/// <summary>
/// Reads an operator from the given string expression, starting at the given position.
/// </summary>
/// <param name="expr">The expression to read the operator from.</param>
/// <param name="pos">The position to start reading at.</param>
/// <returns>The result of the read.</returns>
internal ReadResult ReadOperator(string expr, int pos)
{
ReadResult result = new ReadResult()
{
Position = pos
};
char c = expr[pos];
if (!char.IsWhiteSpace(c))
{
IOperationProvider provider = this.providerFactory.GetProvider(c);
if (provider != null)
{
result.Token = provider.CreateOperator(c);
result.Position = pos + 1;
result.Success = true;
}
}
return(result);
}
