Struct ObjectHandle 

pub struct ObjectHandle(/* private fields */);

Identifiers that provide a device- and session-unique consistent reference to a logical object on a device.

Object handles are used in MTP transactions to reference a logical object on the device, but do not necessarily reference actual data constructs on the device.

Object handles are only persistent within an MTP session; once a session has been re-opened, all previous values shall be assumed to be invalid, and the contents of the Responder must be re-enumerated if object handles are needed

Implementations

impl ObjectHandle

pub const NONE: ObjectHandle

Indicates the absense of an object handle

This is used in both parameters (e.g. not assigning a parent to an object), and return types in contexts where missing objects are not errors.

pub const ALL: ObjectHandle

Indicates a selection of all objects in the context

For example in the DeleteObject operation, this can be used to delete all objects on the responder.

Trait Implementations

impl ArrayEncodable for ObjectHandle

impl Clone for ObjectHandle

fn clone(&self) -> ObjectHandle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ObjectHandle

impl Debug for ObjectHandle

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

Formats the value using the given formatter.

impl Default for ObjectHandle

fn default() -> ObjectHandle

Returns the “default value” for a type.

impl DekuContainerRead<'_> for ObjectHandle

fn from_reader<R, 'a>( __deku_input: (&'a mut R, usize), ) -> Result<(usize, ObjectHandle), DekuError>

where R: Read + Seek,

Construct type from Reader implementing no_std_io::Read.

fn from_bytes( __deku_input: (&[u8], usize), ) -> Result<((&[u8], usize), ObjectHandle), DekuError>

Read bytes and construct type

impl DekuContainerWrite for ObjectHandle

fn to_bytes(&self) -> Result<Vec<u8>, DekuError>

Write struct/enum to Vec

fn to_slice(&self, buf: &mut [u8]) -> Result<usize, DekuError>

Write struct/enum to a given slice

impl DekuReader<'_, Endian> for ObjectHandle

fn from_reader_with_ctx<R>( reader: &mut Reader<R>, ctx: Endian, ) -> Result<ObjectHandle, DekuError>

where R: Read + Seek, ObjectHandle: Sized,

Construct type from reader implementing no_std_io::Read, with ctx.

impl DekuReader<'_> for ObjectHandle

fn from_reader_with_ctx<R>( __deku_reader: &mut Reader<R>, _: (), ) -> Result<ObjectHandle, DekuError>

where R: Read + Seek,

Construct type from reader implementing no_std_io::Read, with ctx.

impl DekuUpdate for ObjectHandle

fn update(&mut self) -> Result<(), DekuError>

Apply updates

impl DekuWriter for ObjectHandle

fn to_writer<W>( &self, __deku_writer: &mut Writer<W>, _: (), ) -> Result<(), DekuError>

where W: Write + Seek,

Write type to bytes

impl DekuWriter<Endian> for ObjectHandle

fn to_writer<W>( &self, writer: &mut Writer<W>, _: Endian, ) -> Result<(), DekuError>

where W: Write + Seek,

Write type to bytes

impl Eq for ObjectHandle

impl From<ObjectHandle> for Parameter

fn from(value: ObjectHandle) -> Parameter

Converts to this type from the input type.

impl From<u32> for ObjectHandle

fn from(value: u32) -> ObjectHandle

Converts to this type from the input type.

impl Hash for ObjectHandle

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ObjectHandle

fn cmp(&self, other: &ObjectHandle) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ObjectHandle

fn eq(&self, other: &ObjectHandle) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for ObjectHandle

fn partial_cmp(&self, other: &ObjectHandle) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl PropertyDataType for ObjectHandle

const CODE: u16 = <u32 as PropertyDataType>::CODE

The raw datacode for this datatype

impl StructuralPartialEq for ObjectHandle

impl TryFrom<&[u8]> for ObjectHandle

type Error = DekuError

The type returned in the event of a conversion error.

fn try_from( input: &[u8], ) -> Result<ObjectHandle, <ObjectHandle as TryFrom<&[u8]>>::Error>

Performs the conversion.

impl TryFrom<ObjectHandle> for Vec<u8>

type Error = DekuError

The type returned in the event of a conversion error.

fn try_from( input: ObjectHandle, ) -> Result<Vec<u8>, <Vec<u8> as TryFrom<ObjectHandle>>::Error>

Performs the conversion.