Enum LazyInstance 

pub enum LazyInstance<'a> {
    Ready(Cow<'a, Value>),
    Deferred {
        bytes: &'a [u8],
        tag: u32,
        make: fn(&[u8], u32) -> Value,
        cell: OnceLock<Cow<'static, Value>>,
    },
}

The instance a validation error reports, built once and cached.

Variants

Ready(Cow<'a, Value>)

Deferred

Built on first read. A fn pointer rather than a boxed closure: dropck cannot see through a dyn bounded by 'a and would demand borrows outlive the error’s drop, not just its use.

Fields

bytes: &'a [u8]

tag: u32

make: fn(&[u8], u32) -> Value

cell: OnceLock<Cow<'static, Value>>

Implementations

impl<'a> LazyInstance<'a>

pub fn get(&self) -> &Cow<'a, Value>

The instance, building and caching it on the first call.

pub fn into_cow(self) -> Cow<'a, Value>

Consumes self, returning the instance without cloning an already-built one.

Trait Implementations

impl Debug for LazyInstance<'_>

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

Formats the value using the given formatter.