Struct rustc_lint::unused::UnusedParens
source · pub struct UnusedParens {
with_self_ty_parens: bool,
parens_in_cast_in_lt: Vec<NodeId>,
}
Fields§
§with_self_ty_parens: bool
§parens_in_cast_in_lt: Vec<NodeId>
1 as (i32) < 2
parses to ExprKind::Lt
1 as i32 < 2
parses to i32::<2[missing angle bracket]
Implementations§
source§impl UnusedParens
impl UnusedParens
source§impl UnusedParens
impl UnusedParens
fn check_unused_parens_pat( &self, cx: &EarlyContext<'_>, value: &Pat, avoid_or: bool, avoid_mut: bool, keep_space: (bool, bool) )
Trait Implementations§
source§impl EarlyLintPass for UnusedParens
impl EarlyLintPass for UnusedParens
fn check_expr(&mut self, cx: &EarlyContext<'_>, e: &Expr)
fn check_expr_post(&mut self, _cx: &EarlyContext<'_>, e: &Expr)
fn check_pat(&mut self, cx: &EarlyContext<'_>, p: &Pat)
fn check_stmt(&mut self, cx: &EarlyContext<'_>, s: &Stmt)
fn check_param(&mut self, cx: &EarlyContext<'_>, param: &Param)
fn check_arm(&mut self, cx: &EarlyContext<'_>, arm: &Arm)
fn check_ty(&mut self, cx: &EarlyContext<'_>, ty: &Ty)
fn check_item(&mut self, cx: &EarlyContext<'_>, item: &Item)
fn enter_where_predicate(&mut self, _: &EarlyContext<'_>, pred: &WherePredicate)
fn exit_where_predicate(&mut self, _: &EarlyContext<'_>, _: &WherePredicate)
fn check_ident(&mut self, _: &EarlyContext<'_>, _: Ident)
fn check_crate(&mut self, _: &EarlyContext<'_>, _: &Crate)
fn check_crate_post(&mut self, _: &EarlyContext<'_>, _: &Crate)
fn check_item_post(&mut self, _: &EarlyContext<'_>, _: &Item)
fn check_local(&mut self, _: &EarlyContext<'_>, _: &Local)
fn check_block(&mut self, _: &EarlyContext<'_>, _: &Block)
fn check_pat_post(&mut self, _: &EarlyContext<'_>, _: &Pat)
fn check_generic_arg(&mut self, _: &EarlyContext<'_>, _: &GenericArg)
fn check_generic_param(&mut self, _: &EarlyContext<'_>, _: &GenericParam)
fn check_generics(&mut self, _: &EarlyContext<'_>, _: &Generics)
fn check_poly_trait_ref(&mut self, _: &EarlyContext<'_>, _: &PolyTraitRef)
fn check_fn(&mut self, _: &EarlyContext<'_>, _: FnKind<'_>, _: Span, _: NodeId)
fn check_trait_item(&mut self, _: &EarlyContext<'_>, _: &AssocItem)
fn check_impl_item(&mut self, _: &EarlyContext<'_>, _: &AssocItem)
fn check_variant(&mut self, _: &EarlyContext<'_>, _: &Variant)
fn check_attribute(&mut self, _: &EarlyContext<'_>, _: &Attribute)
fn check_mac_def(&mut self, _: &EarlyContext<'_>, _: &MacroDef)
fn check_mac(&mut self, _: &EarlyContext<'_>, _: &MacCall)
fn enter_lint_attrs(&mut self, _: &EarlyContext<'_>, _: &[Attribute])
fn exit_lint_attrs(&mut self, _: &EarlyContext<'_>, _: &[Attribute])
source§impl UnusedDelimLint for UnusedParens
impl UnusedDelimLint for UnusedParens
const DELIM_STR: &'static str = "parentheses"
source§const LINT_EXPR_IN_PATTERN_MATCHING_CTX: bool = true
const LINT_EXPR_IN_PATTERN_MATCHING_CTX: bool = true
Due to
ref
pattern, there can be a difference between using
{ expr }
and expr
in pattern-matching contexts. This means
that we should only lint unused_parens
and not unused_braces
in this case. Read morefn lint(&self) -> &'static Lint
fn check_unused_delims_expr( &self, cx: &EarlyContext<'_>, value: &Expr, ctx: UnusedDelimsCtx, followed_by_block: bool, left_pos: Option<BytePos>, right_pos: Option<BytePos>, is_kw: bool )
fn is_expr_delims_necessary( inner: &Expr, followed_by_block: bool, followed_by_else: bool ) -> bool
fn emit_unused_delims_expr( &self, cx: &EarlyContext<'_>, value: &Expr, ctx: UnusedDelimsCtx, left_pos: Option<BytePos>, right_pos: Option<BytePos>, is_kw: bool )
fn emit_unused_delims( &self, cx: &EarlyContext<'_>, value_span: Span, spans: Option<(Span, Span)>, msg: &str, keep_space: (bool, bool), is_kw: bool )
fn check_expr(&mut self, cx: &EarlyContext<'_>, e: &Expr)
fn check_stmt(&mut self, cx: &EarlyContext<'_>, s: &Stmt)
fn check_item(&mut self, cx: &EarlyContext<'_>, item: &Item)
Auto Trait Implementations§
impl RefUnwindSafe for UnusedParens
impl Send for UnusedParens
impl Sync for UnusedParens
impl Unpin for UnusedParens
impl UnwindSafe for UnusedParens
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 32 bytes