1pub struct DiagnosticInfo {
21 pub code: &'static str,
22 pub summary: &'static str,
23 pub grammar_symbol: &'static [&'static str],
31}
32
33pub const REGISTRY: &[DiagnosticInfo] = &[
35 d(
36 "bynk.actor.bearer_identity_not_string_constructible",
37 "A `Bearer` actor's identity is not a string-constructible type.",
38 ),
39 d(
40 "bynk.actor.bearer_missing_secret",
41 "A `Bearer` actor does not name its signing secret.",
42 ),
43 d(
44 "bynk.actor.binder_shadows_param",
45 "A `by` actor binder collides with a handler parameter of the same name.",
46 ),
47 d(
48 "bynk.actor.by_on_agent",
49 "A `by` actor clause was placed on an agent `on call` handler, which has no actor.",
50 ),
51 d(
52 "bynk.actor.duplicate_sum_scheme",
53 "Two peers in a multi-actor sum share an authentication scheme.",
54 ),
55 d(
56 "bynk.actor.identity_not_sealed",
57 "An actor identity type is not a context-ownable (sealed) value type.",
58 ),
59 d(
60 "bynk.actor.missing_by_on_http",
61 "An HTTP handler lacks the required `by` actor clause.",
62 ),
63 d(
64 "bynk.actor.oidc_identity_not_string_constructible",
65 "An `Oidc` actor's identity is not a string-constructible type.",
66 ),
67 d(
68 "bynk.actor.oidc_missing_audience",
69 "An `Oidc` actor does not name its `audience`.",
70 ),
71 d(
72 "bynk.actor.oidc_missing_issuer",
73 "An `Oidc` actor does not name its `issuer`.",
74 ),
75 d(
76 "bynk.actor.oidc_missing_jwks",
77 "An `Oidc` actor does not name its `jwks` endpoint.",
78 ),
79 d(
80 "bynk.actor.oidc_not_in_sum",
81 "An `Oidc` actor appears as a member of a multi-actor sum.",
82 ),
83 d(
84 "bynk.actor.outside_context",
85 "An `actor` was declared outside a context (e.g. in a commons).",
86 ),
87 d(
88 "bynk.actor.refinement_base_unsupported",
89 "A refinement actor's base is not a `Bearer` actor (no claims to authorise against).",
90 ),
91 d(
92 "bynk.actor.refinement_in_sum",
93 "A refinement actor appears as a member of a multi-actor sum.",
94 ),
95 d(
96 "bynk.actor.refinement_predicate_unsupported",
97 "A refinement actor's `where` predicate is outside the closed claim-predicate set.",
98 ),
99 d(
100 "bynk.actor.scheme_not_admissible",
101 "An actor's scheme is not admissible on this handler's protocol.",
102 ),
103 d(
104 "bynk.actor.signature_identity_unsupported",
105 "A `Signature` actor declared an `identity`, which is not yet supported.",
106 ),
107 d(
108 "bynk.actor.signature_missing_header",
109 "A `Signature` actor does not name its signature header.",
110 ),
111 d(
112 "bynk.actor.signature_missing_secret",
113 "A `Signature` actor does not name its signing secret.",
114 ),
115 d(
116 "bynk.actor.signature_requires_body",
117 "A `Signature` handler does not take a `body` parameter.",
118 ),
119 d(
120 "bynk.actor.signature_tolerance_without_timestamp",
121 "A `Signature` actor set `tolerance` without a `timestamp` header.",
122 ),
123 d(
124 "bynk.actor.sum_requires_binder",
125 "A multi-actor sum `by` clause has no binder to match the resolved actor.",
126 ),
127 d(
128 "bynk.actor.unknown_actor",
129 "A handler's `by` clause names an actor that is not declared.",
130 ),
131 d(
132 "bynk.actor.unknown_scheme",
133 "An actor declares an authentication scheme that is not compiler-known.",
134 ),
135 d(
136 "bynk.actor.unreachable_sum_arm",
137 "A multi-actor sum has an arm unreachable after a catch-all (`None`) peer.",
138 ),
139 dg(
140 "bynk.adapter.consumes_context",
141 "An `adapter` consumed a context; adapter dependencies are adapter-to-adapter.",
142 &["consumes_decl"],
143 ),
144 dg(
145 "bynk.adapter.consumes_requires_selection",
146 "An `adapter` used a whole-unit or aliased `consumes`; adapters must select capabilities with `consumes U { Cap, … }`.",
147 &["consumes_decl"],
148 ),
149 dg(
150 "bynk.adapter.disallowed_item",
151 "An `adapter` declared a `service`, `agent`, or other item it may not contain.",
152 &["adapter_decl"],
153 ),
154 dg(
155 "bynk.adapter.duplicate_binding",
156 "An `adapter` declared more than one `binding` clause.",
157 &["binding_decl"],
158 ),
159 dg(
160 "bynk.adapter.no_binding",
161 "An `adapter` declares an external provider but no `binding` module to supply it.",
162 &["adapter_decl"],
163 ),
164 dg(
165 "bynk.adapter.provider_has_body",
166 "A provider inside an `adapter` has a Bynk body; adapter providers must be external.",
167 &["provider_decl"],
168 ),
169 dg(
170 "bynk.agent.construction_arity",
171 "An agent was constructed with the wrong number of key arguments.",
172 &["agent_decl"],
173 ),
174 dg(
175 "bynk.agent.handler_arity",
176 "An agent handler was called with the wrong number of arguments.",
177 &["agent_decl"],
178 ),
179 dg(
180 "bynk.agent.handler_not_found",
181 "Called a handler the agent does not declare.",
182 &["agent_decl"],
183 ),
184 dg(
185 "bynk.agent.key_mismatch",
186 "An agent key argument has the wrong type.",
187 &["agent_decl"],
188 ),
189 dg(
190 "bynk.agent.outside_context",
191 "An `agent` was declared outside a context.",
192 &["agent_decl"],
193 ),
194 dg(
195 "bynk.agent.return_not_effect",
196 "An agent handler's return type is not an `Effect`.",
197 &["agent_decl"],
198 ),
199 dg(
200 "bynk.agents.bad_state_initialiser",
201 "An agent `store` field initialiser is not a static value of the field's type.",
202 &["store_field"],
203 ),
204 dg(
205 "bynk.agents.non_zeroable_state_field",
206 "An agent `store` field has no initialiser and no implicit zero value.",
207 &["store_field"],
208 ),
209 d(
210 "bynk.boundary.structural_mismatch",
211 "Data crossing a context boundary did not match the expected shape.",
212 ),
213 dg(
214 "bynk.capability.op_arity",
215 "A capability operation was called with the wrong number of arguments.",
216 &["capability_decl"],
217 ),
218 dg(
219 "bynk.capability.outside_context",
220 "A `capability` was declared outside a context.",
221 &["capability_decl"],
222 ),
223 dg(
224 "bynk.capability.unknown_operation",
225 "Referenced an operation the capability does not declare.",
226 &["capability_decl"],
227 ),
228 d(
229 "bynk.cell.invalid_target",
230 "A `:=` write targets something that is not a `store Cell` field.",
231 ),
232 d(
233 "bynk.cell.self_reference",
234 "A `:=` right-hand side reads the cell being written (a read-modify-write); use `.update`.",
235 ),
236 dg(
237 "bynk.consumes.alias_conflict",
238 "Two `consumes` aliases collide.",
239 &["consumes_decl"],
240 ),
241 dg(
242 "bynk.consumes.capability_name_clash",
243 "Two flattened `consumes U { Cap }` capabilities collide, or one clashes with a local capability.",
244 &["consumes_decl"],
245 ),
246 dg(
247 "bynk.consumes.in_commons",
248 "`consumes` appears in a `commons` (it is only valid in a context).",
249 &["consumes_decl"],
250 ),
251 dg(
252 "bynk.consumes.name_conflict",
253 "A `consumes` name collides with another name in scope.",
254 &["consumes_decl"],
255 ),
256 dg(
257 "bynk.consumes.self_reference",
258 "A context `consumes` itself.",
259 &["consumes_decl"],
260 ),
261 dg(
262 "bynk.consumes.service_arity",
263 "A consumed service was called with the wrong number of arguments.",
264 &["consumes_decl"],
265 ),
266 dg(
267 "bynk.consumes.target_is_commons",
268 "`consumes` targets a `commons` instead of a context.",
269 &["consumes_decl"],
270 ),
271 dg(
272 "bynk.consumes.unknown_context",
273 "`consumes` names a context that does not exist.",
274 &["consumes_decl"],
275 ),
276 dg(
277 "bynk.consumes.unknown_service",
278 "Called a service the consumed context does not declare.",
279 &["consumes_decl"],
280 ),
281 d(
282 "bynk.context.consumes_cycle",
283 "Contexts form a `consumes` dependency cycle.",
284 ),
285 d(
286 "bynk.context.external_construction",
287 "A context-owned type was constructed from outside that context.",
288 ),
289 dg(
290 "bynk.context.external_provider",
291 "A bodiless (external) provider was declared outside an `adapter`.",
292 &["provider_decl"],
293 ),
294 d(
295 "bynk.context.opaque_inspection",
296 "An opaquely-exported type was inspected from outside its context.",
297 ),
298 d(
299 "bynk.contract.duplicate_name",
300 "A function declares two contract clauses (`requires`/`ensures`) with the same name.",
301 ),
302 d(
303 "bynk.contract.impure_predicate",
304 "A contract predicate uses an effectful or test-only construct; a contract clause must be pure.",
305 ),
306 d(
307 "bynk.contract.not_bool",
308 "A contract predicate does not have type `Bool`.",
309 ),
310 d(
311 "bynk.contract.restated_by_test",
312 "A `case`/`property` merely restates a contract clause already declared at the function; the test is redundant.",
313 ),
314 d(
315 "bynk.contract.result_in_requires",
316 "A precondition (`requires`) references `result`; the return value is only in scope inside an `ensures`.",
317 ),
318 dg(
319 "bynk.cron.bad_params",
320 "A cron handler declares more than one parameter, or a non-`Int` one.",
321 &["cron_handler"],
322 ),
323 dg(
324 "bynk.cron.duplicate_schedule",
325 "Two cron handlers declare the same schedule.",
326 &["cron_handler"],
327 ),
328 dg(
329 "bynk.cron.invalid_schedule",
330 "A cron expression is not five whitespace-separated fields.",
331 &["cron_handler"],
332 ),
333 dg(
334 "bynk.cron.return_not_effect_result",
335 "A cron handler does not return `Effect[Result[(), E]]`.",
336 &["cron_handler"],
337 ),
338 d(
339 "bynk.duration.literal_overflow",
340 "A `Duration` literal (`<int>.<unit>`) exceeds the representable millisecond range.",
341 ),
342 dg(
343 "bynk.effect.bind_in_pure_context",
344 "An `<-` bind was used in a pure (non-effectful) context.",
345 &["effect_let_stmt"],
346 ),
347 dg(
348 "bynk.effect.bind_on_non_effect",
349 "An `<-` bind was applied to a non-`Effect` value.",
350 &["effect_let_stmt"],
351 ),
352 d(
353 "bynk.effect.capability_in_pure_context",
354 "A capability was used in a pure context.",
355 ),
356 d(
357 "bynk.effect.cross_context_in_pure_context",
358 "A cross-context call was made in a pure context.",
359 ),
360 dg(
361 "bynk.effect.do_in_pure_context",
362 "A `do` statement was used in a pure (non-effectful) context.",
363 &["do_stmt"],
364 ),
365 dg(
366 "bynk.effect.do_on_non_effect",
367 "A `do` statement was applied to a non-`Effect` value.",
368 &["do_stmt"],
369 ),
370 dg(
371 "bynk.effect.do_requires_unit",
372 "A `do` statement was applied to a valued `Effect[T]`; `do` performs a unit effect, so a real result would be dropped — use `let _ <- e` instead.",
373 &["do_stmt"],
374 ),
375 dg(
376 "bynk.effect.fn_value_in_pure_context",
377 "An effectful function value was called in a pure context; like a capability call, it is legal only where the enclosing body is effectful.",
378 &["call"],
379 ),
380 dg(
381 "bynk.expect.not_bool",
382 "`expect` was given a non-`Bool` predicate.",
383 &["expect_expr"],
384 ),
385 dg(
386 "bynk.expect.outside_case",
387 "`expect` was used outside a `case` body.",
388 &["expect_expr"],
389 ),
390 dg(
391 "bynk.exports.capability_not_provided",
392 "An exported capability has no provider in its context.",
393 &["exports_decl"],
394 ),
395 dg(
396 "bynk.exports.conflicting_visibility",
397 "A type is exported with conflicting visibilities.",
398 &["exports_decl"],
399 ),
400 dg(
401 "bynk.exports.duplicate_export",
402 "The same name is exported more than once.",
403 &["exports_decl"],
404 ),
405 dg(
406 "bynk.exports.duplicate_in_clause",
407 "A name appears twice in one `exports` clause.",
408 &["exports_decl"],
409 ),
410 dg(
411 "bynk.exports.undeclared_capability",
412 "`exports capability` names a capability that is not declared.",
413 &["exports_decl"],
414 ),
415 dg(
416 "bynk.exports.undeclared_type",
417 "`exports` names a type that is not declared.",
418 &["exports_decl"],
419 ),
420 dg(
421 "bynk.generics.no_bounds",
422 "A type parameter carries a bound (`[A: …]`); bounded generics are not in v0.20a.",
423 &["fn_decl"],
424 ),
425 dg(
426 "bynk.generics.no_generic_types",
427 "A `type` declaration carries a type-parameter list; generic type declarations are not in v0.20a (type parameters belong to functions).",
428 &["type_decl"],
429 ),
430 dg(
431 "bynk.generics.type_arg_mismatch",
432 "Inferred or explicit type arguments conflict, have the wrong arity, target a non-generic function, or a type parameter shadows a declared type.",
433 &["call"],
434 ),
435 dg(
436 "bynk.generics.uninferable_type_arg",
437 "A generic function's type parameter could not be inferred from the arguments and was not given explicitly (`name[T](…)`); a bare generic function also cannot be passed as a value in v0.20a.",
438 &["call"],
439 ),
440 dg(
441 "bynk.given.cross_context_unknown_capability",
442 "`given B.Cap` names a capability the consumed context does not export.",
443 &["given_clause"],
444 ),
445 dg(
446 "bynk.given.undeclared_capability",
447 "A handler uses a capability it did not declare with `given`.",
448 &["given_clause"],
449 ),
450 dg(
451 "bynk.given.unknown_capability",
452 "`given` names a capability that does not exist.",
453 &["given_clause"],
454 ),
455 dg(
456 "bynk.given.unused_capability",
457 "A `given` capability is never used (warning).",
458 &["given_clause"],
459 ),
460 d(
461 "bynk.held.branch_divergence",
462 "Branches of a conditional leave a held value (e.g. `Connection[F]`) in inconsistent ownership states — one consumes or stores it, another leaves it owned (§2.9.5, real-time track slice 2).",
463 ),
464 d(
465 "bynk.held.consume_on_borrow",
466 "A consuming operation (`close`/`put`/`take`) is called on a *borrowed* held reference — borrows admit only non-consuming operations like `send` (§2.9.3, real-time track slice 2).",
467 ),
468 d(
469 "bynk.held.leak",
470 "A held value (`Connection[F]`) is still owned at scope exit — it must be disposed (stored, closed, or transferred) before the handler returns (§2.9.1, real-time track slice 2).",
471 ),
472 d(
473 "bynk.held.unsupported_map_op",
474 "A held `Map[K, Connection]` is given an `update`/`upsert` — a held resource cannot be transformed by a `(Connection) -> Connection` function; use `put`/`get`/`remove` (real-time track slice 3b-ii).",
475 ),
476 d(
477 "bynk.held.unsupported_storage",
478 "A held value (`Connection[F]`) is stored in a `Set`/`Log`/`Cache` — held values may only live in `Cell[Option[Connection]]` or `Map[K, Connection]` (§2.9.3, real-time track slice 2).",
479 ),
480 d(
481 "bynk.held.use_after_consume",
482 "A held value (`Connection[F]`) is used after a consuming operation (`close`/`put`/`take`) ended its lifetime (§2.9.2, real-time track slice 2).",
483 ),
484 d(
485 "bynk.history.not_an_agent",
486 "A `for all run: History[T]` names a `T` that is not an agent — only an agent has handlers to sequence and reachable states to observe (testing track slice 7, ADR 0155).",
487 ),
488 d(
489 "bynk.history.not_generable",
490 "A `for all run: History[Agent]` targets an agent with a handler parameter whose type cannot be generated (e.g. a `Matches` refinement), so its call-history cannot be driven (testing track slice 7, ADR 0155).",
491 ),
492 d(
493 "bynk.history.outside_property",
494 "`History[Agent]` appears outside a `property`'s `for all` binding — it is a test-only generator, not a value type (testing track slice 7, ADR 0155).",
495 ),
496 d(
497 "bynk.history.restates_invariant",
498 "A history property merely re-checks a guarantee a declared `invariant`/`transition` already enforces on every reached state (testing track slice 7, ADR 0155).",
499 ),
500 dg(
501 "bynk.http.body_on_get_or_delete",
502 "A GET or DELETE handler declares a `body` parameter.",
503 &["http_handler"],
504 ),
505 d(
506 "bynk.http.cache_bad_max_age",
507 "A `@cache` annotation's `maxAge` is missing or not a positive `Duration` literal.",
508 ),
509 d(
510 "bynk.http.cache_bad_scope",
511 "A `@cache` annotation's `scope` is not `public` or `private`.",
512 ),
513 d(
514 "bynk.http.cache_duplicate",
515 "A handler carries more than one `@cache` annotation.",
516 ),
517 d(
518 "bynk.http.cache_on_non_get",
519 "A `@cache` annotation is placed on a handler that is not `on http GET`.",
520 ),
521 d(
522 "bynk.http.cache_unknown_arg",
523 "A `@cache` annotation has an argument outside the closed set (`maxAge`/`scope`).",
524 ),
525 d(
526 "bynk.http.cors_invalid_field",
527 "A `cors` policy field (`headers`/`credentials`/`maxAge`) has the wrong value shape.",
528 ),
529 d(
530 "bynk.http.cors_invalid_origins",
531 "A `cors` policy's `origins` is missing, empty, or not a list of string literals.",
532 ),
533 d(
534 "bynk.http.cors_not_http",
535 "A `cors { }` policy appears on a service that is not `from http`.",
536 ),
537 d(
538 "bynk.http.cors_unknown_field",
539 "A `cors { }` policy declares a field outside the closed set.",
540 ),
541 d(
542 "bynk.http.cors_wildcard_credentials",
543 "A `cors` policy combines `credentials: true` with the wildcard origin `[\"*\"]`.",
544 ),
545 dg(
546 "bynk.http.duplicate_route",
547 "Two handlers share the same method and route.",
548 &["http_handler"],
549 ),
550 dg(
551 "bynk.http.extra_param",
552 "A handler parameter is neither a path parameter nor `body`.",
553 &["http_handler"],
554 ),
555 dg(
556 "bynk.http.invalid_path",
557 "An HTTP route path is malformed.",
558 &["http_handler"],
559 ),
560 d(
561 "bynk.http.limit_bad_max_body",
562 "A `@limit` annotation's `maxBody` is missing or not a positive `Int` literal.",
563 ),
564 d(
565 "bynk.http.limit_duplicate",
566 "A handler carries more than one `@limit` annotation.",
567 ),
568 d(
569 "bynk.http.limit_on_bodyless",
570 "A `@limit` annotation is placed on a handler that takes no body (a GET or DELETE).",
571 ),
572 d(
573 "bynk.http.limit_unknown_arg",
574 "A `@limit` annotation has an argument outside the closed set (`maxBody`).",
575 ),
576 d(
577 "bynk.http.limits_invalid_field",
578 "A `limits` policy field (`maxBody`) has the wrong value shape.",
579 ),
580 d(
581 "bynk.http.limits_not_http",
582 "A `limits { }` policy appears on a service that is not `from http`.",
583 ),
584 d(
585 "bynk.http.limits_unknown_field",
586 "A `limits { }` policy declares a field outside the closed set.",
587 ),
588 dg(
589 "bynk.http.path_param_not_stringy",
590 "A path parameter's type is not constructible from a string.",
591 &["http_handler"],
592 ),
593 dg(
594 "bynk.http.reserved_prefix",
595 "A route uses the reserved `/_bynk/` prefix.",
596 &["http_handler"],
597 ),
598 dg(
599 "bynk.http.return_not_effect_http_result",
600 "An HTTP handler does not return `Effect[HttpResult[T]]`.",
601 &["http_handler"],
602 ),
603 d(
604 "bynk.http.security_invalid_field",
605 "A `security` policy field (`hsts`/`nosniff`) has the wrong value shape.",
606 ),
607 d(
608 "bynk.http.security_not_http",
609 "A `security { }` policy appears on a service that is not `from http`.",
610 ),
611 d(
612 "bynk.http.security_unknown_field",
613 "A `security { }` policy declares a field outside the closed set.",
614 ),
615 dg(
616 "bynk.http.unbound_path_param",
617 "A `:name` route segment has no matching handler parameter.",
618 &["http_handler"],
619 ),
620 d(
621 "bynk.http.unknown_handler_annotation",
622 "A handler carries an annotation outside the closed set (`@cache`/`@limit`).",
623 ),
624 d(
625 "bynk.index.bad_argument",
626 "An `@indexed` argument is not a `by: <field>` label.",
627 ),
628 d(
629 "bynk.index.missing",
630 "A query filters a map by equality on a field that is not `@indexed` (a perf-hint warning).",
631 ),
632 d(
633 "bynk.index.unkeyable_key",
634 "An `@indexed(by: k)` field is not value-keyable.",
635 ),
636 d(
637 "bynk.index.unknown_key",
638 "An `@indexed(by: k)` field is not a field of the map's value type.",
639 ),
640 d(
641 "bynk.index.unused",
642 "A declared `@indexed(by: k)` is never used by an equality filter (a hygiene warning).",
643 ),
644 d(
645 "bynk.invariant.cross_agent_reference",
646 "An invariant predicate references another agent; invariants are per-agent.",
647 ),
648 d(
649 "bynk.invariant.duplicate_name",
650 "An agent declares two invariants with the same name.",
651 ),
652 d(
653 "bynk.invariant.impure_predicate",
654 "An invariant predicate uses an effectful or test-only construct.",
655 ),
656 d(
657 "bynk.invariant.not_bool",
658 "An invariant predicate does not have type `Bool`.",
659 ),
660 dg(
661 "bynk.lambda.unannotated_param",
662 "A lambda parameter has no type annotation in a position where no function type is expected to infer it from.",
663 &["lambda_expr"],
664 ),
665 dg(
666 "bynk.lex.bad_escape",
667 "An invalid escape sequence in a string literal.",
668 &["string_literal"],
669 ),
670 dg(
671 "bynk.lex.float_literal_overflow",
672 "A float literal does not fit a finite 64-bit float.",
673 &["float_literal"],
674 ),
675 dg(
676 "bynk.lex.integer_overflow",
677 "An integer literal is out of range.",
678 &["number_literal"],
679 ),
680 d(
681 "bynk.lex.unclosed_doc_block",
682 "A documentation block is not closed.",
683 ),
684 d(
685 "bynk.lex.unexpected_character",
686 "An unexpected character in the source.",
687 ),
688 dg(
689 "bynk.lex.unterminated_interpolation",
690 "An interpolation hole `\\(…)` is not closed on its line.",
691 &["string_literal"],
692 ),
693 dg(
694 "bynk.lex.unterminated_string",
695 "A string literal is not terminated.",
696 &["string_literal"],
697 ),
698 d(
699 "bynk.list.deprecated_function",
700 "A `bynk.list` free function (`map`/`filter`/`find`/`any`/`all`) is deprecated in favour of the `List` method form (warning; auto-fixable).",
701 ),
702 d(
703 "bynk.namespace.reserved",
704 "A user unit is named `bynk` or `bynk.*`; the `bynk` root is reserved for the toolchain.",
705 ),
706 d(
707 "bynk.observe.bad_count",
708 "An observation call count is not a non-negative integer literal (`called once` / `called <n> times`).",
709 ),
710 d(
711 "bynk.observe.impure_with",
712 "A `with` predicate uses an effectful or test-only construct; it must be pure.",
713 ),
714 d(
715 "bynk.observe.not_a_seam",
716 "An observation targets a capability the unit under test does not consume.",
717 ),
718 d(
719 "bynk.observe.outside_case",
720 "An observation appears outside a `case` body.",
721 ),
722 d(
723 "bynk.observe.trace_outside_test",
724 "`trace(Cap.op)` appears outside a `case` body.",
725 ),
726 d(
727 "bynk.observe.unknown_op",
728 "An observation names an operation the capability does not declare.",
729 ),
730 d(
731 "bynk.observe.with_not_bool",
732 "A `with` predicate does not have type `Bool`.",
733 ),
734 dg(
735 "bynk.parse.consumes_after_decls",
736 "`consumes` appears after other declarations.",
737 &["consumes_decl"],
738 ),
739 d(
740 "bynk.parse.dangling_handler_annotation",
741 "A handler-position annotation (e.g. `@cache`) is not followed by an `on` handler.",
742 ),
743 dg(
744 "bynk.parse.duplicate_cors",
745 "A service declares more than one `cors { }` policy.",
746 &["service_decl"],
747 ),
748 dg(
749 "bynk.parse.duplicate_limits",
750 "A service declares more than one `limits { }` policy.",
751 &["service_decl"],
752 ),
753 dg(
754 "bynk.parse.duplicate_security",
755 "A service declares more than one `security { }` policy.",
756 &["service_decl"],
757 ),
758 dg(
759 "bynk.parse.empty_agent",
760 "An `agent` body is empty.",
761 &["agent_decl"],
762 ),
763 dg(
764 "bynk.parse.empty_capability",
765 "A `capability` body is empty.",
766 &["capability_decl"],
767 ),
768 d(
769 "bynk.parse.empty_interpolation",
770 "An interpolation hole `\\(…)` contains no expression.",
771 ),
772 dg(
773 "bynk.parse.empty_match",
774 "A `match` has no arms.",
775 &["match_expr"],
776 ),
777 dg(
778 "bynk.parse.empty_service",
779 "A `service` body is empty.",
780 &["service_decl"],
781 ),
782 dg(
783 "bynk.parse.expected_agent_key",
784 "Expected a `key` declaration in an agent.",
785 &["agent_decl"],
786 ),
787 d(
788 "bynk.parse.expected_agent_storage",
789 "An agent declares no storage — it has no `store` fields.",
790 ),
791 dg(
792 "bynk.parse.expected_base_type",
793 "Expected a base type.",
794 &["base_type"],
795 ),
796 dg(
797 "bynk.parse.expected_capability_op",
798 "Expected a capability operation.",
799 &["capability_op"],
800 ),
801 d("bynk.parse.expected_expression", "Expected an expression."),
802 dg(
803 "bynk.parse.expected_handler",
804 "Expected a handler.",
805 &["handler"],
806 ),
807 d("bynk.parse.expected_item", "Expected a declaration."),
808 dg(
809 "bynk.parse.expected_predicate",
810 "Expected a refinement predicate.",
811 &["refinement"],
812 ),
813 dg(
814 "bynk.parse.expected_provider_op",
815 "Expected a provider operation.",
816 &["provider_op"],
817 ),
818 d("bynk.parse.expected_token", "Expected a specific token."),
819 d("bynk.parse.expected_type", "Expected a type."),
820 d(
821 "bynk.parse.expected_unit_header",
822 "Expected a `commons` or `context` header.",
823 ),
824 dg(
825 "bynk.parse.expected_visibility",
826 "Expected a visibility keyword.",
827 &["exports_decl"],
828 ),
829 dg(
830 "bynk.parse.exports_after_decls",
831 "`exports` appears after other declarations.",
832 &["exports_decl"],
833 ),
834 d(
835 "bynk.parse.extra_tokens",
836 "Unexpected tokens after an otherwise complete construct.",
837 ),
838 dg(
839 "bynk.parse.generic_arg_count",
840 "Wrong number of generic type arguments.",
841 &["generic_type_ref"],
842 ),
843 dg(
844 "bynk.parse.handler_in_agent",
845 "A protocol handler (`on GET`/`schedule`/`message`) was declared in an agent.",
846 &["handler"],
847 ),
848 d(
849 "bynk.parse.invariant_after_handler",
850 "An `invariant` was declared after a handler; invariants precede handlers.",
851 ),
852 dg(
853 "bynk.parse.malformed_float_literal",
854 "A float literal is missing a digit on one side of the `.` (`1.`, `.5`).",
855 &["float_literal"],
856 ),
857 dg(
858 "bynk.parse.non_associative",
859 "A non-associative operator was chained (e.g. `a == b == c`).",
860 &["binary_expr"],
861 ),
862 d(
863 "bynk.parse.orphan_doc_block",
864 "A documentation block is not attached to a declaration (warning).",
865 ),
866 dg(
867 "bynk.parse.reserved_keyword",
868 "A reserved keyword was used as an identifier.",
869 &["identifier"],
870 ),
871 dg(
872 "bynk.parse.self_outside_method",
873 "`self` used outside a method or handler.",
874 &["self_expr"],
875 ),
876 d(
877 "bynk.parse.storage_after_phase",
878 "Agent storage (`state` / `store`) is declared after the invariants or handlers.",
879 ),
880 d(
881 "bynk.parse.transition_after_handler",
882 "A `transition` is declared after an agent handler; step invariants precede the handlers.",
883 ),
884 d(
885 "bynk.parse.unexpected_adapter",
886 "An `adapter` appeared where it is not allowed.",
887 ),
888 dg(
889 "bynk.parse.unexpected_context",
890 "A `context` appeared where it is not allowed.",
891 &["context_decl"],
892 ),
893 d("bynk.parse.unexpected_eof", "Unexpected end of input."),
894 dg(
895 "bynk.parse.unexpected_suite",
896 "A `suite` appeared where it is not allowed.",
897 &["suite_decl"],
898 ),
899 d(
900 "bynk.parse.unknown_effect_method",
901 "An unknown method on `Effect`.",
902 ),
903 dg(
904 "bynk.parse.unknown_handler_kind",
905 "An unknown handler form (expected `call`, an HTTP method, `schedule`, or `message`).",
906 &["handler"],
907 ),
908 dg(
909 "bynk.parse.unknown_predicate",
910 "An unknown refinement predicate.",
911 &["predicate_name"],
912 ),
913 d(
914 "bynk.parse.unknown_tier",
915 "A `case`/`suite` `as <tier>` clause names something other than `unit`, `integration`, or `system`.",
916 ),
917 dg(
918 "bynk.parse.uses_after_decls",
919 "`uses` appears after other declarations.",
920 &["uses_decl"],
921 ),
922 d(
923 "bynk.project.file_and_directory",
924 "A unit exists as both a file and a directory.",
925 ),
926 d(
927 "bynk.project.inconsistent_commons_name",
928 "A source file's path does not match its declared name.",
929 ),
930 d(
931 "bynk.project.kind_conflict",
932 "A name is declared as both a commons and a context.",
933 ),
934 d(
935 "bynk.project.no_root",
936 "No project root could be determined.",
937 ),
938 d(
939 "bynk.project.no_sources",
940 "The project contains no source files.",
941 ),
942 d(
943 "bynk.project.read_failed",
944 "A source file could not be read.",
945 ),
946 dg(
947 "bynk.property.restates_refinement",
948 "A `property` merely re-checks a refinement its type already guarantees.",
949 &["for_all"],
950 ),
951 dg(
952 "bynk.property.where_not_bool",
953 "A `for all ... where` filter does not type to `Bool`.",
954 &["for_all"],
955 ),
956 dg(
957 "bynk.provider.dependency_cycle",
958 "Providers form a capability dependency cycle through `given`.",
959 &["provider_decl"],
960 ),
961 dg(
962 "bynk.provider.extra_operation",
963 "A `provides` block implements an operation not in the capability.",
964 &["provider_decl"],
965 ),
966 dg(
967 "bynk.provider.missing_operation",
968 "A `provides` block is missing a capability operation.",
969 &["provider_decl"],
970 ),
971 dg(
972 "bynk.provider.outside_context",
973 "`provides` was declared outside a context.",
974 &["provider_decl"],
975 ),
976 dg(
977 "bynk.provider.signature_mismatch",
978 "A `provides` operation's signature does not match the capability.",
979 &["provider_decl"],
980 ),
981 dg(
982 "bynk.provider.unknown_capability",
983 "`provides` names a capability that does not exist.",
984 &["provider_decl"],
985 ),
986 d(
987 "bynk.provides.bad_sequence",
988 "A `provides … returns each […]` sequence is malformed (e.g. empty).",
989 ),
990 d(
991 "bynk.provides.not_a_seam",
992 "A test `provides` overrides a capability the unit under test does not consume.",
993 ),
994 d(
995 "bynk.provides.rhs_type",
996 "A test `provides … returns <value>` right-hand side does not match the operation's return type.",
997 ),
998 d(
999 "bynk.provides.unknown_op",
1000 "A test `provides` names an operation the capability does not declare.",
1001 ),
1002 d(
1003 "bynk.query.join_key_mismatch",
1004 "A `joinOn`/`leftJoin` left and right key function return different types.",
1005 ),
1006 dg(
1007 "bynk.query.sum_needs_numeric",
1008 "A `sum`/`average` key function does not return a numeric type (`Int`, `Float`, or `Duration`).",
1009 &[],
1010 ),
1011 dg(
1012 "bynk.queue.bad_params",
1013 "An `on message` handler does not take exactly one `message` parameter.",
1014 &["queue_handler"],
1015 ),
1016 dg(
1017 "bynk.queue.duplicate_consumer",
1018 "Two `on message` handlers consume the same queue.",
1019 &["queue_handler"],
1020 ),
1021 dg(
1022 "bynk.queue.invalid_name",
1023 "A `from queue(\"…\")` binding has an empty queue name.",
1024 &["queue_handler"],
1025 ),
1026 dg(
1027 "bynk.queue.return_not_queue_result",
1028 "An `on message` handler does not return `Effect[QueueResult]`.",
1029 &["handler"],
1030 ),
1031 dg(
1032 "bynk.record_spread.field_type_mismatch",
1033 "A record-spread override has the wrong type for the field.",
1034 &["record_spread"],
1035 ),
1036 dg(
1037 "bynk.record_spread.non_record_base",
1038 "The base of a record spread is not a record.",
1039 &["record_spread"],
1040 ),
1041 dg(
1042 "bynk.record_spread.type_mismatch",
1043 "A record spread's base is a different record type.",
1044 &["record_spread"],
1045 ),
1046 dg(
1047 "bynk.record_spread.unknown_field",
1048 "A record spread overrides a field the record does not have.",
1049 &["record_spread"],
1050 ),
1051 dg(
1052 "bynk.refine.literal_violates",
1053 "A literal does not satisfy the refined type's predicate.",
1054 &["refined_type"],
1055 ),
1056 dg(
1057 "bynk.requires.unpinned_dependency",
1058 "An adapter `binding … requires { … }` entry has an unpinned version range.",
1059 &["binding_decl"],
1060 ),
1061 d(
1062 "bynk.resolve.ambiguous_variant",
1063 "A variant name is ambiguous across several sum types.",
1064 ),
1065 dg(
1066 "bynk.resolve.arity_mismatch",
1067 "A function was called with the wrong number of arguments.",
1068 &["call"],
1069 ),
1070 d("bynk.resolve.duplicate_actor", "Two actors share a name."),
1071 dg(
1072 "bynk.resolve.duplicate_agent",
1073 "Two agents share a name.",
1074 &["agent_decl"],
1075 ),
1076 dg(
1077 "bynk.resolve.duplicate_capability",
1078 "Two capabilities share a name.",
1079 &["capability_decl"],
1080 ),
1081 dg(
1082 "bynk.resolve.duplicate_field",
1083 "A record declares a field twice.",
1084 &["record_type"],
1085 ),
1086 dg(
1087 "bynk.resolve.duplicate_field_init",
1088 "A record construction initialises a field twice.",
1089 &["record_construction"],
1090 ),
1091 dg(
1092 "bynk.resolve.duplicate_fn",
1093 "Two functions share a name.",
1094 &["fn_decl"],
1095 ),
1096 dg(
1097 "bynk.resolve.duplicate_method",
1098 "Two methods share a name.",
1099 &["fn_decl"],
1100 ),
1101 dg(
1102 "bynk.resolve.duplicate_param",
1103 "A parameter name is repeated.",
1104 &["param"],
1105 ),
1106 dg(
1107 "bynk.resolve.duplicate_provider",
1108 "A capability is provided more than once.",
1109 &["provider_decl"],
1110 ),
1111 dg(
1112 "bynk.resolve.duplicate_service",
1113 "Two services share a name.",
1114 &["service_decl"],
1115 ),
1116 dg(
1117 "bynk.resolve.duplicate_type",
1118 "Two types share a name.",
1119 &["type_decl"],
1120 ),
1121 dg(
1122 "bynk.resolve.duplicate_variant",
1123 "A sum type declares a variant twice.",
1124 &["sum_type"],
1125 ),
1126 d(
1127 "bynk.resolve.fn_without_call",
1128 "A function was referenced without being called.",
1129 ),
1130 dg(
1131 "bynk.resolve.let_shadows_fn",
1132 "A `let` binding shadows a function.",
1133 &["let_stmt"],
1134 ),
1135 dg(
1136 "bynk.resolve.let_shadows_type",
1137 "A `let` binding shadows a type.",
1138 &["let_stmt"],
1139 ),
1140 d(
1141 "bynk.resolve.method_unknown_type",
1142 "A method is defined on an unknown type.",
1143 ),
1144 dg(
1145 "bynk.resolve.missing_field",
1146 "A record construction omits a required field.",
1147 &["record_construction"],
1148 ),
1149 d(
1150 "bynk.resolve.name_conflict",
1151 "Two declarations share a name.",
1152 ),
1153 dg(
1154 "bynk.resolve.not_a_record_type",
1155 "Record syntax was used on a non-record type.",
1156 &["record_construction"],
1157 ),
1158 dg(
1159 "bynk.resolve.opaque_record_construction",
1160 "An opaque type was constructed with record syntax.",
1161 &["record_construction"],
1162 ),
1163 dg(
1164 "bynk.resolve.param_as_function",
1165 "A value (such as a parameter) was called as a function.",
1166 &["call"],
1167 ),
1168 dg(
1169 "bynk.resolve.recursive_record_field",
1170 "A record directly contains a field of its own type.",
1171 &["record_type"],
1172 ),
1173 dg(
1174 "bynk.resolve.self_outside_method",
1175 "`self` referenced outside a method or handler.",
1176 &["self_expr"],
1177 ),
1178 dg(
1179 "bynk.resolve.type_as_function",
1180 "A type name was called as if it were a function.",
1181 &["call"],
1182 ),
1183 d(
1184 "bynk.resolve.type_in_expr",
1185 "A type name was used where a value is expected.",
1186 ),
1187 dg(
1188 "bynk.resolve.unconsumed_context",
1189 "A context's service was called without a `consumes` declaration.",
1190 &["consumes_decl"],
1191 ),
1192 dg(
1193 "bynk.resolve.unknown_field",
1194 "Accessed a field the record does not have.",
1195 &["field_access"],
1196 ),
1197 dg(
1198 "bynk.resolve.unknown_function",
1199 "Called a function that does not exist.",
1200 &["call"],
1201 ),
1202 d(
1203 "bynk.resolve.unknown_name",
1204 "Referenced a name that is not in scope.",
1205 ),
1206 dg(
1207 "bynk.resolve.unknown_static_member",
1208 "Referenced an unknown static member (e.g. `T.x`).",
1209 &["field_access"],
1210 ),
1211 d(
1212 "bynk.resolve.unknown_type",
1213 "Referenced a type that does not exist.",
1214 ),
1215 dg(
1216 "bynk.send.in_pure_context",
1217 "A `~>` send was used in a pure (non-effectful) context.",
1218 &["effect_send_stmt"],
1219 ),
1220 dg(
1221 "bynk.send.non_effect",
1222 "A `~>` send was applied to a non-`Effect` value.",
1223 &["effect_send_stmt"],
1224 ),
1225 dg(
1226 "bynk.send.requires_unit",
1227 "A `~>` send targets an operation whose reply is not `Effect[()]`.",
1228 &["effect_send_stmt"],
1229 ),
1230 dg(
1231 "bynk.service.missing_from",
1232 "A `from`-less service has a handler other than `on call`.",
1233 &["service_decl"],
1234 ),
1235 dg(
1236 "bynk.service.mixed_protocols",
1237 "A service mixes handler forms that do not match its `from <protocol>`.",
1238 &["service_decl"],
1239 ),
1240 dg(
1241 "bynk.service.outside_context",
1242 "A `service` was declared outside a context.",
1243 &["service_decl"],
1244 ),
1245 dg(
1246 "bynk.service.return_not_effect",
1247 "A service handler's return type is not an `Effect`.",
1248 &["service_decl"],
1249 ),
1250 dg(
1251 "bynk.service.unknown_protocol",
1252 "A `from <protocol>` names an unknown protocol (e.g. a transport like Kafka).",
1253 &["service_decl"],
1254 ),
1255 d(
1256 "bynk.service.websocket_header",
1257 "The `from WebSocket` header is malformed — it binds frame types as `WebSocket(in: <type>, out: <type>)` (real-time track slice 3).",
1258 ),
1259 d(
1260 "bynk.service.websocket_multiple",
1261 "A context holds more than one `from WebSocket` service — at v1 the Workers upgrade routes by the `Upgrade: websocket` header alone, so one WebSocket service per context (real-time track slice 3b).",
1262 ),
1263 d(
1264 "bynk.service.websocket_open_arity",
1265 "A `from WebSocket` service must hold exactly one `on open` handler (the edge upgrade), and at most one `on message` (inbound) and one `on close` (real-time track slice 3/3b-iii).",
1266 ),
1267 d(
1268 "bynk.store.annotation_kind_mismatch",
1269 "A storage annotation is used on a kind it does not apply to (e.g. `@ttl` on a `Map`).",
1270 ),
1271 d(
1272 "bynk.store.annotation_unsupported",
1273 "A known storage annotation (`@ttl`/`@retain`/`@indexed`/`@bounded`) is used before the slice that supports it.",
1274 ),
1275 d(
1276 "bynk.store.cache_needs_clock",
1277 "A handler performs a `Cache` operation (TTL expiry reads the clock) without declaring `given Clock`.",
1278 ),
1279 d(
1280 "bynk.store.cache_ttl_required",
1281 "A `Cache` field is missing its required `@ttl(<duration>)` annotation (a keyed store with no expiry is a `Map`).",
1282 ),
1283 d(
1284 "bynk.store.kind_arity",
1285 "A storage kind was applied to the wrong number of type arguments (e.g. `Cell[A, B]`).",
1286 ),
1287 d(
1288 "bynk.store.kind_unsupported",
1289 "A known storage kind (`Queue`) is used before the slice that supports it.",
1290 ),
1291 d(
1292 "bynk.store.log_needs_clock",
1293 "A handler calls `Log.append` (which stamps the current time) without declaring `given Clock`.",
1294 ),
1295 d(
1296 "bynk.store.unknown_annotation",
1297 "A `store` field carries an annotation outside the closed `@indexed`/`@ttl`/`@retain`/`@bounded` set.",
1298 ),
1299 d(
1300 "bynk.store.unknown_kind",
1301 "A `store` field's type is not a known storage kind.",
1302 ),
1303 d(
1304 "bynk.store.unknown_op",
1305 "A storage-`Map`/`Set` operation is not a recognised entry/membership method.",
1306 ),
1307 dg(
1308 "bynk.suite.duplicate_case_name",
1309 "Two `case`s share a description.",
1310 &["case"],
1311 ),
1312 dg(
1313 "bynk.suite.unknown_target",
1314 "A `suite` targets a unit that does not exist.",
1315 &["suite_decl"],
1316 ),
1317 d(
1318 "bynk.target.browser_bundle_only",
1319 "The `browser` platform builds only the in-process `Bundle` topology; `--target workers` is not a browser build.",
1320 ),
1321 dg(
1322 "bynk.target.vendor_conflict",
1323 "One deployment unit's in-process closure uses platform-native capabilities from two mutually-exclusive platforms.",
1324 &["consumes_decl"],
1325 ),
1326 dg(
1327 "bynk.target.vendor_required",
1328 "A deployment unit uses a platform-native capability but the build selects another `--platform`.",
1329 &["consumes_decl"],
1330 ),
1331 d(
1332 "bynk.tier.property_has_tier",
1333 "A `property` carries an `as <tier>` clause; tiers are a `case`-only affordance.",
1334 ),
1335 d(
1336 "bynk.tier.system_needs_wire",
1337 "An `as system` test stands up fewer than two contexts; the system tier wires across contexts.",
1338 ),
1339 d(
1340 "bynk.transition.cross_agent_reference",
1341 "A transition predicate references another agent; step invariants are per-agent.",
1342 ),
1343 d(
1344 "bynk.transition.duplicate_name",
1345 "An agent declares two transitions with the same name.",
1346 ),
1347 d(
1348 "bynk.transition.impure_predicate",
1349 "A transition predicate uses an effectful or test-only construct; a step invariant must be pure.",
1350 ),
1351 d(
1352 "bynk.transition.no_step_reference",
1353 "A transition references neither `old` nor `new`; it constrains one state, so it is an `invariant`, not a step.",
1354 ),
1355 d(
1356 "bynk.transition.not_bool",
1357 "A transition predicate does not have type `Bool`.",
1358 ),
1359 d(
1360 "bynk.types.ambiguous_constructor",
1361 "`Ok`/`Err` is ambiguous between `Result` and `HttpResult`; qualify it.",
1362 ),
1363 dg(
1364 "bynk.types.argument_mismatch",
1365 "A function argument has the wrong type.",
1366 &["call"],
1367 ),
1368 d(
1369 "bynk.types.bytes_at_workers_boundary",
1370 "A bare `Bytes` appears in a `workers` wire signature — the erased cross-context boundary does not base64-encode it, so v1 diagnoses it rather than mis-encode. The typed paths (`bundle` calls, `store`/record fields) round-trip a `Bytes` fine (ADR 0142 D8).",
1371 ),
1372 dg(
1373 "bynk.types.call_arity",
1374 "A function value was applied with the wrong number of arguments.",
1375 &["call"],
1376 ),
1377 dg(
1378 "bynk.types.cannot_infer_option_type_param",
1379 "The value type of `None` could not be inferred.",
1380 &["none_expr"],
1381 ),
1382 d(
1383 "bynk.types.cannot_infer_result_type_params",
1384 "The type parameters of a `Result` could not be inferred.",
1385 ),
1386 d(
1387 "bynk.types.constructor_arity",
1388 "A variant constructor got the wrong number of arguments.",
1389 ),
1390 d(
1391 "bynk.types.constructor_base_mismatch",
1392 "A `.of` constructor was given an argument of the wrong base type.",
1393 ),
1394 dg(
1395 "bynk.types.duplicate_literal_arm",
1396 "A `match` has two arms for the same literal value.",
1397 &["match_arm"],
1398 ),
1399 dg(
1400 "bynk.types.duplicate_variant_arm",
1401 "A `match` has two arms for the same variant.",
1402 &["match_arm"],
1403 ),
1404 d(
1405 "bynk.types.embeds_ambiguous",
1406 "A type is embedded by more than one variant of a sum, so `?`'s conversion would be ambiguous.",
1407 ),
1408 d(
1409 "bynk.types.embeds_unknown_variant",
1410 "An `embeds … as V` clause names a variant the sum does not declare.",
1411 ),
1412 d(
1413 "bynk.types.embeds_variant_shape",
1414 "An `embeds E as V` target variant must have exactly one payload field, of type `E`.",
1415 ),
1416 dg(
1417 "bynk.types.empty_refinement",
1418 "A refinement admits no values (contradictory predicates).",
1419 &["refinement"],
1420 ),
1421 dg(
1422 "bynk.types.err_value_mismatch",
1423 "An `Err` payload has the wrong type.",
1424 &["err_expr"],
1425 ),
1426 dg(
1427 "bynk.types.field_access_on_non_record",
1428 "Field access on a value that is not a record.",
1429 &["field_access"],
1430 ),
1431 dg(
1432 "bynk.types.field_refinement_not_base",
1433 "An inline field refinement requires a base or refined type.",
1434 &["record_field"],
1435 ),
1436 dg(
1437 "bynk.types.field_value_mismatch",
1438 "A record field was given a value of the wrong type.",
1439 &["record_construction"],
1440 ),
1441 dg(
1442 "bynk.types.function_at_boundary",
1443 "A function type appeared in a serialisable or boundary position (a record field, sum payload, service/agent handler signature, capability operation signature, agent state field, or agent key); functions cannot serialise or cross a boundary.",
1444 &["function_type_ref"],
1445 ),
1446 dg(
1447 "bynk.types.guard_not_bool",
1448 "A match-arm `if` guard is not a `Bool` expression.",
1449 &["match_arm"],
1450 ),
1451 d(
1452 "bynk.types.held_at_boundary",
1453 "A held value (`Connection[F]`) appears in a serialisable or boundary position — a held resource is built and disposed in place, never persisted or sent across a boundary (§2.9, real-time track slice 2).",
1454 ),
1455 d(
1456 "bynk.types.held_not_comparable",
1457 "A held value (`Connection[F]`) is compared with `==`/`!=` — held values have identity, not value-equality (§2.9.3, real-time track slice 2).",
1458 ),
1459 dg(
1460 "bynk.types.if_branch_mismatch",
1461 "The branches of an `if` have different types.",
1462 &["if_expr"],
1463 ),
1464 dg(
1465 "bynk.types.if_non_bool_cond",
1466 "An `if` condition is not a `Bool`.",
1467 &["if_expr"],
1468 ),
1469 dg(
1470 "bynk.types.if_without_else_requires_unit",
1471 "An `if` with no `else` branch has a non-unit then-branch; the missing else defaults to `()`, so the branch must be `()` or `Effect[()]`.",
1472 &["if_expr"],
1473 ),
1474 d(
1475 "bynk.types.interpolation_non_scalar",
1476 "An interpolation hole holds a value with no string form.",
1477 ),
1478 dg(
1479 "bynk.types.invalid_regex",
1480 "A `Matches` predicate contains an invalid regular expression.",
1481 &["refinement"],
1482 ),
1483 dg(
1484 "bynk.types.inverted_range",
1485 "An `InRange` predicate has its bounds inverted.",
1486 &["refinement"],
1487 ),
1488 dg(
1489 "bynk.types.is_base_mismatch",
1490 "An `is` refinement check is applied to a value of the wrong base type.",
1491 &["is_expr"],
1492 ),
1493 dg(
1494 "bynk.types.is_literal_pattern",
1495 "A literal was used on the right of `is`; `is` tests type/refinement, not value equality (use `==`).",
1496 &["is_expr"],
1497 ),
1498 dg(
1499 "bynk.types.is_non_sum",
1500 "`is` was applied to a value that is not a sum type.",
1501 &["is_expr"],
1502 ),
1503 dg(
1504 "bynk.types.is_unknown_variant",
1505 "`is` names a variant the type does not have.",
1506 &["is_expr"],
1507 ),
1508 dg(
1509 "bynk.types.json_uncodable",
1510 "A `Json.encode`/`Json.decode` target type cannot pass through the typed JSON codec (functions, effects, error builtins).",
1511 &["method_call"],
1512 ),
1513 dg(
1514 "bynk.types.key_not_orderable",
1515 "A `sortBy`/`min`/`max` key function does not return an orderable type (`Int`, `Float`, `String`, `Duration`, or `Instant`).",
1516 &[],
1517 ),
1518 dg(
1519 "bynk.types.lambda_mismatch",
1520 "A lambda's parameter count, parameter annotations, or body type do not match the expected function type.",
1521 &["lambda_expr"],
1522 ),
1523 dg(
1524 "bynk.types.let_annotation_mismatch",
1525 "A `let` value does not match its type annotation.",
1526 &["let_stmt"],
1527 ),
1528 dg(
1529 "bynk.types.list_element_mismatch",
1530 "A list-literal element has a different type from the list's element type.",
1531 &["list_literal"],
1532 ),
1533 dg(
1534 "bynk.types.match_arm_mismatch",
1535 "A `match` arm has a different type from the others.",
1536 &["match_arm"],
1537 ),
1538 dg(
1539 "bynk.types.match_non_sum_discriminant",
1540 "`match` was applied to a value that is not a sum type.",
1541 &["match_expr"],
1542 ),
1543 dg(
1544 "bynk.types.method_arity",
1545 "A method was called with the wrong number of arguments.",
1546 &["method_call"],
1547 ),
1548 dg(
1549 "bynk.types.method_not_found",
1550 "Called a method the type does not have.",
1551 &["method_call"],
1552 ),
1553 dg(
1554 "bynk.types.method_on_non_named_type",
1555 "A method was called on a built-in type that has no methods.",
1556 &["method_call"],
1557 ),
1558 dg(
1559 "bynk.types.mixed_pattern_bindings",
1560 "A pattern mixes named and positional bindings.",
1561 &["variant_pattern"],
1562 ),
1563 dg(
1564 "bynk.types.negative_length",
1565 "A length predicate was given a negative value.",
1566 &["refinement"],
1567 ),
1568 dg(
1569 "bynk.types.no_numeric_coercion",
1570 "`Int` and `Float` were mixed without an explicit conversion — in an operation or in refinement bounds.",
1571 &["binary_expr", "refinement"],
1572 ),
1573 dg(
1574 "bynk.types.non_exhaustive_match",
1575 "A `match` does not cover every variant.",
1576 &["match_expr"],
1577 ),
1578 dg(
1579 "bynk.types.ok_value_mismatch",
1580 "An `Ok` payload has the wrong type.",
1581 &["ok_expr"],
1582 ),
1583 dg(
1584 "bynk.types.opaque_raw_outside",
1585 "`.raw` on an opaque type was used outside its defining commons.",
1586 &["field_access"],
1587 ),
1588 dg(
1589 "bynk.types.opaque_record_construction",
1590 "An opaque type was constructed with record syntax.",
1591 &["record_construction"],
1592 ),
1593 dg(
1594 "bynk.types.opaque_unsafe_outside",
1595 "`.unsafe` on an opaque type was used outside its defining context.",
1596 &["field_access"],
1597 ),
1598 dg(
1599 "bynk.types.pattern_arity",
1600 "A pattern binds the wrong number of payload fields.",
1601 &["variant_pattern"],
1602 ),
1603 dg(
1604 "bynk.types.pattern_type_mismatch",
1605 "A pattern's type does not match the matched value.",
1606 &["variant_pattern"],
1607 ),
1608 dg(
1609 "bynk.types.predicate_base_mismatch",
1610 "A predicate does not apply to the type's base (e.g. a string predicate on an `Int`).",
1611 &["refinement"],
1612 ),
1613 d(
1614 "bynk.types.query_at_boundary",
1615 "A `Query` type appears in a storable or boundary-crossing position — a query is built and executed in place, never persisted or sent (ADR 0115).",
1616 ),
1617 dg(
1618 "bynk.types.question_error_mismatch",
1619 "`?` propagates an error type incompatible with the function's.",
1620 &["question_expr"],
1621 ),
1622 dg(
1623 "bynk.types.question_on_non_result",
1624 "`?` was applied to a non-`Result` value.",
1625 &["question_expr"],
1626 ),
1627 dg(
1628 "bynk.types.question_option_outside_http",
1629 "`?` lifts an `Option` only inside a handler returning `HttpResult` (`None` becomes `NotFound`); elsewhere use `.okOr(err)`.",
1630 &["question_expr"],
1631 ),
1632 dg(
1633 "bynk.types.question_outside_result",
1634 "`?` used in a function that does not return a `Result`.",
1635 &["question_expr"],
1636 ),
1637 d(
1638 "bynk.types.return_mismatch",
1639 "A returned value does not match the declared return type.",
1640 ),
1641 dg(
1642 "bynk.types.some_value_mismatch",
1643 "A `Some` payload has the wrong type.",
1644 &["some_expr"],
1645 ),
1646 d(
1647 "bynk.types.stream_at_boundary",
1648 "A `Stream` type appears in a storable or boundary-crossing position — a stream is a live value-over-time source, never persisted or sent across a boundary (real-time track slice 0).",
1649 ),
1650 d(
1651 "bynk.types.stream_not_comparable",
1652 "A `Stream` value is compared with `==`/`!=` — a stream is a live value-over-time source, not a comparable value (real-time track slice 0).",
1653 ),
1654 d(
1655 "bynk.types.type_mismatch",
1656 "Two types that were required to match did not.",
1657 ),
1658 dg(
1659 "bynk.types.uninferable_element_type",
1660 "An empty `[]` (or `List.empty()` / `Map.empty()`) has no expected type to infer its element type from.",
1661 &["list_literal"],
1662 ),
1663 dg(
1664 "bynk.types.unkeyable_distinct",
1665 "A `distinct`/`distinctBy` element or key is not value-keyable (`String`, `Int`, or a refined/opaque type over them).",
1666 &[],
1667 ),
1668 dg(
1669 "bynk.types.unkeyable_map_key",
1670 "A `Map` key type is not value-keyable (`String`, `Int`, or a refined/opaque type over them).",
1671 &["generic_type_ref"],
1672 ),
1673 dg(
1674 "bynk.types.unknown_field",
1675 "Referenced a field the record type does not declare.",
1676 &["field_access"],
1677 ),
1678 dg(
1679 "bynk.types.unknown_pattern_field",
1680 "A pattern names a field the variant does not have.",
1681 &["variant_pattern"],
1682 ),
1683 dg(
1684 "bynk.types.unknown_static_member",
1685 "Referenced an unknown static member on a type.",
1686 &["field_access"],
1687 ),
1688 dg(
1689 "bynk.types.unknown_variant_in_pattern",
1690 "A pattern names a variant the sum type does not have.",
1691 &["variant_pattern"],
1692 ),
1693 dg(
1694 "bynk.types.unreachable_arm",
1695 "A `match` arm is unreachable.",
1696 &["match_arm"],
1697 ),
1698 d(
1699 "bynk.types.variant_arity",
1700 "A variant constructor got the wrong number of payload values.",
1701 ),
1702 d(
1703 "bynk.types.variant_missing_payload",
1704 "A variant requiring a payload was used without one.",
1705 ),
1706 d(
1707 "bynk.types.variant_payload_mismatch",
1708 "A variant payload has the wrong type.",
1709 ),
1710 dg(
1711 "bynk.uses.name_conflict",
1712 "A `uses` name collides with another name.",
1713 &["uses_decl"],
1714 ),
1715 dg(
1716 "bynk.uses.self_reference",
1717 "A commons `uses` itself.",
1718 &["uses_decl"],
1719 ),
1720 dg(
1721 "bynk.uses.target_is_context",
1722 "`uses` targets a context instead of a commons.",
1723 &["uses_decl"],
1724 ),
1725 dg(
1726 "bynk.uses.unknown_commons",
1727 "`uses` names a commons that does not exist.",
1728 &["uses_decl"],
1729 ),
1730 dg(
1731 "bynk.val.agent_not_generable",
1732 "A `for all`/`Val` cannot generate an agent — fabricated agent states need not be reachable.",
1733 &["for_all"],
1734 ),
1735 dg(
1736 "bynk.val.arity",
1737 "`Val[T]` was given the wrong number of pin arguments.",
1738 &["val_expr"],
1739 ),
1740 dg(
1741 "bynk.val.literal_violates",
1742 "A pinned `Val[T]` value violates the type's refinement.",
1743 &["val_expr"],
1744 ),
1745 dg(
1746 "bynk.val.needs_pin",
1747 "A bare `Val[T]` cannot generate a value (e.g. a `Matches` string); pin one.",
1748 &["val_expr"],
1749 ),
1750 dg(
1751 "bynk.val.outside_test",
1752 "`Val[T]` was used outside a test case body.",
1753 &["val_expr"],
1754 ),
1755 dg(
1756 "bynk.val.pin_not_literal",
1757 "A `Val[T]` pin argument is not a compile-time literal.",
1758 &["val_expr"],
1759 ),
1760 dg(
1761 "bynk.val.pin_unsupported",
1762 "A pin was given for a type kind that does not support pinning.",
1763 &["val_expr"],
1764 ),
1765 dg(
1766 "bynk.val.unknown_type",
1767 "`Val[T]` names a type that does not resolve.",
1768 &["val_expr"],
1769 ),
1770 dg(
1771 "bynk.val.unsupported_kind",
1772 "`Val[T]` cannot fabricate a value for this kind of type.",
1773 &["val_expr"],
1774 ),
1775 d(
1776 "bynk.ws.message_frame_param",
1777 "A WebSocket `on message` handler does not have exactly one parameter of the service's inbound (`in:`) frame type — the decoded frame (real-time track slice 3b-iii).",
1778 ),
1779 d(
1780 "bynk.ws.open_given_unsupported",
1781 "A WebSocket `on open` handler declares `given` capabilities — unsupported at v1, since on Workers the handler runs inside the connection-hosting Durable Object, which has no composition root to supply them (real-time track slice 3b).",
1782 ),
1783 d(
1784 "bynk.ws.open_transfer_shape",
1785 "A WebSocket `on open` handler does not transfer its `connection` into exactly one agent, so the Workers upgrade has no single Durable Object to route to (real-time track slice 3b).",
1786 ),
1787 d(
1788 "bynk.ws.route_param_mismatch",
1789 "A WebSocket `on message`/`on close` route parameter does not match the `on open` parameter at the same position — route values are recovered positionally from the connection, so they must be a type-compatible prefix of the `on open` parameters (real-time track slice 3b-iii).",
1790 ),
1791];
1792
1793const fn d(code: &'static str, summary: &'static str) -> DiagnosticInfo {
1795 DiagnosticInfo {
1796 code,
1797 summary,
1798 grammar_symbol: &[],
1799 }
1800}
1801
1802const fn dg(
1804 code: &'static str,
1805 summary: &'static str,
1806 grammar_symbol: &'static [&'static str],
1807) -> DiagnosticInfo {
1808 DiagnosticInfo {
1809 code,
1810 summary,
1811 grammar_symbol,
1812 }
1813}
1814
1815pub fn category(code: &str) -> &str {
1818 code.split('.').nth(1).unwrap_or("")
1819}
1820
1821fn category_title(cat: &str) -> &'static str {
1823 match cat {
1824 "agent" | "agents" => "Agents",
1825 "boundary" => "Boundaries",
1826 "capability" => "Capabilities",
1827 "consumes" => "Consumes",
1828 "context" => "Contexts",
1829 "contract" => "Contracts",
1830 "cron" => "Cron",
1831 "effect" => "Effects",
1832 "expect" => "Expectations",
1833 "exports" => "Exports",
1834 "given" => "Given capabilities",
1835 "http" => "HTTP",
1836 "lex" => "Lexer",
1837 "mock" => "Mocks (collaborators)",
1838 "observe" => "Observation",
1839 "parse" => "Parser",
1840 "project" => "Project",
1841 "property" => "Properties (generative tests)",
1842 "provider" => "Providers",
1843 "queue" => "Queue",
1844 "record_spread" => "Record spread",
1845 "refine" => "Refinement",
1846 "resolve" => "Resolution",
1847 "service" => "Services",
1848 "suite" => "Suites and cases",
1849 "transition" => "Transitions (step invariants)",
1850 "types" => "Type checking",
1851 "uses" => "Uses",
1852 "val" => "Value fabrication",
1853 _ => "Other",
1854 }
1855}
1856
1857pub fn render_markdown() -> String {
1861 use std::collections::BTreeMap;
1862
1863 let mut by_category: BTreeMap<&str, Vec<&DiagnosticInfo>> = BTreeMap::new();
1865 for info in REGISTRY {
1866 by_category
1867 .entry(category_title(category(info.code)))
1868 .or_default()
1869 .push(info);
1870 }
1871
1872 let mut out = String::new();
1873 out.push_str("# Diagnostic index\n\n");
1874 out.push_str(
1875 "<!-- GENERATED FILE — do not edit by hand.\n \
1876 Source: bynkc/src/diagnostics.rs (`render_markdown`).\n \
1877 Regenerate with: BYNK_BLESS=1 cargo test -p bynkc --test diagnostics_registry -->\n\n",
1878 );
1879 out.push_str(
1880 "Every diagnostic code the compiler can emit, with a one-line summary of \
1881 the cause, grouped by category. For step-by-step cause-and-fix guidance \
1882 on the most common ones, see the [troubleshooting guides](../troubleshooting/index.md).\n\n",
1883 );
1884 out.push_str(&format!(
1885 "There are **{}** codes in total.\n",
1886 REGISTRY.len()
1887 ));
1888
1889 for (title, infos) in &by_category {
1890 out.push_str(&format!("\n## {title}\n\n"));
1891 out.push_str("| Code | Summary | Construct |\n|---|---|---|\n");
1892 for info in infos {
1893 let construct = info
1898 .grammar_symbol
1899 .iter()
1900 .map(|sym| format!("[`{sym}`](grammar.md#rule-{sym})"))
1901 .collect::<Vec<_>>()
1902 .join(", ");
1903 out.push_str(&format!(
1904 "| `{}` | {} | {} |\n",
1905 info.code, info.summary, construct
1906 ));
1907 }
1908 }
1909
1910 out
1911}
1912
1913pub fn render_grammar_semantics_json() -> String {
1919 use std::collections::BTreeMap;
1920
1921 let mut by_symbol: BTreeMap<&str, Vec<&DiagnosticInfo>> = BTreeMap::new();
1924 for info in REGISTRY {
1925 for sym in info.grammar_symbol {
1926 by_symbol.entry(sym).or_default().push(info);
1927 }
1928 }
1929
1930 let mut map = serde_json::Map::new();
1931 map.insert(
1932 "_generated".to_string(),
1933 serde_json::Value::String(
1934 "Generated from the grammar_symbol field of bynkc/src/diagnostics.rs. \
1935 Do not edit by hand. Regenerate with: BYNK_BLESS=1 cargo test -p \
1936 bynkc --test diagnostics_registry"
1937 .to_string(),
1938 ),
1939 );
1940 for (sym, infos) in by_symbol {
1941 let arr: Vec<serde_json::Value> = infos
1942 .iter()
1943 .map(|info| serde_json::json!({ "code": info.code, "summary": info.summary }))
1944 .collect();
1945 map.insert(sym.to_string(), serde_json::Value::Array(arr));
1946 }
1947
1948 let mut s =
1949 serde_json::to_string_pretty(&serde_json::Value::Object(map)).expect("serialise semantics");
1950 s.push('\n');
1951 s
1952}