Scanner::IndentMarker* Scanner::PushIndentTo(int column,
IndentMarker::INDENT_TYPE type) {
// are we in flow?
if (InFlowContext()) {
return 0;
}
std::unique_ptr<IndentMarker> pIndent(new IndentMarker(column, type));
IndentMarker& indent = *pIndent;
const IndentMarker& lastIndent = *m_indents.top();
// is this actually an indentation?
if (indent.column < lastIndent.column) {
return 0;
}
if (indent.column == lastIndent.column &&
!(indent.type == IndentMarker::SEQ &&
lastIndent.type == IndentMarker::MAP)) {
return 0;
}
// push a start token
indent.pStartToken = PushToken(GetStartTokenFor(type));
// and then the indent
m_indents.push(&indent);
m_indentRefs.push_back(std::move(pIndent));
return &m_indentRefs.back();
}
// StartStream
// . Set the initial conditions for starting a stream.
void Scanner::StartStream() {
m_startedStream = true;
m_simpleKeyAllowed = true;
std::auto_ptr<IndentMarker> pIndent(new IndentMarker(-1, IndentMarker::NONE));
m_indentRefs.push_back(pIndent);
m_indents.push(&m_indentRefs.back());
}