Trait parity_scale_codec::Input [−][src]
Trait that allows reading of data into a slice.
Required methods
fn remaining_len(&mut self) -> Result<Option<usize>, Error>
[src]
Should return the remaining length of the input data. If no information about the input
length is available, None
should be returned.
The length is used to constrain the preallocation while decoding. Returning a garbage
length can open the doors for a denial of service attack to your application.
Otherwise, returning None
can decrease the performance of your application.
fn read(&mut self, into: &mut [u8]) -> Result<(), Error>
[src]
Read the exact number of bytes required to fill the given buffer.
Note that this function is similar to std::io::Read::read_exact
and not
std::io::Read::read
.
Provided methods
fn read_byte(&mut self) -> Result<u8, Error>
[src]
Read a single byte from the input.
fn descend_ref(&mut self) -> Result<(), Error>
[src]
Descend into nested reference when decoding.
This is called when decoding a new refence-based instance,
such as Vec
or Box
. Currently all such types are
allocated on the heap.
fn ascend_ref(&mut self)
[src]
Ascend to previous structure level when decoding. This is called when decoding reference-based type is finished.