[kernel] Delete most of the AST

pkg/kernel/lib/ast.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.
 
 /// -----------------------------------------------------------------------
 ///                           ERROR HANDLING
 /// -----------------------------------------------------------------------
 ///
 /// As a rule of thumb, errors that can be detected statically are handled by
 /// the frontend, typically by translating the erroneous code into a 'throw' or
@@ skipping 224 matching lines @@
     }
     return node as Typedef;
   }
 }
 
 // ------------------------------------------------------------------------
 //                      LIBRARIES and CLASSES
 // ------------------------------------------------------------------------
 
 class Library extends NamedNode implements Comparable<Library> {
+  /// Offset of the declaration, set and used when writing the binary.
+  int binaryOffset = -1;
+
   /// An import path to this library.
   ///
   /// The [Uri] should have the `dart`, `package`, `app`, or `file` scheme.
   ///
   /// If the URI has the `app` scheme, it is relative to the application root.
   Uri importUri;
 
   /// The uri of the source file this library was loaded from.
   String fileUri;
 
@@ skipping 4364 matching lines @@
 /// typedef has not been assigned a canonical name yet.
 ///
 /// Returns `null` if the typedef is `null`.
 CanonicalName getCanonicalNameOfTypedef(Typedef typedef_) {
   if (typedef_ == null) return null;
   if (typedef_.canonicalName == null) {
     throw '$typedef_ has no canonical name';
   }
   return typedef_.canonicalName;
 }