//! Contains basic data about various HIR declarations.
-use std::sync::Arc;
+use std::{mem, sync::Arc};
-use hir_expand::{name::Name, InFile};
+use hir_expand::{name::Name, AstId, ExpandResult, HirFileId, InFile, MacroCallId};
use syntax::ast;
use crate::{
attr::Attrs,
- body::Expander,
+ body::{Expander, Mark},
db::DefDatabase,
intern::Interned,
- item_tree::{AssocItem, FnFlags, ItemTreeId, ModItem, Param},
+ item_tree::{self, AssocItem, FnFlags, ItemTreeId, ModItem, Param, TreeId},
+ nameres::{attr_resolution::ResolvedAttr, DefMap},
type_ref::{TraitRef, TypeBound, TypeRef},
visibility::RawVisibility,
- AssocContainerId, AssocItemId, ConstId, ConstLoc, FunctionId, FunctionLoc, HasModule, ImplId,
- Intern, Lookup, ModuleId, StaticId, TraitId, TypeAliasId, TypeAliasLoc,
+ AssocItemId, AstIdWithPath, ConstId, ConstLoc, FunctionId, FunctionLoc, HasModule, ImplId,
+ Intern, ItemContainerId, Lookup, ModuleId, StaticId, TraitId, TypeAliasId, TypeAliasLoc,
};
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct FunctionData {
pub name: Name,
- pub params: Vec<Interned<TypeRef>>,
+ pub params: Vec<(Option<Name>, Interned<TypeRef>)>,
pub ret_type: Interned<TypeRef>,
pub async_ret_type: Option<Interned<TypeRef>>,
pub attrs: Attrs,
pub visibility: RawVisibility,
pub abi: Option<Interned<str>>,
+ pub legacy_const_generics_indices: Vec<u32>,
flags: FnFlags,
}
flags.bits |= FnFlags::IS_VARARGS;
}
+ if matches!(loc.container, ItemContainerId::ExternBlockId(_)) {
+ flags.bits |= FnFlags::IS_IN_EXTERN_BLOCK;
+ }
+
+ let legacy_const_generics_indices = item_tree
+ .attrs(db, krate, ModItem::from(loc.id.value).into())
+ .by_key("rustc_legacy_const_generics")
+ .tt_values()
+ .next()
+ .map(|arg| parse_rustc_legacy_const_generics(arg))
+ .unwrap_or_default();
+
Arc::new(FunctionData {
name: func.name.clone(),
params: enabled_params
.clone()
.filter_map(|id| match &item_tree[id] {
- Param::Normal(ty) => Some(ty.clone()),
+ Param::Normal(name, ty) => Some((name.clone(), ty.clone())),
Param::Varargs => None,
})
.collect(),
attrs: item_tree.attrs(db, krate, ModItem::from(loc.id.value).into()),
visibility: item_tree[func.visibility].clone(),
abi: func.abi.clone(),
+ legacy_const_generics_indices,
flags,
})
}
}
}
+fn parse_rustc_legacy_const_generics(tt: &tt::Subtree) -> Vec<u32> {
+ let mut indices = Vec::new();
+ for args in tt.token_trees.chunks(2) {
+ match &args[0] {
+ tt::TokenTree::Leaf(tt::Leaf::Literal(lit)) => match lit.text.parse() {
+ Ok(index) => indices.push(index),
+ Err(_) => break,
+ },
+ _ => break,
+ }
+
+ if let Some(comma) = args.get(1) {
+ match comma {
+ tt::TokenTree::Leaf(tt::Leaf::Punct(punct)) if punct.char == ',' => {}
+ _ => break,
+ }
+ }
+ }
+
+ indices
+}
+
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct TypeAliasData {
pub name: Name,
name: typ.name.clone(),
type_ref: typ.type_ref.clone(),
visibility: item_tree[typ.visibility].clone(),
- is_extern: typ.is_extern,
+ is_extern: matches!(loc.container, ItemContainerId::ExternBlockId(_)),
bounds: typ.bounds.to_vec(),
})
}
pub is_auto: bool,
pub is_unsafe: bool,
pub visibility: RawVisibility,
+ /// Whether the trait has `#[rust_skip_array_during_method_dispatch]`. `hir_ty` will ignore
+ /// method calls to this trait's methods when the receiver is an array and the crate edition is
+ /// 2015 or 2018.
+ pub skip_array_during_method_dispatch: bool,
+ // box it as the vec is usually empty anyways
+ pub attribute_calls: Option<Box<Vec<(AstId<ast::Item>, MacroCallId)>>>,
}
impl TraitData {
let tr_loc = tr.lookup(db);
let item_tree = tr_loc.id.item_tree(db);
let tr_def = &item_tree[tr_loc.id.value];
+ let _cx = stdx::panic_context::enter(format!(
+ "trait_data_query({:?} -> {:?} -> {:?})",
+ tr, tr_loc, tr_def
+ ));
let name = tr_def.name.clone();
let is_auto = tr_def.is_auto;
let is_unsafe = tr_def.is_unsafe;
let module_id = tr_loc.container;
- let container = AssocContainerId::TraitId(tr);
let visibility = item_tree[tr_def.visibility].clone();
- let mut expander = Expander::new(db, tr_loc.id.file_id(), module_id);
+ let skip_array_during_method_dispatch = item_tree
+ .attrs(db, tr_loc.container.krate(), ModItem::from(tr_loc.id.value).into())
+ .by_key("rustc_skip_array_during_method_dispatch")
+ .exists();
- let items = collect_items(
+ let mut collector = AssocItemCollector::new(
db,
module_id,
- &mut expander,
- tr_def.items.iter().copied(),
tr_loc.id.file_id(),
- container,
- 100,
+ ItemContainerId::TraitId(tr),
);
-
- Arc::new(TraitData { name, items, is_auto, is_unsafe, visibility })
+ collector.collect(tr_loc.id.tree_id(), &tr_def.items);
+
+ Arc::new(TraitData {
+ name,
+ attribute_calls: collector.take_attr_calls(),
+ items: collector.items,
+ is_auto,
+ is_unsafe,
+ visibility,
+ skip_array_during_method_dispatch,
+ })
}
pub fn associated_types(&self) -> impl Iterator<Item = TypeAliasId> + '_ {
_ => None,
})
}
+
+ pub fn method_by_name(&self, name: &Name) -> Option<FunctionId> {
+ self.items.iter().find_map(|(item_name, item)| match item {
+ AssocItemId::FunctionId(t) if item_name == name => Some(*t),
+ _ => None,
+ })
+ }
+
+ pub fn attribute_calls(&self) -> impl Iterator<Item = (AstId<ast::Item>, MacroCallId)> + '_ {
+ self.attribute_calls.iter().flat_map(|it| it.iter()).copied()
+ }
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub self_ty: Interned<TypeRef>,
pub items: Vec<AssocItemId>,
pub is_negative: bool,
+ // box it as the vec is usually empty anyways
+ pub attribute_calls: Option<Box<Vec<(AstId<ast::Item>, MacroCallId)>>>,
}
impl ImplData {
let self_ty = impl_def.self_ty.clone();
let is_negative = impl_def.is_negative;
let module_id = impl_loc.container;
- let container = AssocContainerId::ImplId(id);
- let mut expander = Expander::new(db, impl_loc.id.file_id(), module_id);
- let items = collect_items(
+ let mut collector = AssocItemCollector::new(
db,
module_id,
- &mut expander,
- impl_def.items.iter().copied(),
impl_loc.id.file_id(),
- container,
- 100,
+ ItemContainerId::ImplId(id),
);
- let items = items.into_iter().map(|(_, item)| item).collect();
+ collector.collect(impl_loc.id.tree_id(), &impl_def.items);
+
+ let attribute_calls = collector.take_attr_calls();
+ let items = collector.items.into_iter().map(|(_, item)| item).collect();
- Arc::new(ImplData { target_trait, self_ty, items, is_negative })
+ Arc::new(ImplData { target_trait, self_ty, items, is_negative, attribute_calls })
+ }
+
+ pub fn attribute_calls(&self) -> impl Iterator<Item = (AstId<ast::Item>, MacroCallId)> + '_ {
+ self.attribute_calls.iter().flat_map(|it| it.iter()).copied()
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct ConstData {
- /// const _: () = ();
+ /// `None` for `const _: () = ();`
pub name: Option<Name>,
pub type_ref: Interned<TypeRef>,
pub visibility: RawVisibility,
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct StaticData {
- pub name: Option<Name>,
+ pub name: Name,
pub type_ref: Interned<TypeRef>,
pub visibility: RawVisibility,
pub mutable: bool,
impl StaticData {
pub(crate) fn static_data_query(db: &dyn DefDatabase, konst: StaticId) -> Arc<StaticData> {
- let node = konst.lookup(db);
- let item_tree = node.id.item_tree(db);
- let statik = &item_tree[node.id.value];
+ let loc = konst.lookup(db);
+ let item_tree = loc.id.item_tree(db);
+ let statik = &item_tree[loc.id.value];
Arc::new(StaticData {
- name: Some(statik.name.clone()),
+ name: statik.name.clone(),
type_ref: statik.type_ref.clone(),
visibility: item_tree[statik.visibility].clone(),
mutable: statik.mutable,
- is_extern: statik.is_extern,
+ is_extern: matches!(loc.container, ItemContainerId::ExternBlockId(_)),
})
}
}
-fn collect_items(
- db: &dyn DefDatabase,
- module: ModuleId,
- expander: &mut Expander,
- assoc_items: impl Iterator<Item = AssocItem>,
- file_id: crate::HirFileId,
- container: AssocContainerId,
- limit: usize,
-) -> Vec<(Name, AssocItemId)> {
- if limit == 0 {
- return Vec::new();
- }
+struct AssocItemCollector<'a> {
+ db: &'a dyn DefDatabase,
+ module_id: ModuleId,
+ def_map: Arc<DefMap>,
+ container: ItemContainerId,
+ expander: Expander,
- let item_tree = db.file_item_tree(file_id);
- let crate_graph = db.crate_graph();
- let cfg_options = &crate_graph[module.krate].cfg_options;
+ items: Vec<(Name, AssocItemId)>,
+ attr_calls: Vec<(AstId<ast::Item>, MacroCallId)>,
+}
- let mut items = Vec::new();
- for item in assoc_items {
- let attrs = item_tree.attrs(db, module.krate, ModItem::from(item).into());
- if !attrs.is_cfg_enabled(cfg_options) {
- continue;
+impl<'a> AssocItemCollector<'a> {
+ fn new(
+ db: &'a dyn DefDatabase,
+ module_id: ModuleId,
+ file_id: HirFileId,
+ container: ItemContainerId,
+ ) -> Self {
+ Self {
+ db,
+ module_id,
+ def_map: module_id.def_map(db),
+ container,
+ expander: Expander::new(db, file_id, module_id),
+
+ items: Vec::new(),
+ attr_calls: Vec::new(),
}
+ }
- match item {
- AssocItem::Function(id) => {
- let item = &item_tree[id];
- let def = FunctionLoc { container, id: ItemTreeId::new(file_id, id) }.intern(db);
- items.push((item.name.clone(), def.into()));
- }
- AssocItem::Const(id) => {
- let item = &item_tree[id];
- let name = match item.name.clone() {
- Some(name) => name,
- None => continue,
- };
- let def = ConstLoc { container, id: ItemTreeId::new(file_id, id) }.intern(db);
- items.push((name, def.into()));
+ fn take_attr_calls(&mut self) -> Option<Box<Vec<(AstId<ast::Item>, MacroCallId)>>> {
+ let attribute_calls = mem::take(&mut self.attr_calls);
+ if attribute_calls.is_empty() {
+ None
+ } else {
+ Some(Box::new(attribute_calls))
+ }
+ }
+
+ fn collect(&mut self, tree_id: TreeId, assoc_items: &[AssocItem]) {
+ let item_tree = tree_id.item_tree(self.db);
+
+ 'items: for &item in assoc_items {
+ let attrs = item_tree.attrs(self.db, self.module_id.krate, ModItem::from(item).into());
+ if !attrs.is_cfg_enabled(self.expander.cfg_options()) {
+ continue;
}
- AssocItem::TypeAlias(id) => {
- let item = &item_tree[id];
- let def = TypeAliasLoc { container, id: ItemTreeId::new(file_id, id) }.intern(db);
- items.push((item.name.clone(), def.into()));
+
+ for attr in &*attrs {
+ let ast_id =
+ AstId::new(self.expander.current_file_id(), item.ast_id(&item_tree).upcast());
+ let ast_id_with_path = AstIdWithPath { path: (*attr.path).clone(), ast_id };
+
+ if let Ok(ResolvedAttr::Macro(call_id)) = self.def_map.resolve_attr_macro(
+ self.db,
+ self.module_id.local_id,
+ ast_id_with_path,
+ attr,
+ ) {
+ self.attr_calls.push((ast_id, call_id));
+ let res = self.expander.enter_expand_id(self.db, call_id);
+ self.collect_macro_items(res);
+ continue 'items;
+ }
}
- AssocItem::MacroCall(call) => {
- let call = &item_tree[call];
- let ast_id_map = db.ast_id_map(file_id);
- let root = db.parse_or_expand(file_id).unwrap();
- let call = ast_id_map.get(call.ast_id).to_node(&root);
- let res = expander.enter_expand(db, call);
-
- if let Ok(res) = res {
- if let Some((mark, mac)) = res.value {
- let src: InFile<ast::MacroItems> = expander.to_source(mac);
- let item_tree = db.file_item_tree(src.file_id);
- let iter =
- item_tree.top_level_items().iter().filter_map(ModItem::as_assoc_item);
- items.extend(collect_items(
- db,
- module,
- expander,
- iter,
- src.file_id,
- container,
- limit - 1,
- ));
-
- expander.exit(db, mark);
+
+ match item {
+ AssocItem::Function(id) => {
+ let item = &item_tree[id];
+ let def =
+ FunctionLoc { container: self.container, id: ItemTreeId::new(tree_id, id) }
+ .intern(self.db);
+ self.items.push((item.name.clone(), def.into()));
+ }
+ AssocItem::Const(id) => {
+ let item = &item_tree[id];
+ let name = match item.name.clone() {
+ Some(name) => name,
+ None => continue,
+ };
+ let def =
+ ConstLoc { container: self.container, id: ItemTreeId::new(tree_id, id) }
+ .intern(self.db);
+ self.items.push((name, def.into()));
+ }
+ AssocItem::TypeAlias(id) => {
+ let item = &item_tree[id];
+ let def = TypeAliasLoc {
+ container: self.container,
+ id: ItemTreeId::new(tree_id, id),
+ }
+ .intern(self.db);
+ self.items.push((item.name.clone(), def.into()));
+ }
+ AssocItem::MacroCall(call) => {
+ let call = &item_tree[call];
+ let ast_id_map = self.db.ast_id_map(self.expander.current_file_id());
+ let root = self.db.parse_or_expand(self.expander.current_file_id()).unwrap();
+ let call = ast_id_map.get(call.ast_id).to_node(&root);
+ let _cx =
+ stdx::panic_context::enter(format!("collect_items MacroCall: {}", call));
+ let res = self.expander.enter_expand(self.db, call);
+
+ if let Ok(res) = res {
+ self.collect_macro_items(res);
}
}
}
}
}
- items
+ fn collect_macro_items(&mut self, res: ExpandResult<Option<(Mark, ast::MacroItems)>>) {
+ if let Some((mark, mac)) = res.value {
+ let src: InFile<ast::MacroItems> = self.expander.to_source(mac);
+ let tree_id = item_tree::TreeId::new(src.file_id, None);
+ let item_tree = tree_id.item_tree(self.db);
+ let iter: Vec<_> =
+ item_tree.top_level_items().iter().filter_map(ModItem::as_assoc_item).collect();
+
+ self.collect(tree_id, &iter);
+
+ self.expander.exit(self.db, mark);
+ }
+ }
}
projects / rust.git / blobdiff