h"
+
+  export *
+  module * { export * }
+}

trolley/Pods/Target Support Files/Alamofire/Alamofire.xcconfig

@@ -0,0 +1,11 @@
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/Alamofire
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+OTHER_LDFLAGS = $(inherited) -framework "CFNetwork"
+OTHER_SWIFT_FLAGS = $(inherited) -D COCOAPODS
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/Alamofire
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES

trolley/Pods/Target Support Files/Pods-Trolley App/Pods-Trolley App-Info.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>

trolley/Pods/Target Support Files/Pods-Trolley App/Pods-Trolley App-acknowledgements.markdown

@@ -0,0 +1,51 @@
+# Acknowledgements
+This application makes use of the following third party libraries:
+
+## Alamofire
+
+Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+
+## SwiftyJSON
+
+The MIT License (MIT)
+
+Copyright (c) 2017 Ruoyu Fu
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+Generated by CocoaPods - https://cocoapods.org

trolley/Pods/Target Support Files/Pods-Trolley App/Pods-Trolley App-acknowledgements.plist

@@ -0,0 +1,89 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreferenceSpecifiers</key>
+	<array>
+		<dict>
+			<key>FooterText</key>
+			<string>This application makes use of the following third party libraries:</string>
+			<key>Title</key>
+			<string>Acknowledgements</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>Copyright (c) 2014-2018 Alamofire Software Foundation (http://alamofire.org/)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+</string>
+			<key>License</key>
+			<string>MIT</string>
+			<key>Title</key>
+			<string>Alamofire</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>The MIT License (MIT)
+
+Copyright (c) 2017 Ruoyu Fu
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+</string>
+			<key>License</key>
+			<string>MIT</string>
+			<key>Title</key>
+			<string>SwiftyJSON</string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+		<dict>
+			<key>FooterText</key>
+			<string>Generated by CocoaPods - https://cocoapods.org</string>
+			<key>Title</key>
+			<string></string>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+		</dict>
+	</array>
+	<key>StringsTable</key>
+	<string>Acknowledgements</string>
+	<key>Title</key>
+	<string>Acknowledgements</string>
+</dict>
+</plist>

trolley/Pods/Target Support Files/Pods-Trolley App/Pods-Trolley App-dummy.m

@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_Pods_Trolley_App : NSObject
+@end
+@implementation PodsDummy_Pods_Trolley_App
+@end

trolley/Pods/Target Support Files/Pods-Trolley App/Pods-Trolley App-frameworks-Debug-input-files.xcfilelist

@@ -0,0 +1,3 @@
+${PODS_ROOT}/Target Support Files/Pods-Trolley App/Pods-Trolley App-frameworks.sh
+${BUILT_PRODUCTS_DIR}/Alamofire/Alamofire.framework
+${BUILT_PRODUCTS_DIR}/SwiftyJSON/SwiftyJSON.framework

trolley/Pods/Target Support Files/Pods-Trolley App/Pods-Trolley App-frameworks-Debug-output-files.xcfilelist

@@ -0,0 +1,2 @@
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/Alamofire.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/SwiftyJSON.framework

trolley/Pods/Target Support Files/Pods-Trolley App/Pods-Trolley App-frameworks-Release-input-files.xcfilelist

@@ -0,0 +1,3 @@
+${PODS_ROOT}/Target Support Files/Pods-Trolley App/Pods-Trolley App-frameworks.sh
+${BUILT_PRODUCTS_DIR}/Alamofire/Alamofire.framework
+${BUILT_PRODUCTS_DIR}/SwiftyJSON/SwiftyJSON.framework

trolley/Pods/Target Support Files/Pods-Trolley App/Pods-Trolley App-frameworks-Release-output-files.xcfilelist

@@ -0,0 +1,2 @@
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/Alamofire.framework
+${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/SwiftyJSON.framework

trolley/Pods/Target Support Files/Pods-Trolley App/Pods-Trolley App-frameworks.sh

@@ -0,0 +1,173 @@
+#!/bin/sh
+set -e
+set -u
+set -o pipefail
+
+function on_error {
+  echo "$(realpath -mq "${0}"):$1: error: Unexpected failure"
+}
+trap 'on_error $LINENO' ERR
+
+if [ -z ${FRAMEWORKS_FOLDER_PATH+x} ]; then
+  # If FRAMEWORKS_FOLDER_PATH is not set, then there's nowhere for us to copy
+  # frameworks to, so exit 0 (signalling the script phase was successful).
+  exit 0
+fi
+
+echo "mkdir -p ${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+mkdir -p "${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+
+COCOAPODS_PARALLEL_CODE_SIGN="${COCOAPODS_PARALLEL_CODE_SIGN:-false}"
+SWIFT_STDLIB_PATH="${DT_TOOLCHAIN_DIR}/usr/lib/swift/${PLATFORM_NAME}"
+
+# Used as a return value for each invocation of `strip_invalid_archs` function.
+STRIP_BINARY_RETVAL=0
+
+# This protects against multiple targets copying the same framework dependency at the same time. The solution
+# was originally proposed here: https://lists.samba.org/archive/rsync/2008-February/020158.html
+RSYNC_PROTECT_TMP_FILES=(--filter "P .*.??????")
+
+# Copies and strips a vendored framework
+install_framework()
+{
+  if [ -r "${BUILT_PRODUCTS_DIR}/$1" ]; then
+    local source="${BUILT_PRODUCTS_DIR}/$1"
+  elif [ -r "${BUILT_PRODUCTS_DIR}/$(basename "$1")" ]; then
+    local source="${BUILT_PRODUCTS_DIR}/$(basename "$1")"
+  elif [ -r "$1" ]; then
+    local source="$1"
+  fi
+
+  local destination="${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
+
+  if [ -L "${source}" ]; then
+    echo "Symlinked..."
+    source="$(readlink "${source}")"
+  fi
+
+  # Use filter instead of exclude so missing patterns don't throw errors.
+  echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${source}\" \"${destination}\""
+  rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${destination}"
+
+  local basename
+  basename="$(basename -s .framework "$1")"
+  binary="${destination}/${basename}.framework/${basename}"
+
+  if ! [ -r "$binary" ]; then
+    binary="${destination}/${basename}"
+  elif [ -L "${binary}" ]; then
+    echo "Destination binary is symlinked..."
+    dirname="$(dirname "${binary}")"
+    binary="${dirname}/$(readlink "${binary}")"
+  fi
+
+  # Strip invalid architectures so "fat" simulator / device frameworks work on device
+  if [[ "$(file "$binary")" == *"dynamically linked shared library"* ]]; then
+    strip_invalid_archs "$binary"
+  fi
+
+  # Resign the code if required by the build settings to avoid unstable apps
+  code_sign_if_enabled "${destination}/$(basename "$1")"
+
+  # Embed linked Swift runtime libraries. No longer necessary as of Xcode 7.
+  if [ "${XCODE_VERSION_MAJOR}" -lt 7 ]; then
+    local swift_runtime_libs
+    swift_runtime_libs=$(xcrun otool -LX "$binary" | grep --color=never @rpath/libswift | sed -E s/@rpath\\/\(.+dylib\).*/\\1/g | uniq -u)
+    for lib in $swift_runtime_libs; do
+      echo "rsync -auv \"${SWIFT_STDLIB_PATH}/${lib}\" \"${destination}\""
+      rsync -auv "${SWIFT_STDLIB_PATH}/${lib}" "${destination}"
+      code_sign_if_enabled "${destination}/${lib}"
+    done
+  fi
+}
+
+# Copies and strips a vendored dSYM
+install_dsym() {
+  local source="$1"
+  if [ -r "$source" ]; then
+    # Copy the dSYM into a the targets temp dir.
+    echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${source}\" \"${DERIVED_FILES_DIR}\""
+    rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${source}" "${DERIVED_FILES_DIR}"
+
+    local basename
+    basename="$(basename -s .framework.dSYM "$source")"
+    binary="${DERIVED_FILES_DIR}/${basename}.framework.dSYM/Contents/Resources/DWARF/${basename}"
+
+    # Strip invalid architectures so "fat" simulator / device frameworks work on device
+    if [[ "$(file "$binary")" == *"Mach-O "*"dSYM companion"* ]]; then
+      strip_invalid_archs "$binary"
+    fi
+
+    if [[ $STRIP_BINARY_RETVAL == 1 ]]; then
+      # Move the stripped file into its final destination.
+      echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter \"- CVS/\" --filter \"- .svn/\" --filter \"- .git/\" --filter \"- .hg/\" --filter \"- Headers\" --filter \"- PrivateHeaders\" --filter \"- Modules\" \"${DERIVED_FILES_DIR}/${basename}.framework.dSYM\" \"${DWARF_DSYM_FOLDER_PATH}\""
+      rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${DERIVED_FILES_DIR}/${basename}.framework.dSYM" "${DWARF_DSYM_FOLDER_PATH}"
+    else
+      # The dSYM was not stripped at all, in this case touch a fake folder so the input/output paths from Xcode do not reexecute this script because the file is missing.
+      touch "${DWARF_DSYM_FOLDER_PATH}/${basename}.framework.dSYM"
+    fi
+  fi
+}
+
+# Copies the bcsymbolmap files of a vendored framework
+install_bcsymbolmap() {
+    local bcsymbolmap_path="$1"
+    local destination="${BUILT_PRODUCTS_DIR}"
+    echo "rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${bcsymbolmap_path}" "${destination}""
+    rsync --delete -av "${RSYNC_PROTECT_TMP_FILES[@]}" --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "${bcsymbolmap_path}" "${destination}"
+}
+
+# Signs a framework with the provided identity
+code_sign_if_enabled() {
+  if [ -n "${EXPANDED_CODE_SIGN_IDENTITY:-}" -a "${CODE_SIGNING_REQUIRED:-}" != "NO" -a "${CODE_SIGNING_ALLOWED}" != "NO" ]; then
+    # Use the current code_sign_identity
+    echo "Code Signing $1 with Identity ${EXPANDED_CODE_SIGN_IDENTITY_NAME}"
+    local code_sign_cmd="/usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS:-} --preserve-metadata=identifier,entitlements '$1'"
+
+    if [ "${COCOAPODS_PARALLEL_CODE_SIGN}" == "true" ]; then
+      code_sign_cmd="$code_sign_cmd &"
+    fi
+    echo "$code_sign_cmd"
+    eval "$code_sign_cmd"
+  fi
+}
+
+# Strip invalid architectures
+strip_invalid_archs() {
+  binary="$1"
+  # Get architectures for current target binary
+  binary_archs="$(lipo -info "$binary" | rev | cut -d ':' -f1 | awk '{$1=$1;print}' | rev)"
+  # Intersect them with the architectures we are building for
+  intersected_archs="$(echo ${ARCHS[@]} ${binary_archs[@]} | tr ' ' '\n' | sort | uniq -d)"
+  # If there are no archs supported by this binary then warn the user
+  if [[ -z "$intersected_archs" ]]; then
+    echo "warning: [CP] Vendored binary '$binary' contains architectures ($binary_archs) none of which match the current build architectures ($ARCHS)."
+    STRIP_BINARY_RETVAL=0
+    return
+  fi
+  stripped=""
+  for arch in $binary_archs; do
+    if ! [[ "${ARCHS}" == *"$arch"* ]]; then
+      # Strip non-valid architectures in-place
+      lipo -remove "$arch" -output "$binary" "$binary"
+      stripped="$stripped $arch"
+    fi
+  done
+  if [[ "$stripped" ]]; then
+    echo "Stripped $binary of architectures:$stripped"
+  fi
+  STRIP_BINARY_RETVAL=1
+}
+
+
+if [[ "$CONFIGURATION" == "Debug" ]]; then
+  install_framework "${BUILT_PRODUCTS_DIR}/Alamofire/Alamofire.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/SwiftyJSON/SwiftyJSON.framework"
+fi
+if [[ "$CONFIGURATION" == "Release" ]]; then
+  install_framework "${BUILT_PRODUCTS_DIR}/Alamofire/Alamofire.framework"
+  install_framework "${BUILT_PRODUCTS_DIR}/SwiftyJSON/SwiftyJSON.framework"
+fi
+if [ "${COCOAPODS_PARALLEL_CODE_SIGN}" == "true" ]; then
+  wait
+fi

trolley/Pods/Target Support Files/Pods-Trolley App/Pods-Trolley App-umbrella.h

@@ -0,0 +1,16 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+
+FOUNDATION_EXPORT double Pods_Trolley_AppVersionNumber;
+FOUNDATION_EXPORT const unsigned char Pods_Trolley_AppVersionString[];
+

trolley/Pods/Target Support Files/Pods-Trolley App/Pods-Trolley App.debug.xcconfig

@@ -0,0 +1,12 @@
+ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/Alamofire" "${PODS_CONFIGURATION_BUILD_DIR}/SwiftyJSON"
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/Alamofire/Alamofire.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/SwiftyJSON/SwiftyJSON.framework/Headers"
+LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
+OTHER_LDFLAGS = $(inherited) -framework "Alamofire" -framework "CFNetwork" -framework "SwiftyJSON"
+OTHER_SWIFT_FLAGS = $(inherited) -D COCOAPODS
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_PODFILE_DIR_PATH = ${SRCROOT}/.
+PODS_ROOT = ${SRCROOT}/Pods
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES

trolley/Pods/Target Support Files/Pods-Trolley App/Pods-Trolley App.modulemap

@@ -0,0 +1,6 @@
+framework module Pods_Trolley_App {
+  umbrella header "Pods-Trolley App-umbrella.h"
+
+  export *
+  module * { export * }
+}

trolley/Pods/Target Support Files/Pods-Trolley App/Pods-Trolley App.release.xcconfig

@@ -0,0 +1,12 @@
+ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES
+FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/Alamofire" "${PODS_CONFIGURATION_BUILD_DIR}/SwiftyJSON"
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+HEADER_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/Alamofire/Alamofire.framework/Headers" "${PODS_CONFIGURATION_BUILD_DIR}/SwiftyJSON/SwiftyJSON.framework/Headers"
+LD_RUNPATH_SEARCH_PATHS = $(inherited) '@executable_path/Frameworks' '@loader_path/Frameworks'
+OTHER_LDFLAGS = $(inherited) -framework "Alamofire" -framework "CFNetwork" -framework "SwiftyJSON"
+OTHER_SWIFT_FLAGS = $(inherited) -D COCOAPODS
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_PODFILE_DIR_PATH = ${SRCROOT}/.
+PODS_ROOT = ${SRCROOT}/Pods
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES

trolley/Pods/Target Support Files/SwiftyJSON/SwiftyJSON-Info.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>${PRODUCT_BUNDLE_IDENTIFIER}</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>${PRODUCT_NAME}</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>4.3.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>${CURRENT_PROJECT_VERSION}</string>
+  <key>NSPrincipalClass</key>
+  <string></string>
+</dict>
+</plist>

trolley/Pods/Target Support Files/SwiftyJSON/SwiftyJSON-dummy.m

@@ -0,0 +1,5 @@
+#import <Foundation/Foundation.h>
+@interface PodsDummy_SwiftyJSON : NSObject
+@end
+@implementation PodsDummy_SwiftyJSON
+@end

trolley/Pods/Target Support Files/SwiftyJSON/SwiftyJSON-prefix.pch

@@ -0,0 +1,12 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+

trolley/Pods/Target Support Files/SwiftyJSON/SwiftyJSON-umbrella.h

@@ -0,0 +1,16 @@
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#else
+#ifndef FOUNDATION_EXPORT
+#if defined(__cplusplus)
+#define FOUNDATION_EXPORT extern "C"
+#else
+#define FOUNDATION_EXPORT extern
+#endif
+#endif
+#endif
+
+
+FOUNDATION_EXPORT double SwiftyJSONVersionNumber;
+FOUNDATION_EXPORT const unsigned char SwiftyJSONVersionString[];
+

trolley/Pods/Target Support Files/SwiftyJSON/SwiftyJSON.modulemap

@@ -0,0 +1,6 @@
+framework module SwiftyJSON {
+  umbrella header "SwiftyJSON-umbrella.h"
+
+  export *
+  module * { export * }
+}

trolley/Pods/Target Support Files/SwiftyJSON/SwiftyJSON.xcconfig

@@ -0,0 +1,10 @@
+CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/SwiftyJSON
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
+OTHER_SWIFT_FLAGS = $(inherited) -D COCOAPODS
+PODS_BUILD_DIR = ${BUILD_DIR}
+PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
+PODS_ROOT = ${SRCROOT}
+PODS_TARGET_SRCROOT = ${PODS_ROOT}/SwiftyJSON
+PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
+SKIP_INSTALL = YES
+USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES

Trolley App.xcodeproj/project.pbxproj → trolley/Trolley App.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 50;
+	objectVersion = 51;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -13,6 +13,7 @@
 		5B319F07235DDC06009AD1A9 /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 5B319F05235DDC06009AD1A9 /* Main.storyboard */; };
 		5B319F09235DDC07009AD1A9 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 5B319F08235DDC07009AD1A9 /* Assets.xcassets */; };
 		5B319F0C235DDC07009AD1A9 /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 5B319F0A235DDC07009AD1A9 /* LaunchScreen.storyboard */; };
+		E2E000AE10F252F66881171C /* Pods_Trolley_App.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 92BC61886F41EF616207DB3F /* Pods_Trolley_App.framework */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -24,6 +25,9 @@
 		5B319F08235DDC07009AD1A9 /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
 		5B319F0B235DDC07009AD1A9 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
 		5B319F0D235DDC07009AD1A9 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		8F944001F21B0F4BA012D57F /* Pods-Trolley App.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Trolley App.release.xcconfig"; path = "Target Support Files/Pods-Trolley App/Pods-Trolley App.release.xcconfig"; sourceTree = "<group>"; };
+		92BC61886F41EF616207DB3F /* Pods_Trolley_App.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_Trolley_App.framework; sourceTree = BUILT_PRODUCTS_DIR; };
+		F2207BFA1F7ED07354A184F0 /* Pods-Trolley App.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Trolley App.debug.xcconfig"; path = "Target Support Files/Pods-Trolley App/Pods-Trolley App.debug.xcconfig"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -31,17 +35,29 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				E2E000AE10F252F66881171C /* Pods_Trolley_App.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
+		011FDEEB1B083FD33C7E3826 /* Pods */ = {
+			isa = PBXGroup;
+			children = (
+				F2207BFA1F7ED07354A184F0 /* Pods-Trolley App.debug.xcconfig */,
+				8F944001F21B0F4BA012D57F /* Pods-Trolley App.release.xcconfig */,
+			);
+			path = Pods;
+			sourceTree = "<group>";
+		};
 		5B319EF3235DDC06009AD1A9 = {
 			isa = PBXGroup;
 			children = (
 				5B319EFE235DDC06009AD1A9 /* Trolley App */,
 				5B319EFD235DDC06009AD1A9 /* Products */,
+				011FDEEB1B083FD33C7E3826 /* Pods */,
+				859E3FDE1532FF49C1AE4393 /* Frameworks */,
 			);
 			sourceTree = "<group>";
 		};
@@ -67,6 +83,14 @@
 			path = "Trolley App";
 			sourceTree = "<group>";
 		};
+		859E3FDE1532FF49C1AE4393 /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				92BC61886F41EF616207DB3F /* Pods_Trolley_App.framework */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -74,9 +98,11 @@
 			isa = PBXNativeTarget;
 			buildConfigurationList = 5B319F10235DDC07009AD1A9 /* Build configuration list for PBXNativeTarget "Trolley App" */;
 			buildPhases = (
+				6112C151479F678743A2819B /* [CP] Check Pods Manifest.lock */,
 				5B319EF8235DDC06009AD1A9 /* Sources */,
 				5B319EF9235DDC06009AD1A9 /* Frameworks */,
 				5B319EFA235DDC06009AD1A9 /* Resources */,
+				34077CDAC94F7E61986613C8 /* [CP] Embed Pods Frameworks */,
 			);
 			buildRules = (
 			);
@@ -133,6 +159,48 @@
 		};
 /* End PBXResourcesBuildPhase section */
 
+/* Begin PBXShellScriptBuildPhase section */
+		34077CDAC94F7E61986613C8 /* [CP] Embed Pods Frameworks */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputFileListPaths = (
+				"${PODS_ROOT}/Target Support Files/Pods-Trolley App/Pods-Trolley App-frameworks-${CONFIGURATION}-input-files.xcfilelist",
+			);
+			name = "[CP] Embed Pods Frameworks";
+			outputFileListPaths = (
+				"${PODS_ROOT}/Target Support Files/Pods-Trolley App/Pods-Trolley App-frameworks-${CONFIGURATION}-output-files.xcfilelist",
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-Trolley App/Pods-Trolley App-frameworks.sh\"\n";
+			showEnvVarsInLog = 0;
+		};
+		6112C151479F678743A2819B /* [CP] Check Pods Manifest.lock */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputFileListPaths = (
+			);
+			inputPaths = (
+				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
+				"${PODS_ROOT}/Manifest.lock",
+			);
+			name = "[CP] Check Pods Manifest.lock";
+			outputFileListPaths = (
+			);
+			outputPaths = (
+				"$(DERIVED_FILE_DIR)/Pods-Trolley App-checkManifestLockResult.txt",
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
+			showEnvVarsInLog = 0;
+		};
+/* End PBXShellScriptBuildPhase section */
+
 /* Begin PBXSourcesBuildPhase section */
 		5B319EF8235DDC06009AD1A9 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
@@ -282,16 +350,18 @@
 		};
 		5B319F11235DDC07009AD1A9 /* Debug */ = {
 			isa = XCBuildConfiguration;
+			baseConfigurationReference = F2207BFA1F7ED07354A184F0 /* Pods-Trolley App.debug.xcconfig */;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_STYLE = Automatic;
-				DEVELOPMENT_TEAM = H67NFWVH5W;
+				DEVELOPMENT_TEAM = JZXSD8676R;
 				INFOPLIST_FILE = "Trolley App/Info.plist";
+				IPHONEOS_DEPLOYMENT_TARGET = 13.1;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = "com.uprrp.Trolley-App";
+				PRODUCT_BUNDLE_IDENTIFIER = com.uprrp.TrolleyApp;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 1;
@@ -300,16 +370,18 @@
 		};
 		5B319F12235DDC07009AD1A9 /* Release */ = {
 			isa = XCBuildConfiguration;
+			baseConfigurationReference = 8F944001F21B0F4BA012D57F /* Pods-Trolley App.release.xcconfig */;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_STYLE = Automatic;
-				DEVELOPMENT_TEAM = H67NFWVH5W;
+				DEVELOPMENT_TEAM = JZXSD8676R;
 				INFOPLIST_FILE = "Trolley App/Info.plist";
+				IPHONEOS_DEPLOYMENT_TARGET = 13.1;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				PRODUCT_BUNDLE_IDENTIFIER = "com.uprrp.Trolley-App";
+				PRODUCT_BUNDLE_IDENTIFIER = com.uprrp.TrolleyApp;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 1;

trolley/Trolley App.xcodeproj/xcuserdata/stephanie.marie.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>SchemeUserState</key>
+	<dict>
+		<key>Trolley App.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>3</integer>
+		</dict>
+	</dict>
+</dict>
+</plist>

trolley/Trolley App.xcodeproj/xcuserdata/stephaniem.ramos.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>SchemeUserState</key>
+	<dict>
+		<key>Trolley App.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>0</integer>
+		</dict>
+	</dict>
+</dict>
+</plist>

trolley/Trolley App.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Trolley App.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>

trolley/Trolley App.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

trolley/Trolley App/Assets.xcassets/biblio_Biblio.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "biblio_Biblio.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "biblio_Biblio-1.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "biblio_Biblio-2.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}