Brummel
6fdb45d2f2
Single iter shipping the post-milestone-24 follow-up named in
docs/specs/2026-05-14-retire-per-type-print-effects.md. After this
iter the only surviving direct-output effect-op is `io/print_str`;
all per-type print primitives are replaced by the polymorphic
`print` helper (prelude, iter 24.3).
Components:
- 92 examples/*.ail fixtures migrated (do io/print_<T> x) →
(app print x); 6 .prose.txt snapshots regenerated via `ail prose`.
- Four-site lockstep compiler deletion: crates/ailang-check/src/builtins.rs
(3 effect_ops.insert blocks + 3 list() rows + the
install_io_print_float_signature test + module + EffectOpSig
doc-comments); crates/ailang-codegen/src/lib.rs lower_app
(3 arms + lowers_io_print_float test); crates/ailang-codegen/src/synth.rs
builtin_effect_op_ret match-arm pattern. Dead `intern_string`
helper removed as a follow-up.
- Five incidental test-body migrations (ailang-check x2, ailang-core
spec_drift + design_schema_drift, ailang-surface/src/lex.rs,
ailang-prose/src/lib.rs round-trip test).
- Cat B test-harness patch: six IR-shape tests in
crates/ail/tests/e2e.rs gained a monomorphise_workspace call
before lower_workspace_with_alloc so they follow the same
pipeline as `ail build` (the home-rolled desugar+lift loop
stayed because mono's precondition is "already lifted"; mono
inserts after lift).
- Six doc-comment touch-ups (lex.rs module doc, parse.rs
diagnostic example, ail/src/main.rs x2, runtime/str.c %g anchor,
crates/ailang-core/specs/form_a.md surface-spec example).
- DESIGN.md seven-site sweep (Decision 11 example, Polymorphic
print past-tense, Heap-Str output sentence, effect-op
invocation comment, Float NaN paragraph re-anchored on
float_to_str, two "What is supported" lists).
- Three E2E test-comment polish + four IR-snapshot refresh + one
canonical-hash pin update (plan-unanticipated downstream
consequences of the corpus migration).
- bench/{check,compile_check,cross_lang}.py: all exit 0; no
ratification needed.
- Roadmap entry struck through; per-iter journal at
docs/journals/2026-05-14-iter-rpe.1.md.
Tests 564/0/3. cargo clippy and cargo doc: zero warnings.
Two upstream codegen bugs surfaced during the first BLOCKED
attempt and were fixed in separate iters before this retry:
- 1fb225e bugfix: mono cursor misalignment at poly-free-fn Var
with class-constrained Forall.
- feb9413 bugfix: print leak — propagate ret_mode through rigid
substitution + prelude Show.show ret_mode.
Known debt (carried forward for next /audit):
- Emitter.strings field is functionally dead post-iter (orphan
after intern_string removal); cycles over empty map harmlessly.
34 lines
1.3 KiB
Plaintext
34 lines
1.3 KiB
Plaintext
; Iter 16b.5 — LetRec name as value (in_term, no capture).
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; A recursive `factorial` is bound by `(let-rec ...)` inside `main`,
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; then in the in-clause it is passed as a VALUE to a higher-order
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; combinator `apply5` (which expects `Fn(Int) -> Int`). Without
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; 16b.5, the desugar pass would panic with the "name-as-value not
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; supported" message. With 16b.5 it wraps the in-term in
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; `(let factorial (lam ...) ...)` whose lam eta-expands the lifted
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; top-level fn — so `factorial` reaches `apply5` as a closure-pair
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; value just like any other fn-value (Iter 7/8b ABI).
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;
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; Expected stdout: 120 (= apply5 factorial = factorial 5).
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(module local_rec_as_value
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(fn apply5
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(doc "Higher-order: applies its fn argument to 5.")
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(type (fn-type (params (fn-type (params (con Int)) (ret (con Int)))) (ret (con Int))))
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(params f)
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(body (app f 5)))
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(fn main
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(doc "Iter 16b.5: pass a let-rec'd factorial as a value to apply5. Expected stdout: 120.")
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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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(let-rec factorial
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(params n)
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(type (fn-type (params (con Int)) (ret (con Int))))
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(body
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(if (app <= n 1)
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1
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(app * n (app factorial (app - n 1)))))
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(in (app print (app apply5 factorial)))))))
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