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, Error>

Create a new slice reader for the given byte slice.

Errors

If bytes is too long.

pub fn new_with_encoding_rules( bytes: &'a [u8], encoding_rules: EncodingRules, ) -> Result<Self, Error>

Create a new slice reader with the given encoding rules.

Errors

If bytes is too long.

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 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 read_nested<T, F, E>(&mut self, len: Length, f: F) -> Result<T, E>

where F: FnOnce(&mut Self) -> Result<T, E>, E: From<Error>,

Read nested data of the given length.

const CAN_READ_SLICE: bool = true

Does this reader support the read_slice method? (i.e. can it borrow from his input?)

fn encoding_rules(&self) -> EncodingRules

Get the EncodingRules which should be applied when decoding the input.

fn input_len(&self) -> Length

Get the length of the input.

fn position(&self) -> Length

Get the position within the buffer.

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

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, T::Error>

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(self) -> Result<(), Error>

Finish decoding, returning Ok(()) 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>, T::Error>

where T: DecodeValue<'r> + FixedTag + 'r,

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

fn drain(&mut self, amount: Length) -> Result<(), Error>

Drain the given amount of data from the reader, discarding it.

fn is_finished(&self) -> bool

Have we read all input data?

fn offset(&self) -> Length

Offset within the original input stream.

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

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

fn peek_into(&self, buf: &mut [u8]) -> Result<(), Error>

Peek at the decoded data without updating the internal state, writing into the provided output buffer. Attempts to fill the entire buffer.

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

👎Deprecated since 0.8.0:

use Header::peek instead

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

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

👎Deprecated since 0.8.0:

use Tag::peek instead

Peek at the next tag in the reader.

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

Read a single byte.

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

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

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

Read a byte vector of the given length.

fn sequence<F, T, E>(&mut self, f: F) -> Result<T, E>

where F: FnOnce(&mut Self) -> Result<T, E>, E: From<Error>,

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], Error>

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