Fix JSON parsing for Xcode 9.1 (9B55)

Author: JakeLin

Podfile.lock

@@ -1,18 +1,18 @@
 PODS:
-  - Nimble (7.0.2)
+  - Nimble (7.0.3)
   - Quick (1.2.0)
-  - SwiftyJSON (3.1.4)
+  - SwiftyJSON (4.0.0)
 
 DEPENDENCIES:
   - Nimble
   - Quick
   - SwiftyJSON
 
 SPEC CHECKSUMS:
-  Nimble: bfe1f814edabba69ff145cb1283e04ed636a67f2
+  Nimble: 7f5a9c447a33002645a071bddafbfb24ea70e0ac
   Quick: 58d203b1c5e27fff7229c4c1ae445ad7069a7a08
-  SwiftyJSON: c2842d878f95482ffceec5709abc3d05680c0220
+  SwiftyJSON: 070dabdcb1beb81b247c65ffa3a79dbbfb3b48aa
 
-PODFILE CHECKSUM: 0737c164b0a514aa337a01ca722b89d99ee844b5
+PODFILE CHECKSUM: 3509c4c63edbe9a7b092aab021ca4e248077b966
 
 COCOAPODS: 1.3.1

SwiftWeather.xcodeproj/project.pbxproj

@@ -546,7 +546,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
+			shellScript = "diff \"${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;
 		};
 		875372B40EF6130AA88D65AB /* [CP] Check Pods Manifest.lock */ = {

SwiftWeather/OpenWeatherMapService.swift

@@ -50,25 +50,26 @@ struct OpenWeatherMapService: WeatherServiceProtocol {
     }
 
     print(url)
-    let request = URLRequest(url: url)
-    let task = session.dataTask(with: request,
-        completionHandler: { data, response, networkError in
-
+    let task = session.dataTask(with: url) { (data, response, error) in
       // Check network error
-      guard networkError == nil else {
+      guard error == nil else {
         let error = SWError(errorCode: .networkRequestFailed)
         completionHandler(nil, error)
         return
       }
-
+      
       // Check JSON serialization error
-      guard let unwrappedData = data else {
+      guard let data = data else {
         let error = SWError(errorCode: .jsonSerializationFailed)
         completionHandler(nil, error)
         return
       }
 
-      let json = JSON(data: unwrappedData)
+      guard let json = try? JSON(data: data) else {
+        let error = SWError(errorCode: .jsonParsingFailed)
+        completionHandler(nil, error)
+        return
+      }
 
       // Get temperature, location and icon and check parsing error
       guard let tempDegrees = json["list"][0]["main"]["temp"].double,
@@ -89,11 +90,10 @@ struct OpenWeatherMapService: WeatherServiceProtocol {
       let weatherIcon = WeatherIcon(condition: weatherCondition, iconString: iconString)
       weatherBuilder.iconText = weatherIcon.iconText
 
-
       weatherBuilder.forecasts = self.getFirstFourForecasts(json)
 
       completionHandler(weatherBuilder.build(), nil)
-    })
+    }
 
     task.resume()
   }