Enum syn::parse::IResult

pub enum IResult<I, O> {
    Done(I, O),
    Error,
}

The result of a parser.

Variants

Done(I, O)

Parsing succeeded. The first field contains the rest of the unparsed data and the second field contains the parse result.

Error

Parsing failed.

Methods

impl<'a, O> IResult<&'a str, O>

pub fn expect(self, name: &str) -> O

Unwraps the result, asserting the the parse is complete. Panics with a message based on the given string if the parse failed or is incomplete.

extern crate syn;
#[macro_use] extern crate synom;

use syn::Ty;
use syn::parse::ty;

// One or more Rust types separated by commas.
named!(comma_separated_types -> Vec<Ty>,
    separated_nonempty_list!(punct!(","), ty)
);

fn main() {
    let input = "&str, Map<K, V>, String";

    let parsed = comma_separated_types(input).expect("comma-separated types");

    assert_eq!(parsed.len(), 3);
    println!("{:?}", parsed);
}

Trait Implementations

impl<I, O> Eq for IResult<I, O> where     I: Eq,     O: Eq,

impl<I, O> PartialEq<IResult<I, O>> for IResult<I, O> where     I: PartialEq<I>,     O: PartialEq<O>,

fn eq(&self, other: &IResult<I, O>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &IResult<I, O>) -> bool

This method tests for !=.

impl<I, O> Clone for IResult<I, O> where     I: Clone,     O: Clone,

fn clone(&self) -> IResult<I, O>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<I, O> Debug for IResult<I, O> where     I: Debug,     O: Debug,

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

Formats the value using the given formatter.