bjoernager/rust
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Exhaustively handle expressions in patterns

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This commit is contained in:
Oli Scherer 2024-12-11 16:50:45 +00:00
parent 5df69191cb
commit c9365dd09f
36 changed files with 447 additions and 197 deletions
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18
compiler/rustc_hir/src/intravisit.rs
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@ -342,6 +342,9 @@ pub trait Visitor<'v>: Sized {
fn visit_pat_field(&mut self, f: &'v PatField<'v>) -> Self::Result {
walk_pat_field(self, f)
}
fn visit_pat_expr(&mut self, expr: &'v PatExpr<'v>) -> Self::Result {
walk_pat_expr(self, expr)
}
fn visit_anon_const(&mut self, c: &'v AnonConst) -> Self::Result {
walk_anon_const(self, c)
}
@ -685,10 +688,10 @@ pub fn walk_pat<'v, V: Visitor<'v>>(visitor: &mut V, pattern: &'v Pat<'v>) -> V:
try_visit!(visitor.visit_ident(ident));
visit_opt!(visitor, visit_pat, optional_subpattern);
}
PatKind::Lit(ref expression) => try_visit!(visitor.visit_expr(expression)),
PatKind::Lit(ref expression) => try_visit!(visitor.visit_pat_expr(expression)),
PatKind::Range(ref lower_bound, ref upper_bound, _) => {
visit_opt!(visitor, visit_expr, lower_bound);
visit_opt!(visitor, visit_expr, upper_bound);
visit_opt!(visitor, visit_pat_expr, lower_bound);
visit_opt!(visitor, visit_pat_expr, upper_bound);
}
PatKind::Never | PatKind::Wild | PatKind::Err(_) => (),
PatKind::Slice(prepatterns, ref slice_pattern, postpatterns) => {
@ -710,6 +713,15 @@ pub fn walk_pat_field<'v, V: Visitor<'v>>(visitor: &mut V, field: &'v PatField<'
visitor.visit_pat(field.pat)
}
pub fn walk_pat_expr<'v, V: Visitor<'v>>(visitor: &mut V, expr: &'v PatExpr<'v>) -> V::Result {
try_visit!(visitor.visit_id(expr.hir_id));
match &expr.kind {
PatExprKind::Lit { .. } => V::Result::output(),
PatExprKind::ConstBlock(c) => visitor.visit_inline_const(c),
PatExprKind::Path(qpath) => visitor.visit_qpath(qpath, expr.hir_id, expr.span),
}
}
pub fn walk_anon_const<'v, V: Visitor<'v>>(visitor: &mut V, constant: &'v AnonConst) -> V::Result {
try_visit!(visitor.visit_id(constant.hir_id));
visitor.visit_nested_body(constant.body)