ludic/docs/language/annotations/annot-export.md
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docs(api): per-symbol pages, fuzzy search, deep token linking, hover cards
Rebuild the API Reference around one page per symbol and richer, verified content.

Pages & navigation
- One HTML page per symbol (kw-*, type-*, phase-*, screen-*, fn-*, annot-*, op-*)
  instead of a single scrolling page; namespace overview pages (ns-screen …
  ns-color) and a searchable index (api.html) with client-side fuzzy search.
- Sticky-header scroll offset (scroll-margin) so a jumped-to entry/param/color is
  never hidden, plus a flash highlight on the scrolled-to target.

Deep linking in every snippet & example
- Namespace members split: `Screen`→namespace page, `fill_rectangle`→method page;
  `Color`→palette page, `Charcoal`→its swatch — separately.
- Named arguments (`width:`) link to that parameter's anchor on the method page.
- Hover any token for a summary card built from the real API data (symbols.json).

Content & coverage
- Full authoritative surface documented from the compiler: every keyword, type,
  the 6 phases (Start/Input/FixedUpdate/Update/LateUpdate/Render, each its own
  page), all 22 annotations, namespace methods with parameter docs, builtins,
  the world_* reflection ABI, networking, operators — 155 symbols.
- Longer, clearer explanations; "model"/"model instance" terminology, not "entity";
  descriptive identifiers in every example (Position{column,row}, Velocity{delta_x,
  delta_y}, Health{current,maximum}, Player/Enemy) — no Pos/Seg/x/dx.
- Accuracy fixes from compiler ground-truth: world_count() takes no arg,
  world_query_next(property, cursor) arg order, event fields bind by name; dropped
  `when` and `module` (not in the self-hosted parser).

Tooling
- inventory.json + check.py: coverage guard (every symbol has a page), duplicate-
  token guard, and broken-link guard — fail CI so docs can't drift.
- validate.py: compiles every ```ludic example against bin/ludicc (158 compile).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-08-29 17:53:22 +03:00

1.1 KiB


id: annot-export name: @export category: annotations kind: annotation tokens: @export sig: @export fn name(…) -> R tip: Expose a function as a C-ABI symbol so a host can call it. order: 3

@export makes a fn visible outside the module as a plain C-ABI symbol, so a host program or another linked object can call it by name. Without it, functions are internal to the compiled unit; with it, the emitted symbol is externally linkable, which is how Ludic hands entry points to a runtime seam or a foreign caller. It is the outbound counterpart to extern fn, which pulls a foreign symbol in. Keep exported signatures to POD scalars and pointers, since they cross a C boundary where Ludic's richer types do not apply.

program ScoreModule {
  var running_total: int = 0

  @export fn add_points(amount: int) -> int {      # callable from a C-ABI host
    running_total = running_total + amount
    return running_total
  }

  entry {
    print(add_points(10))                           # 10
    print(add_points(5))                            # 15
  }
}