Enum TopicPatternItem

pub enum TopicPatternItem {
    Str(Substr),
    Plus(Option<Substr>),
    Hash(Option<Substr>),
}

MQTT topic pattern segment: literal string or wildcard

Variants

Str(Substr)

Literal string segment

Plus(Option<Substr>)

Single-level wildcard + or named {param}

Hash(Option<Substr>)

Multi-level wildcard # or named {param:#}

Implementations

impl TopicPatternItem

pub fn as_str(&self) -> &str

Returns string representation of the pattern item.

pub fn as_wildcard(&self) -> Cow<'_, str>

Returns pattern representation with named parameters in braces.

pub fn param_name(&self) -> Option<Substr>

Returns parameter name for named wildcards.

pub fn is_wildcard(&self) -> bool

Returns true if this item is a wildcard (+ or #).

Trait Implementations

impl Clone for TopicPatternItem

fn clone(&self) -> TopicPatternItem

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TopicPatternItem

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

Formats the value using the given formatter.

impl Display for TopicPatternItem

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

Formats the value using the given formatter.

impl Hash for TopicPatternItem

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

where __H: Hasher,

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 PartialEq for TopicPatternItem

fn eq(&self, other: &TopicPatternItem) -> 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 TryFrom<Substr> for TopicPatternItem

type Error = TopicPatternError

The type returned in the event of a conversion error.

fn try_from( item: Substr, ) -> Result<TopicPatternItem, <TopicPatternItem as TryFrom<Substr>>::Error>

Performs the conversion.

impl Eq for TopicPatternItem

impl StructuralPartialEq for TopicPatternItem