3 use relative_path::RelativePathBuf;
4 use ra_db::{CrateId, SourceRootId, Edition};
5 use ra_syntax::{ast::self, TreeArc, SyntaxNode};
8 Name, ScopesWithSyntaxMapping, Ty, HirFileId,
9 HirDatabase, PersistentHirDatabase,
11 nameres::{ModuleScope, Namespace, lower::ImportId},
12 expr::{Body, BodySyntaxMapping},
14 adt::{EnumVariantId, StructFieldId, VariantDef},
15 generics::GenericParams,
16 docs::{Documentation, Docs, docs_from_ast},
17 module_tree::ModuleId,
18 ids::{FunctionId, StructId, EnumId, AstItemDef, ConstId, StaticId, TraitId, TypeId},
19 impl_block::ImplBlock,
23 /// hir::Crate describes a single crate. It's the main interface with which
24 /// a crate's dependencies interact. Mostly, it should be just a proxy for the
26 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
28 pub(crate) crate_id: CrateId,
32 pub struct CrateDependency {
38 pub fn crate_id(&self) -> CrateId {
42 pub fn dependencies(&self, db: &impl PersistentHirDatabase) -> Vec<CrateDependency> {
43 self.dependencies_impl(db)
46 pub fn root_module(&self, db: &impl PersistentHirDatabase) -> Option<Module> {
47 self.root_module_impl(db)
50 pub fn edition(&self, db: &impl PersistentHirDatabase) -> Edition {
51 let crate_graph = db.crate_graph();
52 crate_graph.edition(self.crate_id)
55 // TODO: should this be in source_binder?
56 pub fn source_root_crates(
57 db: &impl PersistentHirDatabase,
58 source_root: SourceRootId,
60 let crate_ids = db.source_root_crates(source_root);
61 crate_ids.iter().map(|&crate_id| Crate { crate_id }).collect()
70 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
72 pub(crate) krate: Crate,
73 pub(crate) module_id: ModuleId,
76 /// The defs which can be visible in the module.
77 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
83 // Can't be directly declared, but can be imported.
84 EnumVariant(EnumVariant),
102 pub enum ModuleSource {
103 SourceFile(TreeArc<ast::SourceFile>),
104 Module(TreeArc<ast::Module>),
107 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
109 UnresolvedModule { candidate: RelativePathBuf },
110 NotDirOwner { move_to: RelativePathBuf, candidate: RelativePathBuf },
114 /// Name of this module.
115 pub fn name(&self, db: &impl HirDatabase) -> Option<Name> {
119 /// Returns a node which defines this module. That is, a file or a `mod foo {}` with items.
120 pub fn definition_source(&self, db: &impl PersistentHirDatabase) -> (HirFileId, ModuleSource) {
121 self.definition_source_impl(db)
124 /// Returns a node which declares this module, either a `mod foo;` or a `mod foo {}`.
125 /// `None` for the crate root.
126 pub fn declaration_source(
128 db: &impl HirDatabase,
129 ) -> Option<(HirFileId, TreeArc<ast::Module>)> {
130 self.declaration_source_impl(db)
133 /// Returns the syntax of the last path segment corresponding to this import
134 pub fn import_source(
136 db: &impl HirDatabase,
138 ) -> TreeArc<ast::PathSegment> {
139 self.import_source_impl(db, import)
142 /// Returns the crate this module is part of.
143 pub fn krate(&self, _db: &impl PersistentHirDatabase) -> Option<Crate> {
147 /// Topmost parent of this module. Every module has a `crate_root`, but some
148 /// might be missing `krate`. This can happen if a module's file is not included
149 /// in the module tree of any target in `Cargo.toml`.
150 pub fn crate_root(&self, db: &impl PersistentHirDatabase) -> Module {
151 self.crate_root_impl(db)
154 /// Finds a child module with the specified name.
155 pub fn child(&self, db: &impl HirDatabase, name: &Name) -> Option<Module> {
156 self.child_impl(db, name)
159 /// Iterates over all child modules.
160 pub fn children(&self, db: &impl PersistentHirDatabase) -> impl Iterator<Item = Module> {
161 self.children_impl(db)
164 /// Finds a parent module.
165 pub fn parent(&self, db: &impl PersistentHirDatabase) -> Option<Module> {
169 pub fn path_to_root(&self, db: &impl HirDatabase) -> Vec<Module> {
170 let mut res = vec![self.clone()];
171 let mut curr = self.clone();
172 while let Some(next) = curr.parent(db) {
173 res.push(next.clone());
179 /// Returns a `ModuleScope`: a set of items, visible in this module.
180 pub fn scope(&self, db: &impl HirDatabase) -> ModuleScope {
181 db.item_map(self.krate)[self.module_id].clone()
184 pub fn problems(&self, db: &impl HirDatabase) -> Vec<(TreeArc<SyntaxNode>, Problem)> {
185 self.problems_impl(db)
188 pub fn resolver(&self, db: &impl HirDatabase) -> Resolver {
189 let item_map = db.item_map(self.krate);
190 Resolver::default().push_module_scope(item_map, *self)
193 pub fn declarations(self, db: &impl HirDatabase) -> Vec<ModuleDef> {
194 let (lowered_module, _) = db.lower_module(self);
200 per_ns.take_types().into_iter().chain(per_ns.take_values().into_iter())
205 pub fn impl_blocks(self, db: &impl HirDatabase) -> Vec<ImplBlock> {
206 let module_impl_blocks = db.impls_in_module(self);
210 .map(|(impl_id, _)| ImplBlock::from_id(self, impl_id))
215 impl Docs for Module {
216 fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
217 self.declaration_source(db).and_then(|it| docs_from_ast(&*it.1))
221 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
222 pub struct StructField {
223 pub(crate) parent: VariantDef,
224 pub(crate) id: StructFieldId,
228 pub enum FieldSource {
229 Named(TreeArc<ast::NamedFieldDef>),
230 Pos(TreeArc<ast::PosFieldDef>),
234 pub fn name(&self, db: &impl HirDatabase) -> Name {
235 self.parent.variant_data(db).fields().unwrap()[self.id].name.clone()
238 pub fn source(&self, db: &impl PersistentHirDatabase) -> (HirFileId, FieldSource) {
242 pub fn ty(&self, db: &impl HirDatabase) -> Ty {
243 db.type_for_field(*self)
246 pub fn parent_def(&self, _db: &impl HirDatabase) -> VariantDef {
251 impl Docs for StructField {
252 fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
253 match self.source(db).1 {
254 FieldSource::Named(named) => docs_from_ast(&*named),
255 FieldSource::Pos(..) => return None,
260 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
262 pub(crate) id: StructId,
266 pub fn source(&self, db: &impl PersistentHirDatabase) -> (HirFileId, TreeArc<ast::StructDef>) {
270 pub fn module(&self, db: &impl HirDatabase) -> Module {
274 pub fn name(&self, db: &impl HirDatabase) -> Option<Name> {
275 db.struct_data(*self).name.clone()
278 pub fn fields(&self, db: &impl HirDatabase) -> Vec<StructField> {
279 db.struct_data(*self)
283 .flat_map(|it| it.iter())
284 .map(|(id, _)| StructField { parent: (*self).into(), id })
288 pub fn field(&self, db: &impl HirDatabase, name: &Name) -> Option<StructField> {
289 db.struct_data(*self)
293 .flat_map(|it| it.iter())
294 .find(|(_id, data)| data.name == *name)
295 .map(|(id, _)| StructField { parent: (*self).into(), id })
298 pub fn generic_params(&self, db: &impl PersistentHirDatabase) -> Arc<GenericParams> {
299 db.generic_params((*self).into())
302 pub fn ty(&self, db: &impl HirDatabase) -> Ty {
303 db.type_for_def((*self).into(), Namespace::Types)
306 pub fn constructor_ty(&self, db: &impl HirDatabase) -> Ty {
307 db.type_for_def((*self).into(), Namespace::Values)
310 // TODO move to a more general type
311 /// Builds a resolver for type references inside this struct.
312 pub fn resolver(&self, db: &impl HirDatabase) -> Resolver {
313 // take the outer scope...
314 let r = self.module(db).resolver(db);
315 // ...and add generic params, if present
316 let p = self.generic_params(db);
317 let r = if !p.params.is_empty() { r.push_generic_params_scope(p) } else { r };
322 impl Docs for Struct {
323 fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
324 docs_from_ast(&*self.source(db).1)
328 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
330 pub(crate) id: EnumId,
334 pub fn source(&self, db: &impl PersistentHirDatabase) -> (HirFileId, TreeArc<ast::EnumDef>) {
338 pub fn module(&self, db: &impl HirDatabase) -> Module {
342 pub fn name(&self, db: &impl HirDatabase) -> Option<Name> {
343 db.enum_data(*self).name.clone()
346 pub fn variants(&self, db: &impl PersistentHirDatabase) -> Vec<EnumVariant> {
350 .map(|(id, _)| EnumVariant { parent: *self, id })
354 pub fn variant(&self, db: &impl PersistentHirDatabase, name: &Name) -> Option<EnumVariant> {
358 .find(|(_id, data)| data.name.as_ref() == Some(name))
359 .map(|(id, _)| EnumVariant { parent: *self, id })
362 pub fn generic_params(&self, db: &impl PersistentHirDatabase) -> Arc<GenericParams> {
363 db.generic_params((*self).into())
366 pub fn ty(&self, db: &impl HirDatabase) -> Ty {
367 db.type_for_def((*self).into(), Namespace::Types)
370 // TODO: move to a more general type
371 /// Builds a resolver for type references inside this struct.
372 pub fn resolver(&self, db: &impl HirDatabase) -> Resolver {
373 // take the outer scope...
374 let r = self.module(db).resolver(db);
375 // ...and add generic params, if present
376 let p = self.generic_params(db);
377 let r = if !p.params.is_empty() { r.push_generic_params_scope(p) } else { r };
383 fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
384 docs_from_ast(&*self.source(db).1)
388 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
389 pub struct EnumVariant {
390 pub(crate) parent: Enum,
391 pub(crate) id: EnumVariantId,
397 db: &impl PersistentHirDatabase,
398 ) -> (HirFileId, TreeArc<ast::EnumVariant>) {
401 pub fn module(&self, db: &impl HirDatabase) -> Module {
402 self.parent.module(db)
404 pub fn parent_enum(&self, _db: &impl PersistentHirDatabase) -> Enum {
408 pub fn name(&self, db: &impl PersistentHirDatabase) -> Option<Name> {
409 db.enum_data(self.parent).variants[self.id].name.clone()
412 pub fn fields(&self, db: &impl HirDatabase) -> Vec<StructField> {
413 self.variant_data(db)
416 .flat_map(|it| it.iter())
417 .map(|(id, _)| StructField { parent: (*self).into(), id })
421 pub fn field(&self, db: &impl HirDatabase, name: &Name) -> Option<StructField> {
422 self.variant_data(db)
425 .flat_map(|it| it.iter())
426 .find(|(_id, data)| data.name == *name)
427 .map(|(id, _)| StructField { parent: (*self).into(), id })
431 impl Docs for EnumVariant {
432 fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
433 docs_from_ast(&*self.source(db).1)
437 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
438 pub struct Function {
439 pub(crate) id: FunctionId,
442 /// The declared signature of a function.
443 #[derive(Debug, Clone, PartialEq, Eq)]
444 pub struct FnSignature {
445 pub(crate) name: Name,
446 pub(crate) params: Vec<TypeRef>,
447 pub(crate) ret_type: TypeRef,
448 /// True if the first param is `self`. This is relevant to decide whether this
449 /// can be called as a method.
450 pub(crate) has_self_param: bool,
454 pub fn name(&self) -> &Name {
458 pub fn params(&self) -> &[TypeRef] {
462 pub fn ret_type(&self) -> &TypeRef {
466 /// True if the first arg is `self`. This is relevant to decide whether this
467 /// can be called as a method.
468 pub fn has_self_param(&self) -> bool {
474 pub fn source(&self, db: &impl PersistentHirDatabase) -> (HirFileId, TreeArc<ast::FnDef>) {
478 pub fn module(&self, db: &impl PersistentHirDatabase) -> Module {
482 pub fn name(&self, db: &impl HirDatabase) -> Name {
483 self.signature(db).name.clone()
486 pub fn body_syntax_mapping(&self, db: &impl HirDatabase) -> Arc<BodySyntaxMapping> {
487 db.body_syntax_mapping(*self)
490 pub fn body(&self, db: &impl HirDatabase) -> Arc<Body> {
494 pub fn ty(&self, db: &impl HirDatabase) -> Ty {
495 db.type_for_def((*self).into(), Namespace::Values)
498 pub fn scopes(&self, db: &impl HirDatabase) -> ScopesWithSyntaxMapping {
499 let scopes = db.expr_scopes(*self);
500 let syntax_mapping = db.body_syntax_mapping(*self);
501 ScopesWithSyntaxMapping { scopes, syntax_mapping }
504 pub fn signature(&self, db: &impl HirDatabase) -> Arc<FnSignature> {
505 db.fn_signature(*self)
508 pub fn infer(&self, db: &impl HirDatabase) -> Arc<InferenceResult> {
512 pub fn generic_params(&self, db: &impl PersistentHirDatabase) -> Arc<GenericParams> {
513 db.generic_params((*self).into())
516 /// The containing impl block, if this is a method.
517 pub fn impl_block(&self, db: &impl PersistentHirDatabase) -> Option<ImplBlock> {
518 let module_impls = db.impls_in_module(self.module(db));
519 ImplBlock::containing(module_impls, (*self).into())
522 // TODO: move to a more general type for 'body-having' items
523 /// Builds a resolver for code inside this item.
524 pub fn resolver(&self, db: &impl HirDatabase) -> Resolver {
525 // take the outer scope...
528 .map(|ib| ib.resolver(db))
529 .unwrap_or_else(|| self.module(db).resolver(db));
530 // ...and add generic params, if present
531 let p = self.generic_params(db);
532 let r = if !p.params.is_empty() { r.push_generic_params_scope(p) } else { r };
537 impl Docs for Function {
538 fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
539 docs_from_ast(&*self.source(db).1)
543 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
545 pub(crate) id: ConstId,
549 pub fn source(&self, db: &impl PersistentHirDatabase) -> (HirFileId, TreeArc<ast::ConstDef>) {
553 pub fn module(&self, db: &impl PersistentHirDatabase) -> Module {
557 /// The containing impl block, if this is a method.
558 pub fn impl_block(&self, db: &impl PersistentHirDatabase) -> Option<ImplBlock> {
559 let module_impls = db.impls_in_module(self.module(db));
560 ImplBlock::containing(module_impls, (*self).into())
564 impl Docs for Const {
565 fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
566 docs_from_ast(&*self.source(db).1)
570 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
572 pub(crate) id: StaticId,
576 pub fn source(&self, db: &impl PersistentHirDatabase) -> (HirFileId, TreeArc<ast::StaticDef>) {
580 pub fn module(&self, db: &impl PersistentHirDatabase) -> Module {
585 impl Docs for Static {
586 fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
587 docs_from_ast(&*self.source(db).1)
591 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
593 pub(crate) id: TraitId,
597 pub fn source(&self, db: &impl PersistentHirDatabase) -> (HirFileId, TreeArc<ast::TraitDef>) {
601 pub fn module(&self, db: &impl PersistentHirDatabase) -> Module {
605 pub fn generic_params(&self, db: &impl PersistentHirDatabase) -> Arc<GenericParams> {
606 db.generic_params((*self).into())
610 impl Docs for Trait {
611 fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
612 docs_from_ast(&*self.source(db).1)
616 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
617 pub struct TypeAlias {
618 pub(crate) id: TypeId,
622 pub fn source(&self, db: &impl PersistentHirDatabase) -> (HirFileId, TreeArc<ast::TypeDef>) {
626 pub fn generic_params(&self, db: &impl PersistentHirDatabase) -> Arc<GenericParams> {
627 db.generic_params((*self).into())
630 pub fn module(&self, db: &impl PersistentHirDatabase) -> Module {
634 /// The containing impl block, if this is a method.
635 pub fn impl_block(&self, db: &impl PersistentHirDatabase) -> Option<ImplBlock> {
636 let module_impls = db.impls_in_module(self.module(db));
637 ImplBlock::containing(module_impls, (*self).into())
640 pub fn type_ref(self, db: &impl PersistentHirDatabase) -> Arc<TypeRef> {
641 db.type_alias_ref(self)
644 /// Builds a resolver for the type references in this type alias.
645 pub fn resolver(&self, db: &impl HirDatabase) -> Resolver {
646 // take the outer scope...
649 .map(|ib| ib.resolver(db))
650 .unwrap_or_else(|| self.module(db).resolver(db));
651 // ...and add generic params, if present
652 let p = self.generic_params(db);
653 let r = if !p.params.is_empty() { r.push_generic_params_scope(p) } else { r };
658 impl Docs for TypeAlias {
659 fn docs(&self, db: &impl HirDatabase) -> Option<Documentation> {
660 docs_from_ast(&*self.source(db).1)