Struct domain::rdata::rfc1035::Null

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

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.

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impl<Octs> Null<Octs>

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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.

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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.

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impl Null<[u8]>

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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.

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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.

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impl<Octs: ?Sized> Null<Octs>

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pub fn data(&self) -> &Octs

The raw content of the record.

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

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pub fn len(&self) -> usize

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pub fn is_empty(&self) -> bool

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impl<Octs> Null<Octs>

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

Trait Implementations§

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

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fn as_ref(&self) -> &Other

Converts this type into a shared reference of the (usually inferred) input type.
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impl<Octs, Other> CanonicalOrd<Null<Other>> for Null<Octs>
where Octs: AsRef<[u8]> + ?Sized, Other: AsRef<[u8]> + ?Sized,

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

Returns the canonical ordering between self and other.
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fn canonical_lt(&self, other: &Rhs) -> bool

Returns whether self is canonically less than other.
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fn canonical_le(&self, other: &Rhs) -> bool

Returns whether self is canonically less than or equal to other.
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fn canonical_gt(&self, other: &Rhs) -> bool

Returns whether self is canonically greater than other.
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fn canonical_ge(&self, other: &Rhs) -> bool

Returns whether self is canonically greater than or equal to other.
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impl<Octs: Clone + ?Sized> Clone for Null<Octs>

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

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<Octs: AsRef<[u8]> + ?Sized> ComposeRecordData for Null<Octs>

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

Returns the length of the record data if available. Read more
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fn compose_rdata<Target: Composer + ?Sized>( &self, target: &mut Target, ) -> Result<(), Target::AppendError>

Appends the wire format of the record data into target.
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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.
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fn compose_len_rdata<Target: Composer + ?Sized>( &self, target: &mut Target, ) -> Result<(), Target::AppendError>

Appends the record data prefixed with its length.
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fn compose_canonical_len_rdata<Target: Composer + ?Sized>( &self, target: &mut Target, ) -> Result<(), Target::AppendError>

Appends the record data prefixed with its length.
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impl<Octs: AsRef<[u8]>> Debug for Null<Octs>

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

Formats the value using the given formatter. Read more
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impl<Octs: AsRef<[u8]>> Display for Null<Octs>

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

Formats the value using the given formatter. Read more
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impl<O, N> From<Null<O>> for AllRecordData<O, N>

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

Converts to this type from the input type.
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impl<Octs: AsRef<[u8]> + ?Sized> Hash for Null<Octs>

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

Feeds this value into the given Hasher. Read more
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impl<Octs, SrcOcts> OctetsFrom<Null<SrcOcts>> for Null<Octs>
where Octs: OctetsFrom<SrcOcts>,

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

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

Performs the conversion.
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impl<Octs: AsRef<[u8]> + ?Sized> Ord for Null<Octs>

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

This method returns an Ordering between self and other. Read more
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impl<'a, Octs> ParseRecordData<'a, Octs> for Null<Octs::Range<'a>>
where Octs: Octets + ?Sized,

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

Parses the record data. Read more
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impl<Octs, Other> PartialEq<Null<Other>> for Null<Octs>
where Octs: AsRef<[u8]> + ?Sized, Other: AsRef<[u8]> + ?Sized,

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<Octs, Other> PartialOrd<Null<Other>> for Null<Octs>
where Octs: AsRef<[u8]> + ?Sized, Other: AsRef<[u8]> + ?Sized,

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

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<Octs: ?Sized> RecordData for Null<Octs>

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fn rtype(&self) -> Rtype

Returns the record type associated with this record data instance. Read more
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impl<Octs: AsRef<[u8]> + ?Sized> Eq for Null<Octs>

Auto Trait Implementations§

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impl<Octs> Freeze for Null<Octs>
where Octs: Freeze + ?Sized,

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impl<Octs> RefUnwindSafe for Null<Octs>
where Octs: RefUnwindSafe + ?Sized,

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impl<Octs> Send for Null<Octs>
where Octs: Send + ?Sized,

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impl<Octs> Sync for Null<Octs>
where Octs: Sync + ?Sized,

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impl<Octs> Unpin for Null<Octs>
where Octs: Unpin + ?Sized,

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impl<Octs> UnwindSafe for Null<Octs>
where Octs: UnwindSafe + ?Sized,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<Source, Target> OctetsInto<Target> for Source
where Target: OctetsFrom<Source>,

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type Error = <Target as OctetsFrom<Source>>::Error

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fn try_octets_into( self, ) -> Result<Target, <Source as OctetsInto<Target>>::Error>

Performs the conversion.
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fn octets_into(self) -> Target
where Self::Error: Into<Infallible>,

Performs an infallible conversion.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more