public virtual void Visit(IPgnSymbol node)
{
if (node != null)
{
node.Accept(this);
}
}
/// <summary>
/// Gets if this syntax is a terminal symbol, i.e. if it has no child nodes and its <see cref="Length"/> is greater than zero.
/// </summary>
/// <param name="pgnTerminalSymbol">
/// The terminal symbol if this syntax is a terminal symbol, otherwise a default value.
/// </param>
/// <returns>
/// Whether or not this syntax is a terminal symbol, i.e. if it has no child nodes and its <see cref="Length"/> is greater than zero.
/// </returns>
public bool IsTerminalSymbol(out IPgnSymbol pgnTerminalSymbol)
{
if (ChildCount == 0 && Length > 0)
{
// Contract is that all subclasses with ChildCount == 0 and Length > 0 must implement IPgnSymbol.
pgnTerminalSymbol = (IPgnSymbol)this;
return(true);
}
pgnTerminalSymbol = default;
return(false);
}
/// <summary> /// Converts this <see cref="IPgnSymbol"/> to a <see cref="PgnSyntax"/> node. /// </summary> /// <param name="pgnSymbol"> /// The <see cref="IPgnSymbol"/> to convert. /// </param> /// <returns> /// The converted <see cref="PgnSyntax"/> node. /// </returns> public static PgnSyntax ToSyntax(this IPgnSymbol pgnSymbol) => pgnSymbol.Accept(ToPgnSyntaxConverter.Instance);
public virtual void DefaultVisit(IPgnSymbol node)
{
}
public override Style DefaultVisit(IPgnSymbol node, PgnEditor pgnEditor) => pgnEditor.DefaultStyle;
