Struct DescriptorChain 

pub struct DescriptorChain<'a, T> {
    pub descriptor: T,
    pub buffer: &'a [u8],
}

A chain of descriptors.

Holds the current descriptor and a reference to the bytes after the descriptor. Deferences to the descriptor.

Fields

descriptor: T

The current descriptor.

buffer: &'a [u8]

The raw bytes following the descriptor.

Implementations

impl<'a> DescriptorChain<'a, ConfigurationDescriptor>

pub fn try_from_slice(buf: &'a [u8]) -> Result<Self, HostError>

Parse a full Configuration Descriptor blob, giving access to sub-descriptors via iterators.

pub fn iter_descriptors(&self) -> RawDescriptorIterator<'a>

Iterate over all raw descriptors in this Configuration.

pub fn iter_interface(&self) -> InterfaceIterator<'_>

Iterate over all interface descriptors of this Configuration.

pub fn visit_descriptors<V: DescriptorVisitor<'a>>( &self, visitor: &mut V, ) -> Result<(), VisitError<V::Error>>

Iterate over all descriptors of this Configuration, passing to Visitor callbacks. Returns Ok(()) on completion (including early stop), or Err(e) on error.

impl<'a> DescriptorChain<'a, InterfaceDescriptor>

pub fn iter_descriptors(&self) -> RawDescriptorIterator<'_>

Iterate over raw descriptors inside this interface.

pub fn iter_endpoints(&'a self) -> EndpointIterator<'a>

Iterate over endpoint descriptors inside this interface.

Trait Implementations

impl<'a, T: Clone> Clone for DescriptorChain<'a, T>

fn clone(&self) -> DescriptorChain<'a, T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, T: Debug> Debug for DescriptorChain<'a, T>

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

Formats the value using the given formatter.

impl<'a, T> Deref for DescriptorChain<'a, T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.

impl<'a, T> DerefMut for DescriptorChain<'a, T>

fn deref_mut(&mut self) -> &mut T

Mutably dereferences the value.

impl<T> Format for DescriptorChain<'_, T>

where T: Format,

Available on crate feature defmt only.

fn format(&self, fmt: Formatter<'_>)

Writes the defmt representation of self to fmt.

impl<'a> From<&DescriptorChain<'a, InterfaceDescriptor>> for InterfaceDescriptor

fn from(chain: &InterfaceDescriptorChain<'a>) -> Self

Converts to this type from the input type.

impl<'a, T: PartialEq> PartialEq for DescriptorChain<'a, T>

fn eq(&self, other: &DescriptorChain<'a, T>) -> 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<T> Copy for DescriptorChain<'_, T>

where T: Copy,

impl<'a, T: Eq> Eq for DescriptorChain<'a, T>

impl<'a, T> StructuralPartialEq for DescriptorChain<'a, T>