Re-use gson instance (improves performance)

app/src/main/java/com/h/pixeldroid/db/Converters.kt

@@ -7,120 +7,122 @@ import com.h.pixeldroid.objects.*
 import java.util.*
 
 class Converters {
+    private val gson = Gson()
+    
     @TypeConverter
-    fun listToJson(list: List<String>): String = Gson().toJson(list)
+    fun listToJson(list: List<String>): String = gson.toJson(list)
 
      @TypeConverter
      fun jsonToList(json: String): List<String> =
-         Gson().fromJson(json, Array<String>::class.java).toList()
+         gson.fromJson(json, Array<String>::class.java).toList()
 
     @TypeConverter
-    fun dateToJson(date: Date): String = Gson().toJson(date)
+    fun dateToJson(date: Date): String = gson.toJson(date)
 
     @TypeConverter
-    fun jsonToDate(json: String): Date = Gson().fromJson(json, Date::class.java)
+    fun jsonToDate(json: String): Date = gson.fromJson(json, Date::class.java)
 
     @TypeConverter
-    fun accountToJson(account: Account): String = Gson().toJson(account)
+    fun accountToJson(account: Account): String = gson.toJson(account)
 
     @TypeConverter
-    fun jsonToAccount(json: String): Account =  Gson().fromJson(json, Account::class.java)
+    fun jsonToAccount(json: String): Account =  gson.fromJson(json, Account::class.java)
 
     @TypeConverter
-    fun statusToJson(status: Status?): String = Gson().toJson(status)
+    fun statusToJson(status: Status?): String = gson.toJson(status)
 
     @TypeConverter
-    fun jsonToStatus(json: String): Status? =  Gson().fromJson(json, Status::class.java)
+    fun jsonToStatus(json: String): Status? =  gson.fromJson(json, Status::class.java)
 
     @TypeConverter
-    fun notificationTypeToJson(type: Notification.NotificationType?): String = Gson().toJson(type)
+    fun notificationTypeToJson(type: Notification.NotificationType?): String = gson.toJson(type)
 
     @TypeConverter
-    fun jsonToNotificationType(json: String): Notification.NotificationType? =  Gson().fromJson(
+    fun jsonToNotificationType(json: String): Notification.NotificationType? =  gson.fromJson(
         json,
         Notification.NotificationType::class.java
     )
 
     @TypeConverter
-    fun applicationToJson(type: Application?): String = Gson().toJson(type)
+    fun applicationToJson(type: Application?): String = gson.toJson(type)
 
     @TypeConverter
-    fun jsonToApplication(json: String): Application? =  Gson().fromJson(
+    fun jsonToApplication(json: String): Application? =  gson.fromJson(
         json,
         Application::class.java
     )
 
     @TypeConverter
-    fun cardToJson(type: Card?): String = Gson().toJson(type)
+    fun cardToJson(type: Card?): String = gson.toJson(type)
 
     @TypeConverter
-    fun jsonToCard(json: String): Card? =  Gson().fromJson(json, Card::class.java)
+    fun jsonToCard(json: String): Card? =  gson.fromJson(json, Card::class.java)
 
     @TypeConverter
-    fun attachmentToJson(type: Attachment?): String = Gson().toJson(type)
+    fun attachmentToJson(type: Attachment?): String = gson.toJson(type)
 
     @TypeConverter
-    fun jsonToAttachment(json: String): Attachment? =  Gson().fromJson(json, Attachment::class.java)
+    fun jsonToAttachment(json: String): Attachment? =  gson.fromJson(json, Attachment::class.java)
 
     @TypeConverter
     fun attachmentListToJson(type: List<Attachment>?): String {
         val listType = object : TypeToken<List<Attachment?>?>() {}.type
-        return Gson().toJson(type, listType)
+        return gson.toJson(type, listType)
     }
 
     @TypeConverter
     fun jsonToAttachmentList(json: String): List<Attachment>? {
         val listType = object : TypeToken<List<Attachment?>?>() {}.type
-        return Gson().fromJson(json, listType)
+        return gson.fromJson(json, listType)
     }
 
     @TypeConverter
     fun mentionListToJson(type: List<Mention>?): String {
         val listType = object : TypeToken<List<Mention?>?>() {}.type
-        return Gson().toJson(type, listType)
+        return gson.toJson(type, listType)
     }
 
     @TypeConverter
     fun jsonToMentionList(json: String): List<Mention>? {
         val listType = object : TypeToken<List<Mention?>?>() {}.type
-        return Gson().fromJson(json, listType)
+        return gson.fromJson(json, listType)
     }
 
     @TypeConverter
     fun emojiListToJson(type: List<Emoji>?): String {
         val listType = object : TypeToken<List<Emoji?>?>() {}.type
-        return Gson().toJson(type, listType)
+        return gson.toJson(type, listType)
     }
 
     @TypeConverter
     fun jsonToEmojiList(json: String): List<Emoji>? {
         val listType = object : TypeToken<List<Emoji?>?>() {}.type
-        return Gson().fromJson(json, listType)
+        return gson.fromJson(json, listType)
     }
 
     @TypeConverter
     fun tagListToJson(type: List<Tag>?): String {
         val listType = object : TypeToken<List<Tag?>?>() {}.type
-        return Gson().toJson(type, listType)
+        return gson.toJson(type, listType)
     }
 
     @TypeConverter
     fun jsonToTagList(json: String): List<Tag>? {
         val listType = object : TypeToken<List<Tag?>?>() {}.type
-        return Gson().fromJson(json, listType)
+        return gson.fromJson(json, listType)
     }
 
     @TypeConverter
-    fun pollToJson(type: Poll?): String = Gson().toJson(type)
+    fun pollToJson(type: Poll?): String = gson.toJson(type)
 
     @TypeConverter
-    fun jsonToPoll(json: String): Poll? =  Gson().fromJson(json, Poll::class.java)
+    fun jsonToPoll(json: String): Poll? =  gson.fromJson(json, Poll::class.java)
 
     @TypeConverter
-    fun visibilityToJson(type: Status.Visibility?): String = Gson().toJson(type)
+    fun visibilityToJson(type: Status.Visibility?): String = gson.toJson(type)
 
     @TypeConverter
-    fun jsonToVisibility(json: String): Status.Visibility? =  Gson().fromJson(
+    fun jsonToVisibility(json: String): Status.Visibility? =  gson.fromJson(
         json,
         Status.Visibility::class.java
     )