Revert 169289 "A thread-safe Media Query Parser"

trunk/Source/core/css/parser/MediaQueryInputStream.cpp

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "config.h"
-#include "core/css/parser/MediaQueryInputStream.h"
-
-#include "core/html/parser/InputStreamPreprocessor.h"
-
-namespace WebCore {
-
-MediaQueryInputStream::MediaQueryInputStream(String input)
-    : m_offset(0)
-    , m_string(input)
-{
-}
-
-UChar MediaQueryInputStream::peek(unsigned lookaheadOffset)
-{
-    ASSERT((m_offset + lookaheadOffset) <= maxLength());
-    if ((m_offset + lookaheadOffset) >= m_string.length())
-        return kEndOfFileMarker;
-    return m_string[m_offset + lookaheadOffset];
-}
-
-void MediaQueryInputStream::advance(unsigned offset)
-{
-    ASSERT(m_offset + offset <= maxLength());
-    m_offset += offset;
-}
-
-void MediaQueryInputStream::pushBack(UChar cc)
-{
-    --m_offset;
-    ASSERT(currentInputChar() == cc);
-}
-
-unsigned long long MediaQueryInputStream::getUInt(unsigned start, unsigned end)
-{
-    ASSERT(start <= end && ((m_offset + end) <= m_string.length()));
-    bool isResultOK = false;
-    unsigned long long result = 0;
-    if (start < end) {
-        if (m_string.is8Bit())
-            result = charactersToUInt64Strict(m_string.characters8() + m_offset + start, end - start, &isResultOK);
-        else
-            result = charactersToUInt64Strict(m_string.characters16() + m_offset + start, end - start, &isResultOK);
-    }
-    return isResultOK ? result : 0;
-}
-
-double MediaQueryInputStream::getDouble(unsigned start, unsigned end)
-{
-    ASSERT(start <= end && ((m_offset + end) <= m_string.length()));
-    bool isResultOK = false;
-    double result = 0.0;
-    if (start < end) {
-        if (m_string.is8Bit())
-            result = charactersToDouble(m_string.characters8() + m_offset + start, end - start, &isResultOK);
-        else
-            result = charactersToDouble(m_string.characters16() + m_offset + start, end - start, &isResultOK);
-    }
-    return isResultOK ? result : 0.0;
-}
-
-} // namespace WebCore