/// <summary>
/// Parse all portions of a multi block
/// </summary>
private void PBComma(Block Item)
{
ParseNextPortion:
//We are already a multi, parse all next portions
if (Item.Type == Block.eType.Multi)
{
while (true)
{
//Parse the implicit multi block
Block bl = new Block();
bl.Parent = Item;
ParseBlock(bl, true);
//Don't add a block with 1 item
if (bl.Elements.Count == 1)
{
var el = bl.Elements[0];
bl.Elements.Clear();
//Update the parent if it is a block
Block bl2 = el as Block;
if (bl2 != null)
bl2.Parent = Item;
//Add the item
Item.Elements.Add(el);
}
else
//Add the block
Item.Elements.Add(bl);
//Got another portion?
if (!_caret.WS().Match(@",")) break;
}
//Update last element's annotation
if (Item.Elements.Count > 0)
{
var el = Item.Elements[Item.Elements.Count - 1];
if (el != null)
Item.Annotation.SourcePosition.End = el.Annotation.SourcePosition.End;
}
}
//We now become a multi - prepare first portion
else
{
//We can't allow empty portions
if (Item.Elements.Count == 0)
Item.Elements.Add(null);
else if (Item.Elements.Count > 1)
{
//Create a new block
Block bl = new Block();
bl.TransferFrom(Item);
bl.Parent = Item;
//bl.TextPosition.Start = bl.Elements[0].TextPosition.Start;
bl.Annotation.SourcePosition.End = bl.Elements[bl.Elements.Count - 1].Annotation.SourcePosition.End;
//Add the block
Item.Elements.Add(bl);
}
Item.Type = Block.eType.Multi;
//Parse next portion
goto ParseNextPortion;
//return PBComma(Item);
//Is this more elegant than a goto? Dunno, but
//C# doesn't allow non-parent-block jumps, and
//this provides the exact same functionality
}
}