Struct Selector 

pub struct Selector { /* private fields */ }

Label predicate. Construct via Selector::new and the chainable builder methods, or parse from text with Selector::parse. Evaluate against any Labels with Selector::matches.

Implementations

impl Selector

pub fn new() -> Self

Empty selector — matches every label set.

pub fn parse(s: &str) -> Result<Self, SelectorParseError>

Parse the text form: type=phase,name=rampup,profile~=label_*,optimize_for=RECALL. Whitespace around commas and operators is tolerated.

pub fn eq(self, key: &str, value: &str) -> Self

Push key = value — exact match clause.

pub fn ne(self, key: &str, value: &str) -> Self

Push key != value — non-match (or absent) clause.

pub fn glob(self, key: &str, pattern: &str) -> Self

Push key ~= pattern — glob-match clause.

pub fn present(self, key: &str) -> Self

Push key? — presence clause.

pub fn absent(self, key: &str) -> Self

Push key!? — absence clause.

pub fn matches(&self, labels: &Labels) -> bool

True if every clause matches. An empty selector matches every label set.

pub fn len(&self) -> usize

Number of clauses in the selector.

pub fn is_empty(&self) -> bool

True if the selector carries no clauses.

Trait Implementations

impl Clone for Selector

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Selector

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

Formats the value using the given formatter.

impl Default for Selector

fn default() -> Self

Returns the “default value” for a type.

impl Display for Selector

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

Round-trippable text form. Whitespace omitted so the output is canonical: parse(selector.to_string()) yields a selector equal to the original.

impl Eq for Selector

impl PartialEq for Selector

fn eq(&self, other: &Self) -> bool

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Selector