bjoernager/rust
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delegation: Implement glob delegation

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This commit is contained in:
Vadim Petrochenkov 2024-03-15 14:21:03 +03:00
parent 7ac6c2fc68
commit 22d0b1ee18
31 changed files with 892 additions and 135 deletions
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9
compiler/rustc_ast/src/ast.rs
View file

@ -3158,13 +3158,16 @@ pub struct Delegation {
pub path: Path,
pub rename: Option<Ident>,
pub body: Option<P<Block>>,
/// The item was expanded from a glob delegation item.
pub from_glob: bool,
}
#[derive(Clone, Encodable, Decodable, Debug)]
pub struct DelegationMac {
pub qself: Option<P<QSelf>>,
pub prefix: Path,
pub suffixes: ThinVec<(Ident, Option<Ident>)>,
// Some for list delegation, and None for glob delegation.
pub suffixes: Option<ThinVec<(Ident, Option<Ident>)>>,
pub body: Option<P<Block>>,
}
@ -3291,7 +3294,7 @@ pub enum ItemKind {
///
/// E.g. `reuse <Type as Trait>::name { target_expr_template }`.
Delegation(Box<Delegation>),
/// A list delegation item (`reuse prefix::{a, b, c}`).
/// A list or glob delegation item (`reuse prefix::{a, b, c}`, `reuse prefix::*`).
/// Treated similarly to a macro call and expanded early.
DelegationMac(Box<DelegationMac>),
}
@ -3372,7 +3375,7 @@ pub enum AssocItemKind {
MacCall(P<MacCall>),
/// An associated delegation item.
Delegation(Box<Delegation>),
/// An associated delegation item list.
/// An associated list or glob delegation item.
DelegationMac(Box<DelegationMac>),
}

38
compiler/rustc_ast/src/mut_visit.rs
View file

@ -1162,7 +1162,14 @@ impl NoopVisitItemKind for ItemKind {
}
ItemKind::MacCall(m) => vis.visit_mac_call(m),
ItemKind::MacroDef(def) => vis.visit_macro_def(def),
ItemKind::Delegation(box Delegation { id, qself, path, rename, body }) => {
ItemKind::Delegation(box Delegation {
id,
qself,
path,
rename,
body,
from_glob: _,
}) => {
vis.visit_id(id);
vis.visit_qself(qself);
vis.visit_path(path);
@ -1176,10 +1183,12 @@ impl NoopVisitItemKind for ItemKind {
ItemKind::DelegationMac(box DelegationMac { qself, prefix, suffixes, body }) => {
vis.visit_qself(qself);
vis.visit_path(prefix);
for (ident, rename) in suffixes {
vis.visit_ident(ident);
if let Some(rename) = rename {
vis.visit_ident(rename);
if let Some(suffixes) = suffixes {
for (ident, rename) in suffixes {
vis.visit_ident(ident);
if let Some(rename) = rename {
vis.visit_ident(rename);
}
}
}
if let Some(body) = body {
@ -1218,7 +1227,14 @@ impl NoopVisitItemKind for AssocItemKind {
visit_opt(ty, |ty| visitor.visit_ty(ty));
}
AssocItemKind::MacCall(mac) => visitor.visit_mac_call(mac),
AssocItemKind::Delegation(box Delegation { id, qself, path, rename, body }) => {
AssocItemKind::Delegation(box Delegation {
id,
qself,
path,
rename,
body,
from_glob: _,
}) => {
visitor.visit_id(id);
visitor.visit_qself(qself);
visitor.visit_path(path);
@ -1232,10 +1248,12 @@ impl NoopVisitItemKind for AssocItemKind {
AssocItemKind::DelegationMac(box DelegationMac { qself, prefix, suffixes, body }) => {
visitor.visit_qself(qself);
visitor.visit_path(prefix);
for (ident, rename) in suffixes {
visitor.visit_ident(ident);
if let Some(rename) = rename {
visitor.visit_ident(rename);
if let Some(suffixes) = suffixes {
for (ident, rename) in suffixes {
visitor.visit_ident(ident);
if let Some(rename) = rename {
visitor.visit_ident(rename);
}
}
}
if let Some(body) = body {

38
compiler/rustc_ast/src/visit.rs
View file

@ -398,7 +398,14 @@ impl WalkItemKind for ItemKind {
}
ItemKind::MacCall(mac) => try_visit!(visitor.visit_mac_call(mac)),
ItemKind::MacroDef(ts) => try_visit!(visitor.visit_mac_def(ts, item.id)),
ItemKind::Delegation(box Delegation { id, qself, path, rename, body }) => {
ItemKind::Delegation(box Delegation {
id,
qself,
path,
rename,
body,
from_glob: _,
}) => {
if let Some(qself) = qself {
try_visit!(visitor.visit_ty(&qself.ty));
}
@ -411,10 +418,12 @@ impl WalkItemKind for ItemKind {
try_visit!(visitor.visit_ty(&qself.ty));
}
try_visit!(visitor.visit_path(prefix, item.id));
for (ident, rename) in suffixes {
visitor.visit_ident(*ident);
if let Some(rename) = rename {
visitor.visit_ident(*rename);
if let Some(suffixes) = suffixes {
for (ident, rename) in suffixes {
visitor.visit_ident(*ident);
if let Some(rename) = rename {
visitor.visit_ident(*rename);
}
}
}
visit_opt!(visitor, visit_block, body);
@ -828,7 +837,14 @@ impl WalkItemKind for AssocItemKind {
AssocItemKind::MacCall(mac) => {
try_visit!(visitor.visit_mac_call(mac));
}
AssocItemKind::Delegation(box Delegation { id, qself, path, rename, body }) => {
AssocItemKind::Delegation(box Delegation {
id,
qself,
path,
rename,
body,
from_glob: _,
}) => {
if let Some(qself) = qself {
try_visit!(visitor.visit_ty(&qself.ty));
}
@ -841,10 +857,12 @@ impl WalkItemKind for AssocItemKind {
try_visit!(visitor.visit_ty(&qself.ty));
}
try_visit!(visitor.visit_path(prefix, item.id));
for (ident, rename) in suffixes {
visitor.visit_ident(*ident);
if let Some(rename) = rename {
visitor.visit_ident(*rename);
if let Some(suffixes) = suffixes {
for (ident, rename) in suffixes {
visitor.visit_ident(*ident);
if let Some(rename) = rename {
visitor.visit_ident(*rename);
}
}
}
visit_opt!(visitor, visit_block, body);