Distinguish SimpleIdentifier uses and declarations at parse time.

pkg/analyzer/lib/src/dart/ast/utilities.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.ast.utilities;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 760 matching lines @@
           SimpleFormalParameter node) =>
       new SimpleFormalParameter(
           cloneNode(node.documentationComment),
           cloneNodeList(node.metadata),
           cloneToken(node.keyword),
           cloneNode(node.type),
           cloneNode(node.identifier));
 
   @override
   SimpleIdentifier visitSimpleIdentifier(SimpleIdentifier node) =>
-      new SimpleIdentifier(cloneToken(node.token));
+      new SimpleIdentifier(cloneToken(node.token),
+          isDeclaration: node.inDeclarationContext());
 
   @override
   SimpleStringLiteral visitSimpleStringLiteral(SimpleStringLiteral node) =>
       new SimpleStringLiteral(cloneToken(node.literal), node.value);
 
   @override
   StringInterpolation visitStringInterpolation(StringInterpolation node) =>
       new StringInterpolation(cloneNodeList(node.elements));
 
   @override
@@ skipping 2634 matching lines @@
   SimpleIdentifier visitSimpleIdentifier(SimpleIdentifier node) {
     Token mappedToken = _mapToken(node.token);
     if (mappedToken == null) {
       // This only happens for SimpleIdentifiers created by the parser as part
       // of scanning documentation comments (the tokens for those identifiers
       // are not in the original token stream and hence do not get copied).
       // This extra check can be removed if the scanner is changed to scan
       // documentation comments for the parser.
       mappedToken = node.token;
     }
-    SimpleIdentifier copy = new SimpleIdentifier(mappedToken);
+    SimpleIdentifier copy = new SimpleIdentifier(mappedToken,
+        isDeclaration: node.inDeclarationContext());
     copy.auxiliaryElements = node.auxiliaryElements;
     copy.propagatedElement = node.propagatedElement;
     copy.propagatedType = node.propagatedType;
     copy.staticElement = node.staticElement;
     copy.staticType = node.staticType;
     return copy;
   }
 
   @override
   SimpleStringLiteral visitSimpleStringLiteral(SimpleStringLiteral node) {
@@ skipping 4336 matching lines @@
    * Safely visit the given [token], printing the [suffix] after the token if it
    * is non-`null`.
    */
   void _visitTokenWithSuffix(Token token, String suffix) {
     if (token != null) {
       _writer.print(token.lexeme);
       _writer.print(suffix);
     }
   }
 }