protected ParseRequest<TState> adjustParseSpan(OffsetRegion span) {
int start = span.getStart();
int end = span.getEnd();
if (firstDirtyLine != null) {
int firstDirtyLineOffset =
snapshot.findLineFromLineNumber(firstDirtyLine).getStart().getOffset();
start = Math.min(start, firstDirtyLineOffset);
}
TState state = null;
int startLine = snapshot.findLineNumber(start);
while (startLine > 0) {
TState lineState = lineStates.get(startLine - 1);
if (!lineState.getIsMultiLineToken()) {
state = lineState;
break;
}
startLine--;
}
if (startLine == 0) {
state = getStartState();
}
start = snapshot.findLineFromLineNumber(startLine).getStart().getOffset();
int length = end - start;
ParseRequest<TState> request = new ParseRequest<>(new OffsetRegion(start, length), state);
return request;
}
