Store parts in Kernel Library, resynthesize parts in Analyzer.

pkg/kernel/lib/binary/ast_from_binary.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.
 library kernel.ast_from_binary;
 
 import 'dart:convert';
 import 'dart:typed_data';
 
 import '../ast.dart';
 import '../transformations/flags.dart';
@@ skipping 369 matching lines @@
     }
 
     debugPath.add(library.name ?? library.importUri?.toString() ?? 'library');
 
     if (shouldWriteData) {
       _fillTreeNodeList(library.annotations, readExpression, library);
     } else {
       _skipNodeList(readExpression);
     }
     _readLibraryDependencies(library);
+    _readLibraryParts(library);
     _mergeNamedNodeList(library.typedefs, readTypedef, library);
     _mergeNamedNodeList(library.classes, readClass, library);
     _mergeNamedNodeList(library.fields, readField, library);
     _mergeNamedNodeList(library.procedures, readProcedure, library);
 
     debugPath.removeLast();
     _currentLibrary = null;
     return library;
   }
 
@@ skipping 19 matching lines @@
   Combinator readCombinator() {
     var isShow = readUInt() == 1;
     var names = readStringReferenceList();
     return new Combinator(isShow, names);
   }
 
   List<Combinator> readCombinatorList() {
     return new List<Combinator>.generate(readUInt(), (i) => readCombinator());
   }
 
+  void _readLibraryParts(Library library) {
+    int length = readUInt();
+    library.parts.length = length;
+    for (int i = 0; i < length; ++i) {
+      var annotations = readExpressionList();
+      var fileUri = readStringOrNullIfEmpty();
+      library.parts[i] = new LibraryPart(annotations, fileUri)
+        ..parent = library;
+    }
+  }
+
   Typedef readTypedef() {
     var canonicalName = readCanonicalNameReference();
     var reference = canonicalName.getReference();
     Typedef node = reference.node;
     bool shouldWriteData = node == null || _isReadingLibraryImplementation;
     if (node == null) {
       node = new Typedef(null, null, reference: reference);
     }
     int fileOffset = readOffset();
     String name = readStringReference();
@@ skipping 820 matching lines @@
       ..fileOffset = offset
       ..fileEqualsOffset = fileEqualsOffset;
   }
 
   int readOffset() {
     // Offset is saved as unsigned,
     // but actually ranges from -1 and up (thus the -1)
     return readUInt() - 1;
   }
 }