pkg/csslib: types, fixes, cleanup

pkg/csslib/lib/src/tree_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;
 
 // TODO(terry): Enable class for debug only; when conditional imports enabled.
 
 /** Helper function to dump the CSS AST. */
-String treeToDebugString(styleSheet, [bool useSpan = false]) {
+String treeToDebugString(StyleSheet styleSheet, [bool useSpan = false]) {
   var to = new TreeOutput();
   new _TreePrinter(to, useSpan)..visitTree(styleSheet);
   return to.toString();
 }
 
 /** Tree dump for debug output of the CSS AST. */
 class _TreePrinter extends Visitor {
-  var output;
+  final TreeOutput output;
   final bool useSpan;
   _TreePrinter(this.output, this.useSpan) { output.printer = this; }
 
-  void visitTree(tree) => visitStylesheet(tree);
+  void visitTree(StyleSheet tree) => visitStylesheet(tree);
 
   void heading(String heading, node) {
     if (useSpan) {
       output.heading(heading, node.span);
     } else {
       output.heading(heading);
     }
   }
 
   void visitStylesheet(StyleSheet node) {
@@ skipping 26 matching lines @@
   }
 
   void visitMediaExpression(MediaExpression node) {
     heading('MediaExpression', node);
     output.writeValue('feature', node.mediaFeature);
     if (node.andOperator) output.writeValue('AND operator', '');
     visitExpressions(node.exprs);
   }
 
   void visitMediaQueries(MediaQuery query) {
-    output.headeing('MediaQueries');
+    output.heading('MediaQueries');
     output.writeValue('unary', query.unary);
     output.writeValue('media type', query.mediaType);
     output.writeNodeList('media expressions', query.expressions);
   }
 
   void visitMediaDirective(MediaDirective node) {
     heading('MediaDirective', node);
     output.depth++;
     output.writeNodeList('media queries', node.mediaQueries);
     output.writeNodeList('rule sets', node.rulesets);
@@ skipping 24 matching lines @@
   }
 
   void visitContentDirective(ContentDirective node) {
     print("ContentDirective not implemented");
   }
 
   void visitKeyFrameDirective(KeyFrameDirective node) {
     heading('KeyFrameDirective', node);
     output.depth++;
     output.writeValue('keyframe', node.keyFrameName);
-    output.writeValue('name', node._name);
+    output.writeValue('name', node.name);
     output.writeNodeList('blocks', node._blocks);
     output.depth--;
   }
 
   void visitKeyFrameBlock(KeyFrameBlock node) {
     heading('KeyFrameBlock', node);
     output.depth++;
     super.visitKeyFrameBlock(node);
     output.depth--;
   }
@@ skipping 112 matching lines @@
     heading('Selector Group', node);
     output.depth++;
     output.writeNodeList('selectors', node.selectors);
     output.depth--;
   }
 
   void visitSelector(Selector node) {
     heading('Selector', node);
     output.depth++;
     output.writeNodeList('simpleSelectorsSequences',
-        node._simpleSelectorSequences);
+        node.simpleSelectorSequences);
     output.depth--;
   }
 
   void visitSimpleSelectorSequence(SimpleSelectorSequence node) {
     heading('SimpleSelectorSequence', node);
     output.depth++;
     if (node.isCombinatorNone) {
       output.writeValue('combinator', "NONE");
     } else if (node.isCombinatorDescendant) {
       output.writeValue('combinator', "descendant");
@@ skipping 290 matching lines @@
   }
 
   void visitPaddingExpression(PaddingExpression node) {
     heading('Dart Style PaddingExpression', node);
   }
 
   void visitWidthExpression(WidthExpression node) {
     heading('Dart Style WidthExpression', node);
   }
 }