Dart2js option to dump info about compilation

sdk/lib/_internal/compiler/implementation/dart2jslib.dart

 // Copyright (c) 2012, 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 dart2js;
 
 import 'dart:async';
 import 'dart:collection' show Queue;
+import 'dart:convert';

[ahe, 2013/11/27 19:28:53]

I'm pretty sure it is not appropriate to include this library in dart2js.

[sigurdm, 2013/11/29 10:39:37]

Done.

 
 import 'closure.dart' as closureMapping;
 import 'dart_backend/dart_backend.dart' as dart_backend;
 import 'dart_types.dart';
 import 'elements/elements.dart';
 import 'elements/modelx.dart'
     show ErroneousElementX,
          ClassElementX,
          CompilationUnitElementX,
          LibraryElementX,
          PrefixElementX,
          VoidElementX;
 import 'js_backend/js_backend.dart' as js_backend;
 import 'native_handler.dart' as native;
 import 'scanner/scannerlib.dart';
 import 'ssa/ssa.dart';
 import 'tree/tree.dart';
 import 'ir/ir_builder.dart' show IrBuilderTask;
 import 'universe/universe.dart';
 import 'util/util.dart';
 import 'util/characters.dart' show $_;
 import '../compiler.dart' as api;
 import 'patch_parser.dart';
 import 'types/types.dart' as ti;
 import 'resolution/resolution.dart';
 import 'source_file.dart' show SourceFile;
 import 'js/js.dart' as js;
 import 'deferred_load.dart' show DeferredLoadTask;
 import 'mirrors_used.dart' show MirrorUsageAnalyzerTask;
+import 'dart2js.dart' as commandline;

[ahe, 2013/11/27 19:28:53]

You cannot include this library.

The dart2js command line is implemented in terms of the compiler API.

The compiler API's implementation is this library. It does not include
dart2js.dart, in particular because dart2js imports dart:io making dart2js
unable to self-host. Hopefully some of our tests should catch this.

[sigurdm, 2013/11/29 10:39:37]

Done.

 
 export 'resolution/resolution.dart' show TreeElements, TreeElementMapping;
 export 'scanner/scannerlib.dart' show isUserDefinableOperator,
                                       isUnaryOperator,
                                       isBinaryOperator,
                                       isTernaryOperator,
                                       isMinusOperator;
 export 'universe/universe.dart' show Selector, TypedSelector;
 
 part 'code_buffer.dart';
 part 'compile_time_constants.dart';
 part 'compiler.dart';
+part 'dump_info.dart';
 part 'constants.dart';
 part 'constant_system.dart';
 part 'constant_system_dart.dart';
 part 'diagnostic_listener.dart';
 part 'enqueue.dart';
 part 'library_loader.dart';
 part 'resolved_visitor.dart';
 part 'script.dart';
 part 'tree_validator.dart';
 part 'typechecker.dart';
 part 'warnings.dart';
 part 'world.dart';