Roll Observatory deps (charted -> ^0.3.0)

packages/csslib/lib/src/tree.dart

 // Copyright (c) 2012, 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;
 
 /////////////////////////////////////////////////////////////////////////
 // CSS specific types:
 /////////////////////////////////////////////////////////////////////////
 
@@ skipping 26 matching lines @@
 }
 
 class Negation extends TreeNode {
   Negation(SourceSpan span) : super(span);
   Negation clone() => new Negation(span);
   visit(VisitorBase visitor) => visitor.visitNegation(this);
 
   String get name => 'not';
 }
 
+// calc(...)
+// TODO(terry): Hack to handle calc however the expressions should be fully
+//              parsed and in the AST.
+class CalcTerm extends LiteralTerm {
+  final LiteralTerm expr;
+
+  CalcTerm(var value, String t, this.expr, SourceSpan span)
+      : super(value, t, span);
+
+  CalcTerm clone() => new CalcTerm(value, text, expr.clone(), span);
+  visit(VisitorBase visitor) => visitor.visitCalcTerm(this);
+
+  String toString() => "$text($expr)";
+}
+
 // /*  ....   */
 class CssComment extends TreeNode {
   final String comment;
 
   CssComment(this.comment, SourceSpan span) : super(span);
   CssComment clone() => new CssComment(comment, span);
   visit(VisitorBase visitor) => visitor.visitCssComment(this);
 }
 
 // CDO/CDC (Comment Definition Open <!-- and Comment Definition Close -->).
@@ skipping 133 matching lines @@
         return '|=';
       case TokenKind.PREFIX_MATCH:
         return '^=';
       case TokenKind.SUFFIX_MATCH:
         return '\$=';
       case TokenKind.SUBSTRING_MATCH:
         return '*=';
       case TokenKind.NO_MATCH:
         return '';
     }
+    return null;
   }
 
   // Return the TokenKind for operator used by visitAttributeSelector.
   String matchOperatorAsTokenString() {
     switch (_op) {
       case TokenKind.EQUALS:
         return 'EQUALS';
       case TokenKind.INCLUDES:
         return 'INCLUDES';
       case TokenKind.DASH_MATCH:
         return 'DASH_MATCH';
       case TokenKind.PREFIX_MATCH:
         return 'PREFIX_MATCH';
       case TokenKind.SUFFIX_MATCH:
         return 'SUFFIX_MATCH';
       case TokenKind.SUBSTRING_MATCH:
         return 'SUBSTRING_MATCH';
     }
+    return null;
   }
 
   String valueToString() {
     if (_value != null) {
       if (_value is Identifier) {
         return _value.name;
       } else {
         return '"${_value}"';
       }
     } else {
@@ skipping 337 matching lines @@
       case TokenKind.DIRECTIVE_KEYFRAMES:
       case TokenKind.DIRECTIVE_MS_KEYFRAMES:
         return '@keyframes';
       case TokenKind.DIRECTIVE_WEB_KIT_KEYFRAMES:
         return '@-webkit-keyframes';
       case TokenKind.DIRECTIVE_MOZ_KEYFRAMES:
         return '@-moz-keyframes';
       case TokenKind.DIRECTIVE_O_KEYFRAMES:
         return '@-o-keyframes';
     }
+    return null;
   }
 
   KeyFrameDirective clone() {
     var cloneBlocks = [];
     for (var block in _blocks) {
       cloneBlocks.add(block.clone());
     }
     return new KeyFrameDirective(_keyframeName, cloneBlocks, span);
   }
   visit(VisitorBase visitor) => visitor.visitKeyFrameDirective(this);
@@ skipping 84 matching lines @@
       cloneDefinedArgs.add(definedArg.clone());
     }
     return new MixinDefinition(name, cloneDefinedArgs, varArgs, span);
   }
 
   visit(VisitorBase visitor) => visitor.visitMixinDefinition(this);
 }
 
 /** Support a Sass @mixin. See http://sass-lang.com for description. */
 class MixinRulesetDirective extends MixinDefinition {
-  final List<RuleSet> rulesets;
+  final List rulesets;
 
   MixinRulesetDirective(String name, List<VarDefinitionDirective> args,
       bool varArgs, this.rulesets, SourceSpan span)
       : super(name, args, varArgs, span);
 
   MixinRulesetDirective clone() {
     var clonedArgs = [];
     for (var arg in definedArgs) {
       clonedArgs.add(arg.clone());
     }
@@ skipping 726 matching lines @@
 
   PaddingExpression._merge(
       PaddingExpression x, PaddingExpression y, SourceSpan span)
       : super(DartStyleExpression.paddingStyle, span,
           new BoxEdge.merge(x.box, y.box));
 
   PaddingExpression clone() => new PaddingExpression(span,
       top: box.top, right: box.right, bottom: box.bottom, left: box.left);
   visit(VisitorBase visitor) => visitor.visitPaddingExpression(this);
 }