Struct chalk_ir::Goals

pub struct Goals<I: Interner> { /* fields omitted */ }

A list of goals.

Implementations

impl<I: Interner> Goals<I>

pub fn debug<'a>(&'a self, interner: &'a I) -> GoalsDebug<'a, I>

Show debug output for Goals.

impl<I: Interner> Goals<I>

pub fn new(interner: &I) -> Self

Creates an empty list of goals.

pub fn interned(&self) -> &I::InternedGoals

Get the interned list of goals.

pub fn from(
    interner: &I,
    goals: impl IntoIterator<Item = impl CastTo<Goal<I>>>
) -> Self

Creates Goals using an iterator of goal-like things.

pub fn from_fallible<E>(
    interner: &I,
    goals: impl IntoIterator<Item = Result<impl CastTo<Goal<I>>, E>>
) -> Result<Self, E>

Tries to create a Goals using an iterator of goal-like things.

pub fn iter(&self, interner: &I) -> Iter<Goal<I>>

Get an iterator over the list of goals.

pub fn is_empty(&self, interner: &I) -> bool

Checks whether the list of goals is empty.

pub fn len(&self, interner: &I) -> usize

Returns the number of goals.

pub fn as_slice(&self, interner: &I) -> &[Goal<I>]

Returns a slice containing the list of goals.

Trait Implementations

impl<I: Clone + Interner> Clone for Goals<I> where
    I::InternedGoals: Clone, 

fn clone(&self) -> Goals<I>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<I: Copy + Interner> Copy for Goals<I> where
    I::InternedGoals: Copy, 

impl<I: Interner> Debug for Goals<I>

fn fmt(&self, fmt: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl<I: Eq + Interner> Eq for Goals<I> where
    I::InternedGoals: Eq, 

impl<I: Interner, TI: TargetInterner<I>> Fold<I, TI> for Goals<I>

type Result = Goals<TI>

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).

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

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.

impl<I: Interner> HasInterner for Goals<I>

type Interner = I

The interner associated with the type.

impl<I: Hash + Interner> Hash for Goals<I> where
    I::InternedGoals: Hash, 

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl<I: PartialEq + Interner> PartialEq<Goals<I>> for Goals<I> where
    I::InternedGoals: PartialEq, 

fn eq(&self, other: &Goals<I>) -> bool

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

fn ne(&self, other: &Goals<I>) -> bool

This method tests for !=.

impl<I: Interner> StructuralEq for Goals<I>

impl<I: Interner> StructuralPartialEq for Goals<I>

impl<I: Interner> Visit<I> for Goals<I>

fn visit_with<'i, R: VisitResult>(
    &self,
    visitor: &mut dyn Visitor<'i, I, Result = R>,
    outer_binder: DebruijnIndex
) -> R where
    I: 'i, 

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.

impl<I: Interner> Zip<I> for Goals<I>

fn zip_with<'i, Z: Zipper<'i, I>>(
    zipper: &mut Z,
    a: &Self,
    b: &Self
) -> Fallible<()> where
    I: 'i, 

Uses the zipper to walk through two values, ensuring that they match.