From 70195bd9040f34c813bb425308f47011ec8e67b7 Mon Sep 17 00:00:00 2001
From: Dan Cojocaru <dancojocaru2010@hotmail.com>
Date: Mon, 20 Dec 2021 03:37:30 +0200
Subject: [PATCH] Generate constructors map as static

---
 bin/tdlib_gen.dart | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/bin/tdlib_gen.dart b/bin/tdlib_gen.dart
index 1bb42dc..78ee759 100644
--- a/bin/tdlib_gen.dart
+++ b/bin/tdlib_gen.dart
@@ -240,26 +240,28 @@ abstract class TdBase {
     return 'td::TdBase()';
   }
 
-  static TdBase? fromJson(Map<String, dynamic>? json) {
-    if (json == null) {
-      return null;
-    }
-    final type = json['@type'] as String;
-    final constructors = {
+  static final constructors = {
 """;
+
   for (final o in scheme.objects) {
     final normName = o.name.pascalCase;
     result += '''
-      '${o.name}': (json) => o.$normName.fromJson(json),
+    '${o.name}': (json) => o.$normName.fromJson(json),
 ''';
   }
 
-  result += '''
-    };
+  result += """
+  };
+
+  static TdBase? fromJson(Map<String, dynamic>? json) {
+    if (json == null) {
+      return null;
+    }
+    final type = json['@type'] as String;
     return constructors[type]!(json);
   }
 }
-''';
+""";
   return result;
 }
 String makeAbstractFile(TlSchema scheme) {