Adds two new top-level SXTP message types alongside
request/response/condition/event, modelled on Datastar's
datastar-patch-elements and datastar-patch-signals SSE events:
(patch :target "#x" :mode outer :body (~card)) - DOM fragment
morph. Subsumes HTMX swap modes. Mode is outer (default) |
inner | replace | prepend | append | before | after | remove.
(signals :values {:n 3} :only-if-missing false) - reactive
state patch. nil value removes the signal. only-if-missing
skips existing signals (lazy init).
A server response stream can mix both freely; clients dispatch
by head symbol, ordering preserved. Cleaner than HTMX's
swap-mode-per-trigger because the patch shape is decoupled from
the triggering element/attribute.
Spec at applications/sxtp/spec.sx (patch-fields, signals-fields,
patch-modes, example-patch-stream). Constructors / predicates /
accessors / serialise / parse in lib/host/sxtp.sx. 25 new tests
in lib/host/tests/sxtp.sx (predicates, mode normalisation, fixed
field order, remove-without-body, signals round-trip). Host
conformance 129/129 (was 104/104).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Greenfield SX-native pivot (NOT a strangler): the host speaks SX/SXTP end to end;
JSON only at the future ActivityPub federation edge.
- OUTPUT: host/json-status -> host/sx-status — every host/ok/host/error response is
text/sx via the serialize primitive (NOT application/json). Flips feed, relations,
blog reads. Tests assert the SX envelope ({:ok true :data ...}).
- DELETE the blog JSON CRUD /posts (POST/PUT/DELETE) + bearer-based host/blog--protect:
a pure old-contract REST mirror. Create/edit go through the HTML editor forms;
programmatic writes speak SXTP. FOLLOW-UP: no browser delete route yet (was JSON-only,
no UI) — add POST /:slug/delete + cascade edge cleanup when the metamodel UI needs it.
- INPUT: host/sx-body (sxtp.sx) parses a text/sx request body to a string-keyed dict
(parse-safe + sxtp/-normalize). feed POST + relations attach/detach read it.
- UNIFIED field reader host/fields / host/field: text/sx body OR urlencoded form by
content-type. The blog form handlers (new/edit/relate/unrelate) + login read through
it — additive, urlencoded still works (no-engine / bootstrap fallback).
Conformance 290/290 (11 suites). Retires the strangler framing in the plan; adds the
'SX all the way out' wire table. The engine half (browser posts text/sx) follows.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
lib/host/sxtp.sx implements the host<->subsystem wire format per
applications/sxtp/spec.sx:
- message algebra (request/response/condition/event + status helpers
ok/created/not-found/forbidden/invalid/fail) as string-keyed dicts;
verb/status/type stored as symbols (ride the wire bare)
- codec: sxtp/serialize (dict -> text/sx list form, deterministic top-level
field order, nested messages emitted in their own list form, no :msg leak)
and sxtp/parse (text/sx -> dict via a deep keyword-token->string normaliser)
- Dream bridge: sxtp/from-dream (HTTP req -> SXTP req, method->verb,
query->params) and sxtp/to-dream (SXTP resp -> HTTP resp, status->code,
body serialised to text/sx)
- 39-test suite covering algebra, serialise/parse round-trip, mappings, bridge
Runtime notes: serialize renders string-keyed dicts as {:k v} and symbols
bare; parsed keyword tokens are a distinct type (not = to string literals) so
parse normalises; unquote-splicing is unreliable so the emitter is str-based.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
