Trait Alt 

pub trait Alt<I, O, E> {
    // Required method
    fn choice(&mut self, input: &mut I) -> Result<O, E>;
}

Helper trait for the alt() combinator.

This trait is implemented for tuples of up to 21 elements

Required Methods

fn choice(&mut self, input: &mut I) -> Result<O, E>

Tests each parser in the tuple and returns the result of the first one that succeeds

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<I: Stream, O, E: ParserError<I>, A: Parser<I, O, E>> Alt<I, O, E> for (A,)

fn choice(&mut self, input: &mut I) -> Result<O, E>

impl<I: Stream, O, E: ParserError<I>, P: Parser<I, O, E>> Alt<I, O, E> for &mut [P]

fn choice(&mut self, input: &mut I) -> Result<O, E>

impl<I: Stream, Output, Error: ParserError<I>, Alt2: Parser<I, Output, Error>, Alt3: Parser<I, Output, Error>, Alt4: Parser<I, Output, Error>, Alt5: Parser<I, Output, Error>, Alt6: Parser<I, Output, Error>, Alt7: Parser<I, Output, Error>, Alt8: Parser<I, Output, Error>, Alt9: Parser<I, Output, Error>, Alt10: Parser<I, Output, Error>> Alt<I, Output, Error> for (Alt2, Alt3, Alt4, Alt5, Alt6, Alt7, Alt8, Alt9, Alt10)

fn choice(&mut self, input: &mut I) -> Result<Output, Error>

impl<I: Stream, Output, Error: ParserError<I>, Alt2: Parser<I, Output, Error>, Alt3: Parser<I, Output, Error>, Alt4: Parser<I, Output, Error>, Alt5: Parser<I, Output, Error>, Alt6: Parser<I, Output, Error>, Alt7: Parser<I, Output, Error>, Alt8: Parser<I, Output, Error>, Alt9: Parser<I, Output, Error>> Alt<I, Output, Error> for (Alt2, Alt3, Alt4, Alt5, Alt6, Alt7, Alt8, Alt9)

fn choice(&mut self, input: &mut I) -> Result<Output, Error>

impl<I: Stream, Output, Error: ParserError<I>, Alt2: Parser<I, Output, Error>, Alt3: Parser<I, Output, Error>, Alt4: Parser<I, Output, Error>, Alt5: Parser<I, Output, Error>, Alt6: Parser<I, Output, Error>, Alt7: Parser<I, Output, Error>, Alt8: Parser<I, Output, Error>> Alt<I, Output, Error> for (Alt2, Alt3, Alt4, Alt5, Alt6, Alt7, Alt8)

fn choice(&mut self, input: &mut I) -> Result<Output, Error>

impl<I: Stream, Output, Error: ParserError<I>, Alt2: Parser<I, Output, Error>, Alt3: Parser<I, Output, Error>, Alt4: Parser<I, Output, Error>, Alt5: Parser<I, Output, Error>, Alt6: Parser<I, Output, Error>, Alt7: Parser<I, Output, Error>> Alt<I, Output, Error> for (Alt2, Alt3, Alt4, Alt5, Alt6, Alt7)

fn choice(&mut self, input: &mut I) -> Result<Output, Error>

impl<I: Stream, Output, Error: ParserError<I>, Alt2: Parser<I, Output, Error>, Alt3: Parser<I, Output, Error>, Alt4: Parser<I, Output, Error>, Alt5: Parser<I, Output, Error>, Alt6: Parser<I, Output, Error>> Alt<I, Output, Error> for (Alt2, Alt3, Alt4, Alt5, Alt6)

fn choice(&mut self, input: &mut I) -> Result<Output, Error>

impl<I: Stream, Output, Error: ParserError<I>, Alt2: Parser<I, Output, Error>, Alt3: Parser<I, Output, Error>, Alt4: Parser<I, Output, Error>, Alt5: Parser<I, Output, Error>> Alt<I, Output, Error> for (Alt2, Alt3, Alt4, Alt5)

fn choice(&mut self, input: &mut I) -> Result<Output, Error>

impl<I: Stream, Output, Error: ParserError<I>, Alt2: Parser<I, Output, Error>, Alt3: Parser<I, Output, Error>, Alt4: Parser<I, Output, Error>> Alt<I, Output, Error> for (Alt2, Alt3, Alt4)

fn choice(&mut self, input: &mut I) -> Result<Output, Error>

impl<I: Stream, Output, Error: ParserError<I>, Alt2: Parser<I, Output, Error>, Alt3: Parser<I, Output, Error>> Alt<I, Output, Error> for (Alt2, Alt3)

fn choice(&mut self, input: &mut I) -> Result<Output, Error>

impl<const N: usize, I: Stream, O, E: ParserError<I>, P: Parser<I, O, E>> Alt<I, O, E> for [P; N]

fn choice(&mut self, input: &mut I) -> Result<O, E>

Implementors