Trait rio_api::parser::TriplesParser

pub trait TriplesParser: Sized {
    type Error: Error;
    fn parse_step<E: From<Self::Error>>(
        &mut self, 
        on_triple: &mut impl FnMut(Triple) -> Result<(), E>
    ) -> Result<(), E>;
    fn is_end(&self) -> bool;

    fn parse_all<E: From<Self::Error>>(
        &mut self, 
        on_triple: &mut impl FnMut(Triple) -> Result<(), E>
    ) -> Result<(), E> { ... }
    fn into_iter<T, E: From<Self::Error>, F: FnMut(Triple) -> Result<T, E>>(
        self, 
        convert_triple: F
    ) -> TriplesParserIterator<T, E, F, Self> { ... }
}

A parser returning Triple.

Associated Types

type Error: Error

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Required methods

fn parse_step<E: From<Self::Error>>(
    &mut self,
    on_triple: &mut impl FnMut(Triple) -> Result<(), E>
) -> Result<(), E>

Parses a small chunk of the file and calls on_triple each time a new triple is read. (A "small chunk" could be a line for an N-Triples parser.)

This method should be called as long as is_end returns false.

It may fail on errors caused by the parser itself or by the callback function on_triple.

fn is_end(&self) -> bool

Returns true if the file has been completely consumed by the parser.

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Provided methods

fn parse_all<E: From<Self::Error>>(
    &mut self,
    on_triple: &mut impl FnMut(Triple) -> Result<(), E>
) -> Result<(), E>

Parses the complete file and calls on_triple each time a new triple is read.

May fail on errors caused by the parser itself or by the callback function on_triple.

fn into_iter<T, E: From<Self::Error>, F: FnMut(Triple) -> Result<T, E>>(
    self,
    convert_triple: F
) -> TriplesParserIterator<T, E, F, Self>

Converts the parser into a Result<T, E> iterator.

convert_triple is a function converting Rio Triple to T.

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Implementors

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