ludic/tools/docgen/README.md
Orkuncakilkaya e175619543 refactor(cli)!: split the contributor tool out of the ludic CLI
`ludic help` ended with a section titled "contributing to the toolchain itself",
listing bootstrap, reseed, docs-gen and release tasks. None of that is available
to someone who installed the language — those tasks need the repository — so the
shipped tool was advertising work its user cannot do, in a namespace they have to
read past to find `new` and `run`.

The tasks move to a second program, dev.ludic -> bin/ludic-dev, built from a
checkout and excluded from every release artifact. `ludic` keeps the project and
package commands and nothing else; `ludic dev …` now explains where the tasks
went instead of failing as an unknown command.

What this shook out: the two programs share prelude/build/project/pkg, so the
helpers each had accreted in whichever file first needed them — cc(),
ensure_ludicc, the string functions, title_case, cmd_version — moved to where
both can see them. The argument-shift indirection added for the `dev` namespace
is gone with the namespace, so commands read argv directly again.

`ludic-dev test` asserts the split rather than trusting it: the staged install
must build a project, and `ludic dev build` there must fail while naming
ludic-dev. install.sh keeps building older tags, whose bootstrap goes through
main.ludic.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-05 23:15:12 +03:00

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# Ludic documentation generator
Generates the public documentation site (the `pages` branch) from a single
source of truth, so the site can never drift from the language.
## Source of truth
```
docs/
language/<category>/<id>.md one file per symbol — keyword, type, phase,
builtin, namespace method, operator, annotation
language/<category>/_section.md section title + blurb + order
language/colors/palette.json the 221 named colors (generated by `ludic-dev docs-palette`)
site/site.json landing-page messaging (hero, features, …)
site/snippets/*.ludic the code shown on the landing page (real programs)
tools/docgen/inventory.json the authoritative symbol set the coverage guard checks
```
### A symbol file
```markdown
---
id: screen-fill_rectangle # anchor + page name (screen-fill_rectangle.html)
name: Screen.fill_rectangle
category: screen
kind: namespace-method # keyword|type|phase|namespace-method|builtin|annotation|operator
tokens: Screen.fill_rectangle # literal token(s) the highlighter matches & links
sig: Screen.fill_rectangle(x, y, width, height, color)
tip: Draw a solid, filled rectangle. # one sentence — the hover-card summary
order: 1
ns: Screen # namespace-method only
member: fill_rectangle # namespace-method only
related: screen-clear screen-draw_rectangle
---
Rich description — inline `<code>`/`backticks`, "model instance" language.
Parameters: # for anything that takes arguments
- `x` — the left edge, in pixels
- `color` — the fill color, e.g. a `Color.*` name
​```ludic
program Example { … descriptive-named, compilable … }
​```
```
## What it produces
One **page per symbol** (`<id>.html`), a namespace overview page per namespace
(`ns-screen.html` … `ns-color.html`), a searchable **index** (`api.html`, fuzzy
search over every symbol), the **landing page** (`index.html`), the
`ludic-highlight.js` highlighter (all its symbol tables, tips, per-item link
targets, per-parameter anchors and hover-card data generated from the sources
above), `symbols.json`, and `.nojekyll`.
In any code sample: keywords/types/builtins/annotations link to their page;
`Screen.fill_rectangle` links `Screen` → the namespace page and `fill_rectangle`
→ the method page separately; a named argument like `width:` links to that
parameter's anchor; `Color.Charcoal` links `Color` and `Charcoal` separately;
hovering any token shows a summary card from the real API data.
## Build & check
The generator and its guards are written in Ludic and run through `x` — there is
no Python in the pipeline. `assets/` (the CSS/HTML/JS templates) and
`inventory.json` are the only inputs the tools here still read directly.
```bash
bin/ludic-dev docs-gen --out build/pages # generate the whole site
bin/ludic-dev docs-check build/pages # coverage + duplicate-token + link guard
bin/ludic-dev check-docs # parse every ```ludic doc fence
```
`docs-check` fails CI if any symbol in `inventory.json` lacks a page, if a token
is documented on two pages, or if a highlighter link points at a missing page —
so "every symbol is documented, autogenerated each time" is enforced. It needs a
built `bin/ludic` (bootstrapped from the IR seed with clang alone).
## Publish
`.forgejo/workflows/docs.yml` bootstraps the toolchain from the IR seed and runs
`ludic-dev docs-gen` + `ludic-dev docs-check` on every push to `main` that touches `docs/**`,
`tools/docgen/**` or `tools/ludic-cli/**`, and publishes the result to the `pages` branch
root. `index.html` + `.nojekyll` always stay at the root.
## Colors
`palette.json` and `selfhost/backend/stdlib/emit_color.ludic` are both generated
by `bin/ludic-dev docs-palette` from a single palette table — the `pal_add(...)` rows in
`tools/ludic-cli/docgen.ludic`. Edit the table there and regenerate; do not hand-edit the
generated files.