move csslib into dart svn

pkg/csslib/lib/src/validate.dart

Index: pkg/csslib/lib/src/validate.dart
diff --git a/utils/css/validate.dart b/pkg/csslib/lib/src/validate.dart
similarity index 83%
copy from utils/css/validate.dart
copy to pkg/csslib/lib/src/validate.dart
index 9babe3d3c0911ab077ba6e69e438a30785ed6159..d2301d79d070b1cf5ada0a36fe475d83c5dc883e 100644
--- a/utils/css/validate.dart
+++ b/pkg/csslib/lib/src/validate.dart
@@ -1,7 +1,29 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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.
 
+library csslib.src.validate;
+
+import 'package:csslib/parser.dart';
+import 'package:csslib/visitor.dart';
+import 'package:source_maps/span.dart' show Span;
+
+/** Can be thrown on any Css runtime problem includes source location. */
+class CssSelectorException implements Exception {
+  final String _message;
+  final Span _span;
+
+  CssSelectorException(this._message, [this._span]);
+
+  String toString() {
+    var msg = _span == null ? _message : _span.getLocationMessage(_message);
+    return 'CssSelectorException: $msg';
+  }
+}
+
+List<String> classes = [];
+List<String> ids = [];
+
 class Validate {
   static int _classNameCheck(var selector, int matches) {
     if (selector.isCombinatorDescendant() ||
@@ -9,10 +31,10 @@ class Validate {
       if (matches < 0) {
         String tooMany = selector.simpleSelector.toString();
         throw new CssSelectorException(
-            'Can not mix Id selector with class selector(s). Id ' +
+            'Can not mix Id selector with class selector(s). Id '
             'selector must be singleton too many starting at $tooMany');
       }
-  
+
       return matches + 1;
     } else {
       String error = selector.toString();
@@ -38,7 +60,7 @@ class Validate {
 
   // Validate the @{css expression} only .class and #elementId are valid inside
   // of @{...}.
-  static template(List<ASTNode> selectors, CssWorld cssWorld) {
+  static template(List<Selector> selectors) {
     var errorSelector;                  // signal which selector didn't match.
     bool found = false;                 // signal if a selector is matched.
     int matches = 0;                    // < 0 IdSelectors, > 0 ClassSelector
@@ -56,13 +78,13 @@ class Validate {
           if (!simpleSelector.name.startsWith('_')) {
             // TODO(terry): For now iterate through all classes look for faster
             //              mechanism hash map, etc.
-            for (final className in cssWorld.classes) {
+            for (final className in classes) {
               if (selector.simpleSelector.name == className) {
                 matches = _classNameCheck(selector, matches);
                 found = true;              // .class found.
                 break;
               }
-              for (final className2 in cssWorld.classes) {
+              for (final className2 in classes) {
                 print(className2);
               }
             }
@@ -78,7 +100,7 @@ class Validate {
           // Any element id starting with an underscore is a private element id
           // that doesn't have to match the world of known elemtn ids.
           if (!simpleSelector.name.startsWith('_')) {
-            for (final id in cssWorld.ids) {
+            for (final id in ids) {
               if (simpleSelector.name == id) {
                 matches = _elementIdCheck(selector, matches);
                 found = true;             // #id found.
@@ -105,7 +127,7 @@ class Validate {
     }
 
     // Every selector must match.
-    var selector = selectors[0];
+    Selector selector = selectors[0];
     assert((matches >= 0 ? matches : -matches) ==
         selector.simpleSelectorSequences.length);
   }