Trait gvariant::Cast

pub trait Cast: AlignOf + AllBitPatternsValid + 'static + PartialEq + Debug + ToOwned {
    fn default_ref() -> &'static Self;
    fn try_from_aligned_slice(
        slice: &AlignedSlice<Self::AlignOf>
    ) -> Result<&Self, WrongSize>;
    fn try_from_aligned_slice_mut(
        slice: &mut AlignedSlice<Self::AlignOf>
    ) -> Result<&mut Self, WrongSize>;

    fn from_aligned_slice(slice: &AlignedSlice<Self::AlignOf>) -> &Self { ... }
}

Trait implemented by all our types that have the same representation as the GVariant type

This allows casting appropriately aligned AlignedSlices to rust types.

Don't implement this class for your own types. It's already implemented for all appropriate types. It's automatically implemented for Structure types generated by the gv! macro.

Required methods

fn default_ref() -> &'static Self

Get a static reference to the default value for this type.

In GVariant every type has a default value which is used in certian circumstances in-lieu of returning errors during deserialisation. We're always dealing with references so std::default::Default isn't appropriate.

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

Loading content...

Provided methods

fn from_aligned_slice(slice: &AlignedSlice<Self::AlignOf>) -> &Self

Cast slice to type Self.

This always succeeds. If the slice is the wrong size a defualt value is returned in accordance with the GVariant spec.

Loading content...

Implementations on Foreign Types

impl Cast for u8

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

impl Cast for u16

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

impl Cast for i16

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

impl Cast for u32

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

impl Cast for i32

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

impl Cast for u64

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

impl Cast for i64

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

impl Cast for f64

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

impl<'a, T: Cast + 'static + Copy> Cast for [T]

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    _: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

Loading content...

Implementors

impl Cast for Bool

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

impl Cast for Str

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

impl Cast for Variant

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

impl<T: Cast + ?Sized> Cast for MaybeNonFixedSize<T>

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

impl<T: Cast + ?Sized> Cast for NonFixedWidthArray<T>

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

impl<T: Cast> Cast for MaybeFixedSize<T>

fn default_ref() -> &'static Self

fn try_from_aligned_slice(
    slice: &AlignedSlice<Self::AlignOf>
) -> Result<&Self, WrongSize>

fn try_from_aligned_slice_mut(
    slice: &mut AlignedSlice<Self::AlignOf>
) -> Result<&mut Self, WrongSize>

Loading content...