Brummel
72e54f4fd3
The surface-form file extension changes from .ailx to .ail. AILang's
authoring surface now uses the same .ail stem as its canonical JSON
form (.ail.json), giving the language a single coherent extension
family: .ail is the LLM-authored Form A, .ail.json is the canonical
JSON-AST Form B.
Scope (touched):
- 61 example renames examples/**/*.ailx → .ail (git mv)
- 1 rename experiments/.../rendered/ailx.md → ail.md
- 35 content-edited live-toolchain files (crates/, docs/DESIGN.md,
docs/roadmap.md, docs/PROSE_ROUNDTRIP.md, skills/, bench/reference/*.c,
experiment crates under experiments/.../{render,harness,master})
- Experiment-crate cohort rename Cohort::Ailx → Cohort::Ail,
Form::Ailx → Form::Ail, per_cohort/ailx → per_cohort/ail,
{form-only: ailx} → {form-only: ail}, ```ailx → ```ail
Out of scope (deliberately untouched, to preserve honest history):
- docs/journal-archive.md (content-frozen per CLAUDE.md)
- docs/journals/, docs/specs/, docs/plans/, bench/orchestrator-stats/
- experiments/.../runs/ (frozen LLM-output artefacts; models actually
saw .ailx — renaming would falsify the experimental record)
Verification: cargo build/test --workspace green; experiment crate
cargo test green; bench/check.py + compile_check.py + cross_lang.py
all 0-regressed; negative grep for ailx|Ailx|AILX outside the
out-of-scope paths returns zero matches.
Opens immediate follow-up: roadmap.md P2 todo `ail check`/build/run
accept .ail extension — after this rename, .ail is canonical
authoring surface but the CLI still produces a misleading JSON-parse
error on `ail check foo.ail`. That's the next iter.
58 lines
2.1 KiB
Plaintext
58 lines
2.1 KiB
Plaintext
; Iter 16b.6 — LetRec inside a polymorphic enclosing fn.
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; `apply_n_times : Forall(a). Fn(Int, a, Fn(a) -> a) -> a`
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; applies `f` to `x` exactly `n` times. The recursive helper `loop`
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; captures `f` from the enclosing fn's params — `f`'s declared type
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; is `Fn(a) -> a`, which mentions the outer fn's type var `a`. The
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; 16b.6 lift produces a synthetic top-level fn
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; `loop$lr_0 : Forall(a). Fn(Int, a, Fn(a) -> a) -> a`
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; and rewrites `(app loop k acc)` → `(app loop$lr_0 k acc f)`.
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;
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; `main` drives `apply_n_times` at TWO distinct type instantiations
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; so codegen's monomorphisation queue picks up `loop$lr_0` twice
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; (once at `a = Int` to compute `succ` applied 5x to 0 → 5; once at
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; `a = Bool` to compute `not` applied 4x to false → false). This
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; exercises the substitution of the outer Forall.vars into both the
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; original LetRec params and the appended capture types.
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;
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; Expected stdout (one per line): 5, false.
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(module poly_rec_capture
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(fn succ
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(doc "Helper: increment Int. Used as the Fn(Int) -> Int instance.")
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(type (fn-type (params (con Int)) (ret (con Int))))
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(params x)
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(body (app + x 1)))
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(fn flip
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(doc "Helper: boolean negation as a top-level fn (so it has an adapter for value-position).")
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(type (fn-type (params (con Bool)) (ret (con Bool))))
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(params b)
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(body (app not b)))
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(fn apply_n_times
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(doc "Apply f to x exactly n times. Polymorphic in a.")
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(type
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(forall (vars a)
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(fn-type
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(params (con Int) a (fn-type (params a) (ret a)))
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(ret a))))
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(params n x f)
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(body
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(let-rec loop
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(params k acc)
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(type (fn-type (params (con Int) a) (ret a)))
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(body
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(if (app == k 0)
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acc
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(app loop (app - k 1) (app f acc))))
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(in (app loop n x)))))
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(fn main
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(doc "Drive apply_n_times at Int (succ 5 times from 0) and Bool (not 4 times from false).")
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(type (fn-type (params) (ret (con Unit)) (effects IO)))
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(params)
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(body
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(seq (do io/print_int (app apply_n_times 5 0 succ))
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(do io/print_bool (app apply_n_times 4 false flip))))))
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