Add link.dart hook

pkgs/native_assets_builder/test_data/treeshaking_native_assets/hook/link.dart

@@ -10,8 +10,7 @@ const packageName = 'treeshaking_native_assets';
 
 void main(List<String> arguments) async {
   await link(arguments, (config, output) async {
-    final usedSymbols = config.treeshakingInformation
-        ?.map((resource) => resource.metadata.toString());
+    final List<String>? usedSymbols = [];
     final dynamicLibrary = config.assets.firstWhere((asset) =>
         asset.id == 'package:$packageName/src/${packageName}_bindings.dart');
     final staticLibrary = config.assets

pkgs/native_assets_cli/example/link/package_with_assets/hook/link.dart

@@ -6,11 +6,7 @@ import 'package:native_assets_cli/native_assets_cli.dart';
 
 void main(List<String> args) async {
   await link(args, (config, output) async {
-    final assetsWithResource = config.assets.whereType<DataAsset>().where(
-        (asset) =>
-            config.treeshakingInformation
-                ?.any((resource) => resource.metadata == asset.name) ??
-            true);
-    output.addAssets(assetsWithResource);
+    final dataAssets = config.assets.whereType<DataAsset>();
+    output.addAssets(dataAssets);
   });
 }

pkgs/native_assets_cli/lib/native_assets_cli.dart

@@ -28,4 +28,3 @@ export 'src/api/link.dart';
 export 'src/api/link_config.dart' show LinkConfig;
 export 'src/api/link_mode_preference.dart' show LinkModePreference;
 export 'src/api/os.dart' show OS;
-export 'src/api/resource.dart';

pkgs/native_assets_cli/lib/native_assets_cli_internal.dart

@@ -36,7 +36,6 @@ export 'src/api/ios_sdk.dart' show IOSSdkImpl;
 export 'src/api/link_config.dart' show LinkConfigImpl;
 export 'src/api/link_mode_preference.dart' show LinkModePreferenceImpl;
 export 'src/api/os.dart' show OSImpl;
-export 'src/api/resource.dart';
 export 'src/model/dependencies.dart';
 export 'src/model/hook.dart';
 export 'src/model/metadata.dart';

pkgs/native_assets_cli/lib/src/api/link.dart

@@ -15,22 +15,15 @@ import 'link_config.dart';
 /// through [LinkConfig.assets]. They will only be bundled with the final
 /// application if included in the [LinkOutput].
 ///
-/// As the linking runs after kernel compilation, you can use treeshaking
-/// information provided through [LinkConfig.treeshakingInformation] to decide
-/// which assets to include. The resources are only collected in AOT mode,
-/// therefore the field is null in JIT mode.
-///
 ///
 /// ```dart
 /// import 'package:native_assets_cli/native_assets_cli.dart';
 ///
 /// void main(List<String> args) async {
 ///   await link(args, (config, output) async {
-///     final assetsWithResource = config.assets
-///         .whereType<DataAsset>()
-///         .where((asset) => config.resources
-///             .any((resource) => resource.metadata == asset.name));
-///     output.addAssets(assetsWithResource);
+///     final dataAssets = config.assets
+///         .whereType<DataAsset>();
+///     output.addAssets(dataAssets);
 ///   });
 /// }
 /// ```

pkgs/native_assets_cli/lib/src/api/link_config.dart

@@ -10,7 +10,6 @@ import 'package:collection/collection.dart';
 import 'package:pub_semver/pub_semver.dart';
 
 import '../model/hook.dart';
-import '../model/resource_identifiers.dart';
 import '../utils/map.dart';
 import 'architecture.dart';
 import 'asset.dart';
@@ -20,28 +19,18 @@ import 'hook_config.dart';
 import 'ios_sdk.dart';
 import 'link_mode_preference.dart';
 import 'os.dart';
-import 'resource.dart';
 
 part '../model/link_config.dart';
 
 /// The configuration for a link hook (`hook/link.dart`) invocation.
 ///
 /// It consists of a subset of the fields from the [BuildConfig] already passed
-/// to the build hook, the [assets] from the build step, and the
-/// [treeshakingInformation] generated during the kernel compilation.
+/// to the build hook and the [assets] from the build step.
 abstract class LinkConfig implements HookConfig {
   /// The list of assets to be linked. These are the assets generated by a
   /// `build.dart` script destined for this packages `link.dart`.
   Iterable<Asset> get assets;
 
-  /// A collection of methods annotated with `@ResourceIdentifier`, which are
-  /// called in the tree-shaken Dart code. This information can be used to
-  /// dispose unused [assets].
-  ///
-  /// This is `null` in JIT mode, where no resources are collected, or in a dry
-  /// run.
-  Iterable<Resource>? get treeshakingInformation;
-
   /// Generate the [LinkConfig] from the input arguments to the linking script.
   factory LinkConfig.fromArguments(List<String> arguments) =>
       LinkConfigImpl.fromArguments(arguments);
@@ -58,14 +47,12 @@ abstract class LinkConfig implements HookConfig {
     List<String>? supportedAssetTypes,
     int? targetAndroidNdkApi,
     required Iterable<Asset> assets,
-    Uri? resourceIdentifierUri,
     required LinkModePreference linkModePreference,
     bool? dryRun,
     Version? version,
   }) =>
       LinkConfigImpl(
         assets: assets.cast(),
-        resourceIdentifierUri: resourceIdentifierUri,
         outputDirectory: outputDirectory,
         packageName: packageName,
         packageRoot: packageRoot,
@@ -88,13 +75,11 @@ abstract class LinkConfig implements HookConfig {
     required OS targetOS,
     List<String>? supportedAssetTypes,
     required Iterable<Asset> assets,
-    Uri? resourceIdentifierUri,
     required LinkModePreference linkModePreference,
     Version? version,
   }) =>
       LinkConfigImpl.dryRun(
         assets: assets.cast(),
-        resourceIdentifierUri: resourceIdentifierUri,
         outputDirectory: outputDirectory,
         packageName: packageName,
         packageRoot: packageRoot,

pkgs/native_assets_cli/lib/src/model/link_config.dart

@@ -4,16 +4,10 @@
 
 part of '../api/link_config.dart';
 
-List<Resource>? fromIdentifiers(ResourceIdentifiers resourceIdentifiers) =>
-    resourceIdentifiers.identifiers
-        .map((e) => Resource(name: e.name, metadata: e.id))
-        .toList();
-
 /// The input to the linking script.
 ///
-/// It consists of the fields inherited from the [HookConfig], the [assets] from
-/// the build step, and the [treeshakingInformation] generated during the kernel
-/// compilation.
+/// It consists of the fields inherited from the [HookConfig] and the [assets]
+/// from the build step.
 class LinkConfigImpl extends HookConfigImpl implements LinkConfig {
   static const resourceIdentifierKey = 'resource_identifiers';
 
@@ -22,17 +16,8 @@ class LinkConfigImpl extends HookConfigImpl implements LinkConfig {
   @override
   final Iterable<AssetImpl> assets;
 
-  Iterable<Resource>? _treeshakingInformation;
-
-  @override
-  Iterable<Resource>? get treeshakingInformation {
-    if (_resourceIdentifierUri != null && _treeshakingInformation == null) {
-      _treeshakingInformation = fromIdentifiers(
-          ResourceIdentifiers.fromFile(_resourceIdentifierUri.toFilePath()));
-    }
-    return _treeshakingInformation;
-  }
-
+  // TODO: Placeholder for the resources.json file URL. We don't want to change
+  // native_assets_builder when implementing the parsing.
   final Uri? _resourceIdentifierUri;
 
   LinkConfigImpl({
@@ -69,10 +54,6 @@ class LinkConfigImpl extends HookConfigImpl implements LinkConfig {
     required super.linkModePreference,
     required super.targetOS,
   })  : _resourceIdentifierUri = resourceIdentifierUri,
-        _treeshakingInformation = resourceIdentifierUri != null
-            ? fromIdentifiers(ResourceIdentifiers.fromFile(
-                resourceIdentifierUri.toFilePath()))
-            : null,
         super.dryRun(
           hook: Hook.link,
           version: version ?? HookConfigImpl.latestVersion,

pkgs/native_assets_cli/test/api/resource_data.dart

@@ -2,14 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:native_assets_cli/src/api/resource.dart';
 import 'package:native_assets_cli/src/model/resource_identifiers.dart';
 
-final resourceList = [
-  Resource(name: 'methodName1', metadata: 'someMetadata'),
-  Resource(name: 'methodName2', metadata: 'someOtherMetadata'),
-];
-
 const resourceFile = '''{
   "_comment": "Resources referenced by annotated resource identifiers",
   "AppTag": "TBD",

pkgs/native_assets_cli/test/model/link_config_test.dart

@@ -2,16 +2,13 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'dart:convert';
 import 'dart:io';
 
 import 'package:native_assets_cli/native_assets_cli.dart';
 import 'package:native_assets_cli/native_assets_cli_internal.dart';
 import 'package:native_assets_cli/src/api/asset.dart';
 import 'package:test/test.dart';
 
-import '../api/resource_data.dart';
-
 void main() async {
   late Uri tempUri;
   late Uri outDirUri;
@@ -59,8 +56,7 @@ void main() async {
     fakeVcVars = tempUri.resolve('vcvarsall.bat');
     await File.fromUri(fakeVcVars).create();
     resources = tempUri.resolve('resources.json');
-    final file = File.fromUri(resources)..createSync();
-    file.writeAsStringSync(jsonEncode(resourceIdentifiers));
+    File.fromUri(resources).createSync();
   });
 
   tearDown(() async {
@@ -115,8 +111,6 @@ void main() async {
         true);
     expect(config1.cCompiler != config2.cCompiler, true);
     expect(config1.assets != config2.assets, true);
-    expect(
-        config1.treeshakingInformation != config2.treeshakingInformation, true);
   });
 
   test('LinkConfig fromConfig', () {
@@ -196,25 +190,6 @@ void main() async {
     final fromConfig = LinkConfigImpl.fromJson(configFile);
     expect(fromConfig, equals(buildConfig1));
   });
-  test('LinkConfig fetch treeshaking information', () {
-    final buildConfig1 = LinkConfigImpl(
-      outputDirectory: outDirUri,
-      packageName: packageName,
-      packageRoot: packageRootUri,
-      targetArchitecture: ArchitectureImpl.arm64,
-      targetOS: OSImpl.iOS,
-      targetIOSSdk: IOSSdkImpl.iPhoneOS,
-      cCompiler: CCompilerConfigImpl(
-        compiler: fakeClang,
-        linker: fakeLd,
-      ),
-      buildMode: BuildModeImpl.release,
-      assets: assets,
-      resourceIdentifierUri: resources,
-      linkModePreference: LinkModePreferenceImpl.preferStatic,
-    );
-    expect(buildConfig1.treeshakingInformation, resourceList);
-  });
 
   test('LinkConfig toJson fromJson', () {
     final outDir = outDirUri;