Restore UriReferencedElement and its uri/uriOffset/uriEnd properties.

pkg/analyzer/lib/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.
 
 /**
  * Defines the element model. The element model describes the semantic (as
  * opposed to syntactic) structure of Dart code. The syntactic structure of the
  * code is modeled by the [AST structure](../ast/ast.dart).
  *
  * The element model consists of two closely related kinds of objects: elements
@@ skipping 394 matching lines @@
    * an entire library or class.
    */
   bool get isStatic;
 }
 
 /**
  * An element representing a compilation unit.
  *
  * Clients may not extend, implement or mix-in this class.
  */
-abstract class CompilationUnitElement implements Element {
+abstract class CompilationUnitElement implements Element, UriReferencedElement {
   /**
    * An empty list of compilation unit elements.
    */
   static const List<CompilationUnitElement> EMPTY_LIST =
       const <CompilationUnitElement>[];
 
   /**
    * Return a list containing all of the top-level accessors (getters and
    * setters) contained in this compilation unit.
    */
@@ skipping 728 matching lines @@
    * synchronous.
    */
   bool get isSynchronous;
 }
 
 /**
  * An export directive within a library.
  *
  * Clients may not extend, implement or mix-in this class.
  */
-abstract class ExportElement implements Element {
+abstract class ExportElement implements Element, UriReferencedElement {
   /**
    * An empty list of export elements.
    */
   static const List<ExportElement> EMPTY_LIST = const <ExportElement>[];
 
   /**
    * Return a list containing the combinators that were specified as part of the
    * export directive in the order in which they were specified.
    */
   List<NamespaceCombinator> get combinators;
@@ skipping 167 matching lines @@
    * importing library even if they are defined in the imported library.
    */
   List<String> get hiddenNames;
 }
 
 /**
  * A single import directive within a library.
  *
  * Clients may not extend, implement or mix-in this class.
  */
-abstract class ImportElement implements Element {
+abstract class ImportElement implements Element, UriReferencedElement {
   /**
    * An empty list of import elements.
    */
   static const List<ImportElement> EMPTY_LIST = const <ImportElement>[];
 
   /**
    * Return a list containing the combinators that were specified as part of the
    * import directive in the order in which they were specified.
    */
   List<NamespaceCombinator> get combinators;
@@ skipping 579 matching lines @@
  * A pseudo-elements that represents names that are undefined. This situation is
  * not allowed by the language, so objects implementing this interface always
  * represent an error. As a result, most of the normal operations on elements do
  * not make sense and will return useless results.
  *
  * Clients may not extend, implement or mix-in this class.
  */
 abstract class UndefinedElement implements Element {}
 
 /**
+ * An element included into a library using some URI.
+ *
+ * Clients may not extend, implement or mix-in this class.
+ */
+abstract class UriReferencedElement implements Element {
+  /**
+   * Return the URI that is used to include this element into the enclosing
+   * library, or `null` if this is the defining compilation unit of a library.
+   */
+  String get uri;
+
+  /**
+   * Return the offset of the character immediately following the last character
+   * of this node's URI, or `-1` for synthetic import.
+   */
+  int get uriEnd;
+
+  /**
+   * Return the offset of the URI in the file, or `-1` if this element is
+   * synthetic.
+   */
+  int get uriOffset;
+}
+
+/**
  * A variable. There are more specific subclasses for more specific kinds of
  * variables.
  *
  * Clients may not extend, implement or mix-in this class.
  */
 abstract class VariableElement implements Element, ConstantEvaluationTarget {
   /**
    * An empty list of variable elements.
    */
   static const List<VariableElement> EMPTY_LIST = const <VariableElement>[];
@@ skipping 80 matching lines @@
   DartType get type;
 
   /**
    * Return a representation of the value of this variable, forcing the value
    * to be computed if it had not previously been computed, or `null` if either
    * this variable was not declared with the 'const' modifier or if the value of
    * this variable could not be computed because of errors.
    */
   DartObject computeConstantValue();
 }