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Sessions 56–69: declarative macro! with rep/zip/literal/block and unhygienic var $name binders; partial field-move skip Drop; @[Release] polish; LSP type hierarchy; CI Nim cache + lean macOS + Windows smoke.
1125 lines
57 KiB
Markdown
1125 lines
57 KiB
Markdown
# Bux — План към „добър“ език (v0.5 → v1.0)
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> **Дата:** 2026-07-20
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> **Текущо:** v0.5.x — macros (unhygienic binders + multi-rep), partial field-move, lean CI
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> **Цел:** Език, с който се пишат реални проекти комфортно, безопасно (по избор) и с надежден toolchain.
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---
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## Диагноза (къде сме)
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| Слой | Състояние | Оценка |
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|------|-----------|--------|
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| Frontend (lex/parse) | Пълен Pratt parser, recovery | ★★★★☆ |
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| Sema / generics | Monomorphization, trait bounds basic | ★★★★☆ |
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| HIR → C | Tuples + fat `func` ABI в bootstrap **и** selfhost | ★★★★☆ |
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| Selfhost (`src/`) | ~12k LOC, binary-identical loop, closures+tuples | ★★★★★ |
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| Gradual ownership | `@[Checked]`, move, Drop, elision, **field-move skip Drop** | ★★★★★ |
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| Concurrency | M:N tasks + channels + async | ★★★★☆ |
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| Stdlib | Array/Map/Set/String/Iter HOF разширени | ★★★★☆ |
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| Tooling | LSP 0.5 hover/def/outline/**refs/rename** + fmt/test/doc | ★★★★★ |
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| Ecosystem / registry | path+git + file **+ HTTP** index (`bux search/add`) | ★★★★☆ |
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| Документация | README + QUALITY_PLAN синхронизирани (2026-07-15) | ★★★★☆ |
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**Силна ниша:** gradual ownership (C-скорост на писане + opt-in Rust-safety).
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**Слабо място:** ergonomics на stdlib + maturity на tooling + пълнота на borrow checker.
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---
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## Какво значи „добър“ за Bux
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1. **Ежедневен DX** — колекции, string, assert, грешки, които разбираш за секунди.
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2. **Предвидима безопасност** — `@[Checked]` да хваща 80% от UAF/double-borrow без lifetime hell.
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3. **Selfhost като dogfood** — компилаторът и apps (`nexus`, `boko`) са proof.
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4. **Инструменти** — fmt, test, LSP, package install без ръчна магия.
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5. **Стабилна спецификация** — LanguageRef = реалното поведение.
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Не целим „по-добър Rust“. Целим **единствения език с gradual safety + Go-стил concurrency без GC**.
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---
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## Фази
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### A — Ergonomics & Stdlib (P0) ✅ (core done)
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| # | Задача | Защо | Статус |
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|---|--------|------|--------|
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| A.1 | Array: Pop, Clear, IsEmpty, First, Last, Cap, Reserve | Без това колекциите са неудобни | ✅ (тази сесия) |
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| A.2 | String: IsEmpty, ReplaceAll | Чести операции; само first-replace досега | ✅ (тази сесия) |
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| A.3 | Os_Exit + Test_AssertEqString / richer asserts | Тестове и CLI без raw `bux_exit` | ✅ (тази сесия) |
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| A.4 | Map_Remove / Set polish | Completeness на колекциите | ✅ (тази сесия) |
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| A.5 | Iter: map/filter/fold върху closures | Higher-order без boilerplate | ✅ generic `Iter_Map`/`Filter`/`Fold` + Int aliases |
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| A.6 | Result helpers: Expect, UnwrapErr, Or | По-малко match boilerplate | ✅ (тази сесия) |
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### B — Compiler Correctness (P0)
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| # | Задача | Защо | Статус |
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|---|--------|------|--------|
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| B.1 | Proper tuple types в C backend | `(T,U)` → `Tuple_T_U` struct + `.0`/`.1` | ✅ bootstrap + selfhost |
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| B.2 | Function pointer types | `func(T)->U` fat ABI | ✅ bootstrap + selfhost |
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| B.3 | Match expression lowering (literals, ranges, enums) | Expression-context match → if-else | ✅ bootstrap + selfhost |
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| B.3b | Pattern bindings (`Some(value) => value`) | Payload idents bound in arm body | ✅ bootstrap + selfhost |
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| B.3c | Match arm guards (`p if cond => …`) | Bindings visible in guard; sequential found-flag lower | ✅ bootstrap + selfhost |
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| B.4 | Closures multi-instance | Fat `BuxFn` + heap env | ✅ bootstrap + selfhost |
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| B.4b | Closures: `\|\|` empty params + loop/return body | Lexer `\|\|` vs empty closure; while/break/return | ✅ bootstrap + selfhost |
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| B.5 | По-добри diagnostics (snippet + hint) | DX #1 за нови потребители | ✅ |
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| B.6 | Bootstrap ↔ selfhost feature parity | empty `\|\|`, match-as-expr, **string interp `f"..."`** bootstrap+selfhost | ✅ |
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### C — Gradual Ownership 2.0 (P1)
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| # | Задача | Защо | Статус |
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|---|--------|------|--------|
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| C.1 | Lifetime elision за common cases | Без `'a` в 90% от API-тата | ✅ bootstrap + selfhost |
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| C.2 | Exclusive `&mut` vs shared `&` data-flow | По-малко false negatives | ✅ let-bound + use-while + call conflict |
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| C.3 | Auto-drop edge cases (early return, branches) | RAII да е надежден | ✅ bootstrap + selfhost |
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| C.4 | `@[Release]` zero-cost path документация + golden tests | Killer story: safe default, free hot path | ✅ full (docs + Release wins + tests + example) |
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### D — Tooling (P1)
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| # | Задача | Защо | Статус |
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|---|--------|------|--------|
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| D.1 | LSP: hover, go-to-def, diagnostics | IDE = adoption | ✅ v0.11.0: + **interface dispatch hierarchy** |
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| D.2 | `bux fmt` стабилен + CI check | Единен style | ✅ full-tree format + `make fmt-check` enforce |
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| D.3 | `bux test` с `--filter`, exit codes, summary table | CI-friendly | ✅ `--filter` / summary / exit 0\|1 |
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| D.4 | `bux doc` от `///` comments | Самодокументиращ се stdlib | ✅ bootstrap+selfhost + `make docs` |
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| D.5 | Golden tests за stdlib modules | Регресии без изненади | ✅ `tests/stdlib_golden/` + `make test-stdlib` |
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### E — Ecosystem & v1.0 (P2)
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| # | Задача | Защо | Статус |
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|---|--------|------|--------|
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| E.1 | Package registry protocol (git/HTTP) | `bux add foo` без path hacks | ✅ local index + **HTTP(S) URL** cache + file/git + `search` |
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| E.2 | 3–5 production-quality apps в `apps/` | Showcase | ✅ 4 apps + `make test-apps` smoke (build + CLI) |
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| E.3 | Language freeze + semver policy | Trust | ✅ draft `docs/SEMVER.md` |
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| E.4 | Debugger/DWARF basics | Systems audience | ✅ `#line`→`.bux` + `-g` / `--release`; `make test-dwarf` |
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| E.5 | Benchmarks vs C/Zig/Nim (micro + nexus) | Marketing + regression | ✅ micro + C/Nim/Zig twins + `make bench-nexus` (wrk) |
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---
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## Препоръчан ред на работа
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```
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A (stdlib ergonomics) → B (compiler holes) → C (ownership depth)
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↓ ↓
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D (tooling) ←────────── dogfood apps
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↓
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E (v1.0 ecosystem)
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```
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**Правило:** всяка сесия ship-ва нещо runnable (stdlib API, fix, example), не само docs.
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---
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## Acceptance criteria за „добър v1.0“
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- [x] Всички examples + apps + selfhost smoke на CI (`make test` via `.github/workflows/ci.yml`); selfhost-loop optional
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- [ ] Array/Map/String/Test API покрива 90% от ежедневните нужди
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- [x] `@[Checked]` хваща use-after-move + double `&mut` + dangling return / elision fail
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- [x] `bux test` + `bux fmt` + `bux check` са default developer loop (`--filter` / `--check` shipped)
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- [x] LanguageRef синхронизиран с компилатора (incl. C.1 elision)
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- [x] Поне един външен/temp проект build-ва с registry dep (`tools/smoke_registry.sh` + HTTP)
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---
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## Сесия 1 (stdlib ergonomics)
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1. `Array_Pop`, `Array_Clear`, `Array_IsEmpty`, `Array_First`, `Array_Last`, `Array_Cap`, `Array_Reserve`
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2. `String_IsEmpty`, `String_ReplaceAll`
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3. `Os_Exit`
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4. `Test_AssertEqString`, `Test_AssertNeqInt`, `Test_AssertEqBool`
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5. Example + docs update
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## Сесия 2 (collections + tuples)
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1. `Map_Remove` / `Map_Clear` / `Map_IsEmpty` (+ StringMap)
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2. `Set_Remove` / `Set_Clear` / `Set_IsEmpty`
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3. `Result_Expect` / `Result_UnwrapErr` / `Result_Or`
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4. `Option_Expect` / `Option_Or`
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5. **Tuples:** `(T, U)` → `typedef struct { T _0; U _1; } Tuple_T_U` + field access `.0`/`.1`
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6. Examples: `tuples`, `func_ptr`, `map_remove`
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## Сесия 3 (diagnostics + collections)
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1. **Rust-style errors** in bootstrap CLI: `--> file:line:col`, source snippet, `^` caret, `= help:` hints
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2. `SourceLocation.file` propagated from lexer
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3. Better caret for type-mismatch on `let` (points at initializer)
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4. `Array_Contains` / `Array_IndexOf` / `Array_Extend`
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5. `Iter_AnyEq` / `Iter_AllEq` / `Iter_Collect`
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6. Selfhost `Diagnostic_Hint` for common messages
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## Сесия 4 (diagnostics depth + LSP + strings)
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1. **Multi-char underlines** (`^^^^^^^` under tokens/strings/idents)
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2. Quoted-name highlighting for `undeclared identifier 'x'`
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3. **Golden error tests** (`tests/error_golden/`, `make test-errors`)
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4. **LSP** runs `buxc check` and publishes real diagnostics
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5. `String_IsBlank` / `String_Repeat`
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## Сесия 5 (multi-instance closures)
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1. **Fat function pointers** for all `func(...)` types: `BuxFn { code(env, args...), env }`
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2. Capturing closures: heap-allocate env per creation site (independent instances)
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3. Capture-less closures + named funcs: adapters with `env = NULL`
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4. Calls through func values: `f.code(f.env, args...)`
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5. Example `multi_closure.bux` — MakeAdder(10)/MakeAdder(20) yield 11 and 21
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6. **Selfhost parity:** same fat ABI in `src/hir_lower.bux` + `src/c_backend.bux` (makers, adapters)
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## Сесия 6 (selfhost tuples)
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1. Parser: `(T, U)` types, `(a, b)` exprs, field access `.0`/`.1`
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2. Sema: tekTuple / ekTuple
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3. HIR lower → `hStructInit` of `Tuple_int_int`
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4. C backend: `typedef struct Tuple_int_int { int _0; int _1; }`
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5. Verified with `buxc2` on `examples/tuples.bux`
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## Сесия 7 (Iter HOF)
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1. `Iter_MapInt` / `FilterInt` / `FoldInt` / `ForEachInt` / `AnyInt` / `AllInt` / `SumInt`
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2. Named funcs + capturing closures (fat ABI)
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3. Example `iter_hof.bux` (sum=15, product=120)
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4. Selfhost fix: pointer `->` field access; no bogus bounds check on `arr.data[len]` (Push)
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## Сесия 8 (match expression + error goldens)
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1. **Match expression lowering** (B.3): `pkLiteral`, `pkRange` (`a..b` / `a..=b`), enum tags, wildcard
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- Bugfix: literal arms were always-true (`else` branch) → `match 1 { 1=>10, 2=>20 }` returned 10 for all
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- `skMatch` now also lowers via `lowerMatch` (void result)
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2. Expanded `examples/pattern_matching.bux` (enums + classify ranges + string arms)
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3. **Error golden cases** (`tests/error_golden/`):
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- `parse_error` — incomplete `let x = ;`
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- `use_after_move` — `@[Checked]` + `own String`
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- `double_mut_borrow` — two `&mut` of same var
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4. `run.sh` normalize: absolute paths in "parse errors in …" lines
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## Сесия 9 (selfhost match — B.6 parity)
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1. **AST:** `MatchArm` linked list; `Pattern.patChild1/2` for ranges; `Expr.matchArms`
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2. **Parser:** full `parserParsePattern` / `parserParseMatchExpr` (was skip-arms stub)
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- literals, `_`, ident, `Enum::Variant` / `Enum::Variant(...)`, ranges
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- statement `match` → `skExpr` + `ekMatch`
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3. **Sema:** type-check subject + arms; propagate first-arm type to `expr.refType`
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4. **HIR lower:** `Lcx_LowerMatch` → alloca result + if-else stores (enum `.tag` / simple / literal / range)
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5. **Last-expr return:** `Lcx_LowerBlock` converts final `skExpr` into `return` (needed for `func F() -> T { match ... }`)
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6. Verified: `pattern_matching` via **buxc2**; simple enum + ranges; **selfhost-loop IDENTICAL ✓**
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## Сесия 10 (pattern bindings — B.3b)
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1. **Bootstrap sema:** `extractPatternBindings` resolves enum payload field types from variant decl
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2. **Bootstrap HIR:** `matchPatternBindings` → `alloca name; name = subject.data.Variant_i` before arm body
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3. **Match result type:** fall back to `currentFuncRetType` when arm bodies only use bindings
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4. **Multi-field enum layout:** positional `fields.len > 1` → nested struct in `_Data` union (no overlay)
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5. **Selfhost:** parse `patArgs` linked list; `Sema_BindPattern`; `Lcx_PatternBindings` in match arms
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6. **Example:** `pattern_matching.bux` uses `Option::Some(value) => value` (real binding, not `opt.data.Some_0`)
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7. Verified: bootstrap + **buxc2** + all examples + error goldens + **selfhost-loop IDENTICAL ✓**
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## Сесия 11 (empty `||` closures + match-as-expr — B.4b)
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1. **Bug:** `|| -> int { ... }` lexed as `tkPipePipe` (logical-or), not two `tkPipe` → empty-param closures failed to parse
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2. **Fix bootstrap:** primary `of tkPipePipe:` → zero-param `ekClosure`
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3. **Fix selfhost:** `parserParseEmptyClosure` for `tkPipePipe`
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4. **Match-as-expr:** expression-form match now skips newlines (same as statement form) → `let x = match n { ... }` works
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5. **Verified control-flow in closure body:** while/break, early return from loop, multi-return if-chain
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6. **Pattern bind reuse:** one alloca per binding name per function (`patternBoundNames`) so two matches can both use `v`
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7. **Selfhost match-as-expr:** let-init + binary operands expand yield blocks (`Lcx_IsMatchYield` / `__binop_N`)
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8. Examples: `closure_control.bux`, `match_let.bux`
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9. Verified: bootstrap + **buxc2** + all examples + error goldens + **selfhost-loop IDENTICAL ✓**
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## Сесия 12 (string interpolation selfhost — B.6)
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1. **Selfhost parser:** `parserParseStringInterp` — interleaved lit/expr parts in `callArgs`, nested fragment parse via `Lexer_Tokenize` + sub-parser
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2. **Selfhost sema/HIR:** `ekStringInterp` → `String_Concat` + `String_FromInt`/`FromBool`/`FromFloat`
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3. **Bootstrap fix:** `f"plain"` no longer keeps the `f` prefix in the literal; `\{`/`\}` preserved by lexer and unescaped by interp parser
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4. **Lexer:** `\{` / `\}` allowed (bootstrap + selfhost) so LanguageRef escape rules work
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5. **Compiler hygiene:** original dense `&&`/`||` in the large interp loop caused bootstrap OOM (~27 GB) when compiling `parser.bux` — rewrite with simpler control flow
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6. Example: `examples/string_interp.bux` (name/int/bool/plain/escaped braces)
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7. Verified: bootstrap + **buxc2** + all 41 examples + error goldens + **selfhost-loop IDENTICAL ✓**
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## Сесия 13 (LSP hover / go-to-def / outline — D.1)
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1. **Richer symbol index:** `func` signatures (`params` + `-> Ret`), `let`/`var`/`const` with types, `struct`/`enum`/`union`/`interface`/`type`/`module`
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2. **Skip comments/strings** during scan (no false `func` hits)
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3. **Hover:** markdown ```bux signature``` + kind; accurate word range
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4. **Go-to-definition:** current file + workspace index (scan `.bux` under rootUri)
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5. **Document symbols** (outline) via `textDocument/documentSymbol`
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6. **didChange** refreshes symbols immediately; **didSave/didOpen** still run `buxc check` diagnostics
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7. **Fix:** responses write to **stdout** (was writing to stdin stream → broken pipe)
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8. Version `bux-lsp` **0.2.0**; smoke-tested via JSON-RPC
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---
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## Сесия 14 (generic Iter map/filter/fold)
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1. **`Iter_Map<T,U>` / `Filter<T>` / `Fold<T,Acc>` / `Any` / `All` / `ForEach`** — fat `func` params + monomorphization
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2. **Int aliases** keep working: `Iter_MapInt` → `Iter_Map<int,int>`, …
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3. **Bootstrap fixes:**
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- call return type for local fat-func (`f: func(T)->U`) after mono (was always `int` → String map truncated pointers)
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- generic call `Foo<T>(…)` now type-checks args (closures get capture analysis)
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4. **Selfhost fixes:**
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- `Lcx_SubstituteType` recurses into `tekFunc` (was leaving `BuxFn_U_T`)
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- fat typedef emit covers cstr shapes + `#ifndef` guards
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5. Example: `examples/iter_generic.bux` (int↔String map, filter, fold, closures)
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6. Verified: bootstrap + **buxc2** + selfhost-loop IDENTICAL ✓
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---
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## Сесия 15 (struct/tuple patterns)
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1. **Tuple patterns:** `match t { (a, b) => a + b }` — bind `subject._0` / `._1`
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2. **Struct patterns:** `Point { x: px, y: py }` + shorthand `Point { x, y }`
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3. Bootstrap: `matchPatternBindings` for pkTuple/pkStruct; field types from struct decl; range registration of local tuple typedefs
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4. Selfhost: parse `()` / `Name { … }` patterns; `Sema_BindPattern` + `Lcx_PatternBindings` with Scope_Define
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5. Fix: operator-overload path treated `String_Eq(null, "")` as non-empty → crash on `a + b` after pattern bind
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6. Example: `examples/struct_tuple_pat.bux`
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7. Verified: bootstrap + **buxc2** + selfhost-loop IDENTICAL ✓
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---
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## Сесия 16 (match block arms + block expressions)
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1. **Block-as-expression:** `let r = { let x = 1; x + 2 }` — last skExpr is the value
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2. **Multi-stmt match arms:** `1 => { PrintLine("…"); let a = 10; a + 1 }`
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3. Bootstrap: `lowerBlock(..., asExpr)` promotes last expression; nested enum/struct pattern bindings
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4. Selfhost: parse `{ … }` as `ekBlock`; yield temps `__blk_N`; fix `IsMatchYield` null-strValue false positive; retTypeKind `-2` for expr blocks
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5. Nested: `Shape::Dot(Point { x, y })` works on bootstrap; selfhost covers struct/tuple/enum + block arms
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6. Example: `examples/match_block.bux`
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7. Verified: bootstrap + **buxc2** + selfhost-loop IDENTICAL ✓
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---
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## Сесия 17 (deeper nested patterns + multi-field enum layout)
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1. **Multi-field payload type:** nested struct `Enum_Variant_Payload` (suffix avoids clash with tag `Enum_Variant`)
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2. Bootstrap: full `resolveTypeExpr` for enum field types (tuples/pointers); sema synthetic field lookup on payload types; `data.Two.Two_0` construction
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3. LIR C backend: emit tuple typedefs **before** enums that embed them; topo deps for `*_Payload`
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4. Selfhost: enum variants parse full types (`parserParseType`) — fixes `Val((int,int))`; store `fieldTypeName*`; structs before enums (e.g. `Dot(Point)`)
|
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5. Patterns: `Pair::Two(a, b)`, `Box::Val((a, c))`, `Shape::Dot(Point { x, y })` + block arms
|
||
6. Example: `examples/nested_patterns.bux`
|
||
7. Verified: bootstrap + **buxc2** + selfhost-loop IDENTICAL ✓
|
||
|
||
---
|
||
|
||
## Сесия 18 (match arm guards — B.3c)
|
||
|
||
1. **Syntax:** `p if cond => body` (also after ranges: `1..10 if x % 2 == 0`)
|
||
2. **Parser fix (critical):** `isTypeArgListAhead` treated `x < 0` as generic when a later `x > 0` existed in another arm → infinite parse. Stop lookahead on `=>`, keywords, literals, arithmetic, comparisons.
|
||
3. **Sema:** bind inner pattern first; type-check guard as bool in arm scope
|
||
4. **HIR lower:** sequential `found` flag (no shared if-else DAG):
|
||
```
|
||
if (!found) { if (inner_cond) { binds; if (guard) { result = body; found = true; } } }
|
||
```
|
||
Bindings are in scope for the guard expression.
|
||
5. **Selfhost:** `pkGuarded` + `patGuardExpr`; same lower strategy; fix `return match {…}` to expand yield block before return
|
||
6. Example: `examples/match_guards.bux` (ident/literal/range/enum payload guards)
|
||
7. Verified: bootstrap + **buxc2** + all examples + error goldens + **selfhost-loop IDENTICAL ✓**
|
||
|
||
---
|
||
|
||
## Сесия 19 (generic HOF type inference)
|
||
|
||
1. **Bootstrap `inferTypeArgs`:** structural unify of param TypeExpr vs arg Type
|
||
- `*Iter<T>` / `*Array<T>` → extract T from pointee type args or mangled `Array_int`
|
||
- `func(T)->U` → bind T/U from function-value type (not whole func as T)
|
||
- bare `Acc` from init; multi-param `Iter_Fold<T,Acc>`
|
||
2. **Selfhost:** improved `Sema_InferGenericArgs` + return-type subst after inference
|
||
- Fix: `ekCast` must type-check operand (was skipping → no inference under `as`)
|
||
- HIR fallback mono from first *Array/*Iter arg when count=0
|
||
3. Works without explicit type args:
|
||
- `Array_Push(&nums, 1)`, `Array_Get`, `Array_Len`, `Array_Iter`
|
||
- `Iter_Map(&it, f)`, `Iter_Filter`, `Iter_Fold`, `Iter_Any` (int↔String)
|
||
4. Example: `examples/generic_infer_hof.bux`
|
||
5. Verified: bootstrap + **buxc2** + all examples + **selfhost-loop IDENTICAL ✓**
|
||
|
||
---
|
||
|
||
## Сесия 20 (LSP hover from real sema — D.1)
|
||
|
||
1. **`bux-lsp` 0.3.0** links bootstrap (`--path:../bootstrap`) and runs `analyzeFull` on open/save
|
||
2. **typeIndex:** global scope (stdlib + file) → hover signatures with real types
|
||
3. **File-local priority:** user decls override stdlib name collisions (`Max<T>` vs `Math.Max`)
|
||
4. **Locals:** walk function bodies for `let`/`var` with explicit type annotations
|
||
5. **didChange:** fast lightweight rescan; keeps previous typeIndex until save/hover refresh
|
||
6. Hover shows ```bux signature``` + `_kind_ · sema`
|
||
7. Smoke: `Main() -> int`, `PrintLine(String) -> void`, `Max<T>(a: T, b: T) -> T`
|
||
|
||
---
|
||
|
||
## Сесия 21 (pattern binding shadowing)
|
||
|
||
1. **Problem:** C/LIR function-scoped locals — nested `Some(n) => match … Some(n)` emitted store before `int n`, and `let v` + pattern `v` caused redeclaration.
|
||
2. **Bootstrap:** every pattern binding → unique C name `__pN_src` via `patternRenames` map; body/guard idents rewritten; **binds before body lower** inside `lowerMatch`.
|
||
3. **Selfhost:** same model — `Lcx_BindPatIdent` + `patMapFrom/To` rename table; arm-scoped push/pop of map.
|
||
4. Semantics: nested pattern name shadows correctly; outer `let v` survives after match that binds `v`.
|
||
5. Example: `examples/pattern_shadow.bux`
|
||
6. Verified: bootstrap + **buxc2** + all examples + **selfhost-loop IDENTICAL ✓**
|
||
|
||
---
|
||
|
||
## Сесия 22 (Ownership 2.0 — C.2 + C.4 + *p= fix)
|
||
|
||
1. **C.2 Exclusive &mut data-flow** (`@[Checked]`):
|
||
- Track long-lived let-bound borrows (`activeMutBorrows` / `activeSharedBorrows`)
|
||
- Reject: second `&mut x`, use/assign of `x` while mutably borrowed, `&x` while `&mut` live
|
||
- Call-site temps conflict with existing let-bound borrows
|
||
2. **C.4 Golden tests:**
|
||
- `tests/error_golden/exclusive_mut_let/`
|
||
- `tests/error_golden/use_while_mut_borrow/`
|
||
3. **Bugfix:** `*p = expr` now stores through the pointer (was assigning to a temp) — ownership examples finally mutate correctly
|
||
4. Example: `examples/ownership_checked.bux` (unchecked zero-cost + checked OK path)
|
||
5. Verified: 7 error goldens + borrow_test + all examples + selfhost-loop
|
||
|
||
---
|
||
|
||
## Сесия 23 (Ownership 2.0 — C.3 auto-drop early return / branches)
|
||
|
||
1. **Bootstrap auto-drop for `@[Drop]` + collections:**
|
||
- Parser: `@[Drop]` / `@[Release]` on structs and funcs (`declAttrs`)
|
||
- `autoDropFuncName` + monomorphize `Array_Drop`/`Free` (etc.) so stdlib links
|
||
- Inject `Type_Drop(&x)` on `let` via `deferStmts`
|
||
2. **Early return / multi-path:**
|
||
- Every `return` snapshots the full live defer stack (no clear-after-first-return)
|
||
- Materialize return value **before** Drop (`return a.id` is not use-after-drop)
|
||
- Move-on-return: skip Drop for a local returned by value (`return out`)
|
||
3. **Branch / loop scopes:**
|
||
- Bootstrap: `lowerBlock` scopes `deferStmts` — branch-local drops at block exit; siblings do not see each other
|
||
- Selfhost C backend: `CBE_EmitDefers` keeps stack for multi-return; `CBE_EmitAndPopDefersFrom` pops branch/loop locals after `if`/`while`/`loop`
|
||
4. **Selfhost fixes:** null-safe ret type; temp name counter; use function `retTypeName` for `__retdrop_N`
|
||
5. Example: `examples/drop_early_return.bux` (Early + Branched + Scoped → 5 drops)
|
||
6. Verified: bootstrap + **buxc2** drop tests, 7 error goldens, key examples, **selfhost-loop IDENTICAL ✓**
|
||
|
||
---
|
||
|
||
## Сесия 24 (tooling — D.2 fmt --check + D.3 test --filter)
|
||
|
||
1. **Bootstrap `bux fmt`** (`bootstrap/fmt.nim`):
|
||
- Indent-by-brace-depth formatter (parity with `src/fmt.bux`)
|
||
- `bux fmt [path...]` writes; `bux fmt --check` exits 1 if any file would change
|
||
- Collects single file or recursive `.bux` under directories
|
||
2. **Bootstrap `bux test --filter`**:
|
||
- `--filter <s>` / `--filter=<s>` — only run `tests/*.bux` whose name contains `s`
|
||
- Summary table (`PASS` / `FAIL[:code]`) + `Results: N passed, M failed, T total`
|
||
- Exit `0` all pass, `1` failures or no match
|
||
3. **Selfhost parity** (`src/cli.bux`, `src/fmt.bux`):
|
||
- `Fmt_WouldChange` / `Fmt_CheckFile`; `Cli_Fmt(dir, checkOnly)`
|
||
- `Cli_Test(dir, filter)` with summary + skip count; filter skips Main package run
|
||
4. **CI hooks:** `make fmt-check` smoke (clean→0, dirty→1); full-tree enforce deferred
|
||
until a one-shot format pass on `lib/`/`examples/`
|
||
5. **Idempotence fix:** drop trailing split-empty so re-format is a no-op
|
||
6. Verified: unit suite + `./buxc test --filter first _test_runner` + selfhost `buxc2`
|
||
fmt/test parity
|
||
|
||
---
|
||
|
||
## Сесия 25 (Ownership 2.0 — C.1 lifetime elision)
|
||
|
||
1. **Elision rules** in `@[Checked]` (`bootstrap/sema.nim`):
|
||
- Each elided input `&`/`&mut` → distinct `#elidedN`
|
||
- One input lifetime → assigned to elided return
|
||
- First param `self`/`Self` preferred when multiple inputs
|
||
- Multiple inputs + elided return → `lifetime elision failed` (need `'a`)
|
||
2. **Return checks:**
|
||
- `cannot return reference to local variable` (`return &local` / let-bound local ref)
|
||
- `no input reference to borrow from` (return ref with zero input refs)
|
||
- Explicit `'a` mismatch between return and value
|
||
3. **Body check for lifetime-only generics** (`func F<'a>(...)`) — no longer skipped
|
||
4. **Diagnostics hints** for elision / dangling / mismatch
|
||
5. **Tests:** 8 new borrow_test cases; goldens `return_local_ref`, `elision_multi_input`
|
||
6. **Example:** `examples/lifetime_elision.bux` (Identity / explicit / ViaLet / self)
|
||
7. LanguageRef + QUALITY_PLAN updated
|
||
8. Verified: borrow_test 24/24, 9 error goldens, example runs
|
||
|
||
## Сесия 26 (C.1 selfhost parity)
|
||
|
||
1. **Lexer** (`src/lexer.bux` + `tkLifetime=111`): `'a` vs char `'x'` (same heuristic as bootstrap)
|
||
2. **Parser:**
|
||
- `&'a T` / `&'a mut T` → `TypeExpr.refLifetime`
|
||
- `func F<'a, T>(…)` — lifetime params accepted and **skipped** for mono slots
|
||
3. **Sema** lifetime elision (fixed 8-slot maps, same rules as bootstrap):
|
||
- single-input elision, `self` preference, multi-input fail
|
||
- return-local / no-input-ref / explicit mismatch
|
||
- let-bound ref lifetime propagation
|
||
4. Fixed `checkFunc` else-branch that wiped `checkedFunc` when retType was void
|
||
5. Verified: `buxc2 run lifetime_elision` PASS; goldens on buxc2 show same errors;
|
||
bootstrap still green; **selfhost-loop** expected IDENTICAL
|
||
|
||
---
|
||
|
||
## Сесия 27 (tooling — D.4 bux doc + D.5 stdlib goldens)
|
||
|
||
1. **D.5 Stdlib goldens** (`tests/stdlib_golden/`):
|
||
- Packages: `array`, `string`, `collections` (Map/Set/Result/Option)
|
||
- `run.sh` builds via `buxc run` and matches expected PASS lines
|
||
- `make test-stdlib` wired into `make test`
|
||
2. **D.4 `bux doc`**:
|
||
- Bootstrap: `bootstrap/docgen.nim` — `///` + adjacent `/* */`
|
||
- Selfhost: `Cli_Doc` line scanner for `///`
|
||
- `bux doc [--out file] [path]` (default path `lib/`)
|
||
- `make docs` → `docs/api/stdlib.md`
|
||
3. **Stdlib docs:** `///` on Array / String / Test public helpers
|
||
4. Verified: `make test-stdlib`, `./buxc doc lib/Array.bux | head`, selfhost build
|
||
|
||
---
|
||
|
||
## Сесия 28 (LSP v0.4.0 — position-sensitive locals + inferred lets)
|
||
|
||
1. **`LocalBinding`** with scope range (`scopeStartLine`…`scopeEndLine`) per let/param
|
||
2. **Sema-backed inference** (`checkExprForLsp` / `resolveType`):
|
||
- `let x = 42` → hover `let x: int` · inferred
|
||
- `let s: String = "…"` → annotated, not inferred
|
||
- params: `param a: int` visible for whole function
|
||
3. **Position-sensitive** hover / go-to-def / completion (innermost scope wins on shadowing)
|
||
4. Nested scopes: if/while/for/match/block arms
|
||
5. Version **bux-lsp 0.4.0**; tests: `tools/test_lsp_locals.nim`, `tools/smoke_lsp_hover.sh`
|
||
6. Verified: hover shows `let sum: int · inferred`, `param a: int`, `let n: int · inferred`
|
||
|
||
---
|
||
|
||
## Сесия 29 (full-tree `bux fmt` + CI enforce)
|
||
|
||
1. **One-shot format** of `lib/` (33), `examples/` (23), `src/` (15), `tests/` (8), `apps/` (12)
|
||
2. **Idempotent:** second `--check` → 0 would reformat on all trees
|
||
3. **CI:** `make fmt-check` enforces full tree + dirty-path smoke (exit 1)
|
||
4. **`make fmt`** helper to reformat the same roots
|
||
5. Verified: `test-stdlib`, key examples, **selfhost + selfhost-loop IDENTICAL ✓**
|
||
|
||
---
|
||
|
||
## Сесия 30 (E.1 package registry + E.3 semver draft)
|
||
|
||
1. **Registry index** (`config/registry.toml`, `$BUX_REGISTRY`, `~/.bux/registry.toml`)
|
||
- `[[package]]` with `name` / `version` / `source` / `description`
|
||
- `file:` / `path:` (relative to index) or git URL
|
||
2. **CLI:** `bux search [q]`, `bux add <name>` resolves registry, `bux install` locks path/git
|
||
3. **Demo package:** `registry/packages/greet` (`Greet_Hello`, `Greet_Version`)
|
||
4. **Smoke:** `tools/smoke_registry.sh` / `make test-registry` — temp app outside tree
|
||
5. **Semver policy:** `docs/SEMVER.md` (0.x vs 1.0, registry version match)
|
||
6. Packages.md updated
|
||
|
||
---
|
||
|
||
## Сесия 31 (E.1b HTTP registry + E.2 apps smoke + E.5 micro-bench)
|
||
|
||
1. **HTTP registry index** (`bootstrap/registry.nim`):
|
||
- `$BUX_REGISTRY` accepts `http://` / `https://` URLs
|
||
- Fetch via `curl` (fallback `wget`) → `~/.bux/cache/registry_http.toml`
|
||
- `BUX_REGISTRY_REFRESH=1` forces re-download; cache keyed by URL meta file
|
||
- `bux search` shows URL + cached path; clear errors on fetch failure
|
||
2. **Smoke:** `tools/smoke_registry.sh` — local path flow **+** python `http.server` HTTP search
|
||
3. **E.2 apps smoke** (`tools/smoke_apps.sh` / `make test-apps`):
|
||
- Build `simpledb`, `jwt-pitbul`, `nexus`, `boko-framework`
|
||
- simpledb set/get/has/count/del; jwt-pitbul sign/verify/decode
|
||
- Removed obsolete JWT-disable workaround from simpledb README
|
||
4. **E.5 micro-benchmarks** (`benches/micro`, `benches/c`, `make bench`):
|
||
- Bux: `int_loop`, `fib30`, `string_concat`, `array_push`
|
||
- C refs (`gcc -O2`): `fib30`, `int_loop` for relative comparison
|
||
5. Docs: `Packages.md`, `config/registry.toml`, `benches/README.md`
|
||
6. Verified: `make test-registry`, `tools/smoke_apps.sh`, `tools/bench.sh`
|
||
|
||
---
|
||
|
||
## Сесия 32 (E.5 nexus throughput + language twins)
|
||
|
||
1. **Nexus env config** (`apps/nexus/src/Main.bux`):
|
||
- `NEXUS_PORT`, `NEXUS_WORKERS`, `NEXUS_BIND`, `NEXUS_PUBLIC`
|
||
2. **Throughput harness** (`tools/bench_nexus.sh` / `make bench-nexus`):
|
||
- Start nexus on `:18080`, `wrk -t4 -c64 -d5s` → `/api/health`
|
||
- Sample (this machine): **~44.5k req/s**, p50 ~0.94 ms (Connection: close)
|
||
3. **Language twins** for micro kernels:
|
||
- `benches/nim/` fib + int_loop (`nim c -d:release`)
|
||
- `benches/zig/` sources (built when `zig` is on PATH)
|
||
- `make bench` runs Bux + C + Nim (+ Zig if present)
|
||
4. Docs: `benches/README.md`, nexus README, BuildAndTest
|
||
5. Verified: `tools/bench.sh`, `tools/bench_nexus.sh`
|
||
|
||
---
|
||
|
||
## Сесия 33 (E.4 Debugger / DWARF basics)
|
||
|
||
1. **Source map:** HIR `loc` → LIR `locLine`/`locFile` on every stmt/expr (`setSourceLoc`)
|
||
2. **C backend:** emit `#line N "path.bux"` when location changes; force map at each func entry
|
||
3. **Build modes:**
|
||
- default: `cc -O0 -g` + `#line` maps
|
||
- `--release` / `build --release`: `-O2 -DNDEBUG`, no `#line`, no `-g`
|
||
- `BUX_CFLAGS` appended for custom flags
|
||
4. **Smoke:** `tools/smoke_dwarf.sh` / `make test-dwarf`
|
||
- `#line` for stdlib + user `Main.bux`
|
||
- `.debug_info` present in debug binary
|
||
- `gdb list Main` shows real Bux source
|
||
5. Verified: smoke PASS; `gdb list Main` → hello.bux body
|
||
|
||
---
|
||
|
||
## Сесия 34 (LSP refs/rename + CI wiring)
|
||
|
||
1. **bux-lsp 0.5.0** (`tools/lsp_server.nim`):
|
||
- `textDocument/references` — scoped locals (same binding via `lookupLocalAt`) + workspace globals
|
||
- `textDocument/prepareRename` + `rename` → `WorkspaceEdit.changes`
|
||
- Ident scan skips strings/comments; keyword rename rejected
|
||
2. **Smoke:** `tools/smoke_lsp_rename.sh` (sum→total ≥2 edits); wired into `make test-lsp`
|
||
3. **CI:** `make test` now runs `test-registry` + `test-dwarf` + `test-apps` after stdlib goldens
|
||
4. Verified: rename/hover smokes PASS
|
||
|
||
---
|
||
|
||
## Сесия 35 (Nexus HTTP/1.1 keep-alive)
|
||
|
||
1. **Server loop** (`apps/nexus/src/Server.bux`):
|
||
- `HandleConnection` serves up to 1000 requests per TCP fd
|
||
- `BuildResponse(..., keepAlive)` → `Connection: keep-alive` + `Keep-Alive:` or `close`
|
||
2. **Policy** (`RawRequest_WantsKeepAlive` on raw bytes):
|
||
- HTTP/1.1 default keep-alive; `Connection: close` forces close
|
||
- HTTP/1.0 needs explicit keep-alive
|
||
- (Avoided fragile `Array<HeaderEntry>` walk — keys corrupted under for-in/Get)
|
||
3. **Bench:** ~**81k req/s** vs ~45k with close-only (`wrk -t4 -c64 -d5s /api/health`)
|
||
4. Version banner **0.3.0**; README / benches notes updated
|
||
5. Verified: curl headers + `make bench-nexus`
|
||
|
||
---
|
||
|
||
## Сесия 36 (header ownership + selfhost flags + LSP workspace/symbol)
|
||
|
||
1. **Root cause (Nexus headers UAF):** auto-drop of local `headers` after
|
||
shallow-copy into `HttpRequest` / `ParseResult` freed the buffer while still
|
||
referenced. Not Array ABI — **move-out-of-field not tracked**.
|
||
2. **Fix** (`apps/nexus/src/Parser.bux`): after embedding, zero
|
||
`headers.data/len/cap` so auto-drop is a no-op; `Request_WantsKeepAlive`
|
||
again uses `RequestHeader_Get` safely. Bench still ~76–80k RPS.
|
||
3. **Selfhost compile flags** (`src/cli.bux`):
|
||
- default **`-O0 -g`** (was always `-O2`)
|
||
- `--release` → **`-O2 -DNDEBUG`** (was `-O3 -flto`)
|
||
- `BUX_CFLAGS` appended via `bux_getenv`
|
||
- `#line` maps remain bootstrap-only (selfhost C backend has no LIR #line yet)
|
||
4. **LSP 0.6.0:** `workspace/symbol` over open docs + workspace index (cap 200);
|
||
`tools/smoke_lsp_workspace.sh` + `make test-lsp`
|
||
5. Verified: nexus keep-alive + header Get; `make lsp` + workspace smoke
|
||
|
||
---
|
||
|
||
## Сесия 37 (compiler: field-move skip auto-Drop)
|
||
|
||
1. **Root cause (formal):** auto-Drop of locals that were **moved by value** into
|
||
a struct field / let / return still ran → UAF (Nexus `headers` in `HttpRequest`).
|
||
2. **`bootstrap/hir_lower.nim`:**
|
||
- `movedOutLocals: HashSet[string]`
|
||
- `markMovedOutFromAst` on `ekStructInit` fields, `let` init, `return` value
|
||
- `shouldSkipDrop` at return / block exit / function tail
|
||
3. **Nexus:** removed zeroing workaround; error path still Drops; success path
|
||
transfers ownership; `HandleConnection` Drops `req.headers` after response
|
||
4. **Example:** `examples/move_field.bux` (Array into `Box { items }`)
|
||
5. Verified: move_field PASS; ParseRequest C has Drop only on error path;
|
||
`bench-nexus` ~88k RPS; drop_early_return still 5 drops
|
||
|
||
---
|
||
|
||
## Сесия 38 (selfhost field-move + #line)
|
||
|
||
1. **Field-move Drop** (`src/c_backend.bux`):
|
||
- `CBE_MarkMovedFromNode` on `hStructInit` / return values (nested fields)
|
||
- Already skipped Drop via `CBE_IsMoved` in defer emit
|
||
2. **Struct emit fix** (`src/hir_lower.bux`):
|
||
- Field types `Array<int>` → `Array_int` (etc.) so parent structs are not
|
||
skipped as “generic” (was incomplete `typedef struct Box Box` only)
|
||
3. **#line maps** (selfhost C backend):
|
||
- Emit `#line N "file"` on statements when `node.line > 0`
|
||
- `BUX_DEBUG_FILE` sets the path; `BUX_NO_LINE=1` disables
|
||
4. Verified: selfhost `move_field` PASS; Make() has **no** `Array_Drop(&items)`
|
||
after field move; `#line` points at `.bux` sources
|
||
|
||
---
|
||
|
||
## Сесия 39 (LSP 0.7 deeper rename)
|
||
|
||
1. **Member index** in `analyzeFile`:
|
||
- struct/union/interface fields (`name: Type`)
|
||
- enum variants (`Name` / `Name(...)`)
|
||
2. **Access classification** for each hit:
|
||
- bare / `.member` / `::Variant` / `name:` field-init
|
||
3. **Rename targets**:
|
||
- **local** — same binding only (shadowing-safe)
|
||
- **member** — decl + `.x` + `::Red` + `{ x: }` — **not** bare locals named `x`
|
||
- **global** — bare + `::` paths; skips `.member` false positives
|
||
4. Smoke: `tools/smoke_lsp_rename_deep.sh` (x→px ≥3, Red→Crimson ≥2, local x→xx =2)
|
||
5. Version **bux-lsp 0.7.0**; wired into `make test-lsp`
|
||
|
||
---
|
||
|
||
## Сесия 40 (LSP 0.8 call hierarchy)
|
||
|
||
1. **Providers:**
|
||
- `textDocument/prepareCallHierarchy`
|
||
- `callHierarchy/incomingCalls` — who calls F
|
||
- `callHierarchy/outgoingCalls` — what F calls
|
||
2. **Graph:** textual scan of known `func` symbols + `Name(` call sites;
|
||
enclosing function via nearest prior `func` decl line
|
||
3. Skips the declaration itself; workspace disk scan for other `.bux` files
|
||
4. Smoke: `tools/smoke_lsp_call_hierarchy.sh` (Add ← Compute; Compute → Add/Mul)
|
||
5. Version **bux-lsp 0.8.0**; `make test-lsp`
|
||
|
||
---
|
||
|
||
## Сесия 41 (selfhost multi-file #line paths)
|
||
|
||
1. **`Decl.sourceFile`** stamped when parsing/merging each `.bux` file
|
||
(`Cli_StampSourceFile` / `Cli_MergeFileInto` / project `src/` loop)
|
||
2. **`HirFunc.sourceFile`** copied in `Lcx_LowerFunc`
|
||
3. **C backend:** before each function, set `currentFile` from `sourceFile`
|
||
and emit `#line 1 "path"` + per-stmt `#line N "path"`
|
||
4. **No env required** — stdlib + user multi-file paths appear automatically
|
||
(`lib/Fs.bux`, `./src/Util.bux`, `./src/Main.bux`, …)
|
||
5. Overrides: `BUX_DEBUG_FILE` (force one path), `BUX_NO_LINE=1` (disable)
|
||
6. Verified: multi-file project runs; `#line` paths distinct per source
|
||
|
||
---
|
||
|
||
## Сесия 42 (selfhost CI smoke)
|
||
|
||
1. **`tools/smoke_selfhost.sh`:**
|
||
- build/use `buxc2` (`make selfhost`)
|
||
- **move_field**: run PASS + no `Array_Drop(&items)` after field move
|
||
- **multi-file #line**: Util.bux + Main.bux + `lib/*.bux` paths in `main.c`
|
||
2. **`make test-selfhost-smoke`** depends on `selfhost`
|
||
3. Wired into default **`make test`**
|
||
4. Verified: smoke script PASS
|
||
|
||
---
|
||
|
||
## Сесия 43 (LSP 0.9 method call hierarchy)
|
||
|
||
1. **Index methods** in `analyzeFile`:
|
||
- Track `extend Type` / `impl Type` brace body
|
||
- `func` inside → kind `method`, container `Type`, detail `Type.func …`
|
||
2. **Call graph** includes methods as callables
|
||
- `.Method(` sites (iaDot) + free `Func(` calls
|
||
- CallHierarchyItem: SymbolKind.Method (6), display `Type.Method`
|
||
- `data` field keeps bare name for graph match
|
||
3. Smoke: `tools/smoke_lsp_method_hierarchy.sh`
|
||
- `Scale` → `Len`; `Main` → `Scale`; prepare on method
|
||
4. Version **bux-lsp 0.9.0**; `make test-lsp`
|
||
|
||
---
|
||
|
||
## Сесия 44 (LSP 0.10 method + type + receiver rename)
|
||
|
||
1. **`rtkMethod`**: rename method decl + `.Method(` + bare `Method(`
|
||
- (previous global path skipped `iaDot` → broke method rename)
|
||
2. **Type rename** (`isType`): `struct`/`extend Type`/`self: Type`/ctors; skip `.field`
|
||
3. **`self` receiver**: synthetic local when sema omits method params; clip to
|
||
enclosing `func` body via textual bounds (sibling methods safe)
|
||
4. Smoke: `tools/smoke_lsp_rename_method.sh`
|
||
- Len→Length ≥2, Point→Vec2 ≥4, self→this =3 (one method only)
|
||
5. Version **bux-lsp 0.10.0**; `make test-lsp`
|
||
|
||
---
|
||
|
||
## Сесия 45 (LSP 0.11 interface dispatch hierarchy)
|
||
|
||
1. **Index:**
|
||
- `interface I { func M… }` → iface methods + symbol
|
||
- `extend Type for I` → `impls` relation + implementor methods
|
||
2. **Call hierarchy:**
|
||
- prepare on interface method → item with `data: "I#M"`, kind Interface
|
||
- **outgoing** on iface method → implementor methods (dispatch targets)
|
||
- **incoming** on iface method → callers of `.M(`
|
||
3. Smoke: `tools/smoke_lsp_iface_hierarchy.sh`
|
||
- Drawable.Draw → Circle implementor; Render → Draw
|
||
4. Version **bux-lsp 0.11.0**
|
||
|
||
---
|
||
|
||
## Сесия 46 (LSP 0.12 module-path segment rename)
|
||
|
||
1. **Index** `import A::B::C` / `import A::B::{…}` path segments (`PathSegInfo`)
|
||
2. **`rtkPathSeg` rename** with left-prefix match:
|
||
- `Std::Io` → only segments under prefix `Std` (not `Foo::Io`, not bare `Io`)
|
||
- path head `Std` only when followed by `::` (not bare locals)
|
||
- does not clobber enum `Color::Red` (member path still wins on variants)
|
||
3. Last import segment that is also a known symbol falls through to global rename
|
||
4. Workspace scan for unopened `.bux` files
|
||
5. Smoke: `tools/smoke_lsp_rename_path.sh`
|
||
- Io→Net ≥2 (Main+Util), not Foo::Io; Std→Core ≥2; Red→Crimson ≥2
|
||
6. Version **bux-lsp 0.12.0**; `make test-lsp`
|
||
|
||
---
|
||
|
||
## Сесия 47 (HirNode-level sourceFile / mid-function #line)
|
||
|
||
1. **`HirNode.sourceFile`** — per-statement path for `#line` (rare multi-file spans)
|
||
2. **`Lcx_StampSourceFile`**: after lowering a func/closure body, fill empty
|
||
node paths from `Decl.sourceFile` / `HirFunc.sourceFile` (keeps pre-set paths)
|
||
3. **`LowerCtx.currentSourceFile`** + closures inherit enclosing file
|
||
4. **C backend:** `lastDebugFile` + prefer `node.sourceFile` over func
|
||
`currentFile`; re-emit `#line` when **line or file** changes mid-function
|
||
5. `BUX_DEBUG_FILE` truly forces one path (no longer overwritten by per-func)
|
||
6. Smoke: `tools/smoke_selfhost.sh` — Util_Double body `#line` → Util.bux only
|
||
7. `make test-selfhost-smoke` / rebuild selfhost
|
||
|
||
---
|
||
|
||
## Сесия 48 (optional CI: selfhost-loop)
|
||
|
||
1. **`tools/selfhost_loop.sh`**: bootstrap determinism (buxc × 2)
|
||
- path-normalized `#line` C compare (abs path / build-dir noise stripped)
|
||
- stripped ELF compare; **fails** on real C or ELF mismatch
|
||
2. **Lexer:** `maxTokens` 32k → 131k (hir_lower was at the ceiling for buxc2 parse)
|
||
3. **Optional fixed-point** `BUX_SELFHOST_FIXED_POINT=1`: buxc2 → buxc3
|
||
- experimental; selfhost still diverges on full compiler C emit
|
||
4. **GitHub Actions** `.github/workflows/selfhost-loop.yml`
|
||
- `workflow_dispatch` (+ optional fixed_point input)
|
||
- weekly cron (Sunday 06:00 UTC)
|
||
- push to `main` when `src/` / `lib/` / loop script change
|
||
- **not** on every PR / not in default `make test`
|
||
5. Verified: `make selfhost-loop` PASS (determinism)
|
||
|
||
---
|
||
|
||
## Сесия 49 (LSP 0.13 textDocument/implementation)
|
||
|
||
1. **`implementationProvider`** + `textDocument/implementation`
|
||
2. **Interface type** under cursor → locations of implementing types
|
||
(`extend Type for Iface` / type decl)
|
||
3. **Interface method** under cursor → implementor method decls
|
||
(reuses `collectImplementorFuncs` + `workspaceImpls`)
|
||
4. Also: call-site / shared method name matching known iface methods;
|
||
implementor method → sibling implementors of same iface method
|
||
5. Smoke: `tools/smoke_lsp_implementation.sh`
|
||
- Drawable → ≥2 types; Draw → ≥2 methods (Circle + Square)
|
||
6. Version **bux-lsp 0.13.0**; `make test-lsp`
|
||
|
||
---
|
||
|
||
## Сесия 50 (LSP 0.14 workspace import path index)
|
||
|
||
1. **`workspaceImportPaths`**: URI → full import paths (`["Std","Io"]`)
|
||
2. **`registerWorkspaceImports`** at end of `analyzeFile` (scan + open/edit)
|
||
3. **`isKnownImportPathPrefix`** uses workspace index first — no open doc required
|
||
4. Path segment snapshot fix (no shared seq mutation across segments)
|
||
5. Smoke: `tools/smoke_lsp_workspace_imports.sh`
|
||
- only Main opened; Util closed on disk via `rootUri` scan
|
||
- Io→Net ≥2 edits including `Util.bux` in WorkspaceEdit
|
||
6. Version **bux-lsp 0.14.0**; `make test-lsp`
|
||
|
||
---
|
||
|
||
## Сесия 51 (Expr/Stmt sourceFile for multi-file / macros)
|
||
|
||
1. **`Expr.sourceFile` / `Stmt.sourceFile` / `Block.sourceFile`**
|
||
2. **`Ast_StampExprFile` / `Ast_StampStmtFile` / `Ast_StampBlockFile` /
|
||
`Ast_StampPatternFile`** — fill empty slots only (grafted nodes keep path)
|
||
3. **`Cli_StampSourceFile`** stamps decl body + const init + default params
|
||
4. **Lower:** `Lcx_SetNodeLoc` / `Lcx_SourceFileFor` prefer AST file, else
|
||
`currentSourceFile`; `Lcx_StampSourceFile` still fills empties at func end
|
||
5. Smoke: Main body `#line` → Main.bux only (no Util leak); Util isolation kept
|
||
6. Rebuild selfhost; `make test-selfhost-smoke`
|
||
|
||
---
|
||
|
||
## Сесия 52 (selfhost fixed-point buxc2→buxc3→buxc4 green)
|
||
|
||
1. **Sema global scope:** allocate via `Scope_New` (8192), not 1024 — heap
|
||
overflow on ~1200 decls crashed buxc2 in `Scope_Lookup`
|
||
2. **HIR buffers:** funcs 512→4096, structs 64→512, enums/consts/gen* raised
|
||
3. **`CBE_FuncParam`:** avoid nested `.paramN.name` on `*HirParam` (wrong `.` vs `->`)
|
||
4. **Adapters:** `__fat_env` not `env` (no clash with `CtfeEnv* env`)
|
||
5. **Unary `!`:** parenthesize operand so `!(a && b)` ≠ `!a && b`
|
||
6. **Fat typedef skip-void:** rewritten without nested `!` for older gens
|
||
7. **Fixed-point loop:** compare gen2 vs gen3 (same CBE), not bootstrap vs selfhost
|
||
8. Verified: `BUX_SELFHOST_FIXED_POINT=1 make selfhost-loop` — C+ELF IDENTICAL
|
||
|
||
---
|
||
|
||
## Сесия 53 (main CI workflow — `make test`)
|
||
|
||
1. **`.github/workflows/ci.yml`**
|
||
- triggers: `pull_request`, `push` to `main`, `workflow_dispatch`
|
||
- job: install Nim 2.0.x + gcc/make/ssl → **`make test`**
|
||
- timeout 90m; concurrency cancel-in-progress
|
||
- failure artifact: selfhost `main.c` (best-effort)
|
||
2. **selfhost-loop.yml** remains optional (not on every PR)
|
||
3. Docs: README / BuildAndTest / QUALITY_PLAN point to ci vs selfhost-loop
|
||
|
||
---
|
||
|
||
## Сесия 54 (LSP 0.15 type hierarchy)
|
||
|
||
1. **`typeHierarchyProvider`** + prepare / supertypes / subtypes
|
||
2. **prepare** on `struct` / `enum` / `interface` / `type` → TypeHierarchyItem
|
||
3. **subtypes** of interface → types with `extend T for I` (Circle, Square)
|
||
4. **supertypes** of type → interfaces it implements
|
||
5. Uses open-doc `impls` + `workspaceImpls` + symbol resolve
|
||
6. Smoke: `tools/smoke_lsp_type_hierarchy.sh`
|
||
7. Version **bux-lsp 0.15.0**; `make test-lsp`
|
||
|
||
---
|
||
|
||
## Сесия 55 (macro / quote hygiene foundation)
|
||
|
||
1. **AST graft API** (force overwrite): `Ast_GraftExpr/Stmt/Block/PatternFile`
|
||
2. **Clone**: `Ast_CloneExpr/Stmt/Block/Pattern` (+ list / match arms)
|
||
3. **Quote policies**:
|
||
- `Ast_QuoteDefSite` — clone, keep `sourceFile` (macro body / template)
|
||
- `Ast_QuoteCallSite` / `Ast_QuoteStmtCallSite` — clone + graft call-site path
|
||
4. **Helpers**: `Ast_SetExprLoc` / `Ast_ExprSourceFile`
|
||
5. **HIR**: `Lcx_GraftSourceFile`; mono instances force-graft `genDecl.sourceFile`
|
||
6. Smoke: `tools/smoke_graft_hygiene.sh` (Array mono → lib; Main no leak)
|
||
7. Wired into `make test-selfhost-smoke`
|
||
|
||
---
|
||
|
||
## Сесия 56 (CBE binary parentheses — C precedence safety)
|
||
|
||
1. **Bug (selfhost):** tree HIR→C emitted nested binaries **without** parens.
|
||
- `return (a + b) * c` → C `return a + b * c;` → **7** instead of **9**
|
||
- `return (a - b) / c` → `a - b / c` → **8** instead of **3**
|
||
2. **Fix selfhost** (`src/c_backend.bux`):
|
||
- `hBinary` always emits `(left op right)` (same policy as bootstrap HIR CBE)
|
||
- Unary operand parens (session 52) kept: `!(a && b)`
|
||
3. **Bootstrap LIR** (`bootstrap/lir_c_backend.nim`): defensive parens on
|
||
arith/bitwise and unary `!`/`-`/`~` (operands are temps today; future-proof)
|
||
4. **Example:** `examples/c_precedence.bux` — MulSum/SubDiv/ShiftSum/Mix
|
||
5. **Smoke:** `tools/smoke_selfhost.sh` checks run values **and** generated C
|
||
contains `(a + b) * c` / `(a - b) / c`
|
||
6. Wired into `EXAMPLES` + `make test-selfhost-smoke`
|
||
7. Verified: bootstrap + **buxc2** → `9/3/6/7` + `PASS c_precedence`;
|
||
smoke PASS
|
||
|
||
---
|
||
|
||
## Сесия 57 (CI split jobs + macOS smoke)
|
||
|
||
1. **`.github/workflows/ci.yml`** — no longer one 90m monolithic `make test`:
|
||
- **`build`** (ubuntu): `make build` → artifact `buxc-linux`
|
||
- **Parallel** (reuse artifact, `BUX_SKIP_BUILD=1`):
|
||
- `unit` — `fmt-check` + `test-unit`
|
||
- `examples` — `test-examples`
|
||
- `goldens` — errors + stdlib + registry + dwarf
|
||
- `apps` — `test-apps`
|
||
- `selfhost` — `test-selfhost-smoke`
|
||
- **`macos`**: Homebrew OpenSSL + rebuild + fmt/unit/examples
|
||
- **`ci-gate`**: single required status (all of the above must succeed)
|
||
2. **Makefile:**
|
||
- `test-unit` extracted from `test`
|
||
- `ensure-buxc` + `BUX_SKIP_BUILD=1` for CI artifact reuse
|
||
- `$(OUT)` rebuild only when `bootstrap/*.nim` changes
|
||
- portable examples runner (optional `timeout`; macOS without coreutils OK)
|
||
3. **macOS / non-GNU ld:**
|
||
- bootstrap: `-Wl,--build-id=none` only `when defined(linux)`
|
||
- selfhost: `bux_cc_ld_stable()` in `rt/runtime.c` (Linux-only build-id)
|
||
- CI sets `BUX_CFLAGS=-I… -L…` for Homebrew `libcrypto`
|
||
4. Docs: BuildAndTest + README CI table; local `make test` still full sequential
|
||
5. Verified locally: `BUX_SKIP_BUILD=1 make fmt-check test-unit test-errors`
|
||
|
||
---
|
||
|
||
## Сесия 58 (LSP 0.16 workspace type hierarchy index)
|
||
|
||
1. **Gap:** type hierarchy subtypes/supertypes only saw open-doc `impls` or
|
||
method-keyed `workspaceImpls`. Closed files with **empty**
|
||
`extend T for I {}` (no methods) returned **[]**.
|
||
2. **`workspaceTypeRels`** (`tools/lsp_server.nim`):
|
||
- URI → `seq[(typeName, iface, line)]` from every `analyzeFile`
|
||
- `registerWorkspaceTypeRels` replaces per-URI (re-open / re-scan safe)
|
||
- filled on `scanWorkspace` + open/edit — **no open doc required**
|
||
3. **Consumers:**
|
||
- `collectSubtypeItems` / `collectSupertypeItems` prefer type-rel index
|
||
- `collectTypeImplementorLocs` (textDocument/implementation) same
|
||
4. **Smoke:** `tools/smoke_lsp_type_hierarchy_ws.sh`
|
||
- open only Main; Drawable.bux + Shapes.bux closed
|
||
- empty extends → Drawable subtypes Circle+Square; Circle supers Drawable+Named
|
||
5. Version **bux-lsp 0.16.0**; wired into `make test-lsp`
|
||
6. Verified: single-file hierarchy + workspace smoke PASS
|
||
|
||
---
|
||
|
||
## Сесия 59 (user-facing `macro!` / `quote!` — declarative MVP)
|
||
|
||
1. **Syntax (bootstrap):**
|
||
- `macro! name { ($x:expr, …) => { template } }`
|
||
- Invoke: `name!(args…)` — distinct from unwrap `expr!` via following `(`
|
||
- Built-in **`quote!(e)`** — identity expand + call-site graft
|
||
2. **Lexer:** keyword `macro`; `$ident` fragment tokens (`$x`)
|
||
3. **AST:** `dkMacro` + `MacroRule`/`MacroFragment`; `ekMacroCall`
|
||
4. **Expansion** (`bootstrap/macroexpand.nim`) before sema:
|
||
- Collect macro decls; match rule by arity
|
||
- Deep clone + substitute `$frags` + graft call-site `SourceLocation`
|
||
- Nested expand (depth ≤ 32)
|
||
5. **CLI:** `build` / `check` / `run` call `expandMacros` after merge
|
||
6. **Example:** `examples/macro_twice.bux` → 42 / 42 / 43 + PASS
|
||
7. **LanguageRef:** Macros section (limits documented)
|
||
8. Verified: `./buxc run macro_twice`; hello + lexer/parser tests green
|
||
9. **Not yet:** selfhost expand parity; `$(…)*` repetition; more frag kinds
|
||
|
||
---
|
||
|
||
## Сесия 60 (selfhost `macro!` / `quote!` expand parity)
|
||
|
||
1. **Lexer/token:** `tkMacro`, keyword `macro`, `$ident` fragments
|
||
2. **AST:** `dkMacro` (rules in `childDecl1` chain), `ekMacroCall`
|
||
3. **Parser:** `macro! name { ($x:expr) => {…} }`, invoke `name!(…)`
|
||
4. **`src/macroexpand.bux`:**
|
||
- collect macros → match rule by arity → clone+subst `$frags`
|
||
- call-site graft (line/col/`sourceFile`)
|
||
- built-in `quote!(e)`
|
||
5. **CLI:** expand before sema (project / check / compile paths)
|
||
6. **Sema fixes** (needed for block templates):
|
||
- `ekBlock` value = last `skExpr` type (was always `tyVoid`)
|
||
- `let x: T = …` sets `sym.typeKind` from annotation (not only init)
|
||
7. **Smoke:** `tools/smoke_selfhost.sh` runs `examples/macro_twice.bux` via buxc2
|
||
8. Verified: **buxc2** + bootstrap → `42/42/43` + `PASS macro_twice`
|
||
|
||
---
|
||
|
||
## Сесия 61 (macro `$(…)*` + `ident`/`tt` fragments)
|
||
|
||
1. **Fragment kinds:** `expr` | `ident` | `tt` (tt ≡ expr for now)
|
||
2. **Pattern rep (trailing):** `$( $x:expr ),*` / `$( $x:expr )*`
|
||
3. **Template rep:** `$( stmts… )*` → `skMacroRep`, expanded per list item
|
||
4. **Lexer:** bare `tkDollar` for `$(…)` (vs `$ident`)
|
||
5. **Bootstrap** `macroexpand.nim`: list bindings, match rules, gensym locals
|
||
6. **Selfhost** parity: `useNames` encodes kinds/`rep:`, `Subst_Block_Flat`, gensym
|
||
7. **Sema:** block-as-expr checks last value **inside** child scope (no UAF of locals)
|
||
8. **Example:** `examples/macro_repeat.bux` — sum_n / empty / call0 / id_tt
|
||
9. Verified: bootstrap + **buxc2** → `6/0/42/7` + `PASS macro_repeat`
|
||
|
||
---
|
||
|
||
## Сесия 62 (C.4 `@[Release]` polish + Checked docs)
|
||
|
||
1. **Three-tier model** documented in LanguageRef:
|
||
- default (no checks) → `@[Checked]` → `@[Release]` (force off)
|
||
2. **Bootstrap:** `releaseFunc`; `checkedFunc = Checked ∧ ¬Release`
|
||
3. **Selfhost:** same rule; **stacked attrs** loop (`@[Checked]` + `@[Release]`)
|
||
4. **Parser:** multi-line stacked `@[…]` (skip newlines between attrs)
|
||
5. **Tests** (`borrow_test`): Release alone; Checked+Release wins; Checked still errors
|
||
6. **Example:** `examples/ownership_release.bux` — Unchecked / Safe / Hot / HotDangle
|
||
7. Verified: 27/27 borrow tests; example PASS
|
||
|
||
---
|
||
|
||
## Сесия 63 (nested `$(…)*` / multi-rep / compound zip)
|
||
|
||
1. **Bootstrap** (`macroexpand.nim` + parser):
|
||
- Compound rep: `$( $a:expr, $b:expr ),*` → parallel lists, zip in template
|
||
- Multi-rep: `$(…)* ; $(…)*` with call-site `;` groups (`exprMacroGroupLens`)
|
||
- Nested template: outer binds list → inner `$(…)*` expands once (no list names left)
|
||
- `MacroFragment.names` / `.kinds` for multi-name frags
|
||
2. **Selfhost** parity (`src/macroexpand.bux`, `parser.bux`):
|
||
- Two named rep lists + zip in `Subst_Block_Flat`
|
||
- Kinds encoding `rep:expr+expr,@2` / multi-seg `rep:…;rep:…`
|
||
- Macro call `;` groups → `genericCallee` group-length string
|
||
3. **Example:** `examples/macro_nested.bux`
|
||
- `add_pairs` → 33, `sum_groups` → 63, `double_each_sum` → 14, `named_sum` → 18
|
||
4. **LanguageRef:** multi-rep / compound / nested docs; limits updated
|
||
5. Verified: bootstrap + **buxc2** → PASS macro_nested / macro_repeat / macro_twice
|
||
|
||
---
|
||
|
||
## Сесия 64 (CI Nim cache + faster macOS)
|
||
|
||
1. **Nim pin + toolchain cache:**
|
||
- `NIM_VERSION: 2.0.8` (stable cache keys; was `2.0.x`)
|
||
- Cache `.nim_runtime` on `build` / `unit` / `macos` / `selfhost-loop`
|
||
- Skip `setup-nim-action` on cache hit; restore `PATH` only
|
||
2. **`nimcache` project-local:**
|
||
- `Makefile` `NIMFLAGS ?= --nimcache:nimcache` for bootstrap + unit tests
|
||
- `actions/cache` keyed on `bootstrap/**/*.nim` (+ tests for unit)
|
||
3. **Leaner macOS job:**
|
||
- Runner `macos-14`; timeout 35m
|
||
- `make test-unit` + `make test-examples-smoke` (not full EXAMPLES / not fmt)
|
||
- `EXAMPLES_SMOKE`: hello, ownership*, strings, map, c_precedence, macro_*
|
||
- OpenSSL: install only if missing (`brew list`)
|
||
4. **Docs:** BuildAndTest CI table; `.gitignore` `.nim_runtime/`
|
||
5. Verified locally: `make build` uses `nimcache/`; `test-examples-smoke` PASS
|
||
|
||
---
|
||
|
||
## Сесия 65 (Drop / RAII docs — field-move story)
|
||
|
||
1. **LanguageRef — Drop and RAII** (under Gradual Ownership):
|
||
- `@[Drop]` vs `extend T for Drop` (static `Type_Drop`, no vtable)
|
||
- When auto-drop runs (block end, early return, branches) — not gated on Checked
|
||
- **Field-move skip Drop** with `MakeBox` + simplified C (no `Array_Drop(&items)`)
|
||
- Move-on-return, assignment, call-arg transfers; error-path still Drops
|
||
- Limits: whole-local moves, static dispatch, manual free pitfalls
|
||
2. **TOC** links Ownership + Drop; **Stdlib** `Array_Drop` + `Std::Drop` section
|
||
3. **README** Drop line mentions field-move
|
||
4. Cross-refs: `examples/move_field.bux`, `examples/drop_early_return.bux`,
|
||
selfhost smoke
|
||
5. Verified: `move_field` C has no `Array_Drop` on moved `items`; example PASS
|
||
|
||
---
|
||
|
||
## Сесия 66 (macro hygiene + frag kinds `literal` / `block`)
|
||
|
||
1. **Fragment kinds** (bootstrap + selfhost):
|
||
- `literal` / `lit` — only `ekLiteral` (rejects `1 + 2`)
|
||
- `block` — only `ekBlock` `{ … }`
|
||
- Shared `fragMatches` / `Macro_FragMatches` at match time
|
||
2. **Hygiene gensym:**
|
||
- Bootstrap: also rename **`for` binders**; walk for bodies in collect
|
||
- Selfhost: gensym `skFor` + recurse if/while/for/MacroRep bodies
|
||
- CBE: two `with_acc!` → `__m1_n` / `__m2_n` (no collision)
|
||
3. **Example:** `examples/macro_hygiene.bux` → 11/21/7/3/42 + PASS
|
||
4. **LanguageRef:** kind table + hygiene layers (graft + gensym)
|
||
5. **Makefile:** `macro_hygiene` in EXAMPLES + EXAMPLES_SMOKE
|
||
6. Verified: bootstrap + **buxc2**; negative `only_lit!(1+2)` → no matching rule
|
||
|
||
---
|
||
|
||
## Сесия 67 (CI Windows smoke)
|
||
|
||
1. **`.github/workflows/ci.yml` — `windows` job** (`windows-latest`, bash shell):
|
||
- Cache Nim **2.0.8** (prebuilt zip — fast) + `nimcache`
|
||
- `nim c -o:buxc.exe` bootstrap
|
||
- Pure Nim unit tests: lexer / parser / sema / hir / borrow
|
||
- CLI smoke: `buxc.exe new` + `--version`
|
||
2. **Scope (honest):** no `bux run` examples on Windows yet —
|
||
`rt/runtime.c` is POSIX (`ucontext`, `pthread`, sockets, OpenSSL link).
|
||
Job still gates bootstrap regressions on Win.
|
||
3. **`ci-gate`:** `windows` is a required job
|
||
4. **Docs:** BuildAndTest CI table + Windows note
|
||
5. Locally: YAML validated; full Win run is on GHA only
|
||
|
||
---
|
||
|
||
## Сесия 68 (partial field moves + Drop goldens)
|
||
|
||
1. **Bug:** `return bag.items` still ran `Bag_Drop(&bag)` → double-free /
|
||
corrupt Array (ASSERT fail). Also dead double-Drop after terminal `return`.
|
||
2. **Bootstrap** (`hir_lower.nim`):
|
||
- `markMovedOutFromAst` handles `ekField` when **field type is droppable**
|
||
(`autoDropFuncName`) — not for `return a.id` (int)
|
||
- Scope exit: skip re-emitting drops when last stmt always-returns; pop defers
|
||
3. **Selfhost** (`c_backend.bux`):
|
||
- `CBE_MarkMovedFromNodeHint` + droppable type check; return uses `currentRetType`
|
||
- Store/let rhs walks field access for partial moves
|
||
4. **Example + golden smoke:**
|
||
- `examples/move_field_partial.bux`
|
||
- `tools/smoke_drop_move.sh` + `make test-drop-move` (CI goldens job)
|
||
5. Verified: partial PASS; `TakeItems` has **no** `Bag_Drop`; drop_early_return 5;
|
||
move_field PASS
|
||
|
||
---
|
||
|
||
## Сесия 69 (macro unhygienic binders)
|
||
|
||
1. **Problem:** gensym renamed *all* template `let`/`var` binders, so
|
||
`var $name: int = …` with `$name:ident` could not introduce a call-site name.
|
||
2. **Bootstrap** (`macroexpand.nim`):
|
||
- `binderIdentFromFrag` + `expandUnhygienic` set
|
||
- `substStmt`: rewrite `skLet`/`skFor` binder when name is `$frag` → ekIdent
|
||
- `collectLetNames` skips unhygienic names
|
||
3. **Selfhost** (`macroexpand.bux`):
|
||
- `Env_AddUnhy` / `Env_IsUnhy` / `Env_BinderFromFrag`
|
||
- `Subst_Stmt` rewrites binders; `Macro_GensymBlock(ex, body, env)` skips them
|
||
4. **Example:** `examples/macro_unhygienic.bux` → 11/21/6/10/1 + PASS
|
||
- C: `counter` / `other` / `n` kept; `acc` / `scratch` → `__mN_*`
|
||
5. **LanguageRef:** unhygienic binder table; EXAMPLES + EXAMPLES_SMOKE
|
||
6. Verified: bootstrap + **buxc2**; macro_hygiene still PASS
|
||
|
||
---
|
||
|
||
## Следващи стъпки
|
||
|
||
1. Windows: MinGW + runtime stubs for `hello` smoke (stretch)
|
||
2. Per-field Drop after partial move (stretch)
|
||
3. Macro: true `stmt`/`pat` token-tree frags (stretch)
|