Struct SliceReader 

pub struct SliceReader<'a> { /* private fields */ }

Reader which consumes an input byte slice.

Implementations

impl<'a> SliceReader<'a>

pub fn new(bytes: &'a [u8]) -> Result<Self>

Create a new slice reader for the given byte slice.

pub fn error(&mut self, kind: ErrorKind) -> Error

Return an error with the given ErrorKind, annotating it with context about where the error occurred.

pub fn value_error(&mut self, tag: Tag) -> Error

Return an error for an invalid value with the given tag.

pub fn is_failed(&self) -> bool

Did the decoding operation fail due to an error?

Trait Implementations

impl<'a> Clone for SliceReader<'a>

fn clone(&self) -> SliceReader<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for SliceReader<'a>

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

Formats the value using the given formatter.

impl<'a> Reader<'a> for SliceReader<'a>

fn input_len(&self) -> Length

Get the length of the input.

fn peek_byte(&self) -> Option<u8>

Peek at the next byte of input without modifying the cursor.

fn peek_header(&self) -> Result<Header>

Peek forward in the input data, attempting to decode a Header from the data at the current position in the decoder.

fn position(&self) -> Length

Get the position within the buffer.

fn read_slice(&mut self, len: Length) -> Result<&'a [u8]>

Attempt to read data borrowed directly from the input as a slice, updating the internal cursor position.

fn decode<T: Decode<'a>>(&mut self) -> Result<T>

Decode a value which impls the Decode trait.

fn error(&mut self, kind: ErrorKind) -> Error

Return an error with the given ErrorKind, annotating it with context about where the error occurred.

fn finish<T>(self, value: T) -> Result<T>

Finish decoding, returning the given value if there is no remaining data, or an error otherwise

fn remaining_len(&self) -> Length

Get the number of bytes still remaining in the buffer.

fn context_specific<T>( &mut self, tag_number: TagNumber, tag_mode: TagMode, ) -> Result<Option<T>>

where T: DecodeValue<'r> + FixedTag,

Attempt to decode an ASN.1 CONTEXT-SPECIFIC field with the provided TagNumber.

fn is_finished(&self) -> bool

Have we read all of the input data?

fn offset(&self) -> Length

Offset within the original input stream.

fn peek_tag(&self) -> Result<Tag>

Peek at the next byte in the decoder and attempt to decode it as a Tag value.

fn read_byte(&mut self) -> Result<u8>

Read a single byte.

fn read_into<'o>(&mut self, buf: &'o mut [u8]) -> Result<&'o [u8]>

Attempt to read input data, writing it into the provided buffer, and returning a slice on success.

fn read_nested<'n, T, F>(&'n mut self, len: Length, f: F) -> Result<T>

where F: FnOnce(&mut NestedReader<'n, Self>) -> Result<T>,

Read nested data of the given length.

fn read_vec(&mut self, len: Length) -> Result<Vec<u8>>

Available on crate feature alloc only.

Read a byte vector of the given length.

fn sequence<'n, F, T>(&'n mut self, f: F) -> Result<T>

where F: FnOnce(&mut NestedReader<'n, Self>) -> Result<T>,

Read an ASN.1 SEQUENCE, creating a nested Reader for the body and calling the provided closure with it.

fn tlv_bytes(&mut self) -> Result<&'r [u8]>

Obtain a slice of bytes contain a complete TLV production suitable for parsing later.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes