Struct jlrs::value::datatype::DataType

#[repr(transparent)]pub struct DataType<'frame>(_, _);

Julia type information. You can acquire a Value's datatype by by calling Value::datatype. This struct implements JuliaTypecheck and Cast. It can be used in combination with DataType::is and Value::is; if the check returns true the Value can be cast to DataType:

julia.frame(2, |global, frame| {
    let val = Value::new(frame, 1u8)?;
    let typeof_func = Module::core(global).function("typeof")?;
    let ty_val = typeof_func.call1(frame, val)?.unwrap();
    assert!(ty_val.is::<DataType>());
    assert!(ty_val.cast::<DataType>().is_ok());
    Ok(())
}).unwrap();

Implementations

impl<'frame> DataType<'frame>

pub fn is<T: JuliaTypecheck>(self) -> bool

Performs the given typecheck.

pub fn size(self) -> i32

Returns the size of a value of this type in bytes.

pub fn align(self) -> u16

Returns the alignment of a value of this type in bytes.

pub fn nbits(self) -> i32

Returns the alignment of a value of this type in bits.

pub fn nfields(self) -> u32

Returns the number of fields of a value of this type.

pub fn isinlinealloc(self) -> bool

Returns true if a value of this type stores its data inline.

Trait Implementations

impl<'frame, 'data> Cast<'frame, 'data> for DataType<'frame>

type Output = Self

fn cast(value: Value<'frame, 'data>) -> JlrsResult<Self::Output>

unsafe fn cast_unchecked<'fr, 'da>(value: Value<'frame, 'data>) -> Self::Output

impl<'frame> Clone for DataType<'frame>

fn clone(&self) -> DataType<'frame>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'frame> Copy for DataType<'frame>

impl<'frame> JuliaTypecheck for DataType<'frame>

unsafe fn julia_typecheck(t: DataType) -> bool