/// <summary>
/// Verify a collection of variables to ensure that all the variable names are valid.
/// Users are not allowed to overwrite reserved variables or use function names as variables.
/// If an invalid variable is detected an exception is thrown.
/// </summary>
/// <param name="variables">The colletion of variables that must be verified.</param>
private void VerifyVariableNames(Dictionary <string, double> variables)
{
foreach (string variableName in variables.Keys)
{
if (EngineUtil.IsReservedVariable(variableName))
{
throw new ArgumentException(string.Format("The name \"{0}\" is a reservered variable name that cannot be overwritten.", variableName), "variables");
}
if (FunctionRegistry.IsFunctionName(variableName))
{
throw new ArgumentException(string.Format("The name \"{0}\" is a function name. Parameters cannot have this name.", variableName), "variables");
}
}
}
