public SgfProperty this[string identifier] {
get { return(Properties.First(x => x.Identifier == identifier)); }
set {
SgfProperty property = Properties.FirstOrDefault(x => x.Identifier == identifier);
if (property != null)
{
Properties.Remove(property);
}
Properties.Add(value);
}
}
/// <summary>
/// Returns a string which represents the object.
/// </summary>
public override string ToString()
{
return(this.Identifier + "[" + string.Join("][", this.Values.Select(x => SgfProperty.Escape(x))) + "]");
}
/// <summary>
/// Returns the corresponding game tree of a certain range in the given token list.
/// </summary>
/// <param name="tokens">The token list.</param>
/// <param name="start">The start index.</param>
/// <param name="end">The end index.</param>
public static GameTree Parse(List <Tuple <TokenType, string> > tokens, int start = 0, int end = int.MaxValue)
{
int i = start;
end = Math.Min(end, tokens.Count - 1);
GameTree tree = new GameTree();
Node node = new Node();
SgfProperty property = new SgfProperty("", "");
while (i <= end)
{
Tuple <TokenType, string> token = tokens[i];
if (token.Item1 == TokenType.Semicolon)
{
node = new Node();
tree.Elements.Add(node);
}
else if (token.Item1 == TokenType.PropIdent)
{
property = new SgfProperty(token.Item2, new List <string>());
node.Properties.Add(property);
}
else if (token.Item1 == TokenType.CValueType)
{
property.Values.Add(token.Item2);
}
else if (token.Item1 == TokenType.Parenthesis && token.Item2 == "(")
{
break;
}
else if (token.Item1 == TokenType.Parenthesis)
{
throw new ParseException("Unexpected parenthesis.");
}
i++;
}
int depth = 0;
int newstart = 0;
while (i <= end)
{
Tuple <TokenType, string> token = tokens[i];
if (token.Item1 == TokenType.Parenthesis && token.Item2 == "(")
{
depth++;
if (depth == 1)
{
newstart = i + 1;
}
}
else if (token.Item1 == TokenType.Parenthesis && token.Item2 == ")")
{
depth--;
if (depth == 0)
{
tree.SubTrees.Add(Parse(tokens, newstart, i - 1));
}
}
i++;
}
return(tree);
}