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Merge #10819

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10819: internal: Replace some `Vec` occurences with `Box`  r=Veykril a=Veykril

Shaves off ~15mb from self analysis

Co-authored-by: Lukas Wirth <lukastw97@gmail.com>
This commit is contained in:
bors[bot] 2021-11-20 15:40:56 +00:00 committed by GitHub
commit f2707bce36
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8 changed files with 78 additions and 100 deletions
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35
crates/hir_def/src/body/lower.rs
View File

@ -130,11 +130,7 @@ impl ExprCollector<'_> {
self.body.params.push(param_pat);
}
for param in param_list.params() {
let pat = match param.pat() {
None => continue,
Some(pat) => pat,
};
for pat in param_list.params().filter_map(|param| param.pat()) {
let param_pat = self.collect_pat(pat);
self.body.params.push(param_pat);
}
@ -160,7 +156,7 @@ impl ExprCollector<'_> {
self.make_expr(expr, Err(SyntheticSyntax))
}
fn unit(&mut self) -> ExprId {
self.alloc_expr_desugared(Expr::Tuple { exprs: Vec::new() })
self.alloc_expr_desugared(Expr::Tuple { exprs: Box::default() })
}
fn missing_expr(&mut self) -> ExprId {
self.alloc_expr_desugared(Expr::Missing)
@ -235,7 +231,8 @@ impl ExprCollector<'_> {
expr: else_branch.unwrap_or_else(|| self.unit()),
guard: None,
},
];
]
.into();
return Some(
self.alloc_expr(Expr::Match { expr: match_expr, arms }, syntax_ptr),
);
@ -300,7 +297,8 @@ impl ExprCollector<'_> {
let arms = vec![
MatchArm { pat, expr: body, guard: None },
MatchArm { pat: placeholder_pat, expr: break_, guard: None },
];
]
.into();
let match_expr =
self.alloc_expr_desugared(Expr::Match { expr: match_expr, arms });
return Some(
@ -324,7 +322,7 @@ impl ExprCollector<'_> {
let args = if let Some(arg_list) = e.arg_list() {
arg_list.args().filter_map(|e| self.maybe_collect_expr(e)).collect()
} else {
Vec::new()
Box::default()
};
self.alloc_expr(Expr::Call { callee, args }, syntax_ptr)
}
@ -333,7 +331,7 @@ impl ExprCollector<'_> {
let args = if let Some(arg_list) = e.arg_list() {
arg_list.args().filter_map(|e| self.maybe_collect_expr(e)).collect()
} else {
Vec::new()
Box::default()
};
let method_name = e.name_ref().map(|nr| nr.as_name()).unwrap_or_else(Name::missing);
let generic_args = e
@ -367,7 +365,7 @@ impl ExprCollector<'_> {
})
.collect()
} else {
Vec::new()
Box::default()
};
self.alloc_expr(Expr::Match { expr, arms }, syntax_ptr)
}
@ -429,7 +427,7 @@ impl ExprCollector<'_> {
let spread = nfl.spread().map(|s| self.collect_expr(s));
Expr::RecordLit { path, fields, spread }
} else {
Expr::RecordLit { path, fields: Vec::new(), spread: None }
Expr::RecordLit { path, fields: Box::default(), spread: None }
};
self.alloc_expr(record_lit, syntax_ptr)
@ -496,7 +494,10 @@ impl ExprCollector<'_> {
.and_then(|r| r.ty())
.map(|it| Interned::new(TypeRef::from_ast(&self.ctx(), it)));
let body = self.collect_expr_opt(e.body());
self.alloc_expr(Expr::Lambda { args, arg_types, ret_type, body }, syntax_ptr)
self.alloc_expr(
Expr::Lambda { args: args.into(), arg_types: arg_types.into(), ret_type, body },
syntax_ptr,
)
}
ast::Expr::BinExpr(e) => {
let lhs = self.collect_expr_opt(e.lhs());
@ -718,7 +719,7 @@ impl ExprCollector<'_> {
self.statements_in_scope.pop();
}
let tail = tail;
let statements = std::mem::replace(&mut self.statements_in_scope, prev_statements);
let statements = std::mem::replace(&mut self.statements_in_scope, prev_statements).into();
let syntax_node_ptr = AstPtr::new(&block.into());
let expr_id = self.alloc_expr(
Expr::Block { id: block_id, statements, tail, label: None },
@ -812,7 +813,7 @@ impl ExprCollector<'_> {
ast::Pat::RecordPat(p) => {
let path =
p.path().and_then(|path| self.expander.parse_path(self.db, path)).map(Box::new);
let args: Vec<_> = p
let args = p
.record_pat_field_list()
.expect("every struct should have a field list")
.fields()
@ -902,7 +903,7 @@ impl ExprCollector<'_> {
}
}
fn collect_tuple_pat(&mut self, args: AstChildren<ast::Pat>) -> (Vec<PatId>, Option<usize>) {
fn collect_tuple_pat(&mut self, args: AstChildren<ast::Pat>) -> (Box<[PatId]>, Option<usize>) {
// Find the location of the `..`, if there is one. Note that we do not
// consider the possibility of there being multiple `..` here.
let ellipsis = args.clone().position(|p| matches!(p, ast::Pat::RestPat(_)));
@ -961,7 +962,7 @@ impl From<ast::LiteralKind> for Literal {
Literal::Float(Default::default(), ty)
}
LiteralKind::ByteString(bs) => {
let text = bs.value().map(Vec::from).unwrap_or_else(Default::default);
let text = bs.value().map(Box::from).unwrap_or_else(Default::default);
Literal::ByteString(text)
}
LiteralKind::String(_) => Literal::String(Default::default()),

2
crates/hir_def/src/body/scope.rs
View File

@ -204,7 +204,7 @@ fn compute_expr_scopes(expr: ExprId, body: &Body, scopes: &mut ExprScopes, scope
}
Expr::Match { expr, arms } => {
compute_expr_scopes(*expr, body, scopes, scope);
for arm in arms {
for arm in arms.iter() {
let mut scope = scopes.new_scope(scope);
scopes.add_bindings(body, scope, arm.pat);
match arm.guard {

88
crates/hir_def/src/expr.rs
View File

@ -40,8 +40,8 @@ pub type LabelId = Idx<Label>;
#[derive(Debug, Clone, Eq, PartialEq)]
pub enum Literal {
String(String),
ByteString(Vec<u8>),
String(Box<str>),
ByteString(Box<[u8]>),
Char(char),
Bool(bool),
Int(i128, Option<BuiltinInt>),
@ -61,7 +61,7 @@ pub enum Expr {
},
Block {
id: BlockId,
statements: Vec<Statement>,
statements: Box<[Statement]>,
tail: Option<ExprId>,
label: Option<LabelId>,
},
@ -82,17 +82,17 @@ pub enum Expr {
},
Call {
callee: ExprId,
args: Vec<ExprId>,
args: Box<[ExprId]>,
},
MethodCall {
receiver: ExprId,
method_name: Name,
args: Vec<ExprId>,
args: Box<[ExprId]>,
generic_args: Option<Box<GenericArgs>>,
},
Match {
expr: ExprId,
arms: Vec<MatchArm>,
arms: Box<[MatchArm]>,
},
Continue {
label: Option<Name>,
@ -109,7 +109,7 @@ pub enum Expr {
},
RecordLit {
path: Option<Box<Path>>,
fields: Vec<RecordLitField>,
fields: Box<[RecordLitField]>,
spread: Option<ExprId>,
},
Field {
@ -162,13 +162,13 @@ pub enum Expr {
index: ExprId,
},
Lambda {
args: Vec<PatId>,
arg_types: Vec<Option<Interned<TypeRef>>>,
args: Box<[PatId]>,
arg_types: Box<[Option<Interned<TypeRef>>]>,
ret_type: Option<Interned<TypeRef>>,
body: ExprId,
},
Tuple {
exprs: Vec<ExprId>,
exprs: Box<[ExprId]>,
},
Unsafe {
body: ExprId,
@ -182,7 +182,7 @@ pub enum Expr {
#[derive(Debug, Clone, Eq, PartialEq)]
pub enum Array {
ElementList(Vec<ExprId>),
ElementList(Box<[ExprId]>),
Repeat { initializer: ExprId, repeat: ExprId },
}
@ -228,23 +228,23 @@ impl Expr {
Expr::If { condition, then_branch, else_branch } => {
f(*condition);
f(*then_branch);
if let Some(else_branch) = else_branch {
f(*else_branch);
if let &Some(else_branch) = else_branch {
f(else_branch);
}
}
Expr::Block { statements, tail, .. } => {
for stmt in statements {
for stmt in statements.iter() {
match stmt {
Statement::Let { initializer, .. } => {
if let Some(expr) = initializer {
f(*expr);
if let &Some(expr) = initializer {
f(expr);
}
}
Statement::Expr { expr: expression, .. } => f(*expression),
}
}
if let Some(expr) = tail {
f(*expr);
if let &Some(expr) = tail {
f(expr);
}
}
Expr::TryBlock { body }
@ -262,34 +262,28 @@ impl Expr {
}
Expr::Call { callee, args } => {
f(*callee);
for arg in args {
f(*arg);
}
args.iter().copied().for_each(f);
}
Expr::MethodCall { receiver, args, .. } => {
f(*receiver);
for arg in args {
f(*arg);
}
args.iter().copied().for_each(f);
}
Expr::Match { expr, arms } => {
f(*expr);
for arm in arms {
f(arm.expr);
}
arms.iter().map(|arm| arm.expr).for_each(f);
}
Expr::Continue { .. } => {}
Expr::Break { expr, .. } | Expr::Return { expr } | Expr::Yield { expr } => {
if let Some(expr) = expr {
f(*expr);
if let &Some(expr) = expr {
f(expr);
}
}
Expr::RecordLit { fields, spread, .. } => {
for field in fields {
for field in fields.iter() {
f(field.expr);
}
if let Some(expr) = spread {
f(*expr);
if let &Some(expr) = spread {
f(expr);
}
}
Expr::Lambda { body, .. } => {
@ -300,11 +294,11 @@ impl Expr {
f(*rhs);
}
Expr::Range { lhs, rhs, .. } => {
if let Some(lhs) = rhs {
f(*lhs);
if let &Some(lhs) = rhs {
f(lhs);
}
if let Some(rhs) = lhs {
f(*rhs);
if let &Some(rhs) = lhs {
f(rhs);
}
}
Expr::Index { base, index } => {
@ -320,17 +314,9 @@ impl Expr {
| Expr::Box { expr } => {
f(*expr);
}
Expr::Tuple { exprs } => {
for expr in exprs {
f(*expr);
}
}
Expr::Tuple { exprs } => exprs.iter().copied().for_each(f),
Expr::Array(a) => match a {
Array::ElementList(exprs) => {
for expr in exprs {
f(*expr);
}
}
Array::ElementList(exprs) => exprs.iter().copied().for_each(f),
Array::Repeat { initializer, repeat } => {
f(*initializer);
f(*repeat)
@ -386,15 +372,15 @@ pub struct RecordFieldPat {
pub enum Pat {
Missing,
Wild,
Tuple { args: Vec<PatId>, ellipsis: Option<usize> },
Or(Vec<PatId>),
Record { path: Option<Box<Path>>, args: Vec<RecordFieldPat>, ellipsis: bool },
Tuple { args: Box<[PatId]>, ellipsis: Option<usize> },
Or(Box<[PatId]>),
Record { path: Option<Box<Path>>, args: Box<[RecordFieldPat]>, ellipsis: bool },
Range { start: ExprId, end: ExprId },
Slice { prefix: Vec<PatId>, slice: Option<PatId>, suffix: Vec<PatId> },
Slice { prefix: Box<[PatId]>, slice: Option<PatId>, suffix: Box<[PatId]> },
Path(Box<Path>),
Lit(ExprId),
Bind { mode: BindingAnnotation, name: Name, subpat: Option<PatId> },
TupleStruct { path: Option<Box<Path>>, args: Vec<PatId>, ellipsis: Option<usize> },
TupleStruct { path: Option<Box<Path>>, args: Box<[PatId]>, ellipsis: Option<usize> },
Ref { pat: PatId, mutability: Mutability },
Box { inner: PatId },
ConstBlock(ExprId),

16
crates/hir_def/src/path.rs
View File

@ -22,7 +22,7 @@ pub struct ModPath {
segments: Vec<Name>,
}
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub enum PathKind {
Plain,
/// `self::` is `Super(0)`
@ -119,7 +119,7 @@ pub struct Path {
type_anchor: Option<Interned<TypeRef>>,
mod_path: Interned<ModPath>,
/// Invariant: the same len as `self.mod_path.segments`
generic_args: Vec<Option<Interned<GenericArgs>>>,
generic_args: Box<[Option<Interned<GenericArgs>>]>,
}
/// Generic arguments to a path segment (e.g. the `i32` in `Option<i32>`). This
@ -171,9 +171,9 @@ impl Path {
/// Converts a known mod path to `Path`.
pub fn from_known_path(
path: ModPath,
generic_args: Vec<Option<Interned<GenericArgs>>>,
generic_args: impl Into<Box<[Option<Interned<GenericArgs>>]>>,
) -> Path {
Path { type_anchor: None, mod_path: Interned::new(path), generic_args }
Path { type_anchor: None, mod_path: Interned::new(path), generic_args: generic_args.into() }
}
pub fn kind(&self) -> &PathKind {
@ -187,7 +187,7 @@ impl Path {
pub fn segments(&self) -> PathSegments<'_> {
PathSegments {
segments: self.mod_path.segments.as_slice(),
generic_args: self.generic_args.as_slice(),
generic_args: &self.generic_args,
}
}
@ -205,14 +205,14 @@ impl Path {
self.mod_path.kind.clone(),
self.mod_path.segments[..self.mod_path.segments.len() - 1].iter().cloned(),
)),
generic_args: self.generic_args[..self.generic_args.len() - 1].to_vec(),
generic_args: self.generic_args[..self.generic_args.len() - 1].to_vec().into(),
};
Some(res)
}
pub fn is_self_type(&self) -> bool {
self.type_anchor.is_none()
&& self.generic_args == [None]
&& *self.generic_args == [None]
&& self.mod_path.as_ident() == Some(&name!(Self))
}
}
@ -286,7 +286,7 @@ impl From<Name> for Path {
Path {
type_anchor: None,
mod_path: Interned::new(ModPath::from_segments(PathKind::Plain, iter::once(name))),
generic_args: vec![None],
generic_args: Box::new([None]),
}
}
}

17
crates/hir_def/src/path/lower.rs
View File

@ -70,18 +70,13 @@ pub(super) fn lower_path(mut path: ast::Path, ctx: &LowerCtx) -> Option<Path> {
}
// <T as Trait<A>>::Foo desugars to Trait<Self=T, A>::Foo
Some(trait_ref) => {
let path = Path::from_src(trait_ref.path()?, ctx)?;
let mod_path = (*path.mod_path).clone();
let num_segments = path.mod_path.segments.len();
let Path { mod_path, generic_args: path_generic_args, .. } =
Path::from_src(trait_ref.path()?, ctx)?;
let num_segments = mod_path.segments.len();
kind = mod_path.kind;
let mut prefix_segments = mod_path.segments;
prefix_segments.reverse();
segments.extend(prefix_segments);
let mut prefix_args = path.generic_args;
prefix_args.reverse();
generic_args.extend(prefix_args);
segments.extend(mod_path.segments.iter().cloned().rev());
generic_args.extend(path_generic_args.iter().cloned().rev());
// Insert the type reference (T in the above example) as Self parameter for the trait
let last_segment =
@ -139,7 +134,7 @@ pub(super) fn lower_path(mut path: ast::Path, ctx: &LowerCtx) -> Option<Path> {
}
let mod_path = Interned::new(ModPath::from_segments(kind, segments));
return Some(Path { type_anchor, mod_path, generic_args });
return Some(Path { type_anchor, mod_path, generic_args: generic_args.into() });
fn qualifier(path: &ast::Path) -> Option<ast::Path> {
if let Some(q) = path.qualifier() {

10
crates/hir_ty/src/diagnostics/expr.rs
View File

@ -202,19 +202,16 @@ impl ExprValidator {
}
let is_method_call = matches!(expr, Expr::MethodCall { .. });
let (sig, args) = match expr {
let (sig, mut arg_count) = match expr {
Expr::Call { callee, args } => {
let callee = &self.infer.type_of_expr[*callee];
let sig = match callee.callable_sig(db) {
Some(sig) => sig,
None => return,
};
(sig, args.clone())
(sig, args.len())
}
Expr::MethodCall { receiver, args, .. } => {
let mut args = args.clone();
args.insert(0, *receiver);
let receiver = &self.infer.type_of_expr[*receiver];
if receiver.strip_references().is_unknown() {
// if the receiver is of unknown type, it's very likely we
@ -229,7 +226,7 @@ impl ExprValidator {
};
let sig = db.callable_item_signature(callee.into()).substitute(&Interner, &subst);
(sig, args)
(sig, args.len() + 1)
}
_ => return,
};
@ -241,7 +238,6 @@ impl ExprValidator {
let params = sig.params();
let mut param_count = params.len();
let mut arg_count = args.len();
if arg_count != param_count {
if is_method_call {

2
crates/hir_ty/src/infer/expr.rs
View File

@ -375,7 +375,7 @@ impl<'a> InferenceContext<'a> {
let matchee_diverges = self.diverges;
let mut all_arms_diverge = Diverges::Always;
for arm in arms {
for arm in arms.iter() {
self.diverges = Diverges::Maybe;
let _pat_ty = self.infer_pat(arm.pat, &input_ty, BindingMode::default());
match arm.guard {

8
crates/hir_ty/src/infer/pat.rs
View File

@ -226,8 +226,8 @@ impl<'a> InferenceContext<'a> {
_ => self.err_ty(),
};
for pat_id in prefix.iter().chain(suffix) {
self.infer_pat(*pat_id, &elem_ty, default_bm);
for &pat_id in prefix.iter().chain(suffix.iter()) {
self.infer_pat(pat_id, &elem_ty, default_bm);
}
let pat_ty = match expected.kind(&Interner) {
@ -235,8 +235,8 @@ impl<'a> InferenceContext<'a> {
_ => TyKind::Slice(elem_ty),
}
.intern(&Interner);
if let Some(slice_pat_id) = slice {
self.infer_pat(*slice_pat_id, &pat_ty, default_bm);
if let &Some(slice_pat_id) = slice {
self.infer_pat(slice_pat_id, &pat_ty, default_bm);
}
pat_ty