Struct Null

pub struct Null<Octs: ?Sized> { /* private fields */ }

Null record data.

Null records can contain whatever data. They are experimental and not allowed in zone files.

The Null record type is defined in RFC 1035, section 3.3.10.

Implementations

impl<Octs> Null<Octs>

pub fn from_octets(data: Octs) -> Result<Self, LongRecordData>

where Octs: AsRef<[u8]>,

Creates new NULL record data from the given octets.

The function will fail if data is longer than 65,535 octets.

pub unsafe fn from_octets_unchecked(data: Octs) -> Self

Creates new NULL record data without checking.

Safety

The caller has to ensure that data is at most 65,535 octets long.

impl Null<[u8]>

pub fn from_slice(data: &[u8]) -> Result<&Self, LongRecordData>

Creates new NULL record data from an octets slice.

The function will fail if data is longer than 65,535 octets.

pub unsafe fn from_slice_unchecked(data: &[u8]) -> &Self

Creates new NULL record from an octets slice data without checking.

Safety

The caller has to ensure that data is at most 65,535 octets long.

impl<Octs: ?Sized> Null<Octs>

pub fn data(&self) -> &Octs

The raw content of the record.

impl<Octs: AsRef<[u8]>> Null<Octs>

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

impl<Octs> Null<Octs>

pub fn parse<'a, Src: Octets<Range<'a> = Octs> + ?Sized>( parser: &mut Parser<'a, Src>, ) -> Result<Self, ParseError>

Trait Implementations

impl<Octs: AsRef<Other>, Other> AsRef<Other> for Null<Octs>

fn as_ref(&self) -> &Other

Converts this type into a shared reference of the (usually inferred) input type.

impl<Octs, Other> CanonicalOrd<Null<Other>> for Null<Octs>

where Octs: AsRef<[u8]> + ?Sized, Other: AsRef<[u8]> + ?Sized,

fn canonical_cmp(&self, other: &Null<Other>) -> Ordering

Returns the canonical ordering between self and other.

fn canonical_lt(&self, other: &Rhs) -> bool

Returns whether self is canonically less than other.

fn canonical_le(&self, other: &Rhs) -> bool

Returns whether self is canonically less than or equal to other.

fn canonical_gt(&self, other: &Rhs) -> bool

Returns whether self is canonically greater than other.

fn canonical_ge(&self, other: &Rhs) -> bool

Returns whether self is canonically greater than or equal to other.

impl<Octs: Clone + ?Sized> Clone for Null<Octs>

fn clone(&self) -> Null<Octs>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<Octs: AsRef<[u8]> + ?Sized> ComposeRecordData for Null<Octs>

fn rdlen(&self, _compress: bool) -> Option<u16>

Returns the length of the record data if available.

fn compose_rdata<Target: Composer + ?Sized>( &self, target: &mut Target, ) -> Result<(), Target::AppendError>

Appends the wire format of the record data into target.

fn compose_canonical_rdata<Target: Composer + ?Sized>( &self, target: &mut Target, ) -> Result<(), Target::AppendError>

Appends the canonical wire format of the record data into target.

fn compose_len_rdata<Target: Composer + ?Sized>( &self, target: &mut Target, ) -> Result<(), Target::AppendError>

Appends the record data prefixed with its length.

fn compose_canonical_len_rdata<Target: Composer + ?Sized>( &self, target: &mut Target, ) -> Result<(), Target::AppendError>

Appends the record data prefixed with its length.

impl<Octs: AsRef<[u8]>> Debug for Null<Octs>

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

Formats the value using the given formatter.

impl<Octs: AsRef<[u8]>> Display for Null<Octs>

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

Formats the value using the given formatter.

impl<O, N> From<Null<O>> for AllRecordData<O, N>

fn from(value: Null<O>) -> Self

Converts to this type from the input type.

impl<Octs: AsRef<[u8]> + ?Sized> Hash for Null<Octs>

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

impl<Octs, SrcOcts> OctetsFrom<Null<SrcOcts>> for Null<Octs>

where Octs: OctetsFrom<SrcOcts>,

type Error = <Octs as OctetsFrom<SrcOcts>>::Error

fn try_octets_from(source: Null<SrcOcts>) -> Result<Self, Self::Error>

Performs the conversion.

impl<Octs: AsRef<[u8]> + ?Sized> Ord for Null<Octs>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

impl<'a, Octs> ParseRecordData<'a, Octs> for Null<Octs::Range<'a>>

where Octs: Octets + ?Sized,

fn parse_rdata( rtype: Rtype, parser: &mut Parser<'a, Octs>, ) -> Result<Option<Self>, ParseError>

Parses the record data.

impl<Octs, Other> PartialEq<Null<Other>> for Null<Octs>

where Octs: AsRef<[u8]> + ?Sized, Other: AsRef<[u8]> + ?Sized,

fn eq(&self, other: &Null<Other>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<Octs, Other> PartialOrd<Null<Other>> for Null<Octs>

where Octs: AsRef<[u8]> + ?Sized, Other: AsRef<[u8]> + ?Sized,

fn partial_cmp(&self, other: &Null<Other>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<Octs: ?Sized> RecordData for Null<Octs>

fn rtype(&self) -> Rtype

Returns the record type associated with this record data instance.

impl<Octs: AsRef<[u8]> + ?Sized> Eq for Null<Octs>