bjoernager/rust
bjoernager/rust
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delegation: Implement list delegation

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```rust
reuse prefix::{a, b, c}
```
This commit is contained in:
Vadim Petrochenkov 2024-03-15 14:21:03 +03:00
parent 8387315ab3
commit c30b41012d
29 changed files with 511 additions and 60 deletions
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74
compiler/rustc_ast_pretty/src/pprust/state/item.rs
View file

@ -5,6 +5,7 @@ use crate::pprust::state::{AnnNode, PrintState, State, INDENT_UNIT};
use ast::StaticItem;
use itertools::{Itertools, Position};
use rustc_ast as ast;
use rustc_ast::ptr::P;
use rustc_ast::ModKind;
use rustc_span::symbol::Ident;
@ -374,9 +375,22 @@ impl<'a> State<'a> {
state.print_visibility(&item.vis)
});
}
ast::ItemKind::Delegation(box delegation) => {
self.print_delegation(delegation, &item.vis, &item.attrs)
}
ast::ItemKind::Delegation(deleg) => self.print_delegation(
&item.attrs,
&item.vis,
&deleg.qself,
&deleg.path,
None,
&deleg.body,
),
ast::ItemKind::DelegationMac(deleg) => self.print_delegation(
&item.attrs,
&item.vis,
&deleg.qself,
&deleg.prefix,
Some(&deleg.suffixes),
&deleg.body,
),
}
self.ann.post(self, AnnNode::Item(item))
}
@ -553,31 +567,63 @@ impl<'a> State<'a> {
self.word(";");
}
}
ast::AssocItemKind::Delegation(box delegation) => {
self.print_delegation(delegation, vis, &item.attrs)
}
ast::AssocItemKind::Delegation(deleg) => self.print_delegation(
&item.attrs,
vis,
&deleg.qself,
&deleg.path,
None,
&deleg.body,
),
ast::AssocItemKind::DelegationMac(deleg) => self.print_delegation(
&item.attrs,
vis,
&deleg.qself,
&deleg.prefix,
Some(&deleg.suffixes),
&deleg.body,
),
}
self.ann.post(self, AnnNode::SubItem(id))
}
pub(crate) fn print_delegation(
&mut self,
delegation: &ast::Delegation,
vis: &ast::Visibility,
attrs: &[ast::Attribute],
vis: &ast::Visibility,
qself: &Option<P<ast::QSelf>>,
path: &ast::Path,
suffixes: Option<&[(Ident, Option<Ident>)]>,
body: &Option<P<ast::Block>>,
) {
if delegation.body.is_some() {
if body.is_some() {
self.head("");
}
self.print_visibility(vis);
self.word_space("reuse");
self.word_nbsp("reuse");
if let Some(qself) = &delegation.qself {
self.print_qpath(&delegation.path, qself, false);
if let Some(qself) = qself {
self.print_qpath(path, qself, false);
} else {
self.print_path(&delegation.path, false, 0);
self.print_path(path, false, 0);
}
if let Some(body) = &delegation.body {
if let Some(suffixes) = suffixes {
self.word("::");
self.word("{");
for (i, (ident, rename)) in suffixes.iter().enumerate() {
self.print_ident(*ident);
if let Some(rename) = rename {
self.nbsp();
self.word_nbsp("as");
self.print_ident(*rename);
}
if i != suffixes.len() - 1 {
self.word_space(",");
}
}
self.word("}");
}
if let Some(body) = body {
self.nbsp();
self.print_block_with_attrs(body, attrs);
} else {