Struct PrefixCache 

pub struct PrefixCache { /* private fields */ }

Bidirectional namespace prefix ↔ IRI lookup cache.

Stores the registered prefix→IRI mappings and provides fast lookups in both directions (prefix→IRI and IRI→prefix).

Implementations

impl PrefixCache

pub fn new() -> Self

pub fn register(&mut self, prefix: &str, iri: &str)

Register a new prefix → IRI mapping.

Replaces any existing mapping for the same prefix.

pub fn resolve_prefix(&self, prefix: &str) -> Option<&str>

Look up the IRI for a given prefix. Returns None if not registered.

pub fn resolve_iri(&self, iri: &str) -> Option<&str>

Look up the prefix for a given namespace IRI. Returns None if not registered.

pub fn expand(&self, prefixed: &str) -> Option<String>

Expand a prefixed name (e.g. "rdf:type") to a full IRI.

Returns None if the prefix is not registered or the input has no colon.

pub fn compact(&self, iri: &str) -> Option<String>

Compact a full IRI to a prefixed name (e.g. "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" → "rdf:type").

Tries all registered namespaces; picks the longest matching namespace.

pub fn remove(&mut self, prefix: &str) -> bool

Remove a prefix mapping.

pub fn len(&self) -> usize

Number of registered prefixes.

pub fn is_empty(&self) -> bool

pub fn entries(&self) -> Vec<(&str, &str)>

All registered (prefix, iri) pairs.

pub fn with_standard_prefixes(self) -> Self

Register the standard RDF/RDFS/OWL/XSD prefixes.

Trait Implementations

impl Clone for PrefixCache

fn clone(&self) -> PrefixCache

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PrefixCache

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

Formats the value using the given formatter.

impl Default for PrefixCache

fn default() -> PrefixCache

Returns the “default value” for a type.