Fasta targets and loaders.

pkg/fasta/lib/src/dill/dill_target.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 fasta.dill_target;
+
+import 'dart:async' show
+    Future;
+
+import 'package:kernel/ast.dart' show
+    Class;
+
+import 'dill_loader.dart' show
+    DillLoader;
+
+import '../errors.dart' show
+    inputError,
+    internalError;
+
+import '../target_implementation.dart' show
+    TargetImplementation;
+
+import '../ticker.dart' show
+    Ticker;
+
+import '../translate_uri.dart' show
+    TranslateUri;
+
+import '../ast_kind.dart' show
+    AstKind;
+
+import '../kernel/kernel_builder.dart' show
+    ClassBuilder,
+    KernelClassBuilder;
+
+import 'dill_library_builder.dart' show
+    DillLibraryBuilder;
+
+class DillTarget extends TargetImplementation {
+  bool isLoaded = false;
+  DillLoader loader;
+
+  DillTarget(Ticker ticker, TranslateUri uriTranslator)
+      : super(ticker, uriTranslator) {
+    loader = new DillLoader(this);
+  }
+
+  void read(Uri uri) {
+    if (loader.input == null) {
+      loader.input = uri;
+    } else {
+      inputError(uri, -1, "Can only read one dill file.");
+    }
+  }
+
+  Future<Null> writeProgram(Uri uri, AstKind kind) {
+    return internalError("not implemented.");
+  }
+
+  Future<Null> writeOutline(Uri uri) async {
+    if (loader.input == null) return null;
+    await loader.buildOutlines();
+    isLoaded = true;
+    return null;
+  }
+
+  DillLibraryBuilder createLibraryBuilder(Uri uri) {
+    return new DillLibraryBuilder(uri, loader);
+  }
+
+  void addDirectSupertype(ClassBuilder cls, Set<ClassBuilder> set) {
+  }
+
+  List<ClassBuilder> collectAllClasses() {
+    return null;
+  }
+
+  void breakCycle(ClassBuilder cls) {
+  }
+
+  Class get objectClass {
+    KernelClassBuilder builder = loader.coreLibrary.exports["Object"];
+    return builder.cls;
+  }
+}