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writeonce/docs/stories/language-runtime-database/done/05-language-surface.md
shoney.arickathil 954aacc9a5 docs: story frontmatter + Dataview board views 
- 28 story files gain YAML frontmatter: iteration id, status
  (mirrors folder), chain position (7 files, positions 1-6)
- board-views.md: Dataview queries (not-done, by-status lanes,
  chain order, active); Kanban caveat — view only, frontmatter
  is source of truth, folder move + status key change together
- board points at the views

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-08-21 12:17:50 +02:00

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iteration status
5 done

Iteration 5 — language surface (Haxe-parity adoptions)

Format: fiberloom product/story-iteration-template. Part of Story — one language, one runtime, one database, one binary.

Status: ✅ COMPLETE 2026-08-20. The grammar half landed 2026-08-14 — modules, and/or, interpolation, const, loop control, switch expressions, typedef records, enum payloads, try/catch, nil/?T, statics, pub(read) syntax, container literals, for k, v in m, as. The strictness half landed in three waves: ?T forced handling (WO-E211/212/213 + narrowing) and reject rows (WO-E105) on 2026-08-18; the final three on 2026-08-20 (branch language-surface-strictness, developer directive overriding the post-12 park) — pub(read) write enforcement (WO-E219, class-owned writes, corpus-pinned), using static extensions (compile-time rewrite to a free-fn call, WO-E220 on method collision, zero owner/emit awareness), and #if build flags (woc -D name, token-level filter, WO-E003 misuse). is/throw stay cut (0 workload uses); abstract is a reject row. Plan 8 is closed.

Goals

  • The language grows from milestone grammar to a daily-driver surface: the systems-track verdict table's every adopt row — switch expressions, typedef records with ?fields, ?T optionals with null-narrowing, enum payload variants, try/catch/throw over traps, static members, abstract newtypes, using extensions, use modules, is, pub / pub(read), #if build flags, string interpolation, loop control.
  • Every reject row (inheritance, Dynamic, cast, macros, FFI…) refuses with a diagnostic citing doctrine — the language's boundaries are as deliberate as its features.

Acceptance Criteria

  • What to achieve?
    • Given the verdict table in the systems-track spec,
    • when the corpus runs,
    • then every adopt row has at least one golden fixture and one must-fail fixture passing, and every reject row that would parse produces its doctrine-citing diagnostic.
  • What to achieve?
    • Given a switch over a union missing one variant and lacking default,
    • when it compiles,
    • then the diagnostic names exactly the missing variants.
  • What to achieve?
    • Given the three fenced VM changes (catch frames, variant objects, boxed scalar optionals),
    • when they land,
    • then the format doc is updated in the same change and all prior trap fixtures still pass byte-for-byte.

Out Of Scope

  • Stdlib modules and program mode (iteration 6).
  • Any new VM capability beyond the three fenced changes.

Info

  • Normative table: docs/superpowers/specs/2026-08-01-systems-track-design.md Part 1.
  • Order inside the plan matters: modules first (everything imports through them), data shapes before optionals, rejects last.

Proposed Solution

  • Execute the existing plan: compiler/plan/2026-08-01-haxe-parity-language.md (nine tasks, each shipping its fixtures and error-catalog entries in the same task).