public override ConstraintViolation VisitVariableNode(VariableNode varNode)
{
var value = varNode.Variable.Value;
if (!this.variables.Any(v => this.comparison.Equals(value, v)))
{
return new ConstraintViolation(varNode, "The variable name '" + value + "' is not allowed.");
}
return null;
}
public override ConstraintViolation VisitVariableNode(VariableNode varNode)
{
return null;
}
private Nodes.ParseTreeNode ParseVariable(IEnumerator<Token> tokenStream)
{
if (tokenStream.Current.TokenType == TokenType.Variable)
{
var varNode = new Nodes.VariableNode
{
Variable = tokenStream.Current
};
tokenStream.MoveNext();
return varNode;
}
else
{
throw ThrowHelper(tokenStream);
}
}
public abstract ConstraintViolation VisitVariableNode(VariableNode varNode);