[][src]Trait quote::ToTokens

pub trait ToTokens {
    fn to_tokens(&self, tokens: &mut TokenStream);

    fn into_token_stream(self) -> TokenStream
        Self: Sized
, { ... } }

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 implementation for a struct representing Rust paths like std::cmp::PartialEq:

This code runs with edition 2018
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));
Loading content...

Provided methods

fn into_token_stream(self) -> TokenStream where
    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.

Loading content...

Implementations on Foreign Types

impl<'a, T: ?Sized + ToTokens> ToTokens for &'a T[src]

impl<'a, T: ?Sized + ToTokens> ToTokens for &'a mut T[src]

impl<'a, T: ?Sized + ToOwned + ToTokens> ToTokens for Cow<'a, T>[src]

impl<T: ?Sized + ToTokens> ToTokens for Box<T>[src]

impl<T: ?Sized + ToTokens> ToTokens for Rc<T>[src]

impl<T: ToTokens> ToTokens for Option<T>[src]

impl ToTokens for str[src]

impl ToTokens for String[src]

impl ToTokens for i8[src]

impl ToTokens for i16[src]

impl ToTokens for i32[src]

impl ToTokens for i64[src]

impl ToTokens for isize[src]

impl ToTokens for u8[src]

impl ToTokens for u16[src]

impl ToTokens for u32[src]

impl ToTokens for u64[src]

impl ToTokens for usize[src]

impl ToTokens for f32[src]

impl ToTokens for f64[src]

impl ToTokens for char[src]

impl ToTokens for bool[src]

impl ToTokens for Group[src]

impl ToTokens for Ident[src]

impl ToTokens for Punct[src]

impl ToTokens for Literal[src]

impl ToTokens for TokenTree[src]

impl ToTokens for TokenStream[src]

Loading content...


Loading content...