private void WriteGameTree(GameTree gameTree, StreamWriter writer, bool escape)
{
writer.Write(escape ? "\n(" : "(");
this.WriteSequence(gameTree.Sequence, writer);
gameTree.Children.ForEach(t => this.WriteGameTree(t, writer, true));
writer.Write(")");
}
private Collection ParseCollection(Lexer lexer)
{
Collection result;
List <GameTree> trees = new List <GameTree>();
GameTree tree = ParseGameTree(lexer);
while (tree != null)
{
trees.Add(tree);
tree = ParseGameTree(lexer);
}
if (trees.Count == 0)
{
result = null;
}
else
{
result = new Collection(trees);
}
return(result);
}
private GameTree ParseGameTree(Lexer lexer)
{
GameTree result = null;
if (lexer.Peek().Type == LexemeType.OpeningBracket)
{
lexer.Read();
Sequence sequence = ParseSequence(lexer);
if (sequence == null)
{
throw new ArgumentException("Sequence expected");
}
else
{
List <GameTree> trees = new List <GameTree>();
GameTree tree = ParseGameTree(lexer);
while (tree != null)
{
trees.Add(tree);
tree = ParseGameTree(lexer);
}
result = new GameTree(sequence, trees);
}
if (lexer.Read().Type != LexemeType.ClosingBracket)
{
throw new ArgumentException("Closing bracket expected");
}
return(result);
}
return(result);
}
