Struct UnstableFeatures 

pub struct UnstableFeatures {

    all: FxHashSet<Symbol>,
    pub lang_items: bool,
    pub exhaustive_patterns: bool,
    pub generic_associated_type_extended: bool,
    pub arbitrary_self_types: bool,
    pub arbitrary_self_types_pointers: bool,
    pub supertrait_item_shadowing: bool,
    pub new_range: bool,
    pub never_type_fallback: bool,
    pub specialization: bool,
    pub min_specialization: bool,
    pub ref_pat_eat_one_layer_2024: bool,
    pub ref_pat_eat_one_layer_2024_structural: bool,
    pub deref_patterns: bool,
    pub mut_ref: bool,
    pub type_changing_struct_update: bool,
}

Fields

all: FxHashSet<Symbol>

lang_items: bool

exhaustive_patterns: bool

generic_associated_type_extended: bool

arbitrary_self_types: bool

arbitrary_self_types_pointers: bool

supertrait_item_shadowing: bool

new_range: bool

never_type_fallback: bool

specialization: bool

min_specialization: bool

ref_pat_eat_one_layer_2024: bool

ref_pat_eat_one_layer_2024_structural: bool

deref_patterns: bool

mut_ref: bool

type_changing_struct_update: bool

Implementations

impl UnstableFeatures

pub fn is_enabled(&self, feature: &Symbol) -> bool

pub fn iter(&self) -> impl Iterator<Item = Symbol>

pub(crate) fn shrink_to_fit(&mut self)

impl UnstableFeatures

pub fn query<'db>( db: &'db dyn SourceDatabase, krate: Crate, ) -> &'db UnstableFeatures

Query unstable features for a crate.

This is also available as DefMap::features(). Use that if you have a DefMap available. Otherwise, use this, to not draw a dependency to the def map.

impl UnstableFeatures

pub(crate) fn enable(&mut self, feature: Symbol)

Trait Implementations

impl Clone for UnstableFeatures

fn clone(&self) -> UnstableFeatures

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UnstableFeatures

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for UnstableFeatures

fn default() -> UnstableFeatures

Returns the “default value” for a type.

impl Eq for UnstableFeatures

impl PartialEq for UnstableFeatures

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.