Trait rio_api::parser::QuadsParser

pub trait QuadsParser: Sized {
    type Error: Error;

    // Required methods
    fn parse_step<E: From<Self::Error>>(
        &mut self,
        on_quad: &mut impl FnMut(Quad<'_>) -> Result<(), E>
    ) -> Result<(), E>;
    fn is_end(&self) -> bool;

    // Provided methods
    fn parse_all<E: From<Self::Error>>(
        &mut self,
        on_quad: &mut impl FnMut(Quad<'_>) -> Result<(), E>
    ) -> Result<(), E> { ... }
    fn into_iter<T, E: From<Self::Error>, F: FnMut(Quad<'_>) -> Result<T, E>>(
        self,
        convert_quad: F
    ) -> QuadsParserIterator<T, E, F, Self>  { ... }
}

A parser returning Quad.

Required Associated Types

type Error: Error

Required Methods

fn parse_step<E: From<Self::Error>>( &mut self, on_quad: &mut impl FnMut(Quad<'_>) -> Result<(), E> ) -> Result<(), E>

Parses a small chunk of the file and calls on_quad each time a new quad is read. (A “small chunk” could be a line for an N-Quads parser.)

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

May fails on errors caused by the parser itself or by the callback function on_quad.

fn is_end(&self) -> bool

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

Provided Methods

fn parse_all<E: From<Self::Error>>( &mut self, on_quad: &mut impl FnMut(Quad<'_>) -> Result<(), E> ) -> Result<(), E>

Parses the complete file and calls on_quad each time a new quad is read.

May fails on errors caused by the parser itself or by the callback function on_quad.

fn into_iter<T, E: From<Self::Error>, F: FnMut(Quad<'_>) -> Result<T, E>>( self, convert_quad: F ) -> QuadsParserIterator<T, E, F, Self>

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

convert_triple is a function converting Rio Triple to T.

Implementors