Unable to extend evaluator with additional Functions, no equivilent of AddOperation on parser.cs #7
Description
My use case requires the ability to add into some additional simple functions for common business rule stuff (imagine a ORDER_ID() function that takes strings and produces a valid order id). In some cases, I could build the expression from using the provided functions, but since the idea of using your Evaluation engine is to expose a simple 'Excel' like set of functions for my users, the required complexity to get business rules is too high.
The Parser supports registering custom operators but the way Type.GetType locates the function identifiers, it can't locate types outside the org.matheval assembly.
See MSDN:
With this issue I'm also uploading proposed API addition to Parser.cs.
and
And a simple test in TestAll.cs
to support my use case.
Thank you.