Struct rustc_middle::ty::RvalueScopes

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

Expand description

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

Fields

map: FxHashMap<ItemLocalId, Option<Scope>>

Implementations

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impl RvalueScopes

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pub fn new() -> Self

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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.

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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

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impl Clone for RvalueScopes

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fn clone(&self) -> RvalueScopes

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for RvalueScopes

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

Formats the value using the given formatter. Read more

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fn default() -> RvalueScopes

Returns the “default value” for a type. Read more

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impl<'tcx, E: TyEncoder>> Encodable<E> for RvalueScopes

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fn encode(&self, encoder: &mut E)

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

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fn hash_stable(
 &self,
 hcx: &mut StableHashingContext<'ctx>,
 __hasher: &mut StableHasher
)

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impl PartialEq<RvalueScopes> for RvalueScopes

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

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

1.0.0 · source

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. Read more

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impl StructuralEq for RvalueScopes

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impl StructuralPartialEq for RvalueScopes

Auto Trait Implementations

impl RefUnwindSafe for RvalueScopes

impl UnwindSafe for RvalueScopes

Blanket Implementations

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impl<T> Any for Twhere
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<Ctxt, T> DepNodeParams<Ctxt> for Twhere
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

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default fn fingerprint_style() -> FingerprintStyle

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default fn to_fingerprint(&self, tcx: Ctxt) -> Fingerprint

This method turns the parameters of a DepNodeConstructor into an opaque Fingerprint to be used in DepNode. Not all DepNodeParams support being turned into a Fingerprint (they don’t need to if the corresponding DepNode is anonymous). Read more

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default fn to_debug_str(&self, Ctxt) -> String

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default fn recover(Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> Option<T>

This method tries to recover the query key from the given DepNode, something which is needed when forcing DepNodes during red-green evaluation. The query system will only call this method if fingerprint_style() is not FingerprintStyle::Opaque. It is always valid to return None here, in which case incremental compilation will treat the query as having changed instead of forcing it. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, R> InternIteratorElement<T, R> for T

type Output = R

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fn intern_with<I, F>(iter: I, f: F) -> <T as InternIteratorElement<T, R>>::Outputwhere
I: Iterator<Item = T>,
F: FnOnce(&[T]) -> R,

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impl<T, U> Into for Twhere
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> MaybeResult<T> for T

type Error = !

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fn from(Result<T, <T as MaybeResult<T>>::Error>) -> T

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fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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impl<T> ToOwned for Twhere
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for Twhere
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<CTX, T> Value<CTX> for Twhere
CTX: DepContext,

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default fn from_cycle_error(tcx: CTX) -> T

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impl<'a, T> Captures<'a> for Twhere
T: ?Sized,

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

Struct rustc_middle::ty::RvalueScopes

Fields

Implementations

impl RvalueScopes

pub fn new() -> Self

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

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

Trait Implementations

impl Clone for RvalueScopes

fn clone(&self) -> RvalueScopes

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

impl Debug for RvalueScopes

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

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

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

impl Default for RvalueScopes

fn default() -> RvalueScopes

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

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

impl Eq for RvalueScopes

impl StructuralEq for RvalueScopes

impl StructuralPartialEq for RvalueScopes

Auto Trait Implementations

impl RefUnwindSafe for RvalueScopes

impl Send for RvalueScopes

impl Sync for RvalueScopes

impl Unpin for RvalueScopes

impl UnwindSafe for RvalueScopes

Blanket Implementations

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<Ctxt, T> DepNodeParams<Ctxt> for Twhere Ctxt: DepContext, T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

default fn fingerprint_style() -> FingerprintStyle

default fn to_fingerprint(&self, tcx: Ctxt) -> Fingerprint

default fn to_debug_str(&self, Ctxt) -> String

default fn recover(Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> Option<T>

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, R> InternIteratorElement<T, R> for T

type Output = R

fn intern_with<I, F>(iter: I, f: F) -> <T as InternIteratorElement<T, R>>::Outputwhere I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> MaybeResult<T> for T

type Error = !

fn from(Result<T, <T as MaybeResult<T>>::Error>) -> T

fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<CTX, T> Value<CTX> for Twhere CTX: DepContext,

default fn from_cycle_error(tcx: CTX) -> T

impl<'a, T> Captures<'a> for Twhere T: ?Sized,

Layout

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

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

fn decode(decoder: &mut D) -> Self

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<T> Any for Twhere
T: 'static + ?Sized,

impl<T> Borrow<T> for Twhere
T: ?Sized,

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

impl<Ctxt, T> DepNodeParams<Ctxt> for Twhere
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

fn intern_with<I, F>(iter: I, f: F) -> <T as InternIteratorElement<T, R>>::Outputwhere
I: Iterator<Item = T>,
F: FnOnce(&[T]) -> R,

impl<T, U> Into<U> for Twhere
U: From<T>,

impl<T> ToOwned for Twhere
T: Clone,

impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,

impl<CTX, T> Value<CTX> for Twhere
CTX: DepContext,

impl<'a, T> Captures<'a> for Twhere
T: ?Sized,