/// <summary>
/// Assigns the specified state.
/// </summary>
/// <param name="state">The state.</param>
public void Assign(ParserState state)
{
this.Input = state.Input;
this.CurrentPosition = state.CurrentPosition;
this.Nodes.Clear();
foreach (Token node in state.Nodes)
{
this.Nodes.Add(node);
}
}
/// <summary>
/// Indicates if the current parser state matches the rule.
/// </summary>
/// <param name="state">The state.</param>
/// <returns></returns>
public override bool Match(ParserState state)
{
Match match = this.regex.Match(state.Input, state.CurrentPosition);
if (match == null || match.Index != state.CurrentPosition)
{
return false;
}
state.CurrentPosition = state.CurrentPosition + match.Length;
return true;
}
/// <summary>
/// Indicates if the current parser state matches the rule.
/// </summary>
/// <param name="state">The state.</param>
/// <returns></returns>
public override bool Match(ParserState state)
{
Token node = new Token(this.Name, state);
IList<Token> oldNodes = state.Nodes;
state.Nodes = new List<Token>();
if (this.FirstSon.Match(state))
{
node.End = state.CurrentPosition;
node.Tokens = state.Nodes;
oldNodes.Add(node);
state.Nodes = oldNodes;
return true;
}
else
{
state.Nodes = oldNodes;
return false;
}
}
/// <summary>
/// Clones this instance.
/// </summary>
/// <returns></returns>
public ParserState Clone()
{
ParserState result = new ParserState(this.Input);
result.CurrentPosition = this.CurrentPosition;
foreach (Token node in this.Nodes)
{
result.Nodes.Add(node);
}
return result;
}
/// <summary> /// Indicates if the current parser state matches the rule. /// </summary> /// <param name="state">The state.</param> /// <returns></returns> public abstract bool Match(ParserState state);