Struct rustc_middle::mir::SwitchTargets
source · pub struct SwitchTargets {
pub(super) values: SmallVec<[u128; 1]>,
pub(super) targets: SmallVec<[BasicBlock; 2]>,
}
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§
source§impl 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<'_> ⓘ
pub fn iter(&self) -> SwitchTargetsIter<'_> ⓘ
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§
source§impl Clone for SwitchTargets
impl Clone for SwitchTargets
source§fn clone(&self) -> SwitchTargets
fn clone(&self) -> SwitchTargets
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for SwitchTargets
impl Debug for SwitchTargets
source§impl Hash for SwitchTargets
impl Hash for SwitchTargets
source§impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for SwitchTargets
impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for SwitchTargets
fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher )
source§impl PartialEq<SwitchTargets> for SwitchTargets
impl PartialEq<SwitchTargets> for SwitchTargets
source§fn eq(&self, other: &SwitchTargets) -> bool
fn eq(&self, other: &SwitchTargets) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for SwitchTargets
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for SwitchTargets
source§fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
self,
_: &mut F
) -> Result<Self, F::Error>
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>( self, _: &mut F ) -> Result<Self, F::Error>
source§impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for SwitchTargets
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for SwitchTargets
source§fn visit_with<F: TypeVisitor<TyCtxt<'tcx>>>(
&self,
_: &mut F
) -> ControlFlow<F::BreakTy>
fn visit_with<F: TypeVisitor<TyCtxt<'tcx>>>( &self, _: &mut F ) -> ControlFlow<F::BreakTy>
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§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
source§impl<Tcx, T> DepNodeParams<Tcx> for Twhere
Tcx: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
impl<Tcx, T> DepNodeParams<Tcx> for Twhere Tcx: DepContext, T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
default fn fingerprint_style() -> FingerprintStyle
source§default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
default fn to_debug_str(&self, _: Tcx) -> String
source§default fn recover(_: Tcx, _: &DepNode) -> Option<T>
default fn recover(_: Tcx, _: &DepNode) -> Option<T>
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
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impl<P> IntoQueryParam<P> for P
fn into_query_param(self) -> P
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source§impl<'tcx, T> TypeVisitableExt<'tcx> for Twhere
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source§fn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool
fn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool
true
if self
has any late-bound regions that are either
bound by binder
or bound by some binder outside of binder
.
If binder
is ty::INNERMOST
, this indicates whether
there are any late-bound regions that appear free.source§fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool
fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool
true
if this type has any regions that escape binder
(and
hence are not bound by it).source§fn has_escaping_bound_vars(&self) -> bool
fn has_escaping_bound_vars(&self) -> bool
true
if this type has regions that are not a part of the type.
For example, for<'a> fn(&'a i32)
return false
, while fn(&'a i32)
would return true
. The latter can occur when traversing through the
former. Read morefn has_type_flags(&self, flags: TypeFlags) -> bool
fn has_projections(&self) -> bool
fn has_inherent_projections(&self) -> bool
fn has_opaque_types(&self) -> bool
fn has_generators(&self) -> bool
fn references_error(&self) -> bool
fn error_reported(&self) -> Result<(), ErrorGuaranteed>
fn has_non_region_param(&self) -> bool
fn has_infer_regions(&self) -> bool
fn has_infer_types(&self) -> bool
fn has_non_region_infer(&self) -> bool
fn has_infer(&self) -> bool
fn has_placeholders(&self) -> bool
fn has_non_region_placeholders(&self) -> bool
fn has_param(&self) -> bool
source§fn has_free_regions(&self) -> bool
fn has_free_regions(&self) -> bool
fn has_erased_regions(&self) -> bool
source§fn has_erasable_regions(&self) -> bool
fn has_erasable_regions(&self) -> bool
source§fn is_global(&self) -> bool
fn is_global(&self) -> bool
source§fn has_late_bound_regions(&self) -> bool
fn has_late_bound_regions(&self) -> bool
source§fn has_non_region_late_bound(&self) -> bool
fn has_non_region_late_bound(&self) -> bool
source§fn has_late_bound_vars(&self) -> bool
fn has_late_bound_vars(&self) -> bool
source§fn still_further_specializable(&self) -> bool
fn still_further_specializable(&self) -> bool
impl
specialization.source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
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default fn from_cycle_error( tcx: Tcx, cycle: &[QueryInfo], _guar: ErrorGuaranteed ) -> T
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: 64 bytes