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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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8
selfhost/emit_collide.ludic
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@ -3,14 +3,14 @@
# origin at the top-left; circles are (x, y, r). Squared distances use i64 so a
# large coordinate can't overflow. Each returns a bool.
fn is_collide_ns(meth: ptr) -> bool {
function is_collide_ns(meth: ptr) -> bool {
if (meth == "rects") or (meth == "point_rect") { return true }
if (meth == "circles") or (meth == "rect_circle") { return true }
return false
}
# dx*dx + dy*dy widened to i64 (no overflow for 32-bit deltas)
fn coll_sq_sum(dx: ptr, dy: ptr) -> ptr {
function coll_sq_sum(dx: ptr, dy: ptr) -> ptr {
let dx64 = emit_bind(`sext i32 {dx} to i64`)
let dy64 = emit_bind(`sext i32 {dy} to i64`)
let xx = emit_bind(`mul i64 {dx64}, {dx64}`)
@ -19,14 +19,14 @@ fn coll_sq_sum(dx: ptr, dy: ptr) -> ptr {
}
# max(lo, min(v, hi)) — clamp v into [lo, hi]
fn coll_clamp(v: ptr, lo: ptr, hi: ptr) -> ptr {
function coll_clamp(v: ptr, lo: ptr, hi: ptr) -> ptr {
let c1 = emit_bind(`icmp slt i32 {v}, {hi}`)
let t = emit_bind(`select i1 {c1}, i32 {v}, i32 {hi}`)
let c2 = emit_bind(`icmp sgt i32 {lo}, {t}`)
return emit_bind(`select i1 {c2}, i32 {lo}, i32 {t}`)
}
fn emit_collide_ns(meth: ptr, e: Node) -> Val {
function emit_collide_ns(meth: ptr, e: Node) -> Val {
if (meth == "rects") { # AABB overlap of two rects
let ax = emit_expr(e.kids[0]); let ay = emit_expr(e.kids[1]); let aw = emit_expr(e.kids[2]); let ah = emit_expr(e.kids[3])
let bx = emit_expr(e.kids[4]); let by = emit_expr(e.kids[5]); let bw = emit_expr(e.kids[6]); let bh = emit_expr(e.kids[7])