Enum VariableKind 

pub enum VariableKind {
    Exact(Kind),
    Target,
    TargetInnerValue,
    TargetInnerKey,
}

The Value kind expected to be returned by a Variable.

Variants

Exact(Kind)

An exact Kind means this variable is guaranteed to always contain a value that resolves to this kind.

For example, in map_keys, it is known that the first (and only) variable the closure takes will be a Kind::bytes().

Target

The variable Kind is inferred from the target of the closure.

TargetInnerValue

The variable Kind is inferred from the inner kind of the target of the closure. This requires the closure target to be a collection type.

TargetInnerKey

The variable Kind is inferred from the key or index type of the target. If the target is known to be exactly an object, this is always a Value::bytes(), if it’s known to be exactly an array, it is a Value::integer(), otherwise it is one of the two.

Trait Implementations

impl Clone for VariableKind

fn clone(&self) -> VariableKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VariableKind

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

Formats the value using the given formatter.