1 //! Contains basic data about various HIR declarations.
5 use hir_expand::{name::Name, InFile};
13 item_tree::{AssocItem, ItemTreeId, ModItem},
14 type_ref::{TypeBound, TypeRef},
15 visibility::RawVisibility,
16 AssocContainerId, AssocItemId, ConstId, ConstLoc, FunctionId, FunctionLoc, HasModule, ImplId,
17 Intern, Lookup, ModuleId, StaticId, TraitId, TypeAliasId, TypeAliasLoc,
20 #[derive(Debug, Clone, PartialEq, Eq)]
21 pub struct FunctionData {
23 pub params: Vec<TypeRef>,
24 pub ret_type: TypeRef,
26 /// True if the first param is `self`. This is relevant to decide whether this
27 /// can be called as a method.
28 pub has_self_param: bool,
30 pub visibility: RawVisibility,
34 pub(crate) fn fn_data_query(db: &impl DefDatabase, func: FunctionId) -> Arc<FunctionData> {
35 let loc = func.lookup(db);
36 let item_tree = db.item_tree(loc.id.file_id);
37 let func = &item_tree[loc.id.value];
39 Arc::new(FunctionData {
40 name: func.name.clone(),
41 params: func.params.clone(),
42 ret_type: func.ret_type.clone(),
43 attrs: func.attrs.clone(),
44 has_self_param: func.has_self_param,
45 is_unsafe: func.is_unsafe,
46 visibility: func.visibility.clone(),
51 #[derive(Debug, Clone, PartialEq, Eq)]
52 pub struct TypeAliasData {
54 pub type_ref: Option<TypeRef>,
55 pub visibility: RawVisibility,
56 /// Bounds restricting the type alias itself (eg. `type Ty: Bound;` in a trait or impl).
57 pub bounds: Vec<TypeBound>,
61 pub(crate) fn type_alias_data_query(
64 ) -> Arc<TypeAliasData> {
65 let loc = typ.lookup(db);
66 let item_tree = db.item_tree(loc.id.file_id);
67 let typ = &item_tree[loc.id.value];
69 Arc::new(TypeAliasData {
70 name: typ.name.clone(),
71 type_ref: typ.type_ref.clone(),
72 visibility: typ.visibility.clone(),
73 bounds: typ.bounds.clone(),
78 #[derive(Debug, Clone, PartialEq, Eq)]
79 pub struct TraitData {
81 pub items: Vec<(Name, AssocItemId)>,
86 pub(crate) fn trait_data_query(db: &dyn DefDatabase, tr: TraitId) -> Arc<TraitData> {
87 let tr_loc = tr.lookup(db);
88 let item_tree = db.item_tree(tr_loc.id.file_id);
89 let tr_def = &item_tree[tr_loc.id.value];
90 let name = tr_def.name.clone();
91 let auto = tr_def.auto;
92 let module_id = tr_loc.container.module(db);
93 let container = AssocContainerId::TraitId(tr);
94 let mut expander = Expander::new(db, tr_loc.id.file_id, module_id);
96 let items = collect_items(
100 tr_def.items.iter().copied(),
106 Arc::new(TraitData { name, items, auto })
109 pub fn associated_types(&self) -> impl Iterator<Item = TypeAliasId> + '_ {
110 self.items.iter().filter_map(|(_name, item)| match item {
111 AssocItemId::TypeAliasId(t) => Some(*t),
116 pub fn associated_type_by_name(&self, name: &Name) -> Option<TypeAliasId> {
117 self.items.iter().find_map(|(item_name, item)| match item {
118 AssocItemId::TypeAliasId(t) if item_name == name => Some(*t),
124 #[derive(Debug, Clone, PartialEq, Eq)]
125 pub struct ImplData {
126 pub target_trait: Option<TypeRef>,
127 pub target_type: TypeRef,
128 pub items: Vec<AssocItemId>,
129 pub is_negative: bool,
133 pub(crate) fn impl_data_query(db: &dyn DefDatabase, id: ImplId) -> Arc<ImplData> {
134 let _p = profile("impl_data_query");
135 let impl_loc = id.lookup(db);
137 let item_tree = db.item_tree(impl_loc.id.file_id);
138 let impl_def = &item_tree[impl_loc.id.value];
139 let target_trait = impl_def.target_trait.clone();
140 let target_type = impl_def.target_type.clone();
141 let is_negative = impl_def.is_negative;
142 let module_id = impl_loc.container.module(db);
143 let container = AssocContainerId::ImplId(id);
144 let mut expander = Expander::new(db, impl_loc.id.file_id, module_id);
146 let items = collect_items(
150 impl_def.items.iter().copied(),
155 let items = items.into_iter().map(|(_, item)| item).collect();
157 Arc::new(ImplData { target_trait, target_type, items, is_negative })
161 #[derive(Debug, Clone, PartialEq, Eq)]
162 pub struct ConstData {
163 /// const _: () = ();
164 pub name: Option<Name>,
165 pub type_ref: TypeRef,
166 pub visibility: RawVisibility,
170 pub(crate) fn const_data_query(db: &dyn DefDatabase, konst: ConstId) -> Arc<ConstData> {
171 let loc = konst.lookup(db);
172 let item_tree = db.item_tree(loc.id.file_id);
173 let konst = &item_tree[loc.id.value];
176 name: konst.name.clone(),
177 type_ref: konst.type_ref.clone(),
178 visibility: konst.visibility.clone(),
183 #[derive(Debug, Clone, PartialEq, Eq)]
184 pub struct StaticData {
185 pub name: Option<Name>,
186 pub type_ref: TypeRef,
187 pub visibility: RawVisibility,
192 pub(crate) fn static_data_query(db: &dyn DefDatabase, konst: StaticId) -> Arc<StaticData> {
193 let node = konst.lookup(db);
194 let item_tree = db.item_tree(node.id.file_id);
195 let statik = &item_tree[node.id.value];
197 Arc::new(StaticData {
198 name: Some(statik.name.clone()),
199 type_ref: statik.type_ref.clone(),
200 visibility: statik.visibility.clone(),
201 mutable: statik.mutable,
207 db: &dyn DefDatabase,
209 expander: &mut Expander,
210 assoc_items: impl Iterator<Item = AssocItem>,
211 file_id: crate::HirFileId,
212 container: AssocContainerId,
214 ) -> Vec<(Name, AssocItemId)> {
219 let item_tree = db.item_tree(file_id);
220 let cfg_options = db.crate_graph()[module.krate].cfg_options.clone();
222 let mut items = Vec::new();
223 for item in assoc_items {
225 AssocItem::Function(id) => {
226 let item = &item_tree[id];
227 if !item.attrs.is_cfg_enabled(&cfg_options) {
230 let def = FunctionLoc { container, id: ItemTreeId::new(file_id, id) }.intern(db);
231 items.push((item.name.clone(), def.into()));
234 AssocItem::Const(id) => {
235 let item = &item_tree[id];
236 let name = if let Some(name) = item.name.clone() {
241 let def = ConstLoc { container, id: ItemTreeId::new(file_id, id) }.intern(db);
242 items.push((name, def.into()));
244 AssocItem::TypeAlias(id) => {
245 let item = &item_tree[id];
246 let def = TypeAliasLoc { container, id: ItemTreeId::new(file_id, id) }.intern(db);
247 items.push((item.name.clone(), def.into()));
249 AssocItem::MacroCall(call) => {
250 let call = &item_tree[call];
251 let ast_id_map = db.ast_id_map(file_id);
252 let root = db.parse_or_expand(file_id).unwrap();
253 let call = ast_id_map.get(call.ast_id).to_node(&root);
255 if let Some((mark, mac)) = expander.enter_expand(db, None, call) {
256 let src: InFile<ast::MacroItems> = expander.to_source(mac);
257 let item_tree = db.item_tree(src.file_id);
259 item_tree.top_level_items().iter().filter_map(ModItem::as_assoc_item);
260 items.extend(collect_items(
270 expander.exit(db, mark);