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internal: switch to Arc::from_iter

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This commit is contained in:
David Barsky 2023-11-28 10:36:01 -05:00
parent 7e8a3391bb
commit c17dcc8d90
7 changed files with 114 additions and 160 deletions
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119
crates/hir-expand/src/attrs.rs
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@ -44,21 +44,18 @@ impl RawAttrs {
owner: &dyn ast::HasAttrs,
span_map: SpanMapRef<'_>,
) -> Self {
let entries = collect_attrs(owner)
.filter_map(|(id, attr)| match attr {
Either::Left(attr) => {
attr.meta().and_then(|meta| Attr::from_src(db, meta, span_map, id))
}
Either::Right(comment) => comment.doc_comment().map(|doc| Attr {
id,
input: Some(Interned::new(AttrInput::Literal(SmolStr::new(doc)))),
path: Interned::new(ModPath::from(crate::name!(doc))),
ctxt: span_map.span_for_range(comment.syntax().text_range()).ctx,
}),
})
.collect::<Vec<_>>();
// FIXME: use `Arc::from_iter` when it becomes available
let entries: Arc<[Attr]> = Arc::from(entries);
let entries = collect_attrs(owner).filter_map(|(id, attr)| match attr {
Either::Left(attr) => {
attr.meta().and_then(|meta| Attr::from_src(db, meta, span_map, id))
}
Either::Right(comment) => comment.doc_comment().map(|doc| Attr {
id,
input: Some(Interned::new(AttrInput::Literal(SmolStr::new(doc)))),
path: Interned::new(ModPath::from(crate::name!(doc))),
ctxt: span_map.span_for_range(comment.syntax().text_range()).ctx,
}),
});
let entries: Arc<[Attr]> = Arc::from_iter(entries);
Self { entries: if entries.is_empty() { None } else { Some(entries) } }
}
@ -79,19 +76,13 @@ impl RawAttrs {
(Some(a), Some(b)) => {
let last_ast_index = a.last().map_or(0, |it| it.id.ast_index() + 1) as u32;
Self {
entries: Some(Arc::from(
a.iter()
.cloned()
.chain(b.iter().map(|it| {
let mut it = it.clone();
it.id.id = it.id.ast_index() as u32 + last_ast_index
| (it.id.cfg_attr_index().unwrap_or(0) as u32)
<< AttrId::AST_INDEX_BITS;
it
}))
// FIXME: use `Arc::from_iter` when it becomes available
.collect::<Vec<_>>(),
)),
entries: Some(Arc::from_iter(a.iter().cloned().chain(b.iter().map(|it| {
let mut it = it.clone();
it.id.id = it.id.ast_index() as u32 + last_ast_index
| (it.id.cfg_attr_index().unwrap_or(0) as u32)
<< AttrId::AST_INDEX_BITS;
it
})))),
}
}
}
@ -108,49 +99,43 @@ impl RawAttrs {
}
let crate_graph = db.crate_graph();
let new_attrs = Arc::from(
self.iter()
.flat_map(|attr| -> SmallVec<[_; 1]> {
let is_cfg_attr =
attr.path.as_ident().map_or(false, |name| *name == crate::name![cfg_attr]);
if !is_cfg_attr {
return smallvec![attr.clone()];
}
let new_attrs = Arc::from_iter(self.iter().flat_map(|attr| -> SmallVec<[_; 1]> {
let is_cfg_attr =
attr.path.as_ident().map_or(false, |name| *name == crate::name![cfg_attr]);
if !is_cfg_attr {
return smallvec![attr.clone()];
}
let subtree = match attr.token_tree_value() {
Some(it) => it,
_ => return smallvec![attr.clone()],
let subtree = match attr.token_tree_value() {
Some(it) => it,
_ => return smallvec![attr.clone()],
};
let (cfg, parts) = match parse_cfg_attr_input(subtree) {
Some(it) => it,
None => return smallvec![attr.clone()],
};
let index = attr.id;
let attrs =
parts.enumerate().take(1 << AttrId::CFG_ATTR_BITS).filter_map(|(idx, attr)| {
let tree = Subtree {
delimiter: tt::Delimiter::dummy_invisible(),
token_trees: attr.to_vec(),
};
Attr::from_tt(db, &tree, index.with_cfg_attr(idx))
});
let (cfg, parts) = match parse_cfg_attr_input(subtree) {
Some(it) => it,
None => return smallvec![attr.clone()],
};
let index = attr.id;
let attrs = parts.enumerate().take(1 << AttrId::CFG_ATTR_BITS).filter_map(
|(idx, attr)| {
let tree = Subtree {
delimiter: tt::Delimiter::dummy_invisible(),
token_trees: attr.to_vec(),
};
Attr::from_tt(db, &tree, index.with_cfg_attr(idx))
},
);
let cfg_options = &crate_graph[krate].cfg_options;
let cfg = Subtree { delimiter: subtree.delimiter, token_trees: cfg.to_vec() };
let cfg = CfgExpr::parse(&cfg);
if cfg_options.check(&cfg) == Some(false) {
smallvec![]
} else {
cov_mark::hit!(cfg_attr_active);
let cfg_options = &crate_graph[krate].cfg_options;
let cfg = Subtree { delimiter: subtree.delimiter, token_trees: cfg.to_vec() };
let cfg = CfgExpr::parse(&cfg);
if cfg_options.check(&cfg) == Some(false) {
smallvec![]
} else {
cov_mark::hit!(cfg_attr_active);
attrs.collect()
}
})
// FIXME: use `Arc::from_iter` when it becomes available
.collect::<Vec<_>>(),
);
attrs.collect()
}
}));
RawAttrs { entries: Some(new_attrs) }
}