Merge branch 'feature/kevin' into 'develop'

Updated Swift Dictionary Extension

See merge request BPHV_MIPS/mvm_core!13

MVMCore/MVMCore/Categories/Dictionary+MFConvenience.swift

@@ -8,182 +8,185 @@
 
 import Foundation
 
+
 public extension Dictionary {
+    //-------------------------------------------------
+    // MARK:- Dictionary
+    //-------------------------------------------------
     
     /// Returns a Dictionary using the specified chain. An empty dictionary is returned if a dictionary for the chain does not exist
-    func dictionaryWithChainOfKeysOrIndexes(_ keysOrIndexes: [Any]) -> [String : Any] {
+    func dictionaryWithChainOfKeysOrIndexes(_ keysOrIndexes: [Any]) -> [String: Any] {
         
-        guard let dictionary = optionalDictionaryWithChainOfKeysOrIndexes(keysOrIndexes) else {
+        return optionalDictionaryWithChainOfKeysOrIndexes(keysOrIndexes) ?? [:]
-            return [:]
-        }
-        return dictionary
     }
     
     /// Returns an optional Dictionary using the specified chain. Returns nil if a dictionary for the chain does not exist
-    func optionalDictionaryWithChainOfKeysOrIndexes (_ keysOrIndexes: [Any]) -> [String : Any]? {
+    func optionalDictionaryWithChainOfKeysOrIndexes(_ keysOrIndexes: [Any]) -> [String: Any]? {
         
         return objectChainOfKeysOrIndexes(keysOrIndexes) as? [String: Any]
     }
     
-    func optionalDictionaryForKey(_ key: String) -> [String : Any]? {
+    func optionalDictionaryForKey(_ key: String) -> [String: Any]? {
         
-        return objectChainOfKeysOrIndexes([key]) as? [String: Any]
+        guard let key = key as? Key, let dictionary = self[key] as? [String: Any] else { return nil }
+        
+        return dictionary
     }
     
-    /// Returns a String using the specified chain. An empty string is returned if a string for the chain does not exist
+    /// Returns a Dictionary after looking up the specified key. An empty dictionary is returned if a dictionary for the key does not exist
-    func stringWithChainOfKeysOrIndexes(_ keysOrIndexes:[Any]) -> String {
+    func dictionaryForKey(_ key: String) -> [String: Any] {
+        
+        return optionalDictionaryForKey(key) ?? [:]
+    }
+    
+    //-------------------------------------------------
+    // MARK:- String
+    //-------------------------------------------------
+    
+    /// Returns a String after looking up the specified key. An empty string will be returned if a string for the key does not exist
+    func stringForkey(_ key: String) -> String {
+        
+        return optionalStringForKey(key) ?? ""
+    }
+    
+    /// Returns a String after looking up the specified key. Nil will be returned if a string for the key does not exist
+    func optionalStringForKey(_ key: String) -> String? {
+        
+        guard let key = key as? Key, let string = self[key] as? String else { return nil }
         
-        guard let string = objectChainOfKeysOrIndexes(keysOrIndexes) as? String else {
-            return ""
-        }
         return string
     }
     
-    func stringOptionalWithChainOfKeysOrIndexes(_ keysOrIndexes:[Any]) -> String? {
+    /// Returns a String using the specified chain. An empty string is returned if a string for the chain does not exist
+    func stringWithChainOfKeysOrIndexes(_ keysOrIndexes: [Any]) -> String {
+        
+        return objectChainOfKeysOrIndexes(keysOrIndexes) as? String ?? ""
+    }
+    
+    func stringOptionalWithChainOfKeysOrIndexes(_ keysOrIndexes: [Any]) -> String? {
+        
         return objectChainOfKeysOrIndexes(keysOrIndexes) as? String
     }
     
+    //-------------------------------------------------
+    // MARK:- Array
+    //-------------------------------------------------
+    
+    /// Returns an Array after looking up the specified key. An empty array will be returned if an array for the key does not exist
+    func arrayForKey(_ key: String) -> [Any] {
+        
+        return optionalArrayForKey(key) ?? []
+    }
+    
+    func optionalArrayForKey(_ key: String) -> [Any]? {
+        
+        guard let key = key as? Key, let array = self[key] as? [Any] else { return nil }
+        
+        return array
+    }
+    
     /// Returns an Array using the specified chain. Returns an empty array if an array for the chain does not exist
     func arrayForChainOfKeysOrIndexes(_ keysOrIndexes: [Any]) -> [Any] {
         
-        guard let array = objectChainOfKeysOrIndexes(keysOrIndexes) as? [Any] else {
+        return objectChainOfKeysOrIndexes(keysOrIndexes) as? [Any] ?? []
-            return []
-        }
-        return array
     }
     
     func optionalArrayForChainOfKeysOrIndexes(_ keysOrIndexes: [Any]) -> [Any]? {
+        
         return objectChainOfKeysOrIndexes(keysOrIndexes) as? [Any]
     }
     
-    /// Returns a Dictionary after looking up the specified key. An empty dictionary is returned if a dictionary for the key does not exist
+    //-------------------------------------------------
-    func dictionaryForKey(_ key : String) -> [String : Any] {
+    // MARK:- Bool
+    //-------------------------------------------------
     
-        return dictionaryWithChainOfKeysOrIndexes([key])
+    /// Return a Bool after looking up the specified key. This will return false if the key does not exist
-    }
+    func boolForKey(_ key: String) -> Bool {
         
-    /// Returns a String after looking up the specified key. An empty string will be returned if a string for the key does not exist
+        return optionalBoolForKey(key) ?? false
-    func stringForkey(_ key: String) -> String {
-        
-        return stringWithChainOfKeysOrIndexes([key])
-    }
-    
-    /// Returns a String after looking up the specified key. Nil will be returned if a string for the key does not exist
-    func optionalStringForKey(_ key: String) -> String? {
-        return objectChainOfKeysOrIndexes([key]) as? String
-    }
-    
-    
-    /// Returns an Array after looking up the specified key. An empty array will be returned if an array for the key does not exist
-    func arrayForKey(_ key : String) -> [Any] {
-        
-        return arrayForChainOfKeysOrIndexes([key])
-    }
-    
-    func optionalArrayForKey(_ key : String) -> [Any]? {
-        guard let key = key as? Key else {
-            return nil
-        }
-        return self[key] as? [Any]
     }
     
     /// Return a Bool after looking up the specified key. This will return false if the key does not exist
-    func boolForKey(_ key : String) -> Bool {
+    func optionalBoolForKey(_ key: String) -> Bool? {
         
-        guard let bool = objectChainOfKeysOrIndexes([key]) as? Bool else {
+        guard let key = key as? Key, let bool = self[key] as? Bool else { return nil }
-            return false
-        }
-        return bool
-    }
         
-    /// Return a Bool after looking up the specified key. This will return false if the key does not exist
-    func optionalBoolForKey(_ key : String) -> Bool? {
-        
-        guard let bool = objectChainOfKeysOrIndexes([key]) as? Bool else {
-            return nil
-        }
         return bool
     }
     
     func lenientBoolForKey(_ key: String) -> Bool {
-        guard let key = key as? Key, let object = self[key] else {
+        
-            return false
+        guard let key = key as? Key, let object = self[key] else { return false }
-        }
+        
         if let object = object as? NSNumber {
             return object.boolValue
+            
         } else if let object = object as? NSString {
             return object.boolValue
         }
+        
         return false
     }
     
-    func boolForChainOfKeysOrIndexes(_ keysOrIndexes:[Any])-> Bool {
+    func boolForChainOfKeysOrIndexes(_ keysOrIndexes: [Any]) -> Bool {
-        guard let bool = objectChainOfKeysOrIndexes(keysOrIndexes) as? Bool else {
+        
-            return false
+        return objectChainOfKeysOrIndexes(keysOrIndexes) as? Bool ?? false
-        }
-        return bool
     }
     
+    //-------------------------------------------------
+    // MARK:- Float
+    //-------------------------------------------------
+    
     /// Return a float from a string created by looking up the specified key. This will return 0.0 if the key does not exist
     func floatForKey(_ key: String) -> Float {
         
-        guard let floatValue = objectChainOfKeysOrIndexes([key]) as? Float else {
+        guard let key = key as? Key, let float = self[key] as? Float else { return 0.0 }
-            return 0.0
-        }
         
-        return floatValue
+        return float
+    }
+    
+    func floatFromStringForKey(_ key: String) -> Float {
+        
+        return Float(stringForkey(key)) ?? 0.0
     }
     
     func optionalCGFloatForKey(_ key: String) -> CGFloat? {
-        guard let key = key as? Key else {
+        
-            return nil
+        guard let key = key as? Key, let float = self[key] as? CGFloat else { return nil }
-        }
+        
-        return self[key] as? CGFloat
+        return float
     }
     
-    func floatFromStringForKey(_ key:String) -> Float {
+    //-------------------------------------------------
+    // MARK:- Int
+    //-------------------------------------------------
     
-        let stringValue = stringForkey(key)
+    func int32ForKey(_ key: String) -> Int32 {
         
-        guard let floatValue = Float(stringValue) else {
+        guard let key = key as? Key, let integer = self[key] as? Int32 else { return 0 }
-            return 0.0
-        }
         
-        return floatValue
+        return integer
     }
     
+    //-------------------------------------------------
+    // MARK:- Drill-Down to Key or Index
+    //-------------------------------------------------
     
-    func int32ForKey(_ key:String) -> Int32 {
+    private func objectChainOfKeysOrIndexes(_ keysOrIndexes: [Any]) -> Any? {
         
-        guard let intValue = objectChainOfKeysOrIndexes([key]) as? Int32 else {
+        var previousObject: Any? = self
-            return 0
-        }
-        
-        return intValue
-    }
-    
-    private func objectChainOfKeysOrIndexes(_ keysOrIndexes:[Any]) -> Any? {
-        
-        var previousObject : Any? = self
         
         for keyOrIndex in keysOrIndexes {
-            
+            if let nextDictionary = previousObject as? [String: Any],
-            if let nextDictionary = previousObject as? [String:Any],
                 let keyOrIndex = keyOrIndex as? String {
-                
                 previousObject = nextDictionary[keyOrIndex]
-                continue
-            }
                 
-            else if let nextArray = previousObject as? [Any],
+            } else if let nextArray = previousObject as? [Any],
                 let keyOrIndex = keyOrIndex as? Int {
-                
                 previousObject = nextArray[keyOrIndex]
-                continue
+                
-            }
+            } else {
-            else {
+                return nil
-                previousObject = nil
-                break
             }
         }