public IEnumerable <BlockElement> Parse(string text)
{
var content = new List <BlockElement>();
text = text?.Trim();
if (string.IsNullOrWhiteSpace(text))
{
return(content);
}
var textBlocks = SplitBlocks(text);
bool isBold = false;
bool isItalic = false;
foreach ((string blockText, int blockIndentation) in textBlocks)
{
if (string.IsNullOrWhiteSpace(blockText))
{
continue;
}
var block = new BlockElement(blockIndentation);
content.Add(block);
string currentString = blockText;
while (!string.IsNullOrWhiteSpace(currentString))
{
bool isText = ExtractNextElement(ref currentString, out string element);
if (isText)
{
block.AddElement(new TextRun(element, isBold, isItalic));
}
else if (element == _bold)
{
isBold = !isBold;
}
else if (element == _italic)
{
isItalic = !isItalic;
}
else if (ExtractSymbol(element, out string symbol))
{
block.AddElement(new Symbol(symbol));
}
}
}
return(content);
}
private void AddElement(BlockElement element)
{
element.TimeSignature = _timeSignature;
element.Tempo = _piece.Tempo;
if (_midiStrategy.OpenBlocks == 0)
{
_piece.AddElement(element, true);
}
else
{
try
{
BlockElement block = (BlockElement)_piece.Elements[_piece.Elements.Count - 1];
for (int i = 1; i < _midiStrategy.OpenBlocks; i++)
{
block = (BlockElement)block.Elements[block.Elements.Count - 1];
}
block.AddElement(element, true);
}
catch (Exception) { }
}
_midiStrategy.OpenBlocks++;
}