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4 Commits

Author SHA1 Message Date
Brummel 37ac704bf3 iter revert: back out the Iteration-discipline milestone (it.1 + it.2)
One forward iteration; main never rewound. 1ff7e81 (the pre-9973546
commit) is the per-region byte oracle — every reverted source/test
file is byte-identical to it; crates/ailang-check/src/lib.rs fully so.

Root cause being corrected: the Iteration-discipline milestone was an
over-escalation of fieldtest finding F1 (a [friction] item whose own
minimal recommendation was a DESIGN.md note). Its totality dichotomy
made the maximally-LLM-natural build(d:Int)=Node(1,build(d-1),
build(d-1)) inexpressible (it.3 BLOCKED); the only in-thesis escape
(A1/it.2b) conceded the language's first documented-unenforced
totality precondition — a purity-pillar dilution the user rejected in
favour of a full revert + rebuild.

Removed: Term::Loop/Term::Recur/LoopBinder; the verify_structural_
recursion guardedness pass + term_contains_loop + Diverge-injection +
the transitively-it.2 module_fns plumbing; the five Recur*/
NonStructuralRecursion CheckError variants (+ code() + the 3 dedicated
ctx() arms); the it.1 codegen loop-header/phi/back-edge + parallel
block_terminated setter; all Loop/Recur walker arms; 16 it.1/it.2
fixtures; 2 pin files; bench/it3-oracle/. Restored: 2 RC fixtures to
1ff7e81 content.

Surgically kept (not in 1ff7e81, landed with the milestone but
independently sound): feature-acceptance clause 3 in DESIGN.md and
skills/brainstorm/SKILL.md, with its worked example de-claimed from
"shipped" to hypothetical-illustration form; the F3 P2 todo.
bench/orchestrator-stats/2026-05-15-iter-it.{1,2,3}.json kept as
historical record (like journals/plans).

Sole net addition: an honest F1/F4 documented-idiom note in DESIGN.md
(the tail-recursive accumulator fallback; examples/mut_counter.ail),
guarded by a doc-presence test — "a documentation note is not a
reshape", asserts nothing at the typecheck level.

Roadmap: the Iteration-discipline block + blocking-fork section
removed; the genuine total-Int-recursion ambition preserved as a
deferred P2 milestone sequenced behind a future Nat/refinement-types
milestone (not abandoned — correctly sequenced after the type
machinery it needs). 2026-05-15-iteration-discipline.md carries a
superseded header; it.1/it.2/it.3 journals + plans stay as history.

Correctness gate PRISTINE: 164 surviving 1ff7e81-era fixtures
ail check/ail run byte-identical to pre-milestone behaviour (verified
against a 1ff7e81 worktree reference compiler, zero drift);
cargo test --workspace 600/0; zero residual it.1/it.2 production
surface.

Spec docs/specs/2026-05-16-iteration-discipline-revert.md (b3853bf),
plan docs/plans/2026-05-16-iter-revert.md (abf0013).
2026-05-16 01:28:47 +02:00
Brummel a4be1e58a3 iter it.2: structural-guardedness checker + first real Diverge effect
Iteration-discipline milestone, 2 of 3. Strictly additive (nothing
tail-related removed; that is it.3). New whole-body pass
verify_structural_recursion sibling of verify_tail_positions
(DD-1): smaller-set algorithm with implicit candidate inference +
unconstrained accumulators (DD-2, foldl=structural), self/mutual
via inline ADT-family union-find (DD-3), it.2-only tail==false
grandfather. CheckError::NonStructuralRecursion. term_contains_loop
(stops at Term::Lam, DD-4) injects Diverge so existing
UndeclaredEffect enforces it, no new variant; lam-arrow + LetRec
sub-effect sites wired. DESIGN.md Decision 3 synced. Four it.1
loop fixtures gained !Diverge.

Two spec-premise boundary defects surfaced + resolved within the
additive invariant (corpus clean, check not weakened), recorded as
corrected it.3 corpus-migration scope: (1) the "21 tail-app
fixtures" grandfather premise under-counts the corpus —
no-ADT-candidate counter recursions have no structural position to
verify, deferred to it.3; (2) two RC-regression fixtures joined the
spec's transitional tail-app grandfather as the other 20 do (RC==GC
guards verified still green). cargo test --workspace 622/0; 9
acceptance pins non-vacuous. Spec fda9b78, plan bc9f512.
2026-05-15 15:29:43 +02:00
Brummel 6fdb45d2f2 iter rpe.1: retire per-type print effect-ops
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.
2026-05-14 02:12:34 +02:00
Brummel 72e54f4fd3 iter ext-rename: .ailx → .ail across the live toolchain
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.
2026-05-12 14:20:27 +02:00