Remove all attribute selectors that are not Set or Exact.

sky/engine/core/css/CSSSelector.cpp

 /*
  * Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
  *               1999 Waldo Bastian (bastian@kde.org)
  *               2001 Andreas Schlapbach (schlpbch@iam.unibe.ch)
  *               2001-2003 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2002, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 248 matching lines @@
             }
             default:
                 break;
             }
         } else if (cs->m_match == CSSSelector::PseudoElement) {
             str.appendLiteral("::");
             str.append(cs->value());
         } else if (cs->isAttributeSelector()) {
             str.append('[');
             str.append(cs->attribute().localName());
-            switch (cs->m_match) {
-                case CSSSelector::Exact:
-                    str.append('=');
-                    break;
-                case CSSSelector::Set:
-                    // set has no operator or value, just the attrName
-                    str.append(']');
-                    break;
-                case CSSSelector::List:
-                    str.appendLiteral("~=");
-                    break;
-                case CSSSelector::Hyphen:
-                    str.appendLiteral("|=");
-                    break;
-                case CSSSelector::Begin:
-                    str.appendLiteral("^=");
-                    break;
-                case CSSSelector::End:
-                    str.appendLiteral("$=");
-                    break;
-                case CSSSelector::Contain:
-                    str.appendLiteral("*=");
-                    break;
-                default:
-                    break;
-            }
+            if (cs->m_match == CSSSelector::Exact)
+                str.append('=');
             if (cs->m_match != CSSSelector::Set) {
                 serializeString(cs->value(), str);
                 if (cs->attributeMatchType() == CaseInsensitive)
                     str.appendLiteral(" i");
-                str.append(']');
             }
+            str.append(']');
         }
         if (!cs->tagHistory())
             break;
         cs = cs->tagHistory();
     }
 
     return str.toString() + rightSide;
 }
 
 void CSSSelector::setAttribute(const QualifiedName& value, AttributeMatchType matchType)
@@ skipping 16 matching lines @@
 }
 
 static bool validateSubSelector(const CSSSelector* selector)
 {
     switch (selector->match()) {
     case CSSSelector::Tag:
     case CSSSelector::Id:
     case CSSSelector::Class:
     case CSSSelector::Exact:
     case CSSSelector::Set:
-    case CSSSelector::List:
-    case CSSSelector::Hyphen:
-    case CSSSelector::Contain:
-    case CSSSelector::Begin:
-    case CSSSelector::End:
         return true;
     case CSSSelector::PseudoElement:
     case CSSSelector::Unknown:
         return false;
     case CSSSelector::PseudoClass:
         break;
     }
 
     switch (selector->pseudoType()) {
     case CSSSelector::PseudoHost:
@@ skipping 28 matching lines @@
     , m_attribute(anyName)
     , m_argument(nullAtom)
 {
 }
 
 CSSSelector::RareData::~RareData()
 {
 }
 
 } // namespace blink