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rustc_index: Add a ZERO constant to index types

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It is commonly used.
This commit is contained in:
Vadim Petrochenkov
2024-04-03 17:49:59 +03:00
parent ceab6128fa
commit b40ea03f8a
42 changed files with 80 additions and 90 deletions
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8
compiler/rustc_ast_lowering/src/lib.rs
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@@ -157,7 +157,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
attrs: SortedMap::default(),
children: Vec::default(),
current_hir_id_owner: hir::CRATE_OWNER_ID,
item_local_id_counter: hir::ItemLocalId::new(0),
item_local_id_counter: hir::ItemLocalId::ZERO,
node_id_to_local_id: Default::default(),
trait_map: Default::default(),
@@ -583,7 +583,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
// and the caller to refer to some of the subdefinitions' nodes' `LocalDefId`s.
// Always allocate the first `HirId` for the owner itself.
let _old = self.node_id_to_local_id.insert(owner, hir::ItemLocalId::new(0));
let _old = self.node_id_to_local_id.insert(owner, hir::ItemLocalId::ZERO);
debug_assert_eq!(_old, None);
let item = f(self);
@@ -677,7 +677,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
v.insert(local_id);
self.item_local_id_counter.increment_by(1);
assert_ne!(local_id, hir::ItemLocalId::new(0));
assert_ne!(local_id, hir::ItemLocalId::ZERO);
if let Some(def_id) = self.opt_local_def_id(ast_node_id) {
self.children.push((def_id, hir::MaybeOwner::NonOwner(hir_id)));
}
@@ -696,7 +696,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
fn next_id(&mut self) -> hir::HirId {
let owner = self.current_hir_id_owner;
let local_id = self.item_local_id_counter;
assert_ne!(local_id, hir::ItemLocalId::new(0));
assert_ne!(local_id, hir::ItemLocalId::ZERO);
self.item_local_id_counter.increment_by(1);
hir::HirId { owner, local_id }
}