void SegmentedString::prepend(const SegmentedSubstring& s)
{
ASSERT(!escaped());
ASSERT(!s.numberOfCharactersConsumed());
if (!s.m_length)
return;
// FIXME: We're assuming that the prepend were originally consumed by
// this SegmentedString. We're also ASSERTing that s is a fresh
// SegmentedSubstring. These assumptions are sufficient for our
// current use, but we might need to handle the more elaborate
// cases in the future.
m_numberOfCharactersConsumedPriorToCurrentString += m_currentString.numberOfCharactersConsumed();
m_numberOfCharactersConsumedPriorToCurrentString -= s.m_length;
if (!m_currentString.m_length) {
m_currentString = s;
updateAdvanceFunctionPointers();
} else {
// Shift our m_currentString into our list.
m_substrings.prepend(m_currentString);
m_currentString = s;
updateAdvanceFunctionPointers();
}
m_empty = false;
}
void SegmentedString::prepend(const SegmentedSubstring& s, PrependType type) {
ASSERT(!s.numberOfCharactersConsumed());
if (!s.length())
return;
// FIXME: We're also ASSERTing that s is a fresh SegmentedSubstring.
// The assumption is sufficient for our current use, but we might
// need to handle the more elaborate cases in the future.
m_numberOfCharactersConsumedPriorToCurrentString +=
m_currentString.numberOfCharactersConsumed();
if (type == PrependType::Unconsume)
m_numberOfCharactersConsumedPriorToCurrentString -= s.length();
if (!m_currentString.length()) {
m_currentString = s;
updateAdvanceFunctionPointers();
} else {
// Shift our m_currentString into our list.
m_substrings.prepend(m_currentString);
m_currentString = s;
updateAdvanceFunctionPointers();
}
m_empty = false;
}
void SegmentedString::append(const SegmentedSubstring& s) {
ASSERT(!m_closed);
if (!s.length())
return;
if (!m_currentString.length()) {
m_numberOfCharactersConsumedPriorToCurrentString +=
m_currentString.numberOfCharactersConsumed();
m_currentString = s;
updateAdvanceFunctionPointers();
} else {
m_substrings.append(s);
}
m_empty = false;
}
