/// <summary>
/// Specific rule implementation of the match. Which is if one or more children matches.
/// </summary>
/// <param name="state">The state.</param>
/// <returns><c>true</c> if input is matched, <c>false</c> otherwise.</returns>
protected internal override bool MatchImpl(ParserState state)
{
while (FirstLeaf.MatchImpl(state))
{
}
return(true);
}
/// <summary>
/// Specific rule implementation of the match.
/// </summary>
/// <param name="state">The state.</param>
/// <returns><c>true</c> if input is matched, <c>false</c> otherwise.</returns>
protected internal override bool MatchImpl(ParserState state)
{
if (!Leafs.Any())
{
Leafs.Add(RuleFunc());
}
return(FirstLeaf.MatchImpl(state));
}
private T GetValue(ValueNode <T> valueNode)
{
var value = FirstLeaf.FirstValue <T>(valueNode.Text);
if ((Comparer.Compare(Minimum, value) > 0) || (Comparer.Compare(Maximum, value) < 0))
{
throw new EvaluatorException($"The value doesn't meet the expected range. Minimum '{Minimum}'. Maximum '{Maximum}'. Actual '{value}'.");
}
return(value);
}
/// <summary>
/// Specific rule implementation of the match. Which inverses the given rule.
/// </summary>
/// <param name="state">The state.</param>
/// <returns><c>true</c> if input is matched, <c>false</c> otherwise.</returns>
protected internal override bool MatchImpl(ParserState state)
{
var oldState = state.Clone();
if (!FirstLeaf.MatchImpl(state))
{
return(true);
}
state.Assign(oldState);
return(false);
}
/// <summary>
/// Specific rule implementation of the match. Which caches the result.
/// </summary>
/// <param name="state">The state.</param>
/// <returns><c>true</c> if input is matched, <c>false</c> otherwise.</returns>
protected internal override bool MatchImpl(ParserState state)
{
var node = CreateNode(Name, state.Input, state.Position, this);
var oldChilds = state.Nodes;
state.Nodes = new List <Node>();
if (!FirstLeaf.MatchImpl(state))
{
state.Nodes = oldChilds;
return(false);
}
node.End = state.Position;
node.Leafs = state.Nodes;
oldChilds.Add(node);
state.Nodes = oldChilds;
return(true);
}