Struct OptionValueTree

pub struct OptionValueTree<T>(/* private fields */)
where
    T: Strategy;

ValueTree type corresponding to OptionStrategy.

Trait Implementations

impl<T: Strategy> Clone for OptionValueTree<T>

where T::Tree: Clone,

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Strategy> Debug for OptionValueTree<T>

where T::Tree: Debug,

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

Formats the value using the given formatter.

impl<T> ValueTree for OptionValueTree<T>

where T: Strategy,

type Value = Option<<T as Strategy>::Value>

The type of the value produced by this ValueTree.

fn current(&self) -> Self::Value

Returns the current value.

fn simplify(&mut self) -> bool

Attempts to simplify the current value. Notionally, this sets the “high” value to the current value, and the current value to a “halfway point” between high and low, rounding towards low.

fn complicate(&mut self) -> bool

Attempts to partially undo the last simplification. Notionally, this sets the “low” value to one plus the current value, and the current value to a “halfway point” between high and the new low, rounding towards low.

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.