[−][src]Trait quote::ToTokens
Types that can be interpolated inside a quote! invocation.
Required methods
fn to_tokens(&self, tokens: &mut TokenStream)
Write self to the given TokenStream.
The token append methods provided by the TokenStreamExt extension
trait may be useful for implementing ToTokens.
Example
Example implementation for a struct representing Rust paths like
std::cmp::PartialEq:
use proc_macro2::{TokenTree, Spacing, Span, Punct, TokenStream}; use quote::{TokenStreamExt, ToTokens}; pub struct Path { pub global: bool, pub segments: Vec<PathSegment>, } impl ToTokens for Path { fn to_tokens(&self, tokens: &mut TokenStream) { for (i, segment) in self.segments.iter().enumerate() { if i > 0 || self.global { // Double colon `::` tokens.append(Punct::new(':', Spacing::Joint)); tokens.append(Punct::new(':', Spacing::Alone)); } segment.to_tokens(tokens); } } }
Provided methods
fn to_token_stream(&self) -> TokenStream
Convert self directly into a TokenStream object.
This method is implicitly implemented using to_tokens, and acts as a
convenience method for consumers of the ToTokens trait.
fn into_token_stream(self) -> TokenStream where
Self: Sized,
Self: Sized,
Convert self directly into a TokenStream object.
This method is implicitly implemented using to_tokens, and acts as a
convenience method for consumers of the ToTokens trait.