1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
6 #include "core/css/parser/MediaQueryInputStream.h"
8 #include "core/html/parser/InputStreamPreprocessor.h"
12 MediaQueryInputStream::MediaQueryInputStream(String input)
18 UChar MediaQueryInputStream::peek(unsigned lookaheadOffset)
20 ASSERT((m_offset + lookaheadOffset) <= maxLength());
21 if ((m_offset + lookaheadOffset) >= m_string.length())
22 return kEndOfFileMarker;
23 return m_string[m_offset + lookaheadOffset];
26 void MediaQueryInputStream::advance(unsigned offset)
28 ASSERT(m_offset + offset <= maxLength());
32 void MediaQueryInputStream::pushBack(UChar cc)
35 ASSERT(nextInputChar() == cc);
38 unsigned long long MediaQueryInputStream::getUInt(unsigned start, unsigned end)
40 ASSERT(start <= end && ((m_offset + end) <= m_string.length()));
41 bool isResultOK = false;
42 unsigned long long result = 0;
44 if (m_string.is8Bit())
45 result = charactersToUInt64Strict(m_string.characters8() + m_offset + start, end - start, &isResultOK);
47 result = charactersToUInt64Strict(m_string.characters16() + m_offset + start, end - start, &isResultOK);
49 return isResultOK ? result : 0;
52 double MediaQueryInputStream::getDouble(unsigned start, unsigned end)
54 ASSERT(start <= end && ((m_offset + end) <= m_string.length()));
55 bool isResultOK = false;
58 if (m_string.is8Bit())
59 result = charactersToDouble(m_string.characters8() + m_offset + start, end - start, &isResultOK);
61 result = charactersToDouble(m_string.characters16() + m_offset + start, end - start, &isResultOK);
63 return isResultOK ? result : 0.0;