Struct View 

pub struct View<T> { /* private fields */ }

A view into a policy object.

This struct contains the start and end offsets of the object in the policy data. To read the object, use View::read.

Implementations

impl<T> View<T>

pub fn new(start: PolicyOffset, end: PolicyOffset) -> Self

Creates a new view from the start and end offsets.

impl<T: Sized> View<T>

pub fn at(start: PolicyOffset) -> Self

Creates a new view at the given start offset.

The end offset is calculated as the start offset plus the size of the object.

impl<T: FromBytes + Sized> View<T>

pub fn read(&self, policy_data: &PolicyData) -> T

Reads the object from the policy data.

This function requires the object to have a fixed size and simply copies the object from the policy data.

For variable-sized objects, use View::parse instead.

impl<T: HasMetadata> View<T>

pub fn metadata(&self) -> View<T::Metadata>

Returns a view into the metadata of the object.

Assumes the metadata is at the start of the object.

pub fn read_metadata(&self, policy_data: &PolicyData) -> T::Metadata

Reads the metadata from the policy data.

impl<T: Parse> View<T>

pub fn parse(&self, policy_data: &PolicyData) -> T

Parses the object from the policy data.

This function uses the Parse trait to parse the object from the policy data.

If the object has a fixed size, prefer View::read instead.

Trait Implementations

impl<T: Clone> Clone for View<T>

fn clone(&self) -> View<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for View<T>

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

Formats the value using the given formatter.

impl<T: Copy> Copy for View<T>