1// Copyright 2015 The Chromium Authors. All rights reserved.
2// Copyright (C) 2016 Apple Inc. All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
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7//
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9// notice, this list of conditions and the following disclaimer.
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12// in the documentation and/or other materials provided with the
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17//
18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30#include "config.h"
31#include "CSSVariableData.h"
32
33#include "CSSCustomPropertyValue.h"
34#include "CSSParserTokenRange.h"
35#include "CSSValuePool.h"
36#include "RenderStyle.h"
37#include <wtf/text/AtomicStringHash.h>
38#include <wtf/text/StringBuilder.h>
39#include <wtf/text/StringView.h>
40
41namespace WebCore {
42
43template<typename CharacterType> void CSSVariableData::updateTokens(const CSSParserTokenRange& range)
44{
45 const CharacterType* currentOffset = m_backingString.characters<CharacterType>();
46 for (const CSSParserToken& token : range) {
47 if (token.hasStringBacking()) {
48 unsigned length = token.value().length();
49 StringView string(currentOffset, length);
50 m_tokens.append(token.copyWithUpdatedString(string));
51 currentOffset += length;
52 } else
53 m_tokens.append(token);
54 }
55 ASSERT(currentOffset == m_backingString.characters<CharacterType>() + m_backingString.length());
56}
57
58bool CSSVariableData::operator==(const CSSVariableData& other) const
59{
60 return tokens() == other.tokens();
61}
62
63CSSVariableData::CSSVariableData(const CSSParserTokenRange& range)
64{
65 StringBuilder stringBuilder;
66 CSSParserTokenRange localRange = range;
67
68 while (!localRange.atEnd()) {
69 CSSParserToken token = localRange.consume();
70 if (token.hasStringBacking())
71 stringBuilder.append(token.value());
72 }
73 m_backingString = stringBuilder.toString();
74 if (m_backingString.is8Bit())
75 updateTokens<LChar>(range);
76 else
77 updateTokens<UChar>(range);
78}
79
80} // namespace WebCore
81