Skip to content

Commit

Permalink
Rollup merge of rust-lang#122780 - GuillaumeGomez:rename-hir-local, r…
Browse files Browse the repository at this point in the history
…=oli-obk

Rename `hir::Local` into `hir::LetStmt`

Follow-up of rust-lang#122776.

As discussed on [zulip](https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/Improve.20naming.20of.20.60ExprKind.3A.3ALet.60.3F).

I made this change into a separate PR because I'm less sure about this change as is. For example, we have `visit_local` and `LocalSource` items. Is it fine to keep these two as is (I supposed it is but I prefer to ask) or not? Having `Node::Local(LetStmt)` makes things more explicit but is it going too far?

r? `@oli-obk`
  • Loading branch information
workingjubilee authored Mar 23, 2024
2 parents be7fd03 + e0d3439 commit fb850c1
Show file tree
Hide file tree
Showing 82 changed files with 178 additions and 177 deletions.
4 changes: 2 additions & 2 deletions compiler/rustc_ast_lowering/src/block.rs
Original file line number Diff line number Diff line change
Expand Up @@ -81,7 +81,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
(self.arena.alloc_from_iter(stmts), expr)
}

fn lower_local(&mut self, l: &Local) -> &'hir hir::Local<'hir> {
fn lower_local(&mut self, l: &Local) -> &'hir hir::LetStmt<'hir> {
let ty = l
.ty
.as_ref()
Expand All @@ -97,7 +97,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
let span = self.lower_span(l.span);
let source = hir::LocalSource::Normal;
self.lower_attrs(hir_id, &l.attrs);
self.arena.alloc(hir::Local { hir_id, ty, pat, init, els, span, source })
self.arena.alloc(hir::LetStmt { hir_id, ty, pat, init, els, span, source })
}

fn lower_block_check_mode(&mut self, b: &BlockCheckMode) -> hir::BlockCheckMode {
Expand Down
4 changes: 2 additions & 2 deletions compiler/rustc_ast_lowering/src/index.rs
Original file line number Diff line number Diff line change
Expand Up @@ -302,8 +302,8 @@ impl<'a, 'hir> Visitor<'hir> for NodeCollector<'a, 'hir> {
});
}

fn visit_local(&mut self, l: &'hir Local<'hir>) {
self.insert(l.span, l.hir_id, Node::Local(l));
fn visit_local(&mut self, l: &'hir LetStmt<'hir>) {
self.insert(l.span, l.hir_id, Node::LetStmt(l));
self.with_parent(l.hir_id, |this| {
intravisit::walk_local(this, l);
})
Expand Down
2 changes: 1 addition & 1 deletion compiler/rustc_ast_lowering/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -2341,7 +2341,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
debug_assert!(!a.is_empty());
self.attrs.insert(hir_id.local_id, a);
}
let local = hir::Local {
let local = hir::LetStmt {
hir_id,
init,
pat,
Expand Down
6 changes: 3 additions & 3 deletions compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
Original file line number Diff line number Diff line change
Expand Up @@ -622,7 +622,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {

// FIXME: We make sure that this is a normal top-level binding,
// but we could suggest `todo!()` for all uninitalized bindings in the pattern pattern
if let hir::StmtKind::Let(hir::Local { span, ty, init: None, pat, .. }) =
if let hir::StmtKind::Let(hir::LetStmt { span, ty, init: None, pat, .. }) =
&ex.kind
&& let hir::PatKind::Binding(..) = pat.kind
&& span.contains(self.decl_span)
Expand Down Expand Up @@ -800,7 +800,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
for (_, node) in tcx.hir().parent_iter(expr.hir_id) {
let e = match node {
hir::Node::Expr(e) => e,
hir::Node::Local(hir::Local { els: Some(els), .. }) => {
hir::Node::LetStmt(hir::LetStmt { els: Some(els), .. }) => {
let mut finder = BreakFinder { found_breaks: vec![], found_continues: vec![] };
finder.visit_block(els);
if !finder.found_breaks.is_empty() {
Expand Down Expand Up @@ -2124,7 +2124,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
hir::intravisit::walk_expr(self, e);
}

fn visit_local(&mut self, local: &'hir hir::Local<'hir>) {
fn visit_local(&mut self, local: &'hir hir::LetStmt<'hir>) {
if let hir::Pat { kind: hir::PatKind::Binding(_, hir_id, _ident, _), .. } =
local.pat
&& let Some(init) = local.init
Expand Down
6 changes: 3 additions & 3 deletions compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
Original file line number Diff line number Diff line change
Expand Up @@ -558,7 +558,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
hir::intravisit::walk_stmt(self, stmt);
let expr = match stmt.kind {
hir::StmtKind::Semi(expr) | hir::StmtKind::Expr(expr) => expr,
hir::StmtKind::Let(hir::Local { init: Some(expr), .. }) => expr,
hir::StmtKind::Let(hir::LetStmt { init: Some(expr), .. }) => expr,
_ => {
return;
}
Expand Down Expand Up @@ -737,7 +737,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
&& let body = self.infcx.tcx.hir().body(body_id)
&& let Some(hir_id) = (BindingFinder { span: pat_span }).visit_body(body).break_value()
&& let node = self.infcx.tcx.hir_node(hir_id)
&& let hir::Node::Local(hir::Local {
&& let hir::Node::LetStmt(hir::LetStmt {
pat: hir::Pat { kind: hir::PatKind::Ref(_, _), .. },
..
})
Expand Down Expand Up @@ -1170,7 +1170,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
};

if let Some(hir_id) = hir_id
&& let hir::Node::Local(local) = self.infcx.tcx.hir_node(hir_id)
&& let hir::Node::LetStmt(local) = self.infcx.tcx.hir_node(hir_id)
{
let tables = self.infcx.tcx.typeck(def_id.as_local().unwrap());
if let Some(clone_trait) = self.infcx.tcx.lang_items().clone_trait()
Expand Down
16 changes: 8 additions & 8 deletions compiler/rustc_hir/src/hir.rs
Original file line number Diff line number Diff line change
Expand Up @@ -1220,7 +1220,7 @@ pub struct Stmt<'hir> {
#[derive(Debug, Clone, Copy, HashStable_Generic)]
pub enum StmtKind<'hir> {
/// A local (`let`) binding.
Let(&'hir Local<'hir>),
Let(&'hir LetStmt<'hir>),

/// An item binding.
Item(ItemId),
Expand All @@ -1234,7 +1234,7 @@ pub enum StmtKind<'hir> {

/// Represents a `let` statement (i.e., `let <pat>:<ty> = <init>;`).
#[derive(Debug, Clone, Copy, HashStable_Generic)]
pub struct Local<'hir> {
pub struct LetStmt<'hir> {
pub pat: &'hir Pat<'hir>,
/// Type annotation, if any (otherwise the type will be inferred).
pub ty: Option<&'hir Ty<'hir>>,
Expand Down Expand Up @@ -1264,7 +1264,7 @@ pub struct Arm<'hir> {
pub body: &'hir Expr<'hir>,
}

/// Represents a `let <pat>[: <ty>] = <expr>` expression (not a [`Local`]), occurring in an `if-let`
/// Represents a `let <pat>[: <ty>] = <expr>` expression (not a [`LetStmt`]), occurring in an `if-let`
/// or `let-else`, evaluating to a boolean. Typically the pattern is refutable.
///
/// In an `if let`, imagine it as `if (let <pat> = <expr>) { ... }`; in a let-else, it is part of
Expand Down Expand Up @@ -1861,7 +1861,7 @@ pub enum ExprKind<'hir> {
DropTemps(&'hir Expr<'hir>),
/// A `let $pat = $expr` expression.
///
/// These are not `Local` and only occur as expressions.
/// These are not [`LetStmt`] and only occur as expressions.
/// The `let Some(x) = foo()` in `if let Some(x) = foo()` is an example of `Let(..)`.
Let(&'hir LetExpr<'hir>),
/// An `if` block, with an optional else block.
Expand Down Expand Up @@ -3529,7 +3529,7 @@ pub enum Node<'hir> {
PatField(&'hir PatField<'hir>),
Arm(&'hir Arm<'hir>),
Block(&'hir Block<'hir>),
Local(&'hir Local<'hir>),
LetStmt(&'hir LetStmt<'hir>),
/// `Ctor` refers to the constructor of an enum variant or struct. Only tuple or unit variants
/// with synthesized constructors.
Ctor(&'hir VariantData<'hir>),
Expand Down Expand Up @@ -3585,7 +3585,7 @@ impl<'hir> Node<'hir> {
| Node::Ctor(..)
| Node::Pat(..)
| Node::Arm(..)
| Node::Local(..)
| Node::LetStmt(..)
| Node::Crate(..)
| Node::Ty(..)
| Node::TraitRef(..)
Expand Down Expand Up @@ -3757,7 +3757,7 @@ impl<'hir> Node<'hir> {
expect_pat_field, &'hir PatField<'hir>, Node::PatField(n), n;
expect_arm, &'hir Arm<'hir>, Node::Arm(n), n;
expect_block, &'hir Block<'hir>, Node::Block(n), n;
expect_local, &'hir Local<'hir>, Node::Local(n), n;
expect_let_stmt, &'hir LetStmt<'hir>, Node::LetStmt(n), n;
expect_ctor, &'hir VariantData<'hir>, Node::Ctor(n), n;
expect_lifetime, &'hir Lifetime, Node::Lifetime(n), n;
expect_generic_param, &'hir GenericParam<'hir>, Node::GenericParam(n), n;
Expand Down Expand Up @@ -3787,7 +3787,7 @@ mod size_asserts {
static_assert_size!(ImplItemKind<'_>, 40);
static_assert_size!(Item<'_>, 88);
static_assert_size!(ItemKind<'_>, 56);
static_assert_size!(Local<'_>, 64);
static_assert_size!(LetStmt<'_>, 64);
static_assert_size!(Param<'_>, 32);
static_assert_size!(Pat<'_>, 72);
static_assert_size!(Path<'_>, 40);
Expand Down
4 changes: 2 additions & 2 deletions compiler/rustc_hir/src/intravisit.rs
Original file line number Diff line number Diff line change
Expand Up @@ -320,7 +320,7 @@ pub trait Visitor<'v>: Sized {
fn visit_foreign_item(&mut self, i: &'v ForeignItem<'v>) -> Self::Result {
walk_foreign_item(self, i)
}
fn visit_local(&mut self, l: &'v Local<'v>) -> Self::Result {
fn visit_local(&mut self, l: &'v LetStmt<'v>) -> Self::Result {
walk_local(self, l)
}
fn visit_block(&mut self, b: &'v Block<'v>) -> Self::Result {
Expand Down Expand Up @@ -606,7 +606,7 @@ pub fn walk_foreign_item<'v, V: Visitor<'v>>(
V::Result::output()
}

pub fn walk_local<'v, V: Visitor<'v>>(visitor: &mut V, local: &'v Local<'v>) -> V::Result {
pub fn walk_local<'v, V: Visitor<'v>>(visitor: &mut V, local: &'v LetStmt<'v>) -> V::Result {
// Intentionally visiting the expr first - the initialization expr
// dominates the local's definition.
visit_opt!(visitor, visit_expr, local.init);
Expand Down
6 changes: 3 additions & 3 deletions compiler/rustc_hir_analysis/src/check/region.rs
Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ use rustc_data_structures::fx::FxHashSet;
use rustc_hir as hir;
use rustc_hir::def_id::DefId;
use rustc_hir::intravisit::{self, Visitor};
use rustc_hir::{Arm, Block, Expr, Local, Pat, PatKind, Stmt};
use rustc_hir::{Arm, Block, Expr, LetStmt, Pat, PatKind, Stmt};
use rustc_index::Idx;
use rustc_middle::middle::region::*;
use rustc_middle::ty::TyCtxt;
Expand Down Expand Up @@ -123,7 +123,7 @@ fn resolve_block<'tcx>(visitor: &mut RegionResolutionVisitor<'tcx>, blk: &'tcx h

for (i, statement) in blk.stmts.iter().enumerate() {
match statement.kind {
hir::StmtKind::Let(hir::Local { els: Some(els), .. }) => {
hir::StmtKind::Let(LetStmt { els: Some(els), .. }) => {
// Let-else has a special lexical structure for variables.
// First we take a checkpoint of the current scope context here.
let mut prev_cx = visitor.cx;
Expand Down Expand Up @@ -855,7 +855,7 @@ impl<'tcx> Visitor<'tcx> for RegionResolutionVisitor<'tcx> {
fn visit_expr(&mut self, ex: &'tcx Expr<'tcx>) {
resolve_expr(self, ex);
}
fn visit_local(&mut self, l: &'tcx Local<'tcx>) {
fn visit_local(&mut self, l: &'tcx LetStmt<'tcx>) {
resolve_local(self, Some(l.pat), l.init)
}
}
Expand Down
4 changes: 2 additions & 2 deletions compiler/rustc_hir_pretty/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -113,7 +113,7 @@ impl<'a> State<'a> {
// `hir_map` to reconstruct their full structure for pretty
// printing.
Node::Ctor(..) => panic!("cannot print isolated Ctor"),
Node::Local(a) => self.print_local_decl(a),
Node::LetStmt(a) => self.print_local_decl(a),
Node::Crate(..) => panic!("cannot print Crate"),
Node::WhereBoundPredicate(pred) => {
self.print_formal_generic_params(pred.bound_generic_params);
Expand Down Expand Up @@ -1544,7 +1544,7 @@ impl<'a> State<'a> {
self.end()
}

fn print_local_decl(&mut self, loc: &hir::Local<'_>) {
fn print_local_decl(&mut self, loc: &hir::LetStmt<'_>) {
self.print_pat(loc.pat);
if let Some(ty) = loc.ty {
self.word_space(":");
Expand Down
2 changes: 1 addition & 1 deletion compiler/rustc_hir_typeck/src/_match.rs
Original file line number Diff line number Diff line change
Expand Up @@ -408,7 +408,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
}
}
}
if let hir::Node::Local(hir::Local { ty: Some(_), pat, .. }) = node {
if let hir::Node::LetStmt(hir::LetStmt { ty: Some(_), pat, .. }) = node {
return Some((pat.span, "expected because of this assignment".to_string()));
}
None
Expand Down
10 changes: 5 additions & 5 deletions compiler/rustc_hir_typeck/src/demand.rs
Original file line number Diff line number Diff line change
Expand Up @@ -299,8 +299,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
return false;
};
let (init_ty_hir_id, init) = match self.tcx.parent_hir_node(pat.hir_id) {
hir::Node::Local(hir::Local { ty: Some(ty), init, .. }) => (ty.hir_id, *init),
hir::Node::Local(hir::Local { init: Some(init), .. }) => (init.hir_id, Some(*init)),
hir::Node::LetStmt(hir::LetStmt { ty: Some(ty), init, .. }) => (ty.hir_id, *init),
hir::Node::LetStmt(hir::LetStmt { init: Some(init), .. }) => (init.hir_id, Some(*init)),
_ => return false,
};
let Some(init_ty) = self.node_ty_opt(init_ty_hir_id) else {
Expand Down Expand Up @@ -678,7 +678,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
error: Option<TypeError<'tcx>>,
) {
match (self.tcx.parent_hir_node(expr.hir_id), error) {
(hir::Node::Local(hir::Local { ty: Some(ty), init: Some(init), .. }), _)
(hir::Node::LetStmt(hir::LetStmt { ty: Some(ty), init: Some(init), .. }), _)
if init.hir_id == expr.hir_id =>
{
// Point at `let` assignment type.
Expand Down Expand Up @@ -724,11 +724,11 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
primary_span = pat.span;
secondary_span = pat.span;
match self.tcx.parent_hir_node(pat.hir_id) {
hir::Node::Local(hir::Local { ty: Some(ty), .. }) => {
hir::Node::LetStmt(hir::LetStmt { ty: Some(ty), .. }) => {
primary_span = ty.span;
post_message = " type";
}
hir::Node::Local(hir::Local { init: Some(init), .. }) => {
hir::Node::LetStmt(hir::LetStmt { init: Some(init), .. }) => {
primary_span = init.span;
post_message = " value";
}
Expand Down
2 changes: 1 addition & 1 deletion compiler/rustc_hir_typeck/src/expr.rs
Original file line number Diff line number Diff line change
Expand Up @@ -1451,7 +1451,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
});
let Some((
_,
hir::Node::Local(hir::Local { ty: Some(ty), .. })
hir::Node::LetStmt(hir::LetStmt { ty: Some(ty), .. })
| hir::Node::Item(hir::Item { kind: hir::ItemKind::Const(ty, _, _), .. }),
)) = parent_node
else {
Expand Down
2 changes: 1 addition & 1 deletion compiler/rustc_hir_typeck/src/expr_use_visitor.rs
Original file line number Diff line number Diff line change
Expand Up @@ -371,7 +371,7 @@ impl<'a, 'tcx> ExprUseVisitor<'a, 'tcx> {

fn walk_stmt(&mut self, stmt: &hir::Stmt<'_>) {
match stmt.kind {
hir::StmtKind::Let(hir::Local { pat, init: Some(expr), els, .. }) => {
hir::StmtKind::Let(hir::LetStmt { pat, init: Some(expr), els, .. }) => {
self.walk_local(expr, pat, *els, |_| {})
}

Expand Down
4 changes: 2 additions & 2 deletions compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs
Original file line number Diff line number Diff line change
Expand Up @@ -1601,7 +1601,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
}

/// Type check a `let` statement.
pub fn check_decl_local(&self, local: &'tcx hir::Local<'tcx>) {
pub fn check_decl_local(&self, local: &'tcx hir::LetStmt<'tcx>) {
self.check_decl(local.into());
if local.pat.is_never_pattern() {
self.diverges.set(Diverges::Always {
Expand Down Expand Up @@ -1789,7 +1789,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
[
hir::Stmt {
kind:
hir::StmtKind::Let(hir::Local {
hir::StmtKind::Let(hir::LetStmt {
source:
hir::LocalSource::AssignDesugar(_),
..
Expand Down
12 changes: 6 additions & 6 deletions compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs
Original file line number Diff line number Diff line change
Expand Up @@ -317,7 +317,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
);
expr_id = parent_id;
}
Node::Local(local) => {
Node::LetStmt(local) => {
if let Some(mut ty) = local.ty {
while let Some(index) = tuple_indexes.pop() {
match ty.kind {
Expand Down Expand Up @@ -1348,7 +1348,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
// ++++++++++
// since the user probably just misunderstood how `let else`
// and `&&` work together.
if let Some((_, hir::Node::Local(local))) = cond_parent
if let Some((_, hir::Node::LetStmt(local))) = cond_parent
&& let hir::PatKind::Path(qpath) | hir::PatKind::TupleStruct(qpath, _, _) =
&local.pat.kind
&& let hir::QPath::Resolved(None, path) = qpath
Expand Down Expand Up @@ -1748,7 +1748,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {

match self.tcx.parent_hir_node(*hir_id) {
// foo.clone()
hir::Node::Local(hir::Local { init: Some(init), .. }) => {
hir::Node::LetStmt(hir::LetStmt { init: Some(init), .. }) => {
self.note_type_is_not_clone_inner_expr(init)
}
// When `expr` is more complex like a tuple
Expand All @@ -1757,7 +1757,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
kind: hir::PatKind::Tuple(pats, ..),
..
}) => {
let hir::Node::Local(hir::Local { init: Some(init), .. }) =
let hir::Node::LetStmt(hir::LetStmt { init: Some(init), .. }) =
self.tcx.parent_hir_node(*pat_hir_id)
else {
return expr;
Expand Down Expand Up @@ -1791,7 +1791,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
&& let hir::Path { segments: [_], res: crate::Res::Local(binding), .. } =
call_expr_path
&& let hir::Node::Pat(hir::Pat { hir_id, .. }) = self.tcx.hir_node(*binding)
&& let hir::Node::Local(hir::Local { init: Some(init), .. }) =
&& let hir::Node::LetStmt(hir::LetStmt { init: Some(init), .. }) =
self.tcx.parent_hir_node(*hir_id)
&& let Expr {
kind: hir::ExprKind::Closure(hir::Closure { body: body_id, .. }),
Expand Down Expand Up @@ -3147,7 +3147,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
let hir::Node::Pat(pat) = self.tcx.hir_node(hir_id) else {
return;
};
let hir::Node::Local(hir::Local { ty: None, init: Some(init), .. }) =
let hir::Node::LetStmt(hir::LetStmt { ty: None, init: Some(init), .. }) =
self.tcx.parent_hir_node(pat.hir_id)
else {
return;
Expand Down
10 changes: 5 additions & 5 deletions compiler/rustc_hir_typeck/src/gather_locals.rs
Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@ impl<'a> DeclOrigin<'a> {
}
}

/// A declaration is an abstraction of [hir::Local] and [hir::LetExpr].
/// A declaration is an abstraction of [hir::LetStmt] and [hir::LetExpr].
///
/// It must have a hir_id, as this is how we connect gather_locals to the check functions.
pub(super) struct Declaration<'a> {
Expand All @@ -41,9 +41,9 @@ pub(super) struct Declaration<'a> {
pub origin: DeclOrigin<'a>,
}

impl<'a> From<&'a hir::Local<'a>> for Declaration<'a> {
fn from(local: &'a hir::Local<'a>) -> Self {
let hir::Local { hir_id, pat, ty, span, init, els, source: _ } = *local;
impl<'a> From<&'a hir::LetStmt<'a>> for Declaration<'a> {
fn from(local: &'a hir::LetStmt<'a>) -> Self {
let hir::LetStmt { hir_id, pat, ty, span, init, els, source: _ } = *local;
Declaration { hir_id, pat, ty, span, init, origin: DeclOrigin::LocalDecl { els } }
}
}
Expand Down Expand Up @@ -120,7 +120,7 @@ impl<'a, 'tcx> GatherLocalsVisitor<'a, 'tcx> {

impl<'a, 'tcx> Visitor<'tcx> for GatherLocalsVisitor<'a, 'tcx> {
// Add explicitly-declared locals.
fn visit_local(&mut self, local: &'tcx hir::Local<'tcx>) {
fn visit_local(&mut self, local: &'tcx hir::LetStmt<'tcx>) {
self.declare(local.into());
intravisit::walk_local(self, local)
}
Expand Down
Loading

0 comments on commit fb850c1

Please sign in to comment.