[deps] Bump native assets dependencies (#145612)

Roll of a bunch of breaking changes from the native_assets_builder and
native_assets_cli upstream. Most notably:

* https://github.com/dart-lang/native/pull/946
* https://github.com/dart-lang/native/pull/1018
* https://github.com/dart-lang/native/pull/1019

This PR also updates the template in `flutter create
--template=package_ffi` to use the rewritten API.

This PR does not change any functionality in Flutter.

For reference, the same roll in the Dart SDK:

* https://dart-review.googlesource.com/c/sdk/+/357605
* https://dart-review.googlesource.com/c/sdk/+/357623

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] All existing and new tests are passing.

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#overview
[Tree Hygiene]: https://github.com/flutter/flutter/wiki/Tree-hygiene
[test-exempt]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#handling-breaking-changes
[Discord]: https://github.com/flutter/flutter/wiki/Chat

packages/flutter_tools/lib/src/isolated/native_assets/android/native_assets.dart

@@ -4,10 +4,7 @@
 
 import 'package:native_assets_builder/native_assets_builder.dart'
     hide NativeAssetsBuildRunner;
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    as native_assets_cli;
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    hide BuildMode;
+import 'package:native_assets_cli/native_assets_cli_internal.dart';
 
 import '../../../android/android_sdk.dart';
 import '../../../base/common.dart';
@@ -30,7 +27,7 @@ Future<Uri?> dryRunNativeAssetsAndroid({
     return null;
   }
 
-  final Uri buildUri_ = nativeAssetsBuildUri(projectUri, OS.android);
+  final Uri buildUri_ = nativeAssetsBuildUri(projectUri, OSImpl.android);
   final Iterable<KernelAsset> nativeAssetPaths =
       await dryRunNativeAssetsAndroidInternal(
     fileSystem,
@@ -50,20 +47,20 @@ Future<Iterable<KernelAsset>> dryRunNativeAssetsAndroidInternal(
   Uri projectUri,
   NativeAssetsBuildRunner buildRunner,
 ) async {
-  const OS targetOS = OS.android;
+  const OSImpl targetOS = OSImpl.android;
 
   globals.logger.printTrace('Dry running native assets for $targetOS.');
   final DryRunResult dryRunResult = await buildRunner.dryRun(
-    linkModePreference: LinkModePreference.dynamic,
+    linkModePreference: LinkModePreferenceImpl.dynamic,
     targetOS: targetOS,
     workingDirectory: projectUri,
     includeParentEnvironment: true,
   );
   ensureNativeAssetsBuildSucceed(dryRunResult);
-  final List<Asset> nativeAssets = dryRunResult.assets;
+  final List<AssetImpl> nativeAssets = dryRunResult.assets;
   ensureNoLinkModeStatic(nativeAssets);
   globals.logger.printTrace('Dry running native assets for $targetOS done.');
-  final Map<Asset, KernelAsset> assetTargetLocations =
+  final Map<AssetImpl, KernelAsset> assetTargetLocations =
       _assetTargetLocations(nativeAssets);
   return assetTargetLocations.values;
 }
@@ -80,7 +77,7 @@ Future<(Uri? nativeAssetsYaml, List<Uri> dependencies)>
   required FileSystem fileSystem,
   required int targetAndroidNdkApi,
 }) async {
-  const OS targetOS = OS.android;
+  const OSImpl targetOS = OSImpl.android;
   final Uri buildUri_ = nativeAssetsBuildUri(projectUri, targetOS);
   if (!await nativeBuildRequired(buildRunner)) {
     final Uri nativeAssetsYaml = await writeNativeAssetsYaml(
@@ -92,21 +89,21 @@ Future<(Uri? nativeAssetsYaml, List<Uri> dependencies)>
   }
 
   final List<Target> targets = androidArchs.map(_getNativeTarget).toList();
-  final native_assets_cli.BuildMode buildModeCli =
+  final BuildModeImpl buildModeCli =
       nativeAssetsBuildMode(buildMode);
 
   globals.logger
       .printTrace('Building native assets for $targets $buildModeCli.');
-  final List<Asset> nativeAssets = <Asset>[];
+  final List<AssetImpl> nativeAssets = <AssetImpl>[];
   final Set<Uri> dependencies = <Uri>{};
   for (final Target target in targets) {
     final BuildResult result = await buildRunner.build(
-      linkModePreference: LinkModePreference.dynamic,
+      linkModePreference: LinkModePreferenceImpl.dynamic,
       target: target,
       buildMode: buildModeCli,
       workingDirectory: projectUri,
       includeParentEnvironment: true,
-      cCompilerConfig: await buildRunner.ndkCCompilerConfig,
+      cCompilerConfig: await buildRunner.ndkCCompilerConfigImpl,
       targetAndroidNdkApi: targetAndroidNdkApi,
     );
     ensureNativeAssetsBuildSucceed(result);
@@ -115,7 +112,7 @@ Future<(Uri? nativeAssetsYaml, List<Uri> dependencies)>
   }
   ensureNoLinkModeStatic(nativeAssets);
   globals.logger.printTrace('Building native assets for $targets done.');
-  final Map<Asset, KernelAsset> assetTargetLocations =
+  final Map<AssetImpl, KernelAsset> assetTargetLocations =
       _assetTargetLocations(nativeAssets);
   await _copyNativeAssetsAndroid(buildUri_, assetTargetLocations, fileSystem);
   final Uri nativeAssetsUri = await writeNativeAssetsYaml(
@@ -127,7 +124,7 @@ Future<(Uri? nativeAssetsYaml, List<Uri> dependencies)>
 
 Future<void> _copyNativeAssetsAndroid(
   Uri buildUri,
-  Map<Asset, KernelAsset> assetTargetLocations,
+  Map<AssetImpl, KernelAsset> assetTargetLocations,
   FileSystem fileSystem,
 ) async {
   if (assetTargetLocations.isNotEmpty) {
@@ -141,9 +138,9 @@ Future<void> _copyNativeAssetsAndroid(
       final Uri archUri = buildUri.resolve('jniLibs/lib/$jniArchDir/');
       await fileSystem.directory(archUri).create(recursive: true);
     }
-    for (final MapEntry<Asset, KernelAsset> assetMapping
+    for (final MapEntry<AssetImpl, KernelAsset> assetMapping
         in assetTargetLocations.entries) {
-      final Uri source = (assetMapping.key.path as AssetAbsolutePath).uri;
+      final Uri source = assetMapping.key.file!;
       final Uri target = (assetMapping.value.path as KernelAssetAbsolutePath).uri;
       final AndroidArch androidArch =
           _getAndroidArch(assetMapping.value.target);
@@ -189,36 +186,37 @@ AndroidArch _getAndroidArch(Target target) {
   }
 }
 
-Map<Asset, KernelAsset> _assetTargetLocations(List<Asset> nativeAssets) {
-  return <Asset, KernelAsset>{
-    for (final Asset asset in nativeAssets)
+Map<AssetImpl, KernelAsset> _assetTargetLocations(
+    List<AssetImpl> nativeAssets) {
+  return <AssetImpl, KernelAsset>{
+    for (final AssetImpl asset in nativeAssets)
       asset: _targetLocationAndroid(asset),
   };
 }
 
 /// Converts the `path` of [asset] as output from a `build.dart` invocation to
 /// the path used inside the Flutter app bundle.
-KernelAsset _targetLocationAndroid(Asset asset) {
-  final AssetPath path = asset.path;
+KernelAsset _targetLocationAndroid(AssetImpl asset) {
+  final LinkModeImpl linkMode = (asset as NativeCodeAssetImpl).linkMode;
   final KernelAssetPath kernelAssetPath;
-  switch (path) {
-    case AssetSystemPath _:
-      kernelAssetPath = KernelAssetSystemPath(path.uri);
-    case AssetInExecutable _:
+  switch (linkMode) {
+    case DynamicLoadingSystemImpl _:
+      kernelAssetPath = KernelAssetSystemPath(linkMode.uri);
+    case LookupInExecutableImpl _:
       kernelAssetPath = KernelAssetInExecutable();
-    case AssetInProcess _:
+    case LookupInProcessImpl _:
       kernelAssetPath = KernelAssetInProcess();
-    case AssetAbsolutePath _:
-      final String fileName = path.uri.pathSegments.last;
+    case DynamicLoadingBundledImpl _:
+      final String fileName = asset.file!.pathSegments.last;
       kernelAssetPath = KernelAssetAbsolutePath(Uri(path: fileName));
     default:
       throw Exception(
-        'Unsupported asset path type ${path.runtimeType} in asset $asset',
+        'Unsupported asset link mode $linkMode in asset $asset',
       );
   }
   return KernelAsset(
     id: asset.id,
-    target: asset.target,
+    target: Target.fromArchitectureAndOS(asset.architecture!, asset.os),
     path: kernelAssetPath,
   );
 }
@@ -231,17 +229,19 @@ KernelAsset _targetLocationAndroid(Asset asset) {
 /// assets feature is disabled, or none of the packages have native assets, a
 /// missing NDK is okay.
 @override
-Future<CCompilerConfig> cCompilerConfigAndroid() async {
+Future<CCompilerConfigImpl> cCompilerConfigAndroid() async {
   final AndroidSdk? androidSdk = AndroidSdk.locateAndroidSdk();
   if (androidSdk == null) {
     throwToolExit('Android SDK could not be found.');
   }
-  final CCompilerConfig result = CCompilerConfig(
-    cc: _toOptionalFileUri(androidSdk.getNdkClangPath()),
-    ar: _toOptionalFileUri(androidSdk.getNdkArPath()),
-    ld: _toOptionalFileUri(androidSdk.getNdkLdPath()),
+  final CCompilerConfigImpl result = CCompilerConfigImpl(
+    compiler: _toOptionalFileUri(androidSdk.getNdkClangPath()),
+    archiver: _toOptionalFileUri(androidSdk.getNdkArPath()),
+    linker: _toOptionalFileUri(androidSdk.getNdkLdPath()),
   );
-  if (result.cc == null || result.ar == null || result.ld == null) {
+  if (result.compiler == null ||
+      result.archiver == null ||
+      result.linker == null) {
     throwToolExit('Android NDK Clang could not be found.');
   }
   return result;

packages/flutter_tools/lib/src/isolated/native_assets/ios/native_assets.dart

@@ -4,10 +4,7 @@
 
 import 'package:native_assets_builder/native_assets_builder.dart'
     hide NativeAssetsBuildRunner;
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    hide BuildMode;
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    as native_assets_cli;
+import 'package:native_assets_cli/native_assets_cli_internal.dart';
 
 import '../../../base/file_system.dart';
 import '../../../build_info.dart';
@@ -30,7 +27,7 @@ Future<Uri?> dryRunNativeAssetsIOS({
     return null;
   }
 
-  final Uri buildUri = nativeAssetsBuildUri(projectUri, OS.iOS);
+  final Uri buildUri = nativeAssetsBuildUri(projectUri, OSImpl.iOS);
   final Iterable<KernelAsset> assetTargetLocations = await dryRunNativeAssetsIOSInternal(
     fileSystem,
     projectUri,
@@ -49,16 +46,16 @@ Future<Iterable<KernelAsset>> dryRunNativeAssetsIOSInternal(
   Uri projectUri,
   NativeAssetsBuildRunner buildRunner,
 ) async {
-  const OS targetOS = OS.iOS;
+  const OSImpl targetOS = OSImpl.iOS;
   globals.logger.printTrace('Dry running native assets for $targetOS.');
   final DryRunResult dryRunResult = await buildRunner.dryRun(
-    linkModePreference: LinkModePreference.dynamic,
+    linkModePreference: LinkModePreferenceImpl.dynamic,
     targetOS: targetOS,
     workingDirectory: projectUri,
     includeParentEnvironment: true,
   );
   ensureNativeAssetsBuildSucceed(dryRunResult);
-  final List<Asset> nativeAssets = dryRunResult.assets;
+  final List<AssetImpl> nativeAssets = dryRunResult.assets;
   ensureNoLinkModeStatic(nativeAssets);
   globals.logger.printTrace('Dry running native assets for $targetOS done.');
   return _assetTargetLocations(nativeAssets).values;
@@ -81,20 +78,20 @@ Future<List<Uri>> buildNativeAssetsIOS({
   }
 
   final List<Target> targets = darwinArchs.map(_getNativeTarget).toList();
-  final native_assets_cli.BuildMode buildModeCli = nativeAssetsBuildMode(buildMode);
+  final BuildModeImpl buildModeCli = nativeAssetsBuildMode(buildMode);
 
-  const OS targetOS = OS.iOS;
+  const OSImpl targetOS = OSImpl.iOS;
   final Uri buildUri = nativeAssetsBuildUri(projectUri, targetOS);
-  final IOSSdk iosSdk = _getIOSSdk(environmentType);
+  final IOSSdkImpl iosSdk = _getIOSSdkImpl(environmentType);
 
   globals.logger.printTrace('Building native assets for $targets $buildModeCli.');
-  final List<Asset> nativeAssets = <Asset>[];
+  final List<AssetImpl> nativeAssets = <AssetImpl>[];
   final Set<Uri> dependencies = <Uri>{};
   for (final Target target in targets) {
     final BuildResult result = await buildRunner.build(
-      linkModePreference: LinkModePreference.dynamic,
+      linkModePreference: LinkModePreferenceImpl.dynamic,
       target: target,
-      targetIOSSdk: iosSdk,
+      targetIOSSdkImpl: iosSdk,
       buildMode: buildModeCli,
       workingDirectory: projectUri,
       includeParentEnvironment: true,
@@ -106,7 +103,8 @@ Future<List<Uri>> buildNativeAssetsIOS({
   }
   ensureNoLinkModeStatic(nativeAssets);
   globals.logger.printTrace('Building native assets for $targets done.');
-  final Map<KernelAssetPath, List<Asset>> fatAssetTargetLocations = _fatAssetTargetLocations(nativeAssets);
+  final Map<KernelAssetPath, List<AssetImpl>> fatAssetTargetLocations =
+      _fatAssetTargetLocations(nativeAssets);
   await _copyNativeAssetsIOS(
     buildUri,
     fatAssetTargetLocations,
@@ -115,7 +113,8 @@ Future<List<Uri>> buildNativeAssetsIOS({
     fileSystem,
   );
 
-  final Map<Asset, KernelAsset> assetTargetLocations = _assetTargetLocations(nativeAssets);
+  final Map<AssetImpl, KernelAsset> assetTargetLocations =
+      _assetTargetLocations(nativeAssets);
   await writeNativeAssetsYaml(
     KernelAssets(assetTargetLocations.values),
     yamlParentDirectory,
@@ -124,12 +123,12 @@ Future<List<Uri>> buildNativeAssetsIOS({
   return dependencies.toList();
 }
 
-IOSSdk _getIOSSdk(EnvironmentType environmentType) {
+IOSSdkImpl _getIOSSdkImpl(EnvironmentType environmentType) {
   switch (environmentType) {
     case EnvironmentType.physical:
-      return IOSSdk.iPhoneOs;
+      return IOSSdkImpl.iPhoneOS;
     case EnvironmentType.simulator:
-      return IOSSdk.iPhoneSimulator;
+      return IOSSdkImpl.iPhoneSimulator;
   }
 }
 
@@ -145,11 +144,13 @@ Target _getNativeTarget(DarwinArch darwinArch) {
   }
 }
 
-Map<KernelAssetPath, List<Asset>> _fatAssetTargetLocations(List<Asset> nativeAssets) {
+Map<KernelAssetPath, List<AssetImpl>> _fatAssetTargetLocations(
+    List<AssetImpl> nativeAssets) {
   final Set<String> alreadyTakenNames = <String>{};
-  final Map<KernelAssetPath, List<Asset>> result = <KernelAssetPath, List<Asset>>{};
+  final Map<KernelAssetPath, List<AssetImpl>> result =
+      <KernelAssetPath, List<AssetImpl>>{};
   final Map<String, KernelAssetPath> idToPath = <String, KernelAssetPath>{};
-  for (final Asset asset in nativeAssets) {
+  for (final AssetImpl asset in nativeAssets) {
     // Use same target path for all assets with the same id.
     final KernelAssetPath path = idToPath[asset.id] ??
         _targetLocationIOS(
@@ -157,44 +158,45 @@ Map<KernelAssetPath, List<Asset>> _fatAssetTargetLocations(List<Asset> nativeAss
           alreadyTakenNames,
         ).path;
     idToPath[asset.id] = path;
-    result[path] ??= <Asset>[];
+    result[path] ??= <AssetImpl>[];
     result[path]!.add(asset);
   }
   return result;
 }
 
-Map<Asset, KernelAsset> _assetTargetLocations(List<Asset> nativeAssets) {
+Map<AssetImpl, KernelAsset> _assetTargetLocations(
+    List<AssetImpl> nativeAssets) {
   final Set<String> alreadyTakenNames = <String>{};
-  return <Asset, KernelAsset>{
-    for (final Asset asset in nativeAssets)
+  return <AssetImpl, KernelAsset>{
+    for (final AssetImpl asset in nativeAssets)
       asset: _targetLocationIOS(asset, alreadyTakenNames),
   };
 }
 
-KernelAsset _targetLocationIOS(Asset asset, Set<String> alreadyTakenNames) {
-  final AssetPath path = asset.path;
+KernelAsset _targetLocationIOS(AssetImpl asset, Set<String> alreadyTakenNames) {
+  final LinkModeImpl linkMode = (asset as NativeCodeAssetImpl).linkMode;
 final KernelAssetPath kernelAssetPath;
-  switch (path) {
-    case AssetSystemPath _:
-      kernelAssetPath = KernelAssetSystemPath(path.uri);
-    case AssetInExecutable _:
+  switch (linkMode) {
+    case DynamicLoadingSystemImpl _:
+      kernelAssetPath = KernelAssetSystemPath(linkMode.uri);
+    case LookupInExecutableImpl _:
       kernelAssetPath = KernelAssetInExecutable();
-    case AssetInProcess _:
+    case LookupInProcessImpl _:
       kernelAssetPath = KernelAssetInProcess();
-    case AssetAbsolutePath _:
-      final String fileName = path.uri.pathSegments.last;
+    case DynamicLoadingBundledImpl _:
+      final String fileName = asset.file!.pathSegments.last;
       kernelAssetPath = KernelAssetAbsolutePath(frameworkUri(
         fileName,
         alreadyTakenNames,
       ));
     default:
       throw Exception(
-        'Unsupported asset path type ${path.runtimeType} in asset $asset',
+        'Unsupported asset link mode $linkMode in asset $asset',
       );
   }
   return KernelAsset(
     id: asset.id,
-    target: asset.target,
+    target: Target.fromArchitectureAndOS(asset.architecture!, asset.os),
     path: kernelAssetPath,
   );
 }
@@ -211,7 +213,7 @@ final KernelAssetPath kernelAssetPath;
 /// in xcode_backend.dart.
 Future<void> _copyNativeAssetsIOS(
   Uri buildUri,
-  Map<KernelAssetPath, List<Asset>> assetTargetLocations,
+  Map<KernelAssetPath, List<AssetImpl>> assetTargetLocations,
   String? codesignIdentity,
   BuildMode buildMode,
   FileSystem fileSystem,
@@ -219,12 +221,11 @@ Future<void> _copyNativeAssetsIOS(
   if (assetTargetLocations.isNotEmpty) {
     globals.logger
         .printTrace('Copying native assets to ${buildUri.toFilePath()}.');
-    for (final MapEntry<KernelAssetPath, List<Asset>> assetMapping
+    for (final MapEntry<KernelAssetPath, List<AssetImpl>> assetMapping
         in assetTargetLocations.entries) {
       final Uri target = (assetMapping.key as KernelAssetAbsolutePath).uri;
       final List<Uri> sources = <Uri>[
-        for (final Asset source in assetMapping.value)
-          (source.path as AssetAbsolutePath).uri
+        for (final AssetImpl source in assetMapping.value) source.file!
       ];
       final Uri targetUri = buildUri.resolveUri(target);
       final File dylibFile = fileSystem.file(targetUri);

packages/flutter_tools/lib/src/isolated/native_assets/linux/native_assets.dart

@@ -4,8 +4,7 @@
 
 import 'package:native_assets_builder/native_assets_builder.dart'
     hide NativeAssetsBuildRunner;
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    hide BuildMode;
+import 'package:native_assets_cli/native_assets_cli_internal.dart';
 
 import '../../../base/common.dart';
 import '../../../base/file_system.dart';
@@ -29,7 +28,7 @@ Future<Uri?> dryRunNativeAssetsLinux({
     projectUri: projectUri,
     flutterTester: flutterTester,
     fileSystem: fileSystem,
-    os: OS.linux,
+    os: OSImpl.linux,
   );
 }
 
@@ -44,7 +43,7 @@ Future<Iterable<KernelAsset>> dryRunNativeAssetsLinuxInternal(
     projectUri,
     flutterTester,
     buildRunner,
-    OS.linux,
+    OSImpl.linux,
   );
 }
 
@@ -71,7 +70,7 @@ Future<(Uri? nativeAssetsYaml, List<Uri> dependencies)> buildNativeAssetsLinux({
 /// Flutter expects `clang++` to be on the path on Linux hosts.
 ///
 /// Search for the accompanying `clang`, `ar`, and `ld`.
-Future<CCompilerConfig> cCompilerConfigLinux() async {
+Future<CCompilerConfigImpl> cCompilerConfigLinux() async {
   const String kClangPlusPlusBinary = 'clang++';
   const String kClangBinary = 'clang';
   const String kArBinary = 'llvm-ar';
@@ -93,9 +92,9 @@ Future<CCompilerConfig> cCompilerConfigLinux() async {
     }
     binaryPaths[binary] = binaryFile.uri;
   }
-  return CCompilerConfig(
-    ar: binaryPaths[kArBinary],
-    cc: binaryPaths[kClangBinary],
-    ld: binaryPaths[kLdBinary],
+  return CCompilerConfigImpl(
+    archiver: binaryPaths[kArBinary],
+    compiler: binaryPaths[kClangBinary],
+    linker: binaryPaths[kLdBinary],
   );
 }

packages/flutter_tools/lib/src/isolated/native_assets/macos/native_assets.dart

@@ -4,10 +4,7 @@
 
 import 'package:native_assets_builder/native_assets_builder.dart'
     hide NativeAssetsBuildRunner;
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    hide BuildMode;
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    as native_assets_cli;
+import 'package:native_assets_cli/native_assets_cli_internal.dart';
 
 import '../../../base/file_system.dart';
 import '../../../build_info.dart';
@@ -30,7 +27,7 @@ Future<Uri?> dryRunNativeAssetsMacOS({
     return null;
   }
 
-  final Uri buildUri = nativeAssetsBuildUri(projectUri, OS.macOS);
+  final Uri buildUri = nativeAssetsBuildUri(projectUri, OSImpl.macOS);
   final Iterable<KernelAsset> nativeAssetPaths = await dryRunNativeAssetsMacOSInternal(
     fileSystem,
     projectUri,
@@ -51,22 +48,23 @@ Future<Iterable<KernelAsset>> dryRunNativeAssetsMacOSInternal(
   bool flutterTester,
   NativeAssetsBuildRunner buildRunner,
 ) async {
-  const OS targetOS = OS.macOS;
+  const OSImpl targetOS = OSImpl.macOS;
   final Uri buildUri = nativeAssetsBuildUri(projectUri, targetOS);
 
   globals.logger.printTrace('Dry running native assets for $targetOS.');
   final DryRunResult dryRunResult = await buildRunner.dryRun(
-    linkModePreference: LinkModePreference.dynamic,
+    linkModePreference: LinkModePreferenceImpl.dynamic,
     targetOS: targetOS,
     workingDirectory: projectUri,
     includeParentEnvironment: true,
   );
   ensureNativeAssetsBuildSucceed(dryRunResult);
-  final List<Asset> nativeAssets = dryRunResult.assets;
+  final List<AssetImpl> nativeAssets = dryRunResult.assets;
   ensureNoLinkModeStatic(nativeAssets);
   globals.logger.printTrace('Dry running native assets for $targetOS done.');
   final Uri? absolutePath = flutterTester ? buildUri : null;
-  final Map<Asset, KernelAsset> assetTargetLocations = _assetTargetLocations(
+  final Map<AssetImpl, KernelAsset> assetTargetLocations =
+      _assetTargetLocations(
     nativeAssets,
     absolutePath,
   );
@@ -90,7 +88,7 @@ Future<(Uri? nativeAssetsYaml, List<Uri> dependencies)> buildNativeAssetsMacOS({
   Uri? yamlParentDirectory,
   required FileSystem fileSystem,
 }) async {
-  const OS targetOS = OS.macOS;
+  const OSImpl targetOS = OSImpl.macOS;
   final Uri buildUri = nativeAssetsBuildUri(projectUri, targetOS);
   if (!await nativeBuildRequired(buildRunner)) {
     final Uri nativeAssetsYaml = await writeNativeAssetsYaml(
@@ -104,16 +102,16 @@ Future<(Uri? nativeAssetsYaml, List<Uri> dependencies)> buildNativeAssetsMacOS({
   final List<Target> targets = darwinArchs != null
       ? darwinArchs.map(_getNativeTarget).toList()
       : <Target>[Target.current];
-  final native_assets_cli.BuildMode buildModeCli =
+  final BuildModeImpl buildModeCli =
       nativeAssetsBuildMode(buildMode);
 
   globals.logger
       .printTrace('Building native assets for $targets $buildModeCli.');
-  final List<Asset> nativeAssets = <Asset>[];
+  final List<AssetImpl> nativeAssets = <AssetImpl>[];
   final Set<Uri> dependencies = <Uri>{};
   for (final Target target in targets) {
     final BuildResult result = await buildRunner.build(
-      linkModePreference: LinkModePreference.dynamic,
+      linkModePreference: LinkModePreferenceImpl.dynamic,
       target: target,
       buildMode: buildModeCli,
       workingDirectory: projectUri,
@@ -127,9 +125,9 @@ Future<(Uri? nativeAssetsYaml, List<Uri> dependencies)> buildNativeAssetsMacOS({
   ensureNoLinkModeStatic(nativeAssets);
   globals.logger.printTrace('Building native assets for $targets done.');
   final Uri? absolutePath = flutterTester ? buildUri : null;
-  final Map<Asset, KernelAsset> assetTargetLocations =
+  final Map<AssetImpl, KernelAsset> assetTargetLocations =
       _assetTargetLocations(nativeAssets, absolutePath);
-  final Map<KernelAssetPath, List<Asset>> fatAssetTargetLocations =
+  final Map<KernelAssetPath, List<AssetImpl>> fatAssetTargetLocations =
       _fatAssetTargetLocations(nativeAssets, absolutePath);
   if (flutterTester) {
     await _copyNativeAssetsMacOSFlutterTester(
@@ -168,15 +166,15 @@ Target _getNativeTarget(DarwinArch darwinArch) {
   }
 }
 
-Map<KernelAssetPath, List<Asset>> _fatAssetTargetLocations(
-  List<Asset> nativeAssets,
+Map<KernelAssetPath, List<AssetImpl>> _fatAssetTargetLocations(
+  List<AssetImpl> nativeAssets,
   Uri? absolutePath,
 ) {
   final Set<String> alreadyTakenNames = <String>{};
-  final Map<KernelAssetPath, List<Asset>> result =
-      <KernelAssetPath, List<Asset>>{};
+  final Map<KernelAssetPath, List<AssetImpl>> result =
+      <KernelAssetPath, List<AssetImpl>>{};
   final Map<String, KernelAssetPath> idToPath = <String, KernelAssetPath>{};
-  for (final Asset asset in nativeAssets) {
+  for (final AssetImpl asset in nativeAssets) {
     // Use same target path for all assets with the same id.
     final KernelAssetPath path = idToPath[asset.id] ??
         _targetLocationMacOS(
@@ -185,39 +183,39 @@ Map<KernelAssetPath, List<Asset>> _fatAssetTargetLocations(
           alreadyTakenNames,
         ).path;
     idToPath[asset.id] = path;
-    result[path] ??= <Asset>[];
+    result[path] ??= <AssetImpl>[];
     result[path]!.add(asset);
   }
   return result;
 }
 
-Map<Asset, KernelAsset> _assetTargetLocations(
-  List<Asset> nativeAssets,
+Map<AssetImpl, KernelAsset> _assetTargetLocations(
+  List<AssetImpl> nativeAssets,
   Uri? absolutePath,
 ) {
   final Set<String> alreadyTakenNames = <String>{};
-  return <Asset, KernelAsset>{
-    for (final Asset asset in nativeAssets)
+  return <AssetImpl, KernelAsset>{
+    for (final AssetImpl asset in nativeAssets)
       asset: _targetLocationMacOS(asset, absolutePath, alreadyTakenNames),
   };
 }
 
 KernelAsset _targetLocationMacOS(
-  Asset asset,
+  AssetImpl asset,
   Uri? absolutePath,
   Set<String> alreadyTakenNames,
 ) {
-  final AssetPath path = asset.path;
+  final LinkModeImpl linkMode = (asset as NativeCodeAssetImpl).linkMode;
   final KernelAssetPath kernelAssetPath;
-  switch (path) {
-    case AssetSystemPath _:
-      kernelAssetPath = KernelAssetSystemPath(path.uri);
-    case AssetInExecutable _:
+  switch (linkMode) {
+    case DynamicLoadingSystemImpl _:
+      kernelAssetPath = KernelAssetSystemPath(linkMode.uri);
+    case LookupInExecutableImpl _:
       kernelAssetPath = KernelAssetInExecutable();
-    case AssetInProcess _:
+    case LookupInProcessImpl _:
       kernelAssetPath = KernelAssetInProcess();
-    case AssetAbsolutePath _:
-      final String fileName = path.uri.pathSegments.last;
+    case DynamicLoadingBundledImpl _:
+      final String fileName = asset.file!.pathSegments.last;
       Uri uri;
       if (absolutePath != null) {
         // Flutter tester needs full host paths.
@@ -231,12 +229,12 @@ KernelAsset _targetLocationMacOS(
       kernelAssetPath = KernelAssetAbsolutePath(uri);
     default:
       throw Exception(
-        'Unsupported asset path type ${path.runtimeType} in asset $asset',
+        'Unsupported asset link mode $linkMode in asset $asset',
       );
   }
   return KernelAsset(
     id: asset.id,
-    target: asset.target,
+    target: Target.fromArchitectureAndOS(asset.architecture!, asset.os),
     path: kernelAssetPath,
   );
 }
@@ -256,7 +254,7 @@ KernelAsset _targetLocationMacOS(
 /// in macos_assemble.sh.
 Future<void> _copyNativeAssetsMacOS(
   Uri buildUri,
-  Map<KernelAssetPath, List<Asset>> assetTargetLocations,
+  Map<KernelAssetPath, List<AssetImpl>> assetTargetLocations,
   String? codesignIdentity,
   BuildMode buildMode,
   FileSystem fileSystem,
@@ -265,12 +263,11 @@ Future<void> _copyNativeAssetsMacOS(
     globals.logger.printTrace(
       'Copying native assets to ${buildUri.toFilePath()}.',
     );
-    for (final MapEntry<KernelAssetPath, List<Asset>> assetMapping
+    for (final MapEntry<KernelAssetPath, List<AssetImpl>> assetMapping
         in assetTargetLocations.entries) {
       final Uri target = (assetMapping.key as KernelAssetAbsolutePath).uri;
       final List<Uri> sources = <Uri>[
-        for (final Asset source in assetMapping.value)
-          (source.path as AssetAbsolutePath).uri,
+        for (final AssetImpl source in assetMapping.value) source.file!,
       ];
       final Uri targetUri = buildUri.resolveUri(target);
       final String name = targetUri.pathSegments.last;
@@ -326,7 +323,7 @@ Future<void> _copyNativeAssetsMacOS(
 /// Code signing is also done here.
 Future<void> _copyNativeAssetsMacOSFlutterTester(
   Uri buildUri,
-  Map<KernelAssetPath, List<Asset>> assetTargetLocations,
+  Map<KernelAssetPath, List<AssetImpl>> assetTargetLocations,
   String? codesignIdentity,
   BuildMode buildMode,
   FileSystem fileSystem,
@@ -335,12 +332,11 @@ Future<void> _copyNativeAssetsMacOSFlutterTester(
     globals.logger.printTrace(
       'Copying native assets to ${buildUri.toFilePath()}.',
     );
-    for (final MapEntry<KernelAssetPath, List<Asset>> assetMapping
+    for (final MapEntry<KernelAssetPath, List<AssetImpl>> assetMapping
         in assetTargetLocations.entries) {
       final Uri target = (assetMapping.key as KernelAssetAbsolutePath).uri;
       final List<Uri> sources = <Uri>[
-        for (final Asset source in assetMapping.value)
-          (source.path as AssetAbsolutePath).uri,
+        for (final AssetImpl source in assetMapping.value) source.file!,
       ];
       final Uri targetUri = buildUri.resolveUri(target);
       final File dylibFile = fileSystem.file(targetUri);

packages/flutter_tools/lib/src/isolated/native_assets/macos/native_assets_host.dart

@@ -4,8 +4,7 @@
 
 // Shared logic between iOS and macOS implementations of native assets.
 
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    hide BuildMode;
+import 'package:native_assets_cli/native_assets_cli_internal.dart';
 
 import '../../../base/common.dart';
 import '../../../base/file_system.dart';
@@ -131,7 +130,7 @@ Future<void> codesignDylib(
 /// Flutter expects `xcrun` to be on the path on macOS hosts.
 ///
 /// Use the `clang`, `ar`, and `ld` that would be used if run with `xcrun`.
-Future<CCompilerConfig> cCompilerConfigMacOS() async {
+Future<CCompilerConfigImpl> cCompilerConfigMacOS() async {
   final ProcessResult xcrunResult = await globals.processManager.run(
     <String>['xcrun', 'clang', '--version'],
   );
@@ -142,10 +141,10 @@ Future<CCompilerConfig> cCompilerConfigMacOS() async {
       .firstWhere((String s) => s.startsWith('InstalledDir: '))
       .split(' ')
       .last;
-  return CCompilerConfig(
-    cc: Uri.file('$installPath/clang'),
-    ar: Uri.file('$installPath/ar'),
-    ld: Uri.file('$installPath/ld'),
+  return CCompilerConfigImpl(
+    compiler: Uri.file('$installPath/clang'),
+    archiver: Uri.file('$installPath/ar'),
+    linker: Uri.file('$installPath/ld'),
   );
 }
 

packages/flutter_tools/lib/src/isolated/native_assets/windows/native_assets.dart

@@ -4,8 +4,7 @@
 
 import 'package:native_assets_builder/native_assets_builder.dart'
     hide NativeAssetsBuildRunner;
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    hide BuildMode;
+import 'package:native_assets_cli/native_assets_cli_internal.dart';
 
 import '../../../base/file_system.dart';
 import '../../../build_info.dart';
@@ -28,7 +27,7 @@ Future<Uri?> dryRunNativeAssetsWindows({
     projectUri: projectUri,
     flutterTester: flutterTester,
     fileSystem: fileSystem,
-    os: OS.windows,
+    os: OSImpl.windows,
   );
 }
 
@@ -43,7 +42,7 @@ Future<Iterable<KernelAsset>> dryRunNativeAssetsWindowsInternal(
     projectUri,
     flutterTester,
     buildRunner,
-    OS.windows,
+    OSImpl.windows,
   );
 }
 
@@ -68,7 +67,7 @@ Future<(Uri? nativeAssetsYaml, List<Uri> dependencies)>
   );
 }
 
-Future<CCompilerConfig> cCompilerConfigWindows() async {
+Future<CCompilerConfigImpl> cCompilerConfigWindows() async {
   final VisualStudio visualStudio = VisualStudio(
     fileSystem: globals.fs,
     platform: globals.platform,
@@ -77,10 +76,10 @@ Future<CCompilerConfig> cCompilerConfigWindows() async {
     osUtils: globals.os,
   );
 
-  return CCompilerConfig(
-    cc: _toOptionalFileUri(visualStudio.clPath),
-    ld: _toOptionalFileUri(visualStudio.linkPath),
-    ar: _toOptionalFileUri(visualStudio.libPath),
+  return CCompilerConfigImpl(
+    compiler: _toOptionalFileUri(visualStudio.clPath),
+    linker: _toOptionalFileUri(visualStudio.linkPath),
+    archiver: _toOptionalFileUri(visualStudio.libPath),
     envScript: _toOptionalFileUri(visualStudio.vcvarsPath),
     envScriptArgs: <String>[],
   );

packages/flutter_tools/pubspec.yaml

@@ -54,10 +54,10 @@ dependencies:
   async: 2.11.0
   unified_analytics: 5.8.8
 
-  cli_config: 0.1.2
+  cli_config: 0.2.0
   graphs: 2.3.1
-  native_assets_builder: 0.5.0
-  native_assets_cli: 0.4.2
+  native_assets_builder: 0.6.1
+  native_assets_cli: 0.5.3
 
   # We depend on very specific internal implementation details of the
   # 'test' package, which change between versions, so when upgrading
@@ -120,4 +120,4 @@ dartdoc:
   # Exclude this package from the hosted API docs.
   nodoc: true
 
-# PUBSPEC CHECKSUM: df1d
+# PUBSPEC CHECKSUM: ba20

packages/flutter_tools/templates/package_ffi/build.dart.tmpl → packages/flutter_tools/templates/package_ffi/hook/build.dart.tmpl

@@ -5,20 +5,22 @@ import 'package:native_assets_cli/native_assets_cli.dart';
 const packageName = '{{projectName}}';
 
 void main(List<String> args) async {
-  final buildConfig = await BuildConfig.fromArgs(args);
-  final buildOutput = BuildOutput();
-  final cbuilder = CBuilder.library(
-    name: packageName,
-    assetId:
-        'package:$packageName/${packageName}_bindings_generated.dart',
-    sources: [
-      'src/$packageName.c',
-    ],
-  );
-  await cbuilder.run(
-    buildConfig: buildConfig,
-    buildOutput: buildOutput,
-    logger: Logger('')..onRecord.listen((record) => print(record.message)),
-  );
-  await buildOutput.writeToFile(outDir: buildConfig.outDir);
+  await build(args, (config, output) async {
+    final packageName = config.packageName;
+    final cbuilder = CBuilder.library(
+      name: packageName,
+      assetName: '${packageName}_bindings_generated.dart',
+      sources: [
+        'src/$packageName.c',
+      ],
+      dartBuildFiles: ['hook/build.dart'],
+    );
+    await cbuilder.run(
+      buildConfig: config,
+      buildOutput: output,
+      logger: Logger('')
+        ..level = Level.ALL
+        ..onRecord.listen((record) => print(record.message)),
+    );
+  });
 }

packages/flutter_tools/templates/package_ffi/pubspec.yaml.tmpl

@@ -7,10 +7,10 @@ environment:
   sdk: {{dartSdkVersionBounds}}
 
 dependencies:
-  cli_config: ^0.1.2
+  cli_config: ^0.2.0
   logging: ^1.2.0
-  native_assets_cli: ^0.4.2
-  native_toolchain_c: ^0.3.4+1
+  native_assets_cli: ^0.5.3
+  native_toolchain_c: ^0.4.1
 
 dev_dependencies:
   ffi: ^2.1.0

packages/flutter_tools/templates/template_manifest.json

@@ -252,9 +252,9 @@
         "templates/package_ffi/.gitignore.tmpl",
         "templates/package_ffi/.metadata.tmpl",
         "templates/package_ffi/analysis_options.yaml.tmpl",
-        "templates/package_ffi/build.dart.tmpl",
         "templates/package_ffi/CHANGELOG.md.tmpl",
         "templates/package_ffi/ffigen.yaml.tmpl",
+        "templates/package_ffi/hook/build.dart.tmpl",
         "templates/package_ffi/lib/projectName_bindings_generated.dart.tmpl",
         "templates/package_ffi/lib/projectName.dart.tmpl",
         "templates/package_ffi/LICENSE.tmpl",

packages/flutter_tools/test/general.shard/isolated/android/native_assets_test.dart

@@ -15,10 +15,7 @@ import 'package:flutter_tools/src/build_system/build_system.dart';
 import 'package:flutter_tools/src/features.dart';
 import 'package:flutter_tools/src/globals.dart' as globals;
 import 'package:flutter_tools/src/isolated/native_assets/android/native_assets.dart';
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    as native_assets_cli;
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    hide BuildMode, Target;
+import 'package:native_assets_cli/native_assets_cli_internal.dart';
 import 'package:package_config/package_config_types.dart';
 
 import '../../../src/common.dart';
@@ -128,18 +125,20 @@ void main() {
           Package('bar', projectUri),
         ],
         dryRunResult: FakeNativeAssetsBuilderResult(
-          assets: <Asset>[
-            Asset(
+          assets: <AssetImpl>[
+            NativeCodeAssetImpl(
               id: 'package:bar/bar.dart',
-              linkMode: LinkMode.dynamic,
-              target: native_assets_cli.Target.macOSArm64,
-              path: AssetAbsolutePath(Uri.file('libbar.so')),
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.macOS,
+              architecture: ArchitectureImpl.arm64,
+              file: Uri.file('libbar.so'),
             ),
-            Asset(
+            NativeCodeAssetImpl(
               id: 'package:bar/bar.dart',
-              linkMode: LinkMode.dynamic,
-              target: native_assets_cli.Target.macOSX64,
-              path: AssetAbsolutePath(Uri.file('libbar.so')),
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.macOS,
+              architecture: ArchitectureImpl.x64,
+              file: Uri.file('libbar.so'),
             ),
           ],
         ),
@@ -237,12 +236,13 @@ void main() {
           Package('bar', projectUri),
         ],
         buildResult: FakeNativeAssetsBuilderResult(
-          assets: <Asset>[
-            Asset(
+          assets: <AssetImpl>[
+            NativeCodeAssetImpl(
               id: 'package:bar/bar.dart',
-              linkMode: LinkMode.dynamic,
-              target: native_assets_cli.Target.androidArm64,
-              path: AssetAbsolutePath(Uri.file('libbar.so')),
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.android,
+              architecture: ArchitectureImpl.arm64,
+              file: Uri.file('libbar.so'),
             ),
           ],
         ),
@@ -382,6 +382,6 @@ class _BuildRunnerWithoutNdk extends FakeNativeAssetsBuildRunner {
   });
 
   @override
-  Future<CCompilerConfig> get ndkCCompilerConfig async =>
+  Future<CCompilerConfigImpl> get ndkCCompilerConfigImpl async =>
       throwToolExit('Android NDK Clang could not be found.');
 }

packages/flutter_tools/test/general.shard/isolated/build_system/targets/native_assets_test.dart

@@ -130,18 +130,20 @@ void main() {
 
       final NativeAssetsBuildRunner buildRunner = FakeNativeAssetsBuildRunner(
         packagesWithNativeAssetsResult: <Package>[Package('foo', iosEnvironment.buildDir.uri)],
-        buildResult: FakeNativeAssetsBuilderResult(assets: <native_assets_cli.Asset>[
-          native_assets_cli.Asset(
-            id: 'package:foo/foo.dart',
-            linkMode: native_assets_cli.LinkMode.dynamic,
-            target: native_assets_cli.Target.iOSArm64,
-            path: native_assets_cli.AssetAbsolutePath(
-              Uri.file('foo.framework/foo'),
+        buildResult: FakeNativeAssetsBuilderResult(
+          assets: <native_assets_cli.AssetImpl>[
+            native_assets_cli.NativeCodeAssetImpl(
+              id: 'package:foo/foo.dart',
+              linkMode: native_assets_cli.DynamicLoadingBundledImpl(),
+              os: native_assets_cli.OSImpl.iOS,
+              architecture: native_assets_cli.ArchitectureImpl.arm64,
+              file: Uri.file('foo.framework/foo'),
             ),
-          )
-        ], dependencies: <Uri>[
-          Uri.file('src/foo.c'),
-        ]),
+          ],
+          dependencies: <Uri>[
+            Uri.file('src/foo.c'),
+          ],
+        ),
       );
       await NativeAssets(buildRunner: buildRunner).build(iosEnvironment);
 
@@ -191,23 +193,27 @@ void main() {
           packagesWithNativeAssetsResult: <Package>[
             Package('foo', androidEnvironment.buildDir.uri)
           ],
-          buildResult:
-              FakeNativeAssetsBuilderResult(assets: <native_assets_cli.Asset>[
-            if (hasAssets)
-              native_assets_cli.Asset(
-                id: 'package:foo/foo.dart',
-                linkMode: native_assets_cli.LinkMode.dynamic,
-                target: native_assets_cli.Target.androidArm64,
-                path: native_assets_cli.AssetAbsolutePath(
-                  Uri.file('libfoo.so'),
+          buildResult: FakeNativeAssetsBuilderResult(
+            assets: <native_assets_cli.AssetImpl>[
+              if (hasAssets)
+                native_assets_cli.NativeCodeAssetImpl(
+                  id: 'package:foo/foo.dart',
+                  linkMode: native_assets_cli.DynamicLoadingBundledImpl(),
+                  os: native_assets_cli.OSImpl.android,
+                  architecture: native_assets_cli.ArchitectureImpl.arm64,
+                  file: Uri.file('libfoo.so'),
                 ),
-              )
-          ], dependencies: <Uri>[
-            Uri.file('src/foo.c'),
-          ]),
+            ],
+            dependencies: <Uri>[
+              Uri.file('src/foo.c'),
+            ],
+          ),
         );
         await NativeAssets(buildRunner: buildRunner).build(androidEnvironment);
-        expect(buildRunner.lastBuildMode, native_assets_cli.BuildMode.release);
+        expect(
+          buildRunner.lastBuildMode,
+          native_assets_cli.BuildModeImpl.release,
+        );
       },
     );
   }

packages/flutter_tools/test/general.shard/isolated/fake_native_assets_build_runner.dart

@@ -21,35 +21,36 @@ class FakeNativeAssetsBuildRunner implements NativeAssetsBuildRunner {
     this.onBuild,
     this.dryRunResult = const FakeNativeAssetsBuilderResult(),
     this.buildResult = const FakeNativeAssetsBuilderResult(),
-    CCompilerConfig? cCompilerConfigResult,
-    CCompilerConfig? ndkCCompilerConfigResult,
-  })  : cCompilerConfigResult = cCompilerConfigResult ?? CCompilerConfig(),
-        ndkCCompilerConfigResult = ndkCCompilerConfigResult ?? CCompilerConfig();
+    CCompilerConfigImpl? cCompilerConfigResult,
+    CCompilerConfigImpl? ndkCCompilerConfigImplResult,
+  })  : cCompilerConfigResult = cCompilerConfigResult ?? CCompilerConfigImpl(),
+        ndkCCompilerConfigImplResult =
+            ndkCCompilerConfigImplResult ?? CCompilerConfigImpl();
 
   final native_assets_builder.BuildResult Function(Target)? onBuild;
   final native_assets_builder.BuildResult buildResult;
   final native_assets_builder.DryRunResult dryRunResult;
   final bool hasPackageConfigResult;
   final List<Package> packagesWithNativeAssetsResult;
-  final CCompilerConfig cCompilerConfigResult;
-  final CCompilerConfig ndkCCompilerConfigResult;
+  final CCompilerConfigImpl cCompilerConfigResult;
+  final CCompilerConfigImpl ndkCCompilerConfigImplResult;
 
   int buildInvocations = 0;
   int dryRunInvocations = 0;
   int hasPackageConfigInvocations = 0;
   int packagesWithNativeAssetsInvocations = 0;
-  BuildMode? lastBuildMode;
+  BuildModeImpl? lastBuildMode;
 
   @override
   Future<native_assets_builder.BuildResult> build({
     required bool includeParentEnvironment,
-    required BuildMode buildMode,
-    required LinkModePreference linkModePreference,
+    required BuildModeImpl buildMode,
+    required LinkModePreferenceImpl linkModePreference,
     required Target target,
     required Uri workingDirectory,
-    CCompilerConfig? cCompilerConfig,
+    CCompilerConfigImpl? cCompilerConfig,
     int? targetAndroidNdkApi,
-    IOSSdk? targetIOSSdk,
+    IOSSdkImpl? targetIOSSdkImpl,
   }) async {
     buildInvocations++;
     lastBuildMode = buildMode;
@@ -59,8 +60,8 @@ class FakeNativeAssetsBuildRunner implements NativeAssetsBuildRunner {
   @override
   Future<native_assets_builder.DryRunResult> dryRun({
     required bool includeParentEnvironment,
-    required LinkModePreference linkModePreference,
-    required OS targetOS,
+    required LinkModePreferenceImpl linkModePreference,
+    required OSImpl targetOS,
     required Uri workingDirectory,
   }) async {
     dryRunInvocations++;
@@ -80,22 +81,24 @@ class FakeNativeAssetsBuildRunner implements NativeAssetsBuildRunner {
   }
 
   @override
-  Future<CCompilerConfig> get cCompilerConfig async => cCompilerConfigResult;
+  Future<CCompilerConfigImpl> get cCompilerConfig async =>
+      cCompilerConfigResult;
 
   @override
-  Future<CCompilerConfig> get ndkCCompilerConfig async => cCompilerConfigResult;
+  Future<CCompilerConfigImpl> get ndkCCompilerConfigImpl async =>
+      cCompilerConfigResult;
 }
 
 final class FakeNativeAssetsBuilderResult
     implements native_assets_builder.BuildResult {
   const FakeNativeAssetsBuilderResult({
-    this.assets = const <Asset>[],
+    this.assets = const <AssetImpl>[],
     this.dependencies = const <Uri>[],
     this.success = true,
   });
 
   @override
-  final List<Asset> assets;
+  final List<AssetImpl> assets;
 
   @override
   final List<Uri> dependencies;

packages/flutter_tools/test/general.shard/isolated/hot_test.dart

@@ -14,9 +14,7 @@ import 'package:flutter_tools/src/resident_devtools_handler.dart';
 import 'package:flutter_tools/src/resident_runner.dart';
 import 'package:flutter_tools/src/run_hot.dart';
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    hide BuildMode, Target;
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    as native_assets_cli;
+    hide Target;
 import 'package:package_config/package_config.dart';
 import 'package:unified_analytics/unified_analytics.dart';
 
@@ -65,12 +63,20 @@ void main() {
           Package('bar', fileSystem.currentDirectory.uri),
         ],
         dryRunResult: FakeNativeAssetsBuilderResult(
-          assets: <Asset>[
-            Asset(
+          assets: <AssetImpl>[
+            NativeCodeAssetImpl(
+              id: 'package:bar/bar.dart',
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.macOS,
+              architecture: ArchitectureImpl.arm64,
+              file: Uri.file('bar.dylib'),
+            ),
+            NativeCodeAssetImpl(
               id: 'package:bar/bar.dart',
-              linkMode: LinkMode.dynamic,
-              target: native_assets_cli.Target.macOSArm64,
-              path: AssetAbsolutePath(Uri.file('bar.dylib')),
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.macOS,
+              architecture: ArchitectureImpl.x64,
+              file: Uri.file('bar.dylib'),
             ),
           ],
         ),
@@ -124,12 +130,20 @@ void main() {
           Package('bar', fileSystem.currentDirectory.uri),
         ],
         dryRunResult: FakeNativeAssetsBuilderResult(
-          assets: <Asset>[
-            Asset(
+          assets: <AssetImpl>[
+            NativeCodeAssetImpl(
+              id: 'package:bar/bar.dart',
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.macOS,
+              architecture: ArchitectureImpl.arm64,
+              file: Uri.file('bar.dylib'),
+            ),
+            NativeCodeAssetImpl(
               id: 'package:bar/bar.dart',
-              linkMode: LinkMode.dynamic,
-              target: native_assets_cli.Target.macOSArm64,
-              path: AssetAbsolutePath(Uri.file('bar.dylib')),
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.macOS,
+              architecture: ArchitectureImpl.x64,
+              file: Uri.file('bar.dylib'),
             ),
           ],
         ),

packages/flutter_tools/test/general.shard/isolated/ios/native_assets_test.dart

@@ -15,7 +15,7 @@ import 'package:flutter_tools/src/features.dart';
 import 'package:flutter_tools/src/globals.dart' as globals;
 import 'package:flutter_tools/src/isolated/native_assets/ios/native_assets.dart';
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    hide BuildMode, Target;
+    hide Target;
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     as native_assets_cli;
 import 'package:package_config/package_config_types.dart';
@@ -127,18 +127,20 @@ void main() {
           Package('bar', projectUri),
         ],
         dryRunResult: FakeNativeAssetsBuilderResult(
-          assets: <Asset>[
-            Asset(
+          assets: <AssetImpl>[
+            NativeCodeAssetImpl(
               id: 'package:bar/bar.dart',
-              linkMode: LinkMode.dynamic,
-              target: native_assets_cli.Target.macOSArm64,
-              path: AssetAbsolutePath(Uri.file('libbar.dylib')),
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.macOS,
+              architecture: ArchitectureImpl.arm64,
+              file: Uri.file('libbar.dylib'),
             ),
-            Asset(
+            NativeCodeAssetImpl(
               id: 'package:bar/bar.dart',
-              linkMode: LinkMode.dynamic,
-              target: native_assets_cli.Target.macOSX64,
-              path: AssetAbsolutePath(Uri.file('libbar.dylib')),
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.macOS,
+              architecture: ArchitectureImpl.x64,
+              file: Uri.file('libbar.dylib'),
             ),
           ],
         ),
@@ -265,12 +267,13 @@ void main() {
           Package('bar', projectUri),
         ],
         onBuild: (native_assets_cli.Target target) => FakeNativeAssetsBuilderResult(
-          assets: <Asset>[
-            Asset(
+          assets: <AssetImpl>[
+            NativeCodeAssetImpl(
               id: 'package:bar/bar.dart',
-              linkMode: LinkMode.dynamic,
-              target: target,
-              path: AssetAbsolutePath(Uri.file('${target.architecture}/libbar.dylib')),
+              linkMode: DynamicLoadingBundledImpl(),
+              os: target.os,
+              architecture: target.architecture,
+              file: Uri.file('${target.architecture}/libbar.dylib'),
             ),
           ],
         ),

packages/flutter_tools/test/general.shard/isolated/linux/native_assets_test.dart

@@ -18,9 +18,7 @@ import 'package:flutter_tools/src/globals.dart' as globals;
 import 'package:flutter_tools/src/isolated/native_assets/linux/native_assets.dart';
 import 'package:flutter_tools/src/isolated/native_assets/native_assets.dart';
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    hide BuildMode, Target;
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    as native_assets_cli;
+    hide Target;
 import 'package:package_config/package_config_types.dart';
 
 import '../../../src/common.dart';
@@ -165,18 +163,20 @@ void main() {
           Package('bar', projectUri),
         ],
         dryRunResult: FakeNativeAssetsBuilderResult(
-          assets: <Asset>[
-            Asset(
+          assets: <AssetImpl>[
+            NativeCodeAssetImpl(
               id: 'package:bar/bar.dart',
-              linkMode: LinkMode.dynamic,
-              target: native_assets_cli.Target.linuxX64,
-              path: AssetAbsolutePath(Uri.file('libbar.so')),
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.linux,
+              architecture: ArchitectureImpl.x64,
+              file: Uri.file('libbar.so'),
             ),
-            Asset(
+            NativeCodeAssetImpl(
               id: 'package:bar/bar.dart',
-              linkMode: LinkMode.dynamic,
-              target: native_assets_cli.Target.linuxArm64,
-              path: AssetAbsolutePath(Uri.file('libbar.so')),
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.linux,
+              architecture: ArchitectureImpl.arm64,
+              file: Uri.file('libbar.so'),
             ),
           ],
         ),
@@ -284,12 +284,13 @@ void main() {
             Package('bar', projectUri),
           ],
           buildResult: FakeNativeAssetsBuilderResult(
-            assets: <Asset>[
-              Asset(
+            assets: <AssetImpl>[
+              NativeCodeAssetImpl(
                 id: 'package:bar/bar.dart',
-                linkMode: LinkMode.dynamic,
-                target: native_assets_cli.Target.linuxX64,
-                path: AssetAbsolutePath(dylibAfterCompiling.uri),
+                linkMode: DynamicLoadingBundledImpl(),
+                os: OSImpl.linux,
+                architecture: ArchitectureImpl.x64,
+                file: dylibAfterCompiling.uri,
               ),
             ],
           ),
@@ -337,18 +338,20 @@ void main() {
             Package('bar', projectUri),
           ],
           dryRunResult: FakeNativeAssetsBuilderResult(
-            assets: <Asset>[
-              Asset(
+            assets: <AssetImpl>[
+              NativeCodeAssetImpl(
                 id: 'package:bar/bar.dart',
-                linkMode: LinkMode.static,
-                target: native_assets_cli.Target.macOSArm64,
-                path: AssetAbsolutePath(Uri.file('bar.a')),
+                linkMode: StaticLinkingImpl(),
+                os: OSImpl.macOS,
+                architecture: ArchitectureImpl.arm64,
+                file: Uri.file('bar.a'),
               ),
-              Asset(
+              NativeCodeAssetImpl(
                 id: 'package:bar/bar.dart',
-                linkMode: LinkMode.static,
-                target: native_assets_cli.Target.macOSX64,
-                path: AssetAbsolutePath(Uri.file('bar.a')),
+                linkMode: StaticLinkingImpl(),
+                os: OSImpl.macOS,
+                architecture: ArchitectureImpl.x64,
+                file: Uri.file('bar.a'),
               ),
             ],
           ),
@@ -460,12 +463,13 @@ void main() {
     );
     final NativeAssetsBuildRunner runner =
         NativeAssetsBuildRunnerImpl(projectUri, packageConfig, fileSystem, logger);
-    final CCompilerConfig result = await runner.cCompilerConfig;
-    expect(result.cc, Uri.file('/some/path/to/clang'));
+    final CCompilerConfigImpl result = await runner.cCompilerConfig;
+    expect(result.compiler, Uri.file('/some/path/to/clang'));
   });
 }
 
 class _BuildRunnerWithoutClang extends FakeNativeAssetsBuildRunner {
   @override
-  Future<CCompilerConfig> get cCompilerConfig async => throwToolExit('Failed to find clang++ on the PATH.');
+  Future<CCompilerConfigImpl> get cCompilerConfig async =>
+      throwToolExit('Failed to find clang++ on the PATH.');
 }

packages/flutter_tools/test/general.shard/isolated/macos/native_assets_test.dart

@@ -16,7 +16,7 @@ import 'package:flutter_tools/src/globals.dart' as globals;
 import 'package:flutter_tools/src/isolated/native_assets/macos/native_assets.dart';
 import 'package:flutter_tools/src/isolated/native_assets/native_assets.dart';
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    hide BuildMode, Target;
+    hide Target;
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     as native_assets_cli;
 import 'package:package_config/package_config_types.dart';
@@ -146,18 +146,20 @@ void main() {
           Package('bar', projectUri),
         ],
         dryRunResult: FakeNativeAssetsBuilderResult(
-          assets: <Asset>[
-            Asset(
+          assets: <AssetImpl>[
+            NativeCodeAssetImpl(
               id: 'package:bar/bar.dart',
-              linkMode: LinkMode.dynamic,
-              target: native_assets_cli.Target.macOSArm64,
-              path: AssetAbsolutePath(Uri.file('libbar.dylib')),
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.macOS,
+              architecture: ArchitectureImpl.arm64,
+              file: Uri.file('libbar.dylib'),
             ),
-            Asset(
+            NativeCodeAssetImpl(
               id: 'package:bar/bar.dart',
-              linkMode: LinkMode.dynamic,
-              target: native_assets_cli.Target.macOSX64,
-              path: AssetAbsolutePath(Uri.file('libbar.dylib')),
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.macOS,
+              architecture: ArchitectureImpl.x64,
+              file: Uri.file('libbar.dylib'),
             ),
           ],
         ),
@@ -302,12 +304,13 @@ void main() {
             Package('bar', projectUri),
           ],
           onBuild: (native_assets_cli.Target target) => FakeNativeAssetsBuilderResult(
-            assets: <Asset>[
-              Asset(
+            assets: <AssetImpl>[
+              NativeCodeAssetImpl(
                 id: 'package:bar/bar.dart',
-                linkMode: LinkMode.dynamic,
-                target: target,
-                path: AssetAbsolutePath(Uri.file('${target.architecture}/libbar.dylib')),
+                linkMode: DynamicLoadingBundledImpl(),
+                os: target.os,
+                architecture: target.architecture,
+                file: Uri.file('${target.architecture}/libbar.dylib'),
               ),
             ],
           ),
@@ -355,18 +358,20 @@ void main() {
             Package('bar', projectUri),
           ],
           dryRunResult: FakeNativeAssetsBuilderResult(
-            assets: <Asset>[
-              Asset(
+            assets: <AssetImpl>[
+              NativeCodeAssetImpl(
                 id: 'package:bar/bar.dart',
-                linkMode: LinkMode.static,
-                target: native_assets_cli.Target.macOSArm64,
-                path: AssetAbsolutePath(Uri.file('bar.a')),
+                linkMode: StaticLinkingImpl(),
+                os: OSImpl.macOS,
+                architecture: ArchitectureImpl.arm64,
+                file: Uri.file('bar.a'),
               ),
-              Asset(
+              NativeCodeAssetImpl(
                 id: 'package:bar/bar.dart',
-                linkMode: LinkMode.static,
-                target: native_assets_cli.Target.macOSX64,
-                path: AssetAbsolutePath(Uri.file('bar.a')),
+                linkMode: StaticLinkingImpl(),
+                os: OSImpl.macOS,
+                architecture: ArchitectureImpl.x64,
+                file: Uri.file('bar.a'),
               ),
             ],
           ),
@@ -479,9 +484,9 @@ InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault
       fileSystem,
       logger,
     );
-    final CCompilerConfig result = await runner.cCompilerConfig;
+    final CCompilerConfigImpl result = await runner.cCompilerConfig;
     expect(
-      result.cc,
+      result.compiler,
       Uri.file(
         '/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang',
       ),

packages/flutter_tools/test/general.shard/isolated/windows/native_assets_test.dart

@@ -17,9 +17,7 @@ import 'package:flutter_tools/src/globals.dart' as globals;
 import 'package:flutter_tools/src/isolated/native_assets/native_assets.dart';
 import 'package:flutter_tools/src/isolated/native_assets/windows/native_assets.dart';
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    hide BuildMode, Target;
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    as native_assets_cli;
+    hide Target;
 import 'package:package_config/package_config_types.dart';
 
 import '../../../src/common.dart';
@@ -145,12 +143,13 @@ void main() {
           Package('bar', projectUri),
         ],
         dryRunResult: FakeNativeAssetsBuilderResult(
-          assets: <Asset>[
-            Asset(
+          assets: <AssetImpl>[
+            NativeCodeAssetImpl(
               id: 'package:bar/bar.dart',
-              linkMode: LinkMode.dynamic,
-              target: native_assets_cli.Target.windowsX64,
-              path: AssetAbsolutePath(Uri.file('bar.dll')),
+              linkMode: DynamicLoadingBundledImpl(),
+              os: OSImpl.windows,
+              architecture: ArchitectureImpl.x64,
+              file: Uri.file('bar.dll'),
             ),
           ],
         ),
@@ -255,12 +254,13 @@ void main() {
             Package('bar', projectUri),
           ],
           buildResult: FakeNativeAssetsBuilderResult(
-            assets: <Asset>[
-              Asset(
+            assets: <AssetImpl>[
+              NativeCodeAssetImpl(
                 id: 'package:bar/bar.dart',
-                linkMode: LinkMode.dynamic,
-                target: native_assets_cli.Target.windowsX64,
-                path: AssetAbsolutePath(dylibAfterCompiling.uri),
+                linkMode: DynamicLoadingBundledImpl(),
+                os: OSImpl.windows,
+                architecture: ArchitectureImpl.x64,
+                file: dylibAfterCompiling.uri,
               ),
             ],
           ),
@@ -308,12 +308,13 @@ void main() {
             Package('bar', projectUri),
           ],
           dryRunResult: FakeNativeAssetsBuilderResult(
-            assets: <Asset>[
-              Asset(
+            assets: <AssetImpl>[
+              NativeCodeAssetImpl(
                 id: 'package:bar/bar.dart',
-                linkMode: LinkMode.static,
-                target: native_assets_cli.Target.windowsX64,
-                path: AssetAbsolutePath(Uri.file(OS.windows.staticlibFileName('bar'))),
+                linkMode: StaticLinkingImpl(),
+                os: OSImpl.windows,
+                architecture: ArchitectureImpl.x64,
+                file: Uri.file(OSImpl.windows.staticlibFileName('bar')),
               ),
             ],
           ),
@@ -492,10 +493,19 @@ void main() {
       fileSystem,
       logger,
     );
-    final CCompilerConfig result = await runner.cCompilerConfig;
-    expect(result.cc?.toFilePath(), msvcBinDir.childFile('cl.exe').uri.toFilePath());
-    expect(result.ar?.toFilePath(), msvcBinDir.childFile('lib.exe').uri.toFilePath());
-    expect(result.ld?.toFilePath(), msvcBinDir.childFile('link.exe').uri.toFilePath());
+    final CCompilerConfigImpl result = await runner.cCompilerConfig;
+    expect(
+      result.compiler?.toFilePath(),
+      msvcBinDir.childFile('cl.exe').uri.toFilePath(),
+    );
+    expect(
+      result.archiver?.toFilePath(),
+      msvcBinDir.childFile('lib.exe').uri.toFilePath(),
+    );
+    expect(
+      result.linker?.toFilePath(),
+      msvcBinDir.childFile('link.exe').uri.toFilePath(),
+    );
     expect(result.envScript, isNotNull);
     expect(result.envScriptArgs, isNotNull);
   });

packages/flutter_tools/test/integration.shard/isolated/native_assets_test.dart

@@ -227,16 +227,17 @@ void main() {
     testWithoutContext('flutter build $buildSubcommand error on static libraries', () async {
       await inTempDir((Directory tempDirectory) async {
         final Directory packageDirectory = await createTestProject(packageName, tempDirectory);
-        final File buildDotDart = packageDirectory.childFile('build.dart');
+        final File buildDotDart =
+            packageDirectory.childDirectory('hook').childFile('build.dart');
         final String buildDotDartContents = await buildDotDart.readAsString();
         // Overrides the build to output static libraries.
         final String buildDotDartContentsNew = buildDotDartContents.replaceFirst(
-          'final buildConfig = await BuildConfig.fromArgs(args);',
+          'await build(args, (config, output) async {',
           '''
-  final buildConfig = await BuildConfig.fromArgs([
-    '-D${LinkModePreference.configKey}=${LinkModePreference.static}',
+  await build([
+    '-D${LinkModePreferenceImpl.configKey}=${LinkModePreferenceImpl.static}',
     ...args,
-  ]);
+  ], (config, output) async {
 ''',
         );
         expect(buildDotDartContentsNew, isNot(buildDotDartContents));
@@ -344,7 +345,7 @@ void expectDylibIsBundledIos(Directory appDirectory, String buildMode) {
 /// Sample path: build/linux/x64/release/bundle/lib/libmy_package.so
 void expectDylibIsBundledLinux(Directory appDirectory, String buildMode) {
   // Linux does not support cross compilation, so always only check current architecture.
-  final String architecture = Architecture.current.dartPlatform;
+  final String architecture = ArchitectureImpl.current.dartPlatform;
   final Directory appBundle = appDirectory
       .childDirectory('build')
       .childDirectory(hostOs)
@@ -354,7 +355,8 @@ void expectDylibIsBundledLinux(Directory appDirectory, String buildMode) {
   expect(appBundle, exists);
   final Directory dylibsFolder = appBundle.childDirectory('lib');
   expect(dylibsFolder, exists);
-  final File dylib = dylibsFolder.childFile(OS.linux.dylibFileName(packageName));
+  final File dylib =
+      dylibsFolder.childFile(OSImpl.linux.dylibFileName(packageName));
   expect(dylib, exists);
 }
 
@@ -363,7 +365,7 @@ void expectDylibIsBundledLinux(Directory appDirectory, String buildMode) {
 /// Sample path: build\windows\x64\runner\Debug\my_package_example.exe
 void expectDylibIsBundledWindows(Directory appDirectory, String buildMode) {
   // Linux does not support cross compilation, so always only check current architecture.
-  final String architecture = Architecture.current.dartPlatform;
+  final String architecture = ArchitectureImpl.current.dartPlatform;
   final Directory appBundle = appDirectory
       .childDirectory('build')
       .childDirectory(hostOs)
@@ -371,7 +373,8 @@ void expectDylibIsBundledWindows(Directory appDirectory, String buildMode) {
       .childDirectory('runner')
       .childDirectory(buildMode.upperCaseFirst());
   expect(appBundle, exists);
-  final File dylib = appBundle.childFile(OS.windows.dylibFileName(packageName));
+  final File dylib =
+      appBundle.childFile(OSImpl.windows.dylibFileName(packageName));
   expect(dylib, exists);
 }
 
@@ -401,7 +404,8 @@ void expectDylibIsBundledAndroid(Directory appDirectory, String buildMode) {
     if (buildMode != 'debug') {
       expect(archDir.childFile('libapp.so'), exists);
     }
-    final File dylib = archDir.childFile(OS.android.dylibFileName(packageName));
+    final File dylib =
+        archDir.childFile(OSImpl.android.dylibFileName(packageName));
     expect(dylib, exists);
   }
 }
@@ -424,14 +428,14 @@ void expectDylibIsBundledWithFrameworks(Directory appDirectory, String buildMode
 void expectCCompilerIsConfigured(Directory appDirectory) {
   final Directory nativeAssetsBuilderDir = appDirectory.childDirectory('.dart_tool/native_assets_builder/');
   for (final Directory subDir in nativeAssetsBuilderDir.listSync().whereType<Directory>()) {
-    final File config = subDir.childFile('config.yaml');
+    final File config = subDir.childFile('config.json');
     expect(config, exists);
     final String contents = config.readAsStringSync();
     // Dry run does not pass compiler info.
-    if (contents.contains('dry_run: true')) {
+    if (contents.contains('"dry_run": true')) {
       continue;
     }
-    expect(contents, contains('cc: '));
+    expect(contents, contains('"cc": '));
   }
 }