Use declared variables to select the correct configuration for resolution

pkg/analyzer/lib/dart/ast/ast.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 AST model. The AST (Abstract Syntax Tree) model describes the
  * syntactic (as opposed to semantic) structure of Dart code. The semantic
  * structure of the code is modeled by the
  * [element model](../element/element.dart).
  *
@@ skipping 2052 matching lines @@
    * Return the token for the right parenthesis.
    */
   Token get rightParenthesis;
 
   /**
    * Set the token for the right parenthesis to the given [token].
    */
   void set rightParenthesis(Token token);
 
   /**
+   * Return the source to which the [libraryUri] was resolved.
+   */
+  Source get uriSource;
+
+  /**
+   * Set the source to which the [libraryUri] was resolved to the given [source].
+   */
+  void set uriSource(Source source);
+
+  /**
    * Return the value to which the value of the declared variable will be
    * compared, or `null` if the condition does not include an equality test.
    */
   StringLiteral get value;
 
   /**
    * Set the value to which the value of the declared variable will be
    * compared to the given [value].
    */
   void set value(StringLiteral value);
@@ skipping 3838 matching lines @@
    */
   NodeList<Configuration> get configurations;
 
   /**
    * Set the token representing the keyword that introduces this directive
    * ('import', 'export', 'library' or 'part') to the given [token].
    */
   void set keyword(Token token);
 
   /**
+   * Return the source that was selected based on the declared variables. This
+   * will be the source from the first configuration whose condition is true, or
+   * the [uriSource] if either there are no configurations or if there are no
+   * configurations whose condition is true.
+   */
+  Source get selectedSource;
+
+  /**
    * Return the semicolon terminating the directive.
    */
   Token get semicolon;
 
   /**
    * Set the semicolon terminating the directive to the given [token].
    */
   void set semicolon(Token token);
 }
 
@@ skipping 1903 matching lines @@
  *        [ExportDirective]
  *      | [ImportDirective]
  *      | [PartDirective]
  *
  * Clients may not extend, implement or mix-in this class.
  */
 abstract class UriBasedDirective extends Directive {
   /**
    * Return the source to which the URI was resolved.
    */
+  @deprecated
   Source get source;
 
   /**
    * Set the source to which the URI was resolved to the given [source].
    */
+  @deprecated
   void set source(Source source);
 
   /**
    * Return the URI referenced by this directive.
    */
   StringLiteral get uri;
 
   /**
    * Set the URI referenced by this directive to the given [uri].
    */
   void set uri(StringLiteral uri);
 
   /**
-   * Return the content of the URI.
+   * Return the content of the [uri].
    */
   String get uriContent;
 
   /**
-   * Set the content of the URI to the given [content].
+   * Set the content of the [uri] to the given [content].
    */
   void set uriContent(String content);
 
   /**
-   * Return the element associated with the URI of this directive, or `null` if
-   * the AST structure has not been resolved or if the URI could not be
+   * Return the element associated with the [uri] of this directive, or `null`
+   * if the AST structure has not been resolved or if the URI could not be
    * resolved. Examples of the latter case include a directive that contains an
    * invalid URL or a URL that does not exist.
    */
   Element get uriElement;
 
   /**
+   * Return the source to which the [uri] was resolved.
+   */
+  Source get uriSource;
+
+  /**
+   * Set the source to which the [uri] was resolved to the given [source].
+   */
+  void set uriSource(Source source);
+
+  /**
    * Validate this directive, but do not check for existence. Return a code
    * indicating the problem if there is one, or `null` no problem
    */
   UriValidationCode validate();
 }
 
 /**
  * Validation codes returned by [UriBasedDirective.validate].
  *
  * Clients may not extend, implement or mix-in this class.
@@ skipping 340 matching lines @@
   /**
    * Return the 'yield' keyword.
    */
   Token get yieldKeyword;
 
   /**
    * Return the 'yield' keyword to the given [token].
    */
   void set yieldKeyword(Token token);
 }