New analyzer snapshot.

pkg/analyzer/lib/src/generated/scanner.dart

Index: pkg/analyzer/lib/src/generated/scanner.dart
diff --git a/pkg/analyzer/lib/src/generated/scanner.dart b/pkg/analyzer/lib/src/generated/scanner.dart
index 413cf3b789bd9b1d3da66fd2f9b5ebd8886980d2..88ff4b045dd2d6dd75f9f3912d84f76c6ba8595b 100644
--- a/pkg/analyzer/lib/src/generated/scanner.dart
+++ b/pkg/analyzer/lib/src/generated/scanner.dart
@@ -728,6 +728,11 @@ class Scanner {
   AnalysisErrorListener _errorListener;
 
   /**
+   * The flag specifying if documentation comments should be parsed.
+   */
+  bool _preserveComments = true;
+
+  /**
    * The token pointing to the head of the linked list of tokens.
    */
   Token _tokens;
@@ -806,6 +811,15 @@ class Scanner {
   bool hasUnmatchedGroups() => _hasUnmatchedGroups2;
 
   /**
+   * Set whether documentation tokens should be scanned.
+   *
+   * @param preserveComments `true` if documentation tokens should be scanned
+   */
+  void set preserveComments(bool preserveComments) {
+    this._preserveComments = preserveComments;
+  }
+
+  /**
    * Record that the source begins on the given line and column at the current offset as given by
    * the reader. The line starts for lines before the given line will not be correct.
    *
@@ -1030,6 +1044,9 @@ class Scanner {
   }
 
   void appendCommentToken(TokenType type, String value) {
+    if (!_preserveComments) {
+      return;
+    }
     if (_firstComment == null) {
       _firstComment = new StringToken(type, value, _tokenStart);
       _lastComment = _firstComment;