private IEnumerable <TagSegment> GetAllTags(TextTagsState state)
{
var nextStates = new Stack <TextTagsState>();
for (var index = 0; index < state.Text.Length; index++)
{
var tag = finder.GetFirstTagOnSegment(state);
if (tag == null)
{
if (nextStates.Count == 0)
{
break;
}
index = nextStates.Peek().Start - 1;
state = nextStates.Pop();
continue;
}
yield return(tag);
var newStart = tag.CloseIndex + Tags.GetMd(tag.TagName).Length;
if (newStart < state.End)
{
nextStates.Push(state.ChangeSegment(newStart, state.End));
}
index = tag.OpenIndex + Tags.GetMd(tag.TagName).Length;
if (index <= state.End - 1)
{
state = state.SwitchTag(tag.TagName).ChangeSegment(index, tag.CloseIndex - 1);
}
index -= 1;
}
}
public void SwitchTag_InverseBitInMask()
{
var expectedState = !textTagsState.IsInTag(TagName.Em);
textTagsState = textTagsState.SwitchTag(TagName.Em);
textTagsState.IsInTag(TagName.Em).Should().Be(expectedState);
}
