Struct rustc_middle::ty::RvalueScopes

pub struct RvalueScopes {
    map: ItemLocalMap<Option<Scope>>,
}

RvalueScopes is a mapping from sub-expressions to extended lifetime as determined by rules laid out in rustc_hir_analysis::check::rvalue_scopes.

Fields

map: ItemLocalMap<Option<Scope>>

Implementations

impl RvalueScopes

pub fn new() -> Self

pub fn temporary_scope( &self, region_scope_tree: &ScopeTree, expr_id: ItemLocalId ) -> Option<Scope>

Returns the scope when the temp created by expr_id will be cleaned up.

pub fn record_rvalue_scope(&mut self, var: ItemLocalId, lifetime: Option<Scope>)

Make an association between a sub-expression and an extended lifetime

Trait Implementations

impl Clone for RvalueScopes

fn clone(&self) -> RvalueScopes

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RvalueScopes

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

Formats the value using the given formatter.

impl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for RvalueScopes

fn decode(__decoder: &mut __D) -> Self

impl Default for RvalueScopes

fn default() -> RvalueScopes

Returns the “default value” for a type.

impl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for RvalueScopes

fn encode(&self, __encoder: &mut __E)

impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for RvalueScopes

fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher )

impl PartialEq<RvalueScopes> for RvalueScopes

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for RvalueScopes

impl StructuralEq for RvalueScopes

impl StructuralPartialEq for RvalueScopes

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