Struct rustc_mir::dataflow::lattice::Dual

pub struct Dual<T>(pub T);

The counterpart of a given semilattice T using the inverse order.

The dual of a join-semilattice is a meet-semilattice and vice versa. For example, the dual of a powerset has the empty set as its top element and the full set as its bottom element and uses set intersection as its join operator.

Trait Implementations

impl<T> Borrow<T> for Dual<T>

fn borrow(&self) -> &T

Immutably borrows from an owned value.

impl<T> BorrowMut<T> for Dual<T>

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

Mutably borrows from an owned value.

impl<T: Clone> Clone for Dual<T>

fn clone(&self) -> Dual<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Dual<T>

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

Formats the value using the given formatter.

impl<T, C> DebugWithContext<C> for Dual<T> where
    T: DebugWithContext<C>, 

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

fn fmt_diff_with(&self, old: &Self, ctxt: &C, f: &mut Formatter<'_>) -> Result

Print the difference between self and old.

impl<T: Idx> GenKill<T> for Dual<BitSet<T>>

fn gen(&mut self, elem: T)

Inserts elem into the state vector.

fn kill(&mut self, elem: T)

Removes elem from the state vector.

fn gen_all(&mut self, elems: impl IntoIterator<Item = T>)

Calls gen for each element in elems.

fn kill_all(&mut self, elems: impl IntoIterator<Item = T>)

Calls kill for each element in elems.

impl<T: MeetSemiLattice> JoinSemiLattice for Dual<T>

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

Computes the least upper bound of two elements, storing the result in self and returning true if self has changed.

impl<T: JoinSemiLattice> MeetSemiLattice for Dual<T>

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

Computes the greatest lower bound of two elements, storing the result in self and returning true if self has changed.

impl<T: PartialEq> PartialEq<Dual<T>> for Dual<T>

fn eq(&self, other: &Dual<T>) -> bool

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

fn ne(&self, other: &Dual<T>) -> bool

This method tests for !=.

impl<T: Copy> Copy for Dual<T>

impl<T: Eq> Eq for Dual<T>

impl<T> StructuralEq for Dual<T>

impl<T> StructuralPartialEq for Dual<T>

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.