Add fileEndOffset to Class.

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 567 matching lines @@
   Body,
 }
 
 /// Declaration of a regular class or a mixin application.
 ///
 /// Mixin applications may not contain fields or procedures, as they implicitly
 /// use those from its mixed-in type.  However, the IR does not enforce this
 /// rule directly, as doing so can obstruct transformations.  It is possible to
 /// transform a mixin application to become a regular class, and vice versa.
 class Class extends NamedNode {
+  /// End offset in the source file it comes from. Valid values are from 0 and
+  /// up, or -1 ([TreeNode.noOffset]) if the file end offset is not available
+  /// (this is the default if none is specifically set).
+  int fileEndOffset = TreeNode.noOffset;
+
   /// Offset of the declaration, set and used when writing the binary.
   int binaryOffset = -1;
 
   /// The degree to which the contents of the class have been loaded.
   ClassLevel level = ClassLevel.Body;
 
   /// List of metadata annotations on the class.
   ///
   /// This defaults to an immutable empty list. Use [addAnnotation] to add
   /// annotations if needed.
@@ skipping 4024 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;
 }