Struct Parser 

pub struct Parser { /* private fields */ }

Implementations

impl Parser

pub fn parse<T: Parse>(self) -> Result<T>

Top-level parse function that parses the input to the proc macro.

pub fn peek_token(&mut self) -> Option<&TokenTree>

Returns the next token without consuming it, or None if no tokens remain.

pub fn peek_span(&mut self) -> Option<Span>

Returns the span of the next token, or None if no tokens remain.

pub fn last_span(&self) -> Option<Span>

Returns the span of the most recently consumed token.

pub fn eat_token(&mut self) -> Option<TokenTree>

Consumes the next token, returning it; returns None if no tokens remain.

pub fn eat_token_if( &mut self, test: impl Fn(&TokenTree) -> bool, ) -> Option<TokenTree>

Tests whether test returns true for the next token and – if so – consumes and returns it; returns None if no tokens remain.

pub fn eat_map<R>( &mut self, op: impl FnOnce(&TokenTree) -> Option<R>, ) -> Option<R>

pub fn eat_keyword(&mut self, kw: &str) -> Option<()>

pub fn eat_ident(&mut self) -> Option<String>

pub fn eat_punct(&mut self, ch: char) -> Option<Span>

Trait Implementations

impl From<TokenStream> for Parser

fn from(value: TokenStream) -> Self

Converts to this type from the input type.