private void _addButton_Click(object sender, EventArgs e)
{
var expression = new AssignmentExpression(new VariableExpression("?"), new LiteralExpression("[[?]]?"));
var oldIndex = SelectedLineIndex;
var head = _root.Children.Take(oldIndex + 1);
var @new = new ExpressionStatement(expression);
var tail = _root.Children.Skip(oldIndex + 1);
var newchi = head.Concat(@new.AsArray()).Concat(tail).Cast<Statement>();
_root = (Block)_root.ReplaceMeWith(() => new Block(newchi));
RebuildTopPanelContent();
SelectedLineIndex = oldIndex + 1;
}
private IEnumerable<ElfVmInstruction> CompileAssignment(AssignmentExpression ae)
{
foreach(var evi in Compile(ae.Expression))
yield return evi;
yield return new Dup();
yield return new PopRef(ae.Target.Name);
}