feat: add Int32 serializer

built_value/lib/serializer.dart

@@ -7,6 +7,7 @@ import 'package:built_collection/src/internal/hash.dart';
 import 'package:built_value/src/big_int_serializer.dart';
 import 'package:built_value/src/date_time_serializer.dart';
 import 'package:built_value/src/duration_serializer.dart';
+import 'package:built_value/src/int32_serializer.dart';
 import 'package:built_value/src/int64_serializer.dart';
 import 'package:built_value/src/json_object_serializer.dart';
 import 'package:built_value/src/num_serializer.dart';
@@ -67,6 +68,7 @@ abstract class Serializers {
  ..add(DoubleSerializer())
  ..add(DurationSerializer())
  ..add(IntSerializer())
+ ..add(Int32Serializer())
  ..add(Int64Serializer())
  ..add(JsonObjectSerializer())
  ..add(NullSerializer())

built_value/lib/src/int32_serializer.dart

@@ -0,0 +1,27 @@
+// Copyright (c) 2023, Google Inc. Please see the AUTHORS file for details.
+// All rights reserved. Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+import 'package:built_collection/built_collection.dart';
+import 'package:built_value/serializer.dart';
+import 'package:fixnum/fixnum.dart';
+
+class Int32Serializer implements PrimitiveSerializer<Int32> {
+ final bool structured = false;
+ @override
+ final Iterable<Type> types = BuiltList<Type>([Int32]);
+ @override
+ final String wireName = 'Int32';
+
+ @override
+ Object serialize(Serializers serializers, Int32 int32,
+ {FullType specifiedType = FullType.unspecified}) {
+ return int32.toInt();
+ }
+
+ @override
+ Int32 deserialize(Serializers serializers, Object? serialized,
+ {FullType specifiedType = FullType.unspecified}) {
+ return Int32(serialized as int);
+ }
+}

built_value/test/int32_serializer_test.dart

@@ -0,0 +1,46 @@
+// Copyright (c) 2023, Google Inc. Please see the AUTHORS file for details.
+// All rights reserved. Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+import 'dart:convert';
+
+import 'package:built_value/serializer.dart';
+import 'package:fixnum/fixnum.dart';
+import 'package:test/test.dart';
+
+void main() {
+ var serializers = Serializers();
+
+ group('int32 with known specifiedType', () {
+ var data = Int32.MAX_VALUE;
+ var serialized = Int32.MAX_VALUE.toInt();
+ var specifiedType = const FullType(Int32);
+
+ test('can be serialized', () {
+ expect(serializers.serialize(data, specifiedType: specifiedType),
+ serialized);
+ });
+
+ test('can be deserialized', () {
+ expect(serializers.deserialize(serialized, specifiedType: specifiedType),
+ data);
+ });
+ });
+
+ group('int32 with unknown specifiedType', () {
+ var data = Int32.MIN_VALUE;
+ var serialized =
+ json.decode(json.encode(['Int32', Int32.MIN_VALUE.toInt()])) as Object;
+ var specifiedType = FullType.unspecified;
+
+ test('can be serialized', () {
+ expect(serializers.serialize(data, specifiedType: specifiedType),
+ serialized);
+ });
+
+ test('can be deserialized', () {
+ expect(serializers.deserialize(serialized, specifiedType: specifiedType),
+ data);
+ });
+ });
+}