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internal: Make block_def_map infallible

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This commit is contained in:
Lukas Wirth 2023-04-14 12:15:48 +02:00
parent 10e0aaf284
commit c32d51979d
9 changed files with 32 additions and 60 deletions
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4
crates/hir-def/src/body.rs
View file

@ -461,9 +461,7 @@ impl Body {
&'a self,
db: &'a dyn DefDatabase,
) -> impl Iterator<Item = (BlockId, Arc<DefMap>)> + '_ {
self.block_scopes
.iter()
.map(move |&block| (block, db.block_def_map(block).expect("block ID without DefMap")))
self.block_scopes.iter().map(move |&block| (block, db.block_def_map(block)))
}
pub fn pretty_print(&self, db: &dyn DefDatabase, owner: DefWithBodyId) -> String {

17
crates/hir-def/src/body/lower.rs
View file

@ -948,15 +948,14 @@ impl ExprCollector<'_> {
None
};
let (module, def_map) = match block_id
.and_then(|block_id| self.db.block_def_map(block_id).zip(Some(block_id)))
{
Some((def_map, block_id)) => {
self.body.block_scopes.push(block_id);
(def_map.root(), def_map)
}
None => (self.expander.module, self.expander.def_map.clone()),
};
let (module, def_map) =
match block_id.map(|block_id| (self.db.block_def_map(block_id), block_id)) {
Some((def_map, block_id)) => {
self.body.block_scopes.push(block_id);
(def_map.root(), def_map)
}
None => (self.expander.module, self.expander.def_map.clone()),
};
let prev_def_map = mem::replace(&mut self.expander.def_map, def_map);
let prev_local_module = mem::replace(&mut self.expander.module, module);

2
crates/hir-def/src/db.rs
View file

@ -96,7 +96,7 @@ pub trait DefDatabase: InternDatabase + ExpandDatabase + Upcast<dyn ExpandDataba
// FIXME: This actually can't return None anymore as we no longer allocate block scopes for
// non item declaring blocks
#[salsa::invoke(DefMap::block_def_map_query)]
fn block_def_map(&self, block: BlockId) -> Option<Arc<DefMap>>;
fn block_def_map(&self, block: BlockId) -> Arc<DefMap>;
#[salsa::invoke(StructData::struct_data_query)]
fn struct_data(&self, id: StructId) -> Arc<StructData>;

8
crates/hir-def/src/lib.rs
View file

@ -101,13 +101,7 @@ pub struct ModuleId {
impl ModuleId {
pub fn def_map(&self, db: &dyn db::DefDatabase) -> Arc<DefMap> {
match self.block {
Some(block) => {
db.block_def_map(block).unwrap_or_else(|| {
// NOTE: This should be unreachable - all `ModuleId`s come from their `DefMap`s,
// so the `DefMap` here must exist.
unreachable!("no `block_def_map` for `ModuleId` {:?}", self);
})
}
Some(block) => db.block_def_map(block),
None => db.crate_def_map(self.krate),
}
}

11
crates/hir-def/src/nameres.rs
View file

@ -243,17 +243,10 @@ impl DefMap {
Arc::new(def_map)
}
pub(crate) fn block_def_map_query(
db: &dyn DefDatabase,
block_id: BlockId,
) -> Option<Arc<DefMap>> {
pub(crate) fn block_def_map_query(db: &dyn DefDatabase, block_id: BlockId) -> Arc<DefMap> {
let block: BlockLoc = db.lookup_intern_block(block_id);
let tree_id = TreeId::new(block.ast_id.file_id, Some(block_id));
let item_tree = tree_id.item_tree(db);
if item_tree.top_level_items().is_empty() {
return None;
}
let parent_map = block.module.def_map(db);
let krate = block.module.krate;
@ -269,7 +262,7 @@ impl DefMap {
def_map.block = Some(BlockInfo { block: block_id, parent: block.module });
let def_map = collector::collect_defs(db, def_map, tree_id);
Some(Arc::new(def_map))
Arc::new(def_map)
}
fn empty(krate: CrateId, edition: Edition, module_data: ModuleData) -> DefMap {

28
crates/hir-def/src/resolver.rs
View file

@ -572,15 +572,12 @@ impl Resolver {
scope_id,
}));
if let Some(block) = expr_scopes.block(scope_id) {
if let Some(def_map) = db.block_def_map(block) {
let root = def_map.root();
resolver
.scopes
.push(Scope::BlockScope(ModuleItemMap { def_map, module_id: root }));
// FIXME: This adds as many module scopes as there are blocks, but resolving in each
// already traverses all parents, so this is O(n²). I think we could only store the
// innermost module scope instead?
}
let def_map = db.block_def_map(block);
let root = def_map.root();
resolver.scopes.push(Scope::BlockScope(ModuleItemMap { def_map, module_id: root }));
// FIXME: This adds as many module scopes as there are blocks, but resolving in each
// already traverses all parents, so this is O(n²). I think we could only store the
// innermost module scope instead?
}
}
@ -741,13 +738,12 @@ fn resolver_for_scope_(
for scope in scope_chain.into_iter().rev() {
if let Some(block) = scopes.block(scope) {
if let Some(def_map) = db.block_def_map(block) {
let root = def_map.root();
r = r.push_block_scope(def_map, root);
// FIXME: This adds as many module scopes as there are blocks, but resolving in each
// already traverses all parents, so this is O(n²). I think we could only store the
// innermost module scope instead?
}
let def_map = db.block_def_map(block);
let root = def_map.root();
r = r.push_block_scope(def_map, root);
// FIXME: This adds as many module scopes as there are blocks, but resolving in each
// already traverses all parents, so this is O(n²). I think we could only store the
// innermost module scope instead?
}
r = r.push_expr_scope(owner, Arc::clone(&scopes), scope);

8
crates/hir-def/src/test_db.rs
View file

@ -210,13 +210,11 @@ impl TestDB {
});
for scope in scope_iter {
let containing_blocks =
let mut containing_blocks =
scopes.scope_chain(Some(scope)).filter_map(|scope| scopes.block(scope));
for block in containing_blocks {
if let Some(def_map) = self.block_def_map(block) {
return Some(def_map);
}
if let Some(block) = containing_blocks.next().map(|block| self.block_def_map(block)) {
return Some(block);
}
}

5
crates/hir-ty/src/chalk_db.rs
View file

@ -129,10 +129,7 @@ impl<'a> chalk_solve::RustIrDatabase<Interner> for ChalkContext<'a> {
let impl_maps = [in_deps, in_self];
let block_impls = iter::successors(self.block, |&block_id| {
cov_mark::hit!(block_local_impls);
self.db
.block_def_map(block_id)
.and_then(|map| map.parent())
.and_then(|module| module.containing_block())
self.db.block_def_map(block_id).parent().and_then(|module| module.containing_block())
})
.inspect(|&block_id| {
// make sure we don't search the same block twice

9
crates/hir-ty/src/method_resolution.rs
View file

@ -156,7 +156,7 @@ impl TraitImpls {
let _p = profile::span("trait_impls_in_block_query");
let mut impls = Self { map: FxHashMap::default() };
let block_def_map = db.block_def_map(block)?;
let block_def_map = db.block_def_map(block);
impls.collect_def_map(db, &block_def_map);
impls.shrink_to_fit();
@ -290,7 +290,7 @@ impl InherentImpls {
let _p = profile::span("inherent_impls_in_block_query");
let mut impls = Self { map: FxHashMap::default(), invalid_impls: Vec::default() };
let block_def_map = db.block_def_map(block)?;
let block_def_map = db.block_def_map(block);
impls.collect_def_map(db, &block_def_map);
impls.shrink_to_fit();
@ -1191,10 +1191,7 @@ fn iterate_inherent_methods(
)?;
}
block = db
.block_def_map(block_id)
.and_then(|map| map.parent())
.and_then(|module| module.containing_block());
block = db.block_def_map(block_id).parent().and_then(|module| module.containing_block());
}
for krate in def_crates {