POC of smithay-derive

[PolyMeilex]

TODO: [ ] Support all modules [ ] Add old macro style as well, not only derive, and remove old definitions [ ] If we add non-derive style macro, crate should probably be renamed to smithay-macros or smithay-proc [ ] Use in anvil and smallvil

[codecov-commenter]

Codecov Report

Patch coverage has no change and project coverage change: -0.32% :warning:

Comparison is base (8d239c7) 24.20% compared to head (5dbabfa) 23.88%. Report is 47 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1090      +/-   ##
==========================================
- Coverage   24.20%   23.88%   -0.32%     
==========================================
  Files         140      141       +1     
  Lines       22334    21695     -639     
==========================================
- Hits         5405     5182     -223     
+ Misses      16929    16513     -416     

Flag	Coverage Δ
wlcs-buffer	20.92% <0.00%> (-0.39%)	:arrow_down:
wlcs-core	20.55% <0.00%> (-0.42%)	:arrow_down:
wlcs-output	8.41% <0.00%> (-0.13%)	:arrow_down:
wlcs-pointer-input	22.59% <0.00%> (-0.32%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
src/wayland/compositor/mod.rs	49.74% <0.00%> (-13.08%)	:arrow_down:
src/wayland/module_registry.rs	0.00% <0.00%> (ø)
src/wayland/output/mod.rs	52.27% <0.00%> (-9.07%)	:arrow_down:
src/wayland/shm/mod.rs	43.15% <0.00%> (-13.01%)	:arrow_down:

... and 49 files with indirect coverage changes

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[ids1024]

So, this should also eliminate the need to write/copy long and arcane macro_rules! delegate_* declarations? That will be nice. That is not a highlight of dealing with code in smithay and mithay-client-toolkit.

smithay-macros may be a better name if we add other kinds of proc macros to it later. But it doesn't matter that much.

[PolyMeilex]

So, this should also eliminate the need to write/copy long and arcane macro_rules! delegate_* declarations?

Yep, the module descriptor is enough to handle both derive macros and our current style of macros if we'd want that (haven't implemented the non-derive variant yet, tho).