Enum ResourceClass 

#[non_exhaustive]
pub enum ResourceClass {
    In,
    Any,
    Unknown(u16),
}

DNS class. mDNS uses In (1) almost exclusively; the top bit is repurposed per RFC 6762.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

In

Internet (1).

Any

Wildcard (255).

Unknown(u16)

Lossless escape for unknown classes.

Implementations

impl ResourceClass

pub const fn is_in(&self) -> bool

Returns true if this value is of type In. Returns false otherwise

pub const fn is_any(&self) -> bool

Returns true if this value is of type Any. Returns false otherwise

pub const fn is_unknown(&self) -> bool

Returns true if this value is of type Unknown. Returns false otherwise

impl ResourceClass

pub fn unwrap_in(self)

Unwraps this value to the ResourceClass::In variant. Panics if this value is of any other type.

pub fn unwrap_any(self)

Unwraps this value to the ResourceClass::Any variant. Panics if this value is of any other type.

pub fn unwrap_unknown(self) -> u16

Unwraps this value to the ResourceClass::Unknown variant. Panics if this value is of any other type.

impl ResourceClass

pub fn try_unwrap_in(self) -> Result<(), TryUnwrapError<Self>>

Attempts to unwrap this value to the ResourceClass::In variant. Returns a [TryUnwrapError] with the original value if this value is of any other type.

pub fn try_unwrap_any(self) -> Result<(), TryUnwrapError<Self>>

Attempts to unwrap this value to the ResourceClass::Any variant. Returns a [TryUnwrapError] with the original value if this value is of any other type.

pub fn try_unwrap_unknown(self) -> Result<u16, TryUnwrapError<Self>>

Attempts to unwrap this value to the ResourceClass::Unknown variant. Returns a [TryUnwrapError] with the original value if this value is of any other type.

impl ResourceClass

pub const fn as_str(&self) -> &'static str

Canonical lowercase slug for this resource class.

pub const fn to_u16(self) -> u16

Returns the wire-format u16 value.

pub const fn from_u16(v: u16) -> Self

Reconstructs from a wire-format 16-bit class field, stripping the top bit (cache-flush / unicast-response). Use Self::from_u16_raw if you need to preserve the bit.

pub const fn from_u16_raw(v: u16) -> Self

Reconstructs from a wire-format 16-bit class field without masking.

Trait Implementations

impl Clone for ResourceClass

fn clone(&self) -> ResourceClass

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ResourceClass

impl Debug for ResourceClass

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

Formats the value using the given formatter.

impl Display for ResourceClass

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

Formats the value using the given formatter.

impl Eq for ResourceClass

impl Hash for ResourceClass

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

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ResourceClass

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ResourceClass

fn eq(&self, other: &ResourceClass) -> 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 PartialOrd for ResourceClass

fn partial_cmp(&self, other: &ResourceClass) -> 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 StructuralPartialEq for ResourceClass