CSSParserTokenRange.cpp [plain text]
#include "config.h"
#include "CSSParserTokenRange.h"
#include "StyleSheetContents.h"
#include <wtf/NeverDestroyed.h>
#include <wtf/text/StringBuilder.h>
namespace WebCore {
CSSParserToken& CSSParserTokenRange::eofToken()
{
static NeverDestroyed<CSSParserToken> eofToken(EOFToken);
return eofToken.get();
}
CSSParserTokenRange CSSParserTokenRange::makeSubRange(const CSSParserToken* first, const CSSParserToken* last) const
{
if (first == &eofToken())
first = m_last;
if (last == &eofToken())
last = m_last;
ASSERT(first <= last);
return CSSParserTokenRange(first, last);
}
CSSParserTokenRange CSSParserTokenRange::consumeBlock()
{
ASSERT(peek().getBlockType() == CSSParserToken::BlockStart);
const CSSParserToken* start = &peek() + 1;
unsigned nestingLevel = 0;
do {
const CSSParserToken& token = consume();
if (token.getBlockType() == CSSParserToken::BlockStart)
nestingLevel++;
else if (token.getBlockType() == CSSParserToken::BlockEnd)
nestingLevel--;
} while (nestingLevel && m_first < m_last);
if (nestingLevel)
return makeSubRange(start, m_first); return makeSubRange(start, m_first - 1);
}
CSSParserTokenRange CSSParserTokenRange::consumeBlockCheckingForEditability(StyleSheetContents* styleSheet)
{
ASSERT(peek().getBlockType() == CSSParserToken::BlockStart);
const auto* start = &peek() + 1;
unsigned nestingLevel = 0;
do {
const auto& token = consume();
if (token.getBlockType() == CSSParserToken::BlockStart)
nestingLevel++;
else if (token.getBlockType() == CSSParserToken::BlockEnd)
nestingLevel--;
if (styleSheet && !styleSheet->usesStyleBasedEditability() && token.type() == IdentToken && equalLettersIgnoringASCIICase(token.value(), "-webkit-user-modify"))
styleSheet->parserSetUsesStyleBasedEditability();
} while (nestingLevel && m_first < m_last);
if (nestingLevel)
return makeSubRange(start, m_first); return makeSubRange(start, m_first - 1);
}
void CSSParserTokenRange::consumeComponentValue()
{
unsigned nestingLevel = 0;
do {
const CSSParserToken& token = consume();
if (token.getBlockType() == CSSParserToken::BlockStart)
nestingLevel++;
else if (token.getBlockType() == CSSParserToken::BlockEnd)
nestingLevel--;
} while (nestingLevel && m_first < m_last);
}
String CSSParserTokenRange::serialize() const
{
StringBuilder builder;
for (const CSSParserToken* it = m_first; it < m_last; ++it)
it->serialize(builder);
return builder.toString();
}
}