[−][src]Struct egg::AstDepth
A simple CostFunction
that counts maximum ast depth.
let e: RecExpr<StringLang> = "(do_it foo bar baz)".parse().unwrap(); assert_eq!(AstDepth.cost_rec(&e), 2);
Trait Implementations
impl<L: Language> CostFunction<L> for AstDepth
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type Cost = usize
The Cost
type. It only requires PartialOrd
so you can use floating point types, but failed comparisons (NaN
s) will result in a panic. Read more
fn cost<C>(&mut self, enode: &L, costs: C) -> Self::Cost where
C: FnMut(Id) -> Self::Cost,
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C: FnMut(Id) -> Self::Cost,
fn cost_rec(&mut self, expr: &RecExpr<L>) -> Self::Cost
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Auto Trait Implementations
impl RefUnwindSafe for AstDepth
impl Send for AstDepth
impl Sync for AstDepth
impl Unpin for AstDepth
impl UnwindSafe for AstDepth
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,