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.duplicate_type_param",
422 "A `type` or `fn` declares the same type-parameter name more than once (v0.157, ADR 0183).",
423 &[],
424 ),
425 dg(
426 "bynk.generics.generic_non_record",
427 "A `type` declaration carries type parameters on a non-record body; only a record body (`type Name[T] = { … }`) may be generic (v0.157, ADR 0183).",
428 &["type_decl"],
429 ),
430 dg(
431 "bynk.generics.generic_record_at_boundary",
432 "A generic record instantiation appears in a serialised position (handler signature, agent store, record field, or codec target), or a `Val[…]` fabricates a value of a generic type; generic records are non-boundary in v0.157 (ADR 0183).",
433 &[],
434 ),
435 dg(
436 "bynk.generics.method_on_generic_type",
437 "A method is attached to a generic type; methods on generic types (generic methods) are not in v0.157 (ADR 0183).",
438 &["fn_decl"],
439 ),
440 dg(
441 "bynk.generics.no_bounds",
442 "A type parameter carries a bound (`[A: …]`); bounded generics are not in v0.20a.",
443 &["fn_decl"],
444 ),
445 dg(
446 "bynk.generics.type_arg_count",
447 "A user-declared generic type is applied to the wrong number of type arguments, or a generic type is named without its `[…]` arguments (v0.157, ADR 0183).",
448 &["applied_type_ref"],
449 ),
450 dg(
451 "bynk.generics.type_arg_mismatch",
452 "Inferred or explicit type arguments conflict, have the wrong arity, target a non-generic function, or a type parameter shadows a declared type.",
453 &["call"],
454 ),
455 dg(
456 "bynk.generics.uninferable_type_arg",
457 "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.",
458 &["call"],
459 ),
460 dg(
461 "bynk.given.cross_context_unknown_capability",
462 "`given B.Cap` names a capability the consumed context does not export.",
463 &["given_clause"],
464 ),
465 dg(
466 "bynk.given.undeclared_capability",
467 "A handler uses a capability it did not declare with `given`.",
468 &["given_clause"],
469 ),
470 dg(
471 "bynk.given.unknown_capability",
472 "`given` names a capability that does not exist.",
473 &["given_clause"],
474 ),
475 dg(
476 "bynk.given.unused_capability",
477 "A `given` capability is never used (warning).",
478 &["given_clause"],
479 ),
480 d(
481 "bynk.held.branch_divergence",
482 "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).",
483 ),
484 d(
485 "bynk.held.consume_on_borrow",
486 "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).",
487 ),
488 d(
489 "bynk.held.leak",
490 "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).",
491 ),
492 d(
493 "bynk.held.query_accessor_on_held_map",
494 "A key-aware query accessor (`.entries`/`.keys`/`.values`) is used on a held `Map[K, Connection]` — a held resource is iterated with the broadcast ops (`forEach`/`parTraverse`), not a key query.",
495 ),
496 d(
497 "bynk.held.unsupported_map_op",
498 "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).",
499 ),
500 d(
501 "bynk.held.unsupported_storage",
502 "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).",
503 ),
504 d(
505 "bynk.held.use_after_consume",
506 "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).",
507 ),
508 d(
509 "bynk.history.not_an_agent",
510 "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).",
511 ),
512 d(
513 "bynk.history.not_generable",
514 "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).",
515 ),
516 d(
517 "bynk.history.outside_property",
518 "`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).",
519 ),
520 d(
521 "bynk.history.restates_invariant",
522 "A history property merely re-checks a guarantee a declared `invariant`/`transition` already enforces on every reached state (testing track slice 7, ADR 0155).",
523 ),
524 dg(
525 "bynk.http.body_on_get_or_delete",
526 "A GET or DELETE handler declares a `body` parameter.",
527 &["http_handler"],
528 ),
529 d(
530 "bynk.http.cache_bad_max_age",
531 "A `@cache` annotation's `maxAge` is missing or not a positive `Duration` literal.",
532 ),
533 d(
534 "bynk.http.cache_bad_scope",
535 "A `@cache` annotation's `scope` is not `public` or `private`.",
536 ),
537 d(
538 "bynk.http.cache_duplicate",
539 "A handler carries more than one `@cache` annotation.",
540 ),
541 d(
542 "bynk.http.cache_on_non_get",
543 "A `@cache` annotation is placed on a handler that is not `on http GET`.",
544 ),
545 d(
546 "bynk.http.cache_unknown_arg",
547 "A `@cache` annotation has an argument outside the closed set (`maxAge`/`scope`).",
548 ),
549 d(
550 "bynk.http.cors_invalid_field",
551 "A `cors` policy field (`headers`/`credentials`/`maxAge`) has the wrong value shape.",
552 ),
553 d(
554 "bynk.http.cors_invalid_origins",
555 "A `cors` policy's `origins` is missing, empty, or not a list of string literals.",
556 ),
557 d(
558 "bynk.http.cors_not_http",
559 "A `cors { }` policy appears on a service that is not `from http`.",
560 ),
561 d(
562 "bynk.http.cors_unknown_field",
563 "A `cors { }` policy declares a field outside the closed set.",
564 ),
565 d(
566 "bynk.http.cors_wildcard_credentials",
567 "A `cors` policy combines `credentials: true` with the wildcard origin `[\"*\"]`.",
568 ),
569 dg(
570 "bynk.http.duplicate_route",
571 "Two handlers share the same method and route.",
572 &["http_handler"],
573 ),
574 dg(
575 "bynk.http.extra_param",
576 "A handler parameter is neither a path parameter nor `body`.",
577 &["http_handler"],
578 ),
579 dg(
580 "bynk.http.invalid_path",
581 "An HTTP route path is malformed.",
582 &["http_handler"],
583 ),
584 d(
585 "bynk.http.limit_bad_max_body",
586 "A `@limit` annotation's `maxBody` is missing or not a positive `Int` literal.",
587 ),
588 d(
589 "bynk.http.limit_duplicate",
590 "A handler carries more than one `@limit` annotation.",
591 ),
592 d(
593 "bynk.http.limit_on_bodyless",
594 "A `@limit` annotation is placed on a handler that takes no body (a GET or DELETE).",
595 ),
596 d(
597 "bynk.http.limit_unknown_arg",
598 "A `@limit` annotation has an argument outside the closed set (`maxBody`).",
599 ),
600 d(
601 "bynk.http.limits_invalid_field",
602 "A `limits` policy field (`maxBody`) has the wrong value shape.",
603 ),
604 d(
605 "bynk.http.limits_not_http",
606 "A `limits { }` policy appears on a service that is not `from http`.",
607 ),
608 d(
609 "bynk.http.limits_unknown_field",
610 "A `limits { }` policy declares a field outside the closed set.",
611 ),
612 dg(
613 "bynk.http.path_param_not_stringy",
614 "A path parameter's type is not constructible from a string.",
615 &["http_handler"],
616 ),
617 dg(
618 "bynk.http.reserved_prefix",
619 "A route uses the reserved `/_bynk/` prefix.",
620 &["http_handler"],
621 ),
622 dg(
623 "bynk.http.return_not_effect_http_result",
624 "An HTTP handler does not return `Effect[HttpResult[T]]`.",
625 &["http_handler"],
626 ),
627 d(
628 "bynk.http.security_invalid_field",
629 "A `security` policy field (`hsts`/`nosniff`) has the wrong value shape.",
630 ),
631 d(
632 "bynk.http.security_not_http",
633 "A `security { }` policy appears on a service that is not `from http`.",
634 ),
635 d(
636 "bynk.http.security_unknown_field",
637 "A `security { }` policy declares a field outside the closed set.",
638 ),
639 dg(
640 "bynk.http.unbound_path_param",
641 "A `:name` route segment has no matching handler parameter.",
642 &["http_handler"],
643 ),
644 d(
645 "bynk.http.unknown_handler_annotation",
646 "A handler carries an annotation outside the closed set (`@cache`/`@limit`).",
647 ),
648 d(
649 "bynk.index.bad_argument",
650 "An `@indexed` argument is not a `by: <field>` label.",
651 ),
652 d(
653 "bynk.index.missing",
654 "A query filters a map by equality on a field that is not `@indexed` (a perf-hint warning).",
655 ),
656 d(
657 "bynk.index.unkeyable_key",
658 "An `@indexed(by: k)` field is not value-keyable.",
659 ),
660 d(
661 "bynk.index.unknown_key",
662 "An `@indexed(by: k)` field is not a field of the map's value type.",
663 ),
664 d(
665 "bynk.index.unused",
666 "A declared `@indexed(by: k)` is never used by an equality filter (a hygiene warning).",
667 ),
668 d(
669 "bynk.invariant.cross_agent_reference",
670 "An invariant predicate references another agent; invariants are per-agent.",
671 ),
672 d(
673 "bynk.invariant.duplicate_name",
674 "An agent declares two invariants with the same name.",
675 ),
676 d(
677 "bynk.invariant.impure_predicate",
678 "An invariant predicate uses an effectful or test-only construct.",
679 ),
680 d(
681 "bynk.invariant.not_bool",
682 "An invariant predicate does not have type `Bool`.",
683 ),
684 dg(
685 "bynk.lambda.unannotated_param",
686 "A lambda parameter has no type annotation in a position where no function type is expected to infer it from.",
687 &["lambda_expr"],
688 ),
689 dg(
690 "bynk.lex.bad_escape",
691 "An invalid escape sequence in a string literal.",
692 &["string_literal"],
693 ),
694 dg(
695 "bynk.lex.float_literal_overflow",
696 "A float literal does not fit a finite 64-bit float.",
697 &["float_literal"],
698 ),
699 dg(
700 "bynk.lex.integer_overflow",
701 "An integer literal is out of range.",
702 &["number_literal"],
703 ),
704 d(
705 "bynk.lex.unclosed_doc_block",
706 "A documentation block is not closed.",
707 ),
708 d(
709 "bynk.lex.unexpected_character",
710 "An unexpected character in the source.",
711 ),
712 dg(
713 "bynk.lex.unterminated_interpolation",
714 "An interpolation hole `\\(…)` is not closed on its line.",
715 &["string_literal"],
716 ),
717 dg(
718 "bynk.lex.unterminated_string",
719 "A string literal is not terminated.",
720 &["string_literal"],
721 ),
722 d(
723 "bynk.list.deprecated_function",
724 "A `bynk.list` free function (`map`/`filter`/`find`/`any`/`all`) is deprecated in favour of the `List` method form (warning; auto-fixable).",
725 ),
726 d(
727 "bynk.namespace.reserved",
728 "A user unit is named `bynk` or `bynk.*`; the `bynk` root is reserved for the toolchain.",
729 ),
730 d(
731 "bynk.observe.bad_count",
732 "An observation call count is not a non-negative integer literal (`called once` / `called <n> times`).",
733 ),
734 d(
735 "bynk.observe.impure_with",
736 "A `with` predicate uses an effectful or test-only construct; it must be pure.",
737 ),
738 d(
739 "bynk.observe.not_a_seam",
740 "An observation targets a capability the unit under test does not consume.",
741 ),
742 d(
743 "bynk.observe.outside_case",
744 "An observation appears outside a `case` body.",
745 ),
746 d(
747 "bynk.observe.trace_outside_test",
748 "`trace(Cap.op)` appears outside a `case` body.",
749 ),
750 d(
751 "bynk.observe.unknown_op",
752 "An observation names an operation the capability does not declare.",
753 ),
754 d(
755 "bynk.observe.with_not_bool",
756 "A `with` predicate does not have type `Bool`.",
757 ),
758 dg(
759 "bynk.parse.consumes_after_decls",
760 "`consumes` appears after other declarations.",
761 &["consumes_decl"],
762 ),
763 d(
764 "bynk.parse.dangling_handler_annotation",
765 "A handler-position annotation (e.g. `@cache`) is not followed by an `on` handler.",
766 ),
767 dg(
768 "bynk.parse.duplicate_cors",
769 "A service declares more than one `cors { }` policy.",
770 &["service_decl"],
771 ),
772 dg(
773 "bynk.parse.duplicate_limits",
774 "A service declares more than one `limits { }` policy.",
775 &["service_decl"],
776 ),
777 dg(
778 "bynk.parse.duplicate_security",
779 "A service declares more than one `security { }` policy.",
780 &["service_decl"],
781 ),
782 dg(
783 "bynk.parse.empty_agent",
784 "An `agent` body is empty.",
785 &["agent_decl"],
786 ),
787 dg(
788 "bynk.parse.empty_capability",
789 "A `capability` body is empty.",
790 &["capability_decl"],
791 ),
792 d(
793 "bynk.parse.empty_interpolation",
794 "An interpolation hole `\\(…)` contains no expression.",
795 ),
796 dg(
797 "bynk.parse.empty_match",
798 "A `match` has no arms.",
799 &["match_expr"],
800 ),
801 dg(
802 "bynk.parse.empty_service",
803 "A `service` body is empty.",
804 &["service_decl"],
805 ),
806 dg(
807 "bynk.parse.expected_agent_key",
808 "Expected a `key` declaration in an agent.",
809 &["agent_decl"],
810 ),
811 d(
812 "bynk.parse.expected_agent_storage",
813 "An agent declares no storage — it has no `store` fields.",
814 ),
815 dg(
816 "bynk.parse.expected_base_type",
817 "Expected a base type.",
818 &["base_type"],
819 ),
820 dg(
821 "bynk.parse.expected_capability_op",
822 "Expected a capability operation.",
823 &["capability_op"],
824 ),
825 d("bynk.parse.expected_expression", "Expected an expression."),
826 dg(
827 "bynk.parse.expected_handler",
828 "Expected a handler.",
829 &["handler"],
830 ),
831 d("bynk.parse.expected_item", "Expected a declaration."),
832 dg(
833 "bynk.parse.expected_predicate",
834 "Expected a refinement predicate.",
835 &["refinement"],
836 ),
837 dg(
838 "bynk.parse.expected_provider_op",
839 "Expected a provider operation.",
840 &["provider_op"],
841 ),
842 d("bynk.parse.expected_token", "Expected a specific token."),
843 d("bynk.parse.expected_type", "Expected a type."),
844 d(
845 "bynk.parse.expected_unit_header",
846 "Expected a `commons` or `context` header.",
847 ),
848 dg(
849 "bynk.parse.expected_visibility",
850 "Expected a visibility keyword.",
851 &["exports_decl"],
852 ),
853 dg(
854 "bynk.parse.exports_after_decls",
855 "`exports` appears after other declarations.",
856 &["exports_decl"],
857 ),
858 d(
859 "bynk.parse.extra_tokens",
860 "Unexpected tokens after an otherwise complete construct.",
861 ),
862 dg(
863 "bynk.parse.generic_arg_count",
864 "Wrong number of generic type arguments.",
865 &["generic_type_ref"],
866 ),
867 dg(
868 "bynk.parse.handler_in_agent",
869 "A protocol handler (`on GET`/`schedule`/`message`) was declared in an agent.",
870 &["handler"],
871 ),
872 d(
873 "bynk.parse.invariant_after_handler",
874 "An `invariant` was declared after a handler; invariants precede handlers.",
875 ),
876 dg(
877 "bynk.parse.malformed_float_literal",
878 "A float literal is missing a digit on one side of the `.` (`1.`, `.5`).",
879 &["float_literal"],
880 ),
881 dg(
882 "bynk.parse.non_associative",
883 "A non-associative operator was chained (e.g. `a == b == c`).",
884 &["binary_expr"],
885 ),
886 d(
887 "bynk.parse.orphan_doc_block",
888 "A documentation block is not attached to a declaration (warning).",
889 ),
890 dg(
891 "bynk.parse.reserved_keyword",
892 "A reserved keyword was used as an identifier.",
893 &["identifier"],
894 ),
895 dg(
896 "bynk.parse.self_outside_method",
897 "`self` used outside a method or handler.",
898 &["self_expr"],
899 ),
900 d(
901 "bynk.parse.storage_after_phase",
902 "Agent storage (`state` / `store`) is declared after the invariants or handlers.",
903 ),
904 d(
905 "bynk.parse.transition_after_handler",
906 "A `transition` is declared after an agent handler; step invariants precede the handlers.",
907 ),
908 d(
909 "bynk.parse.unexpected_adapter",
910 "An `adapter` appeared where it is not allowed.",
911 ),
912 dg(
913 "bynk.parse.unexpected_context",
914 "A `context` appeared where it is not allowed.",
915 &["context_decl"],
916 ),
917 d("bynk.parse.unexpected_eof", "Unexpected end of input."),
918 dg(
919 "bynk.parse.unexpected_suite",
920 "A `suite` appeared where it is not allowed.",
921 &["suite_decl"],
922 ),
923 d(
924 "bynk.parse.unknown_effect_method",
925 "An unknown method on `Effect`.",
926 ),
927 dg(
928 "bynk.parse.unknown_handler_kind",
929 "An unknown handler form (expected `call`, an HTTP method, `schedule`, or `message`).",
930 &["handler"],
931 ),
932 dg(
933 "bynk.parse.unknown_predicate",
934 "An unknown refinement predicate.",
935 &["predicate_name"],
936 ),
937 d(
938 "bynk.parse.unknown_tier",
939 "A `case`/`suite` `as <tier>` clause names something other than `unit`, `integration`, or `system`.",
940 ),
941 dg(
942 "bynk.parse.uses_after_decls",
943 "`uses` appears after other declarations.",
944 &["uses_decl"],
945 ),
946 d(
947 "bynk.project.file_and_directory",
948 "A unit exists as both a file and a directory.",
949 ),
950 d(
951 "bynk.project.inconsistent_commons_name",
952 "A source file's path does not match its declared name.",
953 ),
954 d(
955 "bynk.project.kind_conflict",
956 "A name is declared as both a commons and a context.",
957 ),
958 d(
959 "bynk.project.no_root",
960 "No project root could be determined.",
961 ),
962 d(
963 "bynk.project.no_sources",
964 "The project contains no source files.",
965 ),
966 d(
967 "bynk.project.read_failed",
968 "A source file could not be read.",
969 ),
970 dg(
971 "bynk.property.restates_refinement",
972 "A `property` merely re-checks a refinement its type already guarantees.",
973 &["for_all"],
974 ),
975 dg(
976 "bynk.property.where_not_bool",
977 "A `for all ... where` filter does not type to `Bool`.",
978 &["for_all"],
979 ),
980 dg(
981 "bynk.provider.dependency_cycle",
982 "Providers form a capability dependency cycle through `given`.",
983 &["provider_decl"],
984 ),
985 dg(
986 "bynk.provider.extra_operation",
987 "A `provides` block implements an operation not in the capability.",
988 &["provider_decl"],
989 ),
990 dg(
991 "bynk.provider.missing_operation",
992 "A `provides` block is missing a capability operation.",
993 &["provider_decl"],
994 ),
995 dg(
996 "bynk.provider.outside_context",
997 "`provides` was declared outside a context.",
998 &["provider_decl"],
999 ),
1000 dg(
1001 "bynk.provider.signature_mismatch",
1002 "A `provides` operation's signature does not match the capability.",
1003 &["provider_decl"],
1004 ),
1005 dg(
1006 "bynk.provider.unknown_capability",
1007 "`provides` names a capability that does not exist.",
1008 &["provider_decl"],
1009 ),
1010 d(
1011 "bynk.query.join_key_mismatch",
1012 "A `joinOn`/`leftJoin` left and right key function return different types.",
1013 ),
1014 dg(
1015 "bynk.query.sum_needs_numeric",
1016 "A `sum`/`average` key function does not return a numeric type (`Int`, `Float`, or `Duration`).",
1017 &[],
1018 ),
1019 dg(
1020 "bynk.queue.bad_params",
1021 "An `on message` handler does not take exactly one `message` parameter.",
1022 &["queue_handler"],
1023 ),
1024 dg(
1025 "bynk.queue.duplicate_consumer",
1026 "Two `on message` handlers consume the same queue.",
1027 &["queue_handler"],
1028 ),
1029 dg(
1030 "bynk.queue.invalid_name",
1031 "A `from queue(\"…\")` binding has an empty queue name.",
1032 &["queue_handler"],
1033 ),
1034 dg(
1035 "bynk.queue.return_not_queue_result",
1036 "An `on message` handler does not return `Effect[QueueResult]`.",
1037 &["handler"],
1038 ),
1039 dg(
1040 "bynk.record_spread.field_type_mismatch",
1041 "A record-spread override has the wrong type for the field.",
1042 &["record_spread"],
1043 ),
1044 dg(
1045 "bynk.record_spread.non_record_base",
1046 "The base of a record spread is not a record.",
1047 &["record_spread"],
1048 ),
1049 dg(
1050 "bynk.record_spread.type_mismatch",
1051 "A record spread's base is a different record type.",
1052 &["record_spread"],
1053 ),
1054 dg(
1055 "bynk.record_spread.unknown_field",
1056 "A record spread overrides a field the record does not have.",
1057 &["record_spread"],
1058 ),
1059 dg(
1060 "bynk.refine.literal_violates",
1061 "A literal does not satisfy the refined type's predicate.",
1062 &["refined_type"],
1063 ),
1064 dg(
1065 "bynk.requires.unpinned_dependency",
1066 "An adapter `binding … requires { … }` entry has an unpinned version range.",
1067 &["binding_decl"],
1068 ),
1069 d(
1070 "bynk.resolve.ambiguous_variant",
1071 "A variant name is ambiguous across several sum types.",
1072 ),
1073 dg(
1074 "bynk.resolve.arity_mismatch",
1075 "A function was called with the wrong number of arguments.",
1076 &["call"],
1077 ),
1078 d("bynk.resolve.duplicate_actor", "Two actors share a name."),
1079 dg(
1080 "bynk.resolve.duplicate_agent",
1081 "Two agents share a name.",
1082 &["agent_decl"],
1083 ),
1084 dg(
1085 "bynk.resolve.duplicate_capability",
1086 "Two capabilities share a name.",
1087 &["capability_decl"],
1088 ),
1089 dg(
1090 "bynk.resolve.duplicate_field",
1091 "A record declares a field twice.",
1092 &["record_type"],
1093 ),
1094 dg(
1095 "bynk.resolve.duplicate_field_init",
1096 "A record construction initialises a field twice.",
1097 &["record_construction"],
1098 ),
1099 dg(
1100 "bynk.resolve.duplicate_fn",
1101 "Two functions share a name.",
1102 &["fn_decl"],
1103 ),
1104 dg(
1105 "bynk.resolve.duplicate_method",
1106 "Two methods share a name.",
1107 &["fn_decl"],
1108 ),
1109 dg(
1110 "bynk.resolve.duplicate_param",
1111 "A parameter name is repeated.",
1112 &["param"],
1113 ),
1114 dg(
1115 "bynk.resolve.duplicate_provider",
1116 "A capability is provided more than once.",
1117 &["provider_decl"],
1118 ),
1119 dg(
1120 "bynk.resolve.duplicate_service",
1121 "Two services share a name.",
1122 &["service_decl"],
1123 ),
1124 dg(
1125 "bynk.resolve.duplicate_type",
1126 "Two types share a name.",
1127 &["type_decl"],
1128 ),
1129 dg(
1130 "bynk.resolve.duplicate_variant",
1131 "A sum type declares a variant twice.",
1132 &["sum_type"],
1133 ),
1134 d(
1135 "bynk.resolve.fn_without_call",
1136 "A function was referenced without being called.",
1137 ),
1138 dg(
1139 "bynk.resolve.let_shadows_fn",
1140 "A `let` binding shadows a function.",
1141 &["let_stmt"],
1142 ),
1143 dg(
1144 "bynk.resolve.let_shadows_type",
1145 "A `let` binding shadows a type.",
1146 &["let_stmt"],
1147 ),
1148 d(
1149 "bynk.resolve.method_unknown_type",
1150 "A method is defined on an unknown type.",
1151 ),
1152 dg(
1153 "bynk.resolve.missing_field",
1154 "A record construction omits a required field.",
1155 &["record_construction"],
1156 ),
1157 d(
1158 "bynk.resolve.name_conflict",
1159 "Two declarations share a name.",
1160 ),
1161 dg(
1162 "bynk.resolve.not_a_record_type",
1163 "Record syntax was used on a non-record type.",
1164 &["record_construction"],
1165 ),
1166 dg(
1167 "bynk.resolve.opaque_record_construction",
1168 "An opaque type was constructed with record syntax.",
1169 &["record_construction"],
1170 ),
1171 dg(
1172 "bynk.resolve.param_as_function",
1173 "A value (such as a parameter) was called as a function.",
1174 &["call"],
1175 ),
1176 dg(
1177 "bynk.resolve.recursive_record_field",
1178 "A record directly contains a field of its own type.",
1179 &["record_type"],
1180 ),
1181 dg(
1182 "bynk.resolve.self_outside_method",
1183 "`self` referenced outside a method or handler.",
1184 &["self_expr"],
1185 ),
1186 dg(
1187 "bynk.resolve.type_as_function",
1188 "A type name was called as if it were a function.",
1189 &["call"],
1190 ),
1191 d(
1192 "bynk.resolve.type_in_expr",
1193 "A type name was used where a value is expected.",
1194 ),
1195 dg(
1196 "bynk.resolve.unconsumed_context",
1197 "A context's service was called without a `consumes` declaration.",
1198 &["consumes_decl"],
1199 ),
1200 dg(
1201 "bynk.resolve.unknown_field",
1202 "Accessed a field the record does not have.",
1203 &["field_access"],
1204 ),
1205 dg(
1206 "bynk.resolve.unknown_function",
1207 "Called a function that does not exist.",
1208 &["call"],
1209 ),
1210 d(
1211 "bynk.resolve.unknown_name",
1212 "Referenced a name that is not in scope.",
1213 ),
1214 dg(
1215 "bynk.resolve.unknown_static_member",
1216 "Referenced an unknown static member (e.g. `T.x`).",
1217 &["field_access"],
1218 ),
1219 d(
1220 "bynk.resolve.unknown_type",
1221 "Referenced a type that does not exist.",
1222 ),
1223 dg(
1224 "bynk.send.in_pure_context",
1225 "A `~>` send was used in a pure (non-effectful) context.",
1226 &["effect_send_stmt"],
1227 ),
1228 dg(
1229 "bynk.send.non_effect",
1230 "A `~>` send was applied to a non-`Effect` value.",
1231 &["effect_send_stmt"],
1232 ),
1233 dg(
1234 "bynk.send.requires_unit",
1235 "A `~>` send targets an operation whose reply is not `Effect[()]`.",
1236 &["effect_send_stmt"],
1237 ),
1238 dg(
1239 "bynk.service.missing_from",
1240 "A `from`-less service has a handler other than `on call`.",
1241 &["service_decl"],
1242 ),
1243 dg(
1244 "bynk.service.mixed_protocols",
1245 "A service mixes handler forms that do not match its `from <protocol>`.",
1246 &["service_decl"],
1247 ),
1248 dg(
1249 "bynk.service.outside_context",
1250 "A `service` was declared outside a context.",
1251 &["service_decl"],
1252 ),
1253 dg(
1254 "bynk.service.return_not_effect",
1255 "A service handler's return type is not an `Effect`.",
1256 &["service_decl"],
1257 ),
1258 dg(
1259 "bynk.service.unknown_protocol",
1260 "A `from <protocol>` names an unknown protocol (e.g. a transport like Kafka).",
1261 &["service_decl"],
1262 ),
1263 d(
1264 "bynk.service.websocket_header",
1265 "The `from websocket` header is malformed — it binds frame types as `websocket(in: <type>, out: <type>)` (real-time track slice 3).",
1266 ),
1267 d(
1268 "bynk.service.websocket_multiple",
1269 "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).",
1270 ),
1271 d(
1272 "bynk.service.websocket_open_arity",
1273 "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).",
1274 ),
1275 d(
1276 "bynk.store.annotation_kind_mismatch",
1277 "A storage annotation is used on a kind it does not apply to (e.g. `@ttl` on a `Map`).",
1278 ),
1279 d(
1280 "bynk.store.annotation_unsupported",
1281 "A known storage annotation (`@ttl`/`@retain`/`@indexed`/`@bounded`) is used before the slice that supports it.",
1282 ),
1283 d(
1284 "bynk.store.cache_needs_clock",
1285 "A handler performs a `Cache` operation (TTL expiry reads the clock) without declaring `given Clock`.",
1286 ),
1287 d(
1288 "bynk.store.cache_ttl_required",
1289 "A `Cache` field is missing its required `@ttl(<duration>)` annotation (a keyed store with no expiry is a `Map`).",
1290 ),
1291 d(
1292 "bynk.store.kind_arity",
1293 "A storage kind was applied to the wrong number of type arguments (e.g. `Cell[A, B]`).",
1294 ),
1295 d(
1296 "bynk.store.kind_unsupported",
1297 "A known storage kind (`Queue`) is used before the slice that supports it.",
1298 ),
1299 d(
1300 "bynk.store.log_needs_clock",
1301 "A handler calls `Log.append` (which stamps the current time) without declaring `given Clock`.",
1302 ),
1303 d(
1304 "bynk.store.unknown_annotation",
1305 "A `store` field carries an annotation outside the closed `@indexed`/`@ttl`/`@retain`/`@bounded` set.",
1306 ),
1307 d(
1308 "bynk.store.unknown_kind",
1309 "A `store` field's type is not a known storage kind.",
1310 ),
1311 d(
1312 "bynk.store.unknown_map_accessor",
1313 "A `store Map` field access is not one of its query accessors (`entries`/`keys`/`values`).",
1314 ),
1315 d(
1316 "bynk.store.unknown_op",
1317 "A storage-`Map`/`Set` operation is not a recognised entry/membership method.",
1318 ),
1319 d(
1320 "bynk.stub.bad_sequence",
1321 "A `stub … returns each […]` sequence is malformed (e.g. empty).",
1322 ),
1323 d(
1324 "bynk.stub.not_a_seam",
1325 "A test `stub` overrides a capability the unit under test does not consume.",
1326 ),
1327 d(
1328 "bynk.stub.rhs_type",
1329 "A test `stub … returns <value>` right-hand side does not match the operation's return type.",
1330 ),
1331 d(
1332 "bynk.stub.unknown_op",
1333 "A test `stub` names an operation the capability does not declare.",
1334 ),
1335 dg(
1336 "bynk.suite.duplicate_case_name",
1337 "Two `case`s share a description.",
1338 &["case"],
1339 ),
1340 dg(
1341 "bynk.suite.unknown_target",
1342 "A `suite` targets a unit that does not exist.",
1343 &["suite_decl"],
1344 ),
1345 d(
1346 "bynk.target.browser_bundle_only",
1347 "The `browser` platform builds only the in-process `Bundle` topology; `--target workers` is not a browser build.",
1348 ),
1349 dg(
1350 "bynk.target.vendor_conflict",
1351 "One deployment unit's in-process closure uses platform-native capabilities from two mutually-exclusive platforms.",
1352 &["consumes_decl"],
1353 ),
1354 dg(
1355 "bynk.target.vendor_required",
1356 "A deployment unit uses a platform-native capability but the build selects another `--platform`.",
1357 &["consumes_decl"],
1358 ),
1359 d(
1360 "bynk.tier.property_has_tier",
1361 "A `property` carries an `as <tier>` clause; tiers are a `case`-only affordance.",
1362 ),
1363 d(
1364 "bynk.tier.system_needs_wire",
1365 "An `as system` test stands up fewer than two contexts; the system tier wires across contexts.",
1366 ),
1367 d(
1368 "bynk.transition.cross_agent_reference",
1369 "A transition predicate references another agent; step invariants are per-agent.",
1370 ),
1371 d(
1372 "bynk.transition.duplicate_name",
1373 "An agent declares two transitions with the same name.",
1374 ),
1375 d(
1376 "bynk.transition.impure_predicate",
1377 "A transition predicate uses an effectful or test-only construct; a step invariant must be pure.",
1378 ),
1379 d(
1380 "bynk.transition.no_step_reference",
1381 "A transition references neither `old` nor `new`; it constrains one state, so it is an `invariant`, not a step.",
1382 ),
1383 d(
1384 "bynk.transition.not_bool",
1385 "A transition predicate does not have type `Bool`.",
1386 ),
1387 d(
1388 "bynk.types.ambiguous_constructor",
1389 "`Ok`/`Err` is ambiguous between `Result` and `HttpResult`; qualify it.",
1390 ),
1391 dg(
1392 "bynk.types.argument_mismatch",
1393 "A function argument has the wrong type.",
1394 &["call"],
1395 ),
1396 d(
1397 "bynk.types.bytes_at_workers_boundary",
1398 "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).",
1399 ),
1400 dg(
1401 "bynk.types.call_arity",
1402 "A function value was applied with the wrong number of arguments.",
1403 &["call"],
1404 ),
1405 dg(
1406 "bynk.types.cannot_infer_option_type_param",
1407 "The value type of `None` could not be inferred.",
1408 &["none_expr"],
1409 ),
1410 d(
1411 "bynk.types.cannot_infer_result_type_params",
1412 "The type parameters of a `Result` could not be inferred.",
1413 ),
1414 d(
1415 "bynk.types.constructor_arity",
1416 "A variant constructor got the wrong number of arguments.",
1417 ),
1418 d(
1419 "bynk.types.constructor_base_mismatch",
1420 "A `.of` constructor was given an argument of the wrong base type.",
1421 ),
1422 dg(
1423 "bynk.types.duplicate_literal_arm",
1424 "A `match` has two arms for the same literal value.",
1425 &["match_arm"],
1426 ),
1427 dg(
1428 "bynk.types.duplicate_variant_arm",
1429 "A `match` has two arms for the same variant.",
1430 &["match_arm"],
1431 ),
1432 d(
1433 "bynk.types.embeds_ambiguous",
1434 "A type is embedded by more than one variant of a sum, so `?`'s conversion would be ambiguous.",
1435 ),
1436 d(
1437 "bynk.types.embeds_unknown_variant",
1438 "An `embeds … as V` clause names a variant the sum does not declare.",
1439 ),
1440 d(
1441 "bynk.types.embeds_variant_shape",
1442 "An `embeds E as V` target variant must have exactly one payload field, of type `E`.",
1443 ),
1444 dg(
1445 "bynk.types.empty_refinement",
1446 "A refinement admits no values (contradictory predicates).",
1447 &["refinement"],
1448 ),
1449 dg(
1450 "bynk.types.err_value_mismatch",
1451 "An `Err` payload has the wrong type.",
1452 &["err_expr"],
1453 ),
1454 dg(
1455 "bynk.types.field_access_on_non_record",
1456 "Field access on a value that is not a record.",
1457 &["field_access"],
1458 ),
1459 dg(
1460 "bynk.types.field_refinement_not_base",
1461 "An inline field refinement requires a base or refined type.",
1462 &["record_field"],
1463 ),
1464 dg(
1465 "bynk.types.field_value_mismatch",
1466 "A record field was given a value of the wrong type.",
1467 &["record_construction"],
1468 ),
1469 dg(
1470 "bynk.types.function_at_boundary",
1471 "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.",
1472 &["function_type_ref"],
1473 ),
1474 dg(
1475 "bynk.types.guard_not_bool",
1476 "A match-arm `if` guard is not a `Bool` expression.",
1477 &["match_arm"],
1478 ),
1479 d(
1480 "bynk.types.held_at_boundary",
1481 "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).",
1482 ),
1483 d(
1484 "bynk.types.held_not_comparable",
1485 "A held value (`Connection[F]`) is compared with `==`/`!=` — held values have identity, not value-equality (§2.9.3, real-time track slice 2).",
1486 ),
1487 dg(
1488 "bynk.types.if_branch_mismatch",
1489 "The branches of an `if` have different types.",
1490 &["if_expr"],
1491 ),
1492 dg(
1493 "bynk.types.if_non_bool_cond",
1494 "An `if` condition is not a `Bool`.",
1495 &["if_expr"],
1496 ),
1497 dg(
1498 "bynk.types.if_without_else_requires_unit",
1499 "An `if` with no `else` branch has a non-unit then-branch; the missing else defaults to `()`, so the branch must be `()` or `Effect[()]`.",
1500 &["if_expr"],
1501 ),
1502 d(
1503 "bynk.types.interpolation_non_scalar",
1504 "An interpolation hole holds a value with no string form.",
1505 ),
1506 dg(
1507 "bynk.types.invalid_regex",
1508 "A `Matches` predicate contains an invalid regular expression.",
1509 &["refinement"],
1510 ),
1511 dg(
1512 "bynk.types.inverted_range",
1513 "An `InRange` predicate has its bounds inverted.",
1514 &["refinement"],
1515 ),
1516 dg(
1517 "bynk.types.is_base_mismatch",
1518 "An `is` refinement check is applied to a value of the wrong base type.",
1519 &["is_expr"],
1520 ),
1521 dg(
1522 "bynk.types.is_literal_pattern",
1523 "A literal was used on the right of `is`; `is` tests type/refinement, not value equality (use `==`).",
1524 &["is_expr"],
1525 ),
1526 dg(
1527 "bynk.types.is_non_sum",
1528 "`is` was applied to a value that is not a sum type.",
1529 &["is_expr"],
1530 ),
1531 dg(
1532 "bynk.types.is_unknown_variant",
1533 "`is` names a variant the type does not have.",
1534 &["is_expr"],
1535 ),
1536 dg(
1537 "bynk.types.json_uncodable",
1538 "A `Json.encode`/`Json.decode` target type cannot pass through the typed JSON codec (functions, effects, error builtins).",
1539 &["method_call"],
1540 ),
1541 dg(
1542 "bynk.types.key_not_orderable",
1543 "A `sortBy`/`min`/`max` key function does not return an orderable type (`Int`, `Float`, `String`, `Duration`, or `Instant`).",
1544 &[],
1545 ),
1546 dg(
1547 "bynk.types.lambda_mismatch",
1548 "A lambda's parameter count, parameter annotations, or body type do not match the expected function type.",
1549 &["lambda_expr"],
1550 ),
1551 dg(
1552 "bynk.types.let_annotation_mismatch",
1553 "A `let` value does not match its type annotation.",
1554 &["let_stmt"],
1555 ),
1556 dg(
1557 "bynk.types.list_element_mismatch",
1558 "A list-literal element has a different type from the list's element type.",
1559 &["list_literal"],
1560 ),
1561 dg(
1562 "bynk.types.match_arm_mismatch",
1563 "A `match` arm has a different type from the others.",
1564 &["match_arm"],
1565 ),
1566 dg(
1567 "bynk.types.match_non_sum_discriminant",
1568 "`match` was applied to a value that is not a sum type.",
1569 &["match_expr"],
1570 ),
1571 dg(
1572 "bynk.types.method_arity",
1573 "A method was called with the wrong number of arguments.",
1574 &["method_call"],
1575 ),
1576 dg(
1577 "bynk.types.method_not_found",
1578 "Called a method the type does not have.",
1579 &["method_call"],
1580 ),
1581 dg(
1582 "bynk.types.method_on_non_named_type",
1583 "A method was called on a built-in type that has no methods.",
1584 &["method_call"],
1585 ),
1586 dg(
1587 "bynk.types.mixed_pattern_bindings",
1588 "A pattern mixes named and positional bindings.",
1589 &["variant_pattern"],
1590 ),
1591 dg(
1592 "bynk.types.negative_length",
1593 "A length predicate was given a negative value.",
1594 &["refinement"],
1595 ),
1596 dg(
1597 "bynk.types.no_numeric_coercion",
1598 "`Int` and `Float` were mixed without an explicit conversion — in an operation or in refinement bounds.",
1599 &["binary_expr", "refinement"],
1600 ),
1601 dg(
1602 "bynk.types.non_exhaustive_match",
1603 "A `match` does not cover every variant.",
1604 &["match_expr"],
1605 ),
1606 dg(
1607 "bynk.types.ok_value_mismatch",
1608 "An `Ok` payload has the wrong type.",
1609 &["ok_expr"],
1610 ),
1611 dg(
1612 "bynk.types.opaque_raw_outside",
1613 "`.raw` on an opaque type was used outside its defining commons.",
1614 &["field_access"],
1615 ),
1616 dg(
1617 "bynk.types.opaque_record_construction",
1618 "An opaque type was constructed with record syntax.",
1619 &["record_construction"],
1620 ),
1621 dg(
1622 "bynk.types.opaque_unsafe_outside",
1623 "`.unsafe` on an opaque type was used outside its defining context.",
1624 &["field_access"],
1625 ),
1626 dg(
1627 "bynk.types.pattern_arity",
1628 "A pattern binds the wrong number of payload fields.",
1629 &["variant_pattern"],
1630 ),
1631 dg(
1632 "bynk.types.pattern_type_mismatch",
1633 "A pattern's type does not match the matched value.",
1634 &["variant_pattern"],
1635 ),
1636 dg(
1637 "bynk.types.predicate_base_mismatch",
1638 "A predicate does not apply to the type's base (e.g. a string predicate on an `Int`).",
1639 &["refinement"],
1640 ),
1641 d(
1642 "bynk.types.query_at_boundary",
1643 "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).",
1644 ),
1645 dg(
1646 "bynk.types.question_error_mismatch",
1647 "`?` propagates an error type incompatible with the function's.",
1648 &["question_expr"],
1649 ),
1650 dg(
1651 "bynk.types.question_on_non_result",
1652 "`?` was applied to a non-`Result` value.",
1653 &["question_expr"],
1654 ),
1655 dg(
1656 "bynk.types.question_option_outside_http",
1657 "`?` lifts an `Option` only inside a handler returning `HttpResult` (`None` becomes `NotFound`); elsewhere use `.okOr(err)`.",
1658 &["question_expr"],
1659 ),
1660 dg(
1661 "bynk.types.question_outside_result",
1662 "`?` used in a function that does not return a `Result`.",
1663 &["question_expr"],
1664 ),
1665 d(
1666 "bynk.types.return_mismatch",
1667 "A returned value does not match the declared return type.",
1668 ),
1669 dg(
1670 "bynk.types.some_value_mismatch",
1671 "A `Some` payload has the wrong type.",
1672 &["some_expr"],
1673 ),
1674 d(
1675 "bynk.types.stream_at_boundary",
1676 "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).",
1677 ),
1678 d(
1679 "bynk.types.stream_not_comparable",
1680 "A `Stream` value is compared with `==`/`!=` — a stream is a live value-over-time source, not a comparable value (real-time track slice 0).",
1681 ),
1682 d(
1683 "bynk.types.type_mismatch",
1684 "Two types that were required to match did not.",
1685 ),
1686 dg(
1687 "bynk.types.uninferable_element_type",
1688 "An empty `[]` (or `List.empty()` / `Map.empty()`) has no expected type to infer its element type from.",
1689 &["list_literal"],
1690 ),
1691 dg(
1692 "bynk.types.unkeyable_distinct",
1693 "A `distinct`/`distinctBy` element or key is not value-keyable (`String`, `Int`, or a refined/opaque type over them).",
1694 &[],
1695 ),
1696 dg(
1697 "bynk.types.unkeyable_map_key",
1698 "A `Map` key type is not value-keyable (`String`, `Int`, or a refined/opaque type over them).",
1699 &["generic_type_ref"],
1700 ),
1701 dg(
1702 "bynk.types.unknown_field",
1703 "Referenced a field the record type does not declare.",
1704 &["field_access"],
1705 ),
1706 dg(
1707 "bynk.types.unknown_pattern_field",
1708 "A pattern names a field the variant does not have.",
1709 &["variant_pattern"],
1710 ),
1711 dg(
1712 "bynk.types.unknown_static_member",
1713 "Referenced an unknown static member on a type.",
1714 &["field_access"],
1715 ),
1716 dg(
1717 "bynk.types.unknown_variant_in_pattern",
1718 "A pattern names a variant the sum type does not have.",
1719 &["variant_pattern"],
1720 ),
1721 dg(
1722 "bynk.types.unreachable_arm",
1723 "A `match` arm is unreachable.",
1724 &["match_arm"],
1725 ),
1726 d(
1727 "bynk.types.variant_arity",
1728 "A variant constructor got the wrong number of payload values.",
1729 ),
1730 d(
1731 "bynk.types.variant_missing_payload",
1732 "A variant requiring a payload was used without one.",
1733 ),
1734 d(
1735 "bynk.types.variant_payload_mismatch",
1736 "A variant payload has the wrong type.",
1737 ),
1738 dg(
1739 "bynk.uses.name_conflict",
1740 "A `uses` name collides with another name.",
1741 &["uses_decl"],
1742 ),
1743 dg(
1744 "bynk.uses.self_reference",
1745 "A commons `uses` itself.",
1746 &["uses_decl"],
1747 ),
1748 dg(
1749 "bynk.uses.target_is_context",
1750 "`uses` targets a context instead of a commons.",
1751 &["uses_decl"],
1752 ),
1753 dg(
1754 "bynk.uses.unknown_commons",
1755 "`uses` names a commons that does not exist.",
1756 &["uses_decl"],
1757 ),
1758 dg(
1759 "bynk.val.agent_not_generable",
1760 "A `for all`/`Val` cannot generate an agent — fabricated agent states need not be reachable.",
1761 &["for_all"],
1762 ),
1763 dg(
1764 "bynk.val.arity",
1765 "`Val[T]` was given the wrong number of pin arguments.",
1766 &["val_expr"],
1767 ),
1768 dg(
1769 "bynk.val.literal_violates",
1770 "A pinned `Val[T]` value violates the type's refinement.",
1771 &["val_expr"],
1772 ),
1773 dg(
1774 "bynk.val.needs_pin",
1775 "A bare `Val[T]` cannot generate a value (e.g. a `Matches` string); pin one.",
1776 &["val_expr"],
1777 ),
1778 dg(
1779 "bynk.val.outside_test",
1780 "`Val[T]` was used outside a test case body.",
1781 &["val_expr"],
1782 ),
1783 dg(
1784 "bynk.val.pin_not_literal",
1785 "A `Val[T]` pin argument is not a compile-time literal.",
1786 &["val_expr"],
1787 ),
1788 dg(
1789 "bynk.val.pin_unsupported",
1790 "A pin was given for a type kind that does not support pinning.",
1791 &["val_expr"],
1792 ),
1793 dg(
1794 "bynk.val.unknown_type",
1795 "`Val[T]` names a type that does not resolve.",
1796 &["val_expr"],
1797 ),
1798 dg(
1799 "bynk.val.unsupported_kind",
1800 "`Val[T]` cannot fabricate a value for this kind of type.",
1801 &["val_expr"],
1802 ),
1803 d(
1804 "bynk.ws.message_frame_param",
1805 "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).",
1806 ),
1807 d(
1808 "bynk.ws.open_given_unsupported",
1809 "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).",
1810 ),
1811 d(
1812 "bynk.ws.open_transfer_shape",
1813 "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).",
1814 ),
1815 d(
1816 "bynk.ws.route_param_mismatch",
1817 "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).",
1818 ),
1819];
1820
1821const fn d(code: &'static str, summary: &'static str) -> DiagnosticInfo {
1823 DiagnosticInfo {
1824 code,
1825 summary,
1826 grammar_symbol: &[],
1827 }
1828}
1829
1830const fn dg(
1832 code: &'static str,
1833 summary: &'static str,
1834 grammar_symbol: &'static [&'static str],
1835) -> DiagnosticInfo {
1836 DiagnosticInfo {
1837 code,
1838 summary,
1839 grammar_symbol,
1840 }
1841}
1842
1843pub fn category(code: &str) -> &str {
1846 code.split('.').nth(1).unwrap_or("")
1847}
1848
1849fn category_title(cat: &str) -> &'static str {
1851 match cat {
1852 "agent" | "agents" => "Agents",
1853 "boundary" => "Boundaries",
1854 "capability" => "Capabilities",
1855 "consumes" => "Consumes",
1856 "context" => "Contexts",
1857 "contract" => "Contracts",
1858 "cron" => "Cron",
1859 "effect" => "Effects",
1860 "expect" => "Expectations",
1861 "exports" => "Exports",
1862 "given" => "Given capabilities",
1863 "http" => "HTTP",
1864 "lex" => "Lexer",
1865 "mock" => "Mocks (collaborators)",
1866 "observe" => "Observation",
1867 "parse" => "Parser",
1868 "project" => "Project",
1869 "property" => "Properties (generative tests)",
1870 "provider" => "Providers",
1871 "queue" => "Queue",
1872 "record_spread" => "Record spread",
1873 "refine" => "Refinement",
1874 "resolve" => "Resolution",
1875 "service" => "Services",
1876 "suite" => "Suites and cases",
1877 "transition" => "Transitions (step invariants)",
1878 "types" => "Type checking",
1879 "uses" => "Uses",
1880 "val" => "Value fabrication",
1881 _ => "Other",
1882 }
1883}
1884
1885pub fn render_markdown() -> String {
1889 use std::collections::BTreeMap;
1890
1891 let mut by_category: BTreeMap<&str, Vec<&DiagnosticInfo>> = BTreeMap::new();
1893 for info in REGISTRY {
1894 by_category
1895 .entry(category_title(category(info.code)))
1896 .or_default()
1897 .push(info);
1898 }
1899
1900 let mut out = String::new();
1901 out.push_str("# Diagnostic index\n\n");
1902 out.push_str(
1903 "<!-- GENERATED FILE — do not edit by hand.\n \
1904 Source: bynkc/src/diagnostics.rs (`render_markdown`).\n \
1905 Regenerate with: BYNK_BLESS=1 cargo test -p bynkc --test diagnostics_registry -->\n\n",
1906 );
1907 out.push_str(
1908 "Every diagnostic code the compiler can emit, with a one-line summary of \
1909 the cause, grouped by category. For step-by-step cause-and-fix guidance \
1910 on the most common ones, see the [troubleshooting guides](../troubleshooting/index.md).\n\n",
1911 );
1912 out.push_str(&format!(
1913 "There are **{}** codes in total.\n",
1914 REGISTRY.len()
1915 ));
1916
1917 for (title, infos) in &by_category {
1918 out.push_str(&format!("\n## {title}\n\n"));
1919 out.push_str("| Code | Summary | Construct |\n|---|---|---|\n");
1920 for info in infos {
1921 let construct = info
1926 .grammar_symbol
1927 .iter()
1928 .map(|sym| format!("[`{sym}`](grammar.md#rule-{sym})"))
1929 .collect::<Vec<_>>()
1930 .join(", ");
1931 out.push_str(&format!(
1932 "| `{}` | {} | {} |\n",
1933 info.code, info.summary, construct
1934 ));
1935 }
1936 }
1937
1938 out
1939}
1940
1941pub fn render_grammar_semantics_json() -> String {
1947 use std::collections::BTreeMap;
1948
1949 let mut by_symbol: BTreeMap<&str, Vec<&DiagnosticInfo>> = BTreeMap::new();
1952 for info in REGISTRY {
1953 for sym in info.grammar_symbol {
1954 by_symbol.entry(sym).or_default().push(info);
1955 }
1956 }
1957
1958 let mut map = serde_json::Map::new();
1959 map.insert(
1960 "_generated".to_string(),
1961 serde_json::Value::String(
1962 "Generated from the grammar_symbol field of bynkc/src/diagnostics.rs. \
1963 Do not edit by hand. Regenerate with: BYNK_BLESS=1 cargo test -p \
1964 bynkc --test diagnostics_registry"
1965 .to_string(),
1966 ),
1967 );
1968 for (sym, infos) in by_symbol {
1969 let arr: Vec<serde_json::Value> = infos
1970 .iter()
1971 .map(|info| serde_json::json!({ "code": info.code, "summary": info.summary }))
1972 .collect();
1973 map.insert(sym.to_string(), serde_json::Value::Array(arr));
1974 }
1975
1976 let mut s =
1977 serde_json::to_string_pretty(&serde_json::Value::Object(map)).expect("serialise semantics");
1978 s.push('\n');
1979 s
1980}