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.outside_context",
65 "An `actor` was declared outside a context (e.g. in a commons).",
66 ),
67 d(
68 "bynk.actor.refinement_base_unsupported",
69 "A refinement actor's base is not a `Bearer` actor (no claims to authorise against).",
70 ),
71 d(
72 "bynk.actor.refinement_in_sum",
73 "A refinement actor appears as a member of a multi-actor sum.",
74 ),
75 d(
76 "bynk.actor.refinement_predicate_unsupported",
77 "A refinement actor's `where` predicate is outside the closed claim-predicate set.",
78 ),
79 d(
80 "bynk.actor.scheme_not_admissible",
81 "An actor's scheme is not admissible on this handler's protocol.",
82 ),
83 d(
84 "bynk.actor.signature_identity_unsupported",
85 "A `Signature` actor declared an `identity`, which is not yet supported.",
86 ),
87 d(
88 "bynk.actor.signature_missing_header",
89 "A `Signature` actor does not name its signature header.",
90 ),
91 d(
92 "bynk.actor.signature_missing_secret",
93 "A `Signature` actor does not name its signing secret.",
94 ),
95 d(
96 "bynk.actor.signature_requires_body",
97 "A `Signature` handler does not take a `body` parameter.",
98 ),
99 d(
100 "bynk.actor.signature_tolerance_without_timestamp",
101 "A `Signature` actor set `tolerance` without a `timestamp` header.",
102 ),
103 d(
104 "bynk.actor.sum_requires_binder",
105 "A multi-actor sum `by` clause has no binder to match the resolved actor.",
106 ),
107 d(
108 "bynk.actor.unknown_actor",
109 "A handler's `by` clause names an actor that is not declared.",
110 ),
111 d(
112 "bynk.actor.unknown_scheme",
113 "An actor declares an authentication scheme that is not compiler-known.",
114 ),
115 d(
116 "bynk.actor.unreachable_sum_arm",
117 "A multi-actor sum has an arm unreachable after a catch-all (`None`) peer.",
118 ),
119 dg(
120 "bynk.adapter.consumes_context",
121 "An `adapter` consumed a context; adapter dependencies are adapter-to-adapter.",
122 &["consumes_decl"],
123 ),
124 dg(
125 "bynk.adapter.consumes_requires_selection",
126 "An `adapter` used a whole-unit or aliased `consumes`; adapters must select capabilities with `consumes U { Cap, … }`.",
127 &["consumes_decl"],
128 ),
129 dg(
130 "bynk.adapter.disallowed_item",
131 "An `adapter` declared a `service`, `agent`, or other item it may not contain.",
132 &["adapter_decl"],
133 ),
134 dg(
135 "bynk.adapter.duplicate_binding",
136 "An `adapter` declared more than one `binding` clause.",
137 &["binding_decl"],
138 ),
139 dg(
140 "bynk.adapter.no_binding",
141 "An `adapter` declares an external provider but no `binding` module to supply it.",
142 &["adapter_decl"],
143 ),
144 dg(
145 "bynk.adapter.provider_has_body",
146 "A provider inside an `adapter` has a Bynk body; adapter providers must be external.",
147 &["provider_decl"],
148 ),
149 dg(
150 "bynk.agent.construction_arity",
151 "An agent was constructed with the wrong number of key arguments.",
152 &["agent_decl"],
153 ),
154 dg(
155 "bynk.agent.handler_arity",
156 "An agent handler was called with the wrong number of arguments.",
157 &["agent_decl"],
158 ),
159 dg(
160 "bynk.agent.handler_not_found",
161 "Called a handler the agent does not declare.",
162 &["agent_decl"],
163 ),
164 dg(
165 "bynk.agent.key_mismatch",
166 "An agent key argument has the wrong type.",
167 &["agent_decl"],
168 ),
169 dg(
170 "bynk.agent.outside_context",
171 "An `agent` was declared outside a context.",
172 &["agent_decl"],
173 ),
174 dg(
175 "bynk.agent.return_not_effect",
176 "An agent handler's return type is not an `Effect`.",
177 &["agent_decl"],
178 ),
179 dg(
180 "bynk.agents.bad_state_initialiser",
181 "An agent `store` field initialiser is not a static value of the field's type.",
182 &["store_field"],
183 ),
184 dg(
185 "bynk.agents.non_zeroable_state_field",
186 "An agent `store` field has no initialiser and no implicit zero value.",
187 &["store_field"],
188 ),
189 d(
190 "bynk.boundary.structural_mismatch",
191 "Data crossing a context boundary did not match the expected shape.",
192 ),
193 dg(
194 "bynk.capability.op_arity",
195 "A capability operation was called with the wrong number of arguments.",
196 &["capability_decl"],
197 ),
198 dg(
199 "bynk.capability.outside_context",
200 "A `capability` was declared outside a context.",
201 &["capability_decl"],
202 ),
203 dg(
204 "bynk.capability.unknown_operation",
205 "Referenced an operation the capability does not declare.",
206 &["capability_decl"],
207 ),
208 d(
209 "bynk.cell.invalid_target",
210 "A `:=` write targets something that is not a `store Cell` field.",
211 ),
212 d(
213 "bynk.cell.self_reference",
214 "A `:=` right-hand side reads the cell being written (a read-modify-write); use `.update`.",
215 ),
216 dg(
217 "bynk.consumes.alias_conflict",
218 "Two `consumes` aliases collide.",
219 &["consumes_decl"],
220 ),
221 dg(
222 "bynk.consumes.capability_name_clash",
223 "Two flattened `consumes U { Cap }` capabilities collide, or one clashes with a local capability.",
224 &["consumes_decl"],
225 ),
226 dg(
227 "bynk.consumes.in_commons",
228 "`consumes` appears in a `commons` (it is only valid in a context).",
229 &["consumes_decl"],
230 ),
231 dg(
232 "bynk.consumes.name_conflict",
233 "A `consumes` name collides with another name in scope.",
234 &["consumes_decl"],
235 ),
236 dg(
237 "bynk.consumes.self_reference",
238 "A context `consumes` itself.",
239 &["consumes_decl"],
240 ),
241 dg(
242 "bynk.consumes.service_arity",
243 "A consumed service was called with the wrong number of arguments.",
244 &["consumes_decl"],
245 ),
246 dg(
247 "bynk.consumes.target_is_commons",
248 "`consumes` targets a `commons` instead of a context.",
249 &["consumes_decl"],
250 ),
251 dg(
252 "bynk.consumes.unknown_context",
253 "`consumes` names a context that does not exist.",
254 &["consumes_decl"],
255 ),
256 dg(
257 "bynk.consumes.unknown_service",
258 "Called a service the consumed context does not declare.",
259 &["consumes_decl"],
260 ),
261 d(
262 "bynk.context.consumes_cycle",
263 "Contexts form a `consumes` dependency cycle.",
264 ),
265 d(
266 "bynk.context.external_construction",
267 "A context-owned type was constructed from outside that context.",
268 ),
269 dg(
270 "bynk.context.external_provider",
271 "A bodiless (external) provider was declared outside an `adapter`.",
272 &["provider_decl"],
273 ),
274 d(
275 "bynk.context.opaque_inspection",
276 "An opaquely-exported type was inspected from outside its context.",
277 ),
278 d(
279 "bynk.contract.duplicate_name",
280 "A function declares two contract clauses (`requires`/`ensures`) with the same name.",
281 ),
282 d(
283 "bynk.contract.impure_predicate",
284 "A contract predicate uses an effectful or test-only construct; a contract clause must be pure.",
285 ),
286 d(
287 "bynk.contract.not_bool",
288 "A contract predicate does not have type `Bool`.",
289 ),
290 d(
291 "bynk.contract.restated_by_test",
292 "A `case`/`property` merely restates a contract clause already declared at the function; the test is redundant.",
293 ),
294 d(
295 "bynk.contract.result_in_requires",
296 "A precondition (`requires`) references `result`; the return value is only in scope inside an `ensures`.",
297 ),
298 dg(
299 "bynk.cron.bad_params",
300 "A cron handler declares more than one parameter, or a non-`Int` one.",
301 &["cron_handler"],
302 ),
303 dg(
304 "bynk.cron.duplicate_schedule",
305 "Two cron handlers declare the same schedule.",
306 &["cron_handler"],
307 ),
308 dg(
309 "bynk.cron.invalid_schedule",
310 "A cron expression is not five whitespace-separated fields.",
311 &["cron_handler"],
312 ),
313 dg(
314 "bynk.cron.return_not_effect_result",
315 "A cron handler does not return `Effect[Result[(), E]]`.",
316 &["cron_handler"],
317 ),
318 d(
319 "bynk.duration.literal_overflow",
320 "A `Duration` literal (`<int>.<unit>`) exceeds the representable millisecond range.",
321 ),
322 dg(
323 "bynk.effect.bind_in_pure_context",
324 "An `<-` bind was used in a pure (non-effectful) context.",
325 &["effect_let_stmt"],
326 ),
327 dg(
328 "bynk.effect.bind_on_non_effect",
329 "An `<-` bind was applied to a non-`Effect` value.",
330 &["effect_let_stmt"],
331 ),
332 d(
333 "bynk.effect.capability_in_pure_context",
334 "A capability was used in a pure context.",
335 ),
336 d(
337 "bynk.effect.cross_context_in_pure_context",
338 "A cross-context call was made in a pure context.",
339 ),
340 dg(
341 "bynk.effect.fn_value_in_pure_context",
342 "An effectful function value was called in a pure context; like a capability call, it is legal only where the enclosing body is effectful.",
343 &["call"],
344 ),
345 dg(
346 "bynk.expect.not_bool",
347 "`expect` was given a non-`Bool` predicate.",
348 &["expect_expr"],
349 ),
350 dg(
351 "bynk.expect.outside_case",
352 "`expect` was used outside a `case` body.",
353 &["expect_expr"],
354 ),
355 dg(
356 "bynk.exports.capability_not_provided",
357 "An exported capability has no provider in its context.",
358 &["exports_decl"],
359 ),
360 dg(
361 "bynk.exports.conflicting_visibility",
362 "A type is exported with conflicting visibilities.",
363 &["exports_decl"],
364 ),
365 dg(
366 "bynk.exports.duplicate_export",
367 "The same name is exported more than once.",
368 &["exports_decl"],
369 ),
370 dg(
371 "bynk.exports.duplicate_in_clause",
372 "A name appears twice in one `exports` clause.",
373 &["exports_decl"],
374 ),
375 dg(
376 "bynk.exports.undeclared_capability",
377 "`exports capability` names a capability that is not declared.",
378 &["exports_decl"],
379 ),
380 dg(
381 "bynk.exports.undeclared_type",
382 "`exports` names a type that is not declared.",
383 &["exports_decl"],
384 ),
385 dg(
386 "bynk.generics.no_bounds",
387 "A type parameter carries a bound (`[A: …]`); bounded generics are not in v0.20a.",
388 &["fn_decl"],
389 ),
390 dg(
391 "bynk.generics.no_generic_types",
392 "A `type` declaration carries a type-parameter list; generic type declarations are not in v0.20a (type parameters belong to functions).",
393 &["type_decl"],
394 ),
395 dg(
396 "bynk.generics.type_arg_mismatch",
397 "Inferred or explicit type arguments conflict, have the wrong arity, target a non-generic function, or a type parameter shadows a declared type.",
398 &["call"],
399 ),
400 dg(
401 "bynk.generics.uninferable_type_arg",
402 "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.",
403 &["call"],
404 ),
405 dg(
406 "bynk.given.cross_context_unknown_capability",
407 "`given B.Cap` names a capability the consumed context does not export.",
408 &["given_clause"],
409 ),
410 dg(
411 "bynk.given.undeclared_capability",
412 "A handler uses a capability it did not declare with `given`.",
413 &["given_clause"],
414 ),
415 dg(
416 "bynk.given.unknown_capability",
417 "`given` names a capability that does not exist.",
418 &["given_clause"],
419 ),
420 dg(
421 "bynk.given.unused_capability",
422 "A `given` capability is never used (warning).",
423 &["given_clause"],
424 ),
425 d(
426 "bynk.held.branch_divergence",
427 "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).",
428 ),
429 d(
430 "bynk.held.consume_on_borrow",
431 "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).",
432 ),
433 d(
434 "bynk.held.leak",
435 "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).",
436 ),
437 d(
438 "bynk.held.unsupported_map_op",
439 "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).",
440 ),
441 d(
442 "bynk.held.unsupported_storage",
443 "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).",
444 ),
445 d(
446 "bynk.held.use_after_consume",
447 "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).",
448 ),
449 d(
450 "bynk.history.not_an_agent",
451 "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).",
452 ),
453 d(
454 "bynk.history.not_generable",
455 "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).",
456 ),
457 d(
458 "bynk.history.outside_property",
459 "`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).",
460 ),
461 d(
462 "bynk.history.restates_invariant",
463 "A history property merely re-checks a guarantee a declared `invariant`/`transition` already enforces on every reached state (testing track slice 7, ADR 0155).",
464 ),
465 dg(
466 "bynk.http.body_on_get_or_delete",
467 "A GET or DELETE handler declares a `body` parameter.",
468 &["http_handler"],
469 ),
470 d(
471 "bynk.http.cache_bad_max_age",
472 "A `@cache` annotation's `maxAge` is missing or not a positive `Duration` literal.",
473 ),
474 d(
475 "bynk.http.cache_bad_scope",
476 "A `@cache` annotation's `scope` is not `public` or `private`.",
477 ),
478 d(
479 "bynk.http.cache_duplicate",
480 "A handler carries more than one `@cache` annotation.",
481 ),
482 d(
483 "bynk.http.cache_on_non_get",
484 "A `@cache` annotation is placed on a handler that is not `on http GET`.",
485 ),
486 d(
487 "bynk.http.cache_unknown_arg",
488 "A `@cache` annotation has an argument outside the closed set (`maxAge`/`scope`).",
489 ),
490 d(
491 "bynk.http.cors_invalid_field",
492 "A `cors` policy field (`headers`/`credentials`/`maxAge`) has the wrong value shape.",
493 ),
494 d(
495 "bynk.http.cors_invalid_origins",
496 "A `cors` policy's `origins` is missing, empty, or not a list of string literals.",
497 ),
498 d(
499 "bynk.http.cors_not_http",
500 "A `cors { }` policy appears on a service that is not `from http`.",
501 ),
502 d(
503 "bynk.http.cors_unknown_field",
504 "A `cors { }` policy declares a field outside the closed set.",
505 ),
506 d(
507 "bynk.http.cors_wildcard_credentials",
508 "A `cors` policy combines `credentials: true` with the wildcard origin `[\"*\"]`.",
509 ),
510 dg(
511 "bynk.http.duplicate_route",
512 "Two handlers share the same method and route.",
513 &["http_handler"],
514 ),
515 dg(
516 "bynk.http.extra_param",
517 "A handler parameter is neither a path parameter nor `body`.",
518 &["http_handler"],
519 ),
520 dg(
521 "bynk.http.invalid_path",
522 "An HTTP route path is malformed.",
523 &["http_handler"],
524 ),
525 d(
526 "bynk.http.limit_bad_max_body",
527 "A `@limit` annotation's `maxBody` is missing or not a positive `Int` literal.",
528 ),
529 d(
530 "bynk.http.limit_duplicate",
531 "A handler carries more than one `@limit` annotation.",
532 ),
533 d(
534 "bynk.http.limit_on_bodyless",
535 "A `@limit` annotation is placed on a handler that takes no body (a GET or DELETE).",
536 ),
537 d(
538 "bynk.http.limit_unknown_arg",
539 "A `@limit` annotation has an argument outside the closed set (`maxBody`).",
540 ),
541 d(
542 "bynk.http.limits_invalid_field",
543 "A `limits` policy field (`maxBody`) has the wrong value shape.",
544 ),
545 d(
546 "bynk.http.limits_not_http",
547 "A `limits { }` policy appears on a service that is not `from http`.",
548 ),
549 d(
550 "bynk.http.limits_unknown_field",
551 "A `limits { }` policy declares a field outside the closed set.",
552 ),
553 dg(
554 "bynk.http.path_param_not_stringy",
555 "A path parameter's type is not constructible from a string.",
556 &["http_handler"],
557 ),
558 dg(
559 "bynk.http.reserved_prefix",
560 "A route uses the reserved `/_bynk/` prefix.",
561 &["http_handler"],
562 ),
563 dg(
564 "bynk.http.return_not_effect_http_result",
565 "An HTTP handler does not return `Effect[HttpResult[T]]`.",
566 &["http_handler"],
567 ),
568 d(
569 "bynk.http.security_invalid_field",
570 "A `security` policy field (`hsts`/`nosniff`) has the wrong value shape.",
571 ),
572 d(
573 "bynk.http.security_not_http",
574 "A `security { }` policy appears on a service that is not `from http`.",
575 ),
576 d(
577 "bynk.http.security_unknown_field",
578 "A `security { }` policy declares a field outside the closed set.",
579 ),
580 dg(
581 "bynk.http.unbound_path_param",
582 "A `:name` route segment has no matching handler parameter.",
583 &["http_handler"],
584 ),
585 d(
586 "bynk.http.unknown_handler_annotation",
587 "A handler carries an annotation outside the closed set (`@cache`/`@limit`).",
588 ),
589 d(
590 "bynk.index.bad_argument",
591 "An `@indexed` argument is not a `by: <field>` label.",
592 ),
593 d(
594 "bynk.index.missing",
595 "A query filters a map by equality on a field that is not `@indexed` (a perf-hint warning).",
596 ),
597 d(
598 "bynk.index.unkeyable_key",
599 "An `@indexed(by: k)` field is not value-keyable.",
600 ),
601 d(
602 "bynk.index.unknown_key",
603 "An `@indexed(by: k)` field is not a field of the map's value type.",
604 ),
605 d(
606 "bynk.index.unused",
607 "A declared `@indexed(by: k)` is never used by an equality filter (a hygiene warning).",
608 ),
609 d(
610 "bynk.invariant.cross_agent_reference",
611 "An invariant predicate references another agent; invariants are per-agent.",
612 ),
613 d(
614 "bynk.invariant.duplicate_name",
615 "An agent declares two invariants with the same name.",
616 ),
617 d(
618 "bynk.invariant.impure_predicate",
619 "An invariant predicate uses an effectful or test-only construct.",
620 ),
621 d(
622 "bynk.invariant.not_bool",
623 "An invariant predicate does not have type `Bool`.",
624 ),
625 dg(
626 "bynk.lambda.unannotated_param",
627 "A lambda parameter has no type annotation in a position where no function type is expected to infer it from.",
628 &["lambda_expr"],
629 ),
630 dg(
631 "bynk.lex.bad_escape",
632 "An invalid escape sequence in a string literal.",
633 &["string_literal"],
634 ),
635 dg(
636 "bynk.lex.float_literal_overflow",
637 "A float literal does not fit a finite 64-bit float.",
638 &["float_literal"],
639 ),
640 dg(
641 "bynk.lex.integer_overflow",
642 "An integer literal is out of range.",
643 &["number_literal"],
644 ),
645 d(
646 "bynk.lex.unclosed_doc_block",
647 "A documentation block is not closed.",
648 ),
649 d(
650 "bynk.lex.unexpected_character",
651 "An unexpected character in the source.",
652 ),
653 dg(
654 "bynk.lex.unterminated_interpolation",
655 "An interpolation hole `\\(…)` is not closed on its line.",
656 &["string_literal"],
657 ),
658 dg(
659 "bynk.lex.unterminated_string",
660 "A string literal is not terminated.",
661 &["string_literal"],
662 ),
663 d(
664 "bynk.list.deprecated_function",
665 "A `bynk.list` free function (`map`/`filter`/`find`/`any`/`all`) is deprecated in favour of the `List` method form (warning; auto-fixable).",
666 ),
667 d(
668 "bynk.namespace.reserved",
669 "A user unit is named `bynk` or `bynk.*`; the `bynk` root is reserved for the toolchain.",
670 ),
671 d(
672 "bynk.observe.bad_count",
673 "An observation call count is not a non-negative integer literal (`called once` / `called <n> times`).",
674 ),
675 d(
676 "bynk.observe.impure_with",
677 "A `with` predicate uses an effectful or test-only construct; it must be pure.",
678 ),
679 d(
680 "bynk.observe.not_a_seam",
681 "An observation targets a capability the unit under test does not consume.",
682 ),
683 d(
684 "bynk.observe.outside_case",
685 "An observation appears outside a `case` body.",
686 ),
687 d(
688 "bynk.observe.trace_outside_test",
689 "`trace(Cap.op)` appears outside a `case` body.",
690 ),
691 d(
692 "bynk.observe.unknown_op",
693 "An observation names an operation the capability does not declare.",
694 ),
695 d(
696 "bynk.observe.with_not_bool",
697 "A `with` predicate does not have type `Bool`.",
698 ),
699 dg(
700 "bynk.parse.consumes_after_decls",
701 "`consumes` appears after other declarations.",
702 &["consumes_decl"],
703 ),
704 d(
705 "bynk.parse.dangling_handler_annotation",
706 "A handler-position annotation (e.g. `@cache`) is not followed by an `on` handler.",
707 ),
708 dg(
709 "bynk.parse.duplicate_cors",
710 "A service declares more than one `cors { }` policy.",
711 &["service_decl"],
712 ),
713 dg(
714 "bynk.parse.duplicate_limits",
715 "A service declares more than one `limits { }` policy.",
716 &["service_decl"],
717 ),
718 dg(
719 "bynk.parse.duplicate_security",
720 "A service declares more than one `security { }` policy.",
721 &["service_decl"],
722 ),
723 dg(
724 "bynk.parse.empty_agent",
725 "An `agent` body is empty.",
726 &["agent_decl"],
727 ),
728 dg(
729 "bynk.parse.empty_capability",
730 "A `capability` body is empty.",
731 &["capability_decl"],
732 ),
733 d(
734 "bynk.parse.empty_interpolation",
735 "An interpolation hole `\\(…)` contains no expression.",
736 ),
737 dg(
738 "bynk.parse.empty_match",
739 "A `match` has no arms.",
740 &["match_expr"],
741 ),
742 dg(
743 "bynk.parse.empty_service",
744 "A `service` body is empty.",
745 &["service_decl"],
746 ),
747 dg(
748 "bynk.parse.expected_agent_key",
749 "Expected a `key` declaration in an agent.",
750 &["agent_decl"],
751 ),
752 d(
753 "bynk.parse.expected_agent_storage",
754 "An agent declares no storage — it has no `store` fields.",
755 ),
756 dg(
757 "bynk.parse.expected_base_type",
758 "Expected a base type.",
759 &["base_type"],
760 ),
761 dg(
762 "bynk.parse.expected_capability_op",
763 "Expected a capability operation.",
764 &["capability_op"],
765 ),
766 d("bynk.parse.expected_expression", "Expected an expression."),
767 dg(
768 "bynk.parse.expected_handler",
769 "Expected a handler.",
770 &["handler"],
771 ),
772 d("bynk.parse.expected_item", "Expected a declaration."),
773 dg(
774 "bynk.parse.expected_predicate",
775 "Expected a refinement predicate.",
776 &["refinement"],
777 ),
778 dg(
779 "bynk.parse.expected_provider_op",
780 "Expected a provider operation.",
781 &["provider_op"],
782 ),
783 d("bynk.parse.expected_token", "Expected a specific token."),
784 d("bynk.parse.expected_type", "Expected a type."),
785 d(
786 "bynk.parse.expected_unit_header",
787 "Expected a `commons` or `context` header.",
788 ),
789 dg(
790 "bynk.parse.expected_visibility",
791 "Expected a visibility keyword.",
792 &["exports_decl"],
793 ),
794 dg(
795 "bynk.parse.exports_after_decls",
796 "`exports` appears after other declarations.",
797 &["exports_decl"],
798 ),
799 d(
800 "bynk.parse.extra_tokens",
801 "Unexpected tokens after an otherwise complete construct.",
802 ),
803 dg(
804 "bynk.parse.generic_arg_count",
805 "Wrong number of generic type arguments.",
806 &["generic_type_ref"],
807 ),
808 dg(
809 "bynk.parse.handler_in_agent",
810 "A protocol handler (`on GET`/`schedule`/`message`) was declared in an agent.",
811 &["handler"],
812 ),
813 d(
814 "bynk.parse.invariant_after_handler",
815 "An `invariant` was declared after a handler; invariants precede handlers.",
816 ),
817 dg(
818 "bynk.parse.malformed_float_literal",
819 "A float literal is missing a digit on one side of the `.` (`1.`, `.5`).",
820 &["float_literal"],
821 ),
822 dg(
823 "bynk.parse.non_associative",
824 "A non-associative operator was chained (e.g. `a == b == c`).",
825 &["binary_expr"],
826 ),
827 d(
828 "bynk.parse.orphan_doc_block",
829 "A documentation block is not attached to a declaration (warning).",
830 ),
831 dg(
832 "bynk.parse.reserved_keyword",
833 "A reserved keyword was used as an identifier.",
834 &["identifier"],
835 ),
836 dg(
837 "bynk.parse.self_outside_method",
838 "`self` used outside a method or handler.",
839 &["self_expr"],
840 ),
841 d(
842 "bynk.parse.storage_after_phase",
843 "Agent storage (`state` / `store`) is declared after the invariants or handlers.",
844 ),
845 d(
846 "bynk.parse.transition_after_handler",
847 "A `transition` is declared after an agent handler; step invariants precede the handlers.",
848 ),
849 d(
850 "bynk.parse.unexpected_adapter",
851 "An `adapter` appeared where it is not allowed.",
852 ),
853 dg(
854 "bynk.parse.unexpected_context",
855 "A `context` appeared where it is not allowed.",
856 &["context_decl"],
857 ),
858 d("bynk.parse.unexpected_eof", "Unexpected end of input."),
859 dg(
860 "bynk.parse.unexpected_suite",
861 "A `suite` appeared where it is not allowed.",
862 &["suite_decl"],
863 ),
864 d(
865 "bynk.parse.unknown_effect_method",
866 "An unknown method on `Effect`.",
867 ),
868 dg(
869 "bynk.parse.unknown_handler_kind",
870 "An unknown handler form (expected `call`, an HTTP method, `schedule`, or `message`).",
871 &["handler"],
872 ),
873 dg(
874 "bynk.parse.unknown_predicate",
875 "An unknown refinement predicate.",
876 &["predicate_name"],
877 ),
878 d(
879 "bynk.parse.unknown_tier",
880 "A `case`/`suite` `as <tier>` clause names something other than `unit`, `integration`, or `system`.",
881 ),
882 dg(
883 "bynk.parse.uses_after_decls",
884 "`uses` appears after other declarations.",
885 &["uses_decl"],
886 ),
887 d(
888 "bynk.project.file_and_directory",
889 "A unit exists as both a file and a directory.",
890 ),
891 d(
892 "bynk.project.inconsistent_commons_name",
893 "A source file's path does not match its declared name.",
894 ),
895 d(
896 "bynk.project.kind_conflict",
897 "A name is declared as both a commons and a context.",
898 ),
899 d(
900 "bynk.project.no_root",
901 "No project root could be determined.",
902 ),
903 d(
904 "bynk.project.no_sources",
905 "The project contains no source files.",
906 ),
907 d(
908 "bynk.project.read_failed",
909 "A source file could not be read.",
910 ),
911 dg(
912 "bynk.property.restates_refinement",
913 "A `property` merely re-checks a refinement its type already guarantees.",
914 &["for_all"],
915 ),
916 dg(
917 "bynk.property.where_not_bool",
918 "A `for all ... where` filter does not type to `Bool`.",
919 &["for_all"],
920 ),
921 dg(
922 "bynk.provider.dependency_cycle",
923 "Providers form a capability dependency cycle through `given`.",
924 &["provider_decl"],
925 ),
926 dg(
927 "bynk.provider.extra_operation",
928 "A `provides` block implements an operation not in the capability.",
929 &["provider_decl"],
930 ),
931 dg(
932 "bynk.provider.missing_operation",
933 "A `provides` block is missing a capability operation.",
934 &["provider_decl"],
935 ),
936 dg(
937 "bynk.provider.outside_context",
938 "`provides` was declared outside a context.",
939 &["provider_decl"],
940 ),
941 dg(
942 "bynk.provider.signature_mismatch",
943 "A `provides` operation's signature does not match the capability.",
944 &["provider_decl"],
945 ),
946 dg(
947 "bynk.provider.unknown_capability",
948 "`provides` names a capability that does not exist.",
949 &["provider_decl"],
950 ),
951 d(
952 "bynk.provides.bad_sequence",
953 "A `provides … returns each […]` sequence is malformed (e.g. empty).",
954 ),
955 d(
956 "bynk.provides.not_a_seam",
957 "A test `provides` overrides a capability the unit under test does not consume.",
958 ),
959 d(
960 "bynk.provides.rhs_type",
961 "A test `provides … returns <value>` right-hand side does not match the operation's return type.",
962 ),
963 d(
964 "bynk.provides.unknown_op",
965 "A test `provides` names an operation the capability does not declare.",
966 ),
967 d(
968 "bynk.query.join_key_mismatch",
969 "A `joinOn`/`leftJoin` left and right key function return different types.",
970 ),
971 dg(
972 "bynk.query.sum_needs_numeric",
973 "A `sum`/`average` key function does not return a numeric type (`Int`, `Float`, or `Duration`).",
974 &[],
975 ),
976 dg(
977 "bynk.queue.bad_params",
978 "An `on message` handler does not take exactly one `message` parameter.",
979 &["queue_handler"],
980 ),
981 dg(
982 "bynk.queue.duplicate_consumer",
983 "Two `on message` handlers consume the same queue.",
984 &["queue_handler"],
985 ),
986 dg(
987 "bynk.queue.invalid_name",
988 "A `from queue(\"…\")` binding has an empty queue name.",
989 &["queue_handler"],
990 ),
991 dg(
992 "bynk.queue.return_not_queue_result",
993 "An `on message` handler does not return `Effect[QueueResult]`.",
994 &["handler"],
995 ),
996 dg(
997 "bynk.record_spread.field_type_mismatch",
998 "A record-spread override has the wrong type for the field.",
999 &["record_spread"],
1000 ),
1001 dg(
1002 "bynk.record_spread.non_record_base",
1003 "The base of a record spread is not a record.",
1004 &["record_spread"],
1005 ),
1006 dg(
1007 "bynk.record_spread.type_mismatch",
1008 "A record spread's base is a different record type.",
1009 &["record_spread"],
1010 ),
1011 dg(
1012 "bynk.record_spread.unknown_field",
1013 "A record spread overrides a field the record does not have.",
1014 &["record_spread"],
1015 ),
1016 dg(
1017 "bynk.refine.literal_violates",
1018 "A literal does not satisfy the refined type's predicate.",
1019 &["refined_type"],
1020 ),
1021 dg(
1022 "bynk.requires.unpinned_dependency",
1023 "An adapter `binding … requires { … }` entry has an unpinned version range.",
1024 &["binding_decl"],
1025 ),
1026 d(
1027 "bynk.resolve.ambiguous_variant",
1028 "A variant name is ambiguous across several sum types.",
1029 ),
1030 dg(
1031 "bynk.resolve.arity_mismatch",
1032 "A function was called with the wrong number of arguments.",
1033 &["call"],
1034 ),
1035 d("bynk.resolve.duplicate_actor", "Two actors share a name."),
1036 dg(
1037 "bynk.resolve.duplicate_agent",
1038 "Two agents share a name.",
1039 &["agent_decl"],
1040 ),
1041 dg(
1042 "bynk.resolve.duplicate_capability",
1043 "Two capabilities share a name.",
1044 &["capability_decl"],
1045 ),
1046 dg(
1047 "bynk.resolve.duplicate_field",
1048 "A record declares a field twice.",
1049 &["record_type"],
1050 ),
1051 dg(
1052 "bynk.resolve.duplicate_field_init",
1053 "A record construction initialises a field twice.",
1054 &["record_construction"],
1055 ),
1056 dg(
1057 "bynk.resolve.duplicate_fn",
1058 "Two functions share a name.",
1059 &["fn_decl"],
1060 ),
1061 dg(
1062 "bynk.resolve.duplicate_method",
1063 "Two methods share a name.",
1064 &["fn_decl"],
1065 ),
1066 dg(
1067 "bynk.resolve.duplicate_param",
1068 "A parameter name is repeated.",
1069 &["param"],
1070 ),
1071 dg(
1072 "bynk.resolve.duplicate_provider",
1073 "A capability is provided more than once.",
1074 &["provider_decl"],
1075 ),
1076 dg(
1077 "bynk.resolve.duplicate_service",
1078 "Two services share a name.",
1079 &["service_decl"],
1080 ),
1081 dg(
1082 "bynk.resolve.duplicate_type",
1083 "Two types share a name.",
1084 &["type_decl"],
1085 ),
1086 dg(
1087 "bynk.resolve.duplicate_variant",
1088 "A sum type declares a variant twice.",
1089 &["sum_type"],
1090 ),
1091 d(
1092 "bynk.resolve.fn_without_call",
1093 "A function was referenced without being called.",
1094 ),
1095 dg(
1096 "bynk.resolve.let_shadows_fn",
1097 "A `let` binding shadows a function.",
1098 &["let_stmt"],
1099 ),
1100 dg(
1101 "bynk.resolve.let_shadows_type",
1102 "A `let` binding shadows a type.",
1103 &["let_stmt"],
1104 ),
1105 d(
1106 "bynk.resolve.method_unknown_type",
1107 "A method is defined on an unknown type.",
1108 ),
1109 dg(
1110 "bynk.resolve.missing_field",
1111 "A record construction omits a required field.",
1112 &["record_construction"],
1113 ),
1114 d(
1115 "bynk.resolve.name_conflict",
1116 "Two declarations share a name.",
1117 ),
1118 dg(
1119 "bynk.resolve.not_a_record_type",
1120 "Record syntax was used on a non-record type.",
1121 &["record_construction"],
1122 ),
1123 dg(
1124 "bynk.resolve.opaque_record_construction",
1125 "An opaque type was constructed with record syntax.",
1126 &["record_construction"],
1127 ),
1128 dg(
1129 "bynk.resolve.param_as_function",
1130 "A value (such as a parameter) was called as a function.",
1131 &["call"],
1132 ),
1133 dg(
1134 "bynk.resolve.recursive_record_field",
1135 "A record directly contains a field of its own type.",
1136 &["record_type"],
1137 ),
1138 dg(
1139 "bynk.resolve.self_outside_method",
1140 "`self` referenced outside a method or handler.",
1141 &["self_expr"],
1142 ),
1143 dg(
1144 "bynk.resolve.type_as_function",
1145 "A type name was called as if it were a function.",
1146 &["call"],
1147 ),
1148 d(
1149 "bynk.resolve.type_in_expr",
1150 "A type name was used where a value is expected.",
1151 ),
1152 dg(
1153 "bynk.resolve.unconsumed_context",
1154 "A context's service was called without a `consumes` declaration.",
1155 &["consumes_decl"],
1156 ),
1157 dg(
1158 "bynk.resolve.unknown_field",
1159 "Accessed a field the record does not have.",
1160 &["field_access"],
1161 ),
1162 dg(
1163 "bynk.resolve.unknown_function",
1164 "Called a function that does not exist.",
1165 &["call"],
1166 ),
1167 d(
1168 "bynk.resolve.unknown_name",
1169 "Referenced a name that is not in scope.",
1170 ),
1171 dg(
1172 "bynk.resolve.unknown_static_member",
1173 "Referenced an unknown static member (e.g. `T.x`).",
1174 &["field_access"],
1175 ),
1176 d(
1177 "bynk.resolve.unknown_type",
1178 "Referenced a type that does not exist.",
1179 ),
1180 dg(
1181 "bynk.send.in_pure_context",
1182 "A `~>` send was used in a pure (non-effectful) context.",
1183 &["effect_send_stmt"],
1184 ),
1185 dg(
1186 "bynk.send.non_effect",
1187 "A `~>` send was applied to a non-`Effect` value.",
1188 &["effect_send_stmt"],
1189 ),
1190 dg(
1191 "bynk.send.requires_unit",
1192 "A `~>` send targets an operation whose reply is not `Effect[()]`.",
1193 &["effect_send_stmt"],
1194 ),
1195 dg(
1196 "bynk.service.missing_from",
1197 "A `from`-less service has a handler other than `on call`.",
1198 &["service_decl"],
1199 ),
1200 dg(
1201 "bynk.service.mixed_protocols",
1202 "A service mixes handler forms that do not match its `from <protocol>`.",
1203 &["service_decl"],
1204 ),
1205 dg(
1206 "bynk.service.outside_context",
1207 "A `service` was declared outside a context.",
1208 &["service_decl"],
1209 ),
1210 dg(
1211 "bynk.service.return_not_effect",
1212 "A service handler's return type is not an `Effect`.",
1213 &["service_decl"],
1214 ),
1215 dg(
1216 "bynk.service.unknown_protocol",
1217 "A `from <protocol>` names an unknown protocol (e.g. a transport like Kafka).",
1218 &["service_decl"],
1219 ),
1220 d(
1221 "bynk.service.websocket_header",
1222 "The `from WebSocket` header is malformed — it binds frame types as `WebSocket(in: <type>, out: <type>)` (real-time track slice 3).",
1223 ),
1224 d(
1225 "bynk.service.websocket_multiple",
1226 "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).",
1227 ),
1228 d(
1229 "bynk.service.websocket_open_arity",
1230 "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).",
1231 ),
1232 d(
1233 "bynk.store.annotation_kind_mismatch",
1234 "A storage annotation is used on a kind it does not apply to (e.g. `@ttl` on a `Map`).",
1235 ),
1236 d(
1237 "bynk.store.annotation_unsupported",
1238 "A known storage annotation (`@ttl`/`@retain`/`@indexed`/`@bounded`) is used before the slice that supports it.",
1239 ),
1240 d(
1241 "bynk.store.cache_needs_clock",
1242 "A handler performs a `Cache` operation (TTL expiry reads the clock) without declaring `given Clock`.",
1243 ),
1244 d(
1245 "bynk.store.cache_ttl_required",
1246 "A `Cache` field is missing its required `@ttl(<duration>)` annotation (a keyed store with no expiry is a `Map`).",
1247 ),
1248 d(
1249 "bynk.store.kind_arity",
1250 "A storage kind was applied to the wrong number of type arguments (e.g. `Cell[A, B]`).",
1251 ),
1252 d(
1253 "bynk.store.kind_unsupported",
1254 "A known storage kind (`Queue`) is used before the slice that supports it.",
1255 ),
1256 d(
1257 "bynk.store.log_needs_clock",
1258 "A handler calls `Log.append` (which stamps the current time) without declaring `given Clock`.",
1259 ),
1260 d(
1261 "bynk.store.unknown_annotation",
1262 "A `store` field carries an annotation outside the closed `@indexed`/`@ttl`/`@retain`/`@bounded` set.",
1263 ),
1264 d(
1265 "bynk.store.unknown_kind",
1266 "A `store` field's type is not a known storage kind.",
1267 ),
1268 d(
1269 "bynk.store.unknown_op",
1270 "A storage-`Map`/`Set` operation is not a recognised entry/membership method.",
1271 ),
1272 dg(
1273 "bynk.suite.duplicate_case_name",
1274 "Two `case`s share a description.",
1275 &["case"],
1276 ),
1277 dg(
1278 "bynk.suite.unknown_target",
1279 "A `suite` targets a unit that does not exist.",
1280 &["suite_decl"],
1281 ),
1282 d(
1283 "bynk.target.browser_bundle_only",
1284 "The `browser` platform builds only the in-process `Bundle` topology; `--target workers` is not a browser build.",
1285 ),
1286 dg(
1287 "bynk.target.vendor_conflict",
1288 "One deployment unit's in-process closure uses platform-native capabilities from two mutually-exclusive platforms.",
1289 &["consumes_decl"],
1290 ),
1291 dg(
1292 "bynk.target.vendor_required",
1293 "A deployment unit uses a platform-native capability but the build selects another `--platform`.",
1294 &["consumes_decl"],
1295 ),
1296 d(
1297 "bynk.tier.property_has_tier",
1298 "A `property` carries an `as <tier>` clause; tiers are a `case`-only affordance.",
1299 ),
1300 d(
1301 "bynk.tier.system_needs_wire",
1302 "An `as system` test stands up fewer than two contexts; the system tier wires across contexts.",
1303 ),
1304 d(
1305 "bynk.transition.cross_agent_reference",
1306 "A transition predicate references another agent; step invariants are per-agent.",
1307 ),
1308 d(
1309 "bynk.transition.duplicate_name",
1310 "An agent declares two transitions with the same name.",
1311 ),
1312 d(
1313 "bynk.transition.impure_predicate",
1314 "A transition predicate uses an effectful or test-only construct; a step invariant must be pure.",
1315 ),
1316 d(
1317 "bynk.transition.no_step_reference",
1318 "A transition references neither `old` nor `new`; it constrains one state, so it is an `invariant`, not a step.",
1319 ),
1320 d(
1321 "bynk.transition.not_bool",
1322 "A transition predicate does not have type `Bool`.",
1323 ),
1324 d(
1325 "bynk.types.ambiguous_constructor",
1326 "`Ok`/`Err` is ambiguous between `Result` and `HttpResult`; qualify it.",
1327 ),
1328 dg(
1329 "bynk.types.argument_mismatch",
1330 "A function argument has the wrong type.",
1331 &["call"],
1332 ),
1333 d(
1334 "bynk.types.bytes_at_workers_boundary",
1335 "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).",
1336 ),
1337 dg(
1338 "bynk.types.call_arity",
1339 "A function value was applied with the wrong number of arguments.",
1340 &["call"],
1341 ),
1342 dg(
1343 "bynk.types.cannot_infer_option_type_param",
1344 "The value type of `None` could not be inferred.",
1345 &["none_expr"],
1346 ),
1347 d(
1348 "bynk.types.cannot_infer_result_type_params",
1349 "The type parameters of a `Result` could not be inferred.",
1350 ),
1351 d(
1352 "bynk.types.constructor_arity",
1353 "A variant constructor got the wrong number of arguments.",
1354 ),
1355 d(
1356 "bynk.types.constructor_base_mismatch",
1357 "A `.of` constructor was given an argument of the wrong base type.",
1358 ),
1359 dg(
1360 "bynk.types.duplicate_literal_arm",
1361 "A `match` has two arms for the same literal value.",
1362 &["match_arm"],
1363 ),
1364 dg(
1365 "bynk.types.duplicate_variant_arm",
1366 "A `match` has two arms for the same variant.",
1367 &["match_arm"],
1368 ),
1369 dg(
1370 "bynk.types.empty_refinement",
1371 "A refinement admits no values (contradictory predicates).",
1372 &["refinement"],
1373 ),
1374 dg(
1375 "bynk.types.err_value_mismatch",
1376 "An `Err` payload has the wrong type.",
1377 &["err_expr"],
1378 ),
1379 dg(
1380 "bynk.types.field_access_on_non_record",
1381 "Field access on a value that is not a record.",
1382 &["field_access"],
1383 ),
1384 dg(
1385 "bynk.types.field_refinement_not_base",
1386 "An inline field refinement requires a base or refined type.",
1387 &["record_field"],
1388 ),
1389 dg(
1390 "bynk.types.field_value_mismatch",
1391 "A record field was given a value of the wrong type.",
1392 &["record_construction"],
1393 ),
1394 dg(
1395 "bynk.types.function_at_boundary",
1396 "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.",
1397 &["function_type_ref"],
1398 ),
1399 d(
1400 "bynk.types.held_at_boundary",
1401 "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).",
1402 ),
1403 d(
1404 "bynk.types.held_not_comparable",
1405 "A held value (`Connection[F]`) is compared with `==`/`!=` — held values have identity, not value-equality (§2.9.3, real-time track slice 2).",
1406 ),
1407 dg(
1408 "bynk.types.if_branch_mismatch",
1409 "The branches of an `if` have different types.",
1410 &["if_expr"],
1411 ),
1412 dg(
1413 "bynk.types.if_non_bool_cond",
1414 "An `if` condition is not a `Bool`.",
1415 &["if_expr"],
1416 ),
1417 d(
1418 "bynk.types.interpolation_non_scalar",
1419 "An interpolation hole holds a value with no string form.",
1420 ),
1421 dg(
1422 "bynk.types.invalid_regex",
1423 "A `Matches` predicate contains an invalid regular expression.",
1424 &["refinement"],
1425 ),
1426 dg(
1427 "bynk.types.inverted_range",
1428 "An `InRange` predicate has its bounds inverted.",
1429 &["refinement"],
1430 ),
1431 dg(
1432 "bynk.types.is_base_mismatch",
1433 "An `is` refinement check is applied to a value of the wrong base type.",
1434 &["is_expr"],
1435 ),
1436 dg(
1437 "bynk.types.is_literal_pattern",
1438 "A literal was used on the right of `is`; `is` tests type/refinement, not value equality (use `==`).",
1439 &["is_expr"],
1440 ),
1441 dg(
1442 "bynk.types.is_non_sum",
1443 "`is` was applied to a value that is not a sum type.",
1444 &["is_expr"],
1445 ),
1446 dg(
1447 "bynk.types.is_unknown_variant",
1448 "`is` names a variant the type does not have.",
1449 &["is_expr"],
1450 ),
1451 dg(
1452 "bynk.types.json_uncodable",
1453 "A `Json.encode`/`Json.decode` target type cannot pass through the typed JSON codec (functions, effects, error builtins).",
1454 &["method_call"],
1455 ),
1456 dg(
1457 "bynk.types.key_not_orderable",
1458 "A `sortBy`/`min`/`max` key function does not return an orderable type (`Int`, `Float`, `String`, `Duration`, or `Instant`).",
1459 &[],
1460 ),
1461 dg(
1462 "bynk.types.lambda_mismatch",
1463 "A lambda's parameter count, parameter annotations, or body type do not match the expected function type.",
1464 &["lambda_expr"],
1465 ),
1466 dg(
1467 "bynk.types.let_annotation_mismatch",
1468 "A `let` value does not match its type annotation.",
1469 &["let_stmt"],
1470 ),
1471 dg(
1472 "bynk.types.list_element_mismatch",
1473 "A list-literal element has a different type from the list's element type.",
1474 &["list_literal"],
1475 ),
1476 dg(
1477 "bynk.types.match_arm_mismatch",
1478 "A `match` arm has a different type from the others.",
1479 &["match_arm"],
1480 ),
1481 dg(
1482 "bynk.types.match_non_sum_discriminant",
1483 "`match` was applied to a value that is not a sum type.",
1484 &["match_expr"],
1485 ),
1486 dg(
1487 "bynk.types.method_arity",
1488 "A method was called with the wrong number of arguments.",
1489 &["method_call"],
1490 ),
1491 dg(
1492 "bynk.types.method_not_found",
1493 "Called a method the type does not have.",
1494 &["method_call"],
1495 ),
1496 dg(
1497 "bynk.types.method_on_non_named_type",
1498 "A method was called on a built-in type that has no methods.",
1499 &["method_call"],
1500 ),
1501 dg(
1502 "bynk.types.mixed_pattern_bindings",
1503 "A pattern mixes named and positional bindings.",
1504 &["variant_pattern"],
1505 ),
1506 dg(
1507 "bynk.types.negative_length",
1508 "A length predicate was given a negative value.",
1509 &["refinement"],
1510 ),
1511 dg(
1512 "bynk.types.no_numeric_coercion",
1513 "`Int` and `Float` were mixed without an explicit conversion — in an operation or in refinement bounds.",
1514 &["binary_expr", "refinement"],
1515 ),
1516 dg(
1517 "bynk.types.non_exhaustive_match",
1518 "A `match` does not cover every variant.",
1519 &["match_expr"],
1520 ),
1521 dg(
1522 "bynk.types.ok_value_mismatch",
1523 "An `Ok` payload has the wrong type.",
1524 &["ok_expr"],
1525 ),
1526 dg(
1527 "bynk.types.opaque_raw_outside",
1528 "`.raw` on an opaque type was used outside its defining commons.",
1529 &["field_access"],
1530 ),
1531 dg(
1532 "bynk.types.opaque_record_construction",
1533 "An opaque type was constructed with record syntax.",
1534 &["record_construction"],
1535 ),
1536 dg(
1537 "bynk.types.opaque_unsafe_outside",
1538 "`.unsafe` on an opaque type was used outside its defining context.",
1539 &["field_access"],
1540 ),
1541 dg(
1542 "bynk.types.pattern_arity",
1543 "A pattern binds the wrong number of payload fields.",
1544 &["variant_pattern"],
1545 ),
1546 dg(
1547 "bynk.types.pattern_type_mismatch",
1548 "A pattern's type does not match the matched value.",
1549 &["variant_pattern"],
1550 ),
1551 dg(
1552 "bynk.types.predicate_base_mismatch",
1553 "A predicate does not apply to the type's base (e.g. a string predicate on an `Int`).",
1554 &["refinement"],
1555 ),
1556 d(
1557 "bynk.types.query_at_boundary",
1558 "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).",
1559 ),
1560 dg(
1561 "bynk.types.question_error_mismatch",
1562 "`?` propagates an error type incompatible with the function's.",
1563 &["question_expr"],
1564 ),
1565 dg(
1566 "bynk.types.question_on_non_result",
1567 "`?` was applied to a non-`Result` value.",
1568 &["question_expr"],
1569 ),
1570 dg(
1571 "bynk.types.question_outside_result",
1572 "`?` used in a function that does not return a `Result`.",
1573 &["question_expr"],
1574 ),
1575 d(
1576 "bynk.types.return_mismatch",
1577 "A returned value does not match the declared return type.",
1578 ),
1579 dg(
1580 "bynk.types.some_value_mismatch",
1581 "A `Some` payload has the wrong type.",
1582 &["some_expr"],
1583 ),
1584 d(
1585 "bynk.types.stream_at_boundary",
1586 "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).",
1587 ),
1588 d(
1589 "bynk.types.stream_not_comparable",
1590 "A `Stream` value is compared with `==`/`!=` — a stream is a live value-over-time source, not a comparable value (real-time track slice 0).",
1591 ),
1592 d(
1593 "bynk.types.type_mismatch",
1594 "Two types that were required to match did not.",
1595 ),
1596 dg(
1597 "bynk.types.uninferable_element_type",
1598 "An empty `[]` (or `List.empty()` / `Map.empty()`) has no expected type to infer its element type from.",
1599 &["list_literal"],
1600 ),
1601 dg(
1602 "bynk.types.unkeyable_distinct",
1603 "A `distinct`/`distinctBy` element or key is not value-keyable (`String`, `Int`, or a refined/opaque type over them).",
1604 &[],
1605 ),
1606 dg(
1607 "bynk.types.unkeyable_map_key",
1608 "A `Map` key type is not value-keyable (`String`, `Int`, or a refined/opaque type over them).",
1609 &["generic_type_ref"],
1610 ),
1611 dg(
1612 "bynk.types.unknown_field",
1613 "Referenced a field the record type does not declare.",
1614 &["field_access"],
1615 ),
1616 dg(
1617 "bynk.types.unknown_pattern_field",
1618 "A pattern names a field the variant does not have.",
1619 &["variant_pattern"],
1620 ),
1621 dg(
1622 "bynk.types.unknown_static_member",
1623 "Referenced an unknown static member on a type.",
1624 &["field_access"],
1625 ),
1626 dg(
1627 "bynk.types.unknown_variant_in_pattern",
1628 "A pattern names a variant the sum type does not have.",
1629 &["variant_pattern"],
1630 ),
1631 dg(
1632 "bynk.types.unreachable_arm",
1633 "A `match` arm is unreachable.",
1634 &["match_arm"],
1635 ),
1636 d(
1637 "bynk.types.variant_arity",
1638 "A variant constructor got the wrong number of payload values.",
1639 ),
1640 d(
1641 "bynk.types.variant_missing_payload",
1642 "A variant requiring a payload was used without one.",
1643 ),
1644 d(
1645 "bynk.types.variant_payload_mismatch",
1646 "A variant payload has the wrong type.",
1647 ),
1648 dg(
1649 "bynk.uses.name_conflict",
1650 "A `uses` name collides with another name.",
1651 &["uses_decl"],
1652 ),
1653 dg(
1654 "bynk.uses.self_reference",
1655 "A commons `uses` itself.",
1656 &["uses_decl"],
1657 ),
1658 dg(
1659 "bynk.uses.target_is_context",
1660 "`uses` targets a context instead of a commons.",
1661 &["uses_decl"],
1662 ),
1663 dg(
1664 "bynk.uses.unknown_commons",
1665 "`uses` names a commons that does not exist.",
1666 &["uses_decl"],
1667 ),
1668 dg(
1669 "bynk.val.agent_not_generable",
1670 "A `for all`/`Val` cannot generate an agent — fabricated agent states need not be reachable.",
1671 &["for_all"],
1672 ),
1673 dg(
1674 "bynk.val.arity",
1675 "`Val[T]` was given the wrong number of pin arguments.",
1676 &["val_expr"],
1677 ),
1678 dg(
1679 "bynk.val.literal_violates",
1680 "A pinned `Val[T]` value violates the type's refinement.",
1681 &["val_expr"],
1682 ),
1683 dg(
1684 "bynk.val.needs_pin",
1685 "A bare `Val[T]` cannot generate a value (e.g. a `Matches` string); pin one.",
1686 &["val_expr"],
1687 ),
1688 dg(
1689 "bynk.val.outside_test",
1690 "`Val[T]` was used outside a test case body.",
1691 &["val_expr"],
1692 ),
1693 dg(
1694 "bynk.val.pin_not_literal",
1695 "A `Val[T]` pin argument is not a compile-time literal.",
1696 &["val_expr"],
1697 ),
1698 dg(
1699 "bynk.val.pin_unsupported",
1700 "A pin was given for a type kind that does not support pinning.",
1701 &["val_expr"],
1702 ),
1703 dg(
1704 "bynk.val.unknown_type",
1705 "`Val[T]` names a type that does not resolve.",
1706 &["val_expr"],
1707 ),
1708 dg(
1709 "bynk.val.unsupported_kind",
1710 "`Val[T]` cannot fabricate a value for this kind of type.",
1711 &["val_expr"],
1712 ),
1713 d(
1714 "bynk.ws.message_frame_param",
1715 "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).",
1716 ),
1717 d(
1718 "bynk.ws.open_given_unsupported",
1719 "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).",
1720 ),
1721 d(
1722 "bynk.ws.open_transfer_shape",
1723 "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).",
1724 ),
1725 d(
1726 "bynk.ws.route_param_mismatch",
1727 "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).",
1728 ),
1729];
1730
1731const fn d(code: &'static str, summary: &'static str) -> DiagnosticInfo {
1733 DiagnosticInfo {
1734 code,
1735 summary,
1736 grammar_symbol: &[],
1737 }
1738}
1739
1740const fn dg(
1742 code: &'static str,
1743 summary: &'static str,
1744 grammar_symbol: &'static [&'static str],
1745) -> DiagnosticInfo {
1746 DiagnosticInfo {
1747 code,
1748 summary,
1749 grammar_symbol,
1750 }
1751}
1752
1753pub fn category(code: &str) -> &str {
1756 code.split('.').nth(1).unwrap_or("")
1757}
1758
1759fn category_title(cat: &str) -> &'static str {
1761 match cat {
1762 "agent" | "agents" => "Agents",
1763 "boundary" => "Boundaries",
1764 "capability" => "Capabilities",
1765 "consumes" => "Consumes",
1766 "context" => "Contexts",
1767 "contract" => "Contracts",
1768 "cron" => "Cron",
1769 "effect" => "Effects",
1770 "expect" => "Expectations",
1771 "exports" => "Exports",
1772 "given" => "Given capabilities",
1773 "http" => "HTTP",
1774 "lex" => "Lexer",
1775 "mock" => "Mocks (collaborators)",
1776 "observe" => "Observation",
1777 "parse" => "Parser",
1778 "project" => "Project",
1779 "property" => "Properties (generative tests)",
1780 "provider" => "Providers",
1781 "queue" => "Queue",
1782 "record_spread" => "Record spread",
1783 "refine" => "Refinement",
1784 "resolve" => "Resolution",
1785 "service" => "Services",
1786 "suite" => "Suites and cases",
1787 "transition" => "Transitions (step invariants)",
1788 "types" => "Type checking",
1789 "uses" => "Uses",
1790 "val" => "Value fabrication",
1791 _ => "Other",
1792 }
1793}
1794
1795pub fn render_markdown() -> String {
1799 use std::collections::BTreeMap;
1800
1801 let mut by_category: BTreeMap<&str, Vec<&DiagnosticInfo>> = BTreeMap::new();
1803 for info in REGISTRY {
1804 by_category
1805 .entry(category_title(category(info.code)))
1806 .or_default()
1807 .push(info);
1808 }
1809
1810 let mut out = String::new();
1811 out.push_str("# Diagnostic index\n\n");
1812 out.push_str(
1813 "<!-- GENERATED FILE — do not edit by hand.\n \
1814 Source: bynkc/src/diagnostics.rs (`render_markdown`).\n \
1815 Regenerate with: BYNK_BLESS=1 cargo test -p bynkc --test diagnostics_registry -->\n\n",
1816 );
1817 out.push_str(
1818 "Every diagnostic code the compiler can emit, with a one-line summary of \
1819 the cause, grouped by category. For step-by-step cause-and-fix guidance \
1820 on the most common ones, see the [troubleshooting guides](../troubleshooting/index.md).\n\n",
1821 );
1822 out.push_str(&format!(
1823 "There are **{}** codes in total.\n",
1824 REGISTRY.len()
1825 ));
1826
1827 for (title, infos) in &by_category {
1828 out.push_str(&format!("\n## {title}\n\n"));
1829 out.push_str("| Code | Summary | Construct |\n|---|---|---|\n");
1830 for info in infos {
1831 let construct = info
1836 .grammar_symbol
1837 .iter()
1838 .map(|sym| format!("[`{sym}`](grammar.md#rule-{sym})"))
1839 .collect::<Vec<_>>()
1840 .join(", ");
1841 out.push_str(&format!(
1842 "| `{}` | {} | {} |\n",
1843 info.code, info.summary, construct
1844 ));
1845 }
1846 }
1847
1848 out
1849}
1850
1851pub fn render_grammar_semantics_json() -> String {
1857 use std::collections::BTreeMap;
1858
1859 let mut by_symbol: BTreeMap<&str, Vec<&DiagnosticInfo>> = BTreeMap::new();
1862 for info in REGISTRY {
1863 for sym in info.grammar_symbol {
1864 by_symbol.entry(sym).or_default().push(info);
1865 }
1866 }
1867
1868 let mut map = serde_json::Map::new();
1869 map.insert(
1870 "_generated".to_string(),
1871 serde_json::Value::String(
1872 "Generated from the grammar_symbol field of bynkc/src/diagnostics.rs. \
1873 Do not edit by hand. Regenerate with: BYNK_BLESS=1 cargo test -p \
1874 bynkc --test diagnostics_registry"
1875 .to_string(),
1876 ),
1877 );
1878 for (sym, infos) in by_symbol {
1879 let arr: Vec<serde_json::Value> = infos
1880 .iter()
1881 .map(|info| serde_json::json!({ "code": info.code, "summary": info.summary }))
1882 .collect();
1883 map.insert(sym.to_string(), serde_json::Value::Array(arr));
1884 }
1885
1886 let mut s =
1887 serde_json::to_string_pretty(&serde_json::Value::Object(map)).expect("serialise semantics");
1888 s.push('\n');
1889 s
1890}