orm: support lowercase operators like, in, not in etc

[Delta456]

solves #25032

[huly-for-github]

Connected to Huly®: V_0.6-23552

[JalonSolov]

I would be somewhat simpler to create an UPPERCASE copy of the input, and stepping though that, instead of adding all the lowercase versions of things.

[Delta456]

I would be somewhat simpler to create an UPPERCASE copy of the input, and stepping though that, instead of adding all the lowercase versions of things.

I did think about ss.input[ss.pos..].to_upper() but that might be overkill for small comparison.

[JalonSolov]

No, I meant

tmp_ss := ss.input.to_upper()

then

if tmp_ss[ss.pos..].starts_with('IS NOT NULL')

later in the code.

In other words, keep ss.input as-is, do the .to_upper() call once, and only do comparisons against tmp_ss.

[JalonSolov]

Of course, if you copy anything out of ss.input, always copy out of the original, not tmp_ss.

[Delta456]

Of course, if you copy anything out of ss.input, always copy out of the original, not tmp_ss.

Good idea. I just pushed the changes. Do review

[spytheman]

Excellent work.