Struct Except 

pub struct Except<T>(/* private fields */);

Succeeds when the next token does not match T. Will not consume any tokens. Usually this has to be followed with a conjunctive match such as Cons<Except<T>, U> or followed by another entry in a struct or tuple.

Example

let mut token_iter = "ident".to_token_iter();

let _ = Except::<Punct>::parser(&mut token_iter).unwrap();

Trait Implementations

impl<T> Clone for Except<T>

where T: Clone,

fn clone(&self) -> Except<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Debug for Except<T>

where T: Debug,

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

Formats the value using the given formatter.

impl<T> Parser for Except<T>

where T: Parse,

fn parser(tokens: &mut TokenIter) -> Result<Except<T>, Error>

The actual parsing function that must be implemented. This mutates the tokens iterator directly. It should not be called from user code except for implementing parsers itself and then only when the rules below are followed.

impl<T> ToTokens for Except<T>

fn to_tokens(&self, _tokens: &mut TokenStream)

Write &self to the given TokenStream.

fn to_token_iter(&self) -> TokenIter

Convert &self into a TokenIter object.

fn into_token_iter(self) -> TokenIter

where Self: Sized,

Convert self into a TokenIter object.

fn to_token_stream(&self) -> TokenStream

Convert &self into a TokenStream object.

fn into_token_stream(self) -> TokenStream

where Self: Sized,

Convert self into a TokenStream object.

fn tokens_to_string(&self) -> String

Convert &self into a String object. This is mostly used in the test suite to compare the outputs. When the input is a &str then this parses it and returns a normalized String.