1 files changed, 72 insertions, 0 deletions
diff --git a/Source/WebCore/css/parser/CSSParserObserverWrapper.cpp b/Source/WebCore/css/parser/CSSParserObserverWrapper.cpp
new file mode 100644
index 000000000..65b224853
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+++ b/Source/WebCore/css/parser/CSSParserObserverWrapper.cpp
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+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Copyright (C) 2016 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "config.h"
+#include "CSSParserObserverWrapper.h"
+
+#include "CSSParserTokenRange.h"
+
+namespace WebCore {
+
+unsigned CSSParserObserverWrapper::startOffset(const CSSParserTokenRange& range)
+{
+    return m_tokenOffsets[range.begin() - m_firstParserToken];
+}
+
+unsigned CSSParserObserverWrapper::previousTokenStartOffset(const CSSParserTokenRange& range)
+{
+    if (range.begin() == m_firstParserToken)
+        return 0;
+    return m_tokenOffsets[range.begin() - m_firstParserToken - 1];
+}
+
+unsigned CSSParserObserverWrapper::endOffset(const CSSParserTokenRange& range)
+{
+    return m_tokenOffsets[range.end() - m_firstParserToken];
+}
+
+void CSSParserObserverWrapper::skipCommentsBefore(const CSSParserTokenRange& range, bool leaveDirectlyBefore)
+{
+    unsigned startIndex = range.begin() - m_firstParserToken;
+    if (!leaveDirectlyBefore)
+        startIndex++;
+    while (m_commentIterator < m_commentOffsets.end() && m_commentIterator->tokensBefore < startIndex)
+        m_commentIterator++;
+}
+
+void CSSParserObserverWrapper::yieldCommentsBefore(const CSSParserTokenRange& range)
+{
+    unsigned startIndex = range.begin() - m_firstParserToken;
+    while (m_commentIterator < m_commentOffsets.end() && m_commentIterator->tokensBefore <= startIndex) {
+        m_observer.observeComment(m_commentIterator->startOffset, m_commentIterator->endOffset);
+        m_commentIterator++;
+    }
+}
+
+} // namespace WebCore