shoney.arickathil
7f5af36e9e
- router/router.wo: Handler (handle(req) -> Resp) and Middleware (before(req) -> ?Resp; nil = continue) structural interfaces; Route/Mw record classes built as ctor literals at the registration site — the ownership shape the corpus pins (run/container-owned-move); route_match with :param captures over '/'-split segments (empties dropped, first mismatch wins). - app.wo: App holds the middleware chain + route table (take-push), satisfies http's Dispatcher, dispatches middleware-then-first-match, fills the captures onto the borrowed request in place (Dispatcher takes `mut req` — the borrow checker rightly refused rebuilding a Req from borrowed maps; captures collect locally so a failed match never touches the request), 404 fallback, serve(host, port) delegation. Verified against a throwaway app (not committed): middleware 401 short-circuit without the token; /things/:id captures 42 into the body; unknown path 404; a DIV0 handler answers 500 and the next request is served; SIGTERM clean. Framework image emits at 12161 bytes. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
57 lines
1.8 KiB
Text
57 lines
1.8 KiB
Text
-- router/router.wo — the handler model and the route table.
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--
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-- No function values in this language, by doctrine — so a handler is a
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-- CLASS satisfying the Handler interface (its fields are the closure
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-- substitute), dispatched structurally (ICALL). A class missing `handle`
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-- is a compile error (WO-E205). Middleware is its own interface because
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-- the signature differs: `before` returns `?Resp` — nil means continue,
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-- a Resp short-circuits (401 gates, redirects).
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pub interface Handler {
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fn handle(req: Req) -> Resp
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}
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pub interface Middleware {
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fn before(req: Req) -> ?Resp
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}
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-- One route: method + pattern + the handler value. Built with a ctor
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-- literal at the registration site (`Route { method: "GET", pattern:
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-- "/products/:id", h: ProductShow {} }`) — the exact ownership shape the
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-- conformance corpus pins (run/container-owned-move).
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pub class Route {
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method: Text
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pattern: Text
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h: Handler
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}
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-- Middleware wrapper record, same shape as Route for the same reason.
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pub class Mw {
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m: Middleware
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}
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-- Does `pattern` match `path`? Fills `params` with :name captures.
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-- Segments split on '/', empties dropped (so "/a//b" == "/a/b" and the
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-- root "/" is the empty segment list). First mismatch wins; a :segment
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-- captures anything non-empty.
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pub fn route_match(pattern: Text, path: Text, mut params: map<Text, Text>) -> Bool {
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let ps = split(pattern, "/");
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let xs = split(path, "/");
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let psegs: multi Text = [];
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for s in ps { if s != "" { push(psegs, s); } }
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let xsegs: multi Text = [];
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for s in xs { if s != "" { push(xsegs, s); } }
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if len(psegs) != len(xsegs) { return false; }
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let i = 0;
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while i < len(psegs) {
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let p = psegs[i];
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let x = xsegs[i];
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if starts_with(p, ":") {
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params[substr(p, 1, len(p) - 1)] = x;
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} else {
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if p != x { return false; }
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}
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i = i + 1;
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}
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return true;
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}
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