Help me with the patterns

[ghost]

I'm very surprised that Lite XL doesn't have a Pascal lexer. So even though being an amateur I tried to create one. I have completed the keywords part but I'm stuck with the patterns now. They are something that I don't understand. My Pascal lexer is originally based on C# lexer, so the patterns part is still of C# and not yet adapted for Pascal. Please help.

https://github.com/iqskpduswupkcjqg/lite-xl-pascal-lexer/blob/main/language_pascal.lua

p/s: I tried to help with lite-xl/lite-xl-plugins#203 too, this is the result:

https://github.com/iqskpduswupkcjqg/lite-xl-modula-lexers/blob/main/language_modula2.lua

https://github.com/iqskpduswupkcjqg/lite-xl-modula-lexers/blob/main/language_modula3.lua

The patterns part is still of C# though.

[TorchedSammy]

i can't exactly help with the patterns, but keyword3 is not a standard style group. use function

[ghost]

I changed from keyword3 to function as you said.

[Guldoman]

You can use regexes if you're more familiar with them.
Instead of using pattern = "..." you can use regex = [[...]], where [[...]] is the Lua syntax for raw strings to avoid having to escape backslashes.
I also suggest reading https://lite-xl.com/en/tutorials/syntax-highlighting (which might be a bit outdated, but should still be plenty useful).

[ghost]

@Guldoman Pascal's binary number started with %, e.g: %01000100. How to write a pattern for it? I have succeed with the pattern for hex number (started with $) but so far failed with binary number. My pattern for hex: "-?%$%x+", but this equivalent for binary doesn't work: "-?%%[0-1]+". The problem is it's not only highlight the longest streak of 0s and 1s (and thus a valid binary number), it also highlight other numbers not 0 and 1 and thus an invalid binary number is also highlighted as a valid binary number, e.g: %01000100234

[ghost]

Update: it's working as expected, only because I set it to be number so both the normal number and the binary number are highlighted with the same color. Try changing it to something else not number shows it's working as expected.

Lexer Pascal has been completed. Please review:

https://github.com/iqskpduswupkcjqg/lite-xl-pascal-lexer/blob/main/language_pascal.lua

[Guldoman]

Did a quick glance at it. It looks fine.
Just a couple nits, commented here https://github.com/iqskpduswupkcjqg/lite-xl-pascal-lexer/commit/bf59f951093a8d70126bd79fee8a3715b6ba8223

[ghost]

I need a bit help with Modula-2 and Modula-3 too. The numeric literals syntax of them is very different from Pascal:

https://www.modula2.org/reference/vocabulary.php

http://modula3.github.io/cm3/reference/complete/html/2_6_4Numeric_literals.html

Both type prefixes and suffixes are involved.

[ghost]

@Guldoman Modula-2 and Modula-3 lexers are also done. Please review:

https://github.com/iqskpduswupkcjqg/lite-xl-modula-lexers/blob/main/language_modula2.lua

https://github.com/iqskpduswupkcjqg/lite-xl-modula-lexers/blob/main/language_modula3.lua

[1997tn]

#1374

[ghost]

I'm going to help with this issue https://github.com/lite-xl/lite-xl/issues/1352 (creating an Objeck lexer for Lite XL).

Draft: https://github.com/iqskpduswupkcjqg/lite-xl-objeck-lexer/blob/main/language_objeck.lua