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| 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. |
| 4 |
| 5 #ifndef MediaQueryInputStream_h |
| 6 #define MediaQueryInputStream_h |
| 7 |
| 8 #include "wtf/text/WTFString.h" |
| 9 |
| 10 namespace WebCore { |
| 11 |
| 12 class MediaQueryInputStream { |
| 13 WTF_MAKE_NONCOPYABLE(MediaQueryInputStream); |
| 14 WTF_MAKE_FAST_ALLOCATED; |
| 15 public: |
| 16 MediaQueryInputStream(String input); |
| 17 |
| 18 UChar peek(unsigned); |
| 19 inline UChar currentInputChar() |
| 20 { |
| 21 return peek(0); |
| 22 } |
| 23 |
| 24 void advance(unsigned = 1); |
| 25 void pushBack(UChar); |
| 26 |
| 27 inline size_t maxLength() |
| 28 { |
| 29 return m_string.length() + 1; |
| 30 } |
| 31 |
| 32 inline size_t leftChars() |
| 33 { |
| 34 return m_string.length() - m_offset; |
| 35 |
| 36 } |
| 37 |
| 38 unsigned long long getUInt(unsigned start, unsigned end); |
| 39 double getDouble(unsigned start, unsigned end); |
| 40 |
| 41 template<bool characterPredicate(UChar)> |
| 42 unsigned skipWhilePredicate(unsigned offset) |
| 43 { |
| 44 while ((m_offset + offset) < m_string.length() && characterPredicate(m_s
tring[m_offset + offset])) |
| 45 ++offset; |
| 46 return offset; |
| 47 } |
| 48 |
| 49 private: |
| 50 size_t m_offset; |
| 51 String m_string; |
| 52 }; |
| 53 |
| 54 } // namespace WebCore |
| 55 |
| 56 #endif // MediaQueryInputStream_h |
| 57 |
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