Struct Extension 

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

One extension: what it is, whether it must be understood, and its value.

Implementations

impl<'a> Extension<'a>

pub fn kind(self) -> Oid<'a>

Which extension this is.

pub fn is_critical(self) -> bool

Whether a relying party that does not understand this extension must refuse the certificate.

pub fn value(self) -> &'a [u8]

The value, still encoded: the contents of the octet string the extension wraps it in, which is a structure of its own.

pub fn span(self) -> Span

Where the extension sits in the document.

pub fn reader<W: Work + 'a>(self, execution: &W) -> Result<Reader<'a>>

A reader over the value using the current execution domain and the original parser session’s cumulative ceilings, offsets and depth.

How a scheme reads an extension of its own. Sharing the budget is what keeps a certificate carrying a hundred extensions from costing a hundred times what the caller allowed, and the offsets a reader made this way reports are offsets in the whole document. The wrapped value sits below extnValue and retains the certificate’s depth allowance.

pub fn reader_scoped<'operation, W: Work>( self, execution: &'operation W, ) -> Result<ScopedReader<'a, 'operation>>

where 'a: 'operation,

Opens original payload bytes under a shorter current operation. Parsed input views keep their source lifetime, while only the cursor/scratch borrows this execution. Depth, source and query admission are unchanged.

pub fn reader_in<'work>(self, query: &Reader<'work>) -> Result<Reader<'work>>

where 'a: 'work,

Original DER value under both origin and current query ceilings.

The query may come from another source. Original parser identity, offsets and inherited depth are preserved from creation; allocation, traversal and scratch also obey the current operation’s local budget and aggregate account. Previously retained storage is not transferred.

pub fn parser(self) -> &'a Parser

The parser the certificate was read with, whose budget every decode of this extension shares.

Trait Implementations

impl<'a> Clone for Extension<'a>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for Extension<'a>

impl<'a> Debug for Extension<'a>

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

Formats the value using the given formatter.