[ffigen] Remove most of the Config extension

pkgs/ffigen/lib/src/code_generator/library.dart

@@ -8,7 +8,7 @@ import 'package:yaml_edit/yaml_edit.dart';
 
 import '../code_generator.dart';
 import '../code_generator/utils.dart';
-import '../config_provider/config_types.dart';
+import '../config_provider/config.dart';
 import '../context.dart';
 
 import 'writer.dart';
@@ -27,15 +27,19 @@ class Library {
     required List<Binding> bindings,
     required Context context,
   }) => Library(
-    description: context.config.wrapperDocComment,
+    description: switch (context.config.output.style) {
+      final DynamicLibraryBindings e => e.wrapperDocComment,
+      _ => null,
+    },
     bindings: bindings,
-    header: context.config.preamble,
+    header: context.config.output.preamble,
     generateForPackageObjectiveC:
         // ignore: deprecated_member_use_from_same_package
         context.config.objectiveC?.generateForPackageObjectiveC ?? false,
-    libraryImports: context.config.libraryImports.values.toList(),
+    // ignore: deprecated_member_use_from_same_package
+    libraryImports: context.config.libraryImports,
     silenceEnumWarning: context.config.enums.silenceWarning,
-    nativeEntryPoints: context.config.entryPoints
+    nativeEntryPoints: context.config.headers.entryPoints
         .map((uri) => uri.toFilePath())
         .toList(),
     context: context,
@@ -54,13 +58,18 @@ class Library {
     // Seperate bindings which require lookup.
     final lookupBindings = <LookUpBinding>[];
     final nativeBindings = <LookUpBinding>[];
-    FfiNativeConfig? nativeConfig;
+    String? nativeAssetId;
+
+    final outputStyle = context.config.output.style;
+    final outputStyleAssetId = outputStyle is NativeExternalBindings
+        ? outputStyle.assetId
+        : null;
 
     for (final binding in bindings.whereType<LookUpBinding>()) {
       final loadFromNativeAsset = binding.loadFromNativeAsset;
 
       // At the moment, all bindings share their native config.
-      if (loadFromNativeAsset) nativeConfig = context.config.ffiNativeConfig;
+      if (loadFromNativeAsset) nativeAssetId = outputStyleAssetId;
 
       (loadFromNativeAsset ? nativeBindings : lookupBindings).add(binding);
     }
@@ -69,7 +78,7 @@ class Library {
     final writer = Writer(
       lookUpBindings: lookupBindings,
       ffiNativeBindings: nativeBindings,
-      nativeAssetId: nativeConfig?.assetId,
+      nativeAssetId: nativeAssetId,
       noLookUpBindings: noLookUpBindings,
       classDocComment: description,
       header: header,

pkgs/ffigen/lib/src/code_generator/objc_built_in_functions.dart

@@ -220,9 +220,9 @@ class ObjCBuiltInFunctions {
   // a hash of parts of the config.
   static String _libraryIdFromConfigHash(Config config) => fnvHash32(
     [
-      ...config.entryPoints,
-      config.output,
-      config.outputObjC,
+      ...config.headers.entryPoints,
+      config.output.dartFile,
+      config.output.objCFile,
     ].map((uri) => path.basename(uri.toFilePath())).join('\n'),
   ).toRadixString(36);
 }

pkgs/ffigen/lib/src/config_provider/config.dart

@@ -647,8 +647,7 @@ final class Output {
   /// The output Objective-C file for the generated Objective-C bindings.
   final Uri? objectiveCFile;
 
-  Uri get _objectiveCFile =>
-      objectiveCFile ?? Uri.file('${dartFile.toFilePath()}.m');
+  Uri get objCFile => objectiveCFile ?? Uri.file('${dartFile.toFilePath()}.m');
 
   /// The config for the symbol file.
   final SymbolFile? symbolFile;
@@ -717,74 +716,8 @@ final class DynamicLibraryBindings implements BindingStyle {
 }
 
 extension type Config(FfiGenerator ffiGen) implements FfiGenerator {
-  ObjectiveC get _objectiveC => ffiGen.objectiveC ?? const ObjectiveC();
-  bool get includeTransitiveObjCInterfaces =>
-      _objectiveC.interfaces.includeTransitive;
-  bool get includeTransitiveObjCProtocols =>
-      _objectiveC.protocols.includeTransitive;
-  bool get includeTransitiveObjCCategories =>
-      _objectiveC.categories.includeTransitive;
-  String? Function(Declaration declaration) get interfaceModule =>
-      (declaration) => _objectiveC.interfaces.module(declaration);
-  String? Function(Declaration declaration) get protocolModule =>
-      (declaration) => _objectiveC.protocols.module(declaration);
-  bool get generateForPackageObjectiveC =>
-      // ignore: deprecated_member_use_from_same_package
-      _objectiveC.generateForPackageObjectiveC;
-  Categories get objcCategories => _objectiveC.categories;
-  Interfaces get objcInterfaces => _objectiveC.interfaces;
-  Protocols get objcProtocols => _objectiveC.protocols;
-  ExternalVersions get externalVersions => _objectiveC.externalVersions;
   // ignore: deprecated_member_use_from_same_package
   Map<String, ImportedType> get importedTypesByUsr => ffiGen.importedTypesByUsr;
-  String get wrapperName =>
-      (ffiGen.output.style as DynamicLibraryBindings).wrapperName;
-
-  String? get wrapperDocComment => switch (ffiGen.output.style) {
-    final DynamicLibraryBindings e => e.wrapperDocComment,
-    _ => null,
-  };
-
-  FfiNativeConfig get ffiNativeConfig => FfiNativeConfig(
-    enabled: ffiGen.output.style is NativeExternalBindings,
-    assetId: switch (ffiGen.output.style) {
-      final NativeExternalBindings e => e.assetId,
-      _ => null,
-    },
-  );
-
-  bool shouldIncludeHeader(Uri header) => ffiGen.headers.include(header);
-
-  bool get ignoreSourceErrors => ffiGen.headers.ignoreSourceErrors;
-
-  List<String>? get compilerOpts => ffiGen.headers.compilerOptions;
-
-  List<Uri> get entryPoints => ffiGen.headers.entryPoints;
-
-  Uri get output => ffiGen.output.dartFile;
-
-  Uri get outputObjC => ffiGen.output._objectiveCFile;
-
-  BindingStyle get outputStyle => ffiGen.output.style;
-
-  SymbolFile? get symbolFile => ffiGen.output.symbolFile;
-
-  bool get sort => ffiGen.output.sort;
-
-  CommentType get commentType => ffiGen.output.commentType;
-
-  String? get preamble => ffiGen.output.preamble;
-
-  bool get formatOutput => ffiGen.output.format;
-
-  // Override declarative user spec with what FFIgen internals expect.
-  Map<String, LibraryImport> get libraryImports =>
-      Map<String, LibraryImport>.fromEntries(
-        // ignore: deprecated_member_use_from_same_package
-        ffiGen.libraryImports.map(
-          (import) => MapEntry<String, LibraryImport>(import.name, import),
-        ),
-      );
 
   // Override declarative user spec with what FFIgen internals expect.
   Map<String, ImportedType> get typedefTypeMappings =>
@@ -820,6 +753,4 @@ extension type Config(FfiGenerator ffiGen) implements FfiGenerator {
           (import) => MapEntry<String, ImportedType>(import.nativeType, import),
         ),
       );
-
-  Language get language => objectiveC != null ? Language.objc : Language.c;
 }

pkgs/ffigen/lib/src/context.dart

@@ -26,7 +26,8 @@ class Context {
   bool hasSourceErrors = false;
   final reportedCommentRanges = <((String, int), (String, int))>{};
   final libs = LibraryImports();
-  late final compilerOpts = config.compilerOpts ?? defaultCompilerOpts(logger);
+  late final compilerOpts =
+      config.headers.compilerOptions ?? defaultCompilerOpts(logger);
   final Scope rootScope = Scope.createRoot('root');
   final Scope rootObjCScope = Scope.createRoot('objc_root');
   late final ExtraSymbols extraSymbols;

pkgs/ffigen/lib/src/ffigen.dart

@@ -28,13 +28,13 @@ extension FfiGenGenerator on FfiGenerator {
     final library = parse(context);
 
     // Generate files for the parsed bindings.
-    final gen = File(config.output.toFilePath());
-    library.generateFile(gen, format: config.formatOutput);
+    final gen = File(config.output.dartFile.toFilePath());
+    library.generateFile(gen, format: config.ffiGen.output.format);
     logger.info(
       _successPen('Finished, Bindings generated in ${gen.absolute.path}'),
     );
 
-    final objCGen = File(config.outputObjC.toFilePath());
+    final objCGen = File(config.output.objCFile.toFilePath());
     if (library.generateObjCFile(objCGen)) {
       logger.info(
         _successPen(
@@ -44,11 +44,12 @@ extension FfiGenGenerator on FfiGenerator {
       );
     }
 
-    if (config.symbolFile != null) {
-      final symbolFileGen = File(config.symbolFile!.output.toFilePath());
+    final symbolFile = config.output.symbolFile;
+    if (symbolFile != null) {
+      final symbolFileGen = File(symbolFile.output.toFilePath());
       library.generateSymbolOutputFile(
         symbolFileGen,
-        config.symbolFile!.importPath.toString(),
+        symbolFile.importPath.toString(),
       );
       logger.info(
         _successPen(

pkgs/ffigen/lib/src/header_parser/parser.dart

@@ -50,12 +50,12 @@ List<Binding> parseToBindings(Context context) {
   Pointer<Pointer<Utf8>> clangCmdArgs = nullptr;
   final compilerOpts = <String>[
     // Add compiler opt for comment parsing for clang based on config.
-    if (config.commentType.length != CommentLength.none &&
-        config.commentType.style == CommentStyle.any)
+    if (config.output.commentType.length != CommentLength.none &&
+        config.output.commentType.style == CommentStyle.any)
       strings.fparseAllComments,
 
     // If the config targets Objective C, add a compiler opt for it.
-    if (config.language == Language.objc) ...[
+    if (config.objectiveC != null) ...[
       ...strings.clangLangObjC,
       ..._findObjectiveCSysroot(),
     ],
@@ -72,12 +72,12 @@ List<Binding> parseToBindings(Context context) {
   final bindings = <Binding>{};
 
   // Log all headers for user.
-  context.logger.info('Input Headers: ${config.entryPoints}');
+  context.logger.info('Input Headers: ${config.headers.entryPoints}');
 
   final tuList = <Pointer<clang_types.CXTranslationUnitImpl>>[];
 
   // Parse all translation units from entry points.
-  for (final headerLocationUri in config.entryPoints) {
+  for (final headerLocationUri in config.headers.entryPoints) {
     final headerLocation = headerLocationUri.toFilePath();
     context.logger.fine('Creating TranslationUnit for header: $headerLocation');
 
@@ -114,11 +114,11 @@ List<Binding> parseToBindings(Context context) {
       'The compiler found warnings/errors in source files.',
     );
     context.logger.warning('This will likely generate invalid bindings.');
-    if (config.ignoreSourceErrors) {
+    if (config.headers.ignoreSourceErrors) {
       context.logger.warning(
         'Ignored source errors. (User supplied --ignore-source-errors)',
       );
-    } else if (config.language == Language.objc) {
+    } else if (config.objectiveC != null) {
       context.logger.warning('Ignored source errors. (ObjC)');
     } else {
       context.logger.severe(
@@ -219,7 +219,7 @@ List<Binding> transformBindings(List<Binding> bindings, Context context) {
 
   /// Sort bindings.
   var finalBindingsList = finalBindings.toList();
-  if (config.sort) {
+  if (config.output.sort) {
     finalBindingsList = visit(
       context,
       SorterVisitation(finalBindings, SorterVisitation.nameSortKey),
@@ -283,7 +283,7 @@ void _nameAllSymbols(Context context, Set<Binding> bindings) {
 }
 
 ExtraSymbols _createExtraSymbols(Context context) {
-  final bindingStyle = context.config.outputStyle;
+  final bindingStyle = context.config.output.style;
   Symbol? wrapperClassName;
   Symbol? lookupFuncName;
   if (bindingStyle is DynamicLibraryBindings) {

pkgs/ffigen/lib/src/header_parser/sub_parsers/api_availability.dart

@@ -27,7 +27,7 @@ class ApiAvailability {
     this.alwaysUnavailable = false,
     this.ios,
     this.macos,
-    required ExternalVersions externalVersions,
+    required ExternalVersions? externalVersions,
   }) {
     availability = _getAvailability(externalVersions);
   }
@@ -88,7 +88,7 @@ class ApiAvailability {
       alwaysUnavailable: alwaysUnavailable.value != 0,
       ios: ios,
       macos: macos,
-      externalVersions: context.config.externalVersions,
+      externalVersions: context.config.objectiveC?.externalVersions,
     );
 
     for (var i = 0; i < platformsLength; ++i) {
@@ -101,9 +101,9 @@ class ApiAvailability {
     return api;
   }
 
-  Availability _getAvailability(ExternalVersions externalVersions) {
-    final macosVer = _normalizeVersions(externalVersions.macos);
-    final iosVer = _normalizeVersions(externalVersions.ios);
+  Availability _getAvailability(ExternalVersions? externalVersions) {
+    final macosVer = _normalizeVersions(externalVersions?.macos);
+    final iosVer = _normalizeVersions(externalVersions?.ios);
 
     // If no versions are specified, everything is available.
     if (iosVer == null && macosVer == null) {

pkgs/ffigen/lib/src/header_parser/sub_parsers/functiondecl_parser.dart

@@ -3,6 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import '../../code_generator.dart';
+import '../../config_provider/config.dart';
 import '../../config_provider/config_types.dart';
 import '../../context.dart';
 import '../clang_bindings/clang_bindings.dart' as clang_types;
@@ -151,7 +152,7 @@ List<Func> parseFunctionDeclaration(
           exposeFunctionTypedefs: config.functions.includeTypedef(decl),
           isLeaf: config.functions.isLeaf(decl),
           objCReturnsRetained: objCReturnsRetained,
-          loadFromNativeAsset: config.ffiNativeConfig.enabled,
+          loadFromNativeAsset: config.output.style is NativeExternalBindings,
         ),
       );
     }

pkgs/ffigen/lib/src/header_parser/sub_parsers/macro_parser.dart

@@ -198,7 +198,7 @@ File createFileForMacros(Context context) {
 
   // Write file contents.
   final sb = StringBuffer();
-  for (final h in context.config.entryPoints) {
+  for (final h in context.config.headers.entryPoints) {
     final fullHeaderPath = File(h.toFilePath()).absolute.path;
     sb.writeln('#include "$fullHeaderPath"');
   }

pkgs/ffigen/lib/src/header_parser/sub_parsers/objccategorydecl_parser.dart

@@ -15,7 +15,11 @@ ObjCCategory? parseObjCCategoryDeclaration(
   Context context,
   clang_types.CXCursor cursor,
 ) {
-  final config = context.config;
+  final objcCategories = context.config.objectiveC?.categories;
+  if (objcCategories == null) {
+    return null;
+  }
+
   final logger = context.logger;
   final usr = cursor.usr();
   final name = cursor.spelling();
@@ -58,7 +62,7 @@ ObjCCategory? parseObjCCategoryDeclaration(
   final category = ObjCCategory(
     usr: usr,
     originalName: name,
-    name: config.objcCategories.rename(decl),
+    name: objcCategories.rename(decl),
     parent: parentInterface,
     dartDoc: getCursorDocComment(
       context,
@@ -84,15 +88,15 @@ ObjCCategory? parseObjCCategoryDeclaration(
           context,
           child,
           decl,
-          config.objcCategories,
+          objcCategories,
         );
         category.addMethod(getter);
         category.addMethod(setter);
         break;
       case clang_types.CXCursorKind.CXCursor_ObjCInstanceMethodDecl:
       case clang_types.CXCursorKind.CXCursor_ObjCClassMethodDecl:
         category.addMethod(
-          parseObjCMethod(context, child, decl, config.objcCategories),
+          parseObjCMethod(context, child, decl, objcCategories),
         );
         break;
     }