tool: DRY up DepfileService (#125922)

packages/flutter_tools/lib/src/build_system/build_system.dart

@@ -18,6 +18,7 @@ import '../base/utils.dart';
 import '../cache.dart';
 import '../convert.dart';
 import '../reporting/reporting.dart';
+import 'depfile.dart';
 import 'exceptions.dart';
 import 'file_store.dart';
 import 'source.dart';
@@ -524,6 +525,11 @@ class Environment {
   /// When [true], the main entrypoint is wrapped and the wrapper becomes
   /// the new entrypoint.
   final bool generateDartPluginRegistry;
+
+  late final DepfileService depFileService = DepfileService(
+    logger: logger,
+    fileSystem: fileSystem,
+  );
 }
 
 /// The result information from the build system.

packages/flutter_tools/lib/src/build_system/targets/android.dart

@@ -69,11 +69,7 @@ abstract class AndroidAssetBundle extends Target {
       buildMode: buildMode,
       shaderTarget: ShaderTarget.impellerAndroid,
     );
-    final DepfileService depfileService = DepfileService(
-      fileSystem: environment.fileSystem,
-      logger: environment.logger,
-    );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       assetDepfile,
       environment.buildDir.childFile('flutter_assets.d'),
     );
@@ -264,11 +260,7 @@ class AndroidAot extends AotElfBase {
         outputs.add(environment.fileSystem.file(unit.path));
       }
     }
-    final DepfileService depfileService = DepfileService(
-      fileSystem: environment.fileSystem,
-      logger: environment.logger,
-    );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       Depfile(<File>[], outputs),
       environment.buildDir.childFile('flutter_$name.d'),
       writeEmpty: true,
@@ -351,11 +343,7 @@ class AndroidAotBundle extends Target {
       inputs.add(manifestFile);
       outputs.add(destinationFile);
     }
-    final DepfileService depfileService = DepfileService(
-      fileSystem: environment.fileSystem,
-      logger: environment.logger,
-    );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       Depfile(inputs, outputs),
       environment.buildDir.childFile('flutter_$name.d'),
       writeEmpty: true,
@@ -433,11 +421,7 @@ class AndroidAotDeferredComponentsBundle extends Target {
       libDepfile.inputs.add(manifestFile);
     }
 
-    final DepfileService depfileService = DepfileService(
-      fileSystem: environment.fileSystem,
-      logger: environment.logger,
-    );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       libDepfile,
       environment.buildDir.childFile('flutter_$name.d'),
       writeEmpty: true,

packages/flutter_tools/lib/src/build_system/targets/assets.dart

@@ -323,11 +323,7 @@ class CopyAssets extends Target {
       targetPlatform: TargetPlatform.android,
       shaderTarget: ShaderTarget.sksl,
     );
-    final DepfileService depfileService = DepfileService(
-      fileSystem: environment.fileSystem,
-      logger: environment.logger,
-    );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       depfile,
       environment.buildDir.childFile('flutter_assets.d'),
     );

packages/flutter_tools/lib/src/build_system/targets/common.dart

@@ -77,11 +77,7 @@ class CopyFlutterBundle extends Target {
       buildMode: buildMode,
       shaderTarget: ShaderTarget.sksl,
     );
-    final DepfileService depfileService = DepfileService(
-      fileSystem: environment.fileSystem,
-      logger: environment.logger,
-    );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       assetDepfile,
       environment.buildDir.childFile('flutter_assets.d'),
     );

packages/flutter_tools/lib/src/build_system/targets/deferred_components.dart

@@ -74,10 +74,6 @@ class DeferredComponentsGenSnapshotValidatorTarget extends Target {
 
   @override
   Future<void> build(Environment environment) async {
-    final DepfileService depfileService = DepfileService(
-      fileSystem: environment.fileSystem,
-      logger: environment.logger,
-    );
     validator = DeferredComponentsGenSnapshotValidator(
       environment,
       title: title,
@@ -100,7 +96,7 @@ class DeferredComponentsGenSnapshotValidatorTarget extends Target {
 
     validator!.handleResults();
 
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       Depfile(validator!.inputs, validator!.outputs),
       environment.buildDir.childFile('flutter_$name.d'),
     );

packages/flutter_tools/lib/src/build_system/targets/ios.dart

@@ -526,11 +526,7 @@ abstract class IosAssetBundle extends Target {
         flutterProject.ios.appFrameworkInfoPlist,
       ],
     );
-    final DepfileService depfileService = DepfileService(
-      fileSystem: environment.fileSystem,
-      logger: environment.logger,
-    );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       assetDepfile,
       environment.buildDir.childFile('flutter_assets.d'),
     );

packages/flutter_tools/lib/src/build_system/targets/linux.dart

@@ -84,11 +84,7 @@ class UnpackLinux extends Target {
         platform: targetPlatform,
       )
     );
-    final DepfileService depfileService = DepfileService(
-      fileSystem: environment.fileSystem,
-      logger: environment.logger,
-    );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       depfile,
       environment.buildDir.childFile(_kLinuxDepfile),
     );
@@ -147,11 +143,7 @@ abstract class BundleLinuxAssets extends Target {
       },
       shaderTarget: ShaderTarget.sksl,
     );
-    final DepfileService depfileService = DepfileService(
-      fileSystem: environment.fileSystem,
-      logger: environment.logger,
-    );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       depfile,
       environment.buildDir.childFile('flutter_assets.d'),
     );

packages/flutter_tools/lib/src/build_system/targets/localizations.dart

@@ -57,10 +57,6 @@ class GenerateLocalizationsTarget extends Target {
       logger: environment.logger,
       defaultArbDir: defaultArbDir,
     );
-    final DepfileService depfileService = DepfileService(
-      logger: environment.logger,
-      fileSystem: environment.fileSystem,
-    );
     generateLocalizations(
       logger: environment.logger,
       options: options,
@@ -87,7 +83,7 @@ class GenerateLocalizationsTarget extends Target {
             environment.fileSystem.file(outputFile),
       ],
     );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       depfile,
       environment.buildDir.childFile('gen_localizations.d'),
     );

packages/flutter_tools/lib/src/build_system/targets/macos.dart

@@ -419,11 +419,7 @@ abstract class MacOSBundleFlutterAssets extends Target {
       targetPlatform: TargetPlatform.darwin,
       shaderTarget: ShaderTarget.sksl,
     );
-    final DepfileService depfileService = DepfileService(
-      fileSystem: environment.fileSystem,
-      logger: environment.logger,
-    );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       assetDepfile,
       environment.buildDir.childFile('flutter_assets.d'),
     );

packages/flutter_tools/lib/src/build_system/targets/web.dart

@@ -218,16 +218,13 @@ class Dart2JSTarget extends Dart2WebTarget {
         '${dart2jsDeps.path}');
       return;
     }
-    final DepfileService depfileService = DepfileService(
-      fileSystem: globals.fs,
-      logger: globals.logger,
-    );
-    final Depfile depfile = depfileService.parseDart2js(
+    final DepfileService depFileService = environment.depFileService;
+    final Depfile depFile = depFileService.parseDart2js(
       environment.buildDir.childFile('app.dill.deps'),
       outputJSFile,
     );
-    depfileService.writeToFile(
-      depfile,
+    depFileService.writeToFile(
+      depFile,
       environment.buildDir.childFile('dart2js.d'),
     );
   }
@@ -409,10 +406,7 @@ class WebReleaseBundle extends Target {
       targetPlatform: TargetPlatform.web_javascript,
       shaderTarget: ShaderTarget.sksl,
     );
-    final DepfileService depfileService = DepfileService(
-      fileSystem: globals.fs,
-      logger: globals.logger,
-    );
+    final DepfileService depfileService = environment.depFileService;
     depfileService.writeToFile(
       depfile,
       environment.buildDir.childFile('flutter_assets.d'),
@@ -627,11 +621,7 @@ class WebServiceWorker extends Target {
     );
     serviceWorkerFile
       .writeAsStringSync(serviceWorker);
-    final DepfileService depfileService = DepfileService(
-      fileSystem: globals.fs,
-      logger: globals.logger,
-    );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       depfile,
       environment.buildDir.childFile('service_worker.d'),
     );

packages/flutter_tools/lib/src/build_system/targets/windows.dart

@@ -88,11 +88,7 @@ class UnpackWindows extends Target {
         platform: TargetPlatform.windows_x64
       )
     );
-    final DepfileService depfileService = DepfileService(
-      fileSystem: environment.fileSystem,
-      logger: environment.logger,
-    );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       depfile,
       environment.buildDir.childFile(_kWindowsDepfile),
     );
@@ -145,11 +141,7 @@ abstract class BundleWindowsAssets extends Target {
       targetPlatform: TargetPlatform.windows_x64,
       shaderTarget: ShaderTarget.sksl,
     );
-    final DepfileService depfileService = DepfileService(
-      fileSystem: environment.fileSystem,
-      logger: environment.logger,
-    );
-    depfileService.writeToFile(
+    environment.depFileService.writeToFile(
       depfile,
       environment.buildDir.childFile('flutter_assets.d'),
     );

packages/flutter_tools/lib/src/bundle_builder.dart

@@ -90,11 +90,7 @@ class BundleBuilder {
     if (!outputDepfile.parent.existsSync()) {
       outputDepfile.parent.createSync(recursive: true);
     }
-    final DepfileService depfileService = DepfileService(
-      fileSystem: globals.fs,
-      logger: globals.logger,
-    );
-    depfileService.writeToFile(depfile, outputDepfile);
+    environment.depFileService.writeToFile(depfile, outputDepfile);
 
     // Work around for flutter_tester placing kernel artifacts in odd places.
     if (applicationKernelFilePath != null) {

packages/flutter_tools/lib/src/commands/assemble.dart

@@ -140,7 +140,7 @@ class AssembleCommand extends FlutterCommand {
     final FlutterProject flutterProject = FlutterProject.current();
     try {
       return CustomDimensions(
-        commandBuildBundleTargetPlatform: environment.defines[kTargetPlatform],
+        commandBuildBundleTargetPlatform: _environment.defines[kTargetPlatform],
         commandBuildBundleIsModule: flutterProject.isModule,
       );
     } on Exception {
@@ -151,7 +151,7 @@ class AssembleCommand extends FlutterCommand {
 
   @override
   Future<Set<DevelopmentArtifact>> get requiredArtifacts async {
-    final String? platform = environment.defines[kTargetPlatform];
+    final String? platform = _environment.defines[kTargetPlatform];
     if (platform == null) {
       return super.requiredArtifacts;
     }
@@ -204,10 +204,10 @@ class AssembleCommand extends FlutterCommand {
     return false;
   }
 
-  late final Environment environment = createEnvironment();
+  late final Environment _environment = _createEnvironment();
 
   /// The environmental configuration for a build invocation.
-  Environment createEnvironment() {
+  Environment _createEnvironment() {
     final FlutterProject flutterProject = FlutterProject.current();
     String? output = stringArg('output');
     if (output == null) {
@@ -289,7 +289,7 @@ class AssembleCommand extends FlutterCommand {
     Target? target;
     List<String> decodedDefines;
     try {
-      decodedDefines = decodeDartDefines(environment.defines, kDartDefines);
+      decodedDefines = decodeDartDefines(_environment.defines, kDartDefines);
     } on FormatException {
       throwToolExit(
         'Error parsing assemble command: your generated configuration may be out of date. '
@@ -314,7 +314,7 @@ class AssembleCommand extends FlutterCommand {
     final ArgResults argumentResults = argResults!;
     final BuildResult result = await _buildSystem.build(
       target!,
-      environment,
+      _environment,
       buildSystemConfig: BuildSystemConfig(
         resourcePoolSize: argumentResults.wasParsed('resource-pool-size')
           ? int.tryParse(stringArg('resource-pool-size')!)
@@ -346,11 +346,7 @@ class AssembleCommand extends FlutterCommand {
     if (argumentResults.wasParsed('depfile')) {
       final File depfileFile = globals.fs.file(stringArg('depfile'));
       final Depfile depfile = Depfile(result.inputFiles, result.outputFiles);
-      final DepfileService depfileService = DepfileService(
-        fileSystem: globals.fs,
-        logger: globals.logger,
-      );
-      depfileService.writeToFile(depfile, globals.fs.file(depfileFile));
+      _environment.depFileService.writeToFile(depfile, globals.fs.file(depfileFile));
     }
     return FlutterCommandResult.success();
   }

packages/flutter_tools/test/general.shard/build_system/targets/assets_test.dart

@@ -67,11 +67,7 @@ flutter:
 
     expect(depfile, exists);
 
-    final DepfileService depfileService = DepfileService(
-      logger: BufferLogger.test(),
-      fileSystem: fileSystem,
-    );
-    final Depfile dependencies = depfileService.parse(depfile);
+    final Depfile dependencies = environment.depFileService.parse(depfile);
 
     expect(
       dependencies.inputs.firstWhereOrNull((File file) => file.path == '/bar/LICENSE'),

packages/flutter_tools/test/general.shard/build_system/targets/web_test.dart

@@ -39,7 +39,6 @@ void main() {
     operatingSystem: 'windows',
     environment: <String, String>{},
   );
-  late DepfileService depfileService;
 
   setUp(() {
     testbed = Testbed(setup: () {
@@ -61,10 +60,6 @@ void main() {
         logger: globals.logger,
         fileSystem: globals.fs,
       );
-      depfileService = DepfileService(
-      fileSystem: globals.fs,
-      logger: globals.logger,
-    );
       environment.buildDir.createSync(recursive: true);
     }, overrides: <Type, Generator>{
       Platform: () => linux,
@@ -573,7 +568,7 @@ void main() {
     await Dart2JSTarget(WebRendererMode.auto).build(environment);
 
     expect(environment.buildDir.childFile('dart2js.d'), exists);
-    final Depfile depfile = depfileService.parse(environment.buildDir.childFile('dart2js.d'));
+    final Depfile depfile = environment.depFileService.parse(environment.buildDir.childFile('dart2js.d'));
 
     expect(depfile.inputs.single.path, globals.fs.path.absolute('a.dart'));
     expect(depfile.outputs.single.path,

packages/flutter_tools/test/general.shard/build_system/targets/windows_test.dart

@@ -9,7 +9,6 @@ import 'package:flutter_tools/src/base/file_system.dart';
 import 'package:flutter_tools/src/base/logger.dart';
 import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/build_system/build_system.dart';
-import 'package:flutter_tools/src/build_system/depfile.dart';
 import 'package:flutter_tools/src/build_system/targets/common.dart';
 import 'package:flutter_tools/src/build_system/targets/windows.dart';
 import 'package:flutter_tools/src/convert.dart';
@@ -31,10 +30,6 @@ void main() {
         kBuildMode: 'debug',
       },
     );
-    final DepfileService depfileService = DepfileService(
-      logger: BufferLogger.test(),
-      fileSystem: fileSystem,
-    );
     environment.buildDir.createSync(recursive: true);
 
     final String windowsDesktopPath = artifacts.getArtifactPath(Artifact.windowsDesktopPath, platform: TargetPlatform.windows_x64, mode: BuildMode.debug);
@@ -83,9 +78,9 @@ void main() {
     // Depfile is created correctly.
     expect(outputDepfile, exists);
 
-    final List<String> inputPaths = depfileService.parse(outputDepfile)
+    final List<String> inputPaths = environment.depFileService.parse(outputDepfile)
       .inputs.map((File file) => file.path).toList();
-    final List<String> outputPaths = depfileService.parse(outputDepfile)
+    final List<String> outputPaths = environment.depFileService.parse(outputDepfile)
       .outputs.map((File file) => file.path).toList();
 
     // Depfile has expected sources.