pkg/csslib: types, fixes, cleanup

pkg/csslib/lib/src/css_printer.dart

 // Copyright (c) 2013, 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.
 
 part of csslib.visitor;
 
 /**
  * Visitor that produces a formatted string representation of the CSS tree.
  */
 class CssPrinter extends Visitor {
@@ skipping 119 matching lines @@
       // url(...) isn't needed only a URI can follow an @import directive; emit
       // url as a string.
       emit(' @import "${node.import}"');
     }
     emitMediaQueries(node.mediaQueries);
     emit(';');
   }
 
   void visitKeyFrameDirective(KeyFrameDirective node) {
     emit('$_newLine${node.keyFrameName} ');
-    node._name.visit(this);
+    node.name.visit(this);
     emit('$_sp{$_newLine');
     for (final block in node._blocks) {
       block.visit(this);
     }
     emit('}');
   }
 
   void visitFontFaceDirective(FontFaceDirective node) {
     emit('$_newLine@font-face ');
     emit('$_sp{$_newLine');
@@ skipping 116 matching lines @@
 
   void visitExtendDeclaration(ExtendDeclaration node) {
     emit("@extend ");
     for (var selector in node.selectors) {
       selector.visit(this);
     }
   }
 
 
   void visitSelectorGroup(SelectorGroup node) {
-    var selectors = node._selectors;
+    var selectors = node.selectors;
     var selectorsLength = selectors.length;
     for (var i = 0; i < selectorsLength; i++) {
       if (i > 0) emit(',$_sp');
       selectors[i].visit(this);
     }
   }
 
   void visitSimpleSelectorSequence(SimpleSelectorSequence node) {
     emit('${node._combinatorToString}');
-    node._selector.visit(this);
+    node.simpleSelector.visit(this);
   }
 
   void visitSimpleSelector(SimpleSelector node) {
     emit(node.name);
   }
 
   void visitNamespaceSelector(NamespaceSelector node) {
     emit(node.toString());
   }
 
@@ skipping 210 matching lines @@
 
   void visitWildcard(Wildcard node) {
     emit('*');
   }
 
   void visitDartStyleExpression(DartStyleExpression node) {
     // TODO(terry): TBD
     throw UnimplementedError;
   }
 }