public override Node VisitVariable([NotNull] FormulaGrammerParser.VariableContext context)
{
var variableNameToken = context.IDENTIFIER().Symbol;
if (this.configuration.HasConstant(variableNameToken.Text))
{
return(new ConstantNode(variableNameToken.Text));
}
if (this.configuration.IsVariablesSupportDisabled)
{
ParsingException.ThrowInvalidTokenException(variableNameToken);
}
var variableName = variableNameToken.Text;
if (!this.configuration.IsVariableNameValidationDisabled && !this.configuration.HasVariable(variableName))
{
ParsingException.ThrowUnknownVariableException(variableNameToken);
}
return(new VariableNode(variableName));
}