Enum chalk_engine::Literal[−][src]

pub enum Literal<I: Interner> {
    Positive(InEnvironment<Goal<I>>),
    Negative(InEnvironment<Goal<I>>),
}
Expand description

Either A or ~A, where A is a Env |- Goal.

Variants

Positive(InEnvironment<Goal<I>>)
Negative(InEnvironment<Goal<I>>)

Trait Implementations

impl<I: Clone + Interner> Clone for Literal<I>[src]

fn clone(&self) -> Literal<I>[src]

Returns a copy of the value. Read more

fn clone_from(&mut self, source: &Self)1.0.0[src]

Performs copy-assignment from source. Read more

impl<I: Debug + Interner> Debug for Literal<I>[src]

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

Formats the value using the given formatter. Read more

impl<I: Interner> Fold<I> for Literal<I>[src]

type Result = Literal<I>

The type of value that will be produced once folding is done. Typically this is Self, unless Self contains borrowed values, in which case owned values are produced (for example, one can fold over a &T value where T: Fold, in which case you get back a T, not a &T). Read more

fn fold_with<'i>(
    self,
    folder: &mut dyn Folder<'i, I>,
    outer_binder: DebruijnIndex
) -> Fallible<Self::Result> where
    I: 'i, [src]

Apply the given folder folder to self; binders is the number of binders that are in scope when beginning the folder. Typically binders starts as 0, but is adjusted when we encounter Binders<T> in the IR or other similar constructs. Read more

impl<I: Interner> Hash for Literal<I>[src]

fn hash<H: Hasher>(&self, state: &mut H)[src]

Feeds this value into the given Hasher. Read more

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 1.3.0[src]

Feeds a slice of this type into the given Hasher. Read more

impl<I: Interner> PartialEq<Literal<I>> for Literal<I>[src]

fn eq(&self, other: &Literal<I>) -> bool[src]

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

#[must_use]
fn ne(&self, other: &Rhs) -> bool1.0.0[src]

This method tests for !=.

impl<I: Interner> Visit<I> for Literal<I>[src]

fn visit_with<'i, B>(
    &self,
    visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
    outer_binder: DebruijnIndex
) -> ControlFlow<B> where
    I: 'i, [src]

Apply the given visitor visitor to self; binders is the number of binders that are in scope when beginning the visitor. Typically binders starts as 0, but is adjusted when we encounter Binders<T> in the IR or other similar constructs. Read more

impl<I: Interner> Eq for Literal<I>[src]

Auto Trait Implementations

impl<I> RefUnwindSafe for Literal<I> where
    <I as Interner>::InternedGoal: RefUnwindSafe,
    <I as Interner>::InternedProgramClauses: RefUnwindSafe, 

impl<I> Send for Literal<I> where
    <I as Interner>::InternedGoal: Send,
    <I as Interner>::InternedProgramClauses: Send, 

impl<I> Sync for Literal<I> where
    <I as Interner>::InternedGoal: Sync,
    <I as Interner>::InternedProgramClauses: Sync, 

impl<I> Unpin for Literal<I> where
    <I as Interner>::InternedGoal: Unpin,
    <I as Interner>::InternedProgramClauses: Unpin, 

impl<I> UnwindSafe for Literal<I> where
    <I as Interner>::InternedGoal: UnwindSafe,
    <I as Interner>::InternedProgramClauses: UnwindSafe, 

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T> Cast for T[src]

fn cast<U>(self, interner: &<U as HasInterner>::Interner) -> U where
    Self: CastTo<U>,
    U: HasInterner, [src]

Cast a value to type U using CastTo.

impl<Q, K> Equivalent<K> for Q where
    K: Borrow<Q> + ?Sized,
    Q: Eq + ?Sized, [src]

pub fn equivalent(&self, key: &K) -> bool[src]

Compare self to key and return true if they are equal.

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T> Instrument for T[src]

fn instrument(self, span: Span) -> Instrumented<Self>[src]

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self>[src]

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<T, I> Shift<I> for T where
    I: Interner,
    T: Fold<I>, [src]

pub fn shifted_in(self, interner: &I) -> <T as Fold<I>>::Result[src]

Shifts this term in one level of binders.

pub fn shifted_in_from(
    self,
    interner: &I,
    source_binder: DebruijnIndex
) -> <T as Fold<I>>::Result[src]

Shifts a term valid at outer_binder so that it is valid at the innermost binder. See DebruijnIndex::shifted_in_from for a detailed explanation. Read more

pub fn shifted_out_to(
    self,
    interner: &I,
    target_binder: DebruijnIndex
) -> Result<<T as Fold<I>>::Result, NoSolution>[src]

Shifts a term valid at the innermost binder so that it is valid at outer_binder. See DebruijnIndex::shifted_out_to for a detailed explanation. Read more

pub fn shifted_out(
    self,
    interner: &I
) -> Result<<T as Fold<I>>::Result, NoSolution>[src]

Shifts this term out one level of binders.

impl<T> ToOwned for T where
    T: Clone, [src]

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T[src]

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

pub fn clone_into(&self, target: &mut T)[src]

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

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

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

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

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T, I> VisitExt<I> for T where
    I: Interner,
    T: Visit<I>, [src]

fn has_free_vars(&self, interner: &I) -> bool[src]

Check whether there are free (non-bound) variables.