Fix summary handling of unresolved imports, exports, and parts.

pkg/analyzer/lib/src/dart/element/element.dart

 // Copyright (c) 2014, 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 analyzer.src.dart.element.element;
 
 import 'dart:collection';
 import 'dart:math' show min;
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 4139 matching lines @@
     return super.uriEnd;
   }
 
   @override
   void set uriEnd(int uriEnd) {
     assert(_unlinkedExportNonPublic == null);
     super.uriEnd = uriEnd;
   }
 
   @override
-  bool get uriExists {
-    if (_unlinkedExportNonPublic != null) {
-      return true;
-    }
-    return hasModifier(Modifier.URI_EXISTS);
-  }
-
-  /**
-   * Set whether the file referenced by the import's URI exists to match the
-   * given flag.
-   */
-  void set uriExists(bool exists) {
-    assert(_unlinkedExportNonPublic == null);
-    setModifier(Modifier.URI_EXISTS, exists);
-  }
-
-  @override
   int get uriOffset {
     if (_unlinkedExportNonPublic != null) {
       return _unlinkedExportNonPublic.uriOffset;
     }
     return super.uriOffset;
   }
 
   @override
   void set uriOffset(int uriOffset) {
     assert(_unlinkedExportNonPublic == null);
@@ skipping 923 matching lines @@
     return super.uriEnd;
   }
 
   @override
   void set uriEnd(int uriEnd) {
     assert(_unlinkedImport == null);
     super.uriEnd = uriEnd;
   }
 
   @override
-  bool get uriExists {
-    if (_unlinkedImport != null) {
-      return true;
-    }
-    return hasModifier(Modifier.URI_EXISTS);
-  }
-
-  /**
-   * Set whether the file referenced by the import's URI exists to match the
-   * given flag.
-   */
-  void set uriExists(bool exists) {
-    assert(_unlinkedImport == null);
-    setModifier(Modifier.URI_EXISTS, exists);
-  }
-
-  @override
   int get uriOffset {
     if (_unlinkedImport != null) {
       if (_unlinkedImport.isImplicit) {
         return -1;
       }
       return _unlinkedImport.uriOffset;
     }
     return super.uriOffset;
   }
 
@@ skipping 1279 matching lines @@
   static const Modifier STATIC = const Modifier('STATIC', 15);
 
   /**
    * Indicates that the element does not appear in the source code but was
    * implicitly created. For example, if a class does not define any
    * constructors, an implicit zero-argument constructor will be created and it
    * will be marked as being synthetic.
    */
   static const Modifier SYNTHETIC = const Modifier('SYNTHETIC', 16);
 
-  /**
-   * A flag used for import and export elements that indicates whether the URI
-   * in the corresponding directive referenced a file that exists.
-   */
-  static const Modifier URI_EXISTS = const Modifier('URI_EXISTS', 17);
-
   static const List<Modifier> values = const [
     ABSTRACT,
     ASYNCHRONOUS,
     CONST,
     DEFERRED,
     ENUM,
     EXTERNAL,
     FACTORY,
     FINAL,
     GENERATOR,
     GETTER,
     HAS_EXT_URI,
     IMPLICIT_TYPE,
     MIXIN_APPLICATION,
     REFERENCES_SUPER,
     SETTER,
     STATIC,
-    SYNTHETIC,
-    URI_EXISTS
+    SYNTHETIC
   ];
 
   const Modifier(String name, int ordinal) : super(name, ordinal);
 }
 
 /**
  * A concrete implementation of a [MultiplyDefinedElement].
  */
 class MultiplyDefinedElementImpl implements MultiplyDefinedElement {
   /**
@@ skipping 2049 matching lines @@
 
   @override
   void visitElement(Element element) {
     int offset = element.nameOffset;
     if (offset != -1) {
       map[offset] = element;
     }
     super.visitElement(element);
   }
 }