MethodEqualityOperatorBuilder function

Method MethodEqualityOperatorBuilder({ required String className, required List<FieldInfo> fields, required DartEmitter emitter, })

Implementation

Method MethodEqualityOperatorBuilder({
  required String className,
  required List<FieldInfo> fields,
  required DartEmitter emitter,
}) {
  final equalityChecks = fields.map((field) {
    final fieldType = field.type;

    if (fieldType.startsWith('List<')) {
      final listEqualsRef = FlutterTypes.foundation.listEquals([
        refer(field.name),
        refer('other.${field.name}'),
      ]);

      return listEqualsRef.accept(emitter);

      // return 'listEquals(other.${field.name}, ${field.name})';
    } else if (fieldType.startsWith('Map<')) {
      final mapEqualsRef = FlutterTypes.foundation.mapEquals([
        refer(field.name),
        refer('other.${field.name}'),
      ]);

      return mapEqualsRef.accept(emitter);
      // return 'mapEquals(other.${field.name}, ${field.name})';
    } else if (fieldType.startsWith('Set<')) {
      final setEqualsRef = FlutterTypes.foundation.setEquals([
        refer(field.name),
        refer('other.${field.name}'),
      ]);

      return setEqualsRef.accept(emitter);
      // return 'setEquals(other.${field.name}, ${field.name})';
    }

    return 'other.${field.name} == ${field.name}';
  }).join(' && ');

  return Method((b) => b
    ..name = 'operator =='
    ..annotations.add(refer('override'))
    ..returns = refer('bool')
    ..requiredParameters.add(Parameter((b) => b
      ..name = 'other'
      ..type = refer('Object')))
    ..body = Code('''
          if (identical(this, other)) return true;

          return other is $className && $equalityChecks;
        '''));
}