Trait 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.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors