Enum Literal

pub enum Literal<'a> {
    Simple {
        value: &'a str,
    },
    LanguageTaggedString {
        value: &'a str,
        language: &'a str,
    },
    Typed {
        value: &'a str,
        datatype: NamedNode<'a>,
    },
}

An RDF literal.

The default string formatter is returning an N-Triples, Turtle and SPARQL compatible representation.

The language tags should be lowercased as suggested by the RDF specification.

use rio_api::model::NamedNode;
use rio_api::model::Literal;

assert_eq!(
    "\"foo\\nbar\"",
    Literal::Simple { value: "foo\nbar" }.to_string()
);

assert_eq!(
    "\"1999-01-01\"^^<http://www.w3.org/2001/XMLSchema#date>",
    Literal::Typed { value: "1999-01-01", datatype: NamedNode {iri: "http://www.w3.org/2001/XMLSchema#date" }}.to_string()
);

assert_eq!(
    "\"foo\"@en",
    Literal::LanguageTaggedString { value: "foo", language: "en" }.to_string()
);

Variants

Simple

A simple literal without datatype or language form.

Fields

value: &'a str

The lexical form.

LanguageTaggedString

A language-tagged string

Fields

value: &'a str

The lexical form.

language: &'a str

The language tag.

Typed

A literal with an explicit datatype

Fields

value: &'a str

The lexical form.

datatype: NamedNode<'a>

The datatype IRI.

Trait Implementations

impl<'a> Clone for Literal<'a>

fn clone(&self) -> Literal<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Literal<'a>

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

Formats the value using the given formatter.

impl<'a> Display for Literal<'a>

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

Formats the value using the given formatter.

impl<'a> From<Literal<'a>> for GeneralizedTerm<'a>

fn from(other: Literal<'a>) -> GeneralizedTerm<'a>

Converts to this type from the input type.

impl<'a> From<Literal<'a>> for Term<'a>

fn from(literal: Literal<'a>) -> Self

Converts to this type from the input type.

impl<'a> Hash for Literal<'a>

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<'a> PartialEq for Literal<'a>

fn eq(&self, other: &Literal<'a>) -> 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<'a> Copy for Literal<'a>

impl<'a> Eq for Literal<'a>

impl<'a> StructuralPartialEq for Literal<'a>