LazyEvaluation

evaltrees::eval

Struct LazyEvaluation 

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pub struct LazyEvaluation { /* private fields */ }
Expand description

Lazy evaluation.

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impl LazyEvaluation

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pub fn new(decls: Vec<Decl<()>>) -> LazyEvaluation

Creates a lazy-evalauation interpreter from a list of declarations. The nameless declaration will be the expression.

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impl Debug for LazyEvaluation

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

Formats the value using the given formatter. Read more
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impl Display for LazyEvaluation

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

Formats the value using the given formatter. Read more
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impl Evaluator for LazyEvaluation

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fn normal_form(&self) -> bool

Determines whether the primary expression is currently in a normal form, i.e. one that cannot be further reduced.
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fn set_print_style(&mut self, print_style: PrintStyle)

Sets the print style.
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fn step(&mut self) -> Result<(), Error>

Performs a single reduction step.

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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<U> 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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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.