public AstNode(
AstNodeType type, Token token)
{
this.type = type;
this.token = token;
this.children = null;
}
//@begin(ctor)
public AstNode(
AstNodeType type, IEnumerable<AstNode> children)
{
this.type = type;
this.token = null;
this.children = new List<AstNode>();
this.children.AddRange(children);
}
public TokenStream(IEnumerable<Token> enumerable)
{
this.enumerator = enumerable.GetEnumerator();
Next();
if (hasMoreTokens)
{
current = this.enumerator.Current;
}
}
public void Next()
{
if (hasMoreTokens)
{
hasMoreTokens = this.enumerator.MoveNext();
if (hasMoreTokens)
{
current = this.enumerator.Current;
}
else
{
current = null;
}
}
else
{
throw new InvalidOperationException("Read past end of stream.");
}
}