Struct rustc_lint::unused::UnusedParens

pub struct UnusedParens;

Implementations

impl UnusedParens

pub fn get_lints() -> LintArray

impl UnusedParens

fn check_unused_parens_pat(
    &self,
    cx: &EarlyContext<'_>,
    value: &Pat,
    avoid_or: bool,
    avoid_mut: bool
)

Trait Implementations

impl Clone for UnusedParens

fn clone(&self) -> UnusedParens

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl EarlyLintPass for UnusedParens

fn check_expr(&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 check_ident(&mut self, _: &EarlyContext<'_>, _: Ident)

fn check_crate(&mut self, _: &EarlyContext<'_>, _: &Crate)

fn check_crate_post(&mut self, _: &EarlyContext<'_>, _: &Crate)

fn check_foreign_item(&mut self, _: &EarlyContext<'_>, _: &ForeignItem)

fn check_foreign_item_post(&mut self, _: &EarlyContext<'_>, _: &ForeignItem)

fn check_item_post(&mut self, _: &EarlyContext<'_>, _: &Item)

fn check_local(&mut self, _: &EarlyContext<'_>, _: &Local)

fn check_block(&mut self, _: &EarlyContext<'_>, _: &Block)

fn check_block_post(&mut self, _: &EarlyContext<'_>, _: &Block)

fn check_anon_const(&mut self, _: &EarlyContext<'_>, _: &AnonConst)

fn check_pat_post(&mut self, _: &EarlyContext<'_>, _: &Pat)

fn check_expr_post(&mut self, _: &EarlyContext<'_>, _: &Expr)

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_where_predicate(&mut self, _: &EarlyContext<'_>, _: &WherePredicate)

fn check_poly_trait_ref(
    &mut self,
    _: &EarlyContext<'_>,
    _: &PolyTraitRef,
    _: &TraitBoundModifier
)

fn check_fn(&mut self, _: &EarlyContext<'_>, _: FnKind<'_>, _: Span, _: NodeId)

fn check_fn_post(
    &mut self,
    _: &EarlyContext<'_>,
    _: FnKind<'_>,
    _: Span,
    _: NodeId
)

fn check_trait_item(&mut self, _: &EarlyContext<'_>, _: &AssocItem)

fn check_trait_item_post(&mut self, _: &EarlyContext<'_>, _: &AssocItem)

fn check_impl_item(&mut self, _: &EarlyContext<'_>, _: &AssocItem)

fn check_impl_item_post(&mut self, _: &EarlyContext<'_>, _: &AssocItem)

fn check_struct_def(&mut self, _: &EarlyContext<'_>, _: &VariantData)

fn check_struct_def_post(&mut self, _: &EarlyContext<'_>, _: &VariantData)

fn check_field_def(&mut self, _: &EarlyContext<'_>, _: &FieldDef)

fn check_variant(&mut self, _: &EarlyContext<'_>, _: &Variant)

fn check_variant_post(&mut self, _: &EarlyContext<'_>, _: &Variant)

fn check_lifetime(&mut self, _: &EarlyContext<'_>, _: &Lifetime)

fn check_path(&mut self, _: &EarlyContext<'_>, _: &Path, _: NodeId)

fn check_attribute(&mut self, _: &EarlyContext<'_>, _: &Attribute)

fn check_mac_def(&mut self, _: &EarlyContext<'_>, _: &MacroDef, _: NodeId)

fn check_mac(&mut self, _: &EarlyContext<'_>, _: &MacCall)

fn enter_lint_attrs(&mut self, _: &EarlyContext<'_>, _: &[Attribute])

fn exit_lint_attrs(&mut self, _: &EarlyContext<'_>, _: &[Attribute])

impl LintPass for UnusedParens

fn name(&self) -> &'static str

impl UnusedDelimLint for UnusedParens

const DELIM_STR: &'static str

const LINT_EXPR_IN_PATTERN_MATCHING_CTX: bool

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.

fn 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>
)

fn is_expr_delims_necessary(inner: &Expr, followed_by_block: bool) -> bool

fn emit_unused_delims_expr(
    &self,
    cx: &EarlyContext<'_>,
    value: &Expr,
    ctx: UnusedDelimsCtx,
    left_pos: Option<BytePos>,
    right_pos: Option<BytePos>
)

fn emit_unused_delims(
    &self,
    cx: &EarlyContext<'_>,
    span: Span,
    pattern: &str,
    msg: &str,
    keep_space: (bool, 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)

impl Copy for UnusedParens

Layout

Note: Most layout information is completely unstable and may be different between compiler versions and platforms. 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: 0 bytes