Struct NonEmptyTokenStream 

pub struct NonEmptyTokenStream(pub TokenStream);

Since parsing a TokenStream succeeds even when no tokens are left, this type is used to parse a TokenStream that is not empty.

Tuple Fields

0: TokenStream

Trait Implementations

impl Parser for NonEmptyTokenStream

fn parser( tokens: &mut ShadowCountedIter<'_, <TokenStream as IntoIterator>::IntoIter>, ) -> Result<NonEmptyTokenStream, 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 ToTokens for NonEmptyTokenStream

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

Write &self to the given TokenStream.

fn to_token_iter( &self, ) -> ShadowCountedIter<'_, <TokenStream as IntoIterator>::IntoIter>

Convert &self into a TokenIter object.

fn into_token_iter<'a>( self, ) -> ShadowCountedIter<'a, <TokenStream as IntoIterator>::IntoIter>

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.

impl TryFrom<TokenStream> for NonEmptyTokenStream

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: TokenStream) -> Result<NonEmptyTokenStream, Error>

Performs the conversion.