Add UnlinkedUnit.isPartOf flag.

pkg/analyzer/lib/src/summary/idl.dart

 // Copyright (c) 2015, 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 file is an "idl" style description of the summary format.  It
  * contains abstract classes which declare the interface for reading data from
  * summaries.  It is parsed and transformed into code that implements the
  * summary format.
  *
@@ skipping 2677 matching lines @@
   @Id(16)
   String get fallbackModePath;
 
   /**
    * Import declarations in the compilation unit.
    */
   @Id(5)
   List<UnlinkedImport> get imports;
 
   /**
+   * Indicates whether the unit is a part-of a library.

[Paul Berry, 2016/10/31 20:20:50]

Nit: let's change this doc comment to something like:

"Indicates whether the unit contains a "part of" declaration.

(Since it's possible, in invalid code, to have a mismatch between "part" and
"part of" declarations, I want to make sure it's absolutely clear that this
boolean is based solely on the contents of the file being analyzed; it does not
depend on whether some other file actually has a "part" declaration that points
to this file).

[scheglov, 2016/10/31 21:01:57]

Done.

+   */
+  @Id(18)
+  bool get isPartOf;
+
+  /**
    * Annotations for the library declaration, or the empty list if there is no
    * library declaration.
    */
   @Id(14)
   List<UnlinkedConst> get libraryAnnotations;
 
   /**
    * Documentation comment for the library, or `null` if there is no
    * documentation comment.
    */
@@ skipping 166 matching lines @@
   @Id(11)
   int get visibleLength;
 
   /**
    * If a local variable, the beginning of the visible range; zero otherwise.
    */
   @informative
   @Id(12)
   int get visibleOffset;
 }