[][src]Struct rustc::traits::ProgramClause

pub struct ProgramClause<'tcx> {
    pub goal: DomainGoal<'tcx>,
    pub hypotheses: Goals<'tcx>,
    pub category: ProgramClauseCategory,
}
⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

A "program clause" has the form D :- G1, ..., Gn. It is saying that the domain goal D is true if G1...Gn are provable. This is equivalent to the implication G1..Gn => D; we usually write it with the reverse implication operator :- to emphasize the way that programs are actually solved (via backchaining, which starts with the goal to solve and proceeds from there).

Fields

goal: DomainGoal<'tcx>
⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

This goal will be considered true ...

hypotheses: Goals<'tcx>
⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

... if we can prove these hypotheses (there may be no hypotheses at all):

category: ProgramClauseCategory
⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

Useful for filtering clauses.

Trait Implementations

impl<'tcx> Clone for ProgramClause<'tcx>[src]

impl<'tcx> Copy for ProgramClause<'tcx>[src]

impl<'tcx> Debug for ProgramClause<'tcx>[src]

impl<'tcx> Display for ProgramClause<'tcx>[src]

impl<'tcx> Eq for ProgramClause<'tcx>[src]

impl<'tcx> Hash for ProgramClause<'tcx>[src]

impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for ProgramClause<'tcx>[src]

impl<'tcx> PartialEq<ProgramClause<'tcx>> for ProgramClause<'tcx>[src]

impl<'tcx> Relate<'tcx> for ProgramClause<'tcx>[src]

impl<'tcx> StructuralEq for ProgramClause<'tcx>[src]

impl<'tcx> StructuralPartialEq for ProgramClause<'tcx>[src]

impl<'tcx> TypeFoldable<'tcx> for ProgramClause<'tcx>[src]

Auto Trait Implementations

impl<'tcx> !RefUnwindSafe for ProgramClause<'tcx>

impl<'tcx> !Send for ProgramClause<'tcx>

impl<'tcx> !Sync for ProgramClause<'tcx>

impl<'tcx> Unpin for ProgramClause<'tcx>

impl<'tcx> !UnwindSafe for ProgramClause<'tcx>

Blanket Implementations

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

impl<T> ArenaAllocatable for T where
    T: Copy
[src]

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

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

impl<'a, T> Captures<'a> for T where
    T: ?Sized
[src]

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

impl<T> Erased for T[src]

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

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

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

type Error = !

⚙️ This is an internal compiler API. (rustc_private)

This crate is being loaded from the sysroot, a permanently unstable location for private compiler dependencies. It is not intended for general use. Prefer using a public version of this crate from crates.io via Cargo.toml.

impl<E> SpecializationError for E[src]

impl<'tcx, T> Subst<'tcx> for T where
    T: TypeFoldable<'tcx>, 
[src]

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

type Owned = T

The resulting type after obtaining ownership.

impl<T> ToString for T where
    T: Display + ?Sized
[src]

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.

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.

impl<T> WithConstness for T[src]