Preprocessing macros

[Galdormin]

First of all, I would like to thank you for this fantastic crate. I think the Cobweb format is really great, especially all the little features that make it so handy.

I would like to know if you had planned to make a preprocessing system with a macro system or a system to quickly define a large number of data?

Here's my use case. I have a large spritesheet and I defined the relation between the index of the atlas and the (composite) enum:

LightAtlas<ComplexLightIcon>{
    off: 0
    on_index:{
        Full(Off): 0
        Full(Green): 1
        Full(Yellow): 2
        Full(Red): 3
        Id(Off): 4
        ....
        Heart(Green): 29
        Heart(Yellow): 30
        Heart(Red): 31
    }
}

It's particularly long and a macro or data definition system could be useful. This could look like this (here inspired by Python):

#defs
$atlas_map = \ 
    $icon.value($color.value):$icon.idx*4 + $color.idx
    for icon, color in combination(
        [Full, Id, Sun, Key, Lever, Hashtag, Corner, Heart],
        [Off, Green, Yellow, Red]
    ) 
\

...

LightAtlas<ComplexLightIcon>{
    off: 0
    on_index:{$atlas_map}
}

[UkoeHB]

Hey, glad the crate's working for you.

I would like to know if you had planned to make a preprocessing system with a macro system or a system to quickly define a large number of data?

It would be cool to design a template system like flecs scene format. This would require a few things:

• Parameterize constants and scene macros.
• Add function reflection so you can 'call' arbitrary functions inside cob files.
• Add built-in math operators (+-/*).
• Add for-each pattern.

Unfortunately, at the moment I don't have time to work on any major new features.