1use std::collections::{HashMap, HashSet};
39use std::sync::OnceLock;
40
41use serde::{Deserialize, Serialize};
42
43pub const MANIFEST_DATA: &str = include_str!("data/manifest.json");
45
46pub const PROBES_DATA: &str = include_str!("probes/probes.json");
48
49#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
51pub struct Reference {
52 pub name: String,
53 pub version: String,
54 #[serde(rename = "contentCommit")]
55 pub content_commit: String,
56 pub integrity: String,
57}
58
59#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
61pub struct Provenance {
62 pub generator: String,
63 pub license: String,
64 pub reviewed: bool,
65}
66
67#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
69#[serde(rename_all = "camelCase")]
70pub enum FunctionKind {
71 Action,
73 Value,
75 MemberAction,
77 MemberValue,
79}
80
81#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, Default)]
86#[serde(rename_all = "kebab-case")]
87pub enum CatalogLink {
88 #[default]
89 Canonical,
90 SpecialLowering,
91 LegacyAlias,
92 CatalogGap,
93}
94
95impl FunctionKind {
96 pub fn is_action(self) -> bool {
98 matches!(self, FunctionKind::Action | FunctionKind::MemberAction)
99 }
100
101 pub fn is_value(self) -> bool {
103 matches!(self, FunctionKind::Value | FunctionKind::MemberValue)
104 }
105
106 pub fn is_member(self) -> bool {
108 matches!(self, FunctionKind::MemberAction | FunctionKind::MemberValue)
109 }
110}
111
112#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
120#[serde(rename_all = "PascalCase")]
121pub enum ReceiverCategory {
122 Player,
123 Variable,
124 String,
125 Vector,
126 Any,
127}
128
129impl ReceiverCategory {
130 pub fn describe(self) -> &'static str {
132 match self {
133 ReceiverCategory::Player => "a player-valued expression",
134 ReceiverCategory::Variable => "an assignable variable",
135 ReceiverCategory::String => "a string literal",
136 ReceiverCategory::Vector => "a vector-valued expression",
137 ReceiverCategory::Any => "any expression",
138 }
139 }
140}
141
142#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
145#[serde(untagged)]
146pub enum ParamDefault {
147 Call { call: String },
148 Null { null: bool },
149 EnumMember(String),
150 Bool(bool),
151 Number(f64),
152}
153
154#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
156#[serde(rename_all = "camelCase")]
157pub struct Param {
158 pub name: String,
159 #[serde(default)]
161 pub domain: Option<String>,
162 #[serde(default)]
164 pub default: Option<ParamDefault>,
165 #[serde(default)]
168 pub optional: bool,
169 #[serde(default)]
173 pub keyword_only: bool,
174 #[serde(default)]
178 pub positional_only: bool,
179 #[serde(default)]
183 pub alternate_names: Vec<String>,
184 #[serde(default)]
188 pub variable: bool,
189}
190
191#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
193#[serde(rename_all = "camelCase")]
194pub struct Function {
195 pub id: String,
196 pub kind: FunctionKind,
197 #[serde(default)]
199 pub receiver: Option<ReceiverCategory>,
200 #[serde(default)]
201 pub params: Vec<Param>,
202 #[serde(default)]
204 pub unbounded: bool,
205 #[serde(default = "default_keyword_args")]
211 pub keyword_args: bool,
212 #[serde(default)]
215 #[serde(rename = "catalogId")]
216 pub catalog_id: Option<String>,
217 #[serde(default)]
219 pub catalog_link: CatalogLink,
220 #[serde(default)]
222 pub evidence: Vec<String>,
223}
224
225impl Function {
226 pub fn arity_bounds(&self) -> (usize, Option<usize>) {
230 if self.unbounded {
231 return (0, None);
232 }
233 let first_default = self
234 .params
235 .iter()
236 .position(|param| param.default.is_some() || param.optional);
237 let min = first_default.unwrap_or(self.params.len());
238 (min, Some(self.params.len()))
239 }
240}
241
242fn default_keyword_args() -> bool {
243 true
244}
245
246#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
248#[serde(rename_all = "camelCase")]
249pub struct Alias {
250 pub source: String,
251 pub target: String,
252 pub kind: AliasKind,
253 #[serde(default)]
254 pub evidence: Vec<String>,
255}
256
257#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
260#[serde(rename_all = "camelCase")]
261pub enum AliasKind {
262 FunctionAlias,
263 MemberAlias,
264}
265
266#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
268#[serde(rename_all = "camelCase")]
269pub struct Probe {
270 pub id: String,
271 pub source: String,
272 pub sha256: String,
273 pub expect: String,
274 #[serde(default)]
275 pub output_sha256: Option<String>,
276 #[serde(default)]
277 pub diagnostic_contains: Option<String>,
278}
279
280#[derive(Debug, Clone, PartialEq, Eq)]
282pub struct ManifestError(pub String);
283
284impl std::fmt::Display for ManifestError {
285 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
286 f.write_str(&self.0)
287 }
288}
289
290impl std::error::Error for ManifestError {}
291
292#[derive(Debug, Clone)]
294pub struct Manifest {
295 pub schema_version: u32,
296 pub reference: Reference,
297 pub functions: Vec<Function>,
298 pub aliases: Vec<Alias>,
299 pub provenance: Provenance,
300 pub probes: Vec<Probe>,
302 by_function: HashMap<String, usize>,
303 by_member: HashMap<String, usize>,
304 alias_by_source: HashMap<String, usize>,
305 domain_identities: HashSet<String>,
310}
311
312#[derive(Serialize, Deserialize)]
313#[serde(rename_all = "camelCase")]
314struct ManifestFile {
315 schema_version: u32,
316 reference: Reference,
317 #[serde(default)]
318 functions: Vec<Function>,
319 #[serde(default)]
320 aliases: Vec<Alias>,
321 provenance: Provenance,
322}
323
324#[derive(Serialize, Deserialize)]
325#[serde(rename_all = "camelCase")]
326struct ProbesFile {
327 schema_version: u32,
328 #[serde(default)]
329 probes: Vec<Probe>,
330}
331
332impl Manifest {
333 pub fn load(manifest_json: &str, probes_json: &str) -> Result<Manifest, ManifestError> {
335 let file: ManifestFile = serde_json::from_str(manifest_json)
336 .map_err(|error| ManifestError(format!("manifest data: {error}")))?;
337 if file.schema_version != 1 {
338 return Err(ManifestError(format!(
339 "unsupported manifest schemaVersion {}",
340 file.schema_version
341 )));
342 }
343 let probes_file: ProbesFile = serde_json::from_str(probes_json)
344 .map_err(|error| ManifestError(format!("probes data: {error}")))?;
345 if probes_file.schema_version != 1 {
346 return Err(ManifestError(format!(
347 "unsupported probes schemaVersion {}",
348 probes_file.schema_version
349 )));
350 }
351 let mut manifest = Manifest {
352 schema_version: file.schema_version,
353 reference: file.reference.clone(),
354 functions: Vec::new(),
355 aliases: Vec::new(),
356 provenance: file.provenance.clone(),
357 probes: probes_file.probes,
358 by_function: HashMap::new(),
359 by_member: HashMap::new(),
360 alias_by_source: HashMap::new(),
361 domain_identities: HashSet::new(),
362 };
363 manifest.validate(file)?;
364 Ok(manifest)
365 }
366
367 fn validate(&mut self, file: ManifestFile) -> Result<(), ManifestError> {
368 let mut probes: HashMap<&str, &Probe> = HashMap::new();
371 for probe in &self.probes {
372 if probes.insert(&probe.id, probe).is_some() {
373 return Err(ManifestError(format!("duplicate probe id '{}'", probe.id)));
374 }
375 }
376
377 for function in &file.functions {
381 if self.by_function.contains_key(&function.id) {
382 return Err(ManifestError(format!(
383 "duplicate function id '{}'",
384 function.id
385 )));
386 }
387 match function.kind {
388 FunctionKind::MemberAction | FunctionKind::MemberValue => {
389 if function.receiver.is_none() {
390 return Err(ManifestError(format!(
391 "member function '{}' declares no receiver category",
392 function.id
393 )));
394 }
395 }
396 FunctionKind::Action | FunctionKind::Value => {
397 if function.receiver.is_some() {
398 return Err(ManifestError(format!(
399 "non-member function '{}' declares a receiver category",
400 function.id
401 )));
402 }
403 }
404 }
405 for param in function.params.iter() {
406 if let Some(domain) = ¶m.domain {
407 let is_contextual = crate::lower::policy::is_contextual_domain(domain);
412 if !is_contextual {
413 self.domain_identities.insert(domain.clone());
414 }
415 } else if matches!(param.default, Some(ParamDefault::EnumMember(_))) {
416 return Err(ManifestError(format!(
417 "function '{}' parameter '{}' has an enum-member default but no \
418 declared domain",
419 function.id, param.name
420 )));
421 }
422 if param.keyword_only && param.positional_only {
423 return Err(ManifestError(format!(
424 "function '{}' parameter '{}' cannot be both keyword-only and \
425 positional-only",
426 function.id, param.name
427 )));
428 }
429 for alternate in ¶m.alternate_names {
430 if alternate == ¶m.name {
431 return Err(ManifestError(format!(
432 "function '{}' parameter '{}' repeats its name as an \
433 alternate keyword spelling",
434 function.id, param.name
435 )));
436 }
437 if function.params.iter().any(|other| {
438 !std::ptr::eq(other, param)
439 && (&other.name == alternate
440 || other.alternate_names.contains(alternate))
441 }) {
442 return Err(ManifestError(format!(
443 "function '{}' alternate keyword spelling '{alternate}' \
444 collides with another parameter",
445 function.id
446 )));
447 }
448 }
449 }
450 match (&function.catalog_id, function.catalog_link) {
451 (Some(_), CatalogLink::Canonical)
452 | (None, CatalogLink::SpecialLowering)
453 | (None, CatalogLink::LegacyAlias)
454 | (None, CatalogLink::CatalogGap) => {}
455 (Some(id), link) => {
456 return Err(ManifestError(format!(
457 "function '{}' has catalogId '{id}' but catalogLink is {:?}",
458 function.id, link
459 )));
460 }
461 (None, CatalogLink::Canonical) => {
462 return Err(ManifestError(format!(
463 "function '{}' has no catalogId or explicit catalogLink reason",
464 function.id
465 )));
466 }
467 }
468 crate::lower::policy::validate(function).map_err(ManifestError)?;
469 if let Some(contextual) = crate::lower::policy::contextual_domain(&function.id) {
470 for option in contextual.options {
471 self.domain_identities.insert(option.domain.to_string());
472 }
473 }
474 self.check_evidence(&function.id, &function.evidence, &probes)?;
475 if function.kind.is_member() {
476 self.by_member
477 .insert(function.id.clone(), self.functions.len());
478 } else {
479 self.by_function
480 .insert(function.id.clone(), self.functions.len());
481 }
482 self.functions.push(function.clone());
483 }
484
485 for alias in &file.aliases {
488 if self.alias_by_source.contains_key(&alias.source) {
489 return Err(ManifestError(format!(
490 "duplicate alias source '{}'",
491 alias.source
492 )));
493 }
494 if self.by_function.contains_key(&alias.source)
495 || self.by_member.contains_key(&alias.source)
496 {
497 return Err(ManifestError(format!(
498 "alias source '{}' collides with a declared function",
499 alias.source
500 )));
501 }
502 match alias.kind {
503 AliasKind::FunctionAlias => {
504 if self.function(&alias.target).is_none() {
505 return Err(ManifestError(format!(
506 "alias '{}' targets '{}' which is not a generic function",
507 alias.source, alias.target
508 )));
509 }
510 }
511 AliasKind::MemberAlias => {
512 if self.member(&alias.target).is_none() {
513 return Err(ManifestError(format!(
514 "alias '{}' targets '{}' which is not a member function",
515 alias.source, alias.target
516 )));
517 }
518 }
519 }
520 self.check_evidence(&alias.source, &alias.evidence, &probes)?;
521 self.alias_by_source
522 .insert(alias.source.clone(), self.aliases.len());
523 self.aliases.push(alias.clone());
524 }
525
526 Ok(())
527 }
528
529 fn check_evidence(
530 &self,
531 owner: &str,
532 evidence: &[String],
533 probes: &HashMap<&str, &Probe>,
534 ) -> Result<(), ManifestError> {
535 if evidence.is_empty() {
536 return Err(ManifestError(format!(
537 "entry '{owner}' records no oracle probe evidence"
538 )));
539 }
540 for probe_id in evidence {
541 let probe = probes.get(probe_id.as_str()).ok_or_else(|| {
542 ManifestError(format!(
543 "entry '{owner}' references undeclared probe '{probe_id}'"
544 ))
545 })?;
546 if probe.expect != "success" {
547 return Err(ManifestError(format!(
548 "entry '{owner}' references probe '{probe_id}' which does not record \
549 oracle acceptance"
550 )));
551 }
552 }
553 Ok(())
554 }
555
556 pub fn builtin() -> Result<&'static Manifest, ManifestError> {
558 static MANIFEST: OnceLock<Result<Manifest, ManifestError>> = OnceLock::new();
559 MANIFEST
560 .get_or_init(|| Manifest::load(MANIFEST_DATA, PROBES_DATA))
561 .as_ref()
562 .map_err(Clone::clone)
563 }
564
565 pub fn resolve_function(&self, name: &str) -> Option<&Function> {
567 self.function(name).or_else(|| {
568 let alias = self.alias_by_source.get(name)?;
569 let alias = &self.aliases[*alias];
570 (alias.kind == AliasKind::FunctionAlias)
571 .then(|| self.function(&alias.target))
572 .flatten()
573 })
574 }
575
576 pub fn resolve_member(&self, name: &str) -> Option<&Function> {
578 self.member(name).or_else(|| {
579 let alias = self.alias_by_source.get(name)?;
580 let alias = &self.aliases[*alias];
581 (alias.kind == AliasKind::MemberAlias)
582 .then(|| self.member(&alias.target))
583 .flatten()
584 })
585 }
586
587 pub fn function(&self, id: &str) -> Option<&Function> {
589 self.by_function.get(id).map(|i| &self.functions[*i])
590 }
591
592 pub fn member(&self, id: &str) -> Option<&Function> {
594 self.by_member.get(id).map(|i| &self.functions[*i])
595 }
596
597 pub fn domain_identity(&self, name: &str) -> bool {
603 self.domain_identities.contains(name)
604 }
605}
606
607pub fn canonicalize(manifest_json: &str, probes_json: &str) -> Result<String, ManifestError> {
612 Manifest::load(manifest_json, probes_json)?;
613 let value: serde_json::Value = serde_json::from_str(manifest_json)
614 .map_err(|error| ManifestError(format!("manifest data: {error}")))?;
615 serde_json::to_string_pretty(&value)
616 .map(|mut out| {
617 out.push('\n');
618 out
619 })
620 .map_err(|error| ManifestError(format!("cannot serialize manifest: {error}")))
621}
622
623#[cfg(test)]
624mod tests {
625 use super::*;
626
627 #[test]
628 fn builtin_manifest_loads_and_validates() {
629 let manifest = Manifest::builtin().expect("embedded manifest must validate");
630 assert_eq!(manifest.schema_version, 1);
631 assert_eq!(manifest.reference.name, "overpy");
632 assert_eq!(manifest.reference.version, "9.7.10");
633 assert_eq!(
634 manifest.reference.content_commit,
635 "889d9749d1def17f146548cbddb94ea1ab015847"
636 );
637 assert!(!manifest.functions.is_empty());
638 assert!(!manifest.aliases.is_empty());
639 for domain in ["Invis", "ChaseTimeReeval", "Team", "LosCheck", "Color"] {
644 assert!(manifest.domain_identity(domain), "{domain}");
645 }
646 assert_eq!(
647 manifest
648 .function("chase")
649 .expect("chase entry")
650 .catalog_link,
651 CatalogLink::SpecialLowering
652 );
653 assert_eq!(
654 manifest
655 .member("getHero")
656 .expect("getHero entry")
657 .catalog_link,
658 CatalogLink::Canonical
659 );
660 assert!(
661 !manifest.domain_identity("ChaseReeval"),
662 "contextual domains are not standalone identities"
663 );
664 for function in &manifest.functions {
665 assert!(!function.evidence.is_empty(), "{}", function.id);
666 if function.kind.is_member() {
667 assert!(function.receiver.is_some(), "{}", function.id);
668 }
669 }
670 }
671
672 #[test]
673 fn manifest_data_is_canonical() {
674 let canonical = canonicalize(MANIFEST_DATA, PROBES_DATA).expect("canonicalizes");
677 assert_eq!(canonical, MANIFEST_DATA, "manifest.json must be canonical");
678 assert_eq!(
680 canonicalize(&canonical, PROBES_DATA).expect("re-canonicalizes"),
681 canonical
682 );
683 }
684
685 #[test]
686 fn manifest_omits_contextual_lowering_policy() {
687 assert!(!MANIFEST_DATA.contains("\"contextualDomain\""));
688 assert!(!MANIFEST_DATA.contains("\"context\": \"forIterable\""));
689 }
690
691 #[test]
692 fn validation_rejects_duplicates_and_missing_evidence() {
693 fn mutate(mutate: impl FnOnce(&mut ManifestFile)) -> Result<Manifest, ManifestError> {
694 let mut file: ManifestFile = serde_json::from_str(MANIFEST_DATA).unwrap();
695 mutate(&mut file);
696 Manifest::load(&serde_json::to_string(&file).unwrap(), PROBES_DATA)
697 }
698 let error = mutate(|file| file.functions.push(file.functions[0].clone()))
700 .expect_err("duplicate function id must fail");
701 assert!(error.0.contains("duplicate function id"));
702 let error = mutate(|file| file.functions[0].catalog_link = CatalogLink::CatalogGap)
704 .expect_err("canonical catalog id must not carry a gap reason");
705 assert!(error.0.contains("catalogLink"));
706 let error = mutate(|file| file.functions[0].evidence.clear())
708 .expect_err("missing evidence must fail");
709 assert!(error.0.contains("no oracle probe evidence"));
710 let error = mutate(|file| {
713 file.functions[0].params.push(Param {
714 name: "bad".to_string(),
715 domain: None,
716 default: Some(ParamDefault::EnumMember("X".to_string())),
717 optional: false,
718 keyword_only: false,
719 positional_only: false,
720 alternate_names: Vec::new(),
721 variable: false,
722 })
723 })
724 .expect_err("enum default without a domain must fail");
725 assert!(error.0.contains("no declared domain"));
726 }
727
728 #[test]
729 fn arity_bounds_follow_defaults_and_unbounded() {
730 let manifest = Manifest::builtin().expect("builtin");
731 let chase = manifest.function("chaseOverTime").expect("entry");
732 assert_eq!(chase.arity_bounds(), (3, Some(4)));
733 let radius = manifest.function("getPlayersInRadius").expect("entry");
734 assert_eq!(radius.arity_bounds(), (2, Some(4)));
735 let status = manifest.member("setStatusEffect").expect("entry");
736 assert_eq!(status.arity_bounds(), (3, Some(3)));
737 let format = manifest.member("format").expect("entry");
738 assert_eq!(format.arity_bounds(), (0, None));
739 let range = manifest.function("range").expect("entry");
740 assert_eq!(range.arity_bounds(), (1, Some(3)));
741 assert_eq!(
742 crate::lower::policy::function_context(&range.id),
743 Some(crate::lower::policy::FunctionContext::ForIterable)
744 );
745 }
746
747 #[test]
748 fn aliases_resolve_to_declared_targets() {
749 let manifest = Manifest::builtin().expect("builtin");
750 let alias = manifest
751 .resolve_function("stopChasingVariable")
752 .expect("alias");
753 assert_eq!(alias.id, "stopChasingVariable");
754 assert!(alias.kind.is_action());
755 let member = manifest.resolve_member("getCurrentHero").expect("alias");
756 assert_eq!(member.id, "getHero");
757 assert!(member.kind.is_value());
758 assert!(manifest.resolve_function("frobnicate").is_none());
760 assert!(manifest.resolve_member("frobnicate").is_none());
761 }
762}