feat: Add support @Extras()

generator/CHANGELOG.md

@@ -1,5 +1,15 @@
 # Changelog
 
+## 8.1.0
+
+- Added `@Extras` to pass extra options to dio requests, response, transformer and interceptors.
+
+  Example :
+  ```dart
+  @http.POST('/path/')
+  Future<String> myMethod(@Extras() Map<String, dynamic> extras);
+  ```
+
 ## 8.0.6
 
 - @useResult

generator/lib/src/generator.dart

@@ -2159,7 +2159,7 @@ ${bodyName.displayName} == null
     String localExtraVar,
   ) {
     blocks.add(
-      declareConst(localExtraVar)
+      declareFinal(localExtraVar)
           .assign(
             literalMap(
               _getMethodAnnotations(m, retrofit.Extra)
@@ -2195,6 +2195,51 @@ ${bodyName.displayName} == null
           )
           .statement,
     );
+
+    final extraMap = _getAnnotations(m, retrofit.Extras);
+    for (final p in extraMap.keys) {
+      final type = p.type;
+      final displayName = p.displayName;
+      final Expression value;
+      if (_isBasicType(type) || type.isDartCoreList || type.isDartCoreMap) {
+        value = refer(displayName);
+      } else if (_typeChecker(ProtobufEnum).isSuperTypeOf(type)) {
+        value = type.nullabilitySuffix == NullabilitySuffix.question
+            ? refer(p.displayName).nullSafeProperty('value')
+            : refer(p.displayName).property('value');
+      } else {
+        switch (clientAnnotation.parser) {
+          case retrofit.Parser.JsonSerializable:
+            value = p.type.nullabilitySuffix == NullabilitySuffix.question
+                ? refer(displayName).nullSafeProperty('toJson').call([])
+                : refer(displayName).property('toJson').call([]);
+            break;
+          case retrofit.Parser.MapSerializable:
+            value = p.type.nullabilitySuffix == NullabilitySuffix.question
+                ? refer(displayName).nullSafeProperty('toMap').call([])
+                : refer(displayName).property('toMap').call([]);
+            break;
+          case retrofit.Parser.DartJsonMapper:
+            value = refer(displayName);
+            break;
+          case retrofit.Parser.FlutterCompute:
+            value = refer(
+              'await compute(serialize${_displayString(p.type)}, ${p.displayName})',
+            );
+            break;
+        }
+      }
+
+      final emitter = DartEmitter(useNullSafetySyntax: true);
+      final buffer = StringBuffer();
+      value.accept(emitter, buffer);
+      if (type.nullabilitySuffix == NullabilitySuffix.question) {
+        refer('?? <String,dynamic>{}').accept(emitter, buffer);
+      }
+      final expression = refer(buffer.toString());
+
+      blocks.add(refer('$localExtraVar.addAll').call([expression]).statement);
+    }
   }
 
   bool _missingToJson(ClassElement ele) {

generator/pubspec.yaml

@@ -6,7 +6,7 @@ topics:
   - build-runner
   - codegen
   - api
-version: 8.0.3
+version: 8.1.0
 environment:
   sdk: '>=2.19.0 <4.0.0'
 
@@ -17,7 +17,7 @@ dependencies:
   code_builder: ^4.4.0
   dart_style: ^2.3.0
   dio: ^5.0.0
-  retrofit: ^4.0.2
+  retrofit: ^4.1.0
   source_gen: ^1.3.0
   tuple: ^2.0.1
   protobuf: ^3.1.0

generator/test/src/generator_test_src.dart

@@ -46,7 +46,7 @@ abstract class BaseUrl {}
 
 @ShouldGenerate(
   '''
-    const _extra = <String, dynamic>{};
+    final _extra = <String, dynamic>{};
 ''',
   contains: true,
 )
@@ -59,7 +59,7 @@ abstract class EmptyExtras {
 
 @ShouldGenerate(
   '''
-    const _extra = <String, dynamic>{'key': 'value'};
+    final _extra = <String, dynamic>{'key': 'value'};
   ''',
   contains: true,
 )
@@ -72,7 +72,7 @@ abstract class ExtrasWithPrimitiveValues {
 
 @ShouldGenerate(
   '''
-    const _extra = <String, dynamic>{
+    final _extra = <String, dynamic>{
       'key': 'value',
       'key2': 'value2',
     };
@@ -89,7 +89,7 @@ abstract class MultipleExtrasWithPrimitiveValues {
 
 @ShouldGenerate(
   '''
-    const _extra = <String, dynamic>{'key': CustomConstant()};
+    final _extra = <String, dynamic>{'key': CustomConstant()};
 ''',
   contains: true,
 )
@@ -100,6 +100,50 @@ abstract class ExtrasWithCustomConstant {
   Future<void> list();
 }
 
+@ShouldGenerate(
+  '''
+    final _extra = <String, dynamic>{};
+    _extra.addAll(extras ?? <String, dynamic>{});
+''',
+  contains: true,
+)
+@RestApi()
+abstract class TestExtrasWithNullable {
+  @GET('/list/')
+  Future<void> list(@Extras() Map<String, dynamic>? extras);
+}
+
+@ShouldGenerate(
+  '''
+    final _extra = <String, dynamic>{'key': 'value'};
+    _extra.addAll(extras);
+  ''',
+  contains: true,
+)
+@RestApi()
+abstract class TestExtrasWithMap {
+  @GET('/list/')
+  @Extra({'key': 'value'})
+  Future<void> list(
+      @Extras() Map<String, dynamic> extras,
+      );
+}
+
+@ShouldGenerate(
+  '''
+    final _extra = <String, dynamic>{};
+    _extra.addAll(u.toJson());
+  ''',
+  contains: true,
+)
+@RestApi()
+abstract class TestExtrasWithObject {
+  @GET('/list/')
+  Future<void> list(
+      @Extras() User u,
+  );
+}
+
 class CustomConstant {
   const CustomConstant();
 }

retrofit/CHANGELOG.md

@@ -1,5 +1,16 @@
 # Changelog
 
+## 4.1.0
+
+- Added `@Extras` to pass extra options to dio requests, response, transformer and interceptors.
+
+  Example :
+
+  ```dart
+  @http.POST('/path/')
+  Future<String> myMethod(@Extras() Map<String, dynamic> extras);
+  ```
+
 ## 4.0.0
 
 - Update dio to ^5.0.0

retrofit/lib/dio.dart

@@ -10,6 +10,18 @@ class Extra {
   const Extra(this.data);
 }
 
+/// Extra data that will be passed to dio's request, response, transformer and interceptors.
+/// Simple Example:
+///
+///```
+/// @GET("/get")
+/// Future<String> foo(@Extras() Map<String, dynamic> extras)
+///```
+@immutable
+class Extras {
+  const Extras();
+}
+
 @immutable
 class CancelRequest {
   const CancelRequest();

retrofit/pubspec.yaml

@@ -2,7 +2,7 @@ name: retrofit
 description: retrofit.dart is an dio client generator using source_gen and inspired by Chopper and Retrofit.
 homepage: https://mings.in/retrofit.dart/
 repository: https://github.com/trevorwang/retrofit.dart/
-version: 4.0.2
+version: 4.1.0
 
 environment:
   sdk: '>=2.17.0 <4.0.0'