Split scannerlib.dart into several libraries.

pkg/compiler/lib/src/patch_parser.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.
 
 /**
  * This library contains the infrastructure to parse and integrate patch files.
  *
  * Three types of elements can be patched: [LibraryElement], [ClassElement],
  * [FunctionElement]. Patches are introduced in patch libraries which are loaded
  * together with the corresponding origin library. Which libraries that are
@@ skipping 94 matching lines @@
  *   invariants are stated in the field comments.
  * - [tree.TreeElements] only map to patch elements from inside a patch library.
  *   TODO(johnniwinther): Simplify this invariant to use only declarations in
  *   [tree.TreeElements].
  * - Builders shift between declaration and implementation depending on usages.
  * - Compile-time constants use constructor implementation exclusively.
  * - Work on function parameters is performed on the declaration of the function
  *   element.
  */
 
-library patchparser;
+library dart2js.patchparser;
 
 import 'dart:async';
 
 import 'constants/values.dart' show
     ConstantValue;
 import 'compiler.dart' show
     Compiler;
 import 'common/tasks.dart' show
     CompilerTask;
 import 'diagnostics/diagnostic_listener.dart';
 import 'diagnostics/messages.dart' show
     MessageKind;
 import 'elements/elements.dart';
 import 'elements/modelx.dart' show
     BaseFunctionElementX,
     ClassElementX,
     GetterElementX,
     LibraryElementX,
     MetadataAnnotationX,
     SetterElementX;
 import 'library_loader.dart' show
     LibraryLoader;
-import 'scanner/scannerlib.dart';  // Scanner, Parsers, Listeners
+import 'scanner/class_element_parser.dart' show
+    MemberListener,
+    PartialClassElement;
+import 'scanner/listener.dart' show
+    ElementListener,
+    Listener,
+    ParserError;
+import 'scanner/partial_parser.dart' show
+    PartialParser;
+import 'scanner/parser.dart' show
+    Parser;
+import 'scanner/scanner.dart' show
+    Scanner;
+import 'scanner/token.dart' show
+    StringToken,
+    Token;
 import 'script.dart';
 import 'util/util.dart';
 
 class PatchParserTask extends CompilerTask {
   final String name = "Patching Parser";
 
   PatchParserTask(Compiler compiler): super(compiler);
 
   /**
    * Scans a library patch file, applies the method patches and
@@ skipping 425 matching lines @@
 
 class PatchVersion {
   final String tag;
 
   const PatchVersion(this.tag);
 
   bool isActive(String patchTag) => tag == null || tag == patchTag;
 
   String toString() => 'PatchVersion($tag)';
 }