pkg/vm/lib/target/flutter.dart

// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
// 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.
library vm.target.flutter;

import 'package:kernel/ast.dart' show Component, Library;
import 'package:kernel/core_types.dart' show CoreTypes;
import 'package:kernel/target/changed_structure_notifier.dart';
import 'package:kernel/target/targets.dart';
import 'package:kernel/transformations/track_widget_constructor_locations.dart';
import 'package:vm/target/vm.dart' show VmTarget;

class FlutterTarget extends VmTarget {
  FlutterTarget(TargetFlags flags) : super(flags);

  WidgetCreatorTracker _widgetTracker;

  @override
  String get name => 'flutter';

  @override
  bool get enableSuperMixins => true;

  // This is the order that bootstrap libraries are loaded according to
  // `runtime/vm/object_store.h`.
  @override
  List<String> get extraRequiredLibraries => const <String>[
        'dart:async',
        'dart:collection',
        'dart:convert',
        'dart:developer',
        'dart:ffi',
        'dart:_internal',
        'dart:isolate',
        'dart:math',

        // The library dart:mirrors may be ignored by the VM, e.g. when built in
        // PRODUCT mode.
        'dart:mirrors',

        'dart:typed_data',
        'dart:nativewrappers',
        'dart:io',

        // Required for flutter.
        'dart:ui',
        'dart:vmservice_io',
      ];

  @override
  List<String> get extraRequiredLibrariesPlatform => const <String>[];

  @override
  void performPreConstantEvaluationTransformations(
      Component component,
      CoreTypes coreTypes,
      List<Library> libraries,
      DiagnosticReporter diagnosticReporter,
      {void logger(String msg),
      ChangedStructureNotifier changedStructureNotifier}) {
    super.performPreConstantEvaluationTransformations(
        component, coreTypes, libraries, diagnosticReporter,
        logger: logger, changedStructureNotifier: changedStructureNotifier);
    if (flags.trackWidgetCreation) {
      if (_widgetTracker == null) {
        _widgetTracker = WidgetCreatorTracker();
      }
      _widgetTracker.transform(component, libraries, changedStructureNotifier);
    }
  }
}