optimize deserialization of InlineKeyboardButton's

src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/Common.kt

@@ -88,6 +88,7 @@ const val loginUrlField = "login_url"
 const val forwardTextField = "forward_text"
 const val botUsernameField = "bot_username"
 const val switchInlineQueryCurrentChatField = "switch_inline_query_current_chat"
+const val switchInlineQueryField = "switch_inline_query"
 
 
 const val requestWriteAccessField = "request_write_access"
@@ -199,6 +200,7 @@ const val resultsField = "results"
 const val certificateField = "certificate"
 const val questionField = "question"
 const val optionsField = "options"
+const val payField = "pay"
 
 const val pointField = "point"
 const val xShiftField = "x_shift"

src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/InlineKeyboardButtons/InlineKeyboardButton.kt

@@ -12,6 +12,7 @@ sealed class InlineKeyboardButton {
 @Serializable
 data class PayInlineKeyboardButton(
     override val text: String,
+    @SerialName(payField)
     val pay: Boolean
 ) : InlineKeyboardButton()
 
@@ -40,12 +41,13 @@ data class SwitchInlineQueryCurrentChatInlineKeyboardButton(
 @Serializable
 data class SwitchInlineQueryInlineKeyboardButton(
     override val text: String,
-    @SerialName("switch_inline_query")
+    @SerialName(switchInlineQueryField)
     val switchInlineQuery: String
 ) : InlineKeyboardButton()
 
 @Serializable
 data class URLInlineKeyboardButton(
     override val text: String,
+    @SerialName(urlField)
     val url: String
 ) : InlineKeyboardButton()

src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/InlineKeyboardButtons/InlineKeyboardButtonSerializer.kt

@@ -1,34 +1,29 @@
 package com.github.insanusmokrassar.TelegramBotAPI.types.buttons.InlineKeyboardButtons
 
+import com.github.insanusmokrassar.TelegramBotAPI.types.*
 import kotlinx.serialization.*
 import kotlinx.serialization.internal.StringDescriptor
-import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.*
-import kotlinx.serialization.json.JsonElementSerializer
 
 object InlineKeyboardButtonSerializer : KSerializer<InlineKeyboardButton> {
     override val descriptor: SerialDescriptor = StringDescriptor.withName("com.github.insanusmokrassar.TelegramBotAPI.types.buttons.InlineKeyboardButtons.InlineKeyboardButton")
 
-    private val serializers = listOf(
+    private fun resolveSerializer(json: JsonObject): KSerializer<out InlineKeyboardButton> {
-        CallbackDataInlineKeyboardButton.serializer(),
+        return when {
-        LoginURLInlineKeyboardButton.serializer(),
+            json[callbackDataField] != null -> CallbackDataInlineKeyboardButton.serializer()
-        PayInlineKeyboardButton.serializer(),
+            json[loginUrlField] != null -> LoginURLInlineKeyboardButton.serializer()
-        SwitchInlineQueryInlineKeyboardButton.serializer(),
+            json[payField] != null -> PayInlineKeyboardButton.serializer()
-        SwitchInlineQueryCurrentChatInlineKeyboardButton.serializer(),
+            json[switchInlineQueryField] != null -> SwitchInlineQueryInlineKeyboardButton.serializer()
-        URLInlineKeyboardButton.serializer()
+            json[switchInlineQueryCurrentChatField] != null -> SwitchInlineQueryCurrentChatInlineKeyboardButton.serializer()
-    )
+            json[urlField] != null -> URLInlineKeyboardButton.serializer()
+            else -> throw IllegalArgumentException("Can't find correct serializer for inline button serialized as $json")
+        }
+    }
 
     override fun deserialize(decoder: Decoder): InlineKeyboardButton {
         val json = JsonElementSerializer.deserialize(decoder)
 
-        serializers.forEach {
+        return Json.nonstrict.fromJson(resolveSerializer(json.jsonObject), json)
-            try {
-                return Json.nonstrict.fromJson(it, json)
-            } catch (e: SerializationException) {
-                e
-            }
-        }
-
-        throw IllegalArgumentException("There is no known type of serializer for \"$json\" as inline button")
     }
 
     override fun serialize(encoder: Encoder, obj: InlineKeyboardButton) {