pub struct AstDepth;
Expand description
A simple CostFunction
that counts maximum AST depth.
let e: RecExpr<SymbolLang> = "(do_it foo bar baz)".parse().unwrap();
assert_eq!(AstDepth.cost_rec(&e), 2);
Trait Implementations
sourceimpl<L: Language> CostFunction<L> for AstDepth
impl<L: Language> CostFunction<L> for AstDepth
type Cost = usize
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
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
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more