mathieu/os-rust
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Document generics_def_id_map field and record/get methods on it

Browse source
This commit is contained in:
Santiago Pastorino 2022-08-03 17:16:33 -03:00
parent 78585098b5
commit 966269a464
No known key found for this signature in database
GPG key ID: 8131A24E0C79EFAF
2 changed files with 8 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
compiler/rustc_ast_lowering/src/lib.rs
View file

@ -135,7 +135,11 @@ trait ResolverAstLoweringExt {
fn get_lifetime_res(&self, id: NodeId) -> Option<LifetimeRes>;
fn take_extra_lifetime_params(&mut self, id: NodeId) -> Vec<(Ident, NodeId, LifetimeRes)>;
fn decl_macro_kind(&self, def_id: LocalDefId) -> MacroKind;
/// Record the map from `from` local def id to `to` local def id, on `generics_def_id_map`
/// field.
fn record_def_id_remap(&mut self, from: LocalDefId, to: LocalDefId);
/// Get the previously recorded `to` local def id given the `from` local def id, obtained using
/// `generics_def_id_map` field.
fn get_remapped_def_id(&self, local_def_id: LocalDefId) -> LocalDefId;
}

5
compiler/rustc_middle/src/ty/mod.rs
View file

@ -177,7 +177,10 @@ pub struct ResolverAstLowering {
pub label_res_map: NodeMap<ast::NodeId>,
/// Resolutions for lifetimes.
pub lifetimes_res_map: NodeMap<LifetimeRes>,
/// Mapping from generics def-id to RPIT copied generic def-id
/// Mapping from generics `def_id`s to TAIT generics `def_id`s.
/// For each captured lifetime (e.g., 'a), we create a new lifetime parameter that is a generic
/// defined on the TAIT, so we have type Foo<'a1> = ... and we establish a mapping in this
/// field from the original parameter 'a to the new parameter 'a1.
pub generics_def_id_map: Vec<FxHashMap<LocalDefId, LocalDefId>>,
/// Lifetime parameters that lowering will have to introduce.
pub extra_lifetime_params_map: NodeMap<Vec<(Ident, ast::NodeId, LifetimeRes)>>,