Struct chalk_ir::Environment

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pub struct Environment<I: Interner> {
    pub clauses: ProgramClauses<I>,
}

Expand description

The set of assumptions we’ve made so far, and the current number of universal (forall) quantifiers we’re within.

Fields

clauses: ProgramClauses

The clauses in the environment.

Implementations

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impl<I: Interner> Environment

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pub fn new(interner: I) -> Self

Creates a new environment.

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pub fn add_clauses<II>(&self, interner: I, clauses: II) -> Self where
II: IntoIterator<Item = ProgramClause>,

Adds (an iterator of) clauses to the environment.

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

True if any of the clauses in the environment have a consequence of Compatible. Panics if the conditions or constraints of that clause are not empty.

Trait Implementations

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impl<I: Clone + Interner> Clone for Environment

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fn clone(&self) -> Environment

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

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impl<I: Interner> Debug for Environment

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

Formats the value using the given formatter. Read more

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impl<I: Interner> Fold for Environment

type Result = Environment

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

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fn fold_with<E>(
 self,
 folder: &mut dyn Folder<I, Error = E>,
 outer_binder: DebruijnIndex
) -> Result<Self::Result, E>

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

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impl<I: Interner> HasInterner for Environment

type Interner = I

The interner associated with the type.

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impl<I: Hash + Interner> Hash for Environment

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

Feeds this value into the given Hasher. Read more

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

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

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impl<I: PartialEq + Interner> PartialEq<Environment> for Environment

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fn eq(&self, other: &Environment) -> bool

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

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fn ne(&self, other: &Environment) -> bool

This method tests for !=.

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impl<I: Interner> Visit for Environment

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fn visit_with(
 &self,
 visitor: &mut dyn Visitor<I, BreakTy = B>,
 outer_binder: DebruijnIndex
) -> ControlFlow

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

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impl<I: Interner> Zip for Environment

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fn zip_with<Z: Zipper>(
 zipper: &mut Z,
 variance: Variance,
 a: &Self,
 b: &Self
) -> Fallible<()>

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

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impl<I: Interner> StructuralPartialEq for Environment

Auto Trait Implementations

impl RefUnwindSafe for Environment where
::InternedProgramClauses: RefUnwindSafe,

impl Send for Environment where
::InternedProgramClauses: Send,

impl Sync for Environment where
::InternedProgramClauses: Sync,

impl Unpin for Environment where
::InternedProgramClauses: Unpin,

impl UnwindSafe for Environment where
::InternedProgramClauses: UnwindSafe,

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> Cast for T

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fn cast(self, interner: U::Interner) -> U where
Self: CastTo,
U: HasInterner,

Cast a value to type U using CastTo.

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impl<T, I> CouldMatch<T> for T where
T: Zip + HasInterner<Interner = I> + ?Sized,
I: Interner,

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fn could_match(
 &self,
 interner: I,
 db: &dyn UnificationDatabase,
 other: &T
) -> bool

Checks whether self and other could possibly match.

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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

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fn shifted_in(self, interner: I) -> <T as Fold>::Result

Shifts this term in one level of binders.

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fn shifted_in_from(
 self,
 interner: I,
 source_binder: DebruijnIndex
) -> <T as Fold>::Result

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

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fn shifted_out_to(
 self,
 interner: I,
 target_binder: DebruijnIndex
) -> Result<<T as Fold>::Result, NoSolution>

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

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fn shifted_out(self, interner: I) -> Result<<T as Fold>::Result, NoSolution>

Shifts this term out one level of binders.

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

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

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fn clone_into(&self, target: &mut T)

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

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

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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

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

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

Struct chalk_ir::Environment

Fields

Implementations

impl<I: Interner> Environment<I>

pub fn new(interner: I) -> Self

pub fn add_clauses<II>(&self, interner: I, clauses: II) -> Self where II: IntoIterator<Item = ProgramClause<I>>,

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

Trait Implementations

impl<I: Clone + Interner> Clone for Environment<I>

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

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

impl<I: Interner> Debug for Environment<I>

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

impl<I: Interner> Fold<I> for Environment<I>

type Result = Environment<I>

fn fold_with<E>( self, folder: &mut dyn Folder<I, Error = E>, outer_binder: DebruijnIndex) -> Result<Self::Result, E>

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

type Interner = I

impl<I: Hash + Interner> Hash for Environment<I>

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

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

impl<I: PartialEq + Interner> PartialEq<Environment<I>> for Environment<I>

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

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

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

fn visit_with<B>( &self, visitor: &mut dyn Visitor<I, BreakTy = B>, outer_binder: DebruijnIndex) -> ControlFlow<B>

impl<I: Interner> Zip<I> for Environment<I>

fn zip_with<Z: Zipper<I>>( zipper: &mut Z, variance: Variance, a: &Self, b: &Self) -> Fallible<()>

impl<I: Interner> Copy for Environment<I> where I::InternedProgramClauses: Copy,

impl<I: Eq + Interner> Eq for Environment<I>

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

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

Auto Trait Implementations

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

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

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

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

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

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<T> Cast for T

fn cast<U>(self, interner: U::Interner) -> U where Self: CastTo<U>, U: HasInterner,

impl<T, I> CouldMatch<T> for T where T: Zip<I> + HasInterner<Interner = I> + ?Sized, I: Interner,

fn could_match( &self, interner: I, db: &dyn UnificationDatabase<I>, other: &T) -> bool

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

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

fn shifted_in(self, interner: I) -> <T as Fold<I>>::Result

fn shifted_in_from( self, interner: I, source_binder: DebruijnIndex) -> <T as Fold<I>>::Result

fn shifted_out_to( self, interner: I, target_binder: DebruijnIndex) -> Result<<T as Fold<I>>::Result, NoSolution>

fn shifted_out(self, interner: I) -> Result<<T as Fold<I>>::Result, NoSolution>

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

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

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

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

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

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

pub fn add_clauses<II>(&self, interner: I, clauses: II) -> Self where
II: IntoIterator<Item = ProgramClause<I>>,

fn fold_with<E>(
self,
folder: &mut dyn Folder<I, Error = E>,
outer_binder: DebruijnIndex
) -> Result<Self::Result, E>

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

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

fn visit_with<B>(
&self,
visitor: &mut dyn Visitor<I, BreakTy = B>,
outer_binder: DebruijnIndex
) -> ControlFlow<B>

fn zip_with<Z: Zipper<I>>(
zipper: &mut Z,
variance: Variance,
a: &Self,
b: &Self
) -> Fallible<()>

impl<I: Interner> Copy for Environment<I> where
I::InternedProgramClauses: Copy,

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

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

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

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

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

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

fn cast<U>(self, interner: U::Interner) -> U where
Self: CastTo<U>,
U: HasInterner,

impl<T, I> CouldMatch<T> for T where
T: Zip<I> + HasInterner<Interner = I> + ?Sized,
I: Interner,

fn could_match(
&self,
interner: I,
db: &dyn UnificationDatabase<I>,
other: &T
) -> bool

impl<T, U> Into<U> for T where
U: From<T>,

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

fn shifted_in_from(
self,
interner: I,
source_binder: DebruijnIndex
) -> <T as Fold<I>>::Result

fn shifted_out_to(
self,
interner: I,
target_binder: DebruijnIndex
) -> Result<<T as Fold<I>>::Result, NoSolution>

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

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