Eval.Tokenize throws NullReferenceException if a variable starts with _ and the next character is a number

[fidke]

For example if the variable name is _1, this is valid c# code that compiles but Eval.Tokenize will throw an exception if it encounters the _1 variable:

var _1 = 1;
if(_1 > 1) { /* do something */ }

---

STR:

Eval.Tokenize("_1 > 1");

Throws exception:

Unhandled exception. System.NullReferenceException: Object reference not set to an instance of an object.
   at ?.?(StringBuilder ?)
   at Z.Expressions.CodeAnalysis.CSharp.SyntaxParser.Tokenize(SyntaxParserOptions options, String code)
   at Z.Expressions.EvalContext.Tokenize(String code) ...

[fidke]

Tested in version 4.0.63

[JonathanMagnan]

Hello @fidke ,

Thank you for reporting, we support _a (followed by a char) but not _1 (followed by a number).

This is probably something we missed and should not be hard to fix.

One of my developers will look at it.

Best Regards,

Jon

[JonathanMagnan]

Hello @fidke ,

The v4.0.64 has been released.

We fixed many cases in which the _ was not working as expected.

Let us know if everything is working on your side.

Best Regards,

Jon