/// <summary>
/// Build the abstract syntax tree for a given formula. The formula string will
/// be first tokenized.
/// </summary>
/// <param name="formulaText">A string containing the mathematical formula that must be converted
/// into an abstract syntax tree.</param>
/// <returns>The abstract syntax tree of the formula.</returns>
private Operation BuildAbstractSyntaxTree(string formulaText)
{
TokenReader tokenReader = new TokenReader(cultureInfo);
List<Token> tokens = tokenReader.Read(formulaText);
AstBuilder astBuilder = new AstBuilder(FunctionRegistry);
Operation operation = astBuilder.Build(tokens);
if (optimizerEnabled)
return optimizer.Optimize(operation, this.FunctionRegistry);
else
return operation;
}