void BackgroundHTMLInputStream::rewindTo(HTMLInputCheckpoint checkpointIndex,
const String& unparsedInput) {
ASSERT(checkpointIndex <
m_checkpoints
.size()); // If this ASSERT fires, checkpointIndex is invalid.
const Checkpoint& checkpoint = m_checkpoints[checkpointIndex];
ASSERT(!checkpoint.isNull());
bool isClosed = m_current.isClosed();
m_current = checkpoint.input;
for (size_t i = checkpoint.numberOfSegmentsAlreadyAppended;
i < m_segments.size(); ++i) {
ASSERT(!m_segments[i].isNull());
m_current.append(SegmentedString(m_segments[i]));
}
if (!unparsedInput.isEmpty()) {
m_current.prepend(SegmentedString(unparsedInput),
SegmentedString::PrependType::NewInput);
}
if (isClosed && !m_current.isClosed())
m_current.close();
ASSERT(m_current.isClosed() == isClosed);
m_segments.clear();
m_checkpoints.clear();
m_firstValidCheckpointIndex = 0;
m_firstValidSegmentIndex = 0;
updateTotalCheckpointTokenCount();
}
void BackgroundHTMLInputStream::rewindTo(HTMLInputCheckpoint checkpointIndex, const String& unparsedInput)
{
ASSERT(checkpointIndex < m_checkpoints.size()); // If this ASSERT fires, checkpointIndex is invalid.
const Checkpoint& checkpoint = m_checkpoints[checkpointIndex];
bool isClosed = m_current.isClosed();
m_current = checkpoint.input;
for (size_t i = checkpoint.numberOfSegmentsAlreadyAppended; i < m_segments.size(); ++i)
m_current.append(SegmentedString(m_segments[i]));
if (!unparsedInput.isEmpty())
m_current.prepend(SegmentedString(unparsedInput));
if (isClosed && !m_current.isClosed())
m_current.close();
m_segments.clear();
m_checkpoints.clear();
}
void SegmentedString::push(UChar c) {
ASSERT(c);
// pushIfPossible attempts to rewind the pointer in the SegmentedSubstring,
// however it will fail if the SegmentedSubstring is empty, or
// when we prepended some text while consuming a SegmentedSubstring by
// document.write().
if (m_currentString.pushIfPossible(c)) {
m_currentChar = c;
return;
}
prepend(SegmentedString(String(&c, 1)), PrependType::Unconsume);
}
void BackgroundHTMLInputStream::append(const String& input) {
m_current.append(SegmentedString(input));
m_segments.append(input);
}
