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AILang/design/INDEX.md
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Brummel fbdbe740e6 iter raw-buf.2-kernel-rename (DONE 2/2): ailang-kernel-stub → ailang-kernel family-crate (refs #7) 
Pure crate rename, zero behavioural change. ailang-kernel-stub becomes
the ailang-kernel family-crate: a re-export hub (src/lib.rs) plus one
submodule per kernel-tier module (today only kernel_stub:
src/kernel_stub/{mod.rs, source.ail}). raw-buf.3 plugs raw_buf in as a
sibling submodule; this iter only builds the home.

Task 1 (atomic — the rename breaks the build until every site is
threaded):
- git mv crates/ailang-kernel-stub → crates/ailang-kernel.
- Carved the STUB_AIL Form-A body verbatim (byte-identical, verified
  via diff against HEAD's raw string) into src/kernel_stub/source.ail,
  loaded by mod.rs via include_str!. The answer (intrinsic) fn is
  byte-preserved — its INTERCEPTS bijection partner stays pinned.
- lib.rs is now the hub: `pub use kernel_stub::SOURCE as STUB_AIL;`.
  The public symbol STUB_AIL is preserved, so ailang-surface and the
  bijection test bind to it unchanged.
- 8 compile sites threaded across 6 files: Cargo package name,
  workspace member + dep-alias, ailang-surface dep, loader.rs
  use-paths (ailang_kernel_stub → ailang_kernel). Cargo.lock
  auto-regenerated.

Task 2 (doc/ledger honesty, no build impact):
- design/INDEX.md, CLAUDE.md code-layout row + lockstep-pair row,
  design/models/0007 ×2 — crate-path strings updated to the new
  ailang-kernel/src/kernel_stub path.
- Scope note: the spec's raw-buf.2 Components row named only
  design/INDEX.md + the CLAUDE.md code-layout row. plan-recon found two
  more present-tense crate-path refs (CLAUDE.md:312 lockstep row,
  model 0007:8/235). Folded them in per the honesty-rule — a rename
  that leaves stale present-state paths is an incomplete rename.
  Path-only; the retirement narrative stays for raw-buf.4.

The AILang module name kernel_stub (the Form-A string + parse_kernel_stub
fn) is deliberately unchanged — only the crate identifier moved.

Verification (orchestrator, this session): cargo build --workspace
clean; cargo test --workspace 669 passed / 0 failed / 2 ignored
(baseline held exactly — no test added/removed). Carve byte-identity
confirmed by diff; no stale ailang-kernel-stub / ailang_kernel_stub
refs remain in-tree (git grep, excl. history + lockfile). The four
rename-invisible ratifiers (kernel_stub_module_round_trips,
intercepts_bijection_with_intrinsic_markers, .ll snapshots,
workspace_pin) all green via the preserved re-export.
2026-05-29 18:39:36 +02:00

7.6 KiB
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AILang Design — Index

The sole addressable entry point. Every contract and model is reached from here. A contract is a prescriptive, test-linked invariant; a model is a whitepaper narrative. ratifying-test names the green test that proves a contract still holds. link is polymorphic: a design/ file, or the authoritative source //! header when the code is the single source of truth.

Project framing

Goal

AILang is a programming language for LLM authors. It compiles to LLVM IR. Performance: native, no GC for the MVP.

Optimised for:

  • Machine readability over human ergonomics. The source is structured.
  • Local reasoning. Every definition carries its full type and effects.
  • Provability. Pure core language, explicit effects, optional refinements.
  • Robustness against hallucinations. Symbols are hashable; tools can verify existence without spending context window.

Project ecosystem

AILang is not just a language but an ecosystem. The language on its own is only valuable when its surroundings make it usable, checkable, and extensible for its target user (LLM authors). The repo therefore contains several equally important components — none of them optional, all of them evolving in lockstep with the language:

  • Language core (crates/ailang-core, crates/ailang-check, crates/ailang-codegen): AST, type system, codegen.
  • Surface forms (crates/ailang-surface, crates/ailang-prose): the LLM-facing renderings of a module. ailang-surface is the lossless Form-A printer/parser — the canonical authoring surface, with a round-trip property parse ∘ print = id gating every release. ailang-prose is the lossy Form-B projection — human-readable prose for review and edit, with no parser; re-integration goes through the LLM-mediator round-trip documented in docs/PROSE_ROUNDTRIP.md.
  • CLI (crates/ail): toolchain for tooling consumers — manifest, describe, deps, check, build, parse, render, prose, merge-prose, etc., preferably with --json for machine consumption.
  • Examples (examples/): canonical .ail.json programs. They are specification anchors, not demos — the E2E suite hangs off them.
  • Skills (~/dev/skills/ plugin, wired in via .claude/dev-cycle-profile.yml): specialised disciplines (brainstorm, planner, implement, audit, debug, fieldtest, docwriter, boss) plus the agent rosters they dispatch. They form the project's development methodology; the plugin is versioned separately, the per-project profile is in-tree.
  • Design ledger (design/): design/INDEX.md (this file — the sole addressable spine for canonical state), design/contracts/ (test-linked invariants), design/models/ (onboarding whitepapers).
  • Docs (docs/): specs/ (per-milestone design specs), plans/ (per-iteration implementation plans). Project history lives in git log; the forward queue lives in the Gitea issue backlog (http://192.168.178.103:3000/Brummel/AILang/issues).
  • Tests: unit tests per crate plus E2E in crates/ail/tests/e2e.rs. Every new compiler path needs a test, otherwise the feature does not count as done.

Project language: English

All in-tree content is written in English: source code (identifiers, comments, string literals, CLI help), design documents, agent prompts, READMEs, commit messages, examples, and CLAUDE.md. The live conversation between user and me stays German for ergonomic reasons; everything that lands in git is English. This keeps diffs and tooling output uniform and matches the audience for AILang (LLM authors), for whom English is the default.

Contracts

id consumer / lifetime ratifying-test link
feature-acceptance brainstorm-gate / stable CLAUDE.md design/contracts/0004-feature-acceptance.md
authoring-surface LLM author / stable crates/ailang-surface/tests/round_trip.rs design/contracts/0001-authoring-surface.md
roundtrip-invariant every release / stable crates/ailang-surface/tests/round_trip.rs design/contracts/0009-roundtrip-invariant.md
language-constraints LLM author / stable crates/ailang-check/src/uniqueness.rs (in-source mod tests) design/contracts/0015-language-constraints.md
memory-model LLM author / stable crates/ailang-check/src/uniqueness.rs (in-source mod tests) design/contracts/0008-memory-model.md
data-model LLM author / stable crates/ailang-core/tests/design_schema_drift.rs design/contracts/0002-data-model.md
mangling codegen / stable crates/ail/tests/eq_ord_e2e.rs crates/ailang-codegen/src/lib.rs //!
env-construction codegen / stable crates/ailang-check/tests/duplicate_ctor_pin.rs crates/ailang-codegen/src/lib.rs //!
qualified-xref codegen / stable crates/ail/tests/codegen_import_map_fallback_pin.rs crates/ail/src/main.rs //!
frozen-value-layout embedding ABI / one-way-frozen crates/ailang-codegen/tests/embed_record_layout_pin.rs design/contracts/0006-frozen-value-layout.md + runtime/rc.c §layout
float-semantics LLM author / stable crates/ail/tests/eq_float_noinstance.rs design/contracts/0005-float-semantics.md
typeclasses LLM author / stable crates/ail/tests/show_no_instance_e2e.rs design/contracts/0013-typeclasses.md
method-dispatch LLM author / stable crates/ail/tests/show_no_instance_e2e.rs design/contracts/0016-method-dispatch.md
prelude-classes LLM author / stable crates/ail/tests/show_no_instance_e2e.rs design/contracts/0017-prelude-classes.md
str-abi runtime ABI / stable crates/ail/tests/e2e.rs (Str path) design/contracts/0011-str-abi.md + runtime/str.c §heap-Str
tail-calls codegen / stable crates/ailang-check/src/lib.rs (in-source tail_call_in_non_tail_position_is_rejected) design/contracts/0012-tail-calls.md
honesty-rule architect+grounding / stable crates/ailang-core/tests/docs_honesty_pin.rs design/contracts/0007-honesty-rule.md
embedding-abi embedding host / stable crates/ailang-codegen/tests/embed_record_layout_pin.rs design/contracts/0003-embedding-abi.md
scope-boundaries architect+author / stable crates/ailang-core/tests/effect_doc_honesty_pin.rs design/contracts/0010-scope-boundaries.md
verification architect / stable bench/architect_sweeps.sh design/contracts/0014-verification.md

Models

id consumer / lifetime link
rc-uniqueness onboarding / evolves design/models/0004-rc-uniqueness.md
typeclasses onboarding / evolves design/models/0005-typeclasses.md
effects onboarding / evolves design/models/0002-effects.md
authoring-surface onboarding / evolves design/models/0001-authoring-surface.md
prose-projection onboarding / evolves design/models/0006-prose-projection.md
pipeline onboarding / evolves design/models/0003-pipeline.md
kernel-extensions onboarding / evolves (mechanisms milestone closed 2026-05-28; ratified end-to-end by the ailang-kernel/src/kernel_stub fixture, planned for retirement when raw-buf lands a real second consumer; raw-buf and series milestones pending) design/models/0007-kernel-extensions.md
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