Trait TokenTree

pub trait TokenTree:
    ProcMacro<TokenTree = Self>
    + Display
    + From<Self::Group>
    + From<Self::Ident>
    + From<Self::Punct>
    + From<Self::Literal> {
    // Required methods
    fn span(&self) -> Self::Span;
    fn set_span(&mut self, span: Self::Span);
}

TokenTree API trait. See proc_macro::TokenTree.

This trait is implemented for TokenTree in proc_macro and proc_macro2 if the corresponding feature is enabled.

See also TokenTreeExt.

Required Methods

fn span(&self) -> Self::Span

Get the span of this TokenTree.

fn set_span(&mut self, span: Self::Span)

Set the span of this TokenTree. If the TokenTree is a Group, this will use Group::set_span.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl TokenTree for TokenTree

Available on crate feature proc-macro only.

fn span(&self) -> Self::Span

fn set_span(&mut self, span: Self::Span)

impl TokenTree for TokenTree

Available on crate feature proc-macro2 only.

fn span(&self) -> Self::Span

fn set_span(&mut self, span: Self::Span)

Implementors