feat: Support non-freezed classes by ignoring previous requirement fo…

…r factory ctors (#82)

packages/luthor_generator/build.yaml

@@ -1,7 +1,7 @@
 builders:
   luthor:
     import: "package:luthor_generator/builder.dart"
-    builder_factories: [ "luthorBuilder" ]
-    build_extensions: { ".dart": [ ".luthor.g.part" ] }
+    builder_factories: ["luthorBuilder"]
+    build_extensions: { ".dart": [".luthor.g.part"] }
     auto_apply: dependents
     build_to: cache

packages/luthor_generator/example/lib/another_sample.dart

@@ -15,18 +15,13 @@ class AnotherSample with _$AnotherSample {
     @HasMin(8) required String password,
   }) = _AnotherSample;
 
-  static SchemaValidationResult<AnotherSample> validate(
-    Map<String, dynamic> json,
-  ) =>
-      _$AnotherSampleValidate(json);
-
   factory AnotherSample.fromJson(Map<String, dynamic> json) =>
       _$AnotherSampleFromJson(json);
 }
 
 void main() {
   final json = {'id': 0};
-  final result = AnotherSample.validate(json);
+  final result = $AnotherSampleValidate(json);
   switch (result) {
     case SchemaValidationSuccess(data: final data):
       print(data.validateSelf());

packages/luthor_generator/example/lib/another_sample.freezed.dart

@@ -12,7 +12,7 @@ part of 'another_sample.dart';
 T _$identity<T>(T value) => value;
 
 final _privateConstructorUsedError = UnsupportedError(
-    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#custom-getters-and-methods');
+    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#adding-getters-and-methods-to-our-models');
 
 AnotherSample _$AnotherSampleFromJson(Map<String, dynamic> json) {
   return _AnotherSample.fromJson(json);
@@ -168,8 +168,7 @@ class _$AnotherSampleImpl implements _AnotherSample {
   }
 
   @override
-  // ignore: non_nullable_equals_parameter
-  bool operator ==(dynamic other) {
+  bool operator ==(Object other) {
     return identical(this, other) ||
         (other.runtimeType == runtimeType &&
             other is _$AnotherSampleImpl &&

packages/luthor_generator/example/lib/sample.dart

@@ -45,14 +45,11 @@ class Sample with _$Sample {
     required List<int> numbers,
   }) = _Sample;
 
-  static SchemaValidationResult<Sample> validate(Map<String, dynamic> json) =>
-      _$SampleValidate(json);
-
   factory Sample.fromJson(Map<String, dynamic> json) => _$SampleFromJson(json);
 }
 
 void main() {
-  final result = Sample.validate({});
+  final result = $SampleValidate({});
   switch (result) {
     case SchemaValidationError(errors: final errors):
       print('Error: ');
@@ -65,7 +62,7 @@ void main() {
   }
 
   print('*' * 10);
-  final result2 = Sample.validate({
+  final result2 = $SampleValidate({
     "minAndMaxInt": 1,
     "minAndMaxDouble": 1.0,
     "minAndMaxNumber": 1,
@@ -83,7 +80,7 @@ void main() {
   }
 
   print('*' * 10);
-  final result3 = Sample.validate({
+  final result3 = $SampleValidate({
     "minAndMaxInt": 5,
     "minAndMaxDouble": 5.0,
     "minAndMaxNumber": 5,

packages/luthor_generator/example/lib/sample.freezed.dart

@@ -12,7 +12,7 @@ part of 'sample.dart';
 T _$identity<T>(T value) => value;
 
 final _privateConstructorUsedError = UnsupportedError(
-    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#custom-getters-and-methods');
+    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#adding-getters-and-methods-to-our-models');
 
 Sample _$SampleFromJson(Map<String, dynamic> json) {
   return _Sample.fromJson(json);
@@ -546,7 +546,7 @@ class _$SampleImpl implements _Sample {
   }
 
   @override
-  bool operator ==(dynamic other) {
+  bool operator ==(Object other) {
     return identical(this, other) ||
         (other.runtimeType == runtimeType &&
             other is _$SampleImpl &&

packages/luthor_generator/example/lib/without_freezed.dart

@@ -0,0 +1,21 @@
+import 'package:luthor/luthor.dart';
+
+part 'without_freezed.g.dart';
+
+@luthor
+class WithoutFreezed {
+  final String name;
+  final int age;
+
+  const WithoutFreezed({
+    @isEmail required this.name,
+    required this.age,
+  });
+
+  factory WithoutFreezed.fromJson(Map<String, dynamic> json) {
+    return WithoutFreezed(
+      name: json['name'] as String,
+      age: json['age'] as int,
+    );
+  }
+}

packages/luthor_generator/lib/generators/luthor_generator.dart

@@ -28,11 +28,14 @@ class LuthorGenerator extends GeneratorForAnnotation<Luthor> {
     }
 
     final name = element.name;
-    final constructor =
-        element.constructors.firstWhereOrNull((c) => c.isFactory);
-    if (constructor == null) {
+    final constructor = element.constructors.first;
+
+    final hasFromJsonCtor = element.constructors.any(
+      (element) => element.isFactory && element.name == 'fromJson',
+    );
+    if (hasFromJsonCtor) {
       throw InvalidGenerationSourceError(
-        'Luthor can only be applied to classes with a factory constructor.',
+        'Luthor can only be applied to classes with a factory fromJson constructor',
         element: element,
       );
     }