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refactor(lang): rename the fn keyword to function

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Expand the function-declaration keyword to the full word across the whole
language and toolchain:
  fn name(...) -> T { ... }   ->   function name(...) -> T { ... }

Done as a self-hosting migration: teach the parser both spellings, reseed,
rewrite every .ludic definition to `function`, then drop `fn`. The compiler
now rejects `fn`. Touches the parser, all selfhost/tools/runtime/example/test
sources, the grammars (TextMate shared+vscode, ludic_syntax.h, JetBrains
LudicTokens.kt), the LSP and formatter, the Python doc/vocab tools
(check-impl, check-docs, validate, palette, test-lsp), and the docs
(fences, prose, kw-fn -> kw-function).

Reseeded; C-free bootstrap fixpoint holds. All suites green (45 regression,
24 self-host, 29 tool); the docs site generates and check.py passes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-08-30 01:43:22 +03:00
parent 2f19c8d8e2
commit 4c48077d68
86 changed files with 793 additions and 793 deletions
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6
selfhost/emit_ease.ludic
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@ -2,19 +2,19 @@
# t in 0.0..1.0, returning an eased fixed. All pure Q16.16, deterministic. The
# "juice" layer that makes motion feel good (Robert Penner's easings).
fn is_ease_ns(meth: ptr) -> bool {
function is_ease_ns(meth: ptr) -> bool {
if (meth == "in") or (meth == "out") or (meth == "in_out") { return true }
if (meth == "back") or (meth == "bounce") or (meth == "elastic") { return true }
return false
}
# n1 * u * u (u a fixed code) -> code of a fixed i32
fn ease_bounce_seg(u: ptr) -> ptr {
function ease_bounce_seg(u: ptr) -> ptr {
let uu = fx_mul_code(u, u)
return fx_mul_code(uu, "495616") # 7.5625 * u*u
}
fn emit_ease_ns(meth: ptr, e: Node) -> Val {
function emit_ease_ns(meth: ptr, e: Node) -> Val {
let t = emit_expr(e.kids[0])
if (meth == "in") { # ease-in quad: t*t
return val(fx_mul_code(t.code, t.code), "fixed")