Struct starlark::values::typing::StarlarkCallable

pub struct StarlarkCallable<'v>(pub Value<'v>);

Marker for a callable value. Can be used in function signatures for better documentation and type checking.

Tuple Fields

0: Value<'v>

Trait Implementations

impl<'v> Clone for StarlarkCallable<'v>

fn clone(&self) -> StarlarkCallable<'v>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'v> Debug for StarlarkCallable<'v>

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

Formats the value using the given formatter.

impl<'v> Dupe for StarlarkCallable<'v>

fn dupe(&self) -> Self

impl<'v> StarlarkTypeRepr for StarlarkCallable<'v>

fn starlark_type_repr() -> Ty

The representation of a type that a user would use verbatim in starlark type annotations

impl<'v> UnpackValue<'v> for StarlarkCallable<'v>

fn unpack_value(value: Value<'v>) -> Option<Self>

Given a Value, try and unpack it into the given type, which may involve some element of conversion.

fn expected() -> String

Description of values acceptable by unpack_value, e. g. list or str.

fn unpack_value_err(value: Value<'v>) -> Result<Self>

Unpack a value, but return error instead of None if unpacking fails.

fn unpack_param(value: Value<'v>) -> Result<Self>

Unpack value, but instead of None return error about incorrect argument type.

fn unpack_named_param(value: Value<'v>, param_name: &str) -> Result<Self>

Unpack value, but instead of None return error about incorrect named argument type.

impl<'v> Copy for StarlarkCallable<'v>