Struct rustc_middle::mir::terminator::SwitchTargets
source · [−]Fields
values: SmallVec<[u128; 1]>
Possible values. The locations to branch to in each case
are found in the corresponding indices from the targets
vector.
targets: SmallVec<[BasicBlock; 2]>
Possible branch sites. The last element of this vector is used for the otherwise branch, so targets.len() == values.len() + 1 should hold.
Implementations
sourceimpl SwitchTargets
impl SwitchTargets
sourcepub fn new(
targets: impl Iterator<Item = (u128, BasicBlock)>,
otherwise: BasicBlock
) -> Self
pub fn new(
targets: impl Iterator<Item = (u128, BasicBlock)>,
otherwise: BasicBlock
) -> Self
Creates switch targets from an iterator of values and target blocks.
The iterator may be empty, in which case the SwitchInt
instruction is equivalent to
goto otherwise;
.
sourcepub fn static_if(value: u128, then: BasicBlock, else_: BasicBlock) -> Self
pub fn static_if(value: u128, then: BasicBlock, else_: BasicBlock) -> Self
Builds a switch targets definition that jumps to then
if the tested value equals value
,
and to else_
if not.
sourcepub fn otherwise(&self) -> BasicBlock
pub fn otherwise(&self) -> BasicBlock
Returns the fallback target that is jumped to when none of the values match the operand.
sourcepub fn iter(&self) -> SwitchTargetsIter<'_>ⓘNotable traits for SwitchTargetsIter<'a>impl<'a> Iterator for SwitchTargetsIter<'a> type Item = (u128, BasicBlock);
pub fn iter(&self) -> SwitchTargetsIter<'_>ⓘNotable traits for SwitchTargetsIter<'a>impl<'a> Iterator for SwitchTargetsIter<'a> type Item = (u128, BasicBlock);
Returns an iterator over the switch targets.
The iterator will yield tuples containing the value and corresponding target to jump to, not
including the otherwise
fallback target.
Note that this may yield 0 elements. Only the otherwise
branch is mandatory.
sourcepub fn all_targets(&self) -> &[BasicBlock]
pub fn all_targets(&self) -> &[BasicBlock]
Returns a slice with all possible jump targets (including the fallback target).
pub fn all_targets_mut(&mut self) -> &mut [BasicBlock]
sourcepub fn target_for_value(&self, value: u128) -> BasicBlock
pub fn target_for_value(&self, value: u128) -> BasicBlock
Finds the BasicBlock
to which this SwitchInt
will branch given the
specific value. This cannot fail, as it’ll return the otherwise
branch if there’s not a specific match for the value.
Trait Implementations
sourceimpl Clone for SwitchTargets
impl Clone for SwitchTargets
sourcefn clone(&self) -> SwitchTargets
fn clone(&self) -> SwitchTargets
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for SwitchTargets
impl Debug for SwitchTargets
sourceimpl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for SwitchTargets
impl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for SwitchTargets
sourceimpl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for SwitchTargets
impl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for SwitchTargets
sourceimpl Hash for SwitchTargets
impl Hash for SwitchTargets
sourceimpl<'__ctx> HashStable<StableHashingContext<'__ctx>> for SwitchTargets
impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for SwitchTargets
fn hash_stable(
&self,
__hcx: &mut StableHashingContext<'__ctx>,
__hasher: &mut StableHasher
)
sourceimpl PartialEq<SwitchTargets> for SwitchTargets
impl PartialEq<SwitchTargets> for SwitchTargets
sourcefn eq(&self, other: &SwitchTargets) -> bool
fn eq(&self, other: &SwitchTargets) -> bool
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
sourcefn ne(&self, other: &SwitchTargets) -> bool
fn ne(&self, other: &SwitchTargets) -> bool
This method tests for !=
.
sourceimpl PartialOrd<SwitchTargets> for SwitchTargets
impl PartialOrd<SwitchTargets> for SwitchTargets
sourcefn partial_cmp(&self, other: &SwitchTargets) -> Option<Ordering>
fn partial_cmp(&self, other: &SwitchTargets) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
1.0.0 · sourcefn lt(&self, other: &Rhs) -> bool
fn lt(&self, other: &Rhs) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl StructuralPartialEq for SwitchTargets
Auto Trait Implementations
impl RefUnwindSafe for SwitchTargets
impl Send for SwitchTargets
impl Sync for SwitchTargets
impl Unpin for SwitchTargets
impl UnwindSafe for SwitchTargets
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<Ctxt, T> DepNodeParams<Ctxt> for T where
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
impl<Ctxt, T> DepNodeParams<Ctxt> for T where
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
default fn fingerprint_style() -> FingerprintStyle
sourcedefault fn to_fingerprint(&self, tcx: Ctxt) -> Fingerprint
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
default fn to_debug_str(&self, Ctxt) -> String
sourcedefault fn recover(Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> Option<T>
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 DepNode
s 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
sourceimpl<T, R> InternIteratorElement<T, R> for 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>>::Output where
I: Iterator<Item = T>,
F: FnOnce(&[T]) -> R,
sourceimpl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
impl<'a, T> Captures<'a> for T where
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: 48 bytes