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feat(lang): functions are values (L2), and render3d takes its scene as callbacks

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fn(int, float) -> bool is a type, fn name is any top-level function's value, and a call through
a local, a global, a record field, a slice element, a parameter or a result of a function type
is an indirect call; two function types mix only when equal, a call checks its argument count,
and a value may be null (examples/functions/values.ludic). Job.parallel_for keeps its worker
check.

render3d's scene is registered rather than required by name: r3d_on_draw, r3d_on_casters and
r3d_on_stream_fill (hooks.ludic). The two rendering examples register theirs - and had defined
scene_draw_casters with no parameter while the renderer passed one, which nothing checked.
render3d declares numbers float itself; smooth.ludic is converted to floats and returns when
r3d_init fails instead of running on into a segfault. Noise.* check their argument count (a call
one short crashed the compiler). selfhost-build says why it failed. The migration tool reads a
declared float as evidence. Seed regenerated.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-24 00:27:26 +03:00
parent dc75a5a5ab
commit 0c73287e35
23 changed files with 71430 additions and 68575 deletions
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bump: minor
type: feat
**Functions are values (L2).** `fn(int, float) -> bool` is a type, `fn name` is any top-level
function's value (it used to be only a thread worker's address), and a call through a local, a
global, a record field, a slice element, a parameter or a result of a function type is an
indirect call. Two different function types do not mix, a call through one checks its argument
count, and a value may be `null`. A registry can hold behaviour and a package can take
callbacks. `Job.parallel_for` still checks that its worker takes (int, pointer) and returns
nothing. `ludic-dev selfhost-build` now says why it failed instead of exiting 1 silently.