Enum ConstraintError

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pub enum ConstraintError<Var, Value> {
    InconsistentConstraint(Var, Value, Value),
    UnconstrainedVar(Var),
    NoConstraintSatisfied(Vec<ConstraintError<Var, Value>>),
    ImpossibleCaseIdentified(ImpossibleConstraint),
}

Expand description

Errors that can occur during constraint solving. These represent various ways that constraint satisfaction can fail.

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InconsistentConstraint(Var, Value, Value)

A variable was assigned two different, incompatible values

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UnconstrainedVar(Var)

A variable in the constraint range was not assigned any value

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NoConstraintSatisfied(Vec<ConstraintError<Var, Value>>)

None of the alternative constraints in an XOR constraint could be satisfied

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ImpossibleCaseIdentified(ImpossibleConstraint)

An impossible constraint was encountered during solving

Implementations§

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impl ConstraintError<AtomTerm, ArcSort>

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pub fn to_type_error(&self) -> TypeError

Converts a ConstraintError produced by type checking into a type error.

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impl<Var: Debug, Value: Debug> Debug for ConstraintError<Var, Value>

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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<Var, Value> Freeze for ConstraintError<Var, Value>
where Var: Freeze, Value: Freeze,

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impl<Var, Value> !RefUnwindSafe for ConstraintError<Var, Value>

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impl<Var, Value> Send for ConstraintError<Var, Value>
where Var: Send, Value: Send,

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impl<Var, Value> Sync for ConstraintError<Var, Value>
where Var: Sync, Value: Sync,

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impl<Var, Value> Unpin for ConstraintError<Var, Value>
where Var: Unpin, Value: Unpin,

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impl<Var, Value> !UnwindSafe for ConstraintError<Var, Value>

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> 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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