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internal: explain that we don't ref in style.md

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This commit is contained in:
Aleksey Kladov 2021-08-02 15:59:28 +03:00
parent 5f3662e01c
commit 12d7f5b56e
8 changed files with 31 additions and 20 deletions
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8
crates/hir/src/lib.rs
View file

@ -217,7 +217,7 @@ impl Crate {
let doc_url = doc_attr_q.tt_values().map(|tt| {
let name = tt.token_trees.iter()
.skip_while(|tt| !matches!(tt, TokenTree::Leaf(Leaf::Ident(Ident{text: ref ident, ..})) if ident == "html_root_url"))
.skip_while(|tt| !matches!(tt, TokenTree::Leaf(Leaf::Ident(Ident { text, ..} )) if text == "html_root_url"))
.nth(2);
match name {
@ -2397,9 +2397,9 @@ impl Type {
}
pub fn fields(&self, db: &dyn HirDatabase) -> Vec<(Field, Type)> {
let (variant_id, substs) = match *self.ty.kind(&Interner) {
TyKind::Adt(hir_ty::AdtId(AdtId::StructId(s)), ref substs) => (s.into(), substs),
TyKind::Adt(hir_ty::AdtId(AdtId::UnionId(u)), ref substs) => (u.into(), substs),
let (variant_id, substs) = match self.ty.kind(&Interner) {
TyKind::Adt(hir_ty::AdtId(AdtId::StructId(s)), substs) => ((*s).into(), substs),
TyKind::Adt(hir_ty::AdtId(AdtId::UnionId(u)), substs) => ((*u).into(), substs),
_ => return Vec::new(),
};

2
crates/hir_def/src/attr.rs
View file

@ -615,7 +615,7 @@ impl DocsRangeMap {
let relative_range = range - line_docs_range.start();
let &InFile { file_id, value: ref source } = &self.source_map.source_of_id(idx);
let InFile { file_id, value: source } = self.source_map.source_of_id(idx);
match source {
Either::Left(_) => None, // FIXME, figure out a nice way to handle doc attributes here
// as well as for whats done in syntax highlight doc injection

3
crates/hir_def/src/resolver.rs
View file

@ -479,7 +479,8 @@ impl Scope {
});
}
}
&Scope::GenericParams { ref params, def: parent } => {
Scope::GenericParams { params, def: parent } => {
let parent = *parent;
for (local_id, param) in params.types.iter() {
if let Some(ref name) = param.name {
let id = TypeParamId { parent, local_id };

4
crates/hir_ty/src/diagnostics/expr.rs
View file

@ -376,12 +376,12 @@ impl ExprValidator {
};
let (params, required) = match mismatch.expected.kind(&Interner) {
TyKind::Adt(AdtId(hir_def::AdtId::EnumId(enum_id)), ref parameters)
TyKind::Adt(AdtId(hir_def::AdtId::EnumId(enum_id)), parameters)
if *enum_id == core_result_enum =>
{
(parameters, "Ok".to_string())
}
TyKind::Adt(AdtId(hir_def::AdtId::EnumId(enum_id)), ref parameters)
TyKind::Adt(AdtId(hir_def::AdtId::EnumId(enum_id)), parameters)
if *enum_id == core_option_enum =>
{
(parameters, "Some".to_string())

9
crates/hir_ty/src/display.rs
View file

@ -381,12 +381,13 @@ impl HirDisplay for Ty {
TyKind::Dyn(dyn_ty) if dyn_ty.bounds.skip_binders().interned().len() > 1 => {
dyn_ty.bounds.skip_binders().interned().iter().cloned().collect()
}
&TyKind::Alias(AliasTy::Opaque(OpaqueTy {
TyKind::Alias(AliasTy::Opaque(OpaqueTy {
opaque_ty_id,
substitution: ref parameters,
substitution: parameters,
}))
| &TyKind::OpaqueType(opaque_ty_id, ref parameters) => {
let impl_trait_id = f.db.lookup_intern_impl_trait_id(opaque_ty_id.into());
| TyKind::OpaqueType(opaque_ty_id, parameters) => {
let impl_trait_id =
f.db.lookup_intern_impl_trait_id((*opaque_ty_id).into());
if let ImplTraitId::ReturnTypeImplTrait(func, idx) = impl_trait_id {
datas =
f.db.return_type_impl_traits(func)

6
crates/hir_ty/src/infer/pat.rs
View file

@ -132,7 +132,7 @@ impl<'a> InferenceContext<'a> {
let expected = expected;
let ty = match &body[pat] {
&Pat::Tuple { ref args, ellipsis } => {
Pat::Tuple { args, ellipsis } => {
let expectations = match expected.as_tuple() {
Some(parameters) => &*parameters.as_slice(&Interner),
_ => &[],
@ -140,7 +140,7 @@ impl<'a> InferenceContext<'a> {
let ((pre, post), n_uncovered_patterns) = match ellipsis {
Some(idx) => {
(args.split_at(idx), expectations.len().saturating_sub(args.len()))
(args.split_at(*idx), expectations.len().saturating_sub(args.len()))
}
None => ((&args[..], &[][..]), 0),
};
@ -157,7 +157,7 @@ impl<'a> InferenceContext<'a> {
TyKind::Tuple(inner_tys.len(), Substitution::from_iter(&Interner, inner_tys))
.intern(&Interner)
}
Pat::Or(ref pats) => {
Pat::Or(pats) => {
if let Some((first_pat, rest)) = pats.split_first() {
let ty = self.infer_pat(*first_pat, &expected, default_bm);
for pat in rest {

10
crates/ide/src/annotations.rs
View file

@ -133,12 +133,12 @@ pub(crate) fn annotations(
}
pub(crate) fn resolve_annotation(db: &RootDatabase, mut annotation: Annotation) -> Annotation {
match annotation.kind {
AnnotationKind::HasImpls { position, ref mut data } => {
*data = goto_implementation(db, position).map(|range| range.info);
match &mut annotation.kind {
AnnotationKind::HasImpls { position, data } => {
*data = goto_implementation(db, *position).map(|range| range.info);
}
AnnotationKind::HasReferences { position, ref mut data } => {
*data = find_all_refs(&Semantics::new(db), position, None).map(|result| {
AnnotationKind::HasReferences { position, data } => {
*data = find_all_refs(&Semantics::new(db), *position, None).map(|result| {
result
.references
.into_iter()

9
docs/dev/style.md
View file

@ -915,6 +915,15 @@ if let Some(expected_type) = ctx.expected_type.as_ref() {
**Rationale:** `match` is almost always more compact.
The `else` branch can get a more precise pattern: `None` or `Err(_)` instead of `_`.
## Match Ergonomics
Don't use the `ref` keyword.
**Rationale:** consistency & simplicity.
`ref` was required before [match ergonomics](https://github.com/rust-lang/rfcs/blob/master/text/2005-match-ergonomics.md).
Today, it is redundant.
Between `ref` and mach ergonomics, the latter is more ergonomic in most cases, and is simpler (does not require a keyword).
## Helper Functions
Avoid creating singe-use helper functions: