Enum ImpossibleConstraint

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pub enum ImpossibleConstraint {
    ArityMismatch {
        atom: Atom<String>,
        expected: usize,
    },
    FunctionMismatch {
        expected_output: ArcSort,
        expected_input: Vec<ArcSort>,
        actual_output: ArcSort,
        actual_input: Vec<ArcSort>,
    },
}

Expand description

Represents constraints that are logically impossible to satisfy. These are used to signal type errors during constraint solving.

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ArityMismatch

Fields

§atom: Atom<String>

§expected: usize

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FunctionMismatch

Fields

§expected_output: ArcSort

§expected_input: Vec<ArcSort>

§actual_output: ArcSort

§actual_input: Vec<ArcSort>

Trait Implementations§

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impl Clone for ImpossibleConstraint

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fn clone(&self) -> ImpossibleConstraint

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for ImpossibleConstraint

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl !UnwindSafe for ImpossibleConstraint

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,

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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,

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

Mutably borrows from an owned value. Read more

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

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

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

Performs copy-assignment from self to dest. Read more

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

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fn __clone_box(&self, _: Private) -> *mut ()

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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