Enum TokenTree 

pub enum TokenTree {
    Group(Group),
    Literal(Literal),
    Punct(Punct),
    Ident(IdentToken),
    Trivia(Trivia),
    // some variants omitted
}

Variants

Group(Group)

Literal(Literal)

Punct(Punct)

Ident(IdentToken)

Trivia(Trivia)

Implementations

impl TokenTree

pub fn spelling(&self) -> Option<&str>

Examples found in repository

examples/parse_emit_walkthrough.rs (line 23)

    fn parse(input: &mut ParseStream) -> Result<Self, TokenParseError> {
        let Some(token) = input.next_token() else {
            return Err(TokenParseError::UnexpectedEnd {
                expected: "identifier",
                span: Span::detached(),
            });
        };

        let span = token.span();
        match token {
            TokenTree::Ident(identifier) => Ok(Self(identifier)),
            token => Err(TokenParseError::UnexpectedToken {
                expected: "identifier",
                found: token.spelling().unwrap_or("group or trivia").to_owned(),
                span,
            }),
        }
    }

Trait Implementations

impl Clone for TokenTree

fn clone(&self) -> TokenTree

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TokenTree

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

Formats the value using the given formatter.

impl Eq for TokenTree

impl Extend<TokenTree> for TokenStream

fn extend<T: IntoIterator<Item = TokenTree>>(&mut self, iter: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl FromIterator<TokenTree> for TokenStream

fn from_iter<T: IntoIterator<Item = TokenTree>>(iter: T) -> Self

Creates a value from an iterator.

impl Parse for TokenTree

fn parse(input: &mut ParseStream) -> Result<Self, TokenParseError>

impl PartialEq for TokenTree

fn eq(&self, other: &TokenTree) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Spanned for TokenTree

fn span(&self) -> Span

impl StructuralPartialEq for TokenTree

impl ToTokens for TokenTree

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

fn to_token_stream(&self) -> TokenStream

fn to_m2(&self) -> String

fn to_code(&self) -> String